Temporary device for oil leakage treatment of lower end cover of hydraulic hoist

Abstract

The utility model discloses a hydraulic hoist lower end cover oil leakage treatment temporary device which comprises a lower end cover oil leakage treatment temporary device body, the top of the lower end cover oil leakage treatment temporary device body and the bottom of a lower end cover of a hydraulic hoist are sealed, and the bottom of the lower end cover oil leakage treatment temporary device body and a piston rod of the hydraulic hoist are sealed. The lower end cover oil leakage treatment temporary device comprises two sets of main supporting semicircular rings which are symmetrically arranged, the two sets of main supporting semicircular rings are detachably connected to the periphery of a lower end cover and the periphery of a piston rod of the hydraulic hoist, and sealing layers are arranged in the main supporting semicircular rings. The device solves the problems that oil leakage of the lower end cover of the piston rod of the oil cylinder of the large hydraulic hoist cannot be simply treated and the leakage flow of oil cannot be measured, is simple to mount, can improve the defect treatment efficiency, provides a basis for quantitative analysis of the leakage flow of the oil, and provides important guarantee for maintenance, stability and operation of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic hoist maintenance and repair, and specifically refers to a temporary device for dealing with oil leakage at the lower end cover of a hydraulic hoist Background Technique

[0002] The hydraulic hoist of a hydropower station is an important actuator for opening and closing the gate. Due to various sealing forms inside the oil cylinder, among which the sealing in direct contact with the piston rod at the lower end cover is prone to deformation because the piston rod runs at the extreme position for a long time. Especially with the increase of the operation cycle, the sealing body also ages. Therefore, oil leakage often occurs at the joint between the lower end cover and the piston rod. In general, in case of oil leakage, the adjustment gasket inside the lower end cover of the oil cylinder is adjusted to compress the internal seal. However, due to the small margin of the gasket itself, once oil leakage still occurs after the adjustment gasket is taken out, the oil cylinder needs to be disassembled and replaced. This maintenance process is time-consuming and laborious, and at the same time, the operation risk is high, the cycle is long, the efficiency is low and the risk coefficient is high Content of the Utility Model

[0003] The utility model overcomes the shortcomings of the prior art and invents a temporary device for dealing with oil leakage at the lower end cover of a hydraulic hoist. Through the mutual cooperation of a simple semi-circular ring, special-shaped seals, V-shaped seals and a temporary scraping ring, a new sealing form is formed with the lower end cover to avoid continuous leakage of oil. At the same time, it has the function of temporarily collecting oil samples, and can accurately and quantitatively analyze the leakage amount of the lower end cover of the oil cylinder

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a temporary device for dealing with oil leakage at the lower end cover of a hydraulic hoist, including a temporary device for dealing with oil leakage at the lower end cover. The top of the temporary device for dealing with oil leakage at the lower end cover is sealed with the bottom of the lower end cover of the hydraulic hoist, and the bottom of the temporary device for dealing with oil leakage at the lower end cover is sealed with the piston rod of the hydraulic hoist. The temporary device for dealing with oil leakage at the lower end cover includes two groups of symmetrically arranged main support semi-circular rings, and the two groups of main support semi-circular rings are detachably connected to the outer peripheries of the lower end cover and the piston rod of the hydraulic hoist. A sealing layer is arranged inside the main support semi-circular rings

[0005] Preferably, fixing plates are vertically connected to both ends of the main support semi-circular rings, and the two groups of main support semi-circular rings cooperate to form a hoop structure and are detachably connected to the hydraulic hoist through bolts

[0006] Preferably, the hydraulic hoist includes a cylinder barrel, a lower end cover, and a piston rod hanger head connected in sequence from top to bottom

[0007] Preferably, the sealing layer includes a special-shaped sealing ring and a V-shaped combined sealing ring arranged inside the main support semi-circular rings in sequence

[0008] Preferably, the special-shaped sealing ring is arc-shaped, and the special-shaped sealing rings on the inner sides of the two groups of main support semi-circular rings cooperate to form a circle.

[0009] Preferably, the V-shaped combined sealing ring is disposed closely below the inner side of the special-shaped sealing ring.

[0010] Preferably, the top of the temporary device for handling oil leakage at the lower end cover is sealed with the bottom of the lower end cover through the special-shaped sealing ring, and the inner side of the temporary device for handling oil leakage at the lower end cover is sealed with the surface of the piston rod through the V-shaped combined seal.

[0011] Preferably, one-way oil measuring holes are formed on the surface of the main support semi-circular ring, and oil leakage through holes are arranged at positions corresponding to the one-way oil measuring holes on the sealing layer.

[0012] Preferably, a tubing and a connector are detachably connected to the one-way oil measuring hole, and the one-way oil measuring hole is communicated with an oil cup through the tubing.

[0013] Preferably, a scraping semi-circular ring with the same radian is fixedly connected along the bottom of the main support semi-circular ring, and the scraping semi-circular rings at the bottoms of the two groups of main support semi-circular rings cooperate to form a scraping ring.

[0014] Advantages of the present utility model:

[0015] The present utility model solves the problems that it is difficult to simply handle the oil leakage of the piston rod lower end cover of a large hydraulic hoist cylinder and measure the flow rate of oil leakage. The device has a simple structure and is convenient to install, which can greatly solve the dilemma that the external leakage of a large hydraulic hoist cylinder cannot be temporarily handled. At the same time, it can improve the efficiency of defect handling, provide a basis for quantitatively analyzing the amount of oil leakage, and is an important guarantee for equipment maintenance, stability and operation. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the temporary device for handling oil leakage at the lower end cover of the present utility model;

[0018] Figure 3 It is a bottom view of the temporary device for handling oil leakage at the lower end cover of the present utility model;

[0019] Figure 4 It is a schematic diagram of the oil cup of the present utility model;

[0020] 1. Temporary device for handling oil leakage at the lower end cover; 2. Piston rod; 3. Lower end cover; 4. Cylinder barrel; 5. Suspension head; 1-1. Main support semi-circular ring; 1-2. One-way oil measuring hole; 1-3. Scraping ring; 1-4. Special-shaped sealing ring; 1-5. V-shaped combined sealing ring; 1-6. Oil cup. Detailed Embodiments

[0021] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] As Figure 1 shown, a temporary device for treating oil leakage at the lower end cover of a hydraulic hoist includes a temporary device 1 for treating oil leakage at the lower end cover. The top of the temporary device 1 for treating oil leakage at the lower end cover is sealed with the bottom of the lower end cover 3 of the hydraulic hoist, and the bottom of the temporary device 1 for treating oil leakage at the lower end cover is sealed with the piston rod 2 of the hydraulic hoist. The temporary device for treating oil leakage at the lower end cover includes two groups of symmetrically arranged main support semi-rings 1-1. The two groups of main support semi-rings 1-1 are detachably connected to the outer periphery of the lower end cover 3 and the piston rod 2 of the hydraulic hoist. A sealing layer is arranged inside the main support semi-ring 1-1. In this embodiment: The hydraulic hoist is a prior art. During use, the two groups of symmetrically arranged main support semi-rings 1-1 are cooperated with each other and fixed on the hydraulic hoist through detachable connection methods such as riveting and clamping to form a sealed housing. However, only the sealed housing is still not sufficient to be completely sealed. Therefore, a sealing layer is closely arranged on the inner side of the sealed housing. The sealing layer is composed of multiple layers of sealing rings. The installation method of the sealing rings is a prior art, including but not limited to using sealant bonding to form a complete seal to prevent oil leakage of the hydraulic hoist.

[0023] Preferably, fixing plates are vertically connected to both ends of the main support semi-ring 1-1. The two groups of main support semi-rings 1-1 cooperate to form a hoop structure and are detachably connected to the hydraulic hoist through bolts. During use, in this embodiment, vertical fixing plates are arranged at both ends of the support semi-ring 1-1 to make the main support semi-ring 1-1 form a hoop structure, and the two groups of main support semi-rings 1-1 are detachably connected through bolts.

[0024] Preferably, the hydraulic hoist includes a cylinder barrel 4, a lower end cover 3, a piston rod 2, and a lifting head 5 connected in sequence from top to bottom. In this embodiment, it is the specific structure of the hydraulic hoist. In reality, the oil leakage of the hydraulic hoist is at the connection between the lower end cover 3 and the piston rod 2. During use, due to the long-term operation of the piston rod 2 at the limit position, the seal in direct contact with the piston rod 2 at the lower end cover 3 is deformed. At this time, this application is used for sealing to prevent oil leakage.

[0025] Preferably, the sealing layer includes a special-shaped sealing ring 1-4 and a V-shaped combined sealing ring 1-5 arranged in sequence on the inner side of the main support semi-ring 1-1. During use, in this embodiment, a first layer of seal is formed by the special-shaped sealing ring 1-4 arranged on the inner side of the main support semi-ring 11, which can prevent oil from leaking out from the side. At the same time, a layer of V-shaped combined sealing ring 1-5 is arranged on the inner side of the first-layer special-shaped sealing ring 1-4. The installation method of the V-shaped combined sealing ring 1-5 belongs to the conventional technical means in the art. Through the cooperation of the two layers of sealing rings, the oil leakage of the hydraulic hoist is further prevented.

[0026] Preferably, the shaped sealing ring 1-4 is arc-shaped. The shaped sealing rings 1-4 on the inner sides of the two groups of main support semi-circular rings 1-1 cooperate to form a circle, and the formed circular seal is arranged around the inner sides of the two groups of main support semi-circular rings 1-1.

[0027] Preferably, the V-shaped combined sealing ring 1-5 is tightly arranged below the inner side of the shaped sealing ring 1-4. During use, first arrange the lower seal tightly below the inner side of the shaped sealing ring 1-4, and then add several layers of upper seals according to the actual situation.

[0028] Preferably, the top of the temporary device 1 for handling oil leakage of the lower end cover is sealed with the bottom of the lower end cover 3 through the shaped sealing ring 1-4, and the inner side of the temporary device 1 for handling oil leakage of the lower end cover is sealed with the surface of the piston rod 2 through the V-shaped combined seal 1-5. In this embodiment, the top of the temporary device 1 for handling oil leakage of the lower end cover is sealed with the bottom of the lower end cover 3 through the shaped sealing ring 1-4 and the top of the main support semi-circular ring 1-1 in the sealing layer, and at the same time, the inner side of the V-shaped combined seal 1-5 is sealed with the surface of the piston rod 2.

[0029] Preferably, one-way oil measuring holes 1-2 are formed on the surface of the main support semi-circular ring 1-1, and oil leakage through holes are arranged at corresponding positions on the sealing layer. In this embodiment, in order to measure the oil leakage amount of the lower end cover 3 within a certain period of time, by arranging the one-way oil measuring holes 1-2 on the main support semi-circular ring 1-1 and matching with the corresponding through holes on the sealing layer, the oil can flow out through the one-way oil measuring holes 1-2 for collection.

[0030] Preferably, a fuel pipe and a connector are detachably connected to the one-way oil measuring hole 1-2, and the one-way oil measuring hole 1-2 is communicated with an oil cup 1-6 through the fuel pipe. During use, the oil in the oil cylinder flows into the oil cup 1-6 through the one-way oil measuring hole 1-3 and the fuel pipe. When the oil cup 1-6 is full, remove the fuel pipe and seal it through the connector.

[0031] Preferably, a scraping semi-circular ring with the same radian is fixedly connected to the bottom of the main support semi-circular ring 1-1. The scraping semi-circular rings at the bottoms of the two groups of main support semi-circular rings 1-1 cooperate to form a scraping ring 1-3. In this embodiment, the scraping ring 1-3 is split into two scraping semi-circular rings and respectively arranged at the bottom of the main support semi-circular ring 1-1. During use, it cooperates with the main support semi-circular ring 1-1 to form an integral scraping ring 1-3. The scraping ring 1-3 is a prior art. During use, when the piston rod 2 contracts, the outer surface of the piston rod 2 contacts the scraping ring 1-3 at the bottom of the temporary device 1 for handling oil leakage of the lower end cover, and the sludge is scraped off.

[0032] The operation steps of this embodiment are as follows: When the seal that was originally in direct contact with the piston rod 2 at the lower end cover 1-3 deforms and ages, use the temporary device 1 for handling oil leakage at the lower end cover. Specifically, first bond the special-shaped sealing ring 1-4 to the inner side of the main support semi-ring 1-1, then install the V-shaped combined sealing ring 1-5, and finally symmetrically install the two groups of main support semi-rings 1-1. Seal the tops of the two groups of main support semi-rings 1-1 and the top of the special-shaped sealing ring 1-4 at the bottom of the lower end cover 1-3, seal the V-shaped combined sealing ring 1-5 inside the two groups of main support semi-rings 1-1 with the outer surface of the piston rod 2, and finally fix it by means of a hoop. Then connect an oil cup 1-6 through a oil pipe at the position of the one-way oil measurement hole 1-3. Among them, the special-shaped sealing ring 1-4 prevents oil from leaking out from the side, and the V-shaped combined sealing ring 1-5 prevents oil from leaking out from the bottom.

[0033] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations to the present invention. The embodiments and the features in the embodiments in this application can be arbitrarily combined with each other without conflict. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A temporary device for handling oil leakage at the lower end cover of a hydraulic hoist, including the temporary device (1) for handling oil leakage at the lower end cover, characterized in that, The top of the temporary device (1) for handling oil leakage from the lower end cover is sealed with the bottom of the lower end cover (3) of the hydraulic hoist. The bottom of the temporary device (1) for handling oil leakage from the lower end cover is sealed with the piston rod (2) of the hydraulic hoist. The temporary device (1) for handling oil leakage from the lower end cover includes two sets of symmetrically arranged main support semi-rings (1-1), and the two sets of main support semi-rings (1-1) are detachably connected to the outer peripheries of the lower end cover (3) and the piston rod (2) of the hydraulic hoist. A sealing layer is arranged inside the main support semi-ring (1-1).

2. The temporary device for dealing with the oil leakage at the lower end cover of a hydraulic hoist according to claim 1, wherein, Fixing plates are vertically connected to both ends of the main support semi-ring (1-1). The two sets of main support semi-rings (1-1) cooperate to form a hoop structure and are detachably connected to the hydraulic hoist by bolts.

3. The temporary device for dealing with oil leakage at the lower end cover of a hydraulic hoist according to claim 1, characterized in that, The hydraulic hoist includes a cylinder barrel (4), a lower end cover (3), a piston rod (2), and a lifting head (5) connected in sequence from top to bottom.

4. A temporary device for handling oil leakage from the lower end cover of a hydraulic hoist according to claim 1, wherein the sealing layer includes a special-shaped sealing ring (1-4) and a V-shaped combined sealing ring (1-5) arranged in sequence on the inner side of the main support semi-ring (1-1).

5. The temporary device for dealing with oil leakage at the lower end cover of a hydraulic hoist according to claim 4, characterized in that, The special-shaped sealing ring (1-4) is arc-shaped, and the special-shaped sealing rings (1-4) on the inner sides of the two sets of main support semi-rings (1-1) cooperate to form a circle.

6. The temporary device for dealing with oil leakage at the lower end cover of a hydraulic hoist according to claim 5, characterized in that, The V-shaped combined sealing ring (1-5) is tightly arranged below the inner side of the special-shaped sealing ring (1-4).

7. A temporary device for handling oil leakage from the lower end cover of a hydraulic hoist according to claim 6, wherein the top of the temporary device (1) for handling oil leakage from the lower end cover is sealed with the bottom of the lower end cover (3) through the special-shaped sealing ring (1-4), and the bottom of the temporary device (1) for handling oil leakage from the lower end cover is sealed with the surface of the piston rod (2) through the V-shaped combined sealing ring (1-5).

8. A temporary device for handling oil leakage from the lower end cover of a hydraulic hoist according to claim 1, wherein a one-way oil measuring hole (1-2) is formed on the surface of the main support semi-ring (1-1), and an oil leakage through hole is arranged at a position corresponding to the one-way oil measuring hole (1-2) on the sealing layer.

9. The temporary device for treating oil leakage at the lower end cover of a hydraulic hoist according to claim 8, characterized in that, A tubing and a connector are detachably connected to the one-way oil measuring hole (1-2), and the one-way oil measuring hole (1-2) is communicated with an oil cup (1-6) through the tubing.

10. The temporary device for dealing with oil leakage at the lower end cover of a hydraulic hoist according to claim 1, characterized in that, A scraping semi-ring with the same radian is fixedly connected to the main support semi-ring (1-1) along the bottom, and the scraping semi-rings at the bottoms of the two sets of main support semi-rings (1-1) cooperate to form a scraping ring (1-3).

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