Breaking hammer machine core striking experiment table

Abstract

The invention relates to a breaking hammer machine core striking experiment table, and relates to the field of breaking hammer detection devices.The breaking hammer machine core striking experiment table comprises a bottom plate, a frame body and a clamping assembly, the clamping assembly comprises a top clamping piece and a plurality of side wall clamping pieces evenly distributed in the circumferential direction of the top clamping piece, and a first noise reduction piece is fixedly arranged on the lower end face of the top clamping piece; the end, away from the first noise reduction piece, of the top clamping piece is provided with a vertical driving piece used for driving the top clamping piece to move, the vertical driving piece is slidably connected with the frame body in the vertical direction, a first positioning piece used for fixing the vertical driving piece is inserted into the frame body, and the side wall clamping piece is located below the top clamping piece. The end, abutting against the breaking hammer, of the side wall clamping piece is fixedly provided with a second noise reduction piece, and the end, away from the second noise reduction piece, of the side wall clamping piece is provided with a horizontal driving piece used for driving the side wall clamping piece to horizontally move. The method has the effects of optimizing the test environment and reducing noise interference.

Description

Technical Field

[0001] This application relates to the field of hydraulic breaker testing devices, and in particular to a hydraulic breaker core impact test bench. Background Technology

[0002] In the field of engineering machinery testing equipment technology, hydraulic breakers, as a crucial component of engineering machinery, play a decisive role in the efficiency and quality of construction projects. Accurate performance testing provides reliable data for R&D personnel, helping them improve product design and enhance production quality. Developing efficient and accurate hydraulic breaker performance testing equipment can not only significantly improve the safety and stability of engineering construction but also effectively reduce production costs, injecting strong momentum into the development of the entire engineering machinery industry.

[0003] In the past, impact tests on hydraulic breakers were typically conducted using a horizontal testing method, i.e., lateral impact. Horizontal testing generally employs specialized testing equipment that simulates the impact process of a hydraulic breaker through specific mechanical structures and power systems. However, such equipment often occupies a large area, requiring significant experimental space. Furthermore, since hydraulic breakers actually impact the ground almost perpendicularly during operation, horizontal testing only yields horizontal impact data. Additionally, horizontal testing involves a series of complex mechanical operations and data acquisition procedures, but overall, it revolves around simulating horizontal impact.

[0004] The horizontal testing method used in existing technologies results in lower nitrogen and oil pressure inside the hydraulic breaker, leading to lower impact pressure. This method cannot accurately reflect the working state of the breaker under normal operating conditions, causing a significant deviation between the test results and the actual situation. It fails to accurately reflect the actual performance of the hydraulic breaker, which can mislead research and development and maintenance work. Furthermore, the piston's pressurized movement inside the breaker during testing generates significant impact and noise, affecting the working environment of testing personnel and causing noise pollution to the surrounding environment. Summary of the Invention

[0005] To optimize the testing environment and reduce noise interference, this application provides a hydraulic breaker core impact test bench.

[0006] This application provides a hydraulic breaker core impact test stand, which adopts the following technical solution: A hydraulic breaker core impact test bench includes a base plate, a frame, and a clamping assembly. The clamping assembly includes a top clamping member and a plurality of side wall clamping members evenly arranged circumferentially along the top clamping member. A first noise reduction member is fixedly provided on the lower end face of the top clamping member. A vertical driving member for driving the top clamping member to move is provided at the end of the top clamping member away from the first noise reduction member. The vertical driving member is slidably connected to the frame in the vertical direction. A first positioning member for fixing the vertical driving member is inserted into the frame. The side wall clamping members are located below the top clamping member. A second noise reduction member is fixedly provided at the end of the side wall clamping member that abuts against the hydraulic breaker. A horizontal driving member for driving the side wall clamping member to move horizontally is provided at the end of the side wall clamping member away from the second noise reduction member.

[0007] By adopting the above technical solutions, the top clamping component and the side wall clamping component can stably clamp the hydraulic breaker. The first noise reduction component and the second noise reduction component can reduce the noise generated by the hydraulic breaker during the impact test, optimize the test environment, and reduce noise interference. The vertical drive component can drive the top clamping component to move vertically to realize the vertical impact test, and can be fixed to the frame by the first positioning component, which can be easily adjusted according to the height of the hydraulic breaker to achieve a better clamping effect. The horizontal drive component can drive the side wall clamping component to move horizontally, and the position of the side wall clamping component can be adjusted according to the size of the hydraulic breaker to further enhance the clamping stability of the hydraulic breaker.

[0008] Optionally, the frame is rotatably connected to the upper surface of the base plate along the horizontal axis. The upper surface of the base plate is provided with a rotation drive for driving the frame to rotate. A limiting plate is fixedly provided on the upper surface of the base plate. The frame rotates between the limiting plate and the rotation drive. The limiting plate and the rotation drive are used together to limit the rotation angle of the frame and to allow the vertical drive to drive the top clamping member to move vertically when the frame abuts against the limiting plate.

[0009] By adopting the above technical solution, the rotary drive component can drive the frame to rotate on the upper surface of the base plate. The limiting plate and the rotary drive component together limit the rotation angle of the frame, so that when the frame abuts against the limiting plate, the vertical drive component can drive the top clamping component to move vertically. This design facilitates the accurate simulation of the working scenario when the hydraulic breaker is working in the vertical direction during normal operation, restoring the working state of the hydraulic breaker under normal conditions. This is beneficial for the comprehensive and accurate testing and evaluation of the hydraulic breaker's performance.

[0010] Optionally, a hydraulic station is provided on the outer side of the base plate. The hydraulic station inputs and outputs hydraulic oil to and from the breaker through pipelines. The hydraulic station is equipped with an oil pressure gauge. A nitrogen pressure gauge is fixed at one end of the limit plate. The nitrogen pressure gauge is connected to an outlet pipe, which is connected to the nitrogen chamber of the breaker. An air inlet pipe is provided above the base plate for inputting nitrogen into the nitrogen chamber of the breaker.

[0011] By adopting the above technical solution, the hydraulic station inputs and outputs hydraulic oil into and out of the breaker hammer through pipelines. The hydraulic station is equipped with an oil pressure gauge, which can directly observe the oil pressure value inside the breaker hammer, making it easy to accurately understand the oil pressure during the impact test. The nitrogen pressure gauge is connected to the nitrogen chamber of the breaker hammer through the gas outlet pipe, which can monitor the nitrogen pressure in the nitrogen chamber of the breaker hammer in real time. Thus, it is possible to accurately monitor and control the oil pressure and nitrogen volume during the breaker hammer impact test, better reproduce the working state of the breaker hammer under normal working conditions, and improve the accuracy and reliability of the experimental data.

[0012] Optionally, a first fixing plate is fixedly connected to one end of the frame near the limiting plate. The first fixing plate is located above the limiting plate, and a second fixing plate is fixedly connected to the limiting plate. A first bolt passes through the first fixing plate, and the threaded end of the first bolt passes through the first fixing plate from top to bottom and is threadedly connected to the second fixing plate.

[0013] By adopting the above technical solution, the first bolt passes through the first fixing plate and is threadedly connected to the second fixing plate, which can firmly connect the frame and the limiting plate together, enhance the stability of the overall structure of the hydraulic breaker core impact test platform, ensure the fixed position of the frame during the experiment, avoid the impact of frame shaking on the accuracy and safety of the experiment, and make the impact experiment of the hydraulic breaker on the test platform more stable and reliable.

[0014] Optionally, the upper surface of the base plate is fixed with a box with an upper opening, the side wall clamp is slidably connected to the inside of the box, the bottom of the box is fixed with a third noise reduction component, the two side walls of the box perpendicular to the rotation axis of the frame are provided with through holes for the installation of air inlet pipe and air outlet pipe, the box is a right trapezoid, the inclined end is the opening end of the box, and the end of the box near the limiting plate is the short side end.

[0015] By adopting the above technical solutions, the box body facilitates the guidance and limitation of the movement of the side wall clamping parts, ensuring the stability of their movement; the third noise reduction component can further reduce the noise generated during the experiment and optimize the testing environment; the box body is designed as a right trapezoid, with the hypotenuse end being the open end and the end near the limiting plate being the short side end. This special shape design is not only conducive to the installation and operation of the hydraulic breaker, but also makes reasonable use of space, making the structure of the entire experimental platform more compact and reasonable, thereby better restoring the working state of the hydraulic breaker under normal conditions.

[0016] Optionally, the horizontal drive component is threadedly connected to the housing, the threaded end of the horizontal drive component abuts against the side wall clamping component, and a guide rod is fixedly provided at the end of the side wall clamping component away from the second noise reduction component. The guide rod passes through the housing and is slidably connected to the housing.

[0017] By adopting the above technical solution, the horizontal drive component is threadedly connected to the housing, and its threaded end abuts against the side wall clamping component. This allows the side wall clamping component to move horizontally within the housing when the horizontal drive component is rotated, thus achieving lateral clamping of the hydraulic breaker. This facilitates stable clamping of the hydraulic breaker for impact experiments. Simultaneously, a guide rod fixed to the end of the side wall clamping component away from the second noise reduction component passes through the housing and slides through it. This guide rod guides the movement of the side wall clamping component, ensuring the stability and accuracy of its horizontal movement, thereby ensuring the effective clamping of the hydraulic breaker and improving the accuracy and reliability of the experiment.

[0018] Optionally, the vertical drive component is fixedly connected to a crossbeam, with both ends of the crossbeam located inside the frame and having a first insertion hole. The frame has several positioning holes evenly distributed along the vertical direction, corresponding to the first insertion hole. The first positioning component passes through the positioning hole near the limiting plate, the first insertion hole, and the positioning hole away from the limiting plate in sequence.

[0019] By adopting the above technical solution, the first positioning component passes through the positioning hole near the limiting plate, the first insertion hole, and the positioning hole away from the limiting plate in sequence, which can realize the vertical driving component's positioning and fixing in the vertical direction on the frame. This allows for precise adjustment of the height position of the top clamping component to adapt to the clamping requirements of different specifications of hydraulic breakers, thereby improving the versatility and applicability of the hydraulic breaker core impact test bench.

[0020] Optionally, the first positioning component includes an integrally formed rotating part and a threaded part. The rotating part is located on the outer side of the frame near the limiting plate, and the threaded part is threadedly connected to the inner wall of the positioning hole.

[0021] By adopting the above technical solution, the rotating part allows the operator to manually rotate the first positioning component; the threaded part is threadedly connected to the inner wall of the positioning hole away from the limit plate, which can firmly fix the crossbeam and the frame together, preventing the vertical drive component from shaking or shifting during the experiment, thereby ensuring the stable clamping of the top clamping component on the breaker hammer, and improving the overall stability of the breaker hammer core impact test platform and the accuracy of the experimental results.

[0022] Optionally, the lower end of the crossbeam abuts against a positioning block, the positioning block having a second insertion hole, a second positioning element adapted to the positioning hole passing through the second insertion hole, the outer sides of the first positioning element and the second positioning element having external threads of the same specification, the positioning hole having internal threads corresponding to the external threads of the first positioning element and the second positioning element, a mounting frame fixedly provided on the lower end face of the positioning block, the mounting frame being slidably connected to the frame in the vertical direction, the end of the first positioning element near the limiting plate and the end of the second positioning element away from the limiting plate being slidably connected to a first worm gear, the first positioning element and the second positioning element being coaxially rotatably connected to the corresponding first worm gear, a support plate being provided between the first worm gear and the frame, the support plate being fixedly connected to the upper end face of the mounting frame, the first positioning element and the second positioning element being threadedly connected to the corresponding support plate, the first worm gear being meshed with a first worm, and a positioning drive element being provided on the upper end face of the mounting frame for driving the two first worm gears to rotate respectively.

[0023] By adopting the above technical solution, the lower end of the crossbeam abuts against the positioning block. The positioning block has a second insertion hole and a second positioning component that matches the positioning hole. Both the first and second positioning components have external threads of the same specification that engage with the internal threads of the positioning hole, enabling stable positioning of the crossbeam and ensuring the accuracy and stability of the vertical drive component's position. A mounting frame is fixed to the lower end of the positioning block and slides vertically against the frame, facilitating adjustment of the height of the positioning block and the crossbeam. The first and second positioning components are coaxially rotatably connected to their corresponding first worm gears. The first worm gear meshes with the first worm. The positioning drive component on the upper surface of the mounting frame drives the first worm to rotate, achieving synchronous rotation of the first and second positioning components. This allows for precise adjustment of the height of the vertical drive component, and consequently, precise adjustment of the height of the top clamping component, adapting to clamping and fixing different sized hydraulic breakers, thus improving the versatility and adaptability of the experimental platform.

[0024] Optionally, the positioning drive includes a drive gear, two driven gears, and a drive motor. The output end of the drive gear is coaxially and fixedly connected to the drive motor. The drive gear is located between the two driven gears. A first bevel gear is coaxially and fixedly connected to the driven gear. The first bevel gear meshes with a second bevel gear. The second bevel gear is coaxially and fixedly connected to a first worm. A rack is fixedly connected to the outer wall of the frame. The rack and the two driven gears are arranged sequentially in the horizontal direction. The drive gear slides in the horizontal direction and meshes with the rack and the two driven gears sequentially. A second worm wheel is coaxially and fixedly connected to the side of the drive gear closest to the limiting plate. The second worm wheel meshes with a second worm.

[0025] By adopting the above technical solution, a drive motor drives the second worm to rotate, which in turn drives the second worm wheel meshing with it to rotate. This, in turn, causes the drive gear, which is coaxially fixedly connected to the second worm wheel, to rotate. The drive gear slides horizontally and can sequentially mesh with a rack and two driven gears. When the drive gear meshes with the rack, it can drive the positioning block to move. When the drive gear meshes with the driven gears, the driven gear drives the first bevel gear, which is coaxially fixedly connected to it, to rotate. The first bevel gear drives the second bevel gear, which meshes with it, to rotate. The second bevel gear drives the first worm, which is coaxially fixedly connected to it, to rotate. This achieves the driving of the corresponding components. This transmission structure can stably and efficiently realize the transmission and conversion of power, enabling the various components of the hydraulic breaker core impact test platform to operate in an orderly and precise manner, improving the overall performance and ease of operation of the test platform.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The top clamping component and side wall clamping component can stably clamp the hydraulic breaker. The first and second noise reduction components can reduce the noise generated by the hydraulic breaker during the impact test, optimize the testing environment, and reduce noise interference. The vertical drive component can drive the top clamping component to move vertically to realize the vertical impact test, and can be fixed to the frame by the first positioning component, which can be easily adjusted according to the height of the hydraulic breaker to achieve a better clamping effect. The horizontal drive component can drive the side wall clamping component to move horizontally, and the position of the side wall clamping component can be adjusted according to the size of the hydraulic breaker to further enhance the clamping stability of the hydraulic breaker. 2. The rotary drive component can drive the frame to rotate on the upper surface of the base plate. The limiting plate and the rotary drive component together limit the rotation angle of the frame, so that when the frame abuts against the limiting plate, the vertical drive component can drive the top clamping component to move vertically. This design facilitates the accurate simulation of the working scenario when the hydraulic breaker is working in the vertical direction during normal operation, restoring the working state of the hydraulic breaker under normal conditions. This is beneficial for the comprehensive and accurate testing and evaluation of the hydraulic breaker's performance. 3. The hydraulic station inputs and outputs hydraulic oil to and from the breaker hammer through pipelines. The hydraulic station is equipped with an oil pressure gauge, which allows direct observation of the oil pressure value inside the breaker hammer, facilitating accurate understanding of the oil pressure during impact experiments. A nitrogen pressure gauge is fixed at one end of the limit plate, which is connected to the nitrogen chamber of the breaker hammer through an outlet pipe, enabling real-time monitoring of the nitrogen pressure inside the nitrogen chamber. This allows for precise monitoring and control of oil pressure and nitrogen quantity during breaker hammer impact experiments, better replicating the working state of the breaker hammer under normal operating conditions, and improving the accuracy and reliability of experimental data. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0028] Figure 2 This is a structural schematic diagram of the crossbeam, clamping assembly, and box in Embodiment 1.

[0029] Figure 3 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0030] Figure 4 This is a schematic diagram of the automatic beam positioning device and the frame in Example 2.

[0031] Figure 5 This is a schematic diagram of the automatic beam positioning device.

[0032] Explanation of reference numerals in the attached drawings: 1. Base plate; 11. Limiting plate; 111. Nitrogen pressure gauge; 112. Exhaust pipe; 113. Inlet pipe; 114. Second fixing plate; 12. Housing; 121. Third noise reduction component; 122. Through hole; 2. Frame; 21. First positioning component; 22. First fixing plate; 221. First bolt; 23. Positioning hole; 24. Rack; 3. Clamping assembly; 31. Top clamping component; 311. First noise reduction component; 32. Side wall clamping component; 321. Second noise reduction component; 322. Guide rod; 33. Vertical drive. Components; 34. Horizontal drive component; 35. Crossbeam; 351. First insertion hole; 4. Rotation drive component; 5. Hydraulic station; 51. Oil pressure gauge; 6. Positioning block; 61. Second insertion hole; 62. Mounting frame; 621. Support plate; 622. Support frame; 63. Horizontal hydraulic cylinder; 7. Second positioning component; 71. First worm gear; 72. First worm; 8. Positioning drive component; 81. Driving gear; 82. Driven gear; 83. Drive motor; 84. First bevel gear; 85. Second bevel gear; 86. Second worm gear; 87. Second worm. Detailed Implementation

[0033] The present application will be further described in detail below with reference to all the accompanying drawings.

[0034] This application discloses a hydraulic breaker core impact test bench. Example

[0035] Reference Figure 1 A hydraulic breaker impact test bench includes a base plate 1, a frame 2, and a clamping assembly 3. The base plate 1 is designed to protect the ground from damage caused by the impact of the hydraulic breaker operating vertically during the test. The frame 2 is rotatably connected to the upper surface of the base plate 1 along a horizontal axis to avoid obstruction when the hydraulic breaker to be tested is installed. The clamping assembly 3 is used to clamp and fix the hydraulic breaker.

[0036] Reference Figure 1 and Figure 2The frame 2 includes two U-shaped plates with a space between them. A connecting beam is fixedly connected to the upper part of the two U-shaped plates, and a connecting plate is fixedly connected to the vertical side of the lower part of the two U-shaped plates. A crossbeam 35 is slidably connected between the two U-shaped plates in the vertical direction. A vertical drive component 33 is fixedly connected to the crossbeam 35. The vertical drive component 33 is a hydraulic cylinder, with its cylinder body fixedly connected to the upper surface of the crossbeam 35. The telescopic end of the hydraulic cylinder passes downward through the crossbeam 35 and is fixedly connected to a top clamping component 31, which abuts against the upper end of the breaker hammer. Several side wall clamping components 32 are evenly arranged around the top clamping component 31, abutting against the side wall of the breaker hammer. The side wall clamping components 32 are located below the top clamping component 31. A box 12 with an open upper end is fixedly provided on the upper surface of the base plate 1, and the breaker hammer is placed inside the box 12. The top clamping member 31 and the side wall clamping member 32 work together through their respective driving components to achieve multi-directional clamping of the hydraulic breaker. The top clamping member 31 applies pressure from above, while the side wall clamping member 32 fixes it from the side, so that the hydraulic breaker can be firmly clamped on the test table.

[0037] Reference Figure 2 A first noise-reducing component 311 is fixedly mounted on the lower end face of the top clamping component 31, a second noise-reducing component 321 is fixedly mounted on the end of the side clamping component 32 that abuts against the hydraulic breaker, and a third noise-reducing component 121 is fixedly mounted on the bottom inside the housing 12. The first noise-reducing component 311, the second noise-reducing component 321, and the third noise-reducing component 121 reduce the noise generated during the hydraulic breaker experiment and optimize the experimental environment. The first noise-reducing component 311, the second noise-reducing component 321, and the third noise-reducing component 121 can all be made of rubber, which has good elasticity and sound absorption properties and can effectively reduce the noise generated when the top clamping component 31 contacts the hydraulic breaker. Alternatively, noise-reducing components made of silicone can be used, which also has good flexibility and sound insulation properties.

[0038] Reference Figure 1 Two bases are fixedly mounted on the upper surface of the base plate 1. Rotation drive components 4 and limiting plates 11 are respectively provided on both sides of the bases along the rotation direction of the frame 2. The limiting plates 11 are fixedly connected to the upper surface of the base plate 1, and the rotation drive components 4 are used to drive the frame 2 to rotate. The two lower ends of the frame 2 are rotatably connected to the two bases. The rotation drive component 4 can be a hydraulic cylinder, with the cylinder body rotatably connected to the base plate 1 and the telescopic end of the hydraulic cylinder rotatably connected to the frame 2. An abutment plate is fixedly mounted on the end of the limiting plate 11 closest to the frame 2, and the abutment plate is used to abut against the frame 2. Two ribs are fixedly mounted on the end of the limiting plate 11 furthest from the frame 2 to provide the fixing strength of the limiting plate 11. The limiting plate 11 and the rotation drive components 4 together limit the rotation angle of the frame 2 and ensure that the frame 2 is in abutting position with the limiting plate 11. The vertical drive component 33 can drive the top clamping component 31 to move vertically.

[0039] Reference Figure 1 and Figure 2 The crossbeam 35 has two ends located inside the frame 2 and has first insertion holes 351. The frame 2 has several positioning holes 23 evenly distributed along the vertical direction, corresponding to the first insertion holes 351. The height of the crossbeam 35 can be adjusted to accommodate different types of hydraulic breakers. The frame 2 has a first positioning component 21 inserted for fixing the vertical drive component 33. The first positioning component 21 includes an integrally formed rotating part and a threaded part. The rotating part is located on the outer side of the frame 2 near the limiting plate 11, and the threaded part is threadedly connected to the inner wall of the positioning hole 23. When the first insertion hole 351 is coaxial with one of the positioning holes 23, rotating the rotating part causes the first positioning component 21 to pass through the positioning hole 23 near the limiting plate 11, the first insertion hole 351, and the positioning hole 23 away from the limiting plate 11 in sequence, thereby fixing the crossbeam 35.

[0040] Reference Figure 1 Two lifting lugs are fixed to the upper end of the crossbeam 35 for hoisting equipment to lift the crossbeam 35. When the position of the crossbeam 35 needs to be adjusted, the hoisting equipment is connected to the lifting lugs, and the lifting and lowering of the crossbeam 35 is achieved by raising and lowering the hoisting equipment. At the same time, two holes are opened in the connecting beam at the upper end of the frame 2 for the lifting hook of the hoisting equipment to pass through and connect with the lifting lugs.

[0041] Reference Figure 1 and Figure 2 The side wall clamping member 32, at one end away from the second noise reduction member 321, is provided with a horizontal driving member 34 for driving the side wall clamping member 32 to move horizontally. The horizontal driving member 34 can be bolted. The horizontal driving member 34 is threadedly connected to the housing 12, and the threaded end of the horizontal driving member 34 abuts against the side wall clamping member 32. A guide rod 322 is fixedly provided at one end of the side wall clamping member 32 away from the second noise reduction member 321. The guide rod 322 passes through the housing 12 and is slidably connected to the housing 12.

[0042] Reference Figure 1 The housing 12 is a right trapezoid, with the hypotenuse being the open end of the housing 12, and the end of the housing 12 closest to the limiting plate 11 being the short side. During the hoisting of the breaker hammer, it moves from the short side to the long side of the housing 12. The long side can limit the breaker hammer, preventing the breaker hammer and hoisting equipment from colliding with the rotated frame 2.

[0043] Reference Figure 3 A first fixing plate 22 is fixedly connected to one end of the frame 2 near the limiting plate 11. The first fixing plate 22 is located above the limiting plate 11. A second fixing plate 114 is fixedly connected to the limiting plate 11. A first bolt 221 passes through the first fixing plate 22, with its threaded end passing from top to bottom and threadedly connected to the second fixing plate 114. This increases the connection stability between the frame 2 and the limiting plate 11, preventing the frame 2 from shaking or shifting during the experiment. Reference Figure 1A hydraulic station 5 is installed on the outer side of the base plate 1. The hydraulic station 5 supplies and supplies hydraulic oil to and from the breaker hammer through pipelines. The hydraulic station 5 is equipped with an oil pressure gauge 51. The oil pressure gauge 51 can display the pressure of the hydraulic oil in real time, allowing operators to understand the oil pressure inside the breaker hammer. The hydraulic station 5 is also used to provide power to the vertical drive component 33.

[0044] Reference Figure 1 A nitrogen cylinder is placed near the base plate 1, and the nitrogen cylinder is connected to an inlet pipe 113 for introducing nitrogen into the nitrogen chamber of the hydraulic breaker. Two side walls of the housing 12, perpendicular to the rotation axis of the frame 2, have through holes 122. The inlet pipe 113 is inserted through the through holes 122 and connected to the hydraulic breaker. The hydraulic breaker is also connected to an outlet pipe 112, which is connected to a nitrogen pressure gauge 111. The nitrogen pressure gauge 111 is fixedly connected to the upper end of the limiting plate 11, and the nitrogen pressure in the nitrogen chamber of the hydraulic breaker can be monitored through the nitrogen pressure gauge 111. By setting up the hydraulic station 5 and the nitrogen system, the oil pressure and nitrogen volume inside the hydraulic breaker can be accurately controlled, replicating the pressure environment of the hydraulic breaker under normal operating conditions, making the experimental results more accurate and reliable.

[0045] The implementation principle of this embodiment is as follows: the top clamping member 31 and the side wall clamping member 32 can stably clamp the hydraulic breaker. The first noise reduction member 311 and the second noise reduction member 321 can reduce the noise generated by the hydraulic breaker during the impact test, optimize the test environment, and reduce noise interference. The vertical drive member 33 can drive the top clamping member 31 to move in the vertical direction to realize the vertical impact test, and can be fixed to the frame 2 by the first positioning member 21, which can be easily adjusted according to the height of the hydraulic breaker to achieve a better clamping effect. The horizontal drive member 34 can drive the side wall clamping member 32 to move horizontally, and the position of the side wall clamping member 32 can be adjusted according to the size of the hydraulic breaker to further enhance the clamping stability of the hydraulic breaker. Example

[0046] The difference between this embodiment and Embodiment 1 is that an automatic positioning device for the crossbeam 35 has been added.

[0047] Reference Figure 4 and Figure 5 The lower ends of the crossbeam 35 are abutted by positioning blocks 6 on both sides, and the positioning blocks 6 are located between the two U-shaped plates of the frame 2. The positioning blocks 6 have a second insertion hole 61, and a second positioning element 7 that matches the positioning hole 23 passes through the second insertion hole 61. The outer sides of the first positioning element 21 and the second positioning element 7 have external threads of the same specification, and the positioning hole 23 has an internal thread corresponding to the external threads of the first positioning element 21 and the second positioning element 7. The second positioning element 7 is inserted into the positioning hole 23 and the second insertion hole 61 to fix and position the positioning blocks 6.

[0048] Reference Figure 5When the first positioning member 21 fixes the crossbeam 35 and the second positioning member 7 fixes the positioning block 6, the end of the first positioning member 21 near the limiting plate 11 is located outside the frame 2, and the end of the second positioning member 7 away from the limiting plate 11 is located outside the frame 2. A mounting frame 62 is fixed to the lower end face of the positioning block 6, and the mounting frame 62 is fitted onto the outside of the frame 2. A positioning drive member 8 is provided on the upper end face of the mounting frame 62 for driving the first positioning member 21 and the second positioning member 7 to rotate. Through the rotation of the first positioning member 21 and the second positioning member 7, horizontal movement of the two is achieved, allowing them to disengage from or extend into the frame 2.

[0049] Reference Figure 5 The positioning drive component 8 includes a drive gear 81 and two driven gears 82. Vertically, the drive gear 81 is located between the two driven gears 82. Both driven gears 82 are coaxially and fixedly connected to a first bevel gear 84. The first bevel gear 84 meshes with a second bevel gear 85. The second bevel gear 85 is coaxially and fixedly connected to a first worm gear 72, which meshes with a first worm wheel 71. The first worm wheel 71 corresponding to the upper driven gear 82 is coaxially and fixedly connected to the first positioning component 21, and the first worm wheel 71 corresponding to the lower driven gear 82 is coaxially and fixedly connected to the second positioning component 7. Support plates 621 are provided between each of the two first worm wheels 71 and the frame 2, with space between the support plates 621 and the frame 2. The support plates 621 are fixedly connected to the upper surface of the mounting frame 62.

[0050] Reference Figure 5 Two support plates 621 are threadedly connected to the first positioning member 21 and the second positioning member 7, respectively. Both the first positioning member 21 and the second positioning member 7 have horizontally oriented keyways on their sidewalls. The inner wall of the first worm gear 71 is fixed with a protrusion corresponding to the keyway. The keyway and protrusion allow the positioning drive member 8 to drive the first worm 72 to rotate, which in turn drives the first worm gear 71 to rotate. Thus, when the first positioning member 21 and the second positioning member 7 rotate, due to the threaded connection, the first positioning member 21 or the second positioning member 7 slides horizontally connected to the first worm gear 71. Several support plates are fixedly mounted on the upper surface of the mounting frame 62, respectively supporting the connecting shaft between the driven gear 82 and the first bevel gear 84, supporting the first worm gear 71, and supporting the connecting shaft between the second bevel gear 85 and the first worm 72. The support plates are rotatably connected to the components they support.

[0051] Reference Figure 4 and 5 A rack 24 is fixedly connected to the outer wall of the frame 2. When the drive gear 81 rotates, it drives the mounting frame 62 and the positioning block 6 to slide vertically on the frame 2 through the meshing of the drive gear 81 and the rack 24.

[0052] Reference Figure 5The rack 24 and two driven gears 82 are arranged horizontally in sequence. The driving gear 81 slides horizontally and meshes with the rack 24 and the two driven gears in sequence. A second worm gear 86 is coaxially fixedly connected to the side of the driving gear 81 near the limiting plate 11. The second worm gear 86 meshes with a second worm 87, and a drive motor 83 is coaxially fixedly connected to the second worm 87. The drive motor 83 drives the second worm 87 to rotate, which in turn drives the second worm gear 86 to rotate, causing the driving gear 81 to move horizontally and mesh with the rack 24 and the driven gears 82 in sequence, thereby realizing the power transmission and control of the positioning drive component 8. The upper end face of the mounting frame 62 is provided with a support frame 622 for mounting the second worm gear 86, the second worm 87 and the driving gear 81. The second worm gear 86, the second worm 87 and the driving gear 81 are rotatably connected to the support frame 622. A horizontal hydraulic cylinder 63 for pushing the support frame 622 is fixedly provided on the upper end face of the mounting frame 62. Two stop bars are fixed on the upper surface of the mounting frame 62 to limit the movement of the support frame 622. The two stop bars are located on both sides of the support frame 622 parallel to the direction of movement.

[0053] The specific adjustment steps for positioning block 6 are as follows: the drive motor 83 drives the drive gear 81 to rotate, and the driven gear 82 connected to the first positioning member 21 meshes with the drive gear 81, causing the first positioning member 21 to disengage from the frame 2 and the crossbeam 35. The hoisting device then causes the crossbeam 35 to disengage from the positioning block 6. The horizontal hydraulic cylinder 63 pushes the drive motor 83 and the drive gear 81 to move, causing the drive gear 81 to disengage from the upper driven gear 82. The drive gear 81 then meshes with the lower driven gear 82, thereby causing the second positioning member 7 to disengage from the frame 2 and the positioning block 6. The horizontal hydraulic cylinder 63 continues to push the drive motor 83 and the drive gear 81 to move, causing the drive gear 81 to disengage from the upper driven gear 82. The drive gear 81 then meshes with the lower driven gear 82, thereby causing the second positioning member 7 to disengage from the frame 2 and the positioning block 6. The machine 83 and the drive gear 81 move, causing the drive gear 81 to disengage from the driven gear 82 below. The drive gear 81 meshes with the rack 24, driving the positioning block 6 to move vertically until the second insertion hole 61 of the positioning block 6 is coaxial with the positioning hole 23 of the frame 2 at the required position. Reversing the above operation, the drive gear 81 disengages from the rack 24 and meshes with the driven gear 82 below and the driven gear 82 above in sequence, so that the second positioning member 7 fixes the positioning block 6 and the frame 2, the hoisting device drives the crossbeam 35 to fall onto the upper surface of the positioning block 6, and the first positioning member 21 fixes the frame 2 and the crossbeam 35.

[0054] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hydraulic breaker core impact test bench, comprising a base plate (1), a frame (2), and a clamping assembly (3), characterized in that: The clamping assembly (3) includes a top clamping member (31) and a plurality of side wall clamping members (32) evenly arranged around the top clamping member (31). A first noise reduction member (311) is fixedly provided on the lower end face of the top clamping member (31). A vertical drive member (33) for driving the top clamping member (31) to move is provided at the end of the top clamping member (31) away from the first noise reduction member (311). The vertical drive member (33) is slidably connected to the frame (2) in the vertical direction. A first positioning member (21) for fixing the vertical drive member (33) is inserted into the frame (2). The side wall clamping members (32) are located below the top clamping member (31). A second noise reduction member (321) is fixedly provided at the end of the side wall clamping member (32) that abuts against the breaker hammer. A horizontal drive member (34) for driving the side wall clamping member (32) to move horizontally is provided at the end of the side wall clamping member (32) away from the second noise reduction member (321).

2. The hydraulic breaker core impact test stand according to claim 1, characterized in that: The frame (2) is rotatably connected to the upper surface of the base plate (1) along the horizontal axis. The upper surface of the base plate (1) is provided with a rotation drive (4) for driving the frame (2) to rotate. A limiting plate (11) is fixed on the upper surface of the base plate (1). The frame (2) rotates between the limiting plate (11) and the rotation drive (4). The limiting plate (11) and the rotation drive (4) are used together to limit the rotation angle of the frame (2) and make the vertical drive (33) drive the top clamping member (31) to move vertically when the frame (2) abuts against the limiting plate (11).

3. The hydraulic breaker core impact test stand according to claim 2, characterized in that: A hydraulic station (5) is provided on the outside of the base plate (1). The hydraulic station (5) inputs and outputs hydraulic oil into the breaker through pipelines. The hydraulic station (5) is equipped with an oil pressure gauge (51). A nitrogen pressure gauge (111) is fixed at one end of the limit plate (11). The nitrogen pressure gauge (111) is connected to an air outlet pipe (112). The air outlet pipe (112) is connected to the nitrogen chamber of the breaker. An air inlet pipe (113) is provided above the base plate (1). The air inlet pipe (113) is used to input nitrogen into the nitrogen chamber of the breaker.

4. The hydraulic breaker core impact test stand according to claim 2, characterized in that: The frame (2) is fixedly connected to a first fixing plate (22) at one end near the limiting plate (11). The first fixing plate (22) is located above the limiting plate (11). The limiting plate (11) is fixedly connected to a second fixing plate (114). The first fixing plate (22) is provided with a first bolt (221). The threaded end of the first bolt (221) passes through the first fixing plate (22) from top to bottom and is threadedly connected to the second fixing plate (114).

5. The hydraulic breaker core impact test stand according to claim 3, characterized in that: The upper surface of the base plate (1) is fixed with a box (12) with an upper opening. The side wall clamp (32) is slidably connected to the inside of the box (12). The bottom of the box (12) is fixed with a third noise reduction component (121). The two side walls of the box (12) perpendicular to the rotation axis of the frame (2) are provided with through holes (122). The through holes (122) are used for the installation of the air inlet pipe (113) and the air outlet pipe (112). The box (12) is a right trapezoid with the hypotenuse end being the opening end of the box (12). The end of the box (12) near the limiting plate (11) is the short side end.

6. The hydraulic breaker core impact test stand according to claim 5, characterized in that: The horizontal drive member (34) is threadedly connected to the housing (12). The threaded end of the horizontal drive member (34) abuts against the side wall clamping member (32). The side wall clamping member (32) is fixed with a guide rod (322) at one end away from the second noise reduction member (321). The guide rod (322) passes through the housing (12) and is slidably connected to the housing (12).

7. The hydraulic breaker core impact test stand according to claim 2, characterized in that: The vertical drive component (33) is fixedly connected to a crossbeam (35). The two ends of the crossbeam (35) are located inside the frame (2) and are provided with first insertion holes (351). The frame (2) is provided with a number of positioning holes (23) corresponding to the first insertion holes (351) evenly in the vertical direction. The first positioning component (21) passes through the positioning hole (23) near the limiting plate (11), the first insertion hole (351) and the positioning hole (23) away from the limiting plate (11) in sequence.

8. The hydraulic breaker core impact test stand according to claim 7, characterized in that: The first positioning component (21) includes an integrally formed rotating part and a threaded part. The rotating part is located on the outer side of the frame (2) near the limiting plate (11), and the threaded part is threadedly connected to the inner wall of the positioning hole (23).

9. The hydraulic breaker core impact test stand according to claim 7, characterized in that: The lower end of the crossbeam (35) abuts against a positioning block (6). The positioning block (6) has a second insertion hole (61). A second positioning element (7) that matches the positioning hole (23) passes through the second insertion hole (61). The outer sides of the first positioning element (21) and the second positioning element (7) have external threads of the same specification. The positioning hole (23) has an internal thread that corresponds to the external threads of the first positioning element (21) and the second positioning element (7). The lower end face of the positioning block (6) is fixed with a mounting frame (62). The mounting frame (62) is slidably connected to the frame (2) in the vertical direction. The end of the first positioning element (21) near the limiting plate (11) and the second positioning element (7) are connected. The end away from the limiting plate (11) is slidably connected to the first worm gear (71). The first positioning component (21) and the second positioning component (7) are coaxially rotatably connected to the corresponding first worm gear (71). A support plate (621) is provided between the first worm gear (71) and the frame (2). The support plate (621) is fixedly connected to the upper end face of the mounting frame (62). The first positioning component (21) and the second positioning component (7) are threadedly connected to the corresponding support plate (621). The first worm gear (71) is meshed with the first worm (72). The upper end face of the mounting frame (62) is provided with a positioning drive component (8) for driving the two first worms (72) to rotate respectively.

10. The hydraulic breaker core impact test stand according to claim 9, characterized in that: The positioning drive component (8) includes a drive gear (81), two driven gears (82) and a drive motor (83). The output end of the drive gear (81) is coaxially fixedly connected to the drive motor (83). The drive gear (81) is located between the two driven gears (82). The driven gears (82) are coaxially fixedly connected to a first bevel gear (84). The first bevel gear (84) is meshed with a second bevel gear (85). The second bevel gear (85) is coaxially fixedly connected to a first worm (72). A rack (24) is fixedly connected to the outer wall of the frame (2). The rack (24) and the two driven gears (82) are arranged in sequence along the horizontal direction. The drive gear (81) slides along the horizontal direction and meshes with the rack (24) and the two driven gears in sequence. A second worm wheel (86) is coaxially fixedly connected to the side of the drive gear (81) near the limiting plate (11). The second worm wheel (86) is meshed with a second worm (87).

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