Auxiliary frame clamp

Abstract

The auxiliary frame clamp comprises two supporting point positions, two first clamping point positions and two first clamping parts corresponding to the first clamping point positions, the supporting point positions and the first clamping point positions are symmetrically arranged, each first clamping point position comprises a groove-shaped arc opening with an upward opening, and the groove-shaped arc openings are symmetrically arranged. The center of the auxiliary frame is arranged at the symmetric center of the supporting point position and the first clamping point position, the first clamping component comprises a clamping mechanism and a synchronous positioning mechanism, the clamping mechanism is symmetrically arranged relative to the center of the auxiliary frame, and the clamping mechanism comprises a fixed arc opening with a downward opening. The two ends of the auxiliary frame are synchronously fixed, the stress of the two ends of the auxiliary frame is relatively balanced, and the auxiliary frame hardly moves or the moving distance is very small during clamping, so that the positioning is relatively more accurate, the quality of the auxiliary frame after subsequent processing is ensured, the positioning accuracy is favorably improved, and the defective rate is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts manufacturing, and in particular to a subframe clamp. Background Art

[0002] The subframe is a safety component that reinforces the car body. Existing subframes generally start from the center of the front / body and extend symmetrically to both sides to form anti-collision frames at the front and rear of the car body, thereby enhancing safety.

[0003] The specific shape of the subframe needs to be adapted to the vehicle model. It generally has an arc-shaped structure and is symmetrical on both sides. Therefore, during the subframe production process, the subframe needs to be clamped and fixed from both sides. Since the shape of the subframe varies according to the vehicle model, the corresponding welding equipment is generally universal. That is, in addition to welding one or a certain type of subframe, the welding equipment may also need to weld subframes of other specifications or even other products. Therefore, the subframe clamp needs to have a certain degree of versatility and is generally not set as a dedicated clamp. For this reason, a multi-point fixed positioning method can be used to clamp the subframe during fixation. For example, support points are set below the middle of the subframe, and clamping points are set on both sides of the subframe. The middle of the subframe is supported upward by the support points, and the two sides of the subframe are clamped and fixed downward by the clamping points, thereby ensuring stable clamping of the subframe. When common clamping equipment is used to fix the above subframe, the subframe is generally pre-installed to the initial positions of the support points and clamping points, and then the clamping equipment begins to fix it. In this process, since the clamps are not dedicated, the initial positions of the clamping points on both sides of the subframe only have a simple limiting effect. If the clamps on both sides act on the two ends of the subframe successively, it may cause the side that acts first to shift. In this way, after fixation, the overall fixation will shift, thereby affecting subsequent production processes. Summary of the Invention

[0004] The purpose of this application is to provide a subframe clamp that is convenient for accurate positioning.

[0005] To achieve the above objectives, the technical solution adopted in the present application is: a subframe clamp, including a support point, a first clamping point and a first clamping component corresponding to the first clamping point, the support point and the first clamping point are symmetrically arranged at two locations, the first clamping point includes a groove-shaped arc opening opening upward, the center of the subframe is arranged at the symmetrical center of the support point and the first clamping point, the middle part of the subframe contacts the support point during pre-installation, the two ends of the subframe are respectively arranged in the groove-shaped arc openings of the first clamping points at both ends for preliminary positioning, the first clamping component includes a clamping mechanism and a synchronous positioning mechanism, the clamping mechanism is symmetrically arranged about the center of the subframe, the clamping mechanism includes a fixed arc opening opening downward, and the synchronous positioning mechanism is suitable for making the fixed arc openings on both sides act on the two ends of the subframe at the same time, and then cooperate with the groove-shaped arc opening to fix the subframe.

[0006] Preferably, the first clamping component further includes a driving mechanism, which includes a rotatably arranged clamping portion, and the bottom of the clamping portion forms the fixed arc opening; the driving mechanism drives the clamping portion to rotate, and when it approaches the groove-shaped arc opening, the fixed arc opening is clamped into the end of the sub-frame to cooperate and be fixed with the groove-shaped arc opening.

[0007] As a preferred embodiment, the synchronous positioning mechanism includes a limiting part, an avoidance part and a rotating rod, the limiting part and the avoidance part are provided at both ends of the rotating rod and are symmetrically distributed about the center of the rotating rod, the two ends of the rotating rod respectively correspond to the two clamping parts on both sides, the limiting part is used to limit the rotation of the rotating rod, the avoidance part is provided along the radial direction of the rotating rod and slides within a set range; the clamping part on the first side acts on the avoidance part to move it when rotating to clamp, and the avoidance part acts on the limiting part to move it when moving, until the avoidance part moves to When the limiting parts on both sides release the restrictions on the rotating rod, the clamping parts on both sides act on the avoidance part at the same time, so that the avoidance part and the rotating rod rotate and avoid along the circumference of the rotating rod, thereby making the fixed arc openings on both sides clamp the two ends of the sub-frame at the same time.

[0008] As a preferred embodiment, a fixing portion is provided in the middle of the rotating rod, and the rotating rod is horizontally installed below the clamping portion through the fixing portion; fixing sleeves are fixedly installed on both sides of the rotating rod, and the inner cavity radius of the fixing sleeve is larger than the outer wall radius of the rotating rod; the fixing portion is fixedly installed with a fixing rod in parallel directly below the rotating rod, and the two limiting portions are respectively vertically inserted on both sides of the fixing rod, and the fixing sleeve is provided with through holes passing through the upper and lower parts, and the through holes pass through the rotating rod up and down, and the avoidance portion passes through the through holes, and the avoidance portion is limited to move within the range below the rotating rod in the inner cavity of the fixing sleeve, and an elastic member is provided at the bottom of the limiting portion, and the elastic member causes the limiting portion to be inserted into the through hole of the fixing sleeve in the initial state to abut against the bottom of the avoidance portion and raise it.

[0009] As a preferred embodiment, a locking portion is formed on the outer wall of the avoidance portion, and the outer diameter of the locking portion is larger than the inner diameter of the through hole, so that the avoidance portion is restricted to slide up and down in the internal space of the fixed sleeve below the rotating rod; when the bottom of the locking portion and the bottom of the inner cavity of the fixed sleeve are abutted against each other, the bottom surface of the avoidance portion is flush with the bottom surface of the through hole, so that the limiting portion completely leaves the through hole.

[0010] As a preference, a fastener is integrally provided on the outer side of the fixing sleeve, and the fastener and the end of the rotating rod are fixedly installed; a limiting block is provided at the bottom of the limiting portion, and the elastic member is configured as a spring, and the spring is provided between the fixing rod and the top surface of the limiting block.

[0011] As a preference, two clamping columns are spaced apart at the bottom of the clamping portion, and the fixed arc is formed between the two clamping columns. The top of the groove-shaped arc is provided with an inclined surface. During the rotation and clamping process, the clamping column first abuts against the top of the inclined surface, and when the rotation continues, the clamping column moves downward along the inclined surface.

[0012] Preferably, the sub-frame fixture further comprises a workbench, two support points are symmetrically arranged on both sides of the workbench, and the sub-frame is initially placed on the two support points.

[0013] As a preference, a second clamping component is further provided in the middle of the two supporting points, and the second clamping component includes two slides and two clamping heads, and the two clamping heads are respectively fixedly mounted on the two slides, and the two slides are respectively provided with two cylinders for driving the two clamping heads to move closer to or away from each other to clamp or release the middle of the sub-frame; the two clamping mechanisms are both arranged on both sides of the same slide, and the corresponding synchronous positioning mechanism is arranged on the slide on that side; the cylinder enables the clamping head to pre-fix the middle of the sub-frame, and then the two clamping mechanisms start to drive the clamping parts to rotate and synchronously clamp and fix the two ends of the sub-frame.

[0014] As a preference, the fixing portion further comprises a fixing frame arranged at the bottom, and the height of the fixing frame is adjustable to adjust the initial distance between the avoidance portion and the clamping portion.

[0015] As a preference, the clamping mechanism further includes a driving part, a fixed platform and a rotating part, the fixed platform is fixed on the workbench, the rotating part is rotatably arranged on both sides of the fixed platform, the driving part is suitable for driving the rotating part to rotate, and the clamping part is installed on the rotating part.

[0016] Compared with the prior art, the present invention has the following advantages: By fixing both ends of the subframe simultaneously, the forces on both ends of the subframe are relatively balanced. The subframe hardly moves or moves a very small distance during clamping, so the positioning is relatively more accurate, thereby ensuring the quality of the subframe after subsequent processing, helping to improve positioning accuracy and reduce the defective rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0018] Figure 2 yes Figure 1 Schematic diagram of the middle part of the structure from another perspective.

[0019] Figure 3 yes Figure 2 Schematic diagram of part of the structure from another perspective.

[0020] Figure 4 yes Figure 3 A magnified view of the middle structure.

[0021] Figure 5 It is a schematic diagram of the synchronous positioning mechanism.

[0022] Figure 6 It is a cross-sectional view of part of the structure of the synchronous positioning mechanism.

[0023] Figure 7 is Figure 6 Schematic diagram of the working status when the foundation continues to clamp.

[0024] Figure 8 yes Figure 7 Schematic diagram of the working status when the foundation continues to clamp.

[0025] Figure 9 yes Figure 6 The corresponding working state diagram of the first clamping component.

[0026] Figure 10 yes Figure 7 The corresponding working state diagram of the first clamping component.

[0027] Figure 11 yes Figure 8 The corresponding working state diagram of the first clamping component.

[0028] In the figure: 1. workbench; 21. first clamping mechanism; 22. second clamping mechanism; 3. second clamping component; 4. synchronous positioning mechanism; 41. rotating rod; 42. fixing rod; 43. fixing portion; 44. fixing sleeve; 45. limiting portion; 46. fastener; 47. avoidance portion; 48. spring; 49. locking portion; 5. slide; 61. first end of subframe; 62. second end of subframe; 7. clamping portion; 8. first clamping point; 9. rotating portion. DETAILED DESCRIPTION

[0029] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating the orientation and position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0031] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0032] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0033] Example: Reference Figures 1 to 11 This application mainly proposes a subframe clamp for clamping and fixing the subframe. The subframe is generally a symmetrical structure, with the middle corresponding to the middle of the front or rear of the vehicle and the two ends corresponding to the two sides of the front or rear of the vehicle, so as to absorb the collision energy to a large extent, thereby reducing the damage to the occupants and the main body of the frame. The subframe is fixed and formed by welding, and generally includes a horizontal main beam and a vertical longitudinal beam. The main beam and the longitudinal beam are welded to form the main body of the subframe. This application mainly clamps the main beam, and after clamping, the welding equipment welds the longitudinal beam to the main beam to complete the welding of the subframe. Since this application mainly clamps the main beam accurately and does not involve the specific welding structure of the longitudinal beam, the main beam of the subsequent subframe is collectively referred to as the subframe, and the clamping and fixing of the subframe is the clamping and fixing of the main beam of the subframe. Due to the sheet metal strength, streamlined design, and appearance-based design of the vehicle body, the subframe needs to be adapted and adjusted according to different vehicle models. Therefore, the sizes of the subframes vary. Therefore, the clamps used for the subframes need to be universal adjustable clamps or dedicated clamps corresponding to the subframes.

[0034] This sub-frame clamp mainly provides a universal clamp, which mainly includes a support point, a first clamping point 8 and a first clamping part 7 corresponding to the first clamping point 8. The support point and the first clamping point 8 are symmetrically arranged at two locations. The first clamping point 8 includes a groove-shaped arc opening with an upward opening. The center of the sub-frame is set at the symmetrical center of the support point and the first clamping point 8. During pre-installation, the middle part (the middle part) of the sub-frame contacts the support point, and the two ends of the sub-frame are respectively set in the groove-shaped arc openings of the first clamping point 8 at both ends for preliminary positioning. The groove-shaped arc opening can cope with sub-frames of different specifications. Both the upper and lower parts are groove-shaped designs. The end parts of frames of different specifications are placed in the groove-shaped arc opening at the bottom. The groove at the top presses down the top of the sub-frame end. The two can be matched to fix the sub-frame.

[0035] However, the design of clamping the subframe in the middle by only two slots has the following drawbacks during the actual clamping process: Because the subframe adapts to the design of the vehicle body, the subframe usually has a curved arc at its ends. After the subframe is placed at a clamping point, such as a support point, the support in the middle of the subframe is relatively flat, and the corresponding subframe end is clamped by the first clamping point 8 in conjunction with the clamping mechanism. However, the subframe end is generally not in a horizontal state, so during clamping, the clamping force is difficult to be completely vertical, and the component of the force in the vertical direction of clamping will cause the subframe to be offset. The offset problem of fixed-size subframes can be improved by adjusting the clamping points. However, subframes of different sizes have different arcs and lengths. Therefore, when fixing the ends, if both sides are not fixed simultaneously, the end that is fixed first will easily deviate to the other side during clamping. At this time, when the other side is clamped again, the fixed position of the subframe will be offset.

[0036] To address the issue of asynchronous clamping on both sides, the first clamping portion 7 of the subframe clamp of the present application includes a clamping mechanism and a synchronous positioning mechanism 4. The clamping mechanisms are symmetrically arranged about the center of the subframe and are used to clamp the two ends of the subframe. The clamping mechanism includes a downward-opening fixed arc, which cooperates with the groove-shaped arc to complete the fixation. By fixing the two ends of the subframe synchronously, the forces on both ends of the subframe are relatively balanced. During clamping, the subframe hardly moves or moves a very small distance, so the positioning is relatively more accurate, thereby ensuring the quality of the subframe after subsequent processing.

[0037] like Figure 4 、 Figure 9 As shown, the first clamping member 7 further includes a driving mechanism. The clamping mechanism includes a rotatable clamping member 7, with a fixed arc formed at the bottom of the clamping member 7. The driving mechanism drives the clamping member 7 to rotate. When the clamping member 7 approaches the slotted arc, the fixed arc engages with the top of the end of the subframe to securely engage the slotted arc. The driving mechanism can be a motor or other rotationally driven device, and the specific rotation principle is not detailed here.

[0038] like Figure 9 The clamping mechanism also includes a driving part, a fixed platform and a rotating part 9. The fixed platform is fixed on the workbench 1. The rotating part 9 is rotatably arranged on both sides of the fixed platform. The driving part is suitable for driving the rotating part 9 to rotate. The clamping part 7 is installed on the rotating part 9. The driving part can be selected from a motor or other device that is easy to be electrically controlled according to needs. Figure 1 As shown, two locations are provided at the two ends of the sub-frame, namely a first clamping mechanism 21 and a second clamping mechanism 22 , which clamp the first end 61 and the second end 62 of the sub-frame respectively.

[0039] like Figure 3 、 Figure 4As shown, two clamping columns are arranged at intervals at the bottom of the clamping part 7, and a fixed arc is formed between the two clamping columns. The top of the groove arc is provided with an inclined surface. During the process of rotating and clamping, the clamping column first abuts against the top of the inclined surface, and when the rotation continues, the clamping column moves down along the inclined surface. The inclined surface is arranged in this way. Since the clamping part 7 is matched with the groove arc by rotating, and the fixed arc generally does not deform to avoid it, after the inclined surface is provided, Figure 4 If the subframe ends shown are narrow, the clamping portion 7 can continue to clamp downward, thus adapting to smaller subframes. For larger subframes, a portion of the subframe's outer contour rests within the bottom grooved arc, providing support. Subsequently, the top clamping portion and the fixed arc provide direct pressure, achieving clamping and securing. In this case, the clamping post does not contact the inclined surface. However, if the subframe ends are narrow, the clamping post must engage a relatively low point on the inclined surface to secure the subframe end.

[0040] The synchronous positioning mechanism 4 is suitable for making the clamping parts and the fixed arc mouth on both sides act on the two ends of the sub-frame at the same time, and then cooperate with the groove-shaped arc mouth to fix the sub-frame. The function of the synchronous positioning mechanism 4 is to adjust the two clamping parts 7 with different clamping progress when clamping, so that the clamping part 7 with faster progress is paused first, and after the clamping part 7 behind reaches the same position, the clamping parts 7 on both sides rotate at the same time, so that the fixed arc mouth presses the end of the sub-frame, thereby completing the fixation of the sub-frame. The synchronous positioning mechanism 4 allows the suspension of the clamping part 7 to be achieved by electrical control on the one hand, and by mechanical structure on the other hand. Therefore, two preferred implementation plans of the synchronous positioning mechanism 4 are proposed below.

[0041] (1) Reference for the first option Figure 5 The synchronous positioning mechanism 4 includes a limiting portion 45, an avoidance portion 47 and a rotating rod 41. The limiting portion 45 and the avoidance portion 47 are provided at both ends of the rotating rod 41 and are symmetrically distributed about the center of the rotating rod 41. The two ends of the rotating rod 41 correspond to the two clamping portions 7 on both sides. The limiting portion 45 is used to limit the rotation of the rotating rod 41. The avoidance portion 47 is provided along the radial direction of the rotating rod 41 and slides within a set range. The radial arrangement of the avoidance portion 47 along the rotating rod 41 can be referred to. Figure 5 As shown, the rotating rod 41 is installed horizontally, and the avoiding portion 47 is vertically inserted into the rotating rod 41. The avoiding portion 47 needs to interact with the clamping portion, so it is arranged on the side facing the clamping portion 7, that is, upward.

[0042] The middle part of the rotating rod 41 is provided with a fixing portion 43, and the rotating rod 41 is horizontally installed below the clamping portion 7 through the fixing portion 43. Figure 4 and Figure 5 The horizontally mounted rotating rod 41 is more likely to form a symmetrical structure corresponding to the clamping parts 7 on both sides.

[0043] like Figure 4 As shown, a fixing sleeve 44 is fixedly installed on both sides of the rotating rod 41, and the inner cavity radius of the fixing sleeve 44 is larger than the outer wall radius of the rotating rod 41. A preferred fixing scheme is that a fastener 46 is integrally provided on the outer side of the fixing sleeve 44, and the fastener 46 and the end of the rotating rod 41 are fixedly installed.

[0044] In order to facilitate the positioning and installation of the limiting portion 45, as shown in FIG. Figure 5 、 Figure 6 The fixing portion 43 is fixedly mounted parallel to the fixing rod 42 just below the rotating rod 41. The two limiting portions 45 are respectively inserted vertically on both sides of the fixing rod 42. The fixing sleeve 44 is provided with a through hole extending vertically through the rotating rod 41 (refer to FIG. Figure 6 ), the escape portion 47 passes through the through-hole and is restricted in its movement within the inner cavity of the fixed sleeve 44, below the rotating rod 41. An elastic member is provided at the bottom of the limiting portion 45. The elastic member allows the limiting portion to initially be inserted into the through-hole of the fixed sleeve 44, thereby abutting against the bottom of the escape portion 47 and causing it to rise. A limiting block is provided at the bottom of the limiting portion 45. The elastic member is configured as a spring 48, which is disposed between the fixed rod 42 and the top surface of the limiting block.

[0045] To facilitate the installation and positioning of the escape portion 47, a retaining portion 49 is formed on its outer wall. The outer diameter of retaining portion 49 is larger than the inner diameter of the through-hole, restricting the escape portion 47 from sliding up and down within the interior space of the fixing sleeve 44, beneath the rotating rod 41. When the bottom of retaining portion 49 abuts the bottom of the inner cavity of the fixing sleeve 44, the bottom surface of the escape portion 47 is flush with the bottom surface of the through-hole, allowing the restricting portion 45 to completely clear the through-hole. The primary function of retaining portion 49 is to ensure that, at its maximum displacement, the bottom of the escape portion 47 is aligned with the bottom of the fixing sleeve 44, allowing the restricting portion 45 to completely clear the fixing sleeve 44 and release the restriction imposed by the restricting portion 45 on the rotating rod 41. In practice, if the bottom of the escape portion 47 protrudes from the through-hole of the fixing sleeve 44, the restricting portion 45 can completely clear the fixing sleeve 44. However, when the rotating rod 41 is rotated and reset, the protruding escape portion 47 interferes with the restricting portion 45, making subsequent reset operations more difficult and hindering ease of operation.

[0046] For the convenience of subsequent use, after clamping, the limiting portion 45 leaves and is staggered with the through hole of the fixing sleeve 44 due to the rotation of the rotating rod 41. The automatic reset can be achieved by adding a torsion spring to the rotating rod 41 so that the rotating rod 41 can be restored by the torsion spring after being free from other external forces. Figure 8 The status is restored to Figure 7 state, and then recover Figure 6 Of course, when there is no automatic reset structure such as a torsion spring, it can be manually reset after each use to facilitate next use.

[0047] The clamping portion 7 rotates to move the avoidance portion 47, so that the restriction portion 45 releases the restriction on the rotation of the rotating rod 41. Figures 6 to 11 .

[0048] like Figure 6 As shown, the initial state of the limiting portion 45 is to limit the rotation of the rotating rod 41. At this time, the top of the limiting portion 45 is inserted into the through hole at the bottom of the fixing sleeve 44 due to the action of the elastic member. At this time, the avoidance portion 47 is also pushed upward. At this time, the rotating rod 41 cannot rotate. Figure 7 As shown, the steps for releasing the restriction are: when the clamping portion 7 rotates to clamp, it acts on the avoidance portion 47 to move the avoidance portion 47 downward; when the avoidance portion 47 moves, it acts on the limiting portion 45 to move the limiting portion 45 until the avoidance portion 47 moves to its maximum displacement, and the limiting portion 45 moves to release the restriction on that side of the rotating rod 41, and the restriction on that side is released; however, at this time, the clamping portion 7 on the other side still maintains the restriction on the rotating rod 41, so the rotating rod 41 still cannot rotate. At this time, the avoidance portion 47 moves to the limit and cannot continue to move. At the same time, the rotating rod 41 cannot rotate, so the avoidance portion 47 will abut against the clamping portion 7 on the first side, thereby stopping the clamping portion 7 on the first side (that is, the clamping portion 7 on the side that is clamped first) from rotating.

[0049] like Figure 8 As shown, when the clamping portion 7 on the other side also starts to clamp, and the limiting portions 45 on both sides release the restriction on the rotating rod 41, the clamping portions 7 on both sides act on the avoidance portion 47 at the same time. At this time, the restrictions on both sides of the rotating rod 41 are released, so it can rotate. At this time, the clamping portions 7 on both sides continue to drive the rotation. At this time, the force acting on the avoidance portion 47 no longer allows the avoidance portion 47 to move, as shown in FIG. Figure 8 As shown, when the clamping portion 7 continues to interact with the avoidance portion 47, the avoidance portion 47 and the rotating rod 41 rotate together as a whole, so that the avoidance portion 47 and the rotating rod 41 rotate and avoid along the circumference of the rotating rod 41, so that the clamping portion 7 can continue to rotate and clamp, and then the fixed arc openings on both sides simultaneously clamp the top of the two ends of the subframe. In order to facilitate the rotation of the avoidance portion 47 after the clamping portion 7 and the avoidance portion 47 interact, the top of the avoidance portion 47 can be set to a spherical shape to facilitate guidance.

[0050] When resetting, the rotating rod 41 rotates back to the initial position. Due to the setting of the locking portion 49 on the avoidance portion 47, the avoidance portion 47 is now located at its maximum displacement position, but at the same time does not protrude from the fixing sleeve 44. Therefore, the avoidance portion 47 will not interfere with the limiting portion 45 during rotation. Figure 7 As shown, the elastic member causes the limiting portion 45 to move upward, thereby restoring Figure 6 As shown in the figure, the avoidance portion 47 and the limiting portion 45 are both rod-shaped to facilitate sliding. Figures 6 to 8That is, moving up and down.

[0051] like Figure 1 As shown, the subframe fixture also includes a workbench 1, with two support points symmetrically arranged on either side of the workbench 1. The subframe is initially placed on the two support points. A second clamping component 3 is also provided in the middle of the two support points. The second clamping component 3 includes two slides 5 and two clamping heads. The two clamping heads are fixedly mounted on the two slides, and the two slides 5 are respectively provided with two cylinders for driving the two clamping heads to move closer to or away from each other to clamp or release the middle of the subframe. The two clamping mechanisms are both provided on both sides of the same slide 5, and the corresponding synchronous positioning mechanism 4 is provided on the slide 5 on that side. The cylinders cause the clamping heads to pre-fix the middle of the subframe, and then the two clamping mechanisms begin to drive the clamping parts 7 to rotate and synchronously clamp and fix the two ends of the subframe. The bottom of the fixed portion 43 can be provided with a fixed bracket to securely mount it to the slide 5. The avoidance portion 47 is not connected to the clamping portion 7. Therefore, as long as the avoidance portion 47 can interact with the avoidance portion 47 in its initial state and when the clamping portion 7 rotates, the avoidance portion 47, the limiting portion 45, and the rotating rod 41 can achieve a corresponding synchronization effect. According to actual needs, the installation height of the rotating rod 41 can be adjusted to adjust the initial position of the avoidance portion 47. Such adjustment can adjust the clamping portion 7 to interact with the avoidance portion 47 at the appropriate time. This height adjustment can be achieved by providing a retractable fixed bracket below the fixed portion 43. In practice, the closer the contact time between the two and the time of clamping is completed, the better the synchronization effect of the synchronous positioning mechanism 4. However, the avoidance portion 47 needs to have sufficient travel to synchronize the two clamping portions 7 on both sides. Therefore, after the rotating rod 41 is installed, the avoidance portion 47 should not be too close to the clamping position. The actual position can be adaptively adjusted according to the specific installation and design. Although the slide 5 can slide, it needs to move toward the center when clamping so that the second clamping component 3 can pre-fix the sub-frame. Therefore, the sliding of the slide 5 does not actually affect the function of the synchronous positioning mechanism 4.

[0052] (2) The second solution, in which the synchronous positioning mechanism 4 can also be set as an automatic recognition solution: a visual camera is set at each of the two clamping parts 7. After the visual cameras of the two clamping parts 7 recognize that the clamping parts 7 have reached the set position, the clamping parts 7 are controlled by electronic control to clamp simultaneously. Alternatively, pressure sensors can be set on the clamping parts 7. When the clamping parts 7 on both sides move to connect with the ends of the sub-frame, the pressure sensors on both sides have readings. At this time, the clamping parts 7 are controlled to clamp, thereby achieving synchronous clamping. In some embodiments, similar identification and control can also be performed through distance sensors, etc. to maintain synchronization.

[0053] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A subframe clamp, characterized in that: It includes a support point, a first clamping point and a first clamping component corresponding to the first clamping point, the support point and the first clamping point are symmetrically arranged at two locations, the first clamping point includes a groove-shaped arc opening opening upward, the center of the sub-frame is arranged at the symmetrical center of the support point and the first clamping point, the middle part of the sub-frame contacts the support point during pre-installation, and the two ends of the sub-frame are respectively arranged in the groove-shaped arc openings of the first clamping points at both ends for preliminary positioning, the first clamping component includes a clamping mechanism and a synchronous positioning mechanism, the clamping mechanism is symmetrically arranged about the center of the sub-frame, the clamping mechanism includes a fixed arc opening opening downward, and the synchronous positioning mechanism is suitable for making the fixed arc openings on both sides act on the two ends of the sub-frame at the same time, and then cooperate with the groove-shaped arc opening to fix the sub-frame.

2. The subframe clamp according to claim 1, wherein: The first clamping component also includes a driving mechanism, which includes a rotatably arranged clamping portion, and the bottom of the clamping portion forms the fixed arc opening; the driving mechanism drives the clamping portion to rotate, and when the fixed arc opening approaches the groove-shaped arc opening, the fixed arc opening presses the end of the sub-frame to cooperate with the groove-shaped arc opening and fix it.

3. The subframe clamp according to claim 2, wherein: The synchronous positioning mechanism includes a limiting portion, an avoidance portion, and a rotating rod. The limiting portion and the avoidance portion are provided at both ends of the rotating rod and are symmetrically distributed about the center of the rotating rod. The two ends of the rotating rod correspond to the two clamping portions on both sides respectively. The limiting portion is used to limit the rotation of the rotating rod. The avoidance portion is provided along the radial direction of the rotating rod and slides within a set range. The clamping portion on the first side acts on the avoidance portion to move the avoidance portion when rotating to clamp, and the avoidance portion acts on the restriction portion to move the avoidance portion until the avoidance portion moves to its maximum displacement, and the restriction portion moves to release the restriction on the side of the rotating rod; When the clamping portion on the second side keeps restricting the rotating rod, the rotating rod cannot rotate, so that the avoidance portion abuts against the clamping portion on the first side, so that the clamping portion on the first side stops rotating; When the restriction portions on both sides release the restriction on the rotating rod, the clamping portions on both sides simultaneously act on the avoidance portion, so that the avoidance portion and the rotating rod rotate and avoid along the circumferential direction of the rotating rod, thereby causing the fixed arc openings on both sides to clamp the two ends of the sub-frame at the same time.

4. The subframe clamp according to claim 3, characterized in that: The locking mechanism is configured to lock the locking mechanism, wherein the locking mechanism has a lockhole that is formed on a pair of locking plates and a lockhole that is formed on a pair of locking plates, the lockhole having a lockhole forming a through-hole and a lockhole forming a through-hole.

5. The subframe clamp according to claim 4, wherein: The outer wall of the avoidance portion is formed with a locking portion, and the outer diameter of the locking portion is larger than the inner diameter of the through hole, so that the avoidance portion is restricted to slide up and down in the internal space of the fixing sleeve below the rotating rod; when the bottom of the locking portion and the bottom of the inner cavity of the fixing sleeve abut against each other, the bottom surface of the avoidance portion is flush with the bottom surface of the through hole, so that the limiting portion completely leaves the through hole.

6. The subframe clamp according to claim 4, wherein: A fastener is integrally provided on the outer side of the fixing sleeve, and the fastener is fixedly installed on the end of the rotating rod; a limiting block is provided at the bottom of the limiting portion, and the elastic member is configured as a spring, and the spring is provided between the fixing rod and the top surface of the limiting block.

7. The subframe clamp according to claim 4, wherein: Two clamping columns are arranged at intervals at the bottom of the clamping part, and the fixed arc is formed between the two clamping columns. The top of the groove-shaped arc is provided with an inclined surface. During the rotation and clamping process of the clamping column, the clamping column first abuts against the top of the inclined surface, and when the rotation continues, the clamping column moves down along the inclined surface.

8. The subframe clamp according to claim 4, wherein: The vehicle frame is also provided with a workbench, and a second clamping component is provided in the middle of the two supporting points. The second clamping component includes two slides and two clamping heads. The two clamping heads are respectively fixedly mounted on the two slides. The two slides are respectively provided with two cylinders for driving the two clamping heads to move closer to or away from each other to clamp or release the middle of the sub-frame; the two clamping mechanisms are both provided on both sides of the same slide, and the corresponding synchronous positioning mechanism is provided on the slide on this side; the cylinder enables the clamping head to pre-fix the middle of the sub-frame, and then the two clamping mechanisms start to drive the clamping parts to rotate and synchronously clamp and fix the two ends of the sub-frame.

9. The subframe clamp according to claim 8, wherein: The fixing portion further comprises a fixing frame arranged at the bottom, and the height of the fixing frame is adjustable to adjust the initial distance between the avoiding portion and the clamping portion.

10. The subframe clamp according to claim 8, wherein: The clamping mechanism also includes a driving part, a fixed platform and a rotating part. The fixed platform is fixed on the workbench. The rotating part is rotatably arranged on both sides of the fixed platform. The driving part is suitable for driving the rotating part to rotate. The clamping part is installed on the rotating part.

Images