CN101777734A - Handcart control wire plug latching device for switch cabinet - Google Patents

Abstract

The invention relates to a locking device for a control line plug of a handcart of a switchgear, comprising a locking mechanism for preventing the control line plug from being pulled out from a socket and a driving mechanism for driving the locking mechanism to open or lock, wherein the locking mechanism includes a mounting frame , a turret that is rotatably arranged on the mounting frame through a rotating shaft, and a locking bent bar that is arranged on the turret; the drive mechanism includes a push plate, and the push plate is hinged on the cabinet to form a parallel The linkage plate of the connecting rod structure; the end of the push plate facing the handcart panel is pushed by the handcart panel, thereby driving the turret to rotate, so that the locking bend bar rotates to the set position The free end of the locking bent rod is buckled on the connecting handle of the control line plug in the locked state. The invention can not only lock the control line plug in the working position, but also in the middle position between the experimental position and the working position.

Description

Switchgear handcart control line plug locking device

technical field

The invention relates to a locking device on a switch cabinet, in particular to a locking device for a switch cabinet handcart control line plug.

Background technique

At present, in the handcart switchgear, most of the handcarts, such as the control line connector parts of the 35kV voltage handcart, are usually installed in a hidden position on the lower side of the cabinet, which is inconvenient to operate due to the narrow space on the lower side of the cabinet. , When the handcart enters and exits the cabinet, it is easy to touch and take the control line plug out of the socket due to negligence, and even cause the pulling damage of the control line connector parts. In order to prevent the control line plug from being pulled out at the working position, it is usually realized by setting a control line plug locking device in the prior art, but the control line plug locking device in the prior art can only realize locking when the handcart is close to the working position , but between the test/isolation position and the working position, the handcart control line plug is in an unlocked state and can be dialed out, which cannot guarantee reliable control of the electrical interlock, and there is a risk of misoperation.

Contents of the invention

For this reason, the technical problem to be solved by the present invention is that the locking device for the control line plug of the switchgear handcart in the prior art cannot lock the control line plug at the middle position between the experimental position and the working position, and may cause errors. To solve the problem of operation, provide a locking device for the control line plug of the switch cabinet handcart that can also be locked in the middle position between the test position and the working position.

In order to solve the above-mentioned technical problems, a locking device for the control line plug of the switchgear handcart of the present invention includes a locking mechanism that prevents the control line plug from being pulled out from the socket and a driving mechanism that drives the locking mechanism to open or lock, wherein

The locking mechanism includes

a mounting frame, the mounting frame is fixed on the cabinet body;

a turret, said turret being rotatably disposed on said mounting frame via a rotating shaft and biased toward a first position of the turret;

One end of the locking curved rod is a free end, and the other end is a fixed end. The locking curved rod is fixed on the turret through the fixed end, and can be wound around the turret along with the turret. shaft rotation;

The drive mechanism includes

the push plate is biased towards the first position of the push plate;

There are at least two groups of linkage plates, one end of each linkage plate is hinged on the push plate, and the other end of each linkage plate is hinged on the cabinet body, forming a parallel linkage structure. During the rotation of the linkage plate around the hinge shaft, the push plate can be kept moving in parallel;

One side of the push plate can contact and slide with the opposite end of the turret to which the locking bent rod is fixed; the end of the push plate facing the handcart panel is pushed by the handcart panel from the The biasing force of the first position of the push plate moves to the second position of the push plate, thereby driving the turret to rotate from the first position of the turret to the second position of the turret; The second position of the push plate is detached from the push of the handcart panel; when the turret is in the second position of the turret, the free end of the locking bent rod is pressed against the control line plug in the locked state. on the connection handle.

In the aforementioned switchgear handcart control line plug locking device, the end of the turret that can be in contact with the push plate is provided with a first roller.

In the aforementioned switchgear handcart control line plug locking device, the end of the push plate pushed by the handcart is provided with a second roller, and the outer circle of the second roller is flush with or protrudes beyond the push plate to disengage. Push the side close to the panel of the handcart.

In the above-mentioned switch cabinet handcart control line plug locking device, when the push plate is in the first position of the push plate, the top surface of the handcart panel approaches the handcart panel after the push plate is disengaged and pushed. The distance from one side of the push plate is less than or equal to the movable distance between the push plate and the turret toward the direction of the cabinet.

In the above-mentioned locking device for the control line plug of the handcart of the switchgear, a chute suitable for the rolling of the first roller is formed on the corresponding position of the side where the push plate contacts the turret.

In the above-mentioned locking device for the control line plug of the switch cabinet handcart, the free end of the locking bent rod is composed of a crimping section and a turning connection section connecting the crimping section to the fixed end.

The above-mentioned locking device for the control line plug of the switch cabinet handcart is characterized in that: the crimping section is composed of two sections, one is a parallel crimping section parallel to the surface of the control line plug, the other is an inclined crimping section, and the parallel crimping section is One end of the crimping section is connected to the turning connection section, and the other end is connected to the inclined crimping section.

In the above-mentioned locking device for the control line plug of the switch cabinet handcart, the installation frame has two opposite side walls, and the turret is rotatably arranged between the two opposite side walls of the installation frame through the rotating shaft.

The above-mentioned switch cabinet handcart control line plug locking device also includes a fixed plate fixed on the cabinet body, and the hinge connection between each of the linkage plates and the cabinet body is the connection between the linkage plate and the cabinet body. Hinge between fixed plates.

In the aforementioned switchgear handcart control line plug locking device, each set of linkage plates is a pair, and each pair of linkage plates is correspondingly arranged on both sides of the push plate and the fixing plate; Both the mounting frame and the fixing plate are arranged on the top of the cabinet, and the biasing force is gravity.

In the above-mentioned locking device for the control line plug of the handcart of the switch cabinet, the installation frame and the fixing plate are formed on an integral part.

Compared with the prior art, the above-mentioned technical solution of the present invention has the following advantages: 1. The locking device for the control line plug of the switch cabinet handcart of the present invention has a large locking stroke, and can not only lock the control line plug at the working position of the handcart, It can also lock the control line plug at the middle position between the experimental position and the working position; 2. The control line plug locking device of the switch cabinet handcart of the present invention has good synchronization, and can be pushed in and out with the handcart to lock the control line plug. Reliable automatic locking and opening.

Description of drawings

In order to make the content of the present invention more easily understood, the present invention will be described in further detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein

Fig. 1 is the front view of the switchgear handcart control line plug locking device of the present invention when the handcart is in the experimental position;

Fig. 2 is the right side view of the switchgear handcart control line plug locking device when the handcart is in the experimental position of the present invention;

Fig. 3 is the front view of the switchgear handcart control line plug locking device when the handcart is in the working position of the present invention;

Fig. 4 is the right side view of the control line plug locking device of the switch cabinet handcart when the handcart is in the working position of the present invention;

Fig. 5 is a bottom view of the switchgear handcart control line plug locking device of the present invention when the handcart is in the working position

Fig. 6 is a perspective view of the control line plug locking device of the switch cabinet handcart according to the present invention.

The reference signs in the figure are represented as: 1-mounting frame, 2-rotating shaft, 3-turret, 4-first roller, 5-locking bending rod, 6-connecting handle, 7-fixing plate, 8-linking plate, 9-push plate, 10-handcart panel, 11-second roller, 12-chute, 13-control line plug.

Detailed ways

As shown in Figures 1 to 6, a locking device for a switch cabinet handcart control line plug in Embodiment 1 includes a locking mechanism that prevents the control line plug 13 from being pulled out from the socket and drives the locking mechanism to open or lock drive mechanism, of which

The locking mechanism includes a mounting frame 1, a rotating frame 3, and a locking curved rod 5, the mounting frame 1 is fixed on the cabinet body; the rotating frame 3 is rotatably arranged on the mounting frame 1 through a rotating shaft 2 , and is subjected to a biasing force tending to the first position of the turret; one end of the locking curved rod 5 is a free end, and the other end is a fixed end, and the locking curved rod 5 is fixed on the fixed end through the fixed end on the turret 3, and can rotate around the shaft 2 with the turret 3;

The driving mechanism includes a push plate 9 and a linkage plate 8, and the push plate 9 is subjected to a bias force tending to the first position of the push plate; the linkage plate 8 has at least two groups, each of which is linked One end of the plate 8 is hinged on the push plate 9, and the other end of each linkage plate 8 is hinged on the cabinet to form a parallel linkage structure. When the linkage plate 9 rotates around the hinge axis In, can keep described push plate 9 to move in parallel;

One side of the push plate 9 can contact and slide with the opposite end of the turret 3 to which the locking bent rod 5 is fixed; The pushing of the panel 10 moves the biasing force from the first position of the push plate to the second position of the push plate, thereby driving the turret 3 to rotate from the first position of the turret to the second position of the turret. position; the push plate 9 is detached from the push of the handcart panel 10 at the second position of the push plate; when the turret 3 is in the second position of the turret, the free end of the locking bent rod 5 Buckle and press on the connecting handle 6 of the control line plug 13 in the locked state.

Wherein, the first position of the turret is when the turret 3 is not pushed by the push plate 9, it is suspended in the position of the mounting frame 1 in a natural state; the second position of the turret is that the turret 3 is supported by The pushing of the push plate 9 rotates to the position where the locking bent bar locks the control line plug 13; the biasing force of the turret 3 can come from the gravity of the turret 3 itself, or from another The spring force of the spring on the turret 3.

The first position of the push pedal is that the push pedal 9 is not pushed by the handcart panel 10, and hangs on the cabinet body in a natural state; the second position of the push pedal is that the push pedal 9 is received by the handcart. The promotion of the panel 10 is the highest position around the hinge axis; the biasing force of the push plate 9 comes from the gravity of the push plate.

In this embodiment, a first roller 4 is provided on one end of the turret 3 that can be in contact with the push plate 9 . The setting of the first roller 4 can reduce the friction between the push plate 9 and the contact end on the turret 3 when the push plate 9 is pushed by the handcart panel 10, so that the push plate 9 The plate 9 can smoothly push the end of the turret 3 that is in contact with the push plate 9 , so that the turret 3 rotates 2 around the axis of rotation. In order to reduce the friction when the handcart panel 10 just starts to push the push plate 9, it is convenient for the handcart panel 10 to push the push plate 9 from the bias force of the first position of the push plate to the push plate The second position of the push plate 9 is provided with a second roller 11 on the end pushed by the handcart, and the outer circle of the second roller 11 is flush with or protrudes from the push plate 9 after it is disengaged from pushing. One side of the handcart panel 10. When the push plate 9 is in the first position of the push plate, the distance from the top surface of the handcart panel 10 to the side of the handcart panel 10 after the push plate 9 is detached from the push is less than or equal to The movable distance between the push plate 9 and the turret 3 towards the direction of the cabinet body. A chute 12 suitable for the rolling of the first roller 4 is formed on the corresponding position of the side of the push plate 9 in contact with the turret 3 . The free end of the locking curved rod 5 is composed of a crimping section and a turning connection section connecting the crimping section to the fixed end. In order to make the free end of the locking curved rod 5 reliably buckle on the connecting handle on the control line plug 13 to realize reliable locking, the buckling section is composed of two sections, one section is connected with the control line plug 13 The surface is parallel to the parallel crimping section, and the other section is an inclined crimping section, one end of the parallel crimping section is connected to the turning connection section, and the other section is connected to the inclined crimping section. The installation frame 1 has two opposite side walls, and the turret 3 is rotatably arranged between the two opposite side walls of the installation frame 1 through the rotating shaft 2 .

In other embodiments, it also includes a fixed plate 7 fixed on the cabinet body, and the hinge connection between each of the linkage plates 8 and the cabinet body is the connection between the linkage plate 8 and the fixed plate 7. hinges between. Each group of said linkage plates 8 is a pair, and each pair of said linkage plates 8 is correspondingly arranged on both sides of said push plate 9 and said fixed plate 7; The plates 7 are all arranged on the top of the cabinet body, and the biasing force is gravity. The mounting frame 1 and the fixing plate 7 are formed on an integral part.

The working process of the switchgear handcart control line plug locking device of the present invention:

When the handcart advances from the experimental position to the working position, the handcart panel 10 on the handcart exerts a thrust on the push plate 9 through the second roller 11, so that the push plate 9 moves from the first position of the push plate to the second position of the push plate , because the push pedal 9 is limited by the linkage plate 8 and the hinged shaft, it can only be displaced forward and upward, and stops moving when the upward displacement is higher than the handcart panel 10. Because the first roller 4 on the turret 3 is in contact with the push plate 9, under the promotion of the push plate 9, the first roller 4 moves upward with the push plate 9, so that the turret 3 moves from the first position of the turret around the rotating shaft 2 Rotate to the second position of the turret, the locking bent bar 5 rotates downwards with the turret 3 and reaches the front side of the control line connector, and presses on the connecting handle 6 of the control line plug 13 to lock the control line plug. At the middle position and the working position, since the push plate 9 is always under the force exerted by the handcart panel 10, the push plate 9 cannot be reset, so that the turret 3 and the locking bending rod arranged on the turret 3 cannot be reset and remain locked. , so as to achieve reliable locking in the intermediate position and the working position.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (11)

1. a switchgear handcart control line plug locking device, comprising a locking mechanism that prevents the control line plug (13) from being pulled out from the socket and a driving mechanism that drives the unlatching or locking of the locking mechanism, wherein: The locking mechanism includes A mounting frame (1), the mounting frame (1) is fixed on the cabinet body; a turret (3), the turret (3) is rotatably arranged on the mounting frame (1) via a rotating shaft (2), and is subjected to a biasing force tending to a first position of the turret; A locking curved rod (5), one end of the locking curved rod (5) is a free end, and the other end is a fixed end, and the locking curved rod (5) is fixed on the turret (3) through the fixed end on, and can rotate around the shaft (2) with the turret (3); The drive mechanism includes The push plate (9) is subject to a bias force tending to the first position of the push plate; The linkage plate (8) has at least two groups, one end of each linkage plate (8) is hinged on the push plate (9), and the other end of each linkage plate (8) is hinged on the push plate (9). On the cabinet body, a parallel link structure is formed to keep the push plate (9) moving in parallel during the process of the linkage plate (9) rotating around the hinge axis; One side of the push plate (9) can contact and slide with the opposite end of the turret (3) to which the locking bent rod (5) is fixed; the push plate (9) faces the handcart panel One end of (10) is pushed by the handcart panel (10) to move from the biasing force of the first position of the push pedal to the second position of the push pedal, thereby driving the turret (3) from the The first position of the turret rotates to the second position of the turret; the push plate (9) breaks away from the push of the handcart panel (10) at the second position of the push plate; when the turret (3) When the turret is in the second position, the free end of the locking bent rod (5) is pressed against the connecting handle (6) of the control line plug (13) in the locked state. 2. The plug locking device for the switchgear handcart control line plug according to claim 1, characterized in that: the end of the turret (3) that can be in contact with the push plate (9) is provided with a first roller (4 ). 3. The switchgear handcart control line plug locking device according to claim 1, characterized in that: the end of the push plate (9) pushed by the handcart is provided with a second roller (11), and the The outer circle of the second roller (11) is flush with or protrudes from the side close to the handcart panel (10) after the pushing plate (9) is disengaged from pushing. 4. The locking device for the control line plug of the handcart of the switchgear according to claim 3, characterized in that: when the push plate (9) is in the first position of the push plate, the handcart panel (10) The distance from the top surface of the push plate (9) to the side close to the handcart panel (10) after being disengaged from the push is less than or equal to the distance between the push plate (9) and the turret (3) towards the The movable distance in the direction of the cabinet. 5. The plug locking device for switchgear handcart control line plug according to claim 4, characterized in that: the corresponding position of the side of the push plate (9) in contact with the turret (3) is formed with a suitable The chute (12) where the first roller (4) rolls. 6. The locking device for the control line plug of the switchgear handcart according to any one of claims 1-5, characterized in that: the free end of the locking bent bar (5) is connected by a crimping section and the crimping section It is composed of a turning connection section on the fixed end. 7. The locking device for the control line plug of the switch cabinet handcart according to claim 6, characterized in that: the withholding section is composed of two sections, one section is a parallel withholding section parallel to the surface of the control line plug (13), The other section is an inclined crimping section, one end of the parallel crimping section is connected to the turning connection section, and the other section is connected to the inclined crimping section. 8. The plug locking device for the switchgear handcart control line plug according to claim 7, characterized in that: the mounting frame (1) has two opposite side walls, and the turret (3) passes through the rotating shaft (2) It is rotatably arranged between two opposite side walls of the installation frame (1). 9. The switchgear handcart control line plug locking device according to any one of claims 1-5, characterized in that: it also includes a fixing plate (7) fixed on the cabinet body, each of the The hinge between the linkage plate (8) and the cabinet body is the hinge between the linkage plate (8) and the fixed plate (7). 10. The plug locking device for the switchgear handcart control line plug according to claim 9, characterized in that: each set of said linkage plates (8) is a pair, and each pair of said linkage plates (8) corresponds to are arranged on both sides of the push plate (9) and the fixed plate (7); the installation frame (1) and the fixed plate (7) are all arranged on the top of the cabinet, and All force is gravity. 11. The locking device for the control line plug of the handcart of the switchgear according to claim 10, characterized in that: the installation frame (1) and the fixing plate (7) are formed on an integral part.

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