Coal mine underground high-pressure hydraulic fracturing hole packer recovery device

Abstract

The utility model relates to the technical field of hydraulic fracturing, and provides an underground coal mine high-pressure hydraulic fracturing hole packer recycling device which comprises a bottom plate, a first driving mechanism, a lifting plate, a second driving mechanism and a clamping mechanism, the first driving mechanism is arranged on the bottom plate and drives the lifting plate to ascend or descend, and the second driving mechanism is arranged on the lifting plate and drives the lifting plate to ascend or descend. The second driving mechanism is in driving connection with the clamping mechanism, and the clamping mechanism is used for clamping the hole packer body. By arranging the first driving mechanism, the second driving mechanism and the clamping mechanism, when the hole packer main body needs to be recycled, the clamping mechanism is arranged below the hole packer main body, the first driving mechanism drives the lifting plate to move upwards, and the first driving mechanism stops working after the lifting plate moves to a set position; the clamping mechanism is used for clamping the lantern ring on the hole packer body, the second driving mechanism drives the clamping mechanism to move towards the end away from the wall, and then the hole packer body can be pulled out, so that the operation difficulty and labor intensity of workers are reduced.

Description

Technical Field

[0001] This application relates to the field of hydraulic fracturing technology, and more specifically, to a device for recovering sealing devices from high-pressure hydraulic fracturing in coal mines. Background Technology

[0002] A borehole sealer is a device used for water injection or gas drainage in coal seams. Its main function is to form a seal at the borehole opening to facilitate water injection or drainage operations.

[0003] The current installation and retrieval of hole sealers are all done manually. That is, the hole sealer is inserted into the borehole by hand and pulled out by hand after use. Due to the influence of the amount of manpower, the installation depth of the hole sealer is generally around 10m. During the retrieval process, since there is no special retrieval connection device, the hole sealer is basically pulled out by dragging the drain pipe. This can easily damage the connection between the drain pipe and the hole sealer, and may even result in a situation where it cannot be pulled out, making the retrieval efficiency low.

[0004] The prior art CN221742563U discloses a high-pressure hydraulic fracturing sealing device recovery device for coal mines. It uses a collar, a snap-fit ​​structure, a connecting structure, and a pull-out device. After a semi-annular snap-fit ​​plate is fitted onto the collar, the threaded rod is rotated, causing the connecting structure to move along the threaded rod. The connecting structure and the collar pull out the sealing device body. However, in the prior art CN221742563U, the semi-annular snap-fit ​​plate and the collar are only connected by the elastic force of a spring, resulting in poor stability. Furthermore, due to the lack of a support structure, during the extraction of the sealing device body, sufficient force needs to be applied to the pressure plate to ensure it remains against the wall, while simultaneously applying support force to the threaded rod and continuously rotating it. The support force required from personnel also continuously increases during the extraction of the sealing device body, increasing the difficulty and labor intensity of the operation. Utility Model Content

[0005] The purpose of this application is to provide a high-pressure hydraulic fracturing sealing device recovery device for underground coal mines, which reduces the difficulty and labor intensity of personnel operations.

[0006] This application provides a coal mine underground high-pressure hydraulic fracturing sealing device recovery device, which adopts the following technical solution:

[0007] A coal mine high-pressure hydraulic fracturing sealing device recovery device includes a base plate, a first drive mechanism, a lifting plate, a second drive mechanism, and a locking mechanism. The first drive mechanism is disposed on the base plate and drives the lifting plate to rise or fall. The second drive mechanism is disposed on the lifting plate and drives the locking mechanism to lock the sealing device body.

[0008] Preferably, the lower end of the base plate is provided with a universal self-locking wheel.

[0009] Preferably, the first driving mechanism includes a cylinder and a plurality of telescopic rods, the fixed end of the cylinder is disposed on the base plate, the telescopic rod of the cylinder is connected to the lifting plate, and the telescopic rod is disposed between the base plate and the lifting plate.

[0010] Preferably, the second driving mechanism includes a motor, a threaded rod, a slide rail, a slider, a mounting plate, and a limiting block. The mounting plate, the slide rail, and the limiting block are all disposed on the mounting plate. The mounting plate and the limiting block are respectively located at both ends of the slide rail. The motor is disposed on the mounting plate. The threaded rod is rotatably mounted on the limiting block. The other end of the threaded rod passes through the mounting plate and is connected to the motor. The slider is disposed on the slide rail and threadedly sleeved on the threaded rod. The locking mechanism is disposed on the slider.

[0011] Preferably, the locking mechanism includes a lower locking block, an upper locking block, and a connector. The lower locking block is disposed on the slider, and both the lower locking block and the upper locking block are provided with locking slots. The upper locking block is detachably mounted on the lower locking block, and the connector is used to connect and fix the lower locking block and the upper locking block.

[0012] Preferably, the lower card block has two slots, the upper card block has two inserts, and there are two connectors.

[0013] Preferably, the connector is a hand-tightened Torx head screw.

[0014] Compared with the prior art, the beneficial effects of this application are as follows:

[0015] This application, by setting up a first driving mechanism, a second driving mechanism, and a locking mechanism, allows the sealing device body to be retracted when needed. First, the locking mechanism is placed below the sealing device body. Then, the first driving mechanism drives the lifting plate to move upward. After the lifting plate moves to the set position, the first driving mechanism stops working. Then, the locking mechanism locks the collar on the sealing device body. Subsequently, the second driving mechanism drives the locking mechanism to move to the end away from the wall, thereby pulling out the sealing device body, thus reducing the difficulty and labor intensity of personnel. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a side view of the present invention;

[0019] Figure 3 This is an anatomical diagram of the snap-fit ​​mechanism in this utility model;

[0020] Figure 4 This is a schematic diagram of the lower locking block in this utility model;

[0021] Figure 5 This is a schematic diagram of the upper card block in this utility model.

[0022] The reference numerals in the attached figures are as follows:

[0023] 1. Base plate; 2. First drive mechanism; 3. Lifting plate; 4. Second drive mechanism; 5. Snap-fit ​​mechanism; 6. Sealing device body; 7. Collar; 8. Universal self-locking wheel; 9. Cylinder; 10. Telescopic rod; 11. Motor; 12. Threaded rod; 13. Slide rail; 14. Slider; 15. Mounting plate; 16. Limit block; 17. Lower snap-fit ​​block; 18. Upper snap-fit ​​block; 19. Connector; 20. Slot; 21. Slot; 22. Insert block. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] Example

[0031] like Figure 1-5 As shown in the embodiment of this application, the coal mine high-pressure hydraulic fracturing sealing device recovery device includes a base plate 1, a first drive mechanism 2, a lifting plate 3, a second drive mechanism 4, and a locking mechanism 5. The first drive mechanism 2 is disposed on the base plate 1 and drives the lifting plate 3 to rise or fall. The second drive mechanism 4 is disposed on the lifting plate 3 and drives the locking mechanism 5. The locking mechanism 5 is used to lock the sealing device body 6. A collar 7 is fixedly sleeved on the sealing device body 6.

[0032] When the sealing device body 6 needs to be recycled, the locking mechanism 5 is first placed below the sealing device body 6, and then the lifting plate 3 is driven to move upward by the first drive mechanism 2. After the lifting plate 3 moves to the set position, the first drive mechanism 2 stops working. Then, the locking mechanism 5 is used to lock the collar 7 on the sealing device body 6. Subsequently, the second drive mechanism 4 drives the locking mechanism 5 to move to the end away from the wall, so that the sealing device body 6 can be pulled out, thereby reducing the difficulty and labor intensity of personnel. After the sealing device body 6 is removed from the locking mechanism 5, it can be used for the recycling of other sealing device bodies 6.

[0033] like Figure 1 and Figure 2 As shown in this embodiment, the lower end of the base plate 1 is provided with a universal self-locking wheel 8, which facilitates the movement of the device according to usage requirements.

[0034] like Figure 1 and Figure 2 As shown, in this embodiment, the first driving mechanism 2 includes a cylinder 9 and a plurality of telescopic rods 10. The fixed end of the cylinder 9 is set on the base plate 1. The telescopic rods 10 of the cylinder 9 are connected to the lifting plate 3. The cylinder 9 is used to drive the lifting plate 3 to rise or fall. The telescopic rods 10 are set between the base plate 1 and the lifting plate 3. The telescopic rods 10 are used to improve the stability of the operation of the lifting plate 3.

[0035] like Figure 1 and Figure 2 As shown, in this embodiment, the second drive mechanism 4 includes a motor 11, a threaded rod 12, a slide rail 13, a slider 14, a mounting plate 15, and a limiting block 16. The mounting plate 15, the slide rail 13, and the limiting block 16 are all mounted on the mounting plate 15. The mounting plate 15 and the limiting block 16 are located at the two ends of the slide rail 13, respectively. The motor 11 is mounted on the mounting plate 15. The threaded rod 12 is rotatably mounted on the limiting block 16. The other end of the threaded rod 12 passes through the mounting plate 15 and is connected to the motor 11. The slider 14 is mounted on the slide rail 13 and is threadedly sleeved on the threaded rod 12. The locking mechanism 5 is mounted on the slider 14.

[0036] In use, the motor 11 drives the threaded rod 12 to rotate, causing the slider 14 to move on the slide rail 13. With the cooperation of the slide rail 13 and the slider 14, the smoothness of the operation of the locking mechanism 5 can be improved. The mounting plate 15 and the limit block 16 limit the slider 14.

[0037] like Figures 1-5 As shown, in this embodiment, the latching mechanism 5 includes a lower latching block 17, an upper latching block 18, and a connector 19. The lower latching block 17 is disposed on the slider 14. Both the lower latching block 17 and the upper latching block 18 are provided with latching grooves 20. The upper latching block 18 is detachably mounted on the lower latching block 17. The connector 19 is used to connect and fix the lower latching block 17 and the upper latching block 18.

[0038] In use, first place the collar 7 into the slot 20 on the lower locking block 17, then install the upper locking block 18 on the lower locking block 17, and use the connector 19 to fix the upper locking block 18 on the lower locking block 17. At this time, the collar 7 is fixed between the upper locking block 18 and the lower locking block 17, which makes it easy to pull out the sealing device body 6.

[0039] like Figures 1-5As shown, in this embodiment, the lower card block 17 is provided with two slots 21, the upper card block 18 is provided with two plugs 22, and the connector 19 is provided with two. By providing slots 21 and plugs 22, the stability of the connection between the upper card block 18 and the lower card block 17 is improved.

[0040] like Figures 1-5 As shown, in this embodiment, the connector 19 is a hand-tightened Torx head screw. The hand-tightened Torx head screw as the connector 19 can be easily tightened and loosened, thereby improving the convenience of use and work efficiency without the aid of external tools.

[0041] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for recovering high-pressure hydraulic fracturing sealing devices in coal mines, characterized in that: It includes a base plate, a first drive mechanism, a lifting plate, a second drive mechanism, and a locking mechanism. The first drive mechanism is disposed on the base plate and drives the lifting plate to rise or fall. The second drive mechanism is disposed on the lifting plate and drives the locking mechanism connected to it. The locking mechanism is used to lock the sealing device body.

2. The coal mine underground high-pressure hydraulic fracturing sealing device recovery device according to claim 1, characterized in that: The bottom end of the base plate is equipped with universal self-locking wheels.

3. The coal mine underground high-pressure hydraulic fracturing sealing device recovery device according to claim 1, characterized in that: The first driving mechanism includes a cylinder and a plurality of telescopic rods. The fixed end of the cylinder is disposed on the base plate, and the telescopic rod of the cylinder is connected to the lifting plate. The telescopic rod is disposed between the base plate and the lifting plate.

4. The coal mine underground high-pressure hydraulic fracturing sealing device recovery device according to claim 1, characterized in that: The second driving mechanism includes a motor, a threaded rod, a slide rail, a slider, a mounting plate, and a limiting block. The mounting plate, the slide rail, and the limiting block are all mounted on the mounting plate. The mounting plate and the limiting block are located at opposite ends of the slide rail. The motor is mounted on the mounting plate. The threaded rod is rotatably mounted on the limiting block. The other end of the threaded rod passes through the mounting plate and is connected to the motor. The slider is mounted on the slide rail and threadedly fitted onto the threaded rod. The locking mechanism is mounted on the slider.

5. A coal mine underground high-pressure hydraulic fracturing sealing device recovery device according to claim 4, characterized in that: The locking mechanism includes a lower locking block, an upper locking block, and a connector. The lower locking block is disposed on the slider. Both the lower locking block and the upper locking block are provided with locking slots. The upper locking block is detachably installed on the lower locking block. The connector is used to connect and fix the lower locking block and the upper locking block.

6. A coal mine underground high-pressure hydraulic fracturing sealing device recovery device according to claim 5, characterized in that: The lower card block has two slots, the upper card block has two inserts, and there are two connectors.

7. A coal mine underground high-pressure hydraulic fracturing sealing device recovery device according to claim 6, characterized in that: The connector is a hand-tightened Torx head screw.

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