CN221025817U - Conveyer belt overspeed device tensioner - Google Patents

Abstract

The utility model discloses a conveyer belt tensioning device, which comprises two brackets, a large tensioning roller and two small tensioning rollers, wherein the brackets are fixedly connected with a middle frame, the two small tensioning rollers are positioned on the left side and the right side of the brackets and are rotatably connected to the middle frame, a screw rod is vertically fixed on each bracket, a sliding block and a threaded nut are sleeved on each screw rod, the sliding blocks are positioned below the nuts, springs are fixed between the bottoms of the two sliding blocks and the bottoms of the brackets, connecting blocks are respectively arranged on the sliding blocks in a sliding manner, rotating holes are formed in the two connecting blocks, and two ends of a roller shaft of the large tensioning roller are rotatably clamped in the two rotating holes; through fixing the screw rod on the support, the slider is established to the cover that slides on the screw rod, and the spring is established to the slider bottom, and when the conveyer belt extension, the reset action of spring drives slider and tensioning big roller and moves down, accomplishes automatic tensioning, and sliding connection has the connecting block on the slider, then through the sliding connection piece, can dismantle tensioning big roller, easy operation is convenient.

Description

Conveyer belt overspeed device tensioner

Technical Field

The utility model belongs to the technical field of tensioning, and particularly relates to a conveyor belt tensioning device.

Background

The belt conveyor is a machine capable of conveying materials and mainly comprises a head roller, a tail roller and a middle supporting roller, wherein belts are wound on the head roller and the tail roller, when the head roller rotates, a conveying belt is driven to rotate through friction force, so that the tail roller is driven to rotate, and the materials are conveyed to the other end from one end in the process of rotation of the conveying belt. In order to ensure the friction between the conveyor belt and the roller, the conveyor can normally work, and a tensioning device is generally arranged in the conveyor to tension the belt, so that the phenomenon that the conveyor belt is too loose to cause insufficient friction between the conveyor belt and the roller to cause slippage of the conveyor belt is avoided.

In the prior art, through searching, the utility model patent with the Chinese patent publication number of CN205187149U discloses a tensioning device of a belt conveyor, which mainly comprises two brackets a which are symmetrically arranged front and back, wherein the two brackets a are respectively arranged on middle frames b on the front side and the back side, a screw rod c is rotationally arranged on each bracket b, a sliding block d is in threaded connection with each screw rod c, one side of the sliding block d is in sliding connection with the bracket a, a tensioning large roller e is rotationally connected between the two sliding blocks d, a tensioning small roller f is rotationally arranged on each middle frame b on the left side and the right side of the bracket a, and a conveying belt g bypasses the tensioning small roller f, the tensioning large roller e and then penetrates out of the other tensioning small roller f. During debugging, the sliding block moves downwards by rotating the screw rod, so that the tensioning large roller is driven to move downwards, and the conveying belt is tensioned.

However, in the prior art, a conveyer belt tensioning device similar to the technical scheme has the following defects in the practical implementation process: and (3) a step of: the belt can be gradually stretched along with the use of the conveyor, but the tensioning large roller cannot automatically move downwards for tensioning, and only the screw rod is manually rotated periodically to enable the tensioning large roller to move downwards for tensioning, so that the belt is inconvenient, tensioning cannot be completed timely, and a neutral period of slipping of the conveyor belt is easy to occur; and II: the tensioning large roller is directly rotated and arranged on the sliding block, when the tensioning large roller needs to be disassembled, the sliding block needs to be disassembled from the screw together, and then the tensioning large roller is taken out, so that the tensioning large roller is troublesome.

Disclosure of utility model

In view of the defects and drawbacks existing in the prior art, the utility model aims to provide a conveyor belt tensioning device, which solves the problems that the conveyor belt tensioning device in the prior art cannot automatically adjust the tensioning of a conveyor belt in the running process of a conveyor, the slipping neutral period of the conveyor belt is easy to occur, and a tensioning large roller is directly and rotatably arranged on a sliding block, when the tensioning large roller is required to be dismounted, the sliding block is required to be dismounted from a screw together, and then the tensioning large roller is taken out, so that the problem of inconvenience is solved.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a conveyer belt overspeed device tensioner, includes two supports, a tensioning big roller and two tensioning little rollers, two supports fore-and-aft symmetry and two middle frame fixed connection, two tensioning little rollers are located the left and right sides of support to both ends all pivoted are connected in middle frame, all vertically are fixed with a screw rod on every support, the cover is equipped with a slider that can follow its free slip and a nut rather than threaded connection on the screw rod, the slider is located the below of nut, two equal fixedly connected with spring between the bottom of slider and the bottom of support, two slider are provided with a connecting block in the side that faces all slides, and the connecting block passes through the bolt lock with the slider and connects, has seted up the commentaries on classics hole on classics on two connecting blocks, the rotatable joint in two commentaries on classics downthehole in the roller both ends of tensioning big roller.

As a further improvement of the utility model, the bracket comprises a channel steel, a top plate is fixed at the top of the channel steel, a bottom plate is fixed at the bottom of the channel steel, a screw rod is fixed between the top plate and the bottom plate, support plates are fixed at two sides of the channel steel, and the support plates are connected with the middle frame through bolts.

As a further improvement of the utility model, the inner walls of the left side and the right side of the channel steel are respectively fixed with a vertical sliding bar, the left side and the right side of the sliding block are provided with sliding grooves matched with the vertical sliding bars, and the sliding bars are embedded in the sliding grooves of the sliding block in a sliding fit manner.

As a further development of the utility model, both tensioning rollers are rotatably connected to the intermediate frame via a support.

As a further improvement of the utility model, the inner side of the middle wallboard of the channel steel is fixedly provided with a clamping rack, teeth of the clamping rack are arranged in a downward inclined manner, one side of the sliding block, which is close to the clamping rack, is fixedly provided with an elastic plate, the bottom of the elastic plate is fixedly connected with the sliding block, the top of the elastic plate is inclined towards one side, which is far away from the sliding block, and a clamping block matched with the clamping rack is fixedly arranged on the elastic plate.

As a further improvement of the utility model, a clamping hole is formed at the lower side of each tooth of the clamping rack, and a protruding block capable of being clamped into the clamping hole is fixed on the top surface of the clamping block.

Compared with the prior art, the utility model has the following advantages:

1. The screw is fixed on the support, the screw is sleeved with a sliding block and a nut in threaded connection, the nut is arranged above the sliding block, the bottom of the sliding block is connected with the bottom of the support through a spring, the sliding block moves downwards, the sliding block drives the tensioning large roller to move downwards, and then the nut is screwed, so that the nut is propped against the upper side of the sliding block, and the tensioning work of the conveying belt is completed; with the use of the conveyor, when the tension of the conveyor is reduced due to the extension of the conveyor, the sliding block can be pulled to move downwards under the reset action of the spring, so that the tensioning of a certain degree can be automatically carried out, then nuts are screwed at certain intervals, the nuts are propped against the sliding block, the neutral period of slipping of the conveyor is avoided or reduced, the period of manually adjusting the tensioning is greatly prolonged, and the normal operation of the conveyor is ensured;

In addition, all slide and set up the connecting block in two slider opposite sides, the connecting block passes through the bolt lock with the slider and connects, set up the commentaries on classics hole on two connecting blocks, the rotatable joint in two commentaries on classics downthehole of roller both ends of tensioning large roll, then when dismantling tensioning large roll, at first, tear down the bolt of connecting on connecting block and slider, then slide the connecting block to the slider, then expose the roller of tensioning large roll, then can directly dismantle tensioning large roll, when needing to install tensioning large roll, slide the connecting block in the slider earlier, then hold in the palm the height of connecting block with tensioning large roll, then slide the connecting block outward, until the connecting block blocks the roller of tensioning large roll, then with bolt locking slider and connecting block can, need not dismantle the slider, can accomplish the installation dismantlement of tensioning large roll, the operation is very simple and convenient.

2. Through fixed vertical draw runner on the left and right sides inner wall of channel-section steel, offer the spout on the slider, spout and vertical draw runner sliding fit, vertical draw runner and spout can be spacing to the slider, guarantee that the slider removes along vertical direction, avoid the slider deflection.

3. Through the inboard fixed card rack of middle wallboard at the channel-section steel, fixed elastic plate on the slider, fixed fixture block on the elastic plate, then the spring is when pulling slider downwardly moving, and the elastic plate moves down along with the slider together, in the in-process that removes, the fixture block on the elastic plate can block into the card rack, the cooperation of fixture block and card rack prevents to a certain extent that the slider from upwards resetting the removal, guarantees the tensioning force to the conveyer belt.

4. Through seting up the card hole in the downside of every tooth of latch strip, the fixture block top surface is fixed with the lug that can block into the card hole, in the fixture block card advances the card rack in, the lug also can block into the card hole, further prevents that the slider from upwards moving and resetting, guarantees the stability of tensioning the large roll.

Drawings

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic diagram of a first embodiment of the present utility model;

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a second schematic diagram of the structure of the present utility model;

FIG. 5 is an enlarged view of FIG. 4 at B;

FIG. 6 is a schematic view of the connection structure of the rack and the block on the bracket;

FIG. 7 is an enlarged view of FIG. 6 at C;

In the figure: 1. tensioning the large roller; 2. a bracket; 201. channel steel; 202. a top plate; 203. a bottom plate; 204. a support plate; 3. tensioning the small roller; 4. an intermediate frame; 5. a screw; 6. a slide block; 7. a nut; 8. a spring; 9. a connecting block; 10. a chute; 11. a support; 12. a clamping rack; 13. an elastic plate; 14. a clamping block; 15. a clamping hole; 16. a bump; 17. a conveyor belt; 18. a slide bar.

Detailed Description

The utility model is described in further detail below with reference to fig. 2-7. For the sake of clarity, only the structures related to the utility model are shown in the drawings.

For convenience of description, the coordinate system is defined as shown in fig. 2, and the left-right direction is a transverse direction, the front-rear direction is a longitudinal direction, and the up-down direction is a vertical direction.

The embodiment of the utility model discloses a conveyer belt tensioning device. Referring to fig. 2 and 4, a conveyor belt tensioning device comprises two brackets 2, a large tensioning roller 1 and two small tensioning rollers 3, wherein the two brackets 2 are fixedly connected with two middle frames 4 in a front-back symmetrical mode, the middle frames 4 are part of a conveyor and fixedly supported by supporting legs (not shown in the drawing), the two small tensioning rollers 3 are located on the left side and the right side of the brackets 2 and are connected to the middle frames 4 through supports 11 in a rotating mode, the brackets 2 comprise channel steel 201, a top plate 202 is fixed to the top of the channel steel 201, a bottom plate 203 is fixed to the bottom of the channel steel 201, screws 5 are fixed between the top plate 202 and the bottom plate 203, supporting plates 204 are fixed to two sides of the channel steel 201, and the supporting plates 204 are connected with the middle frames 4 through bolts.

As shown in fig. 5 and 6, the screw 5 is sleeved with a sliding block 6 capable of sliding freely along the sliding block and a nut 7 in threaded connection with the sliding block, the sliding block 6 is positioned below the nut 7, and springs 8 are fixedly connected between the bottoms of the two sliding blocks 6 and a bottom plate 203 at the bottom of the bracket 2.

As shown in fig. 3, in order to avoid the deflection of the sliding block 6 during the movement process, the inner walls of the left and right sides of the channel steel 201 are both fixed with vertical sliding strips 18, as shown in fig. 6, the left and right sides of the sliding block 6 are provided with sliding grooves 10 matched with the vertical sliding strips 18, the sliding strips 18 are embedded in the sliding grooves 10 of the sliding block 6 in a sliding fit manner, and the vertical sliding strips 18 and the sliding grooves 10 can limit the sliding block 6 to ensure that the sliding block 6 moves along the vertical direction.

In addition, as shown in fig. 5 and 6, two connecting blocks 9 are slidably disposed on opposite sides of the two sliding blocks 6, the connecting blocks 9 can be slidably connected in the sliding blocks 6, the connecting blocks 9 and the sliding blocks 6 can be locked by bolts, rotating holes (not shown in the drawing) are formed in the two connecting blocks 9, and two ends of a roll shaft of the tensioning large roll 1 are rotatably clamped in the two rotating holes. The conveyor belt 17 passes over the top of one of the small tension rollers 3 and then bypasses the large tension roller 1 and passes out of the other small tension roller 3.

In addition, as shown in fig. 6 and 7, the inside of the middle wall plate of the channel steel 201 is fixed with a latch bar 12, teeth of the latch bar 12 are inclined downward, one side of the slider 6 close to the latch bar 12 is fixed with an elastic plate 13, the bottom of the elastic plate 13 is fixed with the slider 6, the top of the elastic plate is inclined to one side far away from the slider 6, and a clamping block 14 matched with the latch bar 12 is fixed on the elastic plate 13. When the spring 8 pulls the sliding block 6 to move downwards, the elastic plate 13 moves downwards along with the sliding block 6, the clamping block 14 on the elastic plate 13 can be clamped into the clamping tooth bar 12 in the moving process, and the clamping block 14 and the clamping tooth bar 12 are matched, so that the sliding block 6 is prevented from moving upwards in a resetting way to a certain extent, and the tensioning force on the conveying belt 17 is ensured. Further, a clamping hole 15 is formed at the lower side of each tooth of the clamping rack 12, and a protruding block 16 capable of being clamped into the clamping hole 15 is fixed on the top surface of the clamping block 14. After the clamping block 14 is clamped into the clamping tooth strip 12, the protruding block 16 can also be clamped into the clamping hole 15, so that the sliding block 6 is further prevented from moving upwards to reset, and the stability of the tensioning large roller 1 is ensured.

The implementation principle and the technical effect of the embodiment are as follows: the screw rod 5 is fixed on the bracket 2, the screw rod 5 is sleeved with the sliding block 6 and the nut 7 in threaded connection, the nut 7 is arranged above the sliding block 6, the bottom of the sliding block 6 is connected with the bottom of the bracket 2 through the spring 8, the sliding block 6 is moved downwards, the sliding block 6 drives the tensioning large roller 1 to move downwards, and then the nut 7 is screwed, so that the nut 7 is propped against the upper part of the sliding block 6, and the tensioning work of the conveying belt 17 is completed; with the use of the conveyor, when the tension of the conveyor belt 17 is reduced due to the extension of the conveyor belt 17, the sliding block 6 can be pulled to move downwards under the reset action of the spring 8, so that the tensioning of a certain degree can be automatically carried out, then the nuts 7 are screwed at certain intervals, the nuts 7 are propped against the sliding block 6, the neutral period of the slipping of the conveyor belt 17 is avoided or reduced, the period of manually adjusting the tensioning is greatly prolonged, and the normal operation of the conveyor belt 17 is ensured;

In addition, all slide and set up connecting block 9 in the side that two sliders 6 are faced, connecting block 9 passes through the bolt lock with slider 6 and connects, set up the commentaries on classics hole on two connecting blocks 9, the rotatable joint in two commentaries on classics holes in the roller both ends of tensioning large roll 1, then when dismantling tensioning large roll 1, at first, dismantle the bolt of connecting on connecting block 9 and slider 6, then slide connecting block 9 to slider 6, then expose the roller of tensioning large roll 1, then can directly dismantle tensioning large roll 1, when will installing tensioning large roll 1, slide connecting block 9 to slider 6 earlier, then hold in the high of connecting block 9 with tensioning large roll 1, then slide connecting block 9 outwards to connecting block 9 block the roller of tensioning large roll 1, then use bolt locking slider 6 and connecting block 9 can, can accomplish the installation dismantlement of tensioning large roll 1, the operation is very simple and convenient.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. It should be understood that the detailed description is presented for purposes of understanding only and is not intended to limit the utility model to all other embodiments that may be obtained by one skilled in the art without making any inventive effort.

Claims (6)

1. The utility model provides a conveyer belt overspeed device tensioner, includes two supports, a tensioning big roller and two tensioning little rollers, two symmetrical and two middle frame fixed connection around the support, two tensioning little rollers are located the left and right sides of support to both ends all pivoted connect in middle frame, its characterized in that: all vertically be fixed with a screw rod on every support, the cover is equipped with a slider that can follow its free slip and a nut rather than threaded connection on the screw rod, the slider is located the below of nut, two equal fixedly connected with spring between the bottom of slider and the bottom of support, two slider opposite sides all slide and are provided with a connecting block, and the connecting block passes through the bolt lock with the slider and connects, has seted up the commentaries on classics hole on classics hole on two connecting blocks, and the rotatable joint in two commentaries on classics downthehole at the roller both ends of tensioning large roll.

2. A conveyor belt tensioner as in claim 1 wherein: the support includes the channel-section steel, and the top of channel-section steel is fixed with the roof, and the bottom of channel-section steel is fixed with the bottom plate, and the screw rod is fixed between roof and bottom plate, the both sides of channel-section steel are fixed with the extension board, the extension board passes through bolted connection with the intermediate frame.

3. A conveyor belt tensioner as in claim 2 wherein: the inner walls of the left side and the right side of the channel steel are respectively fixed with a vertical sliding bar, the left side and the right side of the sliding block are provided with sliding grooves matched with the vertical sliding bars, and the sliding bars are embedded in the sliding grooves of the sliding block in a sliding fit manner.

4. A conveyor belt tensioner as in claim 1 wherein: the two tensioning small rollers are both rotatably connected with the middle frame through the support.

5. A conveyor belt tensioner as in claim 2 wherein: the middle wallboard inboard of channel-section steel is fixed with the card rack, and the tooth downward sloping setting of card rack, one side that the slider is close to the card rack is fixed with an elastic plate, the elastic plate bottom is fixed with the slider, and the top is to the one side slope of keeping away from the slider, be fixed with on the elastic plate with card rack complex fixture block.

6. A conveyor belt tensioner as in claim 5 wherein: the lower side of each tooth of the latch strip is provided with a clamping hole, and the top surface of the clamping block is fixed with a lug capable of being clamped into the clamping hole.