Drag chain supporting device
By designing the tow chain support device for supporting columns, screws and lifting blocks, the problems of easy damage to the support bracket wheel and inconvenient sliding of the tow chain are solved, and the long-distance stable operation and smooth sliding of the tow chain are achieved.
Patent Information
- Application Number
- CN202422276563.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The existing support bracket wheel is prone to damage and the drag chain is inconvenient to slide on the support bracket wheel.
A tow chain support device including support columns, screws and lifting blocks is designed to avoid damage to the bracket and ensure stable sliding of the drag chain by adjusting the height of the support bracket and using the bracket steel sleeve and deep groove ball bearing.
Effectively avoid damage to the support bracket, ensure stable operation of the tow chain from a long distance, and smooth sliding of the tow chain on the bracket, reducing the frequency of shutdown and maintenance.
Smart Images
Figure CN223060553U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of traveling crane drag chains, in particular to a drag chain support device. Background Art
[0002] A traveling crane is the common name for a crane, which is widely used in hoisting heavy equipment, emergency rescue and other lifting tasks. Traveling cranes include cranes, overhead cranes, gantry cranes, etc., and mainly play an important role in ports, factory workshops, power facilities and construction sites, etc. Among them, as a protective device for the traveling crane cable, the drag chain can run back and forth following the movement of the traveling crane, playing a role in safety protection and guiding for the traveling crane cable. During the operation of the drag chain, it needs to be supported by a support idler.
[0003] For traveling cranes with short-distance operation, generally there is no need for a support idler to support the drag chain. However, for traveling cranes with extra-long strokes or in special working conditions, support idlers are usually used to support the long-distance operation of the drag chain, so as to reduce the load-bearing problem of the drag chain to achieve the purpose of long-distance operation of the drag chain, and effectively assist the long-distance and stable operation of the drag chain. The support idlers in the prior art are made of nylon material. After long-term use, the support idlers are prone to damage, such as wear thinning, fracture, and dropping debris, which affects the support effect on the drag chain and requires frequent shutdowns to replace the support idlers. Moreover, during the process of the support idler supporting the drag chain, it is inconvenient for the drag chain to slide on the support idler. Summary of the Invention
[0004] In order to solve the problems that the existing support idlers are prone to damage and the drag chain is inconvenient to slide on the support idlers, the utility model provides a drag chain support device, which can effectively support the drag chain to assist the long-distance and stable operation of the drag chain, can effectively avoid the phenomenon of damage to the support idlers, and at the same time is convenient for the drag chain to slide lightly and stably on the support idlers.
[0005] To achieve the above object, the technical solution of the utility model is: a drag chain support device, including a mounting plate, two support mechanisms are symmetrically arranged on the top of the mounting plate. The support mechanism includes a support column, a lead screw and a lifting block. The support column is a square columnar structure with a hollow interior. The support column is vertically arranged on the top of the mounting plate, and a square hole is opened in the upper part of the support column. The lead screw is rotatably arranged inside the support column, and the lead screw is in transmission connection with the lifting block. The lead screw can drive the lifting block to move up and down, and the height of the lifting block can be adjusted.
[0006] A support idler is arranged between the two support mechanisms. The support idler includes an idler shaft, a nylon idler and an idler steel sleeve. Fixed shafts are connected to both ends of the idler shaft, and the fixed shafts are connected to the lifting blocks. The nylon idler is rotatably sleeved on the two fixed shafts, and the idler steel sleeve is sleeved on the outside of the nylon idler. Adjusting the height of the lifting block can achieve the effect of adjusting the height of the support idler. Under the action of the idler steel sleeve, the phenomenon of damage to the support idler can be effectively avoided.
[0007] Further, a fixing plate is fixedly arranged at the bottom of the support column, and the fixing plate is bolted to the top of the mounting plate. The support column is fixed to the mounting plate through the fixing plate, so as to facilitate the disassembly and installation of the support column.
[0008] Further, the lower end of the screw rod is rotatably connected to the support column, and the upper end of the screw rod extends to the outside of the support column and is fixedly connected to a hand wheel, so that the staff can rotate the screw rod through the hand wheel.
[0009] Further, sliding grooves are symmetrically formed on both sides of the lifting block, and strip-shaped sliding blocks are symmetrically arranged on both sides inside the support column. The lifting block is slidably connected to the strip-shaped sliding blocks through the sliding grooves. Through the cooperation of the strip-shaped sliding blocks and the sliding grooves, it is convenient for the lifting block to move up and down.
[0010] Further, a square groove is formed on one side of the lifting block close to the fixed shaft, and a square block is fixedly arranged at the end of the fixed shaft. The square block passes through the square hole and is inserted into the square groove. Through the cooperation of the square block at the end of the fixed shaft and the square groove, the purpose of installing the support idler between the two support mechanisms is achieved.
[0011] Further, deep groove ball bearings are sleeved on both fixed shafts, and the nylon idler is rotatably connected to the fixed shafts through the deep groove ball bearings; the idler steel sleeve includes a plurality of needle bearings arranged side by side on the outside of the nylon idler. The deep groove ball bearings facilitate the rotation of the nylon idler. At the same time, the outer ring of the needle bearing can rotate relative to the nylon idler, so as to achieve the effect of enabling the drag chain to slide lightly and stably on the support idler.
[0012] Through the above technical solutions, the beneficial effects of the present utility model are as follows:
[0013] The structure of the present utility model is reasonable and has good use effects. The support idler between the two support mechanisms is used to support and guide the drag chain, which can effectively assist the long-distance and stable operation of the drag chain; at the same time, the phenomenon of damage to the support idler can be effectively avoided, and the phenomena of wear thinning, fracture and falling debris can be prevented. It is not necessary to frequently stop the machine to replace the support idler. At the same time, the support idler also facilitates the light and stable sliding of the drag chain.
[0014] The utility model installs the supporting idler wheel between two supporting mechanisms through the cooperation of the square groove on the lifting block and the square block at the end of the fixed shaft, so as to achieve the effect of supporting the drag chain by the supporting idler wheel. Among them, by rotating the lead screw, the lifting block can be driven to move up and down inside the supporting column, and the lifting blocks of the two supporting mechanisms drive the supporting idler wheel to move up and down, so as to achieve the effect of adjusting the height of the supporting idler wheel.
[0015] The utility model forms a idler wheel steel sleeve through a plurality of needle roller bearings. By sleeving the idler wheel steel sleeve on the outer side of the nylon idler wheel, it plays a role in protecting the nylon idler wheel, so as to avoid the damage of the supporting idler wheel. And through the deep groove ball bearing, the nylon idler wheel can rotate, and the outer ring of the needle roller bearing rotates relative to the nylon idler wheel, so as to achieve the effect that the drag chain can slide lightly and stably on the supporting idler wheel. Brief Description of the Drawings
[0016] Figure 1 is a schematic structural diagram of a drag chain supporting device of the utility model Figure 1 ;
[0017] Figure 2 is a schematic structural diagram of a drag chain supporting device of the utility model Figure 2 ;
[0018] Figure 3 is a schematic structural diagram of a drag chain supporting device of the utility model Figure 3 ;
[0019] Figure 4 is a schematic structural diagram of the supporting idler wheel of the utility model;
[0020] Figure 5 is a schematic structural diagram of the lifting block of the utility model;
[0021] Figure 6 is Figure 1 the enlarged structural diagram at A in
[0022] Figure 7 is Figure 4 the enlarged structural diagram at B in
[0023] In the drawings, the reference numerals are: 1 is the mounting plate, 2 is the supporting column, 3 is the fixing plate, 4 is the square hole, 5 is the lead screw, 6 is the hand wheel, 7 is the lifting block, 8 is the sliding groove, 9 is the square groove, 10 is the strip-shaped sliding block, 11 is the idler wheel shaft, 12 is the fixed shaft, 13 is the square block, 14 is the deep groove ball bearing, 15 is the nylon idler wheel, and 16 is the needle roller bearing. Detailed Description of the Preferred Embodiment
[0024] The following further describes the utility model in conjunction with the drawings and the detailed description of the preferred embodiment:
[0025] Such as Figures 1 to 7As shown in the figure, a drag chain support device includes a mounting plate 1. Two support mechanisms are symmetrically arranged on the top of the mounting plate 1. The support mechanism includes a support column 2, a lead screw 5 and a lifting block 7. The support column 2 is a square columnar structure with a hollow interior. The support column 2 is vertically arranged on the top of the mounting plate 1. A square hole 4 is formed in the upper part of the support column 2. The lead screw 5 is rotatably arranged inside the support column 2, and the lead screw 5 is drivingly connected to the lifting block 7. In this embodiment, the square hole 4 facilitates the lifting block 7 to drive the support idler to make a lifting movement. By rotating the lead screw 5, the lead screw 5 drives the lifting block 7 to make a lifting movement inside the support column 2, and the lifting block 7 drives the support idler to make a lifting movement.
[0026] A support idler is arranged between the two support mechanisms. The support idler includes a idler shaft 11, a nylon idler 15 and an idler steel sleeve. Fixed shafts 12 are connected to both ends of the idler shaft 11. The fixed shafts 12 are connected to the lifting block 7. The nylon idler 15 is rotatably sleeved on the two fixed shafts 12, and the idler steel sleeve is sleeved on the outside of the nylon idler 15. In this embodiment, the diameter of the idler shaft 11 is larger than that of the fixed shaft 12. The nylon idler 15 is a cylindrical structure with a hollow interior and open ends at both ends, so that the nylon idler 15 can be sleeved on the idler shaft 11. By simultaneously rotating the lead screws 5 of the two support mechanisms, the lead screws 5 drive the lifting blocks 7 to move inside the support columns 2, and the lifting blocks 7 drive the idler shafts 11 and the nylon idlers 15 to make a lifting movement through the fixed shafts 12, achieving the effect of adjusting the height of the support idler.
[0027] A fixing plate 3 is fixedly arranged at the bottom of the support column 2. The fixing plate 3 is bolted to the top of the mounting plate 1. In this embodiment, by bolt-fixing the fixing plate 3 to the top of the mounting plate 1, it is convenient to disassemble or install the support column 2. After the support idler is installed between the two support columns 2, the fixing plate 3 is fixed to the top of the mounting plate 1.
[0028] The lower end of the lead screw 5 is rotatably connected to the support column 2, and the upper end of the lead screw 5 extends to the outside of the support column 2 and is fixedly connected to a handwheel 6. In this embodiment, the lower end of the lead screw 5 is rotatably connected to the bottom of the support column 2 through a bearing, and it is convenient for the staff to rotate the lead screw 5 through the handwheel 6.
[0029] Chute grooves 8 are symmetrically formed on both sides of the lifting block 7. Bar-shaped sliding blocks 10 are symmetrically arranged on both sides inside the support column 2. The lifting block 7 is slidably connected to the bar-shaped sliding blocks 10 through the chute grooves 8. In this embodiment, during the lifting movement of the lifting block 7 under the action of the lead screw 5, the lifting block 7 slides on the bar-shaped sliding blocks 10, so as to facilitate the lifting movement of the lifting block 7 inside the support column 2.
[0030] One side of the lifting block 7 close to the fixed shaft 12 is provided with a square groove 9. The end of the fixed shaft 12 is fixedly provided with a square block 13, and the square block 13 passes through the square hole 4 and is inserted into the square groove 9. In this embodiment, the square block 13 is matched with the square groove 9. While connecting the fixed shaft 12 with the lifting block 12, it can also prevent the idler shaft 11 and the fixed shaft 12 from rotating.
[0031] Two deep groove ball bearings 14 are sleeved on both of the fixed shafts 12. The nylon idler wheel 15 is rotationally connected with the fixed shaft 12 through the deep groove ball bearings 14. The idler wheel steel sleeve includes a plurality of needle bearings 16 arranged side by side on the outer side of the nylon idler wheel 15. In this embodiment, the number of the deep groove ball bearings 14 is two, and the deep groove ball bearings 14 are located at one end of the fixed shaft 12 close to the idler shaft 11. The number of the needle bearings 16 is sixteen, and the inner rings of the needle bearings 16 are in interference fit with the nylon idler wheel 15.
[0032] When the present utility model is in use, the mounting plate 1 is bolted to the steel structure. During the process that the drag chain runs back and forth following the movement of the traveling crane, the supporting idler wheels support the drag chain. The idler wheel steel sleeve composed of a plurality of needle bearings 16 can effectively prevent the supporting idler wheels from being damaged. During the running process of the drag chain, the outer rings of the needle bearings 16 of the idler wheel steel sleeve can rotate, and the nylon idler wheel 15 can rotate under the action of the deep groove ball bearings 14, so that the drag chain can slide lightly and stably on the supporting idler wheels.
[0033] When adjusting the height of the supporting idler wheels, rotate the lead screws 5 of the two supporting mechanisms simultaneously, that is, rotate the lead screws 5 through the hand wheels 6. The lead screws 5 drive the lifting blocks 7 to move up and down inside the supporting columns 2. The lifting blocks 7 slide on the strip-shaped sliders 10. The lifting blocks 7 of the two supporting mechanisms respectively drive the two fixed shafts 12 to move up and down, so as to drive the idler shaft 11, the nylon idler wheel 15 and the idler wheel steel sleeve to move up and down, achieving the purpose of adjusting the height of the supporting idler wheels.
[0034] The above embodiments are only the preferred embodiments of the utility model, and do not limit the scope of implementation of the utility model. Therefore, all equivalent changes or modifications made according to the technical solutions described in the scope of the utility model patent should be included in the scope of the patent application of the present utility model.
Claims
1. A drag chain support device, comprising a mounting plate (1), characterized in that, Two support mechanisms are symmetrically arranged on the top of the mounting plate (1). The support mechanism includes a support column (2), a lead screw (5) and a lifting block (7). The support column (2) is a square columnar structure with a hollow interior. The support column (2) is vertically arranged on the top of the mounting plate (1). A square hole (4) is formed in the upper part of the support column (2). The lead screw (5) is rotatably arranged inside the support column (2), and the lead screw (5) is drivingly connected to the lifting block (7). A support idler wheel is arranged between the two support mechanisms. The support idler wheel includes an idler shaft (11), a nylon idler wheel (15) and an idler steel sleeve. Fixed shafts (12) are connected to both ends of the idler shaft (11). The fixed shafts (12) are connected to the lifting block (7). The nylon idler wheel (15) is rotatably sleeved on the two fixed shafts (12), and the idler steel sleeve is sleeved on the outside of the nylon idler wheel (15).
2. The kind of drag chain support device according to claim 1, characterized in that, A fixing plate (3) is fixedly arranged at the bottom of the support column (2). The fixing plate (3) is bolted to the top of the mounting plate (1).
3. The kind of drag chain support device according to claim 1, characterized in that, The lower end of the lead screw (5) is rotatably connected to the support column (2). The upper end of the lead screw (5) extends outside the support column (2) and is fixedly connected to a hand wheel (6).
4. The kind of drag chain support device according to claim 1, characterized in that, Chute grooves (8) are symmetrically formed on both sides of the lifting block (7). Bar-shaped sliding blocks (10) are symmetrically arranged on both sides inside the support column (2). The lifting block (7) is slidably connected to the bar-shaped sliding blocks (10) through the chute grooves (8).
5. The kind of drag chain support device according to claim 4, characterized in that, A square groove (9) is formed on one side of the lifting block (7) close to the fixed shaft (12). A square block (13) is fixedly arranged at the end of the fixed shaft (12). The square block (13) passes through the square hole (4) and is inserted into the square groove (9).
6. The kind of drag chain support device according to claim 1, characterized in that, Deep groove ball bearings (14) are sleeved on both of the fixed shafts (12). The nylon idler wheel (15) is rotatably connected to the fixed shaft (12) through the deep groove ball bearings (14). The idler steel sleeve includes a plurality of needle roller bearings (16) arranged side by side on the outside of the nylon idler wheel (15).