Rear tail hook assembly of dumper

Abstract

The utility model discloses a dumper rear tail hook assembly which comprises an upper hook piece, a lower tail hook and a locking device, and the upper hook piece is fixedly installed on the outer side of the bottom of a rear tail door and comprises a fixing base and a holding pin shaft. The lower tail hook is mounted at the bottom of the rear tail of the dumper box body and comprises a tail hook support and a clasping tail hook, the middle of the clasping tail hook is hinged to the tail hook support, and the upper end of the clasping tail hook can be adaptively hooked with the clasping pin shaft; the locking device comprises a vehicle plate fixing seat and a tensioning chain, the vehicle plate fixing seat is fixedly installed on the dumper chassis, one end of the tensioning chain is connected to the vehicle plate fixing seat, and the other end of the tensioning chain is connected to the lower end of the clasping tail hook. The tail hook is simple in structure, convenient to manufacture and firmer; the contact area of the hook is increased, the tensioning force is enhanced, and the hook can be effectively prevented from being damaged; and meanwhile, the detachable pin shaft facilitates subsequent replacement and maintenance, and the loading effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of dump truck technology, specifically to a dump truck rear hook assembly. Background Technology

[0002] Dump trucks are vehicles that unload goods themselves using hydraulic or mechanical lifting. In civil engineering, they are often used in conjunction with excavators, loaders, belt conveyors, and other construction machinery to form loading, transporting, and unloading production lines for earthwork, sand, gravel, and bulk materials. Most existing dump trucks are rear-tipping type, with a rear tailgate that can rotate upwards and is locked in place by a rear hook after closing. However, existing rear hooks often directly hook onto the rear tailgate, with the hook point always at a single point. Prolonged use can damage this point on the tailgate panel, affecting the hook's effectiveness and resulting in a poorer seal on the rear door. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing background technology and provide a tail hook assembly for dump trucks.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a tail hook assembly for a dump truck, including an upper hook, a lower tail hook, and a locking device, wherein the upper hook is fixedly installed on the bottom outer side of the rear tail door and includes a fixing seat and a clamping pin; the lower tail hook is installed on the rear bottom of the dump truck body and includes a tail hook support and a clamping tail hook, the middle part of the clamping tail hook is hinged to the tail hook support, and its upper end can be adapted to engage with the clamping pin; the locking device includes a platform fixing seat and a tension chain, wherein the platform fixing seat is fixedly installed on the dump truck chassis, one end of the tension chain is connected to the platform fixing seat, and the other end is connected to the lower end of the clamping tail hook.

[0005] Furthermore, the fixing seat of the upper hook is welded and fixed to the bottom of the rear tailgate, and is composed of a horizontal base plate and two symmetrical vertical clamping plates. The vertical clamping plates are shaped like "inverted commas". The "heads" of the two vertical clamping plates are welded and fixed to the bottom of the horizontal base plate at intervals, and a fixing hole is provided on it. The clamping pin is horizontally and detachably inserted into the fixing hole.

[0006] Furthermore, the tail hook support in the lower tail hook includes two opposing and spaced-apart clamping seats, which are welded and fixed to the rear bottom of the dump truck body, with a space for the tail hook to move between the two clamping seats; the clamping seats are provided with pin holes, and a pin can be detachably installed inside them.

[0007] Furthermore, the clamping tail hook is welded and fixed from multiple layers of plates, and has an overall sickle-shaped structure. Its upper end is designed in the shape of an eagle hook, which is adapted to the clamping pin shaft. The middle part is provided with a shaft hole, and the aforementioned pin passes through the shaft hole laterally to connect to the clamping tail hook.

[0008] The outer plate of the clamping tail hook has a long strip welding hole, which is welded and fixed to the inner plate; the lower end of the middle plate is arc-shaped and its length is shorter than that of the outer plate. The lower end of the outer plate has a coaxial connection hole, which is connected to the upper end of the tensioning chain by a pin.

[0009] Compared with the prior art, the present invention has the following advantages: the present invention has a simple structure, the tail hook is easy to manufacture and more robust; the contact area of ​​the hook is increased and the tension is stronger, which can effectively prevent the hook from being damaged; at the same time, the detachable pin shaft facilitates subsequent replacement and maintenance, and improves the loading effect. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of the present invention (the locking device is not shown in the figure);

[0011] Figure 2 for Figure 1 Rear assembly view of part A;

[0012] Figure 3 This is a schematic diagram of the upper hook component in this utility model (the horizontal base plate is not shown in the figure);

[0013] Figure 4 This is a schematic diagram of the lower tail hook structure in this utility model;

[0014] Figure 5 This is a schematic diagram of the clamping tail hook structure in this utility model;

[0015] Figure 6 This is a front view of the outer plate of the clamping tail hook in this utility model;

[0016] In the diagram: 1. Upper hook, 2. Lower tail hook, 3. Rear tail door, 4. Rear end beam of the carriage, 11. Vertical clamping plate, 12. Clamping pin, 21. Tail hook support, 22. Clamping tail hook, 23. Pin, 221. Middle plate, 222. Side plate, 223. Welding hole, 224. Shaft hole, 225. Connecting hole. Detailed Implementation

[0017] It should be noted that in the description of this utility model, terms such as "upper", "lower", "bottom", "middle", "outer", "coaxial", "bottom end", "vertical", and "horizontal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are only used to facilitate the description of the structural relationship between the components in this utility model and do not specifically mean that any component in this utility model must have a specific orientation, be constructed and operated in a specific orientation, or be construed as a limitation on this utility model.

[0018] Furthermore, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings:

[0020] like Figure 1 and Figure 2 As shown, a dump truck rear hook assembly includes an upper hook 1, a lower hook 2, and a locking device. The upper hook 1 is fixedly installed on the bottom outer side of the rear tailgate 3, and the lower hook 2 is installed on the outer side of the rear bottom beam 4 of the dump truck body. The two are on the same longitudinal central axis, so that the lower hook 2 can hook the corresponding upper hook 1.

[0021] Combination Figure 3 As shown, the upper hook 1 includes a fixing base and a clamping pin 12. The fixing base consists of a horizontal base plate and two symmetrical vertical clamping plates 11. The vertical clamping plates 11 are shaped like an inverted comma, with their "head" top surface being flat. The horizontal base plate is welded and fixed to the "head" plane of the two vertical clamping plates 11 to increase their strength. The two vertical clamping plates 11 are spaced apart from each other, and a coaxial fixing hole is provided at the "head" of the vertical clamping plates 11. The clamping pin 12 is horizontally and coaxially inserted into the fixing hole and can be disassembled and replaced. When the upper hook 1 is fixed to the rear tailgate 3, the horizontal base plate is welded and fixed to the bottom of the rear tailgate 3, and the tail of the vertical clamping plate 11 is welded and fixed to the outside of the rear tailgate 3 to form a stabilizing component. The horizontal base plate can be removed from the fixing base, and the two vertical clamping plates 11 are directly welded and fixed to the rear bottom of the rear tailgate 3.

[0022] Combination Figures 4 to 6 As shown, the lower tail hook 2 includes a tail hook support 21 and a clamping tail hook 22. The tail hook support 21 includes two opposing and spaced clamping seats. The rear ends of the clamping seats are welded and fixed to the outer side of the rear end beam 4 of the carriage. A tail hook movement space is formed between the two clamping seats. At the same time, a through hole is opened on the rear end beam 4 of the carriage between the two clamping seats. The two clamping seats are respectively provided with opposing coaxial pin holes. The clamping tail hook 22 is movably installed in the tail hook movement space. Its lower end passes through the through hole on the rear end beam 4 of the carriage. A shaft hole 224 is provided in the middle part. A detachable pin 23 passes laterally through the pin hole on the clamping seat and the shaft hole 224 on the clamping tail hook 22 to complete the hinge fixation. The clamping tail hook 22 can rotate around the pin 23.

[0023] The clamping tail hook 22 is welded and fixed from three layers of plates, and is sickle-shaped overall. Its upper end is hook-shaped and is adapted to the clamping pin 12 to achieve coaxial engagement. During processing, a middle plate 221 and two side plates 222 are first cut according to the required shape, which solves the complex situation of difficult overall processing and cutting. The side plates 222 have long strip welding holes. The middle plate 221 is placed between the two side plates 222 with the upper end flush. The welding holes are used to weld and fix the middle plate 221 and the side plates 222. Then, the shaft hole 224 is opened. The lower end of the middle plate 221 is arc-shaped and its length is shorter than that of the two side plates 222. The lower end of the protruding side plates 222 has a coaxial connection hole 225.

[0024] The locking device includes a platform mounting base and a tension chain. The platform mounting base is fixedly installed on the dump truck chassis. One end of the tension chain is connected to the platform mounting base, and the other end is connected to the connecting hole 225 at the lower end of the aforementioned clamping hook 22 via a pin. The specific structure of the locking device is not described in detail here; it can be implemented by adopting or referencing relevant technical solutions in the existing technology.

[0025] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A dump truck rear tail hook assembly, characterized by: The device includes an upper hook, a lower tail hook, and a locking device. The upper hook is fixedly installed on the bottom outer side of the rear tailgate and includes a fixing seat and a clamping pin. The lower tail hook is installed at the rear bottom of the dump truck body and includes a tail hook support and a clamping tail hook. The middle part of the clamping tail hook is hinged to the tail hook support, and its upper end can be adapted to engage with the clamping pin. The locking device includes a platform fixing seat and a tension chain. The platform fixing seat is fixedly installed on the dump truck chassis, and one end of the tension chain is connected to the platform fixing seat, while the other end is connected to the lower end of the clamping tail hook.

2. A rear tailgate hitch assembly for a dump truck as defined in claim 1, wherein: The upper hook assembly has a fixed base welded to the bottom of the rear tailgate. It consists of a horizontal base plate and two symmetrical vertical clamping plates. The vertical clamping plates are shaped like an "inverted comma". The "heads" of the two vertical clamping plates are welded and fixed to the bottom of the horizontal base plate at intervals. Fixed insertion holes are provided on the plates. The clamping pin is horizontally and detachably inserted into the fixed insertion holes.

3. A rear tailgate hook assembly for a dump truck as defined in claim 1, wherein: The tail hook support includes two opposing and spaced-apart clamping seats, which are welded and fixed to the rear bottom of the dump truck body. There is space for the tail hook to move between the two clamping seats. The clamping seats are provided with pin holes, and a pin can be detachably installed inside them.

4. A rear tailgate hook assembly for a dump truck as defined in claim 3, wherein: The clamping tail hook is welded and fixed by multiple layers of plates, and has an overall sickle-shaped structure. Its upper end is set in the shape of an eagle hook, which is adapted to the clamping pin shaft. The middle part is provided with a shaft hole, and the above-mentioned pin passes through the shaft hole laterally to connect the clamping tail hook. The outer plate of the clamping tail hook has a long strip welding hole, which is welded and fixed to the inner plate; the lower end of the middle plate is arc-shaped and its length is shorter than that of the outer plate. The lower end of the outer plate has a coaxial connection hole, which is connected to the upper end of the tensioning chain by a pin.

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