Chain wheel tensioning device of profile steel lifting chain

Abstract

The invention provides a chain wheel tensioning device of a profile steel lifting chain, which comprises a tensioning wheel rotationally connected in a connecting frame; the supporting frame is fixedly connected to the end of the lifting chain, the supporting frame is a U-shaped structural part, a sliding groove corresponding to the connecting frame is formed in the inner wall of the supporting frame, and the connecting frame is movably arranged on the inner side of the sliding groove; a compression spring is arranged between the connecting frame and the supporting frame, and the two ends of the compression spring abut against the inner wall of the supporting frame and the outer wall of the connecting frame respectively. The device has the beneficial effects that in the rotating process of the chain and the chain wheel, when sundries are clamped into the driving chain wheel, the chain becomes tight, the compression spring is compressed for buffering, the chain is prevented from being broken, in addition, the compression amount of the compression spring and the elastic force of the compression spring are adjusted through the adjusting sleeve, and the use range of the device is widened.

Description

Technical Field

[0001] This invention belongs to the field of cooling bed lifting chains, and in particular relates to a sprocket tensioning device for a steel lifting chain. Background Technology

[0002] Lifting chains are an important component of many pieces of equipment in the steel profile production line. They are used in various areas, including the straightening zone cooling bed lifting chain, the grouping zone grouping table lifting chain, and the inspection zone inspection table lifting chain. They are used in conjunction with the equipment's inlet and outlet roller conveyors and are an essential part of the equipment in each area of ​​the steel profile production line.

[0003] Chains are commonly used transmission components in the production of rolled steel. When the chain is too long, a tensioning wheel needs to be installed to tension the chain and ensure transmission efficiency. The current chain tensioning wheel installation structure has the following problems in use: it lacks a buffer structure. When foreign objects get stuck in the driving or driven sprocket, it will cause the chain to become too tight, and in severe cases, it will cause the sprocket to break. In addition, the current sprocket often fails to perform automatic tensioning due to uneven sliding during the automatic tensioning process. Summary of the Invention

[0004] In view of this, the present invention aims to provide a sprocket tensioning device for a steel lifting chain, in order to solve at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] The first aspect of this invention provides a sprocket tensioning device for a steel lifting chain, comprising:

[0007] The tensioning wheel is rotatably connected within the connecting frame;

[0008] A support frame is fixedly connected to the end of the lifting chain. The support frame is a U-shaped structure. A sliding groove corresponding to the connecting frame is opened on the inner wall of the support frame. The connecting frame is movably arranged inside the sliding groove.

[0009] A compression spring is provided between the connecting frame and the support frame, and the two ends of the compression spring are respectively pressed against the inner wall of the support frame and the outer wall of the connecting frame.

[0010] Furthermore, the outer wall of the connecting frame has multiple arc-shaped grooves, and each arc-shaped groove is provided with a ball bearing. The ball bearing rolls on the inner wall of the sliding groove along the movement direction of the connecting frame within the arc-shaped groove.

[0011] Furthermore, the inner wall of the sliding groove has multiple rolling grooves corresponding to the arc-shaped groove, and the ball is located inside the rolling groove.

[0012] Furthermore, multiple arc-shaped grooves are respectively formed on the end face of the connecting frame away from the tension wheel, the upper end face of the connecting frame, and the lower end face of the connecting frame. The multiple arc-shaped grooves on the upper end face and the lower end face of the connecting frame are equidistantly distributed, and the multiple arc-shaped grooves on the end face of the connecting frame away from the tension wheel are evenly distributed around the axis of the tension wheel.

[0013] Furthermore, an embedding hole is provided in the middle of the connecting frame, and a bearing is provided in the embedding hole. The outer wall of the bearing is fixedly connected to the inner wall of the embedding hole, and the inner wall of the bearing is fixedly connected to the rotating shaft of the tensioning wheel.

[0014] Furthermore, the bottom surface of the support frame has a drive hole, and the connecting frame is provided with a drive rod corresponding to the drive hole. The drive rod is inserted into the drive hole, and the compression spring is wound around the outer wall of the drive rod.

[0015] Furthermore, the inner wall of the drive hole has an internal thread, and an adjusting sleeve is provided between the drive rod and the drive hole. The outer wall of the adjusting sleeve has an external thread corresponding to the internal thread. The adjusting sleeve is threaded into the drive hole, and the inner wall of the adjusting sleeve fits against the outer wall of the drive rod. One end of the adjusting sleeve near the connecting frame is fixedly connected to a compression spring.

[0016] Furthermore, a stop block corresponding to the sliding groove is fixed at the end of the connecting frame, and the end of the stop block away from the connecting frame abuts against the inner wall of the sliding groove.

[0017] A second aspect of the present invention provides a steel lifting chain, applied to the sprocket tensioning device described in the first aspect, comprising:

[0018] A movable support, one end of which is equipped with a sprocket tensioning device, and the other end is hinged to a stationary support. A chain is wrapped around the outside of the movable support and the stationary support.

[0019] A stationary support, wherein a drive shaft for driving the chain is provided at the bottom of the stationary support;

[0020] A lifting assembly, wherein the power output end of the lifting assembly is hinged to the moving bracket.

[0021] Furthermore, the lifting assembly includes:

[0022] A transmission rod, one end of which is hinged to the movable support;

[0023] The swing arm is a V-shaped structural component. The middle part of the swing arm is hinged to the first fixed block, and the two ends of the swing arm are respectively hinged to the transmission rod and the power output end of the cylinder.

[0024] A cylinder, wherein the cylinder body is hinged to the second fixed block;

[0025] The first fixing block and the second fixing block are fixed to the ground.

[0026] Compared with the prior art, the sprocket tensioning device for a steel lifting chain described in this invention has the following advantages: During the rotation of the chain and sprocket, when debris gets stuck in the drive sprocket, the chain tightens and the compression spring is compressed to buffer the impact and prevent the chain from breaking. In addition, the compression amount and elasticity of the compression spring can be adjusted by adjusting the adjusting sleeve, thus broadening the application range of the device. The ball bearings improve the smoothness of sliding between the connecting frame and the support frame, preventing the automatic tensioning function from jamming. Attached Figure Description

[0027] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0028] Figure 1 This is a front view cross-sectional diagram of the sprocket tensioning device according to an embodiment of the present invention;

[0029] Figure 2 This is a top view cross-sectional diagram of the sprocket tensioning device according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the right-side cross-sectional structure of the sprocket tensioning device according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the overall structure of the steel lifting chain according to an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Tensioner wheel; 2. Support frame; 21. Rolling groove; 22. Drive rod; 23. Adjusting sleeve; 3. Connecting frame;

[0034] 4. Compression spring; 5. Ball bearing; 6. Bearing; 7. Moving bracket; 8. Stationary bracket; 9. Lifting assembly. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not 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 the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] A sprocket tensioning device for a steel lifting chain includes:

[0040] Tensioner 1, which is rotatably connected to the connecting frame 3;

[0041] Support frame 2 is fixedly connected to the end of the lifting chain. Support frame 2 is a U-shaped structure. The inner wall of support frame 2 has a sliding groove corresponding to the connecting frame 3. The connecting frame 3 is movably arranged inside the sliding groove.

[0042] A compression spring 4 is provided between the connecting frame 3 and the support frame 2, and the two ends of the compression spring 4 are respectively pressed against the inner wall of the support frame 2 and the outer wall of the connecting frame 3.

[0043] In some embodiments, the end face of the connecting frame 3 away from the tension wheel 1 has a slot, and the portion of the sliding groove near the tension wheel 1 is fixed with a corresponding block. The block is located inside the slot, and both the slot and the block are set along the moving trajectory of the connecting frame 3.

[0044] The outer wall of the connecting frame 3 has multiple arc-shaped grooves, and each arc-shaped groove is provided with a ball bearing 5. The ball bearing 5 rolls on the inner wall of the sliding groove along the movement direction of the connecting frame 3 within the arc-shaped groove.

[0045] The inner wall of the sliding groove has multiple rolling grooves 21 corresponding to the arc-shaped groove, and the ball 5 is located inside the rolling groove 21.

[0046] Multiple arc-shaped grooves are respectively opened on the end face of the connecting frame 3 away from the tension wheel 1, the upper end face of the connecting frame 3, and the lower end face of the connecting frame 3. The multiple arc-shaped grooves on the upper end face and the lower end face of the connecting frame 3 are equidistantly distributed, and the multiple arc-shaped grooves on the end face of the connecting frame 3 away from the tension wheel 1 are evenly distributed around the axis of the tension wheel 1.

[0047] An embedding hole is provided in the middle of the connecting frame 3. A bearing 6 is provided in the embedding hole. The outer wall of the bearing 6 is fixedly connected to the inner wall of the embedding hole, and the inner wall of the bearing 6 is fixedly connected to the rotating shaft of the tension wheel 1.

[0048] The bottom surface of the support frame 2 has a drive hole, and the connecting frame 3 is provided with a drive rod 22 corresponding to the drive hole. The drive rod 22 is inserted into the drive hole, and the compression spring 4 is wrapped around the outer wall of the drive rod 22.

[0049] The inner wall of the drive hole has an internal thread, and an adjustment sleeve 23 is provided between the drive rod 22 and the drive hole. The outer wall of the adjustment sleeve 23 has an external thread corresponding to the internal thread. The adjustment sleeve 23 is threaded into the drive hole. The inner wall of the adjustment sleeve 23 fits against the outer wall of the drive rod 22. One end of the adjustment sleeve 23 near the connecting frame 3 is fixedly connected to the compression spring 4.

[0050] By rotating the adjusting sleeve 23, the preload of the compression spring 4 can be adjusted through the engagement of its internal and external threads, thereby adjusting the tension of the tensioning wheel 1.

[0051] The end of the connecting frame 3 is fixed with a striking block corresponding to the sliding groove, and the end of the striking block away from the connecting frame 3 is pressed against the inner wall of the sliding groove.

[0052] A type of steel lifting chain, used in the sprocket tensioning device, includes:

[0053] The movable support 7 is provided with a sprocket tensioning device at one end and is hinged to the stationary support 8 at the other end. A chain surrounds the outer sides of the movable support 7 and the stationary support 8.

[0054] A stationary support 8, the bottom of which is provided with a drive shaft for driving the chain movement;

[0055] The lifting assembly 9 has its power output end hinged to the moving bracket 7.

[0056] The lifting assembly 9 includes:

[0057] A transmission rod, one end of which is hinged to the movable bracket 7;

[0058] The swing arm is a V-shaped structural component. The middle part of the swing arm is hinged to the first fixed block, and the two ends of the swing arm are respectively hinged to the transmission rod and the power output end of the cylinder.

[0059] A cylinder, wherein the cylinder body is hinged to the second fixed block;

[0060] The first fixing block and the second fixing block are fixed to the ground.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sprocket tensioning device for a steel lifting chain, characterized in that, include: Tensioner (1), which is rotatably connected to the connecting frame (3); Support frame (2), the support frame (2) is fixedly connected to the end of the lifting chain. The support frame (2) is a U-shaped structural component. The inner wall of the support frame (2) has a sliding groove corresponding to the connecting frame (3). The connecting frame (3) is movably arranged inside the sliding groove. The connecting frame (3) is provided with a compression spring (4) between the support frame (2), and the two ends of the compression spring (4) are respectively pressed against the inner wall of the support frame (2) and the outer wall of the connecting frame (3).

2. The sprocket tensioning device for a steel lifting chain according to claim 1, characterized in that: The outer wall of the connecting frame (3) has multiple arc-shaped grooves, and each arc-shaped groove is provided with a ball (5). The ball (5) rolls on the inner wall of the sliding groove along the movement direction of the connecting frame (3) in the arc-shaped groove.

3. The sprocket tensioning device for a steel lifting chain according to claim 2, characterized in that: The inner wall of the sliding groove has multiple rolling grooves (21) corresponding to the arc-shaped groove, and the ball (5) is located inside the rolling groove (21).

4. The sprocket tensioning device for a steel lifting chain according to claim 2, characterized in that: Multiple arc-shaped grooves are respectively opened on the end face of the connecting frame (3) away from the tension wheel (1), the upper end face of the connecting frame (3), and the lower end face of the connecting frame (3). Multiple arc-shaped grooves located on the upper end face and the lower end face of the connecting frame (3) are equidistantly distributed. Multiple arc-shaped grooves located on the end face of the connecting frame (3) away from the tension wheel (1) are evenly distributed around the axis of the tension wheel (1) along the circumference.

5. The sprocket tensioning device for a steel lifting chain according to claim 1, characterized in that: The connecting frame (3) has an embedding hole in the middle position, and a bearing (6) is provided in the embedding hole. The outer wall of the bearing (6) is fixedly connected to the inner wall of the embedding hole, and the inner wall of the bearing (6) is fixedly connected to the rotating shaft of the tension wheel (1).

6. The sprocket tensioning device for a steel lifting chain according to claim 1, characterized in that: The bottom surface of the support frame (2) has a drive hole, and the connecting frame (3) is provided with a drive rod (22) corresponding to the drive hole. The drive rod (22) is inserted into the drive hole, and the compression spring (4) is wrapped around the outer wall of the drive rod (22).

7. The sprocket tensioning device for a steel lifting chain according to claim 6, characterized in that: The inner wall of the drive hole has an internal thread, and an adjustment sleeve (23) is provided between the drive rod (22) and the drive hole. The outer wall of the adjustment sleeve (23) has an external thread corresponding to the internal thread. The adjustment sleeve (23) is threaded into the drive hole. The inner wall of the adjustment sleeve (23) fits against the outer wall of the drive rod (22). One end of the adjustment sleeve (23) near the connecting frame (3) is fixedly connected to the compression spring (4).

8. The sprocket tensioning device for a steel lifting chain according to claim 1, characterized in that: The end of the connecting frame (3) is fixed with a striking block corresponding to the sliding groove, and the end of the striking block away from the connecting frame (3) is pressed against the inner wall of the sliding groove.

9. A type of steel lifting chain, applied to the sprocket tensioning device of claim 1, characterized in that, include: The movable support (7) is provided with a sprocket tensioning device at one end and is hinged to the stationary support (8) at the other end. The movable support (7) and the stationary support (8) are surrounded by chains. A stationary support (8) is provided at the bottom of which a drive shaft for driving the chain movement is provided; The lifting assembly (9) is hinged to the moving bracket (7) at its power output end.

10. The sprocket tensioning device for a steel lifting chain according to claim 9, characterized in that, The lifting assembly (9) includes: A transmission rod, one end of which is hinged to the moving bracket (7); The swing arm is a V-shaped structural component. The middle part of the swing arm is hinged to the first fixed block, and the two ends of the swing arm are respectively hinged to the transmission rod and the power output end of the cylinder. A cylinder, wherein the cylinder body is hinged to the second fixed block; The first fixing block and the second fixing block are fixed to the ground.

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