Inclination and tip-back prevention self-dumping semitrailer

Abstract

The utility model relates to the technical field of semitrailers, and discloses an anti-tilt and anti-tipping self-dumping semitrailer which comprises a semitrailer head, a semitrailer frame and a self-dumping carriage, the semitrailer frame is arranged at the rear end of the semitrailer head, the self-dumping carriage is arranged at the upper end of the semitrailer frame, and the upper end face of the semitrailer frame is fixedly connected with a support. Four connecting pieces are transversely arranged on the rear portion of the center of the upper end face of the support, each connecting piece comprises a connecting base, a rotating base is rotationally connected to the interior of each connecting base, each rotating base penetrates through the upper inner wall of the corresponding connecting base and extends to the upper end of the corresponding connecting base, the end of each rotating base is fixedly connected to the lower end face of the dump truck carriage, and a limiting rod is arranged on one side wall of each connecting base. According to the utility model, by additionally arranging the connecting pieces, the multi-point support between the carriage and the frame can be realized, the load can be dispersed, the overall stability can be improved, the local stress concentration can be reduced by multi-point support, the contact area between the carriage and the frame can be enlarged by widening the connecting pieces, and the support foundation can be increased, so that the stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of semi-trailer technology, and in particular to an anti-tilting, self-unloading semi-trailer. Background Technology

[0002] A semi-trailer is a common commercial vehicle consisting of a tractor unit and a semi-trailer. The characteristic of a semi-trailer is that part of its weight is borne by the tractor unit, while the other part is supported on the ground by outriggers or wheels. Unlike a full trailer, the connection method of a semi-trailer makes it more flexible in turning and maneuvering. It is widely used in long-distance transportation, cargo distribution, construction, and industrial fields. A dump semi-trailer is a special type of semi-trailer that combines the transport capacity of a semi-trailer with its self-unloading function. Its main feature is the ability to quickly and efficiently unload loaded materials. Typically, a hydraulic system is used to lift the cargo bed, allowing the material to be dumped from the rear or side.

[0003] Some problems still exist in the use of existing dump semi-trailers. During the unloading process, as the material is poured out of the trailer, the center of gravity of the trailer changes. If the center of gravity shifts too much, the vehicle may lose balance and tilt. Therefore, those skilled in the art have provided an anti-tilt and rear-tipping dump semi-trailer to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an anti-tilting rear-dumping semi-trailer. By adding connecting parts, it can achieve multi-point support between the cargo box and the frame, distribute the load, and improve overall stability. Multi-point support can reduce local stress concentration and lower the risk of damage to the connection parts. Widening the connecting parts can increase the contact area between the cargo box and the frame, increase the support foundation, and thus improve stability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-tilt and rear-dumping semi-trailer, including a cab, a frame, and a dump truck body. The frame is located at the rear end of the cab, and the dump truck body is located at the upper end of the frame. A bracket is fixedly connected to the upper surface of the frame, and four connecting pieces are arranged laterally at the rear center of the upper surface of the bracket.

[0006] The connector includes a connecting seat, and a rotating seat is rotatably connected inside the connecting seat. The rotating seat passes through the upper inner wall of the connecting seat and extends to the upper end of the connecting seat, and its end is fixedly connected to the lower end face of the dump truck body. A limiting rod is provided on one side wall of the connecting seat. One end of the limiting rod passes through one end face of the connecting seat, one end face of the rotating seat, and one inner side wall of the connecting seat in sequence and extends to the other end of the connecting seat. The end of the limiting rod is provided with a pressure groove.

[0007] The upper surface of the vehicle frame is equipped with buffer components on both front sides.

[0008] By adding connectors, the above technical solutions can achieve multi-point support between the dump truck body and the frame, thus distributing the load and improving overall stability. Multi-point support can reduce local stress concentration and lower the risk of local damage to connectors. Widening the connectors can increase the contact area between the dump truck body and the frame, increasing the support base and thereby improving stability.

[0009] Furthermore, the buffer assembly includes a base, a first groove is provided at the center of the upper end face of the base, a first electromagnet is provided inside the first groove, a top seat is fixedly connected to the lower end face of the upper end of the dump truck body, a second groove is provided at the center of the lower end face of the top seat, and a second electromagnet is provided inside the second groove.

[0010] With the above technical solution, after unloading, the hydraulic cylinder is controlled to retract, which moves the dump truck body downward. Then, the two first electromagnets and two second electromagnets are activated. The two first electromagnets and two second electromagnets repel each other, thereby generating a certain thrust when the two first buffer pads and two second buffer pads come into contact, preventing direct fall and causing a large noise and impact, which would damage the dump truck body and frame.

[0011] Furthermore, the first electromagnet is fixedly connected to the upper end of the base with a first buffer pad, and the second electromagnet is provided with a second buffer pad on the lower end surface of the top seat;

[0012] Through the above technical solution, the two first buffer pads and the second buffer pad can further enhance this buffering performance and improve the service life of the equipment.

[0013] Furthermore, the vehicle frame is provided with support components on both sides of the center. Each support component includes an outer triangular square tube, which is rotatably connected to the inner side wall of the vehicle frame. A first inner triangular square tube is slidably connected to the upper end of the outer triangular square tube. A second inner triangular square tube is slidably connected to the upper end of the first inner triangular square tube. A third inner triangular square tube is slidably connected to the upper end of the second inner triangular square tube. A connecting turntable is fixedly connected to the upper part of the center of one side wall of the third inner triangular square tube. The connecting turntable is rotatably connected to the lower end surface of the dump truck body.

[0014] Through the above technical solution, during the self-unloading process, the self-unloading truck body pulls the two connecting turntables upward, thereby pulling out the third inner triangular square tube, the second inner triangular square tube and the first inner triangular square tube in succession. While the stability is improved by the four connecting parts, the two support components can also guide the lifting self-unloading truck body, thereby improving the anti-tilting ability.

[0015] Furthermore, a rear-tipping hydraulic cylinder is rotatably connected at the center of the interior of the vehicle frame, and the output end of the rear-tipping hydraulic cylinder is rotatably connected at the center of the lower end face of the dump truck body.

[0016] With the above technical solution, after the rear tilting hydraulic cylinder is started, the rear tilting hydraulic cylinder pushes the dump truck body upward. Due to the connection of the four connecting parts, the dump truck body rotates around the four connecting parts as the axis, thereby realizing self-unloading.

[0017] Furthermore, the two support components are symmetrically arranged with respect to the dump truck body as the axis;

[0018] The above technical solution allows two support components to support the dump truck body in the same position, improving stability.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, the anti-tilt and self-dumping semi-trailer can achieve multi-point support between the cargo box and the frame by adding connecting parts, which can distribute the load and improve the overall stability. Multi-point support can reduce local stress concentration and reduce the risk of damage to the connection parts. Widening the connecting parts can increase the contact area between the cargo box and the frame and increase the support foundation, thereby improving stability.

[0021] 2. In this utility model, during the self-unloading process, the self-unloading truck body pulls the two connecting turntables upward, thereby pulling out the third inner triangular square tube, the second inner triangular square tube and the first inner triangular square tube in succession. While the stability is improved by the four connecting parts, the two support components can also guide the lifting self-unloading truck body, thereby improving the anti-tilting ability.

[0022] 3. In this utility model, after unloading is completed, the rear tilting hydraulic cylinder is controlled to retract, which moves the dump truck body downward. Then, the two first electromagnets and two second electromagnets are controlled to start. The two first electromagnets and two second electromagnets repel each other, thereby generating a certain thrust when the two first buffer pads and two second buffer pads come into contact, preventing direct fall and causing a large noise and impact that could damage the dump truck body and frame. In addition, the two first buffer pads and two second buffer pads can further enhance this buffering property and improve the service life of the equipment. Attached Figure Description

[0023] Figure 1 This is a perspective view of the anti-tilting and self-unloading semi-trailer proposed in this utility model.

[0024] Figure 2 This is a side view of the anti-tilting and self-unloading semi-trailer proposed in this utility model.

[0025] Figure 3 This is a perspective view of the anti-tilting and self-unloading semi-trailer support assembly proposed in this utility model.

[0026] Figure 4 for Figure 1Enlarged view of point A in the middle;

[0027] Figure 5 This is a side sectional view of the anti-tilting and self-unloading semi-trailer buffer assembly proposed in this utility model.

[0028] Legend:

[0029] 1. Truck cab; 2. Dump truck body; 3. Connecting parts; 301. Connecting seat; 302. Rotating seat; 303. Limiting rod; 304. Pressing groove; 4. Bracket; 5. Truck frame; 6. Rear tipping hydraulic cylinder; 7. Support assembly; 701. Outer triangular square tube; 702. First inner triangular square tube; 703. Second inner triangular square tube; 704. Third inner triangular square tube; 705. Connecting turntable; 8. Buffer assembly; 801. Base; 802. First groove; 803. First electromagnet; 804. First buffer pad; 805. Top seat; 806. Second groove; 807. Second electromagnet; 808. Second buffer pad. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1-5 This utility model provides an embodiment of an anti-tilting rear-dumping semi-trailer, including a cab 1, a frame 5, and a dump truck body 2. The frame 5 is located at the rear end of the cab 1, and the dump truck body 2 is located at the upper end of the frame 5. A bracket 4 is fixedly connected to the upper end surface of the frame 5. Four connecting pieces 3 are arranged laterally at the rear center of the upper end surface of the bracket 4. By adding connecting pieces 3, multi-point support between the dump truck body 2 and the frame 5 can be achieved, the load can be distributed, and the overall stability can be improved.

[0032] The connector 3 includes a connector 301, with a rotating seat 302 rotatably connected inside the connector 301. The rotating seat 302 passes through the inner wall of the connector 301 and extends to the upper end of the connector 301, with its end fixedly connected to the lower end face of the dump truck body 2. A limiting rod 303 is provided on one side wall of the connector 301. One end of the limiting rod 303 passes through one end face of the connector 301, one end face of the rotating seat 302, and one inner side wall of the connector 301, extending to the other end of the connector 301. The end of the limiting rod 303 is provided with a pressure groove 304. By adding the connector 3, multi-point support between the dump truck body 2 and the frame 5 can be achieved, the load can be distributed, and the overall stability can be improved. Multi-point support can reduce local stress concentration and reduce the risk of local damage to the connector 3. Widening the connector 3 can increase the contact area between the dump truck body 2 and the frame 5, increase the support base, and thus improve stability.

[0033] Both sides of the upper surface of the frame 5 are equipped with buffer components 8, which provide cushioning and improve the service life of the equipment.

[0034] like Figure 1 , 2 As shown in Figure 5, the buffer assembly 8 includes a base 801. A first groove 802 is formed at the center of the upper surface of the base 801. A first electromagnet 803 is installed inside the first groove 802. A top seat 805 is fixedly connected to the lower surface of the dump truck body 2 at the upper end of the base 801. A second groove 806 is formed at the center of the lower surface of the top seat 805. A second electromagnet 807 is installed inside the second groove 806. After unloading, the rear tilting hydraulic cylinder 6 is controlled to retract, which moves the dump truck body 2 downward. Then, the two first electromagnets 803 and the two second electromagnets 807 are activated. The two first electromagnets 803 and the two second electromagnets 807 repel each other, thereby generating a certain thrust when the two first buffer pads 804 and the two second buffer pads 808 come into contact, preventing direct fall and causing a large noise and impact, which could damage the dump truck body 2 and the frame 5.

[0035] The first electromagnet 803 is fixedly connected to the upper end of the base 801 with a first buffer pad 804, and the second electromagnet 807 is provided with a second buffer pad 808 on the lower end surface of the top seat 805. The two first buffer pads 804 and the second buffer pad 808 can further enhance this buffering property and improve the service life of the equipment.

[0036] like Figure 1 , 2As shown in Figure 3, support components 7 are provided on both sides of the center of the frame 5. The support components 7 include an outer triangular square tube 701, which is rotatably connected to the inner wall of the frame 5. A first inner triangular square tube 702 is slidably connected to the upper end of the outer triangular square tube 701. A second inner triangular square tube 703 is slidably connected to the upper end of the first inner triangular square tube 702. A third inner triangular square tube 704 is slidably connected to the upper end of the second inner triangular square tube 703. A connecting turntable 705 is fixedly connected to the upper part of the center of one side wall of the third inner triangular square tube 704. The connecting turntable 705 is rotatably connected to the lower end surface of the dump truck body 2. During the dumping process, the dump truck body 2 pulls the two connecting turntables 705 upward, thereby pulling out the third inner triangular square tube 704, the second inner triangular square tube 703 and the first inner triangular square tube 702 in succession. While improving stability through the four connecting parts 3, the two support components 7 can also guide the rising and falling dump truck body 2, thereby improving the anti-tilting ability.

[0037] A rear-tipping hydraulic cylinder 6 is rotatably connected at the center of the chassis 5. The output end of the rear-tipping hydraulic cylinder 6 is rotatably connected at the center of the lower end face of the dump truck body 2. After the rear-tipping hydraulic cylinder 6 is started, it pushes the dump truck body 2 to move upward. Due to the connection of the four connecting parts 3, the dump truck body 2 rotates around the four connecting parts 3 as the axis, thereby realizing self-unloading.

[0038] The two support components 7 are symmetrically arranged with the dump truck body 2 as the axis. The two support components 7 support the dump truck body 2 in the same position to improve stability.

[0039] Working principle: When in use, by adding connector 3, multi-point support can be achieved between the dump truck body 2 and the frame 5, which can distribute the load and improve the overall stability. Multi-point support can reduce local stress concentration and reduce the risk of local damage to connector 3. Widening connector 3 can increase the contact area between dump truck body 2 and frame 5, increase the support base, and thus improve stability.

[0040] During the self-unloading process, after the control hydraulic cylinder 6 is activated, the hydraulic cylinder 6 pushes the self-unloading truck body 2 to move upward. Due to the connection of the four connecting parts 3, the self-unloading truck body 2 rotates around the four connecting parts 3 as the axis, thereby realizing self-unloading. During the self-unloading process, the self-unloading truck body 2 pulls the two connecting turntables 705 to move upward, thereby pulling out the third inner triangular square tube 704, the second inner triangular square tube 703 and the first inner triangular square tube 702 in succession. While improving stability through the four connecting parts 3, the two support components 7 can also guide the lifting self-unloading truck body 2, thereby improving the anti-tilting ability.

[0041] After unloading is completed, the hydraulic cylinder 6 is retracted to pull the dump truck body 2 downward. Then, the two first electromagnets 803 and two second electromagnets 807 are activated. The two first electromagnets 803 and two second electromagnets 807 repel each other, thereby generating a certain thrust when the two first buffer pads 804 and two second buffer pads 808 come into contact, preventing direct fall and causing a large noise and impact that could damage the dump truck body 2 and the frame 5. The two first buffer pads 804 and two second buffer pads 808 can further enhance this cushioning and improve the service life of the equipment. After falling, the power to the two first electromagnets 803 and two second electromagnets 807 is cut off.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anti-tipping, rear-dumping semi-trailer, comprising a cab (1), a frame (5), and a dump truck body (2), wherein the frame (5) is located at the rear end of the cab (1), and the dump truck body (2) is located at the upper end of the frame (5), characterized in that: The upper end face of the frame (5) is fixedly connected to a bracket (4), and four connectors (3) are arranged horizontally at the rear center of the upper end face of the bracket (4); The connector (3) includes a connecting seat (301), and a rotating seat (302) is rotatably connected inside the connecting seat (301). The rotating seat (302) passes through the inner wall of the connecting seat (301) and extends to the upper end of the connecting seat (301), and its end is fixedly connected to the lower end face of the dump truck body (2). A limiting rod (303) is provided on one side wall of the connecting seat (301). One end of the limiting rod (303) passes through one end face of the connecting seat (301), one end face of the rotating seat (302), and one inner side wall of the connecting seat (301) and extends to the other end of the connecting seat (301), and its end is provided with a pressure groove (304). The upper surface of the frame (5) is provided with buffer components (8) on both sides near the front.

2. The anti-tipping and tipping self-unloading semi-trailer according to claim 1, characterized in that: The buffer assembly (8) includes a base (801), a first groove (802) is provided at the center of the upper surface of the base (801), a first electromagnet (803) is provided inside the first groove (802), a top seat (805) is fixedly connected to the lower surface of the dump truck body (2) at the upper end of the base (801), a second groove (806) is provided at the center of the lower surface of the top seat (805), and a second electromagnet (807) is provided inside the second groove (806).

3. The anti-tilting and self-unloading semi-trailer according to claim 2, characterized in that: The first electromagnet (803) is fixedly connected to the upper end of the base (801) with a first buffer pad (804), and the second electromagnet (807) is provided with a second buffer pad (808) on the lower end surface of the top seat (805).

4. The anti-tipping and tipping self-unloading semi-trailer according to claim 1, characterized in that: The frame (5) has support components (7) on both sides of the center inside. The support components (7) include an outer triangular square tube (701), which is rotatably connected to the inner side wall of the frame (5). The upper end of the outer triangular square tube (701) is slidably connected to a first inner triangular square tube (702). The upper end of the first inner triangular square tube (702) is slidably connected to a second inner triangular square tube (703). The upper end of the second inner triangular square tube (703) is slidably connected to a third inner triangular square tube (704). A connecting turntable (705) is fixedly connected to the upper part of the center of one side wall of the third inner triangular square tube (704). The connecting turntable (705) is rotatably connected to the lower end surface of the dump truck body (2).

5. The anti-tipping and tipping self-unloading semi-trailer according to claim 1, characterized in that: The rear tilting hydraulic cylinder (6) is rotatably connected at the center of the interior of the frame (5), and the output end of the rear tilting hydraulic cylinder (6) is rotatably connected at the center of the lower end face of the dump truck body (2).

6. The anti-tipping and tipping self-unloading semi-trailer according to claim 4, characterized in that: The two support components (7) are arranged symmetrically about the dump truck body (2).

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