Hydraulic valve testing device

Abstract

The utility model discloses a hydraulic valve testing device, which relates to the technical field of hydraulic equipment detection and comprises a mounting base, a first supporting seat and a second supporting seat are respectively and fixedly mounted on the mounting base, a second clamping plate is fixedly mounted on the first supporting seat, and the first supporting seat and the second supporting seat are mutually symmetrical. A first polished rod is fixedly installed between the first supporting base and the second supporting base, a first clamping plate is movably installed on the first polished rod, and a connecting claw is fixedly installed on the side face of the first clamping plate. According to the utility model, the opposite surfaces of the first clamping plate and the second clamping plate are provided with a plurality of circular ring grooves with different diameters and the same axis, and a plurality of sealing rubber rings are matched, so that flange valve bodies with various sizes can be easily adapted, the whole set of testing tool does not need to be frequently replaced, and the time and labor cost caused by specification conversion is greatly saved; and meanwhile, the operation error in the tool replacement process is reduced, and the stability of the test precision is ensured.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic equipment testing technology, and in particular to a hydraulic valve testing device. Background Technology

[0002] In the manufacturing and subsequent maintenance of hydraulic valves, testing the sealing performance of flange valve bodies is a crucial step. Traditional testing devices often have several drawbacks. Firstly, they lack compatibility with flange valve bodies of different sizes; typically, a single device can only test a single valve body specification. When testing multiple sizes, frequent changes of testing fixtures are necessary, which not only consumes significant time and manpower but also increases the risk of operational errors during fixture changes affecting test accuracy. Secondly, installing and fixing the valve body to the test position is cumbersome and difficult. Due to the valve body's weight, manual handling and installation are not only labor-intensive but also difficult to ensure accurate positioning, easily causing damage during installation and affecting the reliability of test results and the valve's subsequent performance. Furthermore, some existing testing devices lack comprehensive protection and convenient operation assistance designs, hindering efficient and safe work for testing personnel. Based on these problems, this invention aims to provide a novel hydraulic valve testing device to address the shortcomings of existing technologies. Utility Model Content

[0003] This invention provides a hydraulic valve testing device, which solves the technical problems in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides a hydraulic valve testing device, including a mounting base. A first support seat and a second support seat are fixedly mounted on the mounting base. A second clamping plate is fixedly mounted on the first support seat. The first support seat and the second support seat are symmetrical to each other. A first optical rod is fixedly mounted between the first support seat and the second support seat. A first clamping plate is movably mounted on the first optical rod. A connecting claw is fixedly mounted on the side of the first clamping plate. A hydraulic telescopic rod is movably mounted on the side of the connecting claw. One end of the hydraulic telescopic rod is movably connected to the side of the mounting base. A hoisting assembly is provided on the top of the mounting base.

[0005] In some embodiments, the first clamping plate and the second clamping plate are symmetrical to each other, and each of the first clamping plate and the second clamping plate has a flow hole at its center. Each of the opposing surfaces of the first clamping plate and the second clamping plate has an annular groove, in which a sealing ring is fixedly installed. An mounting ear is fixedly installed on the side of the first clamping plate, and the mounting ear is movably sleeved on the surface of the first guide rod.

[0006] In some embodiments, the number of annular grooves is several, and the several annular grooves have different diameters but the same axis.

[0007] In some embodiments, the hoisting assembly includes a mounting frame, a traversing assembly, a hand chain hoist, and a valve body fixing assembly. The mounting frame includes a support rod and a top frame. The support rod is fixedly mounted on the top of the mounting base, and the top frame is fixedly mounted on the top of the support rod. The back of the top frame is provided with a protective plate, and the front of the top frame is provided with a sliding door.

[0008] In some embodiments, the traverse assembly includes a motor and a timing belt. The motor is fixedly mounted on the top of the top frame, and a bearing housing is fixedly mounted on the bottom of the top frame. A lead screw is rotatably mounted on the side of the bearing housing, and a second guide rod is fixedly mounted on the side of the bearing housing. The output end of the motor is connected to one end of the lead screw via the timing belt. A movable block is movably mounted on the lead screw, and a lifting lug is fixedly mounted below the movable block. The movable block is movably sleeved on the second guide rod.

[0009] In some embodiments, the upper part of the chain hoist is hung on the lifting lug, and the valve body fixing assembly is hung below the chain hoist.

[0010] In some embodiments, the valve body fixing assembly includes a suspension block, a transverse groove is provided on the side of the suspension block, a slot is provided below the transverse groove, a locking post is engaged in the slot, a ring belt is fixedly connected below the locking post, an ear plate is fixedly installed above the suspension block, and the lower hook of the hand chain hoist matches the ear plate.

[0011] Compared with related technologies, the hydraulic valve testing device provided by this utility model has the following advantages:

[0012] This utility model provides a hydraulic valve testing device. By setting multiple annular grooves of different diameters and the same axis on the opposite surfaces of the first and second clamping plates, and cooperating with multiple sealing rings, it can easily adapt to flange valve bodies of various sizes without the need to frequently change the entire set of testing fixtures. This greatly saves time and labor costs caused by specification conversion, while reducing operational errors during the fixture change process and ensuring the stability of testing accuracy.

[0013] This utility model provides a hydraulic valve testing device. A hydraulic telescopic rod drives a first clamping plate to slide on a first smooth rod, which, in conjunction with a second clamping plate, clamps the valve body. The operation is simple and efficient. Compared to traditional manual handling and installation, it not only reduces labor intensity but also precisely fixes the valve body, preventing damage caused by bumps during installation and ensuring the reliability of test results and the subsequent performance of the valve body.

[0014] This utility model provides a hydraulic valve testing device. The lateral movement component in the hoisting assembly adopts a structure that combines a motor, synchronous belt, lead screw, and second guide rod, which can accurately control the horizontal displacement of the valve body. Combined with a hand-operated hoist and a carefully designed valve body fixing assembly, valve bodies of different weights can be safely and stably hoisted to the testing position, which is convenient and quick, and further improves the efficiency of the overall testing process.

[0015] This utility model provides a hydraulic valve testing device. The mounting frame of the hoisting component is equipped with a protective plate to prevent the internal equipment from being damaged by external collisions, and to prevent operators from accidentally contacting the moving parts. The front sliding door uses an aluminum alloy frame with a transparent acrylic plate, which not only facilitates observation of the internal hoisting situation, but also ensures that the internal environment is relatively closed through sealing strips, creating a safe and visible operating space for the testing personnel, which is conducive to carrying out work efficiently and safely. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the first clamping plate structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the hoisting component structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the valve body fixing assembly of this utility model.

[0020] The following are the labeling elements in the diagram: 1. Mounting base; 2. First support seat; 3. Second support seat; 4. First smooth rod; 5. First clamping plate; 6. Hydraulic telescopic rod; 7. Connecting claw; 8. Second clamping plate; 9. Lifting assembly; 51. Mounting ear; 52. Flow hole; 53. Sealing ring; 91. Support rod; 92. Top frame; 93. Bearing seat; 94. Lead screw; 95. Second smooth rod; 96. Moving block; 97. Synchronous belt; 98. Hand chain hoist; 99. Valve body fixing assembly; 991. Suspension block; 992. Horizontal groove; 993. Slot; 994. Slot; 995. Ring belt; 996. Ear plate. Detailed Implementation

[0021] Example 1

[0022] This embodiment provides a hydraulic valve testing device, such as... Figure 1-4As shown, this utility model includes a mounting base 1, on which a first support seat 2 and a second support seat 3 are fixedly mounted respectively. A second clamping plate 8 is fixedly mounted on the first support seat 2. The first support seat 2 and the second support seat 3 are symmetrical to each other. A first guide rod 4 is fixedly mounted between the first support seat 2 and the second support seat 3. A first clamping plate 5 is movably mounted on the first guide rod 4. A connecting claw 7 is fixedly mounted on the side of the first clamping plate 5. A hydraulic telescopic rod 6 is movably mounted on the side of the connecting claw 7. One end of the hydraulic telescopic rod 6 is movably connected to the side of the mounting base 1. A hoisting assembly 9 is provided on the top of the mounting base 1.

[0023] In this embodiment, a mounting base 1 is provided, which is made of high-strength steel to ensure the stability of the overall device and to provide a certain degree of rust resistance. A first support base 2 and a second support base 3 are fixedly mounted on the mounting base 1 using bolts. Both the first and second support bases are steel structures, precision-machined to ensure symmetry. A second clamping plate 8 is fixedly mounted on the first support base 2 by welding. A first smooth rod 4 is precisely installed between the first and second support bases 2 and 3, ensuring its straightness error does not exceed 0.1mm. The first smooth rod 4 and the support base are fitted with an interference fit to prevent loosening. The first clamping plate 5 is movably fitted onto the first smooth rod 4 via mounting ears 51 on its side. A self-lubricating copper sleeve is embedded in the mounting ears 51, allowing the first clamping plate 5 to slide smoothly. Connecting claws 7 are welded to the side of the first clamping plate 5 to ensure uniform force distribution. One end of the hydraulic telescopic rod 6 is movably connected to the connecting claws 7 via a pin, and the other end is similarly movably connected to the side of the mounting base 1 via a pin. The hydraulic telescopic rod 6 uses a standard industrial hydraulic cylinder with a stroke of 200mm and a thrust of 5000N to ensure sufficient clamping force. The support rod 91 of the lifting assembly 9 is bolted to the top of the mounting base 1. The support rod 91 is made of hollow square steel pipe, which ensures strength while reducing weight.

[0024] Example 2

[0025] Based on Example 1, such as Figure 2 As shown, in this embodiment, the first clamping plate 5 and the second clamping plate 8 are symmetrical to each other. Both the first clamping plate 5 and the second clamping plate 8 have flow holes 52 at their center positions. Both the first clamping plate 5 and the second clamping plate 8 have annular grooves on their opposite surfaces. A sealing ring 53 is fixedly installed in the annular groove. An mounting ear 51 is fixedly installed on the side of the first clamping plate 5. The mounting ear 51 is movably sleeved on the surface of the first light rod 4.

[0026] In this embodiment, the first clamping plate 5 and the second clamping plate 8 are made of the same stainless steel and are machined by a CNC machining center to ensure that they are symmetrical. A flow hole 52 is drilled at the center of the first clamping plate 5 and the second clamping plate 8 for the passage of the test medium. Circular grooves are formed on the opposite surfaces of the first clamping plate 5 and the second clamping plate 8 using electrical discharge machining (EDM), and a sealing ring 53 is tightly embedded in the circular groove. The sealing ring 53 is made of high-temperature and high-pressure resistant fluororubber. Mounting ears 51 are welded to the side of the first clamping plate 5. A circular hole with a diameter 0.5 mm larger than the first guide rod 4 is machined on the mounting ears 51 to ensure flexible fitting onto the surface of the first guide rod 4. Limiting nuts are installed on both sides of the mounting ears 51 to prevent the first clamping plate 5 from coming off.

[0027] Example 3

[0028] Based on Example 2, such as Figure 2 As shown, the number of annular grooves in this embodiment is several, and the several annular grooves have different diameters but the same axis.

[0029] In this embodiment, there are several annular grooves, the spacing between adjacent annular grooves is equal, and the concentricity of the axis of each annular groove is controlled within ±0.05mm. This can be adapted to flange valve bodies of various sizes and meet the sealing test requirements of valve bodies of different specifications.

[0030] Example 4

[0031] Based on Example 1, such as Figure 3 As shown, the hoisting assembly 9 in this embodiment includes a mounting frame, a lateral movement assembly, a hand chain hoist 98, and a valve body fixing assembly 99. The mounting frame includes a support rod 91 and a top frame 92. The support rod 91 is fixedly installed on the top of the mounting base 1, and the top frame 92 is fixedly installed on the top of the support rod 91. A protective plate is provided on the back of the top frame 92, and a sliding door is provided on the front side of the top frame 92.

[0032] In this embodiment, the mounting frame of the hoisting assembly 9 is fabricated as follows: solid round steel is selected as the support rod 91, its bottom is welded to the top of the mounting base 1, and its top is welded to the top frame 92, which is made of channel steel. A steel plate is welded to the back of the top frame 92 as a protective plate, and ventilation holes are opened on the protective plate to prevent heat accumulation in the internal equipment. A sliding door is installed on the front side of the top frame 92. The sliding door uses an aluminum alloy frame with a transparent acrylic plate to facilitate observation of the internal hoisting situation.

[0033] Example 5

[0034] Based on Example 4, such as Figure 3As shown, the transverse movement assembly of this embodiment includes a motor and a synchronous belt 97. The motor is fixedly installed on the top of the top frame 92, and a bearing seat 93 is fixedly installed on the bottom of the top frame 92. A lead screw 94 is rotatably installed on the side of the bearing seat 93, and a second guide rod 95 is fixedly installed on the side of the bearing seat 93. The output end of the motor is connected to one end of the lead screw 94 via the synchronous belt 97. A movable block 96 is movably installed on the lead screw 94, and a lifting lug is fixedly installed below the movable block 96. The movable block 96 is movably sleeved on the second guide rod 95.

[0035] In this embodiment, the installation steps of the transverse component are as follows: A 1.5kW servo motor is fixedly installed on the top of the top frame 92 with bolts. The motor output shaft is connected to the drive pulley of the synchronous belt 97 via a coupling. A bearing housing 93 is welded to the bottom of the top frame 92, and a high-precision angular contact ball bearing is installed inside the bearing housing 93. Both ends of the lead screw 94 are installed in the two bearing housings 93 with interference fit. A second guide rod 95 is welded to the side of the bearing housing 93 parallel to the lead screw 94. The driven pulley of the synchronous belt 97 is installed at one end of the lead screw 94, and the tension of the synchronous belt 97 is adjusted by the tensioning pulley. The moving block 96 is fitted to the lead screw 94 through a threaded hole. At the same time, a circular hole with a diameter 0.5mm larger than the second guide rod 95 is machined on the moving block 96, so that it can be movably fitted onto the second guide rod 95. A lifting lug is welded below the moving block 96. The lifting lug is heat-treated to ensure strength.

[0036] Example 6

[0037] Based on Example 5, such as Figure 4 As shown, in this embodiment, the upper part of the hand chain hoist 98 is hung on the lifting lug, and the valve body fixing assembly 99 is hung below the hand chain hoist 98.

[0038] In this embodiment, the upper hook of the chain hoist 98 is hung on the lifting lug below the moving block 96, ensuring that the chain hoist 98 can safely lift flange valve bodies of common specifications. The valve body fixing assembly 99 is hung below the chain hoist 98. The suspension block 991 of the valve body fixing assembly 99 is made of cast steel and is annealed to eliminate internal stress. A horizontal groove 992 is made on the side of the suspension block 991 using a wire cutting process, and a slot 993 is made below the horizontal groove 992 for engaging the locking post 994. The locking post 994 is made of stainless steel with a chrome-plated surface to prevent rust.

[0039] Example 7

[0040] Based on Example 6, such as Figure 4As shown, the valve body fixing assembly 99 of this embodiment includes a suspension block 991. A horizontal groove 992 is provided on the side of the suspension block 991. A slot 993 is provided below the horizontal groove 992. A locking post 994 is locked onto the slot 993. A ring belt 995 is fixedly connected below the locking post 994. An ear plate 996 is fixedly installed on the top of the suspension block 991. The hook of the hand chain hoist 98 matches the ear plate 996.

[0041] In this embodiment, the valve body fixing assembly 99 is manufactured in the following details: A transverse groove 992 and a locking groove 993 are formed on the side of the suspension block 991. A locking post 994 is then inserted into the locking groove 993. A ring band 995 is welded below the locking post 994. The ring band 995 is made of high-strength nylon material to easily secure the valve body. An ear plate 996 is welded above the suspension block 991 to match the lower hook of the hand chain hoist 98, ensuring a secure and reliable connection and enabling stable lifting of the valve body for testing.

Claims

1. A hydraulic valve testing device, comprising a mounting base, characterized in that: A first support base and a second support base are fixedly installed on the mounting base. A second clamping plate is fixedly installed on the first support base. The first support base and the second support base are symmetrical to each other. A first optical rod is fixedly installed between the first support base and the second support base. A first clamping plate is movably installed on the first optical rod. A connecting claw is fixedly installed on the side of the first clamping plate. A hydraulic telescopic rod is movably installed on the side of the connecting claw. One end of the hydraulic telescopic rod is movably connected to the side of the mounting base. A hoisting assembly is provided on the top of the mounting base.

2. The hydraulic valve testing device according to claim 1, characterized in that, The first clamping plate and the second clamping plate are symmetrical to each other. Both the first clamping plate and the second clamping plate have flow holes at their center positions. Both the first clamping plate and the second clamping plate have annular grooves on their opposite surfaces. A sealing ring is fixedly installed in the annular groove. An mounting ear is fixedly installed on the side of the first clamping plate. The mounting ear is movably sleeved on the surface of the first guide rod.

3. The hydraulic valve testing device according to claim 2, characterized in that, The number of annular grooves is several, and the several annular grooves have different diameters but the same axis.

4. The hydraulic valve testing device according to claim 1, characterized in that, The hoisting assembly includes a mounting frame, a traversing assembly, a hand-operated hoist, and a valve body fixing assembly. The mounting frame includes a support rod and a top frame. The support rod is fixedly installed on the top of the mounting base, and the top frame is fixedly installed on the top of the support rod. A protective plate is provided on the back of the top frame, and a sliding door is provided on the front of the top frame.

5. A hydraulic valve testing device according to claim 4, characterized in that, The traverse assembly includes a motor and a synchronous belt. The motor is fixedly mounted on the top of the top frame, and a bearing seat is fixedly mounted on the bottom of the top frame. A lead screw is rotatably mounted on the side of the bearing seat, and a second guide rod is fixedly mounted on the side of the bearing seat. The output end of the motor is connected to one end of the lead screw via the synchronous belt. A movable block is movably mounted on the lead screw, and a lifting lug is fixedly mounted below the movable block. The movable block is movably sleeved on the second guide rod.

6. A hydraulic valve testing device according to claim 5, characterized in that, The hand chain hoist is hung on the lifting lug above, and the valve body fixing assembly is hung below the hand chain hoist.

7. A hydraulic valve testing device according to claim 6, characterized in that, The valve body fixing assembly includes a suspension block, a horizontal groove is provided on the side of the suspension block, a slot is provided below the horizontal groove, a locking post is engaged in the slot, a ring belt is fixedly connected below the locking post, an ear plate is fixedly installed above the suspension block, and the lower hook of the hand chain hoist matches the ear plate.

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