Roll rotating winding and unwinding type conveying belt

Abstract

The invention discloses a roller rotating winding and unwinding type conveying belt which comprises a rack, two telescopic cylinders are rotationally installed at the two ends of the rack respectively, a driving roller is installed between the two telescopic cylinders on the same end side, a belt is arranged between the two driving rollers to form a conveying face, and a plurality of guide rollers and a rotary disc are arranged below the conveying face. Every two rotary tables are distributed on the two sides of the belt, every two guide rollers are installed between the rotary tables to form a roller set, and the belt is sequentially installed on the two guide rollers in each roller set. The synchronous movement of the driving rollers and the roller sets can adjust the height of the belt between the two driving rollers and the length of a conveying path. The guide rollers on the multiple linearly arranged roller sets rotate to wind the belt to form the storage area used for storing the belt so as to increase the containing capacity of the belt to increase the adjusting range, and the guide rollers located on the two sides of the belt wind or release the belt by rotating the roller sets so as to adapt to position adjustment of the driving roller, so that the belt can be automatically adjusted. The size of the belt can be adjusted based on the position adjustment of the driving roller.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyor belts, and particularly to a roller-rolled rotary retractable conveyor belt, mainly related to the belt retraction and extension during the adjustment of the conveyor belt conveying path. Background Art

[0002] An adjustable conveying system is usually composed of multiple adjustable conveyor belts. The conveying length of the adjustable conveyor belt can be adjusted according to requirements, so that when the production line needs to increase efficiency and production, the production line can be reorganized more conveniently, or based on the requirements of different material handling, the conveying height can be adjusted to switch the conveying destination equipment of the material, such as a low-temperature furnace area, a high-temperature furnace area, etc.

[0003] Currently, adjustable conveyor belts usually adopt a sleeve plate telescopic conveyor belt, that is, multiple conveyor belts of different specifications are combined in a socketed manner, so as to form a conveyor belt with a combined stepped structure after elongation to achieve the adjustment of the conveying length dimension, and the largest specification conveyor belt is supported by a base and can adjust the inclination angle to achieve the adjustment of the conveying angle dimension. Although this sleeve plate telescopic conveyor belt can achieve the adjustment of the conveying length dimension and the angle dimension, since the sleeve plate telescopic structure usually performs multi-section telescoping on the same side, during the telescoping process, the longer the elongation length, the more unstable its end is due to the lever effect. Therefore, the sleeve plate telescopic conveyor belt is usually two or three sections for stable use, and its length adjustable range is limited, making it difficult to achieve a large range of length dimension adjustment. In addition, due to the difficulty of forming two-way adjustment docking in the line with single-side adjustment, it is difficult to form an adjustable conveying system.

[0004] Therefore, the existing single-side adjustable sleeve plate telescopic conveyor belt is limited by the stability of single-side adjustment and is difficult to achieve a large range of length adjustment, and is difficult to perform two-way adjustment, so it is difficult to achieve multi-conveyor belt joint adjustment to change the line of the conveying system in the production line. Summary of the Invention

[0005] The purpose of the present invention is to provide a roller-rolled rotary retractable conveyor belt, specifically providing a conveyor belt that realizes belt retraction and extension through roller-rolled belts to adapt to the adjustment of the conveying path, so as to solve the technical problems in the prior art that it is difficult to achieve a large range of length adjustment due to the limited stability of single-side adjustment, and it is difficult to perform two-way adjustment, so it is difficult to achieve multi-conveyor belt joint adjustment to change the line of the conveying system in the production line.

[0006] To solve the above technical problems, the present invention specifically provides the following technical solutions: A roller-rolled rotary retractable conveyor belt, comprising: A frame; A driving roller, one driving roller is provided at each end of the frame, and a belt is provided between the two driving rollers to form a conveying surface; Telescopic cylinders are provided at the shaft ends of the driving rollers respectively, and the other ends of the telescopic cylinders are rotatably mounted at the ends of the frame. The telescopic cylinders located at both ends of the frame adjust the relative positions between the two driving rollers by telescoping and rotating; Guide rollers. A plurality of guide rollers with a length direction consistent with the width direction of the belt are arranged on the frame along the conveying direction. The return section of the belt sequentially passes through the gaps between every two guide rollers, and the belt abuts against the surface of each guide roller to increase the total length of the belt; Rotary discs are rotatably arranged on the frame. A plurality of rotary discs are arranged in the conveying direction of the belt. Each two rotary discs form a group and are respectively arranged on both sides in the width direction of the belt in a directly opposite manner. Each two guide rollers are arranged in parallel between each group of rotary discs to form a roller group, and the guide rollers can rotate freely relative to the rotary discs. The rotary discs rotate to wind the belt by the two guide rollers to increase the total length of the belt; The synchronous movement of the driving rollers and the roller group can adjust the height and the conveying path length of the belt between the two driving rollers.

[0007] As a preferred embodiment of the present invention, a shaft column is provided in the middle of the outer side of each rotary disc. The rotary disc is rotatably mounted on the frame through the shaft column, and the end of the shaft column extends to the outside of the frame. The rotary disc can rotate the two guide rollers to release or contract the belt.

[0008] As a preferred embodiment of the present invention, a worm is provided on the frame. A plurality of worm wheels are connected to the worm. The worm drives the plurality of worm wheels to rotate synchronously, and the plurality of worm wheels are respectively mounted at the ends of the plurality of shaft columns to drive the plurality of roller groups to rotate synchronously; An axial pressure sensor is provided at the end of the worm. The axial pressure sensor is used to detect the axial force exerted by the worm wheel on the worm, and the tension force of the belt acting on the two guide rollers is converted into the rotational force of the roller group and transmitted to the worm wheel; Wherein, the worm is connected to the shaft of the driving motor of the worm through the axial pressure sensor, and the driving motor controls the worm according to the comparison result of the detected value of the axial pressure sensor and the preset threshold value.

[0009] As a preferred embodiment of the present invention, two first diameter-expanding rollers are provided on the turntable. The two first diameter-expanding rollers are respectively arranged on one side of the guiding roller facing the opposite direction of the rotation of the turntable, and the distance between the first diameter-expanding roller and the axis of the turntable is greater than or equal to the distance between the guiding roller and the axis of the turntable. When the guiding roller winds the belt by the rotation of the turntable, the first diameter-expanding roller expands the belt outward to increase the rotatable angle of the turntable; Two second diameter-expanding rollers are provided on the turntable. The two second diameter-expanding rollers are respectively arranged on one side of the guiding roller facing the rotation direction of the turntable, and the distance between the second diameter-expanding roller and the axis of the turntable is greater than or equal to the distance between the guiding roller and the axis of the turntable. When the guiding roller winds the belt by the rotation of the turntable, the second diameter-expanding roller expands the belt outward for the second time to increase the rotatable angle of the turntable; Wherein, the winding length of the belt is positively correlated with the rotatable angle of the turntable.

[0010] As a preferred embodiment of the present invention, the cylinder body ends of the two telescopic cylinders are respectively rotatably installed on both sides of the frame, and the shaft end of the driving roller is installed at the cylinder rod ends of the two telescopic cylinders on the same side to be rotated and / or adjusted in position by the telescopic cylinder.

[0011] As a preferred embodiment of the present invention, two double-headed cylinders are symmetrically arranged on the frame. The two cylinder rod ends of the double-headed cylinder are respectively rotatably installed on the two telescopic cylinders at the same side and different ends of the frame. The double-headed cylinder is used to extend and push the two telescopic cylinders away from each other, or shorten and pull the two telescopic cylinders close to each other to synchronously adjust the angles of the two telescopic cylinders; Wherein, the middle part of the cylinder body of the double-headed cylinder is arranged on the frame to limit the horizontal movement of the cylinder body of the double-headed cylinder.

[0012] As a preferred embodiment of the present invention, a connecting rod is provided at the cylinder body end of the telescopic cylinder. The connecting rod is installed at a fixed angle with the telescopic cylinder and extends downward. The two cylinder rod ends of the double-headed cylinder are movably installed on the two connecting rods on the same side.

[0013] As a preferred embodiment of the present invention, a channel is provided through the connecting rod. Two sliders are symmetrically and slidably installed on the inner wall of the channel, and the cylinder rod end of the double-headed cylinder is rotatably installed between the two sliders.

[0014] As a preferred embodiment of the present invention, the double-headed cylinder includes two cylinder barrels which are fixed to each other. A piston cylinder rod is installed in each cylinder barrel, and the orientations of the two piston cylinder rods are opposite; An eccentric plate is provided at the end of the piston cylinder rod located outside the cylinder barrel. An assembly plate is mounted on the eccentric plate. The assembly plate is rotatably mounted between the two sliders, and the two cylinder barrels are symmetrically distributed on both sides of the assembly plate; Among them, the two piston cylinder rods work independently.

[0015] As a preferred solution of the present invention, connecting frames are provided at both ends of each driving roller. The connecting frames are in a concave structure and face the inner side of the driving roller. A scissor expansion and contraction frame is commonly provided between the two connecting frames; Among them, a plurality of auxiliary rollers are provided on the scissor expansion and contraction frame. The plurality of auxiliary rollers are used to support the belt between the two driving rollers; Support rods are provided on each pin shaft of the scissor expansion and contraction frame. A roller support bracket is provided on each support rod. The auxiliary roller is rotatably mounted on the roller support bracket, and the auxiliary roller abuts against the bottom surface of the belt located between the two driving rollers.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the guide rollers on a plurality of linearly arranged roller groups rotate to wind up the belt to form a storage area for storing the belt, so as to increase the belt accommodation capacity and achieve an increase in the adjustment range. And by rotating the roller group, the guide rollers on both sides of the belt wind up or release the belt to adaptively adjust the position of the driving roller, so that the belt size can be adjusted to be retractable based on the position adjustment of the driving roller. Description of the Drawings

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0018] Figure 1 It is a schematic structural diagram of a roller winding rotation retractable conveyor belt provided by an embodiment of the present invention; Figure 2 It is a schematic partial structural diagram of the roller group of a roller winding rotation retractable conveyor belt provided by an embodiment of the present invention; Figure 3 It is a schematic partial structural diagram of the guide roller of a roller winding rotation retractable conveyor belt provided by an embodiment of the present invention; Figure 4 It is a schematic partial structural diagram of the scissor expansion and contraction frame of a roller winding rotation retractable conveyor belt provided by an embodiment of the present invention; Figure 5Schematic diagram of the double-headed cylinder part of the roller-rolled rotary retractable conveyor belt provided by the embodiment of the present invention.

[0019] The reference numerals in the figure are respectively represented as follows: 1 - Frame; 2 - Driving roller; 3 - Roller group; 4 - Worm 11 - Telescopic cylinder; 12 - Double-headed cylinder; 13 - Connecting rod; 21 - Belt; 22 - Connecting frame; 23 - Scissor telescopic frame; 24 - Auxiliary roller; 31 - Guide roller; 32 - Turntable; 33 - Axial column; 34 - First diameter-expanded roller; 35 - Second diameter-expanded roller; 41 - Worm gear; 42 - Axial pressure sensor 121 - Cylinder barrel; 122 - Piston cylinder rod; 123 - Eccentric plate; 124 - Assembly plate; 131 - Channel; 132 - Slide block; 231 - Support rod; 232 - Roller support Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0021] As Figure 1 shown, the present invention provides a roller-rolled rotary retractable conveyor belt, including: Frame 1; Driving rollers 2, with a driving roller 2 provided at each end of the frame 1, and a belt 21 is provided between the two driving rollers 2 to form a conveying surface; Telescopic cylinders 11, with a telescopic cylinder 11 provided at each shaft end of the driving roller 2, and the other end of the telescopic cylinder 11 is rotatably installed at the end of the frame 1. The telescopic cylinders 11 at both ends of the frame 1 adjust the relative position between the two driving rollers 2 through telescoping and rotation.

[0022] Specifically: When the two telescopic cylinders 11 rotate upward, the two driving rollers 2 rise to raise the conveying path (i.e., the conveying surface) of the belt 21, and the distance between the two driving rollers 2 decreases, shortening the conveying path. And during this process, if the telescopic cylinder 11 extends, the distance between the two driving rollers 2 remains unchanged or increases, so that while the conveying path rises, the length of the conveying path is maintained or increased. Or during this process, if the telescopic cylinder 11 shortens, the distance between the two driving rollers 2 decreases, so that while the conveying path rises, the conveying path is further shortened.

[0023] When the two telescopic cylinders 11 rotate downward, the two driving rollers 2 descend, causing the conveying path of the belt 21 to descend, and the distance between the two driving rollers 2 increases, elongating the conveying path. During this process, if the telescopic cylinder 11 shortens, the distance between the two driving rollers 2 remains unchanged or decreases, causing the conveying path to descend while maintaining or shortening the length of the conveying path. Or during this process, if the telescopic cylinder 11 elongates, the distance between the two driving rollers 2 increases, causing the conveying path to descend while further elongating the conveying path.

[0024] It also includes: Guide rollers 31, a plurality of guide rollers 31 are arranged on the frame 1 along the conveying direction with the length direction consistent with the width direction of the belt 21. The return section of the belt 21 sequentially passes through the gaps between every two guide rollers 31, and the belt 21 abuts against the surface of each guide roller 31 to increase the total length of the belt 21; Turntables 32, rotatably arranged on the frame 1, a plurality of turntables 32 are arranged in the conveying direction of the belt 21. Every two turntables 32 form a group, and are respectively arranged opposite to each other on both sides in the width direction of the belt 21. Every two guide rollers 31 are arranged parallel to each other between each group of turntables 32 to form a roller group 3, and the guide rollers 31 can rotate freely relative to the turntables 32. The turntables 32 rotate to wind the belt 21 around the two guide rollers 31 to increase the total length of the belt 21; The synchronous movement of the driving rollers 2 and the roller group 3 can adjust the height of the belt 21 between the two driving rollers 2 and the length of the conveying path.

[0025] Specifically, the belt 21 passes through one of the guide rollers 31 of the first roller group 3 and exits reversely from the other guide roller 31, then passes through one of the guide rollers 31 of the second roller group 3 and exits reversely from the other guide roller 31, and is sequentially inserted through the guide rollers 31 of all the roller groups 3, so that the belt 21 is bent multiple times within the roller group 3 to increase its length.

[0026] When the belt 21 between the two guide rollers 31 of each roller group 3 is rotated by the turntable 32 to be in a horizontal state, the conveying path can be adjusted to the longest. And when the two guide rollers 31 of each roller group 3 are rotated by the turntable 32 to wind the belt 21 around the two guide rollers 31 from the horizontal state, the rotation angle of the turntable 32 does not exceed 150 degrees, preferably does not exceed 90 degrees, that is, to avoid the belts 21 on the guide rollers 31 between adjacent roller groups 3 from contacting and interfering with each other.

[0027] Through the adjustment of multiple roller groups 3, the length of the conveying surface can be changed maximally, and the multiple roller groups 3 can be controlled independently or synchronously.

[0028] The turntable 32 can be manually controlled to rotate and then manually fixed or locked for adjustment, or it can be controlled to rotate by a driving device.

[0029] Specifically, when adjusting the length and height of the conveying path, the turntables 32 are preferably unlocked first. Then, when the driven roller 2 is adjusted in position by the telescopic cylinder 11, the two guiding rollers 31 within the roller group 3 are rotated by the belt 21, so that the two guiding rollers 31 release the belt. After the adjustment is completed, the telescopic cylinder 11 is locked, and then the turntable 32 is rotated to make the two guiding rollers 31 wind up the belt 21 therein to maintain the tension.

[0030] The present invention aims to form a storage area for storing the belt 21 by rotating and winding the belt 21 by the guiding rollers 31 on multiple roller groups 3 arranged in a straight line, so as to increase the accommodation capacity of the belt 21 and achieve an increase in the adjustment range. And by rotating the roller group 3, the guiding rollers 31 on both sides of the belt 21 wind up or release the belt 21 to adaptively adjust to the position adjustment of the driving roller 2, so that the size of the belt 21 can be adjusted for winding and unwinding based on the position adjustment of the driving roller 2.

[0031] Specifically: The conveyor belt of the present invention mainly has multiple roller groups 3 arranged in a straight line below the two driving rollers 2. Each roller group 3 can rotate and work synchronously. There are two rotatable guiding rollers 31 on the roller group 3, and the two guiding rollers 31 are respectively located on both sides of the belt 21, that is, the belt 21 passes between the two guiding rollers 31. Then, when the roller group 3 rotates forward, the two guiding rollers 31 can wind up the belt 21 to complete storage, and when the roller group 3 rotates in reverse, the two guiding rollers 31 can release the wound belt 21 to complete release. Thus, when the driving roller 2 is adjusted in position by the telescopic cylinder 11, the roller group 3 rotates to adjust the winding and unwinding of the belt 21, so as to realize the winding and unwinding of the belt 21 adapting to the position adjustment of the driving roller 2.

[0032] Compared with the existing telescopic conveyor belt with a sleeve plate, the conveyor belt of the present invention can store a longer belt 21 in a coiling manner in a smaller space below the two driving rollers 2, thereby increasing the adjustable range of the belt 21 to adapt to a larger range of adjustment of the driving roller 2, and enabling the conveyor belt to achieve a wider range of adjustment in length and height.

[0033] The unlocking and locking of the turntable 32, as Figure 1 、 Figure 2 shown, a shaft column 33 is provided in the middle of the outer side of each turntable 32. The turntable 32 is rotatably mounted on the frame 1 through the shaft column 33, and the end of the shaft column 33 extends to the outside of the frame 1. The turntable 32 can rotate the two guiding rollers 31 to release or contract the belt 21.

[0034] In this embodiment, by locking and unlocking the shaft column 33, the locking and unlocking of the turntable 32 and the roller group 3 can be achieved, which can be completed by a shaft lock or other corresponding locking parts.

[0035] Among them, the driving roller 2 is driven by a motor and a transmission box assembly. The motor and the transmission box assembly are installed on the telescopic cylinder 11. Since it is a conventional structure part of the conveyor belt, it is not shown in the figure and will not be elaborated here. Of course, the two driving rollers 2 can also be set as one driving roller and one driven roller, which are set as required based on the load demand.

[0036] Since multiple roller groups 3 control the effective length of the belt 21 in a synchronous adjustment manner, and the adjustment of the roller group 3 is dynamically adjusted according to the position of the driving roller 2 adjusted by the telescopic cylinder 11, the following preferred embodiments are provided.

[0037] As Figure 1 、 Figure 2 shown, a worm 4 is provided on the frame 1. A plurality of worm wheels 41 are connected to the worm 4. The worm 4 drives the plurality of worm wheels 41 to rotate synchronously, and the plurality of worm wheels 41 are respectively installed at the rotating shaft ends of the plurality of roller groups 3 to drive the plurality of roller groups 3 to rotate synchronously; An axial pressure sensor 42 is provided at the end of the worm 4. The axial pressure sensor 42 is used to detect the axial force exerted by the worm wheel 41 on the worm 4, and the tension force of the belt 21 acting on the two guide rollers 31 is converted into the rotational force of the roller group 3 and transmitted to the worm wheel 41; Among them, the worm 4 is connected to the shaft of the driving motor of the worm 4 through the axial pressure sensor 42, and the driving motor controls the worm 4 according to the comparison result between the detected value of the axial pressure sensor 42 and the preset threshold value.

[0038] In this embodiment, by providing worm wheels 41 at the shaft ends of the roller group 3, the plurality of worm wheels 41 are cooperated with the worm 4 to achieve synchronous drive, and the cooperation between the worm 4 and the worm wheel 41 can form self-locking, avoiding the reverse rotation of the roller group 3 after adjustment or under the action of rotational force, and improving the adjustment accuracy.

[0039] And an axial pressure sensor 42 is provided at the connection between the shaft end of the worm 4 and the driving motor, so that after the rotational force of the worm wheel 41 is applied to the worm 41, the worm 4 can axially press on the axial pressure sensor 42, thereby detecting the internal force of the belt 21 during storage. By setting the upper and lower threshold values of the internal force during storage, the driving motor adjusts according to the comparison result between the detected value and the upper and lower threshold values. Specifically: When the telescopic cylinder 11 drives the distance between the two driving rollers 2 to increase, the tightened belt 21 will generate a rotational force on the two guiding rollers 31. At this time, the roller set 3 has a tendency to rotate, causing the worm gear 41 to apply an axial force to the worm 4. At this time, when the axial pressure sensor 42 detects that the pressure increase exceeds the maximum threshold, the driving motor rotates the worm 4 to drive the worm gear 41 to rotate, releasing the belt 21 wound around the guiding roller 31, thereby reducing the rotational force exerted by the belt 21 on the two guiding rollers 31 and maintaining the detected value between the maximum threshold and the minimum threshold.

[0040] Or when the telescopic cylinder 11 drives the distance between the two driving rollers 2 to decrease, the belt 21 loosens and reduces the rotational force on the two guiding rollers 31. At this time, the rotational tendency of the roller set 3 weakens, causing the axial force exerted by the worm gear 41 on the worm 4 to decrease. At this time, when the axial pressure sensor 42 detects that the pressure decrease exceeds the minimum threshold, the driving motor rotates the worm 4 to drive the worm gear 41 to rotate, winding the belt 21 on the guiding roller 31, thereby increasing the rotational force exerted by the belt 21 on the two guiding rollers 31 and maintaining the detected value between the maximum threshold and the minimum threshold.

[0041] It can be seen from this that the driving motor adjusts according to the comparison result between the detected value of the axial pressure sensor 42 and the threshold value, can release or store the belt 21 and can ensure that the tension of the belt 21 is maintained within a certain range.

[0042] Based on the above embodiments, the roller set 3 is rotatably installed on the frame 1, and the roller set 3 can drive the two guiding rollers 31 to rotate synchronously along their axes. Based on this, the following preferred embodiments are provided.

[0043] As Figure 2 shown, the roller set 3 includes two turntables 32, and the two guiding rollers 31 on the roller set 3 are rotatably installed between the two turntables 32, and the two guiding rollers 31 are arranged away from the axes of the turntables 32; On one side of the turntable 32 away from the guiding roller 31, a shaft column 33 is centrally arranged. The turntable 32 is rotatably installed on the frame 1 through the shaft column 33, and the end of one of the shaft columns 33 passes through the frame 1 and is assembled with the worm gear 41.

[0044] In this embodiment, each roller set 3 is rotatably installed on the frame 1 by two turntables 32 through the shaft columns 33 in the middle thereof, and the worm gear 41 is installed on the shaft column 33 of one of the turntables 32 to drive the turntable 32 to rotate. The two turntables 32 are connected by two guiding rollers 31, so that when the worm gear 41 rotates, it can drive the two turntables 32 to rotate synchronously, that is, drive the roller set 3 to rotate.

[0045] During the rotation of the roller group 3, the two guiding rollers 31 can wind the belt 21. However, due to the limited diameter of the guiding rollers 31, the amount of the belt 21 that can be wound is limited, resulting in a small amount of the belt 21 accommodated by each roller group 3. Therefore, in order to further improve the accommodation capacity of the belt 21, the following preferred embodiments are provided.

[0046] As Figure 3 shown, two first diameter-expanding rollers 34 are provided on the turntable 32. The two first diameter-expanding rollers 34 are respectively arranged on one side of the guiding roller 31 facing the reverse direction of the rotation of the turntable 32, and the distance between the first diameter-expanding roller 34 and the axis of the turntable 32 is greater than or equal to the distance between the guiding roller 31 and the axis of the turntable 32. When the guiding roller 31 winds the belt 21 by the rotation of the turntable 32, the first diameter-expanding roller 34 expands and supports the belt 21 outward to expand the rotatable angle of the turntable 32; Two second diameter-expanding rollers 35 are provided on the turntable 32. The two second diameter-expanding rollers 35 are respectively arranged on one side of the guiding roller 31 facing the rotation direction of the turntable 32, and the distance between the second diameter-expanding roller 35 and the axis of the turntable 32 is greater than or equal to the distance between the guiding roller 31 and the axis of the turntable 32. When the guiding roller 31 winds the belt 21 by the rotation of the turntable 32, the second diameter-expanding roller 35 expands and supports the belt 21 outward for the second time to expand the rotatable angle of the turntable 32; Among them, the winding length of the belt 21 is positively correlated with the rotatable angle of the turntable 32.

[0047] In this embodiment, by adding the first diameter-expanding roller 34 on one side of the guiding roller 31 facing the reverse direction of the rotation of the turntable 32, when the turntable 32 rotates to wind the belt 21, the belt 21 can cover the first diameter-expanding roller 34, thereby extending the rewinding path of the belt 21 and effectively improving the accommodation capacity of the belt 21.

[0048] Moreover, by adding the second diameter-expanding roller 35 on one side of the guiding roller 31 facing the rotation direction of the turntable 32, when the turntable 32 rotates to wind the belt 21, the belt 21 can be wound around the second diameter-expanding roller 35 again to form a second layer of winding, further improving the accommodation capacity of the belt 21.

[0049] Based on the above embodiments, when adjusting the height and / or spacing of the two driving rollers 2, the telescopic cylinder 11 needs to expand and contract and / or rotate. Based on this, the following preferred embodiment of the telescopic cylinder 11 is provided.

[0050] As Figure 1 shown, the telescopic cylinder 11 includes two telescopic cylinders 11. The cylinder ends of the two telescopic cylinders 11 are respectively rotatably installed on both sides of the frame 1, and the shaft ends of the driving roller 2 are installed at the cylinder rod ends of the two telescopic cylinders 11 on the same side to be rotated and / or adjusted in position by the telescopic cylinder 11.

[0051] In this embodiment, the telescopic cylinder 11 consists of two telescopic cylinders 11, and the end of the cylinder body of the telescopic cylinder 11 is rotatably installed on the frame 1. When the two telescopic cylinders 11 rotate and extend / contract, the driving roller 2 can move up and down and / or horizontally, thereby realizing the height adjustment and spacing adjustment of the two driving rollers 2, that is, adjusting the height dimension and length dimension of the belt 21.

[0052] Of course, the rotational adjustment of the telescopic cylinder 11 requires a driving source. Based on this, the following preferred embodiment is provided.

[0053] As Figure 1 shown, double-headed cylinders 12 are provided on the two telescopic cylinders 11 on the same side of the two telescopic cylinders 11. The two rod ends of the double-headed cylinder 12 are rotatably installed on the two telescopic cylinders 11 respectively. The double-headed cylinder 12 is used to extend and push the two telescopic cylinders 11 away from each other, or shorten and pull the two telescopic cylinders 11 closer to each other to synchronously adjust the angles of the two telescopic cylinders 11; Among them, the middle part of the cylinder body of the double-headed cylinder 12 is arranged on the frame 1 to limit the horizontal movement of the cylinder body of the double-headed cylinder 12.

[0054] In this embodiment, the double-headed cylinder 12 is used to synchronously drive the two telescopic cylinders 11. That is, when the rod of the double-headed cylinder 12 extends and contracts, the telescopic cylinders 11 on both sides are pushed and pulled, thereby adjusting the angle of the telescopic cylinder 11, that is, rotating the telescopic cylinder 11 to change the height of the driving roller 2; Among them, the rod end of the double-headed cylinder 12 is rotatably installed on the telescopic cylinder 11. At this time, the double-headed cylinder 12 is installed on the frame 1 and restricted by the frame 1 so that it can only slide up and down. Then, when the telescopic cylinder 11 rotates, the double-headed cylinder 12 can move up and down with the rotation of the telescopic cylinder 11; Or, the rod end of the double-headed cylinder 12 is rotatably installed on the telescopic cylinder 11, and the rod end of the double-headed cylinder 12 is slidably arranged on the telescopic cylinder 11. At this time, the double-headed cylinder 12 is fixed on the frame 1 so that it cannot move. Then, when the telescopic cylinder 11 rotates, the rod end of the double-headed cylinder 12 can rotate and slide on the telescopic cylinder 11.

[0055] Based on the above embodiment, the connection method between the double-headed cylinder 12 and the telescopic cylinder 11 is as Figure 4 shown. A connecting rod 13 is provided at the end of the cylinder body of the telescopic cylinder 11. The connecting rod 13 is installed at a fixed angle with the telescopic cylinder 11 and extends downward. The two rod ends of the double-headed cylinder 12 are movably installed on the two connecting rods 13 on the same side.

[0056] In this embodiment, the connecting rod 13 is fixed to the end of the cylinder body of the telescopic cylinder 11, and the end of the cylinder body of the telescopic cylinder 11 is rotatably installed on the frame 1. Then, when the double-headed cylinder 12 pushes and pulls the connecting rod 13, the connecting rod 13 can rotate the telescopic cylinder 11, thereby reducing the required stroke of the double-headed cylinder 12 and reducing the volume of the double-headed cylinder 12.

[0057] In addition, as Figure 5 shown, a channel 131 is penetrated through the connecting rod 13, and two sliders 132 are symmetrically and slidably installed on the inner wall of the channel 131, and the end of the cylinder rod of the double-headed cylinder 12 is rotatably installed between the two sliders 132.

[0058] In this embodiment, by providing the channel 131 on the connecting rod 13, the end of the cylinder rod of the double-headed cylinder 12 can be slidably installed in the channel 131 through the slider 132, so that the double-headed cylinder 12 can be fixedly used, so that the pressure pipeline of the double-headed cylinder 12 can be stably arranged.

[0059] In the above embodiment, the double-headed cylinder 12 is a conventional coaxial double-headed cylinder 12, which can realize synchronous driving and rotation of the telescopic cylinder 11. However, since the conventional double-headed cylinder 12 is usually synchronously driven, it is impossible to independently drive the telescopic cylinder 11 on one side to rotate. And since the length is fixed, the stroke of the cylinder rod of the double-headed cylinder 12 is short, and it is difficult to realize a large-angle rotation of the telescopic cylinder 11, that is, the adjustment range is small. Based on this, the following preferred embodiment is provided.

[0060] As Figure 5 shown, the double-headed cylinder 12 includes two cylinder barrels 121, the two cylinder barrels 121 are fixed to each other, a piston cylinder rod 122 is installed in each cylinder barrel 121, and the orientations of the two piston cylinder rods 122 are opposite; An eccentric plate 123 is provided at the end of the piston cylinder rod 122 outside the cylinder barrel 121, an assembly plate 124 is installed on the eccentric plate 123, the assembly plate 124 is rotatably installed between the two sliders 132, and the two cylinder barrels 121 are symmetrically distributed on both sides of the assembly plate 124; Among them, the two piston cylinder rods 122 work independently.

[0061] In this embodiment, the double-headed cylinder 12 is arranged with two cylinder barrels 121 side by side, and the piston cylinder rods 122 thereof are oriented in opposite directions, so as to obtain a larger stroke distance, and the two cylinder barrels 121 can be independently connected to the pressure pipeline to achieve independent driving, that is, it is possible to realize different rotation angles of the two telescopic cylinders 11, and realize the adjustment of the height difference of the driving roller 2 to realize the climbing or descending adjustment of the belt 21; Among them, the eccentric plate 123 and the assembly plate 124 are used to connect the piston cylinder rod 122 and the slider 132.

[0062] Based on the above embodiment, when the distance between the two driving rollers 2 is increased, that is, when the conveying section of the belt 21 is lengthened, the middle part of the conveyor belt of the belt 21 is more likely to be pressed and collapsed. Therefore, in order to ensure that the belt 21 has sufficient supporting force after being lengthened, the following preferred embodiment is provided.

[0063] As Figure 1 、Figure 4 As shown, connecting frames 22 are provided at both ends of each driving roller 2. The connecting frames 22 are in a concave structure and face the inner side of the driving roller 2. A scissor expansion frame 23 is commonly provided between the two connecting frames 22; Among them, a plurality of auxiliary rollers 24 are provided on the scissor expansion frame 23, and the plurality of auxiliary rollers 24 are used to support the belt 21 between the two driving rollers 2; Support rods 231 are provided on each pin shaft of the scissor expansion frame 23. Roller brackets 232 are provided on each support rod 231. The auxiliary rollers 24 are rotatably installed on the roller brackets 232, and the auxiliary rollers 24 abut against the bottom surface of the belt 21 located between the two driving rollers 2.

[0064] In this embodiment, by providing a telescopic scissor expansion frame 23 between the two driving rollers 2, it can be telescoped following the change in the distance between the two driving rollers 2. Support rods 231 are provided on each pin shaft of the scissor expansion frame 23, and roller brackets 232 are provided on the support rods 231. Then, the auxiliary rollers 24 can be installed through the support rods 231 and the roller brackets 232, thereby realizing the support for the belt 21; Moreover, since the auxiliary rollers 24 are arranged on the structure composed of the support rods 231 and the roller brackets 232, and the support rods 231 are installed on the middle pin shaft of the scissor expansion frame 23, when the scissor expansion frame 23 expands and contracts, the auxiliary rollers 24 move accordingly. That is, when the scissor expansion frame 23 stretches, the distance between the auxiliary rollers 24 increases, and when the scissor expansion frame 23 compresses, the distance between the auxiliary rollers 24 decreases, so as to uniformly support the belt 21.

[0065] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. A roll-rotating retractable conveyor belt, characterized in that, Comprising: A frame (1); Drive rollers (2), with one drive roller (2) provided at each end of the frame (1), and a belt (21) is provided between the two drive rollers (2) to form a conveying surface; A telescopic cylinder (11), with one telescopic cylinder (11) provided at the shaft end of each drive roller (2), and the other end of the telescopic cylinder (11) is rotatably installed at the end of the frame (1). The telescopic cylinders (11) at both ends of the frame (1) adjust the relative position between the two drive rollers (2) by telescoping and rotating; Guide rollers (31), with a plurality of guide rollers (31) arranged on the frame (1) along the conveying direction, the length direction of which is consistent with the width direction of the belt (21). The return section of the belt (21) sequentially passes through the gaps between every two guide rollers (31), and the belt (21) abuts against the surface of each guide roller (31) to increase the total length of the belt (21); Rotary discs (32), rotatably arranged on the frame (1), with a plurality of rotary discs (32) arranged in the conveying direction of the belt (21). Every two rotary discs (32) form a group, and are respectively arranged on both sides of the belt (21) in the width direction opposite to each other. Every two guide rollers (31) are arranged parallel to each other between each group of rotary discs (32) to form a roller group (3), and the guide rollers (31) can rotate freely relative to the rotary discs (32). The rotary discs (32) rotate to wind the belt (21) by the two guide rollers (31) to increase the total length of the belt (21); The synchronous movement of the drive rollers (2) and the roller group (3) can adjust the height and the conveying path length of the belt (21) between the two drive rollers (2).

2. The roll-rotating retractable conveyor belt according to claim 1, characterized in that, A shaft column (33) is provided in the middle of the outside of each rotary disc (32), and the rotary disc (32) is rotatably installed on the frame (1) through the shaft column (33), and the end of the shaft column (33) extends to the outside of the frame (1). The rotary disc (32) can rotate the two guide rollers (31) to release or contract the belt (21).

3. The roll-rotating retractable conveyor belt according to claim 2, characterized in that, A worm (4) is provided on the frame (1), and a plurality of worm wheels (41) are connected to the worm (4). The worm (4) drives the plurality of worm wheels (41) to rotate synchronously, and the plurality of worm wheels (41) are respectively installed at the ends of the plurality of shaft columns 33 to drive the plurality of roller groups (3) to rotate synchronously; An axial pressure sensor (42) is provided at the end of the worm (4), and the axial pressure sensor (42) is used to detect the axial force exerted by the worm wheel (41) on the worm (4), and the tension force of the belt (21) acting on the two guide rollers (31) is converted into the rotational force of the roller group (3) and transmitted to the worm wheel (41); Among them, the worm gear (4) is connected to the shaft of the driving motor of the worm gear (4) through the axial pressure sensor (42), and the driving motor controls the worm gear (4) according to the comparison result between the detected value of the axial pressure sensor (42) and the preset threshold value.

4. The roll-rotating retractable conveyor belt according to claim 3, characterized in that, Two first diameter-expanding rollers (34) are arranged on the turntable (32). The two first diameter-expanding rollers (34) are respectively arranged on one side of the guiding roller (31) facing the reverse rotation direction of the turntable (32), and the distance between the first diameter-expanding roller (34) and the axis of the turntable (32) is greater than or equal to the distance between the guiding roller (31) and the axis of the turntable (32). When the guiding roller (31) winds the belt (21) by the rotation of the turntable (32), the first diameter-expanding roller (34) expands the belt (21) outward to expand the rotatable angle of the turntable (32); Two second diameter-expanding rollers (35) are arranged on the turntable (32). The two second diameter-expanding rollers (35) are respectively arranged on one side of the guiding roller (31) facing the rotation direction of the turntable (32), and the distance between the second diameter-expanding roller (35) and the axis of the turntable (32) is greater than or equal to the distance between the guiding roller (31) and the axis of the turntable (32). When the guiding roller (31) winds the belt (21) by the rotation of the turntable (32), the second diameter-expanding roller (35) expands the belt (21) outward for the second time to expand the rotatable angle of the turntable (32); Among them, the winding length of the belt (21) is positively correlated with the rotatable angle of the turntable (32).

5. The roll-rotating retractable conveyor belt according to any one of claims 1-4, characterized in that, The cylinder body ends of the two telescopic cylinders (11) are respectively rotatably installed on both sides of the frame (1), and the shaft end of the driving roller (2) is installed at the cylinder rod ends of the two telescopic cylinders (11) on the same side, so as to be rotated and / or telescopically adjusted in position by the telescopic cylinders (11).

6. The roll-rotating retractable conveyor belt according to claim 5, characterized in that, Two double-headed cylinders (12) are symmetrically arranged on the frame (1). The two cylinder rod ends of the double-headed cylinder (12) are respectively rotatably installed on the two telescopic cylinders (11) at different ends on the same side of the frame (1). The double-headed cylinder (12) is used to extend and push the two telescopic cylinders (11) away from each other, or shorten and pull the two telescopic cylinders (11) closer to each other to synchronously adjust the angles of the two telescopic cylinders (11); Among them, the middle part of the cylinder body of the double-headed cylinder (12) is arranged on the frame (1) to limit the horizontal movement of the cylinder body of the double-headed cylinder (12).

7. The roll-rotating retractable conveyor belt according to claim 6, characterized in that, A connecting rod (13) is arranged at the cylinder body end of the telescopic cylinder (11). The connecting rod (13) is installed at a fixed angle with the telescopic cylinder (11) and extends downward. The two cylinder rod ends of the double-headed cylinder (12) are movably installed on the two connecting rods (13) on the same side.

8. The roll-rotating retractable conveyor belt according to claim 7, characterized in that, A channel (131) is penetrated through the connecting rod (13). Two sliders (132) are symmetrically and slidably installed on the inner wall of the channel (131), and the cylinder rod end of the double-headed cylinder (12) is rotatably installed between the two sliders (132).

9. The roll-rotating retractable conveyor belt according to claim 8, characterized in that, The double-headed cylinder (12) includes two cylinder barrels (121), the two cylinder barrels (121) are fixed to each other, a piston cylinder rod (122) is installed in each cylinder barrel (121), and the orientations of the two piston cylinder rods (122) are opposite; An eccentric plate (123) is provided at the end of the piston cylinder rod (122) outside the cylinder barrel (121), an assembly plate (124) is installed on the eccentric plate (123), the assembly plate (124) is rotatably installed between the two sliders (132), and the two cylinder barrels (121) are symmetrically distributed on both sides of the assembly plate (124); Among them, the two piston cylinder rods (122) work independently.

10. The roll-rotating retractable conveyor belt according to claim 1, characterized in that, Connection frames (22) are provided at both ends of each driving roller (2), the connection frames (22) are of a concave structure and face the inner side of the driving roller (2), and a scissor expansion frame (23) is jointly provided between the two connection frames (22); Among them, a plurality of auxiliary rollers (24) are provided on the scissor expansion frame (23), and the plurality of auxiliary rollers (24) are used to support the belt (21) between the two driving rollers (2); Support rods (231) are provided on each pin shaft of the scissor expansion frame (23), roller brackets (232) are provided on each support rod (231), and the auxiliary rollers (24) are rotatably installed on the roller brackets (232), and the auxiliary rollers (24) abut against the bottom surface of the belt (21) between the two driving rollers (2).

Images