A chain guide, a chain-type manual device, and a winch-type power equipment

Abstract

This invention relates to a chain guide, a chain-type manual operating device, and a winch-type power equipment. The chain guide includes a fixing structure for securing it to a frame, and two guide holes for the two sides of a suspended annular chain to pass through. The chain guide has lateral openings communicating with each guide hole, allowing the sides of the annular chain to be inserted into the guide holes. The center distance between the two guide holes is less than the diameter of the sprocket meshing with the annular chain. This invention effectively solves the problems of chain skipping and slippage in existing chain-type manual operating devices.

Description

Technical Field

[0001] This invention relates to a chain guide, a chain-type manual device, and a winch-type power equipment, belonging to the technical field of chains and winch-type power equipment. Background Technology

[0002] Manual operation is an essential function for electromechanical equipment, especially lifting equipment. In existing technology, when a sudden power outage occurs, it is necessary to lower the suspended object from the lifting equipment to a safe area to eliminate safety hazards. This is particularly important for hazardous chemicals, as prolonged suspension poses a significant safety risk. Therefore, it is necessary to add a manual device to the power unit of the lifting equipment. This device would allow manual operation of the power unit in the event of a sudden power outage, enabling the lowering of the suspended object to a safe area and facilitating emergency response.

[0003] In the field of marine lifting equipment, the installation of lifting equipment often faces the constraint of limited cabin space, requiring flexible equipment arrangement to improve the utilization of cabin space. This makes the installation method of power equipment inside the cabin different from that in ordinary land workshops. In order to avoid occupying the floor space inside the cabin, the power equipment usually needs to be installed in the air. However, this installation method inevitably leads to situations where manual emergency operation is required, which necessitates climbing to a height. Moreover, when the ship is in a rolling state, climbing to a height is not only inefficient but also a dangerous action.

[0004] To address the aforementioned issues, existing technologies typically incorporate manual control devices such as handwheel rope operating mechanisms or chain-type manual operating mechanisms at the manual input end of suspended power equipment. Handwheel rope operating mechanisms rely primarily on the interaction of ropes and pulleys to achieve manual operation, while chain-type manual operating mechanisms rely on the interaction of sprockets and chains. However, a problem exists: handwheel rope operating mechanisms experience slippage under high torque, making them unsuitable for rapid operation under heavy loads. Even with chain-type manual operating mechanisms, chain slippage and skipping occur during rapid, unilateral pulling in practical applications. Summary of the Invention

[0005] The purpose of this invention is to provide a chain guide to solve the problems of chain skipping and slippage that are common in existing chain-type manual operating devices; the purpose of this invention is also to provide a chain-type manual device and a winch-type power equipment to solve the above problems.

[0006] To achieve the above objectives, the chain guide in this invention adopts the following technical solution:

[0007] A chain guide includes a fixing structure for fixing to a frame, and two guide holes for the two sides of a suspended annular chain to pass through. The chain guide has lateral openings communicating with each guide hole so that the sides of the annular chain can be inserted into the guide holes. The center distance between the two guide holes is smaller than the diameter of the sprocket that meshes with the annular chain.

[0008] The beneficial effects of the above technical solution are as follows: The chain guide component fixed to the frame by the fixed structure in this invention includes two guide holes for the two sides of the suspended annular chain to pass through, and also has lateral openings communicating with each guide hole. In this way, the two sides of the suspended annular chain can be installed in the corresponding guide holes through the lateral openings. In addition, since the center distance between the two guide holes is smaller than the diameter of the sprocket meshing with the annular chain, the chain guide component guides the chain while the two guide holes can constrain the corresponding sides, preventing the two sides from expanding outward along the radial direction of the sprocket. This increases the transmission wrap angle between the suspended annular chain and the sprocket, thereby avoiding tooth skipping and slippage under high-speed rotation of the chain and sprocket, and ensuring the normal engagement of the sprocket and chain.

[0009] Furthermore, the chain guide includes a guide plate with an outward-facing opening groove. The opening groove has two oppositely arranged groove sidewalls located between two guide holes. The space between the two groove sidewalls forms an installation space for inserting the chain. The lateral opening is formed on the groove sidewall.

[0010] The beneficial effects of the above technical solution are as follows: By setting the two lateral openings on the two sidewalls of the slot respectively, when the two sides of the suspended annular chain are installed into the corresponding guide holes, the two sides can smoothly enter the corresponding guide holes by their respective outward expansion trend. After the two sides are installed in the corresponding guide holes, since the direction of the outward expansion trend of the sides is opposite to the direction of the corresponding lateral opening, it can also prevent the sides from exiting the guide ring hole through the lateral opening, thus ensuring the stability of the sides installed in the guide hole. In addition, the installation space formed by the two sidewalls of the slot also facilitates the installation of the sides.

[0011] Furthermore, the opening groove is U-shaped.

[0012] The advantages of the above technical solution are: it can increase the installation space, further facilitate the installation of the two sides of the suspended ring chain, and also facilitate the processing and manufacturing of the opening groove.

[0013] Furthermore, the chain guide includes a guide plate and two sleeves fixed on the guide plate, the guide hole being formed by the inner hole of the sleeve, and the lateral opening being provided on the guide plate and the sleeve.

[0014] The beneficial effects of the above technical solution are as follows: the guide hole formed by the inner hole of the sleeve increases the axial dimension of the guide hole, which in turn increases the guiding length of the guide hole to the side of the suspended annular chain, thus further ensuring the guiding effect of the guide hole on the side. In addition, since the contact area between the inner wall of the guide hole and the side is increased, the wear caused by the inner wall of the guide hole to the side can also be reduced.

[0015] Furthermore, the upper and lower openings of the inner hole of the sleeve are respectively provided with chamfers.

[0016] The beneficial effects of the above technical solution are as follows: by chamfering, interference between the upper and lower openings of the inner hole of the sleeve and the side of the suspended ring chain can be avoided, thereby reducing chain wear and extending the service life of the suspended ring chain.

[0017] Furthermore, the chain guide also includes two sleeves fixed to the guide plate, the guide hole being formed by the inner hole of the sleeve, and the lateral opening being provided on the guide plate and the sleeve.

[0018] The beneficial effects of the above technical solution are as follows: the guide hole formed by the inner hole of the sleeve increases the axial dimension of the guide hole, which in turn increases the guiding length of the guide hole to the side of the suspended annular chain, thus further ensuring the guiding effect of the guide hole on the side. In addition, since the contact area between the inner wall of the guide hole and the side is increased, the wear caused by the inner wall of the guide hole to the side can also be reduced.

[0019] Furthermore, the upper and lower openings of the inner holes of the two sleeves fixed on the guide plate are respectively provided with chamfers.

[0020] The beneficial effects of the above technical solution are as follows: by chamfering, interference between the upper and lower openings of the inner hole of the sleeve and the side of the suspended ring chain can be avoided, thereby reducing chain wear and extending the service life of the suspended ring chain.

[0021] Furthermore, the chain guide also includes a fixing plate that is perpendicularly connected to the guide plate, wherein the fixing structure is a bolt hole set on the fixing plate.

[0022] The beneficial effects of the above technical solution are that it facilitates the installation and fixing of the chain guide and the frame, and also facilitates the disassembly and replacement of the chain guide.

[0023] To achieve the above objectives, the chain-type manual device of the present invention adopts the following technical solution:

[0024] A chain-type manual device includes a sprocket and a suspended annular chain meshing with the sprocket. The chain-type manual device also includes a chain guide, which includes a fixing structure for fixing to a frame and two guide holes for two sides of the suspended annular chain to pass through. The chain guide has lateral openings communicating with each guide hole so that the sides of the annular chain can be inserted into the guide holes. The center distance between the two guide holes is smaller than the diameter of the sprocket meshing with the annular chain.

[0025] The beneficial effects of the above technical solution are as follows: In the chain manual device of the present invention, since the chain guide fixed to the frame by the fixed structure includes two guide holes for the two sides of the suspended annular chain to pass through, and since it is also provided with lateral openings communicating with each guide hole, the two sides of the suspended annular chain can be installed in the corresponding guide holes through the lateral openings respectively. In addition, since the center distance between the two guide holes is smaller than the diameter of the sprocket meshing with the annular chain, the chain guide guides the chain while the two guide holes can constrain the corresponding sides respectively, preventing the two sides from expanding outward along the radial direction of the sprocket, increasing the transmission wrap angle between the suspended annular chain and the sprocket, thereby avoiding the phenomena of tooth skipping and slippage under high-speed rotation of the chain and sprocket, ensuring the normal engagement of the sprocket and chain, and greatly improving the operating efficiency of the chain manual device.

[0026] Furthermore, the chain guide includes a guide plate with an outward-facing opening groove. The opening groove has two oppositely arranged groove sidewalls located between two guide holes. The space between the two groove sidewalls forms an installation space for inserting the chain. The lateral opening is formed on the groove sidewall.

[0027] The beneficial effects of the above technical solution are as follows: By setting the two lateral openings on the two sidewalls of the slot respectively, when the two sides of the suspended annular chain are installed into the corresponding guide holes, the two sides can smoothly enter the corresponding guide holes by their respective outward expansion trend. After the two sides are installed in the corresponding guide holes, since the direction of the outward expansion trend of the sides is opposite to the direction of the corresponding lateral opening, it can also prevent the sides from exiting the guide ring hole through the lateral opening, thus ensuring the stability of the sides installed in the guide hole. In addition, the installation space formed by the two sidewalls of the slot also facilitates the installation of the sides.

[0028] Furthermore, the opening groove is U-shaped.

[0029] The advantages of the above technical solution are: it can increase the installation space, further facilitate the installation of the two sides of the suspended ring chain, and also facilitate the processing and manufacturing of the opening groove.

[0030] Furthermore, the chain guide includes a guide plate and two sleeves fixed on the guide plate, the guide hole being formed by the inner hole of the sleeve, and the lateral opening being provided on the guide plate and the sleeve.

[0031] The beneficial effects of the above technical solution are as follows: the guide hole formed by the inner hole of the sleeve increases the axial dimension of the guide hole, which in turn increases the guiding length of the guide hole to the side of the suspended annular chain, thus further ensuring the guiding effect of the guide hole on the side. In addition, since the contact area between the inner wall of the guide hole and the side is increased, the wear caused by the inner wall of the guide hole to the side can also be reduced.

[0032] Furthermore, the upper and lower openings of the inner hole of the sleeve are respectively provided with chamfers.

[0033] The beneficial effects of the above technical solution are as follows: by chamfering, interference between the upper and lower openings of the inner hole of the sleeve and the side of the suspended ring chain can be avoided, thereby reducing chain wear and extending the service life of the suspended ring chain.

[0034] Furthermore, the chain guide also includes two sleeves fixed to the guide plate, the guide hole being formed by the inner hole of the sleeve, and the lateral opening being provided on the guide plate and the sleeve.

[0035] The beneficial effects of the above technical solution are as follows: the guide hole formed by the inner hole of the sleeve increases the axial dimension of the guide hole, which in turn increases the guiding length of the guide hole to the side of the suspended annular chain, thus further ensuring the guiding effect of the guide hole on the side. In addition, since the contact area between the inner wall of the guide hole and the side is increased, the wear caused by the inner wall of the guide hole to the side can also be reduced.

[0036] Furthermore, the upper and lower openings of the inner holes of the two sleeves fixed on the guide plate are respectively provided with chamfers.

[0037] The beneficial effects of the above technical solution are as follows: by chamfering, interference between the upper and lower openings of the inner hole of the sleeve and the side of the suspended ring chain can be avoided, thereby reducing chain wear and extending the service life of the suspended ring chain.

[0038] Furthermore, the chain guide also includes a fixing plate that is perpendicularly connected to the guide plate, wherein the fixing structure is a bolt hole set on the fixing plate.

[0039] The beneficial effects of the above technical solution are that it facilitates the installation and fixing of the chain guide and the frame, and also facilitates the disassembly and replacement of the chain guide.

[0040] To achieve the above objectives, the winch-type power equipment of the present invention adopts the following technical solution:

[0041] A winch-type power device includes a frame and a chain-type manual device mounted on the frame. The chain-type manual device includes a sprocket and a suspended annular chain meshing with the sprocket. The chain-type manual device also includes a chain guide, which includes a fixing structure for fixing to the frame and two guide holes for the two sides of the suspended annular chain to pass through. The chain guide has lateral openings communicating with each guide hole so that the sides of the annular chain can be inserted into the guide holes. The center distance between the two guide holes is smaller than the diameter of the sprocket meshing with the annular chain.

[0042] The beneficial effects of the above technical solution are as follows: In the winch-type power equipment of the present invention, since the chain guide fixed to the frame by the fixed structure includes two guide holes for the two sides of the suspended annular chain to pass through, and since it is also provided with lateral openings communicating with each guide hole, the two sides of the suspended annular chain can be installed in the corresponding guide holes through the lateral openings respectively. In addition, since the center distance between the two guide holes is smaller than the diameter of the sprocket meshing with the annular chain, the chain guide guides the chain while the two guide holes can constrain the corresponding sides respectively, preventing the two sides from expanding outward along the radial direction of the sprocket, increasing the transmission wrap angle between the suspended annular chain and the sprocket, thereby avoiding tooth skipping and slippage under high-speed rotation of the chain and sprocket, ensuring the normal engagement of the sprocket and chain, greatly improving the operating efficiency of the chain manual device, and thus ensuring the manual operation and operating efficiency of the winch-type power equipment.

[0043] Furthermore, the chain guide includes a guide plate with an outward-facing opening groove. The opening groove has two oppositely arranged groove sidewalls located between two guide holes. The space between the two groove sidewalls forms an installation space for inserting the chain. The lateral opening is formed on the groove sidewall.

[0044] The beneficial effects of the above technical solution are as follows: By setting the two lateral openings on the two sidewalls of the slot respectively, when the two sides of the suspended annular chain are installed into the corresponding guide holes, the two sides can smoothly enter the corresponding guide holes by their respective outward expansion trend. After the two sides are installed in the corresponding guide holes, since the direction of the outward expansion trend of the sides is opposite to the direction of the corresponding lateral opening, it can also prevent the sides from exiting the guide ring hole through the lateral opening, thus ensuring the stability of the sides installed in the guide hole. In addition, the installation space formed by the two sidewalls of the slot also facilitates the installation of the sides.

[0045] Furthermore, the opening groove is U-shaped.

[0046] The advantages of the above technical solution are: it can increase the installation space, further facilitate the installation of the two sides of the suspended ring chain, and also facilitate the processing and manufacturing of the opening groove.

[0047] Furthermore, the chain guide includes a guide plate and two sleeves fixed on the guide plate, the guide hole being formed by the inner hole of the sleeve, and the lateral opening being provided on the guide plate and the sleeve.

[0048] The beneficial effects of the above technical solution are as follows: the guide hole formed by the inner hole of the sleeve increases the axial dimension of the guide hole, which in turn increases the guiding length of the guide hole to the side of the suspended annular chain, thus further ensuring the guiding effect of the guide hole on the side. In addition, since the contact area between the inner wall of the guide hole and the side is increased, the wear caused by the inner wall of the guide hole to the side can also be reduced.

[0049] Furthermore, the upper and lower openings of the inner hole of the sleeve are respectively provided with chamfers.

[0050] The beneficial effects of the above technical solution are as follows: by chamfering, interference between the upper and lower openings of the inner hole of the sleeve and the side of the suspended ring chain can be avoided, thereby reducing chain wear and extending the service life of the suspended ring chain.

[0051] Furthermore, the chain guide also includes two sleeves fixed to the guide plate, the guide hole being formed by the inner hole of the sleeve, and the lateral opening being provided on the guide plate and the sleeve.

[0052] The beneficial effects of the above technical solution are as follows: the guide hole formed by the inner hole of the sleeve increases the axial dimension of the guide hole, which in turn increases the guiding length of the guide hole to the side of the suspended annular chain, thus further ensuring the guiding effect of the guide hole on the side. In addition, since the contact area between the inner wall of the guide hole and the side is increased, the wear caused by the inner wall of the guide hole to the side can also be reduced.

[0053] Furthermore, the upper and lower openings of the inner holes of the two sleeves fixed on the guide plate are respectively provided with chamfers.

[0054] The beneficial effects of the above technical solution are as follows: by chamfering, interference between the upper and lower openings of the inner hole of the sleeve and the side of the suspended ring chain can be avoided, thereby reducing chain wear and extending the service life of the suspended ring chain.

[0055] Furthermore, the chain guide also includes a fixing plate that is perpendicularly connected to the guide plate, wherein the fixing structure is a bolt hole set on the fixing plate.

[0056] The beneficial effects of the above technical solution are that it facilitates the installation and fixing of the chain guide and the frame, and also facilitates the disassembly and replacement of the chain guide. Attached Figure Description

[0057] Figure 1 This is a side view of the winch-type power equipment in this invention;

[0058] Figure 2 This is a front view of the chain manual device in the winch-type power equipment of the present invention;

[0059] Figure 3 yes Figure 2 Side view;

[0060] Figure 4 yes Figure 2 Top view of the middle chain guide;

[0061] Figure 5 yes Figure 2 Enlarged view of section A.

[0062] In the diagram: 100, main body; 200, chain-type manual device; 210, sprocket; 220, suspended ring chain; 221, side; 230, chain guide; 231, fixing plate; 232, guide plate; 233, opening groove; 234, groove sidewall; 235, sleeve; 236, guide hole; 237, chamfer; 238, first lateral opening; 239, second lateral opening; 240, fixing bolt. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0064] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0065] It should be noted that, in specific embodiments of the present invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the use of phrases such as "comprising a…" to define an element does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0066] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" 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, or 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.

[0067] In the description of this invention, unless otherwise explicitly specified and limited, the term "provided with" should be interpreted broadly. For example, the object "provided with" can be a part of the body, or it can be separately arranged from the body and connected to the body. This connection can be a detachable connection or a non-detachable connection. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0068] The present invention will be further described in detail below with reference to the embodiments.

[0069] Embodiment 1 of the winch-type power equipment in this invention:

[0070] like Figure 1 As shown, the winch-type power equipment includes a main body 100, a frame, and a chain-type manual device 200 mounted on the frame. In this embodiment, the frame is formed by the shell of the main body 100. In other embodiments, the frame may also be formed by a mounting frame for mounting and fixing the main body 100. Figure 2 and Figure 3 As shown, the chain-type manual device 200 includes a sprocket 210 and a suspended annular chain 220 that meshes with the sprocket 210. The sprocket 210 is connected to the manual input end of the main body 100, and the suspended annular chain 220 has two suspended sides 221.

[0071] like Figure 2 , Figure 3 as well as Figure 4 As shown, the chain-type manual device 200 also includes a chain guide 230, which is fixedly mounted on the frame and located directly below the sprocket 210. The chain guide 230 includes a horizontally arranged guide plate 232 and a fixing plate 231 vertically connected to the guide plate 232. The fixing plate 231 has two bolt holes for fixing to the frame using fixing bolts 240, and the bolt holes constitute the fixing structure for fixing the fixing plate 231 to the frame.

[0072] like Figure 4 As shown, the chain guide 230 also includes two sleeves 235 arranged at left and right intervals fixed on the guide plate 232. Specifically, both sleeves 235 penetrate the guide plate 232 in the vertical direction, and the inner holes of the two sleeves 235 respectively form guide holes 236 for the two sides 221 to pass through. The center distance between the two guide holes 236 is smaller than the diameter of the sprocket 210. Figure 5 As shown, both guide holes 236 have an upper opening and a lower opening, and both the upper and lower openings are provided with chamfers 237. The chamfers 237 can avoid interference between the upper and lower openings and the side 221, thereby reducing chain wear and extending the service life of the suspended ring chain 220.

[0073] like Figure 4 As shown, the guide plate 232 has a U-shaped U-shaped U-shaped opening groove 233 located between two sleeves 235 and between two guide holes 236. The opening groove 233 has two opposite sidewalls 234. To facilitate the installation of the two sides 221 into the corresponding guide holes 236, both the guide plate 232 and the sleeves 235 have lateral openings that communicate with each guide hole 236. Specifically, as shown... Figure 4As shown, the lateral opening includes a first lateral opening 238 disposed on the guide plate 232 and a second lateral opening 239 disposed on the sleeve 235, wherein the first lateral opening 238 is disposed on the groove sidewall 234. When the two sides 221 are installed into the corresponding guide holes 236, the two sides 221 located between the two groove sidewalls 234 can enter the corresponding guide holes 236 by means of their respective outward expansion tendency and through the corresponding first lateral opening 238 and second lateral opening 239. After the two sides 221 are installed in the corresponding guide holes 236, since the direction of the outward expansion tendency of the sides 221 is opposite to the direction of the corresponding lateral opening, it can also prevent the sides 221 from exiting the guide ring hole through the lateral opening, thus ensuring the stability of the sides 221 installed in the guide holes 236. In addition, the space between the two groove sidewalls 234 of the opening groove 233 forms an installation space for inserting the chain.

[0074] In the winch-type power equipment of the present invention, the chain guide includes two guide holes for the two sides of the suspended annular chain to pass through, and also has lateral openings communicating with each guide hole. Thus, the two sides of the suspended annular chain can be installed in the corresponding guide holes through the lateral openings. Furthermore, since the center distance between the two guide holes is smaller than the diameter of the sprocket meshing with the annular chain, the chain guide guides the chain while the two guide holes constrain the corresponding sides, preventing them from expanding radially outward along the sprocket. This increases the transmission wrap angle between the suspended annular chain and the sprocket, thereby avoiding tooth skipping and slippage under high-speed chain and sprocket rotation, ensuring normal chain-sprocket engagement, greatly improving the operating efficiency of the chain-type manual device, and thus ensuring the manual operation and efficiency of the winch-type power equipment.

[0075] In other embodiments of the winch-type power equipment, the fixing structure may not be bolt holes on the fixing plate, but rather the plate surface where the fixing plate contacts the frame, and the fixing plate is welded to the frame. Alternatively, in other embodiments, the fixing structure may be welded studs that are welded to the fixing plate.

[0076] In other embodiments of the winch-type power equipment, the chain guide may not include a fixing plate; the guide plate is directly welded and fixed to the frame, and the fixing structure in this case is the end face of the guide plate to be welded.

[0077] In other embodiments of the winch-type power equipment, the upper and lower openings of the inner hole of the sleeve are not chamfered.

[0078] In other embodiments of the winch-type power equipment, the guide plate may not be fixed with a sleeve, that is, the guide hole is not formed by the inner hole of the sleeve, but directly by a through hole provided on the guide plate.

[0079] In other embodiments of the winch-type power equipment, the opening slot may not be U-shaped, but rather arc-shaped. In other embodiments, it may also be dovetail-shaped, trapezoidal, or triangular, etc.

[0080] In other embodiments of the winch-type power equipment, regardless of whether there is a sleeve on the guide plate, the lateral opening may not be provided on the side wall of the slot, but on the front side wall of the guide plate, and in this case, the guide plate may not have an opening slot.

[0081] An embodiment of the chain manual device in this invention: The specific structure of the chain manual device is the same as that of the chain manual device in the above-described hoist-type power equipment embodiment, and will not be repeated here.

[0082] An embodiment of the chain guide in this invention: The specific structure of the chain guide is the same as that of the chain guide in the above-described hoisting power equipment embodiment, and will not be repeated here.

[0083] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A chain guide, characterized in that, The system includes a fixing structure for fixing to a frame, and two guide holes (236) for the two sides (221) of a suspended annular chain (220) to pass through. The chain guide (230) is provided with lateral openings communicating with each guide hole (236) so that the side (221) of the annular chain can be inserted into the guide hole (236). When in use, the center distance between the two guide holes (236) is smaller than the diameter of the sprocket (210) that meshes with the annular chain. The chain guide includes a guide plate with an outward-facing opening groove. The opening groove has two groove sidewalls that are opposite to each other and located between the two guide holes. The space between the two groove sidewalls forms an installation space for inserting the chain. Lateral openings are provided on the two groove sidewalls respectively.

2. The chain guide according to claim 1, characterized in that, The opening groove is arc-shaped, dovetail-shaped, trapezoidal, or triangular.

3. The chain guide according to claim 1, characterized in that, The opening groove (233) is U-shaped.

4. The chain guide according to any one of claims 1 to 3, characterized in that, The chain guide also includes two sleeves (235) fixed on the guide plate (232), the guide hole (236) is formed by the inner hole of the sleeve (235), and both the guide plate (232) and the sleeve (235) are provided with lateral openings.

5. The chain guide according to claim 4, characterized in that, The upper and lower openings of the inner hole of the sleeve (235) are respectively provided with chamfers (237).

6. The chain guide according to claim 4, characterized in that, The upper and lower ends of the sleeve protrude from the top and bottom surfaces of the guide plate, respectively.

7. The chain guide according to any one of claims 1 to 3, characterized in that, The chain guide (230) also includes a fixing plate (231) that is perpendicularly connected to the guide plate (232), the fixing structure being a welded stud on the fixing plate.

8. The chain guide according to any one of claims 1 to 3, characterized in that, The chain guide (230) also includes a fixing plate (231) that is perpendicularly connected to the guide plate (232), the fixing structure being bolt holes provided on the fixing plate (231).

9. A chain-type manual device, comprising a sprocket (210) and a suspended annular chain (220) engaged with the sprocket (210), characterized in that, The chain-type manual device also includes a chain guide, which includes a fixing structure for fixing to the frame and two guide holes (236) for the two sides (221) of the suspended ring chain (220) to pass through. The chain guide (230) is provided with lateral openings communicating with each guide hole (236) so that the side (221) of the ring chain can be inserted into the guide hole (236). The center distance between the two guide holes (236) is smaller than the diameter of the sprocket (210). The chain guide includes a guide plate with an outward-facing opening groove. The opening groove has two groove sidewalls that are opposite to each other and located between the two guide holes. The space between the two groove sidewalls forms an installation space for inserting the chain. Lateral openings are respectively provided on the two groove sidewalls.

10. The chain-type manual device according to claim 9, characterized in that, The opening groove is arc-shaped, dovetail-shaped, trapezoidal, or triangular.

11. The chain-type manual device according to claim 9, characterized in that, The opening groove (233) is U-shaped.

12. The chain-type manual device according to any one of claims 9 to 11, characterized in that, The chain guide also includes two sleeves (235) fixed on the guide plate (232), the guide hole (236) is formed by the inner hole of the sleeve (235), and both the guide plate (232) and the sleeve (235) are provided with lateral openings.

13. The chain-type manual device according to claim 12, characterized in that, The upper and lower openings of the inner hole of the sleeve (235) are respectively provided with chamfers (237).

14. The chain-type manual device according to claim 12, characterized in that, The upper and lower ends of the sleeve protrude from the top and bottom surfaces of the guide plate, respectively.

15. The chain-type manual device according to any one of claims 9 to 11, characterized in that, The chain guide (230) also includes a fixing plate (231) that is perpendicularly connected to the guide plate (232), the fixing structure being a welded stud on the fixing plate.

16. The chain-type manual device according to any one of claims 9 to 11, characterized in that, The chain guide (230) also includes a fixing plate (231) that is perpendicularly connected to the guide plate (232), the fixing structure being bolt holes provided on the fixing plate (231).

17. A winch-type power device, comprising a frame and a chain-type manual device (200) mounted on the frame, the chain-type manual device (200) comprising a sprocket (210) and a suspended annular chain (220) meshing with the sprocket (210), characterized in that, The chain-type manual device also includes a chain guide, which includes a fixing structure for fixing to the frame and two guide holes (236) for the two sides (221) of the suspended ring chain (220) to pass through. The chain guide (230) is provided with lateral openings communicating with each guide hole (236) so that the side (221) of the ring chain can be inserted into the guide hole (236). The center distance between the two guide holes (236) is smaller than the diameter of the sprocket (210). The chain guide includes a guide plate with an outward-facing opening groove. The opening groove has two groove sidewalls that are opposite to each other and located between the two guide holes. The space between the two groove sidewalls forms an installation space for inserting the chain. Lateral openings are respectively provided on the two groove sidewalls.

18. The winch-type power equipment according to claim 17, characterized in that, The opening groove is arc-shaped, dovetail-shaped, trapezoidal, or triangular.

19. The winch-type power equipment according to claim 17, characterized in that, The opening groove (233) is U-shaped.

20. The winch-type power equipment according to any one of claims 17 to 19, characterized in that, The chain guide also includes two sleeves (235) fixed on the guide plate (232), the guide hole (236) is formed by the inner hole of the sleeve (235), and both the guide plate (232) and the sleeve (235) are provided with lateral openings.

21. The winch-type power equipment according to claim 20, characterized in that, The upper and lower openings of the inner hole of the sleeve (235) are respectively provided with chamfers (237).

22. The winch-type power equipment according to claim 20, characterized in that, The upper and lower ends of the sleeve protrude from the top and bottom surfaces of the guide plate, respectively.

23. The winch-type power equipment according to any one of claims 17 to 19, characterized in that, The chain guide (230) also includes a fixing plate (231) that is perpendicularly connected to the guide plate (232), the fixing structure being a welded stud on the fixing plate.

24. The winch-type power equipment according to any one of claims 17 to 19, characterized in that, The chain guide (230) also includes a fixing plate (231) that is perpendicularly connected to the guide plate (232), the fixing structure being bolt holes provided on the fixing plate (231).

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