Supporting structure of hydraulic support

Abstract

The invention relates to the technical field of coal mine underground supporting equipment, and discloses a hydraulic support supporting structure which comprises an outer sleeve, trapezoidal threads are in threaded connection with the interior of the outer sleeve, a middle piston rod is fixedly connected with the inner wall of the trapezoidal threads, and the outer wall of the middle piston rod is arranged on the inner wall of the outer sleeve. A connecting block is fixedly connected to the lower surface of the outer sleeve, a stabilizing assembly is arranged on the outer wall of the connecting block, a sealing ring is arranged on the inner wall of the outer sleeve, the inner wall of the sealing ring makes contact with the outer wall of the trapezoidal thread, and an inner piston rod is slidably connected to the inner wall of the middle piston rod. The inner piston rod is pushed to move upwards through high-pressure oil, then the middle piston rod is driven to move upwards, when the middle piston rod moves upwards, the trapezoidal threads between the middle piston rod and the outer sleeve rotate and ascend, after bearing is conducted, the trapezoidal threads can provide self-locking force, axial sliding of the piston rods is avoided, and therefore the bearing capacity and compressive strength of the stand column are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of underground support equipment in coal mines, and specifically relates to a hydraulic support structure. Background Art

[0002] With the continuous development of China's coal industry, the requirements for mine safety and production efficiency are increasing day by day. As one of the key equipment in the fully mechanized coal mining face, the performance of hydraulic supports directly affects the safety and efficiency of coal mining work. In recent years, in response to the high-efficiency support requirements under different geological conditions, research institutions and enterprises at home and abroad have continuously introduced new hydraulic support designs, especially in exploring and practicing a lot in improving the stability, bearing capacity and adaptability of supports, which has promoted the overall progress of the technical level of hydraulic supports. Traditional columns mostly adopt single-cylinder or three-stage telescopic structures, and during operation, the load-bearing of the columns is directly supported by the input pressure of high-pressure hydraulic oil.

[0003] At present, by directly pushing the piston rod to move through high-pressure hydraulic oil, it is difficult to control the speed of the piston rod, which limits the bearing capacity of the column, and due to the linear bearing capacity, it causes the problem of axial movement of the piston rod. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a hydraulic support structure, which solves the problems of difficult control of the piston rod speed, limited bearing capacity of the column, and axial movement of the piston rod.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A hydraulic support structure includes an outer sleeve, a trapezoidal thread is threadedly connected inside the outer sleeve, an intermediate piston rod is fixedly connected to the inner wall of the trapezoidal thread, the outer wall of the intermediate piston rod is arranged on the inner wall of the outer sleeve, a connecting block is fixedly connected to the lower surface of the outer sleeve, a stabilizing component is arranged on the outer wall of the connecting block, a sealing ring is arranged on the inner wall of the outer sleeve, the inner wall of the sealing ring is in contact with the outer wall of the trapezoidal thread, an inner piston rod is slidably connected to the inner wall of the intermediate piston rod, a guiding block is fixedly connected to the outer wall of the inner piston rod, the outer wall of the guiding block is slidably connected to the inner wall of the intermediate piston rod, a piston rod end is fixedly connected to the top of the inner piston rod, a pressure sensor is arranged at the bottom of the guiding block, and a telescopic control component is arranged on the inner wall of the outer sleeve.

[0006] Preferably, the telescopic control component includes an oil inlet, the outer wall of the oil inlet is arranged inside the outer sleeve, the oil inlet injects high-pressure hydraulic oil into the outer sleeve through a pump station, a pressure relief port is arranged inside the outer sleeve, and the pressure relief port is used to release the pressure inside the outer sleeve.

[0007] Preferably, the stabilizing component includes a mounting seat disposed on the outer wall of the connecting block, and a limiting frame is fixedly connected to the lower surface of the mounting seat.

[0008] Preferably, a moving block is slidably connected to the inner wall of the limiting frame, a sliding column is fixedly connected to the inner wall of the limiting frame, and the inner part of the moving block is slidably connected to the outer wall of the sliding column.

[0009] Preferably, a spring is fixedly connected to the outer wall of the moving block, the outer wall of the spring is fixedly connected to the inner wall of the limiting frame, and the inner wall of the spring is slidably connected to the outer wall of the sliding column.

[0010] Preferably, a linkage plate is rotatably connected to the inner wall of the moving block, a floating plate is rotatably connected to the outer wall of the linkage plate, and a leg is fixedly connected to the lower surface of the floating plate.

[0011] Preferably, a positioning column is fixedly connected to the lower surface of the mounting seat, a rolling ball is fixedly connected to the bottom end of the positioning column, and the outer wall of the rolling ball is rotatably connected to the inside of the floating plate.

[0012] A control system for a hydraulic support support structure, comprising: A data acquisition module for real-time collecting internal oil pressure data through a pressure sensor, controlling the oil supply and discharge amounts of a pump station to a double-extension column through a solenoid valve, and synchronously recording multi-dimensional operation data of the telescopic displacement; A multi-dimensional data analysis module for transmitting the collected operation data and historical operation data to a neural network learning model for learning and analysis, and outputting potential faults and predicted operation states of the double-extension column; An oil supply amount adjustment module for adjusting the opening degree and opening time between an oil inlet and a pressure relief port according to a prediction result to real-time control the oil supply and release amounts of the pump station to the double-extension column; A fault warning and diagnosis module, based on the analysis result of multi-dimensional data, comparing with the state data in a normal operation period, sending a fault warning signal when there is an abnormal fluctuation or deviation from the normal range, and positioning the fault source through a fault diagnosis algorithm.

[0013] Preferably, the data acquisition module synchronizes the multi-dimensional data of the operation state of the double-extension column by adding time stamps.

[0014] Preferably, in the fault warning and diagnosis module, statistical analysis methods are used to calculate the mean value and standard deviation statistics of the data to determine whether the data is within the normal range.

[0015] The present invention provides a hydraulic support support structure. It has the following beneficial effects: 1. In the present invention, high-pressure hydraulic oil is used to push the internal piston rod upward, thereby driving the middle piston rod to move upward. When the middle piston rod moves upward, it rotates and rises along the trapezoidal thread between it and the external sleeve. After bearing the load, the trapezoidal thread can provide a self-locking force to prevent the axial sliding of the piston rod, thus enhancing the load-bearing capacity and compressive strength of the column.

[0016] 2. In the present invention, when the leg fixed to the floating plate contacts the inclined ground, the linkage plate drives the moving block to slide on the inner wall of the mounting seat to adapt to the inclination angle of the floating plate, and then the positioning column drives the rolling ball to further adapt to the inclination angle of the floating plate, thereby enhancing the stability of the column in complex terrains, ensuring the safe operation of the equipment, and extending the service life of the equipment.

[0017] 3. The present invention inputs the real-time operation data and historical data into a neural network learning model for in-depth learning and analysis, and outputs the potential faults and predicted operation states of the double-extension column, thereby discovering potential fault hazards in advance and taking preventive measures, greatly improving the reliability and safety of the system, and reducing the downtime and maintenance costs caused by sudden failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional view of a hydraulic support support structure of the present invention; Figure 2 is a partial structural schematic diagram of a connecting block of a hydraulic support support structure of the present invention; Figure 3 is a partial structural schematic diagram of a guide block of a hydraulic support support structure of the present invention; Figure 4 is a partial structural schematic diagram of a floating plate of a hydraulic support support structure of the present invention; Figure 5 is a partial structural schematic diagram of a linkage plate of a hydraulic support support structure of the present invention; Figure 6 is an architecture diagram of a control system of a hydraulic support support structure of the present invention.

[0019] Among them, 1. External sleeve; 2. Trapezoidal thread; 3. Middle piston rod; 4. Sealing ring; 5. Internal piston rod; 6. Guide block; 7. Piston rod end; 8. Pressure sensor; 9. Oil inlet; 10. Pressure relief port; 11. Connecting block; 12. Mounting seat; 13. Limit frame; 14. Moving block; 15. Slide column; 16. Spring; 17. Linkage plate; 18. Floating plate; 19. Leg; 20. Positioning column; 21. Rolling ball. DETAILED DESCRIPTION OF THE INVENTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to the attached Figure 1 -attached Figure 3 , an embodiment of the present invention provides a hydraulic support structure, including an outer sleeve 1, a trapezoidal thread 2 is threadedly connected inside the outer sleeve 1, an intermediate piston rod 3 is fixedly connected to the inner wall of the trapezoidal thread 2, the outer wall of the intermediate piston rod 3 is arranged on the inner wall of the outer sleeve 1, a connecting block 11 is fixedly connected to the lower surface of the outer sleeve 1, a stabilizing component is arranged on the outer wall of the connecting block 11, a sealing ring 4 is arranged on the inner wall of the outer sleeve 1, and the inner wall of the sealing ring 4 is in contact with the outer wall of the trapezoidal thread 2. An inner piston rod 5 is slidably connected to the inner wall of the intermediate piston rod 3, a guiding block 6 is fixedly connected to the outer wall of the inner piston rod 5, the outer wall of the guiding block 6 is slidably connected to the inner wall of the intermediate piston rod 3, a piston rod end 7 is fixedly connected to the top end of the inner piston rod 5, a pressure sensor 8 is arranged at the bottom end of the guiding block 6, and a telescopic control component is arranged on the inner wall of the outer sleeve 1.

[0022] Specifically, when the pump station injects high-pressure hydraulic oil into the inner part of the outer sleeve 1 through the oil inlet 9, the high-pressure hydraulic oil is guided by the position of the guiding block 6 to push the inner piston rod 5 upward, so as to drive the intermediate piston rod 3 to move upward through the inner piston rod 5, thereby increasing the effective stroke of the column, enabling the hydraulic support to exert its effectiveness under more extensive conditions, especially suitable for the mine environment with large mining height. At the same time, when the intermediate piston rod 3 moves upward, it rotates through the reverse force generated by the thread between the trapezoidal thread 2 and the outer sleeve 1, and the sealing ring 4 is used to ensure the sealing between the outer sleeve 1 and the intermediate piston rod 3. Then, the heavy object is supported by the piston rod end 7. At this time, under the pressure of the high-pressure hydraulic oil, the thread of the trapezoidal thread 2 can further provide a self-locking force, thereby improving the load-bearing capacity and compressive strength of the column.

[0023] Refer to the attached Figure 2 , the telescopic control component includes an oil inlet 9, the outer wall of the oil inlet 9 is arranged inside the outer sleeve 1, the oil inlet 9 injects high-pressure hydraulic oil into the inner part of the outer sleeve 1 through the pump station, a pressure relief port 10 is arranged inside the outer sleeve 1, and the pressure relief port 10 is used to release the pressure inside the outer sleeve 1.

[0024] Specifically, in the telescopic control component, the oil inlet 9 and the pressure relief port 10 cooperate with each other to effectively achieve precise telescopic control and overload protection of the double telescopic column. When the column needs to extend, the pump station injects high-pressure oil into the outer sleeve 1 through the oil inlet 9, pushing the inner piston rod 5 and the middle piston rod 3 to extend outwards, so that the column completes the support action. When the column needs to retract or the system pressure is too high, the pressure relief port 10 opens to release the pressure in the outer sleeve 1, prompting the column to retract and reset, and preventing damage to the internal components due to excessive system pressure, ensuring the stability and safety of the entire hydraulic support system operation.

[0025] Refer to the appendix Figure 2 , appendix Figure 4 and appendix Figure 5 , the stabilizing component includes a mounting seat 12, the mounting seat 12 is arranged on the outer wall of the connecting block 11, and a limiting frame 13 is fixedly connected to the lower surface of the mounting seat 12; a moving block 14 is slidably connected to the inner wall of the limiting frame 13, a sliding column 15 is fixedly connected to the inner wall of the limiting frame 13, and the inner part of the moving block 14 is slidably connected to the outer wall of the sliding column 15.

[0026] Specifically, the mounting seat 12 has a fixed supporting effect on the limiting frame 13, while the outer sleeve 1 has a fixing effect on the connecting block 11. The column can be installed on the inner wall of the mounting seat 12 through the connecting block 11. The limiting frame 13 can support the sliding position of the moving block 14, and the limiting frame 13 has a fixed supporting effect on the sliding column 15. The sliding column 15 can ensure the sliding space of the moving block 14.

[0027] Refer to the appendix Figure 5 , a spring 16 is fixedly connected to the outer wall of the moving block 14, the outer wall of the spring 16 is fixedly connected to the inner wall of the limiting frame 13, and the inner wall of the spring 16 is slidably connected to the outer wall of the sliding column 15; a linkage plate 17 is rotatably connected to the inner part of the moving block 14, a floating plate 18 is rotatably connected to the outer wall of the linkage plate 17, and a leg 19 is fixedly connected to the lower surface of the floating plate 18.

[0028] Specifically, the moving block 14 has a fixed supporting effect on the spring 16. The spring 16 can provide buffering for the moving block 14 during movement through the limiting frame 13. The moving block 14 can support the rotating position of the linkage plate 17. Thus, when the leg 19 fixed to the floating plate 18 contacts the inclined ground, the linkage plate 17 can drive the moving blocks 14 at both ends to slide on the inner wall of the mounting seat 12, thereby adapting to the inclination angle of the floating plate 18.

[0029] Refer to the appendix Figure 4 , a positioning column 20 is fixedly connected to the lower surface of the mounting seat 12, a rolling ball 21 is fixedly connected to the bottom end of the positioning column 20, and the outer wall of the rolling ball 21 is rotatably connected to the inside of the floating plate 18.

[0030] Specifically, the mounting base 12 has a function of fixedly supporting the positioning column 20, and the positioning column 20 can fix the position of the rolling ball 21. When the floating plate 18 is tilted, it can drive the floating plate 18 to rotate on the outer wall of the rolling ball 21, so as to realize the floating and fitting with the ground, enhance the stability of the column in complex terrains, effectively prevent the equipment from tilting and shaking, ensure the safe operation of the equipment, reduce the stress concentration on the equipment caused by the uneven ground, and extend the service life of the equipment.

[0031] See the appendix Figure 6 , a support structure control system for a hydraulic support, comprising: A data acquisition module, configured to collect internal oil pressure data in real time through a pressure sensor 8, control the oil supply and discharge amounts of a pump station to a double-acting telescopic prop through a solenoid valve, and synchronously record multi-dimensional operation data of the telescopic displacement; A multi-dimensional data analysis module, which transmits the collected operation data and historical operation data to a neural network learning model for learning and analysis, and outputs potential faults and predicted operation states of the double-acting telescopic prop; An oil supply amount adjustment module, configured to adjust the opening degree and opening time between an oil inlet 9 and a pressure relief port 10 according to the prediction result, so as to control the oil supply and release amounts of the pump station to the double-acting telescopic prop in real time; A fault warning and diagnosis module, based on the analysis result of multi-dimensional data, compares it with the state data in the normal operation period, and when abnormal fluctuations or deviations from the normal range occur, issues a fault warning signal and locates the fault source through a fault diagnosis algorithm.

[0032] Specifically, the data acquisition module obtains the internal oil pressure data of the double-acting telescopic prop in real time through the pressure sensor 8, and at the same time, through the control of the solenoid valve, obtains the oil supply and discharge amounts of the pump station to the double-acting telescopic prop, and synchronously records multi-dimensional operation data such as telescopic displacement, providing a comprehensive, accurate and timely data basis, and ensuring the stability and effectiveness of the information source for the system operation; The multi-dimensional data analysis module transmits the collected real-time operation data and historical operation data to the neural network learning model for in-depth learning and analysis. Through the powerful learning ability of the neural network, it excavates the laws and potential problems behind the data, outputs potential faults and predicted operation states of the double-acting telescopic prop, converts the massive data into valuable decision-making information, discovers potential fault hazards that may occur in advance, provides a forward-looking guarantee for the stable operation of the system, thereby improving the reliability and safety of the prop operation, and reducing the downtime and maintenance costs caused by sudden failures; Based on the prediction results given by the multi-dimensional data analysis module, the fuel supply adjustment module precisely adjusts the opening degree and opening time between the fuel inlet 9 and the pressure relief port 10, thereby controlling the fuel supply amount and release amount from the pump station to the double-acting telescopic prop in real-time and accurately, ensuring that the double-acting telescopic prop can obtain appropriate fuel supply under different working conditions to achieve the best working state, making the telescopic action of the double-acting telescopic prop smoother and more efficient, and improving the working performance and efficiency of the equipment; Based on the analysis results of multi-dimensional data, the fault warning and diagnosis module compares the current operating state with the state data during the normal operating period to identify fault signals and give warnings, and locates the fault source through fault diagnosis algorithms, providing accurate fault location information for maintenance personnel so that they can quickly take maintenance measures, thereby reducing the damage caused by faults to the prop, shortening the maintenance time, and improving the overall availability and reliability of the system.

[0033] The data acquisition module synchronizes the multi-dimensional data of the operating state of the double-acting telescopic prop by adding timestamps.

[0034] Specifically, adding timestamps to synchronize the multi-dimensional data of the operating state of the double-acting telescopic prop provides a unified time reference for data such as oil pressure and displacement collected by different sensors, constructs the internal connection between the data, and greatly guarantees the data accuracy.

[0035] In the fault warning and diagnosis module, statistical analysis methods are used to calculate the mean and standard deviation statistics of the data to determine whether the data is within the normal range.

[0036] Specifically, the fault warning and diagnosis module calculates the mean and standard deviation of the data through statistical formulas. Based on the mean, a normal data fluctuation range is set in combination with the standard deviation, and the real-time collected data is compared with it. Once it exceeds this range, the warning mechanism is triggered. At the same time, through continuous analysis of historical data, the judgment criteria are dynamically adjusted to improve the adaptability of the system to different working conditions, ensure the stable operation of the prop, and reduce the operation and maintenance costs and production risks.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood 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 hydraulic support structure, comprising an outer sleeve (1), characterized in that: The internal thread of the outer sleeve (1) is connected to a trapezoidal thread (2), the inner wall of the trapezoidal thread (2) is fixedly connected to an intermediate piston rod (3), the outer wall of the intermediate piston rod (3) is arranged on the inner wall of the outer sleeve (1), the lower surface of the outer sleeve (1) is fixedly connected to a connecting block (11), the outer wall of the connecting block (11) is provided with a stabilizing component, the inner wall of the outer sleeve (1) is provided with a sealing ring (4), the inner wall of the sealing ring (4) is in contact with the outer wall of the trapezoidal thread (2), the inner wall of the intermediate piston rod (3) is slidably connected to an internal piston rod (5), the outer wall of the internal piston rod (5) is fixedly connected to a guide block (6), the outer wall of the guide block (6) is slidably connected to the inner wall of the intermediate piston rod (3), the top end of the internal piston rod (5) is fixedly connected to a piston rod end (7), the bottom end of the guide block (6) is provided with a pressure sensor (8), and the inner wall of the outer sleeve (1) is provided with a telescopic control component.

2. A hydraulic support structure according to claim 1, characterized in that: The telescopic control assembly comprises an oil inlet (9), the outer wall of which is arranged inside the outer sleeve (1), and the oil inlet (9) injects high-pressure oil into the outer sleeve (1) through a pump station. The outer sleeve (1) is provided with a pressure relief port (10), and the pressure relief port (10) is used to release the internal pressure of the outer sleeve (1).

3. A hydraulic support structure according to claim 1, characterized in that: The stabilizing component comprises a mounting seat (12), the mounting seat (12) being arranged on the outer wall of the connecting block (11), and the lower surface of the mounting seat (12) being fixedly connected to a limiting frame (13).

4. A hydraulic support structure according to claim 3, characterized in that: The inner wall of the limiting frame (13) is slidably connected to a moving block (14), the inner wall of the limiting frame (13) is fixedly connected to a sliding column (15), and the interior of the moving block (14) is slidably connected to the outer wall of the sliding column (15).

5. A hydraulic support structure according to claim 4, characterized in that: The outer wall of the moving block (14) is fixedly connected to a spring (16), the outer wall of the spring (16) is fixedly connected to the inner wall of the limiting frame (13), and the inner wall of the spring (16) is slidably connected to the outer wall of the sliding column (15).

6. A hydraulic support structure according to claim 5, characterized in that: The inner wall of the moving block (14) is rotatably provided with a linkage plate (17), the outer wall of the linkage plate (17) is rotatably connected with a floating plate (18), and the lower surface of the floating plate (18) is fixedly connected with a support leg (19).

7. A hydraulic support structure according to claim 6, characterized in that: A positioning column (20) is fixedly connected to the lower surface of the mounting seat (12), a rolling ball (21) is fixedly connected to the bottom end of the positioning column (20), and an outer wall of the rolling ball (21) is rotatably connected to the inside of the floating plate (18).

8. A hydraulic support structure control system, characterized in that: A hydraulic support support structure for use in any one of claims 1 to 7, comprising: A data acquisition module, used to collect internal oil pressure data in real time through a pressure sensor (8), and to control the oil supply and discharge of the pump station to the double telescopic columns through a solenoid valve, and to simultaneously record multi-dimensional operation data of the telescopic displacement; The multi-dimensional data analysis module transmits the collected operation data and historical operation data to the neural network learning model for learning and analysis, and outputs the potential failures and predicted operation status of the double telescopic column; An oil supply amount adjustment module is used to adjust the opening degree and opening time between the oil inlet (9) and the pressure relief port (10) according to the prediction results, so as to control the oil supply and release amount of the pump station to the double telescopic columns in real time; The fault warning and diagnosis module compares the analysis results of multi-dimensional data with the status data of the normal operating time period. When abnormal fluctuations or deviations from the normal range occur, a fault warning signal is issued and the fault source is located through the fault diagnosis algorithm.

9. A hydraulic support structure control system according to claim 8, characterized in that: The data acquisition module synchronizes the multi-dimensional data of the operating status of the double telescopic columns by adding a timestamp.

10. A hydraulic support structure control system according to claim 8, characterized in that: The fault warning and diagnosis module uses statistical analysis methods to calculate the mean and standard deviation statistics of the data to determine whether the data is within a normal range.

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