CN209534844U - A kind of rear cargo door auxiliary retaining mechanism of dumper - Google Patents

Abstract

The utility model relates to dumper technical field, the rear cargo door of specifically a kind of dumper assists retaining mechanism, including car body, loading space, worm screw, worm gear, guide rail, auxiliary latch hook, cam, lock pillar and driving motor；Worm screw is mounted on loading space, and worm gear is mounted on loading space by the shaft being keyed with it, and worm and wheel engagement, driving motor is mounted on loading space and connect with worm screw；Guide rail is rotatably connected with shaft, and auxiliary latch hook is slidably matched with guide rail；Cam is fixedly connected with shaft, and cam is equipped with eccentric guide groove, assists being installed with the sliding block being slidably matched with eccentric guide groove on latch hook, and cam rotation can assist latch hook flexible by eccentric guide groove and slider-actuated；Lock pillar is installed on rear cargo door, and lock pillar is matched with auxiliary latch hook.The rear cargo door auxiliary retaining mechanism and self-locking mechanism of the dumper of the utility model realize the double locking to rear cargo door jointly, and self-locking mechanism can lock rear cargo door after guaranteeing loading space reset, and rear cargo door can be effectively prevent to beat, and improve safety.

Description

A kind of rear cargo door auxiliary retaining mechanism of dumper

Technical field

The utility model relates to dumper technical field, the rear cargo door of specifically a kind of dumper assists retaining mechanism.

Background technique

Dumper also known as dump truck, including car body and loading space, the turnover installation of loading space on the car body, pass through hydraulic act It rises system drive loading space and overturns achievable automatic discharging.The rear portion of loading space is equipped with rear cargo door, and the upper end of rear cargo door is articulated in loading space, When non-discharge status, rear cargo door is remained off, and when discharging, rear cargo door is opened.Application No. is the realities of 201621258415.X A kind of dumper is disclosed with new patent, referring to the 0037th~0039 section of the specification and attached drawing 8 of the utility model, posterior angle Outside is equipped with manual hook plate, is welded with the anti-springboard of tailgate stop on the outside of posterior angle, is welded with manual extension on tailgate (rear cargo door) Hook lock mandrel.After tailgate closure, manual hook plate is manually operated, manual hook lock shaft is hooked, to play locking loading space Effect, manual hook plate and the big locking bail of tailgate (working principle of big locking bail can be found in application No. is 200920216307.X, A kind of utility model patent of the entitled quarry tipper from lock assembly) the common double locking realized to carriage tail board, in turn Guarantee to avoid tailgate from opening in the case where tailgate big locking bail locking failure.The anti-springboard of tailgate stop can prevent vehicle from running It is jumped on tailgate when jolting, to guarantee the firm of tailgate closure.But the manual hook device and the anti-springboard of tailgate stop exist with Lower disadvantage: (1) discharging after the completion of, in loading space reseting procedure, partial material of the tailgate easily because being mixed between tailgate and loading space And tailgate pivot corrosion and can not reset completely, this, which will lead to the big locking bail of tailgate, can not lock tailgate；(2) manual hook Plate can be rotated around manual hanger pin axis, therefore it is easily detached from manual hook lock shaft because of the road conditions jolted, and leads to its failure； (3) after tailgate closure, there are gap (otherwise tailgate are easily shut off) between the anti-springboard of tailgate stop and manual hook pin shaft, therefore The case where function of the anti-springboard limitation tailgate bounce of tailgate stop is limited, still there is tailgate closure loosely.

Utility model content

Purpose of the utility model is to solve above-mentioned the deficiencies in the prior art, the rear cargo door for providing a kind of dumper is auxiliary Retaining mechanism is helped, realizes the double locking to rear cargo door jointly with self-locking mechanism, self-locking mechanism can incite somebody to action after guaranteeing loading space reset Rear cargo door locking, and rear cargo door can be effectively prevent to beat, improve safety.

Technical problem to be solved in the utility model is realized using following technical scheme: a kind of rear cargo door of dumper Assist retaining mechanism, including car body, loading space, worm screw, worm gear, guide rail, auxiliary latch hook, cam, lock pillar and driving motor；The goods Compartment is articulated in car body, and the rear end of the loading space is equipped with rear cargo door, and the upper end of the rear cargo door is articulated in loading space；The worm screw installation On loading space, the worm gear is mounted on loading space by the shaft being keyed with it, the worm and wheel engagement, the driving Motor is mounted on loading space and connect with worm screw；The guide rail is rotatably connected with shaft, and the auxiliary latch hook and guide rail slide Cooperation；The cam is fixedly connected with shaft, and the cam is equipped with eccentric guide groove, is installed on the auxiliary latch hook and partially The sliding block that heart guide groove is slidably matched, the cam rotation can assist latch hook flexible by eccentric guide groove and slider-actuated； The lock pillar is installed on rear cargo door, and the lock pillar is matched with auxiliary latch hook.

The technical solution of the utility model is also: the auxiliary latch hook is equipped with the rectangular recess circumscribed with lock pillar.

Compared with the existing technology, the rear cargo door auxiliary retaining mechanism of the utility model dumper has the beneficial effect that (1) is unloaded After the completion of material, in loading space reseting procedure, driving motor drives cam rotation, and auxiliary lock hook first rides over lock pillar under gravity On, it limits the rotation for assisting latch hook by lock pillar, continues to rotate with cam, actuated by cams lock pillar retraction draws rear cargo door To being closed completely, self-locking mechanism can lock rear cargo door after guaranteeing loading space reset；(2) rear cargo door is pulled to completely by auxiliary latch hook It after closure and locks, auxiliary latch hook is fitted closely with lock pillar, rear cargo door can be effectively prevent to beat；(3) due to worm gear and worm screw Between it is self-locking, auxiliary latch hook is without departing from therefore its locking is safe and reliable；(4) it is realized jointly with self-locking mechanism to rear cargo door Double locking, improve safety.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of dumper.

Fig. 2 is the partial enlarged view in the portion A in Fig. 1.

Fig. 3 is the partial enlarged view in the portion B in Fig. 1, as the state reference map of the rear cargo door auxiliary retaining mechanism of dumper One.

Fig. 4 is that the rear cargo door of dumper assists the state reference map two of retaining mechanism.

Fig. 5 is that the rear cargo door of dumper assists the state reference map three of retaining mechanism.

In figure: 1, car body, 2, loading space, 3, rear cargo door, 4, worm screw, 5, worm gear, 6, guide rail, 7, auxiliary latch hook, 8, cam, 9, Lock pillar, 10, driving motor, 11, shaft, 12, eccentric guide groove, 13, sliding block, 14, rectangular recess, 15, self-locking latch hook, 16, chain Item, 17, crank.

Specific embodiment

In order to clarify the technical characteristics of the invention, below according to attached drawing to specific embodiment of the present invention make into One step explanation.

As shown in Fig. 3~Fig. 5, a kind of rear cargo door of dumper assists retaining mechanism, including car body 1, loading space 2, worm screw 4, Worm gear 5, guide rail 6, auxiliary latch hook 7, cam 8, lock pillar 9 and driving motor 10.

Loading space 2 is articulated in car body 1, and the rear end of loading space 2 is equipped with rear cargo door 3, and the upper end of rear cargo door 3 is articulated in loading space 2.

Worm screw 4 is mounted on loading space 2, and worm gear 5 is mounted on loading space 2 by the shaft 11 being keyed with it, worm screw 4 and snail 5 engagement of wheel, driving motor 10 are mounted on loading space 2 and connect with worm screw 4.Guide rail 6 is rotatably connected with shaft 11, assists latch hook 7 are slidably matched with guide rail 6.Cam 8 is fixedly connected with shaft 11, and cam 8 is equipped with eccentric guide groove 12, is assisted solid on latch hook 7 Equipped with the sliding block 13 being slidably matched with eccentric guide groove 12, the rotation of cam 8 can be driven by eccentric guide groove 12 and sliding block 13 Assist latch hook 7 flexible.Lock pillar 9 is installed on rear cargo door 3, and lock pillar 9 is matched with auxiliary latch hook 7, specifically, setting on auxiliary latch hook 7 There is the rectangular recess 14 circumscribed with lock pillar 9.

Referring to Fig. 1 and Fig. 2, dumper is equipped with self-locking mechanism, which is the prior art, does below to it simply Introduce: self-locking mechanism includes self-locking latch hook 15 and chain 16.Self-locking latch hook 15 is articulated in loading space 2 and matches with rear cargo door 3, self-locking Crank 17 is installed on latch hook 15.The both ends of chain 16 are respectively pivoted to car body 1 and crank 17.When self-locking mechanism is in locking shape When state, chain 16 tenses self-locking latch hook 15 by crank 17, and rear cargo door 3 is made to be in reliable locking state；When discharging, loading space 2 Overturning makes the tie point of more than 16 car body 1 of chain and the Distance Shortened of chain 16 and the tie point of crank 17, so that chain 16 be made to put Pine, self-locking latch hook 15 is overturn with respect to loading space 2 under the effect of gravity, to open rear cargo door 3.

The working principle of the anti-jump retaining mechanism of the utility model: as shown in figure 3, when 3 closed state of rear cargo door, 8 turns of cam It moves to clockwise extreme position, assists latch hook 7 to tense lock pillar 9 under the action of cam 8, to lock rear cargo door 3.Unlock is anti- When jumping retaining mechanism, driving motor 10 drives cam 8 to rotate counterclockwise, since lock pillar 9 limits auxiliary latch hook 7 and guide rail 6 It rotates counterclockwise, therefore cam 8 passes through eccentric guide groove 12 and drives sliding block 13 mobile, makes that latch hook 7 is assisted rearward to stretch out, works as lock Column 9 is detached from rectangular recess 14 (as shown in Figure 4).Then, it assists the gravity of latch hook 7 and guide rail 6 itself to limit them to turn counterclockwise It is dynamic, until cam 8 drives auxiliary latch hook 7 and guide rail 6 to rotate counterclockwise after the end of eccentric guide groove 12 is contacted with sliding block 13, Prevent interference rear cargo door 3 from opening (as shown in Figure 5), loading space 2 is overturn at this time, and rear cargo door 3 can opening for unloading.Discharging is completed Afterwards, in 2 reseting procedure of loading space, driving motor 10 drives cam 8 to rotate clockwise, and auxiliary latch hook 7 is first taken under gravity On lock pillar 9, limits the rotation for assisting latch hook 7 by lock pillar 9, continue to rotate with cam 8, the driving auxiliary latch hook 7 of cam 8 Retraction, rear cargo door 3 is pulled to and is closed completely.

The embodiments of the present invention are elaborated above in conjunction with attached drawing, but the utility model is not limited to Embodiment is stated, within the knowledge of a person skilled in the art, the utility model aims can also not departed from Under the premise of make a variety of changes.

Claims (2)

1. a kind of rear cargo door of dumper assists retaining mechanism, including car body (1) and loading space (2), the loading space (2) to be articulated in vehicle The rear end of body (1), the loading space (2) is equipped with rear cargo door (3), and the upper end of the rear cargo door (3) is articulated in loading space (2), feature It is: further includes worm screw (4), worm gear (5), guide rail (6), auxiliary latch hook (7), cam (8), lock pillar (9) and driving motor (10)； The worm screw (4) is mounted on loading space (2), and the worm gear (5) is mounted on loading space (2) by the shaft (11) being keyed with it On, the worm screw (4) is engaged with worm gear (5), and the driving motor (10) is mounted on loading space (2) and connect with worm screw (4)；Institute It states guide rail (6) to be rotatably connected with shaft (11), the auxiliary latch hook (7) is slidably matched with guide rail (6)；The cam (8) with Shaft (11) is fixedly connected, and the cam (8) is equipped with eccentric guide groove (12), is installed on the auxiliary latch hook (7) and partially The sliding block (13) that heart guide groove (12) is slidably matched, cam (8) rotation can pass through eccentric guide groove (12) and sliding block (13) driving auxiliary latch hook (7) is flexible；The lock pillar (9) is installed on rear cargo door (3), the lock pillar (9) and auxiliary latch hook (7) Matching.

2. the rear cargo door of dumper according to claim 1 assists retaining mechanism, it is characterised in that: the auxiliary latch hook (7) it is equipped with the rectangular recess (14) circumscribed with lock pillar (9).