A hydraulic system for metal material performance testing

Abstract

The application discloses a hydraulic system for metal material performance test and relates to the technical field of hydraulic systems, which comprises a mounting shell and a liquid storage cylinder fixedly mounted in the mounting shell, wherein a guide plate in the shape of a circular truncated cone shell and a barrier plate in the shape of an inverted circular truncated cone shell are sequentially arranged from bottom to top in the liquid storage cylinder, and the guide plate is fixedly mounted at the bottom of the barrier plate. The mounting pipe drives the push plate to move, the push plate drives the oil below the guide plate to rotate, the impurities and moisture in the oil move in the direction away from the liquid suction pipe under the action of centrifugal force, the air bubbles in the oil are collected by the push plate, the oil taken by the liquid suction pipe is relatively clean, the impurities and moisture are prevented from affecting the stable operation of the hydraulic system, the vortex formed by the push plate stirring the oil is prevented from spreading upward by the barrier plate in the shape of an inverted circular truncated cone shell, the liquid level of the oil above is kept calm, the contact area of the oil and air is reduced, and the amount of air dissolved in the oil is reduced.

Description

Technical Field

[0001] This invention relates to the field of hydraulic system technology, specifically to a hydraulic system for testing the properties of metallic materials. Background Technology

[0002] As is well known, the hydraulic system is an important component of a metal material performance testing device. It supplies power to the testing device through hydraulic oil so that the testing device can apply sufficient pressure to the metal material under test, thereby detecting the performance of the metal material.

[0003] For example, the invention patent with application publication number CN103244475B, application publication date December 9, 2015, entitled "A Hydraulic Oil Tank with Hydraulic Component Storage Tank", includes a box-shaped body and an oil tank cover disposed on the body. The body is provided with an oil suction port and an oil return port. The body includes a first storage tank and a second storage tank that are separated from each other. The oil tank cover is disposed at the opening end of the first storage tank.

[0004] The shortcomings of existing technology are that hydraulic oil is an important component of hydraulic systems, mainly used to transmit pressure. However, the production, transportation and storage of hydraulic oil are carried out under normal pressure, and air is inevitably mixed into the hydraulic oil. Moreover, the pressure and temperature of hydraulic oil will increase during operation, which will reduce the solubility of gas. Gas in hydraulic oil will be released and form bubbles, and the bubbles in hydraulic oil will affect the stability of the hydraulic system. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic system for testing the properties of metallic materials, thereby overcoming the aforementioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic system for testing the performance of metallic materials, comprising a mounting shell and a liquid storage cylinder fixedly installed therein, wherein the liquid storage cylinder is provided with a frustum-shaped guide plate and an inverted frustum-shaped baffle plate arranged sequentially from bottom to top, the guide plate being fixedly installed at the bottom of the baffle plate, an mounting cylinder being rotatably mounted on the guide plate, a liquid extraction pipe on the liquid storage cylinder extending through the mounting cylinder to below the guide plate, and a push plate for collecting air bubbles being provided at the bottom of the mounting cylinder.

[0007] As a further description of the above technical solution: the push plate has a notch in the middle, and the notch is provided with receiving grooves that are arranged in a linear array and angled upward.

[0008] As a further description of the above technical solution: a plurality of connecting grooves are provided between two adjacent receiving grooves, and the connecting grooves are only connected to the receiving groove located above.

[0009] As a further description of the above technical solution: the push plate is provided with an air guide channel communicating with multiple receiving slots, and the lower side wall of the barrier plate is provided with an annular air collection slot for receiving the air guide channel.

[0010] As a further description of the above technical solution: the air guide channel has multiple downward-sloping drain ports on the side wall opposite to the receiving groove.

[0011] As a further description of the above technical solution: the push plate remains tilted throughout the rotation process.

[0012] As a further description of the above technical solution: it also includes a dust collection box movably installed on the bottom side wall of the liquid storage tank, the dust collection box being connected to the liquid storage tank to filter the oil.

[0013] As a further description of the above technical solution: the liquid storage cylinder is symmetrically hinged with a first sealing plate and a second sealing plate for sealing both ends of the dust collection box.

[0014] As a further description of the above technical solution: the dust collection box is symmetrically and movably provided with movable cylinders for pushing against the first sealing plate and the second sealing plate.

[0015] As a further description of the above technical solution: a filter screen is provided in the movable cylinder corresponding to the second sealing plate.

[0016] In the above technical solution, the hydraulic system for testing the properties of metallic materials provided by the present invention has the following beneficial effects: During operation, the motor drives the oil pump, which draws oil through the suction pipe and pressurizes the oil. The pressurized oil is then sent to the hydraulic system through the discharge pipe. The hydraulic system drives the metallic material performance testing device. After operation, the hydraulic oil flows back to the reservoir through the return pipe and dissipates heat above the baffle plate, fully releasing any air. Simultaneously, the oil flows downwards, flowing along the frustum-shaped guide plate to a position near the side of the reservoir, and then towards the suction pipe. This process... In the process, the mounting tube rotates under the action of the motor, chain, and sprocket, which drives the push plate to move. The push plate pushes the oil under the guide plate to rotate. Impurities and water in the oil (water has a higher density than hydraulic oil) move away from the suction pipe under the action of centrifugal force. Air bubbles in the oil are collected by the push plate, so that the oil drawn by the suction pipe is relatively clean, avoiding impurities and water from affecting the stable operation of the hydraulic system. The inverted frustum-shaped baffle plate prevents the vortex formed by the push plate stirring the oil from spreading upward, keeping the surface of the oil above calm, thereby reducing the contact area between the oil and air and reducing the amount of air dissolved in the oil. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the structure of the liquid storage cylinder provided in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the dust collection box provided in an embodiment of the present invention;

[0021] Figure 4 A cross-sectional structural diagram of the liquid storage cylinder provided in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the barrier plate provided in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the first sealing plate provided in an embodiment of the present invention;

[0024] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0025] Figure 8 This is a schematic diagram of the internal structure of the dust collection box provided in an embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of the structure of the lock block provided in an embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the push plate provided in an embodiment of the present invention;

[0028] Figure 11 This is a schematic diagram of the internal structure of the pusher plate provided in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Mounting shell; 11. Liquid storage cylinder; 111. Baffle plate; 112. Guide plate; 113. Gas collection groove; 114. Exhaust duct; 115. Mounting plate; 116. Liquid extraction pipe; 117. Liquid outlet pipe; 118. Return pipe; 12. Mounting cylinder; 121. Push plate; 122. Receiving groove; 123. Connecting groove; 124. Air guide duct; 125. Liquid outlet; 126. Sprocket; 13. Dust collection box; 131. Movable cylinder; 132. First lever block; 133. Locking block; 134. First cable; 135. First sealing plate; 136. Second sealing plate; 137. Second cable; 138. Second lever block. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Please see Figure 1-11 This invention provides a technical solution: a hydraulic system for testing the performance of metal materials, including a mounting shell 1 and a liquid storage cylinder 11 fixedly installed therein. The liquid storage cylinder 11 is provided with a frustum-shaped guide plate 112 and an inverted frustum-shaped barrier plate 111 arranged sequentially from bottom to top. The guide plate 112 is fixedly installed at the bottom of the barrier plate 111. A mounting cylinder 12 is rotatably installed on the guide plate 112. A liquid extraction pipe 116 on the liquid storage cylinder 11 passes through the mounting cylinder 12 and extends to the bottom of the guide plate 112. A push plate 121 for collecting air bubbles is provided at the bottom of the mounting cylinder 12.

[0033] Specifically, a mounting plate 115 is fixedly installed on the liquid storage cylinder 11. The mounting plate 115 extends to the outside of the liquid storage cylinder 11 and is fixedly installed with an oil pump and a motor for driving the oil pump. The end of the mounting cylinder 12 extends to the upper side of the mounting plate 115 and is fixedly installed with a hollow sprocket 126. A chain is provided between the output end of the motor and the sprocket 126. The end of the liquid extraction pipe 116 is connected to the liquid inlet of the oil pump. A liquid outlet pipe 117 is fixedly installed on the mounting shell 1. The bottom end of the liquid outlet pipe 117 is connected to the liquid outlet of the oil pump. A return pipe 118 is fixedly installed on the mounting shell 1, which is connected to the liquid storage cylinder 11 and whose bottom end is located above the baffle plate 111.

[0034] Furthermore, during operation, the motor drives the oil pump, which draws and pressurizes oil through the suction pipe 116. The pressurized oil is then sent to the hydraulic system through the discharge pipe 117. The hydraulic system drives the metal material performance testing device. After operation, the hydraulic oil flows back to the reservoir 11 through the return pipe 118 and dissipates heat above the baffle plate 111, fully releasing any air trapped inside. Simultaneously, the oil flows downwards, along the frustum-shaped guide plate 112 to a position near the side of the reservoir 11, and then approaches the suction pipe 116. During this process, the mounting pipe rotates under the action of the motor, chain, and sprocket 126. The installation pipe drives the push plate 121 to move, and the push plate 121 pushes the oil under the guide plate 112 to rotate. Impurities and water in the oil (water has a higher density than hydraulic oil) move away from the suction pipe 116 under the action of centrifugal force. The air bubbles in the oil are collected by the push plate 121, so that the oil drawn by the suction pipe 116 is relatively clean, avoiding impurities and water from affecting the stable operation of the hydraulic system. The inverted frustum-shaped baffle plate 111 will prevent the vortex formed by the push plate 121 stirring the oil from spreading upward, keeping the surface of the oil above calm, thereby reducing the contact area between the oil and the air and reducing the amount of air dissolved in the oil.

[0035] In another embodiment of the present invention, a notch is provided in the middle of the push plate 121, and a receiving groove 122 arranged in a linear array and pointing upwards is provided in the notch.

[0036] Specifically, during the movement of the push plate 121, the oil can pass through the gap between the receiving grooves 122, and the air bubbles in the oil will adhere to the receiving grooves 122 under the action of surface tension and the receiving grooves 122, and then accumulate in the receiving grooves 122, so that the push plate 121 can collect the air bubbles in the oil during the movement.

[0037] In another embodiment of the present invention, a plurality of connecting grooves 123 are provided between two adjacent receiving grooves 122, and the connecting grooves 123 are only connected to the receiving grooves 122 located above.

[0038] Specifically, the connecting groove 123 can divide the large gap between the receiving grooves 122 into multiple small gaps, which can greatly increase the probability of bubbles contacting the receiving grooves 122 and the connecting grooves 123. Furthermore, bubbles that come into contact with the connecting grooves 123 will also adhere to the connecting grooves 123 and enter the receiving grooves 122 along the connecting grooves 123.

[0039] In another embodiment of the present invention, the push plate 121 is provided with an air guide channel 124 communicating with multiple receiving grooves 122, and the lower side wall of the baffle plate 111 is provided with an annular gas collecting groove 113 for receiving the air guide channel 124. Multiple downwardly oriented drain ports 125 are provided on the side wall of the air guide channel 124 opposite to the receiving grooves 122.

[0040] Specifically, the distance between the receiving groove 122 and the side wall of the liquid storage cylinder 11 increases from top to bottom, the distance between the connecting groove 123 and the side wall of the liquid storage cylinder 11 increases from top to bottom, the side wall of the liquid storage cylinder 11 is provided with a gas collecting groove 113 and an exhaust channel 114 above the oil, the top of the gas guide channel 124 is always located in the annular gas collecting groove 113 during the movement of the push plate 121, and the distance between the drain port 125 and the side wall of the liquid storage cylinder 11 decreases from top to bottom.

[0041] Furthermore, during the movement of the pusher plate 121, air bubbles adhere to the receiving groove 122 and the connecting groove 123, and some oil is also present in these grooves. Under centrifugal force, the oil in the connecting groove 123 moves obliquely upwards, pushing the air bubbles into the receiving groove 122. Similarly, under centrifugal force, the oil in the receiving groove 122 moves obliquely upwards, further pushing the air bubbles into the air guide channel 124. The receiving groove 122 and the connecting groove 123 guide the air bubbles within the oil... The oil moves under the pressure of the liquid, preventing the bubbles from moving towards the suction pipe 116 due to the pressure difference of the rotating oil. The oil and bubbles entering the air guide channel 124 will separate under the action of gravity. The bubbles move upward under the influence of the oil pressure and then enter the gas collection tank 113 through the air guide channel 124 and are discharged from the exhaust channel 114. The oil in the air guide channel 124 continues to move away from the suction pipe 116 under the action of centrifugal force, and then is discharged to the outside of the air guide channel 124 along the downward-sloping drain port 125. The downward-sloping drain port 125 can also prevent the bubbles from being discharged with the oil.

[0042] Furthermore, in the above embodiment, the oil level in the storage cylinder 11 is flush with the bottom of the gas collecting tank 113.

[0043] In another embodiment of the present invention, the push plate 121 remains tilted throughout the rotation process.

[0044] Specifically, the push plate 121 is inclined to the radial plane of the liquid storage cylinder 11 and is inclined to the rear in the direction of movement of the push plate 121.

[0045] Furthermore, during the movement of the pusher plate 121, the inclined pusher plate 121 can push the oil to move obliquely backward, thereby causing the oil, impurities and water to move towards the side wall of the storage tank 11, and can ensure the movement direction of the oil and air bubbles in the receiving tank 122 and the connecting tank 123, thereby ensuring that the air bubbles in the oil can be discharged smoothly.

[0046] In another embodiment of the present invention, a dust collection box 13 is movably installed on the bottom side wall of the liquid storage cylinder 11, and the dust collection box 13 is connected to the liquid storage cylinder 11 to filter the oil.

[0047] Specifically, during operation, the pusher plate 121 continuously agitates the oil, forming a vortex. The denser impurities and water are thrown to the bottom of the inner wall of the storage tank 11 and enter the dust collection box 13 under the push of the oil. The dust collection box 13 filters and collects the impurities and water in the oil, ensuring the purity of the oil in the storage tank 11.

[0048] In another embodiment of the present invention, a first sealing plate 135 and a second sealing plate 136 for sealing both ends of the dust collection box 13 are symmetrically hinged on the liquid storage cylinder 11.

[0049] Specifically, torsion springs are provided between the first sealing plate 135 and the liquid storage cylinder 11, and between the second sealing plate 136 and the liquid storage cylinder 11, and a groove is provided in the middle of the internal channel of the dust collection box 13.

[0050] Furthermore, when the dust collection box 13 is coupled to the liquid storage cylinder 11, both the first sealing plate 135 and the second sealing plate 136 rotate (to... Figure 7 According to the diagram, the circles on the first sealing plate 135 and the second sealing plate 136 are its pivots, and the rotation angle is 15°. The first sealing plate 135 is inserted into the rotating oil, and the oil carrying impurities and moisture enters the dust collection box 13 along the first sealing plate 135. The movement speed of the oil decreases, and the impurities and moisture with higher density in the oil are deposited in the groove in the middle of the internal channel of the dust collection box 13 under the action of gravity. The second sealing plate 136 moves the oil, and the oil flows obliquely along the second sealing plate 136, forming a negative pressure behind the second sealing plate 136, which in turn attracts the oil in the dust collection box 13 to flow out.

[0051] In another embodiment of the present invention, the dust collection box 13 is symmetrically and movably provided with a movable cylinder 131 for pushing against the first sealing plate 135 and the second sealing plate 136.

[0052] Specifically, a first lever 132 and a second lever 138 are symmetrically arranged on the outer wall of the dust collection box 13. A first pull cable 134 is provided between the first lever 132 and the two movable cylinders 131, and an electric telescopic rod is provided between the first lever 132 and the dust collection box 13. A spring is provided between the movable cylinders 131 and the dust collection box 13. Locking blocks 133 are symmetrically arranged on the dust collection box 13. A locking groove adapted to the locking block 133 is opened in the liquid storage cylinder 11. A spring is provided between the locking block 133 and the dust collection box 13. A second pull cable 137 is provided between the second lever 138 and the two locking blocks 133. A drain channel is provided at the bottom of the groove in the dust collection box 13, which is connected to the drain channel on the mounting shell 1.

[0053] Furthermore, during installation, manually move the first lever 132 and the second lever 138. The first lever 132 moves the movable cylinder 131 via the first cable 134, causing the movable cylinder 131 to retract into the dust collection box 13. The spring between the movable cylinder 131 and the dust collection box 13 is compressed. The second lever 138 moves the locking block 133 back into the dust collection box 13 via the second cable 137. The spring between the locking block 133 and the dust collection box 13 is compressed. At this point, the dust collection box 13 can be installed into the liquid storage cylinder 11. Then, release the second lever 138 and the first lever 132 in sequence. The locking block 133, under the action of the spring, inserts into the locking groove, fixing the dust collection box 13 in the liquid storage cylinder 11. The movable cylinder 131, under the action of the spring, pushes the first sealing plate 135 and the second sealing plate 136 to rotate. The first sealing plate 135 and the second sealing plate 136 rotate inward toward the liquid storage cylinder 11, and the dust collection box 13 is connected to the liquid storage cylinder 11. When cleaning is required after working for a period of time, the electric telescopic rod is controlled to drive the first lever 132 to move. The first lever 132 drives the movable cylinder 131 to move through the first pull cable 134, so that the movable cylinder 131 retracts into the dust collection box 13. At this time, the drain channel in the mounting shell 1 is opened, and the impurities, water and oil in the dust collection box 13 are discharged together. Then the drain channel is closed, the electric telescopic rod drives the first lever 132 to move in the opposite direction, and the dust collection box 13 continues to work.

[0054] In another embodiment of the present invention, a filter screen is provided in the movable cylinder 131 corresponding to the second sealing plate 136.

[0055] Specifically, the filter screen can further block unsettled impurities in the oil, preventing them from returning to the oil in the reservoir 11.

[0056] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hydraulic system for metal material property testing, characterized by, The device comprises a mounting shell and a liquid storage cylinder fixedly mounted in the shell, wherein a guide plate in the shape of a circular truncated cone and a barrier plate in the shape of an inverted circular truncated cone are arranged in the liquid storage cylinder from bottom to top, the guide plate is fixedly mounted at the bottom of the barrier plate, a mounting cylinder is rotatably arranged on the guide plate, a liquid suction pipe on the liquid storage cylinder extends through the mounting cylinder to below the guide plate, and a push plate for collecting air bubbles is arranged at the bottom of the mounting cylinder; A gap is formed in the middle of the push plate, and a plurality of upwardly inclined receiving grooves in linear array are arranged in the gap; An air guide channel is arranged on the push plate and communicates with the plurality of receiving grooves, an annular air collecting groove is formed in the lower side wall of the barrier plate and receives the air guide channel, and an air exhaust channel is formed in the side wall of the liquid storage cylinder and communicates with the air collecting groove and the space above the oil.

2. The hydraulic system for testing the properties of a metal material according to claim 1, wherein A plurality of connecting grooves are arranged between adjacent two receiving grooves, and the connecting grooves only communicate with the receiving grooves above.

3. The hydraulic system for testing the properties of a metal material according to claim 2, wherein A plurality of downwardly inclined liquid discharge ports are formed in the side wall on the side of the air guide channel relative to the receiving grooves.

4. The hydraulic system for testing the properties of a metal material according to claim 1, wherein The push plate always remains inclined during rotation.

5. The hydraulic system for testing the properties of a metal material according to claim 1, wherein A dust collecting box is movably mounted on the side wall at the bottom of the liquid storage cylinder, and the dust collecting box communicates with the liquid storage cylinder to filter the oil.

6. The hydraulic system for testing the properties of a metal material according to claim 5, wherein First and second sealing plates are symmetrically hinged on the liquid storage cylinder to seal the two ends of the dust collecting box.

7. The hydraulic system for testing the properties of a metal material according to claim 6, wherein A movable cylinder is symmetrically movably arranged in the dust collecting box and used to push against the first and second sealing plates.

8. The hydraulic system for testing the properties of a metal material according to claim 7, wherein A filter screen is arranged in the movable cylinder corresponding to the second sealing plate.

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