Special device for overhauling and transferring roller of suspension cable belt conveyor in circular storage yard and auxiliary device of special device

Abstract

The utility model relates to the field of belt conveyor equipment maintenance, and discloses a special device for overhauling and transferring a roller of a suspension cable belt conveyor in a circular storage yard and an auxiliary device of the special device. A head overhauling platform is arranged above the circular storage yard, and a head unloading roller is arranged in the head overhauling platform; the transfer trolley can travel back and forth along the track under the action of the traction device, the track is arranged on the truss and extends to a target station from the interior of the head maintenance platform, the target station and the circular storage yard are not overlapped in the height direction, and the head unloading roller can be placed on the transfer trolley. The utility model has the beneficial effects that the difficulty of overhaul operation is reduced, the head unloading roller can be comprehensively overhauled and replaced, the head unloading roller can be conveniently transferred to the ground by using hoisting equipment, and the head unloading roller is easy to disassemble.

Description

Technical Field

[0001] This utility model relates to the field of belt conveyor equipment maintenance, and in particular to a special device for the maintenance and transfer of rollers of a circular stockpile suspension belt conveyor and its auxiliary devices. Background Technology

[0002] Suspension belt conveyors, due to their unique suspension support structure, are widely used for high-altitude, large-span (50-150 meters) material conveying in circular stockpiles for coal, ore, and other materials. Circular stockpile suspension belt conveyors are a type of suspension belt conveyor that uses a suspension structure to support the conveyor belt, featuring large spans and high load capacities. However, their core components (such as the drive roller and head discharge roller) require regular maintenance or replacement due to long-term impact loads and wear. However, the following problems arise during the maintenance or replacement of the head discharge roller:

[0003] (1) High difficulty of operation: The head unloading roller is mostly located in the head maintenance platform which is suspended. In traditional maintenance work, the operator will enter the head maintenance platform to operate. However, the space inside the head maintenance platform is small, and the maintenance operation is difficult. The head unloading roller has a large tonnage, and due to space limitations, it can only perform simple surface maintenance inside the head maintenance platform, making it difficult to carry out comprehensive maintenance.

[0004] (2) Limited hoisting equipment makes it difficult to directly transfer the head unloading roller at the head maintenance platform: The head maintenance platform where the head unloading roller is located is usually located above the circular yard. The enclosed structure and layout of the circular yard make it difficult for cranes to enter the work area. If large-tonnage cranes are used, the rental cost is high, and large-tonnage cranes are special equipment and the number is relatively small.

[0005] (3) The traditional method of disassembling the head unloading roller is labor-intensive, time-consuming and labor-intensive. Utility Model Content

[0006] To overcome the problems mentioned above, this utility model provides a special device for the maintenance and transfer of rollers on a circular stockpile suspension belt conveyor and its auxiliary devices. With the help of the transfer trolley and auxiliary devices, the head unloading roller can be transferred to an easy-to-lift position more conveniently. It has the beneficial effects of reducing the difficulty of maintenance operations, enabling the head unloading roller to be fully inspected and replaced, facilitating the use of lifting equipment to transfer the head unloading roller to the ground, and making the head unloading roller easy to disassemble.

[0007] The technical solution of this utility model is as follows:

[0008] A special device for maintenance and transfer of rollers on a suspension belt conveyor in a circular stockpile includes a head maintenance platform located above the circular stockpile, a head unloading roller installed inside the head maintenance platform, and a transfer trolley. The transfer trolley can travel back and forth along a track under the action of a traction device. The track is arranged on a truss and extends from inside the head maintenance platform to the target work station. The target work station does not overlap with the circular stockpile in the height direction. The head unloading roller can be placed on the transfer trolley.

[0009] Compared with existing technologies, the beneficial effects of this technical solution are as follows:

[0010] By using a transfer trolley to move the head unloading roller from the head maintenance platform to the target workstation, the problems of high difficulty and incomplete maintenance of the head unloading roller within the head maintenance platform in the prior art are avoided. This has the advantages of reducing the difficulty and intensity of operation, and making it easier to carry out a comprehensive maintenance and replacement of the head unloading roller. By setting the target workstation to be non-overlapping with the circular stockpile in the height direction, the problem of cranes being unable to carry out lifting operations within the circular stockpile area and being unable to directly transfer the head unloading roller at the head maintenance platform is solved. The crane can lift the head unloading roller at a location far away from the circular stockpile.

[0011] Preferably, the transfer trolley includes a body for placing the head unloading roller and wheels installed at the bottom of the body. The body has a placement groove that mates with the head unloading roller, and a rubber pad is arranged on the surface of the placement groove. The surface of the head unloading roller is also wrapped with a chain for binding, and the chain is fixedly connected to the body. The wheels are connected to a track and can roll on the track. An anti-tipping wheel is fixed under the body, and the anti-tipping wheel is horizontally arranged and mates with the inner side of the track.

[0012] Its beneficial effects are as follows: the placement of the trough, rubber pad, and chain can prevent the head unloading roller from moving, ensuring the stability and safety of the head unloading roller during the transfer process; the wheels on both sides of the transfer trolley can roll on their respective tracks, driving the transfer trolley to travel on the tracks.

[0013] Preferably, the traction device includes a traction winch and a pulley, which are located on the trusses outside the beginning and end of the track, respectively. The traction rope of the traction winch is wound around both the traction winch and the pulley, and the two ends of the traction rope are fixedly connected to the front and rear sides of the transfer trolley, respectively.

[0014] Its beneficial effects are as follows: when the traction device pulls the transfer trolley to move, the control system controls the motor to rotate forward or backward, driving the drum to rotate clockwise or counterclockwise. The traction rope winds around the drum surface layer by layer according to the spiral trajectory, thereby generating a forward or backward pulling force on the transfer trolley, enabling the transfer trolley to travel back and forth on the track and transfer the unloading drum at the head. The setting position of the dual-speed multi-purpose winch and pulley can avoid affecting the normal travel of the transfer trolley on the track.

[0015] In a further preferred embodiment, the two ends of the traction rope are fixedly connected to the middle of the front and rear sides of the transfer trolley by rope clamps; the traction winch and pulley are fixed to the truss by the base; the height difference between the two sides of the track can be balanced by the pad at the bottom.

[0016] Its beneficial effects are as follows: by setting the two ends of the traction rope to be fixedly connected to the middle of the front and rear sides of the transfer trolley with rope clamps, the force balance on the left and right sides of the transfer trolley can be ensured. The rope clamps are used to fix the traction rope and the transfer trolley. The height difference between the two rails can be balanced by raising the track with pads, so as to avoid affecting the balance of the transfer trolley and causing safety accidents.

[0017] In a further preferred embodiment, baffles are fixed at both ends of the track to limit the excessive displacement of the transfer trolley, and several rope-pressing wheels are arranged on the truss. The traction rope passes around the rope-pressing wheels, and the rope-pressing wheels guide the direction of the traction rope.

[0018] Its beneficial effects are: the baffle can limit the excessive displacement of the transfer trolley; the rope pressing wheel can guide, press and adjust the running trajectory of the traction rope, ensuring its stable operation and preventing derailment and slack.

[0019] Based on the above technical solution, this utility model also provides another technical solution:

[0020] An auxiliary device for a special device for maintenance and transfer of rollers of a circular stockpile suspension belt conveyor includes an auxiliary device used in conjunction with a transfer trolley. The auxiliary device includes a slack device and a lifting device. The slack device releases the tension of the conveyor belt, and the lifting device sends the head unloading roller onto the transfer trolley.

[0021] The beneficial effects of this technical solution are as follows:

[0022] By setting a slack device, the conveyor belt can be loosened, making it easier to separate the conveyor belt from the head discharge roller. The separated head discharge roller is then sent to the transfer trolley by the lifting device, which can reduce the labor intensity of disassembling the head discharge roller and reduce the disassembly time. Thus, the transfer trolley and auxiliary devices work together to make it easier to disassemble and transfer the head discharge roller.

[0023] Preferably, the slack device includes a manual hoist and a sling. The manual hoist is fixed directly above the tensioning device of the belt conveyor, and the sling can be used to attach to the tensioning device. The hook of the manual hoist is connected to the sling to lift the tensioning device upward and release the tension of the conveyor belt.

[0024] Its beneficial effects are as follows: the manual hoist is connected to the sling of the tensioning device by the hook, and the tensioning device is lifted upward to release the tension of the conveyor belt, which makes it easier to separate the head unloading roller from the conveyor belt.

[0025] More preferably, the relaxation device further includes a fixing device, which includes two sets of clamping devices for clamping and fixing the upper conveyor belt and the lower conveyor belt respectively. The clamping device for clamping the lower conveyor belt is installed on the truss on the side of the manual hoist away from the head unloading roller, and the clamping device for clamping the upper conveyor belt is installed on the truss near the head unloading roller platform.

[0026] Its beneficial effects are as follows: Since the clamping device fixes the lower conveyor belt away from the head discharge roller and the upper conveyor belt near the head discharge roller, it only releases the tension of the conveyor belt between the two fixed positions and avoids the influence of the self-weight of the conveyor belt in other positions, which can greatly reduce the tension of the conveyor belt wrapped around the head discharge roller, making it easier to remove the head discharge roller.

[0027] Preferably, the lifting device includes an electric hoist and a sling arranged in the head maintenance platform. The sling can be attached to the head unloading roller. The hook of the electric hoist is connected to the sling to lift the head unloading roller upward and send it to the transfer trolley.

[0028] More preferably, the head unloading roller platform is provided with a slide rail for moving an electric hoist, and the electric hoist can slide along the slide rail from directly above the head unloading roller to directly above the position of the transfer trolley when it reaches the head maintenance platform.

[0029] Its beneficial effect is that the electric hoist can slide along the slide rail from directly above the head unloading roller to directly above the position of the transfer trolley within the head maintenance platform, thereby realizing the transfer of the head unloading roller. Attached Figure Description

[0030] This utility model will be described with reference to the accompanying drawings, wherein:

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 for Figure 1 Enlarged schematic diagram of the local structure at point A;

[0033] Figure 3 for Figure 1 Enlarged schematic diagram of the local structure at point B;

[0034] Figure 4 This is a side view of the transfer trolley of this utility model when it is traveling on the track;

[0035] Figure 5 This is a top view of the transfer trolley of this utility model traveling on the track;

[0036] Figure 6 This is a front view of the transfer trolley of this utility model traveling on the track;

[0037] Figure 7 This is a schematic diagram of the structure of the head unloading roller of the head inspection platform of this utility model being lifted.

[0038] Attached reference numerals: 1. Circular stockpile; 11. Truss; 111. Upper crossbeam; 112. Upper idler roller assembly; 113. Lower idler roller assembly; 12. Head maintenance platform; 13. Head unloading roller; 14. Main frame; 15. Sub-frame; 16. Upper conveyor belt; 17. Lower conveyor belt; 18. Target workstation; 2. Transfer trolley; 21. Track; 22. Car body; 23. Wheel; 24. Placement trough; 25. Connecting hole; 26. Rope clamp; 27. Anti-tipping wheel; 38. Dual-speed multi-purpose winch; 39. Pulley; 31. Traction rope; 32. Drum; 33. Base; 34. Pad; 35. Baffle; 36. Rope pressing wheel; 37. 10T manual hoist; 41. Vertical counterweight tensioning device; 42. Hydraulic clamping device; 43. Lifting device; 5. Electric hoist; 51. Slide rail; 52. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0040] Example 1: As Figures 1 to 7 The diagram illustrates a special device for the maintenance and transfer of rollers on a circular stockpile suspension belt conveyor. The head unloading roller 13 is installed within a head maintenance platform 12, which is suspended above the circular stockpile 1 via a truss 11. The truss 11 is suspended and fixed between the main frame 14 and the auxiliary frame 15 of the suspension belt conveyor. Maintenance personnel can access the head maintenance platform 12 via maintenance walkways on both sides of the truss 11. In this embodiment, the transfer device includes a transfer trolley 2, which can travel back and forth along a track 21 under the action of a traction device. Figure 6As shown, track 21 is fixed to several upper crossbeams 111 on truss 11. The upper crossbeams 111 are vertically fixed to the top two sides of truss 11. Below the upper crossbeams 111 are an upper conveyor belt 16 and a lower conveyor belt 17 arranged inside truss 11 and supported by roller sets. The roller sets include upper roller sets 112 and lower roller sets 113. The upper conveyor belt 16 is laid on the upper roller sets 112, and the lower conveyor belt 17 is laid on the lower roller sets 113. Track 21 extends along the length of truss 11 and extends from the truss 11 inside the head maintenance platform 12 to the truss 11 at the target work station 18. The position of the truss 11 at the target work station 18 does not overlap with the circular storage yard 1 in height, that is, the vertical downward projection of the truss 11 at the target work station 18 will not fall on the circular storage yard 1.

[0041] When transferring the head unloading roller 13, the head unloading roller 13 in the head maintenance platform 12 is placed on the transfer trolley 2. The transfer trolley 2 then travels along the track 21 from the head maintenance platform 12 to the target station 18. The head unloading roller 13 is then lifted from the transfer trolley 2 to the ground by a crane below the target station 18 or by an electric hoist with a cantilever beam structure added to the truss 11 at the target station 18. After maintenance or replacement, the head unloading roller 13 is lifted again by a crane or electric hoist to the transfer trolley 2 at the target station 18. The transfer trolley 2 then travels back to the head maintenance platform 12 and the head unloading roller 13 is reinstalled.

[0042] By using the transfer trolley 2 to move the head unloading roller 13 from the head maintenance platform 12 to the target station 18, the problem of high difficulty and difficulty in fully inspecting the head unloading roller 13 within the head maintenance platform 12 in the prior art is avoided. This has the advantages of reducing the difficulty and intensity of operation, and making it easier to fully inspect and replace the head unloading roller 13. By setting the target station 18 to be non-overlapping with the circular stockpile 1 in the height direction, the problem of the crane being unable to carry out lifting operations within the area of ​​the circular stockpile 1 and being unable to directly transfer the head unloading roller at the head maintenance platform is solved. The crane can lift the head unloading roller 13 at a position far away from the circular stockpile 1.

[0043] Example 2: Based on Example 1, the transfer trolley 2 is optimized and designed, such as... Figures 4 to 6As shown, the transfer trolley 2 includes a body 22 for placing the head unloading roller 13 and wheels 23 installed at the bottom of the body 22. The body 22 has a placement groove 24, the size of which matches the semi-cylindrical shape of the head unloading roller 13. The head unloading roller 13 is placed horizontally in the placement groove 24. Rubber pads are also attached and fixed to the sides and two bottom surfaces of the placement groove 24. The part of the head unloading roller 13 located in the placement groove 24 is in close contact with the rubber pads, which provides cushioning protection for the head unloading roller 13. The surface of the head unloading roller 13 is also wrapped with a chain for binding. The chain is fixedly connected to the body 22, which can completely prevent the head unloading roller 13 from moving and ensure the stability and safety of the head unloading roller 13 during the transfer process.

[0044] Four wheels 23 are located on the front and rear sides of the bottom of the vehicle body 22, ensuring the support stability of the transfer trolley 2. Two parallel steel rails can be used for the track 21. The wheels 23 have circumferential grooves, into which the track 21 engages and connects. The wheels 23 on both sides of the transfer trolley 2 can roll on their respective tracks 21, driving the transfer trolley 2 along the track 21. Anti-tipping wheels 27 are fixed below the vehicle body 22. These anti-tipping wheels 27 are horizontally arranged and engage with the inner surface of the track 21. The anti-tipping wheels 27 are horizontally arranged wheel structures, with their axles fixed to the bottom of the vehicle body 22 via a vertically arranged connecting shaft 271. The anti-tipping wheels 27 can roll along the inner surface of the track 21 when the transfer trolley 2 is moving. Four sets of anti-tipping wheels 27 are located near the inner sides of the four wheels 23, but do not contact the wheels. By setting up the anti-tipping wheels 27, the transfer trolley 2 can be prevented from tipping over during operation, thus preventing serious safety accidents.

[0045] Example 3: Based on Example 1, the traction device is optimized and designed, such as... Figures 4 to 6As shown, the traction device includes a traction winch and a pulley 31. The traction winch and pulley 31 are located on the truss 11 at both ends of the track 21, respectively. The traction rope 32 of the traction winch is wound around both the traction winch and the pulley 31. A traction winch is a mechanical device that uses a drum 33 to wind a steel wire rope or chain to pull, lift, or drag heavy objects. It is widely used in engineering, rescue, shipbuilding, mining, and other fields. It mainly includes a power unit (which can be an electric motor), a control system, a drum 33, and a traction rope 32, which can be made of steel wire rope. In this embodiment, a dual-speed multi-purpose winch 3 is used as the traction winch. The traction rope 32 is wound around the drum 33 of the dual-speed multi-purpose winch 3. Two rope ends extend from both sides of the drum 33. One rope end extends along the track 21 to the front end of the transfer trolley 2 and is fixedly connected thereto. The other rope end extends from the drum 33, extends along the track 21 to the pulley 31, and then passes around the pulley 31 and is fixed to the rear end of the transfer trolley 2. The pulley 31 can adjust the traction direction to adapt to different working conditions. Thus, when the traction device pulls the transfer trolley 2, the control system controls the motor to rotate forward or backward, driving the drum 33 to rotate clockwise or counterclockwise. The traction rope 32 winds around the surface of the drum 33 layer by layer according to a spiral trajectory, thereby generating a forward or backward pulling force on the transfer trolley 2, allowing the transfer trolley 2 to travel back and forth on the track 21 and transfer the unloading drum 13 at the head.

[0046] Preferably, the two ends of the traction rope 32 are fixedly connected to the middle of the front and rear sides of the transfer trolley 2, respectively. That is, the two ends of the traction rope 32 pass through the connecting holes 25 on the front and rear sides of the transfer trolley 2, and are then fixed by rope clips 26. The connecting holes 25 are located on the line connecting the midpoints of the upper and lower sides of the front or rear side of the transfer trolley 2, which can ensure that the left and right sides of the transfer trolley 2 are balanced. The rope clip 26 is a connector used to fix the end of the wire rope or connect two wire ropes. Its function is to ensure a firm connection and prevent slippage. In this embodiment, the rope clip 26 can be a U-shaped rope clip 26, a heavy-duty rope clip 26, or a double-clamp rope clip 26.

[0047] Bases 34 are fixedly installed on the upper crossbeams 111 of the truss 11 at both ends of the track 21. The two bases 34 are used to install the dual-speed multi-purpose winch 3 and the pulley 31, and their installation position can avoid affecting the normal travel of the transfer trolley 2 on the track 21. The height difference between the two sides of the track 21 can be balanced by the pads 35 at the bottom. Due to terrain or installation limitations, the two sides of the truss 11 may not be at the same height. Therefore, the upper crossbeam 111 arranged between the two sides of the truss 11 may be tilted, causing the rails on both sides of the track 21 to be at different heights, which will affect the balance of the transfer trolley 2. Therefore, pads 35 can be fixed on the rail on the lower side. The height of the pads 35 is arranged according to the actual situation. By raising the track 21 with the pads 35, the height difference between the two rails of the track 21 can be balanced, avoiding affecting the balance of the transfer trolley 2 and causing safety accidents.

[0048] Further preferably, baffles 36 are fixed at both ends of the track 21. These baffles 36 are vertically fixed to both ends of the rails of the track 21, and can limit the excessive displacement of the transfer trolley 2. Several rope pressing wheels 37 are arranged on the upper crossbeam 111 of the truss 11 between the dual-speed multi-purpose winch 3 and the pulley 31. The rope pressing wheels 37 (also known as rope pressing rollers or rope guide wheels) are important components of the wire rope transmission system, mainly including a support frame, a wheel body, and bearings and shafts. The wheel body is installed in the support frame through bearings and shafts and can rotate around the shaft. In this embodiment, the traction rope 32 passes around the wheel body, and the rope pressing wheels 37 can guide, press, and adjust the running trajectory of the traction rope 32 to ensure its stable operation and prevent derailment and slack.

[0049] Example 4: Based on the above examples, this example provides an auxiliary device for a special device for the maintenance and transfer of rollers on a circular stockpile suspension belt conveyor. The auxiliary device works in conjunction with the transfer trolley 2 to disassemble the head unloading roller 13 and place it onto the transfer trolley 2 for further transfer. The auxiliary device includes a slack device and a lifting device 5. Under normal circumstances, the conveyor belt is kept at a certain tension and fixed to the head unloading roller 13. In this state, it is difficult to peel the conveyor belt off the head unloading roller 13. By setting up the slack device, the conveyor belt can be loosened, making it easier to separate the conveyor belt from the head unloading roller 13. After separation, the head unloading roller 13 is then sent to the transfer trolley 2 via the lifting device 5. This reduces the labor intensity and disassembly time required to disassemble the head unloading roller 13. Therefore, the transfer trolley 2, in conjunction with the auxiliary device, facilitates the disassembly and transfer of the head unloading roller 13.

[0050] Example 5: Based on Example 4, the slack device is optimized. The slack device includes a manual hoist and a sling. The manual hoist is a lightweight lifting device that lifts or moves heavy objects by pulling the chain. The manual hoist is fixed directly above the tensioning device of the belt conveyor. In this example, a 10T manual hoist 41 can be used as the manual hoist, and a steel wire rope can be used as the sling. The tensioning device is the core component in the belt conveyor used to maintain the initial tension of the belt and provide tension force under different working conditions. In this embodiment, the tensioning device is a vertical counterweight tensioning device 42, which includes rollers and counterweight blocks, and is located in the sub-frame 15 below the truss 11 of the belt conveyor tension section. The 10T manual hoist 41 is located at the top of the sub-frame 15. The weight of the vertical counterweight tensioning device 42 can ensure that the belt conveyor has sufficient initial tension. The lower conveyor belt 17 is wound around the roller of the vertical counterweight tensioning device 42 and is pulled downward by it. By lifting the entire vertical counterweight tensioning device 42 upward, the conveyor belt can be completely relaxed. When it is necessary to transfer the head unloading roller 13, the sling is used to secure the vertical counterweight tensioning device 42. Then, the hook of the 10T manual hoist 41 is lowered to hang the sling on the hook. The 10T manual hoist 41 lifts the vertical counterweight tensioning device 42 upward through the hook to release the tension of the conveyor belt. At this time, the head unloading roller can be separated from the conveyor belt.

[0051] Preferred, such as Figures 1 to 3 As shown, the slack device also includes a fixing device, which comprises two sets of clamping devices for clamping and fixing the upper conveyor belt 16 and the lower conveyor belt 17, respectively. The clamping device for the lower conveyor belt 17 is installed on a truss 11 on the side of the manual hoist away from the head unloading roller 13, while the clamping device for the upper conveyor belt 16 is installed on a truss 11 near the platform of the head unloading roller 13. That is, the manual hoist is located directly above the vertical counterweight tensioning device 42, and the head unloading roller 13 of the clamping devices for the lower conveyor belt 17 and the upper conveyor belt 16 are located on opposite sides of the manual hoist. The clamping device is a clamping and fixing device used in belt conveyor maintenance to fix the conveyor belt, adjust its position, or prevent slippage. It includes clamping blocks and a power unit. In this embodiment, a hydraulic clamping device 43 is used. The hydraulic cylinder in the hydraulic clamping device 43 controls the clamping blocks to extend and clamp the conveyor belt.

[0052] When the conveyor belt is loosened, some of the conveyor belts that are inclined towards the tail of the conveyor will slide significantly towards the tail of the conveyor under their own gravity. At this time, the conveyor belt at the head discharge roller 13 will still maintain a large tension and be wrapped around the head discharge roller 13, making it difficult to remove the head discharge roller 13. However, by setting a clamping device, specific positions of the lower conveyor belt 17 and the upper conveyor belt 16 can be fixed, reducing the tension of the conveyor belt wrapped around the head discharge roller 13. After the vertical counterweight tensioning device 42 is lifted upward, the tension of the lower conveyor belt 17 will be released. Since the hydraulic clamping device 43 fixes the lower conveyor belt 17 on the side away from the head unloading roller 13 of the vertical counterweight tensioning device 42 and fixes the upper conveyor belt 16 near the head unloading roller 13, only the tension of the conveyor belt between the two fixed positions will be released. The influence of the self-weight of the conveyor belt in other positions is avoided, which can greatly reduce the tension of the conveyor belt wrapped around the head unloading roller 13, making it easier to remove the head unloading roller 13.

[0053] Example 6: Based on Example 4, the lifting device 5 is optimized, such as... Figure 7 As shown, the lifting device 5 includes an electric hoist 51 and a sling arranged within the head maintenance platform 12. The sling can be used to secure the head unloading roller 13 and can be made of wire rope. The electric hoist 51 is a small, electrically driven lifting device. The hook of the electric hoist 51 extends downward and connects to the sling to lift the head unloading roller 13 upward and send it onto the transfer trolley 2. A slide rail 52 is provided below the top of the head maintenance platform 12 to allow the electric hoist 51 to move. The electric hoist 51 can slide along the slide rail 52 from directly above the head unloading roller 13 until the transfer trolley 2 reaches a position directly above the head maintenance platform 12. At the front end of the head unloading roller 13, a manual hoist and sling are provided within the head maintenance platform 12 to separate the conveyor belt wound around the surface of the head unloading roller 13. This manual hoist is a 5T manual hoist. When disassembling the head unloading roller 13, the maintenance personnel first connect the hook of the 5T manual hoist to the sling of the conveyor belt, lift the conveyor belt to separate it from the head unloading roller 13, then control the electric hoist 51 to move it directly above the head unloading roller 13, hook its hook onto the sling of the head unloading roller 13, disassemble the connecting accessories of the head unloading roller 13, adjust the direction of the roller, and finally control the electric hoist 51 to lift the head unloading roller 13 upwards and then move it horizontally along the slide rail 52 to the transfer trolley 2. This setting makes it easier to transfer the disassembled roller to the transfer trolley 2.

[0054] When performing a comprehensive overhaul or replacement of the head discharge roller 13, first empty the material from the conveyor, stop the machine and disconnect the power, hang a maintenance sign, then control the hydraulic clamping device 43 to fix the lower conveyor belt 17 and the upper conveyor belt 16 at specific positions respectively, then use slings to bind the vertical counterweight tensioning device 42, control the hook of the manual hoist to lower and hook the sling, and then lift the vertical counterweight tensioning device 42 upward to release the tension of the conveyor belt between the two sets of hydraulic clamping devices 43, so that it is in a relaxed state, reducing the tension of the conveyor belt wrapped around the head discharge roller 13. Then, use a 5T manual hoist to lift the conveyor belt and detach it from the head unloading roller 13. Then, control the electric hoist 51 to lift the head unloading roller 13 and send it to the transfer trolley 2. The transfer trolley 2 will send the head unloading roller 13 to the target work station 18. Finally, choose to use a crane or an electric hoist 51 with a cantilever beam structure added to the platform truss 11 to transfer the head unloading roller 13 to the ground for maintenance. Maintenance personnel can reach the target work station 18 through the maintenance walkways on both sides of the truss 11 and fix the hook of the crane or electric hoist to the lifting strap on the surface of the head unloading roller 13.

[0055] The above embodiments merely illustrate specific implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the technical solution of this application, and these all fall within the scope of protection of this application.

Claims

1. A special device for maintenance and transfer of rollers on a circular stockpile suspension belt conveyor, wherein a head maintenance platform (12) is arranged above the circular stockpile (1), and a head unloading roller (13) is installed inside the head maintenance platform (12), characterized in that: Includes a transfer trolley (2), which can travel back and forth along a track (21) under the action of a traction device. The track (21) is arranged on a truss (11) and extends from the head maintenance platform (12) to the target work station (18). The target work station (18) does not overlap with the circular stockpile (1) in the height direction. The head unloading roller (13) can be placed on the transfer trolley (2).

2. The special device for maintenance and transfer of rollers of a circular stockpile suspension belt conveyor according to claim 1, characterized in that: The transfer trolley (2) includes a body (22) for placing the head unloading roller (13) and wheels (23) installed at the bottom of the body (22). The body (22) has a placement groove (24) that cooperates with the head unloading roller (13). The surface of the placement groove (24) is covered with a rubber pad. The surface of the head unloading roller (13) is also wrapped with a chain for binding. The chain is fixedly connected to the body (22). The wheels (23) are connected to the track (21) and can roll on the track (21). An anti-tipping wheel (27) is fixed below the body (22). The anti-tipping wheel (27) is arranged horizontally and is connected to the inner side of the track (21).

3. The special device for maintenance and transfer of rollers of a circular stockpile suspension belt conveyor according to claim 1, characterized in that: The traction device includes a traction winch and a pulley (31). The traction winch and the pulley (31) are located on the truss (11) outside the beginning and end ends of the track (21). The traction rope (32) of the traction winch is wound around the traction winch and the pulley (31) at the same time, and the two ends of the traction rope (32) are fixedly connected to the front and rear sides of the transfer trolley (2).

4. A special device for maintenance and transfer of rollers on a circular stockpile suspension belt conveyor according to claim 3, characterized in that: The two ends of the traction rope (32) are fixedly connected to the middle of the front and rear sides of the transfer trolley (2) by rope clamps (26); the traction winch and pulley (31) are fixed on the truss (11) by the base (34); the height difference between the two sides of the track (21) can be balanced by the pad (35) at the bottom.

5. A special device for maintenance and transfer of rollers on a circular stockpile suspension belt conveyor according to claim 3, characterized in that: The track (21) is also fixed with baffles (36) at both ends to limit the excessive displacement of the transfer trolley (2), and several rope pressing wheels (37) are arranged on the truss (11). The traction rope (32) passes around the rope pressing wheel (37), and the rope pressing wheel (37) guides the direction of the traction rope (32).

6. An auxiliary device for a special device for the maintenance and transfer of rollers on a circular stockpile suspension belt conveyor, characterized in that: The device includes an auxiliary device for use with the transfer trolley (2) as described in claim 1, the auxiliary device including a slack device and a lifting device (5), the slack device releasing the tension of the conveyor belt, and the lifting device (5) delivering the head unloading roller (13) onto the transfer trolley (2).

7. The auxiliary device of the special device for maintenance and transfer of rollers of a circular stockpile suspension belt conveyor according to claim 6, characterized in that: The relaxation device includes a manual hoist and a sling. The manual hoist is fixed directly above the tensioning device of the belt conveyor, and the sling can be tied to the tensioning device. The hook of the manual hoist is connected to the sling to lift the tensioning device upward and release the tension of the conveyor belt.

8. The auxiliary device for a special device for maintenance and transfer of rollers of a circular stockpile suspension belt conveyor according to claim 6 or claim 7, characterized in that: The slack device also includes a fixing device, which includes two sets of clamping devices that clamp and fix the upper conveyor belt (16) and the lower conveyor belt (17) respectively. The clamping device for clamping the lower conveyor belt (17) is installed on the truss (11) on the side of the manual hoist away from the head unloading roller (13), and the clamping device for clamping the upper conveyor belt (16) is installed on the truss (11) near the platform of the head unloading roller (13).

9. The auxiliary device of the special device for maintenance and transfer of rollers of a circular stockpile suspension belt conveyor according to claim 6, characterized in that: The lifting device (5) includes an electric hoist (51) and a sling arranged in the head maintenance platform (12). The sling can be tied to the head unloading roller (13). The hook of the electric hoist (51) is connected to the sling to lift the head unloading roller (13) upward and send it to the transfer trolley (2).

10. The auxiliary device of the special device for maintenance and transfer of rollers of a circular stockpile suspension belt conveyor according to claim 9, characterized in that: The head unloading roller (13) platform is provided with a slide rail (52) for moving an electric hoist (51). The electric hoist (51) can slide along the slide rail (52) from directly above the head unloading roller (13) to directly above the position of the transfer trolley (2) when it reaches the head maintenance platform (12).

Images