Fracturing device maintenance apparatus

Abstract

A fracturing device maintenance apparatus, comprising a base plate (1), a frame (2), a heightening frame (3), a hopper assembly (4), fixed guide rails (5) and a water storage pipe (6). By means of the utilization of a fracturing device's own gravity, the fracturing device maintenance apparatus can convert the gravity of the fracturing device into pressure to complete a grinding operation for the fracturing device. The entire process requires no handheld operation, and has no risk of displacement and falling, thereby increasing the safety factor.

Description

Fracturing equipment maintenance equipment Technical Field

[0001] This invention belongs to the field of fracturing device technology, specifically fracturing device maintenance equipment. Background Technology

[0002] A carbon dioxide fracturing device is a physical fracturing technology that uses supercritical carbon dioxide as the working medium. It injects supercritical carbon dioxide into rock fissures, increasing the internal pressure and causing the fissures to expand, thus achieving rock fracturing and extraction. The carbon dioxide fracturing device resembles a steel pipe in shape, hollow inside, and is typically filled with carbon dioxide to achieve the fissure expansion function. Operating in harsh conditions underground, including prolonged contact with coal dust and mine moisture, the device is prone to rusting, thread corrosion, and coal dust adhesion, which can damage the equipment. To ensure safe and efficient operation, regular maintenance of the carbon dioxide fracturing device is necessary. Technical issues

[0003] The conventional maintenance process for fracturing equipment involves an operator holding the fracturing equipment to one end of a grinding device and quickly grinding the outer surface of the fracturing equipment by moving the equipment. This grinding method requires the operator to hold the equipment continuously, and when grinding fracturing equipment in batches, the three processes of feeding, grinding, and unloading need to be repeated frequently, resulting in low maintenance efficiency, low automation, and inability to perform rapid grinding operations on a large number of fracturing equipment. Technical solutions

[0004] The purpose of this invention is to provide a fracturing device maintenance device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A base plate (1) is included, with frames (2) fixedly connected to the left and right sides of the top of the base plate (1). An elevating frame (3) is fixedly connected to the top of the frame (2), and a hopper assembly (4) is provided at the top of the elevating frame (3). Fixed guide rails (5) are fixedly connected to the front and rear sides of the two frames (2) at opposite ends. A water storage pipe (6) is fixedly connected to the middle of the top of the base plate (1), and a support plate (14) is provided above the water storage pipe (6). The fixed guide rails (5) are connected to the grinding assembly. (18) The local structures are connected by a movable interlocking mechanism. Support legs (21) are installed at the bottom of the base plate (1) near the four corners. A piston plate (7) is movably sleeved inside the water storage pipe (6). A piston rod (8) located inside the water storage pipe (6) is fixedly connected to the top of the piston plate (7). The piston plate (7) moves up and down relative to the water storage pipe (6). The top of the piston rod (8) passes through the top of the water storage pipe (6) and is fixedly connected to a movable frame (10). The left and right ends of the movable frame (10) are connected to the local structures of the grinding assembly (18).

[0006] Furthermore, the hopper assembly (4) includes a collection hopper (401), with extension plates (402) fixedly connected to both the left and right sides of the collection hopper (401), and automatic doors (403) movably installed on both the left and right sides of the bottom end of the collection hopper (401) directly above the pallet (14).

[0007] Furthermore, a movable rod (11) is fixedly connected to the middle of the top of the movable frame (10), and the top of the movable rod (11) is connected to the middle of the bottom of the support plate (14).

[0008] Furthermore, a cleaning roller (16) is embedded in the middle of the top of the tray (14). The cleaning roller (16) rotates left and right relative to the tray (14). A micro motor is built into the tray (14) to control the rotation of the cleaning roller (16). Pressure sensors (17) located on the front and rear sides of the cleaning roller (16) are fixedly connected to the top of the tray (14).

[0009] Furthermore, discharge rollers (15) are symmetrically inlaid on the top of the pallet (14) near the front and rear sides. The discharge rollers (15) rotate back and forth relative to the pallet (14). The pallet (14) has a built-in power chain mechanism to control the synchronous rotation of the discharge rollers (15). The rotation direction of the discharge rollers (15) is perpendicular to the rotation direction of the cleaning rollers (16).

[0010] Furthermore, there are four grinding components (18) in total, each corresponding to one of the four fixed guide rails (5). Each grinding component (18) includes a mounting rod (181), which is connected to one side of the movable frame (10). The top of each mounting rod (181) is fixedly connected to a first fixed seat (182). The end of the first fixed seat (182) away from the mounting rod (181) is movably connected to a connecting rod (184) via a rotating shaft.

[0011] Furthermore, the end of the connecting rod (184) away from the first fixed seat (182) is movably connected to the second fixed seat (183) via a rotating shaft. The top of the second fixed seat (183) is connected to a guide block (185). The guide block (185) is movably engaged with the fixed guide rail (5). The guide block (185) moves left and right relative to the fixed guide rail (5).

[0012] Furthermore, a fixing frame (19) is provided on one side of the guide block (185), and the fixing frame (19) is connected to two guide blocks (185) located on the same side. There are two fixing frames (19) in total, and they are located on the left and right sides of the top of the tray (14) respectively. Grinding rollers (20) are movably connected inside the two fixing frames (19).

[0013] Furthermore, the bottom end of the water storage pipe (6) is fixedly connected to a water inlet valve (13), the bottom end of the water inlet valve (13) penetrates the bottom end of the base plate (1), and the outer side of the piston rod (8) is movably sleeved with a limit spring (9), the upper and lower ends of the limit spring (9) are respectively connected to the top end of the inner cavity of the water storage pipe (6) and the top end of the piston plate (7). Beneficial effects

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. This invention utilizes the gravity of the fracturing device itself, transforming the gravity into pressure. This allows the support plate to move downwards while simultaneously bringing the two grinding rollers closer together. Ultimately, the two grinding rollers and the support plate provide three-point support. Through this three-point support and the drive of the cleaning rollers, rapid grinding can be performed while the fracturing device is supported. The entire process requires no manual operation, eliminating the risk of displacement or falls, and significantly improving the safety factor.

[0016] 2. This invention utilizes the individual placement of fracturing devices in the hopper assembly, along with the fracturing device's own gravity, water pressure, and the rotation of the discharge rollers. This allows the device to automatically place individual fracturing devices, automatically limit and fix them, and automatically grind them. Simultaneously, it can automatically eject the fracturing devices after automatic grinding is completed. The entire process has a high degree of automation, eliminating the need for manual grinding and frequent loading and unloading processes, effectively reducing labor intensity and thus improving grinding efficiency during batch grinding.

[0017] 3. This invention further utilizes the gravity of the fracturing device itself and the pressure provided by the fracturing device to trigger the solenoid valve inside the water delivery hose. This ensures that the fracturing device is in contact with clean water throughout the grinding process, thereby achieving grinding and cooling while reducing debris during grinding. It also automatically cleans the surface of the fracturing device, reducing the cleaning and wiping steps required after traditional maintenance, shortening maintenance time, and improving maintenance efficiency. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the bottom structure of the present invention;

[0020] Figure 3 is a separate schematic diagram of the hopper assembly structure of the present invention;

[0021] Figure 4 is a schematic diagram of the automatic hatch structure of the present invention in the open state;

[0022] Figure 5 is a schematic diagram of the cooperation between the water storage pipe, the grinding component and the fixed guide rail structure of the present invention;

[0023] Figure 6 is a schematic diagram of the cooperation between the tray and the water storage pipe structure of the present invention;

[0024] Figure 7 is a cross-sectional schematic diagram of the internal structure of the water storage pipe and water delivery hose of the present invention;

[0025] Figure 8 is a schematic diagram of the cooperation between the grinding component and the fixed guide rail structure of the present invention;

[0026] Figure 9 is an exploded view of the guide block and fixed guide rail structure of the present invention;

[0027] Figure 10 is an exploded view of the fixing frame and grinding roller structure of the present invention;

[0028] Figure 11 is a schematic diagram of another embodiment of the grinding roller of the present invention;

[0029] Figure 12 is a schematic diagram of another embodiment of the hopper assembly of the present invention;

[0030] Figure 13 is an enlarged schematic diagram of the structure at point A in Figure 11;

[0031] Figure 14 is a schematic diagram of another embodiment of the pallet of the present invention.

[0032] In the diagram: 1. Base plate; 2. Frame; 3. Elevator frame; 4. Hopper assembly; 401. Collecting hopper; 402. Extension plate; 403. Automatic door; 404. Reinforcing frame; 405. Locking frame; 406. Conveyor belt; 407. Material blocking protrusion; 5. Fixed guide rail; 6. Water storage pipe; 7. Piston plate; 8. Piston rod; 9. Limit spring; 10. Movable frame; 11. Movable rod; 12. Water supply hose; 13. Water inlet valve; 14. Support plate; 15. Discharge roller; 16. Cleaning roller; 17. Pressure sensor; 18. Grinding assembly; 181. Mounting rod; 182. First fixed seat; 183. Second fixed seat; 184. Connecting rod; 185. Guide block; 19. Fixed frame; 20. Grinding roller; 201. Grinding ring; 21. Support leg; 22. Oil injector. Embodiments of the present invention

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] As shown in Figures 1 to 14, in this embodiment of the invention, the fracturing device maintenance equipment includes a base plate 1. A frame 2 is fixedly connected to both the left and right sides of the top of the base plate 1. A lifting frame 3 is fixedly connected to the top of the frame 2. A hopper assembly 4 is provided at the top of the lifting frame 3. Fixed guide rails 5 are fixedly connected to the front and rear sides of the two frames 2, which are relatively close to one end. A water storage pipe 6 is fixedly connected to the middle of the top of the base plate 1. A support plate 14 is provided above the water storage pipe 6. The fixed guide rails 5 are movably engaged with a partial structure of the grinding assembly 18. Support legs 21 are installed at the bottom of the base plate 1 near the four corners. A piston plate 7 is movably sleeved inside the water storage pipe 6. A piston rod 8 located inside the water storage pipe 6 is fixedly connected to the top of the piston plate 7. The piston plate 7 moves vertically relative to the water storage pipe 6. The top of the piston rod 8 passes through the top of the water storage pipe 6 and is fixedly connected to a movable frame 10. The left and right ends of the movable frame 10 are connected to a partial structure of the grinding assembly 18.

[0035] In actual use, the device can be placed on a flat ground by the support leg 21 at the bottom of the base plate 1, and the external water pipe can be connected to the water inlet valve 13. At the same time, the corresponding fracturing device to be maintained can be prepared, the grinding component 18 can be reset, and the support plate 14 can be reset to complete the preparation work before the fracturing device maintenance.

[0036] As shown in Figures 3 and 4, the hopper assembly 4 includes a collection hopper 401, with extension plates 402 fixedly connected to both the left and right sides of the collection hopper 401, and automatic doors 403 movably installed on both the left and right sides of the bottom of the collection hopper 401, located directly above the pallet 14.

[0037] When maintaining the fracturing equipment, the fracturing equipment to be maintained can be stacked in batches inside the collection hopper 401, i.e., multiple fracturing equipment are stacked on top of each other. At the same time, when maintaining a single fracturing equipment, the valve at the bottom of the collection hopper 401 can be opened by opening the automatic door 403 to release the fracturing equipment located inside the collection hopper 401. Each time the automatic door 403 is opened, only a single fracturing equipment can pass through, completing the delivery process of a single fracturing equipment.

[0038] As shown in Figures 5 and 6, a movable rod 11 is fixedly connected to the middle of the top of the movable frame 10. The top of the movable rod 11 is connected to the middle of the bottom of the tray 14. A cleaning roller 16 is embedded in the middle of the top of the tray 14. The cleaning roller 16 rotates left and right relative to the tray 14. A micro motor is built into the tray 14 to control the rotation of the cleaning roller 16. Pressure sensors 17 located on the front and rear sides of the cleaning roller 16 are fixedly connected to the top of the tray 14. Discharge rollers 15 are symmetrically embedded in the top of the tray 14 near the front and rear sides. The discharge rollers 15 rotate back and forth relative to the tray 14. A power chain mechanism is built into the tray 14 to control the synchronous rotation of the discharge rollers 15. The rotation direction of the discharge rollers 15 is perpendicular to the rotation direction of the cleaning rollers 16.

[0039] During the maintenance of the fracturing device, when a single fracturing device is placed on the top of the pallet 14, the outer surface of the single fracturing device can contact the outer surfaces of the cleaning roller 16 and the discharge roller 15. The cleaning roller 16 is located in the middle of the single fracturing device. When the fracturing device is fixed and maintained, the micro motor can be turned on to drive the cleaning roller 16 to rotate. At this time, the discharge roller 15 should be stopped. The cleaning roller 16 can then apply force to the fracturing device and achieve active rotation of the fracturing device by means of friction, thus completing the grinding operation. When the grinding is completed and discharge is required, the cleaning roller 16 can be stopped and the power chain mechanism can be turned on to drive multiple discharge rollers 15 to rotate synchronously.

[0040] As shown in Figures 5, 8, 9, and 10, there are four grinding components 18, each corresponding to one of the four fixed guide rails 5. Each grinding component 18 includes a mounting rod 181 connected to one side of the movable frame 10. The top of each mounting rod 181 is fixedly connected to a first fixed seat 182. The end of the first fixed seat 182 away from the mounting rod 181 is movably connected to a connecting rod 184 via a pivot. The end of the connecting rod 184 away from the first fixed seat 182 is movably connected to a second fixed seat 183 via a pivot. The top of each second fixed seat 183 is connected to a guide block 185. The guide block 185 is movably engaged with the fixed guide rail 5 and can move left and right relative to the fixed guide rail 5. A fixed frame 19 is provided on one side of the guide block 185. The fixed frame 19 is connected to two guide blocks 185 located on the same side. There are two fixed frames 19, located on the left and right sides of the top of the support plate 14, respectively. Grinding rollers 20 are movably connected inside both fixed frames 19.

[0041] Example 1: When the fracturing device is placed on the top of the support plate 14, it applies pressure to the support plate 14. The support plate 14 and the movable rod 11 at the bottom move downwards, causing the movable frame 10 to move downwards as well. The piston rod 8 and piston plate 7 move downwards relative to the water storage pipe 6, and the piston rod 8 is stretched. When the movable frame 10 moves downwards, the mounting rod 181 moves downwards simultaneously and applies tension to the connecting rod 184. The connecting rod 184 then deflects, meaning that both sets of connecting rods 184 deflect inwards simultaneously, applying a pushing force to the guide block 185. The two sets of guide blocks 185 then move closer together, ultimately driving the fixed frame 19 and the grinding roller 20 to move closer together until the grinding roller 20 contacts the outer surface of the fracturing device. The grinding rollers 20 on both sides and the support plate 14 at the bottom provide three-point support for the fracturing device, completing the fixing and limiting process.

[0042] Once the fixed limit is reached, the fracturing device can rotate synchronously due to the active rotation of the cleaning roller 16. At this time, the outer surface of the fracturing device can rotate relative to the grinding roller 20. The grinding roller 20 then comes into full contact with the outer surface of the fracturing device, and the automatic grinding and cleaning process of the outer surface of the fracturing device is completed by friction.

[0043] By utilizing the gravity of the fracturing device itself, the gravity of the fracturing device is converted into pressure, so that the support plate 14 moves down and the two grinding rollers 20 move closer to each other. Finally, the two grinding rollers 20 and the support plate 14 are used to complete the three-point support. Through the three-point support and the drive of the cleaning roller 16, the fracturing device can be supported and the grinding operation can be carried out quickly. The whole process does not require hand operation, and there is no risk of displacement or falling, which significantly improves the safety factor.

[0044] Example 2: After the fracturing device is polished, the solenoid valve inside the water supply hose 12 can be closed, and clean water can be continuously supplied to the water inlet valve 13. At the same time, the water pressure is increased. As the water is injected, the piston plate 7 rises and drives the piston rod 8, the movable frame 10, and the movable rod 11 to move upward. At this time, the support plate 14 moves upward and drives the two connecting rods 184 to deflect away from the center. Finally, the two guide blocks 185 move away from each other. At this time, the two polishing rollers 20 move away from each other and are released from their fixation to the sides of the fracturing device. At this time, the discharge roller 15 is opened to drive the fracturing device to move to the front or rear end, automatically completing the discharge of the fracturing device. After the discharge is completed, the hopper assembly 4 continues to feed a single fracturing device to complete the cycle operation.

[0045] By utilizing the individual fracturing device of the hopper assembly 4, as well as the fracturing device's own gravity, water pressure, and the rotation of the discharge roller 15, the device can automatically release individual fracturing devices, automatically limit and fix them, and automatically grind them. At the same time, it can automatically eject the fracturing device after completing the automatic grinding. The whole process is highly automated, eliminating the need for manual grinding and frequent loading and unloading processes, effectively reducing labor intensity and improving grinding efficiency when grinding in batches.

[0046] As shown in Figures 5, 6, and 7, the bottom end of the water storage pipe 6 is fixedly connected to the water inlet valve 13. The bottom end of the water inlet valve 13 passes through the bottom end of the base plate 1. The outer side of the piston rod 8 is movably sleeved with a limit spring 9. The upper and lower ends of the limit spring 9 are respectively connected to the top end of the inner cavity of the water storage pipe 6 and the top end of the piston plate 7. The left and right sides of the water storage pipe 6 near the bottom end are fixedly connected to water delivery hoses 12. The other end of the water delivery hose 12 passes through the top end of the support plate 14 and is embedded between the support plate 14. The input end of the water delivery hose 12 is equipped with a solenoid valve. The output end of the pressure sensor 17 is electrically connected to the input end of the solenoid valve.

[0047] When a single fracturing device is placed on the top of the tray 14, it comes into contact with the pressure sensor 17. The pressure sensor 17 is then subjected to pressure and opens the solenoid valve inside the water supply hose 12. At this time, clean water injected through the water inlet valve 13 is delivered from the top of the tray 14 through the water supply hose 12 and acts on the surface of the fracturing device, completing the polishing and automatic cleaning. When there is no fracturing device on the surface of the tray 14, the valve inside the water supply hose 12 automatically closes, completing the self-cleaning process.

[0048] By further utilizing the gravity of the fracturing device itself and the pressure provided by the fracturing device, the solenoid valve inside the water supply hose 12 is triggered by the pressure, so that the fracturing device is in contact with clean water throughout the grinding process. This achieves grinding and cooling while reducing debris during grinding and automatically cleaning the surface of the fracturing device. This reduces the cleaning and wiping steps required after traditional maintenance, shortens maintenance time, and improves maintenance efficiency.

[0049] Example 3: As shown in Figures 11 and 13, grinding rings 201 are equidistantly fitted on the front and rear sides of the outer side of the grinding roller 20. Grinding protrusions are installed on the outer side of the grinding rings 201. During the grinding process of the fracturing device, the relative position of the grinding rings 201 can be adjusted so that they can be embedded in the threaded parts at both ends of the fracturing device, and the threaded parts of the fracturing device are ground by the rotation of the grinding roller 20.

[0050] Example 4: As shown in Figure 14, an oil injector 22 can be installed on one side of the tray 14. An oil supply pipe is installed at the bottom of the oil injector 22 and is connected to an external oil bottle. After the grinding and cleaning of the fracturing device is completed, the oil injector 22 can be turned on to spray oil onto the outer surface of the fracturing device in conjunction with the rotation of the fracturing device, thereby improving the maintenance effect.

[0051] Example 5: As shown in Figure 12, reinforcing frames 404 can be installed on the left and right sides of the hopper 401 and near the front and rear ends. A locking frame 405 is installed on the reinforcing frame 404 on the right side. The hopper assembly 4 also includes a conveyor belt 406 located on the right side of the hopper 401. The conveyor belt 406 is connected to the locking frame 405, and the outer side of the conveyor belt 406 is equipped with material blocking protrusions at equal angles.

[0052] The reinforcing frame 404 can improve the stability of the hopper 401 and enhance its support performance. In order to facilitate feeding and improve feeding efficiency, a single fracturing device can be placed between every two baffle protrusions 407. During feeding, the conveyor belt 406 can be turned on periodically to complete the automatic conveying of a single fracturing device and realize the automatic feeding process.

[0053] Working principle and usage process:

[0054] When maintaining the fracturing device, the fracturing devices to be maintained can be stacked in batches inside the collection hopper 401, i.e., multiple fracturing devices are stacked on top of each other. At the same time, when maintaining a single fracturing device, the valve at the bottom of the collection hopper 401 can be opened by opening the automatic door 403 to release the fracturing device located inside the collection hopper 401. Each time the automatic door 403 is opened, only a single fracturing device can pass through, completing the process of releasing a single fracturing device.

[0055] When the fracturing device is placed on the top of the support plate 14, it can apply a certain pressure to the support plate 14. At this time, the support plate 14 and the movable rod 11 at the bottom move down, and drive the movable frame 10 to move down. At this time, the piston rod 8 and the piston plate 7 move down relative to the water storage pipe 6, and the piston rod 8 is stretched. When the movable frame 10 moves down, the mounting rod 181 moves down synchronously and applies a pulling force to the connecting rod 184. At this time, the connecting rod 184 deflects, that is, the left and right sets of connecting rods 184 deflect inward at the same time, and apply a pushing force to the guide block 185. At this time, the left and right sets of guide blocks 185 move closer to each other, and finally drive the fixed frame 19 and the grinding roller 20 to move closer to each other until the grinding roller 20 contacts the outer side of the fracturing device. The fracturing device can be supported at three points by the grinding rollers 20 on both sides and the support plate 14 at the bottom, thus completing the fixed and limited process.

[0056] During the maintenance of the fracturing device, when a single fracturing device is placed on the top of the pallet 14, the outer surface of the single fracturing device can contact the outer surfaces of the cleaning roller 16 and the discharge roller 15. The cleaning roller 16 is located in the middle of the single fracturing device. When the fracturing device is fixed and maintained, the micro motor can be turned on to drive the cleaning roller 16 to rotate. At this time, the discharge roller 15 should be stopped. The cleaning roller 16 can apply force to the fracturing device and achieve active rotation of the fracturing device by friction to complete the grinding operation. When the grinding is completed and the material needs to be discharged, the cleaning roller 16 can be stopped and the power chain mechanism can be turned on to drive multiple discharge rollers 15 to rotate synchronously.

[0057] After the fixed limit is completed, the cracker can rotate synchronously due to the active rotation of the cleaning roller 16. At this time, the outer side of the cracker can rotate relative to the grinding roller 20. The grinding roller 20 then comes into full contact with the outer side of the cracker, and the automatic grinding and cleaning process of the outer side of the cracker is completed by friction.

[0058] When a single fracturing device is placed on the top of the tray 14, it comes into contact with the pressure sensor 17. The pressure sensor 17 is then subjected to pressure and opens the solenoid valve inside the water supply hose 12. At this time, clean water injected through the water inlet valve 13 is delivered from the top of the tray 14 through the water supply hose 12 and acts on the surface of the fracturing device, completing the polishing and automatic cleaning. When there is no fracturing device on the surface of the tray 14, the valve inside the water supply hose 12 automatically closes, completing the self-cleaning process.

[0059] After the fracturing device is polished, the solenoid valve inside the water supply hose 12 can be closed, and clean water can be continuously supplied to the water inlet valve 13. At the same time, the water pressure is increased. As the water is injected, the piston plate 7 rises and drives the piston rod 8, the movable frame 10, and the movable rod 11 to move upward. At this time, the support plate 14 moves upward and drives the two connecting rods 184 to deflect away from the center. Finally, the two guide blocks 185 move away from each other. At this time, the two polishing rollers 20 move away from each other and are released from their fixation to the sides of the fracturing device. The discharge roller 15 can then be opened to drive the fracturing device to move to the front or rear end, automatically completing the discharge of the fracturing device. After the discharge is completed, the hopper assembly 4 continues to feed a single fracturing device, completing the cycle operation process.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fracturing device maintenance device, including a base plate (1), characterized in that: The top left and right sides of the base plate (1) are fixedly connected to the frame (2), the top of the frame (2) is fixedly connected to the elevating frame (3), the top of the elevating frame (3) is provided with a hopper assembly (4), the front and rear sides of the two frames (2) are fixedly connected to each other at one end, the middle of the top of the base plate (1) is fixedly connected to the water storage pipe (6), the top of the water storage pipe (6) is provided with a support plate (14), and the fixed guide rail (5) and the local structure of the grinding assembly (18) are movable. Next, support legs (21) are installed at the bottom of the base plate (1) near the four corners. A piston plate (7) is movably sleeved inside the water storage pipe (6). A piston rod (8) located inside the water storage pipe (6) is fixedly connected to the top of the piston plate (7). The piston plate (7) moves up and down relative to the water storage pipe (6). The top of the piston rod (8) passes through the top of the water storage pipe (6) and is fixedly connected to a movable frame (10). The left and right ends of the movable frame (10) are connected to the local structure of the grinding assembly (18).

2. The fracturing device maintenance equipment according to claim 1, characterized in that: The hopper assembly (4) includes a collection hopper (401), with extension plates (402) fixedly connected to both the left and right sides of the collection hopper (401), and automatic doors (403) movably installed on both the left and right sides of the bottom of the collection hopper (401) directly above the pallet (14).

3. The fracturing device maintenance equipment according to claim 1, characterized in that: A movable rod (11) is fixedly connected to the middle of the top of the movable frame (10), and the top of the movable rod (11) is connected to the middle of the bottom of the tray (14).

4. The fracturing device maintenance equipment according to claim 1, characterized in that: A cleaning roller (16) is embedded in the middle of the top of the tray (14). The cleaning roller (16) rotates left and right relative to the tray (14). A micro motor is built into the tray (14) to control the rotation of the cleaning roller (16). Pressure sensors (17) located on the front and rear sides of the cleaning roller (16) are fixedly connected to the top of the tray (14).

5. The fracturing device maintenance equipment according to claim 4, characterized in that: The top of the pallet (14) is symmetrically fitted with discharge rollers (15) near the front and rear sides. The discharge rollers (15) rotate back and forth relative to the pallet (14). The pallet (14) has a built-in power chain mechanism to control the synchronous rotation of the discharge rollers (15). The rotation direction of the discharge rollers (15) is perpendicular to the rotation direction of the cleaning rollers (16).

6. The fracturing device maintenance equipment according to claim 1, characterized in that: There are four grinding components (18) in total, and they correspond to four fixed guide rails (5) respectively. Each grinding component (18) includes a mounting rod (181). The mounting rod (181) is connected to one side of the movable frame (10). The top of each mounting rod (181) is fixedly connected to a first fixed seat (182). The end of the first fixed seat (182) away from the mounting rod (181) is movably connected to a connecting rod (184) through a rotating shaft.

7. The fracturing device maintenance equipment according to claim 6, characterized in that: The end of the connecting rod (184) away from the first fixed seat (182) is movably connected to the second fixed seat (183) via a rotating shaft. The top of the second fixed seat (183) is connected to a guide block (185). The guide block (185) is movably engaged with the fixed guide rail (5). The guide block (185) moves left and right relative to the fixed guide rail (5).

8. The fracturing device maintenance equipment according to claim 7, characterized in that: A fixing frame (19) is provided on one side of the guide block (185). The fixing frame (19) is connected to two guide blocks (185) located on the same side. There are two fixing frames (19) in total, located on the left and right sides of the top of the tray (14). Grinding rollers (20) are movably connected inside the two fixing frames (19).

9. The fracturing device maintenance equipment according to claim 1, characterized in that: The bottom end of the water storage pipe (6) is fixedly connected to the water inlet valve (13), the bottom end of the water inlet valve (13) penetrates the bottom end of the base plate (1), and the outer side of the piston rod (8) is movably sleeved with a limit spring (9). The upper and lower ends of the limit spring (9) are respectively connected to the top end of the inner cavity of the water storage pipe (6) and the top end of the piston plate (7).

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