Cambered surface pressing mechanism

Abstract

The invention provides a cambered surface pressing mechanism, and relates to the technical field of railway vehicles. The mechanism comprises a device main body which is provided with a hanging end and a fixed end in the height direction; the suspension assembly comprises a suspension part, the suspension part is connected to the suspension end, and the suspension part is constructed to be suspended on the walking board; the fixing piece is connected to the fixing end, and the fixing piece and the hanging piece are located on the two opposite sides of the device body in the front-back direction; the fixing part is selectively connected with a fixing device, the fixing device is located on the side, away from the device body, of the fixing part, and a gap is formed between the fixing device and the fixing part in the front-back direction of the device body. The pressing piece and the fixing piece are located on the same side of the device body, and the pressing piece is located between the hanging end and the fixing end and connected with the device body; the end, away from the first connecting piece, of the pressing piece is an arc-shaped pressing face, and the arc-shaped pressing face is constructed to abut against an arc face of a framework skin of the vehicle so as to achieve the effects of being simple in structure and suitable for arc faces of any curvature.

Description

Technical Field

[0001] This application relates to the field of rail vehicle technology, and in particular to an arc-shaped clamping mechanism. Background Technology

[0002] Special oversized rail vehicles, whose height and width exceed the limits of Class I or Class II, are typically assembled using a monolithic frame and skin structure in current processes. However, due to limitations in tooling dimensions and factory space, a segmented skin structure is gradually being adopted. In this process, thin-plate pre-formed skins need to be hoisted into the frame using lifting equipment and then pressed firmly using an arc-surface clamping mechanism to ensure complete fit between the segmented skins and the frame, guaranteeing the flatness and aesthetics after welding.

[0003] Existing clamping technologies mainly include two forms: hydraulic clamping block clamping and hydraulic section point clamping. Hydraulic clamping blocks use hydraulic cylinders to vertically or rotately push the forming blocks to clamp the curved surface; hydraulic section point clamping uses multiple points on the entire curved surface to clamp, utilizing the forming blocks as clamping platforms to ensure a close fit between the wall panel and the frame.

[0004] However, existing curved surface clamping mechanisms are costly and only suitable for curved surfaces with small curvature changes. When dealing with curved surfaces with large curvature changes, the poor flexibility of these mechanisms makes it impossible to guarantee a proper fit between the segmented skin and the frame, resulting in poor flatness after welding. These problems affect production efficiency and product quality, necessitating an improved curved surface clamping mechanism to meet the manufacturing requirements of special oversized rail vehicles. Summary of the Invention

[0005] This application provides an arc-shaped pressing mechanism, which achieves a simple structure, high flexibility, and the ability to press at different arc curvature positions, ensuring the fit between the skin and the frame and good flatness after welding.

[0006] In a first aspect, embodiments of this application provide an arc-shaped pressing mechanism, comprising:

[0007] The main body of the device has a suspension end and a fixed end in the height direction;

[0008] A suspension assembly includes a suspension member connected to the suspension end, and the suspension member is configured to be suspended on a walkway;

[0009] A fixing member is connected to the fixing end, and the fixing member and the suspension member are located on opposite sides of the device body in the front-rear direction; the fixing member is configured to be selectively connected to a fixing device, the fixing device is located on the side of the fixing member away from the device body, and the fixing device has a gap with the fixing member in the front-rear direction of the device body.

[0010] A clamping member and a fixing member are located on the same side of the main body of the device, and the clamping member is located between the suspension end and the fixing end and is connected to the main body of the device; the end of the clamping member away from the first connecting member is an arc-shaped clamping surface, and the arc-shaped clamping surface is constructed to abut against the arc surface of the vehicle's frame skin.

[0011] In one possible implementation, the fastener has a connecting portion and a fixing portion, the connecting portion being connected to the main body of the device, and the fixing portion being selectively hooked onto the fastening device.

[0012] In one possible implementation, the length of the suspension member is greater than the width of the walkway, and the length direction of the suspension member and the width direction of the walkway are both parallel to the front-back direction of the main body of the device.

[0013] In one possible implementation, the suspension assembly further includes a rolling element connected to the side of the suspension assembly facing the vehicle platform and in rolling contact with the vehicle platform.

[0014] In one possible implementation, the arc-shaped clamping device further includes a connecting assembly, the connecting assembly including a first connector located between the device body and the suspended end and the fixed end;

[0015] One end of the first connector is connected to the clamping member, and the other end is movably connected to the main body of the device.

[0016] In one possible implementation, the connecting assembly further includes a second connector, at least a portion of which is located on the side of the first connector away from the clamping member, and the second connector is connected between the first connector and the device body, and the second connector is a retractable structure.

[0017] In one possible implementation, the connection assembly further includes a third connector and a fourth connector, the third connector being located between the second connector and the device body, and the third connector being connected to the device body;

[0018] The third connector has multiple position adjustment holes with a gap between adjacent position adjustment holes. The fourth connector passes through one of the position adjustment holes and connects the third connector and the second connector.

[0019] In one possible implementation, the third connector is an arc-shaped plate, the surface of which is parallel to the front-rear direction of the main body of the device;

[0020] The plurality of position adjustment holes are spaced apart circumferentially along the third connector.

[0021] In one possible implementation, the spacing between adjacent position adjustment holes is equal along the circumferential direction of the third connector.

[0022] In one possible implementation, the connecting assembly further includes a universal connector having a receiving portion and a universal connecting portion. The receiving portion is connected to the side of the first connector facing the clamping member. The side of the receiving portion facing the clamping member has a receiving groove. The universal connecting portion is disposed in the receiving groove and is rotatably disposed within the receiving groove.

[0023] The end of the universal joint that is away from the receiving groove is connected to the side of the clamping member that faces the receiving part.

[0024] This application provides an arc-shaped pressing mechanism, which includes a device body, a suspension assembly, a fixing member, and a pressing member. The suspension assembly includes a suspension member. In the height direction of the device body, one end of the device body is a suspension end connected to the suspension member; the other end is a fixing end connected to the fixing member. The suspension member and the fixing member are located on opposite sides of the device body in the front-rear direction, and the fixing member is connected to a fixing device. The pressing member is located between the suspension member and the fixing member, on the same side as the fixing member. The device body is suspended from a platform by the suspension member. The fixing member provides tension. The device body rotates around the contact point between the suspension member and the platform, causing the pressing member to move in the direction of pressing the skin, thus pressing the skin. The device body, fixing member, and suspension member form a lever structure. Through the cooperation of the fixing member and the fixing device, the direction of the tension applied to the device body can be changed, and the angle between the suspension member and the platform can be adjusted synchronously using the lever structure. Adjusting the angle between the suspension component and the walkway changes the contact angle between the clamping component and the skin, allowing the arc-shaped clamping mechanism to adapt to different arc curvature positions. This ensures proper clamping at various arc curvature positions, guaranteeing a close fit between the skin and the frame, and further ensuring good flatness after welding. Furthermore, this mechanism has a simple structure, achieving arc-shaped clamping through the lever principle, resulting in simple operation and low cost. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the arc-shaped clamping mechanism provided in this application;

[0027] Figure 2Another structural schematic diagram of the arc-shaped clamping mechanism provided in this application;

[0028] Figure 3 Right view of the arc-shaped clamping mechanism provided in this application;

[0029] Figure 4 A front view of the arc-shaped clamping mechanism provided in this application;

[0030] Figure 5 Rear view of the arc-shaped clamping mechanism provided in this application;

[0031] Figure 6 A cross-sectional view of the suspension assembly of the arc-shaped clamping mechanism provided in this application.

[0032] Figure label:

[0033] 100 - Main body of the device; 101 - Suspension end; 102 - Fixed end;

[0034] 200 - Suspension assembly; 201 - Suspension component; 202 - Rolling element;

[0035] 300 - Fastener; 301 - Connector; 302 - Fixing part;

[0036] 400 - Clamping element; 401 - Arc-shaped clamping surface;

[0037] 500 - Connecting component; 501 - First connector; 502 - Second connector; 503 - Third connector; 5031 - Position adjustment hole; 504 - Fourth connector;

[0038] 600-Universal connector. Detailed Implementation

[0039] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0040] The terms “left,” “right,” “top,” “bottom,” “inner,” “outer,” etc. (if present) in the specification and claims of this application indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this application.

[0041] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0042] Special oversized / overweight vehicles are special vehicles designed specifically for transporting large, specialized equipment within standard cargo clearance limits in railway transportation. Their height and width often exceed Class I or Class II limits, making it impossible to use the modular assembly process of traditional rail vehicles. Therefore, special oversized / overweight vehicles are typically assembled with an integral frame and skin. However, due to limitations in tooling dimensions and factory space, a segmented skin approach has gradually been adopted. In this process, thin-plate pre-formed skins need to be hoisted into the frame using lifting equipment and then pressed firmly using a curved surface clamping mechanism to ensure complete fit between the segmented skins and the frame, guaranteeing the flatness and aesthetics after welding.

[0043] Existing clamping technologies mainly include two forms: hydraulic clamping block clamping and hydraulic section point clamping. Hydraulic clamping blocks use hydraulic cylinders to vertically or rotary push the forming blocks to clamp the curved surface. However, this method is costly and inflexible when hydraulic devices are installed on both sides of the entire length, and is only suitable for curved surfaces with small curvature changes. Furthermore, due to manufacturing deviations and height tolerances, inconsistent clamping positions lead to poor flatness after welding. Hydraulic section point clamping, on the other hand, uses multiple points on the entire curved surface, employing forming blocks as clamping platforms to ensure a close fit between the skin and the frame. However, this method also faces problems of high processing costs, poor flexibility and adaptability, and is highly dependent on platform accuracy, limiting its applicability.

[0044] Therefore, this application provides an arc-shaped pressing mechanism. Utilizing a walkway and lever principle, the main body of the device is suspended from the walkway by a suspension member in the height direction. The fixed end provides tension through a fixing member and a fixing device. The main body of the device rotates around the contact point between the suspension member and the walkway, causing the pressing member to move in the direction of pressing the skin, thus pressing the skin. By adjusting the direction of the tension provided by the fixing member, the angle between the suspension member and the walkway can be adjusted, further adjusting the contact angle between the pressing member and the skin, allowing the arc-shaped pressing mechanism to adapt to arc surfaces of different curvatures. This mechanism is simple in structure, low in cost, and can adapt to arc surfaces of arbitrary curvature, ensuring complete pressing of the skeleton skin and achieving good post-weld flatness.

[0045] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0046] For some embodiments of this application, please refer to Figure 1 and Figure 2 The arc-shaped clamping mechanism includes a device body 100, a suspension assembly 200, a fixing component 300, and a clamping component 400.

[0047] The main body 100 of the device has a suspension end 101 and a fixed end 102 in the height direction. Exemplarily, the main body 100 can be a frame structure, for example, a rectangular or trapezoidal frame welded from square tubing or I-beams. It can be a cantilever beam structure, for example, a single high-strength alloy beam. It can be a hinged parallelogram structure, for example, composed of two sets of parallel connecting rods hinged together. It can also be a reinforcing plate with stiffeners, a locally thickened composite plate, or a curved bending-resistant plate, etc.

[0048] The suspension assembly 200 includes a suspension member 201, which is connected to the suspension end 101. The main body of the device 100 is suspended on the walkway via the suspension member 201.

[0049] The fixing member 300 is connected to the fixed end 102, and the suspension member 201 and the fixing member 300 are located on opposite sides of the device body 100 in the front-rear direction. The device body 100, the suspension member 201, and the fixing member 300 form a lever structure. The fixing member 300 can be selectively connected to a fixing device, which is located on the side of the fixing member 300 opposite to the device body 100, and has a gap between the fixing device and the fixing member 300 in the front-rear direction. The fixing device is used to connect with the fixing member 300, and the fixing device provides tension to the device body 100 through the fixing member 300.

[0050] The clamping member 400 and the fixing member 300 are located on the same side of the device body 100 and between the suspension end 101 and the fixing end 102. They are connected to the device body 100. The end of the clamping member 400 that is away from the first connecting member 501 is an arc-shaped clamping surface 401, which abuts against the arc surface of the vehicle's frame skin.

[0051] Utilizing the lever principle, the main body 100 of the device is suspended on the walkway by the suspension member 201. The contact point between the suspension member 201 and the walkway is the suspension point, which is the fulcrum of the lever. The clamping member 400 is aligned with the skin to be clamped, which is the resistance point. The fixing member 300 is connected to the fixing device, and the fixing device provides tension to the fixing member 300, driving the main body 100 of the device to rotate around the suspension point. The main body 100 of the device drives the clamping member 400 to move in the direction of clamping the skin, so that the frame and the skin fit together.

[0052] For example, the fastener 300 may be a pull ring, a hook, a lifting lug, etc., and the fastening device may be a tensioner, a ground anchor, a hydraulic or pneumatic actuator, a slide rail with locking function, etc.

[0053] For example, the fastener 300 has a gap between itself and the fixing device in the front-rear direction of the device body 100. When the fastener 300 is a hook, the fixing device can be a ground anchor. The hook and the ground anchor are connected by a chain, and the chain can be tightened manually to provide tension to the hook.

[0054] The hook and the ground anchor can be connected by a chain, a lever hoist and a shackle. That is, the ground anchor is connected to the chain, the chain is connected to the lever hoist, and the lever hoist is connected to the hook through a shackle.

[0055] The chain is tightened by the lever hoist, which provides pulling force to the hook. The lever movement is activated, and the hook transmits the pulling force to the main body 100 of the device. The main body 100 of the device rotates around the suspension point, which drives the clamping member 400 to move in the direction of clamping the skin. The clamping member 400 converts the lever movement into pressure on the skin. The ground anchor provides a reaction force to prevent the entire system from moving.

[0056] For example, the hook and the ground anchor can also be connected by a hydraulic cylinder. The extension rod of the hydraulic cylinder is connected to the hook, and the other end of the hydraulic cylinder is connected to the ground anchor. The hydraulic cylinder acts as a power source and provides tension to the hook through the extension and retraction of the extension rod.

[0057] The suspension assembly 200 and the main body 100 of the device utilize the lever principle to convert the tension into the clamping force of the clamping member 400 on the skin. By changing the magnitude and direction of the tension, the angle between the suspension assembly 200 and the walkway can be adjusted, thereby adjusting the angle between the clamping member 400 and the clamping skin. The angle adjustment is simple, and the clamping member 400 can be applied to various curved skin surfaces. Furthermore, it generates a large output force with a small input force, achieving effective clamping within a limited operating space. The mechanism has a simple structure, reducing manufacturing and maintenance costs.

[0058] For some embodiments of this application, please refer to Figure 3 The fastener 300 has a connecting part 301 and a fixing part 302. The connecting part 301 is connected to the main body 100 of the device, and the fixing part 302 can be selectively hooked onto the fixing device.

[0059] For example, the fastener 300 is a hook, the connecting part 301 can be a screw, and the fixing part 302 can be an arc-shaped or semi-circular hook. The connecting part 301 and the fixing part 302 can be integrally formed or connected by welding. The device body 100 has a corresponding mounting hole, and the hook can be bolted to the device body 100 by the screw and the mounting hole.

[0060] In some embodiments of this application, the length of the suspension member 201 is greater than the width of the walkway, and the length direction of the suspension member 201 and the width direction of the walkway are both parallel to the front-back direction of the main body 100 of the device, so as to ensure that the suspension member 201 is stably suspended on the walkway and improve the safety of the arc surface pressing mechanism.

[0061] For some embodiments of this application, please refer to Figure 5 and Figure 6 The suspension assembly 200 also includes a rolling element 202, which is connected to the side of the suspension 201 facing the walkway and makes rolling contact with the walkway.

[0062] For example, the rolling element 202 can be a pulley, which is connected to the side of the suspension element 201 facing the platform via a mounting base, and the device body 100 can slide on the platform via the pulley.

[0063] Furthermore, the pulley is located at the contact point between the suspension component 201 and the walkway to avoid the pulley affecting the fulcrum of the lever system.

[0064] By using pulleys, the arc-shaped clamping mechanism can quickly move to the next clamping device, improving production efficiency and reducing labor intensity.

[0065] For some embodiments of this application, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The arc surface pressing mechanism also includes a connecting component 500, which includes a first connecting member 501. The first connecting member 501 is located between the suspension end 101 and the fixed end 102 of the device body 100. One end of the first connecting member 501 is connected to the pressing member 400, and the other end is movably connected to the device body 100. Specifically, the angle and height of the first connecting member 501 relative to the device body 100 can be adjusted, so that the pressing member 400 can press arc surfaces of different heights and curvatures.

[0066] For example, the device body 100 can be a rectangular frame structure. The first connecting member 501 is a crossbeam whose extension direction is perpendicular to the front-back direction of the device body 100. The crossbeam is located between the suspension end 101 and the fixed end 102 of the device body 100. One end of the crossbeam is connected to the clamping member 400, and the other end is movably connected to the device body 100. Specifically, the crossbeam and the device body 100 can be connected by a screw rod whose extension direction is parallel to the front-back direction of the device body 100. A nut seat is installed on the device body 100 for engaging with the screw rod. By rotating the screw rod, the screw... The female seat pushes the lead screw to move along the front-back direction of the device body 100, which in turn drives the crossbeam to move, thereby adjusting the height of the crossbeam relative to the device body 100. The end of the lead screw near the crossbeam is connected to the side of the crossbeam facing the device body 100 by a ball joint. Specifically, a spherical plain bearing is installed at the end of the lead screw near the crossbeam. The inner spherical surface of the spherical plain bearing is connected to the side of the crossbeam facing the device body 100, and the outer spherical surface is connected to the end of the lead screw near the crossbeam. The inner spherical surface can deflect relative to the outer spherical surface. Through the universal joint's omnidirectional characteristics, the crossbeam can be adjusted at its angle relative to the device body 100.

[0067] Preferably, a locking element is added. Since the ball joint itself cannot lock at an angle, the angle is locked by adding a locking element. For example, a locking sleeve and a locking nut are installed on the outer ring of the spherical plain bearing. When the locking nut is rotated, the locking sleeve retracts and locks the outer spherical surface of the spherical plain bearing, thereby achieving angle locking.

[0068] The first connector 501 is movably connected to the main body 100 of the device, which enables the clamping member 400 to further clamp at different heights, angles and curvatures, thereby improving the flexibility of the mechanism.

[0069] For some embodiments of this application, please refer to Figure 1 The connecting component 500 also includes a second connector 502, at least a portion of which is located on the side of the first connector 501 away from the clamping member 400, and the second connector 502 is connected between the first connector 501 and the device body 100, and the second connector 502 is a telescopic structure.

[0070] For example, the second connector 502 can be a telescopic beam, which includes an inner sleeve and an outer sleeve. The inner sleeve is located inside the outer sleeve and slides along the inner wall of the outer sleeve. The length of the telescopic beam is adjusted by sliding. The telescopic beam extends in the direction of the line connecting the first connector 501 and the device body 100. When the telescopic beam extends, the first connector 501 moves away from the device body 100. When the telescopic beam retracts, the first connector 501 moves closer to the device body 100. The end of the outer sleeve of the telescopic beam that is close to the device body 100 is connected to the device body 100, and the end of the inner sleeve that is away from the device body 100 is connected to the side of the first connector 501 that is away from the clamping member 400. For example, when the first connector 501 is a crossbeam, the crossbeam is connected to the device body 100 through a spherical joint bearing and the telescopic beam. The extension direction of the telescopic beam can be parallel to the front-back direction of the device body 100. The height of the crossbeam relative to the device body 100 is adjusted by the telescopic beam, and the angle relative to the device body 100 is adjusted by the spherical joint bearing.

[0071] By extending and retracting the second connector 502, the height of the second connector 502 relative to the main body 100 of the device is changed, thereby increasing the adjustable range of the height of the clamping member 400 and further improving the flexibility of the mechanism in height adjustment.

[0072] For some embodiments of this application, please refer to Figure 2 and Figure 3 The connecting assembly 500 also includes a third connector 503 and a fourth connector 504. The third connector 503 is located between the second connector 502 and the device body 100 and is connected to the device body 100. The third connector 503 has a plurality of position adjustment holes 5031 and a partition between adjacent position adjustment holes 5031. The fourth connector 504 passes through one of the position adjustment holes 5031 and connects the third connector 503 and the second connector 502.

[0073] For example, the second connector 502 is a telescopic beam, the third connector 503 is a connecting plate with multiple position adjustment holes 5031, and the fourth connector 504 can be a pin. The surface of the connecting plate can be welded to the device body 100. The outer sleeve of the telescopic beam is detachably bolted to the side of the connecting plate opposite to the device body 100 by bolts. The pin passes through the position adjustment holes 5031, connecting the outer sleeve of the telescopic beam opposite to the device body 100 to the side of the connecting plate opposite to the device body 100. The inner sleeve of the telescopic beam is connected to the side of the first connector 501 facing the device body 100. The clamping member 400 is connected to the side of the first connector 501 opposite to the device body 100. The first connector 501 adjusts the height of the clamping member 400 by the telescopic beam. The angle of contact between the compression member and the skin is adjusted by the connection between the telescopic beam and different position adjustment holes 5031.

[0074] The shape of the connecting plate is not limited, nor is the arrangement of the position adjustment holes 5031, so that the telescopic beam and the connecting plate can be detachably connected, and the angle of the telescopic beam can be changed through the position adjustment holes 5031.

[0075] The gap between adjacent position adjustment holes 5031 helps to maintain the stability and strength of the third connector 503. Through the position adjustment holes 5031 of the third connector 503, the angle of the second connector 502 relative to the device body 100 can be changed, thereby changing the adjustable range of the contact angle between the clamping member 400 and the skin, further improving the flexibility of the mechanism in angle adjustment.

[0076] For some embodiments of this application, please refer to Figure 3 The third connector 503 is an arc-shaped plate with its surface parallel to the front-back direction of the main body 100 of the device. Multiple position adjustment holes 5031 are spaced apart along the circumference of the third connector 503.

[0077] For example, the outer sleeve of the telescopic beam is detachably bolted to the surface of the arc-shaped plate at one end near the main body 100 of the device by bolts. Multiple position adjustment holes 5031 are spaced apart around the circumference of the arc-shaped plate. A pin passes through the position adjustment hole 5031 and connects the end of the outer sleeve of the telescopic beam away from the main body 100 of the device and the surface of the connecting plate. The circumferentially spaced position adjustment holes 5031 allow the telescopic beam to be rotated around the connection point between the end of the outer sleeve of the telescopic beam near the main body 100 of the device and the arc-shaped plate, so that the telescopic beam can be adjusted relative to the main body 100 of the device, thereby changing the adjustable range of the contact angle between the clamping member 400 and the skin. The spacing between adjacent position adjustment holes 5031 is not limited. The circumferential arrangement of position adjustment holes 5031 makes the adjustment process more intuitive and simple. Operators can quickly identify and select the appropriate position adjustment hole 5031 for adjustment without complicated measurement and calculation.

[0078] For some embodiments of this application, please refer to Figure 3 Along the circumference of the third connector 503, the spacing between adjacent position adjustment holes 5031 is equal. For example, the arc-shaped plate has 15-degree intervals of position adjustment holes 5031 evenly distributed circumferentially within a semicircumference. This equal spacing provides an equidistant adjustment option, allowing the operator to precisely adjust the position of the second connector 502 in fixed increments. This ensures that the changes resulting from each adjustment are predictable and consistent, helping to maintain system stability and repeatability even when multiple adjustments are required.

[0079] For some embodiments of this application, please refer to Figure 1 The connecting assembly 500 also includes a universal connector 600, which has a receiving portion and a universal connecting portion. The receiving portion is connected to the side of the first connecting member 501 facing the clamping member 400. The side of the receiving portion facing the clamping member 400 has a receiving groove. The universal connecting portion is disposed in the receiving groove and can be rotatably disposed in the receiving groove.

[0080] The end of the universal joint that is away from the receiving groove is connected to the side of the clamping member 400 that faces the receiving groove.

[0081] For example, the receiving portion of the universal connector 600 can be a "U"-shaped groove structure, the receiving groove is a "U"-shaped groove, and the side of the receiving portion away from the "U"-shaped groove is connected to the side of the first connector 501 facing the clamping member 400; the universal connector 301 can be a ball head, the ball head is embedded in the "U"-shaped groove, and the ball head can rotate 180 degrees along the opening of the "U"-shaped groove; the side of the ball head away from the "U"-shaped groove can be welded to the side of the clamping member 400 facing the receiving portion, or the side of the ball head away from the "U"-shaped groove has a screw, which can be bolted to the side of the clamping member 400 facing the receiving portion.

[0082] The universal connector 600 and the clamping member 400 can further increase the clamping angle with the skin, thereby improving the flexibility of the mechanism.

[0083] This mechanism can adjust the angle and height of the clamping member 400 by changing the angle between the suspension member 201 and the platform, extending and retracting the second connector 502, adjusting the angle of the third connector 503, and using the universal connector 600. This ensures that the clamping member 400 has a wider clamping range and can be applied to more skin surfaces with different curvatures, ensuring a tight fit between the skin and the frame.

[0084] In addition, the connection between one end of the second connector 502 and the side of the first connector 501 facing the device body 100, the connection between the other end of the second connector 502 and the third connector 503, and the connection between the clamping member 400 and the side of the first connector 501 facing the clamping member 400 can all be detachable. The clamping member 400 and the second connector 502 of different lengths can be replaced according to the contours and clamping positions of different vehicle models, so that the arc-shaped clamping mechanism can adapt to more vehicle models and has greater flexibility.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An arc-shaped pressing mechanism, characterized in that, include: The main body of the device (100) has a suspension end (101) and a fixed end (102) in the height direction. The suspension assembly (200) includes a suspension member (201) connected to the suspension end (101) and the suspension member (201) is configured to be suspended on the walkway; A fastener (300) is connected to the fixed end (102), and the fastener (300) and the suspension member (201) are located on opposite sides of the device body (100) in the front-rear direction; the fastener (300) is configured to be selectively connected to a fastening device, the fastening device being located on the side of the fastener (300) away from the device body (100), and the fastening device having a gap between itself and the device body (100) in the front-rear direction; A clamping member (400) and a fixing member (300) are located on the same side of the device body (100), and the clamping member (400) is located between the suspension end (101) and the fixing end (102) and connected to the device body (100); the end of the clamping member (400) facing away from the first connecting member (501) is an arc-shaped clamping surface (401), and the arc-shaped clamping surface (401) is constructed to abut against the arc surface of the vehicle's frame skin.

2. The arc-shaped pressing mechanism according to claim 1, characterized in that, The fastener (300) has a connecting part (301) and a fixing part (302). The connecting part (301) is connected to the main body (100) of the device, and the fixing part (302) can be selectively hooked onto the fixing device.

3. The arc-shaped pressing mechanism according to claim 1, characterized in that, The length of the suspension member (201) is greater than the width of the walkway, and the length direction of the suspension member (201) and the width direction of the walkway are both parallel to the front-back direction of the main body of the device (100).

4. The arc-shaped pressing mechanism according to claim 2, characterized in that, The suspension assembly (200) further includes a rolling element (202) connected to the side of the suspension element (201) facing the walkway and in rolling contact with the walkway.

5. The arc-shaped pressing mechanism according to any one of claims 1-4, characterized in that, It also includes a connecting component (500), which includes a first connector (501) located between the suspension end (101) and the fixed end (102) of the device body (100); One end of the first connector (501) is connected to the clamping member (400), and the other end is movably connected to the device body (100).

6. The arc-shaped pressing mechanism according to claim 5, characterized in that, The connecting assembly (500) further includes a second connector (502), at least a portion of which is located on the side of the first connector (501) away from the clamping member (400), and the second connector (502) is connected between the first connector (501) and the device body (100), and the second connector (502) is a telescopic structure.

7. The arc-shaped pressing mechanism according to claim 6, characterized in that, The connecting assembly (500) further includes a third connector (503) and a fourth connector (504), the third connector (503) being located between the second connector (502) and the device body (100), and the third connector (503) being connected to the device body (100); The third connector (503) has a plurality of position adjustment holes (5031), with a gap between adjacent position adjustment holes (5031), and the fourth connector (504) passes through one of the position adjustment holes (5031) to connect the third connector (503) and the second connector (502).

8. The arc-shaped pressing mechanism according to claim 7, characterized in that, The third connector (503) is an arc-shaped plate, and the surface of the arc-shaped plate is parallel to the front-back direction of the main body of the device (100); The plurality of position adjustment holes (5031) are arranged at circumferential intervals along the third connector (503).

9. The arc-shaped pressing mechanism according to claim 8, characterized in that, Along the circumferential direction of the third connector (503), the intervals between adjacent position adjustment holes (5031) are equal.

10. The arc-shaped pressing mechanism according to claim 5, characterized in that, The connecting assembly (500) further includes a universal connector (600), which has a receiving portion and a universal connecting portion. The receiving portion is connected to the side of the first connector (501) facing the clamping member (400). The receiving portion has a receiving groove on the side facing the clamping member (400). The universal connecting portion is disposed in the receiving groove and can be rotatably disposed in the receiving groove. The end of the universal joint opposite to the receiving groove is connected to the side of the clamping member (400) facing the receiving part.

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