Dump trailer

Abstract

The present invention provides a dump trailer, which includes: a carriage body and a carriage door arranged on the carriage body, and also includes a locking device for locking the carriage door, the locking device includes: a first pad and a locking hook. The first pad is detachably connected to the carriage door. One end of the locking hook is movably connected to the carriage body, and the other end of the locking hook can be buckled on the outer surface of the first pad to achieve locking of the carriage door; by flipping the locking hook, the locking hook is separated from the first pad to achieve unlocking of the carriage door. Through modular design, the present invention enables the first pad that is easy to wear in the locking mechanism to be detachably connected to the carriage door, which is convenient for disassembly and replacement, and does not require welding construction, thereby reducing the difficulty of maintenance and saving maintenance costs.

Description

Technical Field

[0001] The invention relates to the field of automobile transportation, and in particular to a dump semitrailer. Background Art

[0002] The compartment door of the dump trailer is provided for easy use during unloading. At the same time, a locking mechanism is provided to lock the compartment door when not unloading. The commonly used locking mechanism includes two parts that cooperate with each other, such as a lock hook and a pad. After the two cooperate with each other for many times, the pad is prone to wear and rust, resulting in poor sealing performance when the rear door of the compartment is closed. Therefore, the locking mechanism needs to be repaired or replaced, which is difficult to operate. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a dump trailer to solve the problems in the prior art that the pad of the vulnerable component is difficult to repair and replace.

[0004] In view of the above technical problems, the present invention proposes a dump semi-trailer, which comprises: a vehicle body and a vehicle door arranged on the vehicle body, and also comprises a locking device for locking the vehicle door, wherein the locking device comprises: a first pad and a lock hook. The first pad is detachably connected to the vehicle door; one end of the lock hook is movably connected to the vehicle body, and the other end of the lock hook can be buckled on the outer surface of the first pad to achieve locking of the vehicle door; the lock hook is turned over to disengage the lock hook from the first pad to achieve unlocking of the vehicle door.

[0005] In a preferred embodiment, the locking device further comprises a second pad; the second pad is fixedly connected to the outer side surface of the compartment door, and the first pad is detachably connected to the second pad.

[0006] In a preferred embodiment, the first backing plate is detachably connected to the second backing plate via fasteners.

[0007] In a preferred embodiment, the second pad includes a first pair of side edges that are oppositely arranged; the first pair of side edges of the second pad are fixedly connected to the outer side surface of the vehicle door, and the second pad is spaced apart from the vehicle door and faces the surface of the vehicle door.

[0008] In a preferred embodiment, the second pad also includes a second pair of side edges arranged opposite to each other; the first pad includes a third pair of side edges arranged opposite to each other, and the third pair of side edges are arranged corresponding to the second pair of side edges of the second pad; wherein the second pair of side edges of the second pad has a first card slot; the third pair of side edges of the first pad has a second card slot, and the second card slot is arranged corresponding to the first card slot of the second pad.

[0009] In a preferred embodiment, the fastener comprises: a semicircular head square neck bolt; the stud of the semicircular head square neck bolt has a square segment, and the square segment can be detachably clamped in the first clamping groove of the second pad.

[0010] In a preferred embodiment, the compartment door is arranged at the rear of the compartment body, and the upper part of the compartment door is hinged to the compartment body; the compartment door can be flipped upward or downward to achieve opening and closing of the compartment door; the locking hook is arranged at a lower and rear position of the compartment body, and the first pad is arranged at a lower and outer position of the compartment door.

[0011] In a preferred embodiment, a mounting seat is provided below and at the rear of the carriage body, and the locking hook is movably connected to the mounting seat via a pin shaft.

[0012] In a preferred embodiment, a control mechanism is further included, and the control mechanism is connected to the locking hook to control the upward or downward flipping of the locking hook.

[0013] In the preferred embodiment, it also includes a lifting mechanism, which is arranged in front of the car body and is used to lift the car body; the locking device also includes a connecting rod mechanism that can cooperate with the lifting mechanism; the connecting rod mechanism is arranged below the car body, and the connecting rod mechanism is connected to the locking hook; when the lifting mechanism lifts the car body, the connecting rod mechanism can cooperate with the lifting mechanism to link the locking hook and rotate the locking hook downward to unlock the car door; when the lifting mechanism drops the car body, the connecting rod mechanism can cooperate with the lifting mechanism to link the locking hook and rotate the locking hook upward to lock the car door.

[0014] In a preferred embodiment, there are multiple first pads.

[0015] Compared with the prior art, the present invention has the following beneficial effects: through modular design, the first pad that is easy to wear in the locking mechanism is detachably connected to the car door, which is convenient for disassembly and replacement, and does not require welding construction, thereby reducing the difficulty of maintenance and saving maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the dump trailer compartment of the present embodiment.

[0017] Figure 2 yes Figure 1 A partial enlarged view of part A.

[0018] Figure 3 It is a rear view of the dump trailer compartment of this embodiment.

[0019] Figure 4 yes Figure 3 A partial enlarged view of part B.

[0020] Figure 5 It is a front view of the connection structure of the first pad and the second pad in this embodiment.

[0021] Figure 6 It is a three-dimensional diagram of the connection structure of the first pad and the second pad in this embodiment.

[0022] Figure 7 It is a top view of the connection structure of the first pad and the second pad in this embodiment.

[0023] Figure 8 It is a side view of the connection structure of the first pad and the second pad in this embodiment.

[0024] The reference numerals in the accompanying drawings are as follows: 2. Carriage body; 21. Side wall panel; 22. Bottom wall panel; 23. Front wall panel; 3. Carriage door; 31. Door body; 32. Door frame; 4. Lock hook; 5. First pad; 51. Third pair of side edges; 511. Second slot; 6. Second pad; 61. First pair of side edges; 62. Second pair of side edges; 621. First slot; 7. Mounting seat; 8. Pin; 91. Semicircular head square neck bolt; 92. Nut; 921. Stud; 922. Semicircular head structure; 10. Connecting rod mechanism. DETAILED DESCRIPTION

[0025] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0026] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. The description of the "front" and "rear" representing the directions below is as follows: unless otherwise specified, the direction toward which the vehicle body normally travels is referred to as "front", and the direction opposite to the direction of travel is referred to as "rear".

[0027] The dump trailer of this embodiment comprises: a traction mechanism, a traveling mechanism, a frame, a carriage and a lifting mechanism. The carriage is arranged on the frame; the lifting mechanism is arranged in front of the carriage to lift the carriage.

[0028] See also Figure 1 and Figure 3The compartment of the dump trailer of this embodiment is used to carry bulk cargo, and includes: a compartment body 2 and a compartment door 3. The compartment body 2 includes two side wall panels 21, a bottom wall panel 22 and a front wall panel 23. The bottom wall panel 22 is located at the bottom of the compartment body 2, the two side wall panels 21 are vertically arranged on both sides of the vehicle body, and the front wall panel 23 is connected to one end of the two side wall panels 21 facing the front of the vehicle body. The width of the compartment door 3 is roughly equal to the width of the compartment body 2, and it is arranged at the rear of the compartment body 2 and at one end of the two side wall panels 21 facing the rear of the vehicle body.

[0029] The upper part of the compartment door 3 along the width direction of the vehicle body is hinged to the top of the two side wall panels 21, and the compartment door 3 can be flipped upward or downward to realize the opening and closing of the compartment door 3. Accordingly, the compartment door 3 includes: a door body 31 and a door frame 32. The door body 31 is roughly square, and the two side edges and bottom edges of the width can be attached to the side wall panels 21 and the bottom wall panels 22 of the compartment body 2 to close the compartment body 2. The door body 31 has an outer surface away from the interior of the compartment, and the door frame 32 is arranged on the outer surface of the door body 31.

[0030] Combination Figure 2 and Figure 4 The dump trailer of this embodiment also includes a locking device for locking the compartment door 3, and the locking device includes: a locking hook 4, a first pad 5 and a second pad 6.

[0031] The lock hook 4 is in an arc-shaped hook shape and is disposed below and at a rear position of the carriage body 2. Accordingly, the lock hook 4 includes an inner end and an outer end, and the inner end is movably connected to the lower surface of the bottom wall plate 22 of the carriage body 2.

[0032] Preferably, a mounting seat 7 is provided below and at the rear of the bottom wall plate 22 of the carriage body 2, and the inner end of the lock hook 4 is movably connected to the mounting seat 7 via a pin shaft 8, so as to facilitate the disassembly of the lock hook 4.

[0033] Furthermore, the locking hook 4 is a high-strength steel plate cut piece and is not easily worn.

[0034] Combination Figures 5 to 8 The first pad 5 and the second pad 6 are both square plates. The second pad 6 is fixedly connected to the outer side below the vehicle door 3, and the first pad 5 is detachably connected to the second pad 6 by fasteners.

[0035] Specifically, the second pad 6 includes: a first pair of side edges 61 and a second pair of side edges 62, and an inner surface and an outer surface. The inner surface of the second pad 6 is a side facing the compartment door 3, and the outer surface of the second pad 6 is a side away from the compartment door 3. The first pair of side edges 61 of the second pad 6 are respectively fixedly connected to the door body 31 and the door frame 32 of the compartment door 3, and the second pair of side edges 62 of the second pad 6 have a first card groove 621. The inner surface of the second pad 6 is spaced from the compartment door 3.

[0036] The first pad 5 includes: a third pair of side edges 51 arranged opposite to each other, which are arranged corresponding to the second pair of side edges 62 of the second pad 6. The third pair of side edges 51 of the first pad 5 each have a second card slot 511, and the second card slot 511 is arranged corresponding to the first card slot 621 of the second pad 6. In this embodiment, the interior of the first card slot 621 is square.

[0037] The fastener includes: a semicircular head square neck bolt 91 and a nut 92. The semicircular head square neck bolt 91 includes: a stud 921 and a semicircular head structure 922 arranged at one end of the stud 921. The stud 921 has a square segment and a thread segment.

[0038] In this embodiment, the opening width of the first slot 621 is slightly larger than the square segment width of the semicircular head square neck bolt 91. The shape of the square segment of the semicircular head square neck bolt 91 matches the square inside the first slot 621. The square segment of the semicircular head square neck bolt 91 can be detachably clamped in the first slot 621 of the second pad 6. Accordingly, the square segment of the semicircular head square neck bolt 91 is clamped in the first slot 621. Since the shape of the square segment of the semicircular head square neck bolt 91 matches the square inside the first slot 621, the bolt cannot rotate when the semicircular head square neck bolt 91 is installed, and it is only necessary to tighten the nut 92 on the outside.

[0039] In other embodiments, the fasteners may also be bolts and nuts of other structures, and when the bolts cooperate with the first pad 5 and the second pad 6: the nut of the bolt protrudes from a surface of the second pad 6 facing away from the first pad 5, the stud of the bolt can be placed in the first slot 621 of the second pad 6 and the second slot 511 of the first pad 5, and the nut cooperates with the stud to achieve the connection between the first pad 5 and the second pad 6. Correspondingly, the first slot 621 and the second slot 511 may also be replaced by connection holes, which is not limited here.

[0040] In this embodiment, by flipping the lock hook 4 upward, the outer end of the lock hook 4 can be buckled on the outer side of the first pad 5 away from the vehicle door 3 to achieve locking of the vehicle door 3. By flipping the lock hook 4 downward, the lock hook 4 is separated from the first pad 5 to achieve unlocking of the vehicle door 3.

[0041] In other embodiments, the second pad 6 may be omitted, and it is sufficient that the first pad 5 is detachably connected to the vehicle door 3 .

[0042] Furthermore, the locking device also includes: a connecting rod mechanism 10 capable of cooperating with the lifting mechanism.

[0043] The connecting rod mechanism 10 is arranged below the carriage. One end of the connecting rod mechanism 10 is connected to the lock hook 4, and the other end is driven by the lifting and falling of the carriage.

[0044] When the lifting mechanism lifts the carriage body 2, the connecting rod mechanism 10 can cooperate with the lifting mechanism to interlock the lock hook 4 and rotate the lock hook 4 downward to unlock the carriage door 3. When the lifting mechanism drops the carriage body 2, the connecting rod mechanism 10 can cooperate with the lifting mechanism to interlock the lock hook 4 and rotate the lock hook 4 upward to lock the carriage door 3.

[0045] In other embodiments, the lock hook may be connected to a control mechanism, and the upward or downward flipping of the lock hook may be controlled by mechanical means, pneumatic means, or hydraulic means.

[0046] In other embodiments, there may be multiple first pads, and the thickness of each first pad may be the same or different. When the lock hook is partially worn, the locking force of the vehicle door can be adjusted by thickening the first pad to ensure the sealing performance of the vehicle door.

[0047] The working principle of locking and unlocking the door of the carriage in this embodiment is as follows: when the lifting mechanism lifts the carriage upward, the end of the carriage facing the front of the vehicle body is gradually lifted, at which time the connecting rod mechanism can cooperate with the lifting mechanism to link the lock hook to flip downward, so that the lock hook is separated from the first pad, and the carriage door is freely swung backward to achieve unlocking of the carriage door. When the lifting mechanism lowers the carriage, the carriage door is freely swung forward to fit with the carriage body, and in this process, the connecting rod mechanism can cooperate with the lifting mechanism to link the lock hook to flip upward, so that the outer end of the lock hook abuts against the first pad, thereby achieving locking of the carriage door.

[0048] The present invention adopts modular design so that the first pad that is easy to wear in the locking mechanism is detachably connected to the compartment door, which is convenient for disassembly and replacement, does not require welding construction, reduces maintenance difficulty, and saves maintenance costs.

[0049] Although the present invention has been described with reference to the above typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be implemented in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the claims or their equivalents should be covered by the appended claims.

Claims

1. A dump semitrailer, comprising: A carriage body and a carriage door arranged on the carriage body, characterized in that the carriage door is arranged at the rear of the carriage body, and the upper part of the carriage door is hinged to the carriage body; the carriage door can be flipped upward or downward to realize opening and closing of the carriage door; Also includes a locking device for locking the compartment door, the locking device comprising: A first pad is detachably connected to the compartment door via a fastener, and the number of the first pad is multiple; A lock hook, one end of which is movably connected to the carriage body, and the other end of which can be buckled on the outer side of the first pad to achieve locking of the carriage door; By flipping the lock hook, the lock hook is separated from the first pad, so as to unlock the compartment door; the locking device also includes a second pad; the second pad is fixedly connected to the outer side of the compartment door, and the first pad is detachably connected to the second pad; The first pad is detachably connected to the second pad via the fastener; The second pad includes a first pair of side edges that are oppositely disposed; The first pair of side edges of the second pad are fixedly connected to the outer side of the compartment door, and the second pad is disposed at a distance from the compartment door and facing the surface of the compartment door; The second pad also includes a second pair of side edges that are oppositely disposed; the first pad includes a third pair of side edges that are oppositely disposed, and the third pair of side edges are disposed correspondingly to the second pair of side edges of the second pad; Wherein, the second pair of sides of the second pad has a first card slot; the third pair of sides of the first pad has a second card slot, and the second card slot is arranged corresponding to the first card slot of the second pad; The fastener comprises: a semicircular head square neck bolt; the stud of the semicircular head square neck bolt has a square segment, and the square segment can be detachably clamped in the first clamping groove of the second pad; When the lock hook is partially worn, the locking force of the compartment door is adjusted by thickening the first pad.

2. The dump trailer according to claim 1, characterized in that: The lock hook is arranged at a lower and rearward position of the carriage body, and the first pad is arranged at a lower outer position of the carriage door.

3. The dump trailer according to claim 2, characterized in that: A mounting seat is provided below and at the rear of the carriage body, and the locking hook is movably connected to the mounting seat via a pin shaft.

4. The dump trailer according to claim 2, characterized in that: It also includes a control mechanism, which is connected to the lock hook and is used to control the lock hook to flip upward or downward.

5. The dump trailer according to claim 2, characterized in that: It also includes a lifting mechanism, which is arranged in front of the carriage body and is used to lift the carriage body; The locking device further comprises a connecting rod mechanism capable of cooperating with the lifting mechanism; the connecting rod mechanism is arranged below the carriage body, and the connecting rod mechanism is connected to the locking hook; When the lifting mechanism lifts the carriage body, the connecting rod mechanism can cooperate with the lifting mechanism to link the locking hook and make the locking hook rotate downward, thereby unlocking the carriage door; When the lifting mechanism drops the carriage body, the connecting rod mechanism can cooperate with the lifting mechanism to link the locking hook and rotate the locking hook upward, thereby achieving the locking of the carriage door.

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