CN113581309B - Passive tensioning device for track - Google Patents

Abstract

The invention discloses a passive tensioning device for a crawler belt, which comprises a tensioning plate, wherein the tensioning plate is fixedly connected to a crawler belt plate; the first swing arm and the second swing arm are hinged to two sides of the tensioning plate, the swinging piece is hinged to the lower side of the tensioning plate, and the motion planes of the first swing arm, the second swing arm and the swinging piece are parallel to the track shoe; the third swing arm and the fourth swing arm are hinged to two sides of the swinging piece, and the movement planes of the third swing arm and the fourth swing arm are also parallel to the track shoe; the tail ends of the first swing arm and the third swing arm are hinged to a wheel shaft of the crawler wheel, and the tail ends of the second swing arm and the fourth swing arm are hinged to limiting parts. The invention adopts a watt-shaped chain structure, and has the characteristics of rapid tensioning, convenient disassembly and capability of improving the obstacle crossing capability of the track during tensioning.

Description

A track passive tensioning device

technical field

The invention belongs to the field of intelligent obstacle surmounting equipment, in particular to a passive tensioning device for crawler tracks.

Background technique

With the increase of the working time of the crawler drive, the wear between the crawler and the transmission parts will gradually wear out, which will affect the normal operation of the crawler drive. Therefore, in order to offset this normal wear and tear, a tensioning device is often used in the existing crawler transmission parts.

However, most of the current tensioning devices need to be adjusted or maintained regularly, and the relevant personnel may need to adjust the tensioning degree of the tensioning device at any time; in addition, most of the existing tensioning devices are very laborious to install and disassemble, which is not conducive to the later stage. maintain.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned shortcomings in the prior art, the present invention provides a passive tensioning device for crawler tracks, and the specific scheme is as follows:

Including a tension plate, the tension plate is fixedly connected to the track shoe;

The first swing arm and the second swing arm hinged on both sides of the tension plate, the swing piece hinged on the underside of the tension plate, the first swing arm, the second swing arm and the swing arm The moving planes of the parts are all parallel to the track shoes;

a third swing arm and a fourth swing arm hinged on both sides of the swing piece, and the movement planes of the third swing arm and the fourth swing arm are also parallel to the track shoe;

The ends of the first swing arm and the third swing arm are hinged with the axle of the crawler wheel, and the ends of the second swing arm and the fourth swing arm are hinged with a limiting member.

Further, the tension plate is formed into an equilateral triangle, and the position of the tension plate corresponding to the three corners extends outward to form a connection head, and the connection head is fixedly connected to the track shoe through a support column; the connection A connecting groove is formed on the head, and the first swing arm, the second swing arm and the swing piece are extended into the connecting groove and are hinged with the tension plate through the pin shaft.

Further, the swinging member is also shaped into an equilateral triangle, and the positions of the swinging member corresponding to the three corners extend outward to form a connecting piece, and the connecting piece is provided with a shaft hole matched with the pin shaft.

Further, both ends of the third swing arm and the fourth swing arm are formed as connecting forks, and the ends of the first swing arm and the second swing arm extend into the connecting fork through a pin shaft It is hinged with the third swing arm and the fourth swing arm respectively, and the swing piece is hinged with the third swing arm or the fourth swing arm through a pin shaft.

Further, the pin used for hingedly connecting the swing member and the fourth swing arm is a deformed shaft with a bearing embedded therein.

Further, the limiting member includes a chute plate fixedly connected to the crawler plate, and an arc-shaped tensioning chute is provided on the chute plate; it is used for hingedly connecting the second swing arm and the The pin shaft of the fourth swing arm is connected with a sliding block matched with the tensioning chute.

Further, the slider is provided with a locking device.

Further, the crawler wheel includes two wheels arranged on the same axle, and the first swing arm and the third swing arm are located between the two wheels.

The beneficial effects of the present invention are:

The passive tensioning device for crawler belts proposed by the present invention adopts a Watt chain structure, and has the characteristics of rapid tensioning, convenient disassembly, and the ability of the crawler belts to overcome obstacles can be improved at the same time.

Description of drawings

Fig. 1 is the installation schematic diagram I (front view angle) of the present invention,

Fig. 2 is the installation schematic diagram II of the present invention (plan view angle),

Fig. 3 is the structural representation of the present invention,

Fig. 4 is the structural representation of the tension plate of the present invention,

Fig. 5 is the structural schematic diagram of the pendulum member of the present invention,

6 is a schematic structural diagram of the third swing arm of the present invention,

Fig. 7 is the structural schematic diagram of the limiting member of the present invention,

Fig. 8 is the working state schematic diagram I of the present invention,

FIG. 9 is a schematic diagram II of the working state of the present invention.

Serial number and name of the drawings: 1, tension plate, 11, connecting head, 12, support column, 13, connecting groove, 2, track shoe, 3, first swing arm, 4, second swing arm, 5, swing piece , 51, connecting piece, 52, shaft hole, 6, third swing arm, 7, fourth swing arm, 8, crawler wheel, 81, wheel, 9, limit piece, 91, chute plate, 92, tensioning Chute.

Detailed ways

In order to describe the technical content, structural features, achieved objects and effects of the present invention in detail, the following examples are given and described in detail with the accompanying drawings.

As shown in FIGS. 1-3 , the present invention discloses a passive tensioning device for crawler tracks, which includes a tensioning plate 1 , which is fixedly connected to the crawler shoe 2 ; The swing arm 3 and the second swing arm 4 are hinged to the swing member 5 on the underside of the tension plate 1, and the movement planes of the first swing arm 3, the second swing arm 4 and the swing member 5 are all parallel to the track shoe 2; The third swing arm 6 and the fourth swing arm 7 on both sides of the swing member 5, the movement planes of the third swing arm 6 and the fourth swing arm 7 are also parallel to the track shoe 2; the first swing arm 3 and the third swing arm 6 The end of the second swing arm 4 and the end of the fourth swing arm 7 are hinged with the axle of the track wheel 8, and the end of the second swing arm 4 and the fourth swing arm 7 are hinged with the limiting member 9.

2-4, the tension plate 1 is formed into an equilateral triangle, and the position of the tension plate 1 corresponding to the three corners extends outward to form a connector 11, and the connector 11 is fixedly connected to the track shoe 2 through the support column 12; connection; The head 11 is provided with a connecting groove 13 , and the first swing arm 3 , the second swing arm 4 and the swing piece 5 extend into the connecting groove 13 and are hinged with the tension plate 1 through a pin shaft.

2, 3 and 5, the swinging member 5 is also formed into an equilateral triangle, and the position of the swinging member 5 corresponding to the three corners extends outward to form a connecting piece 51, and the connecting piece 51 is provided with a shaft hole that cooperates with the pin shaft. 52.

As shown in Fig. 6, taking the third swing arm as an example, both ends of the third swing arm 6 and the fourth swing arm 7 are formed into connecting forks, and the ends of the first swing arm 3 and the second swing arm 4 extend into the connecting fork The third swing arm 6 and the fourth swing arm 7 are respectively hinged through the pin shaft, and the swing member 5 is hinged with the third swing arm 6 or the fourth swing arm 7 through the pin shaft.

Among them, the pin used for the hinged swinging member 5 and the fourth swing arm 7 is a deformed rotating shaft with a bearing embedded therein, so that the two rotating rods can move smoothly.

As shown in FIG. 7 , the limiting member 9 includes a chute plate 91 fixedly connected to the crawler shoe 2, and an arc-shaped tensioning chute 92 is opened on the chute plate 91; it is used for hingedly connecting the second swing arm 4 and the fourth swing arm The pin shaft of the arm 7 is connected with a sliding block which is matched with the tensioning chute 92 . The slider is provided with a locking device, which can be used to actively lock the position of the slider, so that the slider is fixed in the chute, thereby locking the current state of the track.

Referring to FIG. 2 , the track wheel 8 includes two wheels 81 that are arranged on the same axle, and the first swing arm 3 and the third swing arm 6 are located between the two wheels 81, so that when the tensioning device is in effect, the track wheel is generated The force is relatively balanced to ensure the stability of the entire track wheel when working.

In this application, the Watt chain structure is matched with the chute, so that the tensioning path of the tensioning wheel is clear, and it can automatically adapt to the change of gravity and speed, so as to achieve the tension state matching the running speed of the crawler, and realize rapid tensioning; through the design of the chute The first section of the chute is in a tensioned state, and it can also be designed so that both ends of the chute are in a tensioned state, and the middle of the chute is in a non-tensioned state.

In conjunction with Fig. 1, Fig. 8 and Fig. 9, the working principle of the present invention is as follows:

When the crawler runs counterclockwise as shown in Figure 1 (that is, when the crawler vehicle equipped with this tensioning device is running forward), the crawler wheel is provided with a downward force by the crawler, and the upward force given by the tensioning device, that is, the crawler. The wheel goes up and the passive tension of the track is realized through the deformation of the Watt chain structure, and the front driven wheel (8 in Figure 1) moves upward and forward to improve the obstacle-surmounting performance; when the track runs clockwise as shown in Figure 1, the track The wheel moves downward and forward, which can also achieve automatic tensioning effect; if you want to maintain the current state of the track, you can lock the chute nails to maintain the current state of the track; the resultant force F on the track is required to always be upward.

To sum up, it is only a preferred embodiment of the present invention, and does not limit the protection scope of the present invention. All equivalent changes and modifications made according to the patent scope of the present invention and the contents of the description are all within the scope of the patent of the present invention. .

Claims (6)

1. A crawler passive tensioning device, characterized in that: comprising a tensioning plate (1), the tensioning plate (1) is fixedly connected to the track shoe (2); The first swing arm (3) and the second swing arm (4) hinged on both sides of the tensioning plate (1) are hinged to the swinging member (5) on the lower side of the tensioning plate (1). The movement planes of the first swing arm (3), the second swing arm (4) and the swing piece (5) are all parallel to the track shoe (2); A third swing arm (6) and a fourth swing arm (7) hinged on both sides of the swing member (5), the movement planes of the third swing arm (6) and the fourth swing arm (7) also parallel to the track shoes (2); The ends of the first swing arm (3) and the third swing arm (6) are hinged with the axle of the crawler wheel (8), the second swing arm (4) and the fourth swing arm (7) The end hinged limiter (9) of ; The tensioning plate (1) is formed into an equilateral triangle, and the positions of the tensioning plate (1) corresponding to the three corners extend outward to form a connecting head (11), and the connecting head (11) passes through the support column (12). ) is fixedly connected with the crawler shoe (2); the connecting head (11) is provided with a connecting groove (13), the first swing arm (3), the second swing arm (4) and the The swing piece (5) extends into the connecting groove (13) and is hinged with the tension plate (1) through a pin shaft; The swinging member (5) is also shaped into an equilateral triangle, and the positions of the swinging member (5) corresponding to the three corners extend outward to form a connecting piece (51), and the connecting piece (51) is provided with a connection piece (51). The shaft hole (52) for the pin shaft to fit. 2 . The passive tensioning device for crawler tracks according to claim 1 , wherein both ends of the third swing arm ( 6 ) and the fourth swing arm ( 7 ) are formed as connecting forks, so the The ends of the first swing arm (3) and the second swing arm (4) protrude into the connecting fork through the pin shaft, and are respectively connected with the third swing arm (6) and the fourth swing arm (7). ) is hinged, and the swing piece (5) is hinged with the third swing arm (6) or the fourth swing arm (7) through a pin shaft. 3. The passive tensioning device for crawler tracks according to claim 1, characterized in that: the pin used for hingedly connecting the swing member (5) and the fourth swing arm (7) is a bearing embedded in the inside Deformation shaft. 4 . The passive tensioning device for crawler tracks according to claim 2 , wherein the limiting member ( 9 ) comprises a chute plate ( 91 ) that is fixedly connected to the crawler track shoe ( 2 ). 5 . The chute plate (91) is provided with an arc-shaped tensioning chute (92); the pin used for hingedly connecting the second swing arm (4) and the fourth swing arm (7) is connected with the The sliding block matched with the tensioning chute (92). 5 . The passive tensioning device for crawler tracks according to claim 4 , wherein the sliding block is provided with a locking device. 6 . 6 . The passive tensioning device for crawler tracks according to claim 1 , wherein the crawler wheel ( 8 ) comprises two wheels ( 81 ) which are arranged on the same axle, and the first swing arm (3) and the third swing arm (6) are located between the two wheels (81).

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