Disassembling and assembling tool for automobile shock absorber spring

Abstract

The utility model discloses a disassembling and assembling tool for an automobile shock absorber spring, and belongs to the technical field of vehicle maintenance tools. Comprising a supporting frame and a supporting column, the supporting column is installed above the supporting frame, a sliding block is installed on the supporting column in a sliding mode, a compression assembly used for compressing a shock absorber spring is installed on the sliding block, a driving assembly used for driving the sliding block to slide in the axial direction of the supporting column is installed on the sliding block, and a clamping assembly used for clamping a shock absorber body is installed on the supporting frame. The compression assembly comprises a cross arm which can rotate around a horizontal shaft and is installed on the sliding block, side arms are installed at the two ends of the cross arm in a sliding mode, clamping jaws are installed on the two side arms in a rotating mode, the clamping jaws are fixed relative to the side arms through clamping jaw locking pieces, the clamping jaws rotate to enable the force application faces of the clamping jaws to be attached to the spring, and a shock absorber supporting assembly is installed below the clamping assembly. The tool has the advantages that the clamping jaw can rotate to a proper angle so as to be better attached to the spring, the shock absorber supporting assembly plays a role in bearing the shock absorber, and the reliability of the tool is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle maintenance tools, in particular to a vehicle shock absorber spring disassembly and assembly tool. Background Art

[0002] At present, shock absorbers are generally installed on automobile suspension systems to reduce vehicle vibration and improve the smoothness of vehicle driving. After a period of use, automobile shock absorbers will age and lose their original shock absorption effect. Among the shock absorbers, the damper has the shortest life, so the shock absorber damper needs to be replaced frequently. When replacing the shock absorber damper, it is necessary to compress the shock absorber spring to separate the spring from the shock absorber, and then take out the damper and replace it to complete the shock absorber maintenance. However, due to the large elastic force of the shock absorber spring, it is more laborious to use the method of manually compressing the spring, and the disassembly and assembly efficiency is low.

[0003] In the face of the above problems, a Chinese utility model patent with authorization announcement number CN213411870U and authorization announcement date June 11, 2021 discloses a car shock absorber spring disassembly and assembly machine, which clamps the shock absorber assembly through two clamping rods and compresses the shock absorber spring through two upper and lower offset pressure rods. However, there are two shortcomings in the car shock absorber spring disassembly and assembly machine: first, the shock absorber assembly is clamped only by the clamping rod. If the shock absorber spring has a large elastic force, the clamping force of the clamping rod is insufficient, and there is a risk that the shock absorber assembly will slide down when the spring is compressed, causing the shock absorber to bump; second, if the pitch of the shock absorber spring is large, its spiral angle is large, and the horizontally arranged pressure rod cannot fully fit the spring. Different parts of the spring are subjected to different compression forces, so there is a risk of the spring collapsing laterally. Utility Model Content

[0004] The utility model aims to provide a tool for disassembling and assembling a shock absorber spring of an automobile, so as to solve the problems in the prior art that the shock absorber assembly is easy to slide down and the degree of fit between the pressure rod and the spring is low.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A car shock absorber spring disassembly and assembly tool is designed, comprising a support frame and a support column, the support column is installed above the support frame, a slider is slidably installed on the support column, a compression assembly for compressing the shock absorber spring is installed on the slider, a driving assembly for driving the slider to slide along the axial direction of the support column is installed on the slider, a clamping assembly for clamping the shock absorber body is installed on the support frame, the compression assembly comprises a cross arm rotatably installed on the slider around a horizontal axis, side arms are slidably installed at both ends of the cross arm, claws are rotatably installed on both side arms, the claws are relatively fixed to the side arms through claw locking pieces, the claws rotate so that their force application surfaces fit the spring, and a shock absorber support assembly is installed below the clamping assembly.

[0007] Preferably, a rotation limiting structure is provided at one end of the claw close to the side arm, the rotation limiting structure is a limiting boss, one end of the limiting boss is a limiting end in a "V" shape, and the claw locking member includes a claw gasket and a locking screw.

[0008] Preferably, the claw is slidably mounted on the side arm, a sliding groove extending along the length direction of the side arm is provided on the side arm, and the claw mounting part can slide in the sliding groove and be fixed relative to the side arm through a claw locking piece.

[0009] Preferably, one of the cross arm and the slider is provided with a pair of waist-shaped holes, and the other is provided with a pair of fixing pins. The waist-shaped holes and the fixing pins cooperate to allow the cross arm to rotate relative to the slider. The cross arm is fixed relative to the slider by a cross arm gasket and a locking bolt.

[0010] Preferably, the shock absorber support assembly includes a support vertical rod, a support cross rod and a shock absorber support platform, the support cross rod is slidably mounted on the support vertical rod, and the shock absorber support platform is movably mounted on the support cross rod.

[0011] Preferably, a vertical adjustment screw and a horizontal adjustment screw are installed on the shock absorber support, and a slide groove is provided on the upper end surface of the supporting cross bar for limiting the horizontal movement of the shock absorber support.

[0012] Preferably, the clamping assembly includes a mounting plate and a clamping plate, the clamping assembly is mounted on the support frame through the mounting plate, the clamping plate includes a fixed clamping plate and a rotating clamping plate, the support column and the shock absorber support assembly are both mounted on the fixed clamping plate, and a clamping position is formed between the fixed clamping plate and the rotating clamping plate.

[0013] Preferably, the clamping assembly also includes a fine-tuning screw and a locking screw, which are respectively located at both ends of the clamping plate. The fine-tuning screw includes a hand-adjusting nut and a screw. One end of the screw is slidably fixed to the fixed clamping plate, and the other end is rotatably mounted with a rotating clamping plate. One end of the locking screw is slidably fixed to the rotating clamping plate, and the other end is a locking head. A groove is provided on the side of the fixed clamping plate facing away from the rotating clamping plate for cooperating with the locking head.

[0014] Preferably, the support vertical rod is provided with a plurality of groups of fixing holes spaced apart along the height direction of the support vertical rod, and the support cross rod is provided with a group of mounting holes, and the mounting holes cooperate with different fixing holes to adjust the installation height of the support cross rod.

[0015] Preferably, the support column is a hollow structure, the drive assembly includes a screw rod rotatably installed inside the support column, the slider includes a connecting rod and a threaded barrel inside the slider, the connecting rod is fixed between the threaded barrel and the inner wall of the slider, the threaded barrel is threadedly connected to the screw rod, and a sliding groove for the connecting rod to slide through is opened on the side wall of the support column.

[0016] Compared with the prior art, the beneficial technical effects of the utility model are: the claw can rotate relative to the side arm, so that the claw can rotate to a suitable angle to better fit the spring, reducing the risk of lateral collapse of the spring; and a shock absorber support assembly is installed under the clamping assembly, which can support the bottom of the shock absorber, which is beneficial to share the pressure of the clamping assembly, improve the reliability of the tool, and reduce operational risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the slider in the utility model;

[0019] Figure 3 This is an exploded schematic diagram of the assembly of the slider and the cross arm in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the compression component in the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the clamping jaws in the utility model;

[0022] Figure 6 It is a structural schematic diagram of the clamping assembly in the utility model;

[0023] Figure 7 It is a schematic diagram of the assembly of the supporting cross bar and the shock absorber support platform in the utility model.

[0024] In the figure, 1-support frame; 2-support column; 3-slider; 31-threaded cylinder; 32-connecting rod; 33-waist hole; 4-compression assembly; 41-cross arm; 411-fixing pin; 412-cross arm gasket; 413-locking bolt; 42-side arm; 421-slideway; 43-claw; 431-limiting boss; 432-claw gasket; 433-locking screw; 5-driving assembly; 51-screw; 52-crank handle; 6-clamping assembly; 61 -Mounting plate; 62-clamp plate; 622-fixed clamp plate; 623-rotating clamp plate; 63-fine-tuning screw; 631-hand-adjusting nut; 632-screw; 633-pin; 64-locking screw; 641-locking head; 642-screw; 643-handle; 7-shock absorber support assembly; 71-support vertical rod; 72-support horizontal rod; 73-shock absorber support platform; 731-horizontal adjustment screw; 732-moving block; 733-vertical adjustment screw. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention is described below in conjunction with the accompanying drawings and embodiments, but the following embodiments are only used to illustrate the present invention in detail and do not limit the scope of the present invention in any way. The equipment parts, structures, etc. involved in the following embodiments are all conventional commercially available products unless otherwise specified.

[0026] Embodiment 1: A vehicle shock absorber spring disassembly and assembly tool, see Figure 1-7 , including a support frame 1 and a support column 2, the support column 2 is installed above the support frame 1, a slider 3 is slidably installed on the support column 2, a compression assembly 4 for compressing the shock absorber spring is installed on the slider 3, a driving assembly 5 for driving the slider 3 to slide along the axial direction of the support column 2 is installed on the slider 3, a clamping assembly 6 for clamping the shock absorber body is installed on the support frame 1, the compression assembly 4 includes a cross arm 41 rotatably installed on the slider 3 around a horizontal axis, side arms 42 are slidably installed at both ends of the cross arm 41, and claws 43 are rotatably installed on both side arms 42, the claws 43 are relatively fixed to the side arms 42 through claw locking members, and the claws 43 rotate so that their force application surface fits the spring, and a shock absorber support assembly 7 is installed below the clamping assembly 6.

[0027] Specifically, Figure 1 As shown, the support frame 1 includes two transverse square steels, a reinforcing rib is welded between the two square steels, a longitudinal square steel is installed above the reinforcing rib, a fixing flange is provided above the longitudinal square steel, and a mounting plate 61 for fixing the clamping assembly 6 is installed, and the support column 2 is installed on the fixing clamp plate 622. Figure 1 and Figure 2 As shown, the support column 2 is a hollow structure, the driving assembly 5 includes a screw rod 51 rotatably mounted inside the support column 2, the slider 3 includes a connecting rod 32 and a threaded barrel 31 inside the slider 3, the connecting rod 32 is fixedly connected between the threaded barrel 31 and the inner wall of the slider 3, the threaded barrel 31 is threadedly connected to the screw rod 51, and a slide groove for the connecting rod 32 to slide through is provided on the side wall of the support column 2. The driving assembly also includes a crank 52, which is fixedly connected to the screw rod 51. An angular thrust bearing (not shown in the figure) is provided at the lower end of the support column 2 to withstand the reaction force brought by the compression spring.

[0028] like Figure 3 As shown, the cross arm 41 can rotate around the horizontal axis relative to the slider 3. Specifically, a cylindrical boss is convexly provided on the side of the slider 3 facing the cross arm 41. Correspondingly, a cylindrical groove is provided on the cross arm 41. The cylindrical boss serves as the rotation axis of the cross arm 41. A pair of waist-shaped holes 33 are evenly distributed around the cylindrical boss on the side of the slider 3. Correspondingly, a pair of fixing pins 411 are fixed on the cross arm 41. The fixing pins 411 and the waist-shaped holes 33 cooperate to limit the rotation angle of the cross arm 41. The cross arm 41 is relatively fixed to the slider 3 through the cross arm gasket 412 and the locking bolt 413. Figure 4As shown, the two side arms 42 are slidably mounted on the two ends of the cross arm 41. Specifically, the side arms 42 are provided with sliding holes that match the end structure of the cross arm 41. The side arms 42 are sleeved on the cross arm 41 through the sliding holes. The side ends of the side arms 42 are provided with threaded holes for locking bolts to penetrate and lock the side arms 42. The claws 43 are slidably mounted on the side arms 42. Specifically, the side arms 42 are provided with sliding grooves 421 extending along the length direction of the side arms 42. The mounting portion of the claws 43 can slide in the sliding grooves 421. Figure 5 As shown, the end of the claw 43 close to the side arm 42 is provided with a rotation limit structure, which is a limit boss 431. The upper and lower ends of the limit boss 431 are both "V"-shaped limit ends, which are used to cooperate with the slide groove 421 to limit the rotation angle of the claw 43 (when one side of the "V"-shaped limit end fits the slide groove 421, it means that the rotation angle of the claw 43 has reached the limit). The claw 43 is fixed relative to the side arm 42 by a claw locking member, and the claw locking member includes a claw gasket 432 and a locking screw 433.

[0029] like Figure 6 As shown, the clamping assembly 6 includes a mounting plate 61 and a clamping plate 62. The clamping assembly 6 is mounted on the fixed flange of the support frame 1 through the mounting plate 61. The clamping plate 62 includes a fixed clamping plate 622 and a rotating clamping plate 623. The support column 2 and the shock absorber support assembly 7 are both mounted on the fixed clamping plate 622. The support column 2 is mounted on the upper end surface of the fixed clamping plate 622, and the shock absorber support assembly 7 is mounted on the lower end surface of the fixed clamping plate 622. A clamping position is formed between the fixed clamping plate 622 and the rotating clamping plate 623, and the clamping position is adapted to the structure of the shock absorber body. The clamping assembly 6 also includes a fine-tuning screw 63 and a locking screw 64. The fine-tuning screw 63 and the locking screw 64 are respectively located at both ends of the clamping plate 62. The fine-tuning screw 63 is located at the left end of the clamping plate 62, and the locking screw 64 is located at the right end of the clamping plate 62. Specifically, the fixed clamping plate 622 and the rotating clamping plate 623 each include an upper clamping plate and a lower clamping plate. The left end of the fixed clamping plate 622 is located between the upper and lower clamping plates and a threaded block is fixed thereon. The fine-tuning screw 63 includes a manual adjustment nut 631 and a screw 632. One end of the screw 632 is threadedly engaged with the threaded block and passes through the threaded block. The manual adjustment nut 631 is threadedly assembled on one end of the screw 632 that passes through the threaded block. The other end of the screw 632 is installed between the upper and lower clamping plates of the rotating clamping plate 623 through a pin shaft 633 for relative rotation, so that the rotating clamping plate 623 can rotate around the pin shaft 633 relative to the screw 632. The locking screw 64 includes a screw 642, one end of which is threadedly installed on a threaded block fixed between the upper and lower plates of the rotating clamping plate 623 and passes through the rotating clamping plate 623. A handle 643 is installed on the passing end, and a locking head 641 is provided at the other end of the screw 642. Correspondingly, a groove is provided on one end of the fixed clamping plate 622 facing away from the rotating clamping plate 633 for cooperating with the locking head 641.

[0030] like Figure 1 and Figure 7 As shown, the shock absorber support assembly 7 includes a support vertical rod 71, a support cross rod 72 and a shock absorber support platform 73. The support cross rod 72 is slidably mounted on the support vertical rod 71. Specifically, the support vertical rod 71 is provided with a plurality of fixing holes spaced along the height direction of the support vertical rod 71. The support cross rod 72 is provided with a group of mounting holes. The mounting holes are matched with different fixing holes to adjust the mounting height of the support cross rod 72. Finally, the support cross rod 72 is relatively fixed to the support vertical rod 71 by fixing bolts. The shock absorber support platform 73 is movably mounted on the support cross rod 72. Specifically, a vertical adjustment screw 732 and a horizontal adjustment screw 731 are installed on the shock absorber support platform 73. One end of the horizontal adjustment screw 731 is fixed to the moving block 732, and the other end passes through the side wall of the support cross rod 72 and is threadedly connected to the nut on the side wall of the support cross rod 72. A lead screw of a vertical adjustment lead screw 733 is fixed at the lower end of the shock absorber support 73, and a nut is connected to the external thread of the lead screw, and the nut is fixed on the moving block 732. A sliding groove is provided on the upper end surface of the support cross bar 72 for limiting the horizontal movement of the shock absorber support 73.

[0031] The specific working principle of the automobile shock absorber spring disassembly and assembly tool of the utility model is as follows: when in use, the handle 643 is rotated to make the screw 642 move with the locking head 641 toward the fixed clamping plate 622 until the locking head 641 completely disengages from the groove on the fixed clamping plate 622, and the rotating clamping plate 623 is rotated to make the rotating clamping plate 623 away from the fixed clamping plate 622. At this time, the shock absorber body is placed on the clamping position of the rotating clamping plate 623 and the fixed clamping plate 622 and the bottom of the shock absorber is placed on the shock absorber support 73, and then the rotating clamping plate 623 is rotated in the opposite direction to make it close to the fixed clamping plate 622, and the handle 643 is rotated in the opposite direction to make the locking head 641 embed into the groove of the fixed clamping plate 622 and close to the groove. In this process, different types of shock absorbers can be adapted by adjusting the fine adjustment screw 63, the vertical adjustment screw 733 and the horizontal adjustment screw 731 and adjusting the height of the support cross bar 72. Next, the force-applying surface of the claw 43 is made to fit with the spring by adjusting the rotation angle of the cross arm 41, horizontally moving the side arm 42, horizontally moving the claw 43, and adjusting the rotation angle of the claw 43, and the compression assembly is locked and fixed by corresponding locking members. Finally, the crank 52 is turned so that the slider 3 moves downward with the compression assembly 4 along the axis direction of the support column 2 to compress the shock-absorbing spring, so that the upper end of the spring and the upper gasket do not contact each other. At this time, the operator can remove the upper gasket from the shock absorber and disassemble the shock absorber.

[0032] Compared with the prior art, the utility model has the following beneficial effects: the claw can rotate relative to the side arm, so that the claw can rotate to a suitable angle to better fit the spring, reducing the risk of the spring collapsing laterally; and a shock absorber support assembly is installed under the clamping assembly, which can support the bottom of the shock absorber, which is conducive to sharing the pressure of the clamping assembly, improving the reliability of the tool, and reducing the operation risk. The shock absorber support platform can be fine-tuned horizontally and vertically to better support the bottom of the shock absorber, and can be suitable for different shock absorbers.

[0033] The utility model is described in detail above with reference to the accompanying drawings and embodiments. However, those skilled in the art will appreciate that, without departing from the spirit of the utility model, the specific parameters in the above embodiments may be changed to form a plurality of specific embodiments, which are all within the common variation range of the utility model and will not be described in detail here.

Claims

1. A tool for disassembling and assembling a shock absorber spring of an automobile, comprising a support frame and a support column, wherein the support column is mounted above the support frame, a slider is slidably mounted on the support column, a compression assembly for compressing the shock absorber spring is mounted on the slider, a driving assembly for driving the slider to slide along the axial direction of the support column is mounted on the slider, and a clamping assembly for clamping the shock absorber body is mounted on the support frame, characterized in that: The compression assembly includes a cross arm rotatably mounted on a slider around a horizontal axis, side arms are slidably mounted at both ends of the cross arm, claws are rotatably mounted on both side arms, the claws are relatively fixed to the side arms through claw locking pieces, and the claws rotate so that their force-applying surfaces fit with the spring, and a shock absorber support assembly is installed below the clamping assembly.

2. The automobile shock absorber spring disassembly and assembly tool according to claim 1, characterized in that: A rotation limiting structure is provided at one end of the clamping claw close to the side arm. The rotation limiting structure is a limiting boss. One end of the limiting boss is a limiting end in a "V" shape. The clamping claw locking member includes a clamping claw gasket and a locking screw.

3. The automobile shock absorber spring disassembly and assembly tool according to claim 1, characterized in that: The clamping claw is slidably mounted on the side arm, and a sliding groove extending along the length direction of the side arm is provided on the side arm. The clamping claw mounting part can slide in the sliding groove and be fixed relative to the side arm through a clamping claw locking piece.

4. The automobile shock absorber spring disassembly and assembly tool according to claim 1, characterized in that: A pair of waist-shaped holes are arranged on one of the cross arm and the slider, and a pair of fixing pins are arranged on the other. The waist-shaped holes and the fixing pins cooperate to allow the cross arm to rotate relative to the slider. The cross arm is fixed relative to the slider by a cross arm gasket and a locking bolt.

5. The automobile shock absorber spring disassembly and assembly tool according to claim 1, characterized in that: The shock absorber support assembly comprises a support vertical rod, a support cross rod and a shock absorber support platform. The support cross rod is slidably mounted on the support vertical rod, and the shock absorber support platform is movably mounted on the support cross rod.

6. The automobile shock absorber spring disassembly and assembly tool according to claim 5, characterized in that: A vertical adjustment screw and a horizontal adjustment screw are installed on the shock absorber support, and a slide groove is provided on the upper end surface of the support cross bar for limiting the horizontal movement of the shock absorber support.

7. The automobile shock absorber spring disassembly and assembly tool according to claim 1, characterized in that: The clamping assembly includes a mounting plate and a clamping plate. The clamping assembly is installed on the support frame through the mounting plate. The clamping plate includes a fixed clamping plate and a rotating clamping plate. The support column and the shock absorber support assembly are both installed on the fixed clamping plate. A clamping position is formed between the fixed clamping plate and the rotating clamping plate.

8. The automobile shock absorber spring disassembly and assembly tool according to claim 7, characterized in that: The clamping assembly also includes a fine-tuning screw and a locking screw, which are respectively located at both ends of the clamping plate. The fine-tuning screw includes a hand-adjusting nut and a screw. One end of the screw is slidably fixed on the fixed clamping plate, and the other end is rotatably installed with a rotating clamping plate. One end of the locking screw is slidably fixed on the rotating clamping plate, and the other end is a locking head. A groove is provided on the side of the fixed clamping plate facing away from the rotating clamping plate for cooperating with the locking head.

9. The automobile shock absorber spring disassembly and assembly tool according to claim 5, characterized in that: The support vertical rod is provided with a plurality of fixing holes spaced apart in the height direction of the support vertical rod, and the support cross rod is provided with a group of mounting holes, which are matched with different fixing holes to adjust the mounting height of the support cross rod.

10. The automobile shock absorber spring disassembly and assembly tool according to claim 1, characterized in that: The support column is a hollow structure, the driving assembly includes a screw rod rotatably installed inside the support column, the slider includes a connecting rod and a threaded barrel inside the slider, the connecting rod is fixed between the threaded barrel and the inner wall of the slider, the threaded barrel is threadedly connected to the screw rod, and a sliding groove for the connecting rod to slide through is opened on the side wall of the support column.

Images