Belt conveyor lower roller online replacement device

Abstract

The application belongs to the technical field of belt conveyors, and particularly relates to a belt conveyor lower carrier roller online replacement device, which comprises two supports fixed at the bottom end of a belt conveyor; a rotating piece rotatably installed on the supports, each rotating piece being provided with two assembly grooves for installing lower carrier rollers; a connecting rod for fixing the two rotating pieces; a handle arranged at the end of the connecting rod; and a clamping groove frame for limiting the handle; two lower carrier rollers are installed on the rotating piece, the rotating piece is rotated by the handle, the old carrier roller is separated from the belt, the new carrier roller is moved upward to contact the belt, the replacement operation of the lower carrier roller is quickly completed under the premise that the belt conveyor does not stop, and the operation can be performed by one person, and the working efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of belt conveyors, in particular to a device for online replacement of lower rollers of a belt conveyor. BACKGROUND

[0002] The lower rollers in a belt conveyor are mainly used for supporting the conveying belt. The lower rollers are in long-term frictional contact with the conveying belt, and are prone to damage of the roller bearing or wear of the roller shell. The performance of the lower rollers directly affects the efficiency of the belt conveyor. Therefore, the lower rollers often need to be replaced during the operation of the belt conveyor.

[0003] The existing replacement operation of the lower rollers of the belt conveyor needs to be interrupted. A steel pipe is vertically placed and tied with the frame, and a hand-operated hoist is hung on the top of the steel pipe. A steel pipe is passed from below the return belt, one end of which is tied with the frame of the belt conveyor by iron wire, and the other end is hung on the hook of the hoist. After the steel pipe is lifted together with the belt to the height position of the detachable roller by the hand-operated hoist, the replacement operation of the roller can be performed. This replacement method not only has high labor intensity, long time, and high maintenance cost, but also needs to be interrupted, which affects the belt running rate and production.

[0004] Therefore, the present application provides a device for online replacement of lower rollers of a belt conveyor. SUMMARY

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0006] The technical scheme adopted by the present application to solve its technical problems is: the device for online replacement of lower rollers of a belt conveyor comprises two supports fixed at the bottom end of the belt conveyor, and the two supports are respectively located on the front and rear sides of the belt. The device further comprises:

[0007] A rotating member is rotatably installed on the support. Two assembly grooves for installing the lower rollers are provided on a single rotating member. The lower roller located in the assembly groove at the top end is in contact with the belt.

[0008] A connecting rod is fixed between the two rotating members.

[0009] A mounting bracket is fixed to the outside of the belt conveyor.

[0010] A clamping groove bracket is rotatably installed on the mounting bracket. The clamping groove is formed between the two ends of the clamping groove bracket and the inner wall of the mounting bracket.

[0011] A handle is provided at the end of the connecting rod. The top end of the handle penetrates above one of the clamping grooves.

[0012] An insurance pin is used to fix the clamping groove bracket on the mounting bracket.

[0013] Specifically, in the initial state, the clamping groove frame is fixed in the mounting frame through the safety pin; the handle is inserted into one of the clamping grooves, the handle is fixed, and then the rotating member is fixed in position, two lower rollers are installed in the rotating member, the upper lower roller, i.e. the old lower roller, is in contact with the belt in the belt conveyor and is in a working state, and the lower lower roller is a spare part, i.e. the new lower roller; when the old lower roller needs to be replaced, the safety pin is pulled out, so that the clamping groove frame can rotate; then the clamping groove frame is rotated to release the fixed state of the handle; then the rotating member is rotated by pushing the handle, and the two rotating members rotate synchronously; after the rotating member rotates, the old lower roller moves downward and separates from the belt, and the new lower roller moves upward to contact the belt; then the clamping groove frame is rotated back, and the safety pin is inserted to fix the handle through the clamping groove frame, and then the rotating member and the lower roller are fixed in position, which ensures the stability of the lower roller in the working state and the cooperation with the belt; the old lower roller is removed from the rotating member, and a new spare lower roller is installed; when the lower roller needs to be replaced next time, the handle only needs to be pushed in the opposite direction, which is simple and fast; the device realizes quick replacement of the lower roller without stopping the belt conveyor, and can be operated by one person, which is high in working efficiency.

[0014] Preferably, the rotating member is in the shape of a fan, and the two assembly grooves on the same side are located on the same circular arc surface concentric with the rotating member, and the top end of the rotating member is lower than the top end of the lower roller.

[0015] Specifically, the rotating member does not contact the belt during rotation, and the two lower rollers are located on the same circle; after the rotating member rotates, the new lower roller can move upward to the position of the original lower roller, ensuring that the rotated lower roller can normally contact the belt.

[0016] Preferably, the device further comprises a balancing mechanism, which comprises:

[0017] a support located below each of the rotating members;

[0018] a push plate movably installed in the support, which pushes the rotating member to rotate when the push plate extends upward above the support;

[0019] a pushing member for pushing the push plate to extend upward above the support; and

[0020] a limiting component for positioning the push plate in the support.

[0021] Specifically, the pushing member is preferably but not limited to a spring, and when the lower carrier rollers are replaced, the strength of the workers needs to meet the requirement of pushing the two lower carrier rollers to rotate, and the working strength is relatively large; by arranging the pushing plates below the two rotating members, the pushing member is in a state of compressed energy storage in the initial state, and the pushing plate is fixed, and when the lower carrier rollers are replaced, the fixing of the pushing plate is released, the pushing plate moves upward, thereby pushing the rotating member to rotate, and the operation burden of the workers is reduced.

[0022] Preferably, the limiting assembly comprises:

[0023] Two clamping blocks fixed to the pushing plate; and

[0024] A positioning plate movably inserted into the support, and the bottom end of the positioning plate is provided with a one-way rotating baffle.

[0025] Specifically, the positioning plate one-way blocks the clamping block, and pushes the pushing plate downward, so that the pushing member is compressed, and the pushing plate is fixed in position under the blocking action of the positioning plate; when the lower carrier rollers are replaced, the positioning plate is removed, and the pushing member can push the pushing plate to extend upward.

[0026] Preferably, the clamping block is fixed to the inner side wall of the pushing plate, the positioning plate is located above the pushing plate, the side section of the positioning plate is in the shape of , the top end of the positioning plate extends above the support, and the balancing mechanism further comprises two push plates respectively arranged at the two ends of the connecting rod, and the push plates are used to drive the positioning plate to move upward.

[0027] Specifically, only one side of the connecting rod is provided with a handle, and when the handle is pushed, the two ends of the overall structure composed of the two rotating members and the connecting rod are unevenly stressed, and after long-term use, the connecting rod and the rotating member are prone to bending and deforming, which aggravates the structural loss; if the handles are arranged on both sides of the connecting rod, two workers need to cooperate to push the handles at the same time, which not only increases the labor cost, but also the forces and pushing timing of the two workers may be out of sync, and the two rotating members are also unevenly stressed; in order to improve this problem, the pushing plates are arranged below the two rotating members, the handle, the connecting rod and the rotating member rotate at the same time, the two push plates simultaneously push the two positioning plates upward, then the two pushing plates simultaneously extend upward and push the two rotating members to rotate synchronously, the pushing force of the pushing plate on the rotating member is only related to the pushing member, the pushing force is more stable, by arranging the pushing member, when the rotating member is pushed to rotate, the pushing member plays a main pushing role, and the operator plays an auxiliary role, and a smaller force can be used to push the rotating member to rotate, and the stress size and stress time of the two rotating members are consistent, which not only reduces the operation burden of the workers, but also improves the stress balance of the two rotating members.

[0028] Preferably, the push plate is in the shape of an arc concentric with the rotating member, and both ends of the push plate are provided with slopes for pushing the positioning plate upward.

[0029] Specifically, during the replacement of the lower carrier roller, the push plate swings back and forth, and the symmetrical push plate is provided to ensure the consistency of the cooperation between the push plate and the positioning plate during the swinging back and forth.

[0030] Preferably, the balancing mechanism further comprises:

[0031] two bases fixed on the ground, the support is rotatably installed on the bases, and a gear is fixed to the top end of the support and engaged with the push plate for transmission;

[0032] The overall center of gravity of the rotating member is offset to the lower side of the outside.

[0033] Specifically, the side of the push plate close to the gear is provided with a gear segment capable of engaging with the gear, and when the lower carrier roller is replaced, the push plate extends upward, the rotating member and the connecting rod are deflected, and the push plate on the connecting rod is rotated 180° by the gear segment and the gear during the rotation, so that the push plate continues to be aligned with the lower end surface in the rotating member; after the compression pushing member is compressed, the upwardly extending push plate can continue to push the rotating member to rotate back next time the lower carrier roller is replaced.

[0034] The position of the gear segment is designed to make the rotating action of the support complete before the rotating member is deflected to the other side, and when the lower carrier roller is replaced, the push plate first lifts the positioning plate upward, the pushing member drives the push plate to extend upward quickly, and the push plate pushes the rotating member; then, the gear segment and the gear drive the support and the push plate to rotate 180° quickly; then, the rotating member is deflected to the other side, and due to the fact that the center of gravity of the rotating member is offset downward, the rotating member has a downward movement tendency after being deflected to the vertical axis, the deflected rotating member and the lower carrier roller press the push plate that has been rotated in advance, so that the pushing member is compressed, the function of automatically compressing the pushing member is realized, the power mechanism for compressing the driving member or the trouble of manual operation is saved, the structure is simple and compact, and the use is convenient.

[0035] Preferably, the rotating member comprises:

[0036] a main rotating plate rotatably installed on the support, and the connecting rod is fixed to the main rotating plate;

[0037] two auxiliary rotating plates movably installed on both sides of the main rotating plate, the assembly groove is arranged on the auxiliary rotating plate, the auxiliary rotating plate is provided with a limiting step, and the end of the push plate is aligned with the auxiliary rotating plate below;

[0038] a support member for pushing the sub-rotation plate towards the main rotation plate; and

[0039] a pin for fixing the support member on the main rotation plate.

[0040] Specifically, the support member is preferably but not limited to a spring, the upper assembly slot is located above the shaft center of the main rotation plate, and the lower assembly slot is located above the horizontal shaft center line of the main rotation plate in order to avoid the lower new carrier roller from sliding out of the assembly slot, which also causes the lower carrier roller in the lower assembly slot to be closer to the belt, and the body or mechanical equipment of the worker is closer to the belt when disassembling the lower carrier roller in the lower assembly slot, and the belt is always moving during the replacement process, so that the safety hazard increases when disassembling the lower carrier roller in the lower assembly slot. In order to improve this problem, the rotating member is set to an active structure, the pin on the upper sub-rotation plate is removed before replacing the lower carrier roller, and then the rotating member is pushed to rotate, the upper old carrier roller and the sub-rotation plate are deflected downward, and then the sub-rotation plate continues to deflect downward under the action of inertial force and gravity until the assembly slot opening in the sub-rotation plate faces downward, and then the old carrier roller can automatically slide downward, which saves the trouble of lifting the old carrier roller out of the assembly slot and reduces the workload of disassembling the old carrier roller.

[0041] Preferably, the two sub-rotation plates are symmetrically distributed about the main rotation plate, the push plate is in an arc shape concentric with the main rotation plate, and both ends of the push plate are located below the lower sub-rotation plate.

[0042] Specifically, through this setting, the support and the push plate can rotate below the rotating member during the replacement of the lower carrier roller, and the push plate can stably push and cooperate with the rotating member that swings back and forth.

[0043] Preferably, the equalizing mechanism further comprises two slide rail assemblies respectively fixed at the front and rear sides of the bottom end of the belt conveyor, the slide rail assembly comprises two slide rails respectively located at the left and right sides of the rotating member, the slide rails are in an inclined shape as a whole, both ends of the slide rails are in an open shape, one end of the slide rail close to the rotating member is aligned with the lower assembly slot, and the other end of the slide rail away from the rotating member is provided with a protection plate.

[0044] Specifically, after the old carrier roller is taken out, the new standby carrier roller is sent into the high position in the slide rail along the opening of the protection plate side, the protection plate can avoid the limbs of the staff from contacting the belt, and plays a protection role; then, the standby carrier roller slides down along the slide rail into the assembly groove below, the carrier roller sliding down extrudes the secondary rotating plate below to move downward, the secondary rotating plate moves downward again to extrude the push plate, so that the pusher is compressed twice, and the resilience of the pusher is increased, further improving the pushing force of the pusher on the rotating member; the push plate is extruded twice and is blocked by two clamping blocks.

[0045] The beneficial effects of the present application are as follows:

[0046] 1. The lower carrier roller online replacement device of the belt conveyor, by installing two lower carrier rollers on the rotating member, rotating the rotating member through the handle, the old carrier roller can be separated from the belt, and the new carrier roller moves upward to contact the belt, realizing the quick replacement of the lower carrier roller under the premise that the belt conveyor does not stop, and single person operation, high work efficiency.

[0047] 2. The lower carrier roller online replacement device of the belt conveyor, by setting the push plate below the two rotating members, in the process of rotating the connecting rod and the rotating member, the two push plates simultaneously push the two rotating members to rotate synchronously, the pusher plays a main pushing role, the operator plays an auxiliary role, and a smaller force can be used to rotate the rotating member, and the stress size and stress time of the two rotating members are consistent, not only reducing the operation burden of the staff, but also improving the stress balance of the two rotating members, and improving the problem that the overall structure composed of the two rotating members and the connecting rod is easily deformed and worn due to uneven stress at both ends.

[0048] 3. The lower carrier roller online replacement device of the belt conveyor, the connecting rod is automatically rotated by the gear during the deflection process, the rotating member after deflection compresses the pusher on the push plate once, when installing the new standby lower carrier roller, the sliding down carrier roller compresses the pusher twice, the resilience of the pusher is increased after being compressed twice, further improving the pushing force of the pusher on the rotating member, and the pusher does not need to be compressed additionally, reducing the workload.

[0049] 4. The belt conveyor lower roller online replacement device, by setting the rotating member as the main rotating plate and the auxiliary rotating plate, when replacing the lower roller, the auxiliary rotating plate on the upper side is removed, then the rotating member is pushed to rotate, under the action of the inertial force and the gravity, the auxiliary rotating plate continues to deflect downward to the assembly groove opening downward, then the old roller can automatically slide downward, the trouble of lifting the old roller from the assembly groove and then taking out is saved, and the workload is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0050] The application will be further described below in combination with the drawings.

[0051] Figure 1 is a perspective view of the embodiment one of the application;

[0052] Figure 2 is a perspective view of the rotating member and the lower roller of the embodiment one of the application;

[0053] Figure 3 is a perspective view of the embodiment two of the application;

[0054] Figure 4 is an exploded view of the embodiment two of the application;

[0055] Figure 5 is a half cutaway view of the balancing mechanism of the embodiment two of the application;

[0056] Figure 6 is a perspective view of the rotating member and the connecting rod of the embodiment two of the application;

[0057] Figure 7 is an exploded view of the rotating member of the embodiment two of the application;

[0058] Figure 8 is a state change schematic view of the rotating member and the push plate of the application. DETAILED DESCRIPTION

[0059] In order to make the technical means, creative features, purposes and effects realized by the application easy to understand, the application will be further described below in combination with the specific embodiments.

[0060] Embodiment one

[0061] As shown in the drawings, the belt conveyor lower roller online replacement device of the embodiment of the application comprises two supports 1 fixed at the bottom end of the belt conveyor, and the two supports 1 are respectively located at the front and rear sides of the belt; and further comprises: Figures 1-2 The rotating member 2 is rotatably installed on the support 1, and two assembly grooves 201 for installing the lower roller are arranged on a single rotating member 2, and the lower roller in the assembly groove 201 at the top end is in contact with the belt;

[0062] ​

[0063] Link 3, the two rotating parts 2 are fixedly connected by link 3;

[0064] Mounting bracket 4, which is fixed to the outside of the belt conveyor;

[0065] Rotate the slot bracket 5 mounted on the mounting frame 4, and form a slot between the two ends of the slot bracket 5 and the inner wall of the mounting frame 4;

[0066] A handle 6 is provided at the end of the connecting rod 3, the top end of the handle 6 extending above one of the slots; and

[0067] Safety pins 7 are used to secure the card slot bracket 5 to the mounting bracket 4.

[0068] Specifically, Figure 1 In the middle, the upper structural components are the outer frame of the belt conveyor and the belt. In the initial state, the slot frame 5 is fixed in the mounting frame 4 by the safety pin 7; the handle 6 is inserted into one of the slots, and the handle 6 is fixed, thereby keeping the rotating part 2 in a fixed position. Two lower idlers are installed in the rotating part 2. The upper lower idler, i.e., the old idler, is in contact with the belt in the belt conveyor and is in working condition. The lower lower idler is a spare part, i.e., a new idler. When the upper old idler has a problem and needs to be replaced, the safety pin 7 is pulled out, allowing the slot frame 5 to rotate; then the slot frame 5 is rotated to release the fixing state of the handle 6; then, the rotating part 2 is pushed to rotate by the handle 6, and the two rotating parts 2 rotate synchronously. Figure 2 For example, pushing handle 6 from right to left causes rotating part 2 to rotate counterclockwise. After rotating part 2 rotates, the old idler roller above moves downward and separates from the belt, while the new idler roller below moves upward until it contacts the belt. Then, the slot bracket 5 is rotated and the safety pin 7 is inserted, fixing handle 6 through the slot bracket 5. This keeps rotating part 2 and the lower idler roller in a fixed position, ensuring stable engagement of the lower idler roller with the belt during operation. The old idler roller is removed from rotating part 2, and a new spare lower idler roller is installed. When replacing the lower idler roller next time, simply push handle 6 in the opposite direction. The operation is simple and quick. This device enables the rapid replacement of the lower idler roller without stopping the belt conveyor, and it can be operated by a single person, resulting in high work efficiency.

[0069] like Figure 2 As shown, the rotating component 2 is fan-shaped, and the two mounting slots 201 on the same side are located on the same arc surface concentric with the rotating component 2. The top of the rotating component 2 is lower than the top of the lower roller.

[0070] Specifically, the rotating component 2 never contacts the belt during rotation, and the two lower rollers are located on the same circle. After the rotating component 2 rotates, the new roller can move upward to the original position of the lower roller, ensuring that the lower roller after rotating upward can make normal contact with the belt.

[0071] Embodiment Two

[0072] As Figures 3-5 shown, Comparative Embodiment One, wherein another embodiment of the present application is:

[0073] Further comprising an equalizing mechanism 8, the equalizing mechanism 8 comprising:

[0074] a support 81 located below each of the two rotating members 2;

[0075] a pushing plate 82 movably mounted in the support 81, the pushing plate 82 extending upwards beyond the support 81 to push the rotating member 2 to rotate;

[0076] a pushing member 83 for pushing the pushing plate 82 to extend upwards beyond the support 81; and

[0077] a limiting assembly 84 for limiting the pushing plate 82 in the support 81.

[0078] Specifically, the pushing member 83 is preferably but not limited to a spring, and when replacing the lower rollers, the strength of the workers needs to be able to push the two lower rollers to rotate, and the working strength is relatively large; by providing the pushing plate 82 below the two rotating members 2, in the initial state, the pushing member 83 is in a compressed energy storage state, and the pushing plate 82 is fixed, when replacing the lower rollers, the fixing of the pushing plate 82 is released, and the pushing plate 82 moves upwards, thereby pushing the rotating member 2 to rotate, and the operation burden of the workers is reduced.

[0079] As Figures 4-6 shown, the limiting assembly 84 comprises:

[0080] two clamping blocks 841 fixed to the pushing plate 82; and

[0081] a positioning plate 842 movably inserted in the support 81, the positioning plate 842 being provided at a bottom end thereof with a one-way rotating baffle.

[0082] Specifically, the positioning plate 842 one-way blocks the clamping block 841, and pushes the pushing plate 82 downwards, so that after the pushing member 83 is compressed, the pushing plate 82 is kept in position fixed under the blocking action of the positioning plate 842; when replacing the lower rollers, the positioning plate 842 is removed, and the pushing member 83 can push the pushing plate 82 to extend upwards.

[0083] As Figure 6 shown, the clamping block 841 is fixed to an inner side wall of the pushing plate 82, the positioning plate 842 is located above the pushing plate 82, and a side cross section of the positioning plate 842 is The top end of the positioning plate 842 extends above the support 81, and the balancing mechanism 8 further comprises two push plates 843 arranged at the two ends of the connecting rod 3 respectively, and the push plates 843 are used to drive the upward movement of the positioning plate 842.

[0084] Specifically, since only one side of the connecting rod 3 is provided with the handle 6, when the handle 6 is pushed, the two rotating members 2 and the connecting rod 3 are not balanced at both ends, and after long-term use, the connecting rod 3 and the rotating member 2 are prone to bending and deforming, which aggravates the structural loss. If the handle 6 is arranged on both sides of the connecting rod 3, two workers need to push the handle 6 at the same time, which not only increases the labor cost, but also the force and the timing of the two workers may be out of sync, and the two rotating members 2 are also not balanced. In order to improve this problem, the top pushing plate 82 is arranged below the two rotating members 2, and when the handle 6, the connecting rod 3 and the rotating member 2 rotate, the two push plates 843 simultaneously push the two positioning plates 842 upward, and then the two top pushing plates 82 simultaneously extend upward and push the two rotating members 2 to rotate synchronously. The pushing force of the top pushing plate 82 on the rotating member 2 is only related to the pushing member 83, and the pushing force is more stable. By selecting a pushing member 83 with strong pushing effect, such as a spring with large elastic coefficient, the pushing member 83 plays a major role in pushing the rotating member 2, and the operator plays an auxiliary role. A smaller force can be used to push the rotating member 2 to rotate, and the size and time of the force of the two rotating members 2 are consistent, which not only reduces the operation burden of the workers, but also improves the balance of the force of the two rotating members 2.

[0085] As shown in Figure 6 , the push plate 843 is in an arc shape concentric with the rotating member 2, and the two ends of the push plate 843 are provided with slopes for pushing the positioning plate 842 upward, and the push plate 843 is symmetric about the center line of the rotating member 2.

[0086] Specifically, during the replacement of the lower roller, the push plate 843 swings back and forth, and the symmetrically structured push plate 843 is arranged to ensure the consistency of the cooperation between the push plate 843 and the positioning plate 842 during the swinging back and forth.

[0087] As shown in Figures 5-8 , the balancing mechanism 8 further comprises:

[0088] two bases 85 respectively supporting the support 81, and the connection between the support 81 and the base 85 is a rotating connection; and

[0089] a gear 86 fixed to the top end of the support 81, and the gear 86 is in meshing transmission with the push plate 843;

[0090] The center of gravity of the rotating component 2 is located slightly to the outside and below.

[0091] Specifically, the base 85 is fixedly installed on the ground. The side of the lever plate 843 near the gear 86 is provided with a toothed section that can mesh with the gear 86. When the lower idler roller is replaced, the push plate 82 extends upward, pushing the rotating part 2 and the connecting rod 3 to deflect. During the rotation, the lever plate 843 on the connecting rod 3 drives the support 81 to rotate 180° through the cooperation of the toothed section and the gear 86, so that the push plate 82 continues to be aligned with the lower end face of the other side of the rotating part 2. After compressing the pusher 83, the upwardly extended push plate 82 can continue to push the rotating part 2 to rotate when the lower idler roller is replaced next time.

[0092] By designing the position of the toothed section, the rotation of the support 81 is completed before the rotating part 2 deflects to the other side. When changing the lower roller, the lever 843 first lifts the positioning plate 842 upward, and the pusher 83 drives the push plate 82 to extend upward quickly. The push plate 82 pushes the rotating part 2. Then, the toothed section and the gear 86 work together to drive the support 81 and the push plate 82 to rotate 180° quickly. Next, the rotating part 2 rotates horizontally 180° and deflects to the other side. Since the center of gravity of the rotating part 2 is lower, the rotating part 2 has a tendency to move downward after deflecting past the vertical axis. The deflected rotating part 2 and the lower roller squeeze the push plate 82, which has already rotated, so that the pusher 83 is compressed. This realizes the function of automatically compressing the pusher 83, eliminating the trouble of setting up an additional power mechanism for compressing the drive component or manual operation. The structure is simple and compact and easy to use.

[0093] like Figures 4-7 As shown, the rotating component 2 includes:

[0094] Main rotating plate 21, which is rotatably mounted on the bracket 1, and the connecting rod 3 is fixedly connected to the main rotating plate 21;

[0095] Two auxiliary rotating plates 22 are respectively movably installed on both sides of the main rotating plate 21. The assembly groove 201 is provided on the auxiliary rotating plate 22. The auxiliary rotating plate 22 is provided with a limiting step. The end of the push plate 82 is aligned with the auxiliary rotating plate 22 below.

[0096] The support member 23 that pushes the secondary rotating plate 22 closer to the main rotating plate 21; and

[0097] Pins 24 are used to fix the support member 23 onto the main rotating plate 21.

[0098] Specifically, the support 23 is preferably but not limited to a spring, the lower supporting roller in the lower assembly slot 201 is close to the belt, when the lower supporting roller in the lower assembly slot 201 is disassembled, the limbs or mechanical equipment of the worker are close to the belt, and the belt is always moving because the belt conveyor does not stop during the replacement process. Therefore, when the lower supporting roller in the lower assembly slot 201 is disassembled, the safety hazard increases. In order to improve this problem, the rotating part 2 is arranged in a movable structure, the clamping pin 24 on the upper auxiliary rotating plate 22 is removed before the lower supporting roller is replaced, and then the rotating part 2 is pushed to rotate. The old supporting roller and the auxiliary rotating plate 22 are deflected downward, and then the auxiliary rotating plate 22 continues to deflect downward under the action of inertial force and gravity until the assembly slot 201 in the auxiliary rotating plate 22 opens downward. Then, the old supporting roller can automatically slide downward, which saves the trouble of lifting the old supporting roller from the assembly slot 201 and then taking it out, and reduces the workload when the old supporting roller is disassembled.

[0099] As shown in Figures 6-7 , the two auxiliary rotating plates 22 are symmetrically distributed about the main rotating plate 21, the push plate 82 is in an arc shape concentric with the main rotating plate 21, the inner part of the support 81 is provided with an arc-shaped sliding groove corresponding to the push plate 82, and the two ends of the push plate 82 are located below the lower auxiliary rotating plate 22.

[0100] Specifically, through the arrangement, the support 81 and the push plate 82 can rotate below the rotating part 2 during replacement of the lower supporting roller, and the push plate 82 can stably push and cooperate with the rotating part 2 that swings back and forth.

[0101] As shown in Figures 3-4 , the balancing mechanism 8 further comprises two slide rail assemblies 87 respectively fixed at the front and rear sides of the bottom end of the belt conveyor, the slide rail assembly 87 comprises two slide rails respectively located at the left and right sides of the rotating part 2, the slide rails are in an inclined shape as a whole, the two ends of the slide rails are in an open shape, one end of the slide rail close to the rotating part 2 is aligned with the lower assembly slot 201, and the other end of the slide rail away from the rotating part 2 is provided with a protection plate.

[0102] Specifically, after the old carrier roller is taken out, the new standby carrier roller is sent into the high position in the slide rail along the opening on the side of the protection plate, the protection plate can avoid the limbs of the staff from contacting the belt, and plays a protection role; then, the standby carrier roller slides down along the slide rail into the assembly groove 201 below, the sliding down carrier roller extrudes the secondary rotating plate 22 below to move downward under the action of inertia, the secondary rotating plate 22 moves downward and then extrudes the push plate 82 again, so that the pusher 83 is compressed twice, and the pusher 83 is compressed twice, the rebound force of the pusher 83 is increased, and the pushing force of the pusher 83 on the rotating part 2 is further improved; the push plate 82 is extruded twice and is blocked by the two clamping blocks 841 respectively.

[0103] Working principle: initially, the pusher 83 is in a compressed state; when replacing the lower carrier roller, the safety pin 7 is taken out of the clamping groove frame 5, the clamping groove frame 5 is turned over, the fixing of the handle 6 is released, the clamping pin 24 on the upper secondary rotating plate 22 is taken out, then the handle 6 is pushed to rotate the rotating part 2 and the connecting rod 3, while the connecting rod 3 and the rotating part 2 rotate, the two push plates 843 simultaneously push the two positioning plates 842 upward, then the two push plates 82 are simultaneously pushed upward by the pusher 83 and push the two rotating parts 2 to rotate synchronously, after the rotating part 2 rotates, the upper secondary rotating plate 22 and the old carrier roller move downward and are separated from the belt, and the lower new carrier roller moves upward to contact the belt;

[0104] When the rotating part 2 is deflected to the other side, the cooperation of the tooth segment on the push plate 843 and the gear 86 drives the support 81 and the push plate 82 to rotate 180° quickly, and the push plate 82 that has been stretched upward is deflected to the other side in advance;

[0105] After the upper old carrier roller and the secondary rotating plate 22 are deflected downward, under the action of inertial force and gravity, the secondary rotating plate 22 will continue to deflect downward until the assembly groove 201 in the secondary rotating plate 22 opens downward, so that the old carrier roller automatically slides down from the assembly groove 201, automatically completing the work of disassembling the old carrier roller, saving the trouble of lifting the old carrier roller from the assembly groove 201 and then taking it out, and reducing the workload when disassembling the old carrier roller; at the same time, the downward deflected secondary rotating plate 22 and old carrier roller extrude the push plate 82, so that the pusher 83 is compressed for the first time, and the push plate 82 that has moved into the support 81 is blocked by the first clamping block 841 after the first time;

[0106] After the old carrier roller falls from the assembly groove 201, the secondary rotating plate 22 below moves upward to reset under the pushing of the supporting part 23 and is aligned with the bottom outlet of the slide rail;

[0107] The new spare roller is sent into the high position of the slide rail along the opening of the protection plate side, and then the spare roller slides down along the slide rail into the assembly groove 201 below, the down-sliding roller extrudes the secondary rotating plate 22 below to move downward under the action of inertia, the secondary rotating plate 22 moves downward and then extrudes the push plate 82 again, so that the pusher 83 is compressed again and moves into the inside of the support 81, and the push plate 82 after moving into the inside of the support 81 is blocked by the second clamping block 841; at this time, the operation of installing the new spare roller is completed, and the pusher 83 is also in the compressed state;

[0108] The above steps are repeated, and the on-line replacement operation of the lower roller can be recycled, and the pusher 83 does not need to be compressed additionally, so that the workload is reduced.

[0109] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for online replacement of an under roller of a belt conveyor, comprising two supports (1) fixed at the bottom end of the belt conveyor, the two supports (1) being respectively located on the front and rear sides of the belt, characterized in that: Also include: Rotary piece (2) is rotatably installed on the support (1), a single said rotary piece (2) is provided with two assembly slots (201) for installing the lower carrier roller, the lower carrier roller in the top said assembly slot (201) is in contact with the belt; Connecting rod (3), two said rotary pieces (2) are fixed between the connecting rod (3); Mounting bracket (4) is fixed outside the belt conveyor; Rotary mounting bracket (4) on the card slot frame (5), the two ends of the card slot frame (5) and the inner wall of the mounting bracket (4) form a card slot; Handle (6) provided at the end of the connecting rod (3), the top of the handle (6) penetrates above one of the card slots; And Safety pin (7) for fixing the card slot frame (5) on the mounting bracket (4); The overall shape of the rotary piece (2) is a fan shape, two said assembly slots (201) on the same side are located on the same circular arc surface concentric with the rotary piece (2), and the top of the rotary piece (2) is lower than the top of the lower carrier roller; Also includes equalizing mechanism (8), the equalizing mechanism (8) comprises: Support (81) located below two said rotary pieces (2) respectively; Top pushing plate (82) movably installed in the support (81), the top pushing plate (82) extends upwards to push the rotary piece (2) to rotate; Pushing member (83) for pushing the top pushing plate (82) to extend upwards to the support (81); And Limiting assembly (84) for positioning the top pushing plate (82) in the support (81); The limiting assembly (84) comprises: Two clamping blocks (841) fixed on the top pushing plate (82); And Positioning plate (842) movably inserted into the support (81), the bottom end of the positioning plate (842) is provided with a one-way rotating baffle; The clamping block (841) is fixed on the inner side wall of the top pushing plate (82), the positioning plate (842) is located above the top pushing plate (82), the side section of the positioning plate (842) is trapezoidal, the top of the positioning plate (842) extends above the support (81), the equalizing mechanism (8) further comprises two respectively provided on the two ends of the connecting rod (3) The dial plate (843) is used to drive the positioning plate (842) to move upwards; The dial plate (843) is arc-shaped concentric with the rotary piece (2), the two ends of the dial plate (843) are provided with inclined slopes for pushing the positioning plate (842) to move upwards, and the dial plate (843) is symmetric about the center line of the rotary piece (2); The equalizing mechanism (8) further comprises: Two bases (85) respectively supporting the support (81), the connection relationship between the support (81) and the base (85) is rotary connection; And Gear (86) fixed on the top of the support (81), the gear (86) is engaged with the dial plate (843) for transmission; The overall center of gravity of the rotary piece (2) is biased to the outside below.

2. The device for online replacement of the lower idler roller of the belt conveyor according to claim 1, characterized in that: The rotary piece (2) comprises: A main rotating plate (21) is rotatably installed on the support (1), and the connecting rod (3) is fixed to the main rotating plate (21); Two auxiliary rotating plates (22) are movably installed on both sides of the main rotating plate (21), the assembly groove (201) is arranged on the auxiliary rotating plate (22), the auxiliary rotating plate (22) is provided with a limiting step, the end of the pushing plate (82) is aligned with the auxiliary rotating plate (22) below, and the support (23) is arranged on the auxiliary rotating plate (22) and used for pushing the auxiliary rotating plate (22) to be close to the main rotating plate (21); and A clamping pin (24) is arranged on the main rotating plate (21) and used for fixing the support (23) on the main rotating plate (21). The two auxiliary rotating plates (22) are symmetrically distributed about the main rotating plate (21), the pushing plate (82) is in an arc shape concentric with the main rotating plate (21), the inner part of the support (81) is provided with an arc-shaped sliding groove corresponding to the pushing plate (82), and the two ends of the pushing plate (82) are located below the auxiliary rotating plate (22) below.

3. The device for online replacement of the lower idler roller of the belt conveyor according to claim 2, characterized in that: The equalizing mechanism (8) further comprises two slide rail assemblies (87) fixed to the front and rear sides of the belt conveyor bottom end respectively, the slide rail assembly (87) comprises two slide rails located on the left and right sides of the rotating part (2), the slide rails are in an inclined shape as a whole, the two ends of the slide rails are in an open shape, one end of the slide rail close to the rotating part (2) is aligned with the assembly groove (201) below, and the other end of the slide rail away from the rotating part (2) is provided with a protection plate.

4. The device for online replacement of the lower idler roller of a belt conveyor according to claim 3, characterized in that: ​

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