CN214689192U

CN214689192U - Novel automatic latch hook device of dump truck

Info

Publication number: CN214689192U
Application number: CN202121151284.6U
Authority: CN
Inventors: 贾东乐; 郭宝成
Original assignee: Hengtian Dadi Automobile Co ltd
Current assignee: Hengtian Dadi Automobile Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2021-11-12
Anticipated expiration: 2031-05-27

Abstract

The utility model discloses a novel automatic latch hook device of a dump truck, which comprises a latch hook seat fixed below the rear part of a bottom plate of a carriage, wherein a latch hook is hinged at the open end of the latch hook seat; the upper end of the lock hook is fixedly connected with the lower part of the rear door, the middle lower part of the lock hook is hinged with a self-locking chain, and the other end of the self-locking chain is hinged with a shifting fork; the lower part of the shifting fork is connected with a shifting fork seat fixed at the rear end of the chassis through a shifting fork fixing shaft with threads arranged on the outer wall, wherein the shifting fork is in a rabbit ear shape formed at one time through laser cutting, and two shifting forks are symmetrically fixed on two sides of the upper end of the shifting fork fixing shaft; the shifting fork seat is a concave groove formed by bending an isosceles trapezoid plate which is formed in one step by laser cutting. The utility model discloses an adoption laser cutting equipment one-time processing shift fork and shift fork seat that targets in place that sets up not only avoids multiple operation and many workers 'cooperation, both saves labour and saves time, save material again, and the structure is simplified moreover, and intensity satisfies the user demand, can be safe and stable realization tipper's auto-lock.

Description

Novel automatic latch hook device of dump truck

Technical Field

The utility model relates to a tipper technical field, concretely relates to novel automatic latch hook device of tipper.

Background

The dump truck refers to a vehicle which can unload cargos by hydraulic or mechanical lifting, and is also called a dump truck. In civil engineering, a dump truck is often operated in conjunction with an engineering machine such as an excavator, a loader, a belt conveyor, etc. to form a loading, transporting, and unloading line, thereby performing loading, unloading, and transporting operations of earthwork, gravel, and bulk materials.

The self-dumping truck box is an important part for the self-dumping truck to load, unload and transport earthwork, gravel and bulk materials, and is divided into backward tipping and lateral tipping, but the automatic latch hook device cannot be disengaged no matter the self-dumping truck box is tipped backward or laterally. At present, the dumper body and a rear door are greatly damaged and easily deformed in the loading and unloading process, so that the performance requirement on the automatic lock hook is higher and higher.

Taking a backward tipping dumper as an example, the structure diagram of the existing automatic latch device, as shown in fig. 1, includes a latch seat 42, a latch 41, a self-locking chain 43, a fork pulling seat 44 and a fork pulling 45, wherein the fork pulling seat 44 and the fork pulling 45 are structurally and connected as shown in fig. 2 to 3, and the existing fork pulling seat and fork pulling are processed, one is a casting structure, the casting structure has high fork pulling seat and fork pulling cost, and is greatly influenced by environmental protection; the other type is a tailor-welded structure, the fork seat of the tailor-welded structure is matched with a plurality of procedures of blanking of the fork (such as plate shearing, numerical control cutting, machining and drilling, welding of small pieces and slag removal and grinding), and a plurality of plate thicknesses are spliced and welded together and the slag removal and grinding are needed after welding. Therefore, when the shifting fork seat and the shifting fork strength meet the use requirements, the labor and the time are saved, the materials are saved, and the cost is reduced, so that the technical personnel need to solve the problem in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a novel tipper automatic latch hook device is provided, not only can make the shift fork seat and pull out fork intensity and satisfy the user demand, both saved labour moreover and saved time, save material and reduce cost again.

In order to solve the technical problem, the utility model adopts the following technical proposal.

A novel automatic latch hook device of a dumper comprises a latch hook seat fixed below the rear part of a bottom plate of a dumper carriage, wherein a latch hook is hinged at the open end of the latch hook seat; the upper end of the lock hook is fixedly connected with the lower part of the rear door, the middle lower part of the lock hook is hinged with a self-locking chain, and the other end of the self-locking chain is hinged with a shifting fork; the lower part of the shifting fork is connected with a shifting fork seat fixed at the rear end of the chassis through a shifting fork fixing shaft with threads arranged on the outer wall, wherein the shifting fork is in a rabbit ear shape formed at one time through laser cutting, and two shifting forks are symmetrically fixed on two sides of the upper end of the shifting fork fixing shaft; the shifting fork seat is a concave groove formed by bending an isosceles trapezoid plate which is formed in one step through laser cutting.

Preferably, the upper part of the shifting fork is provided with a through hole for penetrating through the B-shaped pin shaft to hinge the self-locking chain.

Preferably, the central position of the shifting fork seat is provided with a threaded through hole for being in threaded connection with the middle part of the shifting fork fixed shaft, and the bending part of the shifting fork seat is an arc angle.

Preferably, the middle lower part of the shifting fork fixing shaft is sleeved with a buffer mechanism which is used for propping against the lower surface of the shifting fork seat and buffering the rigid impact of goods on the rear door in the carrying and running process.

Preferably, the buffer mechanism is a polyurethane rubber ring.

Preferably, the buffer mechanism is a spring.

Due to the adoption of the technical scheme, the utility model has the following technical progress.

The utility model discloses an adoption laser cutting equipment one-time processing shift fork and shift fork seat that targets in place that sets up not only can avoid multiple operation and many workers 'cooperation, both saves labour and saves time, save material again, and the structure is simplified moreover, and intensity satisfies the user demand, can be safe and stable realization tipper's auto-lock.

Drawings

FIG. 1 is a diagram of the old state structure of the present invention;

FIG. 2 is a schematic view of the structure of the old-fashioned shifting fork and shifting fork seat connection front side of the present invention;

FIG. 3 is a schematic view of the structure of the old-fashioned shifting fork and the shifting fork seat;

FIG. 4 is a block diagram of the present invention;

FIG. 5 is a schematic view of the front connection structure of the shifting fork and the shifting fork seat of the present invention;

FIG. 6 is a schematic view of the structure of the side of the fork and the fork seat;

fig. 7 is a development view of the fork seat of the present invention.

Wherein: 1. the automobile comprises a compartment bottom plate, a rear door, a chassis, a lock hook 41, a lock hook seat 42, a lock hook seat 43, a self-locking chain 44, a shifting fork seat 441, a threaded through hole 441, a bending line 442, a shifting fork 45, a through hole 451, a through hole 46, a shifting fork fixing shaft 47, a B-shaped pin shaft 48, a cotter pin 49, a polyurethane rubber ring 410, a flat washer 410, an upper nut 411, a lower nut 412 and a spring 413.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

A novel automatic latch hook device of a dump truck is shown in a combined figure 4 and comprises a latch hook seat 42, a latch hook 41, a self-locking chain 43, a shifting fork 45 and a shifting fork seat 44. The locking hook seat 42 is used for being fixed below the rear part of the dumper bottom plate 1, and the open end of the locking hook seat 42 is hinged with the lower end of the locking hook 41; the upper end of the lock hook 41 is fixedly connected with the lower part of the rear door 2 of the dump truck, the middle lower part of the lock hook 41 is hinged with one end of a self-locking chain 43, and the other end of the self-locking chain 43 is hinged with the upper end of a shifting fork 45; the lower part of the shifting fork 45 is connected with a shifting fork seat 44 through a shifting fork fixing shaft 46 with threads on the outer wall, and the shifting fork seat 44 is fixed at the rear end of the chassis 3.

As shown in fig. 5 to 6, the shifting fork 45 is a rabbit ear type formed by sheet metal unfolding and laser cutting in one step, so that the use effect can be achieved, the procedures of welding, driller, slag cleaning and polishing, plate shearing and blanking and the like are not needed, the appearance is simple and attractive, and the use requirements are met. The two shifting forks 45 are symmetrically fixed on two sides of the upper end of the shifting fork fixing shaft 46. The upper portion of the shifting fork 45 is provided with a through hole 451, the through hole 451 is used for penetrating the B-shaped pin shaft 47 to hinge the self-locking chain 43, the tail end of the B-shaped pin shaft 47 is inserted with an opening pin 48, and the opening pin 48 is used for preventing the B-shaped pin shaft 47 from separating from the shifting fork 45. A flat washer 410 is provided between the cotter pin 48 and the adjacent fork 45, and the flat washer 410 serves to enlarge a contact area between the cotter pin 48 and the fork 45 and to eliminate abrasion between the cotter pin 48 and the fork 45.

An expanded view of the fork seat 44 is shown in fig. 7, and is an isosceles trapezoid plate which is formed in one step by sheet metal expansion and laser cutting, and a threaded through hole 441 is formed in the center of the isosceles trapezoid plate; the concave groove with the using effect can be achieved by bending the bending lines 442 on the two sides of the through hole 441, the bending position of the concave groove is an arc angle, the whole process steps of welding, driller, slag cleaning and polishing, plate shearing and blanking are not needed, the appearance is simple, attractive and elegant, and the using requirements are met. The thread through hole 441 is matched with a thread formed on the outer wall of the shift fork fixing shaft 46, and the thread through hole 441 is used for being in threaded connection with the middle of the shift fork fixing shaft 46, so that the shift fork seat 44 is fixed below the shift fork 45. The upper surface of shift fork seat 44 is provided with upper nut 411, and upper nut 411 and shift fork fixed axle 46 threaded connection, upper nut 411 are used for strengthening fixed effect to shift fork seat 44.

A buffer mechanism is arranged below the shifting fork seat 44, sleeved on the middle lower part of the shifting fork fixing shaft 46 and propped against the lower surface of the shifting fork seat 44. The buffer mechanism can be an elastic polyurethane rubber ring 49 or a spring 413, and is used for buffering the rigid impact of the goods on the rear door 2 in the process of carrying and running of the dump truck.

A lower nut 412 is provided below the damper mechanism, and the lower nut 412 is screwed to the lower portion of the fork fixing shaft 46 and abuts against the lower surface of the damper mechanism. The lower nut 412 is used for fixing the buffer mechanism and adjusting the tension of the buffer mechanism, so that the latch hook 41 and the rear door 2 are flexibly locked, and the safety performance is improved. The number of the lower nuts 412 is two, and can be increased or decreased according to requirements. A flat washer 410 is arranged between the lower nut 412 and the buffer mechanism, and the flat washer 410 is used for enlarging the contact area between the lower nut 412 and the buffer mechanism and eliminating the damage of the lower nut 412 to the lower surface of the buffer mechanism.

When the utility model is used, two shifting forks 45 are symmetrically welded on the upper end of the shifting fork fixing shaft 46; an upper nut 411, a shifting fork seat 44, a buffer mechanism, a flat washer 410 and two lower nuts 412 are fixed on the shifting fork fixing shaft 46 in sequence below the shifting fork 45, and the shifting fork seat 44 is welded at the rear end of the chassis 3; welding a lock hook seat 42 below the rear part of the carriage bottom plate 1, welding the upper end of a lock hook 41 at the lower part of the rear door 2, hinging the middle lower part of the lock hook 41 with one end of a self-locking chain 43, and hinging the other end of the self-locking chain 43 with a shifting fork 45 by utilizing a B-shaped pin shaft 47; when the dump truck does not need to unload, the lock hook seat 42 is hinged with the lock hook 41, and the rear door is closed; when the dump truck unloads, the lock hook seat 42 and the lock hook 41 are separated and the rear door is opened as the platform floor 1 tilts backwards.

Claims

1. A novel automatic latch hook device of a dump truck comprises a latch hook seat (42) fixed below the rear part of a bottom plate (1) of the dump truck, wherein a latch hook (41) is hinged to the open end of the latch hook seat (42); the upper end of the lock hook (41) is fixedly connected with the lower part of the rear door (2), the middle lower part of the lock hook (41) is hinged with a self-locking chain (43), and the other end of the self-locking chain (43) is hinged with a shifting fork (45); the below of shift fork (45) is seted up screwed shift fork fixed axle (46) through the outer wall and is connected with shift fork seat (44) of fixing in chassis (3) rear end, its characterized in that: the shifting forks (45) are in a rabbit ear shape formed in one step by laser cutting, and the two shifting forks (45) are symmetrically fixed on two sides of the upper end of a shifting fork fixing shaft (46); the shifting fork seat (44) is a concave groove formed by bending an isosceles trapezoid plate which is cut by laser and formed at one time.

2. The automatic latch hook device of the novel dump truck according to claim 1, characterized in that: the upper part of the shifting fork (45) is provided with a through hole (451) which is used for penetrating through the B-shaped pin shaft (47) to hinge the self-locking chain (43).

3. The automatic latch hook device of the novel dump truck according to claim 1, characterized in that: the center of the shifting fork seat (44) is provided with a threaded through hole (441) for connecting the middle part of the shifting fork fixing shaft (46) in a threaded manner, and the bending part of the shifting fork seat (44) is an arc angle.

4. The automatic latch hook device of the novel dump truck according to claim 1, characterized in that: the middle lower part of the shifting fork fixing shaft (46) is sleeved with a buffer mechanism which is used for supporting the lower surface of the shifting fork seat (44) and buffering the rigid impact of goods on the rear door (2) in the loading operation process.

5. The automatic latch hook device of the novel dump truck according to claim 4, characterized in that: the buffer mechanism is a polyurethane rubber ring (49).

6. The automatic latch hook device of the novel dump truck according to claim 4, characterized in that: the buffer mechanism is a spring (413).