A chain tensioning auxiliary device
By designing a chain tensioning auxiliary device, the automatic tensioning of the chain is achieved using a ratchet and gear system, which solves the problem of laborious and unsatisfactory results in the existing technology and realizes a time-saving and labor-saving chain tensioning effect.
Patent Information
- Application Number
- CN202522646666.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-15
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-15
AI Technical Summary
In existing technologies, chain tensioning is laborious and ineffective, especially when loading large trucks or sealing goods in warehouses, where manual tightening of ropes or chains is required.
A chain tensioning auxiliary device was designed, including a connecting plate, a ratchet, a rotating shaft, a gear, and a tensioning wheel. The chain is automatically tensioned by the unidirectional rotation of the ratchet. Combined with the chain groove and chain guard plate, the chain is pulled out and fixed smoothly.
It achieves time-saving and labor-saving chain tensioning, improves tensioning effect, and reduces the labor intensity of manual operation.
Smart Images
Figure CN224941408U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chain tensioning technology, and in particular to a chain tensioning auxiliary device. Background Technology
[0002] When loading large trucks or sealing goods in warehouses, ropes are needed to tighten them to prevent the goods from loosening. In other situations where chains need to be used directly for tightening, current technology mostly involves manual tightening, which is laborious and the tightening effect is not ideal. Utility Model Content
[0003] To solve the above-mentioned technical problems, this application provides a chain tensioning auxiliary device, which is achieved through the following technical solution: A chain tensioning auxiliary device includes a first connecting plate and a second connecting plate opposite to it. The first connecting plate and the second connecting plate are fixedly connected by several bolts. A ratchet is provided on the outer side of the first connecting plate, and the ratchet is connected to a rotating shaft. The rotating shaft is connected to the first connecting plate and the second connecting plate by bearings. The rotating shaft passes through the second connecting plate and connects to a first gear. The first gear meshes with the large gear of a double gear. The double gear also includes a small gear, which meshes with the second gear. The second gear is connected to a tensioning mechanism. The tensioning mechanism includes a first rotating shaft, which is fixedly connected to the second gear. The second rotating shaft is connected to the first connecting plate and the second connecting plate by bearings. A tensioning wheel is fixedly connected to the portion of the first rotating shaft that is positioned between the first connecting plate and the second connecting plate. The surface of the tensioning wheel has chain grooves arranged in a circumferential array. An arc-shaped chain guard is provided below the tensioning wheel. A chain clamp is provided on the upper left side of the tensioning wheel. The chain clamp is inclined and fixedly connected between the first connecting plate and the second connecting plate.
[0004] As a preferred embodiment, a pawl is provided on one side of the ratchet, and the pawl is connected to a connecting plate.
[0005] As a preferred embodiment, a wrench block is fixedly provided on the portion of the rotating shaft outside the ratchet.
[0006] As a preferred embodiment, the double gear is connected to the connecting plate 2 via a rotating shaft 2. A bearing 2 is provided at the connection between the rotating shaft 2 and the connecting plate 2. The other end of the double gear is connected to a fixed plate via a bearing 3. Both ends of the fixed plate are fixedly connected to the extension rods of two adjacent bolts.
[0007] Compared with the prior art, the beneficial effects of this utility model are: by continuously rotating the tensioning wheel counterclockwise, the chain is continuously pulled out from between the tensioning wheel and the chain guard plate, thereby achieving tension on the chain, and thus achieving tension on the rope or other medium connected to the chain. The tensioning effect is good, and it saves time and effort. Attached Figure Description
[0008] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 ; Figure 3 This is a top view schematic diagram of the tensioning chain structure of this utility model; Figure 4 This is a three-dimensional structural diagram of the present invention without the fixing plate; Figure 5 This is a schematic diagram of the three-dimensional structure of the tensioning wheel of this utility model. Detailed Implementation
[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: A chain tensioning auxiliary device includes a connecting plate 1 and a connecting plate 2 opposite to it. The connecting plate 1 and the connecting plate 2 are fixedly connected by several bolts 3. A ratchet 4 is provided on the outer side of the connecting plate 1. The ratchet 4 is fixedly connected to a rotating shaft 5. The rotating shaft 5 is connected to the connecting plate 1 and the connecting plate 2 respectively through bearings 6. The rotating shaft 5 passes through the connecting plate 2 and connects to a gear 7. The gear 7 meshes with a large gear 81 of a double gear 8. The double gear 8 also includes a small gear 82, which meshes with a gear 9. The gear 9 is connected to a tensioning mechanism 10. The tensioning mechanism 10 includes a rotating shaft 11, which is fixedly connected to a gear 9. The rotating shaft 11 is connected to a connecting plate 1 and a connecting plate 2 via bearings 12. A tensioning wheel 13 is fixedly connected to the portion of the rotating shaft 11 that is positioned on the connecting plate 1 and the connecting plate 2. The surface of the tensioning wheel 13 is provided with chain grooves 14 arranged in a circular array. An arc-shaped chain guard plate 15 is provided below the tensioning wheel 13. A chain clamping plate 16 is provided on the upper left side of the tensioning wheel 13. The chain clamping plate 16 is inclined and fixedly connected between the connecting plate 1 and the connecting plate 2.
[0010] Furthermore, a pawl 17 is provided on one side of the ratchet 4, and the pawl 17 is connected to the connecting plate 1.
[0011] Furthermore, a wrench block 18 is fixedly provided on the portion of the rotating shaft 5 outside the ratchet 4.
[0012] Furthermore, the double gear 8 is connected to the connecting plate 2 via a rotating shaft 2 19. A bearing 20 is provided at the connection between the rotating shaft 2 19 and the connecting plate 2. The other end of the double gear 8 is connected to a fixed plate 22 via a bearing 3 21. Both ends of the fixed plate 22 are fixedly connected to the extension rods 23 of two adjacent bolts 3.
[0013] When using this chain tensioning auxiliary device, the chain 25 is hooked onto one end of the rope or other medium that needs to be tensioned, and the other end of the chain 25 passes between the tensioning wheel 13 and the chain guard plate 15 from the left. The shape of the chain groove 14 opened on the surface of the tensioning wheel 13 is consistent with the shape of the chain 25 longitudinally cut from the middle, ensuring that the chain 25 no longer moves freely after passing through the chain groove 14 and the chain guard plate 15.
[0014] When performing tensioning operations, such as Figure 3 As shown, a bolt 3 on the right side is connected to one end of an auxiliary tensioning chain 24. After the auxiliary tensioning chain 24 is stretched flat, the other end is fixed. A wrench is placed on the wrench block 18, and the wrench is rotated to make the ratchet 4 rotate. The rotating shaft 5 and the connecting gear 7 connected to it rotate synchronously. When gear 7 rotates, the large gear 81 of the double gear 8 meshing with it rotates. When the large gear 81 rotates, the double gear 8 rotates as a whole, that is, the small gear 82 of the double gear 8 also rotates. Then the gear 9 meshing with the small gear 82 rotates, and the tensioning mechanism 10 connected to the gear 9 rotates, that is, the tensioning wheel 13 rotates. As the tensioning wheel 13 rotates, the chain stuck between the chain groove 14 and the chain guard plate 15 rotates accordingly. The chain 25 that rotates out comes out from the other end of the chain guard plate 15. As the tensioning wheel 13 rotates counterclockwise continuously, the chain is pulled out one link at a time from between the tensioning wheel 13 and the chain guard plate 15, thus achieving tensioning of the chain 25.
[0015] The pawl 17 ensures that the ratchet 4 can only rotate in one direction, which in turn ensures the unidirectional rotation of the tension wheel 13.
[0016] The chain clamp 16 also restricts the free movement of the chain. The chain clamp 16 has a pressure lug 161 in the middle, which presses against the upper part of the chain groove 14 to restrict the up and down movement space of the chain after it enters the tension wheel 14 and the chain guard plate 15, and prevent the chain from sliding in the opposite direction of tension.
[0017] The specific implementation of this utility model has been described in detail above, but it is only an example. This utility model is not limited to the specific implementation cases described above, and equivalent modifications to this utility model are also within the protection scope of this utility model.
Claims
1. A chain tensioning auxiliary device, characterized in that, The system includes a connecting plate 1 (1) and a connecting plate 2 (2) opposite to it. The connecting plate 1 (1) and the connecting plate 2 (2) are fixedly connected by several bolts (3). A ratchet (4) is provided on the outside of the connecting plate 1 (1). The ratchet (4) is fixedly connected to a rotating shaft (5). The rotating shaft (5) is connected to the connecting plate 1 (1) and the connecting plate 2 (2) respectively through bearings (6). The rotating shaft (5) passes through the connecting plate 2 (2) and connects to a gear 1 (7). The gear 1 (7) meshes with the large gear (81) of a double gear (8). The double gear (8) also includes a small gear (82). The small gear (82) meshes with a gear 2 (9). The gear 2 (9) is connected to a tensioning mechanism (10). The tensioning mechanism (10) includes a rotating shaft (11), which is fixedly connected to a gear (9). The rotating shaft (11) is connected to a connecting plate (1) and a connecting plate (2) respectively via a bearing (12). A tensioning wheel (13) is fixedly connected to the part of the rotating shaft (11) placed on the connecting plate (1) and the connecting plate (2). The surface of the tensioning wheel (13) is provided with chain grooves (14) arranged in a circular array. An arc-shaped chain guard plate (15) is provided below the tensioning wheel (13). A chain clamp plate (16) is provided on the upper left side of the tensioning wheel (13). The chain clamp plate (16) is inclined and fixedly connected between the connecting plate (1) and the connecting plate (2).
2. The chain tensioning auxiliary device according to claim 1, characterized in that, The ratchet (4) has a pawl (17) on one side, and the pawl (17) is connected to the connecting plate (1).
3. The chain tensioning auxiliary device according to claim 1, characterized in that, The pivot (5) has a wrench block (18) fixed on the part outside the ratchet (4).
4. The chain tensioning auxiliary device according to claim 1, characterized in that, The double gear (8) is connected to the connecting plate (2) via the second rotating shaft (19). The second rotating shaft (19) and the connecting plate (2) are connected by a bearing (20). The other end of the double gear (8) is connected to a fixed plate (22) via a bearing (21). The two ends of the fixed plate (22) are fixedly connected to the extension rods (23) of two adjacent bolts (3).