Rotary belt deviation rectifying device

Abstract

A rotary belt deviation rectifying device relates to the technical field of belt conveying equipment and comprises a rack, a rotary mechanism, a carrier roller mechanism and a deviation detecting mechanism. The slewing mechanism is installed on the rack and located in the center of the rack, the slewing mechanism comprises a driving end and a connecting end, and the driving end is in driving connection with the slewing motor; the carrier roller mechanism is installed at the connecting end and used for bearing the conveying belt, and the rotary mechanism drives the carrier roller mechanism to rotate along the center line of the rack under driving of the rotary motor. The deviation detection mechanism comprises two deviation detection switches installed on the carrier roller mechanism, the two deviation detection switches are symmetrically arranged on the two sides of the carrier roller mechanism along the center line of the rack, the deviation detection switches are located on the outer side of the conveying belt and matched with the conveying belt, and the rotary motor is controlled by the deviation detection switches. The deviation rectifying device can improve the deviation rectifying capacity, reduce the occupied space, increase the deviation rectifying rotation angle and reduce the maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveying equipment, in particular to a rotary belt deviation rectifying device. Background Art

[0002] Belt deviation is a common phenomenon in the operation of belt conveyors. Deviation of the upper belt easily causes material scattering, reduces the service life of idlers, and may lead to belt tearing when the belt deviates severely. Deviation of the lower belt easily causes the belt to rub against the frame and damages the belt.

[0003] There are two ways to rectify deviation with traditional deviation rectifying devices. One is mechanical deviation rectification. The friction force generated by the linear velocity difference formed by the deviation of the conveyor belt on the conical rubber-coated deviation rectifying idler causes the idler to deflect. However, the power source formed by this friction force is passive and the deviation rectifying force is unstable. The other is hydraulic deviation rectification. Relying on the conveyor belt and the inspection drive wheel, the rotation of the inspection drive wheel driven by friction drives the oil pump to work and drives the hydraulic cylinder to push the self-aligning idler to deflect. This passive method also relies on friction force. Due to problems such as oil leakage in hydraulic components, it will inevitably cause the deviation rectifying device to malfunction. Moreover, the manual operation and maintenance costs of mechanical deviation rectification and hydraulic deviation rectification are relatively high.

[0004] Most of the existing electric deviation rectifying devices adopt the structure of "a driving arm extends from the central rotating seat of the deviation rectifying idler frame, and the electric push rod pushes and pulls the driving arm to realize the rotation of the deviation rectifying frame". This type of deviation rectifying device has high requirements for the length of the driving arm and the stroke of the electric push rod, occupies a large installation space, and the rotation angle of the deviation rectifying frame is limited. Summary of the Utility Model

[0005] In view of this, the technical problem to be solved by the utility model is to provide a rotary belt deviation rectifying device, which can improve the deviation rectifying ability, reduce the occupied space, increase the deviation rectifying rotation angle, and reduce the maintenance cost.

[0006] To solve the above technical problem, the technical solution of the utility model is:

[0007] A rotary belt deviation rectifying device includes a frame, a rotary mechanism, an idler mechanism, and a deviation detection mechanism;

[0008] The rotary mechanism is installed on the frame and located at its central position. The rotary mechanism includes a driving end and a connecting end, and the driving end is drivingly connected to a rotary motor;

[0009] The idler mechanism is installed on the connecting end for carrying the conveyor belt. Driven by the rotary motor, the rotary mechanism drives the idler mechanism to rotate along the center line of the frame;

[0010] The deviation detection mechanism includes two deviation detection switches installed on the idler mechanism. The two deviation detection switches are symmetrically arranged on both sides of the idler mechanism along the center line of the frame. The deviation detection switches are located outside the conveyor belt and are adapted to it. The rotary motor is controlled by the deviation detection switches.

[0011] Preferably, the rotary mechanism includes a worm and worm gear slewing bearing. The worm input end of the worm and worm gear slewing bearing is drivingly connected to the rotary motor, and the worm gear output end of the worm and worm gear slewing bearing is fixedly connected to the idler mechanism.

[0012] Preferably, the idler mechanism includes an idler bracket. An idler group is rotatably installed on the idler bracket, and the idler bracket is installed on the connection end.

[0013] Preferably, the idler group includes a left idler, a middle idler, and a right idler;

[0014] Two middle brackets are arranged on the idler bracket. One middle bracket is arranged between the left idler and the middle idler, and the other middle bracket is arranged between the middle idler and the right idler;

[0015] Both the left idler and the right idler are conical rubber-coated deviation-correcting idlers.

[0016] Preferably, the deviation detection switch is installed on the idler bracket through a deviation detection bracket;

[0017] The deviation detection bracket includes a first connecting rod connected to the idler bracket. The end of the first connecting rod is fixedly connected with an obliquely arranged sleeve. A second connecting rod is adjustably sleeved in the sleeve, and the deviation detection switch is installed on the second connecting rod.

[0018] Preferably, the top end of the sleeve is inclined outward along the width direction of the conveyor belt.

[0019] Preferably, a rotary limit mechanism is arranged between the idler bracket and the frame. The rotary limit mechanism is used to detect the maximum deviation adjustment angle of the idler bracket and control the rotary motor to stop driving accordingly.

[0020] Preferably, the rotary limit mechanism includes a limit post vertically fixed at the bottom of the idler bracket, and a clockwise limit switch, a counterclockwise limit switch, and an origin limit switch fixed on the frame. The clockwise limit switch, the counterclockwise limit switch, and the origin limit switch are all adapted to the limit post.

[0021] Preferably, an arc-shaped mounting plate is fixedly installed on the frame, the axis of the arc-shaped mounting plate is collinear with the center line of the frame, and the clockwise limit switch, the counterclockwise limit switch, and the origin limit switch are installed on the arc-shaped mounting plate.

[0022] Preferably, two arc-shaped mounting grooves are formed in the arc-shaped mounting plate along its circumferential direction, the two arc-shaped mounting grooves are symmetrically arranged along the origin limit switch, and the clockwise limit switch and the counterclockwise limit switch are respectively installed in one of the arc-shaped mounting grooves.

[0023] After adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0024] In the present utility model, it includes a frame, a slewing mechanism, a roller mechanism, and a deviation detection mechanism; among them, the slewing mechanism is installed on the frame and located at its central position, the slewing mechanism includes a driving end and a connecting end, and the driving end is drivingly connected to a slewing motor; the roller mechanism is installed on the connecting end for carrying a conveyor belt, and under the drive of the slewing motor, the slewing mechanism drives the roller mechanism to rotate along the center line of the frame; the deviation detection mechanism includes two deviation detection switches installed on the roller mechanism, the two deviation detection switches are symmetrically arranged along the center line of the frame, and the slewing motor is controlled by the deviation detection switches. When the conveyor belt deviates, the conveyor belt touches one of the deviation detection switches, the deviation detection switch controls the slewing motor to start, drives the slewing mechanism to rotate, drives the roller mechanism to rotate along the center line of the frame, so that the roller mechanism deflects by a certain angle, realizes forced deviation correction of the conveyor belt, realizes the effect of quickly and efficiently correcting the deviation of the conveyor belt by driving the roller mechanism through the slewing motor, and improves the conveying capacity of the conveyor belt. During this process, the power for deviation correction comes from the slewing motor, rather than the passive driving method of friction on the conical rubber-coated deviation correction roller or the inspection drive wheel in the original structure, which improves the deviation correction ability, ensures the stability of deviation correction, and reduces the manual operation and maintenance cost; moreover, it also changes the deviation correction method of using an electric push rod to push and pull a driving arm to realize the rotation of the deviation correction frame in the existing electric deviation correction, reduces the occupied space of the deviation correction device, the deviation correction angle is not affected by the electric push rod and the driving arm, increases the deviation correction rotation angle, and improves the use effect. Description of the Drawings

[0025] The following further describes the present utility model with reference to the drawings and embodiments.

[0026] Figure 1 is a schematic structural diagram of a rotary belt deviation correction device according to an embodiment of the present utility model;

[0027] Figure 2 is Figure 1 the front view of

[0028] Figure 3 is Figure 2 the A-A cross-sectional view of

[0029] Figure 4 is Figure 1 the top view of

[0030] Figure 5 is Figure 4 the structural schematic diagram of the rotary belt deviation rectifying device in

[0031] In the figure:

[0032] 1. Frame;

[0033] 2. Rotary mechanism; 21. Driving end; 22. Connecting end; 23. Rotary motor;

[0034] 3. Roller mechanism; 31. Roller support; 32. Roller group; 321. Left roller; 322. Middle roller; 323. Right roller; 33. Middle support;

[0035] 4. Deviation detection mechanism; 41. Deviation detection switch; 42. Deviation detection support; 421. First connecting rod; 422. Sleeve; 423. Second connecting rod;

[0036] 5. Rotary limit mechanism; 51. Limit column; 52. Clockwise limit switch; 53. Counterclockwise limit switch; 54. Origin limit switch; 55. Arc mounting plate; 551. Arc mounting groove;

[0037] 6. Conveyor belt. Specific embodiments

[0038] In order to make the purpose, technical solutions and advantages of the present 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 only used to explain the present utility model and are not used to limit the present utility model.

[0039] As Figures 1 to 5 collectively shown, the present utility model includes a frame 1, a rotary mechanism 2, a roller mechanism 3 and a deviation detection mechanism 4; among them, the rotary mechanism 2 is installed on the frame 1 and is located at its central position, the rotary mechanism 2 includes a driving end 21 and a connecting end 22, and the driving end 21 is drivingly connected to the rotary motor 23; the roller mechanism 3 is installed on the connecting end 22 for carrying the conveyor belt 6, and under the drive of the rotary motor 23, the rotary mechanism 2 drives the roller mechanism 3 to rotate along the center line of the frame 1; the deviation detection mechanism 4 includes two deviation detection switches 41 installed on the roller mechanism 3, and the two deviation detection switches 41 are symmetrically arranged on both sides of the roller mechanism 3 along the center line of the frame 1, the deviation detection switch 41 is located outside the conveyor belt 6 and is adapted to it, and the rotary motor 23 is controlled by the deviation detection switch 41. Preferably, the deviation detection switch 41 is arranged upstream of the roller mechanism 3 along the running direction of the conveyor belt 6.

[0040] When the conveyor belt 6 runs off track, the conveyor belt 6 touches one of the off-track detection switches 41. The off-track detection switch 41 controls the start of the rotary motor 23, drives the rotary mechanism 2 to rotate, drives the idler mechanism 3 to rotate along the center line of the frame 1, deflects the idler mechanism 3 by a certain angle, and realizes forced rectification of the conveyor belt 6. It realizes the rapid and efficient rectification effect of the conveyor belt 6 by driving the idler mechanism 3 with the rotary motor 23, and improves the conveying capacity of the conveyor belt 6. During this process, the power for rectification comes from the rotary motor 23. Preferably, the rotary motor 23 is a servo motor, which is light in weight, rather than the passive driving method of friction on the conical rubber-coated rectifying idler or the inspection drive wheel in the original structure, improving the rectification ability, ensuring the stability of rectification, and reducing the manual operation and maintenance cost; moreover, it also changes the rectification method of using an electric push rod to push and pull the driving arm to realize the rotation of the rectifying frame in the existing electric rectification, reduces the occupied space of the rectifying device, the rectification angle is not affected by the electric push rod and the driving arm, increases the rectification rotation angle, and improves the use effect.

[0041] For example, as Figure 5 shown, when the conveyor belt 6 runs upward and touches the off-track detection switch 41 on the left, the rotary motor 23 drives the idler mechanism 3 to rotate clockwise along the center line of the frame 1.

[0042] In the present application, the rotary mechanism 2 includes a worm and worm gear slewing bearing. The worm input end of the worm and worm gear slewing bearing is drivingly connected to the rotary motor 23, and the worm gear output end of the worm and worm gear slewing bearing is fixedly connected to the idler mechanism 3.

[0043] Preferably, the idler mechanism 3 includes an idler bracket 31. An idler group 32 is rotatably installed on the idler bracket 31, and the idler bracket 31 is installed on the connection end 22. When the rotary mechanism 2 is a worm and worm gear slewing bearing, the worm gear output end of the worm and worm gear slewing bearing is connected to the idler bracket 31 to drive the idler bracket 31 to rotate.

[0044] The idler group 32 includes a left idler 321, a middle idler 322 and a right idler 323; wherein, two middle brackets 33 are arranged on the idler bracket 31. One middle bracket 33 is arranged between the left idler 321 and the middle idler 322, and the other middle bracket 33 is arranged between the middle idler 322 and the right idler 323; both the left idler 321 and the right idler 323 are conical rubber-coated rectifying idlers, and auxiliary rectification is carried out by using the principle of different linear speeds of the conical rubber-coated rectifying idlers, improving the rectification efficiency.

[0045] In the present application, the deviation detection switch 41 is mounted on the idler bracket 31 through the deviation detection bracket 42; the deviation detection bracket 42 includes a first connecting rod 421 connected to the idler bracket 31, and an obliquely arranged sleeve 422 is fixedly connected to the end of the first connecting rod 421. A second connecting rod 423 is adjustably sleeved in the sleeve 422, and the deviation detection switch 41 is mounted on the second connecting rod 423. The position of the second connecting rod 423 is adjustable, which can drive the adjustment of the detection position of the deviation detection switch 41 and expand the detection range.

[0046] The top end of the sleeve 422 is inclined outward along the width direction of the conveyor belt 6, so that the second connecting rod 423 can drive the deviation detection switch 41 to adjust its position away from or close to one side of the conveyor belt 6.

[0047] In the present application, a rotation limit mechanism 5 is provided between the idler bracket 31 and the frame 1. The rotation limit mechanism 5 is used to detect the maximum deviation adjustment angle of the idler bracket 31 and control the rotation motor 23 to stop driving accordingly.

[0048] Preferably, the rotation limit mechanism 5 includes a limit post 51 vertically fixed to the bottom of the idler bracket 31, and a clockwise limit switch 52, a counterclockwise limit switch 53 and a home position limit switch 54 fixed to the frame 1. The clockwise limit switch 52, the counterclockwise limit switch 53 and the home position limit switch 54 are all adapted to the limit post 51. In the present application, the limit post 51 rotates together with the idler bracket 31, while the positions of the clockwise limit switch 52, the counterclockwise limit switch 53 and the home position limit switch 54 remain unchanged, respectively indicating the home position of the idler bracket 31 and its maximum deviation adjustment angles when rotating clockwise and counterclockwise. When it rotates clockwise to the maximum angle under the drive of the rotation motor 23, the limit post 51 triggers the clockwise limit switch 52, and the clockwise limit switch 52 controls the rotation motor 23 to stop driving. When it rotates counterclockwise to the maximum angle, the limit post 51 triggers the counterclockwise limit switch 53, and the counterclockwise limit switch 53 controls the rotation motor 23 to stop driving, preventing danger and improving safety. Among them, when the conveyor belt 6 deviates, the conveyor belt 6 touches the deviation detection switches 41 on both sides, and the idler bracket 31 drives the limit post 51 to move to the clockwise limit switch 52 or the counterclockwise limit switch 53, and the rotation motor 23 stops. The idler bracket 31 maintains its state. At this time, the conveyor belt 6 gradually returns to normal. If the deviation detection switch 41 does not receive a signal within a certain period of time, the system defaults that the conveyor belt 6 has returned to normal, the rotation motor 23 rotates, the idler bracket 31 rotates to drive the limit post 51 to the home position limit switch 54, and the rotation motor 23 stops. The idler bracket 31 maintains its state. When the deviation detection switch 41 detects a signal again, the above deviation correction control actions are repeated.

[0049] Preferably, an arc-shaped mounting plate 55 is fixedly arranged on the frame 1. The axis of the arc-shaped mounting plate 55 is collinear with the center line of the frame 1. A clockwise limit switch 52, a counterclockwise limit switch 53, and a home position limit switch 54 are mounted on the arc-shaped mounting plate 55. The limit post 51 is located inside the arc-shaped mounting plate 55, that is, the limit post 51 is located between the axis of the arc-shaped mounting plate 55 and its inner wall.

[0050] Two arc-shaped mounting grooves 551 are formed in the arc-shaped mounting plate 55 along its circumferential direction. The two arc-shaped mounting grooves 551 are symmetrically arranged along the home position limit switch 54. The clockwise limit switch 52 and the counterclockwise limit switch 53 are respectively mounted in one of the arc-shaped mounting grooves 551. The arrangement of the arc-shaped mounting grooves 551 can facilitate the circumferential position adjustment of the clockwise limit switch 52 and the counterclockwise limit switch 53 along the arc-shaped mounting plate, change their detection positions, and further adjust the maximum deviation angle for detecting the idler bracket 31, expanding the deviation detection range.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rotating belt deviation correction device, characterized in that: It includes a frame, a slewing mechanism, a roller mechanism and a deviation detection mechanism; The slewing mechanism is installed on the frame and is located at the center thereof. The slewing mechanism includes a driving end and a connecting end. The driving end is drivingly connected to the slewing motor. The roller mechanism is installed on the connecting end to carry the conveyor belt. Under the drive of the rotary motor, the rotary mechanism drives the roller mechanism to rotate along the center line of the frame. The deviation detection mechanism includes two deviation detection switches installed on the roller mechanism, and the two deviation detection switches are symmetrically arranged on both sides of the roller mechanism along the center line of the frame. The deviation detection switch is located on the outside of the conveyor belt and is adapted to it, and the rotary motor is controlled by the deviation detection switch.

2. The rotating belt deviation correcting device according to claim 1, characterized in that: The rotary mechanism comprises a worm gear slewing support, a worm input end of the worm gear slewing support is drivingly connected to the rotary motor, and a worm output end of the worm gear slewing support is fixedly connected to the roller mechanism.

3. The rotating belt deviation correcting device according to claim 1, characterized in that: The roller mechanism comprises a roller bracket, on which a roller group is rotatably mounted, and the roller bracket is mounted on the connecting end.

4. The rotating belt deviation correcting device according to claim 3, characterized in that: The roller group includes a left roller, a middle roller and a right roller; Two middle brackets are arranged on the roller bracket, one of the middle brackets is arranged between the left roller and the middle roller, and the other middle bracket is arranged between the middle roller and the right roller; The left roller and the right roller are both conical rubber-coated deviation-correcting rollers.

5. The rotating belt deviation correcting device according to claim 3, characterized in that: The deviation detection switch is installed on the roller bracket through the deviation detection bracket; The deviation detection bracket includes a first connecting rod connected to the roller bracket, the end of the first connecting rod is fixedly connected to an obliquely arranged sleeve, a second connecting rod is adjustable in position in the sleeve, and the deviation detection switch is installed on the second connecting rod.

6. The rotating belt deviation correcting device according to claim 5, characterized in that: The top end of the sleeve is inclined outwards along the width direction of the conveyor belt.

7. The rotating belt deviation correcting device according to claim 3, characterized in that: A rotation limiting mechanism is arranged between the roller support and the frame, and the rotation limiting mechanism is used to detect the maximum adjustment angle of the roller support and thereby control the rotation motor to stop driving.

8. The rotating belt deviation correcting device according to claim 7, characterized in that: The slewing limit mechanism includes a limit column vertically fixed to the bottom of the roller bracket, and a clockwise limit switch, a counterclockwise limit switch and an origin limit switch fixed to the frame. The clockwise limit switch, the counterclockwise limit switch and the origin limit switch are all compatible with the limit column.

9. The rotating belt deviation correcting device according to claim 8, characterized in that: An arc-shaped mounting plate is fixedly arranged on the frame, the axis of the arc-shaped mounting plate is colinear with the center line of the frame, and the clockwise limit switch, the counterclockwise limit switch and the origin limit switch are mounted on the arc-shaped mounting plate.

10. The rotating belt deviation correcting device according to claim 9, characterized in that: The arc-shaped mounting plate is provided with two arc-shaped mounting grooves along its circumference, and the two arc-shaped mounting grooves are symmetrically arranged along the origin limit switch, and the clockwise limit switch and the counterclockwise limit switch are respectively installed in one of the arc-shaped mounting grooves.

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