Rubber-coated roller mechanism for mine belt conveyor

Abstract

The present application relates to a kind of mine belt conveyor rubber-coated roller mechanism, including shaft support part.There are left and right opposite inclined arms on the roller support, and multiple pairs of rim arms matching with side roller are arranged on the inclined arms, so that the rim arms match with the base arranged on the inclined arms.Both ends of the side roller are formed with shaft end part.The shaft support part corresponds to the side roller and matches, including assembly seat, and the assembly seat matches with the base through track structure, so that it can move in front-back direction.The lower part of the rim arm is pivotally matched with the assembly seat and is fixed on the assembly seat.A cylinder part is fixedly arranged in the shaft hole of the rim arm.The shaft end part is pivotally matched with the cylinder part and can have a floating stroke in axial direction relative to the cylinder part.The cooperation structure between the side roller and the support is improved in the present application, so that the inclination angle of the side roller in front-back direction can be adjusted, the conveying belt / belt can be guided when deviation occurs, and the belt conveyor can be applied to bidirectional operation.

Description

Technical Field

[0001] This invention relates to the field of rubber-coated idler rollers for belt conveyors, and more specifically to a rubber-coated idler roller mechanism for mining belt conveyors. Background Technology

[0002] Rubber-coated idler mechanisms are an important component of mining belt conveyors. Their function is to support the conveyor belt and the weight of the material, reducing friction during relative movement between the belt and the idlers. After the rubber-coated idlers are mounted and fixed on the support frame, the two ends of the roller shaft are matched with the support frame via a pivot structure, allowing the idlers to rotate around their axis, thus reducing friction between the rollers and the conveyor belt. Currently, idler supports on mining belt conveyors are mostly configured as a combination of center rollers and side rollers, with a side roller on each side of the center roller. (See [reference needed]). Figure 1 As shown in the diagram. Both the center roller and the side rollers are generally rubber-coated idlers. For ease of description, the center roller and side rollers will be collectively referred to as idlers below. Existing idler brackets are mostly integral fixed structures, with all idlers pivotally mounted on the bracket. Once assembled, the tilt angle of the side rollers relative to the horizontal plane (or the conveyor belt surface) in the left-right direction, and the relative positional relationship between the side rollers and the center roller, are all in a relatively fixed state.

[0003] During operation, mining belt conveyors (i.e., belt conveyors) are inevitably affected by multiple factors such as manufacturing, installation, and loading, causing the conveyor belt's rotation center to deviate from the conveyor's centerline, a phenomenon known as belt misalignment. Excessive misalignment can easily lead to material spillage along the conveyor belt's sides, and in severe cases, force a shutdown or even cause major accidents such as belt tearing, resulting in significant economic losses. To suppress misalignment, the most effective and commonly used method is to use self-aligning idlers. These idlers are installed on both sides of the conveyor belt. When the belt deviates to one side, the axis of the self-aligning idler on the deviating side is tilted forward at a certain angle, generating a lateral pushing force on the misaligned conveyor belt and gradually correcting it. The main drawbacks are: it can only be used on unidirectional belt conveyors; the forward tilt angle of the self-aligning idlers is limited, resulting in a relatively small lateral pushing force; and under heavy loads, the efficiency of correcting misalignment is low, and insufficient correction may even occur. Summary of the Invention

[0004] This invention provides a rubber-coated idler mechanism for a mining belt conveyor. By improving the cooperation structure between the side roller and the support, the tilt angle of the side roller in the front-to-back direction can be adjusted, so as to correct the conveyor belt when it runs off-track. This mechanism is suitable for bidirectional belt conveyors.

[0005] The technical solution adopted by the present invention to achieve its technical objective is: a rubber-coated idler mechanism for a mining belt conveyor, comprising a middle roller and side rollers pivotally mounted on an idler support, with the side rollers being relatively distributed on the left and right sides of the middle roller, and a shaft support.

[0006] At the upper part of the idler roller bracket, a pair of upright arms facing each other are located in the center, and a pair of inclined arms facing each other on both sides are located on both sides, with the lower extension lines of the two inclined arms intersecting, and the two upright arms positioned opposite each other between the two inclined arms. Multiple pairs of flanges facing each other are provided on the inclined arms, with one flange near the lower end of the inclined arm and the other flange near the upper end of the inclined arm in each pair. Corresponding to the flanges on both sides, a base facing each other is fixed to the upper end face of the inclined arm, and a track structure extending in the front-to-back direction is provided on each base.

[0007] The two ends of the center roller are pivotally matched with the two vertical arms. The two ends of the side rollers are each formed with shaft ends, which are matched with the two paired edge arms.

[0008] The shaft support is matched one-to-one with the side roller, including the inner shaft support and the outer shaft support that are matched with the two ends of the side roller respectively.

[0009] Both the inner and outer shaft supports include mounting bases, and the two mounting bases are matched with the left and right opposite bases on the inclined arm through a track structure, so that the mounting bases can move relative to the inclined arm in the front and back direction.

[0010] A column is formed at the lower part of the flange arm, which pivotally matches the upper part of the mounting base and can fix the flange arm to the mounting base. A cylindrical part is fixedly provided in the shaft hole of the flange arm.

[0011] A shoulder body is fixedly provided on the shaft end of the side roller, and a spring part 1 and an end cap 2 are sleeved on the inner side of the shoulder body from the outside to the inside, and a bearing part, a ring part, a spring part 2 and an end cap 1 are sleeved on the outer side of the shoulder body from the inside to the outside.

[0012] The free end of the shaft extends into the cavity of the cylindrical part, establishing a pivotal matching relationship between the shaft end and the cylindrical part, and fixing end cap one and end cap two to the two ends of the cylindrical part respectively, while confining the shaft shoulder, spring part one, bearing part, ring part, spring part two, etc. within the cavity of the cylindrical part.

[0013] The free end / outer end of the shaft extends into the central hole of end cap one. The two ends of spring part one contact the end faces of the shaft shoulder and end cap two, respectively, and the two ends of spring part two contact the end faces of end cap one and ring part, respectively. The ring part and bearing part can slide back and forth along the axis of the cylinder between the opposing surfaces of the two end caps.

[0014] Optionally, the mounting base includes a top seat and a base that are fixedly connected. The top seat has a shaft hole that matches the column located at the lower part of the flange, and the lower part of the base extends downward relative to the top seat.

[0015] The top seat and the base are matched by a track structure, and the part of the base that extends out of the top seat is matched with the drive unit, so that the base can carry the top seat and move relative to the base in the front and back direction.

[0016] Optionally, it also includes two pairs of sliding plates that correspond to and match the two inclined arms, and multiple linkage parts that are alternately arranged on each sliding plate along the length of the sliding plate.

[0017] Two pairs of skateboards are matched with bases located on the inclined arm and facing each other via a track structure, allowing the skateboards to move relative to the inclined arm in the forward and backward direction.

[0018] The linkage part on the slide plate is matched with the mounting base in a one-to-one correspondence. A downwardly extending protruding arm is formed on the lower part of the mounting base, and the protruding arm is directly above the linkage part.

[0019] A shaped hole corresponding to and matching the linkage part is formed on the slide plate, so that the shaped hole is formed as a stepped through hole and at least the upper cavity of the stepped through hole is formed as a light column cavity.

[0020] The linkage includes a transmission block, a spring, and an electromagnet assembly.

[0021] A column rod located at the lower part of the transmission block matches the smooth column cavity at the upper part of the die and extends into the die. A spring is fitted onto the section of the column rod that extends into the die. A base plate is fixedly mounted at the lower end of the column rod, and the base plate matches the lower end section of the die.

[0022] The two ends of the spring are in contact with the inner bottom surface of the upper end of the shaped hole and the upper end surface of the chassis, respectively. A permanent magnet block is fixedly installed on the lower end surface of the chassis.

[0023] The electromagnet assembly is fixed at the lower end of the die and, when energized, applies an upward thrust to the chassis, causing the transmission block to move vertically up and down relative to the slide plate or the upper end of the die. When the electromagnet assembly is de-energized, the thrust on the chassis disappears, and the transmission block is pushed downward to reset by the elastic force of the spring.

[0024] A groove is formed at the upper end of the transmission block to correspond with the convex arm. When the transmission block moves up and down relative to the slide plate, the convex arm can selectively insert upward into the groove and move downward out of the groove.

[0025] Optionally, a straight groove is formed on the upper end face of the transmission block, such that the straight groove extends along the length direction of the slide plate and has open ports at both ends. The lower end of the convex arm extends into the straight groove, and the lower end of the convex arm can move relative to the straight groove along the length direction of the slide plate.

[0026] The beneficial effects of this invention are as follows: By improving the cooperation structure between the side roller and the support, the tilt angle of the side roller in the front-to-back direction can be adjusted significantly, enabling rapid correction of the conveyor belt when it deviates from its designated path. This invention is also applicable to bidirectional belt conveyors. Furthermore, when the conveyor is under heavy load, a larger pushing force can be applied to the conveyor belt to promote its alignment, thus improving the alignment effect. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention.

[0028] Figure 2 This is a cross-sectional structural diagram of the flange arm and the mounting base.

[0029] Figure 3 This is a top view of the structure of the flange, mounting base, and base.

[0030] Figure 4 This is a cross-sectional structural diagram of the base.

[0031] Figure 5 This is a top view of the base structure.

[0032] Figure 6 This is a schematic diagram of the structure where the shaft end matches the cylinder.

[0033] Figure 7 This is a schematic diagram of the structure for matching the skateboard with the linkage.

[0034] In the diagram: 10 Idler roller bracket, 11 Vertical arm, 12 Inclined arm, 121 Base, 1211 Groove rail, 1212 Cavity, 122 Screw drive unit, 13 Support arm; 20 Middle roller; 30 Side roller, 31 Shaft end, 311 Shaft shoulder, 312 Spring part one, 313 Ring part, 314 Spring part two, 32 Cylinder part, 321 End cap one, 322 End cap two; 40 Shaft support, 41 Inner shaft support, 42 Outer shaft support, 43 Edge arm, 431 Shaft hole, 432 column; 44 mounting base, 441 top seat, 442 base, 4421 insert arm, 4422 connecting plate, 4423 block, 443 convex arm; 45 sliding plate, 451 convex body, 452 shaped hole, 453 convex rail; 46 linkage part, 461 transmission block, 4611 column rod, 4612 chassis, 4613 permanent magnet block, 4614 linear groove; 462 spring, 463 electromagnet assembly, 1 elastic washer one, 2 elastic washer two. Detailed Implementation

[0035] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "front," "rear," and "middle" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0036] like Figures 1 to 6 The illustrated rubber-coated idler mechanism for a mining belt conveyor includes a middle roller 20 and a side roller 30 pivotally mounted on an idler support 10, as well as a shaft support 40.

[0037] The side rollers 30 are arranged opposite each other on the left and right sides of the middle roller 20. Generally, the number of side rollers 30 is twice the number of middle rollers 20, but the relationship between the two is not absolutely limited.

[0038] The shaft support 40 corresponds to and matches the side roller 30 one by one, including an inner shaft support 41 and an outer shaft support 42 that correspond to the two ends of the side roller 30 respectively.

[0039] At the upper part of the roller bracket 10, a pair of upright arms 11 are provided in the center, and a pair of inclined arms 12 are provided on both sides, with the lower extension lines of the two inclined arms 12 intersecting. The two upright arms 11 are positioned between the two inclined arms 12, that is, the inclined arms 12 are provided on the outer side of the upright arms 11, and the two inclined arms 12 are positioned in the left and right opposite each other.

[0040] The inclined arm 12 is provided with multiple pairs of inner and outer / left and right opposite flanges 43 (the two are not directly connected), and in each pair of flanges 43, one flange 43 is close to the downward inclined end of the inclined arm 12, and the other flange 43 is close to the upward inclined end of the inclined arm 12.

[0041] Corresponding to the two side flanges 43, a left-right opposing base 121 is fixedly provided on the upper end face of the inclined arm 12, and a track structure (i.e., the groove 1211 shown in the figure) extending in the front-back direction is provided on the base 121. A cavity 1212 is formed on the base 121 at a position corresponding to the position between the two grooves 121.

[0042] The two ends of the middle roller 20 are pivotally matched with the two vertical arms 11 respectively. The two ends of the side roller 30 are respectively formed with shaft ends 31, and the shaft ends 31 are correspondingly matched with the two edge arms 43.

[0043] Both the inner shaft support 41 and the outer shaft support 42 include mounting bases 44, and the mounting bases of the two shaft supports are respectively matched with the left and right opposite bases 121 provided on the inclined arm 12 via groove rails 1211, so that the mounting bases 44 can move relative to the inclined arm 12 in the front-back direction. The idler roller bracket 10 is provided with a support arm 13 for supporting the upturned end / free end of the inclined arm 12.

[0044] like Figures 2 to 6 As shown, a column 432 is formed at the lower part of the flange 43, such that the column 432 pivotally matches the upper part of the mounting base 44 and can fix the flange 43 on the mounting base 44. A cylindrical portion 32 is fixedly provided in the shaft hole 431 of the flange 43.

[0045] A shoulder body 311 is fixedly provided on the shaft end 31 of the side roller 30.

[0046] On the shaft end 31, on the inner side of the shoulder body 311 ( Figure 6 (As shown on the right side) and a spring portion 312 and an end cap 322 are fitted from the outside to the inside, on the outer side of the shoulder body 311 ( Figure 6 (As shown on the left side) and is fitted from the inside out with a bearing part, a ring part 313, a spring part 314 and an end cap 321.

[0047] The free end side of the shaft end 31 ( Figure 6 The left end of the shaft (shown) extends into the cavity of the cylindrical portion 32, so that the shaft end 31 can establish a pivotal matching relationship with the cylindrical portion 32, and the end cap 1 321 and end cap 2 322 are respectively fixed at both ends of the cylindrical portion 32, while the shaft shoulder 311, the spring part 1 312, the bearing part, the ring part 313, the spring part 2 314, etc. are confined in the cavity of the cylindrical portion 32.

[0048] The free end / outer end of the shaft end 31 extends into the axial hole of the end cap 321.

[0049] The two ends of the first spring portion 312 are in contact with the end faces of the shoulder body 311 and the second end cover 322, respectively, and the two ends of the second spring portion 314 are in contact with the end faces of the first end cover 321 and the ring portion 313, respectively.

[0050] The ring portion 313 and the bearing portion are capable of reciprocating sliding relative to the cylindrical portion 32 along the axis between the opposing surfaces of the two end caps. The end face of the ring portion 313 facing the bearing portion can apply an axial thrust to the bearing portion, ensuring that the bearing portion can still function stably after reciprocating along the axial direction.

[0051] By establishing a pivotal matching relationship between the two ends of the side roller 30 and the flange 43 via the cylindrical portion 32, and by arranging the shaft ends 31 formed at both ends of the side roller 30 with the shaft shoulder 311, the first spring portion 312, the bearing portion, the ring portion 313, and the second spring portion 314, etc., and confining the spring portions etc. within the cylindrical cavity of the cylindrical portion 32 by the first end cap 321 and the second end cap 322, the two ends of the side roller 30 can be given a floating stroke, thus creating clearance during the forward or backward tilting action of the side roller 30. The magnitude of the floating stroke of the two ends of the side roller 30 relative to the cylindrical portion 32 can affect / limit the maximum angle of the side roller 30 tilting forward and backward.

[0052] like Figures 2 to 5 As shown, the mounting base 44 includes a top seat 441 and a base 442 fixedly connected. The top seat 441 has a stepped through-hole (a type of shaft hole) that corresponds to and matches the column 432 located at the lower part of the flange 43. The lower part of the base 442 extends downward relative to the top seat 441. The free end of the column 432 has an external thread section that passes downward through the shaft hole in the top seat 441 and matches a nut, thus fixing the flange 43 to the top seat 441 and allowing the flange 43 to rotate relative to the top seat 441 or, in other words, relative to the mounting base 44 (around the axis of the column 432). After assembly, the axis of the column 432 is perpendicular to the inclined arm 12.

[0053] The top seat 441 and the base 121 are matched by the groove 1211. The portion of the base 442 extending out of the top seat 441 extends into the cavity 1212 (extending in the front-back direction) and is matched with the drive unit (the lead screw transmission unit 122 shown in the figure), so that the base 442 can carry the top seat 441 and move relative to the base 121 (or relative to the inclined arm 12) in the front-back direction.

[0054] Specifically, a pair of opposing insert arms 4421 are formed on the upper part of the base 442. A connecting plate 4422 is formed at the lower end of the insert arms 4421, and a block 4423 that connects the two opposing connecting plates 4422 is formed at the lower end of the two connecting plates 4422. A lead screw through hole matching the lead screw drive unit 122 is formed on the block 4423. The downward extension length of the connecting plate 4422 should provide sufficient clearance for the portion of the column 432 that extends downward out of the shaft hole (i.e., the external thread section on the column 432).

[0055] The front and rear faces of the top seat 441 are respectively formed with grooves that correspond to and match the two insert arms 4421 on the base 442. After the insert arms 4421 are inserted upward into the grooves, the top seat 441 and the base 442 are fixedly connected as a whole by bolts.

[0056] like Figure 7 As shown, it also includes two pairs of sliding plates 45 that correspond to and match the two inclined arms 12 respectively, and a plurality of linkage parts 46 that are alternately arranged on each sliding plate 45 along the length direction of the sliding plate 45.

[0057] Two pairs of sliding plates 45 are respectively matched with the bases 121 located on the inclined arm 12 and facing each other from left to right, via a track structure (the grooved rail 1211 shown in the figure), so that the sliding plates 45 can move relative to the inclined arm 12 in the front-back direction. The sliding plates 45 are provided with convex rails 453 that correspond to and match the grooved rail 1211.

[0058] The linkage portion 46 on the slide plate 45 corresponds to and matches the mounting base 44. A downwardly extending protruding arm 443 is formed on the lower part of the mounting base 44, and the protruding arm 443 is positioned directly above the linkage portion 46.

[0059] A shaped hole 452 corresponding to and matching the linkage part 46 is formed on the slide plate 45, such that the shaped hole 452 is formed as a stepped through hole, and at least the upper end cavity of the stepped through hole is formed as a light column cavity. On the slide plate 45, a protrusion 451 is formed at the position corresponding to the shaped hole 452, and the upper part of the shaped hole 452 is formed on the protrusion 451, with the upper port of the shaped hole 452 extending to the upper end face of the protrusion 451.

[0060] The linkage 46 includes a transmission block 461, a spring 462, and an electromagnet assembly 463.

[0061] The lower part of the transmission block 461 has a column rod 4611 that matches the upper part of the shaped hole 452, and the lower part of the column rod 4611 extends into the shaped hole 452. The spring 462 is fitted onto the section of the column rod 4611 that extends into the shaped hole 452. A base plate 4612 is fixedly provided at the lower end of the column rod 4611, and the base plate 4612 matches the lower end section of the shaped hole 452.

[0062] The two ends of the spring 462 are in contact with the upper inner bottom surface of the shaped hole 452 and the upper end surface of the chassis 4612, respectively. A permanent magnet block 4613 is fixedly provided on the lower end surface of the chassis 4612.

[0063] The electromagnet assembly 463 is fixed at the lower port of the hole 452 and can apply an upward thrust to the chassis 4612 when energized, so that the transmission block 461 can move up and down in the vertical direction relative to the slide plate 45 or relative to the upper end of the hole 452.

[0064] When the electromagnet assembly 463 is de-energized, the thrust acting on the chassis 4612 disappears, and simultaneously, under the elastic force of the spring 462, it pushes the transmission block 461 downward to reset. A groove is formed at the upper end of the transmission block 461 that corresponds to and matches the protruding arm 443. When the transmission block 461 moves up and down relative to the slide plate 45, the protruding arm 443 can selectively insert upward into the groove and move downward out of the groove.

[0065] A straight groove 4614 is formed on the upper end surface of the transmission block 461, such that the straight groove 4614 extends along the length direction of the slide plate 45 and both ends of the straight groove 4614 are open ports.

[0066] The lower end of the convex arm 443 can extend into the straight groove 4614, and the lower end of the convex arm 443 can move relative to the straight groove 4614 along the length direction of the slide plate 45.

[0067] Setting the straight groove 4614 and matching it with the convex arm 443 helps ensure the reliability of the fit between the convex arm 443 and the transmission block 461, and helps the lower end of the convex arm 443 to smoothly insert into the groove set on the transmission block 461 directly below it.

[0068] By controlling the movement of each linkage 46 provided on the slide plate 45, it is possible to selectively establish a plug-in connection between some linkages 46 (one or more) and the mounting base 44 (or protruding arm 443) directly above it, such as... Figure 7The right-side linkage 46, as shown, allows the mounting seats 44 (or the flanges 43) to move forward and backward relative to the base 121 when the slide plate 45 moves in the front-back direction, causing the side rollers 30 that pivot with the corresponding flanges 43 to tilt forward or backward. Figures 2 to 5 The drive structure / transmission mechanism scheme shown is as follows: Figure 7 The solution shown can reduce the number of transmission units / transmission assemblies (such as lead screw transmission unit 122), which helps to save costs.

[0069] To reduce or prevent impacts between opposing surfaces when the chassis 4612 moves up and down relative to the bore 452, an elastic washer 1 can be fixedly provided at the edge of the upper end surface of the chassis 4612. An elastic washer 2 can be fixedly provided on the inner bottom surface of the upper end of the bore 452.

[0070] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Many aspects of the present invention can be improved without departing from the overall concept. Those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A rubber-coated idler mechanism for a mine belt conveyor, comprising a center roller and side rollers pivotally arranged on an idler support, and the side rollers are oppositely arranged on the left and right sides of the center roller; a pair of vertical arms are oppositely arranged on the upper part of the idler support at the center position, and the two ends of the center roller are pivotally matched with the two vertical arms respectively; characterized in that: It also includes the shaft support section; On the upper part of the roller support, inclined arms are provided on the outer side of the vertical arm, and the lower extension lines of the two inclined arms can intersect; multiple pairs of flange arms are provided on the inclined arms with inner and outer opposite sides, and the flange arms on both sides are fixed with left and right opposite bases on the upper end face of the inclined arms, and a track structure extending in the front and rear direction is provided on the base; the two ends of the side roller are respectively formed with shaft ends, and the shaft ends are matched with the two pairs of flange arms. The shaft support is matched one-to-one with the side roller, including an inner shaft support and an outer shaft support that are matched with the two ends of the side roller respectively; both the inner shaft support and the outer shaft support include a mounting base, and the two mounting bases are matched with the left and right opposite bases on the inclined arm through a track structure, so that the mounting bases can move relative to the inclined arm in the front and back direction. A column is formed at the lower part of the flange arm, which pivotally matches the upper part of the mounting base and can fix the flange arm on the mounting base; a cylindrical part is fixedly provided in the shaft hole of the flange arm; A shoulder body is fixedly provided on the end of the shaft, and a spring part 1 and an end cap 2 are fitted inside the shoulder body from the outside to the inside. A bearing part, a ring part, a spring part 2 and an end cap 1 are fitted outside the shoulder body from the inside to the outside. The free end of the shaft end extends into the cavity of the cylindrical part and establishes a pivot matching relationship with the cylindrical part. The end cap 1 and the end cap 2 are fixed at both ends of the cylindrical part respectively. The free end of the shaft end extends into the axial hole of the end cap 1. The two ends of the spring part 1 are in contact with the end faces of the shoulder body and the end cap 2 respectively, and the two ends of the spring part 2 are in contact with the end faces of the end cap 1 and the ring part respectively.

2. A rubber covered idler mechanism for a mining belt conveyor as claimed in claim 1, characterised in that: The mounting base includes a top seat and a base that are fixedly connected. The top seat has a shaft hole that matches the column. The lower part of the base extends downward relative to the top seat. The top seat and the base are matched by a track structure. The part of the base that extends out of the top seat is matched with the drive unit.

3. The rubber-coated idler mechanism for a mining belt conveyor according to claim 1, characterized in that: It also includes two pairs of slides that correspond to and match the two inclined arms, and multiple linkage parts that are alternately arranged on each slide along the length of the slides; Two pairs of skateboards are matched with bases located on the inclined arm and facing each other through a track structure, allowing the skateboards to move relative to the inclined arm in the front-back direction. The linkage part on the slide plate is matched with the mounting base in a one-to-one correspondence; a downwardly extending protruding arm is formed on the lower part of the mounting base, and the protruding arm is positioned directly above the linkage part; a shaped hole is formed on the slide plate that matches the linkage part. The linkage includes a transmission block, a spring, and an electromagnet assembly; A column rod is installed at the lower part of the transmission block, extending into the die hole from the upper end of the die hole. After a spring is fitted on it, a base plate is fixedly connected to the lower end of the column rod, and the base plate matches the lower end section of the die hole. The two ends of the spring contact the inner bottom surface of the upper end of the die hole and the upper end surface of the base plate, respectively. A permanent magnet block is fixedly installed on the lower end surface of the base plate. The electromagnet assembly is fixed at the lower end of the shaped hole and can apply an upward thrust to the chassis when energized, causing the transmission block to move vertically upward relative to the slide plate. A groove is formed at the upper end of the transmission block to match the convex arm; when the transmission block moves up and down relative to the slide plate, the convex arm can selectively insert upward into the groove and move downward out of the groove.

4. The rubber-coated idler mechanism for a mining belt conveyor according to claim 3, characterized in that: A straight groove is formed on the upper end face of the transmission block, so that the straight groove extends along the length direction of the slide plate and both ends are open ports; The lower end of the convex arm extends into the straight groove, allowing the lower end of the convex arm to move relative to the straight groove along the length of the slide plate.

5. The rubber-coated idler mechanism for a mining belt conveyor according to claim 3, characterized in that: An elastic washer is fixedly provided on the upper end face of the chassis so that the elastic washer can contact the inner bottom surface of the upper end of the shaped hole.

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