A test tool for hydraulic hoses

Abstract

The utility model belongs to hydraulic hose test tool technical field, specifically disclose a kind of test tool for hydraulic hose, including test box, the inside of test box is provided with base, the bottom of base is rotatably connected with universal wheel, the top of base is fixedly connected with cylinder, the top of base is provided with transmission groove, the inside of transmission groove is slidably connected with first moving plate and second moving plate extending to transmission groove outside, the inside of first moving plate is provided with recess, the inside of recess is rotatably provided with gear, one end of gear is fixedly connected with rotating block, one side of second moving plate is rotatably connected with one end of rotating block, the rotating block is L-shaped, the inside of rotating block is provided with thread groove, so that device need not be each kind of pipe diameter individually configured fixture, significantly reduce purchase and maintenance cost, and reduce the unevenness of clamping force caused by artificial clamping, influence precision, improve processing efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of testing fixtures for hydraulic hoses, specifically a testing fixture for hydraulic hoses. Background Technology

[0002] Hydraulic hoses are mainly composed of a liquid-resistant inner rubber layer, a middle rubber layer, 2, 4, or 6 layers of steel wire spiral reinforcement, and an outer rubber layer. The inner rubber layer allows the conveyed medium to withstand pressure and protects the steel wire from corrosion. The outer rubber layer protects the steel wire from damage, and the steel wire layer acts as a reinforcing skeleton. These hoses are primarily used in hydraulic supports for mines and oilfields. They are also suitable for engineering construction, hoisting and transportation, metallurgical forging, mining equipment, shipbuilding, injection molding machinery, agricultural machinery, various machine tools, and the mechanization and automation hydraulic systems of various industrial sectors for conveying petroleum-based and water-based liquids with certain pressure and temperature, and for liquid transmission. The maximum working pressure can reach 60 MPa.

[0003] Upon investigation, existing hydraulic hose testing fixtures use screws to clamp the hose, which is cumbersome to operate and has limited adaptability to hoses of different diameters. Manually tightening the screws may result in uneven clamping force, affecting test accuracy. To address these issues, we propose a technological innovation based on the existing device. Utility Model Content

[0004] The purpose of this invention is to provide a testing fixture for hydraulic hoses to solve the problem of needing manual clamping fixtures in the above-mentioned background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a testing fixture for hydraulic hoses, comprising a test chamber, a base inside the test chamber, universal wheels rotatably connected to the bottom of the base, a cylinder fixedly connected to the top of the base, a transmission groove on the top of the base, a first moving plate and a second moving plate slidably connected inside the transmission groove extending to the outside of the transmission groove, a groove inside the first moving plate, a gear rotatably disposed inside the groove, a rotating block fixedly connected to one end of the gear, one side of the second moving plate rotatably connected to one end of the rotating block, the rotating block being L-shaped, a threaded groove inside the rotating block, a second bidirectional threaded rod rotatably connected inside the threaded groove, two clamping blocks threadedly connected to the surface of the second bidirectional threaded rod, the surfaces of the two clamping blocks slidably connected to the inside of the threaded groove, and the two clamping blocks being respectively disposed on two opposite threads on the surface of the second bidirectional threaded rod.

[0006] Preferably, the transmission groove is rotatably connected to a first bidirectional threaded rod, the surface of the first bidirectional threaded rod is rotatably connected to the interior of the first moving plate, and the first moving plate and the second moving plate are respectively disposed on two opposite threads on the surface of the first bidirectional threaded rod.

[0007] Preferably, a first motor is fixedly connected to one side of the base, and the output end of the first motor is fixedly connected to one end of a first bidirectional threaded rod.

[0008] Preferably, a limiting groove is formed on the surface of the base, and the interior of the limiting groove is slidably connected to the surfaces of the first moving plate and the second moving plate.

[0009] Preferably, a sliding rod is fixedly connected inside the limiting groove, and the surface of the sliding rod is slidably connected to the inside of the first moving plate and the second moving plate.

[0010] Preferably, one end of the rotating block is fixedly connected to a second motor, the output end of the second motor is fixedly connected to one side of the second bidirectional threaded rod, and one side of the clamping block has an arc-shaped cross-section.

[0011] Preferably, a rack is slidably connected inside the groove, and one side of the rack is connected to the surface of the gear by tooth meshing.

[0012] Preferably, a threaded rod is rotatably connected inside the groove, the surface of the threaded rod is threadedly connected to the inside of the rack, and a third motor is fixedly connected to one side of the first moving plate, the output end of the third motor being fixedly connected to one end of the threaded rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The hydraulic hose test fixture has a rotating block on one side of the first and second moving plates. The rotating block has a threaded groove inside, and a clamping block is slidably connected inside the threaded groove. One side of the clamping block is arc-shaped, so that the device does not need to configure a clamp for each pipe diameter, which significantly reduces procurement and maintenance costs. It also reduces the uneven clamping force caused by manual clamping, which affects the accuracy and improves processing efficiency.

[0015] 2. The hydraulic hose testing fixture has a groove inside the first moving plate. A gear is rotatably installed inside the groove, and a rack is slidably connected inside the groove. This allows the hydraulic hose to be heated evenly, preventing local temperatures from falling below the standard and causing misjudgment of the hose's overall high-temperature resistance. It also avoids uneven heating, which can lead to hardening in different areas of the hose and result in differences in the test data. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of a test fixture for hydraulic hoses according to the present invention;

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

[0018] Figure 3 This is a schematic diagram of the transmission groove of this utility model;

[0019] Figure 4 This is a schematic diagram of the rotating block of this utility model;

[0020] Figure 5 This is a schematic diagram of the groove structure of this utility model.

[0021] In the diagram: 1. Test chamber; 2. Base; 3. Casters; 4. First motor; 5. Cylinder; 6. First moving plate; 7. Transmission groove; 8. First bidirectional threaded rod; 9. Limiting groove; 10. Slide rod; 11. Second moving plate; 12. Rotating block; 13. Second bidirectional threaded rod; 14. Second motor; 15. Clamping block; 16. Groove; 17. Rack; 18. Threaded rod; 19. Third motor; 20. Gear; 21. Threaded groove. Detailed Implementation

[0022] Please see Figures 1-5This utility model provides a technical solution: a testing fixture for hydraulic hoses, including a test chamber 1. The test chamber 1 has a display for data display and an operating table on its top. Inside, there is a heating block for heating and a camera for observation. These are existing structures and will not be described in detail here. Inside the test chamber 1, there is a base 2. The bottom of the base 2 is rotatably connected to casters 3. The top of the base 2 is fixedly connected to a cylinder 5. The cylinder 5 is an existing structure and will not be described in detail here. The top of the base 2 has a transmission groove 7. Inside the transmission groove 7, a first moving plate 6 and a second moving plate 11 extending to the outside of the transmission groove 7 are slidably connected. Inside the transmission groove 7, a first bidirectional threaded rod 8 is rotatably connected. The surface of the first bidirectional threaded rod 8 is rotatably connected to the interior of the first movable plate 6. The first movable plate 6 and the second movable plate 11 are respectively disposed on two opposite threads on the surface of the first bidirectional threaded rod 8. A first motor 4 is fixedly connected to one side of the base 2. The output end of the first motor 4 is fixedly connected to one end of the first bidirectional threaded rod 8. A limiting groove 9 is formed on the surface of the base 2. The interior of the limiting groove 9 is slidably connected to the surfaces of the first movable plate 6 and the second movable plate 11. A sliding rod 10 is fixedly connected inside the limiting groove 9. The surface of the sliding rod 10 is slidably connected to the interior of the first movable plate 6 and the second movable plate 11. A groove 16 is formed inside the first movable plate 6. A gear 20 is rotatably disposed inside the groove 16. One end of the rotating block 12 is fixedly connected to a rotating block 12. The rotating block 12 is driven to rotate by the rotation of the gear 20. One side of the second moving plate 11 is rotatably connected to one end of the rotating block 12. The rotating block 12 is L-shaped and has a threaded groove 21 inside. A second bidirectional threaded rod 13 is rotatably connected inside the threaded groove 21. Two clamping blocks 15 are threadedly connected to the surface of the second bidirectional threaded rod 13. The surfaces of the two clamping blocks 15 are slidably connected to the inside of the threaded groove 21. The two clamping blocks 15 are respectively set on two opposite threads on the surface of the second bidirectional threaded rod 13. One end of the rotating block 12 is fixedly connected to a second motor 14. The output end of the second motor 14 is fixedly connected to one side of the second bidirectional threaded rod 13. One side of the holding block 15 has an arc-shaped cross-section, which allows it to fit the surface of the hydraulic hose more closely. A rubber pad is also provided on the clamping side to prevent damage to the surface of the hydraulic hose. When the operator needs to clamp the hydraulic hose and test its tensile strength, the hydraulic hose is placed in the center of the clamping block 15, and then the second motor 14 is started. The second bidirectional threaded rod 13 drives the two clamping blocks 15 to clamp the hydraulic hose. This clamp can clamp hydraulic hoses of different diameters. After clamping, the first motor 4 is started, which drives the first bidirectional threaded rod 8 to rotate. Under the restriction of the slide rod 10, the first moving plate 6 and the second moving plate 11 move relative to each other to perform a tensile strength test on the hydraulic hose.

[0023] A rack 17 is slidably connected inside the groove 16. One side of the rack 17 is connected to the surface of the gear 20 through tooth meshing. A threaded rod 18 is rotatably connected inside the groove 16. The surface of the threaded rod 18 is threadedly connected to the inside of the rack 17. A third motor 19 is fixedly connected to one side of the first moving plate 6. The output end of the third motor 19 is fixedly connected to one end of the threaded rod 18. When the operator needs to conduct a heat resistance test on the hydraulic hose, after clamping the hydraulic hose with the clamping block 15, the third motor 19 is started, which drives the threaded rod 18 to rotate. At the same time, it drives the rack 17 to move, and at the same time, it drives the gear 20 to rotate through the teeth, causing the rotating block 12 on one side to rotate, which drives the hydraulic hose to rotate, so that the surface of the hydraulic hose is heated evenly, preventing inaccurate test data caused by local heating.

[0024] Working principle: For this type of hydraulic hose testing fixture, when the operator needs to clamp the hydraulic hose and test its tensile strength, the hydraulic hose is placed in the center of the clamping block 15, and then the second motor 14 is started. The second bidirectional threaded rod 13 drives the two clamping blocks 15 to clamp the hydraulic hose. This fixture can clamp hydraulic hoses of different diameters. After clamping, the first motor 4 is started, which drives the first bidirectional threaded rod 8 to rotate. Under the restriction of the slide rod 10, the first moving plate 6 and the second moving plate 11 move relative to each other to test the tensile strength of the hydraulic hose.

[0025] When the staff needs to conduct a heat resistance test on the hydraulic hose, after clamping the hydraulic hose with the clamping block 15, the third motor 19 is started, which drives the threaded rod 18 to rotate, and at the same time drives the rack 17 to move. Simultaneously, the gear 20 is driven to rotate through the teeth, causing the rotating block 12 on one side to rotate, which in turn drives the hydraulic hose to rotate, so that the surface of the hydraulic hose is heated evenly, preventing inaccurate test data caused by local heating.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A test tool for hydraulic hoses, comprising a test box (1), characterized in that: The test chamber (1) is equipped with a base (2) inside. The bottom of the base (2) is rotatably connected to a caster wheel (3). The top of the base (2) is fixedly connected to a cylinder (5). The top of the base (2) is provided with a transmission groove (7). The transmission groove (7) is slidably connected to a first moving plate (6) and a second moving plate (11) extending to the outside of the transmission groove (7). The first moving plate (6) is provided with a groove (16). A gear (20) is rotatably arranged inside the groove (16). One end of the gear (20) is fixedly connected to a rotating block (). 12), one side of the second moving plate (11) is rotatably connected to one end of the rotating block (12). The rotating block (12) is L-shaped. A threaded groove (21) is provided inside the rotating block (12). A second bidirectional threaded rod (13) is rotatably connected inside the threaded groove (21). Two clamping blocks (15) are threadedly connected to the surface of the second bidirectional threaded rod (13). The surfaces of the two clamping blocks (15) are slidably connected to the inside of the threaded groove (21). The two clamping blocks (15) are respectively set on two opposite threads on the surface of the second bidirectional threaded rod (13).

2. A test fixture for hydraulic hoses as set forth in claim 1, characterized in that: The transmission groove (7) is rotatably connected to a first bidirectional threaded rod (8), the surface of the first bidirectional threaded rod (8) is rotatably connected to the interior of the first moving plate (6), and the first moving plate (6) and the second moving plate (11) are respectively disposed on two opposite threads on the surface of the first bidirectional threaded rod (8).

3. A test fixture for hydraulic hoses as defined in claim 1, characterized in that: A first motor (4) is fixedly connected to one side of the base (2), and the output end of the first motor (4) is fixedly connected to one end of the first bidirectional threaded rod (8).

4. The test fixture for hydraulic hoses of claim 1, wherein: The base (2) has a limiting groove (9) on its surface, and the interior of the limiting groove (9) is slidably connected to the surfaces of the first moving plate (6) and the second moving plate (11).

5. A test fixture for hydraulic hoses as defined in claim 4, characterized in that: The limiting groove (9) is fixedly connected to a slide rod (10), and the surface of the slide rod (10) is slidably connected to the interior of the first moving plate (6) and the second moving plate (11).

6. A test fixture for hydraulic hoses as defined in claim 1, characterized in that: One end of the rotating block (12) is fixedly connected to a second motor (14), the output end of the second motor (14) is fixedly connected to one side of the second bidirectional threaded rod (13), and one side of the clamping block (15) has an arc-shaped cross section.

7. The testing fixture for hydraulic hoses according to claim 1, characterized in that: A rack (17) is slidably connected inside the groove (16), and one side of the rack (17) is connected to the surface of the gear (20) by tooth meshing.

8. The testing fixture for hydraulic hoses according to claim 1, characterized in that: The groove (16) is rotatably connected to a threaded rod (18), the surface of which is threadedly connected to the inside of the rack (17), and a third motor (19) is fixedly connected to one side of the first moving plate (6), the output end of which is fixedly connected to one end of the threaded rod (18).

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