A press device for a front shock strut assembly

Abstract

The utility model relates to the technical fields of shock absorber frock, in particular to a kind of press-fitting device for front shock strut assembly.The kind of press-fitting device for front shock strut assembly includes: mounting frame;Positioning base, set on mounting frame, for positioning support front shock strut assembly;Compression spring dog jaw assembly, multiple are arranged in circumferential interval, for downward pressing helical spring, to press helical spring, make the upper end of piston rod expose;Upper support positioning assembly, it is equipped with the positioning structure matched with the stud of upper support, for after the alignment of gap overturning locking the circumferential angle of upper support;Tightening mechanism, for locking nut is tightened to set torque.The utility model has realized the accurate press-fitting positioning of front shock strut assembly with notch, and press-fitting precision is high, and reliability is good.

Description

Technical Field

[0001] This utility model relates to the technical field of shock absorber tooling, and in particular to a press-fitting device for a front shock absorber strut assembly. Background Technology

[0002] Currently, the industry standard for press-fitting front damper strut assemblies typically involves first assembling all components (piston rod, coil spring, buffer block, dust cover, bearing assembly, limit sleeve, and upper support) into place, then pressing the support down with a flat plate, compressing the coil spring, and finally tightening the nut to complete the assembly. This method is suitable for products where the upper end of the piston rod is a complete round rod and the center hole of the upper support is a complete round hole (i.e., without a notch), as there is no requirement for circumferential positioning, allowing for normal press-fitting.

[0003] However, when the piston rod has a notch at its upper end and the upper support has a corresponding notch that matches the piston rod notch, the circumferential installation angle of the upper support relative to the piston rod must remain uniquely correct. Using the aforementioned direct press-fitting method with a flat plate, the pressure plate can only provide axial pressure and cannot provide circumferential positioning for the upper support. Simultaneously, the torsional force generated by the coil spring during compression will cause the upper support to rotate circumferentially around the piston rod, causing the aligned notch to deflect. If the notch on the upper support and the notch on the piston rod are not precisely aligned, the upper support will become stuck at the edge of the piston rod notch and cannot be press-fitted in place. Forcing pressure will also damage the notch mating surface, bearing assembly, and buffer block. Therefore, the existing direct press-fitting method with a flat plate cannot meet the precise press-fitting and positioning requirements of the upper support for piston rods with notches. Utility Model Content

[0004] The purpose of this invention is to provide a press-fitting device for a front shock absorber strut and a coil spring, so as to meet the precise press-fitting positioning of the upper support of the piston rod with notch structure.

[0005] To solve the above-mentioned technical problems, this utility model provides a press-fitting device for a front vibration damping strut assembly.

[0006] The present invention relates to a press-fitting device for a front shock absorber strut assembly, comprising: Mounting framework; A positioning base, mounted on the mounting frame, is used to position and support the front shock absorber strut assembly. The spring clamping claw assembly has multiple circumferentially spaced claws for pressing down on the helical springs of the front damping strut assembly to hold the helical springs in place, thus exposing the upper end of the piston rod of the front damping strut assembly. The upper support positioning assembly is equipped with a positioning structure that mates with the stud of the upper support of the front shock absorber strut assembly. It is used to flip the upper support after the notch of the upper support is aligned with the notch of the piston rod, thereby locking the circumferential angle of the upper support. The tightening mechanism is used to tighten the locking nut of the front shock absorber strut assembly to the set torque, thereby fixing the upper support to the piston rod.

[0007] Furthermore, it also includes a claw mounting assembly, which includes a fixed mounting plate and a flip-up mounting plate. The fixed mounting plate is fixedly connected to the mounting frame. The fixed mounting plate and the flip-up mounting plate are detachably fixedly connected and form a ring structure. A plurality of the clamping spring claw assemblies are arranged circumferentially at intervals on the lower side surfaces of the fixed mounting plate and the flip-up mounting plate.

[0008] Furthermore, the fixed mounting plate has an avoidance notch, and both ends of the flip-up mounting plate are connected to the fixed mounting plate and seal the avoidance notch.

[0009] Furthermore, one end of the flip-up mounting plate is rotatably connected to the fixed mounting plate, and the other end of the flip-up mounting plate is detachably connected to the fixed mounting plate via a pin.

[0010] Furthermore, the compression spring claw assembly includes a guide rail assembly and a claw, the claw being arranged on the guide rail assembly for pressing the helical spring downwards, and the guide rail assembly for driving the claw to move radially and axially.

[0011] Furthermore, the claw includes a horizontal section and a vertical section fixedly connected. The horizontal section is used to press down on the helical spring. One end of the vertical section is fixedly connected to the guide rail assembly, and the other end is fixedly connected to one end of the horizontal section.

[0012] Furthermore, the claw also includes an anti-ejection clamping plate segment for preventing the helical spring from ejecting, the anti-ejection clamping plate segment being disposed at the other end of the horizontal segment.

[0013] Furthermore, the upper support positioning assembly includes an upper support positioning plate and a swing assembly. The upper support positioning plate is provided with a plurality of positioning grooves, which constitute the positioning structure. The swing assembly includes a positioning shaft and a swing block. One end of the swing block is rotatably connected to the positioning shaft, and the other end is fixedly connected to the upper support positioning plate.

[0014] Furthermore, it also includes an upper support plate for press-fitting the front damping strut assembly with no notch at the upper end of the piston rod and a complete circular hole in the upper support center hole, the upper support plate cooperating with the positioning base.

[0015] Furthermore, it also includes a pressing cylinder, the telescopic end of which is provided with an elastic pressure block for pressing the oil reservoir of the front shock absorber strut assembly during pressing.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: This utility model discloses a press-fitting device for a front vibration damping strut assembly. When press-fitting a notched front vibration damping strut assembly, the clamping spring claw assembly first presses down the helical spring, exposing the upper end of the piston rod so that the notch on the upper support can be manually aligned with the notch on the piston rod. After alignment, the upper support positioning assembly flips and presses down on the upper support, locking the circumferential angle of the upper support through the positioning structure and the stud on the upper support. Finally, the tightening mechanism tightens the locking nut to the set torque. This achieves precise press-fitting and positioning of the notched front vibration damping strut assembly, avoiding damage to the notch mating surface, bearing assembly, and buffer block caused by forced pressure. It solves the technical problem of notched models being unable to be directly and accurately press-fitted and positioned, resulting in high press-fitting accuracy and reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an embodiment of the press-fitting device for the front vibration damping strut assembly of this utility model; Figure 2 for Figure 1 A magnified view of point A in the image; Figure 3 This is a partial structural schematic diagram of an embodiment of the press-fitting device for the front vibration damping strut assembly of this utility model; Figure 4 This is a schematic diagram of a partial structure of an embodiment of the press-fitting device for a front damping strut assembly according to the present invention, from another perspective. Figure 5 This is a schematic diagram of the jaw structure of an embodiment of the press-fitting device for the front vibration damping strut assembly of this utility model.

[0018] Figure label: 100. Install the frame; 200. Positioning base; 210. Safety stop; 310. Guide rail assembly; 320. Clamp; 321. Horizontal section; 322. Vertical section; 323. Anti-ejection clamping plate section; 410. Upper support positioning plate; 411. Positioning groove; 421. Positioning pivot; 422. Swing block; 430. Upper support pressure plate; 500. Tightening mechanism; 610. Fixed mounting plate; 620. Flip-on mounting plate; 630. Pin; 710. Pressing cylinder; 711. Elastic pressure block. Detailed Implementation

[0019] The pressing device for a front damping strut assembly according to the present invention will now be described with reference to schematic diagrams, which illustrate preferred embodiments of the present invention. It should be understood that those skilled in the art can modify the present invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the present invention.

[0020] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely for distinguishing the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for 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 limitations on this utility model.

[0021] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] In this application, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, the term "electrical connection" can be a direct electrical connection or an indirect electrical connection through an intermediate medium.

[0023] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0024] The following is in conjunction with the instruction manual appendix. Figure 1 To be continued Figure 5This invention relates to a press-fitting device for a front vibration damping strut assembly.

[0025] like Figure 1 and Figure 2 As shown, this utility model provides a press-fitting device for a front shock absorber strut assembly, used to press-fit and fix the helical spring and upper support of the front shock absorber strut assembly. The press-fitting device includes a mounting frame 100, a positioning base 200, a spring clamping claw assembly, an upper support positioning assembly, and a tightening mechanism 500.

[0026] The mounting frame 100 serves as the load-bearing foundation for the press-fitting device, and is used to directly or indirectly mount and support the positioning base 200, the clamping spring claw assembly, the upper support positioning assembly, and the tightening mechanism 500. In this embodiment, the mounting frame 100 includes a load-bearing structure such as an equipment platform. Each component can be installed on the mounting frame 100 by means of bolts or other connections. The specific connection methods are common practices for those skilled in the art and will not be described in detail here.

[0027] like Figure 2 As shown, the positioning base 200 is mounted on the mounting frame 100 and is used to position and support the front shock absorber strut assembly. In this embodiment, the positioning base 200 is a multi-step cylinder with a central hole, and its surface is chrome-plated for rust prevention. It is used to accommodate and position the lower end of the front shock absorber strut assembly (such as an oil reservoir). Specifically, the positioning base 200 is a three-step cylinder with an outer diameter of 98mm, an inner diameter of 60mm, and a height of 45mm. The first step is machined downwards from the highest point of the cylinder's arc, with a length of 33mm and a height of 25mm. The second step is then machined further from the first step surface to form a length of 33mm and a height of 37mm. The positioning base 200 has T-holes, and the positioning base 200 is detachably mounted on the lower plate of the mounting frame 100 through the T-holes and bolts. For different models of front shock absorber strut assemblies, the corresponding positioning base 200 can be replaced to achieve model changeover.

[0028] In some of these embodiments, such as Figure 2 As shown, a safety stop 210 is also provided on the positioning base 200. The safety stop 210 is located in front of the positioning base 200 and is used to prevent the front shock absorber strut assembly from being ejected under force during the pressing process. Specifically, the safety stop 210 is a cuboid structure with dimensions of 26mm in length, 16mm in width, and 80mm in height, and is fixedly installed in front of the positioning base 200.

[0029] Multiple spring clamping claw assemblies are arranged circumferentially at intervals to press down on the helical springs of the front damping strut assembly, thereby pressing the helical springs down and exposing the upper end of the piston rod of the front damping strut assembly so that the notch of the upper support can be manually aligned with the notch of the piston rod. Preferably, there are three spring clamping claw assemblies, which are evenly distributed at 120° angles circumferentially. Of course, the number of spring clamping claw assemblies is not limited to three; there can also be two, four, or more, as long as they can press the helical springs circumferentially.

[0030] The upper support positioning assembly is provided with a positioning structure that cooperates with the stud of the upper support of the front damping strut assembly. It is used to flip after the notch of the upper support is aligned with the notch of the piston rod, lock the circumferential angle of the upper support, prevent the upper support from rotating circumferentially during subsequent pressing and tightening, and ensure that the notch is always aligned.

[0031] The tightening mechanism 500 is used to tighten the locking nut of the front shock absorber strut assembly to a set torque, thereby fixing the upper support to the piston rod. In this embodiment, the tightening mechanism 500 is an electric tightening gun with an inner stop and an outer movement head, used to tighten the nut on the piston rod and tighten the locking nut to the set torque value. Of course, the tightening mechanism 500 can also use other types of electric tightening tools, which are common practices for those skilled in the art and will not be described in detail here.

[0032] With the above structure, in this embodiment, when pressing the front vibration damping strut assembly with notch, the pressing device first uses the clamping spring claw assembly to press the helical spring, exposing the upper end of the piston rod so that the notch of the upper support can be manually aligned with the notch of the piston rod. After the notch of the upper support is aligned with the notch of the piston rod, the upper support positioning assembly flips and presses the upper support, locking the circumferential angle of the upper support through the positioning structure and the stud of the upper support. Finally, the tightening mechanism 500 tightens the locking nut to the set torque. This achieves precise pressing and positioning of the front vibration damping strut assembly with notch, and avoids damage to the notch mating surface, bearing assembly and buffer block caused by forced pressure. It solves the technical problem that notch-type models cannot be directly and accurately pressed and positioned, resulting in high pressing accuracy and good reliability.

[0033] In some of these embodiments, such as Figure 3 As shown, the pressing device further includes a claw mounting assembly, which includes a fixed mounting plate 610 and a flip-up mounting plate 620. The fixed mounting plate 610 is fixedly connected to the mounting frame 100. The fixed mounting plate 610 and the flip-up mounting plate 620 are detachably fixedly connected and form a ring structure. A plurality of the pressing spring claw assemblies are arranged circumferentially at intervals on the lower side surfaces of the fixed mounting plate 610 and the flip-up mounting plate 620.

[0034] Specifically, the fixed mounting plate 610 and the flip-up mounting plate 620 are detachably fixedly connected and together form an annular structure. The inner cavity of this annular structure is adapted to the outer circumferential contour of the helical spring, and the helical spring passes through this annular structure. Multiple spring clamping claw assemblies are arranged circumferentially at intervals on the lower surfaces of the fixed mounting plate 610 and the flip-up mounting plate 620. When the helical spring is in place, the multiple spring clamping claw assemblies simultaneously press the helical spring downwards circumferentially, ensuring uniform force and smooth compression. In this embodiment, the flip-up mounting plate 620 is an annular platform structure with an inner diameter of 155mm and a height of 38mm. Its inner annular circle is hollowed out, forming an annular space with the fixed mounting plate 610 to accommodate the helical spring.

[0035] By setting the claw mounting assembly, multiple compression spring claw assemblies are integrated and mounted on the lower side of the annular fixed mounting plate 610 and the flip-up mounting plate 620. On the one hand, this facilitates the multiple compression spring claw assemblies to apply uniform pressure to the helical spring in the circumferential direction. On the other hand, since the flip-up mounting plate 620 is detachably and fixedly connected to the fixed mounting plate 610, when it is necessary to remove or place the front shock absorber strut assembly, the flip-up mounting plate 620 can be removed or flipped open, providing operating space for removing and placing the helical spring and the front shock absorber strut assembly. This makes the operation convenient and efficient.

[0036] In some embodiments, the fixed mounting plate 610 has a clearance notch, and the two ends of the snap-on mounting plate 620 are connected to the fixed mounting plate 610 and seal the clearance notch.

[0037] Specifically, the fixed mounting plate 610 is an arc-shaped plate structure with a clearance notch on one side. This clearance notch is used to allow clearance from the front vibration damping support assembly and to provide operating space. The two ends of the flip-up mounting plate 620 are fixedly connected to both sides of the clearance notch of the fixed mounting plate 610, thereby sealing the clearance notch and forming a complete annular structure together with the fixed mounting plate 610. This ensures the integrity of the annular structure, allowing multiple clamping spring claw assemblies to be arranged along the entire circumference, while the cooperation between the clearance notch and the flip-up mounting plate 620 enables the opening and closing of the annular structure, facilitating the loading and unloading of workpieces.

[0038] In some embodiments, one end of the flip-up mounting plate 620 is rotatably connected to the fixed mounting plate 610, and the other end of the flip-up mounting plate 620 is detachably connected to the fixed mounting plate 610 via a pin 630.

[0039] Specifically, one end of the fixed mounting plate 610 has a mounting hole, and one end of the flip-up mounting plate 620 is rotatably mounted to the mounting hole of the fixed mounting plate 610 via a pivot, allowing the flip-up mounting plate 620 to rotate around this end. In this embodiment, the other end of the flip-up mounting plate 620 has a 30mm diameter circular hole for installing the pin 630, which passes through the circular hole to achieve connection and locking. When closing is required, the flip-up mounting plate 620 is rotated to block the clearance notch, and then the other end of the flip-up mounting plate 620 is locked and fixed to the fixed mounting plate 610 by the pin 630. When it is necessary to remove or place the workpiece, the pin 630 is pulled out, and the flip-up mounting plate 620 is rotated open. In this embodiment, the rotatable connection between the flip-up mounting plate 620 and the fixed mounting plate 610 can also be achieved by a hinge, etc., which are common practices for those skilled in the art and will not be described in detail here.

[0040] With the above structure, the flip-top mounting plate 620 forms a flip-top structure that can be flipped open. Combined with the locking pin 630, it can achieve quick opening and closing, convenient loading and unloading of workpieces, and ensure the reliability of the connection when closed, preventing accidental opening due to force during the pressing process and ensuring pressing safety.

[0041] In some of these embodiments, such as Figure 3 As shown, the compression spring claw assembly includes a guide rail assembly 310 and a claw 320. The claw 320 is arranged on the guide rail assembly 310 and is used to press the helical spring downward. The guide rail assembly 310 is used to drive the claw 320 to move radially and axially.

[0042] Specifically, the guide rail assembly 310 is installed on the lower side of the fixed mounting plate 610 and / or the flip-up mounting plate 620, and the claw 320 is fixedly arranged on the output end of the guide rail assembly 310. The guide rail assembly 310 can drive the claw 320 to move radially and axially (i.e., radially and axially of the helical spring), thereby adjusting the position of the claw 320 in the radial and axial directions to accommodate helical springs of different outer diameters and wire diameters, achieving type change adjustment. In this embodiment, the guide rail assembly 310 can adopt a structure such as a lead screw guide rail assembly, where the rotation of the lead screw drives the claw 320 to move radially, and the sliding of the guide rail drives the claw 320 to move axially; the specific radial and axial movement adjustment methods are common practices for those skilled in the art and will not be described in detail. In a specific example, during press-fitting, the downward pressing movement of the clamping spring claw assembly along the axial direction can be driven by a servo electric cylinder, pneumatic cylinder, or other driving component.

[0043] This ensures that multiple 320-inch jaws simultaneously and stably press the helical spring during press-fitting, while also enabling rapid adjustment during model changeover, thus balancing press-fitting efficiency and model changeover convenience.

[0044] In some of these embodiments, such as Figure 5 As shown, the claw 320 includes a horizontal section 321 and a vertical section 322 that are fixedly connected. The horizontal section 321 is used to press down on the helical spring. One end of the vertical section 322 is fixedly connected to the guide rail assembly 310, and the other end is fixedly connected to one end of the horizontal section 321.

[0045] Specifically, the claw 320 has an L-shaped structure. One end of the vertical section 322 is fixedly connected to the output end of the guide rail assembly 310, and the other end of the vertical section 322 extends downward and is fixedly connected to one end of the horizontal section 321. The horizontal section 321 extends radially inward (towards the helical spring), and its lower surface is used to press down on the upper end face of the helical spring. When the guide rail assembly 310 drives the claw 320 to move downward, the lower surface of the horizontal section 321 presses against the upper end face of the helical spring, thereby compressing the helical spring downward.

[0046] In this embodiment, the horizontal segment 321 is a cuboid structure with dimensions of 30mm in length, 30mm in width, and 15mm in height; the vertical segment 322 is a cuboid structure extending upward from one end of the horizontal segment 321, with dimensions of 30mm in length, 6mm in width, and 25mm in height; the corner between the horizontal segment 321 and the vertical segment 322 is rounded, for example, with an R2 fillet, to avoid stress concentration and extend the service life of the chuck 320. Of course, the above dimensions are only examples of this embodiment, and the actual dimensions can be flexibly adjusted according to the specifications of the helical spring.

[0047] In some of these embodiments, such as Figure 5 As shown, the claw 320 also includes an anti-ejection clamping plate section 323 for preventing the helical spring from ejecting, and the anti-ejection clamping plate section 323 is disposed at the other end of the horizontal section 321.

[0048] Specifically, the anti-ejection clamping plate segment 323 is disposed at the other end of the horizontal segment 321 (i.e., the end facing the coil spring), extending upward or outward from that end of the horizontal segment 321. It is used to restrict the axial or radial displacement of the coil spring after compression, preventing the coil spring from ejecting from between the claws 320 during or after compression, thus providing a safety protection function. The anti-ejection clamping plate segment 323 can be integrally formed by bending upward from the other end of the horizontal segment 321, or it can be an independent plate fixedly connected to the horizontal segment 321 (e.g., by welding or bolting). Specific connection methods are common practices among those skilled in the art and will not be elaborated further.

[0049] By setting the anti-ejection clamping plate section 323, the safety risk of the helical spring ejecting and injuring people due to torsional and compressive stress during the pressing process is effectively avoided, and the safety of the pressing process is significantly improved.

[0050] In some of these embodiments, such as Figure 3 and Figure 4 As shown, the upper support positioning assembly includes an upper support positioning plate 410 and a swing assembly. The upper support positioning plate 410 is provided with a plurality of positioning grooves 411, and the plurality of positioning grooves 411 constitute the positioning structure. The swing assembly includes a positioning rotating shaft 421 and a swing block 422. One end of the swing block 422 is rotatably connected to the positioning rotating shaft 421, and the other end is fixedly connected to the upper support positioning plate 410.

[0051] Specifically, the upper support positioning plate 410 is a plate-shaped structure with multiple circumferentially spaced positioning grooves 411. The positions of these positioning grooves 411 correspond one-to-one with the positions of multiple studs on the upper support, forming the positioning structure. When the notch of the upper support aligns with the notch of the piston rod, the upper support positioning plate 410 is flipped and pressed onto the upper support. The multiple studs of the upper support extend into their corresponding positioning grooves 411, thereby locking the circumferential angle of the upper support and preventing circumferential rotation during subsequent pressing and tightening, ensuring that the notches remain aligned. In this embodiment, the width of the positioning groove 411 is 8.5 mm, and the distance between adjacent positioning grooves 411 is the same as the distance between adjacent studs on the upper support. For example, two positioning grooves 411 are provided, and each of the two positioning grooves 411 engages with one of the two studs on the upper support, thereby ensuring the accurate installation position of the upper support. Of course, the number of positioning grooves 411 can be less than the number of studs on the upper support, but cannot be less than two.

[0052] The swing assembly is used to rotate the upper support positioning plate 410. Specifically, the positioning shaft 421 is rotatably supported on the mounting frame 100, and the swing block 422 is fixedly connected to the upper support positioning plate 410 and can rotate around the positioning shaft 421, thereby driving the upper support positioning plate 410 to rotate and switch between the pressing station and the non-pressing station. In this embodiment, there are two swing blocks 422, which are fixedly connected to both ends of the upper support positioning plate 410 respectively. One end of each swing block 422 is rotatably connected to the positioning shaft 421, which is located in the middle of the upper support positioning plate 410, so that the force is balanced, stable and convenient during rotation.

[0053] With the above structure, the upper support positioning plate 410 can accurately position the upper support in the circumference by cooperating with the studs of the upper support through multiple positioning grooves 411. The swing component realizes the smooth flipping and locking of the upper support positioning plate 410, which not only ensures positioning accuracy, but also facilitates manual operation.

[0054] In some of these embodiments, such as Figure 3 As shown, the pressing device also includes an upper support plate 430 for pressing the front damping strut assembly with no notch at the upper end of the piston rod and a complete circular hole in the upper support center hole. The upper support plate 430 cooperates with the positioning base 200.

[0055] Specifically, when pressing the front damping strut assembly without a notch, since there is no notch at the upper end of the piston rod, there is no need to perform a notch alignment process first. However, the upper support still has a set circumferential installation angle in the assembly, and it still needs to be circumferentially positioned. During pressing, after the upper support is placed in place, the upper support pressure plate 430 is pressed down on the upper support from top to bottom. The studs of the upper support extend into the corresponding positioning grooves 411 on the upper support pressure plate 430 to lock the circumferential angle of the upper support. Then, the coil spring is pressed down, and the tightening mechanism 500 tightens the locking nut to the set torque to complete the assembly.

[0056] In this embodiment, the upper support plate 430 is a cuboid plate structure with dimensions of 330mm in length, 171mm in width, and 25mm in height. A 77mm diameter perforated circular hole is provided in the center to allow the piston rod and locking nut to pass, enabling the tightening mechanism 500 to tighten from above. The upper support plate 430 also has three 8.5mm wide positioning slots 411. These positioning slots 411 correspond one-to-one with the installation positions of multiple studs on the upper support. The studs of the upper support extend into their respective positioning slots 411, thereby locking the circumferential angle of the upper support. Of course, the above dimensions and number of slots are merely examples of this embodiment and can be adjusted according to actual product specifications.

[0057] By setting the upper support pressure plate 430, when pressing the front vibration damping strut assembly without notches, the positioning groove 411 cooperates with the studs of the upper support to achieve circumferential positioning of the upper support, ensuring that its set installation angle is accurate; and there is no need to replace another set of pressing equipment, only the upper pressure plate needs to be replaced to complete the pressing. Thus, both notched and unnotched front vibration damping strut assemblies can be pressed on the same pressing device, saving the investment of one piece of equipment, and the changeover is convenient and quick.

[0058] In some of these embodiments, such as Figure 2 As shown, the pressing device also includes a pressing cylinder 710, and the telescopic end of the pressing cylinder 710 is provided with an elastic pressure block 711, which is used to press the oil reservoir of the front shock absorber strut assembly during pressing.

[0059] Specifically, the clamping cylinder 710 is mounted on the mounting frame 100, with its telescopic end facing the positioning base 200. The elastic pressure block 711 is located at the telescopic end of the clamping cylinder 710. During press-fitting, after the front damping strut assembly is placed on the positioning base 200, the clamping cylinder 710 is driven to extend, causing the elastic pressure block 711 to press against the oil reservoir of the front damping strut assembly. This reliably presses and fixes the lower end of the front damping strut assembly onto the positioning base 200, preventing the front damping strut assembly from shifting or popping out during the press-fitting process. In this embodiment, the elastic pressure block 711 is a cylindrical rubber block with a certain elastic deformation capacity, which can prevent damage to the surface of the oil reservoir while pressing it. Of course, the elastic pressure block 711 can also be made of polyurethane, nylon, or other materials with a certain degree of elasticity. The clamping cylinder 710 can be extended and retracted by pressing a button, solenoid valve, etc. The specific control method is a common practice for those skilled in the art and will not be described in detail here.

[0060] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A press-fitting device for a front damping strut assembly, characterized in that, include: Mounting framework; A positioning base, mounted on the mounting frame, is used to position and support the front shock absorber strut assembly. The spring clamping claw assembly has multiple circumferentially spaced claws for pressing down on the helical springs of the front damping strut assembly to hold the helical springs in place, thus exposing the upper end of the piston rod of the front damping strut assembly. The upper support positioning assembly is equipped with a positioning structure that mates with the stud of the upper support of the front shock absorber strut assembly. It is used to flip the upper support after the notch of the upper support is aligned with the notch of the piston rod, thereby locking the circumferential angle of the upper support. The tightening mechanism is used to tighten the locking nut of the front shock absorber strut assembly to the set torque, thereby fixing the upper support to the piston rod.

2. The press-fitting device for the front vibration damping strut assembly according to claim 1, characterized in that, It also includes a claw mounting assembly, which includes a fixed mounting plate and a flip-up mounting plate. The fixed mounting plate is fixedly connected to the mounting frame. The fixed mounting plate and the flip-up mounting plate are detachably fixedly connected and form a ring structure. A plurality of the clamping spring claw assemblies are arranged circumferentially at intervals on the lower side of the fixed mounting plate and the flip-up mounting plate.

3. The press-fitting device for the front vibration damping strut assembly according to claim 2, characterized in that, The fixed mounting plate has an avoidance notch, and the two ends of the flip-up mounting plate are connected to the fixed mounting plate and seal the avoidance notch.

4. The press-fitting device for the front vibration damping strut assembly according to claim 3, characterized in that, One end of the flip-up mounting plate is rotatably connected to the fixed mounting plate, and the other end of the flip-up mounting plate is detachably connected to the fixed mounting plate via a pin.

5. The press-fitting device for a front vibration damping strut assembly according to claim 1, characterized in that, The compression spring claw assembly includes a guide rail assembly and a claw. The claw is arranged on the guide rail assembly and is used to press down the helical spring. The guide rail assembly is used to drive the claw to move radially and axially.

6. The press-fitting device for a front vibration damping strut assembly according to claim 5, characterized in that, The chuck includes a horizontal section and a vertical section that are fixedly connected. The horizontal section is used to press down on the helical spring. One end of the vertical section is fixedly connected to the guide rail assembly, and the other end is fixedly connected to one end of the horizontal section.

7. The press-fitting device for a front vibration damping strut assembly according to claim 6, characterized in that, The claw also includes an anti-ejection clamping plate segment for preventing the helical spring from ejecting, the anti-ejection clamping plate segment being disposed at the other end of the horizontal segment.

8. The press-fitting device for a front vibration damping strut assembly according to claim 1, characterized in that, The upper support positioning assembly includes an upper support positioning plate and a swing assembly. The upper support positioning plate is provided with multiple positioning slots, which constitute the positioning structure. The swing assembly includes a positioning shaft and a swing block. One end of the swing block is rotatably connected to the positioning shaft, and the other end is fixedly connected to the upper support positioning plate.

9. The press-fitting device for a front vibration damping strut assembly according to claim 1, characterized in that, It also includes an upper support plate for press-fitting the front damping strut assembly with no notch at the upper end of the piston rod and a complete circular hole in the upper support center hole, the upper support plate cooperating with the positioning base.

10. The press-fitting device for a front vibration damping strut assembly according to claim 1, characterized in that, It also includes a pressing cylinder, the telescopic end of which is provided with an elastic pressure block, used to press down the oil reservoir of the front shock absorber strut assembly during pressing.

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