Side protection device for semitrailer

Abstract

The utility model relates to the technical field of protective devices, and discloses a side protective device for a semitrailer, which comprises a frame, a connecting frame is fixedly connected to the middle of the front side of the frame, a first bevel gear is rotatably connected to the bottom of the inner side of the connecting frame, and second bevel gears are rotatably connected to the left side and the right side of the inner wall of the connecting frame. The outer side of the second bevel gear is fixedly connected with a threaded rod, the outer side of the threaded rod is in threaded connection with a threaded block, the top of the threaded block is fixedly connected with a second U-shaped block, and the middle of the top end of the connecting frame is fixedly connected with a spring telescopic rod. According to the multifunctional automobile seat, the threaded rod, the spring telescopic rod and the U-shaped plate are matched, the length and the height of the device can be adjusted so as to adapt to different automobile types and use environments, and a plurality of devices can be combined through the cooperation of the bidirectional spring telescopic rod, the mounting hole and the mounting block.

Description

Technical Field

[0001] The utility model relates to the technical field of protective devices, in particular to a side protective device for a semitrailer. Background Art

[0002] A semitrailer refers to a vehicle or trailer connected to the rear of a tractor. It is connected to the tractor by a hinge, making the vehicle more flexible and maneuverable during transportation. In order to protect the side of the semitrailer, a side protection device for the semitrailer is required.

[0003] The side protection device of a semi-trailer refers to a side guardrail or side guard plate, which is installed on the side of the semi-trailer and is designed to provide additional safety protection to prevent other vehicles or pedestrians from accidentally contacting the side structure of the semi-trailer in the event of a traffic accident or emergency.

[0004] The side protection devices of semi-trailers currently on the market improve the protection of the semi-trailer body through their own structural strength. However, in actual use, it is not convenient to adjust its length and height according to different vehicle models, resulting in part of the cargo and the body still being exposed during use, thereby reducing the reliability of the device. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a side protection device for a semi-trailer, aiming to improve the problem in the prior art that the protection device cannot be adjusted according to different vehicle models.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a side protection device for a semi-trailer, comprising a frame, a connecting frame is fixedly connected to the middle part of the front side of the frame, a first bevel gear is rotatably connected to the inner bottom of the connecting frame, a second bevel gear is rotatably connected to the left and right sides of the inner wall of the connecting frame, the first bevel gear is meshed with the second bevel gear, a threaded rod is fixedly connected to the outer side of the second bevel gear, a threaded block is threadedly connected to the outer side of the threaded rod, a second U-shaped block is fixedly connected to the top of the threaded block, a spring telescopic rod is fixedly connected to the middle part of the top end of the connecting frame, and the other end of the spring telescopic rod is fixedly connected to the U-shaped plate. The front side of the connecting frame is fixedly connected with a positioning groove, and the positioning groove and the left and right sides of the inner wall of the U-shaped plate are rotatably connected with a first rotating plate, the outer side of the first rotating plate is rotatably connected with a first U-shaped block, and adjacent sides of multiple first U-shaped blocks are rotatably connected with a first telescopic sleeve, the inner side of the first U-shaped block is rotatably connected with a second rotating plate, and the outer side of the second U-shaped block is rotatably connected with a second telescopic sleeve, the outer side of the second telescopic sleeve is rotatably connected to the threaded block, and multiple second U-shaped blocks and the inner sides of the threaded block are respectively rotatably connected to the corresponding first rotating plates, and an assembling mechanism is provided on the outer side of the frame, and the assembling mechanism is used to assemble and splice multiple devices.

[0007] As a further description of the above technical solution:

[0008] The assembly mechanism includes a reserved groove, which is opened on the right side of the frame, a bidirectional spring telescopic rod is fixedly connected to the inner side of the reserved groove, a moving block is fixedly connected to the upper and lower sides of the bidirectional spring telescopic rod, a mounting hole is opened on the outer side of the moving block, and a mounting block is fixedly connected to the left side of the frame, and the moving block is engaged with the mounting block through the mounting hole.

[0009] As a further description of the above technical solution:

[0010] The rear side of the U-shaped plate is fixedly connected to a limiting plate, the outer side of the limiting plate is connected to the frame sliding rod, a groove is provided on the rear side of the outer wall of the frame, a positioning plate is slidably connected to the inner side of the groove, and the positioning plate is engaged with the limiting plate.

[0011] As a further description of the above technical solution:

[0012] The left and right sides of the outer wall of the spring telescopic rod are fixedly connected with connecting plates, the outer side of the connecting plate is fixedly connected with a bracket, and the bottom of the bracket is fixedly connected to the frame.

[0013] As a further description of the above technical solution:

[0014] Positioning blocks are fixedly connected to the left and right sides of the outer wall of the connection frame, and positioning holes are provided on the outer sides of the two positioning blocks.

[0015] As a further description of the above technical solution:

[0016] A knob is rotatably connected to the bottom of the connection frame, and a top of the knob passes through the connection frame and is fixedly connected to the first bevel gear.

[0017] As a further description of the above technical solution:

[0018] Slide grooves are provided on the left and right sides of the outer wall of the frame, and the outer sides of the threaded blocks are slidably connected to the slide grooves.

[0019] As a further description of the above technical solution:

[0020] A handle is fixedly connected to the top of the U-shaped plate, and a sheath is fixedly connected to the outer side of the handle.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by rotating the first bevel gear, the two second bevel gears and the threaded rod are driven to rotate, and then the threaded block is moved through the threaded connection, and the first rotating plate and the first U-shaped block, the second rotating plate and the second U-shaped block move accordingly, so that the whole device extends in a curved shape, and the curved shape can improve the impact resistance. The elastic force of the spring telescopic rod can make the U-shaped plate move up and down, stretch the first and second telescopic sleeves, and adjust the length and height of the device to adapt to different vehicle models and use environments, thereby improving the reliability of the device.

[0023] 2. In the utility model, the moving block can control the installation hole thereon to move up and down through the bidirectional spring telescopic rod. When two or more devices are aligned left and right, the moving blocks can be tightly connected by engaging the corresponding installation blocks and the installation holes and utilizing the telescopic function of the bidirectional spring telescopic rod to realize the combination of multiple devices, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a side protection device for a semi-trailer proposed by the utility model;

[0025] Figure 2 This is an exploded view of the partial structure of a side protection device for a semi-trailer proposed by the utility model;

[0026] Figure 3 This is a disassembled diagram of an assembly mechanism of a side protection device for a semi-trailer proposed by the utility model.

[0027] Legend:

[0028] 1. Frame; 2. Assembly mechanism; 201. Reserved slot; 202. Bidirectional spring telescopic rod; 203. Moving block; 204. Mounting hole; 205. Mounting block; 3. Connecting frame; 4. First bevel gear; 5. Second bevel gear; 6. Threaded rod; 7. Spring telescopic rod; 8. U-shaped plate; 9. Positioning slot; 10. First rotating plate; 11. First U-shaped block; 12. First telescopic sleeve; 13. Second rotating plate; 14. Second U-shaped block; 15. Second telescopic sleeve; 16. Threaded block; 17. Positioning block; 18. Positioning hole; 19. Knob; 20. Slide slot; 21. Bracket; 22. Connecting plate; 23. Limiting plate; 24. Groove; 25. Positioning plate; 26. Handle; 27. Sheath. DETAILED DESCRIPTION

[0029] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. 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.

[0030] Reference Figure 1 and Figure 2 The utility model provides an embodiment: a side protection device for a semi-trailer, comprising a frame 1, a connecting frame 3 is fixedly connected to the middle of the front side of the frame 1, a first bevel gear 4 is rotatably connected to the inner bottom of the connecting frame 3, and the left and right sides of the inner wall of the connecting frame 3 are rotatably connected to the second bevel gear 5, the first bevel gear 4 is meshed with the second bevel gear 5, a threaded rod 6 is fixedly connected to the outer side of the second bevel gear 5, a threaded block 16 is threadedly connected to the outer side of the threaded rod 6, and a second U-shaped block 14 is fixedly connected to the top of the threaded block 16, a spring telescopic rod 7 is fixedly connected to the middle of the top of the connecting frame 3, and a U-shaped plate 8 is fixedly connected to the other end of the spring telescopic rod 7, and the front side of the connecting frame 3 is fixed A positioning groove 9 is fixedly connected, and the positioning groove 9 and the left and right sides of the inner wall of the U-shaped plate 8 are rotatably connected with a first rotating plate 10, the outer side of the first rotating plate 10 is rotatably connected with a first U-shaped block 11, and the adjacent sides of multiple first U-shaped blocks 11 are rotatably connected with a first telescopic sleeve 12, the inner side of the first U-shaped block 11 is rotatably connected with a second rotating plate 13, the outer side of the second U-shaped block 14 is rotatably connected with a second telescopic sleeve 15, the outer side of the second telescopic sleeve 15 is rotatably connected with a threaded block 16, and the inner sides of multiple second U-shaped blocks 14 and threaded blocks 16 are respectively rotatably connected with the corresponding first rotating plate 10, and an assembly mechanism 2 is provided on the outer side of the frame 1, and the assembly mechanism 2 is used to assemble and splice multiple devices;

[0031] Specifically, by rotating the first bevel gear 4, the two second bevel gears 5 and the threaded rods 6 thereon can be driven to rotate by meshing transmission, and the threaded block 16 can be pushed to move by the threaded connection, and then the first U-shaped block 11 and the first telescopic sleeve 12 thereon can be driven to move through the first rotating plate 10, and at the same time, the second rotating plate 13 is caused to rotate to drive the second U-shaped block 14 and the second telescopic sleeve 15 to rotate, so that the device as a whole extends in a curved shape. In addition, the elastic potential energy of the spring telescopic rod 7 can be used to drive the U-shaped plate 8 to move up and down, thereby stretching the first telescopic sleeve 12 and the second telescopic sleeve 15, so as to achieve the purpose of adjusting the length and height of the device to adapt to different vehicle models and usage environments.

[0032] Reference Figure 2 and Figure 3 The assembly mechanism 2 includes a reserved groove 201, which is provided on the right side of the frame 1. A bidirectional spring telescopic rod 202 is fixedly connected to the inner side of the reserved groove 201. A moving block 203 is fixedly connected to the upper and lower sides of the bidirectional spring telescopic rod 202. A mounting hole 204 is provided on the outer side of the moving block 203. A mounting block 205 is fixedly connected to the left side of the frame 1. The moving block 203 is engaged with the mounting block 205 through the mounting hole 204.

[0033] Specifically, the bidirectional spring telescopic rod 202 can drive the moving block 203 and the mounting hole 204 thereon to move up and down. When two or more devices are directly aligned left and right, the corresponding mounting blocks 205 are engaged with the mounting holes 204, and the moving block 203 is tightened by relying on the extension and retraction of the bidirectional spring telescopic rod 202, so that multiple devices can be combined.

[0034] Reference Figure 2 and Figure 3 The rear side of the U-shaped plate 8 is fixedly connected with a limit plate 23, the outer side of the limit plate 23 is connected to the sliding rod of the frame 1, a groove 24 is provided on the rear side of the outer wall of the frame 1, a positioning plate 25 is slidably connected to the inner side of the groove 24, and the positioning plate 25 is engaged with the limit plate 23; the left and right sides of the outer wall of the spring telescopic rod 7 are fixedly connected with connecting plates 22, the outer side of the connecting plate 22 is fixedly connected with a bracket 21, and the bottom of the bracket 21 is fixedly connected to the frame 1; the left and right sides of the outer wall of the connecting frame 3 are fixedly connected with positioning blocks 17, and the outer sides of the two positioning blocks 17 are provided with positioning holes 18;

[0035] Specifically, the limit plate 23 can move with the movement of the U-shaped plate 8. When the positioning plate 25 is moved along the groove 24 to limit the limit plate 23, the height of the device can be restricted. By connecting the plate 22 and the bracket 21 thereon, the firmness of the fixation between the spring telescopic rod 7 and the frame 1 can be improved. By installing screws in the positioning block 17 and the positioning hole 18 thereon, the device can be easily installed and fixed.

[0036] Reference Figure 1 , Figure 2 and Figure 3 The bottom of the connecting frame 3 is rotatably connected with a knob 19, the top of the knob 19 passes through the connecting frame 3 and is fixedly connected to the first bevel gear 4; the left and right sides of the outer wall of the frame 1 are provided with slide grooves 20, the outer side of the threaded block 16 is slidably connected to the slide groove 20; the top of the U-shaped plate 8 is fixedly connected with a handle 26, and the outer side of the handle 26 is fixedly connected with a sheath 27;

[0037] Specifically, the first bevel gear 4 can be rotated conveniently by the knob 19, the stability of the threaded block 16 during movement can be improved by the slide groove 20, and the device can be easily carried and moved by the handle 26 and the sheath 27 thereon.

[0038] Working principle: before using the device, firstly, the first bevel gear 4 is rotated to drive the two second bevel gears 5 and the threaded rods 6 thereon to rotate through meshing transmission, so as to drive the threaded block 16 to move through the threaded connection, so as to drive the first U-shaped block 11 and the first telescopic sleeve 12 thereon to move through the first rotating plate 10, and at the same time drive the second rotating plate 13 to rotate, so as to drive the second U-shaped block 14 and the second telescopic sleeve 15 to rotate, so that the device as a whole extends in a curved shape, and at the same time, through the elastic potential energy of the spring telescopic rod 7, the U-shaped plate 8 can be driven to move up and down to stretch the first telescopic sleeve 12 and the second telescopic sleeve 15, and the length and height of the device can be adjusted to adapt to different vehicle models and use environments;

[0039] The two-way spring telescopic rod 202 can drive the moving block 203 and the mounting hole 204 thereon to move up and down. When two or more devices are directly aligned left and right, the corresponding mounting block 205 is engaged with the mounting hole 204, and the moving block 203 is tightened by the extension and contraction of the two-way spring telescopic rod 202, so that multiple devices can be combined;

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A side protection device for a semi-trailer, comprising a frame (1), characterized in that: A connecting frame (3) is fixedly connected to the middle of the front side of the frame (1); a first bevel gear (4) is rotatably connected to the inner bottom of the connecting frame (3); second bevel gears (5) are rotatably connected to the left and right sides of the inner wall of the connecting frame (3); the first bevel gear (4) is meshingly connected to the second bevel gear (5); a threaded rod (6) is fixedly connected to the outer side of the second bevel gear (5); a threaded block (16) is threadedly connected to the outer side of the threaded rod (6); a second U-shaped block (14) is fixedly connected to the top of the threaded block (16); a spring telescopic rod (7) is fixedly connected to the middle of the top of the connecting frame (3); the other end of the spring telescopic rod (7) is fixedly connected to the U-shaped plate (8); a positioning groove (9) is fixedly connected to the front side of the connecting frame (3); the positioning groove (9) is connected to the positioning groove (9) and the positioning groove (9) is connected to the U-shaped plate (8); The left and right sides of the inner wall of the U-shaped plate (8) are rotatably connected to a first rotating plate (10); the outer side of the first rotating plate (10) is rotatably connected to a first U-shaped block (11); adjacent sides of a plurality of the first U-shaped blocks (11) are rotatably connected to a first telescopic sleeve (12); the inner side of the first U-shaped block (11) is rotatably connected to a second rotating plate (13); the outer side of the second U-shaped block (14) is rotatably connected to a second telescopic sleeve (15); the outer side of the second telescopic sleeve (15) is rotatably connected to the threaded block (16); the inner sides of the plurality of second U-shaped blocks (14) and the threaded block (16) are respectively rotatably connected to the corresponding first rotating plate (10); and an assembly mechanism (2) is provided on the outer side of the frame (1); the assembly mechanism (2) is used to assemble and splice a plurality of devices.

2. A side protection device for a semitrailer according to claim 1, characterized in that: The assembly mechanism (2) comprises a reserved groove (201), the reserved groove (201) being provided on the right side of the frame (1), a bidirectional spring telescopic rod (202) being fixedly connected to the inner side of the reserved groove (201), a moving block (203) being fixedly connected to the upper and lower sides of the bidirectional spring telescopic rod (202), a mounting hole (204) being provided on the outer side of the moving block (203), a mounting block (205) being fixedly connected to the left side of the frame (1), and the moving block (203) being engaged with the mounting block (205) through the mounting hole (204).

3. A side protection device for a semitrailer according to claim 1, characterized in that: The rear side of the U-shaped plate (8) is fixedly connected to a limiting plate (23), the outer side of the limiting plate (23) is connected to a sliding rod of the frame (1), a groove (24) is provided on the rear side of the outer wall of the frame (1), a positioning plate (25) is slidably connected to the inner side of the groove (24), and the positioning plate (25) is engaged with the limiting plate (23).

4. A side protection device for a semitrailer according to claim 1, characterized in that: The left and right sides of the outer wall of the spring telescopic rod (7) are fixedly connected to connecting plates (22), the outer side of the connecting plate (22) is fixedly connected to a bracket (21), and the bottom of the bracket (21) is fixedly connected to the frame (1).

5. The side protection device for a semitrailer according to claim 1, characterized in that: Positioning blocks (17) are fixedly connected to the left and right sides of the outer wall of the connection frame (3), and positioning holes (18) are provided on the outer sides of the two positioning blocks (17).

6. A side protection device for a semitrailer according to claim 1, characterized in that: The bottom of the connection frame (3) is rotatably connected to a knob (19), and the top of the knob (19) passes through the connection frame (3) and is fixedly connected to the first bevel gear (4).

7. A side protection device for a semitrailer according to claim 1, characterized in that: Slide grooves (20) are provided on both left and right sides of the outer wall of the frame (1), and the outer sides of the threaded blocks (16) are slidably connected to the slide grooves (20).

8. The side protection device for a semitrailer according to claim 1, characterized in that: A handle (26) is fixedly connected to the top of the U-shaped plate (8), and a protective sheath (27) is fixedly connected to the outer side of the handle (26).

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