Lifting adjustable conveying belt

Abstract

The invention discloses a lifting adjustable conveying belt which comprises a rack, two telescopic cylinders are rotationally installed at the two ends of the rack respectively, driving rollers are 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, two rows of guiding rollers which are staggered up and down are arranged below the conveying face, and the guiding rollers on the upper row are fixedly arranged. The lower row of guide rollers can move relative to the upper row of guide rollers, the return section of the belt sequentially and alternately penetrates through the two rows of guide rollers in an S-shaped path, and the guide rollers move in a self-adaptive mode when the driving roller is adjusted through the telescopic cylinder. The multiple guide rollers are arranged in the two rows in the staggered mode to form the storage area used for storing the belt, the containing capacity of the belt is increased, the adjusting range is increased, the distance between the two rows of guide rollers is adjustable, the belt is collected and released, the position adjustment of the two driving rollers is self-adapted, and the conveying efficiency is improved. 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 specifically relates to a lift-adjustable conveyor belt, mainly related to the aspects of belt winding and unwinding during the adjustment of the conveyor path of the conveyor belt. 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. Thus, when the production line needs to increase efficiency and production and is adjusted, it is more convenient to reorganize the production line, or based on the requirements of different material handling, the conveying height is 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 sleeved 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, so as 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, and it is difficult to achieve a large range of length dimension adjustment. In addition, due to the difficulty of forming a two-way adjustment and 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 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. Summary of the Invention

[0005] The purpose of the present invention is to provide a lift-adjustable conveyor belt, specifically providing a conveyor belt that adjusts the belt winding and unwinding by changing the roller group spacing through the lifting of a double-row roller group, 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 lift-adjustable conveyor belt, comprising: A frame; A driving roller, one driving roller is arranged at each end of the frame, and a belt is arranged between the two driving rollers to form a conveying surface; A telescopic cylinder, with one telescopic cylinder provided at each shaft end of the driving roller, and the other end of the telescopic cylinder being rotatably installed at the end of the frame. The telescopic cylinders located at both ends of the frame adjust the relative position between the two driving rollers by telescoping and rotating; A longitudinal transmission mechanism is provided at the bottom of the conveyor belt. The longitudinal transmission mechanism has two rows of guide rollers arranged in a staggered up-and-down manner. The guide rollers in the upper row are fixedly arranged, and the guide rollers in the lower row can move up and down relative to the guide rollers in the upper row. The return section of the belt sequentially passes through each of the guide rollers in the two rows in an S-shaped path to increase the total length of the belt; The synchronous movement of the driving roller and the guide roller can adjust the height and the conveying path length of the belt between the two driving rollers.

[0007] As a preferred solution of the present invention, the longitudinal transmission mechanism includes a fixed bracket and a movable seat. The fixed bracket is fixedly arranged on the frame. A linear cylinder is connected between the movable seat and the fixed bracket. The two rows of guide rollers are respectively installed on the fixed bracket and the movable seat, and are installed in a staggered up-and-down manner. The guide rollers on the movable seat move with the movable seat; By controlling the telescoping of the telescopic cylinder and adjusting the rotation of the telescopic cylinder, the position of the driving roller is changed. At the same time, the operation of the linear cylinder is controlled to release or contract the belt so that the conveyor belt remains in a tensioned state.

[0008] As a preferred solution of the present invention, the fixed bracket includes two parallel fixed longitudinal beams. A plurality of fixed cross beams arranged in an equidistant array are provided between the two fixed longitudinal beams. The upper end of the linear cylinder is fixed outside the fixed longitudinal beam and installed on the frame; A plurality of shaft seats are provided at the bottom of the fixed longitudinal beam. The shaft seats are respectively located between two adjacent fixed cross beams. The two ends of the guide roller are rotatably installed on two opposite shaft seats. A space for accommodating the guide roller in the lower row is provided between two adjacent shaft seats.

[0009] As a preferred solution of the present invention, the movable seat includes two parallel movable longitudinal beams. A plurality of guide rollers in the lower row are installed between the two movable longitudinal beams in an equidistant array, and the number of the guide rollers in the lower row is one more than the number of the guide rollers in the upper row; The cylinder slider of the linear cylinder is connected and installed on the outer side wall of the movable longitudinal beam. A plurality of slots are provided on the inner wall of the movable longitudinal beam, and the slots correspond to the shaft seats one by one.

[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 ends of the driving rollers are installed at the rod ends of the two telescopic cylinders on the same side, so as to be rotated and / or telescopically adjusted in position by the telescopic cylinders.

[0011] As a preferred embodiment of the present invention, two double-headed cylinders are symmetrically arranged on the frame. The two 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 closer to each other, so as 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 arranged 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 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 penetrated through the connecting rod. Two sliders are symmetrically and slidably installed on the inner wall of the channel, and the 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 two piston cylinder rods face in opposite directions; An eccentric plate is arranged at the end of the piston cylinder rod outside the cylinder barrel. An assembly plate is installed on the eccentric plate. The assembly plate is rotatably installed between the two sliders, and the two cylinder barrels are symmetrically distributed on both sides of the assembly plate; Wherein, the two piston cylinder rods work independently.

[0015] As a preferred embodiment of the present invention, connecting frames are arranged 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-type telescopic frame is jointly arranged between the two connecting frames; Wherein, a plurality of auxiliary rollers are arranged on the scissor-type telescopic frame. The plurality of auxiliary rollers are used to support the belt between the two driving rollers; Support rods are arranged on each pin shaft of the scissor-type telescopic frame. A roller frame is arranged on each support rod, and the auxiliary roller is rotatably installed on the roller frame, and the auxiliary roller abuts against the bottom surface of the belt between the two driving rollers.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, a plurality of guide rollers are arranged in two staggered rows to form a storage area for storing the belt, so as to increase the accommodation capacity of the belt and achieve an increase in the adjustment range. Moreover, the distance between the two rows of guide rollers is adjustable to realize the winding and unwinding of the belt, so as to adapt to the position adjustment of the two driving rollers, and the belt size can be adjusted for winding and unwinding based on the position adjustment of the driving rollers.

[0017] And because the belt interweaves back and forth between a plurality of guide rollers, a large belt storage capacity can be obtained in a small space, and the two driving rollers are respectively arranged on the telescopic cylinders on both sides of the frame, so as to achieve symmetrical adjustment and still have high stability after the length dimension is adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 be obtained according to the provided drawings.

[0019] Figure 1 It is a schematic structural diagram of a lift-adjustable conveyor belt provided by an embodiment of the present invention; Figure 2 It is a partial structural schematic diagram of a fixed bracket and a movable seat of a lift-adjustable conveyor belt provided by an embodiment of the present invention; Figure 3 It is a schematic diagram of the distribution of guide rollers of a lift-adjustable conveyor belt provided by an embodiment of the present invention; Figure 4 It is a partial structural schematic diagram of a scissor telescopic frame of a lift-adjustable conveyor belt provided by an embodiment of the present invention; Figure 5 It is a partial structural schematic diagram of a double-headed cylinder of a lift-adjustable conveyor belt provided by an embodiment of the present invention.

[0020] The reference numerals in the drawings are respectively represented as follows: 1 - Frame; 2 - Driving roller; 3 - Guide roller; 4 - Fixed bracket; 5 - Movable seat; 6 - Linear cylinder; 11 - Telescopic cylinder; 12 - Double-headed cylinder; 13 - Connecting rod; 21 - Belt; 22 - Connecting frame; 23 - Scissor telescopic frame; 24 - Auxiliary roller; 41 - Fixed longitudinal beam; 42 - Fixed cross beam; 51 - Movable longitudinal beam; 121 - Cylinder barrel; 122 - Piston cylinder rod; 123 - Eccentric plate; 124 - Assembly plate; 131 - Channel; 132 - Slide block; 231 - Support rod; 232 - Roller frame; 411 - Axle seat; 511 - Slot. Detailed implementation manners

[0021] 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.

[0022] As Figure 1 shown, the present invention provides a lift-adjustable conveyor belt, including: 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; Telescopic cylinders 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.

[0023] Specifically: When the two telescopic cylinders 11 rotate upward, the two drive rollers 2 rise, causing the conveying path (i.e., the conveying surface) of the belt 21 to rise, and the distance between the two drive rollers 2 decreases, shortening the conveying path. And during this process, if the telescopic cylinder 11 extends, the distance between the two drive rollers 2 remains unchanged or increases, while raising the conveying path, maintaining the length of the conveying path or increasing the length of the conveying path. Or during this process, if the telescopic cylinder 11 shortens, the distance between the two drive rollers 2 decreases, while raising the conveying path, further shortening the conveying path.

[0024] When the two telescopic cylinders 11 rotate downward, the two drive rollers 2 descend, causing the conveying path of the belt 21 to descend, and the distance between the two drive rollers 2 increases, elongating the conveying path. And during this process, if the telescopic cylinder 11 shortens, the distance between the two drive rollers 2 remains unchanged or decreases, while lowering the conveying path, maintaining the length of the conveying path or shortening the length of the conveying path. Or during this process, if the telescopic cylinder 11 extends, the distance between the two drive rollers 2 increases, while lowering the conveying path, further elongating the conveying path.

[0025] Among them, it further includes a longitudinal transmission mechanism, which is arranged at the bottom of the conveyor belt. The longitudinal transmission mechanism has two rows of guide rollers 3 arranged in a staggered up-and-down manner. The upper row of guide rollers 3 is fixedly arranged, and the lower row of guide rollers 3 can move up and down relative to the upper row of guide rollers 3. The return section of the belt 21 sequentially passes through each guide roller 3 of the two rows in an S-shaped path to increase the total length of the belt 21; The synchronous movement of the driving roller 2 and the guiding roller 3 can adjust the height of the belt 21 between the two driving rollers 2 and the length of the conveying path.

[0026] Specifically: The return section of the belt 21 first passes through the first guiding roller 3 in the lower row, then passes upward through the first guiding roller 3 in the upper row, and then passes downward through the second guiding roller 3 in the lower row, and is installed in a vertically alternating S-shaped path in sequence to store a longer belt 21 between the two rows of guiding rollers 3.

[0027] When adjusting the length and height of the conveying path, the guiding roller 3 in the lower row is preferentially unlocked. Then, when the position of the driving roller 2 is adjusted by the telescopic cylinder 11, the distance between the driving roller 2 and the longitudinal transmission mechanism increases or decreases. When the distance between the driving roller 2 and the longitudinal transmission mechanism increases, the guiding roller 3 in the lower row rises to release the belt 21, and when the distance between the driving roller 2 and the longitudinal transmission mechanism decreases, the guiding roller 3 in the lower row descends to contract the belt 21 to always keep the belt 21 taut.

[0028] The present invention aims to form a storage area for storing the belt 21 by arranging multiple guiding rollers 3 in two staggered rows, so as to increase the accommodation capacity of the belt 21 and achieve an increase in the adjustment range. And the distance between the two rows of guiding rollers 3 is adjustable to realize the retraction and release of the belt 21, so as to adapt to the position adjustment of the driving roller 2 and realize that the size of the belt 21 can be adjusted for retraction and release based on the position adjustment of the driving roller 2.

[0029] Compared with the existing telescopic belt conveyor with a sleeve plate, the adjustable belt conveyor of the present invention can arrange multiple guiding rollers 3 in two staggered rows, so as to occupy a smaller space below the two driving rollers 2 to provide the ability to store a longer belt 21. When the distance between the two driving rollers 2 is adjusted by the telescopic cylinder 11 and changes, the guiding roller 3 in the lower row can move synchronously, so as to release or store the belt 21 to adapt to the situation where the distance between the two driving rollers 2 increases due to position adjustment.

[0030] 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 structural 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.

[0031] The guiding roller 3 in the lower row can be locked and unlocked on the frame 1, so as to be unlocked first during adjustment and locked after adjustment to maintain the tension of the belt 21. Based on this, in order to operate more conveniently, the following preferred embodiments are provided.

[0032] Such as Figure 1 、 Figure 2 、Figure 3 As shown, the longitudinal transmission mechanism includes a fixed bracket 4 and a movable seat 5. The fixed bracket 4 is fixedly arranged on the frame 1. The movable seat 5 is connected to the fixed bracket 4 by a linear cylinder 6. Two rows of guide rollers 3 are respectively installed on the fixed bracket 4 and the movable seat 5, and are installed in a vertically staggered manner. The guide roller 3 on the movable seat 5 moves with the movable seat 5. By controlling the extension and retraction of the telescopic cylinder 11 and adjusting the rotation of the telescopic cylinder 11, the position of the driving roller 2 is changed. At the same time, the action of the linear cylinder 6 is controlled to release or contract the belt 21, so that the conveyor belt is kept in a tensioned state.

[0033] In this embodiment, the movement of the multiple guide rollers 3 in the lower row is synchronously controlled by the movable seat 5, and the movable seat 5 is locked and unlocked by the linear cylinder 6. That is, when the linear cylinder 6 is unlocked, the movable seat 5 can freely move on the linear cylinder 5 through the cylinder slider, and when the linear cylinder 6 is locked, the movable seat 5 cannot move.

[0034] Based on the above embodiment, the following provides a preferred embodiment of the fixed bracket 4.

[0035] As Figure 2 、 Figure 3 shown, the fixed bracket 4 includes two parallel fixed longitudinal beams 41. Between the two fixed longitudinal beams 41, a plurality of fixed cross beams 42 arranged in an equidistant array are provided. The upper end of the linear cylinder 6 is fixed outside the fixed longitudinal beam 41 and installed on the frame 1. A plurality of shaft seats 411 are provided at the bottom of the fixed longitudinal beam 41. The shaft seats 411 are respectively located between two adjacent fixed cross beams 42. The two ends of the guide roller 3 are rotatably installed on two opposite shaft seats 411. A space for accommodating the guide roller 3 in the lower row is provided between two adjacent shaft seats 411.

[0036] In this embodiment, the fixed bracket 4 is composed of the fixed longitudinal beam 41 and the fixed cross beam 42 to form a frame structure. Shaft seats 411 are provided at the bottom of the fixed longitudinal beam 41, so that the guide roller 3 in the upper row can be installed on the shaft seats 411, thus being far away from the fixed longitudinal beam 41. A space for accommodating the guide roller 3 in the lower row is reserved between two adjacent shaft seats 411. After the movable seat 5 moves to the uppermost position, the guide rollers 3 in the upper and lower rows can be misaligned, so that the belt 21 between them can be flattened and completely released, effectively improving the adjustable range.

[0037] Of course, the movable seat 5 needs to match the fixed bracket 4 so that the guide rollers 3 in the upper and lower rows can release the belt 21 to the greatest extent. Based on this, the following preferred embodiment is provided.

[0038] As Figure 2 、 Figure 3As shown in the figure, the movable seat 5 includes two longitudinally moving beams 51 arranged in parallel. A plurality of lower row guiding rollers 3 are installed between the two longitudinally moving beams 51 in an equidistant array, and the number of the lower row guiding rollers 3 is one more than that of the upper row guiding rollers 3. The cylinder slider of the linear cylinder 6 is connected and installed on the outer side wall of the longitudinally moving beam 51. A plurality of slots 511 are provided on the inner wall of the longitudinally moving beam 51, and the slots 511 correspond to the shaft seats 411 one by one.

[0039] In this embodiment, the movable seat 5 is composed of two longitudinally moving beams 51. The two longitudinally moving beams 51 are connected by a plurality of guiding rollers 3 to form a frame structure. In order to enable the lower row guiding rollers 3 to move upward to form a staggered movement with the upper row guiding rollers, slots 511 corresponding to the shaft seats 411 are provided on the longitudinally moving beam 51, and the shaft seats 411 can be inserted into the slots 511 to ensure that the longitudinally moving beam 51 continues to carry the lower row guiding rollers 3 to move above the upper row guiding rollers 3, so that the belt 21 can be completely released and flattened.

[0040] Based on the above embodiment, when adjusting the height and / or spacing of the two driving rollers 2, the telescopic cylinder 11 needs to be telescoped and / or rotated. Based on this, the following provides a preferred embodiment of the telescopic cylinder 11.

[0041] As Figure 1 shown in the figure, the cylinder body 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 rollers 2 are installed at the cylinder rod ends of the two telescopic cylinders 11 on the same side to be rotated and / or telescoped by the telescopic cylinder 11 to adjust the position.

[0042] In this embodiment, the telescopic cylinder 11 is composed of two telescopic cylinders 11, and the cylinder body ends of the telescopic cylinders 11 are rotatably installed on the frame 1. Then, when the two telescopic cylinders 11 rotate and telescope, the driving rollers 2 can be lifted and / or translated, so as to realize the height adjustment and spacing adjustment of the two driving rollers 2, that is, adjust the height dimension and length dimension of the belt 21.

[0043] Of course, the rotational adjustment of the telescopic cylinder 11 requires a driving source. Based on this, the following preferred embodiment is provided.

[0044] As Figure 1 shown in the figure, 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 the same side and different ends 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; wherein, 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.

[0045] In this embodiment, a double-headed cylinder 12 is used to synchronously drive two telescopic cylinders 11. That is, when the cylinder rod of the double-headed cylinder 12 expands and contracts, the telescopic cylinders 11 on both sides are pushed and pulled, thereby adjusting the angle of the telescopic cylinders 11, that is, rotating the telescopic cylinders 11 to change the height of the driving roller 2; Wherein, the end of the cylinder rod 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; Alternatively, the end of the cylinder rod of the double-headed cylinder 12 is rotatably installed on the telescopic cylinder 11, and the end of the cylinder rod 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 end of the cylinder rod of the double-headed cylinder 12 can rotate and slide on the telescopic cylinder 11.

[0046] Based on the above embodiment, the connection manner 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 ends of the cylinder rod of the double-headed cylinder 12 are movably installed on two connecting rods 13 on the same side.

[0047] 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.

[0048] In addition, as Figure 5 shown, a channel 131 is provided through the connecting rod 13. 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.

[0049] 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 to stably arrange the pressure pipeline of the double-headed cylinder 12.

[0050] In the above embodiment, the double-headed cylinder 12 is a conventional coaxial double-headed cylinder 12, which can realize synchronous drive and rotate the telescopic cylinder 21. However, since the conventional double-headed cylinder 12 is usually synchronously driven, it is impossible to independently drive the telescopic cylinder 21 on one side to rotate. And due to the fixed length, 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 21, that is, the adjustment range is small. Based on this, the following preferred embodiments are provided.

[0051] As shown Figure 5 in FIG. Figure 5 , the double-headed cylinder 12 includes two cylinder barrels 121 which 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 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.

[0052] In this embodiment, the double-headed cylinder 12 is arranged with two cylinder barrels 121 side by side, and its piston cylinder rods 122 are oriented in opposite directions, so as to obtain a larger stroke distance. Moreover, the two cylinder barrels 121 can be independently connected to the pressure pipelines to achieve independent drive, that is, the situation where the two telescopic cylinders 11 have different rotation angles can be realized, so as to adjust 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.

[0053] 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 collapse. Therefore, in order to ensure that the belt 21 has sufficient supporting force after being lengthened, the following preferred embodiment is provided.

[0054] As shown Figure 1 in FIGS. Figure 1 Figure 4 and Figure 4 , connection frames 22 are provided at both ends of each driving roller 2. The connection frames 22 are in a concave structure and face the inside of the driving roller 2. A scissor telescopic frame 23 is jointly provided between the two connection frames 22; Among them, a plurality of auxiliary rollers 24 are provided on the scissor telescopic 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 telescopic frame 23. A roller frame 232 is provided on each support rod 231, and the auxiliary roller 24 is rotatably installed on the roller frame 232, and the auxiliary roller 24 abuts against the bottom surface of the belt 21 located between the two driving rollers 2.

[0055] In this embodiment, by providing a telescopic scissor telescopic frame 23 between the two driving rollers 2, it can be telescoped following the change of the distance between the two driving rollers 2. Moreover, support rods 231 are provided on each pin shaft of the scissor telescopic frame 23, and a roller frame 232 is provided on the support rod 231. Then, the auxiliary roller 24 can be installed through the support rod 231 and the roller frame 232, so as to realize the support of the belt 21; Moreover, since the auxiliary roller 24 is arranged on the structure composed of the support rod 231 and the roller frame 232, and the support rod 231 is installed on the middle pin shaft of the scissor expansion frame 23, when the scissor expansion frame 23 expands and contracts, the auxiliary roller 24 moves 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 evenly support the belt 21.

[0056] 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. An elevating and adjustable 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; Telescopic cylinders (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 mounted 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; A longitudinal transmission mechanism is provided at the bottom of the conveyor belt. The longitudinal transmission mechanism has two rows of guide rollers (3) arranged in a vertically staggered manner. The guide rollers (3) in the upper row are fixedly provided, and the guide rollers (3) in the lower row can move up and down relative to the guide rollers (3) in the upper row. The return section of the belt (21) sequentially passes through each guide roller (3) in the two rows in an S-shaped path to increase the total length of the belt (21); The synchronous movement of the drive rollers (2) and the guide rollers (3) can adjust the height and the conveying path length of the belt (21) between the two drive rollers (2).

2. The elevating and adjustable conveyor belt according to claim 1, characterized in that, The longitudinal transmission mechanism includes a fixed bracket (4) and a movable seat (5). The fixed bracket (4) is fixedly provided on the frame (1). The movable seat (5) is connected to the fixed bracket (4) by a linear cylinder (6). The two rows of guide rollers (3) are respectively mounted on the fixed bracket (4) and the movable seat (5), and are mounted in a vertically staggered manner. The guide rollers (3) on the movable seat (5) move with the movable seat (5); By controlling the telescoping of the telescopic cylinder (11) and adjusting the rotation of the telescopic cylinder (11), the position of the drive roller (2) is changed, and at the same time, the operation of the linear cylinder (6) is controlled to release or contract the belt (21) so that the conveyor belt remains in a tensioned state.

3. The elevating and adjustable conveyor belt according to claim 2, characterized in that, The fixed bracket (4) includes two parallel fixed longitudinal beams (41). A plurality of fixed cross beams (42) arranged in an equidistant array are provided between the two fixed longitudinal beams (41), and the upper end of the linear cylinder (6) is fixed outside the fixed longitudinal beam (41) and mounted on the frame (1); A plurality of shaft seats (411) are provided at the bottom of the fixed longitudinal beam (41). The shaft seats (411) are respectively located between two adjacent fixed cross beams (42), and the two ends of the guide roller (3) are rotatably mounted on two opposite shaft seats (411). A space for accommodating the guide roller (3) in the lower row is provided between two adjacent shaft seats (411).

4. The elevating and adjustable conveyor belt according to claim 3, characterized in that, The movable seat (5) includes two parallel movable longitudinal beams (51). A plurality of guide rollers (3) in the lower row are arranged in an equidistant array and mounted between the two movable longitudinal beams (51), and the number of guide rollers (3) in the lower row is one more than the number of guide rollers (3) in the upper row; The cylinder slider of the linear cylinder (6) is connected and installed to the outer side wall of the moving longitudinal beam (51), and a plurality of slots (511) are provided on the inner wall of the moving longitudinal beam (51), and the slots (511) correspond to the shaft seats (411) one by one.

5. The elevating and adjustable 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 elevating and adjustable conveyor belt according to claim 5, characterized in that, Two double-headed cylinders (12) are symmetrically arranged on the frame (1), and the two cylinder rod ends of the double-headed cylinder (12) are respectively rotatably installed on the two telescopic cylinders (11) at the same side and different ends 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, so as to synchronously adjust the angles of the two telescopic cylinders (11); Wherein, 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 elevating and adjustable conveyor belt according to claim 6, characterized in that, A connecting rod (13) is provided at the cylinder body end of the telescopic cylinder (11), and 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 elevating and adjustable conveyor belt according to claim 7, characterized in that, A slot (131) is provided through the connecting rod (13), and two sliders (132) are symmetrically and slidably installed on the inner wall of the slot (131), and the cylinder rod end of the double-headed cylinder (12) is rotatably installed between the two sliders (132).

9. The elevating and adjustable 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); Wherein, the two piston cylinder rods (122) work independently.

10. The elevating and adjustable 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 in 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); Wherein, 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 frames (232) are provided on each of the support rods (231), the auxiliary rollers (24) are rotatably mounted on the roller frames (232), and the auxiliary rollers (24) abut against the bottom surface of the belt (21) located between the two driving rollers (2).

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