A device for removing blockage in a shaft without people

Abstract

The present application relates to the technical field of slag excavation and blockage removal equipment, in particular to an unmanned vertical shaft slag excavation and blockage removal device, comprising: a slag excavation rack capable of moving along the axial direction of a blocked shaft and used for connecting a pulling device; a slag excavation mechanism installed on the slag excavation rack and comprising a slag excavation assembly and a linear drive assembly, the linear drive assembly being installed on the slag excavation rack and used for driving the slag excavation assembly to slide along the length direction of the slag excavation rack, the slag excavation assembly being capable of excavating slag soil of a blockage body; and a slag storage mechanism arranged at the lower end of the slag excavation rack and provided with a slag storage cylinder and a rotary drive assembly, the slag storage cylinder being closed at the lower end, open at the upper end, and provided with a slag excavation channel in the inner cavity, the slag excavation channel being arranged through the slag storage cylinder, separated from the inner cavity of the slag storage cylinder, and capable of allowing the slag excavation assembly to pass through, and the rotary drive assembly being used for driving the slag storage cylinder to rotate along the axis thereof. The present application can automatically excavate slag and remove blockages, and realize unmanned blockage removal in a shaft.

Description

Technical Field

[0001] This invention relates to the field of slag removal and blockage clearing equipment, specifically to an unmanned shaft slag removal and blockage clearing device. Background Technology

[0002] Shaft blockage (hereinafter referred to as "blockage") is a common accident during the construction of inclined or vertical shafts in mining, water conservancy, transportation, and urban underground space development. Blockage is mostly caused by factors such as the collapse of the surrounding rock of the shaft wall, arching after blasting, dense accumulation of slag and soil obstruction, or backflow of mud and sand caused by groundwater intrusion. In mild cases, it blocks the transportation channel, and in severe cases, it leads to the complete blockage of the entire shaft, seriously affecting the construction progress and operational safety.

[0003] Currently, in engineering practice, the common method for clearing blocked wells is the forward excavation method (i.e., clearing layer by layer from top to bottom or bottom to top). The typical workflow is as follows: workers first enter the blocked area with simple tools (such as pneumatic picks and crowbars), manually break and disturb the blockage, and load the broken material into small transport cars located inside the well shaft. Once the cars are loaded, they are pulled by a winch or hoist located at the wellhead using steel cables. To ensure worker safety during the traction operation, the conventional practice is to first lift the workers out of the well using the same or a separate hoisting system, and then lift the car full of material; or, under certain conditions, workers are allowed to be lifted out of the well along with the fully loaded car.

[0004] However, the existing methods for clearing blockages have the following drawbacks in practical applications:

[0005] First, the workers endured extremely high labor intensity and worked in harsh environments.

[0006] Because the blockage is mostly a mixture of irregular rock blocks and mud, with high density and interlocking, manual crushing and loading operations rely entirely on physical labor, resulting in low efficiency. Furthermore, the confined underground space, poor ventilation, and high concentrations of dust and harmful gases pose serious health risks to workers during prolonged periods of high-intensity work.

[0007] Second, the working face (i.e. the exposed surface of the blockage) has extremely poor stability, resulting in persistently high safety risks.

[0008] The blockage itself is in an unstable equilibrium state, and is highly susceptible to secondary collapse or slippage under artificial disturbance or mechanical vibration, posing a direct threat of burial to underground workers. In addition, during the hoisting process of pulling the mine car, the instantaneous impact load of the wire rope may cause the rope to break, the car to slip, or the mine car to derail. If personnel and the mine car are hoisted at the same time, there is no escape space for personnel in the event of a hoisting failure; if personnel exit the mine before the mine car, they need to repeatedly go up and down the mine, increasing the frequency of personnel exposure and the risk of falling in the narrow shaft.

[0009] Third, the lengthy clearing operation period severely restricts the overall progress of the project.

[0010] Due to the limited efficiency of manual loading, and the need to interrupt operations for personnel or material lifting after each loading, coupled with the requirement for workers to take regular breaks to recover their strength, the effective working time is extremely low. The repeated "loading-lifting-returning" cycle often makes a single well blockage clearing take several hours or even days, greatly delaying the normal connection of subsequent tunneling or lining processes and increasing project management costs.

[0011] Therefore, there is an urgent need for a slag removal and blockage clearing device that can separate personnel from the work area, reduce labor intensity, improve blockage clearing efficiency, and ensure the safety of the operation process. Summary of the Invention

[0012] To address the technical problems associated with manual slag removal and blockage clearing in shafts, this invention provides an unmanned shaft slag removal and blockage clearing device. This device can automatically remove slag and blockages from the blocked body, achieving unmanned blockage clearing downhole without the need for personnel to go down into the well. This improves worker safety, reduces labor intensity, and increases blockage clearing efficiency.

[0013] This invention is achieved through the following technical solution:

[0014] This invention provides an unmanned wellhead slag removal and unblocking device, comprising: a slag removal frame, movable along the axial direction of the blocked well, for connecting a traction device; a slag removal mechanism, mounted on the slag removal frame, including a slag removal component and a linear drive component, the linear drive component being mounted on the slag removal frame and used to drive the slag removal component to slide along the length direction of the slag removal frame, the slag removal component being able to remove slag from the blockage; and a slag storage mechanism, located at the lower end of the slag removal frame, comprising a slag storage cylinder and a rotary drive component, the slag storage cylinder being closed at the lower end and open at the upper end, with a slag removal channel in its inner cavity, the slag removal channel penetrating the slag storage cylinder, separated from the inner cavity of the slag storage cylinder, and allowing the slag removal component to pass through, the rotary drive component being used to drive the slag storage cylinder to rotate along its own axis; wherein, driven by the linear drive component, the slag removal component can move to the lower end of the slag removal channel and move above the open end of the slag storage cylinder.

[0015] In an optional embodiment of this application, multiple sets of movable rollers are provided at intervals on the lower side of the slag excavator frame.

[0016] In an optional embodiment of this application, the slag excavator frame is provided with connecting lugs, which are used to connect to traction equipment.

[0017] In an optional embodiment of this application, the upper end of the slag dredging frame is a cylindrical structure; the linear drive assembly is installed inside the upper end of the slag dredging frame, and the slag dredging assembly can be moved into the upper end of the slag dredging frame.

[0018] In an optional embodiment of this application, the lower end of the slag dredging frame is a circular frame, and the slag storage cylinder is installed inside the lower end of the slag dredging frame and slides in contact with the inner arm of the lower end of the slag dredging frame.

[0019] In an optional embodiment of this application, a limiting ring is provided at the lower end of the slag dredging frame, and a limiting shoulder adapted to the limiting ring is provided on the side wall of the slag storage cylinder.

[0020] In an optional embodiment of this application, a slide rail is provided inside the slag dredging frame, and the slide rail extends along the length direction of the slag dredging frame; the slag dredging mechanism further includes a ram, the ram being slidably engaged with the slide rail, and the moving end of the linear drive component being fixedly connected to the ram; the moving end of the linear drive component is fixedly connected to the ram, and the slag dredging component is mounted on the ram.

[0021] In an optional embodiment of this application, the slag removal assembly includes: a first hydraulic cylinder, one end of which is hinged to the slide block; a first bucket, the bottom of which is hinged to the other end of the first hydraulic cylinder; a second hydraulic cylinder, one end of which is hinged to the slide block; and a second bucket, the bottom of which is hinged to the other end of the second hydraulic cylinder, and the inner side of which is hinged to the inner side of the first bucket; wherein, when the first hydraulic cylinder and the second hydraulic cylinder are extended, the first bucket and the second bucket can be brought closer together and closed.

[0022] In an optional embodiment of this application, the rotary drive assembly includes: a rotary driver mounted on the slag excavator frame and adapted with a drive gear; and a driven gear ring mounted on the open end of the slag storage cylinder, coaxially arranged with the slag storage cylinder, and meshing with the drive gear.

[0023] In an optional embodiment of this application, an arc-shaped slag scraper is provided at the bottom of the slag storage cylinder.

[0024] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0025] 1. The unmanned well cutting and unblocking device provided by the present invention includes a cutting frame, a cutting mechanism, and a cutting storage mechanism. The cutting mechanism is installed on the cutting frame and includes a cutting component and a linear drive component. The linear drive component is used to drive the cutting component to slide along the length direction of the cutting frame. The cutting storage mechanism is located at the lower end of the cutting frame and is equipped with a cutting cylinder and a rotary drive component. The lower end of the cutting cylinder is closed and the upper end is open. The inner cavity is provided with a cutting channel. The cutting channel is set through the cutting cylinder, separated from the inner cavity of the cutting cylinder, and can allow the cutting component to pass through. The rotary drive component is used to drive the cutting cylinder to rotate along its own axis. During operation, the cutting frame is lowered onto the blockage body of the blocked well by a traction device. Then, the linear drive component drives the cutting component to extend through the cutting channel to cut the cutting, thereby realizing automatic cutting and unmanned unblocking in the well. Personnel do not need to go down into the well, thereby improving the safety of workers and reducing labor intensity.

[0026] 2. The unmanned shaft slag removal and unblocking device provided by the present invention, after the slag removal component completes a single slag removal action, drives the slag removal component to move back to above the open end of the slag storage cylinder through a linear drive component, and drives the slag storage cylinder to rotate through a rotary drive component, so that the slag storage cavity of the storage cylinder is located below the slag removal component. Then the slag removal component unloads the material, temporarily storing the slag removed in the slag storage cylinder. Then the rotary drive component drives the slag storage cylinder to reset for the next slag removal action. When the slag in the slag storage cylinder is stored to a set amount, the slag removal frame is lifted by a traction device to move the slag storage cylinder out of the blocked shaft for unloading. This realizes single lowering and multiple slag removal, which can reduce the number of times the slag removal frame is lowered and lifted, thereby greatly improving the unblocking efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] In the attached diagram:

[0029] Figure 1 This is a schematic cross-sectional view of the slag removal mechanism of the unmanned shaft slag removal and blockage removal device provided in an embodiment of the present invention after it has been retracted.

[0030] Figure 2 This is a schematic cross-sectional view of the slag removal mechanism of the unmanned shaft slag removal and blockage removal device provided in an embodiment of the present invention.

[0031] Figure 3 for Figure 1 A schematic diagram of the structure along direction A;

[0032] Figure 4 for Figure 1 A schematic diagram of the BB surface structure;

[0033] Figure 5 for Figure 1 A schematic diagram of the C-plane structure;

[0034] Figure 6 for Figure 1 A magnified structural diagram of part E;

[0035] Figure 7 for Figure 1 A schematic diagram of the DD surface structure;

[0036] Figure 8 This is a structural schematic diagram of the slag removal process of the unmanned shaft slag removal and blockage removal device provided in an embodiment of the present invention;

[0037] Figure 9 This is a structural schematic diagram of the unloading process of the slag removal component of the unmanned shaft slag removal and blockage removal device provided in an embodiment of the present invention;

[0038] Figure 10 This is a structural schematic diagram of the unloading process of the slag storage cylinder of the unmanned shaft slag removal and blockage clearing device provided in an embodiment of the present invention.

[0039] The attached figures include reference numerals and their corresponding component names:

[0040] 10-Slag excavator frame, 11-Moving roller, 12-Connecting lifting lug, 13-Upper cylinder, 14-Lower mounting frame, 15-Limit retaining ring, 16-Slide rail, 17-Hydraulic pump station, 18-Controller;

[0041] 20 - Blocked well, 21 - Blocked body;

[0042] 30 - Traction equipment; 31 - Traction frame;

[0043] 40-Slag removal mechanism, 41-Slag removal assembly, 41a-First hydraulic cylinder, 41b-First bucket, 41c-Second hydraulic cylinder, 41d-Second bucket, 42-Linear drive assembly, 43-Roller;

[0044] 50-Slag storage mechanism, 51-Slag storage cylinder, 51a-Slag excavation channel, 51b-Limiting shoulder, 51c-Arc-shaped slag scraper, 51d-Unloading hopper door, 52-Rotary drive assembly, 52a-Rotary driver, 52b-Drive gear, 52c-Driven gear ring, 53-Divider cylinder;

[0045] 60 - Slag truck. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0049] In the description of the embodiments of this application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0050] In the description of this application, 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 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.

[0051] Example

[0052] Combination Figure 1 and Figure 2This embodiment provides an unmanned wellhead slag removal and unblocking device, including: a slag removal frame 10, which can move axially along the blocked well 20 and is used to connect a traction device 30; a slag removal mechanism 40, installed on the slag removal frame 10, including a slag removal component 41 and a linear drive component 42, the linear drive component 42 being installed on the slag removal frame 10 and used to drive the slag removal component 41 to slide along the length direction of the slag removal frame 10, the slag removal component 41 being able to remove the slag from the blockage body 21; and a slag storage mechanism 50, disposed at the lower end of the slag removal frame 10. The system includes a slag storage cylinder 51 and a rotary drive assembly 52. ​​The slag storage cylinder 51 is closed at the lower end and open at the upper end. The inner cavity is provided with a slag removal channel 51a. The slag removal channel 51a is provided through the slag storage cylinder 51, separated from the inner cavity of the slag storage cylinder 51, and allows the slag removal assembly 41 to pass through. The rotary drive assembly 52 is used to drive the slag storage cylinder 51 to rotate along its own axis. Under the drive of the linear drive assembly 42, the slag removal assembly 41 can move to the lower end of the slag removal channel 51a and move above the open end of the slag storage cylinder 51.

[0053] Understandably, the dredging frame 10 is typically equipped with movable rollers 11 to facilitate automatic descent along the inclined shaft wall under the traction of the pulling equipment 30, eliminating the need for additional installation tracks and thus shortening construction preparation time. In this embodiment, multiple sets of movable rollers 11 are spaced apart on the lower side of the dredging frame 10, such as four sets of three rollers each, totaling twelve single rollers, to support the dredging equipment as it moves within the chute.

[0054] To facilitate the connection between the slag excavator frame 10 and the traction equipment 30, the slag excavator frame 10 is provided with a connecting lug 12, which is used to connect the traction equipment 30. It is understood that the connecting lug 12 serves as the leverage point for the traction equipment 30. During position adjustment, upward material transport, or downward operation, the traction equipment 30 (generally a winch or hoist) pulls the slag excavator frame 10 through the lug.

[0055] Combination Figure 3 and Figure 4 The upper end of the slag dredging frame 10 is a cylindrical structure. For example, an upper cylindrical body 13 can be welded and fixed to the frame, thus forming the upper structural body of the slag dredging frame 10 and serving as the operating channel for the slag dredging assembly 41. This ensures sufficient structural strength at the upper end of the slag dredging frame 10 while providing retraction space for the slag dredging assembly 41. The linear drive assembly 42 is installed inside the upper end of the slag dredging frame 10, and the slag dredging assembly 41 can move into the upper end of the slag dredging frame 10.

[0056] Combined again Figure 1The slag dredging frame 10 is provided with a slide rail 16, which extends along the length of the slag dredging frame 10. The slag dredging mechanism 40 also includes a slide ram 43, which slides in cooperation with the slide rail 16. The moving end of the linear drive component 42 is fixedly connected to the slide ram 43. The slag dredging component 41 is mounted on the slide ram 43. Thus, by moving the slide ram 43 along the upper end of the slag dredging frame 10 and the slide rail 16, the slag dredging component 41 can descend to the slag grabbing station and ascend to the slag unloading station.

[0057] For the linear drive assembly 42, it only needs to be able to drive the slag-collecting assembly 41 to move back and forth between the slag-grabbing station and the slag-unloading station. It can be a gear and rack mechanism, a sprocket mechanism, a lead screw and slider mechanism, etc. In this embodiment, a hydraulic cylinder (stroke cylinder) is used to ensure that it can output sufficient output torque. Furthermore, a two-stage cylinder is used as the linear drive assembly 42. The staged cylinder has a small size and a large stroke, which can significantly reduce the length of the entire device.

[0058] Combined again Figure 2 The slag removal assembly 41 includes: a first hydraulic cylinder 41a, one end of which is hinged to the slide ram 43; a first bucket 41b, the bottom of which is hinged to the other end of the first hydraulic cylinder 41a; a second hydraulic cylinder 41c, one end of which is hinged to the slide ram 43; and a second bucket 41d, the bottom of which is hinged to the other end of the second hydraulic cylinder 41c, and the inner side of which is hinged to the inner side of the first bucket 41b; wherein, when the first hydraulic cylinder 41a and the second hydraulic cylinder 41c are extended, the first bucket 41b and the second bucket 41d can be brought closer together and closed.

[0059] In other words, the slag-removing assembly 41 used in this embodiment is an openable hydraulic grab bucket, and three hydraulic cylinders are installed on the slide block 43: one is a stroke cylinder, and the other two are drive cylinders for the grab bucket (first cylinder 41a and second cylinder 41c). Of course, the slag-removing assembly 41 can also be a spiral feeding pipe, as long as it can temporarily store slag while slag is being removed.

[0060] Combination Figure 1 and Figure 5 The lower end of the slag dredging frame 10 is a circular frame. A circular steel lower mounting frame 14 is welded and fixed to the frame. At the same time, the lower mounting frame 14 is welded and fixed to the upper cylinder 13, thus forming the entire slag dredging frame 10. The slag storage cylinder 51 is installed inside the lower end of the slag dredging frame 10 and slides in contact with the inner arm of the lower end of the slag dredging frame 10.

[0061] Combination Figure 6A limiting ring 15 is provided at the lower end of the slag excavator frame 10, and a limiting shoulder 51b adapted to the limiting ring 15 is provided on the side wall of the slag storage cylinder 51. In this embodiment, a support block is welded to the side wall of the slag storage cylinder 51 to form the limiting shoulder 51b, which forms a sliding fit mechanism with the limiting ring 15 on the lower mounting frame 14, and forms a rotational friction pair with the slag storage cylinder 51, so that the slag storage cylinder 51 can rotate around its own axis while providing axial limiting.

[0062] The rotary drive assembly 52 includes: a rotary driver 52a, mounted on the slag excavator frame 10 and fitted with a drive gear 52b; and a driven gear ring 52c, mounted on the open end of the slag storage cylinder 51 (usually fixed by bolts), coaxially arranged with the slag storage cylinder 51, and meshing with the drive gear 52b. Thus, the drive gear 52b drives the driven gear to rotate around its own axis, thereby driving the slag storage cylinder 51 to rotate around its own axis, ensuring reliable torque transmission. Alternatively, a friction wheel transmission structure can be used to drive the slag storage cylinder 51 to rotate. In this embodiment, a hydraulic motor is used as the rotary driver 52a. The output shaft of the hydraulic motor is connected to the drive gear 52b via a key, allowing the rotary driver 52a to have sufficient output torque while maintaining a low rotational speed. This simplifies the structure and improves the reliability of the device, eliminating the need for a reduction gear mechanism.

[0063] Combination Figure 5 and Figure 7 To facilitate the separation of the slag storage cavity of the slag storage cylinder 51 from the slag excavation channel 51a, a partition cylinder 53 is fixed inside the slag storage cylinder 51. For example, a cylinder with openings at both ends is welded to the side wall of the slag storage cylinder 51, and the lower end of the partition cylinder 53 penetrates through the lower end of the slag storage cylinder 51. Thus, the rotation of the slag storage cylinder 51 has two stroke positions, namely the slag storage position and the channel position. When the slag storage cylinder 51 rotates to the slag storage position, the partition cylinder 53 moves out of the moving path of the slag excavation assembly 41, and the slag storage cavity of the slag storage cylinder 51 faces directly below the slag excavation assembly 41.

[0064] based on Figure 7 In other words, the slag storage cylinder 51 has two rotation positions. One position is the channel position, that is, rotating it until the axis of the separator cylinder 53 coincides with that of the upper cylinder 13, forming the running channel of the slag digging component 41. The other position is the slag holding position, where the slag storage cylinder 51 is rotated 180°. Figure 7 The CC section is rotated 180° so that the slag storage chamber of the slag storage cylinder 51 is directly opposite the slag removal assembly 41.

[0065] Specifically, the separator 53 is a small cylinder welded inside the slag storage cylinder 51. When the slag storage cylinder 51 rotates, the separator 53 rotates along with it, serving as one of the operating channels of the hydraulic grab. The remaining cavities of the slag storage cylinder 51 are used to hold soil or stone materials, with a volume typically five times that of the grab. Driven by a hydraulic motor, it rotates to complete the switching between the two workstations.

[0066] Based on this, an arc-shaped scraper 51c is provided at the bottom of the slag storage cylinder 51. Typically, the arc-shaped scraper 51c is welded to the bottom of the slag storage cylinder 51 so that when the slag storage cylinder 51 rotates, the arc-shaped scraper 51c rotates around the axis of the slag storage cylinder 51, thereby scraping the slag from the working face into the pits formed by the previous slag excavation through the arc-shaped scraper 51c, thus improving slag excavation efficiency.

[0067] It should be noted that the unmanned shaft slag removal and blockage clearing device operates inside the shaft. Cameras and supplementary lighting need to be installed on the slag removal frame to clearly observe the situation inside the shaft and check the slag removal effect. Simultaneously, to achieve remote control of the device, a controller 18 is installed at the upper end of the slag removal frame 10. The controller 18 has a communication module, enabling communication with equipment above the shaft, and controls the actions of corresponding components throughout the device, achieving automatic operation. To facilitate rapid unloading of slag from the slag storage cylinder 51, a discharge door 51d is provided at the bottom of the slag storage cylinder 51.

[0068] In addition, to facilitate the power supply to the slag removal and unblocking device, a hydraulic pump station 17 is installed in the middle of the slag removal frame 10 in this embodiment. The hydraulic pump station 17 outputs hydraulic oil to each hydraulic cylinder and controls the flow direction and speed of the hydraulic oil. At the same time, the hydraulic pump station 17 is equipped with a battery and a drive motor, and the hydraulic pump station 17, drive motor and power supply battery are installed together, which is beneficial to the integration of the pump station and the reduction of its size. In this embodiment, the drive motor is a DC motor, and the single battery capacity is 300AH, with one battery in use and one in standby, mutually supporting each other. The standby battery can be charged at the wellhead charging pile, thereby ensuring 24-hour uninterrupted operation of the slag removal equipment.

[0069] The unmanned shaft slag removal and unblocking device provided in this embodiment requires coordination with the traction device 30 during operation. Specifically, the traction device 30 is installed at the inlet, such as a winch equipped with a traction frame 31. A stroke indicator is also installed on the winch to accurately display the location of the slag blocking the shaft. During slag removal, the slag removal frame 10 is connected to the traction device 30. Under its own weight, the slag removal frame 10 is lowered onto the blockage body 21 of the blocked shaft 20. That is, the operator operates the winch to lower the slag removal and unblocking device. When the slag removal and unblocking device reaches the blocked face as observed via video, the hydraulic pump station 17 is activated.

[0070] Combination Figure 8The linear drive assembly 42 drives the slag removal assembly 41 to extend through the slag removal channel 51a to remove slag. Specifically, the linear drive assembly 42 drives the slide block 43 to descend to the lower end of the separator cylinder 53. Then, the first hydraulic cylinder 41a and the second hydraulic cylinder 41c extend synchronously, so that the lower ends of the first bucket 41b and the second bucket 41d extend into the slag. After the first bucket 41b and the second bucket 41d remove the slag, the first hydraulic cylinder 41a and the second hydraulic cylinder 41c continue to extend, driving the first bucket 41b and the second bucket 41d to cover each other to prevent the slag from spilling out of the grab bucket, thereby realizing automatic slag removal, unmanned underground blockage removal, and eliminating the need for personnel to go down into the well, thus improving the safety of workers and reducing labor intensity.

[0071] After excavating the slag, the linear drive assembly 42 is controlled to drive the slide block 43 upward, stopping when the lower end of the grab bucket exceeds the upper edge of the slag storage cylinder 51. Then, the rotary drive assembly 52 is controlled to drive the slag storage cylinder 51 to rotate, turning the slag storage cylinder 51 180° to place it in the slag-collecting position. Then, the first hydraulic cylinder 41a and the second hydraulic cylinder 41c are controlled to retract, causing the grab bucket to open and discharge the slag into the slag storage cylinder 51. Figure 9 After the slag is completely unloaded, the rotary drive assembly 52 drives the slag storage cylinder 51 to rotate 180°, so that the separator cylinder 53 returns to its original position and is concentric with the upper cylinder 13, forming a channel for the grab bucket to go down and dig material again.

[0072] After the grab bucket descends, the stroke cylinder extends, pushing the grab bucket back to the face of the blockage body 21 for further excavation. During rotation, the arc-shaped scraper 51c of the slag storage cylinder 51 scrapes the slag from the working face into the pit formed by the previous excavation, improving excavation efficiency. The slag storage cylinder 51 can also rotate 360° to scrape surrounding slag into the slag pit. During this process, if it is necessary to adjust the distance between the entire slag removal and blockage clearing device and the face of the blockage body 21, a winch can be started to pull the device up or down to adjust it to a suitable distance for slag removal.

[0073] After multiple slag removals (e.g., 15-16 times) by the multi-grab bucket, or when the slag in the slag storage cylinder 51 reaches the set capacity (e.g., 3.0 m3), the winch is started to pull the slag removal and unblocking device to the wellhead. The wellhead fence is removed, and the slag removal and unblocking device is pulled to the middle of the traction frame. The slag truck 60 is driven to the bottom of the slag storage cylinder 51, and the unloading hopper door 51d is opened to release the slag in the slag storage cylinder 51 into the slag truck 60 by gravity, thus completing one slag removal process.

[0074] Therefore, this embodiment can achieve single lowering and multiple slag removal, which can reduce the number of times the slag removal frame 10 is lowered and raised, thereby greatly improving the deblocking efficiency.

[0075] In summary, this embodiment can automatically remove slag and blockages from the blockage body 21, achieving unmanned blockage removal downhole, eliminating the need for personnel to go down into the well, thereby improving worker safety, reducing labor intensity, and increasing blockage removal efficiency.

[0076] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An unmanned wellhead slag removal and blockage clearing device, characterized in that, include: The slag excavator frame (10) is axially movable along the blockage well (20) and is used to connect to the traction equipment (30). The slag removal mechanism (40) is installed on the slag removal frame (10) and includes a slag removal component (41) and a linear drive component (42). The linear drive component (42) is installed on the slag removal frame (10) and is used to drive the slag removal component (41) to slide along the length direction of the slag removal frame (10). The slag removal component (41) is capable of removing the slag from the blockage (21). The slag storage mechanism (50) is located at the lower end of the slag excavator frame (10), and is provided with a slag storage cylinder (51) and a rotary drive assembly (52). The slag storage cylinder (51) is closed at the lower end and open at the upper end, and has a slag excavation channel (51a) in its inner cavity. The slag excavation channel (51a) is provided through the slag storage cylinder (51), is separated from the inner cavity of the slag storage cylinder (51), and can be passed through by the slag excavation assembly (41). The rotary drive assembly (52) is used to drive the slag storage cylinder (51) to rotate along its own axis. Driven by the linear drive assembly (42), the slag removal assembly (41) can move to the lower end of the slag removal channel (51a) and move above the open end of the slag storage cylinder (51).

2. The unmanned shaft slag removal and blockage clearing device according to claim 1, characterized in that, The lower side of the slag excavator frame (10) is provided with multiple sets of moving rollers (11) at intervals.

3. The unmanned shaft slag removal and blockage clearing device according to claim 1, characterized in that, The slag excavator frame (10) is provided with a connecting lug (12), which is used to connect the traction equipment (30).

4. The unmanned shaft slag removal and blockage clearing device according to claim 1, characterized in that, The upper end of the slag dredging frame (10) is a cylindrical structure; The linear drive assembly (42) is installed inside the upper end of the slag excavator frame (10), and the slag excavator assembly (41) can be moved into the upper end of the slag excavator frame (10).

5. The unmanned shaft slag removal and blockage clearing device according to claim 1, characterized in that, The lower end of the slag excavator frame (10) is a circular frame, and the slag storage cylinder (51) is installed inside the lower end of the slag excavator frame (10) and slides in contact with the inner arm of the lower end of the slag excavator frame (10).

6. The unmanned shaft slag removal and blockage clearing device according to claim 5, characterized in that, A limiting ring (15) is provided at the lower end of the slag excavator frame (10), and a limiting shoulder (51b) is provided on the side wall of the slag storage cylinder (51) to match the limiting ring (15).

7. The unmanned shaft slag removal and blockage clearing device according to claim 1, characterized in that, The slag excavator frame (10) is provided with a slide rail (16), which extends along the length of the slag excavator frame (10); The slag removal mechanism (40) also includes a slide (43), which is slidably engaged with the slide rail (16), and the moving end of the linear drive assembly (42) is fixedly connected to the slide (43); the moving end of the linear drive assembly (42) is fixedly connected to the slide (43), and the slag removal assembly (41) is mounted on the slide (43).

8. The unmanned shaft slag removal and blockage clearing device according to claim 7, characterized in that, The slag removal assembly (41) includes: The first hydraulic cylinder (41a) is hinged at one end to the slide block (43); The bottom of the first bucket (41b) is hinged to the other end of the first hydraulic cylinder (41a); The second oil cylinder (41c) is hinged at one end to the slide block (43); The bottom of the second bucket (41d) is hinged to the other end of the second hydraulic cylinder (41c), and the inner side is hinged to the inner side of the first bucket (41b). When the first hydraulic cylinder (41a) and the second hydraulic cylinder (41c) are extended, the first bucket (41b) and the second bucket (41d) move closer together and can be closed.

9. The unmanned shaft slag removal and blockage clearing device according to any one of claims 1 to 8, characterized in that, The rotary drive assembly (52) includes: A rotary drive (52a) is mounted on the slag excavator frame (10) and is adapted with a drive gear (52b). Driven gear ring (52c) is installed at the open end of the slag storage cylinder (51), coaxially arranged with the slag storage cylinder (51), and meshes with the drive gear (52b).

10. The unmanned shaft slag removal and blockage clearing device according to any one of claims 1 to 8, characterized in that, The bottom of the slag storage cylinder (51) is provided with an arc-shaped slag scraper (51c).

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