A front face adjustment assisting device

Abstract

The utility model relates to an auxiliary front face adjusting device, including support frame (1), the both sides of support frame (1) are equipped with machine hood positioning module (2), the lower extreme of support frame (1) is equipped with frame positioning module (3), machine hood positioning module (2) one side is equipped with fender positioning structure (4), fender positioning structure (4) one side is equipped with headlamp positioning structure (5).The utility model adopts a variety of positioning module, directly establishes the clearance correlation between the machine hood and fender, headlamp, front guard, promotes whole car appearance assembly accuracy and consistency, and each module adopts multipoint detection and greatly promotes the use precision of the utility model.

Description

Technical Field

[0001] This utility model belongs to the field of automotive manufacturing process and quality technology. Specifically, this utility model relates to an auxiliary front face adjustment device. Background Technology

[0002] In the automotive manufacturing industry, the overall vehicle exterior dimensions are a core competitive technical standard. As the final link in the accumulation of automotive dimensional tolerances, the front fascia area is a key issue for all OEMs in terms of dimensional control, including the gaps and surface differences between various components of the vehicle's interior and exterior. The gaps between various exterior components are an important indicator of the manufacturing quality of the vehicle's interior and exterior, directly affecting customers' subjective evaluation of product quality. The gaps between various front fascia components are of particular concern, especially the gaps and surface differences around the hood edges and headlights. However, in the existing technology, the front fascia tooling used to ensure the gaps between the hood and surrounding components has obvious defects. Some tooling can only directly ensure the gap between the hood and the fender, but cannot establish a direct relationship between the hood and the headlights or front bumper. This results in a long dimensional chain between various components in the front fascia area, making it difficult to accurately control the overall gaps.

[0003] According to the inventor's search, the application number published on March 18, 2025 is... CN202411726320.5 discloses an engine compartment opening size detection bracket and detection method. This invention relates to an engine compartment opening size detection bracket and detection method, including a mounting frame. The mounting frame is respectively provided with a front hood simulation block, a headlight simulation block, a front bumper simulation block, and a mounting plate. The mounting plate is connected to the engine compartment. Through the front hood simulation block, headlight simulation block, and front bumper simulation block on the mounting frame, it is possible to check whether the mounting points and surrounding mating points on the engine compartment meet the DTS (Distribution to Size) and dimensional specifications. It can also detect the mounting points of matching components in the front compartment area and the mating boundary dimensions of the engine hood and fenders. After meeting the assembly and adjustment standards, the detection bracket is removed, completing the detection. Although this invention can detect the DTS of the front of the engine compartment, the number of positioning structures is limited, and the measurement data is not comprehensive enough. Utility Model Content

[0004] This utility model was developed to solve the aforementioned problems, and its purpose is to provide an auxiliary front-end adjustment device with more accurate measurement. To achieve the above objective, the technical solution adopted by this utility model is as follows: An auxiliary front-end adjustment device includes a support frame, hood positioning modules on both sides of the support frame, a frame positioning module at the lower end of the support frame, a fender positioning structure on one side of the hood positioning module, and a headlight positioning structure on one side of the fender positioning structure.

[0005] The hood positioning module includes a hood positioning pin mechanism and a hood positioning block mechanism located on one side of the hood positioning pin mechanism.

[0006] The hood positioning pin mechanism includes a hood positioning pin base and a positioning pin adjusting block connected to the hood positioning pin base. The hood positioning pin base is connected to the upper end of the support frame, and the positioning pin adjusting block is provided with a pin.

[0007] The positioning pin adjustment block has an adjustment groove in the middle, and the pin has an adjustment rod in the middle, with the adjustment rod located in the adjustment groove.

[0008] The hood positioning block mechanism includes a first hood positioning block, a second hood positioning block, and a third hood positioning block. The first hood positioning block is located on one side of the hood positioning pin mechanism, the second hood positioning block is located on the other side of the hood positioning pin mechanism, and the first hood positioning block is located between the hood positioning pin mechanism and the third hood positioning block.

[0009] The first hood positioning block includes a first hood positioning base and a first positioning block connected to the first hood positioning base; the second hood positioning block includes a second hood positioning base and a second positioning block connected to the second hood positioning base; the third hood positioning block includes a third hood positioning base and a third positioning block connected to the third hood positioning base; the first hood positioning base is connected to the support frame; the second hood positioning base is connected to the support frame; and the third hood positioning base is connected to the support frame.

[0010] The frame positioning module includes a frame positioning pin mechanism, a first frame positioning mechanism, and a second frame positioning mechanism. The frame positioning pin mechanism is located at the end of the support frame opposite to the hood positioning pin mechanism. The first frame positioning mechanism is located at the end of the support frame opposite to the second hood positioning block. The second frame positioning mechanism is located on one side of the first frame positioning mechanism.

[0011] The frame positioning pin mechanism includes a frame positioning pin base and a frame positioning pin connected to the frame positioning pin base. The frame positioning pin base is connected to the support frame. The first frame positioning mechanism includes a first frame positioning base and a first frame positioning block connected to the first frame positioning base. The second frame positioning mechanism includes a second frame positioning base and a second frame positioning block connected to the second frame positioning base. The first frame positioning base is connected to the support frame, and the second frame positioning base is connected to the support frame.

[0012] The system includes a front bumper positioning block, a fender positioning structure including a fender positioning block, the fender positioning blocks being located on both sides of the support frame, the front bumper positioning block being located between the fender positioning blocks, the front bumper positioning block being located in the middle of the support frame, and a headlight positioning structure including a headlight positioning block, the headlight positioning block being located on one side of the front bumper positioning block.

[0013] The support frame is provided with a support beam, which is located on one side of the front bumper positioning block.

[0014] The technical effects of this utility model are as follows: This utility model is an auxiliary front-end adjustment device, including a support frame. Hood positioning modules are provided on both sides of the support frame, and a frame positioning module is provided at the lower end of the support frame. A fender positioning structure is provided on one side of the hood positioning module, and a headlight positioning structure is provided on one side of the fender positioning structure. This utility model, by adopting a structural design positioned on the vehicle frame with corresponding positioning blocks, directly establishes the gap relationship between the hood and fenders, headlights, and front bumper, effectively shortening the dimensional chain between these components. It solves the problems of ensuring the gap between the hood and fenders and the inability to establish a direct relationship between the hood and headlights or front bumper, ensuring that the entire vehicle's front end meets DTS standards, improving the overall vehicle appearance assembly precision and consistency. Simultaneously, the use of lightweight carbon fiber materials overcomes the problems of large and heavy traditional tooling, significantly improving the convenience of on-site operation, reducing operational difficulty and labor intensity, and adapting to relevant assembly needs without additional accessories, further improving assembly efficiency and practicality. The use of multiple positioning mechanisms in conjunction increases the accuracy of this utility model. Attached Figure Description

[0015] This manual includes the following figures, which illustrate the following: Figure 1 This is a schematic diagram of the overall structure of an auxiliary front-end adjustment device according to the present invention; Figure 2 This is a schematic diagram of the overall structure of an auxiliary front-end adjustment device according to the present invention; Figure 3 This is a schematic diagram of the usage state of an auxiliary front face adjustment device according to this utility model; The diagram is labeled as follows: 1. Support frame; 11. Support beam; 2. Hood positioning module; 21. Hood positioning pin mechanism; 211. Hood positioning pin base; 212. Positioning pin adjusting block; 213. Pin; 214. Adjusting groove; 215. Adjusting rod; 22. Hood positioning block mechanism; 23. First hood positioning block; 231. First hood positioning seat; 232. First positioning block; 24. Second hood positioning block; 241. Second hood positioning base; 242. Second positioning block; 25. Third hood positioning block; 251. 252. Third hood positioning base; 3. Third positioning block; 3. Frame positioning module; 31. Frame positioning pin mechanism; 311. Frame positioning pin base; 312. Frame positioning pin; 32. First frame positioning mechanism; 321. First frame positioning base; 322. First frame positioning block; 33. Second frame positioning mechanism; 331. Second frame positioning base; 332. Second frame positioning block; 4. Fender positioning structure; 41. Fender positioning block; 5. Headlight positioning mechanism; 51. Headlight positioning block; 6. Front bumper positioning block. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of this utility model, and to facilitate its implementation.

[0017] like Figure 1 As shown, an auxiliary front-end adjustment device includes a support frame 1, hood positioning modules 2 on both sides of the support frame 1, a frame positioning module 3 at the lower end of the support frame 1, a fender positioning structure 4 on one side of the hood positioning module 2, and a headlight positioning structure 5 on one side of the fender positioning structure 4. The support frame 1, as the core load-bearing structure of the device, provides a stable installation foundation for each positioning module, ensuring the overall structural rigidity. The partitioned arrangement of the hood positioning module 2, fender positioning structure 4, and headlight positioning structure 5 achieves synchronous positioning of the hood with surrounding components such as the fender and headlights, breaking the limitation of the existing technology that only guarantees the gap between the hood and the fender, directly establishing a gap correlation between the hood and multiple components, shortening the dimensional chain, and improving the DTS control accuracy of the front-end area. The frame positioning module 3, through precise docking with the vehicle frame, ensures the reliability of the overall positioning benchmark of this utility model, avoiding gap adjustment errors caused by the device's own positioning deviation, laying the foundation for subsequent precise adjustment of the gaps of each component. Simultaneously, this utility model uses carbon fiber material, reducing the frame weight while ensuring support strength, and improving on-site operation convenience.

[0018] like Figure 1 and Figure 2As shown, the hood positioning module 2 includes a hood positioning pin mechanism 21 and a hood positioning block mechanism 22 located on one side of the hood positioning pin mechanism 21. The combined design of the hood positioning pin mechanism 21 and the hood positioning block mechanism 22 forms a dual positioning mode. The hood positioning pin mechanism 21 enables the hood to be quickly and accurately inserted and positioned at specific holes, ensuring the accuracy of the initial installation position of the hood; the hood positioning block mechanism 22 provides auxiliary limiting from the side or end face of the hood, restricting the hood's offset in the horizontal or vertical direction. The two work together to effectively prevent the hood from shaking or shifting during gap adjustment, improving the positioning stability of the hood, thereby ensuring the consistency of the gap adjustment between the hood and surrounding components, and solving the problem of hood positioning deviation that is easily caused by a single positioning method in the prior art.

[0019] like Figure 1 and Figure 2 As shown, the hood positioning pin mechanism 21 includes a hood positioning pin base 211 and a positioning pin adjusting block 212 connected to the hood positioning pin base 211. The hood positioning pin base 211 is connected to the upper end of the support frame 1, and the positioning pin adjusting block 212 is provided with a pin 213. The hood positioning pin base 211 realizes a stable connection between the hood positioning pin mechanism 21 and the support frame 1, ensuring that the hood positioning pin mechanism 21 is consistent with the reference of the support frame 1, and avoiding positioning offset caused by loose connection. The positioning pin adjusting block 212 provides a carrier for the installation and adjustment of the pin 213. The pin 213 can realize the rapid positioning of the hood by cooperating with the preset hole on the hood. At the same time, the design of the positioning pin adjusting block 212 provides space for the position adjustment of the pin 213.

[0020] like Figure 2 As shown, the positioning pin adjusting block 212 has an adjusting groove 214 in the middle, and the pin 213 has an adjusting rod 215 in the middle, with the adjusting rod 215 located within the adjusting groove 214. The mating structure of the adjusting groove 214 and the adjusting rod 215 enables the adjustable position of the pin 213. The adjusting rod 215 can move along the extending direction of the adjusting groove 214. Before use, the adjusting rod 215 can be adjusted below the adjusting groove 214 to facilitate installation of this invention on a vehicle and prevent the pin 213 from protruding and scratching the paint.

[0021] like Figure 1 and Figure 2As shown, the hood positioning block mechanism 22 includes a first hood positioning block 23, a second hood positioning block 24, and a third hood positioning block 25. The first hood positioning block 23 is located on one side of the hood positioning pin mechanism 21, and the second hood positioning block 24 is located on the other side of the hood positioning pin mechanism 21. The first hood positioning block 23 is located between the hood positioning pin mechanism 21 and the third hood positioning block 25. The distributed layout of the multiple positioning blocks forms multi-point limiting from different directions of the hood. This expands the positioning coverage area, provides auxiliary support and limiting for the edges of the hood or non-positioning pin areas, ensures uniform force on the hood as a whole, avoids hood deformation caused by local single-point positioning, and effectively disperses the external force on the hood during adjustment, reducing damage caused by excessive local force, improving the stability and safety of hood positioning, and thus ensuring that the accuracy of gap adjustment is not affected by hood deformation.

[0022] like Figure 1 As shown, the first hood positioning block 23 includes a first hood positioning base 231 and a first positioning block 232 connected to the first hood positioning base 231; the second hood positioning block 24 includes a second hood positioning base 241 and a second positioning block 242 connected to the second hood positioning base 241; and the third hood positioning block 25 includes a third hood positioning base 251 and a third positioning block 252 connected to the third hood positioning base 251. The first hood positioning base 231 is connected to the support frame 1; the second hood positioning base 241 is connected to the support frame 1; and the third hood positioning base 251 is connected to the support frame 1. The first hood positioning base 231 and the first positioning block 232 are designed as separate units; the second hood positioning base 241 and the second positioning block 242 are designed as separate units; and the third hood positioning base 251 and the third positioning block 252 are designed as separate units. On the one hand, the bases ensure a stable connection with the support frame 1, guaranteeing a unified installation reference for the positioning blocks and preventing misalignment due to unstable connections. On the other hand, the positioning blocks can be customized according to the hood's shape and positioning requirements, facilitating individual replacement and maintenance. When a positioning block wears out due to long-term use, it is not necessary to replace the entire hood positioning block mechanism 22; only the worn positioning block needs to be replaced, reducing maintenance costs and time. Furthermore, the unified base design connecting to the support frame ensures the relative positional accuracy between the positioning blocks, further improving the consistency and accuracy of hood positioning. Different bases can be used for different vehicle models, expanding the applicability of this invention.

[0023] like Figure 1As shown, the frame positioning module 3 includes a frame positioning pin mechanism 31, a first frame positioning mechanism 32, and a second frame positioning mechanism 33. The frame positioning pin mechanism 31 is located at the end of the support frame 1 opposite to the hood positioning pin mechanism 21. The first frame positioning mechanism 32 is located at the end of the support frame 1 opposite to the second hood positioning block 24. The second frame positioning mechanism 33 is located on one side of the first frame positioning mechanism 32. The multi-directional layout of the frame positioning pin mechanism 31, the first frame positioning mechanism 32, and the second frame positioning mechanism 33 enables multi-point positioning of the support frame 1 and the vehicle body frame. The frame positioning pin mechanism 31, through its cooperation with the pre-set pin holes on the vehicle body, quickly determines the initial position of the support frame 1, ensuring the accuracy of the overall positioning reference of the tooling. The first frame positioning mechanism 32 and the second frame positioning mechanism 33 provide auxiliary limiting to the support frame 1 from different surfaces, restricting the displacement of the support frame 1 and preventing the tooling from shifting due to vibration or external forces during use, thus ensuring the positioning stability between the tooling and the vehicle body. Compared to single-reference positioning, this multi-point positioning design significantly improves the overall positioning accuracy and anti-interference capability of the tooling, providing a reliable reference guarantee for the precise adjustment of the gaps between various components.

[0024] like Figure 1 and Figure 2 As shown, the frame positioning pin mechanism 31 includes a frame positioning pin base 311 and a frame positioning pin 312 connected to the frame positioning pin base 311. The frame positioning pin base 311 is connected to the support frame 1. The first frame positioning mechanism 32 includes a first frame positioning base 321 and a first frame positioning block 322 connected to the first frame positioning base 321. The second frame positioning mechanism 33 includes a second frame positioning base 331 and a second frame positioning block 332 connected to the second frame positioning base 331. The first frame positioning base 321 is connected to the support frame 1, and the second frame positioning base 331 is connected to the support frame 1. The design of the frame positioning pin base 311, the first frame positioning base 321, and the second frame positioning base 331 ensures a stable connection between each positioning component and the supporting frame 1, avoiding positioning deviations caused by loose connections. The frame positioning pin 312, through precise cooperation with the body pin hole, enables quick and accurate docking of the tooling with the body, reducing tooling installation time. The first frame positioning block 322 and the second frame positioning block 332, through fitting and limiting the corresponding structure of the body, further enhance the positioning reliability of the tooling and the body, restrict the degree of freedom of this utility model in multiple directions, ensure that the tooling always maintains a stable relative position with the body during the gap adjustment process, and avoid gap adjustment errors caused by tooling displacement. The split structure facilitates the replacement of suitable accessory pins according to the differences in body structure of different vehicle models, improving the versatility of the tooling.

[0025] like Figure 1 and Figure 2As shown, it includes a front bumper positioning block 6, the fender positioning structure 4 includes fender positioning blocks 41, the fender positioning blocks 41 are arranged on both sides of the support frame 1, the front bumper positioning block 6 is arranged between the fender positioning blocks 41, the front bumper positioning block 6 is arranged in the middle of the support frame 1, the headlamp positioning structure 5 includes a headlamp positioning block 51, and the headlamp positioning block 51 is arranged on one side of the front bumper positioning block 6. The addition of the front bumper positioning block 6 realizes the direct positioning association between the hood and the front bumper, and combined with the fender positioning structure 4 and the headlamp positioning structure 5, forms a full-dimensional positioning coverage of the hood with the fender, the headlamp and the front bumper, solves the defect in the prior art that the gap relationship between the hood and multiple components cannot be established at the same time, further shortens the overall dimension chain loop of the front face area, and improves the cooperative control accuracy of the gaps between the components; the layout of the fender positioning blocks 41 on both sides of the support frame 1 can symmetrically position the left and right fenders; the front bumper positioning block 6 is located in the middle of the support frame 1 and is arranged adjacent to the headlamp positioning block 51, which facilitates the synchronous adjustment of the gaps between the front bumper and the hood, and between the front bumper and the headlamp, reduces the cumulative error when each component is adjusted separately. At the same time, the partitioned arrangement of each positioning block enables the gap adjustment to be carried out in partitions, making the operation more targeted and improving the adjustment efficiency.

[0026] As Figure 1 shown, a support cross beam 11 is arranged in the support frame 1, and the support cross beam 11 is arranged on one side of the front bumper positioning block 6. The use of the support cross beam 11 increases the strength of the overall structure, and can effectively reduce the probability of deformation of the support frame 1.

[0027] As Figure 1 and Figure 2 shown, the headlamp positioning block 51 is a long strip plate with a bend, the fender positioning block 41 is a long strip plate with a bend, the support frame 1 is in a shape of the Chinese character "mu", the frame positioning pin base 311 is L-shaped, the first frame positioning base 321 is rectangular, the first frame positioning block 322 is L-shaped, the second frame positioning base 331 is Z-shaped, the first frame positioning block 322 is L-shaped, the first hood positioning base 231 is trapezoidal, the first positioning block 232 is L-shaped, the second hood positioning base 241 is in a shape of the Chinese character "gong", the second positioning block 242 is L-shaped, the third hood positioning base 251 is L-shaped, the third positioning block 252 is L-shaped, the positioning pin adjusting block 212 is rectangular, the adjusting groove 214 is in a shape of the Chinese character "gong", and the bolt 213 is T-shaped. The T-shaped structure of the bolt 213 can prevent the bolt 213 from falling off. The overall structure of the utility model adopts a split connection structure, which greatly increases the applicable scope of the utility model.

[0028] This utility model is an auxiliary front-end adjustment device, including a support frame 1, hood positioning modules 2 on both sides of the support frame 1, a frame positioning module 3 at the lower end of the support frame 1, a fender positioning structure 4 on one side of the hood positioning module 2, and a headlight positioning structure 5 on one side of the fender positioning structure 4. In use, the adjusting rod 215 is adjusted to the lower slot of the adjusting groove 214, and then the utility model is installed into the hood compartment of the car through the frame positioning module 3. The frame positioning pin mechanism 31, the first frame positioning mechanism 32, and the second frame positioning mechanism 33 are adjusted to ensure that the support frame 1 is in the correct position. The adjusting rod 215 is then adjusted to the upper slot of the adjusting groove 214, and the relative positions of the hood positioning module 2, the fender positioning structure 4, the headlight positioning structure 5, and the front bumper positioning block 6 with each component are observed. This utility model uses multiple positioning blocks for each positioning mechanism, greatly improving the accuracy of its use; the extensive use of split mounting bases and limiting blocks allows for replacement of mounting bases or limiting blocks according to different vehicle sizes, expanding the applicability of this utility model. This utility model has a simple overall structure, is easy to manufacture, and has strong practicality.

[0029] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. An auxiliary front-end adjustment device, characterized in that, It includes a support frame (1), a hood positioning module (2) on both sides of the support frame (1), a frame positioning module (3) at the lower end of the support frame (1), a fender positioning structure (4) on one side of the hood positioning module (2), and a headlight positioning structure (5) on one side of the fender positioning structure (4).

2. The auxiliary front face adjustment device according to claim 1, characterized in that: The hood positioning module (2) includes a hood positioning pin mechanism (21) and a hood positioning block mechanism (22) located on one side of the hood positioning pin mechanism (21).

3. The auxiliary front face adjustment device according to claim 2, characterized in that: The hood positioning pin mechanism (21) includes a hood positioning pin base (211) and a positioning pin adjusting block (212) connected to the hood positioning pin base (211). The hood positioning pin base (211) is connected to the upper end of the support frame (1), and the positioning pin adjusting block (212) is provided with a pin (213).

4. The auxiliary front face adjustment device according to claim 3, characterized in that: The positioning pin adjusting block (212) has an adjusting groove (214) in the middle, and the pin (213) has an adjusting rod (215) in the middle, and the adjusting rod (215) is located in the adjusting groove (214).

5. The auxiliary front face adjustment device according to claim 4, characterized in that: The hood positioning block mechanism (22) includes a first hood positioning block (23), a second hood positioning block (24) and a third hood positioning block (25). The first hood positioning block (23) is located on one side of the hood positioning pin mechanism (21), the second hood positioning block (24) is located on the other side of the hood positioning pin mechanism (21), and the first hood positioning block (23) is located between the hood positioning pin mechanism (21) and the third hood positioning block (25).

6. The auxiliary front face adjustment device according to claim 5, characterized in that: The first hood positioning block (23) includes a first hood positioning base (231) and a first positioning block (232) connected to the first hood positioning base (231). The second hood positioning block (24) includes a second hood positioning base (241) and a second positioning block (242) connected to the second hood positioning base (241). The third hood positioning block (25) includes a third hood positioning base (251) and a third positioning block (252) connected to the third hood positioning base (251). The first hood positioning base (231) is connected to the support frame (1). The second hood positioning base (241) is connected to the support frame (1). The third hood positioning base (251) is connected to the support frame (1).

7. The auxiliary front face adjustment device according to claim 6, characterized in that: The frame positioning module (3) includes a frame positioning pin mechanism (31), a first frame positioning mechanism (32), and a second frame positioning mechanism (33). The frame positioning pin mechanism (31) is located at the end of the support frame (1) opposite to the hood positioning pin mechanism (21). The first frame positioning mechanism (32) is located at the end of the support frame (1) opposite to the second hood positioning block (24). The second frame positioning mechanism (33) is located on one side of the first frame positioning mechanism (32).

8. The auxiliary front face adjustment device according to claim 7, characterized in that: The frame positioning pin mechanism (31) includes a frame positioning pin base (311) and a frame positioning pin (312) connected to the frame positioning pin base (311). The frame positioning pin base (311) is connected to the support frame (1). The first frame positioning mechanism (32) includes a first frame positioning base (321) and a first frame positioning block (322) connected to the first frame positioning base (321). The second frame positioning mechanism (33) includes a second frame positioning base (331) and a second frame positioning block (332) connected to the second frame positioning base (331). The first frame positioning base (321) is connected to the support frame (1), and the second frame positioning base (331) is connected to the support frame (1).

9. The auxiliary front face adjustment device according to claim 1, characterized in that: The front bumper positioning block (6) is included. The fender positioning structure (4) includes a fender positioning block (41). The fender positioning block (41) is located on both sides of the support frame (1). The front bumper positioning block (6) is located between the fender positioning blocks (41) and in the middle of the support frame (1). The headlight positioning structure (5) includes a headlight positioning block (51). The headlight positioning block (51) is located on one side of the front bumper positioning block (6).

10. An auxiliary front-end adjustment device according to any one of claims 1 to 9, characterized in that: The support frame (1) is provided with a support beam (11), which is located on one side of the front guard positioning block (6).

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