Oil return assembly and horizontal vibration test bench

Abstract

The application provides an oil return assembly and a horizontal vibration test bench. The oil return assembly comprises a fixed plate, at least two oil outlet holes arranged on the fixed plate, and a flow adjusting device. The flow adjusting device comprises a mounting seat fixed between the two oil outlet holes, a swing rod mounted on the mounting seat, and a floating ball arranged at two ends of the swing rod. The top end of the oil outlet hole is provided with a spherical groove matched with the floating ball. The swing rod is rotatably arranged relative to the mounting seat to control the relative position of the floating ball and the spherical groove. The horizontal vibration test bench and the oil return assembly can automatically adjust the opening size of the two oil outlet holes at different distances, adjust the oil return flow of different oil outlet holes, balance the oil return flow of the two different oil return pipes, and improve the stability of the system.

Description

Oil return assembly and horizontal vibration test bench Technical Field

[0001] This invention relates to an oil return assembly and a horizontal vibration test bench. Background Technology

[0002] When the existing horizontal vibration test bench is working, the horizontal slide needs to be connected to a high-pressure oil source system. The high-pressure oil source system supplies a high-pressure hydraulic oil to the inside of the T-type bearing to lubricate and generate an oil film layer, so that the slider can slide smoothly in the groove.

[0003] The T-bearing has an open structure. A continuous supply of hydraulic oil from a high-pressure oil source eventually accumulates inside the oil baffle frame of the horizontal slide. For larger horizontal slides, four or six return oil holes are typically evenly distributed on the fixed plate, connected via oil pipes to the manifold valve at the front end of the return oil pump. The oil is then pumped back to the high-pressure oil source system through the return oil pump assembly, forming a circulation.

[0004] Below the fixed plate, there are two return oil pipes, one in front and one behind, connected to the manifold valve. The oil pipe closer to the manifold valve is shorter, while the oil pipe further away is longer. The longer the oil pipe, the greater the pressure loss during hydraulic oil flow. When the return oil pump is working, the hydraulic oil flow velocity in the shorter oil pipe is greater than that in the longer oil pipe. The oil accumulated in the shorter oil pipe will be sucked out first, while some oil will remain in the longer oil pipe. After the oil in the shorter oil pipe is sucked out, the return oil pump will draw in air from inside the horizontal slide, causing the flow velocity in the longer oil pipe to decrease further, creating a vicious cycle. Over time, this will cause instability in the high-pressure oil source system, and may even lead to machine shutdown.

[0005] In view of this, it is necessary to improve the existing test bench in order to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide an oil return assembly to solve the problem of instability in the high-pressure oil source system caused by different oil pipe lengths in existing test benches.

[0007] To achieve the above objectives, the present invention provides an oil return assembly, which includes a fixed plate, at least two oil outlet holes formed on the fixed plate, and a flow regulating device. The flow regulating device includes a mounting base fixed between the two oil outlet holes, a rocker arm mounted on the mounting base, and floats disposed at both ends of the rocker arm. The top of each oil outlet hole has a spherical groove for engaging with the float. The rocker arm is rotatably disposed relative to the mounting base to control the relative position of the float and the spherical groove.

[0008] As a further improvement of the present invention, the diameter of the spherical groove is equal to the diameter of the float.

[0009] As a further improvement of the present invention, a rotating shaft is fixedly provided on the mounting base, and the swing arm is rotatably connected to the rotating shaft.

[0010] As a further improvement of the present invention, the mounting base is provided with a height adjustment screw to adjust the distance between the mounting base and the fixing plate.

[0011] As a further improvement of the present invention, the two ends of the swing arm are provided with support forks and pins fixedly connected to the support forks, and the float is disposed in the support forks and pivotally connected to the pins.

[0012] As a further improvement of the present invention, the number of flow regulating devices is multiple, with one flow regulating device corresponding to every two oil outlet holes.

[0013] As a further improvement of the present invention, the oil return assembly further includes an oil return pump and an oil return pipe connecting the oil return pump and at least two of the oil outlet holes.

[0014] As a further improvement of the present invention, the distances of the return oil pump from the different oil outlet holes are not equal.

[0015] The present invention also provides a horizontal vibration test bench, which includes the oil return assembly as described above and a plurality of T-shaped bearings fixedly mounted on the fixed plate.

[0016] As a further improvement of the present invention, the horizontal vibration test bench also includes an oil baffle plate arranged around the fixed plate, and a plurality of the T-shaped bearings are arranged inside the oil baffle plate.

[0017] The beneficial effects of the present invention are as follows: The horizontal vibration test bench and oil return assembly of the present invention, by setting a swing arm to drive the floats at both ends to move up and down, can automatically adjust the opening size of the two oil outlets at different distances, adjust the oil return flow of the different oil outlets, so that the oil return flow of the two different oil return pipes at different distances can be balanced, thereby improving the stability of the system. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the horizontal vibration test bench of the present invention;

[0019] Figure 2 is a schematic diagram of the horizontal vibration test bench of the present invention excluding the support plate;

[0020] Figure 3 is a top view of the horizontal vibration test bench of the present invention;

[0021] Figure 4 is a cross-sectional structural diagram of the oil return assembly of the present invention excluding the oil return pump and the oil return pipe.

[0022] Figure 5 is a schematic diagram of the flow regulation device of the oil return assembly of the present invention;

[0023] Figure 6 is a schematic diagram of the mounting base of the flow regulating device of the oil return assembly of the present invention;

[0024] Figure 7 is a schematic diagram of the structure of the oil return pump of the oil return assembly of the present invention. Detailed Implementation

[0025] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0028] As shown in Figures 1 to 3, the horizontal vibration test bench 100 of the present invention includes an oil return assembly 1, a plurality of T-shaped bearings, an oil baffle 2, a support plate 3 for supporting the fixed plate 11, and a high-pressure oil source for supplying oil to the T-shaped bearings.

[0029] As shown in Figures 3 to 7, the oil return assembly 1 includes a fixed plate 11, at least two oil outlet holes 12 opened on the fixed plate 11, a flow regulating device 13, an oil return pump 14, and an oil return pipe 15 connecting the oil return pump 14 and the at least two oil outlet holes 12.

[0030] The oil baffle 2 is arranged around the fixing plate 11 to prevent oil from flowing out of the fixing plate 11.

[0031] Multiple T-shaped bearings are fixedly mounted on the fixing plate 11. The T-shaped bearings serve to support the test specimen, achieving both load-bearing and guiding functions. Multiple T-shaped bearings are disposed within the oil baffle plate 2.

[0032] The high-pressure oil source is used to supply oil to the T-type bearing for lubrication and to generate an oil film layer, so that it can work normally.

[0033] The support plate 3 is used to support the fixed plate 11, and the return oil pump 14 and the return oil pipe 15 are arranged in the space formed by the support plate 3 and the fixed plate 11.

[0034] As shown in Figures 4 and 5, there are multiple flow regulating devices 13, with one flow regulating device 13 corresponding to every two oil outlet holes 12. In this embodiment, there are four oil outlet holes 12 on the fixing plate 11, and correspondingly, there are two flow regulating devices 13, which are spaced apart horizontally.

[0035] The flow regulating device 13 includes a mounting base 131 fixed between the two oil outlet holes 12, a rocker arm 132 mounted on the mounting base 131, and floats 133 disposed at both ends of the rocker arm 132. The top of each oil outlet hole 12 has a spherical groove 121 for engaging with the floats 133. The rocker arm 132 is rotatably disposed relative to the mounting base 131 to control the relative position of the floats 133 and the spherical grooves 121.

[0036] As shown in Figure 6, the mounting base 131 is fixed to the fixing plate 11 by screws 1311. The mounting base 131 is provided with height adjustment screws 1312 to adjust the distance between the mounting base 131 and the fixing plate 11, thereby adjusting the height of the swing rod 132 and the float 133.

[0037] A rotating shaft 1313 is fixedly provided on the mounting base 131, and the swing rod 132 is rotatably connected to the rotating shaft 1313. In this embodiment, the two ends of the swing rod 132 are symmetrically arranged, and the rotating shaft 1313 is located in the middle of the swing rod 132.

[0038] The rocker arm 132 has support forks 1321 at both ends and pins 1322 fixedly connected to the support forks 1321. A float 133 is disposed within the support forks 1321 and pivotally connected to the pins 1322. The float 133 can rotate relative to the rocker arm 132 to better cover the spherical groove 121, thereby controlling the exposed surface of the spherical groove 121. The float 133 is hollow, so that its density is less than that of oil, allowing it to float on the oil surface.

[0039] The diameter of the spherical groove 121 is equal to the diameter of the float 133. The mounting base 131 is disposed between the two spherical grooves 121.

[0040] As shown in Figure 7, the distances of the return oil pump 14 from different oil outlets 12 are not equal. Generally, the return oil pump 14 is located near the edge of the horizontal vibration test bench 100, which inevitably means it is closer to some of the reduced oil outlets 12 and farther from some of the oil outlets 12. The return oil pump 14 is equipped with a manifold valve 141 for connecting multiple return oil pipes 15.

[0041] When there is less oil near the oil outlet 12 of the return oil pump 14, the float 133 near the oil outlet 12 is pressed down by gravity until it closes part of the spherical groove 121 to reduce the flow rate of the corresponding oil outlet 12. Conversely, the float 133 moves away from the corresponding oil outlet 12, exposing more of the spherical groove 121, thereby increasing the flow rate of the hole.

[0042] When no oil flows into a certain oil outlet 12, under the suction of the return pump 14, the float 133 near the oil outlet 12 completely enters the spherical groove 121 and seals the oil outlet 12. Meanwhile, the float 133 at the other end rises to its highest position, maximizing the opening of the corresponding spherical groove 121. When there is also no oil at the other oil outlet 12, the return pump 14 stops working, and the floats 133 on both sides return to balance.

[0043] The horizontal vibration test bench 100 and the oil return assembly 1 of the present invention, by setting the swing arm 132 to drive the floats 133 at both ends to move up and down, can automatically adjust the opening size of the two oil outlet holes 12 at different distances, adjust the oil return flow of the different oil outlet holes 12, so that the oil return flow of the two different oil return pipes 15 at different distances can be balanced, thereby improving the stability of the system.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An oil return assembly, characterized in that: The oil return assembly includes a fixed plate, at least two oil outlet holes formed on the fixed plate, and a flow regulating device. The flow regulating device includes a mounting base fixed between the two oil outlet holes, a rocker arm mounted on the mounting base, and floats at both ends of the rocker arm. The top of each oil outlet hole has a spherical groove for engaging with the float. The rocker arm is rotatably configured relative to the mounting base to control the relative position of the float and the spherical groove. The oil return assembly also includes an oil return pump and an oil return pipe connecting the oil return pump and at least two oil outlet holes. The distances of the oil return pump from different oil outlet holes are not equal.

2. The oil return assembly according to claim 1, characterized in that: The diameter of the spherical groove is equal to the diameter of the float.

3. The oil return assembly according to claim 1, characterized in that: A rotating shaft is fixedly provided on the mounting base, and the swing arm is rotatably connected to the rotating shaft.

4. The oil return assembly according to claim 1, characterized in that: The mounting base is equipped with a height adjustment screw to adjust the distance between the mounting base and the fixing plate.

5. The oil return assembly according to claim 1, characterized in that: The swing arm is provided with support forks at both ends and pins fixedly connected to the support forks. The float is disposed in the support forks and pivotally connected to the pins.

6. The oil return assembly according to claim 1, characterized in that: There are multiple flow regulating devices, with one flow regulating device corresponding to every two oil outlet holes.

7. A horizontal vibration test bench, characterized in that: The horizontal vibration test bench includes an oil return assembly as described in any one of claims 1-6 and a plurality of T-type bearings fixedly mounted on the fixed plate.

8. The horizontal vibration test bench according to claim 7, characterized in that: The horizontal vibration test bench also includes an oil baffle plate surrounding the fixed plate, and multiple T-shaped bearings are disposed within the oil baffle plate.

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