Semitrailer frame structure convenient to disassemble and assemble

Abstract

The utility model relates to the technical field of semitrailer frames, and discloses a semitrailer frame structure convenient to disassemble and assemble, which comprises an underframe and a carriage body, cross beams are fixedly connected to two sides of the underframe in an axial symmetry manner, and rotating holes are formed in two ends of each cross beam in an axial symmetry manner. According to the semitrailer frame structure convenient to disassemble and assemble, through the arrangement of the supporting assembly, when the carriage body is located at the top of the bottom frame, a threaded cylinder can be rotated according to the distance between the bottom of the carriage body and the bottom frame and the flatness of the bottom of the carriage body, so that the threaded cylinder rotates to drive a threaded rod to move upwards; the supporting assemblies are integrally distributed on the top of the bottom frame in a rectangular array mode, one of the supporting assemblies can be finely adjusted according to the distance between the bottom of the compartment body and the bottom frame and the flatness of the bottom of the compartment body, and therefore the bearing capacity and stability of the compartment body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of semitrailer frames, in particular to a semitrailer frame structure which is convenient for disassembly and assembly. Background Art

[0002] A semi-trailer is a trailer with the axle placed behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and equipped with a coupling device that can transmit horizontal and vertical forces to the tractor. Semi-trailers are generally three-axle semi-trailers, which are divided into many types such as 11-meter warehouse semi-trailers, 13-meter warehouse semi-trailers, low-bed semi-trailers, etc. It is a heavy-duty transportation vehicle connected to the semi-trailer head through a traction pin.

[0003] A semi-trailer frame structure disclosed in publication number CN206485399U has a simple and reasonable structure, avoids the problem of excessive local pressure on the filling body, improves the impact resistance of the filling body, and further improves the stability of the placement of the filling body.

[0004] However, this semi-trailer frame structure has the following disadvantages:

[0005] (1) Semi-trailers require carriages according to different loading requirements, but it is difficult to remove the carriages from the semi-trailers, and they cannot be adjusted and fixed according to the width of the carriages, which reduces the stability of the carriages;

[0006] (2) The connection between the top of the semi-trailer frame and the carriage lacks a supporting structure, which reduces the load-bearing capacity of the carriage. Utility Model Content

[0007] 1. Technical issues to be solved

[0008] The technical problem solved by the utility model is to provide a semi-trailer frame structure that is highly practical and can be easily disassembled and assembled through simple operations and has a relatively simple structure. It solves the problem raised in the above-mentioned background technology that a carriage is needed, but it is difficult to disassemble the carriage from the semi-trailer, and it cannot be adjusted and fixed according to the width of the carriage, and there is a lack of a supporting structure at the connection between the top of the semi-trailer frame and the carriage.

[0009] (II) Technical solution

[0010] To achieve the above purpose, the utility model is implemented through the following technical solutions: a semi-trailer frame structure that is easy to disassemble and assemble, including a chassis and a car body, the two sides of the chassis are axially symmetrically fixedly connected with cross beams, the two ends of the cross beams are axially symmetrically provided with rotating holes, the interior of the rotating holes is rotatably connected with a positioning component for adjusting and fixing according to the width of the car body, and the top of the chassis is provided with a plurality of support components for supporting the car body in a rectangular array.

[0011] Optionally, the positioning assembly includes a forward and reverse threaded rod rotatably connected to the inside of the rotating hole, a first L-plate is provided on one side of the surface of the forward and reverse threaded rod, a second L-plate is provided on the other side of the surface of the forward and reverse threaded rod, and a swivel is provided at one end of the forward and reverse threaded rod for driving its forward and reverse rotation.

[0012] Optionally, the first L-plate and the second L-plate are both located on the inner side of the crossbeam, and the first L-plate and the second L-plate are symmetrically distributed with respect to each other.

[0013] Optionally, a threaded hole is formed at one end of the first L-plate and the second L-plate, and a sliding hole is formed at one side of the threaded hole.

[0014] Optionally, the sliding hole is internally slidably connected to a limit rod, and one end of the limit rod is fixedly connected to the side surface of the beam.

[0015] Optionally, the support assembly includes a base plate arranged in a rectangular array on the top of the base frame, the top of the base plate is rotatably connected to a threaded barrel, the internal thread of the threaded barrel is connected to a threaded rod, and the top end of the threaded rod is fixedly connected to a top plate.

[0016] Optionally, a through groove is opened inside the crossbeam, and the through groove is rectangular.

[0017] (III) Beneficial effects

[0018] The utility model provides a semi-trailer frame structure that is easy to disassemble and assemble, and has the following beneficial effects:

[0019] 1. The semi-trailer frame structure that is easy to disassemble and assemble has a positioning component. The carriage body serves as a cargo carrier of the semi-trailer. When the carriage body is located on the top of the bottom frame, people can rotate the swivel to make the swivel drive the positive and negative threaded rods to rotate, thereby driving the first L-plate and the second L-plate to move in relative directions and approach the two sides of the carriage body until they are in contact with the sides of the carriage body, thereby fixing the carriage body. When it is necessary to disassemble the carriage body, it is only necessary to rotate the positive and negative threaded rods to move the first L-plate and the second L-plate apart to release the fixation of the carriage body. Subsequently, the carriage body can be removed from the top of the bottom frame, thereby improving the stability of the semi-trailer frame and facilitating the disassembly and assembly of the carriage body.

[0020] 2. The semi-trailer frame structure that is easy to disassemble and assemble has a supporting assembly. When the car body is located on the top of the chassis, the threaded cylinder can be rotated according to the distance between the bottom of the car body and the chassis and the flatness of the bottom of the car body. The rotation of the threaded cylinder drives the threaded rod to move upward, thereby making the top plate fit the bottom of the car body. The supporting assemblies are distributed on the top of the chassis in a rectangular array as a whole. One of the supporting assemblies can be fine-tuned according to the distance between the bottom of the car body and the chassis and the flatness of the bottom of the car body, thereby improving the load-bearing capacity and stability of the car body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the carriage body of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the support assembly of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the positioning component of the utility model.

[0025] In the figure: 1. chassis; 2. car body; 3. crossbeam; 4. positioning assembly; 41. positive and negative threaded rods; 42. first L plate; 43. second L plate; 44. swivel; 5. support assembly; 51. bottom plate; 52. threaded cylinder; 53. threaded rod; 54. top plate; 6. threaded hole; 7. sliding hole; 8. limit rod; 9. through groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figures 1 to 4 The utility model provides a technical solution: a semi-trailer frame structure that is easy to disassemble and assemble, including a base frame 1 and a car body 2, two sides of the base frame 1 are axially symmetrically fixedly connected with cross beams 3, both ends of the cross beam 3 are axially symmetrically provided with rotation holes, the interior of the rotation hole is rotatably connected with a positioning component 4 for adjusting and fixing according to the width of the car body 2, and the top of the base frame 1 is provided with a plurality of support components 5 for supporting the car body 2 in a rectangular array.

[0028] See also Figure 2A through groove 9 is provided inside the cross beam 3, and the through groove 9 is rectangular. The setting of the through groove 9 makes the cross beam 3 hollow, thereby reducing the weight of the entire semi-trailer frame.

[0029] Embodiment 1:

[0030] See also Figure 3 The support assembly 5 includes a bottom plate 51 arranged at the top of the base frame 1 in a rectangular array, the top of the bottom plate 51 is rotatably connected to a threaded cylinder 52, the internal thread of the threaded cylinder 52 is connected to a threaded rod 53, and the top of the threaded rod 53 is fixedly connected to a top plate 54. When the car body 2 is located on the top of the base frame 1, the threaded cylinder 52 can be rotated according to the distance between the bottom of the car body 2 and the base frame 1 and the flatness of the bottom of the car body 2, so that the rotation of the threaded cylinder 52 drives the threaded rod 53 to move upward, thereby making the top plate 54 fit with the bottom of the car body 2, and the support assemblies 5 are distributed on the top of the base frame 1 in a rectangular array as a whole. According to the distance between the bottom of the car body 2 and the base frame 1 and the flatness of the bottom of the car body 2, one of the support assemblies 5 can be fine-tuned, thereby improving the bearing capacity and stability of the car body 2.

[0031] Embodiment 2:

[0032] See also Figure 4 The positioning assembly 4 includes a forward and reverse threaded rod 41 rotatably connected to the inside of the rotating hole, a first L-plate 42 is provided on one side of the surface of the forward and reverse threaded rod 41, and a second L-plate 43 is provided on the other side of the surface of the forward and reverse threaded rod 41. A swivel 44 for driving the forward and reverse rotation is provided at one end of the forward and reverse threaded rod 41. The first L-plate 42 and the second L-plate 43 are both located on the inner side of the cross beam 3, and the first L-plate 42 and the second L-plate 43 are symmetrically distributed with each other. A threaded hole 6 is provided at one end of the first L-plate 42 and the second L-plate 43, and a sliding hole 7 is provided on one side of the threaded hole 6. The sliding hole 7 is internally slidably connected to a limit rod 8, and one end of the limit rod 8 is fixedly connected to the side of the cross beam 3. The carriage body As a cargo carrier of the semi-trailer, when the carriage body 2 is located on the top of the bottom frame 1, people can rotate the swivel 44, so that the swivel 44 drives the positive and negative threaded rod 41 to rotate, thereby driving the first L plate 42 and the second L plate 43 to move in opposite directions and approach the two sides of the carriage body 2 until they fit with the side of the carriage body 2, thereby fixing the carriage body 2. When it is necessary to remove the carriage body 2, it is only necessary to rotate the positive and negative threaded rod 41 to move the first L plate 42 and the second L plate 43 away to release the fixation of the carriage body 2. Subsequently, the carriage body 2 can be removed from the top of the bottom frame 1, thereby improving the stability of the semi-trailer frame and facilitating the disassembly and assembly of the carriage body 2.

[0033] In the utility model, the working steps of the device are as follows:

[0034] Step 1: The carriage body 2 is used as a cargo carrier of the semi-trailer. When the carriage body 2 is located on the top of the chassis 1, people can rotate the swivel 44 to make the swivel 44 drive the positive and negative threaded rod 41 to rotate, thereby driving the first L-plate 42 and the second L-plate 43 to move in opposite directions and approach the two sides of the carriage body 2 until they fit the side of the carriage body 2, thereby fixing the carriage body 2. When it is necessary to remove the carriage body 2, it is only necessary to rotate the positive and negative threaded rod 41 to move the first L-plate 42 and the second L-plate 43 away to release the fixation of the carriage body 2, and then the carriage body 2 can be removed from the top of the chassis 1;

[0035] The second step: when the car body 2 is located on the top of the base frame 1, the threaded cylinder 52 can be rotated according to the distance between the bottom of the car body 2 and the base frame 1 and the flatness of the bottom of the car body 2, so that the rotation of the threaded cylinder 52 drives the threaded rod 53 to move upward, thereby making the top plate 54 fit with the bottom of the car body 2, and the supporting components 5 are distributed in a rectangular array on the top of the base frame 1 as a whole. According to the distance between the bottom of the car body 2 and the base frame 1 and the flatness of the bottom of the car body 2, one of the supporting components 5 can be fine-tuned.

[0036] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0037] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A semi-trailer frame structure that is easy to disassemble and assemble, comprising a chassis (1) and a vehicle body (2), characterized in that: The two sides of the base frame (1) are fixedly connected with cross beams (3) in an axisymmetric manner, and the two ends of the cross beam (3) are provided with rotation holes in an axisymmetric manner. The interior of the rotation hole is rotationally connected with a positioning component (4) for adjusting and fixing according to the width of the carriage body (2). The top of the base frame (1) is provided with a plurality of support components (5) for supporting the carriage body (2) in a rectangular array.

2. The semi-trailer frame structure that is easy to disassemble and assemble according to claim 1 is characterized in that: The positioning assembly (4) comprises a forward and reverse threaded rod (41) rotatably connected to the inside of the rotating hole, a first L-plate (42) is provided on one side of the surface of the forward and reverse threaded rod (41), a second L-plate (43) is provided on the other side of the surface of the forward and reverse threaded rod (41), and a rotating ring (44) for driving the forward and reverse threaded rod (41) to rotate forward and reverse is provided at one end.

3. The semi-trailer frame structure that is easy to disassemble and assemble according to claim 2 is characterized in that: The first L-plate (42) and the second L-plate (43) are both located on the inner side of the crossbeam (3), and the first L-plate (42) and the second L-plate (43) are symmetrically distributed with respect to each other.

4. The semi-trailer frame structure that is easy to disassemble and assemble according to claim 2, characterized in that: A threaded hole (6) is provided at one end of the first L-plate (42) and the second L-plate (43), and a sliding hole (7) is provided on one side of the threaded hole (6).

5. The semi-trailer frame structure that is easy to disassemble and assemble according to claim 4 is characterized in that: The interior of the sliding hole (7) is slidably connected to a limiting rod (8), and one end of the limiting rod (8) is fixedly connected to the side surface of the crossbeam (3).

6. The semi-trailer frame structure that is easy to disassemble and assemble according to claim 1, characterized in that: The support assembly (5) comprises a bottom plate (51) arranged in a rectangular array at the top of the bottom frame (1); the top of the bottom plate (51) is rotatably connected to a threaded cylinder (52); the internal thread of the threaded cylinder (52) is connected to a threaded rod (53); the top of the threaded rod (53) is fixedly connected to a top plate (54).

7. The semi-trailer frame structure that is easy to disassemble and assemble according to claim 1 is characterized in that: A through slot (9) is provided inside the cross beam (3), and the through slot (9) is rectangular.

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