Seal installation aid for hydraulic cylinder repair

Abstract

The utility model provides a sealing piece installation auxiliary tool suitable for hydraulic cylinder maintenance belongs to hydraulic cylinder maintenance technical field to solve the problem that staff is easy because of experience deficiency or operation failure leads to repeated operation, influences the sealing ring replacement efficiency, including the hugger main part, swings and tightens the pole, slide limit pole, position restriction hole, damping elastic part and guide installation box, swing and tightens the pole is hinged in the left side of hugger main part, slide limit pole is connected in the front side of hugger main part, position restriction hole is set up in the left side of swing and tightens the pole, the front fixed connection of damping elastic part is connected in the front side of slide limit pole, guide installation box fixed connection is in hugger main part's front and back both sides, the utility model avoids the problem that staff is not experienced or operation failure leads to the problem of insufficient tight time, reduces repeated operation, and greatly improves the sealing ring replacement efficiency and hydraulic cylinder overall maintenance efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic cylinder repair technology, and more specifically, it relates to an auxiliary tool for installing seals suitable for the repair of hydraulic cylinders. Background Technology

[0002] When replacing the hydraulic cylinder plunger rod sealing ring, the old sealing ring needs to be removed using an oil seal hook. Then, the new sealing ring is placed on the outside of the plunger rod. If the installed sealing ring is relatively loose, first place the stainless steel band of the oil seal clamp on the outside of the sealing ring, tighten the knob to make the stainless steel band tighten and firmly bind the outside of the sealing ring, and keep it in a tight state for a certain period of time. Then, remove the oil seal clamp, and the sealing ring will fit against the plunger rod and be tightened.

[0003] For example, CN215333735U discloses an ultra-high pressure sealing ring for a hydraulic cylinder plunger rod, including a cylinder body. The cylinder body has an air chamber, and the outer wall of the cylinder body has a connecting plate. The connecting plate has symmetrical through holes. The connecting plate has a slot and an adjustment slot communicating with the through holes. The adjustment slot has a limiting slot. An adjustment rod is movably connected in the adjustment slot. The outer wall of the adjustment rod has a limiting plate. A first spring is fixed between the limiting plate and the adjustment slot. A sealing component is movably connected to the left end of the connecting plate. This device, by setting a detachable sealing component at the left end of the cylinder body, allows for convenient maintenance, replacement, and lubrication of the components in the air chamber.

[0004] Based on the above, due to insufficient experience or operational errors, the tightening time of the oil seal clamp may be insufficient, affecting the installation effect of the sealing ring. This leads to the need for repeated operations, affecting the replacement efficiency of the sealing ring and consequently the maintenance efficiency of the hydraulic cylinder. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides an auxiliary tool for installing seals suitable for the maintenance of hydraulic cylinders. This tool solves the problem that insufficient tightening time of the oil seal clamp is easily caused by insufficient experience or operational errors by the operators, which affects the installation effect of the sealing ring, requires repeated operation by the operators, affects the replacement efficiency of the sealing ring, and consequently affects the maintenance efficiency of the hydraulic cylinder.

[0006] The purpose and effect of this utility model, which is an auxiliary tool for installing seals during the maintenance of hydraulic cylinders, are achieved by the following specific technical means: An auxiliary tool for installing seals for the maintenance of hydraulic cylinders includes a clamping body, a swinging tensioning rod, a sliding limit rod, position limiting holes, a limiting structure, a tightening structure, a damping elastic element, and a guide mounting box. The swinging tensioning rod is hinged to the left side of the clamping body. The sliding limit rod is slidably connected to the front side of the clamping body. Multiple position limiting holes are evenly distributed on the left side of the swinging tensioning rod. The limiting structure is located on the left side of the clamping body. The front end of the damping elastic element is fixedly connected to the front side of the sliding limit rod, and the rear end of the damping elastic element is fixedly connected to the front side of the clamping body. Two guide mounting boxes are provided, and the two guide mounting boxes are respectively fixedly connected to the front and rear sides of the clamping body. The tightening structure is located on the left side of the clamping body.

[0007] Furthermore, the limiting structure includes a V-shaped limiting block and a second reset elastic element; two V-shaped limiting blocks are provided, and the two V-shaped limiting blocks are slidably connected to the inner sides of the two guide mounting boxes respectively; two second reset elastic elements are provided, and the left ends of the two second reset elastic elements are fixedly connected to the right ends of the two V-shaped limiting blocks respectively, and the right ends of the two second reset elastic elements are fixedly connected to the right sides of the two guide mounting boxes respectively.

[0008] Furthermore, the limiting structure also includes a limiting connecting rod and a limiting support rod; two limiting connecting rods are provided, and the two limiting connecting rods are respectively fixedly connected to the outside of the two guide mounting boxes; two limiting support rods are provided, and the two limiting support rods are respectively threadedly connected to the inside of the two limiting connecting rods.

[0009] Furthermore, the tightening structure includes an operating knob and a steel strip winding rod; the steel strip winding rod is rotatably connected to the middle of the clamping device body; the operating knob is slidably connected to the outside of the steel strip winding rod.

[0010] Furthermore, the tightening structure also includes guide sliders and guide grooves; multiple guide sliders are provided, and the multiple guide sliders are circumferentially arrayed and fixedly connected to the inner side of the operating knob; multiple guide grooves are provided, and the multiple guide grooves are circumferentially arrayed and opened on the front side of the steel strip winding rod, and the multiple guide sliders are slidably connected to the multiple guide grooves respectively.

[0011] Furthermore, the tightening structure also includes a first reset elastic element and a limiting mounting plate; the front end of the first reset elastic element is fixedly connected to the front side of the operating knob, and the rear end of the first reset elastic element is fixedly connected to the front side of the steel strip winding rod; the limiting mounting plate is fixedly connected to the rear side of the operating knob.

[0012] Furthermore, the tightening structure also includes a position limiting pawl and a position limiting ratchet; the position limiting pawl is hinged to the front side of the limiting mounting plate; the position limiting ratchet is fixedly connected to the front side of the clamping body, and the position limiting pawl and the position limiting ratchet together form a ratchet transmission mechanism.

[0013] Furthermore, the tightening structure also includes a stainless steel strip and an engineering plastic pressure block; the engineering plastic pressure block is fixedly connected to the left side of the clamping device body; the lower end of the stainless steel strip is fixedly connected to the left side of the swing tightening rod, and the upper end of the stainless steel strip passes through the engineering plastic pressure block and is fixedly connected to the outside of the steel strip winding rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a second reset elastic element to ensure the V-shaped limiting block remains tightly fitted to the outer surface of the plunger rod during operation, guaranteeing concentricity between the clamping device and the plunger rod and preventing positioning deviations. The engineering plastic pressure block buffers the compressive force on the sealing ring and plunger rod, effectively preventing damage or deformation of the seal due to excessive local pressure, thus extending the seal's service life. The damping elastic element and sliding limiting rod form a delayed unlocking structure, avoiding the inconvenience of manual timing, reducing operational difficulty, and preventing insufficient tightening time due to operator inexperience or operational errors. This system ensures effective installation of the sealing ring, reduces repetitive operations, and significantly improves the efficiency of sealing ring replacement and overall hydraulic cylinder maintenance. The ratchet drive mechanism ensures that the stainless steel strip will not loosen on its own after tightening, further guaranteeing installation stability. Fine adjustments to the stainless steel strip are made by operating the swing tightening rod to ensure the tightening effect. The self-adaptive sliding characteristics of the V-shaped limit block allow the tool to be adapted to plunger rods of different diameters, improving the tool's versatility. The limit connecting rod and limit support rod provide stable support for the clamp, preventing angular displacement of the clamp when the swing tightening rod is turned, thus enhancing operational stability and safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram showing the disassembled structure of the main body of the clamping device, the swing tightening rod, the guide mounting box, and the V-shaped limiting block of this utility model.

[0017] Figure 3 This is a schematic diagram showing the positional relationship between the main body of the clamping device, the position limiting ratchet, and the stainless steel belt of this utility model.

[0018] Figure 4This is a schematic diagram showing the positional relationship between the operating knob, stainless steel strip, and engineering plastic pressure block of this utility model.

[0019] Figure 5 This is a schematic diagram showing the positional relationship between the guide slider and the guide groove of this utility model.

[0020] Figure 6 This is a schematic diagram showing the disassembled structure of the operating knob and the steel strip winding rod of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Clamping device body; 101. Operating knob; 102. Guide slider; 103. First reset elastic element; 104. Limiting mounting plate; 105. Position limiting pawl; 106. Position limiting ratchet; 107. Steel strip winding rod; 108. Guide groove; 109. Stainless steel strip; 110. Engineering plastic pressure block; 2. Swinging tightening rod; 3. Sliding limiting rod; 4. Position limiting hole; 5. Damping elastic element; 6. Guide mounting box; 601. V-shaped limiting block; 602. Second reset elastic element; 603. Limiting connecting rod; 604. Limiting support rod. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. Example

[0023] As attached Figure 1 To be continued Figure 3 As shown: This utility model provides an auxiliary tool for installing seals for the maintenance of hydraulic cylinders, including a clamping body 1, a swing tightening rod 2, a sliding limit rod 3, a position limiting hole 4, a limiting structure, a damping elastic element 5, and a guide mounting box 6; the swing tightening rod 2 is hinged to the left side of the clamping body 1; the sliding limit rod 3 is slidably connected to the front side of the clamping body 1; multiple position limiting holes 4 are provided, and the multiple position limiting holes 4 are evenly distributed on the left side of the swing tightening rod 2; the limiting structure is provided on the left side of the clamping body 1; the front end of the damping elastic element 5 is fixedly connected to the front side of the sliding limit rod 3, and the rear end of the damping elastic element 5 is fixedly connected to the front side of the clamping body 1; two guide mounting boxes 6 are provided, and the two guide mounting boxes 6 are respectively fixedly connected to the front and rear sides of the clamping body 1.

[0024] The limiting structure includes a V-shaped limiting block 601 and a second reset elastic element 602. Two V-shaped limiting blocks 601 are provided, and the two V-shaped limiting blocks 601 are slidably connected to the inner sides of the two guide mounting boxes 6 respectively. Two second reset elastic elements 602 are provided, and the left ends of the two second reset elastic elements 602 are fixedly connected to the right ends of the two V-shaped limiting blocks 601 respectively, and the right ends of the two second reset elastic elements 602 are fixedly connected to the right sides of the two guide mounting boxes 6 respectively.

[0025] The limiting structure also includes a limiting connecting rod 603 and a limiting support rod 604; there are two limiting connecting rods 603, which are fixedly connected to the outside of the two guide mounting boxes 6 respectively; there are two limiting support rods 604, which are threadedly connected to the inside of the two limiting connecting rods 603 respectively.

[0026] The specific usage and function of this embodiment are as follows: After the new sealing ring is installed on the outside of the hydraulic cylinder plunger rod, the stainless steel strip 109 is fitted onto the outside of the plunger rod. At this time, the second reset elastic element 602 will push the V-shaped limiting block 601, so that the V-shaped limiting block 601 is always in contact with the outer side of the plunger rod, ensuring that the clamping device and the plunger rod remain concentric during the tightening of the stainless steel strip 109. After being squeezed by the plunger rod, the V-shaped limiting block 601 will slide along the guide mounting box 6 until the limiting support rod 604 is in contact with the plunger rod. The V-shaped limiting block 601 can adapt to plunger rods of different diameters. Rotating the limiting support rod 604 can change the overall length of the limiting connecting rod 603 and the limiting support rod 604. To ensure the versatility of the clamp, after tightening the stainless steel strip 109, the stainless steel strip 109 can be finely adjusted by turning the swing tightening rod 2 to ensure the tightening effect of the stainless steel strip 109. At this time, the limiting connecting rod 603 and the limiting support rod 604 will be supported on the outside of the plunger rod to prevent the clamp angle from shifting when the swing tightening rod 2 is turned. After adjusting the position of the swing tightening rod 2, press the sliding limiting rod 3 so that the sliding limiting rod 3 is inserted into the corresponding position limiting hole 4. At this time, the damping elastic element 5 will drive the sliding limiting rod 3 to slowly return to its original position. After the sliding limiting rod 3 is completely moved out of the position limiting hole 4, it indicates that the clamping time is sufficient. The swing tightening rod 2 can be pushed back to its original position to facilitate the removal of the clamp. Example

[0027] As attached Figure 4 To be continued Figure 6 As shown: Based on Embodiment 1, a tightening structure is also included; the tightening structure is located on the left side of the clamping body 1.

[0028] The tightening structure includes an operating knob 101 and a steel strip winding rod 107; the steel strip winding rod 107 is rotatably connected to the middle of the clamping device body 1; the operating knob 101 is slidably connected to the outside of the steel strip winding rod 107.

[0029] The tightening structure also includes guide sliders 102 and guide grooves 108; multiple guide sliders 102 are provided, and multiple guide sliders 102 are circumferentially arrayed and fixedly connected to the inner side of the operating knob 101; multiple guide grooves 108 are provided, and multiple guide grooves 108 are circumferentially arrayed on the front side of the steel strip winding rod 107, and multiple guide sliders 102 are slidably connected to multiple guide grooves 108 respectively.

[0030] The tightening structure also includes a first reset elastic element 103 and a limiting mounting plate 104; the front end of the first reset elastic element 103 is fixedly connected to the front side of the operating knob 101, and the rear end of the first reset elastic element 103 is fixedly connected to the front side of the steel strip winding rod 107; the limiting mounting plate 104 is fixedly connected to the rear side of the operating knob 101.

[0031] The tightening structure also includes a position limiting pawl 105 and a position limiting ratchet 106; the position limiting pawl 105 is hinged to the front side of the limiting mounting plate 104; the position limiting ratchet 106 is fixedly connected to the front side of the clamping body 1, and the position limiting pawl 105 and the position limiting ratchet 106 together form a ratchet transmission mechanism.

[0032] The tightening structure also includes a stainless steel strip 109 and an engineering plastic pressure block 110; the engineering plastic pressure block 110 is fixedly connected to the left side of the clamping body 1; the lower end of the stainless steel strip 109 is fixedly connected to the left side of the swing tightening rod 2, and the upper end of the stainless steel strip 109 passes through the engineering plastic pressure block 110 and is fixedly connected to the outside of the steel strip winding rod 107.

[0033] The specific usage and function of this embodiment are as follows: When tightening the stainless steel strip 109, rotating the operating knob 101 causes the operating knob 101 to drive the steel strip winding rod 107 to rotate under the cooperation of the guide slider 102 and the guide groove 108. At this time, the steel strip winding rod 107 will wind up the excess stainless steel strip 109. At this time, the operating knob 101 will drive the limiting mounting plate 104 and the position limiting pawl 105 to rotate. When the position limiting pawl 105 rotates, it will slide inside the position limiting ratchet 106. When the position limiting pawl 105 reverses, the position limiting ratchet 106 will lock the position limiting pawl 105 to prevent it from reversing, thereby ensuring the tightening effect of the stainless steel strip 109. When it is necessary to loosen the stainless steel strip 109, pulling the operating knob 101 forward will cause the guide slider 102 to slide along the guide groove 108. At the same time, the limit mounting plate 104 and the position limiting pawl 105 will be pulled to move, causing the position limiting pawl 105 to disengage from the position limiting ratchet 106. At this time, the operating knob 101 and the steel strip winding rod 107 can be rotated in the opposite direction to loosen the stainless steel strip 109. After the stainless steel strip 109 is loosened, the operating knob 101 can be released. At this time, the restoring force of the first reset elastic element 103 will pull the operating knob 101 and the limit mounting plate 104 to reset, causing the position limiting pawl 105 to re-engage in the position limiting ratchet 106. The engineering plastic pressure block 110 can buffer the compressive force on the sealing ring and the plunger rod.

[0034] The following points should be noted in this article: 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0035] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0036] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.

Claims

1. An auxiliary tool for installing seals for the maintenance of hydraulic cylinders, comprising a clamping body (1), a swing tightening rod (2), a sliding limit rod (3), a position limiting hole (4), a limiting structure, a tightening structure, a damping elastic element (5), and a guide mounting box (6); the swing tightening rod (2) is hinged to the left side of the clamping body (1); characterized in that: The sliding limit rod (3) is slidably connected to the front side of the clamping device body (1); multiple position limiting holes (4) are provided, and the multiple position limiting holes (4) are evenly distributed on the left side of the swing tightening rod (2); the limiting structure is provided on the left side of the clamping device body (1); the front end of the damping elastic element (5) is fixedly connected to the front side of the sliding limit rod (3), and the rear end of the damping elastic element (5) is fixedly connected to the front side of the clamping device body (1); two guide mounting boxes (6) are provided, and the two guide mounting boxes (6) are respectively fixedly connected to the front and rear sides of the clamping device body (1); the tightening structure is provided on the left side of the clamping device body (1).

2. The auxiliary tool for installing seals for maintenance of hydraulic cylinders as described in claim 1, characterized in that: The limiting structure includes a V-shaped limiting block (601) and a second reset elastic element (602); two V-shaped limiting blocks (601) are provided, and the two V-shaped limiting blocks (601) are slidably connected to the inner sides of the two guide mounting boxes (6) respectively; two second reset elastic elements (602) are provided, and the left ends of the two second reset elastic elements (602) are fixedly connected to the right ends of the two V-shaped limiting blocks (601) respectively, and the right ends of the two second reset elastic elements (602) are fixedly connected to the right sides of the two guide mounting boxes (6).

3. The auxiliary tool for installing seals for maintenance of hydraulic cylinders as described in claim 2, characterized in that: The limiting structure further includes a limiting connecting rod (603) and a limiting support rod (604); there are two limiting connecting rods (603), and the two limiting connecting rods (603) are respectively fixedly connected to the outside of the two guide mounting boxes (6); there are two limiting support rods (604), and the two limiting support rods (604) are respectively threadedly connected to the inside of the two limiting connecting rods (603).

4. The auxiliary tool for installing seals for maintenance of hydraulic cylinders as described in claim 1, characterized in that: The tightening structure includes an operating knob (101) and a steel strip winding rod (107); the steel strip winding rod (107) is rotatably connected to the middle of the clamp body (1); the operating knob (101) is slidably connected to the outside of the steel strip winding rod (107).

5. The auxiliary tool for installing seals for the maintenance of hydraulic cylinders as described in claim 4, characterized in that: The tightening structure also includes guide sliders (102) and guide grooves (108); multiple guide sliders (102) are provided, and multiple guide sliders (102) are circumferentially arrayed and fixedly connected to the inner side of the operation knob (101); multiple guide grooves (108) are provided, and multiple guide grooves (108) are circumferentially arrayed and opened on the front side of the steel strip winding rod (107), and multiple guide sliders (102) are slidably connected to multiple guide grooves (108) respectively.

6. The auxiliary tool for installing seals for maintenance of hydraulic cylinders as described in claim 5, characterized in that: The tightening structure also includes a first reset elastic element (103) and a limiting mounting plate (104); the front end of the first reset elastic element (103) is fixedly connected to the front side of the operating knob (101), and the rear end of the first reset elastic element (103) is fixedly connected to the front side of the steel strip winding rod (107); the limiting mounting plate (104) is fixedly connected to the rear side of the operating knob (101).

7. The auxiliary tool for installing seals for maintenance of hydraulic cylinders as described in claim 6, characterized in that: The tightening structure also includes a position limiting pawl (105) and a position limiting ratchet (106); the position limiting pawl (105) is hinged to the front side of the limiting mounting plate (104); the position limiting ratchet (106) is fixedly connected to the front side of the clamping body (1), and the position limiting pawl (105) and the position limiting ratchet (106) together form a ratchet transmission mechanism.

8. The auxiliary tool for installing seals for maintenance of hydraulic cylinders as described in claim 7, characterized in that: The tightening structure also includes a stainless steel strip (109) and an engineering plastic pressure block (110); the engineering plastic pressure block (110) is fixedly connected to the left side of the clamping body (1); the lower end of the stainless steel strip (109) is fixedly connected to the left side of the swing tightening rod (2), and the upper end of the stainless steel strip (109) passes through the engineering plastic pressure block (110) and is fixedly connected to the outside of the steel strip winding rod (107).

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