Belt conveyor with belt surface transport device

Abstract

This utility model provides a belt conveyor surface transport device, belonging to the technical field of belt conveyor equipment. The technical solution is as follows: a belt conveyor surface transport device includes a support trolley, on which support rollers one and two are horizontally spaced. Support rollers one and two are parallel to each other and at the same height, and together can support the coiled belt surface. A guide rail is provided below the support trolley, allowing the support trolley to move directly under a monorail crane. A limit mechanism is provided on the guide rail to restrict the support trolley to a predetermined position. The beneficial effect of this utility model is that this device can achieve swing-free operation during the lifting of the coiled belt surface, effectively eliminating safety hazards in this scenario.

Description

Technical Field

[0001] This utility model belongs to the technical field of belt conveyor equipment, specifically relating to a belt conveyor surface transport device. Background Technology

[0002] In the underground roadway environment of coal mines, belt conveyors are the core equipment for continuous material transportation at the tunneling face. As the roadway continues to extend, it is necessary to frequently add belts to the belt conveyor to adapt to changes in transportation distance. As a key supporting equipment, the performance of the auxiliary belt adding device directly affects the extension efficiency of the belt conveyor and the safety of underground transportation.

[0003] As shown in the patent with publication number CN217894570U, the device is fixed near the head of the belt conveyor by a base, a triangular support frame and a ground anchor, keeping the overall position fixed. Its core winding structure is powered by a motor and a gearbox, which drives the winding shaft to rotate to complete the winding of the belt surface. The two ends of the winding shaft are stably supported by bearing seats, and the two ends of the shaft are equipped with locking pins to fix the rolled belt surface after winding and prevent it from loosening. After the winding operation is completed, the rolled belt surface needs to be placed on the device base to wait for subsequent transfer.

[0004] However, in actual underground operations, in order to ensure the smooth flow of transportation channels in the roadway, the installation position of this fixed device is often not directly below the hoisting of the underground monorail lifting beam. This causes the coiled strip to swing violently due to the misalignment of the center of gravity and the lifting point when it is subsequently hoisted. This not only makes it easy to collide with pipelines, supports and other equipment in the roadway, but may also cause the coiled strip to fall off from the hoisting state due to excessive swing amplitude, directly threatening the personal safety of on-site workers. Utility Model Content

[0005] This utility model addresses the safety hazard caused by the misalignment between the installation position of the coiled strip and the hoisting position of the monorail beam, which leads to swaying during the hoisting process. It provides a belt conveyor strip transport device that can eliminate swaying during the hoisting of the coiled strip, effectively eliminating this safety hazard.

[0006] To solve the above problems, the technical solution adopted by this utility model is a belt conveyor belt conveyor belt transport device, including a support trolley. The support trolley is equipped with a support roller 1 and a support roller 2 arranged at intervals along the horizontal direction. The support roller 1 and the support roller 2 are parallel to each other and have the same height. The support roller 1 and the support roller 2 can jointly support the coiled belt. A guide rail is provided below the support trolley. The support trolley can move to the direct under the monorail beam through the guide rail. A limit mechanism is provided on the guide rail. The limit mechanism can restrict the support trolley to a predetermined position.

[0007] In this technical solution, a support trolley is equipped with two support rollers, one parallel to each other and at the same height, positioned horizontally to support the coiled strip. A guide rail is located below the support trolley, allowing it to move directly beneath the monorail lifting beam. A limiting mechanism on the guide rail keeps the support trolley in a predetermined position. During the lifting of the coiled strip, the support trolley is first moved along the guide rail to directly beneath the monorail lifting beam. At this point, the coiled strip is stably placed on support rollers one and two, preventing swaying. Subsequently, the coiled strip is transported via the guide rail, and with the limiting mechanism's control over the support trolley, the coiled strip can accurately reach the designated position on the belt conveyor. Therefore, this device achieves sway-free lifting of the coiled strip, effectively eliminating safety hazards in this scenario.

[0008] Furthermore, an auxiliary roller is installed on the support trolley, located on one side of the trolley and parallel to the first support roller. When the first and second support rollers support the coiled strip, the axial height of the auxiliary roller is higher than that of the coiled strip. This blocks the radial rolling path and prevents lateral roll-off. When the coiled strip is supported only by the first and second support rollers, its cylindrical structure makes it prone to radial roll-off, especially during trolley start-up, stopping, or slight shaking, increasing the risk of roll-off. The auxiliary roller, located on one side of the support rollers and with its axial height higher than that of the coiled strip, forms a physical barrier with the lateral periphery of the coiled strip, acting like a lateral guardrail to block the radial movement of the coiled strip. Structurally, this directly prevents the coiled strip from rolling off the support trolley, eliminating the safety hazard of the strip rolling off and injuring equipment or personnel during downhole operations.

[0009] Furthermore, the support trolley is also equipped with clamping roller one and clamping roller two, located on the other side of the support trolley. Clamping roller one and clamping roller two are parallel to each other and are both parallel to support roller one. When support roller one and support roller two support the coiled strip surface, the axial height of clamping roller one and clamping roller two is higher than the axial height of the coiled strip surface. Clamping roller one is positioned above clamping roller two, and a gap is provided between clamping roller one and clamping roller two. This forms a double-sided closed-loop limiting structure, completely eliminating the risk of radial rolling. The auxiliary roller has already radially blocked the coiled strip surface from one side of the support roller, while clamping roller one and clamping roller two synchronously limit it from the other side. Together, they form a closed-loop protective structure with left and right double-sided clamping. No matter which side the coiled strip surface tends to roll radially, it will be blocked by the corresponding roller, providing greater stability compared to single-sided limiting. Especially when the support trolley moves along the guide rail, starts and stops, or bumps in the underground roadway, the radial force generated by the inertia of the rolled strip surface will be jointly canceled by the rollers on both sides, avoiding the problem of unilateral force deviation that may occur with unilateral limit, and completely preventing the strip surface from rolling off the side of the support trolley, thus ensuring the safety of underground operations.

[0010] Furthermore, the gap between clamping roller one and clamping roller two is 2mm wider than the joint thickness of the coiled belt surface. This gap provides a precise guiding channel for the belt surface joint, ensuring controllable docking direction. When the coiled belt surface needs to be unrolled and docked with the belt conveyor, the belt surface joint must first pass through the gap between the clamping rollers. The gap width is only 2mm wider than the joint thickness. This prevents the joint from shifting due to an excessively wide gap, avoiding deviation from the docking position on the belt conveyor and reducing the hassle of manual adjustment. Conversely, it prevents the joint from getting stuck due to an excessively narrow gap, allowing the joint to be stably conveyed forward along the constrained channel of the gap and directly guided to the docking port of the belt conveyor. This eliminates the need for manual correction of the joint direction during underground operations, making it particularly suitable for scenarios with narrow underground spaces and inconvenient manual operation.

[0011] Furthermore, the bottom of the support trolley is rotatably connected to a traveling wheel. The outer circumference of the traveling wheel has grooves that engage with the guide rail. This forced guidance ensures straight-line movement and maintains the stability of the belt's center of gravity. The center of gravity of the coiled belt must be aligned with the center of the support trolley and the guide rail. If the support trolley deviates from its course during movement, the belt's center of gravity will shift to one side, potentially causing the trolley to tip over or the belt to roll laterally. The engagement of the traveling wheel's groove with the guide rail forces the trolley to move linearly along the guide rail's axis, preventing deviation due to road bumps or uneven resistance. This ensures the coiled belt remains at the support trolley's center, avoiding safety hazards caused by center of gravity shift and reducing subsequent positional correction steps when docking with the belt conveyor.

[0012] Furthermore, a hydraulic cylinder is installed on the outer side of the support trolley. The axis of the hydraulic cylinder is in the same direction as the length of the guide rail. The piston rod end of the hydraulic cylinder is fixedly connected to the support trolley. A control valve is installed on the outside of the hydraulic cylinder, and the control valve is connected to the hydraulic cylinder through a hydraulic pipe. This provides stable power suitable for heavy loads, meeting the needs of heavy-load movement. The weight of the coiled strip can reach several hundred kilograms. The support trolley needs sufficient thrust to move under this load. The hydraulic cylinder, relying on the characteristics of hydraulic transmission, can output continuous and large thrust, easily driving the trolley carrying the heavy coil to move along the guide rail. This is especially suitable for underground scenarios where slight deformation of the guide rail or the adhesion of coal dust increases resistance, ensuring that the trolley does not stop due to excessive load.

[0013] Furthermore, the limiting mechanism includes a stop block, which is mounted on the guide rail and can block the traveling wheels of the supporting trolley. This ensures precise alignment on the first attempt and avoids docking deviations. The stop block is fixed on the guide rail according to the docking position of the belt conveyor. When the supporting trolley moves carrying the coiled belt surface, the traveling wheels stop upon touching the stop block. This eliminates the need for manual observation, which is crucial in underground environments where lighting is poor, manual positioning is prone to errors, or complex electronic positioning systems are susceptible to dust-related malfunctions. This mechanism ensures that the trolley always stops precisely at the preset position matched with the belt conveyor, guaranteeing accurate alignment of the coiled belt surface's joint, unfolding direction, and belt conveyor inlet. This eliminates the hassle of repeatedly adjusting the trolley's position and is particularly suitable for efficient docking in confined underground spaces.

[0014] Furthermore, the outer circumferential surfaces of support roller 1, support roller 2, auxiliary roller, clamping roller 1, and clamping roller 2 are all fitted with rubber sleeves. These directly protect the coiled strip surface, preventing scratches and damage from the metal rollers. If the support rollers and auxiliary rollers are made of metal, their outer circumferential surfaces may have burrs, sharp edges, or show signs of rust and wear due to long-term use. When in direct contact with the coiled strip surface, they can easily scratch the outer rubber layer of the strip surface and even damage the structure at the joint. The rubber sleeves, however, are soft and smooth, forming a buffer protective layer that changes the contact between the roller and the strip surface from hard to soft, completely preventing scratches and indentations, ensuring the integrity of the strip surface, and extending its service life.

[0015] As can be seen from the above technical solutions, the advantages of this utility model are: 1. Improve transportation safety by using support roller 1 and support roller 2 for support, and auxiliary roller and clamping roller 1 and clamping roller 2 for double-sided limiting to prevent the coiled strip from swinging or rolling off, thus eliminating safety hazards; 2. Achieve precise alignment by using guide rails, stop blocks, and gap guidance to ensure the belt surface accurately reaches the position on the conveyor belt, reducing adjustment steps; 3. Protect the integrity of the belt surface. The outer rubber sleeve prevents the belt surface from being scratched. The gap is adapted to the joint thickness to prevent damage and extend the belt surface life. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description 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.

[0017] Figure 1 This is a front view schematic diagram of a specific embodiment of the present utility model; Figure 2 This is a side view schematic diagram of a specific embodiment of the present utility model; Figure 3 for Figure 2 A top-down view.

[0018] In the diagram: 1. Monorail lifting beam; 2. Clamping roller one; 3. Clamping roller two; 4. Support trolley; 5. Traveling wheel; 6. Hydraulic pipe; 7. Hydraulic cylinder; 8. Control valve; 9. Car stop block; 10. Fastening bolt; 11. Guide rail; 12. Auxiliary roller; 13. Support roller one; 14. Support roller two; 15. Coiled strip surface; 16. Fixed seat; 17. Joint. Detailed Implementation

[0019] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0020] A belt conveyor for conveying belts, such as Figure 1-3 As shown, the system includes a support trolley 4, with two guide rails 11 positioned below it. These two guide rails 11 are parallel to each other and fixed to the tunnel floor, forming a moving track for the support trolley 4. One end of each guide rail 11 extends directly below the monorail lifting beam 1, supporting the trolley 4 to rest there and receive the coiled strip surface 15 lifted by the monorail lifting beam 1. The other end extends to the bottom of the belt conveyor, supporting the trolley 4 to move there to complete the docking operation between the coiled strip surface 15 and the belt conveyor. The guide rails 11 define a complete transport path for the support trolley 4.

[0021] The support trolley 4 includes a base frame and uprights. The base frame has a rectangular frame structure. Uprights are welded at the four corners of the base frame. The uprights are vertically arranged, and the top of the uprights is used to install the subsequent support mechanism, namely support roller 13, support roller 24, auxiliary roller 12, clamping roller 12, and clamping roller 23. Through the cooperation of the base frame and the uprights, a stable load-bearing frame for the support trolley 4 is formed.

[0022] The base frame supporting the trolley 4 is rotatably connected to the traveling wheels 5 via a connecting shaft. The connecting shaft passes laterally through the base frame in a direction perpendicular to the length of the guide rail 11. There are four traveling wheels 5 in total, each fitted onto one end of the connecting shaft and evenly distributed on the two guide rails 11. Two traveling wheels 5 are on each guide rail 11, ensuring that the supporting trolley 4 is subjected to balanced force. The outer circumference of the traveling wheels 5 is provided with an annular groove. The width of the groove is adapted to the thickness of the guide rail 11, and the groove and the guide rail 11 form a tight snap-fit, which can effectively limit the offset of the traveling wheels 5 along the width direction of the guide rail 11, ensuring that the traveling wheels 5 will not disengage from the guide rail 11 when moving on the guide rail 11, further ensuring the stability of the moving trolley 4.

[0023] To drive the support trolley 4 to move along the guide rail 11, a hydraulic cylinder 7 is installed on the outer side of the support trolley 4. The axis of the hydraulic cylinder 7 is aligned with the length direction of the guide rail 11 to ensure that the thrust of the hydraulic cylinder 7 can be accurately transmitted along the moving direction of the support trolley 4, avoiding lateral forces that could cause the support trolley 4 to deviate. The cylinder barrel of the hydraulic cylinder 7 is fixedly connected to the tunnel bolts via a fixing seat 16. The fixing seat 16 is specifically installed on the side wall of the tunnel near the guide rail 11 to ensure that the hydraulic cylinder 7 is securely installed and does not affect the movement of the support trolley 4. The piston rod end of the hydraulic cylinder 7 is fixedly connected to the side of the base frame of the support trolley 4 via bolts, realizing the direct transmission of power to the support trolley 4. The hydraulic cylinder 7 is equipped with a control valve 8 on its exterior. The control valve 8 is connected to the hydraulic cylinder 7 through a hydraulic pipe 6. The hydraulic pipe 6 is arranged along the side wall of the tunnel or the side of the guide rail 11 to avoid interference with the support trolley 4 and the traveling wheels 5. The operator can adjust the flow of hydraulic oil in the hydraulic cylinder 7 through the control valve 8, thereby controlling the extension and retraction speed and start and stop of the piston rod, adapting to the different needs of the support trolley 4 moving between the hoisting position and the docking position.

[0024] To ensure the support trolley 4 accurately stops at the docking position of the belt conveyor, a limit mechanism is installed on the guide rail 11. This limit mechanism includes a stop block 9, which is located at the top of the guide rail 11 and fixedly connected to it by fastening bolts 10. Specifically, the stop block 9 is located at the end of the guide rail 11 closest to the belt conveyor, and its height is higher than the top surface of the guide rail 11. When the support trolley 4 moves along the guide rail 11 to the docking position, the end face of the travel wheel 5 of the support trolley 4 abuts against the side of the stop block 9, forming a blockage. This ensures that the support trolley 4 accurately stops at the preset position matched with the belt conveyor each time, eliminating the need for repeated manual adjustments. Furthermore, a buffer pad and a pressure sensor are installed on the side of the stop block 9 near the travel wheel 5. The buffer pad prevents rigid impact from the travel wheel 5, and the pressure sensor can detect the collision pressure of the travel wheel 5 in a timely manner, thereby adjusting the control valve 8 accordingly.

[0025] The support mechanism on the support trolley 4 is used to stably support the coiled strip surface 15. The support mechanism includes a first support roller 13, a second support roller 14, an auxiliary roller 12, a first clamping roller 2, and a second clamping roller 3. Each roller is rotatably mounted on the top of the column via bearing seats, ensuring that the rollers can rotate flexibly and reducing frictional damage to the coiled strip surface 15. Among them, the first support roller 13 and the second support roller 14 are horizontally spaced along the length of the guide rail 11. The first support roller 13 and the second support roller 14 are parallel to each other and have the same height. Their axes are on the same horizontal plane. The length direction of the first support roller 13 and the second support roller 14 is the same as the length direction of the guide rail 11, and the interval between them is set according to the length of the coiled strip surface 15. They can jointly support the coiled strip surface 15 and avoid deformation caused by uneven local stress on the coiled strip surface 15. Both the outer circumferential surfaces of support roller 13 and support roller 2 are fitted with rubber sleeves. The rubber sleeves have smooth surfaces and a certain degree of elasticity, which can prevent the metal rollers from directly contacting and scratching the coiled strip surface 15, and also increase the friction with the coiled strip surface 15 to prevent the coiled strip surface 15 from slipping on the rollers.

[0026] The outer circumferential surface of the auxiliary roller 12 is also fitted with a rubber sleeve. The auxiliary roller 12 is located on one side of the support trolley 4, that is, the side away from the two clamping rollers. The auxiliary roller 12 is arranged parallel to the support roller 13, and the auxiliary roller 12 is mounted on the column by a bracket. When the support roller 13 and the support roller 2 14 support the coiled strip surface 15, the axial height of the auxiliary roller 12 is higher than the axial height of the coiled strip surface 15, so that the outer circumferential surface of the auxiliary roller 12 can fit against the lateral outer periphery of the coiled strip surface 15, forming a block on one side of the coiled strip surface 15 to prevent the coiled strip surface 15 from moving in its own radial direction, that is, in a direction perpendicular to the length of the guide rail 11.

[0027] Both clamping roller 1 (2) and clamping roller 2 (3) have rubber sleeves fitted on their outer circumferential surfaces. Clamping roller 1 (2) and clamping roller 2 (3) are located on the other side of the supporting trolley 4, that is, the side away from the auxiliary roller 12. Clamping roller 1 (2) and clamping roller 2 (3) are parallel to each other and are both arranged parallel to the supporting roller 1 (13). Both are also mounted on the column via brackets. When the supporting roller 1 (13) and supporting roller 2 (2) support the coiled strip surface 15, the axial height of both clamping roller 1 (2) and clamping roller 2 (3) is higher than the axial height of the coiled strip surface 15. Simultaneously, clamping roller 1 (2) is located directly above clamping roller 2 (3), forming a vertical gap between them. The width of the gap is 2mm larger than the thickness of the joint 17 of the coiled belt surface 15. This size design will not cause the joint 17 to shift when the coiled belt surface 15 is unrolled due to the gap being too wide, thus avoiding the joint 17 from deviating from the docking position of the belt conveyor and reducing manual adjustment steps. It will also prevent the joint 17 from getting stuck due to the gap being too narrow, allowing the joint 17 to be stably conveyed forward along the constraint channel formed by the gap, ensuring that the coiled belt surface 15 is accurately docked with the belt conveyor.

[0028] Working process: The operator adjusts the control valve 8 to control the hydraulic oil to enter the hydraulic cylinder 7 through the hydraulic pipe 6, causing the piston rod of the hydraulic cylinder 7 to extend and push the support trolley 4 to move along the guide rail 11 directly below the monorail beam 1. During the movement, the traveling wheels 5 at the bottom of the support trolley 4 are engaged with the guide rail 11 through the grooves on their outer circumferences, ensuring that the support trolley 4 moves stably along the guide rail 11 and does not detach from the guide rail 11. When the support trolley 4 reaches directly below the monorail beam 1, the operator adjusts the control valve 8 to stop the hydraulic cylinder 7 from moving. Then, the monorail beam 1 slowly lifts the coiled strip surface 15 between the support roller 13 and the support roller 2 14 on the support trolley 4. The coiled strip surface 15 is supported by the support roller 13 and the support roller 2 14. At the same time, the auxiliary roller 12 and the clamping roller 12 and the clamping roller 2 3 respectively form a limit from both sides of the coiled strip surface 15 to prevent the coiled strip surface 15 from moving radially.

[0029] After the coiled belt surface 15 is placed securely, the operator adjusts the control valve 8 again to retract the piston rod of the hydraulic cylinder 7, pulling the support trolley 4 along the guide rail 11 towards the bottom of the belt conveyor. During transportation, the auxiliary roller 12 continuously contacts one side of the coiled belt surface 15, and the clamping roller 1 2 and clamping roller 2 3 continuously contact the other side of the coiled belt surface 15, jointly restricting the radial rolling of the coiled belt surface 15; the traveling wheel 5 always moves along the guide rail 11 to ensure the overall stability of the support trolley 4 and prevent the coiled belt surface 15 from shaking or shifting.

[0030] When the support trolley 4 moves to a position close to the belt conveyor, the end face of the traveling wheel 5 of the support trolley 4 contacts the side of the stop block 9 on the guide rail 11. The buffer pad on the stop block 9 alleviates the rigid impact between the traveling wheel 5 and the stop block 9. At the same time, the pressure sensor detects the collision pressure and feeds back a signal. The operator adjusts the control valve 8 according to the signal to stop the hydraulic cylinder 7. The support trolley 4 stops precisely at the preset position matched with the belt conveyor. Then the operator unrolls the coiled belt surface 15, allowing the joint 17 of the coiled belt surface 15 to pass through the gap between the clamping roller 1 2 and the clamping roller 2 3. The gap guides the joint 17, ensuring that the joint is accurately connected to the belt conveyor, completing the transportation and connection operation of the coiled belt surface 15.

[0031] As can be seen from the above embodiments, the beneficial effects of this utility model are as follows: 1. Improve transportation safety by using support roller 1 and support roller 2 for support, and auxiliary roller and clamping roller 1 and clamping roller 2 for double-sided limiting to prevent the coiled strip from swinging or rolling off, thus eliminating safety hazards; 2. Achieve precise alignment by using guide rails, stop blocks, and gap guidance to ensure the belt surface accurately reaches the position on the conveyor belt, reducing adjustment steps; 3. Protect the integrity of the belt surface. The outer rubber sleeve prevents the belt surface from being scratched. The gap is adapted to the joint thickness to prevent damage and extend the belt surface life.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A belt conveyor for a belt conveyor, characterized in that, The system includes a support trolley (4), on which support roller 1 (13) and support roller 2 (14) are arranged at intervals along the horizontal direction. Support roller 1 (13) and support roller 2 (14) are parallel to each other and have the same height. Support roller 1 (13) and support roller 2 (14) can jointly support the coiled strip surface (15). A guide rail (11) is provided below the support trolley (4). The support trolley (4) can move to the direct underside of the monorail beam (1) through the guide rail (11). A limit mechanism is provided on the guide rail (11). The limit mechanism can restrict the support trolley (4) to a predetermined position.

2. The belt conveyor for belt conveyors according to claim 1, characterized in that, An auxiliary roller (12) is provided on the support trolley (4). The auxiliary roller (12) is located on one side of the support trolley (4). The auxiliary roller (12) is arranged parallel to the first support roller (13). When the first support roller (13) and the second support roller (14) support the coiled strip surface (15), the axial height of the auxiliary roller (12) is higher than the axial height of the coiled strip surface (15).

3. The belt conveyor for belt conveyors according to claim 2, characterized in that, The support trolley (4) is also equipped with clamping roller 1 (2) and clamping roller 2 (3). The clamping roller 1 (2) and clamping roller 2 (3) are located on the other side of the support trolley (4). The clamping roller 1 (2) and clamping roller 2 (3) are parallel to each other and are set parallel to the support roller 1 (13). When the support roller 1 (13) and support roller 2 (14) support the coiled strip surface (15), the axial height of the clamping roller 1 (2) and clamping roller 2 (3) is higher than the axial height of the coiled strip surface (15). The clamping roller 1 (2) is located above the clamping roller 2 (3). There is a gap between the clamping roller 1 (2) and clamping roller 2 (3).

4. The belt conveyor for belt conveyors according to claim 3, characterized in that, The gap width between clamping roller 1 (2) and clamping roller 2 (3) is 2 mm larger than the thickness of the joint (17) of the coiled strip surface (15).

5. The belt conveyor for belt conveyors according to claim 1, characterized in that, The bottom of the supporting trolley (4) is rotatably connected to a traveling wheel (5). The outer circumferential surface of the traveling wheel (5) is provided with a groove, which is engaged with the guide rail (11).

6. The belt conveyor for belt conveyors according to claim 1, characterized in that, A hydraulic cylinder (7) is provided on the outside of the support trolley (4). The axis of the hydraulic cylinder (7) is the same as the length direction of the guide rail (11). The piston rod end of the hydraulic cylinder (7) is fixedly connected to the support trolley (4). A control valve (8) is provided on the outside of the hydraulic cylinder (7). The control valve (8) is connected to the hydraulic cylinder (7) through the hydraulic pipe (6).

7. The belt conveyor for belt conveyors according to claim 1, characterized in that, The limiting mechanism includes a vehicle blocking block (9), which is set on the guide rail (11) and can block the traveling wheels (5) supporting the trolley (4).

8. The belt conveyor for belt conveyors according to claim 3, characterized in that, The outer circumferences of support roller 1 (13), support roller 2 (14), auxiliary roller (12), clamping roller 1 (2) and clamping roller 2 (3) are all fitted with rubber sleeves.

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