Leakage-proof sealing structure of hydraulic element

Abstract

The utility model discloses a leakproof sealing structure of a hydraulic element, and relates to the technical field of leakproof sealing. The device comprises a hydraulic cylinder, a sleeve is slidably connected to the side face of the hydraulic cylinder, a stress rod is slidably connected to the interior of the sleeve, and a sealing device is arranged on the circumferential face of the sleeve. The sealing device comprises a first O-shaped sealing ring, the interior of the first O-shaped sealing ring is fixedly connected to the circumferential surface of the sleeve, and the circumferential surface of the sleeve is fixedly connected with a second O-shaped sealing ring; through the movement of the sleeve and the mutual cooperation of the first O-shaped sealing ring, the second O-shaped sealing ring, the spring telescopic clamping block, the first groove, the second groove, the clamping groove, the push plate and other components in the sealing device, the movement of the first O-shaped sealing ring and the movement of the spring telescopic clamping block are realized; therefore, the first O-shaped sealing ring and the second O-shaped sealing ring enter the first groove and the second groove, and the sealing effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-leakage sealing, and particularly relates to an anti-leakage sealing structure for hydraulic components. Background Technique

[0002] Hydraulic components are key components for controlling the movement and operation of construction machinery. Due to the complex structure, harsh working conditions, and variable working environments and media of construction machinery, during the process of withstanding repeated hydraulic shocks, hydraulic components are extremely prone to leakage of working oil, mainly manifested as oil seepage at the mating surface of the end face, which greatly affects the reliability of the product and the user's loyalty to use.

[0003] According to a disclosed anti-leakage sealing structure for hydraulic components (publication number: CN 209557388 U), which includes a convex body, a fixing device, and an oil removal device. In this anti-leakage sealing structure for hydraulic components of the utility model, by arranging the fixing device on the outside of the outer ring, applying a downward pressure to the top surface of the first fixing ring, the connecting ring is vertically inserted into the placement groove, and the sphere rotates and is fixed in the concave surface while the first fixing ring and the second fixing ring are fixedly connected, thereby fixing the sealing device on the component, solving the problem that the installation and fixation of the sealing structure are not convenient enough. By arranging the oil removal device at the inner bottom end of the connecting ring, the oil on the end face of the inner ring is conveyed into the connecting pipe through the connecting hole, and then conveyed into the oil collecting tank through the connecting pipe for collection, and the sponge block absorbs the oil that has not been collected, solving the problem that the sealing effect is not ideal and there is still anti-leakage.

[0004] However, the above application, through the cooperation of the convex body, the fixing device, and the oil removal device components, makes it impossible to feed and discharge the hydraulic component, resulting in the inability to replace the internal liquid of the hydraulic component. Therefore, we propose an anti-leakage sealing structure for hydraulic components that can feed and discharge the hydraulic component. Content of the Utility Model

[0005] The purpose of the utility model is to provide an anti-leakage sealing structure for hydraulic components. Through the cooperation of components such as the movement of the material blocking block and the feeding port, the material conveying pipe, the material blocking block, the pull ring, the discharging port, the discharging pipe, the discharging opening, the discharging pipe, the blocking block, and the handle inside the feeding and discharging device, the movement of the material blocking block and the movement of the blocking block are realized, so that by removing the material blocking block and feeding into the hydraulic cylinder, the feeding function is achieved, and the existing problems are solved.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model relates to a leakage-proof sealing structure for a hydraulic component, which comprises a hydraulic cylinder. A sleeve is slidably connected to the side surface of the hydraulic cylinder. A force-bearing rod is slidably connected to the inside of the sleeve. A sealing device is arranged on the circumferential surface of the sleeve;

[0008] The sealing device includes a first O-ring. The inside of the first O-ring is fixedly connected to the circumferential surface of the sleeve. A second O-ring is fixedly connected to the circumferential surface of the sleeve. A spring telescopic block is fixedly connected to the circumferential surface of the sleeve. A first groove is formed in the inside of the hydraulic cylinder. A second groove is formed in the inside of the hydraulic cylinder. A clamping groove is formed in the inside of the hydraulic cylinder.

[0009] Further, a push plate is fixedly connected to the side surface of the force-bearing rod. A sealing block is fixedly connected to the circumferential surface of the force-bearing rod. The circumferential surface of the sealing block is slidably connected to the inside of the sleeve. The function of the sealing block is to prevent the liquid in the hydraulic cylinder from leaking out.

[0010] Further, a spring is fixedly connected to the side surface of the sealing block. The end of the spring far away from the sealing block is fixedly connected to the inner wall of the sleeve. The function of the spring is to enable the force-bearing rod to reset by using the spring when the force-bearing rod is not pushed.

[0011] Further, the shape of the spring telescopic block is set to be rectangular and the side surface of the spring telescopic block is set to be inclined. The number of the spring telescopic blocks and the clamping grooves are respectively set to be two and are circumferentially arranged in an array along the circumferential surface of the sleeve. The reason why the shape of the spring telescopic block is set to be rectangular and the side surface of the spring telescopic block is set to be inclined is to enable it to enter and come out of the clamping groove better. The reason why the number of the spring telescopic blocks and the clamping grooves are respectively set to be two and are circumferentially arranged in an array along the circumferential surface of the sleeve is to fix the sleeve better.

[0012] Further, a feeding and discharging device is arranged in the inside of the hydraulic cylinder. The feeding and discharging device includes a feeding port which is opened at the top of the hydraulic cylinder. A feeding pipe is formed in the inside of the hydraulic cylinder. A material blocking block is slidably connected to the top of the feeding pipe. A pull ring is fixedly connected to the top of the material blocking block. The function of the pull ring is to enable the material blocking block to be pulled out of the feeding pipe better.

[0013] Further, a blanking port is formed in the inside of the hydraulic cylinder. A blanking pipe is formed in the inside of the hydraulic cylinder. A discharging port is formed in the inside of the hydraulic cylinder. A discharging pipe is formed in the inside of the hydraulic cylinder. The function of the discharging port is to store the material entering from the blanking port. The function of the discharging pipe is to enable the material entering the discharging port to come out.

[0014] Furthermore, a plug is slidably connected inside the discharge pipe. A handle is fixedly connected to the front side of the plug. The function of the plug slidably connected inside the discharge pipe is to block the discharge pipe when there is no material discharge, so that the material does not flow out.

[0015] Furthermore, the feed inlet is located above the discharge opening. The function of the feed inlet being located above the discharge opening is to facilitate better material discharge.

[0016] The present utility model has the following beneficial effects:

[0017] Through the mutual cooperation of components such as the movement of the sleeve and the first O-ring, second O-ring, spring telescopic block, first groove, second groove, card slot, and push plate inside the sealing device in the present utility model, the movement of the first O-ring and the spring telescopic block is realized, so that the first O-ring and the second O-ring enter the first groove and the second groove, achieving a sealing effect.

[0018] Through the cooperation of components such as the movement of the material blocking block and the feed inlet, material conveying pipe, material blocking block, pull ring, discharge opening, discharge pipe, plug, handle, etc. inside the feeding and discharging device in the present utility model, the movement of the material blocking block and the plug is realized, so that the material blocking block is removed and the hydraulic cylinder is fed, achieving the function of feeding.

[0019] Of course, when implementing any product of the present utility model, it is not necessarily required to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a three-dimensional external structure schematic diagram of the present utility model;

[0022] Figure 2 is a three-dimensional overall structure schematic diagram of the sealing device of the present utility model;

[0023] Figure 3 is a three-dimensional overall structure schematic diagram of the feeding and discharging device of the present utility model;

[0024] Figure 4 is of the present utility model Figure 2 three-dimensional enlarged structure schematic diagram of A therein;

[0025] Figure 5 is of the present utility modelFigure 3 Three-dimensional enlarged structural schematic diagram of B in

[0026] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0027] 1. Hydraulic cylinder; 2. Sleeve; 3. Force-bearing rod; 4. Sealing device; 41. First O-ring; 42. Second O-ring; 43. Spring expansion block; 44. First groove; 45. Second groove; 46. Card slot; 47. Push plate; 48. Sealing block; 49. Spring; 5. Feeding and discharging device; 51. Feeding port; 52. Feeding pipe; 53. Baffle block; 54. Pull ring; 55. Discharging port; 56. Discharging pipe; 57. Material discharging port; 58. Discharge pipe; 59. Plug; 510. Handle. Specific implementation mode

[0028] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1

[0030] As Figure 1 - Figure 2 , Figure 4 - Figure 5 shown, this embodiment proposes a leakage-proof sealing structure for hydraulic components, including a hydraulic cylinder 1. The side of the hydraulic cylinder 1 is slidably connected with a sleeve 2. The inside of the sleeve 2 is slidably connected with a force-bearing rod 3. The circumferential surface of the sleeve 2 is provided with a sealing device 4;

[0031] The sealing device 4 includes a first O-ring 41. The inside of the first O-ring 41 is fixedly connected to the circumferential surface of the sleeve 2. The circumferential surface of the sleeve 2 is fixedly connected with a second O-ring 42. The circumferential surface of the sleeve 2 is fixedly connected with a spring expansion block 43. The inside of the hydraulic cylinder 1 is provided with a first groove 44, a second groove 45, and a card slot 46.

[0032] The side of the force-bearing rod 3 is fixedly connected with a push plate 47. The circumferential surface of the force-bearing rod 3 is fixedly connected with a sealing block 48. The circumferential surface of the sealing block 48 is slidably connected inside the sleeve 2. The function of the sealing block 48 is to prevent the liquid in the hydraulic cylinder 1 from leaking out.

[0033] The side of the sealing block 48 is fixedly connected with a spring 49. The end of the spring away from the sealing block 48 is fixedly connected to the inner wall of the sleeve 2. The function of the spring 49 is to enable the force-bearing rod 3 to reset by using the spring 49 when the force-bearing rod 3 is not pushed.

[0034] The shape of the spring telescopic clamping block 43 is set as a rectangle, and the side surface of the spring telescopic clamping block 43 is set as an inclined surface. The number of the spring telescopic clamping blocks 43 and the clamping grooves 46 are respectively set as two and are circumferentially arrayed along the circumferential surface of the sleeve 2. The reason why the shape of the spring telescopic clamping block 43 is set as a rectangle and the side surface of the spring telescopic clamping block 43 is set as an inclined surface is to enter and exit the clamping groove 46 better. The reason why the number of the spring telescopic clamping blocks 43 and the clamping grooves 46 are respectively set as two and are circumferentially arrayed along the circumferential surface of the sleeve 2 is to fix the sleeve 2 better.

[0035] In this embodiment, first, when the user needs to use the component, the sleeve 2 can be pushed to move into the hydraulic cylinder 1. When the sleeve 2 moves into the hydraulic cylinder 1, it will drive the first O-ring 41 and the second O-ring 42 to move forward, and at the same time, it will also drive the spring telescopic clamping block 43 to move forward. When the first O-ring 41 and the second O-ring 42 are moved into the first groove 44 and the second groove 45, the sleeve 2 is rotated. When the sleeve 2 rotates, it will drive the spring telescopic clamping block 43 to rotate, so that the spring telescopic block can be clamped into the clamping groove 46. When the force-bearing rod 3 is pushed, it will drive the push plate 47 to push the liquid in the hydraulic cylinder 1, and at the same time, it will also drive the sealing block 48 to move, so as to prevent the liquid from leaking out. When the force-bearing rod 3 is not pushed, the force-bearing rod 3 will reset by the elastic force of the spring 49.

[0036] Embodiment 2

[0037] As Figure 2 - Figure 3 、 Figure 5 shown, based on the same concept as the above Embodiment 1, this embodiment also proposes that a feeding and discharging device 5 is arranged inside the hydraulic cylinder 1. The feeding and discharging device 5 includes a feeding port 51, and the feeding port 51 is opened at the top of the hydraulic cylinder 1. A feeding pipe 52 is opened inside the hydraulic cylinder 1. A material blocking block 53 is slidably connected to the top of the feeding pipe 52. A pull ring 54 is fixedly connected to the top of the material blocking block 53. The function of the pull ring 54 is to pull out the material blocking block 53 from the feeding pipe 52 better.

[0038] A discharging port 55 is opened inside the hydraulic cylinder 1. A discharging pipe 56 is opened inside the hydraulic cylinder 1. A discharging opening 57 is opened inside the hydraulic cylinder 1. A discharging pipe 58 is opened inside the hydraulic cylinder 1. The function of the discharging opening 57 is to store the material entering from the discharging port 55. The function of the discharging pipe 58 is to make the material entering the discharging opening 57 come out.

[0039] A blocking block 59 is slidably connected to the inside of the discharging pipe 58. A handle 510 is fixedly connected to the front side of the blocking block 59. The reason why the blocking block 59 is slidably connected to the inside of the discharging pipe 58 is to block the discharging pipe 58 to prevent the material from flowing out when not discharging.

[0040] The feed inlet 51 is located above the discharge opening 55. The function of the feed inlet 51 being located above the discharge opening 55 is to facilitate better discharging of materials.

[0041] In this embodiment, when it is necessary to feed the inside of the hydraulic cylinder 1, the baffle block 53 can be pulled out by pulling the pull ring 54, and the material can enter the hydraulic cylinder 1 along the material conveying pipe 52 from the feed inlet 51, thereby achieving the effect of feeding the inside of the hydraulic cylinder 1. When it is necessary to discharge the liquid inside the hydraulic cylinder 1, the plug 59 is pulled out of the discharge pipe 58 by the handle 510, and the liquid in the hydraulic cylinder 1 will enter the discharge opening 57 along the discharge opening 55 and the discharge pipe 56. The material in the discharge opening 57 will flow out along the discharge pipe 58, thereby achieving the effect of discharging the liquid inside the hydraulic cylinder 1.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hydraulic element anti-leakage sealing structure, comprising a hydraulic cylinder (1), characterized in that: The side of the hydraulic cylinder (1) is slidably connected to a sleeve (2), the interior of the sleeve (2) is slidably connected to a force-bearing rod (3), and the circumferential surface of the sleeve (2) is provided with a sealing device (4); The sealing device (4) comprises a first O-ring (41), the interior of the first O-ring (41) is fixedly connected to the circumferential surface of the sleeve (2), the circumferential surface of the sleeve (2) is fixedly connected to a second O-ring (42), the circumferential surface of the sleeve (2) is fixedly connected to a spring telescopic clamp (43), the interior of the hydraulic cylinder (1) is provided with a first groove (44), the interior of the hydraulic cylinder (1) is provided with a second groove (45), and the interior of the hydraulic cylinder (1) is provided with a clamping groove (46).

2. A hydraulic component anti-leakage sealing structure according to claim 1, characterized in that: A push plate (47) is fixedly connected to the side of the force-bearing rod (3), a sealing block (48) is fixedly connected to the circumferential surface of the force-bearing rod (3), and the circumferential surface of the sealing block (48) is slidably connected to the interior of the sleeve (2).

3. A hydraulic component anti-leakage sealing structure according to claim 2, characterized in that: A spring (49) is fixedly connected to the side of the sealing block (48), and one end of the spring away from the sealing block (48) is fixedly connected to the inner wall of the sleeve (2).

4. A hydraulic component anti-leakage sealing structure according to claim 3, characterized in that: The shape of the spring telescopic block (43) is set to be a rectangle and the side surface of the spring telescopic block (43) is set to be an inclined surface. The number of the spring telescopic block (43) and the card slot (46) is respectively set to two and arranged in a circular array along the circumferential surface of the sleeve (2).

5. A hydraulic component anti-leakage sealing structure according to claim 4, characterized in that: A material inlet and outlet device (5) is provided inside the hydraulic cylinder (1), and the material inlet and outlet device (5) comprises a material inlet (51), and the material inlet (51) is opened at the top of the hydraulic cylinder (1). A material delivery pipe (52) is opened inside the hydraulic cylinder (1), and a material blocking block (53) is slidably connected to the top of the material blocking block (53), and a pull ring (54) is fixedly connected to the top of the material blocking block (53).

6. A hydraulic component anti-leakage sealing structure according to claim 5, characterized in that: The hydraulic cylinder (1) is provided with a discharge port (55) inside, a discharge pipe (56) inside, a discharge port (57) inside, and a discharge pipe (58) inside.

7. A hydraulic component anti-leakage sealing structure according to claim 6, characterized in that: A blocking block (59) is slidably connected inside the discharge pipe (58), and a handle (510) is fixedly connected to the front side of the blocking block (59).

8. The anti-leakage sealing structure of a hydraulic component according to claim 7, characterized in that: The feed port (51) is located above the discharge port (55).

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