Tensioner, flexible transmission device and carrying equipment

Abstract

The utility model discloses a tensioner, a flexible transmission device and carrying equipment, the tensioner comprises a shell, an elastic piece and a tensioning piece, the shell encloses a containing space, the elastic piece is contained in the containing space, one end of the tensioning piece is contained in the containing space and connected with the elastic piece, the other end of the tensioning piece is used for making contact with a flexible piece, and the tensioning piece is used for rotating to extrude the elastic piece; the elastic tension of the elastic piece is positively correlated with the rotating angle of the tensioning piece, so that when the acting force on the tensioning piece is reduced due to looseness or load change of the flexible piece, the elastic piece automatically releases the elastic tension through elastic deformation and drives the tensioning piece to rotate towards the direction of the flexible piece, and the tensioning piece and the flexible piece tightly abut against each other again. It is guaranteed that the flexible part is always in a tensioning state, the tensioning force of the flexible part is adjusted in real time, and the tensioning force adjusting precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of handling equipment technology, specifically to a tensioner, a flexible transmission device, and a handling equipment. Background Technology

[0002] In material handling equipment employing flexible transmission methods (such as belt conveyors, chain hoists, and rope traction systems), flexible components (such as conveyor belts, chains, and wire ropes) are prone to loosening due to wear, temperature changes, or tensile deformation. This leads to problems such as reduced wrap angle, loosening, accelerated wear, and low transmission efficiency. Therefore, tension control of flexible components is crucial for transmission efficiency, stability, and service life. Current technologies typically use fixed adjustment structures such as manually adjustable tension bolts to regulate the tension of flexible components, which suffers from slow adjustment efficiency and low adjustment accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a tensioner, a flexible transmission device, and a handling equipment to solve the problems of slow tension adjustment efficiency and low preload adjustment accuracy.

[0004] To achieve the objectives of this utility model, the following technical solution is provided:

[0005] In a first aspect, this utility model provides a tensioner, comprising: a housing enclosing a receiving space; an elastic element received within the receiving space; and a tensioning element, one end of which is received within the receiving space and connected to the elastic element, and the other end of which is used to contact a flexible element; wherein the tensioning element is used to rotate to compress the elastic element, and the elastic tension of the elastic element is positively correlated with the rotation angle of the tensioning element.

[0006] In one embodiment, the tensioning member includes a pivot shaft housed in the receiving space, and the elastic member is connected to the outer peripheral surface of the pivot shaft and / or the end face of the pivot shaft.

[0007] In one embodiment, the pivot shaft is rotatably connected to the outer casing.

[0008] In one embodiment, the outer peripheral contour of the pivot shaft and the inner peripheral wall of the housing are both polygonal, and the elastic element is disposed between the outer peripheral surface of the pivot shaft and the inner peripheral wall of the housing.

[0009] In one embodiment, both the outer periphery of the pivot shaft and the inner periphery of the housing are square.

[0010] In one embodiment, the four outer walls of the pivot shaft are arranged opposite to the four inner corners of the outer shell; there are four elastic elements, which are arranged opposite to each other between the four outer walls of the pivot shaft and the four inner corners of the outer shell.

[0011] In one embodiment, the four elastic elements are an integral structure.

[0012] In one embodiment, the tensioning member further includes a connecting arm and a contact structure, one end of the connecting arm being connected to the contact structure and the other end being connected to the pivot shaft, the contact structure being used to contact the flexible member.

[0013] In one embodiment, the contact structure includes a tensioning shaft and a rolling element, the rolling element being used to contact a flexible element; the tensioning shaft is rotatably connected to the connecting arm, and / or the rolling element is rotatably connected to the tensioning shaft.

[0014] In one embodiment, the flexible element is a chain, and the rolling element is a sprocket, which is used to engage with the chain.

[0015] In one embodiment, the orthographic projection of the elastic element and the orthographic projection of the connecting arm at least partially coincide in the axial direction of the pivot shaft.

[0016] In one embodiment, the housing includes a positioning part for positioning the tensioner when it is installed and when the tensioner is inserted into the receiving space.

[0017] In one embodiment, the elastic element is at least one of a helical spring, torsion spring, leaf spring, leaf spring, elastic polymer, and pneumatic component.

[0018] Secondly, the present invention also provides a flexible transmission device, comprising a drive structure, a flexible element, and a tensioner as described in any one of the embodiments of the first aspect, wherein the drive structure is drively connected to the flexible element and is used to drive the flexible element to rotate, and the tensioning element of the tensioner contacts the flexible element to provide tension force.

[0019] In one embodiment, the flexible element is one of a chain, belt, rope, timing belt, or film conveyor belt.

[0020] In one embodiment, the flexible element is a double-row chain, the tensioner includes a rolling element, the rolling element is a double-row sprocket, and the double-row chain meshes with the double-row sprocket.

[0021] Thirdly, this utility model also provides a handling device, including a frame, a suspended basket, and a flexible transmission device as described in any of the embodiments of the second aspect. The suspended basket is slidably connected to the frame. The drive structure and tensioner of the flexible transmission device are both disposed on the frame. The flexible element of the flexible transmission device is connected to the suspended basket. The drive structure is used to drive the flexible element to rotate relative to the frame to move the suspended basket.

[0022] By configuring a tensioner comprising a housing, an elastic element, and a tensioning element, the housing encloses a receiving space, the elastic element is received within the receiving space, one end of the tensioning element is received within the receiving space and connected to the elastic element, and the other end of the tensioning element is used to contact the flexible element. The tensioning element is used to rotate to compress the elastic element. The elastic tension of the elastic element is positively correlated with the rotation angle of the tensioning element, so that when the force exerted on the tensioning element by the flexible element decreases due to relaxation or load changes, the elastic element automatically releases the elastic tension through elastic deformation and drives the tensioning element to rotate towards the flexible element, so that the tensioning element and the flexible element re-closely contact each other, ensuring that the flexible element is always in a taut state. This achieves real-time adjustment of the tension of the flexible element and improves the accuracy of tension adjustment. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural diagram of a tensioner according to one embodiment;

[0025] Figure 2 A plan view of a tensioner according to one embodiment;

[0026] Figure 3 One embodiment Figure 2 Sectional view at point AA;

[0027] Figure 4 This is a partial structural diagram of a handling device according to one embodiment;

[0028] Figure 5 One embodiment Figure 4 Partial sectional view at point BB

[0029] Figure 6 One embodiment Figure 4 A magnified view of a section at point C.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1000 - Handling equipment;

[0032] 100 - Flexible transmission device;

[0033] 10-Tensioner, 11-Housing shell, 111-Receiving space, 112-Positioning part, 113-Base, 114-Cylinder, 12-Elastic element, 13-Tensioning element, 131-Pivot shaft, 132-Connecting arm, 133-Contact structure, 134-Tensioning shaft, 135-Rolling element, 136-Busset, 137-Snap ring;

[0034] 20 - Flexible components;

[0035] 30 - Drive structure; 31 - Drive component; 32 - Driving wheel; 33 - Driven wheel;

[0036] 200 - Frame, 201 - Top beam, 202 - Bottom beam, 203 - Vertical beam;

[0037] 300-Suspended platform, 301-Bearing component, 302-Installation component, 303-Adjusting component. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0040] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0041] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0042] Please refer to Figures 1 to 3This utility model provides a tensioner 10, including a housing 11, an elastic element 12, and a tensioning element 13. The housing 11 encloses a receiving space 111, the elastic element 12 is received in the receiving space 111, one end of the tensioning element 13 is received in the receiving space 111 and connected to the elastic element 12, and the other end of the tensioning element 13 is used to contact a flexible element 20. The tensioning element 13 is used to rotate to compress the elastic element 12, and the elastic tension of the elastic element 12 is positively correlated with the rotation angle of the tensioning element 13.

[0043] When the tensioner 10 is in operation, the tensioning member 13 rotates and, together with the outer casing 11, presses against the elastic member 12, causing the elastic member 12 to undergo elastic deformation. At this time, the elastic member 12 applies a force to one end of the tensioning member 13. Simultaneously, the flexible member 20 contacts the other end of the tensioning member 13, applying another force to the tensioning member 13. The tensioning member 13 remains stationary under the combined action of the two forces. When the flexible member 20 loosens due to wear, temperature changes, or tensile deformation, the force exerted by the flexible member 20 on the tensioning member 13 decreases, causing the force balance of the tensioning member 13 to fail. At this time, the elastic member 12 releases elastic tension onto the tensioning member 13, causing the tensioning member 13 to rotate toward the flexible member 20, so that the tensioning member 13 and the flexible member 20 re-engage tightly. Instead, the flexible member 20 is re-tensioned under the force of the tensioning member 13, and the tensioning member 13 returns to a state of force balance and remains stationary.

[0044] The tensioner 10 includes a housing 11, an elastic element 12, and a tensioning element 13. The housing 11 encloses a receiving space 111, the elastic element 12 is received in the receiving space 111, one end of the tensioning element 13 is received in the receiving space 111 and connected to the elastic element 12, and the other end of the tensioning element 13 is used to contact the flexible element 20. The tensioning element 13 is used to rotate to compress the elastic element 12. The elastic tension of the elastic element 12 is positively correlated with the rotation angle of the tensioning element 13. This allows the elastic element 12 to automatically release the elastic tension through elastic deformation and drive the tensioning element 13 to rotate towards the flexible element 20 when the force exerted on the tensioning element 13 by the flexible element 20 decreases due to relaxation or load changes. This enables the tensioning element 12 to rotate towards the flexible element 20, so that the tensioning element 13 and the flexible element 20 can re-close tightly, ensuring that the flexible element 20 is always in a tensioned state. This achieves real-time adjustment of the tension of the flexible element 20 and improves the accuracy of tension adjustment.

[0045] Optionally, the elastic element 12 is at least one of a helical spring, torsion spring, leaf spring, plate spring, elastic polymer, and pneumatic component. Optionally, when the elastic element 12 is a pneumatic component, it can be an air bladder, air spring, or pneumatic cylinder, etc., without limitation. The tensioner 10 provided by this utility model uses at least one of a helical spring, torsion spring, leaf spring, plate spring, elastic polymer, and pneumatic component as the elastic element 12, enabling the tensioner 10 to achieve a tensioning effect with high adaptability, high reliability, and low maintenance cost for different working conditions.

[0046] For example, the elastic element 12 is an elastic polymer, specifically polyurethane, rubber, silicone, etc., without limitation. When the tensioning element 13 rotates and together with the outer shell 11 compresses the elastic element 12, the elastic element 12 undergoes volume compression under pressure, the molecular chains are squeezed and store elastic potential energy. At the same time, due to the isotropic properties of the elastic polymer, the pressure on the elastic element 12 can be evenly transmitted to the entire elastic element 12, avoiding local stress concentration. When the flexible element 20 relaxes, the force exerted by the flexible element 20 on the tensioning element 13 decreases. At this time, the elastic potential energy stored in the elastic element 12 is released, pushing the tensioning element 13 to rotate towards the flexible element 20 to re-tighten the flexible element 20. During this process, due to the nonlinear stress-strain curve characteristics of the elastic polymer, the elastic element 12 can respond quickly when the flexible element 20 relaxes slightly, and can provide progressive tension compensation when it relaxes significantly. In addition, the elastic element 12 also has the damping properties of the elastic polymer to absorb vibration and prevent the tensioning element 13 from swinging violently due to instantaneous load changes.

[0047] Optionally, the outer casing 11 includes a positioning part 112, which is used for positioning when the tensioner 10 is installed and when the tensioning member 13 is inserted into the receiving space 111. Specifically, the outer casing 11 includes a base 113 and a cylindrical body 114. The cylindrical body 114 is connected and fixed to the base 113. The cylindrical body 114 encloses the receiving space 111, and the opening of the receiving space 111 faces away from the cylindrical body 114. The positioning part 112 is a groove formed from the outer peripheral side of the base 113 to the inner peripheral side of the base 113. When the tensioner 10 is installed, the corresponding positioning structure on the mounting base can be matched with the groove for positioning. Alternatively, the opening of the groove can be oriented towards a preset direction for positioning when the tensioner 10 is installed, without limitation. In addition, when installing the tensioner 13 to the housing 11, it can also be positioned by the positioning part 112 so that the installation direction of the tensioner 10 and the installation direction of the tensioner 13 correspond to each other so that after rotating the tensioner 13, the tensioner 13 can contact the flexible member 20 and apply tension force.

[0048] Please refer to Figures 1 to 3 The tensioning member 13 includes a pivot shaft 131, a connecting arm 132, and a contact structure 133. One end of the connecting arm 132 is connected to the contact structure 133, and the other end is connected to the pivot shaft 131. The contact structure 133 is used to contact the flexible member 20. The pivot shaft 131 is housed in the receiving space 111. The elastic member 12 is connected to the outer peripheral surface of the pivot shaft 131 and / or the end face of the pivot shaft 131.

[0049] In one embodiment, the elastic element 12 is connected to the end face of the pivot shaft 131. One end of the elastic element 12 is connected to the end face of the pivot shaft 131, and the other end is connected to the bottom wall of the receiving space 111. When the tensioning element 13 rotates, the elastic element 12 undergoes elastic deformation under the action of the tensioning element 13 and the outer shell 11.

[0050] Optionally, countersunk holes are formed on the end face of the pivot shaft 131 and the bottom wall of the receiving space 111. The two countersunk holes are arranged opposite each other, and the two ends of the elastic member 12 are respectively received in the two countersunk holes. When the tensioning member 13 rotates, the inner walls of the two countersunk holes compress the elastic member 12, causing the elastic member 12 to undergo elastic deformation. When the elastic member 12 releases its elastic potential energy, the elastic member 12 applies a force to the inner wall of the countersunk hole on the pivot shaft 131, causing the tensioning member 13 to rotate. Optionally, the outline shape of the two countersunk holes and the outer outline shape of the end of the elastic member 12 that extends into the countersunk hole are both non-circular, so that the elastic member 12 will not slip between the inner wall of the countersunk hole when the tensioning member 13 rotates. Optionally, there are multiple elastic members 12, and all of the multiple elastic members 12 are connected to the end face of the pivot shaft 131.

[0051] Optionally, the pivot shaft 131 is rotatably connected to the outer casing 11. In one embodiment, the tensioner 10 further includes a bearing, the inner ring of which is fitted onto the pivot shaft 131, and the outer ring of which is connected and fixed to the inner peripheral wall of the outer casing 11. In another embodiment, the elastic element 12 encloses a through hole, and the tensioner 10 further includes a pin and bushing, etc., which pass through the elastic element 12 and are connected and fixed to both the end face of the pivot shaft 131 and the outer casing 11. By setting the pivot shaft 131 to be rotatably connected to the outer casing 11, the tensioner 13 and the outer casing 11 are less likely to separate due to vibration and friction, thus improving the stability of the tensioner 10.

[0052] In another embodiment, the elastic element 12 is connected to the outer peripheral surface of the pivot shaft 131. The outer peripheral contour of the pivot shaft 131 and the inner peripheral wall of the outer shell 11 are both polygonal. The elastic element 12 is disposed between the outer peripheral surface of the pivot shaft 131 and the inner peripheral wall of the outer shell 11. When the tensioner 13 rotates, the outer peripheral surface of the pivot shaft 131 and the inner peripheral wall of the outer shell 11 compress the elastic element 12, causing the elastic element 12 to undergo elastic deformation. When the elastic element 12 releases its elastic potential energy, the elastic element 12 applies a force to the outer peripheral surface of the pivot shaft 131, causing the tensioner 13 to rotate as the flexible element 20 relaxes.

[0053] Optionally, the outer periphery of the pivot shaft 131 and the inner periphery of the housing 11 can both be non-circular shapes such as square, triangle, pentagon, hexagon and ellipse, and the maximum outer diameter of the pivot shaft 131 is smaller than the minimum outer diameter of the inner periphery of the housing 11, so that no wear occurs between the pivot shaft 131 and the inner periphery of the housing 11 when the tensioning member 13 rotates, and at the same time, it provides installation space for the elastic member 12.

[0054] Optionally, any two adjacent outer surfaces of the pivot shaft 131 are smoothly connected, and any two adjacent inner sidewalls of the housing 11 are smoothly connected, to prevent the sharp part of the pivot shaft 131 from causing wear to the elastic element 12 and the housing 11, while increasing the force-bearing area between the pivot shaft 131, the housing 11 and the elastic element 12.

[0055] For example, the outer periphery of the pivot shaft 131 and the inner periphery of the housing 11 are both square to reduce the processing difficulty of the pivot shaft 131 and the housing 11, while providing sufficient installation space for the elastic element 12 so that the elastic element 12 has a larger volume and greater deformation capacity, force-bearing area and anti-aging properties. In addition, the shape requirements of the elastic element 12 are reduced, and the processing difficulty of the elastic element 12 is reduced.

[0056] Specifically, the four outer walls of the pivot shaft 131 are correspondingly positioned opposite the four inner corners of the outer casing 11. Four elastic elements 12 are positioned between the four outer walls of the pivot shaft 131 and the four inner corners of the outer casing 11. The cross-sectional shape of the elastic element 12 can be circular, triangular, elliptical, etc., without limitation. For example, the cross-sectional shape of the elastic element 12 is triangular, and any two adjacent outer surfaces of the elastic element 12 are smoothly connected, increasing the force-bearing area between the pivot shaft 131, the outer casing 11, and the elastic element 12.

[0057] Optionally, the four elastic elements 12 are an integral structure. Specifically, the same end of the four elastic elements 12 along their length is connected to each other, or the outer peripheral surfaces of the four elastic elements 12 are connected end to end in sequence, so that the four elastic elements 12 can be installed into the receiving space 111 at the same time, reducing the installation difficulty of the elastic elements 12.

[0058] Optionally, the pivot shaft 131 is rotatably connected to the outer casing 11. In one embodiment, the end face of the tensioning member 13 and the bottom wall of the receiving space 111 are rotatably connected by a structure such as a bearing, a pin, and a bushing. In another embodiment, the tensioner 10 further includes a bearing, the inner ring of which is fitted onto the pivot shaft 131, and the outer ring of which is fixedly connected to the inner peripheral wall of the outer casing 11. The bearing is located on one side of the elastic member 12 along its length. By rotatably connecting the pivot shaft 131 to the outer casing 11, the tensioning member 13 and the outer casing 11 are less likely to separate due to vibration and friction, thus improving the stability of the tensioner 10.

[0059] By setting the four outer walls of the pivot shaft 131 to correspond one-to-one with the four inner corners of the outer shell 11, and by setting four elastic elements 12 one-to-one between the four outer walls of the pivot shaft 131 and the four inner corners of the outer shell 11, the forces exerted by the four elastic elements 12 on the tensioning element 13 can cancel each other out, so that the resultant force of the four elastic elements 12 is always directed toward the rotation center of the pivot shaft 131. The pivot shaft 131 is subjected to uniform force, avoiding one-sided wear. At the same time, it provides sufficient installation space for the elastic elements 12, which is beneficial to increasing the volume of the elastic elements 12. In addition, when one or more of the four elastic elements 12 fail, the remaining normal elastic elements 12 can still release elastic potential energy to the tensioning element 13, reducing the risk of tensioning failure.

[0060] Please refer to Figures 1 to 3 In the axial direction of the pivot shaft 131, the orthographic projection of the elastic element 12 at least partially coincides with the orthographic projection of the connecting arm 132. Specifically, the receiving space 111 has an opening facing the connecting wall, which allows the elastic element 12 and the pivot shaft 131 to extend into the receiving space 111. The end of the connecting arm 132 near the pivot shaft 131 is at least partially opposite the elastic element 12, so that when the elastic element 12 loosens in the receiving space 111, it will not come out of the opening under the limiting action of the connecting arm 132, thereby improving the stability of the tensioner 10 and reducing the risk of external impurities entering the receiving space 111 and damaging the pivot shaft 131 and the elastic element 12.

[0061] Please refer to Figure 1 The contact structure 133 includes a tensioning shaft 134 and a rolling element 135. The rolling element 135 is used to contact the flexible element 20. The tensioning shaft 134 is rotatably connected to the connecting arm 132, and / or the rolling element 135 is rotatably connected to the tensioning shaft 134. Optionally, the tensioning shaft 134 can be rotatably connected to the connecting arm 132 and / or the rolling element 135 through bearings, pins, bushings, etc., without limitation.

[0062] In one embodiment, the tensioning shaft 134 is rotatably connected to the connecting arm 132, and the rolling element 135 is fixedly connected to the tensioning shaft 134. When the flexible element 20 is relaxed, the tensioning shaft 134 and the rolling element 135 rotate relative to the connecting arm 132 under the combined action of the flexible element 20 and the elastic element 12. In another embodiment, the tensioning shaft 134 is fixedly connected to the connecting arm 132, and the rolling element 135 is rotatably connected to the tensioning shaft 134. When the flexible element 20 is relaxed, the rolling element 135 rotates relative to the tensioning shaft 134 under the combined action of the flexible element 20 and the elastic element 12. In yet another embodiment, the tensioning shaft 134 is rotatably connected to the connecting arm 132, and the rolling element 135 is rotatably connected to the tensioning shaft 134. When the flexible element 20 is relaxed, the rolling element 135 and / or the tensioning shaft 134 rotate relative to the connecting arm 132 under the combined action of the flexible element 20 and the elastic element 12. For example, the tensioning shaft 134 is connected and fixed to the connecting arm 132, the rolling element 135 is rotatably connected to the tensioning shaft 134, the tensioning shaft 134 is fitted with a bushing 136, the bushing 136 passes through the rolling element 135 and is connected and fixed to the rolling element 135, and the tensioning shaft 134 is also fitted with a retaining ring 137 for limiting the bushing 136.

[0063] Optionally, the rolling element 135 can be a sprocket, tensioner, friction liner, idler wheel, guide vane, air cushion, etc., for contact with chains, belts, ropes, timing belts, film conveyor belts, etc. For examples, please refer to... Figure 6 The flexible component 20 is a chain, and the rolling component 135 is a sprocket, which is used to mesh with the chain.

[0064] Optionally, the pivot shaft 131 and the tensioning shaft 134 can be located on the same side of the connecting arm 132, or they can be located on opposite sides of the connecting arm 132, without limitation. Optionally, when the connecting arm 132 extends in a straight line, the pivot shaft 131 and the tensioning shaft 134 can be arranged perpendicular to the connecting arm 132, or they can be arranged at an angle relative to the connecting arm 132, without limitation. Optionally, the included angle between the pivot shaft 131 and the connecting arm 132, and the included angle between the tensioning shaft 134 and the connecting arm 132, can be the same or different, without limitation.

[0065] By setting the contact structure 133 to include a tensioning shaft 134 and a rolling element 135, the rolling element 135 is used to contact the flexible element 20, the tensioning shaft 134 is rotatably connected to the connecting arm 132, and / or the rolling element 135 is rotatably connected to the tensioning shaft 134, so that when the tensioning element 13 and the flexible element 20 move relative to each other, local scratching will not occur, thus avoiding damage to the flexible element 20. At the same time, when the force applied by the flexible element 20 to the tensioning element 13 changes, it can be prevented from being offset by friction, thereby improving the accuracy and response speed of the tensioner 10 in adjusting the flexible element 20.

[0066] Please refer to Figures 4 to 6The present invention also provides a flexible transmission device 100, including a drive structure 30, a flexible element 20 and a tensioner 10 in the embodiments of the present invention. The drive structure 30 is connected to the flexible element 20 and is used to drive the flexible element 20 to rotate. The tensioning element 13 of the tensioner 10 contacts the flexible element 20 to provide tension force.

[0067] Optionally, the drive structure 30 includes a drive member 31, a drive wheel 32, and a driven wheel 33. The output shaft of the drive member 31 is connected to the drive wheel 32. The drive wheel 32 and the driven wheel 33 are connected by a flexible member 20. When the drive member 31 drives the drive wheel 32 to rotate, it drives the flexible member 20 to move. At the same time, the flexible member 20 drives the driven wheel 33 to rotate, thus realizing flexible transmission.

[0068] Optional, please refer to Figure 5 When the flexible element 20 is wound around the driving wheel 32 and the driven wheel 33, the flexible element 20 is annular with an inner ring and an outer ring. The tensioning element 13 of the tensioner 10 can contact either the inner ring or the outer ring of the flexible element 20, without restriction. When the tensioner 10 contacts the outer ring of the flexible element 20, the elastic element 12 releases elastic potential energy to the tensioning element 13, causing the tensioning element 13 to rotate from the outer ring of the flexible element 20 towards the inner ring of the flexible element 20, thereby tensioning the flexible element 20 inward. When the tensioner 10 contacts the inner ring of the flexible element 20, the elastic element 12 releases elastic potential energy to the tensioning element 13, causing the tensioning element 13 to rotate from the inner ring of the flexible element 20 towards the outer ring of the flexible element 20, thereby tensioning the flexible element 20 outward.

[0069] Optionally, the flexible element 20 can be one of a chain, belt, rope, synchronous belt, or film conveyor belt, so that the flexible transmission device 100 can select different types of flexible elements 20 according to the needs of different scenarios to achieve power transmission.

[0070] In one implementation method, please refer to Figure 4 The flexible element 20 is a double-row chain, and the rolling element 135 of the tensioner 10 is a double-row sprocket. The double-row chain meshes with the double-row sprocket, and the flexible element 20 has a larger contact area with the drive structure 30, which improves the maximum torque and transmission efficiency of the flexible transmission device 100, and also reduces the unilateral wear, axial load and transmission error of the flexible transmission device 100. At the same time, the double-row sprocket of the rolling element 135 can provide uniform tension to the two sets of roller chains of the double-row chain.

[0071] The flexible transmission device 100 provided by this utility model, by adopting the tensioner 10 in the embodiment of this utility model, realizes real-time adjustment of the tension of the flexible component 20, and improves the accuracy of tension adjustment, thereby improving the transmission efficiency and service life of the flexible transmission device 100.

[0072] Please refer to Figures 4 to 6 The present invention also provides a handling device 1000, including a frame 200, a suspended basket 300 and a flexible transmission device 100 in the embodiments of the present invention. The suspended basket 300 is slidably connected to the frame 200. The drive structure 30 and the tensioner 10 of the flexible transmission device 100 are both disposed on the frame 200. The flexible element 20 of the flexible transmission device 100 is connected to the suspended basket 300. The drive structure 30 is used to drive the flexible element 20 to rotate relative to the frame 200 so as to move the suspended basket 300.

[0073] Optionally, the tensioner 10 and the flexible member 20 of the flexible transmission device 100 are arranged at intervals relative to each other on the frame 200. When the tensioner 10 is in working state, the tensioner 10 is rotated to make the tensioner 13 contact the flexible member 20 and cause the elastic member 12 to undergo elastic deformation, so as to realize real-time adjustment of the tension of the flexible member 20.

[0074] Optionally, both ends of the suspended platform 300 are slidably connected to the frame 200 through a structure such as a slide rail or a sliding sleeve to prevent the suspended platform 300 from tilting and damaging the suspended platform 300 and the frame 200 when moving relative to the frame 200. One end of the suspended platform 300 is connected to the flexible member 20, which drives the suspended platform 300 to move relative to the frame 200 under the drive of the drive structure 30.

[0075] Specifically, the frame 200 includes a top beam 201, a bottom beam 202, and multiple vertical beams 203. The top beam 201 and the bottom beam 202 are arranged at intervals relative to each other in the vertical direction. The multiple vertical beams 203 are arranged at intervals between the top beam 201 and the bottom beam 202, and are all connected and fixed to the top beam 201 and the bottom beam 202. The driving component 31 of the drive structure 30 is arranged on the top beam 201, the driven wheel 33 of the drive structure 30 is arranged on the bottom beam 202, the tensioner 10 is arranged on the top beam 201 near the flexible component 20, and the suspended basket 300 is slidably connected to at least one vertical beam 203.

[0076] Optionally, two flexible transmission devices 100 are provided, arranged at intervals relative to each other on the frame 200. The two ends of the suspended platform 300 are respectively connected and fixed to the flexible components 20 of the two flexible transmission devices 100 to further improve the motion stability of the suspended platform 300. Optionally, the flexible transmission devices 100 can be used to drive the suspended platform 300 to perform lifting and lowering movements, or to drive the suspended platform 300 to perform horizontal movement, or to drive the suspended platform 300 to perform oblique upward and downward movements, without limitation.

[0077] Optionally, the suspended platform 300 includes a load-bearing component 301 and a mounting component 302. The load-bearing component 301 is connected and fixed to the mounting component 302, and the mounting component 302 is connected to the flexible component 20. The load-bearing component 301 is used to carry materials. Both ends of the flexible component 20 are connected to the mounting component 302 through adjusting components 303. The adjusting components 303 are movably connected to the mounting component 302 and are used to move relative to the mounting component 302 to adjust the tightness of the flexible component 20.

[0078] The handling equipment 1000 provided by this utility model, by adopting the flexible transmission device 100 in the embodiment of this utility model, realizes real-time adjustment of the tension of the flexible component 20, and improves the accuracy of tension adjustment, thereby improving the motion stability of the suspended basket 300.

[0079] In the description of the embodiments of this utility model, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0080] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the present utility model.

Claims

1. A tensioner characterized by, include: The outer shell encloses the containment space; The elastic element is housed within the receiving space; The tensioning member has one end housed in the receiving space and connected to the elastic member, and the other end of the tensioning member is used to contact the flexible member; The tensioning member is used to rotate to compress the elastic member, and the elastic tension of the elastic member is positively correlated with the rotation angle of the tensioning member.

2. The tensioner of claim 1, wherein The tensioning element includes a pivot shaft housed in the receiving space, and the elastic element is connected to the outer peripheral surface of the pivot shaft and / or the end face of the pivot shaft.

3. The tensioner of claim 2, wherein The pivot shaft is rotatably connected to the outer casing.

4. The tensioner according to claim 2, characterized in that, The outer peripheral contour of the pivot shaft and the inner peripheral wall of the housing are both polygonal, and the elastic element is disposed between the outer peripheral surface of the pivot shaft and the inner peripheral wall of the housing.

5. The tensioner of claim 4, wherein, The outer periphery of the pivot shaft and the inner periphery of the outer shell are both square.

6. The tensioner of claim 5, wherein, The four outer walls of the pivot shaft are arranged in a one-to-one correspondence with the four inner corners of the outer shell; There are four elastic elements, which are respectively disposed one-to-one between the four outer walls of the pivot shaft and the four inner corners of the outer shell.

7. The tensioner of claim 6, wherein The four elastic elements are an integral structure.

8. The tensioner of claim 2, wherein, The tensioning member also includes a connecting arm and a contact structure. One end of the connecting arm is connected to the contact structure, and the other end is connected to the pivot shaft. The contact structure is used to contact the flexible member.

9. The tensioner of claim 8, wherein, The contact structure includes a tensioning shaft and a rolling element, the rolling element being used to contact the flexible element; The tensioning shaft is rotatably connected to the connecting arm, and / or the rolling element is rotatably connected to the tensioning shaft.

10. The tensioner of claim 9, wherein, The flexible component is a chain, and the rolling component is a sprocket, which is used to mesh with the chain.

11. The tensioner according to claim 8, characterized in that, Along the axial direction of the pivot shaft, the orthographic projection of the elastic element at least partially coincides with the orthographic projection of the connecting arm.

12. The tensioner of claim 1, wherein, The housing includes a positioning part for positioning the tensioner when it is installed and when the tensioner is inserted into the receiving space.

13. A tensioner as claimed in any of claims 1 to 12, characterised in that, The elastic element is at least one of a helical spring, torsion spring, leaf spring, leaf spring, elastic polymer, and pneumatic component.

14. A flexible transmission, characterized by The device includes a drive structure, a flexible element, and a tensioner as described in any one of claims 1-13, wherein the drive structure is kinetically connected to the flexible element and is used to drive the flexible element to rotate, and the tensioning element of the tensioner contacts the flexible element to provide tension.

15. The flexible transmission of claim 14, wherein, The flexible component is one of the following: chain, belt, rope, synchronous belt, or membrane conveyor belt.

16. The flexible transmission of claim 14, wherein, The flexible component is a double-row chain, and the tensioner includes a rolling element, which is a double-row sprocket. The double-row chain meshes with the double-row sprocket.

17. A handling apparatus, characterised in that, The device includes a frame, a suspended platform, and a flexible transmission device as described in any one of claims 14-16. The suspended platform is slidably connected to the frame. The drive structure and tensioner of the flexible transmission device are both disposed on the frame. The flexible element of the flexible transmission device is connected to the suspended platform. The drive structure is used to drive the flexible element to rotate relative to the frame to move the suspended platform.

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