A packer pushing device for coal mines

Abstract

The present invention provides a packer pushing device for coal mines, which belongs to the technical field of packer delivery tools. It comprises a mounting frame, an assembly cabin is mounted on the mounting frame, a fixed frame is fixedly connected to the outside of the assembly cabin, and a driving motor and an electric telescopic rod are sleeved inside the assembly cabin, the top and bottom of the assembly cabin are connected to a first movable frame through a guide tube, the fixed frame and the first movable frame are sleeved with conveying rollers, and the assembly cabin is symmetrically installed with an electric telescopic rod. The present invention provides an electric telescopic rod and a limit assembly as well as a guide tube and a first spring, so that the relative position between the fixed frame and the first movable frame in the entire device can be adaptively adjusted according to the size of the oil pipe, thereby improving the adaptability range of the device, and after adjustment, through the limit assembly, sufficient clamping force is provided for the oil pipe during the pushing process to ensure the overall pushing effect of the device on the packer.

Description

Technical Field

[0001] The invention relates to the technical field of packer delivery tools, in particular to a packer pushing device for coal mines. Background Art

[0002] In underground coal mine operations, packers are key equipment used to seal oil pipes or shafts. They are usually installed directly on the oil pipes and require a pushing device to deliver the oil pipes and packers to the target position to ensure the smooth sealing of the shaft or segmentation operations. At present, the industry generally uses roller-type conveying devices as the pushing mechanism of the packer. Its basic working principle is to drive one or more pairs of rollers to rotate through a motor, use the friction between the rollers and the oil pipes to clamp the oil pipes, and push the oil pipes and packers along the shaft under the rotation of the rollers.

[0003] However, this traditional roller conveying device has many technical defects in actual application, which affects the pushing efficiency and operation safety of the seal. First, the existing roller pushing device usually adopts a roller pair with a fixed spacing, and its clamping range is limited. When encountering oil pipes of different diameters, it is necessary to manually adjust the roller spacing or replace the roller assembly, which is not only cumbersome to operate, but also seriously affects the operation efficiency. Therefore, secondly, during the packer pushing process, when the motor starts or stops, the roller and the oil pipe are prone to instantaneous slippage due to inertia or load changes. Especially in deep wells or large-angle wells, the oil pipe has a large deadweight. If the clamping force of the roller cannot be applied quickly and stably, it is very easy to cause the seal positioning deviation, affecting the sealing effect. In severe cases, it may even cause underground accidents. Therefore, the present application provides a coal mine sealer pushing device to meet the needs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a packer pushing device for coal mines to solve the problems of small adaptation range of existing pushing devices and poor positioning effect after the packer is pushed into place.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod has a round shank to contact with said linking rod.

[0007] Optionally, the guide tube consists of an outer tube and an inner tube, the bottom end of the inner tube is fixedly connected to the top of the first movable frame, the top end of the outer tube is fixedly connected to the top of the assembly cabin, and a first spring surrounding the outside of the guide tube is fixedly connected between the assembly cabin and the top of the first movable frame, and the first movable frame is located directly above the fixed frame.

[0008] Optionally, the fixed frame and the first movable frame are movably connected to the conveying rollers through bearings. There are four conveying rollers in the fixed frame. Both ends of the two conveying rollers located on both sides are movably connected to the fixed frame through bearings, and one end of the two conveying rollers located in the middle is associated with the driving shaft of the driving motor.

[0009] Optionally, the driving motor is connected to the conveying roller via a speed reducer, the position of the conveying roller in the first movable frame corresponds to the positions of the two conveying rollers located in the middle of the fixed frame, and a brake is provided in the driving motor.

[0010] Optionally, the limiting assembly includes a pressure plate fixedly connected to the outer side of the slide seat, the end of the pressure plate extends to the outer side of the second movable frame, and the pressure plate is inclined downward, and a weakening groove is provided in the middle of the pressure plate.

[0011] Optionally, the adjustment assembly includes a servo motor fixedly connected to the bottom end of the second movable frame, a screw is movably connected to the second movable frame through a bearing, the screw is threadedly connected to the slide, and the bottom end of the screw is fixedly connected to the drive shaft of the servo motor.

[0012] Optionally, a pressure sensor is sleeved on the middle part of the end of the pressure plate, the pressure plate and the servo motor are electrically connected through a circuit, and a through hole that is adapted to the size of the circuit is opened on the pressure plate and the weakened groove.

[0013] Optionally, an insertion opening is provided in the middle of the top end of the first movable frame, the width of the insertion opening is adapted to the width of the pressure plate, the fixing opening is provided on a side of the first movable frame close to the second movable frame, and the conveying roller in the first movable frame extends to the outside of the first movable frame at one end close to the second movable frame and is fixedly connected to a locking head.

[0014] Optionally, the locking assembly includes side panels symmetrically installed on both sides of the sliding seat, the ends of the side panels extend toward the outside of the second movable frame and are fixedly connected to a locking seat, a locking sleeve is provided in the rotating sleeve of the locking seat, a guide surface is provided on the outside of the locking head, and a recess is provided in the locking sleeve that is adapted to the shape of the guide surface.

[0015] Optionally, the locking sleeve is fixedly connected to a limiting edge sleeved in the locking seat, the outside of the limiting edge is fixedly connected to a second spring and a plug-in strip, the end of the second spring is fixedly connected to an annular plate, and the locking seat is provided with an active cavity that is adapted to the shape of the limiting edge and the annular plate, and the locking seat is provided with a docking seat that is adapted to the size of the annular plate, and the docking seat is provided with docking grooves that are adapted to the shape of the plug-in strip and are evenly distributed.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, by setting an electric telescopic rod and a limit assembly, a guide tube and a first spring, the relative position between the fixed frame and the first movable frame in the entire device can be adaptively adjusted according to the size of the oil pipe, thereby improving the adaptability range of the device. After adjustment, the limit assembly can provide sufficient clamping force for the oil pipe during the pushing process to ensure the pushing effect of the entire device on the sealer.

[0018] By setting a limit assembly, an adjustment assembly and a pressure sensor, the relative position of the fixed frame and the first movable frame of the device can be adjusted according to the size of the oil pipe. The position of the limit assembly can also be adjusted accordingly by relying on the adjustment assembly, and the pressure sensor is used for real-time monitoring during the adjustment process. It can not only maintain the force of clamping the oil pipe to meet the pushing requirements, but also avoid causing damage to the oil pipe. At the same time, it can also detect abnormalities according to the pressure changes during the pushing process, so that the pushing process of the device is stable and reliable.

[0019] By setting an electric telescopic rod and a limit assembly as well as a second movable frame and a clamping block, the device can rely on the electric telescopic rod to drive the second movable frame to move in the assembly cabin. According to the different extension lengths of the electric telescopic rod, corresponding to different working states of the device, the electric telescopic rod only pushes the limit assembly to contact the first movable frame during the pushing process to meet the clamping limit requirements during the pushing process. After the sealer reaches the working position, it pushes the second movable frame to position the first movable frame, thereby ensuring the positioning and fixing effect of the device on the oil pipe and the sealer, and avoiding positioning deviation of the sealer.

[0020] By setting a locking component on the slide, the electric telescopic rod drives the second movable frame to position and fix the first movable frame. At the same time, the locking component on the slide also follows the displacement of the slide to synchronously lock the conveying roller in the first movable frame. After the first movable frame is fixed, the conveying roller inside it cannot rotate, and the rolling friction between the oil pipe and the conveying roller during the pushing process is converted into sliding friction, ensuring the position limitation effect of the oil pipe and the packer in the positioning state. At the same time, the synergy between the overall structure of the device is generated, relying on the extension length of the electric telescopic rod, to drive different structures to produce effects in the corresponding working state, making the technical solution of the entire device more complete.

[0021] By arranging the second spring, the plug-in strip and the docking groove, the locking sleeve can rotate during the docking with the locking head, thereby adapting to the locking head rotated to different states, allowing the locking sleeve to make corresponding rotation adjustments, and after the second movable frame positions and fixes the first movable frame, the plug-in strip is docked with the docking groove to simultaneously achieve the locking of the locking sleeve, the locking head and the conveying roller. The ingenious coordination between the structures can effectively solve the problem of the non-fixed rotation angle of the conveying roller and the locking head, and further improve the technical solution of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a packer pushing device for coal mines from a first-person perspective;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of a packer pushing device for coal mines from a second perspective;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the assembly cabin;

[0026] Figure 4 This is a schematic diagram of the coordinated structure of the first movable frame, the electric telescopic rod and the second movable frame;

[0027] Figure 5 for Figure 4 A in the middle is an enlarged structural diagram;

[0028] Figure 6 Schematic diagram of the three-dimensional structure of the first movable frame;

[0029] Figure 7 for Figure 6 The enlarged structural diagram at B in the middle;

[0030] Figure 8 Schematic diagram of the three-dimensional structure of the second movable frame;

[0031] Figure 9 Schematic diagram of the three-dimensional structure of the slide;

[0032] Figure 10 Schematic diagram of the matching structure of the locking sleeve, the second spring and the annular plate;

[0033] Figure 11 It is a schematic diagram of the cross-sectional structure of the locking seat.

[0034] Reference numerals:

[0035] 1. Mounting frame; 2. Assembly cabin; 3. Fixed frame; 4. First movable frame; 5. Guide tube; 6. Drive motor; 7. Reducer; 8. Conveyor roller; 9. Movable chamber; 10. First spring; 11. Electric telescopic rod; 12. Second movable frame; 13. Servo motor; 14. Screw; 15. Slide; 16. Block; 17. Pressure plate; 18. Weakened groove; 19. Pressure sensor; 20. Insertion port; 21. Fixed port; 22. Locking head; 23. Guide surface; 24. Side plate; 25. Locking seat; 26. Locking sleeve; 27. Limiting edge; 28. Second spring; 29. ​​Ring plate; 30. Connector strip; 31. Docking seat; 32. Docking groove.

[0036] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0037] The following describes in detail a packer pushing device for coal mines provided by the present invention, in conjunction with the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are optimal and preferred embodiments, and those skilled in the art may employ alternative implementations for known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0038] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0039] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0040] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0041] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0042] like Figures 1 to 11As shown, an embodiment of the present invention provides a packer pushing device for a coal mine, including a mounting frame 1, an assembly cabin 2 is mounted on the mounting frame 1, the outside of the assembly cabin 2 is fixedly connected to a fixing frame 3, and the interior of the assembly cabin 2 is provided with a driving motor 6 and an electric telescopic rod 11, the mounting frame 1 provides a space for installing and fixing the assembly cabin 2 and the structure associated with the assembly cabin 2, and the mounting frame 1 is also provided with an adjustment structure capable of adjusting the position of the assembly cabin 2, which is used to change the overall position of the assembly cabin 2 in the mounting frame 1 to adapt to work requirements in different environments. The above-mentioned mounting frame 1 and adjustment structure are both existing technologies, and their principles and usage processes are the same as those of the existing technologies, which will not be elaborated on here.

[0043] The top and bottom of the assembly cabin 2 are connected to the first movable frame 4 through a guide tube 5. The fixed frame 3 and the first movable frame 4 are both provided with conveying rollers 8. The position of the conveying roller 8 in the fixed frame 3 is fixed following the fixed frame 3, and the first movable frame 4 can be adaptively adjusted according to the size of the oil pipe, changing the distance between the conveying roller 8 in the fixed frame 3 and the conveying roller 8 in the first movable frame 4, so that the entire device can have a good clamping and pushing effect on oil pipes of different sizes, ensuring the overall adaptability of the device. An electric telescopic rod 11 is symmetrically installed in the assembly cabin 2, and the end of the drive shaft of the electric telescopic rod 11 is fixedly connected to the second movable frame 12. The outside of the second movable frame 12 is fixedly connected to a card block 16, and the second movable frame 12 is provided with a slide 15. The first movable frame 4 is provided with a card block 1 6, the shape of the fixing port 21 is adapted, the electric telescopic rod 11 can drive the second movable frame 12 as a whole to telescopically move inside the assembly cabin 2, and then drive the phase position between the second movable frame 12 and the first movable frame 4 to change. According to different working requirements, the position of the second movable frame 12 is changed, so that the device as a whole presents different working states to meet the needs of different stages in the process of pushing the packer. When the packer is pushed to the working position, the device as a whole needs to position and fix the oil pipe. At this time, the block 16 on the second movable frame 12 can be embedded in the fixing port 21 on the first movable frame 4 under the driving action of the electric telescopic rod 11, thereby further fixing the position of the first movable frame 4, ensuring that the clamping force on the oil pipe between the first movable frame 4 and the fixed frame 3 causes the positioning deviation of the packer;

[0044] The limiting component is used to press and limit the first movable frame 4 when pushing the oil pipe and the packer. The limiting component is connected to the slide 15. The setting of the limiting component corresponds to the pushing stage of the entire device, and can press and limit the first movable frame 4 as a whole to ensure the clamping and conveying effect of the fixed frame 3 and the conveying roller 8 in the first movable frame 4 on the oil pipe; the adjusting component is used to adjust the relative position between the limiting component and the second movable frame 12. The adjusting component is connected to the second movable frame 12. The setting of the adjusting component can adjust the position of the limiting component accordingly while the spacing between the fixed frame 3 and the first movable frame 4 changes with the size of the oil pipe. Adjust and maintain the pressure of the limit assembly so that the device can have a good clamping and conveying effect on oil pipes of different sizes, thereby ensuring the pushing effect of the sealer; the locking assembly is used to lock the conveying roller 8 in the first movable frame 4. The locking assembly is connected to the slide 15. The setting of the locking assembly can start working after the sealer is pushed to the working position by further pushing the electric telescopic rod 11, and then cooperate with the second movable frame 12 and the block 16 to fix the position of the first movable frame 4. At the same time, the conveying roller 8 in the first movable frame 4 is also locked synchronously, further ensuring the overall positioning and fixing effect of the device on the oil pipe and the sealer.

[0045] In this embodiment, if Figures 1 to 4 As shown, the guide tube 5 is composed of an outer tube and an inner tube. The bottom end of the inner tube is fixedly connected to the top of the first movable frame 4, and the top of the outer tube is fixedly connected to the top of the assembly cabin 2. A first spring 10 surrounding the outside of the guide tube 5 is fixedly connected between the assembly cabin 2 and the top of the first movable frame 4. The first movable frame 4 is located directly above the fixed frame 3. The fixed frame 3 and the first movable frame 4 are movably connected to the conveying roller 8 through bearings. There are four conveying rollers 8 in the fixed frame 3. Both ends of the two conveying rollers 8 on both sides are movably connected to the fixed frame 3 through bearings. One end of the two conveying rollers 8 in the middle is associated with the drive shaft of the drive motor 6. The inner tube of the guide tube 5 The structural design of the outer tube can provide guidance for the lifting and lowering activities of the first movable frame 4 below the top of the assembly cabin 2, limit the range of movement of the first movable frame 4, ensure that the position of the conveying roller 8 in the first movable frame 4 corresponds to the position of the two conveying rollers 8 in the middle of the fixed frame 3, and can provide stable support and limiting effects for the oil pipe passing through between the fixed frame 3 and the first movable frame 4. The bearings between the conveying roller 8 and the fixed frame 3 and the first movable frame 4 can ensure the rotation ability of the conveying roller 8. After the conveying roller 8 cooperates with the fixed frame 3 and the first movable frame 4 to clamp the oil pipe, it can push the oil pipe to move through its own rotation and the friction between it and the outside of the oil pipe, thereby realizing the pushing operation of the seal on the oil pipe.

[0046] The drive motor 6 is connected to the conveying roller 8 via a reducer 7. The position of the conveying roller 8 in the first movable frame 4 corresponds to the position of the two conveying rollers 8 located in the middle of the fixed frame 3. The drive motor 6 is provided with a brake. The drive motor 6 is used to drive the two conveying rollers 8 in the middle of the fixed frame 3 to rotate, thereby driving the entire device to convey the oil pipe and the packer. The reducer 7 is set to limit the speed of the drive shaft of the drive motor 6 to prevent the conveying rollers 8 associated with the drive motor 6 from rotating too fast, which would cause slippage between the conveying rollers 8 and the oil pipe. The brake provided in the drive motor 6 can stop the drive motor 6 from working. That is, after the packer is pushed to the specified working position, the drive motor 6 will no longer work. Under the influence of its brake structure, the two conveying rollers 8 associated with it are also locked. At the same time, the conveying rollers 8 in the first movable frame 4 are also locked by the corresponding locking device. The four conveying rollers 8 that clamp the oil pipe are all locked. Only sliding friction exists between them and the oil pipe, and no rolling friction will continue to be generated. Therefore, the oil pipe and packer can be effectively positioned and fixed, ensuring the stability of the packer during operation.

[0047] In this embodiment, if Figures 1 to 8 As shown, the limiting assembly includes a pressure plate 17 fixedly connected to the outside of the slide 15, the end of the pressure plate 17 extends to the outside of the second movable frame 12, and the pressure plate 17 is inclined downward, and a weakening groove 18 is provided in the middle of the pressure plate 17. The setting of the weakening groove 18 makes the pressure plate 17 thinner and weaker at the weakening groove 18, and is more likely to be deformed when subjected to external force. When the pressure plate 17 is subjected to a reaction force exceeding the range, it can deform and avoid at the weakening groove 18, thereby preventing the pressure plate 17 from causing damage to the oil pipe during the clamping and limiting process. An insertion port 20 is provided in the middle of the top of the first movable frame 4, and the width of the insertion port 20 is adapted to the width of the pressure plate 17. A fixed port 21 is provided on a side of the first movable frame 4 close to the second movable frame 12, and the conveying roller 8 in the first movable frame 4 extends close to one end of the second movable frame 12. It extends to the outside of the first movable frame 4 and is fixedly connected with a locking head 22. When the device as a whole needs to push the oil pipe and the packer, the electric telescopic rod 11 drives and pushes the second movable frame 12 together with the limit assembly as a whole to the working position. The end of the pressure plate 17 is inserted from the insertion port 20 and squeezes the top of the first movable frame 4, thereby realizing the pressure limit of the first movable frame 4, avoiding the pressure generated by the conveying roller 8 in the first movable frame 4 on the oil pipe due to the change in the size of the oil pipe. The position of the limit assembly can be movably adjusted by the action of the adjustment assembly, and the pressure applied by the limit assembly is indirectly adjusted, which cooperates with the elastic force of the first spring 10 to form a clamping force on the oil pipe, so that the conveying roller 8 on the first movable frame 4 can stably apply sufficient clamping force on the oil pipe, thereby ensuring the stability of the conveying process.

[0048] The adjusting assembly includes a servo motor 13 fixedly connected to the bottom end of the second movable frame 12, a screw 14 is movably connected to the second movable frame 12 through a bearing, the screw 14 is threadedly connected to the slide 15, and the bottom end of the screw 14 is fixedly connected to the drive shaft of the servo motor 13. When the servo motor 13 is working, it can drive the screw 14 in the second movable frame 12 to rotate through its drive shaft, and then push the slide 15 to move up and down in the second movable frame 12 through the thread on the outside of the screw 14, thereby changing the relationship between the slide 15, the limit assembly and the locking assembly and the second movable frame 12. The relative position between them allows the related structures outside the slide 15 to follow the size changes of the oil pipe, and to produce adaptive adjustments without affecting the working effect. A pressure sensor 19 is provided at the middle part of the end of the pressure plate 17. The pressure plate 17 and the servo motor 13 are electrically connected through a circuit. A through hole adapted to the size of the circuit is provided on the pressure plate 17 and the weakening groove 18. The setting of the pressure sensor 19 can monitor the reaction force exerted on the pressure plate 17 as a whole, and then monitor the pressure exerted on the pressure plate 17 during the transportation process, so as to avoid damage to the oil pipe. Excessive squeezing causes damage to the oil pipe, and the abnormality of the oil pipe and the packer during transportation can be judged by the change of pressure, and timely response can be made. The setting of the adjustment component can change the relative position between the limit component and the second movable frame 12, so that the relative position of the first movable frame 4 and the fixed frame 3 is affected by the size of the oil pipe and changes. At the same time, the position of the limit component is also adjusted accordingly to ensure the initial limiting effect of the limit component on the first movable frame 4. Secondly, in the positioning stage of the packer, the adjustment component can also adjust the position of the slide 15 and the limit component. The position of the second movable frame 12 is adjusted to increase the pressure on the first movable frame 4, indirectly increasing the pressure of the conveying rollers 8 in the first movable frame 4 on the oil pipe, but controlling it within a range that will not cause damage. At the same time, the clamping block 16 on the second movable frame 12 can correspond to the position of the fixing port 21 on the first movable frame 4. The electric telescopic rod 11 is further pushed to achieve the docking of the clamping block 16 and the fixing port 21. After ensuring that the conveying rollers 8 in the first movable frame 4 stably clamp the oil pipe, the position of the first movable frame 4 is locked, providing a stable and reliable foundation for the positioning and fixation of the oil pipe and the packer.

[0049] In this embodiment, if Figures 8 to 11As shown, the locking assembly includes side plates 24 symmetrically installed on both sides of the slide 15. The ends of the side plates 24 extend to the outside of the second movable frame 12 and are fixedly connected to the locking seat 25. A locking sleeve 26 is rotatably sleeved in the locking seat 25. A guide surface 23 is provided on the outside of the locking head 22. A notch is provided in the locking sleeve 26 that matches the shape of the guide surface 23. The notch of the locking sleeve 26 matches the outer shape of the locking head 22, so that the locking sleeve 26 is sleeved on the outside of the locking head 22 and automatically After the body is locked, the conveying roller 8 in the first movable frame 4 can be locked by the locking head 22, so that the conveying roller 8 cannot rotate, further ensuring the clamping and positioning effect of the conveying roller 8 in the first movable frame 4 on the oil pipe. The locking sleeve 26 is fixedly connected to a limiting edge 27 set in the locking seat 25. The outside of the limiting edge 27 is fixedly connected to the second spring 28 and the plug-in strip 30. The end of the second spring 28 is fixedly connected to the annular plate 29. The locking seat 25 is provided with a The shape of the movable cavity 9 is adapted to that of 29, and the locking seat 25 is provided with a docking seat 31 adapted to the size of the annular plate 29. The opening of the movable cavity 9 can ensure that there is sufficient movable space between the locking sleeve 26 and the locking seat 25, and cooperates with the limiting edge 27 to limit the movable range of the locking sleeve 26 to prevent the locking sleeve 26 from detaching from the locking seat 25. The docking seat 31 is provided with docking grooves 32 that are adapted to the shape of the plug-in strip 30 and are evenly distributed. The design of the locking component can enable the device as a whole to be in the packer positioning state. In addition to being able to position and fix the first movable frame 4, it can also synchronously lock the conveying roller 8 in the first movable frame 4, thereby preventing the conveying roller 8 in the first movable frame 4 from rotating. Combined with the brake structure in the drive motor 6, it is ensured that when the packer is in the positioning state, the conveying roller 8 conveying the oil pipe and the packer is in a locked state, so that the conveying roller 8 cannot rotate, and there is no rolling friction between the conveying roller 8 and the oil pipe, thereby ensuring the positioning and fixing effect of the oil pipe and the packer.

[0050] The second spring 28 and the annular plate 29 are provided to limit the relative position relationship between the locking sleeve 26 and the locking head 22. Before the locking sleeve 26 does not contact the locking head 22, the locking sleeve 26 is kept in a protruding state from the locking seat 25 under the action of the elastic force of the second spring 28. In this state, the plug-in bar 30 on the limiting edge 27 and the docking groove 32 on the docking seat 31 are separated from each other, and the locking sleeve 26 is not limited by the plug-in bar 30 and the docking groove 32 and can rotate in the locking seat 25. Therefore, in the process of the second movable frame 12 driving the slide 15 and the locking assembly to the outside of the first movable frame 4, after the inner side wall of the locking sleeve 26 contacts the outer side of the locking head 22, it will be squeezed by the external guide surface 23 of the locking head 22, and under the action of the squeezing force, the locking sleeve 26 rotates inside the locking seat 25 to an angle adapted to the locking head 22, thereby realizing the socketing between the locking sleeve 26 and the locking head 22. The position of the locking sleeve 26 can be adaptively adjusted to any angle to which the fixed head 22 rotates following the conveying roller 8. In the process of inserting the block 16 on the second movable frame 12 into the fixed opening 21 outside the first movable frame 4, the locking head 22 further squeezes the locking sleeve 26, causing the locking sleeve 26 to shrink toward the locking seat 25, and drives the plug-in strip 30 on the limiting edge 27 to embed into the docking groove 32 on the docking seat 31, thereby achieving synchronous locking of the locking sleeve 26 and the locking head 22. Therefore, when the first movable frame 4 is locked by the second movable frame 12 and the block 16, the conveying roller 8 in the first movable frame 4 is synchronously locked. When the first movable frame 4 is fixed, the conveying roller 8 in the first movable frame 4 can no longer rotate, ensuring that the conveying roller 8 used to push the oil pipe can cooperate with the fixed frame 3 and the first movable frame 4 after the packer reaches the working position, thereby providing a good positioning and fixing effect for the oil pipe and the packer.

[0051] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A packer pushing device for coal mines, characterized in that: The utility model comprises a mounting frame, wherein an assembly cabin is mounted on the mounting frame, the outside of the assembly cabin is fixedly connected to a fixed frame, and a driving motor and an electric telescopic rod are sleeved inside the assembly cabin, the top and bottom of the assembly cabin are connected to a first movable frame through a guide tube, the fixed frame and the first movable frame are sleeved with a conveying roller, the electric telescopic rod is symmetrically mounted in the assembly cabin, the end of the driving shaft of the electric telescopic rod is fixedly connected to the second movable frame, the outside of the second movable frame is fixedly connected to a clamping block, and the second movable frame is sleeved with a sliding seat, and the first movable frame is provided with a fixing opening adapted to the shape of the clamping block; A limiting assembly, used for pressing and limiting the first movable frame when pushing the oil pipe and the packer, wherein the limiting assembly is connected to the slide seat; an adjusting assembly, used for adjusting the relative position between the limiting assembly and the second movable frame, the adjusting assembly being connected to the second movable frame; A locking assembly, used for locking the conveying roller in the first movable frame, wherein the locking assembly is connected to the slide; The limiting assembly includes a pressure plate fixedly connected to the outside of the slide, the end of the pressure plate extends to the outside of the second movable frame, and the pressure plate is inclined downward. A weakening groove is provided in the middle of the pressure plate, and the thickness of the pressure plate at the weakening groove is less than the thickness of other external areas thereof.

2. The packer pushing device for coal mines according to claim 1, characterized in that: The guide tube consists of an outer tube and an inner tube. The bottom end of the inner tube is fixedly connected to the top of the first movable frame, and the top end of the outer tube is fixedly connected to the top end of the assembly cabin. A first spring surrounding the outside of the guide tube is fixedly connected between the assembly cabin and the top of the first movable frame. The first movable frame is located directly above the fixed frame.

3. The packer pushing device for coal mines according to claim 1, characterized in that: The fixed frame and the first movable frame are movably connected to the conveying rollers through bearings. There are four conveying rollers in the fixed frame. Both ends of the two conveying rollers located on both sides are movably connected to the fixed frame through bearings, and one end of the two conveying rollers located in the middle is associated with the driving shaft of the driving motor.

4. The packer pushing device for coal mines according to claim 1, characterized in that: The driving motor is connected to the conveying roller via a speed reducer. The position of the conveying roller in the first movable frame corresponds to the position of the two conveying rollers located in the middle of the fixed frame. The driving motor is provided with a brake.

5. The packer pushing device for coal mines according to claim 1, characterized in that: The adjustment assembly includes a servo motor fixedly connected to the bottom end of the second movable frame, a screw rod is movably connected to the second movable frame through a bearing, the screw rod is threadedly connected to the slide seat, and the bottom end of the screw rod is fixedly connected to the drive shaft of the servo motor.

6. The packer pushing device for coal mines according to claim 5, characterized in that: A pressure sensor is sleeved on the middle part of the end of the pressure plate, the pressure plate and the servo motor are electrically connected through a circuit, and a through hole that is adapted to the size of the circuit is opened on the pressure plate and the weakened groove.

7. The packer pushing device for coal mines according to claim 6, characterized in that: An insertion opening is provided in the middle of the top end of the first movable frame, and the width of the insertion opening is adapted to the width of the pressure plate. The fixing opening is provided on a side of the first movable frame close to the second movable frame. One end of the conveying roller in the first movable frame close to the second movable frame extends to the outside of the first movable frame and is fixedly connected to a locking head.

8. The packer pushing device for coal mines according to claim 7, characterized in that: The locking assembly includes side plates symmetrically installed on both sides of the slide, the ends of the side plates extend toward the outside of the second movable frame and are fixedly connected to a locking seat, a locking sleeve is rotatably provided in the locking seat, a guide surface is provided on the outside of the locking head, and a recess is provided in the locking sleeve that matches the shape of the guide surface.

9. The packer pushing device for coal mines according to claim 8, characterized in that: The locking sleeve is fixedly connected to a limiting edge sleeved in the locking seat, the outside of the limiting edge is fixedly connected to a second spring and a plug-in strip, the end of the second spring is fixedly connected to a ring plate, and the locking seat is provided with an active cavity that is adapted to the shape of the limiting edge and the ring plate, and the locking seat is provided with a docking seat that is adapted to the size of the ring plate, and the docking seat is provided with docking grooves that are adapted to the shape of the plug-in strip and are evenly distributed.

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