Device capable of being used for measuring pressure and flow of hydraulic valve

Abstract

The device comprises a liquid bin, test liquid is stored on the inner side of the liquid bin, meanwhile, a pressure cylinder is arranged above the liquid bin, the top of the pressure cylinder is provided with an opening, a piston is arranged on the inner side of the pressure cylinder, a driving rod is arranged above the piston, and the driving rod is connected with the liquid bin. The top of the driving rod is connected with a force application mechanism, the force application mechanism can control the driving rod to ascend and descend and is connected with the pressure cylinder and the support, testing liquid is stored in the inner side of the pressure cylinder, and a pressure gauge and a cartridge valve are arranged on the side edge of a liquid drainage pipe at the bottom of the pressure cylinder; the liquid bin is arranged, the multiple supporting assemblies are arranged on the top of the liquid bin, the middle supporting plates of the supporting assemblies descend to be immersed into the testing liquid after supporting objects, the hydraulic valve can be placed on the supporting assemblies, then the hydraulic valve descends to be immersed into the testing liquid along with the supporting plates, and therefore the space of the hydraulic valve is rapidly filled, and the testing efficiency is improved. The time is prevented from being consumed to fill the space of the hydraulic valve when the pressure and flow test is carried out on the hydraulic valve.

Description

Technical Field

[0001] The invention relates to the technical field of valve body testing, in particular to a device that can be used for measuring pressure and flow of a hydraulic valve. Background Art

[0002] In the hydraulic system, in order to control the connection between adjacent devices and adjust the pressure, flow, direction, etc. of the liquid, hydraulic valves are needed to provide a passage for the hydraulic fluid to flow. There are many types of hydraulic valves, such as overflow valves, pressure reducing valves, throttle valves, speed regulating valves, reversing valves, etc. The above different types of valve bodies can achieve stable operation of the hydraulic system.

[0003] In order to ensure the quality of the hydraulic valve body, routine inspection of the valve body is required at the end of the valve body production in order to obtain its pressure or flow-related parameters, and then determine whether the valve body meets the standards to prevent inferior products from entering the market.

[0004] At present, there are many detection devices for valve bodies including hydraulic valves. For example, a Chinese patent with publication number CN108956108A discloses a pressure valve pressure regulating detection machine, which includes a metering pump, a shell and a filter pump. A display screen is shallowly fixed at the top of the outer surface of the shell, and an oil tank is embedded and fixed at the bottom of the inner wall of the shell. The oil tank is connected with the metering pump through an oil outlet pipe. A partition is welded in the shell, and a jacket is welded at the bottom of the partition. A filter is meshed and installed at one end of the partition away from the jacket. A door is movably installed on the outer surface of the filter, a hydraulic pump and a pressure regulating motor are welded at the top of the inner wall of the shell, a hydraulic rod is embedded and fixed at one end of the hydraulic pump, the metering pump is connected with the pressure regulating motor and the clamping rigid assembly through the oil outlet pipe, the filter pump is welded to the top of the outer surface of the oil tank, the filter pump is connected with the filter and the jacket through the oil inlet pipe, and a water tank is welded at one end of the outer surface of the shell.

[0005] When using the detection mechanism provided by the above patent, it is necessary to extract the test liquid in the oil tank through a metering pump and transport the test liquid to the hydraulic valve, and at the same time, the pressure sensor and flow sensor are used to measure the valve body hydraulic pressure and flow. Although this method can realize the detection of hydraulic valves, it has defects. For example, the hydraulic valve is separated from the test liquid, which requires the metering pump to extract the test liquid and transport it to the valve body. If the size of the valve body is small, it will quickly fill the space of the pressure valve. If the size of the valve body is large, its internal space is large, which requires some time to fill the valve body space first. After filling the valve body space, continue to increase the pressure in the valve body through the metering pump. At the same time, the pressure sensor and flow sensor complete the pressure and flow test. Under this operation mode, each valve body takes a long time, which is not conducive to the efficient completion of batch valve body detection. Summary of the invention

[0006] The object of the present invention is to provide a device that can be used for measuring the pressure and flow of a hydraulic valve, aiming to improve the problem that the testing efficiency of a valve body pressure testing device needs to be improved.

[0007] The present invention is implemented as follows: a device that can be used for measuring the pressure and flow of a hydraulic valve includes a liquid tank, a test liquid is stored inside the liquid tank, and a pressure cylinder is arranged above the liquid tank. The top of the pressure cylinder is arranged to be open, and a piston is arranged inside. A driving rod is arranged above the piston, and the top of the driving rod is connected to a force-applying mechanism. The force-applying mechanism can control the lifting and lowering of the driving rod, and the pressure cylinder and the bracket are connected at the same time. Test liquid is stored inside the pressure cylinder, and a pressure gauge and a cartridge valve are arranged on the side of the bottom discharge pipe. A supporting assembly is arranged on the inner side of the top of the liquid tank, the supporting assembly supports the valve body, and the cartridge valve is inserted into the valve body.

[0008] Preferably, a base is provided under the liquid bin, and a first solenoid valve is provided at the drainage pipe at the bottom, a branch pipe is provided in the middle of the inner side of the liquid bin, and the bottom of the branch pipe is fixedly connected to the inner bottom surface of the liquid bin, and the bracket includes a bottom rod and a branch rod, the bottom rod is provided as a T-shaped structure, and the bottom is inserted into the branch pipe, and the two branch rods are respectively provided above the bottom rod.

[0009] Preferably, two groups of force applying mechanisms are provided, and the two groups of force applying mechanisms are respectively installed on two branch rods, and two pressure cylinders are provided, and are respectively arranged on the sides of the two groups of force applying mechanisms away from each other.

[0010] Preferably, the force-applying mechanism includes a connecting plate, a pulley block and a top plate. The upper and lower ends of the connecting plate are respectively provided with clamps, the clamps are sleeved on the branch rod, the top plate is arranged above the connecting plate, and a sleeve is fixedly arranged at the end, and the sleeve is sleeved on the branch rod, and the pulley block is arranged between the top plate and the connecting plate.

[0011] Preferably, the force-applying mechanism also includes a pulling plate, a threaded column and a guide rod. The threaded column and the guide rod are arranged in parallel, and the upper and lower ends are connected to the branch rod. At the same time, the end of the threaded column is connected to the output shaft of the motor. The pulling plate is threadedly sleeved on the threaded column and connected to the free end of the pulley group. In addition, the guide rod is arranged through the pulling plate.

[0012] Preferably, an annular convex plate is provided on the pressure cylinder, and supporting arc plates are provided at the upper and lower ends of the connecting plate, and the supporting arc plates are connected by bolts and arranged below the annular convex plate; a top cover is sleeved on the driving rod, and the top cover is installed at the opening of the pressure cylinder by bolts; the end of the top plate is connected to the top of the driving rod by bolts.

[0013] Preferably, two cartridge valves are provided and connected by an elastic rope, and the cartridge valve not connected to the discharge pipe is connected to the flow meter; a liquid pump and a control box are provided on the side of the liquid bin, the liquid inlet end of the liquid pump is connected to the liquid bin, and the liquid outlet end is connected to the liquid inlet pipe of the pressure cylinder through a second solenoid valve, and the control box is electrically connected to the motor and the solenoid valve.

[0014] Preferably, multiple groups of supporting components are provided, each group of supporting components includes a pressing mechanism, a sliding plate and a supporting plate, a sleeve groove is provided on the sliding plate, two vertical plates are provided on the side of the sliding plate, the top of the vertical plates are connected by bolts and inserted into the mounting holes of the sliding plate, the supporting plate is connected to the two vertical plates and arranged on the side of the sliding plate, and an annular column is connected to the sides of the multiple sliding plates; the top of the liquid tank extends into the sleeve groove.

[0015] Preferably, the pressing mechanism includes a pressing rod and a supporting plate, a sliding slot is provided on the supporting plate, an adjusting screw is provided on the inner side of the sliding slot, a sliding card plate is fixedly provided on the end of the pressing rod, the sliding card plate extends into the sliding slot, and the adjusting screw thread passes through the sliding card plate; a buckle slot is provided on the side wall of the supporting plate adjacent to the sliding plate, a buckle plate is fixedly provided on the sliding plate, and the buckle plate passes through the buckle slot.

[0016] Preferably, a connecting frame is fixedly provided below the support plate, and the connecting frame is arranged as an H-shaped structure. A limiting rod is fixedly provided on the connecting frame, and a bidirectional screw is arranged through a bearing connection. Two lifting plates are arranged upper and lower on the connecting frame, and both ends of the limiting rod are respectively passed through the end portions of the two lifting plates, and both ends of the bidirectional screw are respectively threadedly passed through the other ends of the two lifting plates, and rollers are hingedly provided on the sides of the lifting plates; a guide rod is provided on the inner side of the liquid bin, and a connecting pipe is provided in the middle of the guide rod, and the connecting pipe sleeve is arranged on the branch pipe, and the two rollers are in contact with the guide rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention sets a liquid bin, and sets a plurality of supporting components on the top of the liquid bin, and the middle supporting plate of the supporting component is lowered and immersed in the test liquid after supporting the items, so the hydraulic valve can be placed on the supporting component, and then the hydraulic valve is immersed in the test liquid as the supporting plate descends, so that the space of the hydraulic valve is quickly filled, avoiding the time-consuming filling of the space of the hydraulic valve when performing pressure and flow tests on the hydraulic valve, and relatively improving the efficiency of batch hydraulic valve testing.

[0019] 2. The present invention arranges multiple groups of supporting components, and annular columns are connected to the outer sides of the multiple groups of supporting components. The multiple supporting components can be controlled to move synchronously by the annular columns. Therefore, when testing batch hydraulic valves, multiple hydraulic valves can be placed on multiple supporting components at the same time and immersed in the test liquid. Subsequently, by rotating the annular columns, the multiple supporting components are controlled to move and stop at the side of the staff in turn. During the stop, the staff can use the pressure cylinder and the force-applying mechanism to test the pressure and flow of the hydraulic valve. This arrangement can fill the space of each hydraulic valve before testing, thereby realizing rapid testing of batch hydraulic valves.

[0020] 3. The present invention provides a pressure cylinder, a piston is provided on the inner side of the pressure cylinder, and a driving rod is provided above the piston. Therefore, the driving rod can be controlled to move under the action of external force, thereby adjusting the position of the piston in the pressure cylinder, forcing the test liquid in the pressure cylinder to be discharged, and cooperating with the pressure gauge and the flow meter to realize the test of the pressure and flow of the pressure valve. In addition, the piston can rise when the pressure in the pressure cylinder increases, which provides convenience for adding the test liquid into the pressure cylinder.

[0021] 4. The present invention is provided with a force-applying mechanism, which can control the rotation of the threaded column under the operation of the motor, forcing the pulling plate to drive the free end of the pulley group to descend, and then controlling the top plate to descend, controlling the movement of the driving rod and the piston, and thus forcing the test liquid in the pressure cylinder to be discharged; a liquid pump is provided to control the test liquid in the liquid tank to flow to the pressure cylinder, thereby realizing the replenishment of the test liquid in the pressure cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a first overall structural schematic diagram of the present invention;

[0023] Figure 2 is a second overall structural schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the liquid bin of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the support assembly and the annular column of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the first bracket assembly of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the sliding plate of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the first support plate of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the pressing mechanism of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the guide rod, the supporting assembly and the annular column of the present invention;

[0031] Fig.10 It is a structural schematic diagram of the guide rod of the present invention;

[0032] Fig.11 is a schematic structural diagram of the second supporting assembly of the present invention;

[0033] Fig.12 It is a structural schematic diagram of the second support plate of the present invention;

[0034] Fig.13 It is a structural schematic diagram of the pressure cylinder, bracket and force-applying mechanism of the present invention;

[0035] Fig.14 It is a schematic diagram of the structure of the support of the present invention;

[0036] Fig.15 It is a schematic structural diagram of the pressure cylinder of the present invention;

[0037] Fig.16 It is a structural schematic diagram of the force applying mechanism of the present invention.

[0038] In the figure: 1, liquid tank; 11, liquid pump; 12, control box; 13, first solenoid valve; 14, base; 15, branch pipe; 2, support assembly; 21, support plate; 211, connecting frame; 212, spring; 213, two-way screw; 214, lifting plate; 215, roller; 216, limiting rod; 217, sleeve; 22, sliding plate; 221, sleeve groove; 222, buckle plate; 223, mounting hole; 23, vertical plate; 24, pressing mechanism; 241, pressing rod; 242, support plate; 243, Buckle slot; 244, adjusting screw; 245, sliding slot; 246, sliding clamp; 3, pressure cylinder; 31, pressure gauge; 32, second solenoid valve; 33, cartridge valve; 34, flow meter; 35, opening; 36, piston; 37, top cover; 38, driving rod; 4, annular column; 5, guide rod; 51, connecting pipe; 6, force-applying mechanism; 61, threaded column; 62, guide rod; 63, connecting plate; 64, top plate; 65, pulley block; 66, pulling plate; 7, bracket; 71, bottom rod; 72, branch rod. DETAILED DESCRIPTION

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0041] Example 1

[0042] In order to improve the efficiency of pressure, flow and other tests on batch valve bodies, the present embodiment provides a new valve body measuring device, through which the valve body can be controlled to move up and down on the test liquid level, so that when the valve body is immersed in the test liquid, the space of the valve body can be quickly filled. The device can be used to complete the pressure test of the valve body. Compared with the existing valve body pressure testing device, it can save the time of each valve body test, thereby improving the efficiency of batch valve body testing. The specific technical solution is shown below.

[0043] like Figure 1 , Figure 2 , Figure 3 , Fig.14As shown, the valve body measuring device includes a liquid tank 1, a pressure cylinder 3, a bracket 7 and a liquid pump 11. The top of the liquid tank 1 is set to be open, and a base 14 is set below. A discharge pipe is set at the bottom of the liquid tank 1, and a first solenoid valve 13 is set at the discharge pipe. The liquid pump 11 is set on the outside of the liquid tank 1, and the liquid inlet end is connected to the discharge pipe of the liquid tank 1 through the end. Therefore, under the action of the liquid pump 11, the test liquid in the liquid tank 1 can be forced to be output. A branch pipe 15 is set in the middle of the inner side of the liquid tank 1, and the bottom of the branch pipe 15 is fixed to the inner bottom surface of the liquid tank 1. The bracket 7 is connected to the bottom rod 71 and the top is provided with bolts. The bracket 7 includes a bottom rod 71 and a branch rod 72. The bottom rod 71 is provided with a T-shaped structure, and the lower end is inserted into the branch pipe 15. At the same time, the bolts are provided through the bottom rod 71. The two branch rods 72 are respectively provided above the bottom rod 71. The sides of the two branch rods 72 are provided with a force-applying mechanism 6. Under the action of the force-applying mechanism 6, the pressure cylinder 3 is connected with the branch rod 72. In addition, there are two pressure cylinders 3, so the two pressure cylinders 3 are respectively installed on the sides of the branch rod 72, so that the pressure cylinder 3 is stably installed relative to the liquid tank 1. The top of the pressure cylinder 3 is provided with an opening 35, and a piston 36 is provided inside. A driving rod 38 is provided above the piston 36. The top of the driving rod 38 is connected with the force-applying mechanism 6. Therefore, the driving rod 38 can be controlled to move under the operation of the force-applying mechanism 6, forcing the piston 36 to rise and fall in the pressure cylinder 3. At the same time, the test liquid is stored in the space formed by the piston 36 and the pressure cylinder 3. Therefore, the test liquid is forced to be discharged during the descent of the piston 36. A top cover 37 is sleeved on the driving rod 38 , and the top cover 37 is installed at the opening of the pressure cylinder 3 by bolts.

[0044] like Fig.15 As shown, in order to complete the pressure and flow test of the valve body, a pressure gauge 31 is provided on the discharge pipe at the bottom of the pressure cylinder 3, and a cartridge valve 33 is provided on the side of the discharge pipe. The cartridge valve 33 is connected to the channel of the pressure valve. Therefore, during the movement of the piston 36, the test liquid is output from the discharge pipe and input into the pressure valve through the cartridge valve 33. During this process, the pressure in the pressure valve can be detected in real time through the pressure gauge 31. In order to facilitate the test of the pressure of the pressure valve, a cartridge valve 33 is also provided. The two cartridge valves 33 are connected by an elastic rope. Therefore, when their relative position adjustment is satisfied, they can be placed relatively stably. The setting of the two cartridge valves 33 is convenient for inserting them into the inlet and outlet holes of the hydraulic valve respectively, and the pressure test of the hydraulic valve can be realized when the outlet of the hydraulic valve is blocked. In addition, the freely arranged cartridge valve 33 is connected to the flow meter 34, which can make the cartridge valve 33 unobstructed when testing the flow parameters of the pressure valve, and then realize the detection of liquid flow through the flow meter 34, and cooperate with the pressure gauge 31 to realize the detection of the pressure and flow of the hydraulic valve.

[0045] like Fig.16As shown, in order to stably install the pressure cylinder 3 and control the lifting and lowering of the piston 36, the force-applying mechanism 6 includes a connecting plate 63, a pulley block 65 and a top plate 64. Hoops are respectively provided at the upper and lower ends of the connecting plate 63, and supporting arc plates are provided at the upper and lower ends of the other side of the connecting plate 63. The hoop is sleeved on the branch rod 72. In addition, an annular convex plate is provided on the pressure cylinder 3, and the supporting arc plate is connected by bolts and arranged below the annular convex plate. Therefore, with the cooperation of the supporting arc plate, the annular convex plate and the hoop, the pressure cylinder 3 is stably installed on the branch rod 72. The top plate 64 is arranged above the connecting plate 63, and a sleeve is fixedly provided at the end thereof, and the sleeve is sleeved on the branch rod 72, so that the top plate 64 can be raised and lowered relative to the branch rod 72, and a plug-in groove is provided on the lower side surface of the other end of the top plate 64, and the shape of the plug-in groove is the same as that of the driving rod 38, and both are arranged as a concave-convex structure. In addition, the top of the driving rod 38 is connected by bolts and inserted into the plug-in groove, so that the driving rod 38 and the top plate 64 are relatively statically connected. The pulley block 65 is arranged between the top plate 64 and the connecting plate 63. The pulley block 65 is arranged as a labor-saving pulley block. A pulling plate 66, a threaded column 61 and a guide rod 62 are arranged on the side of the pulley block 65. The threaded column 61 and the guide rod 62 are arranged in parallel, and the upper and lower ends are connected with a plate body. At the same time, the plate body is connected to the branch rod 72. Therefore, the threaded column 61 and the guide rod 62 are connected to the branch rod 72. At the same time, the end of the threaded column 61 is connected to the output shaft of the motor. In addition, the pulling plate 66 is threadedly sleeved on the threaded column 61 and is connected to the pull plate 66. The free ends of the wheel group 65 are connected, and the guide rod 62 passes through the pulling plate 66. Therefore, with the cooperation of the guide rod 62 and the threaded column 61, the pulling plate 66 is stably and movably arranged on the side of the branch rod 72. Then, when the motor is working, the threaded column 61 rotates, forcing the pulling plate 66 to rise and fall, thereby pulling the free end of the pulley group 65 to move, forcing the top plate 64 to descend, and then controlling the driving rod 38 to drive the piston 36 to descend, increasing the pressure in the pressure cylinder 3, and forcing the test fluid to be discharged to realize the test of the hydraulic valve.

[0046] like Figure 1 , Figure 2 , Fig.15 As shown, the liquid outlet of the liquid pump 11 is connected to the liquid inlet pipe at the bottom of the pressure cylinder 3 through the second solenoid valve 32. In addition, a control box 12 is arranged outside the liquid tank 1. The control box 12 is connected to the motor, the solenoid valve, and the liquid pump 11. Therefore, the liquid pump 11 can be controlled to work under the action of the control box 12, that is, after the test of the hydraulic valve is completed, the test liquid in the liquid tank 1 is transported to the pressure cylinder 3 through the operation of the liquid pump 11, thereby forcing the piston 36 to rise, so as to realize the timely replenishment of the test liquid in the pressure cylinder 3. The control box 12 is a prior art, which is briefly introduced here. It includes a controller, a relay, a power switch, a power filter, etc., and the control box 12 can control the operation of each device.

[0047] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 8 As shown, in order to support the hydraulic valve on the liquid tank 1, multiple groups of supporting components 2 are arranged on the inner side of the top of the liquid tank 1, and each group of supporting components 2 includes a pressing mechanism 24, a sliding plate 22 and a supporting plate 21. A sleeve groove 221 is arranged on the sliding plate 22, and the top of the liquid tank 1 extends into the sleeve groove 221. Therefore, the sliding plate 22 is stably installed on the top of the liquid tank 1. In addition, under the action of external force, the sliding plate 22 can move relative to the liquid tank 1 so that the position of the supporting component 2 can be adjusted to facilitate the completion of batch hydraulic valve testing. In order to reduce the resistance of the sliding plate 22 to move relative to the liquid tank 1, a ball can be embedded on the side wall of the sleeve groove 221, and the ball contacts the liquid tank 1. The rolling of the ball reduces the resistance of the sliding plate 22 to move relative to the liquid tank 1. An annular column 4 is connected to the side of multiple sliding plates 22. The staff can control the rotation of the annular column 4, and then multiple sliding plates 22 move synchronously to realize the movement of multiple groups of supporting components 2. Two vertical plates 23 are arranged on the side of the sliding plate 22. The vertical plates 23 are located inside the liquid tank 1, and the tops of the vertical plates 23 are connected by bolts and inserted into the mounting holes 223 of the sliding plate 22. The supporting plate 21 is movably connected with the two vertical plates 23 and arranged on the side of the sliding plate 22. Therefore, after the hydraulic valve is placed on the supporting plate 21, the supporting plate 21 and the hydraulic valve are synchronously lowered and immersed in the test liquid in the liquid tank 1, so that the space can be filled before the hydraulic valve is tested. In order to stably place the hydraulic valve on the support plate 21, the pressing mechanism 24 is located above the support plate 21, and includes a pressing rod 241 and a support plate 242. A sliding slot 245 is provided on the support plate 242, and an adjusting screw 244 is provided on the inner side of the sliding slot 245. A sliding card plate 246 is fixedly provided at the end of the pressing rod 241, and the sliding card plate 246 extends into the sliding slot 245. The adjusting screw 244 thread runs through the sliding card plate 246. Therefore, by rotating the adjusting screw 244, the hydraulic valve can be controlled. To control the lifting of the pressing rod 241 and provide support for the hydraulic valve to be stably placed by pressing the pressing rod 241, a buckle groove 243 is provided on the side wall of the support plate 242 adjacent to the sliding plate 22, and a buckle plate 222 is fixedly provided on the sliding plate 22, and the buckle plate 222 penetrates the buckle groove 243. Therefore, under the cooperation of the buckle plate 222 and the buckle groove 243, the support plate 242 is stably and movably arranged relative to the sliding plate 22, thereby providing support for limiting the stable placement of hydraulic valves of different lengths on the supporting plate 21. In order to limit the position of the support plate 242 relative to the sliding plate 22, a rubber layer can be provided on the contact surface of the buckle plate 222 and the buckle groove 243 to increase the resistance to their relative movement.

[0048] like Figure 7As shown, in order to allow the support plate 21 and the hydraulic valve to be immersed in the test fluid and to facilitate the control of the support plate 21 and the hydraulic valve to rise, a sleeve 217 is provided below the support plate 21, and a spring 212 is provided below the sleeve 217. The sleeve 217 and the spring 212 are both sleeved on the vertical plate 23, and the spring 212 is in a compressed state. This arrangement facilitates the lifting and lowering of the support plate 21 under the action of external force.

[0049] Example 2

[0050] like Fig. 9 , Fig.10 , Fig.11 , Fig.12 As shown, on the basis of Example 1, in order to enable the support plate 21 and the hydraulic valve to be immersed in the test fluid and to facilitate the control of the rise of the support plate 21 and the hydraulic valve, a connecting frame 211 is fixedly provided under the support plate 21, that is, the connecting frame 211 replaces the sleeve 217 and the spring 212. The connecting frame 211 is set as an H-shaped structure. The connecting frame 211 is sleeved on the vertical plate 23 and is fixedly provided with a limiting rod 216. At the same time, a bidirectional screw 213 is connected through a bearing. Two lifting plates 214 are distributed up and down on the connecting frame 211. The two ends of the limiting rod 216 are respectively penetrated through the end of the two lifting plates 214, and the two ends of the bidirectional screw 213 are respectively threaded through the other ends of the two lifting plates 214. The side of the lifting plate 214 is hinged with a roller 215. With the cooperation of the limiting rod 216 and the bidirectional screw 213, the two lifting plates 214 are stably installed relative to the connecting frame 211. At the same time, the lifting and lowering of the lifting plate 214 can be controlled by rotating the bidirectional screw 213, and then the position of the roller 215 can be adjusted to provide support for adapting to different usage environments. A guide rod 5 is arranged on the inner side of the liquid tank 1. The guide rod 5 is arranged obliquely, and a connecting pipe 51 is arranged in the middle. The connecting pipe 51 is sleeved on the branch pipe 15. Two rollers 215 are in contact with the guide rod 5. The rollers 215 can move along the guide rod 5. During the movement, the support plate 21 rises and falls, so that the height and position of the hydraulic valve can be adjusted.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for measuring pressure and flow of a hydraulic valve, characterized in that: The invention comprises a liquid tank (1), wherein a test liquid is stored inside the liquid tank (1), and a pressure cylinder (3) is arranged above the liquid tank (1). The top of the pressure cylinder (3) is arranged as an opening (35), and a piston (36) is arranged inside. A driving rod (38) is arranged above the piston (36). The top of the driving rod (38) is connected to a force-applying mechanism (6). The force-applying mechanism (6) can control the lifting and lowering of the driving rod (38), and the pressure cylinder (3) and a bracket (7) are connected at the same time. The test liquid is stored inside the pressure cylinder (3), and a pressure gauge (31) and a cartridge valve (33) are arranged on the side of the bottom discharge pipe. A supporting assembly (2) is arranged on the inner side of the top of the liquid tank (1), and the supporting assembly (2) supports a valve body, and the cartridge valve (33) is inserted into the valve body.

2. A device for measuring pressure and flow of a hydraulic valve according to claim 1, characterized in that: A base (14) is provided below the liquid bin (1), and a first solenoid valve (13) is provided at the drainage pipe at the bottom. A branch pipe (15) is provided in the middle of the inner side of the liquid bin (1), and the bottom of the branch pipe (15) is fixedly connected to the inner bottom surface of the liquid bin (1). The bracket (7) comprises a bottom rod (71) and a branch rod (72). The bottom rod (71) is provided as a T-shaped structure, and the bottom is inserted into the branch pipe (15). The two branch rods (72) are respectively provided above the bottom rod (71).

3. A device for measuring pressure and flow of a hydraulic valve according to claim 2, characterized in that: The force applying mechanism (6) is provided in two groups, and the two groups of the force applying mechanism (6) are respectively mounted on two branch rods (72). The pressure cylinder (3) is provided in two groups, and is respectively arranged on the side away from each other of the two groups of the force applying mechanism (6).

4. A device for measuring pressure and flow of a hydraulic valve according to claim 3, characterized in that: The force applying mechanism (6) comprises a connecting plate (63), a pulley block (65) and a top plate (64); the upper and lower ends of the connecting plate (63) are respectively provided with clamps, which are sleeved on the branch rod (72); the top plate (64) is arranged above the connecting plate (63) and a sleeve tube is fixedly arranged at the end thereof, and the sleeve tube is sleeved on the branch rod (72); the pulley block (65) is arranged between the top plate (64) and the connecting plate (63).

5. A device for measuring pressure and flow of a hydraulic valve according to claim 4, characterized in that: The force-applying mechanism (6) further comprises a pulling plate (66), a threaded column (61) and a guide rod (62); the threaded column (61) and the guide rod (62) are arranged in parallel, and the upper and lower ends are connected to the branch rod (72); at the same time, the end of the threaded column (61) is connected to the output shaft of the motor; the pulling plate (66) is threadedly sleeved on the threaded column (61) and is connected to the free end of the pulley block (65); in addition, the guide rod (62) is arranged to pass through the pulling plate (66).

6. A device for measuring pressure and flow of a hydraulic valve according to claim 5, characterized in that: The pressure cylinder (3) is provided with an annular convex plate, and the upper and lower ends of the connecting plate (63) are provided with supporting arc plates, which are connected by bolts and arranged below the annular convex plate; a top cover (37) is sleeved on the driving rod (38), and the top cover (37) is installed at the opening (35) of the pressure cylinder (3) by bolts; the end of the top plate (64) is connected to the top of the driving rod (38) by bolts.

7. A device for measuring pressure and flow of a hydraulic valve according to claim 1, characterized in that: Two cartridge valves (33) are provided and connected by an elastic rope, and the cartridge valve (33) not connected to the liquid discharge pipe is connected to the flow meter (34); a liquid pump (11) and a control box (12) are provided on the side of the liquid bin (1); the liquid inlet end of the liquid pump (11) is connected to the liquid bin (1), and the liquid outlet end is connected to the liquid inlet pipe of the pressure cylinder (3) through a second electromagnetic valve (32); the control box (12) is electrically connected to the motor, the electromagnetic valve, and the liquid pump (11).

8. A device for measuring pressure and flow of a hydraulic valve according to claim 2, characterized in that: The supporting components (2) are provided in a plurality of groups, each group of the supporting components (2) comprises a pressing mechanism (24), a sliding plate (22) and a supporting plate (21); the sliding plate (22) is provided with a sleeve groove (221); two vertical plates (23) are provided on the side of the sliding plate (22); the tops of the vertical plates (23) are connected by bolts and inserted into the mounting holes (223) of the sliding plate (22); the supporting plate (21) is connected to the two vertical plates (23) and is provided on the side of the sliding plate (22); and an annular column (4) is connected to the sides of the plurality of sliding plates (22); the top of the liquid bin (1) extends into the sleeve groove (221).

9. A device for measuring pressure and flow of a hydraulic valve according to claim 8, characterized in that: The pressing mechanism (24) comprises a pressing rod (241) and a supporting plate (242), a sliding slot (245) is arranged on the supporting plate (242), an adjusting screw (244) is arranged on the inner side of the sliding slot (245), a sliding card plate (246) is fixedly arranged at the end of the pressing rod (241), the sliding card plate (246) extends into the sliding slot (245), and the adjusting screw (244) is threadedly arranged through the sliding card plate (246); a buckle slot (243) is arranged on the side wall of the supporting plate (242) adjacent to the sliding plate (22), a buckle plate (222) is fixedly arranged on the sliding plate (22), and the buckle plate (222) is arranged through the buckle slot (243).

10. A device for measuring pressure and flow of a hydraulic valve according to claim 8, characterized in that: A connecting frame (211) is fixedly arranged below the support plate (21), and the connecting frame (211) is arranged in an H-shaped structure. A limiting rod (216) is fixedly arranged on the connecting frame (211), and a bidirectional screw (213) is arranged in connection with the connecting frame (211) through a bearing. Two lifting plates (214) are arranged on the connecting frame (211) in an upper and lower distribution manner. The two ends of the limiting rod (216) are respectively arranged to penetrate the ends of the two lifting plates (214), and the two ends of the bidirectional screw (213) are respectively arranged to penetrate the other ends of the two lifting plates (214) by threading. A roller (215) is hingedly arranged on the side of the lifting plate (214); a guide rod (5) is arranged on the inner side of the liquid bin (1), and a connecting pipe (51) is arranged in the middle of the guide rod (5). The connecting pipe (51) is sleeved on the branch pipe (15), and the two rollers (215) are in contact with the guide rod (5).

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