A special fixture for welding ring of shock absorber

Abstract

The present application belongs to the field of locomotive accessory detection, and particularly relates to a special clamp for a shock absorber welding ring. The device comprises a jacking oil cylinder, a clamping body, a jacking pressure head and a profiling block. The jacking oil cylinder is installed on the upper portion of the clamping body, the output end of the jacking oil cylinder is in driving connection with the jacking pressure head through the clamping body, the jacking pressure head is in surface contact connection with the shock absorber lifting ring, and one side of the profiling block is rotatably connected with the clamping body and the side away from the clamping body is in surface contact connection with the shock absorber lifting ring. The device can adapt to the non-parallel error of the shock absorber lifting ring when clamping the manually welded shock absorber, and adapt to the error angle of the lifting ring, thereby solving the problem of inaccurate test data.

Description

Technical Field

[0001] This invention relates to the field of locomotive parts testing, specifically to a special fixture for shock absorber welding rings. Background Technology

[0002] There are many types of ring-connected hydraulic vibration dampers. Standards stipulate that each batch of newly manufactured hydraulic vibration dampers must undergo factory inspection. Traditional ring-connected vibration dampers use mechanical clamping fixtures. When installing the vibration damper using this type of fixture, the rubber bushings at both ends of the hydraulic vibration damper need to be removed. The clamping screws at both ends of the fixture are used to hold the inner holes of the rings at both ends of the damper. Different screws are used for different samples, and manual mechanical tightening is required. The disadvantages are that the fixture is bulky, the tightening is not secure, and there is a large coaxial error. Another type of hydraulic vibration damper uses welded rings. The manual welding of the lugs introduces errors, and there are also errors in the welded rings at both ends of the damper. The parallelism of the welded ring axes at both ends is poor, resulting in a certain angle. Mechanical clamping fixtures cannot accommodate the angular deviation caused by welding, affecting the repeatability of test data.

[0003] To address the aforementioned problems, a special clamp for welding rings of vibration dampers is proposed. Summary of the Invention

[0004] This invention addresses the problems mentioned above by designing a special fixture for the welding ring of a vibration damper. This fixture can adapt to the angle error of the lifting ring through a rotatable contour block and a clamping head equipped with a thrust joint bearing, ensuring that the piston and cylinder of the vibration damper are coaxial and that the loading center lines of the vibration damper and the testing machine are coaxial during the test.

[0005] To achieve the above objectives, the present invention provides a special clamp for a shock absorber welding ring, comprising a clamping cylinder, a clamping body, a clamping pressure head, and a contour block. The clamping cylinder is mounted on the upper part of the clamping body, and the output end of the clamping cylinder passes through the clamping body and is drivenly connected to the clamping pressure head. The clamping pressure head is in contact with the surface of the shock absorber ring. One side of the contour block is rotatably connected to the clamping body, and the side away from the clamping body is in contact with the surface of the shock absorber ring.

[0006] Furthermore, the clamping head is connected to the output end of the clamping cylinder via a thrust joint bearing. The thrust joint bearing allows the clamping head to rotate and adjust its angle under clamping action to adapt to the angle deviation of the lifting ring.

[0007] Furthermore, the clamp itself is U-shaped.

[0008] Furthermore, the clamping body includes an installation part and a clamping part. There are two clamping parts, which are respectively vertically fixedly connected to both sides of the installation part. A clamping cylinder is provided on the side of the installation part away from the clamping part. The contour block is rotatably connected to the clamping part.

[0009] Furthermore, the clamping part has a through hole, and a rotating shaft is provided at the through hole. The contouring part is rotatably connected to the rotating shaft.

[0010] Furthermore, the contour block includes a clamping block and a reinforcing plate. There are two clamping blocks, which are vertically fixedly connected to both sides of the reinforcing plate. The outer side of the clamping block is rotatably connected to the clamping body, and the inner side is in contact with the shock absorber. The reinforcing plate and the clamping block form an integral whole, which makes the contour block more rigid.

[0011] Furthermore, the contour block also includes a contour fitting portion, which is located at the contact point between the clamping block and the shock absorber ring. This fitting portion is an arc-shaped structure adapted to the outer surface of the shock absorber ring, allowing for a tighter fit with the outer surface of the ring and improving the clamping effect.

[0012] Furthermore, the contour block also includes a limiting part, which is disposed at the connection between the reinforcing plate and the clamping block and on the side near the contour fitting part. The limiting part is used to assist the lifting ring in installation.

[0013] The contour block is rotatably connected to the U-shaped clamp body, allowing it to rotate relative to the clamp body to accommodate the angular error of the lifting ring.

[0014] Furthermore, the clamping cylinder is a double-acting cylinder, which can quickly clamp and release the damper sample.

[0015] This invention also proposes a method for using a special fixture for welding rings of vibration dampers, comprising the following steps:

[0016] Step 1: Select a contour block that matches the size of the shock absorber lifting ring to be tested, and rotatably connect the contour block to the clamping part of the clamping body via a rotating shaft;

[0017] Step 2: Install a thrust spherical bearing at the output end of the clamping cylinder, and install a clamping pressure head at the end of the thrust spherical bearing furthest from the clamping cylinder;

[0018] Step 3: Install the clamping cylinder on the upper surface of the mounting part of the clamping body, and extend the output end and the clamping head into the interior of the clamping body;

[0019] Step 4: Install the tightening cylinder on the testing machine, place the damper lifting ring below the tightening head and fit it against the limiting part on the contour block, start the tightening cylinder, press down the damper lifting ring, and squeeze the damper lifting ring to fit and tighten it against the contour fitting part on the contour block;

[0020] Step 5: Repeat the above steps to complete the clamping of the other end of the shock absorber. After clamping both ends, start the testing machine to record the data.

[0021] In summary, the special clamp for welding rings of vibration dampers according to the present invention has the following advantages and beneficial technical effects:

[0022] 1. The present invention provides a special clamp for a vibration damper welding ring, which can adapt to the welding angle error of the vibration damper welding ring itself by using a clamping head and a contour block;

[0023] 2. The present invention provides a special clamp for welding rings of shock absorbers, which can improve the coaxiality of the shock absorber piston and the cylinder barrel of the clamping cylinder;

[0024] 3. The special fixture for welding rings of dampers provided by this invention can improve the coaxiality of the damper piston and the loading center line of the testing machine during testing;

[0025] 4. The present invention provides a special fixture for welding rings of vibration dampers, which enables more accurate testing data of vibration dampers and improves product quality. Attached Figure Description

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a front view of the installation of a special clamp for a vibration damper welding ring according to the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of a special clamp for welding rings of vibration dampers according to the present invention;

[0029] Figure 3 This is a schematic diagram of the lifting ring angle deviation of the vibration damper in this invention;

[0030] Figure 4 This is a cross-sectional view of a special clamp for welding rings of vibration dampers according to the present invention;

[0031] Figure 5 This is a schematic diagram of the profile block of a special clamp for welding rings of a vibration damper according to the present invention.

[0032] The reference numerals in the attached figures are:

[0033] 1-Tightening cylinder; 2-Clamping body; 21-Mounting part; 22-Clamping part; 3-Tightening pressure head; 4-Thrust joint bearing; 5-Following block; 51-Following fitting part; 52-Limiting part; 53-Reinforcing plate; 54-Clamping block; 6-Rotating shaft; 7-Shock absorber lifting ring. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout; the described embodiments are some embodiments of this invention, but not all embodiments; the embodiments and directional terms described below with reference to the accompanying drawings are exemplary and intended to explain this invention, and should not be construed as limiting this invention; all other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. The embodiments of this invention will be described in detail below with reference to the accompanying drawings:

[0035]

Example 1

[0036] like Figure 1 and Figure 2 As shown, a special clamp for welding rings of shock absorbers includes: a clamping cylinder 1, a clamping body 2, a clamping pressure head 3, and a contour block 5. The clamping cylinder 1 is installed on the upper part of the clamping body 2. The output end of the clamping cylinder 1 passes through the clamping body 2 and is driven to connect with the clamping pressure head 3. The clamping pressure head 3 is in contact with the surface of the shock absorber ring 7, and the contact surface of the clamping pressure head 3 is arc-shaped. One side of the contour block 5 is rotatably connected to the clamping body 2, and the side away from the clamping body 2 is in contact with the surface of the shock absorber ring 7.

[0037] Preferably, the clamping cylinder is a double-acting cylinder, and the clamping head 3 is driven to the output end of the clamping cylinder 1 through the thrust joint bearing 4.

[0038] like Figure 4 As shown, preferably, the clamping body 2 has a U-shaped structure, the clamping head 3 passes through the mounting plate 21, the clamping cylinder 1 is connected to the mounting plate 21 by bolts, and holes are opened on both clamping parts 22.

[0039] like Figure 4 and Figure 5 As shown, preferably, the reinforcing plate 53 and two clamping blocks 54 form a contour block 5. The clamping blocks 54 are located on both sides of the reinforcing plate 53 and are perpendicular to the reinforcing plate 53. The contour block 5 is integrally formed.

[0040] The clamping block 54 has a non-through hole on its outer side. The rotating shaft 6 passes through the hole on the clamping part 22 and connects it to the clamping block 54. After connection, the contour block 5 can rotate relative to the clamping body 2 via the rotating shaft 6.

[0041] Preferably, the inner side of the clamping block 54 is provided with an arc-shaped conforming fitting part 51, which matches the outer surface of the shock absorber ring 7, and each type of shock absorber ring 7 corresponds to a different size conforming block 5.

[0042] Preferably, a limiting part 52 is provided at the connection between the reinforcing plate 53 and the clamping block 54 and on the side near the contour fitting part 51, and the limiting part 52 is integrally formed with the contour block 5.

[0043] The same arrangement is present on the lifting rings at both ends of the shock absorber.

[0044]

Example 2

[0045] The method of using the special clamp for welding rings of vibration dampers according to the present invention is as follows:

[0046] Step 1: Select a contour block 5 that matches the size of the shock absorber lifting ring 7 to be tested, and rotatably connect the contour block 5 to the clamping part 22 of the clamp body 2 via the rotating shaft 6.

[0047] Step 2: Install the thrust joint bearing 4 at the output end of the clamping cylinder 1, and install the clamping pressure head 3 at the end of the thrust joint bearing 4 away from the clamping cylinder 1;

[0048] Step 3: Install the clamping cylinder 1 on the upper surface of the mounting part 21 of the clamp body 2, and extend the output end and the clamping head 3 into the interior of the clamp body 2;

[0049] Step 4: Install the tightening cylinder 1 on the testing machine, place the damper lifting ring 7 under the tightening head 3 and attach it to the limiting part 52 on the contour block 5, start the tightening cylinder 1, press down the damper lifting ring 7, and squeeze the damper lifting ring 7 to fit and press it against the contour fitting part 51 on the contour block 5.

[0050] Step 5: Repeat the above steps to complete the clamping of the other end of the shock absorber. After clamping both ends, start the testing machine to record the data.

[0051] like Figure 3 As shown, the shock absorber lifting ring has an angular error. Through the above steps, under the dual action of the clamping head 3 and the contour block 5, the fixture in this application can adapt to the angular error.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A special clamp for welding rings of vibration dampers, characterized in that, include: The clamping cylinder (1), clamp body (2), clamping head (3), and contour block (5) are installed on the upper part of the clamp body (2). The output end of the clamping cylinder (1) passes through the clamp body (2) and is driven to connect with the clamping head (3). The clamping head (3) is in contact with the surface of the shock absorber ring (7), and the contact surface of the clamping head (3) is arc-shaped. One side of the contour block (5) is rotatably connected to the clamp body (2), and the side away from the clamp body (2) is in contact with the surface of the shock absorber ring (7). The contour block (5) includes a clamping block (54) and a reinforcing plate (53). There are two clamping blocks (54), which are vertically fixed to both sides of the reinforcing plate (53). The outer side of the clamping block (54) is rotatably connected to the clamping body (2), and the inner side is in contact with the shock absorber lifting ring (7). The contour block (5) also includes a contour fitting part (51), which is located at the contact connection between the clamping block (54) and the shock absorber ring (7), and is an arc-shaped structure adapted to the outer surface of the shock absorber ring (7). The contour block also includes a limiting part (52), which is located at the connection between the reinforcing plate (53) and the clamping block (54) and is close to the contour fitting part (51) on one side.

2. The special clamp for welding rings of vibration dampers according to claim 1, characterized in that, The clamping head (3) is connected to the output end of the clamping cylinder (1) via a thrust joint bearing (4).

3. A special clamp for welding rings of vibration dampers according to claim 1, characterized in that, The clamp body (2) is U-shaped.

4. A special clamp for welding rings of vibration dampers according to claim 3, characterized in that, The clamping body (2) includes an installation part (21) and a clamping part (22). There are two clamping parts (22), which are respectively vertically fixedly connected to both sides of the installation part (21). A clamping cylinder (1) is provided on the side of the installation part (21) away from the clamping part (22). The contour block (5) is rotatably connected to the clamping part (22).

5. A special clamp for welding rings of vibration dampers according to claim 4, characterized in that, The clamping part (22) has a through hole, and a rotating shaft (6) is provided at the through hole. The contour block (5) is rotatably connected to the rotating shaft (6).

6. A special clamp for welding rings of vibration dampers according to claim 1, characterized in that, The clamping cylinder (1) is a double-acting cylinder.

7. The method of using a special clamp for welding rings of vibration dampers according to claim 1, characterized in that, Includes the following steps: Step 1: Select a contour block (5) that matches the size of the shock absorber lifting ring (7) to be tested, and rotatably connect the contour block (5) to the clamping part (22) of the clamping body (2) via the rotating shaft (6); Step 2: Install a thrust joint bearing (4) at the output end of the clamping cylinder (1), and install a clamping head (3) at the end of the thrust joint bearing (4) away from the clamping cylinder (1). Step 3: Install the clamping cylinder (1) on the upper surface of the mounting part (21) of the clamp body (2), and extend the output end and the clamping head (3) into the interior of the clamp body (2); Step 4: Install the tightening cylinder (1) on the testing machine, place the damper lifting ring (7) below the tightening head (3) and attach it to the limiting part (52) on the contour block (5), start the tightening cylinder (1), press down the damper lifting ring (7), and squeeze the damper lifting ring (7) to fit and press it against the contour fitting part (51) on the contour block (5); Step 5: Repeat the above steps to complete the clamping of the other end of the shock absorber. After clamping both ends, start the testing machine to record the data.

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