Intelligent pressing device and method for mine hydraulic suspension prop

Abstract

The application discloses an intelligent pressing device and method for a mine hydraulic suspension prop, relates to the technical field of pressing devices, and comprises a fixing frame, a plurality of fixing cylinders are fixedly connected to the bottom of the fixing frame, a pressure sensor corresponding to each fixing cylinder is fixedly connected to the top of the fixing frame, a plurality of pressure gauges for displaying pressure are arranged on the top of the fixing frame, and the trigger member is triggered when the prop is blocked during the extension and retraction of the prop, so that the pushing member pushes the lubricating member to lubricate and spray the extension and retraction position of the prop, the extension and retraction end of the prop is in contact with the pressure sensor, the pressure borne by the prop is observed through the pressure gauge, the extension and retraction condition of the prop during the pressing process is monitored, and the prop can normally extend and retract during the pressing process.

Description

Technical Field

[0001] This invention relates to the field of pressure testing equipment technology, and in particular to an intelligent pressure testing device and method for hydraulic suspension supports in mines. Background Technology

[0002] Mining single hydraulic props are externally supplied constant resistance single hydraulic props. They can be used with various roof beams or as main props. They can be used for roof support in blasting mining faces or for other temporary support purposes. The weight of a mining single hydraulic prop is typically around 50 kg. Single hydraulic props require pressure testing, which requires the use of a pressure testing device.

[0003] Referring to patent application CN214887137U, a single hydraulic prop pressure testing device for mines includes a test platform frame. The test platform frame consists of two top channel steels, two first connecting horizontal steels, two bottom channel steels, and multiple second connecting horizontal steels. The two first connecting horizontal steels are welded between opposite ends of the two top channel steels. The multiple second connecting horizontal steels are welded at equal intervals between opposite ends of the two bottom channel steels. Equally spaced connecting vertical steels are welded between the bottom of the top channel steels and the top of the bottom channel steels, and the total number of connecting vertical steels is twice that of the second connecting horizontal steels. This invention allows for observation of whether the single prop leaks, whether the pressure gauge value changes, and whether the single prop has passed inspection. It has a simple structure, low maintenance costs, simplifies the operation steps of the single prop pressure test bench, increases the number of single props that can be tested each time, and solves the shortcomings of the existing SF-II type valve prop test bench.

[0004] The pressure testing process described above is a simple pressure test. However, during the pressure test, the friction between the plunger and the cylinder is prone to mechanical jamming due to impurities or insufficient lubrication. Most existing lubrication systems are timed injection systems, which cannot respond to real-time working conditions and cannot guarantee the normal pressure testing operation of the support column.

[0005] Therefore, it is necessary to provide an intelligent pressure-pressurizing device and method for hydraulic suspension supports in mines to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide an intelligent pressure device and method for hydraulic suspension supports in mines, so as to solve the problems of the prior art mentioned in the background.

[0007] Based on the above ideas, the present invention provides the following technical solution: an intelligent pressure testing device for hydraulic suspension supports in mines, comprising a fixed frame, wherein multiple fixed cylinders are fixedly connected to the bottom of the fixed frame, and pressure sensors corresponding one-to-one with the multiple fixed cylinders are fixedly connected to the top of the fixed frame, and multiple pressure gauges for displaying pressure are provided on the top of the fixed frame, and further comprising:

[0008] Multiple support rings are respectively located below multiple pressure sensors, and a lifting component for lifting is provided between the support rings and the fixed frame;

[0009] Each of the multiple support rings has a fixed ring fixedly connected to its top, and a rotating ring is rotatably connected to the inside of the fixed ring. The fixed ring has multiple placement slots inside, and a lubrication component is installed inside the placement slots. The rotating ring has multiple through slots inside, and a pusher is installed inside the through slots to push the lubrication component for spray lubrication.

[0010] The inner side of the rotating ring is provided with multiple movable plates, and a triggering element is provided between the multiple movable plates and the pusher for blocking the extension and retraction of the support column, which is driven by triggering the pusher.

[0011] Each of the multiple fixed cylinders is equipped with a clamping component for positioning the support column.

[0012] As a further embodiment of the present invention: a gear ring is fixedly connected to the top of the rotating ring, a transmission gear is meshed with the outer side of the gear ring, a storage frame is fixedly connected to the top of the fixed ring, a drive motor is fixedly connected to the top of the storage frame, and the output shaft of the drive motor is fixedly connected to the transmission gear.

[0013] As a further embodiment of the present invention: the lubrication assembly includes a squeezing plate, which is disposed inside the placement groove and slidably connected to a fixing ring. A folding bladder is fixedly connected between the squeezing plate and the fixing ring. A fourth spring is sleeved on the outside of the folding bladder. A magnet is fixedly connected to the side of the squeezing plate away from the folding bladder. A spray pipe is fixedly connected to one end of the folding bladder. A spray nozzle for spraying is fixedly connected to one end of the spray pipe. An inlet pipe is fixedly connected between the folding bladder and the storage frame.

[0014] As a further aspect of the present invention: the pushing member includes a contact plate, which is disposed inside the through groove and fixedly connected to the rotating ring. A first electromagnet is fixedly connected to the side of the contact plate near the extrusion plate. When the first electromagnet is energized, it repels the magnet magnetically.

[0015] As a further aspect of the present invention: the trigger includes a fixing plate, which is disposed inside the through groove and fixed to the rotating ring. An installation cylinder is slidably connected inside the fixing plate. A baffle is fixedly connected to the side of the installation cylinder near the contact plate. A fifth spring is fixedly connected between the baffle and the contact plate. The installation cylinder is provided with a sliding rod, which passes through one end of the installation cylinder and is slidably connected to the installation cylinder. A memory metal component is fixedly connected between the sliding rod and the moving plate. The memory metal component extends when heated. An energizing post is fixedly connected to the side of the installation cylinder near the contact plate. When the energizing post contacts the contact plate, the first electromagnet is energized.

[0016] As a further aspect of the present invention: the trigger further includes a sliding plate, which is fixedly connected to one end of the sliding rod and slidably connected inside the mounting cylinder. An electric push rod is fixedly connected to one side of the fixed plate, and the telescopic end of the electric push rod is fixedly connected to the moving plate. A storage cylinder is fixedly connected to the top of the fixed ring, and a connecting pipe is fixedly connected between the storage cylinder and the mounting cylinder. A control valve is provided on the outside of the connecting pipe.

[0017] As a further aspect of the present invention: a noise sensor is fixedly connected to one side of the movable plate, and a micro battery is fixedly connected to one side of the fixed plate. When the noise sensor detects noise, the micro battery is turned on and supplies power to the power column.

[0018] As a further aspect of the present invention: a mounting metal frame is fixedly connected to one side of the movable plate, a sliding block is slidably connected inside the buzzer, a contact rod is fixedly connected to the bottom of the sliding block, the contact rod passes through the movable plate and contacts the extension end of the support column, a second electromagnet plate is provided on both sides of the sliding block, the second electromagnet plate is slidably connected to the outside of the mounting metal frame, and magnetically attracted to the mounting metal frame after being energized, and a tactile switch is fixedly connected to one side of each of the two second electromagnet plates, a first spring is provided between the second electromagnet plate and the sliding block, and a sixth spring is fixedly connected between one of the second electromagnet plates and one end of the mounting metal frame, a buzzer is fixedly connected to the top of the movable plate, the buzzer is electrically connected to the tactile switch, and the buzzer produces a buzzing sound when the sliding block contacts the tactile switch.

[0019] As a further embodiment of the present invention: the clamping assembly includes a support plate disposed inside the fixed cylinder, and a second telescopic rod and a second spring are fixedly connected between the support plate and the fixed frame. Multiple clamping frames are disposed on the outside of the fixed cylinder, and a third telescopic rod and a third spring are fixedly connected between the clamping frames and the fixed cylinder. Multiple connecting plates are fixedly connected to the bottom of the support plate, and a guide plate is fixedly connected to the top of the connecting plate. A guide groove is opened on the outside of the guide plate. A connecting shaft is fixedly connected to the outside of the clamping frame. The connecting shaft extends into the guide groove and is slidably connected to the guide groove. An arc-shaped plate is disposed at one end of the clamping frame, and a threaded rod is rotatably connected to one side of the arc-shaped plate. The threaded rod passes through the clamping frame and is threadedly connected to the clamping frame. A telescopic rod is fixedly connected between the clamping frame and the arc-shaped plate.

[0020] A method for intelligent pressure testing of hydraulic suspension supports in mines includes the following steps:

[0021] Step 1: Use external hoisting equipment to hoist the bottom of the support column into the fixed cylinder, and use clamping components to clamp and fix the support column.

[0022] Step 2: The lifting component drives the support ring to descend, so that the support ring is fitted at the telescopic end of the support column, and hydraulic pressure is delivered to the support column through an external injection device.

[0023] Step 3: During the extension and retraction of the support column, if blockage occurs, the trigger will be activated, which will then cause the pusher to push the lubricant to spray lubrication onto the extension and retraction points of the support column. The extension and retraction ends of the support column will then contact the pressure sensor, and the pressure on the support column will be observed through the pressure gauge.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. Hydraulic pressure is supplied to the support column. If blockage occurs during the column's extension and retraction, the trigger is activated, which in turn causes the pusher to drive the lubricant to spray lubrication onto the extension and retraction points of the column. The extension and retraction ends of the column contact the pressure sensor, and the pressure gauge is used to observe the pressure the column is under. This ensures that the extension and retraction of the column is monitored during the pressurization process, guaranteeing that the column can extend and retract normally during the pressurization process.

[0026] 2. The magnet pushes the extrusion plate to move, and the extrusion plate compresses the folding bladder. The lubricating fluid inside the folding bladder is sprayed out through the nozzle on the spray pipe, thereby lubricating the connection between the plunger of the support and the cylinder, thus preventing jamming and ensuring the normal extension and contraction of the support. When the rotating ring continues to rotate, the fourth spring pushes the extrusion plate to reset, and the lubricating fluid inside the storage box is replenished through the inlet pipe. One-way valves are installed on the outside of the inlet pipe and the outside of the spray pipe, thereby achieving the effect of automatic lubrication.

[0027] 3. The pushing distance of the shape memory metal part when heated: When the support column is pressurized and overheated, the shape memory metal part is heated and reset to push the sliding rod. Since there is liquid inside the sliding plate and the mounting cylinder, the entire mounting cylinder is pushed to move towards the contact plate. Then the energized column on the side of the baffle will contact the contact plate, thereby energizing the first electromagnet. By monitoring the temperature of the support column during the pressurization process, damage to the support column caused by overheating can be avoided.

[0028] 4. Only when the energized column touches the contact plate will the first electromagnet be energized and generate magnetism, thereby driving the lubrication component to perform lubrication. A dual-condition triggering mechanism is established: oil injection is only started when the temperature is >55℃ and the noise frequency energy exceeds the standard. When both the temperature and noise signal exceed the threshold, injection is performed to avoid false triggering. This solution can effectively prevent column jamming failure through accurate perception of sound and temperature dual thresholds → dynamic pressure injection. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the fixed cylinder structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the clamping component structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the support ring structure of the present invention;

[0034] Figure 5 This is a schematic diagram of the fixed ring and support ring structure of the present invention;

[0035] Figure 6 This is a schematic diagram of the fixed ring and rotating ring structure of the present invention;

[0036] Figure 7 This is the present invention. Figure 6 A magnified structural diagram of part A;

[0037] Figure 8 This is a schematic diagram of the lubrication assembly structure of the present invention;

[0038] Figure 9 This is a schematic diagram of the trigger structure of the present invention;

[0039] Figure 10 This is a cross-sectional view of the mounting cylinder structure of the present invention;

[0040] Figure 11 This is a schematic diagram of the metal frame structure for mounting this invention.

[0041] In the diagram: 1. Fixed frame; 2. Fixed cylinder; 201. Support plate; 202. Second telescopic rod; 203. Second spring; 204. Connecting plate; 205. Guide plate; 2051. Guide groove; 2052. Connecting shaft; 206. Clamping frame; 2061. Arc plate; 2062. Threaded rod; 2063. Telescopic rod; 2064. Third telescopic rod; 2065. Third spring; 3. Pressure sensor; 301. Pressure gauge; 4. Support ring; 401. Lead screw; 402. Limiting rod; 403. Mounting plate; 5. Fixed ring; 501. Storage frame; 6. Rotating ring; 600. Gear ring; 601. Fixed plate; 602. Transmission gear; 701. 702. Contact plate; 8. First electromagnet; 9. Extrusion plate; 10. Magnet; 11. Folding bladder; 12. Fourth spring; 13. Spray pipe; 14. Inlet pipe; 15. Nozzle; 16. Moving plate; 17. Memory metal part; 18. Mounting cylinder; 19. Baffle; 10. Power column; 11. Sliding rod; 12. Sliding plate; 13. Sliding disc; 14. Storage cylinder; 15. Connecting pipe; 16. Fifth spring; 17. Electric push rod; 18. Miniature battery; 19. Buzzer; 10. Mounting metal frame; 11. Sliding block; 113. Contact rod; 114. Sixth spring; 115. Second electromagnet plate; 116. Tactile switch. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0043] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0044] like Figures 1 to 11 As shown, an intelligent pressure testing device and method for hydraulic suspension props in mines includes the following embodiments:

[0045] Example 1: Includes a fixed frame 1, with multiple fixed cylinders 2 fixedly connected to the bottom of the fixed frame 1, and pressure sensors 3 corresponding one-to-one with the multiple fixed cylinders 2 fixedly connected to the top of the fixed frame 1. Multiple pressure gauges 301 for displaying pressure are installed on the top of the fixed frame 1. Also includes:

[0046] Multiple support rings 4 are respectively located below multiple pressure sensors 3. A lifting component for lifting is provided between the support rings 4 and the fixed frame 1. The lifting component includes a mounting plate 403 and a lead screw 401. The mounting plate 403 is fixedly connected to the outside of the support rings 4. The lead screw 401 passes through the mounting plate 403 and is connected to the mounting plate 403 through a ball nut pair. The lead screw 401 also passes through the top of the fixed frame 1 and is rotatably connected to the fixed frame 1. A limit rod 402 is fixedly connected to the bottom of the fixed frame 1. The limit rod 402 passes through the mounting plate 403 and is slidably connected to the mounting plate 403.

[0047] Each of the multiple support rings 4 has a fixed ring 5 fixedly connected to its top. A rotating ring 6 is rotatably connected to the inside of the fixed ring 5. The fixed ring 5 has multiple placement slots inside, and a lubrication component is installed inside the placement slots. The rotating ring 6 has multiple through slots inside, and a pusher is installed inside the through slots to push the lubrication component for spray lubrication.

[0048] Multiple movable plates 9 are provided on the inner side of the rotating ring 6. A triggering element for blocking the extension and retraction of the support column is provided between the multiple movable plates 9 and the pusher, and the pusher is driven by triggering the pusher.

[0049] Each of the multiple fixed cylinders 2 is equipped with a clamping component for positioning the support column.

[0050] In practical implementation, if the support column experiences blockage or malfunction at its telescopic end during the pressurization process, and this cannot be detected in time, it will damage the support column. Therefore, in this solution, the bottom of the support column is hoisted into the fixed cylinder 2 using external hoisting equipment, and the support column is clamped and fixed using clamping components. The lifting component drives the support ring 4 to descend, so that the support ring 4 is fitted at the telescopic end of the support column. Hydraulic pressure is delivered to the support column through external pressurization equipment. If the support column experiences blockage during telescopic movement, the triggering component is activated, which in turn drives the lubricating component to spray lubrication onto the telescopic part of the support column. The telescopic end of the support column contacts the pressure sensor 3, and the pressure gauge 301 is used to observe the pressure borne by the support column, ensuring that the telescopic movement of the support column is monitored during the pressurization process and that the support column can telescopically move normally during the pressurization process.

[0051] Example 2: A gear ring 600 is fixedly connected to the top of the rotating ring 6, and a transmission gear 602 is meshed with the outer side of the gear ring 600. A storage frame 501 is fixedly connected to the top of the fixed ring 5, and a drive motor is fixedly connected to the top of the storage frame 501. The output shaft of the drive motor is fixedly connected to the transmission gear 602.

[0052] The lubrication assembly includes a squeezing plate 8, which is disposed inside the placement groove and slidably connected to a fixing ring 5. A folded bladder 802 is fixedly connected between the squeezing plate 8 and the fixing ring 5. A fourth spring 803 is sleeved on the outside of the folded bladder 802. A magnet 801 is fixedly connected to the side of the squeezing plate 8 away from the folded bladder 802. A spray pipe 804 is fixedly connected to one end of the folded bladder 802. A spray nozzle 806 for spraying is fixedly connected to one end of the spray pipe 804. An inlet pipe 805 is fixedly connected between the folded bladder 802 and the storage frame 501.

[0053] The pusher includes a contact plate 701, which is disposed inside the through groove and fixedly connected to the rotating ring 6. A first electromagnet 702 is fixedly connected to the side of the contact plate 701 near the extrusion plate 8. When the first electromagnet 702 is energized, it repels the magnet 801 magnetically.

[0054] In specific implementation, when the drive motor is started, the output shaft of the drive motor drives the transmission gear 602 to rotate, the transmission gear 602 drives the meshing gear ring 600 to rotate, and then the gear ring 600 drives the rotating ring 6 to rotate around the support column, ensuring that the trigger inside the rotating ring 6 continuously monitors the outside of the support column. When a situation occurs, the trigger drives the first electromagnet 702 in the pusher to be energized. After the first electromagnet 702 is energized, it repels the magnet 801 magnetically, and then the magnet 801 pushes the extrusion plate 8 to move. The extrusion plate 8 compresses the folded bladder 802, and the lubricating fluid inside the folded bladder 802 is sprayed out through the nozzle 806 on the spray pipe 804, thereby lubricating the connection between the piston and the cylinder of the support column, thus avoiding jamming and ensuring the normal extension and retraction of the support column. When the rotating ring 6 continues to rotate, the fourth spring 803 pushes the extrusion plate 8 to reset, and the lubricating fluid inside the storage frame 501 is replenished through the inlet pipe 805. One-way valves are installed on the outside of the inlet pipe 805 and the outside of the spray pipe 804, thereby achieving the effect of automatic lubrication.

[0055] Example 3: The triggering element includes a fixing plate 601, which is disposed inside the through groove and fixed to the rotating ring 6. A mounting cylinder 902 is slidably connected inside the fixing plate 601. A baffle 903 is fixedly connected to the side of the mounting cylinder 902 near the contact plate 701. A fifth spring 909 is fixedly connected between the baffle 903 and the contact plate 701. A sliding rod 905 is provided in the mounting cylinder 902. The sliding rod 905 passes through one end of the mounting cylinder 902 and is slidably connected to the mounting cylinder 902. A memory metal part 901 is fixedly connected between the sliding rod 905 and the moving plate 9. The memory metal part 901 extends after being heated. An energizing post 904 is fixedly connected to the side of the mounting cylinder 902 near the contact plate 701. After the energizing post 904 contacts the contact plate 701, the first electromagnet 702 is energized.

[0056] The trigger also includes a slide plate 906, which is fixedly connected to one end of the sliding rod 905 and slidably connected inside the mounting cylinder 902. An electric push rod 910 is fixedly connected to one side of the fixed plate 601. The telescopic end of the electric push rod 910 is fixedly connected to the moving plate 9. A storage cylinder 907 is fixedly connected to the top of the fixed ring 5. A connecting pipe 908 is fixedly connected between the storage cylinder 907 and the mounting cylinder 902, and a control valve is provided on the outside of the connecting pipe 908.

[0057] In practical implementation, when the support malfunctions, it will inevitably cause a temperature rise. Therefore, in this solution, when the support ring 4 moves to the connection between the plunger and the cylinder, the electric push rod 910 is activated. The electric push rod 910 pushes the moving plate 9 closer to the plunger. The moving plate 9 pulls the sliding rod 905 through the memory metal part 901. The sliding rod 905 slides inside the mounting cylinder 902 through the sliding plate 906. At this time, the control valve of the connecting pipe 908 is opened, and the liquid inside the storage cylinder 907 is injected into the sliding plate 906 and the mounting cylinder 902. Between the mounting cylinders 902, the push distance for the shape memory metal part 901 to expand when heated is ensured. When the support column is overheated under pressure, the shape memory metal part 901 is reset by heat and pushes the sliding rod 905. Since there is liquid inside the sliding plate 906 and the mounting cylinder 902, the mounting cylinder 902 is pushed to move as a whole towards the contact plate 701. Then, the energized column 904 on the side of the baffle 903 will contact the contact plate 701, thereby energizing the first electromagnet 702. By monitoring the temperature during the pressure process of the support column, damage to the support column caused by overheating is avoided.

[0058] It is worth noting that: Triggering phase

[0059] When the support ring 4 moves to the piston-cylinder connection, the electric push rod 910 pushes the moving plate 9 close to the heat source, and the shape memory metal part 901 initially stretches due to heat.

[0060] The sliding rod 905 compresses the liquid in the mounting cylinder 902 via the sliding plate 906, and the connecting pipe 908 controls the valve to open, allowing the coolant in the storage cylinder 907 to be injected into the buffer chamber.

[0061] Thermal response phase

[0062] When the temperature exceeds the set threshold such as 80℃, the memory metal part 901 fully extends, pushing the slide 906 to a displacement of 15-20mm.

[0063] The incompressibility of the liquid forces the entire mounting cylinder 902 to move toward the contact plate 701, and the energized post 904 closes the circuit.

[0064] In this embodiment, a noise sensor is fixedly connected to one side of the movable plate 9, and a micro battery 101 is fixedly connected to one side of the fixed plate 601. When the noise sensor detects noise, the micro battery 101 turns on and supplies power to the power column 904.

[0065] In specific implementation, a noise sensor is installed on one side of the moving plate 9. When the characteristic noise of plunger jamming is a low-frequency impact of 200-500Hz, the micro battery 101 energizes the energized column 904. Only when the noise sensor detects noise will the energized column 904 touch the contact plate 701, triggering the first electromagnet 702 to generate magnetism, thereby driving the lubrication component to perform lubrication. A dual-condition triggering mechanism is established: oil injection is only started when the temperature is >55℃ and the noise frequency energy exceeds the standard. When both the temperature and noise signal exceed the threshold, injection is performed to avoid false triggering. This scheme can effectively prevent the pillar jamming failure through accurate perception of sound and temperature dual thresholds and dynamic pressure injection.

[0066] Example 4: A mounting metal frame 111 is fixedly connected to one side of the movable plate 9. A sliding block 112 is slidably connected inside the buzzer 11. A contact rod 113 is fixedly connected to the bottom of the sliding block 112. The contact rod 113 passes through the movable plate 9 and contacts the extension end of the support column. A second electromagnet plate 115 is provided on both sides of the sliding block 112. The second electromagnet plate 115 is slidably connected to the outside of the mounting metal frame 111. After being energized, it is magnetically attracted to the mounting metal frame 111. A tactile switch 116 is fixedly connected to the opposite side of the two second electromagnet plates 115. A first spring is provided between the second electromagnet plate 115 and the sliding block 112. A sixth spring 114 is fixedly connected between one of the second electromagnet plates 115 and one end of the mounting metal frame 111. A buzzer 11 is fixedly connected to the top of the movable plate 9. The buzzer 11 is electrically connected to the tactile switch 116. When the sliding block 112 contacts the tactile switch 116, the buzzer 11 produces a buzzing sound.

[0067] In practice, when monitoring the piston column during the pressurization process and finding no bulges or dents on its surface, the electric push rod 910 pushes the moving plate 9 to move, causing the contact rod 113 to contact the piston column surface. After contact, the mounting metal frame 111 and the second electromagnet plate 115 are magnetically attracted. When dents or bulges appear, the contact rod 113 will drive the sliding block 112 to move, and the sliding block 112 will then contact the tactile switch 116 on the second electromagnet plate 115, thereby triggering the buzzer 11 to sound. When the buzzer sounds, it indicates that the support column needs maintenance, and the pressurization operation is paused.

[0068] Example 5: The clamping assembly includes a support plate 201, which is disposed inside the fixed cylinder 2. A second telescopic rod 202 and a second spring 203 are fixedly connected between the support plate 201 and the fixed frame 1. Multiple clamping frames 206 are disposed on the outside of the fixed cylinder 2. A third telescopic rod 2064 and a third spring 2065 are fixedly connected between the clamping frames 206 and the fixed cylinder 2. Multiple connecting plates 204 are fixedly connected to the bottom of the support plate 201, and a guide plate 205 is fixedly connected to the top of the connecting plate 204. A guide groove 2051 is provided on the outer side of the plate 205. A connecting shaft 2052 is fixedly connected to the outer side of the clamping frame 206. The connecting shaft 2052 extends into the guide groove 2051 and is slidably connected to the guide groove 2051. An arc plate 2061 is provided at one end of the clamping frame 206. A threaded rod 2062 is rotatably connected to one side of the arc plate 2061. The threaded rod 2062 passes through the clamping frame 206 and is threadedly connected to the clamping frame 206. A telescopic rod 2063 is fixedly connected between the clamping frame 206 and the arc plate 2061.

[0069] In practice, when the bottom of the support column is placed inside the fixed cylinder 2 and contacts the support plate 201, the support plate 201 is pushed down. At this time, the support plate 201 drives the guide plate 205 down through the fixedly connected connecting plate 204. The guide plate 205 drives the connecting shaft 2052 on the outside of the clamping frame 206 to move through the guide groove 2051. This causes the arc plate 2061 on one side of the clamping frame 206 to automatically clamp the outside of the support column, ensuring that the support column is in the middle of the support plate 201 and the pressure sensor 3, thus improving the accuracy of detection. Furthermore, for different sizes, personnel can adjust the size by rotating the threaded rod 2062 to move the arc plate 2061.

[0070] A method for intelligent pressure testing of hydraulic suspension supports in mines includes the following steps:

[0071] Step 1: Use external hoisting equipment to hoist the bottom of the support column into the fixed cylinder 2, and use clamping components to clamp and fix the support column;

[0072] Step 2: The lifting component drives the support ring 4 to descend, so that the support ring 4 is fitted at the telescopic end of the support column, and hydraulic pressure is delivered to the support column through an external injection device.

[0073] Step 3: During the extension and retraction of the support column, if blockage occurs, the trigger will be activated, which will then cause the pusher to push the lubricant to spray lubrication onto the extension and retraction points of the support column. The extension and retraction ends of the support column will contact the pressure sensor 3, and the pressure on the support column will be observed through the pressure gauge 301.

[0074] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0075] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0076] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An intelligent pressure-pressurizing device for hydraulic suspension supports in mines, comprising a fixing frame (1), characterized in that, The fixed frame (1) has multiple fixed cylinders (2) fixedly connected to its bottom interior, and pressure sensors (3) corresponding one-to-one with the multiple fixed cylinders (2) fixedly connected to its top interior. The fixed frame (1) also has multiple pressure gauges (301) for displaying pressure on its top. Multiple support rings (4) are respectively set below multiple pressure sensors (3), and a lifting component for lifting is provided between the support rings (4) and the fixed frame (1); A fixed ring (5) is fixedly connected to the top of each of the multiple support rings (4). A rotating ring (6) is rotatably connected to the inner side of the fixed ring (5). Multiple placement slots are provided inside the fixed ring (5), and a lubrication component is provided inside the placement slot. Multiple through slots are provided inside the rotating ring (6), and a pusher is provided inside the through slot to push the lubrication component for spray lubrication. Multiple movable plates (9) are provided on the inner side of the rotating ring (6). A trigger is provided between the multiple movable plates (9) and the pusher. When the support is blocked during extension and retraction, the trigger is triggered, which in turn causes the pusher to push the lubricating component to spray lubrication onto the extension and retraction of the support. Each of the multiple fixed cylinders (2) is equipped with a clamping component for positioning the support column.

2. The intelligent pressure-pressurizing device for a hydraulically suspended support column in a mine according to claim 1, characterized in that: The top of the rotating ring (6) is fixedly connected to a gear ring (600), and a transmission gear (602) is meshed with the outside of the gear ring (600). The top of the fixed ring (5) is fixedly connected to a storage frame (501), and the top of the storage frame (501) is fixedly connected to a drive motor. The output shaft of the drive motor is fixedly connected to the transmission gear (602).

3. The intelligent pressure-pressurizing device for a hydraulically suspended support column in a mine according to claim 1, characterized in that: The lubrication assembly includes a squeezing plate (8), which is disposed inside the placement groove and slidably connected to a fixing ring (5). A folding bladder (802) is fixedly connected between the squeezing plate (8) and the fixing ring (5). A fourth spring (803) is sleeved on the outside of the folding bladder (802). A magnet (801) is fixedly connected to the side of the squeezing plate (8) away from the folding bladder (802). A spray pipe (804) is fixedly connected to one end of the folding bladder (802). A spray nozzle (806) for spraying is fixedly connected to one end of the spray pipe (804). An inlet pipe (805) is fixedly connected between the folding bladder (802) and the storage frame (501).

4. The intelligent pressure-pressurizing device for hydraulic suspension props in mines according to claim 3, characterized in that: The pusher includes a contact plate (701), which is disposed inside the through groove and fixedly connected to the rotating ring (6). A first electromagnet (702) is fixedly connected to the side of the contact plate (701) near the extrusion plate (8). When the first electromagnet (702) is energized, it repels the magnet (801) magnetically.

5. The intelligent pressure-pressurizing device for a hydraulically suspended support column in a mine according to claim 4, characterized in that: The triggering element includes a fixing plate (601), which is disposed inside the through groove and fixed to the rotating ring (6). A mounting cylinder (902) is slidably connected inside the fixing plate (601). A baffle (903) is fixedly connected to the side of the mounting cylinder (902) near the contact plate (701). A fifth spring (909) is fixedly connected between the baffle (903) and the contact plate (701). A sliding rod (905) is provided on the mounting cylinder (902). The sliding rod (905) passes through one end of the mounting cylinder (902) and is slidably connected to the mounting cylinder (902). A memory metal part (901) is fixedly connected between the sliding rod (905) and the moving plate (9). The memory metal part (901) extends after being heated. An energizing post (904) is fixedly connected to the side of the mounting cylinder (902) near the contact plate (701). After the energizing post (904) contacts the contact plate (701), the first electromagnet (702) is energized.

6. The intelligent pressure-pressurizing device for a hydraulically suspended support column in a mine according to claim 5, characterized in that: The trigger also includes a slide plate (906), which is fixedly connected to one end of the sliding rod (905) and slidably connected inside the mounting cylinder (902). An electric push rod (910) is fixedly connected to one side of the fixed plate (601). The telescopic end of the electric push rod (910) is fixedly connected to the moving plate (9). A storage cylinder (907) is fixedly connected to the top of the rotating ring (6). A connecting pipe (908) is fixedly connected between the storage cylinder (907) and the mounting cylinder (902), and a control valve is provided on the outside of the connecting pipe (908).

7. The intelligent pressure testing device for a hydraulically suspended support column in a mine according to claim 6, characterized in that: A noise sensor is fixedly connected to one side of the movable plate (9), and a micro battery (101) is fixedly connected to one side of the fixed plate (601). When the noise sensor detects noise, the micro battery (101) turns on and supplies power to the power column (904).

8. The intelligent pressure testing device for a hydraulic suspension support in a mine according to claim 1, characterized in that: A mounting metal frame (111) is fixedly connected to one side of the movable plate (9). A sliding block (112) is slidably connected inside the buzzer (11). A contact rod (113) is fixedly connected to the bottom of the sliding block (112). The contact rod (113) passes through the movable plate (9) and contacts the extension end of the support column. A second electromagnet plate (115) is provided on both sides of the sliding block (112). The second electromagnet plate (115) is slidably connected to the outside of the mounting metal frame (111). After being energized, it magnetically attracts the mounting metal frame (111). The two second electromagnet plates are also magnetically connected to the mounting metal frame (111). A tactile switch (116) is fixedly connected to each side of the iron plate (115). A first spring is provided between the second electromagnet plate (115) and the sliding block (112). A sixth spring (114) is fixedly connected between one of the second electromagnet plates (115) and one end of the mounting metal frame (111). A buzzer (11) is fixedly connected to the top of the moving plate (9). The buzzer (11) is electrically connected to the tactile switch (116). When the sliding block (112) contacts the tactile switch (116), the buzzer (11) produces a buzzing sound.

9. The intelligent pressure testing device for a hydraulic suspension support in a mine according to claim 1, characterized in that: The clamping assembly includes a support plate (201), which is disposed inside the fixed cylinder (2). A second telescopic rod (202) and a second spring (203) are fixedly connected between the support plate (201) and the fixed frame (1). Multiple clamping frames (206) are disposed on the outside of the fixed cylinder (2). A third telescopic rod (2064) and a third spring (2065) are fixedly connected between the clamping frames (206) and the fixed cylinder (2). Multiple connecting plates (204) are fixedly connected to the bottom of the support plate (201). A guide plate (205) is fixedly connected to the top of the connecting plate (204). 205) A guide groove (2051) is provided on the outside. A connecting shaft (2052) is fixedly connected to the outside of the clamping frame (206). The connecting shaft (2052) extends into the guide groove (2051) and is slidably connected to the guide groove (2051). An arc plate (2061) is provided at one end of the clamping frame (206). A threaded rod (2062) is rotatably connected to one side of the arc plate (2061). The threaded rod (2062) passes through the clamping frame (206) and is threadedly connected to the clamping frame (206). A telescopic rod (2063) is fixedly connected between the clamping frame (206) and the arc plate (2061).

10. A method for intelligent pressure testing of hydraulically suspended props in mines, applicable to the intelligent pressure testing device for hydraulically suspended props in mines as described in any one of claims 1 to 9, characterized in that: Includes the following steps: Step 1: The bottom of the support column is hoisted into the fixed cylinder (2) by external hoisting equipment, and the support column is clamped and fixed by clamping components; Step 2: The lifting component drives the support ring (4) to descend, so that the support ring (4) is fitted onto the telescopic end of the support column, and hydraulic pressure is delivered to the support column through an external injection device; Step 3: During the extension and retraction of the support column, if the column becomes blocked during extension and retraction, the trigger is activated, which in turn causes the pusher to push the lubricant to spray lubrication onto the extension and retraction of the support column. The extension and retraction end of the support column contacts the pressure sensor (3), and the pressure on the support column is observed through the pressure gauge (301).

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