CN115947248A - winch - Google Patents

Abstract

The application relates to a winch, which belongs to the technical field of winches and comprises a base, a supporting frame and a winding drum, wherein the supporting frame is arranged on the base, the winding drum is sleeved on the supporting frame, and a first gear is arranged on the winding drum; the power part is connected with the transmission part to drive the transmission part to rotate, the power part comprises a power output shaft, the transmission part is sleeved on the power output shaft and can move along the axial direction of the power output shaft, a second gear is arranged on the transmission part, the transmission part is provided with a first position and a second position, the second gear is meshed with the first gear when the transmission part is located at the first position, and the second gear is spaced from the first gear when the transmission part is located at the second position. According to the winch, when the winding drum driving part of the winch cannot output power, the transmission part is moved to enable the second gear to be meshed with the first gear, the power part drives the second gear to rotate so as to drive the first gear to rotate and drive the winding drum to rotate, and the winch is reliable in power transmission, compact in structure and high in reliability.

Description

winch

technical field

The present application relates to the technical field of winches, in particular to a winch.

Background technique

The drawworks is one of the important units of the drilling and workover rig. It is mainly used for raising and lowering the derrick, tripping the drilling tool and running the casing, controlling the drilling pressure during the drilling process of the drill bit, handling accidents, extracting the core barrel, and testing the oil, etc. Operation. It is mainly composed of four parts: power machine, gear reducer, winch main body and auxiliary drive device.

During drilling and workover operations, the power transmission components driving the drawworks fail to work, and the power cannot be input to the drawworks, causing the lifting system to be paralyzed and seriously affecting the operating efficiency. In the winch emergency device in the prior art, under normal circumstances, the power source transfers the power from the corner box to the chain box to the winch. When the power source fails, the power of the winch motor is input into the corner box to maintain the hoisting and lowering of the winch. Disadvantages: The power transmission must be transmitted through the corner box and the chain box to complete the work. If the corner box and the chain box fail, the winch has no power input and does not work, causing the hook to hover, and serious accidents have occurred. In the CN268134Y patent, an emergency solution for a winch is proposed. Due to the complexity of the internal gear shifting structure of the winch, the solution is prone to failure problems, and the components occupy a lot of equipment space, so it has not been widely used.

Therefore, need badly a kind of simple in structure, the winch emergency power unit that is easy to popularize.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a winch, which has reliable power transmission, compact structure, simple operation, simple structure and high reliability.

The winch according to the present invention includes: a base, a support frame, and a reel, the support frame is set on the base, the reel is sleeved on the support frame, and the reel is provided with a first gear; the transmission part and the power part, the power part and the transmission The transmission part is connected to drive the transmission part to rotate. The power part includes a power output shaft. The transmission part is sleeved on the power output shaft. The transmission part can move along the axial direction of the power output shaft. In the first position and the second position, when the transmission member is in the first position, the second gear meshes with the first gear, and when the transmission member is in the second position, the second gear is spaced from the first gear.

According to the winch of the present invention, by providing a movable transmission member, when the drum driving part of the winch is in normal operation, the transmission member is in the second position, the second gear is spaced from the first gear, and the drum driving part drives the drum to rotate. At the same time, the first gear is driven to rotate to prevent the second gear from interfering with the first gear. When the reel driving part of the winch cannot output, by moving the transmission part, it moves from the second position to the first position, so that the second gear can move to the first position. The second gear meshes with the first gear, and the power unit drives the second gear to rotate, thereby driving the first gear to rotate and then driving the reel to rotate, so as to realize the retraction and release of the reel to the rope. The power transmission is reliable, the structure is compact, and the operation is simple. Simple, high reliability.

According to the winch of the present invention, it comprises: an adjusting rod, which is rotatably arranged on the base, a connecting part is fixedly arranged on the adjusting rod, and a first through hole is arranged on the connecting part, and the first through hole is configured as a waist-shaped hole, The first through hole extends along the second direction; the engaging part is rotatably connected to the transmission part, and the first limiting pin is fixed on the engaging part, and the first limiting pin passes through the first In the through hole, wherein the power output shaft extends along the first direction, and the second direction is perpendicular to the first direction.

Optionally, the extending direction of the first through hole is perpendicular to the axial direction of the second gear.

Optionally, the transmission member is provided with a first limiting portion, the first limiting portion and the second gear are arranged side by side along the axial direction of the second gear at intervals, the engaging member is provided with a second limiting portion, the first The limiting part is rotatably connected with the second limiting part.

Optionally, the winch also includes: a limiting plate, which is fixed on the base, and the limiting plate is provided with two second through holes, the two second through holes are arranged at intervals along the second direction, and the adjusting rod A detachable second limiting pin shaft is provided, and the second limiting pin shaft passes through any second through hole.

Optionally, the adjusting rod is provided with a mounting plate, the mounting plate includes a long plate and a short plate connected to each other in an L shape, the short plate is opposite to the adjusting rod, and an assembly hole is arranged on the short plate, and the second limit pin shaft passes through it at the same time. Located in the second through hole and the assembly hole, the second limit pin shaft includes a handle, and the handle is located on a side of the limit plate away from the second gear.

Optionally, the winch also includes: a limit bracket, the limit bracket is arranged on the base, the limit bracket is provided with a first clamp and a second clamp relative to each other, and the limit bracket and the first clamp jointly define a first clamp. An installation hole, the limit bracket and the second hoop jointly define the second installation hole, and the adjusting rod is simultaneously passed through the first installation hole and the second installation hole.

According to the winch of the present invention, one end of the power output shaft is provided with a limit baffle, and the limit baffle is located on the side of the transmission part away from the power part.

According to the winch of the present invention, the transmission part is provided with a channel penetrating along its axial direction, the power output shaft is penetrated in the channel, one of the inner wall of the channel and the power output shaft is provided with a guide groove, and the other is provided with a guide groove. The guide part is embedded in the guide groove, and the guide groove extends along the axial direction of the power output shaft.

According to the winch of the present invention, the pitch circle diameter of the second gear is smaller than the pitch circle diameter of the first gear.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings without paying creative labor.

1 is a perspective view of a winch according to an embodiment of the present invention;

Fig. 2 is the front view of the transmission part of the winch according to the embodiment of the present invention in the second position;

Fig. 3 is the enlarged view of place A in Fig. 2;

Fig. 4 is the front view of the transmission part of the winch according to the embodiment of the present invention in the first position;

Fig. 5 is the enlarged view of place B in Fig. 4;

Fig. 6 is a perspective view of a transmission member of a winch in a second position according to an embodiment of the present invention;

Fig. 7 is a perspective view of the transmission member of the winch in a first position according to an embodiment of the present invention;

8 is an exploded view of a partial structure of a winch according to an embodiment of the present invention;

Fig. 9 is another perspective view of a winch according to an embodiment of the present invention;

10 is an exploded view of a partial structure of a winch according to an embodiment of the present invention;

Fig. 11 is an assembly view of a partial structure of a winch according to an embodiment of the present invention.

Reference signs:

winch 1,

Base 10, support frame 20, reel 30, first gear 31, transmission member 40, second gear 41, first limiter 42, channel 43, guide groove 432, power unit 50, power output shaft 51, limiter Baffle plate 52, adjusting rod 60, connecting part 61, first through hole 612, second limit pin 62, handle 622, mounting plate 63, limit groove 64, engaging member 70, first limit pin 71 , the second limiting portion 72 , the limiting plate 80 , the second through hole 81 , the limiting bracket 90 , the first clip 91 , and the second clip 92 .

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

As shown in FIGS. 1 and 8 , the winch 1 according to the embodiment of the present invention includes: a base 10 , a support frame 20 , a reel 30 , a transmission member 40 and a power part 50 .

Specifically, as shown in FIGS. 2-5 , the support frame 20 is set on the base 10, the reel 30 is sleeved on the support frame 20, and the reel 30 is provided with a first gear 31; the power part 50 and the transmission member 40 Connected to drive the transmission part 40 to rotate, the power part 50 includes a power output shaft 51, the transmission part 40 is sleeved on the power output shaft 51, the transmission part 40 can move along the axial direction of the power output shaft 51, and the transmission part 40 is provided with The second gear 41, the transmission member 40 has a first position and a second position, as shown in Figure 4 and Figure 5, when the transmission member 40 is in the first position, the second gear 41 meshes with the first gear 31, as shown in Figure 2 As shown in FIG. 3 , when the transmission member 40 is in the second position, the second gear 41 is spaced apart from the first gear 31 .

More specifically, the first gear 31 is fixedly connected to the reel 30, that is to say, if the reel 30 is driven to rotate, the first gear 31 rotates synchronously, and if the first gear 31 is driven to rotate, the reel 30 is synchronously turn. The reel 30 and the first gear 31 can be integrally formed, or can be detachably fixedly connected, and the power output shaft 51 can be the direct output shaft of the power part 50, or the output shaft after being decelerated by a plurality of reduction gears For example, the power part 50 is a motor, and the power output shaft 51 can be the output shaft of the motor, or it can be the output shaft required by the motor output shaft to transmit the motion to the transmission member 40 after being decelerated by a plurality of reduction gears. Of course, the power part 50 is not limited to a motor, but may also be a hydraulic motor or an air motor.

The winch 1 usually has a reel 30 driving part and a twisted rope, one end of the twisted rope is fixedly wound on the drum 30, the other end of the twisted rope is used to lift or lower the article, and the reel 30 driving part is used to drive the reel under normal conditions. The cylinder 30 rotates to realize the retraction and release of the twisted rope, and then realize the lifting or lowering of the articles.

When the driving part of the reel 30 is in normal operation, as shown in Figure 2 and Figure 3, the transmission member 40 is in the second position, the second gear 41 is spaced from the first gear 31, and the second gear 41 avoids the first gear 31 to prevent the second gear The second gear 41 interferes with the first gear 31. When the drum 30 driving part of the winch 1 fails, the transmission member 40 is moved from the second position to the first position manually, or the transmission member 40 is moved from the second position to the second position by mechanical driving. The position moves to the first position, as shown in Figure 4 and Figure 5, when the transmission member 40 is in the first position, the second gear 41 meshes with the first gear 31, and the power output shaft 51 is driven to rotate through the power part 50, and then drives the second gear 41 to rotate. The second gear 41 rotates, thereby driving the first gear 31 and the reel 30 to rotate, so as to realize retracting and unwinding of the twisted rope, thereby lifting or lowering the article.

It should be noted that the "first position" and "second position" are defined positions only to illustrate the relative positional relationship between the first gear 31 and the second gear 41, rather than specifically refer to a certain position, as long as the The corresponding relative positional relationship is sufficient.

It should be added that the second gear 41 includes a spur gear, a bevel gear, a rack, a worm gear, a worm, and the like.

According to the winch 1 of the embodiment of the present invention, by setting the movable transmission member 40, when the drive part of the reel 30 of the winch 1 is in normal operation, the transmission member 40 is in the second position, and the second gear 41 is spaced from the first gear 31, The driving part of the reel 30 drives the reel 30 to rotate while driving the first gear 31 to rotate, preventing the second gear 41 from interfering with the first gear 31. , so that it moves from the second position to the first position, so that the second gear 41 meshes with the first gear 31, and the second gear 41 is driven to rotate through the power part 50, thereby driving the first gear 31 to rotate and thereby driving the reel 30 to rotate , so as to realize the retraction and release of the rope by the reel 30, reliable power transmission, compact structure, simple operation, simple structure and high reliability.

As shown in FIGS. 6-8 , the winch 1 according to the embodiment of the present invention further includes an adjusting rod 60 and an engaging member 70 .

In detail, the adjusting rod 60 is rotatably arranged on the base 10, the connecting part 61 is fixed on the adjusting rod 60, the connecting part 61 is provided with a first through hole 612, the first through hole 612 is configured as a waist-shaped hole, and the card The coupling part 70 is rotatably connected to the transmission part 40 , and the engaging part 70 is fixed with a first limiting pin 71 , and the first limiting pin 71 passes through the first through hole 612 .

For convenience of description, the axial direction of the power output shaft 51 is defined as the first direction, and the direction perpendicular to the axial direction of the power output shaft 51 is defined as the second direction, wherein Fig. 2 shows the first direction and the second direction .

As shown in Figure 9 and Figure 10, that is to say, the connecting part 61 is fixed on the adjusting rod 60, and when the adjusting rod 60 rotates, it can drive the connecting part 61 to rotate synchronously, and the first through hole 612 will follow the connecting part. Rotate to change the position, and the first limit pin shaft 71 is passed through the first through hole 612, so the first limit pin shaft 71 will change position accordingly, and the moving track of the connecting part 61 is a rotating track, and its rotation The trajectory has a component in the first direction and a component in the second direction, so that the first limit pin shaft 71 obtains a component in the first direction and a component in the second direction, and the first through hole 612 is configured as a waist hole , the first through hole 612 extends along the second direction, so that the first limit pin shaft 71 can move along the second direction in the first through hole 612, which will make the engaging member 70 and the transmission member 40 rotate relatively, And this is not the target motion that the solution of the present application needs to obtain. It is to prevent the first limit pin shaft 71 from interfering with the connecting portion 61 and hinder the rotation of the adjustment rod 60; and the first limit pin shaft 71 obtains the first The component in one direction can drive the engaging member 70 to produce a component moving in the first direction, so that the engaging member 70 drives the transmission member 40 to move in the first direction, and by rotating the adjusting rod 60 in different directions, the transmission member 40 can be moved Move from the first position to the second position, or from the second position to the first position.

It should be noted that the rotation of the adjustment rod 60 can be driven mechanically, such as by adding a clutch, which can be driven by pneumatic, hydraulic or electric means, or manually adjusted.

In some embodiments, the extending direction of the first through hole 612 is perpendicular to the axial direction of the second gear 41 . That is to say, the axial direction of the second gear 41 is in the same direction as the axial direction of the power output shaft 51 , which can simplify the structural arrangement.

In some embodiments, the transmission member 40 is provided with a first limiting portion 42 , the first limiting portion 42 and the second gear 41 are arranged side by side along the axial direction of the second gear 41 at intervals, and the engaging member 70 is provided with The second limiting portion 72 , the first limiting portion 42 and the second limiting portion 72 are rotatably connected.

As shown in FIG. 8 , the first limiting portion 42 is configured as a wheel groove, and the wheel groove and the second gear 41 are arranged side by side along the axial direction of the second gear 41 at intervals, and the engaging member 70 and the second limiting portion 72 are configured together. into a clamp, which is rotatably clamped in the wheel groove. In order to reduce the frictional resistance between the clamp and the transmission member 40 when the clamp rotates, lubricating oil, grease, etc. can be injected into the wheel groove, or, in the clamp A bearing is arranged between the wheel groove and the wheel groove.

In some other embodiments, the first limiting portion 42 is configured as a wheel groove, the second limiting portion 72 is configured as a protrusion, the protrusion extends along the circumferential direction of the engaging member 70, and the protrusion is locked in the wheel groove.

In some other embodiments, the first limiting portion 42 is configured as a protrusion, the second limiting portion 72 is configured as a groove, the protrusion extends along the circumferential direction of the transmission member 40, and the groove extends along the engaging The circumferential direction of the member 70 extends.

In some embodiments, the winch 1 further includes a limiting plate 80 . The limiting plate 80 is fixed on the base 10, the limiting plate 80 is provided with two second through holes 81, the two second through holes 81 are arranged at intervals along the second direction, and the adjusting rod 60 is provided with a detachable first Two limit pin shafts 62 , the second limit pin shaft 62 passes through any second through hole 81 .

As shown in FIG. 9 , the second limiting pin shaft 62 is spaced from the connecting portion 61 , and the second limiting pin shaft 62 is located on a side of the connecting portion 61 away from the transmission member 40 . The limiting plate 80 is fixed on the base 10, and the second limiting pin 62 is fixedly connected with the adjusting rod 60, that is to say, the second limiting pin 62 and the adjusting rod 60 can be integrally formed, or can be assembled and connected. By removing the second limit pin shaft 62 from the adjustment rod 60, the second limit pin shaft 62 can be inserted into the corresponding second through hole 81 after the adjustment rod 60 rotates, and the second limit pin shaft 62 is connected to the second through hole 81. The adjustment rod 60 is assembled so as to drive the transmission member 40 to move in the first direction, and the length of the second through hole 81 is limited, so the rotation range of the adjustment rod 60 can be limited, thereby limiting the transmission member 40 in the first direction In other words, the first position and the second position can be defined. Here, “the length of the second through hole 81 ” refers to the length of the second through hole 81 in the second direction.

In addition, the cooperation between the second through hole 81 and the second limit pin shaft 62 can also limit the displacement of the adjustment rod 60 along the third direction, preventing the adjustment rod 60 from moving along the third direction, wherein the first direction , the second direction and the third direction are perpendicular to each other.

In some embodiments, the adjusting rod 60 is provided with a mounting plate 63, the mounting plate 63 includes a long plate and a short plate connected to each other in an L shape, the short plate is opposite to the adjusting rod 60, the short plate is provided with an assembly hole, the second The limit pin shaft 62 is passed through the second through hole 81 and the assembly hole at the same time, the second limit pin shaft 62 includes a handle 622 , and the handle 622 is located on a side of the limit plate 80 away from the second gear 41 .

When assembling, first align the mounting plate 63 with the limit plate 80 so that the assembly hole is aligned with the second through hole 81, and then place the second limit pin 62 from a side of the limit plate 80 away from the second gear 41 The side penetrates into the second through hole 81 and the assembly hole, and then the fastener is used to limit the second limit pin 62 from the side of the second limit pin 62 close to the second gear 41, preventing the second The limiting pin shaft 62 escapes from the second through hole 81 . The handle 622 is provided to facilitate the manual operation of the adjustment lever 60, and is convenient for human hands to grasp.

In some embodiments, the winch 1 further includes a limit bracket 90, the limit bracket 90 is arranged on the base 10, the limit bracket 90 is provided with a first clamp 91 and a second clamp 92 opposite to each other, the limit bracket 90 The first mounting hole is defined together with the first clamp 91 , the limiting bracket 90 and the second clamp 92 are jointly defined to define a second mounting hole, and the adjusting rod 60 is passed through the first mounting hole and the second mounting hole at the same time.

As shown in Figure 11, the limit bracket 90 defines a part of the first mounting hole, the first clip 91 defines another part of the first mounting hole, the limit bracket 90 defines a part of the second mounting hole, and the second clamp The collar 92 defines another portion of the second mounting hole. The limit bracket 90 is configured as a strip, and the limit bracket 90 is located under the power output shaft 51, so that the structure of the winch 1 can be made more compact.

In this way, when the adjusting rod 60 is installed, it is only necessary to place the adjusting rod 60 at the corresponding position of the limit bracket 90, and the part of the first installation hole and the part of the second installation hole of the limit bracket 90 will limit the adjustment rod 60. position, to play the role of foolproof; then the first clamp 91 is connected with the corresponding position of the limit bracket 90, and the second clamp 92 is connected with the corresponding position of the limit bracket 90 to realize the adjustment of the adjustment rod 60. The installation has a simple structure and a simplified installation process, so that the cost is reduced.

In some embodiments, as shown in the figure, the adjustment rod 60 is provided with two limit slots 64, and the first clamp 91 and the second clamp 92 are respectively clamped in the corresponding limit slots 64, so that the adjustment The rod 60 is positioned to prevent the adjustment rod 60 from moving along the third direction.

According to the winch 1 of the embodiment of the present invention, one end of the power output shaft 51 is provided with a limit baffle 52, and the limit baffle 52 is located on the side of the transmission part 40 away from the power part 50, so that the transmission part 40 can be prevented from being output from the power output. The shaft 51 is disengaged, and the transmission member 40 is limited. During assembly, the transmission member 40 is sleeved on the power output shaft 51 first, and then the limit baffle 52 is installed in place on the side of the power output shaft 51 away from the power part 50 .

According to the winch 1 of the embodiment of the present invention, the transmission member 40 is provided with a channel 43 penetrating along its axial direction, the power output shaft 51 is penetrated in the channel 43, and one of the inner wall of the channel 43 and the power output shaft 51 is provided with The other guide groove 432 is provided with a guide portion, the guide portion is embedded in the guide groove 432 , and the guide groove 432 extends along the axial direction of the power output shaft 51 .

That is to say, in some embodiments, the inner wall of the channel 43 is provided with a guide groove 432, the guide groove 432 extends along the first direction, the power output shaft 51 is provided with a guide part, the guide part extends along the first direction, and the guide part Embedded in the guide groove 432; in some embodiments, the inner wall of the channel 43 is provided with a protruding guide part, and the power output shaft 51 is provided with a guide groove 432, and both the guide part and the guide groove 432 extend along the first direction .

In this way, the transmission member 40 can only move along the axial direction of the power output shaft 51 without relative rotation with the power output shaft 51 .

According to the winch 1 of the embodiment of the present invention, the diameter of the pitch circle of the second gear 41 is smaller than the diameter of the pitch circle of the first gear 31, so that the deceleration effect on the reel 30 can be realized, and the torque can be increased, so that the power part 50 can pass through relatively A small torque can drive the reel 30 to rotate.

In describing the present invention, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial", "circumferential" ” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific configuration and operation, and therefore should not be construed as limiting the invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims (10)

1. A winch, characterized in that, comprising: A base, a support frame, and a reel, the support frame is set on the base, the reel is sleeved on the support frame, and the reel is provided with a first gear; A transmission part and a power part, the power part is connected with the transmission part to drive the transmission part to rotate, the power part includes a power output shaft, the transmission part is sleeved on the power output shaft, and the transmission The transmission member can move along the axial direction of the power output shaft, the transmission member is provided with a second gear, the transmission member has a first position and a second position, when the transmission member is in the first position , the second gear meshes with the first gear, and when the transmission member is in the second position, the second gear is spaced from the first gear. 2. The winch according to claim 1, further comprising: An adjustment rod, the adjustment rod is rotatably arranged on the base, a connection part is fixed on the adjustment rod, and a first through hole is arranged on the connection part, and the first through hole is configured as a waist holes, the first through holes extending along the second direction; An engaging part, the engaging part is rotatably connected to the transmission part, and a first limit pin is fixed on the engaging part, and the first limit pin passes through the first through-hole, where, The power output shaft extends along a first direction, and the second direction is perpendicular to the first direction. 3. The winch according to claim 2, wherein the extension direction of the first through hole is perpendicular to the axial direction of the second gear. 4. The winch according to claim 2, wherein a first limiting portion is provided on the transmission member, and the first limiting portion and the second gear are aligned along the axial direction of the second gear. The direction is juxtaposed and arranged at intervals, the engaging part is provided with a second limiting part, and the first limiting part and the second limiting part are rotatably connected. 5. The winch according to claim 2, further comprising: A limit plate, the limit plate is fixed on the base, two second through holes are arranged on the limit plate, and the two second through holes are arranged at intervals along the second direction, so A detachable second limit pin shaft is provided on the adjustment rod, and the second limit pin shaft passes through any one of the second through holes. 6. The winch according to claim 5, wherein a mounting plate is provided on the adjusting rod, and the mounting plate includes a long plate and a short plate connected to each other in an L shape, and the short plate is connected to the adjusting rod. The rods are opposite, and an assembly hole is provided on the short plate, and the second limit pin shaft is passed through the second through hole and the assembly hole at the same time, and the second limit pin shaft includes a handle. The handle is located on a side of the limiting plate away from the second gear. 7. The winch according to claim 2, further comprising: A limit bracket, the limit bracket is arranged on the base, the limit bracket is provided with a first clamp and a second clamp relative to each other, and the limit bracket and the first clamp jointly define A first mounting hole is defined, the limiting bracket and the second clip jointly define a second mounting hole, and the adjusting rod is simultaneously passed through the first mounting hole and the second mounting hole. 8 . The winch according to claim 1 , wherein a limit baffle is provided at one end of the power output shaft, and the limit baffle is located on a side of the transmission member away from the power part. 9. The winch according to claim 1, characterized in that, the transmission member is provided with a passage penetrating along its axial direction, the power output shaft passes through the passage, and the inner wall of the passage and One of the power output shafts is provided with a guide groove, and the other is provided with a guide portion, the guide portion is embedded in the guide groove, and the guide groove extends along the axial direction of the power output shaft. 10. The winch of claim 1, wherein the pitch circle diameter of the second gear is smaller than the pitch circle diameter of the first gear.

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