Telescopic conveying device of working face belt conveyor

Abstract

The utility model discloses a working face belt conveyor telescopic conveying device which comprises a plurality of belt telescopic devices, a guide rail pushing device and a machine body traction device and is connected with two parallel bearing guide rails through lifting oil cylinders, idler wheels and guide rail hydraulic clamping devices. Adjacent fuselage telescopic devices are connected and fixed through multiple pairs of telescopic hinges, the number of the hinges is adjustable, and different telescopic distance requirements are met. The belt telescopic device is provided with an upper carrier roller assembly, a lower carrier roller assembly, and an oil cylinder, a roller and a guide rail hydraulic clamp which are used for the guide rail pushing device; the guide rail pushing device comprises a pushing oil cylinder, a pushing oil cylinder sliding end, a bearing guide rail and a guide rail hydraulic clamping device. The machine body traction device is mainly composed of a traction mechanism connecting frame, a hydraulic motor, a traction roller, a traction rope and the like and used for unfolding the belt conveyor folding machine body.

Description

Technical Field

[0001] The utility model relates to a belt conveyor device used in coal mines or non - coal mines, in particular to a folding fuselage and a self - moving device for a belt conveyor. Background Technique

[0002] The DSJ type belt conveyor has many advantages such as long transportation distance, large transportation volume, high transportation efficiency, continuous transportation, simple maintenance, convenient installation and commissioning, etc., and has been widely used in the crossheading of the fully - mechanized coal mining face. The supporting belt conveyor self - moving tail solves problems such as numerous mining propulsion processes and long production - affecting time. However, due to the limitations of the size of the self - moving tail fuselage and the oil cylinder, as well as the length of the suspended section of the transfer machine, during the coal mine production process, it is necessary to stop the machine to remove the belt conveyor H - frames, longitudinal beams, idler frames and idlers, move the self - moving tail position, tighten the belt, etc. This work affects the continuous production of the working face by at least more than 1 hour per day (the advancement rate is 6.5 meters per day); with the substantial increase in the production capacity of coal mining faces, the above - mentioned problems of the crossheading belt conveyor increasingly restrict production, and the contradictions are more prominent in the automated mining of thin coal seams (single coal seams). In the working faces of high - yield and high - efficiency mines, the three - shift advancement rate can reach 20 - 30 m; according to the two - shift production and one - shift maintenance work system, the working face can be advanced 15 - 25 meters per production shift. Each shift must frequently stop the machine to disassemble the frame rollers of the fuselage section, which greatly affects the performance of the working face equipment and restricts the further increase in output. Summary of the Invention

[0003] Aiming at the problem that the existing floor - type fuselage in the fully - mechanized coal mining face cannot meet the requirements of rapid tunneling, and the supporting belt conveyor self - moving tail is restricted by the size of the self - moving tail fuselage and the oil cylinder, as well as the length of the suspended section of the transfer machine, the utility model discloses a telescopic transportation device for a belt conveyor in a working face. It has a telescopic fuselage and is used in conjunction with the belt conveyor self - moving tail to solve the problem of discontinuous production of traditional conveyors.

[0004] To solve the above problems, the technical solution of the utility model is: a telescopic transportation device for a belt conveyor in a working face, characterized in that it includes two parallel carrying guide rails, several fuselage telescopic devices, a set of fuselage guide rail pushing devices, and a fuselage traction device; adjacent fuselage telescopic devices are connected and fixed through multiple pairs of telescopic hinges, each set of fuselage telescopic devices is connected to the carrying guide rail through a sliding carrying device, and a guide rail hydraulic clamp is equipped on each set of sliding carrying devices; the fuselage telescopic device is equipped with an upper idler assembly and a lower idler assembly;

[0005] The sliding carrying device is connected to the carrying guide rail, the guide rail hydraulic clamp is rigidly connected to the sliding carrying device through a flange, and the sliding and contraction of the fuselage telescopic device on the carrying guide rail are realized through the cooperation of the clamping and loosening actions of the guide rail hydraulic clamp and the pushing oil cylinder;

[0006] The fuselage traction device is arranged on the traction mechanism connecting frame and is used to unfold the folded fuselage of the fuselage telescopic device;

[0007] Among them, two parallel carrying guide rails are laid at the bottom of the roadway. Multiple fuselage telescopic devices are equipped on the carrying guide rails, and guide rail lifting cylinders are arranged on both sides of each fuselage telescopic device.

[0008] Furthermore, the sliding carrying device includes a guide plate, a clamping plate, an axial pressing plate, a carrying wheel, a pin shaft, a roller shaft, a side fixing plate, and a carrying frame; the side fixing plate is connected to the guide rail hydraulic clamp through a flange. The side fixing plate is connected through the clamping plate and the pin shaft, and the pin shaft is connected to the lifting cylinder. Two clamping plates are equipped with carrying wheels through the roller shaft, and the carrying wheels press on the guide rail surface of the carrying guide rail; the inner side of the sliding carrying device is tangent to the inner side of the guide rail surface of the carrying guide rail. When the lever of the lifting cylinder contracts, the carrying guide rail is simultaneously lifted through the inner side surface of the carrying frame, realizing the up and down movement of the guide rail.

[0009] Furthermore, the fuselage telescopic device is supported on two parallel carrying guide rails through the carrying frame and the carrying wheels.

[0010] Furthermore, the guide rail pushing device includes a pushing cylinder, a sliding end of the pushing cylinder, and a fixed end of the pushing cylinder; a pushing cylinder is equipped at the front end of the guide rail pushing device. One end of the pushing cylinder is fixed at the fixed end of the pushing cylinder of the fuselage telescopic device, and one end is connected to the sliding end of the pushing cylinder through a movable hinge A.

[0011] Furthermore, the fuselage traction device is arranged on the traction mechanism connecting frame and includes a hydraulic motor, a traction drum, and a traction rope; the telescopic device fuselage frames at both ends are connected through the traction mechanism connecting frame. Using the emulsion pump station as the power source, the fuselage traction device is connected to the distal fixed H-frame to drive the hydraulic motor, and the unfolding of the fuselage telescopic device is realized through the traction and stretching of the traction rope.

[0012] Furthermore, the carrying guide rail is an H-shaped steel, and connecting pin holes are provided at its ends. Several carrying guide rails are connected through connecting plates. The carrying wheels are arranged on the upper guide rail surface and are connected to the inner edge of the upper surface of the carrying guide rail through the sliding carrying device, realizing the functions of lifting the guide rail and carrying.

[0013] Furthermore, the upper idler assembly is composed of an upper idler bracket, idlers connected in sequence, a middle support column, a rib plate, a connecting angle steel, and a connecting plate, and is arranged on the upper part of the fuselage telescopic device and is connected by bolts; the lower idler assembly is composed of a lower idler and a lower idler connecting frame and is arranged between the H-frames of the fuselage connecting device.

[0014] Furthermore, the fuselage telescopic device is equipped with a hydraulic leveling function. During operation, it contacts the roadway floor through two parallel bearing rails. When the unevenness of the roadway affects the fuselage, the support sliding shoes inside the fuselage frame of the telescopic device are adjusted to level the local part of the fuselage and eliminate the influence of the uneven roadway.

[0015] Furthermore, the guide rail hydraulic gripper is hydraulically controlled. Through the cylinder piston and the connecting rod mechanism, the two clamping plates of the gripper are controlled to clamp or release the bearing rail track under the drive of the cylinder.

[0016] Furthermore, the telescopic hinges are connected through the movable hinge B and the positioning wear-resistant sleeve. The connecting pin shafts of the telescopic device fix the telescopic connecting rod A and the telescopic connecting rod B of the connecting hinge on the fuselage frame of the telescopic device. The connecting bolt A is used to fix the base of the lifting cylinder on the fuselage frame of the telescopic device, and the connecting bolt B is used to fix the upper idler bracket on the H-frame.

[0017] The utility model has the following beneficial effects:

[0018] The telescopic transportation device of the belt conveyor in the working face of the utility model eliminates the influence of the roadway floor on the fuselage. The effective folding length of the fuselage is 15 - 100 meters, and it can quickly complete the folding and unfolding process, completely solving the problem of discontinuous production in the production shift. Only the subsequent H-frames and crossbeams need to be centrally removed during maintenance, ensuring the continuity of production, improving production efficiency, reducing the labor intensity of workers, and saving a large amount of manpower and material resources wasted in repairing the roadway floor and removing H-frames during the production process. It is widely applicable to various fully mechanized mining mines. Brief Description of the Drawings

[0019] Figure 1 is the overall structure schematic diagram of the telescopic transportation device of the belt conveyor in the working face;

[0020] Figure 2 is the structure schematic diagram of the guide rail pushing device 6;

[0021] Figure 3 is the structure schematic diagram of the fuselage telescopic device 3;

[0022] Figure 4 is Figure 3 the side view of;

[0023] Figure 5 is the structure schematic diagram of the sliding bearing device 13;

[0024] Figure 6 is Figure 5 the top view of;

[0025] Figure 7 is Figure 5 the side view of:

[0026] Figure 8 It is a schematic structural diagram of the upper idler assembly 4;

[0027] Figure 9 is Figure 8 side view of:

[0028] Figure 10 It is a schematic structural diagram of the lower idler assembly 14;

[0029] Figure 11 It is a schematic structural diagram of the guide rail hydraulic gripper 19;

[0030] Figure 12 Figure 11 top view of;

[0031] Figure 13 It is a schematic structural diagram of the fuselage traction device 1;

[0032] Figure 14 It is a schematic structural diagram of the telescopic link A26;

[0033] Figure 15 It is a schematic structural diagram of the telescopic link B27.

[0034] In the figure: fuselage traction device 1, traction mechanism connecting frame 2, fuselage telescopic device 3, upper idler assembly 4, telescopic hinge 5, guide rail pushing device 6, carrying guide rail 7, H-frame 8, telescopic device fuselage frame 9, lifting oil cylinder base 10, lifting oil cylinder pin 11, lifting oil cylinder 12, sliding carrying device 13, lower idler assembly 14, supporting sliding shoe 15, telescopic device connecting pin 16, connecting bolt A17, connecting bolt B18, guide rail hydraulic gripper 19, pushing oil cylinder sliding end 20, movable hinge A21, pushing oil cylinder 22, pushing oil cylinder fixed end 23, movable hinge B24, wear-resistant sleeve 25, telescopic link A26, telescopic link B27, upper idler bracket 28, idler roller 29, middle support column 30, rib plate 31, connecting angle steel 32, connecting plate 33, guide plate 34, clamping plate 35, connecting bolt C36, axial pressing plate 37, carrying wheel 38, pin shaft 39, roller shaft 40, side fixing plate 41, carrying frame 42, lower idler 43, lower idler connecting frame 44, hydraulic motor 45, traction drum 46, traction rope 47. Specific implementation manner

[0035] During use, install the telescopic transportation device of the working face belt conveyor of the present utility model between the belt conveyor self-aligning tail and the original belt conveyor tail, remove some components such as the H-frame and cross beam of the belt conveyor to meet the equipment installation requirements in terms of space, fully expand the telescopic transportation device of the working face belt conveyor, use the upper idler assembly 4 and the lower idler assembly 14 to support the upper belt and the lower belt respectively, and then start the telescopic belt conveyor, the telescopic transportation device of the working face belt conveyor, the transfer machine, the scraper conveyor and the coal mining machine in sequence.

[0036] As Figure 1 shown, a telescopic transportation device for a working face belt conveyor includes two parallel carrying guide rails 7, several fuselage telescopic devices 3, a set of fuselage guide rail pushing devices 6, and a fuselage traction device 1.

[0037] Each carrying guide rail 7 is formed by connecting multiple sections of steel rails to enable the smooth movement of the fuselage telescopic device 3 on the guide rail. The fuselage telescopic device 3 is supported on the two parallel carrying guide rails 7 through a carrying frame 42 and carrying wheels 38.

[0038] The two parallel carrying guide rails 7 are laid at the bottom of the roadway, on which multiple fuselage telescopic devices 3 are equipped. Lifting cylinders 12 are provided on both sides of each fuselage telescopic device and are supported on the two carrying guide rails 7 through a sliding carrying device 13. Adjacent fuselage telescopic devices 3 are fixed by multiple pairs of telescopic hinges 5, and the number of hinges is adjustable to meet different telescopic distance requirements.

[0039] As Figure 3 、 Figure 4 shown, the upper end of the fuselage telescopic device 3 is equipped with an upper idler assembly 4, and the lower end is equipped with a lower idler assembly 14. The upper belt of the equipped conveyor is pressed on the upper idlers, and the lower belt of the equipped conveyor is pressed on the lower idlers.

[0040] As Figure 2 shown, the guide rail pushing device 6 includes a pushing cylinder 22, a sliding end 20 of the pushing cylinder, and a fixed end 23 of the pushing cylinder. The front end of the guide rail pushing device is equipped with a pushing cylinder 22. One end of the pushing cylinder 22 is fixed at the fixed end 23 of the pushing cylinder of the fuselage telescopic device 3, and the other end is connected to the sliding end 20 of the pushing cylinder through a movable hinge A21. The sliding carrying device 13 is connected to the carrying guide rail 7 and is equipped with a guide rail hydraulic clamp 19. The sliding and contraction of the fuselage telescopic device 3 on the carrying guide rail 7 are achieved through the cooperation of the tightening and loosening actions of the guide rail hydraulic clamp 19 and the pushing cylinder 22.

[0041] As Figure 5 、 Figure 6 、 Figure 7 shown, the sliding carrying device 13 includes a guide plate 34, a clamping plate 35, an axial pressing plate 37, a carrying wheel 38, a pin shaft 39, a roller shaft 40, a side fixing plate 41, and a carrying frame 42; the side fixing plate 41 is connected to the guide rail hydraulic clamp 19 through a flange. The side fixing plate 41 is connected through the clamping plate 35 and the pin shaft 39, and the pin shaft 39 is connected to the lifting cylinder 12. Two clamping plates 35 are equipped with carrying wheels 38 through the roller shaft 40, and the carrying wheels 38 press on the upper guide surface of the carrying guide rail 7; the inner side of the sliding carrying device 13 is tangent to the inner side of the guide surface of the carrying guide rail 7. When the lever of the lifting cylinder 12 contracts, the carrying guide rail 7 is simultaneously lifted through the inner side surface of the carrying frame 42 to achieve the up and down movement of the guide rail. The connecting bolt C36 is used to fix the clamping plate 35.

[0042] As shown Figure 13 in the figure, the fuselage traction device 1 is arranged on the traction mechanism connecting frame 2, and includes a hydraulic motor 45, a traction drum 46, and a traction rope 47; the telescopic device fuselage frames 9 at both ends are connected through the traction mechanism connecting frame 2, and the emulsion pump station is used as the power source. The fuselage traction device 1 is connected to the distal fixed H-frame 8 to drive the hydraulic motor 45, and the expansion of the fuselage telescopic device 3 is realized through the traction and stretching of the traction rope 47.

[0043] The carrying guide rail 7 is an H-shaped steel, and connection pin holes are provided at its ends. Several carrying guide rails 7 are connected through a connecting plate 33. The carrying wheels 38 are arranged on the upper guide rail surface and are connected to the inner edge of the upper surface of the carrying guide rail 7 through the sliding carrying device 13 to realize the function of raising the guide rail and carrying.

[0044] As Figure 8 shown Figure 9 in Figure 10 the figure, the idler assembly 4 is composed of an upper idler bracket 28, idlers 29, middle struts 30, rib plates 31, connecting angle steels 32, and connecting plates 33 that are connected in sequence, and is arranged on the upper part of the fuselage telescopic device 3 and is connected by bolts; the lower idler assembly 14 is composed of a lower idler 43 and a lower idler connecting frame 44, and is arranged between the H-frames 8 of the fuselage connecting device.

[0045] As Figure 11 shown Figure 12 in the figure, the guide rail hydraulic gripper 19 is hydraulically controlled. Through the oil cylinder piston and the connecting rod mechanism, the two clamping plates of the gripper are controlled to clamp or release the track of the carrying guide rail 7 under the drive of the oil cylinder.

[0046] As Figure 14 shown Figure 15 in the figure, the telescopic hinges 5 are connected through the movable hinge B24 and the positioning wear-resistant sleeve 25. The telescopic device connecting pin shaft 16 fixes the connecting hinge telescopic link A26 and the telescopic link B27 on the telescopic device fuselage frame 9. The connecting bolt A17 is used to fix the elevation oil cylinder base 10 on the telescopic device fuselage frame 9, and the connecting bolt B18 is used to fix the upper idler bracket on the H-frame 8.

[0047] During the stretching and contraction process of the telescopic link A26 and the telescopic link B27 through the hinge, positioning is carried out through the bosses at both ends of the telescopic link. The telescopic link A26 and the telescopic link B27 ensure the telescopic amount of the fuselage telescopic device during contraction and expansion through their own and boss dimensions.

[0048] Before production, the telescopic conveyor device on the working face is in the deployed state. During production, the self-advancing tail follows the working face and moves forward. Operate the body retraction device 3 in the telescopic conveyor device on the working face, and cooperate with the guide rail hydraulic gripper 19 to gradually retract the body of the body retraction device 3. Within the effective folding length of the telescopic conveyor device on the working face, the conveyor can meet the requirements of the working face advancement without stopping during the entire production process.

[0049] When the self-advancing tail needs to advance one stroke, the telescopic hinge 5 is extended and retracted through the mutual cooperation of the push cylinders 22 installed on the two-side bearing guide rails 7 and the guide rail hydraulic gripper 19. When the telescopic body retracts to the shortest position, move the bearing guide rail 7 to a suitable position, and the entire belt conveyor telescopic device is deployed through the body traction device 1.

[0050] When the entire body needs to be deployed, except for the guide rail hydraulic gripper 19 at the end of the self-advancing tail being tightened, all the other guide rail hydraulic grippers remain in the loosened state. The traction rope 47 is connected to the distal fixed H-frame, and the entire body is deployed through hydraulic traction.

[0051] During the working state, the elevation cylinder 12 on the body telescopic device 3 extends, the bearing guide rail 7 supports the roadway floor, and all the guide rail hydraulic grippers 19 remain in the tightened state. When the self-advancing tail needs to advance one stroke, ensure that the guide rail hydraulic gripper 19 at the extending end of the guide rail pushing device 6 is tightened, the guide rail hydraulic gripper 19 of the first telescopic body telescopic device 3 is opened, the telescopic hinge 5 is retracted through the push cylinder 22. After the retraction is completed, the guide rail hydraulic gripper 19 of the first body telescopic device is locked, the guide rail hydraulic gripper 19 at the extending end of the guide rail pushing device 6 is loosened, and the push cylinder 22 retracts. When the body telescopic device 3 completes the action, all the guide rail hydraulic grippers 19 are locked, thus ensuring the rigidity and stability of the overall body. And so on, through the cooperation of the push cylinder 22 and the guide rail hydraulic gripper 19, the multi-section body telescopic device 3 is retracted. The maximum distance for each group of telescopic bodies to deploy is 1400 mm, and the minimum distance of the body after retraction is 300 mm (the telescopic amount can be adjusted according to requirements), and each time a telescopic device is retracted, the body is shortened by 1100 mm.

[0052] The special telescopic link A26 and telescopic link B27 can achieve the mutual positioning function after being fully deployed and retracted, ensuring the dimensions after extension and deployment and the movement of the entire telescopic device on the guide rail.

[0053] The body telescopic device 3 is equipped with a hydraulic leveling function. During the working state, it contacts the roadway floor through two parallel bearing guide rails 7. When the roadway unevenness affects the body, the inner support sliding shoes 15 of the telescopic device body frame 9 are adjusted to level the local part of the body and eliminate the influence of the roadway unevenness.

[0054] The telescopic transportation device of the working face belt conveyor also includes a hydraulic control system for the fuselage traction device. Its main functions are as follows: controlling the lifting cylinder 12 on the fuselage telescopic device 3 to achieve the support of the carrying guide rail 7 and the stability of the fuselage; the pushing cylinder 22 cooperates with the guide rail hydraulic gripper 19 to achieve the contraction of the fuselage telescopic device 3; controlling the pushing cylinder 22 to achieve the translation of the carrying guide rail 7; through the cooperation of the fuselage traction device 1 and the guide rail hydraulic gripper 19, the fuselage telescopic device 3 is unfolded. The hydraulic control system consists of a pressure reducing valve, a directional control valve, a pressure gauge, a hydraulic motor, a hydraulic lock, a speed control valve, etc. The power source is the 31.5 Mpa emulsion provided by the emulsion pump station. After passing through the pressure reducing valve, the electromagnetic directional control valve is used to control the lifting cylinder 12 to achieve the lifting and lowering action of the carrying guide rail 7, and the hydraulic lock is used to maintain pressure to prevent self-shifting during the working process. The fuselage traction device 1 uses the emulsion pump station as the power source to drive the hydraulic motor 45, and the fuselage telescopic device 3 is unfolded through the traction and stretching of the traction rope 47.

[0055] When the fuselage is unfolded, it is connected to the distal fixed H-frame 8 through the fuselage traction device 1, and the hydraulic motor 45 drives the drum 46 to traction the fuselage, realizing the unfolding of the fuselage telescopic device 3. Using the emulsion pump station as the power source, it is safe and pollution-free. Especially, it has an overload protection function and will not malfunction due to overload. When overloaded, the motor only reduces speed or stops. When the overload is removed, it can immediately resume normal operation without causing faults such as mechanical part damage.

[0056] First, the traction rope 47 is pulled out and the rope end is fixed on the distal fixed H-frame 8; then the hydraulic motor 45 is started, and the traction drum 46 takes in the rope. Since the rope end is fixed, the winch moves towards the rope end during the process of the winch taking in the rope, thus driving the front part of the telescopic fuselage to move and unfolding the fuselage.

[0057] When the telescopic transportation device of the working face belt conveyor is fully retracted and needs to be unfolded again, the hydraulic control system controls that except for the guide rail hydraulic gripper 19 at the end of the self-propelled tail to be tightened, the other guide rail hydraulic grippers 19 remain in the loose-preventing state. It is fixed at the distal end in the required moving direction through the hook or loop at the traction rope 47, and then the hydraulic motor 45 is started. Under the traction force, the fuselage is pulled towards the rope end, making the telescopic transportation device of the working face belt conveyor fully unfolded.

Claims

1. A telescopic transport device for a working surface belt conveyor, characterized in that : It comprises two parallel bearing guide rails (7), a plurality of fuselage telescopic devices (3), a set of fuselage guide rail pushing devices (6), and a fuselage traction device (1); adjacent fuselage telescopic devices (3) are connected and fixed by multiple pairs of telescopic hinges (5); each set of fuselage telescopic devices (3) is connected to the bearing guide rails (7) by a sliding bearing device (13), and each set of sliding bearing devices (13) is equipped with a guide rail hydraulic clamp (19); the fuselage telescopic device (3) is equipped with an upper roller assembly (4) and a lower roller assembly (14); The sliding bearing device (13) is connected to the bearing guide rail (7), and the guide rail hydraulic clamp (19) is rigidly connected to the sliding bearing device (13) through a flange. The sliding contraction of the fuselage telescopic device (3) on the bearing guide rail (7) is achieved through the tightening and loosening actions of the guide rail hydraulic clamp (19) and the cooperation of the push cylinder (22); The fuselage traction device (1) is arranged on the traction mechanism connecting frame (2) and is used to fold the fuselage telescopic device (3) to unfold the fuselage; Two parallel bearing guide rails (7) are laid at the bottom of the tunnel, and a plurality of fuselage telescopic devices (3) are provided on the bearing guide rails (7). Each fuselage telescopic device (3) is provided with guide rail raising oil cylinders (12) on both sides.

2. The telescopic transport device for a working surface belt conveyor according to claim 1, characterized in that: The sliding bearing device (13) includes a guide plate (34), a clamping plate (35), an axial pressure plate (37), a bearing wheel (38), a pin shaft (39), a roller shaft (40), a side fixing plate (41), and a bearing frame (42); the side fixing plate (41) is connected to the guide rail hydraulic clamp (19) through a flange, the side fixing plate (41) is connected to the clamping plate (35) and the pin shaft (39), the pin shaft (39) is connected to the lifting cylinder (12), and the two clamping plates (35) are equipped with bearing wheels (38) through the roller shaft (40), and the bearing wheels (38) are pressed on the guide rail surface of the bearing guide rail (7); the inner side of the sliding bearing device (13) is tangent to the inner side of the guide rail surface of the bearing guide rail (7), and when the lever of the lifting cylinder (12) is retracted, the bearing guide rail (7) is lifted at the same time through the inner side of the bearing frame (42), so that the guide rail moves up and down.

3. The telescopic transport device for a working surface belt conveyor according to claim 2, characterized in that: The fuselage telescopic device (3) is supported on two parallel bearing guide rails (7) via a bearing frame (42) and bearing wheels (38).

4. The telescopic transport device for a working surface belt conveyor according to claim 1, characterized in that: The guide rail pushing device (6) comprises a pushing cylinder (22), a pushing cylinder sliding end (20), and a pushing cylinder fixed end (23); the front end of the guide rail pushing device (6) is equipped with a pushing cylinder (22), one end of the pushing cylinder (22) is fixed to the pushing cylinder fixed end (23) of the fuselage telescopic device (3), and the other end is connected to the pushing cylinder sliding end (20) through a movable hinge A (21).

5. The telescopic transport device for working surface belt conveyor according to claim 1, characterized in that The fuselage traction device (1) is arranged on the traction mechanism connecting frame (2), and includes a hydraulic motor (45), a traction roller (46), and a traction rope (47); the telescopic device fuselage frames (9) at both ends are connected through the traction mechanism connecting frame (2), and the emulsion pump station is used as a power source. The fuselage traction device (1) is connected to the remote fixed H frame (8) to drive the hydraulic motor (45), and the expansion of the fuselage telescopic device (3) is achieved by traction and stretching of the traction rope (47).

6. The telescopic transport device for working surface belt conveyor according to claim 1, characterized in that The bearing guide rail (7) is an H-shaped steel with a connecting pin hole at its end. Several bearing guide rails (7) are connected by a connecting plate (33). The bearing wheel (38) is arranged on the upper guide rail surface and is connected to the inner edge of the upper surface of the bearing guide rail (7) through a sliding bearing device (13) to achieve the lifting of the guide rail and the bearing function.

7. The telescopic transport device for working surface belt conveyor according to claim 1, characterized in that The upper roller assembly (4) is composed of an upper roller bracket (28), rollers (29) connected in sequence, a middle support (30), a rib plate (31), a connecting angle steel (32), and a connecting plate (33), and is arranged on the upper part of the fuselage telescopic device (3) and connected by bolts; the lower roller assembly (14) is composed of a lower roller (43) and a lower roller connecting frame (44), and is arranged between the fuselage connecting device H frame (8).

8. The telescopic transport device for working surface belt conveyor according to claim 1, characterized in that The fuselage telescopic device (3) is equipped with a hydraulic leveling function. In the working state, it contacts the roadway ground through two parallel bearing guide rails (7). In the case that the unevenness of the roadway affects the fuselage, the support sliding shoe (15) on the inner side of the telescopic device fuselage frame (9) is adjusted to locally level the fuselage to eliminate the influence of the unevenness of the roadway.

9. The telescopic transport device for working surface belt conveyor according to claim 1, characterized in that The guide rail hydraulic clamp (19) is hydraulically controlled, and the two clamping plates of the clamp are controlled by the oil cylinder piston and the connecting rod mechanism, and the guide rail (7) is pressed or released under the drive of the oil cylinder.

10. The telescopic transport device for working surface belt conveyor according to claim 1, characterized in that : The telescopic hinges (5) are connected by a movable hinge B (24) and a positioning wear-resistant sleeve (25). The telescopic device connecting pin (16) fixes the connecting hinge telescopic link A (26) and the telescopic link B (27) to the telescopic device body frame (9). The connecting bolt A (17) is used to fix the lifting cylinder base (10) to the telescopic device body frame (9), and the connecting bolt B (18) is used to fix the upper roller bracket to the H frame (8).

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