A hoist chain running device facilitating maintenance

Abstract

The present application belongs to the technical field of hoist, especially to a hoist drag chain wiring device convenient to maintain, aiming at the existing wiring chuck which needs to be assembled with bearings and lifting shaft frame, increasing the number of parts, leading to the increase of device cost, at the same time, making the wiring mechanism assembly steps become cumbersome, improving the assembly difficulty, and when maintaining the electrical harness, the chain wheel needs to be removed to take out the chain to maintain the internal electrical harness, leading to the problem of inconvenient maintenance, the present application proposes the following scheme, which includes a mounting bracket composed of a horizontal part, a vertical part and a shaft part, forming an I shape, the chain wheel and the drag chain wheel are directly rotated and set on the shaft part and fixed in the axial position, which not only simplifies the manufacturing process, but also directly reduces the material cost and processing cost, at the same time, since the assembly becomes simpler, the production and assembly time is reduced, the maintenance efficiency is improved, and the production cost is further reduced.

Description

Technical Field

[0001] This invention relates to the field of hoist technology, and in particular to a hoist drag chain routing device that is easy to maintain. Background Technology

[0002] Hoists are widely used devices in the industrial field for vertical or inclined transport of materials and goods. With the increasing level of industrial automation, the performance and reliability requirements for hoists are constantly rising. During the operation of hoists, the placement and protection of cables and pipelines have become crucial considerations, leading to the development of cable drag chain systems.

[0003] Traditional cable carrier systems typically consist of a series of interconnected links forming a flexible chain used to protect and guide cables, air hoses, and liquid hoses. In mobile equipment such as hoists, the cable carrier needs to adapt to the movement of the equipment to prevent damage to the cables due to twisting, friction, or stretching during cable routing.

[0004] The earlier patent application, CN217874504U, disclosed a built-in wiring mechanism for a hoist, which places the electrical / pneumatic wiring inside the cable chain, effectively protecting the electrical / pneumatic wiring. The electrical / pneumatic wiring harness is confined between a pair of wiring chucks on the hoisting shaft frame. The position of the electrical / pneumatic wiring harness changes with the movement of the mechanism. However, the pair of wiring chucks need to be fitted with the hoisting shaft frame using bearings during assembly, which increases the number of parts and the cost of the device. At the same time, it makes the assembly process of the wiring mechanism cumbersome and increases the assembly difficulty. Furthermore, when maintaining the electrical wiring harness, the chain rollers need to be removed to take out the chain for maintenance of the internal electrical wiring harness, making maintenance very inconvenient. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the need for bearings and lifting shafts to assemble cable trays, which increases the number of parts and the cost of the device. Furthermore, the assembly process is cumbersome and difficult, and maintenance of the electrical wiring harness requires removing the chain rollers to access the internal wiring harness, making maintenance very inconvenient. Therefore, this invention proposes a maintenance-friendly cable tray device for hoists.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A maintenance-friendly hoist cable routing device includes: The mounting bracket is composed of a horizontal part, a vertical part, and a shaft part, forming an I-shape. At least one chain wheel is fitted on the shaft part for connecting with the chain on the hoist. The two ends of the shaft part are respectively provided with a first connecting shaft and a second connecting shaft that can be spliced. Both the first connecting shaft and the second connecting shaft are fitted with drag chain wheels. A cable chain, comprising a cable chain body, cable chain plates, and cable chain supports, wherein the cable chain plates are connected to the lifting frame of the hoist, the cable chain supports are connected to a slider inside the column, and the two ends of the cable chain body are fixedly connected to the cable chain plates and the cable chain supports respectively, with its middle portion wound around a cable chain wheel for guiding the cable chain. A wire harness, which is disposed within the cable chain body; The support mechanism is mounted on the mounting bracket to support the second connecting shaft on the side and to form a limiting space between the first connecting shaft and the mounting bracket.

[0007] In one possible design, the support mechanism includes multiple extension plates that are sequentially spliced ​​together. The extension plate near the mounting bracket is inserted into the mounting bracket. The bottom of the other end of the extension plate is provided with a first side plate, and the bottom of the other side of the mounting bracket is provided with a second side plate. The second side plate is connected to the other end of the shaft. The first side plate is fixedly sleeved on the corresponding second connecting shaft. The top of the mounting bracket extension plates is provided with through holes, and the top of the first side plate and the second side plate is provided with first threaded holes. Bolts are inserted through the through holes, and the bottom end of the bolts is threaded into the first threaded holes for fixing the side extension plates, the first side plates, the mounting bracket, and the second side plates together.

[0008] In one possible design, a second threaded post is fixedly provided at one end of both the first connecting shaft and the second connecting shaft, and threaded holes for threaded connection with the second threaded post are provided at both ends of the shaft and one end of the first connecting shaft, for connecting the shaft, the first connecting shaft and the second connecting shaft together.

[0009] In one possible design, each end of the first connecting shaft and the second connecting shaft has a mounting hole. A pin is slidably disposed in the mounting hole. A second spring is disposed in the mounting hole. The two ends of the second spring are fixedly connected to the pin and the mounting hole respectively on the side close to each other. Both ends of the shaft and one end of the first connecting shaft have positioning holes adapted to the pin, which are used to limit the movement between the shaft, the first connecting shaft and the second connecting shaft.

[0010] In one possible design, the outer walls of both the first connecting shaft and the second connecting shaft are provided with a second rectangular opening that communicates with the through hole. An extension block is slidably provided in the second rectangular opening. One end of the extension block is fixedly connected to the pin, which is used to drive the pin to disengage from the positioning hole and release the restriction between them.

[0011] In one possible design, two hollow inserts are fixedly provided on one side of the extension plate, and grooves are provided at both ends of the mounting bracket. Insertion holes corresponding to the hollow inserts are provided on one side of the extension plate and the grooves. Multiple first rectangular openings are provided on the outer wall of the hollow inserts. An elastic strip is fixedly provided on one side of the first rectangular opening. A protrusion is fixedly provided on the outer side of the elastic strip. A positioning groove that cooperates with the protrusion is provided on the inner wall of the insertion hole for positioning two adjacent extension plates.

[0012] In one possible design, a sliding rod is slidably provided on one side of the extension plate between the hollow insert and the insertion hole. A first spring is provided inside the hollow insert, and the two ends of the first spring are fixedly connected to the hollow insert and the sliding rod respectively on their respective adjacent sides. During the insertion process, the elastic strip can be limited by the sliding rod.

[0013] In one possible design, the extension plate has a clearance groove, and a connecting rod that works with a bolt is slidably disposed in the clearance groove. The connecting rod is fixed between two sliding rods.

[0014] In this application, during use, the first connecting shaft is selectively and sequentially threaded onto the shaft according to the number of wire harnesses. While rotating the first connecting shaft, the extension block is engaged and moved within the second rectangular opening, which can drive the pin to move into the mounting hole. Continue to rotate the first connecting shaft until it abuts against the shaft. At this point, the extension block is released, and the pin can be reset and inserted into the corresponding positioning hole under the action of the second spring. The second connecting shaft is then installed on the other end of the first connecting shaft using the same method. Then, put the drag chain wheel on the first connecting shaft and the second connecting shaft, and make the adjacent drag chain wheels and chain wheels abut against each other, and put the drag chain on the drag chain wheel; Finally, according to the splicing length of the first connecting shaft and the second connecting shaft, the extension plates are inserted into the mounting bracket in sequence. After the first extension plate is inserted, it can be inserted into the corresponding hole through the hollow insert. Then, during the insertion of the second extension plate, it can move by resisting the sliding rod through the hollow insert. During the movement, the elastic strip can be limited. Next, rotate the first side plate so that it is perpendicular to the corresponding extension plate. Then, pass the bolt through the through hole and screw it into the first threaded hole. As the bolt passes through the through hole, it will drive the corresponding connecting rod to move. The movement of the connecting rod can drive the two sliding rods to move, thus fixing the two extension plates on the side. When maintenance of the wiring harness is required, simply unscrew the bolts. At this time, the sliding rod on the side can be reset and moved under the action of the first spring, releasing the limit on the elastic strip. In the same way, the extension plate can be taken out in sequence. At this time, the outside of the drag chain wheel is open, which facilitates maintenance of the wiring harness on the inside.

[0015] Beneficial effects: In this invention, the hoist drag chain routing device, which is easy to maintain, allows for the adjustment of the number of drag chain wheels by splicing multiple extension plates and connecting shafts, enabling selective installation according to actual conditions and improving the applicability of the device. In this invention, the hoist drag chain wiring device that is easy to maintain allows multiple extension plates and installations to be directly spliced ​​together sequentially through the design of hollow inserts and holes. During the splicing process, the elastic strips and sliding rods can be used to fix them sequentially, preventing them from coming apart during use, thus improving the stability of the splicing and facilitating the maintenance of the inner wiring harness. In this invention, the easy-to-maintain hoist drag chain routing device can fix two adjacent connecting shafts by using the cooperation of threaded post and second threaded hole, as well as pin and positioning hole. It will not detach during use, making it more stable and easy to splice. In this invention, by directly rotating the sprocket and the drag chain wheel on the shaft and fixing their axial positions, not only is the manufacturing process simplified, but material and processing costs are also directly reduced. At the same time, because assembly becomes simpler, production and assembly time is reduced, maintenance efficiency is improved, and production costs are further reduced. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a hoist drag chain routing device that is easy to maintain, as proposed in this invention. Figure 2 This is a schematic diagram of the support structure for a hoist drag chain routing device that is easy to maintain, as proposed in this invention. Figure 3 This is a side view of a hoist drag chain routing device that is easy to maintain, as proposed in this invention. Figure 4 This is a schematic diagram of the support chain structure of a hoist drag chain routing device that is easy to maintain, as proposed in this invention.

[0017] Figure 5 This is a three-dimensional structural diagram of another installation method for a hoist drag chain routing device that is easy to maintain, as proposed in this invention.

[0018] Figure 6 This is a schematic diagram of the connection structure between the extension plate and the first side plate of a hoist drag chain routing device that is easy to maintain, as proposed in this invention.

[0019] Figure 7 This is a schematic diagram of the extension plate and its connection structure of an easy-to-maintain hoist drag chain routing device proposed in this invention.

[0020] Figure 8This is a schematic diagram of the connecting shaft connection structure of a hoist drag chain routing device that is easy to maintain, as proposed in this invention.

[0021] In the diagram: 1. Mounting bracket; 101. Horizontal section; 102. Vertical section; 103. Shaft section; 104. Limiting space; 2. First side plate; 201. First threaded hole; 3. Wiring harness; 4. Chain wheel; 5. Cable wheel; 6. Cable chain; 601. Cable chain body; 602. Cable chain plate; 603. Cable chain bracket; 7. Bolt; 8. Washer; 9. Second side plate; 10. Extension plate; 11. Groove; 12. Hollow insert 13. Insertion hole; 14. Sliding rod; 15. Relief groove; 16. Connecting rod; 17. Through hole; 18. First spring; 19. First rectangular opening; 20. Elastic strip; 21. Protrusion; 22. First connecting shaft; 23. Second connecting shaft; 24. Threaded post; 25. Second threaded hole; 26. Positioning hole; 27. Mounting hole; 28. Second rectangular opening; 29. ​​Pin; 30. Second spring; 31. Extension block. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] Example 1 Reference Figures 1-8 A maintenance-friendly hoist drag chain routing device, used in the hoist field, includes: a mounting bracket 1, a chain wheel 4, a drag chain 6, a wiring harness 3, and a support mechanism.

[0024] The mounting bracket 1 adopts an I-shaped design, consisting of a horizontal part 101, a vertical part 102, and a shaft part 103. At least one chain wheel 4 is fitted on the shaft part 103 for connecting with the chain on the hoist. The two ends of the shaft part 103 are respectively provided with a first connecting shaft 22 and a second connecting shaft 23 that can be spliced. Both the first connecting shaft 22 and the second connecting shaft 23 are fitted with drag chain wheels 5, so that more drag chain wheels 5 can be installed.

[0025] The cable chain 6 consists of a cable chain body 601, a cable chain plate 602, and a cable chain bracket 603. The cable chain plate 602 is connected to the lifting frame of the hoist, and the cable chain bracket 603 is connected to the slider inside the column. The two ends of the cable chain body 601 are fixedly connected to the cable chain plate 602 and the cable chain bracket 603, respectively, and the middle part is wound around the cable chain wheel 5, which plays a guiding role for the cable chain 6. The wire harness 3 is set inside the cable chain body 601, which is effectively protected and guided.

[0026] The support mechanism is set on the mounting bracket 1 to support the second connecting shaft 23 on the side and to form a limiting space 104 between the first connecting shaft 22 and the mounting bracket 1. This design not only ensures the stability of the cable chain device, but also limits the cable chain 6.

[0027] Furthermore, the support mechanism includes multiple extension plates 10 that are sequentially spliced ​​together. These extension plates 10 can be connected to the mounting bracket 1 by plugging them in, and the length of the support mechanism can be adjusted by adding or reducing the number of extension plates 10. The extension plate 10 closest to the mounting bracket 1 is plugged into the mounting bracket 1, and the bottom of the other end of the extension plate 10 is provided with a first side plate 2. The bottom of the other side of the mounting bracket 1 is provided with a second side plate 9. The second side plate 9 is connected to the other end of the shaft portion 103. The first side plate 2 is fixedly sleeved on the corresponding second connecting shaft 23. In this way, through the synergistic effect of the mounting bracket 1, the extension plate 10, the first side plate 2, and the second side plate 9, a stable support structure is formed.

[0028] Furthermore, both the mounting bracket 1 and the extension plate 10 have through holes 17 at their tops, and the first side plate 2 and the second side plate 9 each have a first threaded hole 201 at their tops. Bolts 7 pass through the through holes 17, with their bottom threads threaded into the first threaded holes 201, for fixing the side extension plate 10, the first side plate 2, the mounting bracket 1, and the second side plate 9 together. This connection method is not only simple and reliable but also facilitates disassembly and assembly, further improving the maintenance efficiency of the device.

[0029] A second threaded post 24 is fixedly provided at one end of the first connecting shaft 22 and the second connecting shaft 23. Threaded holes 25 that are threaded to the second threaded post 24 are provided at both ends of the shaft 103 and at one end of the first connecting shaft 22. By rotating the second threaded post 24, the connection and separation of the shaft 103, the first connecting shaft 22 and the second connecting shaft 23 can be easily realized.

[0030] To further improve the stability of the connection, mounting holes 27 are provided at one end of the first connecting shaft 22 and the second connecting shaft 23. A pin 29 is slidably provided in the mounting hole 27, and a second spring 30 is also provided in the mounting hole 27. The two ends of the second spring 30 are fixedly connected to the pin 29 and the side of the mounting hole 27 that are close to each other, respectively. Positioning holes 26 that are adapted to the pin 29 are provided at both ends of the shaft 103 and one end of the first connecting shaft 22. When the pin 29 is inserted into the positioning hole 26, the shaft 103, the first connecting shaft 22 and the second connecting shaft 23 can be limited to prevent them from rotating relative to each other.

[0031] To facilitate the operation of the pin 29, the outer walls of the first connecting shaft 22 and the second connecting shaft 23 are each provided with a second rectangular opening 28 that communicates with the through hole 17. An extension block is slidably provided in the second rectangular opening 28, and one end of the extension block is fixedly connected to the pin 29. By operating the extension block, the pin 29 can be easily moved between the positioning hole 26 and the mounting hole 27, thereby realizing the limiting and releasing of the connection between the connecting shafts.

[0032] During the splicing process of the extension plate 10, in order to improve the stability and convenience of the connection, two hollow inserts 12 are fixedly provided on one side of the extension plate 10. Grooves 11 are opened at both ends of the mounting bracket 1. Insertion holes 13 corresponding to the hollow inserts 12 are opened on one side of the extension plate 10 and the grooves 11. When the extension plate 10 is spliced ​​with the mounting bracket 1 or other extension plates 10, the hollow inserts 12 will be inserted into the corresponding insertion holes 13 to achieve initial positioning.

[0033] To improve the connection stability between the hollow plug 12 and the socket 13, a plurality of first rectangular openings 19 are formed on the outer wall of the hollow plug 12. An elastic strip 20 is fixedly provided on one side of the first rectangular opening 19, and a protrusion 21 is fixedly provided on the outer side of the elastic strip 20. A positioning groove that cooperates with the protrusion 21 is formed on the inner wall of the socket 13 to position the two adjacent extension plates 10 so that they do not separate automatically.

[0034] A sliding rod 14 is slidably provided on one side of the extension plate 10 between the hollow insert 12 and the insertion hole 13. A first spring 18 is provided inside the hollow insert 12. The two ends of the first spring 18 are fixedly connected to the hollow insert 12 and the sliding rod 14 respectively. During the insertion process, the sliding rod 14 can limit the elastic strip 20. After separation, the sliding rod 14 can automatically reset under the force of the first spring 18, releasing the limit on the elastic strip 20.

[0035] In order to fix the two adjacent extension plates 10 on the side, a relief groove 15 is provided in the extension plate 10. A connecting rod 16 that works with the bolt 7 is slidably provided in the relief groove 15. The connecting rod 16 is fixed between the two sliding rods 14. Through the cooperation of the connecting rod 16 and the bolt 7, the extension plate 10 on the side can be fixed at the same time as the bolt 7 is installed, so as to prevent the extension plate 10 on the side from separating.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A maintenance-friendly hoist drag chain routing device, characterized in that, include: Mounting bracket (1), which is composed of a horizontal part (101), a vertical part (102) and a shaft part (103) to form an I-shape. At least one chain wheel (4) is sleeved on the shaft part (103) for connecting with the chain on the hoist. The two ends of the shaft part (103) are respectively provided with a first connecting shaft (22) and a second connecting shaft (23) that can be spliced. Both the first connecting shaft (22) and the second connecting shaft (23) are sleeved with drag chain wheels (5). The cable chain (6) is composed of a cable chain body (601), a cable chain plate (602), and a cable chain bracket (603). The cable chain plate (602) is connected to the lifting frame of the hoist, and the cable chain bracket (603) is connected to the slider inside the column. The two ends of the cable chain body (601) are fixedly connected to the cable chain plate (602) and the cable chain bracket (603) respectively, and the middle part is wound around the cable chain wheel (5) for guiding the cable chain (6). A wire harness (3) is disposed inside the cable chain body (601); The support mechanism is mounted on the mounting bracket (1) to support the second connecting shaft (23) on the side and to form a limiting space (104) between the first connecting shaft (22) and the mounting bracket (1).

2. The easy-to-maintain hoist drag chain routing device according to claim 1, characterized in that, The support mechanism includes multiple extension plates (10) that are spliced ​​together in sequence. The extension plate (10) near the mounting bracket (1) is inserted into the mounting bracket (1). The bottom of the extension plate (10) at the other end is provided with a first side plate (2). The bottom of the other side of the mounting bracket (1) is provided with a second side plate (9). The second side plate (9) is connected to the other end of the shaft (103). The first side plate (2) is fixedly sleeved on the corresponding second connecting shaft (23). The top of the mounting bracket (1) and the extension plate (10) are provided with through holes (17). The top of the first side plate (2) and the second side plate (9) are provided with first threaded holes (201). A bolt (7) is inserted through the through hole (17). The bottom end of the bolt (7) is threaded in the first threaded hole (201) for fixing the side extension plate (10), the first side plate (2), the mounting bracket (1), and the second side plate (9) together.

3. The easy-to-maintain hoist drag chain routing device according to claim 1, characterized in that, A second threaded post (24) is fixedly provided at one end of the first connecting shaft (22) and the second connecting shaft (23). A second threaded hole (25) for threaded connection with the second threaded post (24) is provided at both ends of the shaft (103) and at one end of the first connecting shaft (22), so as to connect the shaft (103), the first connecting shaft (22) and the second connecting shaft (23) together.

4. A maintenance-friendly hoist drag chain routing device according to claim 3, characterized in that, One end of the first connecting shaft (22) and the second connecting shaft (23) is provided with a mounting hole (27). A pin (29) is slidably provided in the mounting hole (27). A second spring (30) is provided in the mounting hole (27). The two ends of the second spring (30) are fixedly connected to the pin (29) and the side of the mounting hole (27) that are close to each other, respectively. Both ends of the shaft (103) and one end of the first connecting shaft (22) are provided with positioning holes (26) that are adapted to the pin (29) for limiting the position between the shaft (103), the first connecting shaft (22) and the second connecting shaft (23).

5. A maintenance-friendly hoist drag chain routing device according to claim 4, characterized in that, The outer walls of the first connecting shaft (22) and the second connecting shaft (23) are provided with a second rectangular opening (28) that communicates with the through hole (17). An extension block is slidably provided in the second rectangular opening (28). One end of the extension block is fixedly connected to the pin (29) and is used to drive the pin (29) to disengage from the positioning hole (26) and release the restriction between them.

6. A maintenance-friendly hoist drag chain routing device according to claim 2, characterized in that, Two hollow inserts (12) are fixedly provided on one side of the extension plate (10). Grooves (11) are provided at both ends of the mounting bracket (1). Insertion holes (13) corresponding to the hollow inserts (12) are provided on one side of the extension plate (10) and the grooves (11). Multiple first rectangular openings (19) are provided on the outer wall of the hollow inserts (12). An elastic strip (20) is fixedly provided on one side of the first rectangular opening (19). A protrusion (21) is fixedly provided on the outer side of the elastic strip (20). A positioning groove that cooperates with the protrusion (21) is provided on the inner wall of the insertion hole (13) for positioning two adjacent extension plates (10).

7. A maintenance-friendly hoist drag chain routing device according to claim 6, characterized in that, The extension plate (10) has a sliding rod (14) slidably provided on one side between the hollow plug (12) and the insertion hole (13). The hollow plug (12) is provided with a first spring (18). The two ends of the first spring (18) are fixedly connected to the hollow plug (12) and the sliding rod (14) respectively. During the insertion process, the elastic strip (20) can be limited by the sliding rod (14).

8. A maintenance-friendly hoist drag chain routing device according to claim 7, characterized in that, The extension plate (10) has a relief groove (15) and a connecting rod (16) that works with the bolt (7) is slidably provided in the relief groove (15). The connecting rod (16) is fixed between the two sliding rods (14).

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