A fully mechanized coal mining face retreats passageway supporting device

Abstract

The utility model relates to the technical field of coal mine support, concretely to a fully mechanized coal face retreats passageway supporting device, including first base and second base, first base is encased in the inside of second base, and the top of first base and second base all is equipped with hydraulic support subassembly, and the inside of first base is equipped with two for with second base cooperation carries out the alternate step of advancing assembly that removes, and the inside of second base is equipped with two groups for with advancing assembly cooperation to improve the self -adaptation follow -up assembly that removes flexibility, through setting up advancing assembly and self -adaptation follow -up assembly, utilize advancing assembly and self -adaptation follow -up assembly cooperation, through the action logic of gyro wheel support resistance reduction forward movement and bracing pad fixed pull back, avoided the cumbersome process of traditional support dependence external winch traction, realized base fast alternate step, and first base and second base connect a piece after, can switch for integral gyro wheel support mode, realize device turn round, slide or tow.

Description

Technical Field

[0001] This utility model relates to the field of coal mine support technology, and in particular to a support device for the retreat passage of a fully mechanized mining face. Background Technology

[0002] The closing of a fully mechanized longwall face is a crucial step in mine production. The quality of the support for the retreat passage is a prerequisite for the face to be quickly and safely recovered. Therefore, the support device for the retreat passage of a fully mechanized longwall face is an important piece of equipment used to ensure the safety and stability of the retreat passage during coal mining.

[0003] A fully mechanized mining face retreat passage support device disclosed in Chinese Patent Publication No. CN222066821U features a base with a guide rail on which the entire device is mounted. This facilitates movement of the support device during construction and allows for rapid retrieval by sliding the entire device along the guide rail. However, traditional retreat passage support devices require traction via winch wire rope or transport by a support vehicle. Before movement, manual hooking and fixing of the traction point are necessary, and after movement, the traction equipment must be disassembled and its position adjusted. This process is complex, resulting in low retreat efficiency and the inability to operate continuously. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a support device for the retreat channel of a fully mechanized mining face.

[0005] The purpose of this utility model is achieved through the following technical solution: a support device for the retreat channel of a fully mechanized mining face, including a first base and a second base, the first base being fitted inside the second base, and both the first base and the second base being provided with hydraulic support components at their tops. The first base is provided with two propulsion components inside for alternating stepping and self-moving in cooperation with the second base, and the second base is provided with two sets of adaptive follow-up components inside for cooperating with the propulsion components to improve the flexibility of self-moving.

[0006] Preferably, the propulsion assembly includes a stepping cylinder fixedly installed inside the first base, and a straight groove propulsion component is fixedly installed at the output end of the stepping cylinder.

[0007] Preferably, both the first base and the second base are U-shaped, the output end of the stepping cylinder passes through the first base and the second base, the straight groove pusher is disposed on the front side of the second base, the second base has a large movable hole at the position corresponding to the output end of the stepping cylinder, the first base has a small movable hole at the position corresponding to the output end of the stepping cylinder, and the outer surface of the output end of the stepping cylinder is in contact with the small movable hole.

[0008] Preferably, the adaptive follow-up component includes a rack slidably disposed inside the second base. The second base is symmetrically provided with two rotating shafts located below the rack. Half gears are fixedly provided on the upper surface of each of the two rotating shafts. Both half gears mesh with the rack. Support arms are fixedly provided on the lower surface of each of the two rotating shafts. Rollers are rotatably provided at the front end of each of the two support arms. Support pads are fixedly provided at the rear end of each of the two support arms.

[0009] Preferably, a mounting component is fixedly provided at the front end of the rack, and an abutment plate is fixedly provided at the position of the rack. Both the mounting component and the abutment plate are provided outside the second base. A connecting rod is fixedly provided on the side of the mounting component facing the straight groove pusher, and the end of the connecting rod is inserted into the straight groove of the straight groove pusher.

[0010] Preferably, the bottom of the second base has slots corresponding to the positions of the two support arms, the second base has sliding holes that fit against the surface of the rack, and the rack has receiving grooves corresponding to the positions of the rollers.

[0011] Preferably, the second base has multiple first insertion holes on both its left and right sides, and the first base has a second insertion hole at the position corresponding to the multiple first insertion holes.

[0012] Preferably, the hydraulic support assembly includes multiple double telescopic columns, with a top plate fixedly installed at the top of each double telescopic column, and two of the top plates in the two hydraulic support assemblies are joined together to form a triangular working face area.

[0013] The beneficial effects of this fully mechanized mining face retreat channel support device are as follows: By setting up a propulsion component and an adaptive follow-up component, and utilizing the cooperation of the propulsion component and the adaptive follow-up component, the action logic of drag reduction and forward movement through roller support and fixed pullback through the tension pad avoids the cumbersome process of traditional supports relying on external winch traction, realizes rapid alternating steps of the base, reduces the time cost of single-step self-movement, and at the same time, after the first base and the second base are connected together, it can be switched to the overall roller support mode, which can realize device turning, sliding or traction without disassembly or additional assembly, effectively shortening the overall operation cycle. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the state of the top plate of this utility model before it is raised; Figure 3 This is a schematic diagram showing the state of the top plate of this utility model after it has been raised. Figure 4 This is a schematic diagram of the slot structure of this utility model; Figure 5 This is a schematic diagram showing the first base and the second base of this utility model in a flush position. Figure 6 A schematic diagram of the state of the adaptive follow-up component when preparing to control the forward movement of the second base in this utility model; Figure 7 This is a schematic diagram of the state after the second base of this utility model has been moved forward; Figure 8 A schematic diagram showing the state of the adaptive follow-up component when the first base enters the second base in preparation for the present invention. Figure 9 This is a schematic diagram of the state of the adaptive follow-up component after the first base enters the second base of this utility model; Figure 10 This is a schematic diagram showing the disassembled structure of the first base and the second base of this utility model; Figure 11 This is a schematic diagram of the propulsion component and the adaptive follow-up component of this utility model.

[0016] In the diagram: 1. First base; 101. Small movable hole; 102. Second insertion hole; 2. Second base; 201. Large movable hole; 202. Slot; 203. Sliding hole; 204. First insertion hole; 3. Hydraulic support assembly; 301. Double telescopic column; 302. Top plate; 4. Propulsion assembly; 401. Stepping cylinder; 402. Straight groove propeller; 5. Adaptive follow-up assembly; 501. Rack; 5011. Mounting component; 5012. Contact plate; 5013. Connecting rod; 5014. Receiving groove; 502. Rotating shaft; 503. Half gear; 504. Support arm; 505. Roller; 506. Support pad. Detailed Implementation

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0019] like Figures 1 to 11 As shown, a support device for the retreat passage of a fully mechanized mining face includes a first base 1 and a second base 2. The first base 1 is fitted inside the second base 2. Both the first base 1 and the second base 2 are provided with hydraulic support components 3 on their tops. The first base 1 is provided with two propulsion components 4 for alternating stepping and self-moving in cooperation with the second base 2. The second base 2 is provided with two sets of adaptive follow-up components 5 for cooperating with the propulsion components 4 to improve the flexibility of self-moving.

[0020] like Figure 10 and Figure 11 As shown, the propulsion assembly 4 includes a stepping cylinder 401 fixedly installed inside the first base 1. A straight groove propulsion component 402 is fixedly installed at the output end of the stepping cylinder 401. The first base 1 and the second base 2 are both U-shaped. The output end of the stepping cylinder 401 passes through the first base 1 and the second base 2. The straight groove propulsion component 402 is located on the front side of the second base 2. The second base 2 has a large movable hole 201 at the position corresponding to the output end of the stepping cylinder 401. The first base 1 has a small movable hole 101 at the position corresponding to the output end of the stepping cylinder 401. The outer surface of the output end of the stepping cylinder 401 fits against the small movable hole 101. Through the large movable hole 201, the output end of the stepping cylinder 401 will not be affected after the height of the second base 2 is raised.

[0021] like Figures 4 to 11As shown, the adaptive follow-up component 5 includes a rack 501 slidably disposed inside the second base 2. The second base 2 has two symmetrically rotatable shafts 502 located below the rack 501. Rotation holes are provided at both ends of each shaft 502 on the second base 2. The shafts 502 are connected to the rotation holes via bearings. By utilizing these bearings, the frictional force during rotation of the shafts 502 can be reduced, improving the stability of the shafts 502 during rotation. Half-gears 503 are fixedly mounted on the upper surfaces of both shafts 502, and both half-gears 503 mesh with the rack 501. Support arms 504 are fixedly mounted on the lower surfaces of both shafts 502, and rollers 505 are rotatably mounted at the front ends of both support arms 504. Each of the support arms 504 has a tensioning pad 506 fixedly installed at its rear end. The rack 501 has a mounting piece 5011 fixedly installed at its front end. The rack 501 has a contact plate 5012 fixedly installed at its position. The mounting piece 5011 and the contact plate 5012 are both located outside the second base 2. The mounting piece 5011 has a connecting rod 5013 fixedly installed on the side facing the straight groove pusher 402. The end of the connecting rod 5013 is inserted into the straight groove of the straight groove pusher 402. The bottom of the second base 2 has slots 202 at the positions corresponding to the two support arms 504. The second base 2 has sliding holes 203 at the position corresponding to the rack 501 that fit against its surface. The rack 501 has a receiving groove 5014 at the position corresponding to the roller 505.

[0022] like Figure 10 As shown, multiple first insertion holes 204 are provided on both the left and right sides of the second base 2, and a second insertion hole 102 is provided on the first base 1 at the position corresponding to the multiple first insertion holes 204. The first base 1 and the second base 2 are connected together by passing a pin through the first insertion hole 204 and the second insertion hole 102. The device can be switched to the overall roller 505 support mode without disassembly or additional assembly, so that the device can turn around, slide or be pulled. In the retraction scenario, the steps of segmented transportation and repositioning are eliminated, and the overall operation cycle is shortened.

[0023] like Figures 1 to 3 As shown, the hydraulic support assembly 3 includes multiple double telescopic columns 301, which are fixedly installed on the top of the first base 1 or the second base 2. A top plate 302 is fixedly installed on the top of the multiple double telescopic columns 301. Two top plates 302 in the two hydraulic support assemblies 3 are joined together to form a working face triangle area. The top plate 302 is raised by controlling the multiple double telescopic columns 301 to form a working face triangle area, which can provide sufficient pedestrian space.

[0024] The work process is as follows: S1: As Figure 2 , Figure 5 , Figure 6 , Figure 10 and Figure 11As shown, during self-movement, the operator uses a remote control to extend the output end of the stepping cylinder 401. When the output end of the stepping cylinder 401 extends, the connection between the connecting rod 5013 and the straight groove pusher 402 allows the mounting part 5011 to drive the rack 501 to slide inside the second base 2. At this time, the second base 2 will not move. S2: As Figure 2 , Figure 5 , Figure 6 , Figure 10 and Figure 11 As shown, when the rack 501 slides inside the second base 2, the engagement between the half gear 503 and the rack 501 allows the rotating shaft 502 to control the support arm 504 to tilt, so that the roller 505 contacts the ground, and then the second base 2 is supported by the roller 505. S3: As Figure 2 , Figure 6 , Figure 10 and Figure 11 As shown, when the contact plate 5012 contacts the second base 2, the output end of the stepping cylinder 401 continues to extend, which can cause the second base 2 to slide forward. At this time, the roller 505 contacts the ground, which can convert the sliding friction into rolling friction, significantly reducing the resistance of the second base 2 to move forward and avoiding equipment jamming or insufficient power due to excessive resistance. S4: As Figure 2 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, after the second base 2 moves a certain distance, the operator can use a remote control to retract the output end of the stepping cylinder 401. When the output end of the stepping cylinder 401 retracts, the cooperation between the connecting rod 5013 and the straight groove pusher 402 allows the mounting part 5011 to drive the rack 501 to slide inside the second base 2. At this time, the second base 2 will still not move. S5: As Figure 2 , Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, when the rack 501 slides inside the second base 2, the engagement between the half gear 503 and the rack 501 allows the rotating shaft 502 to control the support arm 504 to tilt in the opposite direction, so that the support pad 506 contacts the ground. S6: As Figure 2 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, when the mounting part 5011 contacts the second base 2, the output end of the stepping cylinder 401 continues to retract, which can cause the first base 1 to slide towards the second base 2. When retracting, the support pad 506 contacts the ground, which increases the friction to fix the second base 2, prevents slippage, and ensures that the self-movement process is stable and controllable. S7: In summary, by using the propulsion component 4 and the adaptive follow-up component 5 in conjunction, and through the action logic of the roller 505 supporting the drag reduction forward movement and the tensioning pad 506 fixing the pull-back, the cumbersome process of the traditional support relying on external winch traction is avoided, and the base can quickly alternate steps, reducing the time cost of single-step self-movement. S8: By passing the pin through the first insertion hole 204 and the second insertion hole 102, the first base 1 and the second base 2 are connected together. It can be switched to the overall roller 505 support mode. Without disassembly or additional assembly, the device can be turned around, slid or pulled. In the retraction scenario, the steps of segmented transportation and repositioning are eliminated, and the overall operation cycle is shortened.

[0025] The stepping cylinder 401 and the double telescopic column 301 described in this application are both well-known technologies in this field, therefore their specific structures and working principles are not described in detail.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A support device for the retreat passage of a fully mechanized mining face, characterized in that: It includes a first base (1) and a second base (2). The first base (1) is fitted inside the second base (2). The top of the first base (1) and the second base (2) are provided with hydraulic support components (3). The first base (1) is provided with two propulsion components (4) for alternating stepping and self-moving in cooperation with the second base (2). The second base (2) is provided with two sets of adaptive follow-up components (5) for cooperating with the propulsion components (4) to improve the self-moving flexibility.

2. The support device for the retreat passage of a fully mechanized mining face according to claim 1, characterized in that: The propulsion assembly (4) includes a stepping cylinder (401) fixedly installed inside the first base (1), and a straight groove propulsion component (402) is fixedly installed at the output end of the stepping cylinder (401).

3. A support device for the retreat passage of a fully mechanized mining face according to claim 2, characterized in that: The first base (1) and the second base (2) are both U-shaped. The output end of the stepping cylinder (401) passes through the first base (1) and the second base (2). The straight groove pusher (402) is located on the front side of the second base (2). The second base (2) has a large movable hole (201) at the position corresponding to the output end of the stepping cylinder (401). The first base (1) has a small movable hole (101) at the position corresponding to the output end of the stepping cylinder (401). The outer surface of the output end of the stepping cylinder (401) is in contact with the small movable hole (101).

4. A support device for the retreat passage of a fully mechanized mining face according to claim 3, characterized in that: The adaptive follow-up component (5) includes a rack (501) slidably disposed inside the second base (2). The second base (2) is symmetrically provided with two rotating shafts (502) below the rack (501). Half gears (503) are fixedly provided on the upper surface of the two rotating shafts (502). The two half gears (503) mesh with the rack (501). Support arms (504) are fixedly provided on the lower surface of the two rotating shafts (502). Rollers (505) are rotatably provided at the front end of the two support arms (504). Support pads (506) are fixedly provided at the rear end of the two support arms (504).

5. A support device for the retreat passage of a fully mechanized mining face according to claim 4, characterized in that: The rack (501) is fixedly provided with a mounting part (5011) at its front end, and a contact plate (5012) is fixedly provided at the position of the rack (501). The mounting part (5011) and the contact plate (5012) are both provided outside the second base (2). The mounting part (5011) is fixedly provided with a connecting rod (5013) on the side facing the straight groove pusher (402). The end of the connecting rod (5013) is inserted into the straight groove of the straight groove pusher (402).

6. A support device for the retreat passage of a fully mechanized mining face according to claim 5, characterized in that: The bottom of the second base (2) is provided with slots (202) corresponding to the positions of the two support arms (504), the second base (2) is provided with sliding holes (203) that fit against the surface of the rack (501), and the rack (501) is provided with receiving grooves (5014) corresponding to the position of the roller (505).

7. A support device for the retreat passage of a fully mechanized mining face according to claim 6, characterized in that: The second base (2) has multiple first insertion holes (204) on both the left and right sides, and the first base (1) has a second insertion hole (102) at the position corresponding to the multiple first insertion holes (204).

8. A support device for the retreat passage of a fully mechanized mining face according to claim 1, characterized in that: The hydraulic support assembly (3) includes multiple double telescopic columns (301), and a top plate (302) is fixedly installed on the top of the multiple double telescopic columns (301). Two of the top plates (302) in the two hydraulic support assemblies (3) are joined together to form a working face triangle area.

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