Pressure resistance test platform suitable for multiple types of mining hydraulic oil cylinders

Abstract

The invention relates to the technical field of pressure resistance testing, and discloses a pressure resistance testing platform suitable for multiple types of mining hydraulic oil cylinders, the pressure resistance testing platform comprises a platform base body, a hydraulic control system and a control panel are fixedly assembled at the top of the platform base body, and a testing bin is further arranged at the top of the platform base body; a filtering pump station is fixedly assembled on the outer wall of the testing bin, a hydraulic oil cylinder is placed on the inner wall of the top of the testing bin, a connecting pipeline system is clamped to the top of the hydraulic oil cylinder, and the hydraulic control system and the filtering pump station are electrically connected with a control panel. Liquid communication between the main cavity and the test cavity is realized by the test bin through the guide plate, and the circulating filtration function of the filter pump station is matched to ensure that the liquid in the test cavity is clean and prevent foreign matters from interfering with leakage observation; an optional ultrasonic generator is used for further cleaning adherends on the inner wall of the test cavity, and foreign matters are transferred to the main cavity through liquid flow, so that the accuracy and reliability of a test result are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure resistance testing, and specifically provides a pressure resistance testing platform applicable to multiple models of mine hydraulic cylinders. Background Art

[0002] As a core power component in mining equipment, hydraulic cylinders are widely used in underground roadheaders, hydraulic supports, transportation machinery and other fields. Their sealing performance and pressure resistance directly affect the safety and operating efficiency of the equipment. To ensure the reliability of hydraulic cylinders under complex underground working conditions, pressure resistance testing is an essential link in the production and quality inspection processes.

[0003] In the prior art, the pressure resistance testing platform for hydraulic cylinders usually adopts a fixed connection method. The cylinder is connected to the test pipeline through a threaded or flange structure, and a hydraulic pump is used to provide the test pressure. A pressure sensor is combined to monitor the sealing and pressure resistance performance of the cylinder.

[0004] However, the existing testing platforms have the following deficiencies: Traditional testing platforms are usually designed for specific models of hydraulic cylinders and are difficult to adapt to various specifications of cylinders underground. It is necessary to frequently replace connection components or special fixtures, resulting in low testing efficiency. The threaded or flange connection methods are cumbersome to operate, time-consuming for installation and disassembly, and affect the progress of batch testing. Existing platforms mostly rely on manual adjustment of pressure and data recording, lacking intelligent control and data management functions, and it is difficult to meet the requirements of modern industry for the high efficiency of the testing process and data traceability. Summary of the Invention

[0005] The present invention provides a pressure resistance testing platform applicable to multiple models of mine hydraulic cylinders, which solves the problems raised in the above background art.

[0006] The present invention provides the following technical solution: A pressure resistance testing platform applicable to multiple models of mine hydraulic cylinders, including a platform base body. A hydraulic control system and a control panel are fixedly assembled on the top of the platform base body. A test chamber is also provided on the top of the platform base body. A filter pumping station is fixedly assembled on the outer wall of the test chamber. A hydraulic cylinder is placed on the inner wall of the top of the test chamber. A connection pipeline system is clamped on the top of the hydraulic cylinder. The hydraulic control system and the filter pumping station are electrically connected to the control panel.

[0007] As a preferred technical solution of the present invention, the hydraulic control system includes an oil tank and a hydraulic pump. One side of the output end of the hydraulic pump is fixedly assembled with a pump output end. Two output pipelines are arranged on the outer wall of the pump output end. A radiator is fixedly assembled on the top of the oil tank. A circulation pipeline is fixedly assembled on the outer wall of the radiator. A motor is fixedly assembled on the top of the oil tank. One side of the output shaft of the motor is fixedly assembled with a pressurizing device, and a pressurizing device is fixedly assembled on the outer wall of the motor.

[0008] As a preferred technical solution of the present invention, the radiator is communicated with the oil tank, the circulation pipeline is communicated with the oil tank, and the radiator further includes a cooling fan. The radiator, the circulation pipeline and the oil tank form a circulation path. The two pressurizing devices are respectively communicated with one side of the two connection pipeline systems. The two output pipelines are respectively communicated with the other side of the two connection pipeline systems. The input port of the pump output end is communicated with the oil tank.

[0009] As a preferred technical solution of the present invention, the test chamber includes a main chamber and a test chamber. Flow guiding openings are provided at the tops of the adjacent sides of the main chamber and the test chamber. Flow guiding plates are fixedly assembled at the flow guiding openings. A top fixing frame is fixedly assembled on the inner wall top of the main chamber. A top support plate is fixedly assembled on the top of the top fixing frame.

[0010] As a preferred technical solution of the present invention, the hydraulic cylinder is placed on the inner wall of the test chamber. The main chamber and the test chamber are connected by a flow guiding plate, and the flow guiding plate is inclined towards the main chamber side; The filter pumping station is arranged on the outer wall of one side of the main chamber. The input port of the filter pumping station is communicated with the main chamber, and the output port of the filter pumping station is communicated with the test chamber.

[0011] As a preferred technical solution of the present invention, the connection pipeline system includes a connector. Side through holes are provided on both sides of the connector. A middle limiting groove is provided in the middle of the connector. A telescopic mechanism is fixedly assembled on the inner wall of the side through hole. A push ring is fixedly assembled at the top telescopic end of the telescopic mechanism. A plurality of pressing ring plates are annularly fixedly assembled at the bottom of the push ring. A ball is inlaid on one side of the pressing ring plate close to the axis of the middle limiting groove. A cover plate is fixedly assembled on the top of the connector by screws. A sliding groove and fixing holes are annularly provided on the top of the cover plate. A fixing ring plate is annularly fixedly assembled at the bottom of the cover plate. A sealing sleeve is arranged on the inner wall of the middle limiting groove.

[0012] As a preferred technical solution of the present invention, the positions of the fixed ring plate and the pressing ring plate correspond to each other. A plurality of the pressing ring plates are sleeved outside a plurality of the fixed ring plates. The sealing sleeve is located on the inner wall of a plurality of the fixed ring plates. The pressing ring plates are slidably sleeved on the inner wall of the sliding groove. A plurality of the pressing ring plates, the fixed ring plates and the middle limiting grooves are located on the same axis; The thickness of the fixed ring plate on the side away from the cover plate is greater than the thickness of the fixed ring plate on the side close to the cover plate.

[0013] As a preferred technical solution of the present invention, the hydraulic cylinder includes a cylinder body. A hydraulic interface is slidably sleeved in the inner cavity of the cylinder body. Piston rods are fixedly assembled on the outer walls on both sides of the cylinder body.

[0014] As a preferred technical solution of the present invention, the control panel includes a display module, an input module, a processor module, a data storage module and a communication interface; The display module is fixedly assembled on the outer surface of the control panel and is used for displaying test parameters in real time, including the pressure test time of the upper cavity, the time to reach pressure in the upper cavity, the end time of the upper cavity, the maximum pressure in the upper cavity, the pressure test time of the lower cavity, the time to reach pressure in the lower cavity, the end time of the lower cavity, the maximum pressure in the lower cavity, and the test status prompt; The input module is arranged on the outer surface of the control panel and includes manual input keys and a touch screen, and is used for inputting test pressure parameters, selecting a test mode and triggering a test instruction; The processor module is electrically connected to the display module, the input module, the data storage module and the communication interface. The processor module is respectively electrically connected to the hydraulic control system and the connecting pipeline system, and is used for processing the input test parameters, controlling the liquid supply and pressurization process of the hydraulic oil, and monitoring the pressure change during the test process; The data storage module is used for recording test data, including the test date, the pressure holding time, the product name, the product specification, the product number and the information of the pressure test personnel; The communication interface is arranged on the side of the control panel and is used for exporting test data through an external storage device or connecting to an external monitoring system; Among them, the control panel realizes the coordinated control of the hydraulic control system and the connecting pipeline system through the processor module, supports the switching between the manual mode and the automatic mode, and prompts the pressure zero state through the display module after the test is completed.

[0015] The present invention has the following beneficial effects: 1. For the pressure resistance test platform applicable to multi-model mining hydraulic cylinders, the connecting pipeline system adopts a sealing sleeve with a replaceable inner diameter, and cooperates with a quick connection mechanism and the extrusion design of the pressing ring plate and the fixed ring plate, which can adapt to the interface specifications of 95% of hydraulic cylinders. There is no need for special fixtures or complex adjustments, which significantly improves the versatility of the test platform and reduces the cost for enterprises to purchase special equipment for different cylinder models; Compared with traditional threaded or flange connections, the connecting pipeline system achieves quick sealed socket connection through a telescopic mechanism, shortening the connection time to within a few seconds and significantly improving the installation and disassembly efficiency of the oil cylinder. The coordinated action of the hydraulic control system and the control panel supports automated liquid injection, pressurization, and unloading processes, significantly shortening the single test cycle and meeting the high-efficiency requirements of batch production testing.

[0016] 2. For the pressure resistance test platform applicable to multiple models of mine hydraulic cylinders, the test chamber realizes the liquid connection between the main chamber and the test chamber through a flow guide plate. Combining with the circulating filtration function of the filtration pump station, it ensures the cleanliness of the liquid in the test chamber and avoids foreign object interference with leakage observation. The optional ultrasonic generator further cleans the adhesions on the inner wall of the test chamber, transfers foreign objects to the main chamber through liquid flow, and significantly improves the accuracy and reliability of the test results. Brief Description of the Drawings

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the present invention; Figure 2 It is a structure schematic diagram of the test chamber of the present invention; Figure 3 It is a structure schematic diagram of the hydraulic control system of the present invention; Figure 4 It is a structure schematic diagram of the hydraulic cylinder of the present invention; Figure 5 It is a sectional structure schematic diagram of the connecting pipeline system of the present invention; Figure 6 It is an exploded structure schematic diagram of the connecting pipeline system of the present invention; Figure 7 It is a structure schematic diagram of the fixed ring plate of the present invention; Figure 8 It is a sectional structure schematic diagram of the test chamber of the present invention.

[0018] In the figure: 1. Platform base; 2. Hydraulic control system; 3. Control panel; 4. Test chamber; 5. Filtration pump station; 6. Connecting pipeline system; 7. Hydraulic cylinder; 201. Oil tank; 202. Hydraulic pump; 203. Pump output end; 204. Output pipeline; 205. Radiator; 206. Circulation pipeline; 207. Motor; 208. Pressurization device; 401. Main chamber; 402. Test chamber; 403. Flow guide port; 404. Flow guide plate; 405. Top fixing frame; 406. Top support plate; 601. Connector; 602. Side through hole; 603. Middle limit groove; 604. Telescopic mechanism; 605. Pushing ring; 606. Pressing ring plate; 607. Ball; 608. Cover plate; 609. Sliding groove; 610. Fixing hole; 611. Fixing ring plate; 612. Sealing sleeve 701. Cylinder block; 702. Piston rod; 703. Hydraulic interface Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention

[0020] Please refer to Figures 1-8 , a pressure resistance test platform applicable to multi-model mine hydraulic cylinders, including a platform base 1, a hydraulic control system 2 and a control panel 3 are fixedly assembled on the top of the platform base 1, a test chamber 4 is also arranged on the top of the platform base 1, a filter pumping station 5 is fixedly assembled on the outer wall of the test chamber 4, a hydraulic cylinder 7 is placed on the inner wall of the top of the test chamber 4, a connecting pipeline system 6 is clamped on the top of the hydraulic cylinder 7, and the hydraulic control system 2 and the filter pumping station 5 are electrically connected to the control panel 3

[0021] In a preferred implementation mode: the hydraulic control system 2 includes an oil tank 201 and a hydraulic pump 202, a pump output end 203 is fixedly assembled on one side of the output end of the hydraulic pump 202, two groups of output pipelines 204 are arranged on the outer wall of the pump output end 203, a radiator 205 is fixedly assembled on the top of the oil tank 201, a circulation pipeline 206 is fixedly assembled on the outer wall of the radiator 205, a motor 207 is fixedly assembled on the top of the oil tank 201, a pressurizing device 208 is fixedly assembled on one side of the output shaft of the motor 207, and a pressurizing device 208 is fixedly assembled on the outer wall of the motor 207

[0022] In a preferred implementation mode: the radiator 205 is communicated with the oil tank 201, the circulation pipeline 206 is communicated with the oil tank 201, the radiator 205 further includes a cooling fan, the radiator 205, the circulation pipeline 206 and the oil tank 201 form a circulation path, two groups of pressurizing devices 208 are respectively communicated with one side of two groups of connecting pipeline systems 6, two groups of output pipelines 204 are respectively communicated with the other side of two groups of connecting pipeline systems 6, and the input port of the pump output end 203 is communicated with the oil tank 201

[0023] In the above structure, through the hydraulic control system 2, the hydraulic pump 202 drives the operation of the pump output end 203. The hydraulic oil in the inner cavity of the fuel tank 201 is transmitted to the output pipeline 204 through the pump output end 203 for output. The two groups of output pipelines 204 are respectively connected to the two groups of connecting pipeline systems 6, so that the hydraulic oil is transmitted to the inner cavity of the hydraulic cylinder 7 through the connecting pipeline system 6. When the hydraulic cylinder 7 is tested for its cylinder sealing performance through equipment, the input amount of the hydraulic oil in the inner cavity of the hydraulic cylinder 7 can be controlled according to the parameters preset in the inner cavity of the control panel 3. By setting the motor 207, the motor 207 drives the operation of the booster device 208. The two groups of booster devices 208 are respectively connected to the two groups of connecting pipeline systems 6. After the inner cavity of the hydraulic cylinder 7 transmits the hydraulic oil through the connecting pipeline system 6, the motor 207 and the booster device 208 can further pressurize the hydraulic cylinder 7, so as to realize the pressure resistance detection of the inner cavity of the hydraulic cylinder 7.

[0024] In a preferred embodiment: The test chamber 4 includes a main chamber 401 and a test chamber 402. Flow guiding openings 403 are provided at the tops of the adjacent sides of the main chamber 401 and the test chamber 402. Flow guiding plates 404 are fixedly assembled at the flow guiding openings 403. A top fixing frame 405 is fixedly assembled at the top of the inner wall of the main chamber 401, and a top support plate 406 is fixedly assembled at the top of the top fixing frame 405.

[0025] In a preferred embodiment: The hydraulic cylinder 7 is placed on the inner wall of the test chamber 402. The main chamber 401 and the test chamber 402 are connected through the flow guiding plate 404, and the flow guiding plate 404 is inclined towards the main chamber 401; The filter pumping station 5 is arranged on the outer wall of one side of the main chamber 401. The input port of the filter pumping station 5 is communicated with the main chamber 401, and the output port of the filter pumping station 5 is communicated with the test chamber 402.

[0026] In the above structure, by providing the flow guiding openings 403 and connecting the main chamber 401 and the test chamber 402 through the flow guiding plates 404, when the hydraulic cylinder 7 is placed on the inner wall of the test chamber 402 for testing, the liquid in the inner cavity of the test chamber 402 can be guided to the inner cavity of the main chamber 401 through the flow guiding plates 404, so that the foreign matters in the liquid in the test chamber 402 are transmitted to the inner cavity of the main chamber 401, thus avoiding the problem that the presence of foreign matters in the liquid in the test chamber 402 causes the inability to clearly observe whether there is leakage when the hydraulic cylinder 7 is being detected; By connecting the input port of the filter pumping station 5 with the main chamber 401 and the output port of the filter pumping station 5 with the test chamber 402, the liquid in the inner cavity of the main chamber 401 can be filtered through the filter pumping station 5, and at the same time, the liquid is transmitted to the inner cavity of the test chamber 402 through the filter pumping station 5 to ensure that the liquid in the inner cavity of the test chamber 402 can completely cover the hydraulic cylinder 7; By setting up the filtration pumping station 5, when the hydraulic cylinder 7 located inside the test cavity 402 has a hydraulic oil leakage problem during detection, the filtration pumping station 5 can be directly started to make the liquid in the inner cavity of the main cavity 401 be transmitted to the test cavity 402 through the filtration pumping station 5, and the liquid in the inner cavity of the test cavity 402 be transmitted to the main cavity 401 through the diversion plate 404 and be filtered through the filtration pumping station 5, so as to realize the purification of the liquid in the test cavity 402 and further. Optionally, an ultrasonic generator can be embedded in the bottom inner cavity of the test cavity 402 to ultrasonically clean the foreign matters in the inner cavity of the test cavity 402, and the liquid be transmitted to the inner cavity of the test cavity 402 through the filtration pumping station 5, and the foreign matters be driven to move into the main cavity 401 by the flow of the liquid, thus solving the problem that the hydraulic oil adheres to and covers the inner wall of the test cavity 402.

[0027] In a preferred embodiment: The connecting pipeline system 6 includes a connector 601. Side through holes 602 are opened on both sides of the connector 601, and a middle limiting groove 603 is opened in the middle of the connector 601. A telescopic mechanism 604 is fixedly assembled on the inner wall of the side through hole 602. The top telescopic end of the telescopic mechanism 604 is fixedly assembled with a push ring 605. A plurality of pressing ring plates 606 are annularly fixedly assembled at the bottom of the push ring 605. A ball 607 is embedded on the side close to the axis of the middle limiting groove 603 of the pressing ring plate 606. The top of the connector 601 is fixedly assembled with a cover plate 608 through screws. A sliding groove 609 and a fixing hole 610 are respectively annularly opened on the top of the cover plate 608. A fixing ring plate 611 is annularly fixedly assembled at the bottom of the cover plate 608. A sealing sleeve 612 is arranged on the inner wall of the middle limiting groove 603.

[0028] In a preferred embodiment: The positions of the fixing ring plate 611 and the pressing ring plates 606 correspond to each other. A plurality of pressing ring plates 606 are sleeved outside a plurality of fixing ring plates 611. The sealing sleeve 612 is located inside the inner walls of a plurality of fixing ring plates 611. The pressing ring plates 606 are slidably sleeved on the inner wall of the sliding groove 609. A plurality of pressing ring plates 606, the fixing ring plate 611 and the middle limiting groove 603 are located on the same axis. The thickness of the fixing ring plate 611 on the side far from the cover plate 608 is greater than the thickness of the fixing ring plate 611 on the side close to the cover plate 608.

[0029] In the above structure, it is fixedly assembled through the cover plate 608 and the connector 601. The sealing sleeve 612 is sleeved on the outer wall of the piston rod 702, and a number of fixed ring plates 611 are sleeved on the outer wall of the sealing sleeve 612. The telescopic mechanism 604 drives the push ring 605 to move towards the side of the fixed ring plate 611, so that the push ring 605 drives a number of pressing ring plates 606 to move towards the side of the fixed ring plate 611. The inner wall of the middle limiting groove 603 abuts against the outer wall of the pressing ring plate 606. The ball 607 is in rolling connection with the outer wall of the fixed ring plate 611. At the same time, the thickness of the fixed ring plate 611 on the side away from the cover plate 608 is greater than the thickness of the fixed ring plate 611 on the side close to the cover plate 608. When the pressing ring plate 606 drives the ball 607 to move towards the side of the fixed ring plate 611, the pressing ring plate 606 increases the abutting pressure on the fixed ring plate 611 through the ball 607, so that the fixed ring plate 611 squeezes the sealing sleeve 612, and further realizes the sealed sleeving of the sealing sleeve 612 and the piston rod 702; By replacing the sealing sleeve 612 with the same outer diameter but different inner diameters, the connection pipeline system 6 can be quickly connected to hydraulic cylinders 7 of different models.

[0030] In a preferred embodiment: The hydraulic cylinder 7 includes a cylinder block 701, and a hydraulic interface 703 is slidably sleeved in the inner cavity of the cylinder block 701. Piston rods 702 are fixedly assembled on the outer walls on both sides of the cylinder block 701.

[0031] In the above structure, during the test, the hydraulic cylinder 7 is placed in the inner cavity of the test chamber 402 through a hoisting arrangement. The sealing sleeve 612 is sleeved on the outer wall of the piston rod 702, and the bottom arc direction of the connector 601 is arranged to be the same as the arc direction of the cylinder block 701. The control panel 3 controls the telescopic mechanism 604, so that the telescopic mechanism 604 drives the pressing ring plate 606 to move towards the side of the fixed ring plate 611 through the push ring 605. Further, the pressing ring plate 606 squeezes the fixed ring plate 611 through the ball 607, so that the part of the sealing sleeve 612 sleeved on the piston rod 702 is squeezed and contracted, thereby realizing the quick connection between the connection pipeline system 6 and the hydraulic cylinder 7, and solving the problem that the traditional test platform needs to frequently rotate the threaded structure, resulting in slow connection between pipelines.

[0032] In a preferred embodiment: The control panel 3 includes a display module, an input module, a processor module, a data storage module and a communication interface; The display module is fixedly assembled on the outer surface of the control panel 3 and is used to display test parameters in real time, including the upper cavity pressure test time, the upper cavity pressure reaching time, the upper cavity end time, the upper cavity maximum pressure, the lower cavity pressure test time, the lower cavity pressure reaching time, the lower cavity end time, the lower cavity maximum pressure and the test status prompt; The input module is arranged on the outer surface of the control panel 3 and includes a manual input button and a touch screen, and is used for inputting test pressure parameters, selecting a test mode, and triggering a test instruction; The processor module is electrically connected to the display module, the input module, the data storage module, and the communication interface. The processor module is respectively electrically connected to the hydraulic control system 2 and the connecting pipeline system 6, and is used for processing the input test parameters, controlling the liquid supply and pressurization process of the hydraulic oil, and monitoring the pressure change during the test; The data storage module is used for recording test data, including the test date, the pressure holding time, the product name, the product specification, the product number, and the information of the pressure test personnel; The communication interface is arranged on the side of the control panel 3 and is used for exporting test data through an external storage device or connecting to an external monitoring system; Among them, the control panel 3 realizes the coordinated control of the hydraulic control system 2 and the connecting pipeline system 6 through the processor module, supports the switching between the manual mode and the automatic mode, and prompts the pressure zero state through the display module after the test is completed.

[0033] Working principle: The operator starts the power supply of the test platform, and the control panel 3 enters the initialization interface to prompt the device self-check state.

[0034] The processor module performs self-check on the hydraulic control system 2, the connecting pipeline system 6, and the sensors to ensure that each component operates normally; Parameter setting: The operator manually inputs test parameters through the input module, including: the test pressure required by the drawing, the test mode, the information of the test object. The input parameters are stored in the data storage module through the processor module and are displayed in real time on the display module for confirmation. The hydraulic control system 2 is started, and the liquid in the main cavity 401 is filtered and injected into the test cavity 402 to ensure that the liquid in the test cavity 402 is clean and reaches the preset liquid level. The hydraulic cylinder 7 to be tested is placed on the inner wall of the test cavity 402 using a lifting device, ensuring that the piston rod 702 faces the connecting pipeline system 6; The liquid in the test cavity 402 completely covers the hydraulic cylinder 7, which is convenient for subsequent leakage observation. According to the size of the piston rod 702, a sealing sleeve 612 with a suitable inner diameter is selected and installed in the connecting head 601; The control panel 3 sends instructions through the processor module to drive the telescopic mechanism 604. The telescopic mechanism 604 pushes the push ring 605, driving the pressing ring plate 606 to move towards the fixed ring plate 611. The pressing ring plate 606 applies a squeezing force to the fixed ring plate 611 through the balls 607, compressing the sealing sleeve 612 to achieve a sealed socket connection with the piston rod 702. The larger thickness design on the side of the fixed ring plate 611 away from the cover plate 608 ensures a gradual increase in the squeezing force, improving the sealing reliability. After the connection is completed, the display module prompts "Connection completed", and it is confirmed that there is no leakage in the hydraulic cylinder 7 and the connection pipeline system 6; The operator clicks the "Lower cavity pressure test" button through the input module, and the processor module controls the hydraulic control system 2 to start; The hydraulic pump 202 extracts hydraulic oil from the fuel tank 201 through the pump output end 203, and injects it into the lower cavity of the hydraulic cylinder 7 of the oil cylinder through the output pipeline 204 and the connection pipeline connection pipeline system 6; the display module real-time displays the state of "Liquid entering the lower cavity", and updates the current liquid level and pressure data; When the lower cavity of the oil cylinder is filled with hydraulic oil, the processor module automatically stops the liquid supply of the hydraulic pump 202 according to the feedback signal of the pressure sensor; the system enters the pressure holding state, and the control panel 3 displays the pressure holding time and pressure value through the display module. The operator observes whether there are any signs of leakage in the liquid in the test cavity 402; If leakage is detected, the filter pumping station 5 is started, and the liquid in the test cavity 402 is guided back to the main cavity 401 through the guide plate 404, and after filtration, it is re-injected to ensure a clean test environment; the booster device 208 applies high pressure to the lower cavity of the hydraulic cylinder 7 through the connection pipeline system 6, up to 52 MPa at most, meeting the pressure resistance test requirements of 95% of the downhole hydraulic cylinders 7; the processor module monitors the pressure change in real time, and the display module updates the pressure curve, the pressure reaching time and the maximum pressure value; During the test process, the radiator 205 and the circulation pipeline 206 form a hydraulic oil circulation path to prevent the oil temperature from being too high and ensure the system stability; the operator clicks the "Unload" button, and the processor module controls the hydraulic control system 2 to release the pressure in the inner cavity of the hydraulic cylinder 7; the hydraulic oil flows back to the fuel tank 201 through the connection pipeline system 6, and the display module prompts "Pressure returned to zero"; the filter pumping station 5 continues to operate to circulate and filter the liquid in the test cavity 402 to keep the test environment clean; Finally, the hydraulic cylinder 7 is disassembled to complete a single test process.

[0035] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure resistance test platform applicable to multiple models of mine hydraulic cylinders, including a platform base body (1), characterized in that: At the top of the platform base body (1), a hydraulic control system (2) and a control panel (3) are fixedly assembled. At the top of the platform base body (1), a test chamber (4) is also provided. A filter pumping station (5) is fixedly assembled on the outer wall of the test chamber (4). A hydraulic cylinder (7) is placed on the inner wall of the top of the test chamber (4). A connecting pipeline system (6) is clamped at the top of the hydraulic cylinder (7). The hydraulic control system (2) and the filter pumping station (5) are electrically connected to the control panel (3).

2. The pressure resistance test platform applicable to multi-model mine hydraulic cylinders according to claim 1, characterized in that: The hydraulic control system (2) includes an oil tank (201) and a hydraulic pump (202). On one side of the output end of the hydraulic pump (202), a pump output end (203) is fixedly assembled. Two groups of output pipelines (204) are arranged on the outer wall of the pump output end (203). A radiator (205) is fixedly assembled on the top of the oil tank (201). A circulation pipeline (206) is fixedly assembled on the outer wall of the radiator (205). A motor (207) is fixedly assembled on the top of the oil tank (201). On one side of the output shaft of the motor (207), a boosting device (208) is fixedly assembled. The boosting device (208) is fixedly assembled on the outer wall of the motor (207).

3. The pressure resistance test platform for multi-model mining hydraulic cylinders according to claim 2, characterized in that: The radiator (205) is communicated with the oil tank (201). The circulation pipeline (206) is communicated with the oil tank (201). The radiator (205) further includes a cooling fan. The radiator (205), the circulation pipeline (206) and the oil tank (201) form a circulation path. The two groups of boosting devices (208) are respectively communicated with one side of the two groups of connecting pipeline systems (6). The two groups of output pipelines (204) are respectively communicated with the other side of the two groups of connecting pipeline systems (6). The input port of the pump output end (203) is communicated with the oil tank (201).

4. The pressure resistance test platform applicable to multi-model mine hydraulic cylinders according to claim 1, characterized in that: The test chamber (4) includes a main chamber (401) and a test chamber (402). Flow guiding openings (403) are formed at the top of the adjacent sides of the main chamber (401) and the test chamber (402). A flow guiding plate (404) is fixedly assembled at the flow guiding opening (403). A top fixing frame (405) is fixedly assembled on the inner wall at the top of the main chamber (401). A top support plate (406) is fixedly assembled on the top of the top fixing frame (405).

5. The pressure resistance test platform applicable to multi-model mine hydraulic cylinders according to claim 4, characterized in that: The hydraulic cylinder (7) is placed on the inner wall of the test chamber (402). The main chamber (401) and the test chamber (402) are connected through the flow guiding plate (404), and the flow guiding plate (404) is inclined towards the main chamber (401). The filter pumping station (5) is arranged on the outer wall of one side of the main chamber (401). The input port of the filter pumping station (5) is communicated with the main chamber (401). The output port of the filter pumping station (5) is communicated with the test chamber (402).

6. The pressure resistance test platform applicable to multi-model mine hydraulic cylinders according to claim 1, characterized in that: The described connecting pipeline system (6) includes a connector (601). On both sides of the connector (601), side through-holes (602) are provided. In the middle of the connector (601), a middle limiting groove (603) is provided. A telescopic mechanism (604) is fixedly assembled on the inner wall of the side through-hole (602). The top telescopic end of the telescopic mechanism (604) is fixedly assembled with a push ring (605). A number of pressing ring plates (606) are fixedly assembled annularly at the bottom of the push ring (605). A ball (607) is embedded on one side of the pressing ring plate (606) close to the axis of the middle limiting groove (603). The top of the connector (601) is fixedly assembled with a cover plate (608) by screws. A sliding groove (609) and a fixing hole (610) are respectively provided annularly at the top of the cover plate (608). A fixing ring plate (611) is fixedly assembled annularly at the bottom of the cover plate (608). A sealing sleeve (612) is provided on the inner wall of the middle limiting groove (603).

7. The pressure resistance test platform applicable to multi-model mining hydraulic cylinders according to claim 6, characterized in that: The positions of the fixing ring plate (611) and the pressing ring plates (606) correspond to each other. A number of the pressing ring plates (606) are sleeved outside a number of the fixing ring plates (611). The sealing sleeve (612) is located inside the inner walls of a number of the fixing ring plates (611). The pressing ring plates (606) are slidably sleeved on the inner wall of the sliding groove (609). A number of the pressing ring plates (606), the fixing ring plates (611) and the middle limiting groove (603) are located on the same axis; the thickness of the fixing ring plate (611) on the side away from the cover plate (608) is greater than the thickness of the fixing ring plate (611) on the side close to the cover plate (608).

8. The pressure resistance test platform applicable to multi - model mining hydraulic cylinders according to claim 1, wherein: The hydraulic cylinder (7) includes a cylinder block (701). A hydraulic interface (703) is slidably sleeved in the inner cavity of the cylinder block (701). A piston rod (702) is fixedly assembled on the outer walls on both sides of the cylinder block (701).

9. The pressure resistance test platform applicable to multi-model mine hydraulic cylinders according to claim 1, characterized in that: The control panel (3) includes a display module, an input module, a processor module, a data storage module, and a communication interface; the display module is fixedly assembled on the outer surface of the control panel (3) and is used for real-time display of test parameters, including the upper cavity pressure test time, the upper cavity pressure reaching time, the upper cavity end time, the upper cavity maximum pressure, the lower cavity pressure test time, the lower cavity pressure reaching time, the lower cavity end time, the lower cavity maximum pressure, and the test status prompt; the input module is arranged on the outer surface of the control panel (3) and includes manual input buttons and a touch screen, and is used for inputting test pressure parameters, selecting a test mode, and triggering a test instruction; the processor module is electrically connected to the display module, the input module, the data storage module, and the communication interface, and the processor module is respectively electrically connected to the hydraulic control system (2) and the connecting pipeline system (6), and is used for processing the input test parameters, controlling the liquid supply and pressurization process of the hydraulic oil, and monitoring the pressure change during the test process; the data storage module is used for recording test data, including the test date, the pressure holding time, the product name, the product specification, the product number, and the pressure test personnel information; the communication interface is arranged on the side of the control panel (3) and is used for exporting test data through an external storage device or connecting to an external monitoring system; wherein, the control panel (3) realizes the coordinated control of the hydraulic control system (2) and the connecting pipeline system (6) through the processor module, supports the switching between the manual mode and the automatic mode, and prompts the pressure zero state through the display module after the test is completed.

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