Chain folding device

Abstract

The utility model discloses a chain folding device which comprises a first clamping piece, a second clamping piece, a first connecting piece and a second connecting piece. The second clamping piece extends in the first direction, the second clamping piece and the first clamping piece are arranged in a spaced mode in the second direction, the second direction is perpendicular to the first direction, a second clamping face is arranged in the middle of the second clamping piece, and the first clamping face and the second clamping face are oppositely arranged; the first locking assembly is connected with the first end of the first clamping piece and the first end of the second clamping piece. The second locking assembly is connected with the second end of the first clamping piece and the second end of the second clamping piece. The first locking assembly and the second locking assembly are used for providing opposite clamping force for the first clamping piece and the second clamping piece so that the first clamping face can make contact with the circumferential face of the shaft sleeve at the first end of the chain, and the second clamping face can make contact with the circumferential face of the shaft sleeve at the second end of the chain. The two ends of the chain can be firmly fixed, and the disassembly and assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of disassembly and assembly equipment technology, and in particular to a chain closing device. Background Technology

[0002] According to the cigarette manufacturing process, cigarette workshops need to be equipped with dust removal equipment. Dust removal equipment generally includes an ash-discharging motor, a drive chain, and ash-discharging components. When maintaining or repairing the dust removal equipment, the drive chain needs to be disconnected to facilitate cleaning of oil stains at the chain pins. After cleaning, the two ends of the drive chain need to be closed to allow for the installation of pins and restore the chain to its original position.

[0003] Currently, due to the lack of specialized installation tools, clamps are usually used to tighten both ends when closing the chain. However, using clamps can easily lead to problems such as the chain slipping off due to insecure fixing, causing mechanical damage, as well as being time-consuming and laborious. Utility Model Content

[0004] The purpose of this invention is to solve the problems in existing technologies where using clamps to close the two ends of a chain often results in insecure fixing, causing the chain to slip and causing mechanical injury, as well as being time-consuming and labor-intensive. This invention provides a chain closing device that can firmly fix both ends of the chain, preventing chain slippage and thus avoiding mechanical injury to the operator, while also improving assembly and disassembly efficiency.

[0005] To solve the above-mentioned technical problems, this utility model discloses a chain closing device for connecting a first end and a second end of a chain. The chain includes multiple pins and multiple inner and outer chain plates arranged alternately along the extension direction of the chain. Each inner chain plate has a bushing at both ends, and each outer chain plate has a mounting hole at both ends. The pins pass through the mounting holes and are inserted into the bushings to hinge adjacent outer and inner chain plates. The chain closing device includes:

[0006] A first clamping piece extends along a first direction, and a first clamping surface is provided in the middle of the first clamping piece;

[0007] The second clamping piece extends along the first direction and is spaced apart from the first clamping piece along the second direction. The second direction is perpendicular to the first direction. The second clamping piece has a second clamping surface in the middle. The first clamping surface and the second clamping surface are arranged opposite to each other.

[0008] The first locking component is connected to the first end of the first clamping piece and the first end of the second clamping piece, respectively;

[0009] The second locking component is connected to the second end of the first clamping piece and the second end of the second clamping piece, respectively;

[0010] The first locking component and the second locking component are used to provide opposing clamping forces to the first clamping plate and the second clamping plate, so that the first clamping surface contacts the circumferential surface of the bushing at the first end of the chain, and the second clamping surface contacts the circumferential surface of the bushing at the second end of the chain.

[0011] In use, the first clamping piece is inserted into the gap at the first end of the chain along the first direction, and the second clamping piece is inserted into the gap at the second end of the chain along the first direction. Then, the first locking component and the second locking component are locked. The first locking component can provide opposing clamping forces to the first clamping piece and the second clamping piece, so that the first clamping surface contacts the circumferential surface of the bushing at the first end of the chain, and the second clamping surface contacts the circumferential surface of the bushing at the second end of the chain, thereby fixing the two ends of the chain relatively.

[0012] By adopting the above technical solution, both ends of the chain can be firmly fixed, preventing the chain from slipping off, thus avoiding mechanical injury to the operator, and improving disassembly and assembly efficiency.

[0013] Optionally, the first clamping piece has a first through hole at its first end and the second clamping piece has a second through hole at its first end. Both the first through hole and the second through hole extend along the second direction. The first locking assembly includes: a first connecting rod that passes through the first through hole and the second through hole along the second direction. One end of the first connecting rod has a first limiting protrusion, and the other end of the first connecting rod has a first external thread.

[0014] The first nut is threadedly connected to the first external thread, and the first limiting protrusion and the first nut are located on both sides of the first clamping piece and the second clamping piece along the second direction, respectively.

[0015] Optionally, the second end of the first clamping piece is provided with a third through hole, and the second end of the second clamping piece is provided with a fourth through hole, both the third and fourth through holes extending along the second direction. The first locking assembly includes:

[0016] The second connecting rod passes through the third and fourth through holes along the second direction. One end of the second connecting rod is provided with a second limiting protrusion, and the other end of the second connecting rod is provided with a second external thread.

[0017] The second nut is threaded to the second external thread, and the second limiting protrusion and the second nut are located on both sides of the first clamping piece and the second clamping piece respectively along the second direction;

[0018] The specific steps for locking the first locking component and the second locking component after inserting the first clamping piece into the gap at the first end of the chain along the first direction and inserting the second clamping piece into the gap at the second end of the chain along the first direction are as follows:

[0019] The first connecting rod is threaded through the first and second through holes and then connected to the first nut. The second connecting rod is threaded through the third and fourth through holes and then connected to the second nut, so that the first clamping surface contacts the circumferential surface of the bushing at the first end of the chain, and the second clamping surface contacts the circumferential surface of the bushing at the second end of the chain. Then, the first and second nuts are gradually tightened so that the distance between the axes of the bushings at the first and second ends of the chain is equal to the distance between the axes of the two mounting holes on a single outer chain plate. This allows for alignment of one mounting hole on the outer chain plate with the bushing at the first end of the chain, and the other mounting hole with the bushing at the second end of the chain. Finally, two pins are inserted through the two mounting holes and into the two bushings at both ends of the chain to connect the two ends of the chain.

[0020] Optionally, both the first clamping surface and the second clamping surface are arc-shaped surfaces.

[0021] Optionally, the radius of the arcuate surface is greater than or equal to the radius of the bushing.

[0022] Optionally, the minimum distance between the first through hole and the third through hole, and the minimum distance between the second through hole and the fourth through hole, are equal and both greater than the dimension of the chain along the first direction.

[0023] Optionally, both the first connecting rod and the second connecting rod are screws, and both the first limiting protrusion and the second limiting protrusion are nuts.

[0024] Optionally, the first external thread and the second external thread have the same helical direction.

[0025] Optionally, the outer diameter of the first connecting rod is equal to the outer diameter of the second connecting rod, and the diameters of the first through hole, the second through hole, the third through hole, and the fourth through hole are all equal and greater than the outer diameters of the first connecting rod and / or the second connecting rod.

[0026] Optionally, both the first clamping plate and the second clamping plate are made of stainless steel. Attached Figure Description

[0027] Figure 1 This diagram shows the structure of the chain closing device in an embodiment of the present invention.

[0028] Figure 2 A cross-sectional view of the chain closing device in an embodiment of this utility model is shown;

[0029] Figure 3 This is a partial cross-sectional view of the chain closing device in use according to an embodiment of the present invention;

[0030] Figure 4 Show Figure 3 Partial sectional view along direction AA.

[0031] Reference numerals: 1. First end of chain, 2. Second end of chain, 3. Inner chain plate, 4. Outer chain plate, 5. Bushing, 6. Mounting hole, 7. First clamping piece, 8. First clamping surface, 9. Second clamping piece, 10. Second clamping surface, 11. First locking assembly, 12. First end of the first clamping piece, 13. First end of the second clamping piece, 14. Second locking assembly, 15. First through hole, 16. Second through hole, 17. First connecting rod, 18. First limiting protrusion, 19. First nut, 20. Second end of the first clamping piece, 21. Third through hole, 22. Second end of the second clamping piece, 23. Fourth through hole, 24. Second connecting rod, 25. Second limiting protrusion, 26. Second nut, 27. First gap, 28. Second gap. Detailed Implementation

[0032] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0033] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model 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. Therefore, they should not be construed as limitations on the utility model.

[0035] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0036] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" 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 can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0038] like Figure 3 As shown, this utility model discloses a chain closing device for connecting a first end 1 and a second end 2 of a chain. The chain includes multiple pins and multiple pins extending along the chain's extension direction (e.g., ...). Figure 3 Inner chain plates 3 and outer chain plates 4 are arranged alternately in the X direction (as shown). Each inner chain plate 3 has two bushings 5, which are located at both ends of the inner chain plate 3, with a gap between the two bushings 5. Each outer chain plate 4 has a mounting hole 6 at both ends. A pin passes through the mounting hole 6 and is inserted into the bushing 5 to hinge adjacent outer chain plates 4 and inner chain plates 3, thereby connecting multiple outer chain plates 4 and inner chain plates 3 to form a closed chain.

[0039] like Figures 1 to 3 As shown, the chain closing device includes: a first clamping plate 7, a second clamping plate 9, a first locking assembly 11, and a second locking assembly 14. The first clamping plate 7 is positioned along a first direction (e.g., ...). Figure 1 and Figure 3 Extending in the Y direction (as shown), the first clamping piece 7 has a first clamping surface 8 at its center. The second clamping piece 9 extends along the first direction and is parallel to the first clamping piece 7 along the second direction (as shown). Figure 1 The chain is arranged at intervals in the T direction shown. The second direction is perpendicular to the first direction and parallel to the extension direction of the chain. The second clamping plate 9 has a second clamping surface 10 in the middle. The first clamping surface 8 is arranged opposite to the second clamping surface 10. The first locking component 11 is connected to the first end 12 of the first clamping plate and the first end 13 of the second clamping plate, respectively. The second locking component 14 is connected to the second end 20 of the first clamping plate and the second end 22 of the second clamping plate, respectively. The first locking component 11 and the second locking component 14 are used to provide opposing clamping forces to the first clamping plate 7 and the second clamping plate 9, so that the first clamping plate 7 and the second clamping plate 9 are brought closer together, so that the first clamping surface 8 contacts the circumferential surface of the bushing 5 at the first end 1 of the chain, and the second clamping surface 10 contacts the circumferential surface of the bushing 5 at the second end 2 of the chain, so that the chain is tensioned.

[0040] For details, please refer to Figure 3 and Figure 4 The first end 1 of the chain has a first gap 27, and the second end 2 of the chain has a second gap 28. When using the chain closing device, refer to... Figure 3 and Figure 4 The first clamping piece 7 is inserted into the first gap 27 along the first direction, and the second clamping piece 9 is inserted into the second gap 28 along the first direction. Then, the first locking assembly 11 and the second locking assembly 14 are locked. The first locking assembly 11 can provide opposing clamping forces to the first clamping piece 7 and the second clamping piece 9, so that the first clamping surface 8 is in contact with the circumferential surface of the bushing 5 of the first end 1 of the chain, and the second clamping surface 10 is in contact with the circumferential surface of the bushing 5 of the second end 2 of the chain, thereby tensioning both ends of the chain. Subsequently, an outer chain plate 4 and a pin are installed between the first end 1 of the chain and the second end 2 of the chain, so that the outer chain plate 4 is connected to both ends of the chain through the pin.

[0041] By adopting the above technical solution, the closing device can firmly fix both ends of the chain, preventing the chain from slipping off, thus avoiding mechanical injury to the operator, and also improving the efficiency of disassembly and assembly.

[0042] Optionally, such as Figure 1 and Figure 2 As shown, the first end 12 of the first clamping piece has a first through hole 15, and the first end 13 of the second clamping piece has a second through hole 16. Both the first through hole 15 and the second through hole 16 extend along a second direction. The first locking assembly 11 includes a first connecting rod 17 and a first nut 19. The first connecting rod 17 passes through the first through hole 15 and the second through hole 16 along the second direction. One end of the first connecting rod 17 has a first limiting protrusion 18, and the other end of the first connecting rod 17 has a first external thread. The first nut 19 is threadedly connected to the first external thread. The first limiting protrusion 18 and the first nut 19 are located on both sides of the first clamping piece 7 and the second clamping piece 9 along the second direction, respectively, to restrict the opposite movement of the first end 12 of the first clamping piece and the first end 13 of the second clamping piece.

[0043] Optionally, continue to refer to Figure 1 and Figure 2The second end 20 of the first clamping piece has a third through hole 21, and the second end 22 of the second clamping piece has a fourth through hole 23. Both the third through hole 21 and the fourth through hole 23 extend along a second direction. The first locking assembly 11 includes a second connecting rod 24 and a second nut 26. The second connecting rod 24 passes through the third through hole 21 and the fourth through hole 23 along the second direction. One end of the second connecting rod 24 has a second limiting protrusion 25, and the other end of the second connecting rod 24 has a second external thread. The second nut 26 is threadedly connected to the second external thread. The second limiting protrusion 25 and the second nut 26 are located on both sides of the first clamping piece 7 and the second clamping piece 9 along the second direction, respectively, to restrict the opposite movement of the second end 20 of the first clamping piece and the second end 22 of the second clamping piece.

[0044] When using, refer to Figures 1 to 3 The specific steps for locking the first locking component 11 and the second locking component 14 after inserting the first clamping piece 7 into the first gap 27 along the first direction and inserting the second clamping piece 9 into the second gap 28 along the first direction are as follows:

[0045] The first connecting rod 17 passes through the first through hole 15 and the second through hole 16 respectively and is threaded to the first nut 19. The second connecting rod 24 passes through the third through hole 21 and the fourth through hole 23 respectively and is threaded to the second nut 26. After the first nut 19 and the second nut 26 are locked, the first clamping surface 8 contacts the circumferential surface of the bushing 5 at the first end 1 of the chain, and at the same time, the second clamping surface 10 contacts the circumferential surface of the bushing 5 at the second end 2 of the chain. The first clamping surface 8 and the second clamping surface 10 can provide opposing clamping forces to the first clamping piece 7 and the second clamping piece 9, so that the chain is tensioned, thereby reducing the distance between the axes of the bushing 5 at the first end 1 of the chain and the bushing 5 at the second end 2 of the chain (e.g., ...). Figure 3 The distance between the two mounting holes 6 on a single outer chain plate 4 (as shown in the figure) is equal to the distance between the axes of the two mounting holes 6 on the single outer chain plate 4 (e.g., Figure 3 As shown in the medium dimension L5), so that the operator can take an outer chain plate 4 and align one mounting hole 6 on the outer chain plate 4 with the bushing 5 at the first end of the chain, and the other mounting hole 6 on the outer chain plate 4 with the bushing 5 at the second end of the chain. Then, the two pins are inserted into the two bushings 5 ​​at both ends of the chain after passing through the two mounting holes 6 respectively, so that the two ends of the chain are connected.

[0046] Optionally, refer to Figure 3 To prevent slippage, both the first clamping surface 8 and the second clamping surface 10 are arc-shaped surfaces to improve the fit with the circumferential surface of the bushing 5. Furthermore, the radius of the arc-shaped surface is greater than or equal to the radius of the bushing 5.

[0047] Optionally, the minimum distance between the first through hole 15 and the third through hole 21 (e.g.) Figure 2(as shown in the middle dimension L1) and the minimum distance between the second through hole 16 and the fourth through hole 23 (as shown in the middle dimension L1) and the fourth through hole 23 (as shown in the middle dimension L1). Figure 2 The dimensions (as shown in L2) are equal to and both larger than the dimensions of the chain along the first direction (e.g., ...). Figure 3 As shown in the middle dimension L3), the first through hole 15 and the third through hole 21 are located outside the chain along the first direction, and the second through hole 16 and the fourth through hole 23 are located outside the chain along the first direction, thereby facilitating the locking of the first clamping piece 7 and the second clamping piece 9 by the first locking assembly 11 and the second locking assembly 14.

[0048] Optionally, when manufacturing this device, both the first connecting rod 17 and the second connecting rod 24 can be screws, and correspondingly, the nuts of the two screws serve as the first limiting protrusion 18 and the second limiting protrusion 25, respectively.

[0049] Optionally, the first external thread and the second external thread have the same helical direction.

[0050] Optionally, the outer diameter of the first connecting rod 17 is equal to the outer diameter of the second connecting rod 24, and the diameters of the first through hole 15, the second through hole 16, the third through hole 21, and the fourth through hole 23 are all equal and larger than the outer diameters of the first connecting rod 17 and / or the second connecting rod 24, so that the first connecting rod 17 and the second connecting rod 24 can be quickly inserted into each through hole.

[0051] Optionally, both the first clamping plate 7 and the second clamping plate 9 are made of stainless steel. On one hand, since oil contains a certain amount of moisture, using stainless steel can prevent corrosion of the first clamping plate 7 and the second clamping plate 9, thereby increasing the service life of the comb teeth 4 and the cleaning needles 6. On the other hand, since the transmission chain itself is quite heavy, a large force is required to close the two ends of the chain; using stainless steel can improve the structural strength of the device, thereby reducing safety hazards.

[0052] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A chain closing device for connecting a first end and a second end of a chain, the chain comprising a plurality of pins and a plurality of inner and outer chain plates arranged alternately along the extension direction of the chain, each inner chain plate having a bushing at both ends, and each outer chain plate having a mounting hole at both ends, the pins passing through the mounting holes and inserted into the bushings to hinge adjacent outer and inner chain plates, characterized in that... The chain closing device includes: A first clamping piece extends along a first direction, and a first clamping surface is provided in the middle of the first clamping piece; The second clamping piece extends along the first direction and is spaced apart from the first clamping piece along the second direction, the second direction being perpendicular to the first direction. The second clamping piece has a second clamping surface in the middle, and the first clamping surface and the second clamping surface are disposed opposite to each other. The first locking component is connected to the first end of the first clamping piece and the first end of the second clamping piece, respectively; The second locking component is connected to the second end of the first clamping piece and the second end of the second clamping piece, respectively; The first locking component and the second locking component are used to provide opposing clamping forces to the first clamping piece and the second clamping piece, so that the first clamping surface contacts the circumferential surface of the bushing at the first end of the chain, and the second clamping surface contacts the circumferential surface of the bushing at the second end of the chain.

2. The chain closing device as described in claim 1, characterized in that, The first clamping piece has a first through hole at its first end, and the second clamping piece has a second through hole at its first end. Both the first through hole and the second through hole extend along the second direction. The first locking component includes: A first connecting rod passes through the first through hole and the second through hole along the second direction. One end of the first connecting rod is provided with a first limiting protrusion, and the other end of the first connecting rod is provided with a first external thread. The first nut is threadedly connected to the first external thread, and the first limiting protrusion and the first nut are located on both sides of the first clamping piece and the second clamping piece along the second direction, respectively.

3. The chain closing device as described in claim 2, characterized in that, The second end of the first clamping piece is provided with a third through hole, and the second end of the second clamping piece is provided with a fourth through hole. Both the third through hole and the fourth through hole extend along the second direction. The first locking component includes: The second connecting rod passes through the third through hole and the fourth through hole along the second direction. One end of the second connecting rod is provided with a second limiting protrusion, and the other end of the second connecting rod is provided with a second external thread. The second nut is threadedly connected to the second external thread, and the second limiting protrusion and the second nut are located on both sides of the first clamping piece and the second clamping piece respectively along the second direction.

4. The chain closing device as described in claim 3, characterized in that, Both the first clamping surface and the second clamping surface are arc-shaped surfaces.

5. The chain closing device as described in claim 4, characterized in that, The radius of the arc-shaped surface is greater than or equal to the radius of the bushing.

6. The chain closing device as described in claim 3, characterized in that, The minimum distance between the first through hole and the third through hole, and the minimum distance between the second through hole and the fourth through hole are equal and both greater than the dimension of the chain along the first direction.

7. The chain closing device as described in claim 3, characterized in that, Both the first connecting rod and the second connecting rod are screw rods, and both the first limiting protrusion and the second limiting protrusion are nuts.

8. The chain closing device as described in claim 3, characterized in that, The first external thread and the second external thread have the same helical direction.

9. The chain closing device as described in claim 3, characterized in that, The outer diameter of the first connecting rod is equal to the outer diameter of the second connecting rod. The diameters of the first through hole, the second through hole, the third through hole, and the fourth through hole are all equal and greater than the outer diameters of the first connecting rod and / or the second connecting rod.

10. The chain closing device as described in claim 1, characterized in that, Both the first clamping piece and the second clamping piece are made of stainless steel.

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