CN109484272B

CN109484272B - Rear compartment door auxiliary locking mechanism of dump truck

Info

Publication number: CN109484272B
Application number: CN201811643898.9A
Authority: CN
Inventors: 王传祥; 高润书; 刘才生
Original assignee: Shandong Juxin Special Vehicle Manufacturing Co ltd
Current assignee: Shandong Juxin Special Vehicle Manufacturing Co ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2023-08-18
Anticipated expiration: 2038-12-29
Also published as: CN109484272A

Abstract

The utility model relates to the technical field of dumpers, in particular to a rear compartment door auxiliary locking mechanism of a dumper, which comprises a dumper body, a cargo compartment, a worm wheel, a guide rail, an auxiliary lock hook, a cam, a lock column and a driving motor; the worm is arranged on the cargo compartment, the worm wheel is arranged on the cargo compartment through a rotating shaft connected with the worm wheel through a key, the worm is meshed with the worm wheel, and the driving motor is arranged on the cargo compartment and connected with the worm; the guide rail is rotatably connected with the rotating shaft, and the auxiliary lock hook is in sliding fit with the guide rail; the cam is fixedly connected with the rotating shaft, an eccentric guide groove is formed in the cam, a sliding block which is in sliding fit with the eccentric guide groove is fixedly arranged on the auxiliary lock hook, and the cam can drive the auxiliary lock hook to stretch through the eccentric guide groove and the sliding block in rotation; the lock column is fixedly arranged on the rear compartment door and matched with the auxiliary lock hook. The auxiliary locking mechanism and the self-locking mechanism of the rear compartment door of the dump truck jointly realize double locking of the rear compartment door, ensure that the self-locking mechanism can lock the rear compartment door after the cargo compartment is reset, effectively prevent the rear compartment door from jumping, and improve the safety.

Description

Rear compartment door auxiliary locking mechanism of dump truck

Technical Field

The utility model relates to the technical field of dumpers, in particular to a rear compartment door auxiliary locking mechanism of a dumper.

Background

The dumper, also called a dump truck, comprises a truck body and a cargo compartment, wherein the cargo compartment is arranged on the truck body in a turnover manner, and the cargo compartment is driven to turn over by a hydraulic lifting system so as to realize automatic unloading. The rear part of the cargo compartment is provided with a rear compartment door, the upper end of the rear compartment door is pivoted with the cargo compartment, and the rear compartment door is kept in a closed state when the cargo compartment is not unloaded, and is opened when the cargo compartment is unloaded. The utility model patent with the application number of 20161258415. X discloses a dump truck, referring to paragraphs 0037-0039 and fig. 8 of the specification of the utility model, a manual hook plate is arranged on the outer side of a rear lower corner, a tail plate stop anti-bouncing plate is welded on the outer side of the rear lower corner, and a manual hook locking shaft is welded on the tail plate (rear compartment door). After the tail plate is closed, the manual hook plate is manually operated to hook the manual hook locking shaft so as to play a role in locking the cargo box, and the manual hook plate and the large tail plate locking hook (the working principle of the large locking hook can be seen from the patent of the utility model with the application number of 20090216307. X and the name of a self-locking assembly of the mining dump truck) jointly realize double locking of the cargo box tail plate, so that the tail plate is prevented from being opened under the condition that the large tail plate locking hook fails in locking. The tail plate stop anti-bouncing plate can prevent the tail plate from bouncing up when the vehicle runs and jolts, so that the tail plate is ensured to be closed firmly. However, the manual hook device and the tailgate stop anti-skip plate have the following disadvantages: (1) After the unloading is finished, in the process of resetting the cargo box, the tail plate is very easy to be unable to reset completely due to the corrosion of part of materials and tail plate pivots which are mixed between the tail plate and the cargo box, and the tail plate cannot be locked by a large locking hook of the tail plate; (2) The manual hook plate can rotate around the manual hook pin shaft, so that the manual hook plate is very easy to break away from the manual hook locking shaft due to bumpy road conditions, and the manual hook plate is invalid; (3) After the tail plate is closed, a gap exists between the tail plate stop anti-jump plate and the manual hook pin shaft (otherwise, the tail plate is not easy to close), so that the tail plate stop anti-jump plate has limited function of limiting the tail plate jumping, and the condition that the tail plate is not firmly closed exists.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides an auxiliary locking mechanism for a rear compartment door of a dump truck, which is used for realizing double locking of the rear compartment door together with a self-locking mechanism, ensuring that the self-locking mechanism can lock the rear compartment door after the cargo compartment is reset, effectively preventing the rear compartment door from jumping and improving the safety.

The technical problems to be solved by the utility model are realized by adopting the following technical scheme: the auxiliary locking mechanism for the rear compartment door of the dump truck comprises a truck body, a cargo compartment, a worm wheel, a guide rail, an auxiliary locking hook, a cam, a locking column and a driving motor; the cargo compartment is pivoted to the vehicle body, a rear compartment door is arranged at the rear end of the cargo compartment, and the upper end of the rear compartment door is pivoted to the cargo compartment; the worm is arranged on the cargo compartment, the worm wheel is arranged on the cargo compartment through a rotating shaft connected with the worm wheel through a key, the worm is meshed with the worm wheel, and the driving motor is arranged on the cargo compartment and connected with the worm; the guide rail is rotatably connected with the rotating shaft, and the auxiliary lock hook is in sliding fit with the guide rail; the cam is fixedly connected with the rotating shaft, an eccentric guide groove is formed in the cam, a sliding block which is in sliding fit with the eccentric guide groove is fixedly arranged on the auxiliary lock hook, and the cam can drive the auxiliary lock hook to stretch out and draw back through the eccentric guide groove and the sliding block in rotation; the lock column is fixedly arranged on the rear compartment door and matched with the auxiliary lock hook.

The technical scheme of the utility model is as follows: and the auxiliary lock hook is provided with a rectangular groove circumscribed with the lock column.

Compared with the prior art, the auxiliary locking mechanism for the rear compartment door of the dump truck has the beneficial effects that: (1) After unloading is finished, in the process of resetting the cargo compartment, the driving motor drives the cam to rotate, the auxiliary lock hook is firstly snapped on the lock column under the action of gravity, so that the rotation of the auxiliary lock hook is limited by the lock column, the cam drives the lock column to retract along with the continued rotation of the cam, the rear compartment door is pulled to be completely closed, and the self-locking mechanism can lock the rear compartment door after resetting the cargo compartment; (2) The auxiliary lock hook is used for pulling the rear compartment door to be completely closed and locking the rear compartment door, and the auxiliary lock hook is tightly attached to the lock column, so that the rear compartment door can be effectively prevented from jumping; (3) The auxiliary lock hook cannot be separated due to self-locking between the worm wheel and the worm, so that the auxiliary lock hook is safe and reliable to lock; (4) The double locking of the rear compartment door is realized together with the self-locking mechanism, so that the safety is improved.

Drawings

Fig. 1 is a schematic structural view of a dump truck.

Fig. 2 is a partial enlarged view of the portion a in fig. 1.

Fig. 3 is a partial enlarged view of a portion B in fig. 1, that is, a state reference diagram of a rear door auxiliary locking mechanism of the dump truck.

Fig. 4 is a state reference diagram of a rear door auxiliary locking mechanism of the dump truck.

Fig. 5 is a state reference diagram three of a rear door auxiliary locking mechanism of the dump truck.

In the figure: 1. the car comprises a car body, 2, a cargo box, 3, a rear car door, 4, a worm, 5, a worm wheel, 6, a guide rail, 7, an auxiliary lock hook, 8, a cam, 9, a lock column, 10, a driving motor, 11, a rotating shaft, 12, an eccentric guide groove, 13, a sliding block, 14, a rectangular groove, 15, a self-locking lock hook, 16, a chain, 17 and a crank.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the following description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings.

As shown in fig. 3 to 5, the auxiliary locking mechanism for the rear door of the dump truck comprises a truck body 1, a cargo compartment 2, a worm 4, a worm wheel 5, a guide rail 6, an auxiliary locking hook 7, a cam 8, a locking column 9 and a driving motor 10.

The cargo compartment 2 is pivoted to the vehicle body 1, a rear compartment door 3 is provided at the rear end of the cargo compartment 2, and the upper end of the rear compartment door 3 is pivoted to the cargo compartment 2.

The worm 4 is mounted on the cargo compartment 2, the worm wheel 5 is mounted on the cargo compartment 2 through a rotating shaft 11 connected with the worm wheel through a key, the worm 4 is meshed with the worm wheel 5, and the driving motor 10 is mounted on the cargo compartment 2 and connected with the worm 4. The guide rail 6 is rotatably connected with the rotating shaft 11, and the auxiliary lock hook 7 is in sliding fit with the guide rail 6. The cam 8 is fixedly connected with the rotating shaft 11, the cam 8 is provided with an eccentric guide groove 12, the auxiliary lock hook 7 is fixedly provided with a sliding block 13 which is in sliding fit with the eccentric guide groove 12, and the cam 8 can drive the auxiliary lock hook 7 to stretch out and draw back through the eccentric guide groove 12 and the sliding block 13. The lock column 9 is fixedly arranged on the rear compartment door 3, the lock column 9 is matched with the auxiliary lock hook 7, and in particular, a rectangular groove 14 circumscribed with the lock column 9 is formed in the auxiliary lock hook 7.

Referring to fig. 1 and 2, the dump truck is provided with a self-locking mechanism, which is of the prior art, and is briefly described below: the self-locking mechanism comprises a self-locking latch hook 15 and a chain 16. The self-locking latch hook 15 is pivoted to the cargo box 2 and matched with the rear box door 3, and a crank 17 is fixedly arranged on the self-locking latch hook 15. Both ends of the chain 16 are pivotally connected to the vehicle body 1 and the crank 17, respectively. When the self-locking mechanism is in a locking state, the chain 16 tightens the self-locking hook 15 through the crank 17, so that the rear compartment door 3 is in a reliable locking state; during unloading, the cargo box 2 is turned over, so that the distance between the connecting point of the chain 16 and the vehicle body 1 and the connecting point of the chain 16 and the crank 17 is shortened, the chain 16 is loosened, the self-locking lock hook 15 is turned over relative to the cargo box 2 under the action of self gravity, and the rear door 3 is opened.

The utility model relates to a working principle of an anti-jump locking mechanism, which comprises the following steps: as shown in fig. 3, when the rear door 3 is in a closed state, the cam 8 rotates to a clockwise limit position, and the auxiliary lock hook 7 tightens the lock column 9 under the action of the cam 8, thereby locking the rear door 3. When the anti-jump locking mechanism is unlocked, the driving motor 10 drives the cam 8 to rotate anticlockwise, and the cam 8 drives the sliding block 13 to move through the eccentric guide groove 12 because the lock column 9 limits anticlockwise rotation of the auxiliary lock hook 7 and the guide rail 6, so that the auxiliary lock hook 7 extends backwards, and when the lock column 9 is separated from the rectangular groove 14 (shown in fig. 4). Then, the auxiliary lock hook 7 and the guide rail 6 are limited to rotate anticlockwise by the gravity of the auxiliary lock hook 7 and the guide rail 6 until the end of the eccentric guide groove 12 is contacted with the sliding block 13, and the cam 8 drives the auxiliary lock hook 7 and the guide rail 6 to rotate anticlockwise to prevent interference with the opening of the rear compartment door 3 (as shown in fig. 5), at this time, the cargo compartment 2 is overturned, and the rear compartment door 3 can be smoothly opened for discharging. After the unloading is finished, in the resetting process of the cargo box 2, the driving motor 10 drives the cam 8 to rotate clockwise, the auxiliary lock hook 7 is firstly snapped on the lock column 9 under the action of gravity, the rotation of the auxiliary lock hook 7 is limited by the lock column 9, and the cam 8 drives the auxiliary lock hook 7 to retract along with the continued rotation of the cam 8, so that the rear door 3 is pulled to be completely closed.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. The utility model provides a locking mechanism is assisted to back railway carriage or compartment door of tipper, includes automobile body (1) and goods railway carriage or compartment (2), goods railway carriage or compartment (2) pin joint in automobile body (1), the rear end of goods railway carriage or compartment (2) is equipped with back railway carriage or compartment door (3), the upper end pin joint of back railway carriage or compartment door (3) is in goods railway carriage or compartment (2), its characterized in that: the novel lock further comprises a worm (4), a worm wheel (5), a guide rail (6), an auxiliary lock hook (7), a cam (8), a lock column (9) and a driving motor (10); the worm (4) is arranged on the cargo box (2), the worm wheel (5) is arranged on the cargo box (2) through a rotating shaft (11) connected with the worm wheel through a key, the worm (4) is meshed with the worm wheel (5), and the driving motor (10) is arranged on the cargo box (2) and connected with the worm (4); the guide rail (6) is rotatably connected with the rotating shaft (11), and the auxiliary lock hook (7) is in sliding fit with the guide rail (6); the cam (8) is fixedly connected with the rotating shaft (11), an eccentric guide groove (12) is formed in the cam (8), a sliding block (13) which is in sliding fit with the eccentric guide groove (12) is fixedly arranged on the auxiliary lock hook (7), and the cam (8) can rotate to drive the auxiliary lock hook (7) to stretch through the eccentric guide groove (12) and the sliding block (13); the lock column (9) is fixedly arranged on the rear carriage door (3), and the lock column (9) is matched with the auxiliary lock hook (7).

2. The rear door assist locking mechanism of a dump truck according to claim 1, characterized in that: the auxiliary lock hook (7) is provided with a rectangular groove (14) circumscribed with the lock column (9).