Hydraulic system for testing performance of metal material

Abstract

The invention discloses a hydraulic system for testing the performance of a metal material, and relates to the technical field of hydraulic systems, the hydraulic system comprises a mounting shell and a liquid storage cylinder fixedly mounted in the mounting shell, and the liquid storage cylinder is internally provided with a circular truncated cone shell-shaped guide plate and an inverted circular truncated cone shell-shaped barrier plate which are sequentially distributed from bottom to top; the guide plate is fixedly mounted at the bottom of the barrier plate. A mounting pipe drives a push plate to move, the push plate pushes oil liquid below a guide plate to rotate, impurities and water in the oil liquid move in the direction away from a liquid suction pipe under the action of centrifugal force, bubbles of the oil liquid can be collected by the push plate, and the oil liquid sucked by the liquid suction pipe is clean oil liquid; and the situation that stable work of the hydraulic system is affected by impurities and water is avoided, the inverted circular truncated cone shell-shaped blocking plate can block vortexes formed by stirring oil liquid through the push plate from spreading upwards, the liquid level of the oil liquid above is kept calm, then the contact area of the oil liquid and air is reduced, and the amount of air dissolved in the oil liquid is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic systems, in particular to a hydraulic system for testing the performance of metal materials. Background Art

[0002] As is known, the hydraulic system is one of the important components of the metal material performance testing device, which supplies energy to the testing device through hydraulic oil so that the testing device can apply sufficient pressure to the metal material to be tested, thereby detecting the performance of the metal material.

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

[0004] The deficiency of the existing technology is that hydraulic oil is one of the important components of the hydraulic system and is mainly used to transmit pressure. However, the production, transportation and storage of hydraulic oil are all carried out under normal pressure. Air is inevitably mixed in the hydraulic oil. Moreover, the pressure and temperature of the hydraulic oil will increase during operation, resulting in a decrease in gas solubility. The gas in the hydraulic oil will precipitate and form bubbles, and the bubbles in the hydraulic oil will affect the stability of the hydraulic system. Summary of the Invention

[0005] The purpose of the present invention is to provide a hydraulic system for testing the properties of metal materials to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: a hydraulic system for testing the properties of metal materials, comprising a mounting shell and a liquid storage cylinder fixedly installed therein, the liquid storage cylinder being provided with a truncated cone-shaped guide plate and an inverted truncated cone-shaped baffle plate distributed in sequence from bottom to top, the guide plate being fixedly installed on the bottom of the baffle plate, a mounting cylinder being rotatably provided on the guide plate, a liquid extraction tube on the liquid storage cylinder passing through the mounting cylinder and extending to the bottom of the guide plate, a push plate for collecting bubbles being provided at the bottom of the mounting cylinder.

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

[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 communicated with the receiving groove located above.

[0009] As a further description of the above technical solution: an air guide channel connected to the plurality of receiving grooves is provided on the push plate, and an annular air collecting groove receiving the air guide channel is provided on the lower side wall of the blocking plate.

[0010] As a further description of the above technical solution: a plurality of downwardly inclined drainage ports are provided on the side wall of the air guide channel opposite to the receiving groove.

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

[0012] As a further description of the above technical solution: it also includes a dust box movably mounted on the bottom side wall of the liquid storage cylinder, and the dust box is connected to the liquid storage cylinder to filter the oil.

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

[0014] As a further description of the above technical solution: movable cylinders for pushing the first sealing plate and the second sealing plate are symmetrically arranged in the dust collecting box.

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

[0016] In the above technical solution, the present invention provides a hydraulic system for testing the performance of metal materials, which has the following beneficial effects: when working, the motor drives the oil pump to work, the oil pump sucks oil through the liquid extraction pipe and pressurizes the oil, and the pressurized oil is sent to the hydraulic system through the liquid outlet pipe. The hydraulic system drives the metal material performance testing device to work, and the hydraulic oil after work flows back from the return pipe to the liquid storage cylinder, and dissipates heat above the baffle plate, fully releasing the air therein; at the same time, the oil above is flowing downward, and the oil will flow along the frustum shell-shaped guide plate to a position close to the side of the liquid storage cylinder, and then approach the liquid extraction pipe. This process In the process, the installation tube rotates under the action of the motor, chain and sprocket, and the installation tube drives the push plate to move, and the push plate pushes the oil under the guide plate to rotate. The impurities and water in the oil (the density of water is greater than the density of hydraulic oil) move in the direction away from the liquid extraction tube under the action of centrifugal force, and the bubbles in the oil will be collected by the push plate, so that the oil drawn by the liquid extraction tube is relatively clean oil, which prevents impurities and water from affecting the stable operation of the hydraulic system. The inverted frustum-shaped baffle plate will prevent the vortex formed by the push plate stirring the oil from spreading upward, so that the liquid surface of the upper oil remains calm, thereby reducing the contact area between the oil and the air, and reducing the amount of air dissolved in the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0019] Figure 2 A schematic structural diagram of a liquid storage cartridge provided in an embodiment of the present invention;

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

[0021] Figure 4 A schematic cross-sectional view of a liquid storage cartridge provided in an embodiment of the present invention;

[0022] Figure 5 A schematic structural diagram of a baffle provided in an embodiment of the present invention;

[0023] Figure 6 A schematic structural diagram of a 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 A schematic diagram of the internal structure of a dust collection box provided in an embodiment of the present invention;

[0026] Figure 9 A schematic structural diagram of a locking block provided in an embodiment of the present invention;

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

[0028] Figure 11 A schematic diagram of the internal structure of the push plate provided in an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Mounting shell; 11. Liquid storage cylinder; 111. Blocking plate; 112. Guide plate; 113. Air collecting tank; 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 discharge port; 126. Sprocket; 13. Dust collection box; 131. Movable cylinder; 132. First shift block; 133. Locking block; 134. First cable; 135. First closing plate; 136. Second closing plate; 137. Second cable; 138. Second shift block. DETAILED DESCRIPTION

[0031] In order 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] See also Figure 1-11 An embodiment of the present invention provides a technical solution: a hydraulic system for testing the properties of metal materials, comprising a mounting shell 1 and a liquid storage cylinder 11 fixedly installed therein, wherein the liquid storage cylinder 11 is provided with a truncated cone-shaped guide plate 112 and an inverted truncated cone-shaped baffle plate 111 distributed sequentially from bottom to top, the guide plate 112 is fixedly installed at the bottom of the baffle plate 111, the mounting cylinder 12 is rotatably provided on the guide plate 112, the liquid extraction tube 116 on the liquid storage cylinder 11 passes through the mounting cylinder 12 and extends to the bottom of the guide plate 112, and a push plate 121 for collecting bubbles is provided at the bottom of the mounting cylinder 12.

[0033] Specifically, a mounting plate 115 is fixedly mounted on the liquid storage cylinder 11, the mounting plate 115 extends to the outside of the liquid storage cylinder 11 and is fixedly mounted 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 mounted 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 suction pipe 116 is connected to the liquid inlet of the oil pump. A liquid outlet pipe 117 is fixedly mounted on the mounting shell 1, and the bottom end of the liquid outlet pipe 117 is connected to the liquid outlet of the oil pump. A reflux pipe 118 is fixedly mounted on the mounting shell 1, which is connected to the liquid storage cylinder 11 and has its bottom end located above the blocking plate 111.

[0034] Furthermore, when working, the motor drives the oil pump to work, and the oil pump draws oil through the liquid extraction pipe 116 and pressurizes the oil. The pressurized oil is sent to the hydraulic system through the liquid outlet pipe 117. The hydraulic system drives the metal material performance testing device to work, and the hydraulic oil after work flows back to the liquid storage cylinder 11 from the return pipe 118, and dissipates heat above the baffle plate 111 to fully release the air therein; at the same time, the oil above is flowing downward, and the oil will flow along the frustum-shaped guide plate 112 to a position close to the side of the liquid storage cylinder 11, and then approach the liquid extraction pipe 116. In this process, the mounting pipe rotates under the action of the motor, chain and sprocket 126. The push plate 121 moves, and the installation tube drives the push plate 121 to move. The push plate 121 pushes the oil below the guide plate 112 to rotate. Impurities and water (the density of water is greater than that of hydraulic oil) in the oil move in the direction away from the liquid extraction pipe 116 under the action of centrifugal force. The bubbles in the oil will be collected by the push plate 121, so that the oil extracted by the liquid extraction pipe 116 is relatively clean oil, 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, so that the liquid surface of the oil above remains 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 provided by the present invention, a notch is provided in the middle of the push plate 121 , and receiving grooves 122 distributed in a linear array and inclined upward are provided in the notch.

[0036] Specifically, during the movement of the push plate 121, the oil can pass through the gaps between the receiving grooves 122, and the 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 bubbles in the oil during the movement.

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

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

[0039] In another embodiment provided by the present invention, an air duct 124 connected to a plurality of receiving grooves 122 is provided on the push plate 121, an annular air collecting groove 113 receiving the air duct 124 is provided on the lower side wall of the blocking plate 111, and a plurality of downwardly inclined liquid discharge ports 125 are provided on the side wall of the air duct 124 opposite to the receiving groove 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, and the distance between the connecting groove 123 and the side wall of the liquid storage cylinder 11 increases from top to bottom. A gas exhaust duct 114 connecting the air collecting groove 113 and the oil above the liquid is opened in the side wall of the liquid storage cylinder 11. The top of the air guide duct 124 is always located in the annular air collecting groove 113 during the movement of the push plate 121, and the distance between the discharge port 125 and the side wall of the liquid storage cylinder 11 decreases from top to bottom.

[0041] Furthermore, during the movement of the push plate 121, the bubbles will adhere to the receiving groove 122 and the connecting groove 123, and part of the oil will also be in the receiving groove 122 and the connecting groove 123. The oil in the connecting groove 123 will move obliquely upward along the connecting groove 123 under the action of centrifugal force, thereby pushing the bubbles in the connecting groove 123 into the receiving groove 122. The oil in the receiving groove 122 will move obliquely upward under the action of centrifugal force, thereby pushing the bubbles in the receiving groove 122 to move obliquely upward, and then enter the air guide 124. The receiving groove 122 and the connecting groove 123 can guide the bubbles in the oil. The oil and bubbles entering the air duct 124 will separate under the action of gravity, and the bubbles will move upward under the influence of the oil pressure, and then enter the gas collecting tank 113 through the air duct 124 and be discharged from the exhaust duct 114. The oil in the air duct 124 will continue to move away from the liquid extraction tube 116 under the action of centrifugal force, and then be discharged to the outside of the air duct 124 along the oblique downward discharge port 125. The oblique downward discharge port 125 can also prevent the bubbles from being discharged together with the oil.

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

[0043] In another embodiment provided by the present invention, the push plate 121 always remains tilted during the rotation process.

[0044] Specifically, the push plate 121 is tilted relative to the radial plane of the liquid storage cylinder 11 and tilted toward the rear of the moving direction of the push plate 121 .

[0045] Furthermore, during the movement of the push plate 121, the inclined push plate 121 can push the oil to move obliquely rearward, thereby causing the oil, impurities and moisture to move toward the side wall of the liquid storage cylinder 11, and can ensure the movement direction of the oil and bubbles in the receiving groove 122 and the connecting groove 123, thereby ensuring that the bubbles in the oil can be discharged smoothly.

[0046] In another embodiment provided by the present invention, the dust collecting box 13 is further movably mounted on the bottom side wall of the liquid storage cylinder 11 . The dust collecting box 13 is communicated with the liquid storage cylinder 11 to filter the oil.

[0047] Specifically, during operation, the push plate 121 continuously stirs the oil, forming a vortex, and impurities and water with higher density are thrown to a position near the bottom of the inner wall of the liquid storage cylinder 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 to ensure the purity of the oil in the liquid storage cylinder 11.

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

[0049] Specifically, a torsion spring is 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 collecting box 13 .

[0050] Furthermore, when the dust box 13 is coupled to the liquid storage cylinder 11, the first sealing plate 135 and the second sealing plate 136 are rotated (to Figure 7 As shown in FIG1 , the circles on the first sealing plate 135 and the second sealing plate 136 are their rotation axes, and the rotation angles are both 15°. The first sealing plate 135 is inserted into the rotating oil, and this part of the oil carries impurities and moisture along the first sealing plate 135 into the dust collecting box 13, and the oil movement speed is reduced. 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 collecting box 13 under the action of gravity, and the second sealing plate 136 moves the oil, and the oil flows obliquely along the second sealing plate 136, and forms a negative pressure behind the second sealing plate 136, thereby attracting the oil in the dust collecting box 13 to flow out.

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

[0052] Specifically, a first shift block 132 and a second shift block 138 are symmetrically provided for sliding on the outer wall of the dust collection box 13, a first pull cable 134 is provided between the first shift block 132 and the two movable cylinders 131, and an electric telescopic rod is provided between the first shift block 132 and the dust collection box 13, a spring is provided between the movable cylinder 131 and the dust collection box 13, a locking block 133 is symmetrically provided on the dust collection box 13, a locking groove adapted to the locking block 133 is provided 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 shift block 138 and the two locking blocks 133, and a drainage channel is provided at the bottom of the groove in the dust collection box 13 to communicate with the drainage channel on the mounting shell 1.

[0053] Furthermore, during installation, the first shift block 132 and the second shift block 138 are manually shifted, and the first shift block 132 drives the movable cylinder 131 to move through the first cable 134, so that the movable cylinder 131 is retracted into the dust box 13, and the spring between the movable cylinder 131 and the dust box 13 is compressed. The second shift block 138 drives the locking block 133 to retract into the dust box 13 through the second cable 137, and the spring between the locking block 133 and the dust box 13 is compressed. At this time, the dust box 13 can be installed into the liquid storage cylinder 11, and then the second shift block 138 and the first shift block 132 are released in turn. The locking block 133 is inserted into the locking groove under the action of the spring, and the dust box 13 is fixed in the liquid storage cylinder 11. Under the action of the spring, the movable cylinder 131 pushes the first sealing plate 135 and the second sealing plate 136 to rotate, and the first sealing plate 135 and the second sealing plate 136 rotate toward the inside of the liquid storage cylinder 11, and the dust collection box 13 is connected to the liquid storage cylinder 11; when cleaning is needed after working for a period of time, the electric telescopic rod is controlled to drive the first shift block 132 to move, and the first shift block 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 drainage channel in the mounting shell 1 is opened, and the impurities, moisture and oil in the dust collection box 13 are discharged together, and then the drainage channel is closed, and the electric telescopic rod drives the first shift block 132 to move in the opposite direction, and the dust collection box 13 continues to work.

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

[0055] Specifically, the filter can further block unsettled impurities in the oil, preventing the impurities from returning to the oil in the liquid storage cylinder 11 .

[0056] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A hydraulic system for testing the properties of metal materials, characterized in that: The invention comprises a mounting shell (1) and a liquid storage cylinder (11) fixedly mounted therein, wherein the liquid storage cylinder (11) is provided with a truncated cone shell-shaped guide plate (112) and an inverted truncated cone shell-shaped baffle plate (111) sequentially distributed from bottom to top, the guide plate (112) is fixedly mounted on the bottom of the baffle plate (111), a mounting cylinder (12) is rotatably mounted on the guide plate (112), a liquid extraction tube (116) on the liquid storage cylinder (11) passes through the mounting cylinder (12) and extends to the bottom of the guide plate (112), and a push plate (121) for collecting bubbles is provided at the bottom of the mounting cylinder (12).

2. A hydraulic system for metal material performance testing according to claim 1, characterized in that: A notch is provided in the middle of the push plate (121), and receiving grooves (122) distributed in a linear array and inclined upward are provided in the notch.

3. A hydraulic system for metal material performance testing according to claim 2, characterized in that: 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 groove (122) located above.

4. A hydraulic system for metal material performance testing according to claim 2, characterized in that: The push plate (121) is provided with an air guide channel (124) connected to the plurality of receiving grooves (122), and the lower side wall of the blocking plate (111) is provided with an annular air collecting groove (113) receiving the air guide channel (124).

5. A hydraulic system for metal material performance testing according to claim 4, characterized in that: A plurality of downwardly slanting liquid discharge ports (125) are provided on the side wall of the air guide channel (124) on the side opposite to the receiving groove (122).

6. The hydraulic system for metal material performance testing according to claim 1, characterized in that: The push plate (121) always remains tilted during the rotation process.

7. The hydraulic system for metal material performance testing according to claim 1, characterized in that: It also includes a dust collecting box (13) movably mounted on the bottom side wall of the liquid storage cylinder (11), and the dust collecting box (13) is connected to the liquid storage cylinder (11) to filter the oil.

8. The hydraulic system for metal material performance testing according to claim 7, characterized in that: A first sealing plate (135) and a second sealing plate (136) for sealing the two ends of the dust collecting box (13) are symmetrically hinged on the liquid storage cylinder (11).

9. A hydraulic system for metal material performance testing according to claim 8, characterized in that: A movable cylinder (131) for pushing against the first sealing plate (135) and the second sealing plate (136) is symmetrically arranged in the dust collecting box (13).

10. A hydraulic system for metal material performance testing according to claim 9, characterized in that: A filter is provided in the movable cylinder (131) corresponding to the second sealing plate (136).

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