Scribing device for bend repair for semitrailer

Abstract

The utility model relates to the technical field of vehicle maintenance, and particularly discloses a marking device for bending repair of a semitrailer, which comprises a counterweight base. The counterweight base is provided with an opening and is sleeved with a limiting cover in a threaded manner; a stepped shaft is rotationally connected into the limiting cover; the stepped shaft is sleeved with a nut in a threaded mode. A joint unit is arranged on the stepped shaft; the counter weight base is placed on the inner surface of a semitrailer carriage, then the shape of the joint unit is changed, and the vertical extending distance of the movable shaft is adjusted, so that the marking pin is adjusted to be close to the metal corrugated board, then the rotating nut is loosened, the marking pin can vertically rotate around the stepped shaft, and marking is conducted on the surface of the metal corrugated board. When a straight line needs to be drawn, a horizontal line can be drawn only by keeping the scriber horizontal, and when the straight line is drawn in a narrow space and a complex short distance, the quick release seat can be taken down in the fixed block, so that the quick release seat is held to control the scriber to draw the line.

Description

Technical Field

[0001] This utility model relates to the field of vehicle repair technology, specifically a scribing device for bending repair of semi-trailers. Background Technology

[0002] Our box semi-trailer series is suitable for transporting household appliances, light textiles, coal, sand and gravel, and other building materials, as well as palletized goods. Box semi-trailers have strong load-bearing capacity, high safety factor, reasonable design, sturdiness and durability, and advanced manufacturing process.

[0003] Chinese utility model patent CN209717695U, published on December 3, 2019, discloses a positioning and marking device for repairing and positioning the neck weld of a shellfish trap. The device includes a blind flange, a support rod, a main sliding block, a crossbar, a secondary sliding block, and a positioning rod. The blind flange has a disc-like structure; the support rod is perpendicularly positioned at the center of the blind flange; the main sliding block is mounted on the support rod and can move up and down along it, and rotate about the support rod; the crossbar is perpendicularly positioned on the main sliding block; the secondary sliding block is mounted on the crossbar and can move horizontally along it, and rotate about the crossbar; the positioning rod is perpendicularly positioned on the secondary sliding block and can move up and down. This positioning and marking device is simple to operate, convenient to use, and can clearly define the rubber lining grinding area, preventing excessive or insufficient rubber lining grinding and ensuring proper assembly of the subsequent transmission system.

[0004] However, the above-mentioned publicly disclosed solutions have the following shortcomings: the existing repair devices can only be used to draw arcs and circles, and cannot be applied to the repair of metal corrugated sheets of semi-trailers. They cannot draw straight lines or uneven object surfaces, and therefore cannot be applied to the sheet metal repair of semi-trailer cargo boxes. Utility Model Content

[0005] The purpose of this invention is to solve the technical problem that existing repair devices can only be used to draw arcs and circles, and cannot be applied to the repair of metal corrugated sheets of semi-trailers, nor can they draw straight lines or uneven surfaces, thus making them unsuitable for sheet metal repair of semi-trailer cargo boxes. This invention provides a scribing device for bending repair of semi-trailers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution;

[0007] This utility model discloses a marking device for bending repair of semi-trailers, comprising a counterweight base; a limit cover threadedly fitted into a hole on the counterweight base; a stepped shaft rotatably connected within the limit cover; a nut threadedly fitted onto the stepped shaft; a joint unit provided on the stepped shaft; a movable shaft slidably inserted into the joint unit; a fixing block fixedly connected to one end of the movable shaft; a chamfered groove provided within the fixing block; a first magnetic block inserted into the chamfered groove; a second magnetic block magnetically connected to the first magnetic block; a quick-release seat fitted onto the second magnetic block; a drill chuck fixedly connected to the quick-release seat; and a marking needle inserted into the drill chuck.

[0008] Furthermore, the joint unit includes a first positioning pin and a first locking pin inserted into the stepped shaft; multiple unit cantilever arms connected end-to-end are sleeved on the first positioning pin and the first locking pin; a second positioning pin and a second locking pin are inserted into the upper end of the unit cantilever arms; and movable blocks are sleeved on the second positioning pin and the second locking pin.

[0009] Furthermore, the unit cantilever and stepped shaft are provided with first locking holes corresponding to the first locking pin annular array.

[0010] The present invention provides a marking device for bending repair of semi-trailers, which has the following beneficial effects:

[0011] 1. This utility model places a counterweight base on the inner surface of a semi-trailer compartment, then changes the shape of the joint unit and adjusts the vertical extension distance of the movable shaft to bring the scriber closer to the metal corrugated plate. Then, the nut is rotated to loosen the scriber, allowing it to rotate vertically around the stepped shaft and scribe lines on the surface of the metal corrugated plate, drawing arcs of the required distance. When drawing straight lines, simply keep the scriber horizontal to draw a horizontal line. When scribing lines in a confined space or over complex short distances, the quick-release seat can be removed and placed inside the fixing block to hold the quick-release seat and control the scriber to scribe lines.

[0012] 2. This utility model uses multiple unit cantilever arms connected end to end, which can be combined and used together. The angle between the multiple unit cantilever arms can be changed, thereby adjusting the distance of the scribing needle and thus maximizing the scribing range. It also allows the movable shaft to be loosely located vertically downward within the movable block. When the movable shaft rotates around the counterweight base, it can scribing vertically along the uneven surface of the corrugated metal plate, making the scribing continuous. Then, when a straight line needs to be drawn, simply loosen the nut so that the movable shaft can rotate around the stepped shaft, thereby drawing a horizontal straight line on the vertical surface of the corrugated metal plate. Attached Figure Description

[0013] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings;

[0014] Figure 1 This is a schematic diagram of the first isometric structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the second isometric structure of this utility model;

[0016] Figure 3 This is a front view schematic diagram of the structure of this utility model.

[0017] The following are the labels in the diagram: 1. Counterweight base; 2. Grounding magnet; 3. Limiting cover; 4. Stepped shaft; 5. Nut; 6. First positioning pin; 7. First locking pin; 8. Second positioning pin; 9. Second locking pin; 10. Movable block; 11. Movable shaft; 12. Fastener; 13. Fixing block; 14. Chamfered groove; 15. First magnet; 16. Second magnet; 17. Quick release seat; 18. Drill chuck; 19. Scribing needle; 20. Unit cantilever; 21. First locking hole; 22. Second locking hole. Detailed Implementation

[0018] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] It should be noted that all directional indications (such as up-down-left-right-forward-backward...) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0021] Please see Figure 1-3As shown, a marking device for bending repair of semi-trailers includes a counterweight base 1; a limit cover 3 is threadedly fitted onto a hole in the counterweight base 1; a stepped shaft 4 is rotatably connected inside the limit cover 3; a nut 5 is threaded onto the stepped shaft 4; a joint unit is provided on the stepped shaft 4; a movable shaft 11 is slidably inserted into the joint unit; a fixing block 13 is fixedly connected to one end of the movable shaft 11; a chamfered groove 14 is provided inside the fixing block 13; a first magnetic block 15 is inserted into the chamfered groove 14; a second magnetic block 16 is magnetically connected to the first magnetic block 15; a quick-release seat 17 is fitted onto the second magnetic block 16; a drill chuck 18 is fixedly connected to the quick-release seat 17; and a drill chuck 18 is inserted into the drill chuck 18. The scriber 19 is attached and placed on the inner surface of the semi-trailer compartment via the counterweight base 1. Then, the shape of the joint unit is changed, and the vertical extension distance of the movable shaft 11 is adjusted so that the scriber 19 is close to the metal corrugated plate. Then, the nut 5 is rotated to loosen it, so that the scriber 19 can rotate vertically around the stepped shaft 4 and scribing on the surface of the metal corrugated plate, drawing an arc of the required distance. When a straight line needs to be drawn, simply keep the scriber 19 horizontal to draw a horizontal line. When scribing in a narrow space and for complex short distances, the quick-release seat 17 can be removed and placed inside the fixing block 13, so that the quick-release seat 17 can be held to control the scriber 19 to scribing.

[0022] The joint unit includes a first positioning pin 6 and a first locking pin 7 inserted into the stepped shaft 4; multiple unit cantilever arms 20 connected end to end are sleeved on the first positioning pin 6 and the first locking pin 7; a second positioning pin 8 and a second locking pin 9 are inserted into the upper end of the unit cantilever arms 20; a movable block 10 is sleeved on the second positioning pin 8 and the second locking pin 9. Through the multiple unit cantilever arms 20 connected end to end, they can be used in combination and the angle between the multiple unit cantilever arms 20 can be changed, thereby adjusting the distance of the scribing needle 19, thus maximizing the scribing range; and the movable shaft 11 can be loosely positioned vertically downward within the movable block 10, so that when the movable shaft 11 rotates around the counterweight base 1, it can scribing vertically on the uneven metal corrugated plate surface with the undulations, making the scribing continuous. Then, when a straight line needs to be drawn, simply loosen the nut so that the movable shaft 11 can rotate around the stepped shaft 4, thereby drawing a horizontal straight line on the vertical metal corrugated plate surface.

[0023] The unit cantilever 20 and the stepped shaft 4 are provided with first locking holes 21 in a circular array corresponding to the first locking pins 7. By changing the different positions of the first locking pins 7 in the first locking holes 21, the rotation angle between the unit cantilever 20 and the stepped shaft 4 can be fixed, such as 45 degrees, 90 degrees, 135 degrees and 180 degrees. This allows the relative angle between the unit cantilever 20 and the stepped shaft 4 to be adjusted according to the marking requirements, which is beneficial for marking.

[0024] The unit cantilever 20 and the movable block 10 are provided with second locking holes 22 in a circular array corresponding to the second locking pins 9. By changing the different positions of the second locking pins 9 in the second locking holes 22, the rotation angle between the unit cantilever 20 and the movable block 10 can be fixed, such as 45 degrees, 90 degrees, 135 degrees and 180 degrees. This allows the relative angle between the unit cantilever 20 and the movable block 10 to be adjusted according to the marking requirements, which is beneficial for marking.

[0025] The movable block 10 has a threaded connection to the corresponding movable shaft 11 through the opening. By rotating the fastener 12 in both directions, the friction force on the movable shaft 11 is changed, thereby adjusting the distance of the movable shaft 11 within the movable block 10. This allows for easier line marking as needed.

[0026] The lower surface of the counterweight base 1 is grooved and fixed with a grounding magnet 2. Through the magnetic connection between the grounding magnet 2 and the metal corrugated plate, this device can be fixed to the ground by gravity, and at the same time, it can be magnetically connected and fixed to the vertical surface and top surface of the corrugated plate of the semi-trailer, thus making the semi-trailer repair process more efficient.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A marking device for bending repair of semi-trailers, characterized in that; The system includes a counterweight base (1); a limit cover (3) is threaded onto the counterweight base (1); a stepped shaft (4) is rotatably connected inside the limit cover (3); a nut (5) is threaded onto the stepped shaft (4); a joint unit is provided on the stepped shaft (4); a movable shaft (11) is slidably inserted into the joint unit; a fixing block (13) is fixed to one end of the movable shaft (11); a chamfered groove (14) is provided inside the fixing block (13); a first magnetic block (15) is inserted into the chamfered groove (14); a second magnetic block (16) is magnetically connected to the first magnetic block (15); a quick-release seat (17) is sleeved on the second magnetic block (16); a drill chuck (18) is fixed to the quick-release seat (17); and a scribing needle (19) is inserted into the drill chuck (18).

2. The marking device for bending repair of semi-trailers according to claim 1, characterized in that: The joint unit includes a first positioning pin (6) and a first locking pin (7) inserted into the stepped shaft (4); a plurality of unit cantilever arms (20) connected end to end are sleeved on the first positioning pin (6) and the first locking pin (7); a second positioning pin (8) and a second locking pin (9) are inserted into the upper end of the unit cantilever arm (20); a movable block (10) is sleeved on the second positioning pin (8) and the second locking pin (9).

3. The marking device for bending repair of semi-trailers according to claim 2, characterized in that: The unit cantilever (20) and stepped shaft (4) are provided with first locking holes (21) in a ring array corresponding to the first locking pins (7).

4. The marking device for bending repair of semi-trailers according to claim 2, characterized in that: The unit cantilever (20) and movable block (10) are provided with second locking holes (22) in a ring array corresponding to the second locking pins (9).

5. The marking device for bending repair of semi-trailers according to claim 2, characterized in that: Fasteners (12) are threadedly connected to the corresponding movable shaft (11) on the movable block (10).

6. The marking device for bending repair of semi-trailers according to claim 1, characterized in that: The counterweight base (1) has a groove on its lower surface and a grounding magnetic block (2) is fixedly connected thereto.

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