A van-type self-unloading semi-trailer

Abstract

The utility model discloses a compartment type self -discharging semitrailer belongs to vehicle production technical field. Including semitrailer and compartment, be connected and be installed with fixed undercarriage on semitrailer, and the hinged side of fixed undercarriage is hinged and installed with turnover frame, and the hinged side of turnover frame away from fixed undercarriage is hinged and installed with compartment, and the both sides of compartment are hinged and installed with compartment door, and a plurality of first telescopic links are rotatably connected and installed on fixed undercarriage, and the extension end of first telescopic link is rotatably connected with turnover frame, and a plurality of second telescopic links are rotatably connected and installed on turnover frame, and the extension end of second telescopic link is rotatably connected with the bottom of one side of compartment, and the both sides of compartment are rotatably connected and installed with third telescopic link, and third telescopic link extension end is rotatably connected and installed with compartment door. The device is driven turnover frame or compartment to rotate around the hinge through the first telescopic link or second telescopic link elongation, and the flexibility and adaptability of unloading are improved, which is favorable to improve the efficiency of loading, transportation and unloading.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle manufacturing technology, specifically a box-type self-dumping semi-trailer. Background Technology

[0002] A semi-trailer is a trailer whose axle is located behind the vehicle's center of gravity (when the vehicle is evenly loaded) and is equipped with a coupling device that transmits horizontal and vertical forces to the tractor. Semi-trailers are generally three-axle semi-trailers, and they come in many types, such as 11-meter stake semi-trailers, 13-meter stake semi-trailers, and low-flatbed semi-trailers. They are heavy-duty transport vehicles connected to the semi-trailer cab by a towing pin.

[0003] Typical dump trucks mainly consist of a rear articulated cargo box and a hydraulic jack at the front. The hydraulic jack lifts the front of the cargo box, causing the cargo to tip backward and thus unload itself.

[0004] However, for trailers with long cargo boxes, the hydraulic jacks need to be long enough to guarantee sufficient strength due to the large lifting height required. Therefore, it is not possible to unload cargo by lifting from the front and hinged at the rear. In addition, when facing narrow passages, dead ends, or crowded cargo yards, traditional unloading methods require a lot of time to turn around and align with the unloading point, which greatly reduces unloading efficiency. Utility Model Content

[0005] To address the problem that existing box semi-trailers can only unload from one side at the rear, making it impossible to unload properly in narrow unloading areas, requiring a lot of time to adjust, demanding high driving skills, and resulting in low unloading efficiency, this utility model provides a box self-dumping semi-trailer.

[0006] This utility model is achieved through the following technical solution: A box-type self-dumping semi-trailer includes a semi-trailer and a box body. A fixed base frame is connected and installed on the semi-trailer. A tipping frame is hinged to the side of the fixed base frame. The side of the tipping frame away from the hinged side of the fixed base frame is hinged to the bottom of one side of the box body. Box doors are hinged to the upper parts of both sides of the box body. Several first telescopic rods are rotatably connected to the fixed base frame. The extended ends of the first telescopic rods are rotatably connected to the tilting frame. Several second telescopic rods are rotatably connected to the tilting frame. The extended ends of the second telescopic rods are rotatably connected to the bottom of one side of the compartment. Third telescopic rods are rotatably connected to both sides of the compartment. The extended ends of the third telescopic rods are rotatably connected to the compartment door.

[0007] A further improvement of this utility model is that several telescopic booms are slidably connected and installed on both sides of the semi-trailer, and a fourth telescopic rod that extends downwards is connected and installed on the booms, with a base connected and installed at the telescopic end of the fourth telescopic rod.

[0008] A further improvement of this utility model is that several locking mechanisms are connected and installed on both sides of the flipping frame. The locking mechanism includes a support frame and a stop block. The upper side of the support frame is provided with a groove, and the lower side is provided with a round rod. The lower side of the stop block is provided with an elongated hole that is rotatably connected to the round rod, and the upper side of the stop block is provided with a protrusion that can fit into the groove.

[0009] A further improvement of this utility model is that the first telescopic rod, the second telescopic rod, the third telescopic rod, and the fourth telescopic rod are all hydraulic telescopic rods.

[0010] A further improvement of this utility model is that a refrigeration device is connected and installed on the upper side of the compartment.

[0011] A further improvement of this utility model is that the fixed base frame, the tilting frame and the side of the box are respectively connected and installed with pin seats, a pin is slidably inserted into the pin seat, and a lock that can fix and constrain the pin seat is connected to the end of the pin.

[0012] A further improvement of this utility model is that hydraulic control devices are provided on both sides of the semi-trailer.

[0013] As can be seen from the above technical solutions, the beneficial effects of this utility model are: In use, the third telescopic rod is extended to open the cargo door, allowing workers to move goods into the cargo compartment. To ensure the compartment is fully loaded, the first or second telescopic rod is extended to tilt the compartment away from the open door, facilitating loading. Once full, the third telescopic rod is retracted to close the door. Then, the first or second telescopic rod is retracted to return the compartment to a horizontal position. The trailer is then started to transport the goods to the destination. Upon arrival, the trailer is driven directly to the unloading area without needing to turn around. Depending on the actual needs, the left or right door can be opened by extending the third telescopic rod. Simultaneously, the first or second telescopic rod is extended to tilt the compartment closer to the open door, allowing the goods to be unloaded at the unloading area. Then, the first or second telescopic rod is retracted to return the compartment to a horizontal position, and the door is closed by retracting the third telescopic rod. This invention uses the extension of the first or second telescopic rod to drive the tipping frame or the box body to rotate around the hinge, so that the box body can be in an unloading state tilted to the left or right. The appropriate unloading state can be found without the need for the semi-trailer to turn around and adjust. Furthermore, the reverse tilt during loading can ensure that the cargo fills the box body, which greatly improves the flexibility and adaptability of unloading and is conducive to improving the efficiency of loading, transportation and unloading. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the body structure of this utility model.

[0017] Figure 3 for Figure 1 Enlarged schematic diagram of a portion of the locking mechanism.

[0018] Figure 4 for Figure 1 A magnified schematic diagram of the structure at point B in the middle.

[0019] Figure 5 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0020] In the attached diagram: 1. Semi-trailer; 2. Body; 3. Fixed base frame; 4. Tilting frame; 5. Door; 6. First telescopic rod; 7. Second telescopic rod; 8. Third telescopic rod; 9. Outrigger; 10. Fourth telescopic rod; 11. Base; 12. Locking mechanism; 121. Support frame; 122. Stop block; 123. Groove; 124. Round rod; 125. Oblong hole; 126. Protrusion; 13. Refrigeration equipment; 14. Pin seat; 15. Bolt; 16. Lock; 17. Hydraulic control device. Detailed Implementation

[0021] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0022] like Figure 1-5 As shown, a box-type dump semi-trailer includes a semi-trailer 1 and a box body 2. A steel fixed base frame 3 is connected and installed on the semi-trailer 1. A tipping frame 4 is hinged to the side of the fixed base frame 3 by a pin sleeve. The tipping frame 4 is hinged to the box body 2 on the side away from the hinged side of the fixed base frame 3. Box doors 5 are hinged to the upper part of both sides of the box body 2. There is a sealing gasket between the box door 5 and the box body 2 to prevent water from getting in. Several first telescopic rods 6 are rotatably connected to the fixed base frame 3. The extended ends of the first telescopic rods 6 are rotatably connected to the tilting frame 4. Several second telescopic rods 7 are rotatably connected to the tilting frame 4. The extended ends of the second telescopic rods 7 are rotatably connected to the bottom of one side of the compartment 2. Third telescopic rods 8 are rotatably connected to both sides of the compartment 2. The extended ends of the third telescopic rods 8 are rotatably connected to the compartment door 5.

[0023] It should be noted that when installing the first telescopic rod 6 and the second telescopic rod 7, in order to ensure sufficient starting torque, the initial installation angle and the maximum lifting angle need to be guaranteed. The initial installation angle is 20° and the maximum lifting angle is 80°. Therefore, the hydraulic seats of the first telescopic rod 6 and the second telescopic rod 7 need to be in a low position so that the telescopic rods still have sufficient initial angle after retraction, ensuring sufficient starting torque.

[0024] In use, the third telescopic rod 8 is extended to open the door 5, allowing workers to move goods into the compartment 2. To ensure the compartment 2 is fully loaded, the first telescopic rod 6 or the second telescopic rod 7 is extended to tilt the compartment 2 away from the open door 5, facilitating loading. Once full, the third telescopic rod 8 is retracted to close the door 5. Then, the first telescopic rod 6 or the second telescopic rod 7 is retracted to restore the compartment 2 to a horizontal position. The semi-trailer 1 is then started to deliver the goods to the destination. Upon arrival, the semi-trailer 1 proceeds directly to the unloading area without needing to turn around. Depending on the actual needs of the site, the third telescopic rod 8 on the unloading side is extended to open the left or right door 5. Simultaneously, the first telescopic rod 6 or the second telescopic rod 7 is extended to tilt the compartment 2 towards the open door 5, allowing the goods to be unloaded at the unloading area. Then, the first telescopic rod 6 or the second telescopic rod 7 is retracted to restore the compartment 2 to a horizontal position, and the third telescopic rod 8 is retracted to close the door 5. This utility model uses the extension of the first telescopic rod 6 or the second telescopic rod 7 to drive the tilting frame 4 or the box 2 to rotate around the hinge, so that the box 2 can be in an unloading state tilted to the left or right. The semi-trailer 1 does not need to turn around to find a suitable unloading state. Moreover, the reverse tilt during loading can ensure that the cargo fills the box, which greatly improves the flexibility and adaptability of unloading and is conducive to improving the efficiency of loading, transportation and unloading.

[0025] The semi-trailer 1 is equipped with outrigger sleeves mounted on the crossbeams on the front, rear, left, and right sides. These outrigger sleeves extend through the main beams, and extendable outriggers 9 are slidably connected within them. A fourth telescopic rod 10, extending downwards, is connected to the outrigger 9, and a base 11 is connected to the telescopic end of the fourth telescopic rod 10. Before unloading, the outriggers 9 are removed from the semi-trailer 1. To prevent the risk of crushing the ground, wooden blocks can be placed under the base 11. The fourth telescopic rod 10 is then extended to slightly lift the trailer, increasing and lowering the vehicle's center of gravity. This provides sufficient anti-overturning capability for the semi-trailer 1, preventing the cargo box 2 from tilting and causing imbalance during unloading, thus improving the trailer's stability.

[0026] The tilting frame 4 is equipped with several locking mechanisms 12 on both sides. Each locking mechanism 12 includes a support frame 121 and a stop block 122. The support frame 121 has a groove 123 on its upper side and a round rod 124 on its lower side. The stop block 122 has an elongated hole 125 on its lower side that is rotatably connected to the round rod 124. The stop block 122 has a protrusion 126 on its upper side that can fit into the groove 123. After the door 5 is closed, to prevent the third telescopic rod 8 from bearing too much pressure during transportation, the stop block 122 is flipped up around the round rod 124, and then the protrusion 126 is inserted into the groove 123 to hold the door 5 in place, reducing the pressure on the third telescopic rod 8 and improving its lifespan. At the same time, it prevents the risk of goods spilling when the door 5 is opened during transportation.

[0027] Among them, the first telescopic rod 6, the second telescopic rod 7, the third telescopic rod 8, and the fourth telescopic rod 10 are all hydraulic telescopic rods. Hydraulic telescopic rods provide controllable, smooth, and self-locking linear motion, and can effectively support heavy objects, with good reliability and a long service life.

[0028] The upper side of the box body 2 is equipped with a refrigeration unit 13, and the box body 2 is insulated with insulation panels. The refrigeration unit 13 uses a compressor for refrigeration and is powered by electricity generated by the engine of the semi-trailer 1. It can transport goods that require cold chain transportation, increasing the transport applicability of the box semi-trailer and expanding the application range and use value of the vehicle.

[0029] The fixed base frame 3, the tipping frame 4, and the side of the box body 2 are respectively connected and installed with pin seats 14. A pin 15 is slidably inserted into the pin seat 14, and a lock 16 is connected to the end of the pin 15 to fix and constrain the pin seat 14. After loading is completed, when the tipping frame 4 or the box body 2 returns to its position, the pin 15 needs to be inserted into the pin seat 14 and fixed with the lock 16, so that the fixed base frame 3, the tipping frame 4, and the box body 2 are connected as one unit. This prevents the box body 2 from swaying left and right when the semi-trailer 1 is traveling on bumpy roads, so as to prevent the first telescopic rod 6 and the second telescopic rod 7 from being subjected to greater forces, thereby improving the service life of the telescopic rods.

[0030] Hydraulic control devices 17 are installed on both sides of the semi-trailer 1. The hydraulic control devices 17 use multi-way directional valves, overflow valves and throttle valves connected to the hydraulic pump to control the lifting speed and ensure stable lifting. The fact that hydraulic control devices 17 are installed on both sides of the semi-trailer 1 allows for better observation of the tilt of the body 2 and prevents danger.

[0031] In use, the staff loads the goods into the box 2, the driver drives the semi-trailer 1 to the destination, the accompanying operator opens the lock 16, removes the pin 15, and then lifts and flips the stop 122 on the locking mechanism 12 so that the stop 122 no longer restricts the box door 5. Then, they go to the side where the goods need to be unloaded, and control the extension of the third telescopic rod 8 by operating the control lever of the hydraulic control device 17 on the corresponding side, so that the box door 5 on the unloading side is opened. Then, the first telescopic rod 6 or the second telescopic rod 7 is activated to make the tilting frame 4 or the box 2 rotate along the hinge axis towards the unloading area, so that the box 2 tilts and dumps the goods into the unloading area. This box-type self-dumping semi-trailer extends the first telescopic rod 6 or the second telescopic rod 7 to drive the tipping frame 4 or the box body 2 to rotate around the hinge, so that the box body 2 can be in an unloading state tilted to the left or right. The semi-trailer 1 does not need to turn around to find a suitable unloading state. Furthermore, the reverse tilt during loading can ensure that the cargo fills the box body, which greatly improves the flexibility and adaptability of unloading and helps to improve the efficiency of loading, transportation and unloading.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A box-type dump semi-trailer, comprising a semi-trailer (1) and a box body (2), characterized in that, A fixed base frame (3) is connected and installed on the semi-trailer (1). A tipping frame (4) is hinged to the side of the fixed base frame (3). The side of the tipping frame (4) away from the hinged side of the fixed base frame (3) is hinged to the bottom of one side of the box body (2). Box doors (5) are hinged to the upper part of both sides of the box body (2). A number of first telescopic rods (6) are rotatably connected to the fixed base frame (3). The extended ends of the first telescopic rods (6) are rotatably connected to the tilting frame (4). A number of second telescopic rods (7) are rotatably connected to the tilting frame (4). The extended ends of the second telescopic rods (7) are rotatably connected to the bottom of the other side of the compartment (2). Third telescopic rods (8) are rotatably connected to both sides of the compartment (2). The extended ends of the third telescopic rods (8) are rotatably connected to the compartment door (5).

2. The box-type self-dumping semi-trailer according to claim 1, characterized in that, The semi-trailer (1) has several telescopic booms (9) slidably connected to both sides. A fourth telescopic rod (10) that extends downward is connected to the boom (9). A base (11) is connected to the telescopic end of the fourth telescopic rod (10).

3. The box-type self-dumping semi-trailer according to claim 2, characterized in that, Several locking mechanisms (12) are connected and installed on both sides of the flipping frame (4). The locking mechanism (12) includes a support frame (121) and a stop block (122). The support frame (121) has a groove (123) on its upper side and a round rod (124) on its lower side. The stop block (122) has an elongated hole (125) on its lower side that is rotatably connected to the round rod (124). The stop block (122) has a protrusion (126) on its upper side that can fit into the groove (123).

4. The box-type self-dumping semi-trailer according to claim 3, characterized in that, The first telescopic rod (6), the second telescopic rod (7), the third telescopic rod (8), and the fourth telescopic rod (10) are all hydraulic telescopic rods.

5. The box-type self-dumping semi-trailer according to claim 1 or 4, characterized in that, A refrigeration device (13) is connected and installed on the upper side of the compartment (2).

6. The box-type self-dumping semi-trailer according to claim 5, characterized in that, Pin seats (14) are connected and installed on the sides of the fixed base frame (3), the tilting frame (4) and the box body (2). A pin (15) is slidably inserted into the pin seat (14). A lock (16) that can fix and constrain the pin seat (14) is connected and installed at the end of the pin (15).

7. The box-type self-dumping semi-trailer according to claim 6, characterized in that, The semi-trailer (1) is equipped with hydraulic control devices (17) on both sides.

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