A lifting and adjustable conveyor belt

Abstract

The present invention discloses a lifting and adjustable conveyor belt, comprising a frame, two telescopic cylinders rotatably mounted at both ends of the frame, a driving roller mounted between the two telescopic cylinders on the same end side, a belt disposed between the two driving rollers to form a conveying surface, and two rows of guide rollers staggered in an upper and lower direction disposed below the conveying surface, the guide rollers in the upper row being fixed, the guide rollers in the lower row being movable relative to the guide rollers in the upper row, and the return section of the belt alternately passing through each guide roller in the two rows in an S-shaped path, the guide rollers adaptively moving when the driving rollers are adjusted by the telescopic cylinders. The present invention forms a storage area for storing the belt by staggering a plurality of guide rollers in two rows to increase the belt's capacity and thereby increase the adjustment range. The belt can be retracted and extended by adjusting the spacing between the two rows of guide rollers, and the position of the two driving rollers can be adjusted adaptively to achieve the belt size being adjustable and retractable based on the position of the driving rollers.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyor belts, in particular to a lifting and adjusting conveyor belt, and mainly to the aspect of belt retraction and extension during the conveying path adjustment process of the conveyor belt. Background Art

[0002] Adjustable conveying systems are usually composed of multiple adjustable conveyor belts. The conveying length of the adjustable conveyor belts can be adjusted according to demand, so that when the production line needs to be adjusted to increase efficiency and output, it can be more convenient to reorganize the production line, or based on the requirements of different material handling, the conveying height can be adjusted to switch the material conveying destination equipment, such as low-temperature furnace area, high-temperature furnace area, etc.

[0003] At present, adjustable conveyor belts usually adopt sleeve telescopic conveyor belts, that is, multiple conveyor belts of different specifications are combined in a sleeve manner, so as to form a combined stepped structure conveyor belt after extension, so as to adjust the conveying length and size. The largest size conveyor belt is supported by a base and can adjust the tilt angle to adjust the conveying angle. Although this sleeve telescopic conveyor belt can adjust the conveying length and size, the sleeve telescopic structure usually performs multiple sections of telescopic on the same side. During the telescopic process, the longer the length is extended, the more unstable its end is due to the leverage effect. Therefore, for stable use, the sleeve telescopic conveyor belt is usually two or three sections. Its length adjustment range is limited, and it is difficult to achieve a wide range of length adjustment. In addition, due to the unilateral adjustment, it is difficult to form a two-way adjustment docking in the line, making it difficult to form an adjustable conveying system.

[0004] Therefore, the existing single-side adjustable telescopic conveyor belt is difficult to achieve a wide range of length adjustment due to the limited stability of the single-side adjustment, and it is difficult to adjust in both directions, making it difficult to achieve multi-conveyor belt joint adjustment in the production line to change the route of the conveying system. Summary of the Invention

[0005] The purpose of the present invention is to provide a lifting and adjustable conveyor belt, specifically to provide a conveyor belt that adjusts the belt retraction and extension by lifting and lowering a double-row roller group to change the roller group spacing, 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 unilateral adjustment, and it is difficult to adjust in both directions, making it difficult to achieve multi-conveyor belt coordination in the production line to change the route of the conveying system.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A lifting and adjustable conveyor belt, comprising:

[0008] frame;

[0009] Active rollers, one of which is provided at each end of the frame, and a belt is provided between the two active rollers to form a conveying surface;

[0010] A telescopic cylinder is provided at each shaft end of the active roller, and the other end of the telescopic cylinder is rotatably mounted on the end of the frame. The telescopic cylinders at both ends of the frame adjust the relative position between the two active rollers by telescoping and rotating;

[0011] a longitudinal transmission mechanism disposed below the conveying surface of the belt, the longitudinal transmission mechanism comprising two rows of guide rollers arranged alternately in an upper and lower manner, the guide rollers in the upper row being fixed, and the guide rollers in the lower row being movable up and down relative to the guide rollers in the upper row, the return section of the belt passing alternately through each of the guide rollers in the two rows in an S-shaped path, thereby increasing the total length of the belt;

[0012] 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.

[0013] 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, the movable seat and the fixed bracket are connected by a linear cylinder, two rows of guide rollers are respectively installed on the fixed bracket and the movable seat, and are installed in an upper and lower staggered manner, and the guide rollers on the movable seat move with the movable seat;

[0014] The position of the active roller is changed by controlling the extension and contraction of the telescopic cylinder and adjusting the rotation of the telescopic cylinder, and the action of the linear cylinder is controlled to release or retract the belt so that the belt remains in a tensioned state.

[0015] As a preferred solution of the present invention, the fixed bracket includes two parallel fixed longitudinal beams, a plurality of fixed transverse beams arranged in an equidistant array are provided between the two fixed longitudinal beams, and the upper end of the linear cylinder is fixed to the outside of the fixed longitudinal beams and mounted on the frame;

[0016] A plurality of axle seats are provided at the bottom of the fixed longitudinal beam, and the axle seats are respectively located between two adjacent fixed transverse beams, and the two ends of the guide roller are rotatably mounted on two opposite axle seats, and space is provided between two adjacent axle seats to accommodate the guide rollers in the lower row.

[0017] As a preferred embodiment of the present invention, the movable seat includes two parallel movable longitudinal beams, and the plurality of guide rollers in the lower row are arranged in an equidistant array and installed between the two movable longitudinal beams, 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;

[0018] The cylinder slider of the linear cylinder is connected and installed with the outer side wall of the moving longitudinal beam, and a plurality of slots are provided on the inner wall of the moving longitudinal beam, and the slots correspond to the shaft seats one by one.

[0019] As a preferred solution of the present invention, the cylinder ends of the two telescopic cylinders are rotatably mounted on both sides of the frame, and the shaft end of the active roller is mounted on the cylinder 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.

[0020] As a preferred solution of the present invention, two double-headed cylinders are symmetrically arranged on the frame, and the ends of the two cylinder rods of the double-headed cylinders are respectively rotatably mounted on the two telescopic cylinders at different ends on the same side of the frame. The double-headed cylinders are used to extend and push the two telescopic cylinders away from each other, or shorten and pull the two telescopic cylinders towards each other, so as to synchronously adjust the angles of the two telescopic cylinders.

[0021] 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.

[0022] As a preferred solution of the present invention, a connecting rod is provided at the end of the cylinder body of the telescopic cylinder. The connecting rod is installed at a fixed angle to 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.

[0023] As a preferred solution of the present invention, a groove is provided through the connecting rod, two sliders are symmetrically slidably installed on the inner wall of the groove, and the cylinder rod end of the double-headed cylinder is rotatably installed between the two sliders.

[0024] As a preferred solution of the present invention, the double-headed cylinder includes two cylinder barrels, the two cylinder barrels are fixed to each other, a piston rod is installed in each cylinder barrel, and the two piston rods are oriented in opposite directions;

[0025] An eccentric plate is provided on the end of the piston cylinder rod located outside the cylinder barrel, and 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 the upper and lower sides of the assembly plate so that the assembly plate is located on the symmetrical midline of the two cylinder barrels;

[0026] Wherein, the two piston cylinder rods work independently.

[0027] As a preferred solution of the present invention, a connecting frame is provided at both ends of each active roller, the connecting frame is concave in shape and faces the inner side of the active roller, and a scissor-type telescopic frame is provided between the two connecting frames;

[0028] Wherein, a plurality of auxiliary rollers are provided on the scissor-type telescopic frame, and the plurality of auxiliary rollers are used to support the belt between the two active rollers;

[0029] A support rod is provided on each pin shaft of the scissor-type telescopic frame, a roller frame is provided on each support rod, and the auxiliary roller is rotatably mounted on the roller frame, and the auxiliary roller abuts against the bottom surface of the belt located between the two active rollers.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention forms a storage area for storing belts by arranging multiple guide rollers in two rows in an staggered manner, so as to increase the belt holding capacity and realize an increase in the adjustment range. The belt can be retracted and extended by adjusting the spacing between the two rows of guide rollers, and the position of the two active rollers can be adjusted adaptively to achieve the belt size being adjustable based on the position of the active roller.

[0032] And because the belt goes back and forth between multiple guide rollers, a larger belt storage capacity can be obtained in a smaller space, and the two active rollers are arranged on the telescopic cylinders on both sides of the frame, thereby achieving symmetrical adjustment, so that it still has high stability after the length size is adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0034] Figure 1 A schematic structural diagram of a lifting and adjustable conveyor belt provided in an embodiment of the present invention;

[0035] Figure 2 A schematic diagram of the structure of the fixed bracket and movable seat of the lifting and adjustable conveyor belt provided in an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of the distribution of guide rollers of a lifting and adjustable conveyor belt provided in an embodiment of the present invention;

[0037] Figure 4 A schematic diagram of the structure of a scissor-type telescopic frame of a lifting and adjustable conveyor belt provided in an embodiment of the present invention;

[0038] Figure 5 A schematic diagram of the structure of the double-head cylinder portion of the lifting and adjustable conveyor belt provided in an embodiment of the present invention.

[0039] The numbers in the figure represent the following:

[0040] 1-frame; 2-driving roller; 3-guide roller; 4-fixed bracket; 5-movable seat; 6-linear cylinder;

[0041] 11- telescopic cylinder; 12- double-head cylinder; 13- connecting rod; 21- belt; 22- connecting frame; 23- scissor-type telescopic frame; 24- auxiliary roller; 41- fixed longitudinal beam; 42- fixed transverse beam; 51- moving longitudinal beam;

[0042] 121-cylinder barrel; 122-piston cylinder rod; 123-eccentric plate; 124-assembly plate; 131-groove; 132-slider; 231-support rod; 232-roller frame; 411-axle seat; 511-slot. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] like Figure 1 As shown, the present invention provides a lifting adjustable conveyor belt, comprising:

[0045] Rack 1;

[0046] Active roller 2: an active roller 2 is provided at each end of the frame 1, and a belt 21 is provided between the two active rollers 2 to form a conveying surface;

[0047] A telescopic cylinder 11 is provided at each axial end of the active roller 2, and the other end of the telescopic cylinder 11 is rotatably mounted on the end of the frame 1. The telescopic cylinders 11 at both ends of the frame 1 adjust the relative position between the two active rollers 2 by telescoping and rotating.

[0048] Specifically:

[0049] When the two telescopic cylinders 11 rotate upward, the two driving rollers 2 rise, raising the conveying path (i.e., the conveying surface) of the belt 21. The distance between the two driving rollers 2 decreases, shortening the conveying path. During this process, if the telescopic cylinders 11 extend, the distance between the two driving rollers 2 remains constant or increases, raising the conveying path while maintaining or increasing its length. Alternatively, if the telescopic cylinders 11 contract, the distance between the two driving rollers 2 decreases, raising the conveying path while further shortening it.

[0050] When the two telescopic cylinders 11 rotate downward, the two driving rollers 2 descend, lowering the conveying path of the belt 21. The distance between the two driving rollers 2 increases, lengthening the conveying path. During this process, if the telescopic cylinders 11 are shortened, the distance between the two driving rollers 2 remains constant or decreases, lowering the conveying path while maintaining or shortening its length. Alternatively, if the telescopic cylinders 11 are extended, the distance between the two driving rollers 2 increases, lowering the conveying path while further lengthening it.

[0051] The belt 21 further includes a longitudinal transmission mechanism disposed below the conveying surface thereof. The longitudinal transmission mechanism comprises two rows of guide rollers 3 arranged alternately in an upper and lower manner. The guide rollers 3 in the upper row are fixed, while 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 alternately passes through each guide roller 3 in the two rows in an S-shaped path to increase the total length of the belt 21.

[0052] The synchronous movement of the driving roller 2 and the guide roller 3 can adjust the height of the belt 21 between the two driving rollers 2 and the length of the conveying path.

[0053] Specifically:

[0054] The return section of the belt 21 first passes through the first guide roller 3 in the lower row, then passes upward through the first guide roller 3 in the upper row, and then passes downward to the second guide roller 3 in the lower row, and is installed in an S-shaped path alternating up and down to store the longer belt 21 between the two rows of guide rollers 3.

[0055] When adjusting the length and height of the conveying path, the lower row of guide rollers 3 are unlocked first. When the active roller 2 is adjusted in position by the telescopic cylinder 11, the distance between the active roller 2 and the longitudinal transmission mechanism increases or decreases. When the distance between the active roller 2 and the longitudinal transmission mechanism increases, the lower row of guide rollers 3 rises to release the belt 21, and when the distance between the active roller 2 and the longitudinal transmission mechanism decreases, the lower row of guide rollers 3 descends to retract the belt 21, so as to always keep the belt 21 taut.

[0056] The present invention aims to form a storage area for storing the belt 21 by arranging multiple guide rollers 3 in two rows in an staggered manner, so as to increase the capacity of the belt 21 and realize an increase in the adjustment range, and realize the retraction and extension of the belt 21 by adjusting the spacing between the two rows of guide rollers 3, and realize the position adjustment of the adaptive active roller 2, so that the size of the belt 21 can be adjusted and retracted based on the position adjustment of the active roller 2.

[0057] Compared with the existing sleeve telescopic conveyor belt, the adjustable conveyor belt of the present invention can provide the ability to store longer belts 21 by arranging multiple guide rollers 3 in two rows in an staggered manner, thereby occupying a smaller space under the two active rollers 2. When the two active rollers 2 are adjusted in position by the telescopic cylinder 11 and the spacing is changed, the guide rollers 3 in the lower row can follow and move synchronously, thereby releasing or storing the belts 21 to adapt to the situation where the distance between the two active rollers 2 increases due to position adjustment.

[0058] The active roller 2 is driven by a motor and a transmission box assembly mounted on a telescopic cylinder 11. Since this is a conventional structural part of the conveyor belt, it is not shown in the figure and will not be described in detail. Of course, the two active rollers 2 can also be configured as one active roller and one driven roller, depending on the load requirements.

[0059] The guide rollers 3 in the lower row can be locked and unlocked on the frame 1, thereby first unlocking during adjustment and locking after adjustment to maintain the tension of the belt 21. Based on this, for more convenient operation, the following preferred embodiments are provided.

[0060] like 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 through 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 an upper and lower staggered manner. The guide rollers 3 on the movable seat 5 move with the movable seat 5.

[0061] The position of the active roller 2 is changed by controlling the extension and contraction of the telescopic cylinder 11 and adjusting the rotation of the telescopic cylinder 11 , and the action of the linear cylinder 6 is controlled to release or retract the belt 21 so that the belt 21 remains in a tensioned state.

[0062] In this embodiment, the movement of multiple guide rollers 3 in the lower row is synchronously controlled by the movable seat 5, and the movable seat 5 is self-locked and unlocked by the linear cylinder 6, that is, when the linear cylinder 6 is unlocked, the movable seat 5 can move freely on the linear cylinder 5 through the cylinder slider, and when the linear cylinder 6 is self-locked, the movable seat 5 cannot move.

[0063] Based on the above embodiments, preferred embodiments of the fixing bracket 4 are provided below.

[0064] like Figure 2 、 Figure 3 As shown, the fixed bracket 4 includes two parallel fixed longitudinal beams 41, and a plurality of fixed transverse 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 to the outside of the fixed longitudinal beam 41 and mounted on the frame 1;

[0065] A plurality of axle seats 411 are provided at the bottom of the fixed longitudinal beam 41 , and the axle seats 411 are respectively located between two adjacent fixed transverse beams 42 , and both ends of the guide roller 3 are rotatably mounted on two opposite axle seats 411 , and space is provided between two adjacent axle seats 411 to accommodate the guide roller 3 in the lower row.

[0066] In this embodiment, the fixed bracket 4 is composed of a fixed longitudinal beam 41 and a fixed transverse beam 42 to form a frame structure, and an axle seat 411 is set at the bottom of the fixed longitudinal beam 41, so that the guide rollers 3 in the upper row can be installed on the axle seat 411, thereby away from the fixed longitudinal beam 41, and space for accommodating the guide rollers 3 in the lower row is reserved between two adjacent axle seats 411. After the movable seat 5 moves to the top, the guide rollers 3 in the upper and lower rows can be staggered, so that the belt 21 between them is flattened and completely released, effectively improving the adjustable range.

[0067] Of course, the movable seat 5 needs to match the fixed bracket 4 so that the upper and lower rows of guide rollers 3 can release the belt 21 to the greatest extent. Based on this, the following preferred embodiments are provided.

[0068] like Figure 2 、 Figure 3 As shown, the movable seat 5 includes two parallel movable longitudinal beams 51, and a plurality of guide rollers 3 in the lower row are arranged in an equidistant array and installed 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;

[0069] The cylinder slider of the linear cylinder 6 is connected and installed with the outer wall of the movable longitudinal beam 51 , and a plurality of slots 511 are provided on the inner wall of the movable longitudinal beam 51 , and the slots 511 correspond to the shaft seats 411 one by one.

[0070] In this embodiment, the movable seat 5 is composed of two movable longitudinal beams 51, and the two movable longitudinal beams 51 are connected by multiple guide rollers 3 to form a frame structure. In order to enable the guide rollers 3 in the lower row to move upward to form an offset movement with the guide rollers in the upper row, a groove 511 corresponding to the axle seat 411 is provided on the movable longitudinal beam 51, and the axle seat 411 can be inserted into the groove 511, ensuring that the movable longitudinal beam 51 continues to carry the guide rollers 3 in the lower row to move above the guide rollers 3 in the upper row, so that the belt 21 can be completely released and flattened.

[0071] Based on the above embodiment, when adjusting the height and / or spacing between the two active rollers 2, the telescopic cylinder 11 needs to be extended and / or rotated. Based on this, a preferred embodiment of the telescopic cylinder 11 is provided below.

[0072] like Figure 1As shown, the cylinder ends of the two telescopic cylinders 11 are rotatably mounted on both sides of the frame 1, and the shaft end of the active roller 2 is mounted on 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.

[0073] In this embodiment, the telescopic cylinder 11 is composed of two telescopic cylinders 11, and the cylinder ends of the telescopic cylinders 11 are rotatably mounted on the frame 1. When the two telescopic cylinders 11 rotate and extend, the active roller 2 can be raised and lowered and / or translated, thereby achieving height adjustment and spacing adjustment of the two active rollers 2, that is, adjusting the height and length dimensions of the belt 21.

[0074] Of course, the rotation adjustment of the telescopic cylinder 11 requires a driving source. Based on this, the following preferred embodiments are provided.

[0075] like Figure 1 As shown, two double-headed cylinders 12 are symmetrically arranged on the frame 1. The two cylinder rod ends of the double-headed cylinders 12 are respectively rotatably mounted on the two telescopic cylinders 11 at the opposite ends of the same side of the frame 1. The double-headed cylinders 12 are used to extend and push the two telescopic cylinders 11 away from each other, or shorten and pull the two telescopic cylinders 11 towards each other, so as to synchronously adjust the angles of the two telescopic cylinders 11.

[0076] The middle portion 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 .

[0077] In this embodiment, a double-headed cylinder 12 is used to synchronously drive the two telescopic cylinders 11. That is, when the cylinder rod of the double-headed cylinder 12 is extended and retracted, 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 active drum 2.

[0078] The end of the cylinder rod of the double-headed cylinder 12 is rotatably mounted on the telescopic cylinder 11. At this time, the double-headed cylinder 12 is mounted on the frame 1 and is restricted by the frame 1 so that it can only slide up and down. When the telescopic cylinder 11 rotates, the double-headed cylinder 12 can move up and down with the rotation of the telescopic cylinder 11.

[0079] Alternatively, the cylinder rod end of the double-headed cylinder 12 is rotatably installed on the telescopic cylinder 11, and the cylinder rod end of the double-headed cylinder 12 is slidably set on the telescopic cylinder 11. At this time, the double-headed cylinder 12 is fixed on the frame 1 so that it cannot move. When the telescopic cylinder 11 rotates, the cylinder rod end of the double-headed cylinder 12 can rotate and slide on the telescopic cylinder 11.

[0080] Based on the above embodiment, the connection method of the double-headed cylinder 12 and the telescopic cylinder 11 is as follows: Figure 4 As 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 to 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.

[0081] In this embodiment, the connecting rod 13 is fixed to the cylinder end of the telescopic cylinder 11, and the cylinder end of the telescopic cylinder 11 is rotatably mounted on the frame 1. 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.

[0082] In addition, if Figure 5 As shown, a groove 131 is provided through the connecting rod 13 , and two sliders 132 are symmetrically slidably installed on the inner wall of the groove 131 , and the cylinder rod end of the double-headed cylinder 12 is rotatably installed between the two sliders 132 .

[0083] In this embodiment, by providing a groove 131 on the connecting rod 13, the cylinder rod end of the double-headed cylinder 12 can be slidably installed in the groove 131 through the slider 132, so that the double-headed cylinder 12 can be fixed for use, so that the pressure pipeline of the double-headed cylinder 12 can be stably arranged.

[0084] In the above embodiment, the double-headed cylinder 12 is a conventional coaxial double-headed cylinder 12, which can realize synchronous driving 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. In addition, due to the fixed length, the cylinder rod stroke of the double-headed cylinder 12 is short, and it is difficult to realize a larger angle rotation of the telescopic cylinder 21, that is, the adjustment range is small. Based on this, the following preferred embodiments are provided.

[0085] like Figure 5 As shown, the double-headed cylinder 12 includes two cylinder barrels 121, which are fixed to each other. A piston rod 122 is installed in each cylinder barrel 121, and the two piston rods 122 face opposite directions.

[0086] An eccentric plate 123 is provided on the end of the piston rod 122 outside the cylinder barrel 121. An assembly plate 124 is mounted on the eccentric plate 123. The assembly plate 124 is rotatably mounted between the two sliders 132. The two cylinder barrels 121 are symmetrically distributed on the upper and lower sides of the assembly plate 124 so that the assembly plate 124 is located on the symmetrical midline of the two cylinder barrels 121.

[0087] The two piston cylinder rods 122 work independently.

[0088] In this embodiment, the double-headed cylinder 12 uses two cylinder barrels 121 arranged side by side, and their piston cylinder rods 122 face opposite directions, thereby obtaining a larger stroke distance. In addition, the two cylinder barrels 121 can be independently connected to the pressure pipeline to achieve independent drive. In other words, the two telescopic cylinders 11 can rotate at different angles to achieve height adjustment of the active roller 2, thereby achieving climbing or descending adjustment of the belt 21.

[0089] The eccentric plate 123 and the assembly plate 124 are used to connect the piston cylinder rod 122 and the slider 132 .

[0090] Based on the above embodiment, when the distance between the two active rollers 2 is increased, that is, when the conveying section of the belt 21 is lengthened, the middle part of the conveyor belt 21 is more easily compressed and collapsed. Therefore, in order to ensure that the belt 21 has sufficient supporting force after the length is adjusted, the following preferred embodiment is provided.

[0091] like Figure 1 、 Figure 4 As shown, a connecting frame 22 is provided at both ends of each active roller 2. The connecting frame 22 is concave in shape and faces the inner side of the active roller 2. A scissor-type telescopic frame 23 is provided between the two connecting frames 22.

[0092] A plurality of auxiliary rollers 24 are provided on the scissor-type telescopic frame 23 , and the plurality of auxiliary rollers 24 are used to support the belt 21 between the two active rollers 2 ;

[0093] A support rod 231 is provided on each pin shaft of the scissor-type telescopic frame 23 , and a roller frame 232 is provided on each support rod 231 . The auxiliary roller 24 is rotatably mounted on the roller frame 232 , and the auxiliary roller 24 abuts against the bottom surface of the belt 21 located between the two active rollers 2 .

[0094] In this embodiment, a retractable scissor-type telescopic frame 23 is provided between the two active rollers 2 so that the two active rollers 2 can be extended and retracted in response to changes in the distance between the two active rollers 2. A support rod 231 is provided on each pin of the scissor-type telescopic frame 23, and a roller frame 232 is provided on the support rod 231. The auxiliary roller 24 can be installed through the support rod 231 and the roller frame 232, thereby supporting the belt 21.

[0095] And because 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-type telescopic frame 23, when the scissor-type telescopic frame 23 is extended or retracted, the auxiliary roller 24 follows the movement, that is, when the scissor-type telescopic frame 23 is stretched, the spacing between the auxiliary rollers 24 increases, and when the scissor-type telescopic frame 23 is compressed, the spacing between the auxiliary rollers 24 decreases, so as to evenly support the belt 21.

[0096] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A lifting and adjustable conveyor belt, characterized in that: include: Rack (1); Active rollers (2), one active roller (2) is provided at each end of the frame (1), and a belt (21) is provided between the two active rollers (2) to form a conveying surface; A telescopic cylinder (11), one telescopic cylinder (11) is provided at each axial end of the active roller (2), and the other end of the telescopic cylinder (11) is rotatably mounted on the end of the frame (1). The telescopic cylinders (11) at both ends of the frame (1) adjust the relative position between the two active rollers (2) by telescoping and rotating; A longitudinal transmission mechanism is arranged below the conveying surface of the belt (21), the longitudinal transmission mechanism having two rows of guide rollers (3) arranged in an upper and lower staggered manner, the guide rollers (3) in the upper row are fixedly arranged, and the guide rollers (3) in the lower row can move up and down relative to the guide rollers (3) in the upper row, and the return section of the belt (21) alternately passes through each of the guide rollers (3) in the two rows in an S-shaped path to increase the total length of the belt (21); The synchronous movement of the active roller (2) and the guide roller (3) can adjust the height and conveying path length of the belt (21) between the two active rollers (2); The longitudinal transmission mechanism includes a fixed bracket (4) and a movable seat (5), wherein the fixed bracket (4) is fixedly arranged on the frame (1), and the movable seat (5) is connected to the fixed bracket (4) via 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 an upper and lower staggered manner. The guide rollers (3) on the movable seat (5) move with the movable seat (5); The position of the active roller (2) is changed by controlling the extension and contraction of the telescopic cylinder (11) and adjusting the rotation of the telescopic cylinder (11), and the action of the linear cylinder (6) is controlled to release or retract the belt (21) so that the belt (21) remains in a tensioned state; The fixed bracket (4) includes two parallel fixed longitudinal beams (41), a plurality of fixed transverse 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 to the outside of the fixed longitudinal beams (41) and mounted on the frame (1); A plurality of axle seats (411) are provided at the bottom of the fixed longitudinal beam (41), the axle seats (411) being respectively located between two adjacent fixed transverse beams (42), and the two ends of the guide roller (3) are rotatably mounted on two opposite axle seats (411), and a space for accommodating the guide rollers (3) in the lower row is provided between two adjacent axle seats (411).

2. The lifting and adjustable conveyor belt according to claim 1, characterized in that: The movable seat (5) comprises two parallel movable longitudinal beams (51), and the plurality of guide rollers (3) in the lower row are arranged in an equidistant array and installed between the two movable longitudinal beams (51), and the number of the guide rollers (3) in the lower row is one more than the number of the guide rollers (3) in the upper row; The cylinder slider of the linear cylinder (6) is connected and installed with the outer wall of the movable longitudinal beam (51), and a plurality of slots (511) are provided on the inner wall of the movable longitudinal beam (51), and the slots (511) correspond one-to-one to the shaft seats (411).

3. A lifting and adjustable conveyor belt according to claim 1 or 2, characterized in that: The cylinder ends of the two telescopic cylinders (11) are rotatably mounted on both sides of the frame (1), and the shaft end of the active roller (2) is mounted on 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).

4. The lifting and adjustable conveyor belt according to claim 3, 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 cylinders (12) are respectively rotatably mounted on the two telescopic cylinders (11) at the opposite ends of the same side of the frame (1). The double-headed cylinders (12) are used to extend and push the two telescopic cylinders (11) away from each other, or shorten and pull the two telescopic cylinders (11) toward each other, so as to synchronously adjust the angles of the two telescopic cylinders (11); The middle portion 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).

5. The lifting and adjustable conveyor belt according to claim 4, characterized in that: A connecting rod (13) is provided at the cylinder end of the telescopic cylinder (11), the connecting rod (13) is installed at a fixed angle with the telescopic cylinder (11) and extends downward, and the two cylinder rod ends of the double-headed cylinder (12) are movably installed on the two connecting rods (13) on the same side.

6. The lifting and adjustable conveyor belt according to claim 5, characterized in that: A groove (131) is provided through the connecting rod (13), two sliders (132) are symmetrically and slidably mounted on the inner wall of the groove (131), and the cylinder rod end of the double-headed cylinder (12) is rotatably mounted between the two sliders (132).

7. The lifting and adjustable conveyor belt according to claim 6, characterized in that: The double-headed cylinder (12) comprises 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 two piston cylinder rods (122) face in opposite directions; An eccentric plate (123) is provided on the end of the piston cylinder rod (122) located outside the cylinder barrel (121), and 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 the upper and lower sides of the assembly plate (124), so that the assembly plate (124) is located on the symmetrical midline of the two cylinder barrels (121); The two piston cylinder rods (122) operate independently.

8. The lifting and adjustable conveyor belt according to claim 1, characterized in that: A connecting frame (22) is provided at both ends of each active roller (2), the connecting frame (22) being concave in structure and facing the inner side of the active roller (2), and a scissor-type telescopic frame (23) is provided between the two connecting frames (22); Wherein, a plurality of auxiliary rollers (24) are provided on the scissor-type telescopic frame (23), and the plurality of auxiliary rollers (24) are used to support the belt (21) between the two active rollers (2); A support rod (231) is provided on each pin shaft of the scissor-type telescopic frame (23), a roller frame (232) is provided on each support rod (231), and the auxiliary roller (24) is rotatably mounted on the roller frame (232), and the auxiliary roller (24) abuts against the bottom surface of the belt (21) located between the two active rollers (2).

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