A device for improving stability and auxiliary propelling force of a large-slope tunneling machine

Abstract

The present application belongs to the technical field of coal mine machinery, and particularly relates to a device for improving the stability and auxiliary propulsion force of a large-gradient roadheader, which solves the problem that the current lack of an auxiliary propulsion force loading mode that simultaneously improves the cutting stability and enhances the traction force of the large-gradient roadheader, resulting in the inability to realize the stable large-gradient continuous advancement of the roadheader and the problem of a large traction force, and comprises a support and traction device arranged on a track walking system of the roadheader, the support and traction device comprising a fixing device, a support device and a sliding device. The present application creatively proposes, for the first time, the use of a roadheader oil cylinder to push a support frame and form two stable fixing points on both sides of a coal wall, and then uses a sliding oil cylinder to push a track, thereby providing stable and reliable auxiliary traction force for the large-gradient walking of the roadheader, and preventing the roadheader from swinging during large-gradient cutting.

Description

Technical Field

[0001] This invention belongs to the field of coal mining machinery technology, specifically relating to a device for improving the stability and auxiliary propulsion force of a steep-slope tunneling machine. Background Technology

[0002] Coal mine tunneling machines operate in harsh environments, especially when pulling the conveyor belt behind the machine or when tunneling on steep slopes. Insufficient adhesion of the machine's floor plate can easily lead to slippage, insufficient drive and cutting feed, tail swaying, or machine stalling. The tunneling machine cannot meet normal driving, tunneling, and stability requirements solely through its own traction and weight. Especially when there is significant water accumulation on the floor plate, repeated forward and backward movements can easily cause machine stalling. Resolving this requires substantial manpower and resources to treat the floor plate, a process that is time-consuming and carries risks to safety.

[0003] To address these issues, tunneling machine researchers have employed various methods to apply auxiliary forces to the machines, such as adding assist devices to the sides of the tracks or to the rear. Side-mounted assist devices typically involve installing two hydraulic cylinders on either side of the tracks. These require anchoring the machine at a certain distance in front of or behind, connecting the anchors to a wire rope, and then using the cylinders to extend and retract the machine for short-distance forward or backward movement. Alternatively, a winch can be used at the rear of the machine for backward traction. However, this traction method suffers from drawbacks such as a single traction direction, insufficient safety, and inability to achieve continuous traction. It often requires installing anchors at intervals, making the process cumbersome and labor-intensive. Adding auxiliary devices to the rear of the machine affects its movement and cannot be integrated seamlessly with the machine, resulting in poor operability. Especially when tunneling machines are tunneling uphill on steep slopes, the machine has low adhesion and low drilling force, making it prone to slippage and machine swaying. Neither of the two assist devices mentioned above can effectively control the stability of the tunneling machine or improve tunneling efficiency.

[0004] Therefore, it is essential to invent an auxiliary propulsion method that can effectively improve the cutting stability of tunneling machines on steep slopes and enhance their traction force, thereby enabling continuous forward movement of the tunneling machine on steep slopes, good machine stability, and significant traction. Currently, there is no effective solution in China for tunneling machines operating on steep slopes. This invention will address the problems of insufficient machine stability, traction force, and cutting feed force in tunneling machines on steep slopes. It can be used to create a series of products across different models, with the potential for widespread application and a monopolistic effect, thereby enhancing the company's product competitiveness. Summary of the Invention

[0005] In order to solve the problem that the lack of a loading method that simultaneously improves the cutting stability and enhances the traction force of tunneling machines on steep slopes makes it impossible for tunneling machines to move forward steadily on steep slopes with a large traction force, the present invention provides a device to improve the stability and auxiliary propulsion force of tunneling machines on steep slopes.

[0006] This invention is achieved through the following technical solution: a device for improving the stability and auxiliary propulsion force of a tunneling machine with a large gradient, comprising a support and traction device installed on the tracked walking system of the tunneling machine. The support and traction device includes a fixing device, a support device, and a sliding device. The fixing device includes a mounting base, a sliding cylinder front lug, a sliding cylinder pin, and a fixed base plate. The support device includes a support seat, a support seat pin, a support frame, screws, a fixed seat, a support frame pin, a support cylinder, a support cylinder pin, and a support cylinder seat. The sliding device includes a sliding plate and a sliding... The sliding cylinder and the sliding cylinder have rear lug seats; the fixed base plate is fixedly connected to the side plate of the track frame of the tunneling machine. A bracket is provided on the upper part of the fixed base plate. The front lug seat of the sliding cylinder is fixed to the fixed base plate. The sliding cylinder connects the fixed base plate and the sliding plate. The rear lug seat of the sliding cylinder is fixed to the sliding plate. One end of the support frame is connected to the support seat, which is fixed to the fixed base plate. The other end of the support frame is connected to the rear end of the support cylinder. The front end of the support cylinder is connected to the support cylinder seat, which is fixed to the sliding plate. The fixed seat is fixed to the support frame with screws.

[0007] There are two support traction devices, which are symmetrically arranged on the outside of the track walking system, and the two support traction devices are exactly the same.

[0008] Furthermore, there are two card holders arranged at intervals. The card holders are cuboid in structure, and rectangular slots are opened along their length. The width of the rectangular slots is greater than the thickness of the fixed base plate and the sliding plate by 1mm to 3mm.

[0009] Furthermore, the support frame is connected to the support cylinder via a support frame pin.

[0010] Furthermore, the support cylinder is connected to the support cylinder seat as a whole via a support cylinder pin.

[0011] Furthermore, the fixing seat is located on the outside of the support frame. The fixing seat has a cylindrical structure. When the support frame is opened, the axis of the fixing seat is perpendicular to the fixing base plate.

[0012] The specific technical features and beneficial effects of this invention compared to the prior art are as follows:

[0013] This invention is the first to creatively propose using the hydraulic cylinder of the tunneling machine to push the support frame to form two stable fixed points on both sides of the coal wall, and then using the sliding hydraulic cylinder to push the track, thereby providing stable and reliable auxiliary traction for the tunneling machine to travel on steep slopes, while preventing the tunneling machine from swaying its tail during steep cutting.

[0014] This invention creatively utilizes the combined action of a sliding hydraulic cylinder and a supporting hydraulic cylinder to simultaneously provide assistance for both forward and backward movement of a tunneling machine on a steep slope, whereas other similar inventions can only provide assistance in one direction. This invention enables continuous support and traction for the tunneling machine in both forward and backward movements, significantly improving tunneling efficiency. The application of this support and traction method completely solves the problems of operational stability and insufficient traction force in tunneling machines on steep slopes. Its novel and reliable structure allows for the development of a series of products across different machine models, with broad market application prospects. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the relative positions of the device of the present invention and the steep slope tunneling machine;

[0016] Figure 2 For this Figure 1 Structural diagram of the device of the present invention;

[0017] Figure 3 This is a schematic diagram showing the structural relationship between the device of the present invention and the track.

[0018] Figure 4 This is a schematic diagram of the structure of the device of the present invention sliding to the front;

[0019] Figure 5 This is a schematic diagram of the structure of the device of the present invention with the support extended;

[0020] Figure 6 This is a schematic diagram of the structure of the device of the present invention during traction tunneling and drilling;

[0021] Figure 7 This is a schematic diagram of the structure for retracting the support after the device of the present invention has been in operation.

[0022] Numbering in the diagram: 1-track, 2-slider plate, 3-jaw seat, 4-front lug seat of sliding cylinder, 5-pin of sliding cylinder, 6-slider cylinder, 7-rear lug seat of sliding cylinder, 8-fixed base plate, 9-support seat, 10-pin of support seat, 11-support frame, 12-screw, 13-fixed seat, 14-pin of support frame, 15-support cylinder, 16-pin of support cylinder, 17-support cylinder seat, 18-tunneling machine, 19-track walking system, 20-support traction device, 21-fixing device, 22-support device, 23-slider device. Detailed Implementation

[0023] Reference Figures 1 to 7 Further elaborating on the present invention, a device for improving the stability and auxiliary propulsion force of a tunneling machine with a steep gradient includes a support and traction device 20 mounted on the tracked walking system 19 of the tunneling machine 18. The support and traction device 20 includes a fixing device 21, a support device 22, and a sliding device 23. The fixing device 21 includes a mounting base 3, a sliding cylinder front lug 4, a sliding cylinder pin 5, and a fixed base plate 8. The support device 22 includes a support base 9, a support base pin 10, a support frame 11, a screw 12, a fixed base 13, a support frame pin 14, a support cylinder 15, a support cylinder pin 16, and a support cylinder seat 17. The sliding device 23 includes a sliding plate 2. The sliding cylinder 6 and the sliding cylinder rear lug 7 are provided. The fixed base plate 8 is fixedly connected to the side plate of the track frame of the tunneling machine 18. The upper part of the fixed base plate 8 is provided with a card seat 3. The sliding cylinder front lug 4 is fixed on the fixed base plate 8. The sliding cylinder 6 connects the fixed base plate 8 and the sliding plate 2. The sliding cylinder rear lug 7 is fixed on the sliding plate 2. One end of the support frame 11 is connected to the support seat 9, which is fixed on the fixed base plate 8. The other end of the support frame 11 is connected to the rear end of the support cylinder 15. The front end of the support cylinder 15 is connected to the support cylinder seat 17, which is fixed on the sliding plate 2. The fixed seat 13 is fixed to the support frame 11 by screws 12.

[0024] The fixed device 21 is fixed to the side of the track frame of the tunneling machine 18. The sliding device 23 is located in the middle of the fixed device 21 and the support device 22, with the support device 22 located on the outside. There are two support traction devices 20, symmetrically arranged on the outside of the track walking system 19, and the two support traction devices 20 are identical in specifications. There are two card seats 3, spaced apart. The card seats 3 have a cuboid structure with a rectangular groove along their length. The width of the rectangular groove is greater than the thickness of the fixed base plate 8 and the sliding plate 2 by 1 mm to 3 mm. The support frame 11 is connected to the support cylinder 15 through the support frame pin 14. The support cylinder 15 is connected to the support cylinder seat 17 as a whole through the support cylinder pin 16. The fixed seat 13 is located on the outside of the support frame 11. The fixed seat 13 has a cylindrical structure, and when the support frame 11 is extended, the axis of the fixed seat 13 is perpendicular to the fixed base plate 8.

[0025] The principle and transmission relationship of this invention: The device of this invention utilizes the coordinated action of a sliding cylinder and a support cylinder to simultaneously assist the forward and backward movement of a tunneling machine with a large slope. The sliding cylinder 6 extends and retracts, causing the sliding plate 2 to slide on the fixed base plate 8. The retaining seat 3 ensures that the sliding plate 2 slides within the rectangular groove of the retaining seat 3. The sliding of the fixed base plate 3 causes the support cylinder 15 and support frame 11 mounted on it to slide back and forth. The extension and retraction of the support cylinder 15 causes the support frame 11 to extend and retract, simultaneously causing the fixed seat 13 on the support frame 11 to extend and retract, ultimately achieving the pressing and separation of the fixed seat 13 from the coal wall. When the fixed seat 13 is pressed against the coal wall, the sliding plate 2 remains stationary relative to the coal wall. The extension and retraction of the sliding cylinder 6 causes the fixed base plate 8 and the track 1 to move back and forth, providing both the ability to move the track 1 and assisting in traction.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for improving the stability and auxiliary propulsion of a tunneling machine with a steep gradient, comprising a support and traction device (20) installed on the tracked walking system (19) of the tunneling machine (18), characterized in that: The support traction device (20) includes a fixing device (21), a support device (22), and a sliding device (23). The fixing device (21) includes a card seat (3), a sliding cylinder front ear seat (4), a sliding cylinder pin (5), and a fixed base plate (8). The support device (22) includes a support seat (9), a support seat pin (10), a support frame (11), a screw (12), a fixed seat (13), a support frame pin (14), a support cylinder (15), a support cylinder pin (16), and a support cylinder seat (17). The sliding device (23) includes a sliding plate (2), a sliding cylinder (6), and a sliding cylinder rear ear seat (7). The fixed base plate (8) is fixedly connected to the side plate of the track frame of the tunneling machine (18). The upper part of the fixed base plate (8) is provided with a card seat (3). There are two card seats (3) in total and they are arranged in a certain order. The card holder (3) is a cuboid structure with a rectangular groove along its length. The width of the rectangular groove is greater than the thickness of the fixed base plate (8) and the sliding plate (2) by 1 mm to 3 mm. The front ear seat (4) of the sliding cylinder is fixed on the fixed base plate (8). The sliding cylinder (6) connects the fixed base plate (8) and the sliding plate (2). The rear ear seat (7) of the sliding cylinder is fixed on the sliding plate (2). One end of the support frame (11) is connected to the support seat (9), which is fixed on the fixed base plate (8). The other end of the support frame (11) is connected to the rear end of the support cylinder (15). The front end of the support cylinder (15) is connected to the support cylinder seat (17), which is fixed on the sliding plate (2). The fixed seat (13) is fixed to the support frame (11) by screws (12).

2. The device for improving the stability and auxiliary propulsion force of a tunnel boring machine with a large gradient according to claim 1, characterized in that: There are two support traction devices (20) symmetrically arranged on the outside of the track walking system (19), and the two support traction devices (20) are exactly the same.

3. The device for improving the stability and auxiliary propulsion force of a tunnel boring machine with a large gradient according to claim 1, characterized in that: The support frame (11) is connected to the support cylinder (15) via the support frame pin (14).

4. The device for improving the stability and auxiliary propulsion force of a tunnel boring machine with a steep gradient according to claim 1, characterized in that: The support cylinder (15) is connected to the support cylinder seat (17) as a whole through the support cylinder pin (16).

5. The device for improving the stability and auxiliary propulsion force of a tunneling machine with a steep gradient according to claim 1, characterized in that: The fixing seat (13) is located on the outside of the support frame (11). The fixing seat (13) is a cylindrical structure. When the support frame (11) is opened, the axis of the fixing seat (13) is perpendicular to the fixing base plate (8).

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