Crawler belt tensioning device of explosion-proof diesel engine crawler transport vehicle

Abstract

The utility model relates to the technical field of crawler belt tensioning devices, in particular to a crawler belt tensioning device of an explosion-proof diesel engine crawler transport vehicle, which is characterized in that a driving device is arranged on an underframe of the transport vehicle, and the driving device drives a tensioning device; the tensioning device comprises a vertical rod connected with the driving device, the upper end of the vertical rod is fixedly connected with a support, and the support is rotationally connected with a tensioning wheel corresponding to the crawler belt; the driving device comprises two supporting plates fixedly connected with an underframe of the transport vehicle, the opposite ends of the two supporting plates are rotationally connected with worms, the supporting plate on the left side is fixedly connected with a stepping motor used for driving the worms, the supporting plate is fixedly connected with a vertically-arranged sliding rod, and the opposite ends of the top plate and the supporting plate are rotationally connected with a lead screw. The upper end of the lead screw is coaxially and fixedly connected with a worm gear meshed with the worm, the lead screw is in threaded connection with a lifting rod in sliding connection with the sliding rod, and the front end of the lifting rod is fixedly connected with the vertical rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to caterpillar band tensioner technical field, especially a kind of caterpillar band tensioner of explosion-proof diesel engine caterpillar band transport vehicle. BACKGROUND

[0002] Explosion-proof diesel engine caterpillar band transport vehicle is commonly used transport equipment in mining, explosion-proof diesel engine caterpillar band transport vehicle is walked with caterpillar band, and the small ground contact pressure ratio is suitable for the environment of complex road condition and narrow space in coal mine.

[0003] In order to avoid the occurrence of the phenomenon that the teeth of the driving wheel and the caterpillar band plate cannot be completely engaged during the use of the explosion-proof diesel engine caterpillar band transport vehicle, the caterpillar band needs to be maintained and tensioned regularly, so as to ensure the normal use of the explosion-proof diesel engine caterpillar band transport vehicle. However, the tensioning of the caterpillar band of the explosion-proof diesel engine caterpillar band transport vehicle is relatively cumbersome at present, which is not conducive to improving work efficiency. Therefore, the present application provides a caterpillar band tensioner of explosion-proof diesel engine caterpillar band transport vehicle. UTILITY MODEL CONTENT

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a caterpillar band tensioner of explosion-proof diesel engine caterpillar band transport vehicle, which solves the problem of the technical scheme, comprising a transport vehicle chassis, one side of the transport vehicle chassis is provided with a caterpillar band, a driving wheel for driving the caterpillar band is rotatably connected to the transport vehicle chassis, and a supporting wheel is also rotatably installed on the transport vehicle chassis, the supporting wheel is in rolling cooperation with the caterpillar band, characterized in that a driving device is arranged on the transport vehicle chassis, and the driving device drives a tensioning device.

[0005] The tensioning device comprises a vertical rod connected with the driving device, a bracket is fixedly connected to the upper end of the vertical rod, and a tensioning wheel corresponding to the caterpillar band is rotatably connected to the bracket.

[0006] The driving device comprises two supporting plates corresponding to each other and fixedly connected with the transport vehicle chassis, a worm is rotatably connected to the opposite end of the two supporting plates, a stepping motor for driving the worm is fixedly connected to the left supporting plate, the transport vehicle chassis is fixedly connected with a supporting plate, the supporting plate is fixedly connected with a vertically arranged sliding rod, the upper end of the sliding rod is fixedly connected with a top plate, a lead screw is rotatably connected to the opposite end of the top plate and the supporting plate, the upper end of the lead screw penetrates through the top plate and is coaxially fixedly connected with a worm wheel meshing with the worm, the lead screw is threadedly connected with a lifting rod slidingly connected with the sliding rod, and the front end of the lifting rod is fixedly connected with the vertical rod.

[0007] As a preferred, the lifting rod is integrally arranged with a light sleeve slidingly connected with the sliding rod vertically, and the lifting rod is integrally arranged with an internal thread sleeve threadedly connected with the lead screw.

[0008] The utility model has the advantages that:

[0009] When the teeth of the driving wheel and the track plate of the track are not fully engaged and need to be tensioned, the tensioning step motor of the driving device is started in forward rotation, the forward rotation of the tensioning step motor drives the worm to rotate forward, the forward rotation of the worm drives the lead screw to rotate through the worm gear, and then the lead screw drives the lifting rod to move upward along the slide rod, and then the vertical rod moves upward together with the bracket and the tensioning wheel synchronously with the lifting rod, and as the tensioning wheel moves upward, the tensioning wheel supports and abuts against the track, thereby improving the tension of the track, the application has the advantages of simple structure, convenient use and strong practicability. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 It is a first perspective view of the utility model.

[0011] Fig. 2 It is an enlarged view of area A in the first perspective view of the utility model.

[0012] Fig. 3 It is a second perspective view of the utility model.

[0013] REFERENCE NUMERALS

[0014] 1. Transport vehicle chassis, 2. Track, 3. Driving wheel, 4. Support wheel, 5. Driving device, 6. Tensioning device, 7. Vertical rod, 8. Bracket, 9. Tensioning wheel, 10. Support plate, 11. Worm, 12. Step motor, 13. Support plate, 14. Slide rod, 15. Top plate, 16. Lead screw, 17. Worm gear, 18. Lifting rod, 19. Light cover, 20. Internal thread sleeve. DETAILED DESCRIPTION

[0015] The specific embodiments of the utility model are further described in detail below. Figs. 1-3 The specific embodiments of the utility model are further described in detail below.

[0016] The embodiment one is to solve the technical scheme, when the application is used, the transport vehicle chassis 1 is arranged with the track 2, the driving wheel 3 is engaged with the plate of the track 2 through the driving tooth of its outer edge, and then the track 2 can be driven to move, the supporting wheel 4 provides support for the track 2 to facilitate the normal movement of the track 2.When the driving tooth of the driving wheel 3 is not completely engaged with the plate of the track 2 and needs to be tensioned, the tensioning stepping motor 12 of the driving device 5 is started in forward rotation, the tensioning stepping motor 12 in forward rotation drives the worm 11 in forward rotation, the worm 11 in forward rotation drives the lead screw 16 rotatingly installed between the supporting plate 13 and the top plate 15 through the worm wheel 17, and then the lead screw 16 drives the lifting rod 18 to move upward along the slide rod 14, and then the vertical rod 7 together with the support 8 and the tensioning wheel 9 will move upward synchronously with the lifting rod 18, as the tensioning wheel 9 moves upward, the tensioning wheel 9 will support and abut against the track 2, and then the tensioning degree of the track 2 is improved, the application has the advantages of simple structure, convenient use and strong practicability. And the driving device 5 adopts the worm 11 and the worm wheel 17 to cooperate for transmission, the worm 11 and the worm wheel 17 have self-locking property, and the stepping motor 12 also has self-locking property, which can ensure that the driving device 5 can keep the position in non-working state, and then the tensioning state of the track 2 is ensured.

[0017] The embodiment two is based on the embodiment one, when the tensioning degree of the track 2 needs to be adjusted, the driving device 5 drives the tensioning device 6 to move, and then the track 2 is adjusted. Specifically, the stepping motor 12 on the supporting plate 10 is started in forward rotation, the stepping motor 12 in forward rotation drives the worm 11 in forward rotation, the worm 11 in forward rotation drives the lead screw 16 to rotate through the worm wheel 17 engaged therewith, the lead screw 16 rotates to act on the lifting rod 18 through the internal thread sleeve 20, and the lifting rod 18 is limited by the slide rod 14 and the vertical slide connection, so the lead screw 16 drives the lifting rod 18 to move upward along the slide rod 14, and then the vertical rod 7 fixedly connected with the lifting rod 18 will move upward synchronously, and then the support 8 together with the tensioning wheel 9 will move upward, and the tensioning wheel 9 moves upward to support the track 2 upward, and then the tensioning degree of the track 2 is improved.

[0018] Correspondingly, the stepping motor 12 is started in reverse rotation to drive the worm 11 in reverse rotation, and then the lifting rod 18 is driven downward through the worm wheel 17, the lead screw 16 and other components, and then the vertical rod 7 and the tensioning wheel 9 and other related components will also move downward.

Claims

1. A track tensioning device for an explosion-proof diesel engine tracked transport vehicle, comprising a transport vehicle chassis (1), a track (2) arranged on one side of the transport vehicle chassis (1), a drive wheel (3) for driving the track (2) rotatably connected to the transport vehicle chassis (1), and a support wheel (4) rotatably mounted on the transport vehicle chassis (1), the support wheel (4) rollingly engaging with the track (2), characterized in that, A drive unit (5) is arranged on the chassis (1) of the transport vehicle, and the drive unit (5) drives a tensioning device (6). The tensioning device (6) includes a vertical rod (7) connected to the drive device (5), a bracket (8) is fixedly connected to the upper end of the vertical rod (7), and a tensioning wheel (9) corresponding to the track (2) is rotatably connected to the bracket (8). The drive device (5) includes two support plates (10) that are symmetrically positioned and fixedly connected to the chassis (1) of the transport vehicle. The two support plates (10) are rotatably connected to the opposite ends of a worm gear (11). The support plate (10) on the left is fixedly connected to a stepper motor (12) for driving the worm gear (11). The chassis (1) of the transport vehicle is fixedly connected to a support plate (13). The support plate (13) is fixedly connected to a vertically arranged slide rod (14). The upper end of the slide rod (14) is fixedly connected to a top plate (15). The top plate (15) and the support plate (13) are rotatably connected to a lead screw (16). The upper end of the lead screw (16) passes through the top plate (15) and is coaxially fixedly connected to a worm wheel (17) that meshes with the worm gear (11). The lead screw (16) is threadedly connected to a lifting rod (18) that is slidably connected to the slide rod (14). The front end of the lifting rod (18) is fixedly connected to a vertical rod (7).

2. The track tensioning device for an explosion-proof diesel engine tracked transport vehicle according to claim 1, characterized in that, The lifting rod (18) is integrally provided with a smooth sleeve (19) that is vertically slidably connected to the slide rod (14), and the lifting rod (18) is integrally provided with an internal thread sleeve (20) that is threadedly connected to the lead screw (16).

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