Trailer and trailer frame structure

Abstract

The utility model is applicable to the technical field of transportation vehicles, and provides a trailer and a trailer frame structure, the trailer frame structure comprises a frame and a device bin with an open outer side, the device bin is fixedly connected to two sides of the frame, and a supporting assembly is arranged in an inner cavity of the device bin. A plurality of second hydraulic oil cylinders evenly arranged in the length direction of the frame are hinged to the bottom of the device bin, a third hydraulic oil cylinder is hinged to the inner side of the bottom of the device bin, a connecting plate is hinged to the other end of the third hydraulic oil cylinder, and cylinder barrel parts of the second hydraulic oil cylinders are fixedly connected with the connecting plate. According to the trailer and the trailer frame structure, the supporting plates arranged in the inner cavities of the device bins on the two sides of the frame can be pulled out and adjusted to be in a horizontal state or an inclined state; the loading and unloading range can be enlarged in the horizontal state, some specific goods can slide off from the inclined face in the inclined state, the auxiliary effect on goods loading and unloading is achieved, and due to the fact that supporting structures are reinforced on the two sides of the vehicle frame, damage to the vehicle and personnel due to heavy goods is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of transportation vehicles, and in particular relates to a trailer and a trailer frame structure. Background Art

[0002] Trailers are categorized as full trailers and semitrailers. This utility model primarily describes a semitrailer and its frame structure. A semitrailer has its axle positioned behind the vehicle's center of gravity (when evenly loaded) and is equipped with a coupling device that transmits horizontal and vertical forces to the towing vehicle. It is a heavy-duty transport vehicle connected to the semitrailer's front end via a tow pin. The semitrailer frame is the primary component used to support the load and mount the tow pin, suspension, and support devices. It consists of a main beam, supporting crossbeams, connecting crossbeams, side beams, locking lugs, tow pin connections, and panels.

[0003] However, the existing semi-trailer frame structure is relatively simple, the loading and unloading range is small, and it is not convenient to load and unload goods. In addition, the overall frame is narrow, and the center of gravity of the two side edges lacks support, which may cause damage to the vehicle, goods and personnel during operation. Utility Model Content

[0004] The utility model provides a trailer frame structure, aiming to solve

[0005] The present utility model is implemented as follows: a trailer frame structure includes a frame and an externally open device compartment, the device compartment is fixedly connected to both sides of the frame, the inner cavity of the device compartment is provided with a support assembly, the bottom of the device compartment is hinged with a plurality of second hydraulic cylinders evenly arranged along the length direction of the frame, the inner side of the bottom of the device compartment is hinged with a third hydraulic cylinder, the other end of the third hydraulic cylinder is hinged with a connecting plate, and the cylinder barrel parts of the plurality of second hydraulic cylinders are respectively fixedly connected to the connecting plate.

[0006] Preferably, the support assembly includes a support plate, a sliding plate, and a first hydraulic cylinder. The sliding plate is slidably arranged in the inner cavity of the device bin, the support plate is rotatably connected to the outer side of the sliding plate, and the first hydraulic cylinder is hinged to the bottom of the support plate. When the support plate is pulled out to the outside of the device bin, it is supported by the first hydraulic cylinder to a horizontal state or an inclined state.

[0007] Preferably, pulleys are fixedly connected to the upper and lower ends of the sliding plate, and the upper and lower inner wall surfaces of the device compartment are provided with slide rails, and the pulleys move along the slide rails.

[0008] Preferably, the side wall of the device bin is provided with a positioning screw, the side wall of the support plate is provided with a first positioning hole, and the side wall of the sliding plate is provided with a second positioning hole. When the support plate is fully extended into the inner cavity of the device bin, the positioning screw is screwed into the first positioning hole to position the support plate; when the support plate is extended from the inner cavity of the device bin, the positioning screw is screwed into the second positioning hole on the side wall of the sliding plate to position the sliding plate.

[0009] Preferably, a limiting ring for limiting the position of the pulley is provided on the outer end of the inner wall of the device bin, and a pull ring for pulling the support plate is provided on one side of the support plate.

[0010] Preferably, a limiting block for limiting the rotation angle of the first hydraulic cylinder is fixedly connected to the bottom of the support plate.

[0011] A trailer comprises the above-mentioned trailer frame structure.

[0012] Beneficial effects

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: a trailer and trailer frame structure of the present invention can be pulled out and adjusted to a horizontal state or an inclined state through support plates arranged in the inner cavity of the device compartment on both sides of the frame; in the horizontal state, the range of loading and unloading can be increased, and in the inclined state, some specific goods can be made to slide down the inclined surface, which plays a certain auxiliary role in loading and unloading; and there is a lack of a reinforced support structure on both sides of the frame, which may cause certain damage to the vehicle or personnel when the cargo is heavy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a cross-sectional view of the device compartment in the utility model;

[0016] Figure 3 This is a schematic diagram of the support plate in the horizontal state in the present invention;

[0017] Figure 4 This is a schematic diagram of the support plate in the present invention in an inclined state.

[0018] In the figure: 1-frame, 2-device compartment, 3-support plate, 4-sliding plate, 5-slide rail, 6-pulley, 7-positioning screw, 8-connecting plate, 9-second hydraulic cylinder, 10-third hydraulic cylinder, 11-first hydraulic cylinder, 12-limit block, 13-limit ring, 14-pull ring. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] See also Figure 1-4 The utility model provides a technical solution: a trailer frame structure, including a frame 1 and an externally open device compartment 2, the device compartment 2 is fixedly connected to both sides of the frame 1, the inner cavity of the device compartment 2 is provided with a support assembly, the bottom of the device compartment 2 is hinged with a plurality of second hydraulic cylinders 9 evenly arranged along the length direction of the frame 1, the inner side of the bottom of the device compartment 2 is hinged with a third hydraulic cylinder 10, the other end of the third hydraulic cylinder 10 is hinged with a connecting plate 8, and the cylinder parts of the plurality of second hydraulic cylinders 9 are respectively fixedly connected to the connecting plate 8.

[0021] In this embodiment, there are at least two third hydraulic cylinders 10, which are respectively hinged to the two ends of the connecting plate 8. If the overall frame is longer, the number of third hydraulic cylinders 10 can be increased to support the connecting plate 8 and the second hydraulic cylinder 9.

[0022] When the third hydraulic cylinder 10 is extended, the connecting plate 8 can be driven to rotate, thereby driving all the second hydraulic cylinders 9 on the connecting plate 8 to rotate to a vertical state. Then, the second hydraulic cylinder 9 is extended until the base contacts and is fixed to the ground, so that the device compartment 2 on this side can be supported. The second hydraulic cylinder 9 is not bound to the device compartment 2 and is only used to provide a certain degree of support for the device compartment 2.

[0023] When loading and unloading is complete, the second hydraulic cylinder 9 is first shortened and separated from the ground. The third hydraulic cylinder 10 is then retracted, causing the connecting plate 8 to rotate. The rotation of the connecting plate 8 then causes all the second hydraulic cylinders 9 on the connecting plate 8 to rotate and retract. The power for both the second and third hydraulic cylinders 9, 10 is provided by the front section of the trailer.

[0024] Furthermore, the support assembly includes a support plate 3, a sliding plate 4, and a first hydraulic cylinder 11. The sliding plate 4 can be slidably arranged in the inner cavity of the device compartment 2. The support plate 3 is rotatably connected to the outer side of the sliding plate 4. The first hydraulic cylinder 11 is hinged to the bottom of the support plate 3. When the support plate 3 is pulled out to the outside of the device compartment 2, it is supported by the first hydraulic cylinder 11 to a horizontal state or an inclined state.

[0025] In this embodiment, the support plate 3, the sliding plate 4, and the first hydraulic cylinder 11 are all housed in the inner cavity of the device compartment 2 when the vehicle is traveling;

[0026] When assisting loading and unloading, the support plate can be pulled out to the outside of the device compartment 2, and then the first hydraulic cylinder 11 is rotated to a vertical state and extended so that its bottom is fixed to the ground;

[0027] If the support plate needs to be adjusted to an inclined position, the first hydraulic cylinder 11 is shortened first, the support plate 3 is rotated to contact the ground, and the first hydraulic cylinder 11 is extended so that its bottom is fixed to the ground. At this time, some specific goods can be slid off the inclined surface of the support plate 3 to assist in unloading.

[0028] Furthermore, pulleys 6 are fixedly connected to the upper and lower ends of the sliding plate 4 , and slide rails 5 are provided on the upper and lower inner wall surfaces of the device compartment 2 , and the pulleys 6 move along the slide rails 5 .

[0029] In this embodiment, the sliding plate 4 moves along the slide rail 5 , so that the support plate 3 rotatably connected to the sliding plate 4 can be drawn out of or put into the inner cavity of the device compartment 2 .

[0030] Furthermore, a positioning screw 7 is provided on the side wall of the device bin 2, a first positioning hole is provided on the side wall of the support plate 4, and a second positioning hole is provided on the side wall of the sliding plate 4. When the support plate 3 is fully extended into the inner cavity of the device bin 2, the positioning screw 7 is screwed into the first positioning hole to position the support plate 3; when the support plate 3 is extended from the inner cavity of the device bin 2, the positioning screw 7 is screwed into the second positioning hole on the side wall of the sliding plate 4 to position the sliding plate 4.

[0031] In this embodiment, the positioning screw 7 is screwed into the first positioning hole on the side wall of the support plate 3 to position the support plate 3 to prevent the support plate 3 from sliding out of the inner cavity of the device compartment 2 while the vehicle is driving;

[0032] When the support plate 3 is pulled out from the device compartment 2 for use, the positioning screw 7 is screwed into the second positioning hole on the side wall of the sliding block 4 that has just slid there, thereby fixing the sliding block 4 and the support plate 3 in use.

[0033] Furthermore, a limiting ring 13 for limiting the pulley 6 is provided on the outer end of the inner wall of the device chamber 2 , and a pull ring 14 for pulling the support plate 3 is provided on one side of the support plate 3 .

[0034] In this embodiment, when the pull ring 14 is pulled to drive the support plate 3 and the sliding block 4 to slide out of the device bin 2, the pulleys 6 at the upper and lower ends of the sliding plate move to the limit ring 13 and contact it. At this time, the pulley 6 cannot continue to move forward, preventing the sliding plate 4 from sliding out of the device bin 2 completely.

[0035] Furthermore, a limiting block 12 for limiting the rotation angle of the first hydraulic cylinder 11 is fixedly connected to the bottom of the support plate 3 .

[0036] In this embodiment, when the support plate 3 is set to an inclined state, the first hydraulic cylinder 11 will also tend to an inclined state. When the first hydraulic cylinder continues to rotate and contacts the limit block 12 to stop rotating, the first hydraulic cylinder 11 tends to be fixed, and then the base of the first hydraulic cylinder 11 is adjusted to be fixed to the ground.

[0037] The working principle and usage process of the present invention: After the present invention is installed, when loading, the staff first rotates the third hydraulic cylinder 10 to straighten the second hydraulic cylinder 9 and fix it to the ground, then loosens the positioning screw 7 and pulls the pull ring 14 to pull out the support plate 3, then straightens the first hydraulic cylinder 11 and fixes it to the ground, and finally tightens the positioning screw 7 into the second positioning hole on the side wall of the sliding plate 4 that just slides to this point; if specific goods need to be unloaded, the other end of the support plate 3 can be rotated to contact the ground, and then the base of the first hydraulic cylinder 11 is rotated to be fixed to the ground. At this time, the goods can be slid down and unloaded through the inclined surface of the support plate 3. When the loading and unloading work is completed, the first hydraulic cylinder is rotated to be parallel to the support plate 3, the positioning screw 7 is loosened and the support plate 3 is pushed into the inner cavity of the device bin 2, and finally the positioning screw is tightened to the first positioning hole on the side wall of the support plate 3.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A trailer frame structure, characterized by: The invention comprises a vehicle frame (1) and a device compartment (2) with an open outer side, wherein the device compartment (2) is fixedly connected to both sides of the vehicle frame (1), the inner cavity of the device compartment (2) is provided with a support assembly, the bottom of the device compartment (2) is hinged with a plurality of second hydraulic cylinders (9) evenly arranged along the length direction of the vehicle frame (1), the inner side of the bottom of the device compartment (2) is hinged with a third hydraulic cylinder (10), the other end of the third hydraulic cylinder (10) is hinged with a connecting plate (8), and the cylinder barrels of the plurality of second hydraulic cylinders (9) are respectively fixedly connected to the connecting plate (8).

2. The trailer frame structure according to claim 1, characterized in that: The support assembly includes a support plate (3), a sliding plate (4), and a first hydraulic cylinder (11). The sliding plate (4) is slidably arranged in the inner cavity of the device bin (2). The support plate (3) is rotatably connected to the outer side of the sliding plate (4). The first hydraulic cylinder (11) is hinged to the bottom of the support plate (3). When the support plate (3) is pulled out to the outside of the device bin (2), it is supported by the first hydraulic cylinder (11) to a horizontal state or an inclined state.

3. The trailer frame structure according to claim 2, characterized in that: The upper and lower ends of the sliding plate (4) are fixedly connected with pulleys (6), and the upper and lower inner wall surfaces of the device bin (2) are provided with slide rails (5), and the pulleys (6) move along the slide rails (5).

4. The trailer frame structure according to claim 2, wherein: The side wall of the device bin (2) is provided with a positioning screw (7), the side wall of the support plate (3) is provided with a first positioning hole, and the side wall of the sliding plate (4) is provided with a second positioning hole. When the support plate (3) is fully extended into the inner cavity of the device bin (2), the positioning screw (7) is screwed into the first positioning hole to position the support plate (3); when the support plate (3) is extended from the inner cavity of the device bin (2), the positioning screw (7) is screwed into the second positioning hole on the side wall of the sliding plate (4) to position the sliding plate (4).

5. The trailer frame structure according to claim 4, characterized in that: A limiting ring (13) for limiting the position of the pulley (6) is provided at the outer end of the inner wall surface of the device bin (2), and a pull ring (14) for pulling the support plate (3) is provided on one side edge of the support plate (3).

6. The trailer frame structure according to claim 2, characterized in that: A limiting block (12) for limiting the rotation angle of the first hydraulic cylinder (11) is fixedly connected to the bottom of the support plate (3).

7. A trailer, characterized by: The invention comprises a trailer frame structure according to any one of claims 1 to 6.

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