A linkage cylinder detection mechanism capable of pressure relief and oil accumulation

Abstract

The utility model discloses a kind of linkage cylinder detection mechanism of pressure relief oil storage in the technical field of hydraulic cylinder detection, including the oil drain and oil storage groove being set in the lateral wall of hydraulic cylinder body, can be set in the lateral wall of hydraulic cylinder body oil drain, through the drive chamber of the lower part of piston to pressure relief through oil drain, avoid internal pressure to continue to gather, and through oil storage groove can temporarily store the excess oil agent during operation, avoid the excess oil agent in drive chamber gasification and form pressure boost, and piston during operation, oil agent in oil storage groove will also be adhered, make excess oil agent also backflow and lubricate, convenient to use, effectively avoid pressure increase and cause oil agent to be extruded downwards, effectively avoid test drive device to be contaminated by oil agent, still increase the magnetic suction blowout tank outside hydraulic cylinder body, through the blowout tank to the oil agent of a small amount of sputtering and block, avoid oil agent to sputter outward.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder testing technology, and in particular to a linkage cylinder testing mechanism that can release pressure and store oil. Background Technology

[0002] Hydraulic cylinders are used in many environments, but whether they can withstand fatigue, high temperatures, and whether the internal hydraulic cylinder lubricating oil has sufficient lubricity, including the adhesion performance of different types of lubricating oil to the hydraulic cylinder wall, all need to be tested.

[0003] Currently, there are no professional organizations to conduct this type of testing, nor are there any relevant certifications, which prevents manufacturers from obtaining the necessary test data.

[0004] Therefore, users can only conduct tests according to their own usage environment requirements, especially fatigue testing. This testing device requires opening the hydraulic cylinder head and continuously running and measuring in the working environment. Moreover, it is not in the production process, but operated separately. A push rod is installed at the bottom of the hydraulic cylinder, and the push rod is used to push the piston in the drive chamber to reciprocate, while continuously observing and recording the working environment inside the hydraulic cylinder.

[0005] This type of hydraulic cylinder requires lubricating oil inside. Under normal conditions, the oil is sealed as a whole, preventing leakage. However, in the test hydraulic cylinder, there is a gap between the piston and the cylinder drive rod. During reciprocating motion, the piston and cylinder scrape the lubricating oil, causing it to vaporize and increasing the internal pressure. Because the piston and cylinder are sealed, when the piston moves downward, the lubricating oil below is forced into the test drive rod by the pressure of the drive chamber. This leads to oil leakage. Furthermore, the high pressure within the drive chamber causes oil to spray downwards, adversely affecting the drive mechanism below. Therefore, this situation needs to be improved.

[0006] Based on this, the present invention designs a linkage cylinder detection mechanism that can release pressure and store oil, in order to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide a linkage cylinder testing mechanism that can release pressure and store oil. It can release pressure in the drive chamber of the lower part of the piston by opening an oil drain port on the side wall of the hydraulic cylinder body, thus preventing the continuous accumulation of internal pressure. In addition, the oil storage tank can temporarily store excess oil during operation, preventing excess oil from vaporizing and increasing pressure in the drive chamber. Moreover, when the piston is running, the oil in the oil storage tank will also adhere to it, allowing excess oil to flow back for lubrication. It is convenient to use and effectively prevents the oil from being squeezed downward due to increased pressure, thus effectively preventing the test drive device from being contaminated by oil.

[0008] This utility model is implemented as follows: a linkage cylinder detection mechanism capable of depressurization and oil storage, comprising: Hydraulic cylinder body, drain port, oil reservoir and blowout preventer; The hydraulic cylinder body is a cavity with openings at both ends. Two drive chambers are opened inside the hydraulic cylinder body, and a piston is slidably installed inside each drive chamber. The oil drain port is recessed downwards and is located at the top opening of the drive cavity. The oil drain port is recessed downwards and is located in the drive cavity. The oil drain port forms a downward notch at the top of the side wall of the drive cavity. The inner wall of the drive chamber is also vertically recessed and formed with an oil storage groove. The oil storage groove is vertically connected to the bottom of the oil outlet, and the top of the oil storage groove is connected to the oil outlet. The inner cavity of the drive chamber is connected to the outside through the oil storage groove and the oil outlet. The blowout preventer is a long, U-shaped groove with an opening on its vertical side, and the opening of the blowout preventer faces inward and fits against the side wall of the hydraulic cylinder. An inner baffle is also vertically installed on the inner side of the blowout preventer, and the blowout preventer and the inner baffle form a liquid storage tank. The top of the inner baffle and the top of the blowout preventer form an opening on the vertical surface. Furthermore, port baffles are provided at both ends of the liquid storage tank, and the two ends of the liquid storage tank are closed by the port baffles; Multiple magnetic blocks are also provided on the inner side of the inner baffle, and the blowout preventer is attracted to the side wall of the hydraulic cylinder by the magnetic blocks; The oil drain port of the hydraulic cylinder is directly opposite the inner opening of the blowout preventer, and the oil drain port is located within the opening range between the blowout preventer and the inner baffle.

[0009] Furthermore, it also includes a bracket plate, which is a flat plate for supporting the equipment, and the bottom of the hydraulic cylinder is locked to the top of the bracket plate by bolts.

[0010] Furthermore, the oil storage tank is an arc-shaped groove, and the numerical center line of the oil storage tank coincides with the center line of the oil outlet.

[0011] Furthermore, the opening height h between the inner baffle and the blowout preventer is greater than the top opening s of the oil drain port, and the difference is not less than 1 cm. The inner baffle and the blowout preventer are fixed as an integral structure. The top of the inner baffle is an inclined surface that is higher on the inside and lower on the outside.

[0012] Furthermore, each of the drive chambers has two oil drain ports, which are symmetrically located on the left and right sides of the drive chamber; a blowout preventer is provided on the outer side of each of the oil drain ports on the left and right sides, and the oil drain ports of the front and rear drive chambers are all within the coverage of the blowout preventer. The two adjacent drive cavities are closed off.

[0013] The beneficial effects of this utility model are: 1. This utility model adds an oil drain port, which connects the top of the inner and outer sides of the drive chamber, so that when the piston runs to the top, the pressure in the sealed chamber can be released, avoiding the continuous accumulation of pressure in the drive chamber and avoiding the influence of additional pressure on the test driving force. 2. An oil storage tank is added below the oil outlet of this device. The oil storage tank can temporarily store the oil that is squeezed out due to pressure. The stored oil will flow back to continuously lubricate the drive chamber and piston, effectively reducing abnormal situations caused by excessive oil loss during testing. 3. This device also includes a blowout preventer, which prevents the oil from being sprayed out due to excessive pressure. It also effectively prevents the oil from spraying out of the test device and can store and block the oil, thus playing a protective role. Moreover, it is magnetic, making it easy to clean. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a top view of the overall structure of this utility model; Figure 2 This is a schematic cross-sectional view of the internal structure of a single drive cavity of this utility model; Figure 3 This is a schematic diagram of the hydraulic cylinder body of this utility model in a cut-out state; Figure 4 This is a schematic diagram of the anti-spray groove structure on the left and right sides of the front of the hydraulic cylinder body of this utility model; Figure 5 This is a schematic diagram of the overall structure of the anti-spray groove of this utility model; Figure 6 This is an enlarged schematic diagram of the top inclined surface of the inner baffle of this utility model.

[0016] The attached diagram lists the components represented by each number as follows: 1-Hydraulic cylinder body, 11-Drive chamber, 12-Piston, 13-Bracket plate, 2-Oil drain port, 21-Oil storage tank, 3-Blowout preventer, 31-Inner baffle, 32-Port baffle, 33-Liquid storage tank, 34-Magnetic block. Detailed Implementation

[0017] Please see Figures 1 to 6 As shown, this utility model provides a linkage cylinder detection mechanism that can release pressure and store oil. In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] In a specific embodiment of the technical solution of this utility model: Includes hydraulic cylinder body 1, oil drain port 2, oil reservoir 21 and blowout preventer 3; The hydraulic cylinder body 1 is a cavity with openings at both ends. Two drive chambers 11 are opened inside the hydraulic cylinder body 1, and a piston 12 is slidably installed inside each drive chamber 11. The bracket plate 13 is a flat plate that supports the equipment. The bottom of the hydraulic cylinder body 1 is locked to the top of the bracket plate 13 by bolts. The bracket plate 13 is a support used to isolate and support the test drive device and the test hydraulic cylinder body 1 at the bottom.

[0019] The oil drain port 2 is recessed downward at the top opening of the drive cavity 11. The oil drain port 2 is recessed downward in the drive cavity 11, and the oil drain port 2 forms a downward notch at the top of the side wall of the drive cavity 11. The inner wall of the drive cavity 11 is also recessed vertically with an oil storage groove 21. The oil storage groove 21 is an arc-shaped groove. The numerical center line of the oil storage groove 21 coincides with the center line of the oil outlet 2. The arc-shaped oil storage groove 21 can play the role of oil storage and is also easy to process. Only a notch needs to be milled. It causes little damage to the inner wall of the cylinder and has little impact on the test data. In addition, this device mainly tests the changes in fatigue, working environment and oil adhesion. Therefore, the small notch of the oil storage groove 21 has a negligible impact on the test device.

[0020] The oil storage tank 21 is vertically connected to the bottom of the oil outlet 2, and the top of the oil storage tank 21 is connected to the oil outlet 2. The inner cavity of the drive chamber 11 is connected to the outside through the oil storage tank 21 and the oil outlet 2. Two oil drain ports 2 are provided inside each drive chamber 11. The two oil drain ports 2 are symmetrically located on the left and right sides of the drive chamber 11. An anti-blowout groove 3 is provided on the outside of the oil drain ports 2 on the left and right sides. The oil drain ports 2 of the front and rear drive chambers 11 are within the coverage of the anti-blowout groove 3. The two adjacent drive chambers 11 are closed, that is, no oil drain port 2 is opened at the partition between the two drive chambers 11 to avoid mutual spraying and interference of oil. If oil drain ports 2 are also set at the front and rear ends, although it will not affect the use, the additional anti-spray groove 3 will be not conducive to the installation of the equipment in the front and rear direction of the bracket plate 13 of this device. Therefore, it is only necessary to open oil drain ports 2 on the left and right sides.

[0021] The blowout preventer 3 is a long strip-shaped U-shaped groove with an opening on its vertical side, and the opening of the blowout preventer 3 faces inward and fits against the side wall of the hydraulic cylinder body 1. An inner baffle 31 is also vertically installed on the inner side of the blowout preventer 3. The blowout preventer 3 and the inner baffle 31 form a liquid storage tank 33. The top of the inner baffle 31 and the top of the blowout preventer 3 form an opening on the vertical surface. The opening height h between the inner baffle 31 and the blowout preventer 3 is greater than the top opening height s of the oil drain 2, and the difference is not less than 1cm. In other words, the top horizontal cover of the blowout preventer 3 needs to be above the opening of the oil drain 2 to block it, and the bottom of the notch of the oil drain 2 should be above the inner baffle 31 to ensure that all the oil sprayed or overflowed from the oil drain 2 is collected by the blowout preventer 3 and does not spray to the surroundings. Meanwhile, the top opening height s of the oil drain port 2 is less than the thickness of the piston 12, while the height of the oil reservoir 12 is greater than the thickness of the piston 12. This ensures that the oil drain port 2 is not directly connected to the drive chamber 11, but is buffered through the oil reservoir 12, reducing the probability of oil spraying out.

[0022] The inner baffle 31 and the blowout preventer 3 are fixed as an integral structure; The top of the inner baffle 31 is an inclined surface with a higher inner side and a lower outer side, which facilitates the downward flow of oil into the blowout preventer 3. Because magnetic attachment is convenient, this structure can be removed for cleaning, and reinstalled by simply aligning it with the magnetic attachment. When the oil pressure is high, it is generally sprayed outwards, while when the pressure is low, it will not spray but will be stored in the oil storage tank 21. It is rare for oil to spray outwards due to high pressure. Even if it does spray out, the inner baffle 31 of this device is tightly attached to the inner wall of the hydraulic cylinder 1, and there will be virtually no leakage. If there is leakage, it will be very small and will adhere to the outer wall of the hydraulic cylinder 1, without splashing everywhere. Thus, the purpose of this device has been achieved. If necessary, it can also be glued with adhesive to ensure that the oil does not overflow downwards to the outside. This device does not prevent a small amount of oil from overflowing, which is a normal phenomenon. This device only prevents the oil from splashing outwards due to excessive pressure.

[0023] Furthermore, both ends of the liquid storage tank 33 are provided with port baffles 32, and both ends of the liquid storage tank 33 are closed by the port baffles 32. Multiple magnetic blocks 34 are also provided on the inner side of the inner baffle 31, and the blowout preventer 3 is attracted to the side wall of the hydraulic cylinder 1 by the magnetic blocks 34. The oil drain port 2 of the hydraulic cylinder body 1 is directly opposite the inner opening of the blowout preventer 3, and the oil drain port 2 is located within the opening range between the blowout preventer 3 and the inner baffle 31.

[0024] It should be noted that: The internal pressure of the drive chamber 11 below the piston of the hydraulic cylinder 1 tested is mainly due to the oil being pushed at high speed to form gas, and the oil also vaporizes, creating a pressurization effect in the drive chamber 11, which leads to pressure imbalance. This is the reason why the lubricating oil is squeezed downward. Therefore, it is necessary to release the pressure generated during the test operation, and the vaporized oil and the added oil also need to be discharged together.

[0025] 1. This device uses the blowout preventer 3 to collect the oil sprayed out due to increased pressure, which helps to prevent pollution of the surrounding environment and also prevents personnel from being sprayed with oil when recording data. 2. Under normal circumstances, hydraulic cylinders only work once in a long time, sometimes even once every few hours. However, the testing device requires the hydraulic cylinders to run continuously to achieve the purpose of fatigue testing and testing under various complex working conditions. Because of the excessively frequent operation, the lubricant in the drive chamber 11 will be lost and vaporized too quickly, which requires frequent shutdowns to apply lubricating oil to the drive chamber 11 on the inner wall of the hydraulic cylinder body 1. This device can store the excess oil through the oil storage tank 21, and replenish it when the oil is insufficient. However, it is not allowed to add the oil storage tank 21 to the cylinder wall of the drive chamber 11, as this would change the cylinder structure, increase cylinder resistance and smoothness, and affect the test accuracy. Therefore, this device only has an opening at the top of the hydraulic cylinder body 1, which does not affect the test accuracy. The oil in the oil storage tank 21 will also be spread on the wall of the drive chamber 11 by the reciprocating movement of the piston 12. 3. The oil drain port 2 can also play a role in relieving pressure, so as to avoid inaccurate testing due to excessive pressure in the drive chamber 11. Therefore, this device can effectively relieve pressure and ensure the accuracy of the force data of the test piston 12.

[0026] During testing, the lower drive device pushes the piston 12 up and down, causing the oil in the drive chamber 11 to vaporize due to high-speed reciprocating motion, resulting in increased pressure inside the chamber. When the piston 12 moves upward to the oil storage tank 21, the increased pressure buffers the oil and pressure below the piston 12. The piston 12 does not come out of the oil outlet 2, so the drive chamber 11 is not directly connected to the oil outlet 2. The oil is only sprayed into the oil storage tank 21 at the moment of connection. The oil outlet 2 is used to buffer the air intake of the oil storage tank 21, so that the device achieves an overall buffering effect.

[0027] Even if more oil is sprayed out, it will spray out along the gap in the drain port 2. The oil will be blocked by the blowout preventer 3, and due to the pressure, a small amount of oil that overflows will flow into the blowout preventer 3 along the top slope of the inner baffle 31.

[0028] Cleaning the blowout preventer 3 is as simple as removing it for rinsing.

[0029] The forward and backward direction indicated by this device refers to the direction of the line connecting the two drive cavities 11, that is... Figure 1 The color refers to the front-to-back direction, while the left-to-right direction refers to the direction in which the oil drain port 2 is located. Figure 1The left and right directions indicated are based on the directions or positional relationships shown in the accompanying drawings. They are only for the purpose of facilitating the description of this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A linkage cylinder detection mechanism capable of pressure relief and oil storage, characterized in that, include: Hydraulic cylinder body (1), oil drain port (2), oil reservoir (21) and blowout preventer (3); The hydraulic cylinder body (1) is a cavity with openings at both ends. Two drive chambers (11) are opened inside the hydraulic cylinder body (1), and a piston (12) is slidably installed inside each drive chamber (11). The oil drain port (2) is recessed downward at the top opening of the drive cavity (11). The oil drain port (2) is recessed downward in the drive cavity (11). The oil drain port (2) forms a downward notch at the top of the side wall of the drive cavity (11). The inner wall of the drive cavity (11) is also vertically recessed and formed by an oil storage groove (21). The oil storage groove (21) is vertically connected to the bottom of the oil outlet (2). The top of the oil storage groove (21) is connected to the oil outlet (2). The inner cavity of the drive cavity (11) is connected to the outside through the oil storage groove (21) and the oil outlet (2). The blowout preventer (3) is a long strip-shaped U-shaped groove. The vertical side of the blowout preventer (3) is open, and the opening of the blowout preventer (3) faces inward and fits against the side wall of the hydraulic cylinder body (1). An inner baffle (31) is also vertically arranged on the inner side of the blowout preventer (3). The blowout preventer (3) and the inner baffle (31) form a liquid storage tank (33). The top of the inner baffle (31) and the top of the blowout preventer (3) form an opening on the vertical surface. Furthermore, both ends of the liquid storage tank (33) are provided with port baffles (32), and both ends of the liquid storage tank (33) are closed by the port baffles (32); Multiple magnetic blocks (34) are also provided on the inner side of the inner baffle (31), and the anti-spray groove (3) is attracted to the side wall of the hydraulic cylinder (1) by the magnetic blocks (34); The oil drain port (2) of the hydraulic cylinder body (1) is directly opposite the inner opening of the blowout preventer (3), and the oil drain port (2) is located within the opening range between the blowout preventer (3) and the inner baffle (31).

2. The linkage cylinder detection mechanism capable of depressurization and oil storage according to claim 1, characterized in that: It also includes a bracket plate (13), which is a flat plate for the equipment to support, and the bottom of the hydraulic cylinder (1) is bolted to the top of the bracket plate (13).

3. The linkage cylinder detection mechanism capable of depressurization and oil storage according to claim 1, characterized in that: The oil storage tank (21) is an arc-shaped groove, and the numerical center line of the oil storage tank (21) coincides with the center line of the oil outlet (2).

4. The linkage cylinder detection mechanism capable of depressurization and oil storage according to claim 1, characterized in that: The opening height h between the inner baffle (31) and the blowout preventer (3) is greater than the top opening s of the oil drain (2), and the difference is not less than 1 cm. The inner baffle (31) and the blowout preventer (3) are fixed as an integral structure; The top of the inner baffle (31) is an inclined surface that is higher on the inside and lower on the outside.

5. The linkage cylinder detection mechanism capable of depressurization and oil storage according to claim 1, characterized in that: Two oil drain ports (2) are provided inside each of the drive chambers (11), and the two oil drain ports (2) are symmetrically provided on the left and right sides of the drive chambers (11); a blowout preventer (3) is provided on the outside of the oil drain ports (2) on the left and right sides, and the oil drain ports (2) of the front and rear drive chambers (11) are within the coverage of the blowout preventer (3). The two adjacent drive cavities (11) are closed off.

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