Tensioning structure
By using a power mechanism and hydraulic cylinder to drive the slide rail assembly of the tensioning structure, flexible tensioning and angle adjustment of large conveyor belts or chains are achieved, solving the problems of easy structural damage and insufficient adaptability in existing technologies, and improving the stability and applicability of the equipment.
Patent Information
- Application Number
- CN202520994741.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-05-20
AI Technical Summary
Existing tensioning structures use electrodes to drive a lead screw for limited horizontal movement, which can easily lead to lead screw breakage. They cannot adapt to the angle adjustment of large conveyor belts or chains, nor can they flexibly adapt to the tensioning requirements of conveyor belts.
Two power mechanisms drive the movement of both ends of the tensioning mechanism. Combined with the slide rail assembly and hydraulic cylinder structure, the roller can move flexibly and adjust its angle through a PLC controller, avoiding single-end force and increasing the horizontal movement distance.
It enhances the stability of the tensioning structure, prevents lead screw breakage, and enables flexible tensioning and angle adjustment of large conveyor belts or chains, ensuring that the transported items do not deviate from the transport route.
Smart Images
Figure CN223622119U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tensioning devices for large machinery, and in particular to tensioning structures. Background Technology
[0002] Some existing tensioning structures use electrodes to drive a lead screw, which makes limited horizontal movement to achieve the overall displacement of the tensioning structure and thus tension the conveyor belt or chain. However, the horizontal movement distance is small, which can easily cause the lead screw to spin freely and break. This makes it impossible for the tensioning structure to adjust the tension of large conveyor belts or chains. Furthermore, in the application of large conveyor belts, there may be situations where one side needs to be tensioned while the other side does not, making it impossible to flexibly adapt to the angle adjustment of large conveyor belts. Utility Model Content
[0003] In order to facilitate the adjustment of the angle of large conveyor belts or chains, and at the same time increase the horizontal movement distance of the tensioning structure, this utility model provides a tensioning structure.
[0004] The tensioning structure provided by this utility model adopts the following technical solution:
[0005] The tensioning structure includes two power mechanisms, two slide rail assemblies, and a tensioning mechanism. The two ends of the tensioning mechanism are slidably connected to the interior of the corresponding slide rail assembly. The two power mechanisms are respectively driven to move the two ends of the tensioning mechanism in a time-sharing manner.
[0006] By adopting the above technical solution, the two ends of the tensioning structure move under the drive of the power mechanism, and there will be no situation where only one end is under force, thus avoiding damage to the power mechanism and consequently avoiding damage to the tensioning structure.
[0007] Preferably, the tensioning mechanism includes two bearing seats and a roller, with bearings rotatably connected to both ends of the roller, and the two bearings are respectively fixedly connected to the interior of the corresponding bearing seats.
[0008] By adopting the above technical solution, the power mechanism drives the bearing housing to move, and the roller can rotate and move at the same time, thereby adapting to the large conveyor belt or chain that is in operation and completing the tension adjustment.
[0009] Preferably, both power mechanisms include hydraulic cylinders, one end of each hydraulic cylinder is fixedly connected to both ends of the roller, and both bearing seats are located between the two hydraulic cylinders.
[0010] By adopting the above technical solution, two hydraulic cylinders drive the two ends of the roller to move, thereby completing the tensioning or adjustment of large conveyor belts or chains.
[0011] Preferably, each of the two slide rail assemblies includes two parallel slide rails, and the outer surfaces of the two bearing seats are slidably connected between the corresponding two slide rails.
[0012] By adopting the above technical solution, the forward direction of the roller is limited by the slide rail.
[0013] Preferably, one of the hydraulic cylinders drives one of the bearing seats to slide on the corresponding slide rail; two hydraulic cylinders respectively drive one bearing seat to slide in the same direction and at the same distance on the corresponding slide rail; or two hydraulic cylinders respectively drive one bearing seat to slide in the same direction but at different distances on the corresponding slide rail.
[0014] By adopting the above technical solution, under the control of the PLC controller, different hydraulic cylinders drive the two ends of the roller to move. When the hydraulic cylinders drive the two ends of the roller to move the same distance at the same time, the large conveyor belt or chain is tensioned. When the hydraulic cylinders drive the two ends of the roller to move different distances at the same time, the axis of the roller is adjusted to complete the roller deviation adjustment. This prevents the tensioning structure from causing the large conveyor belt or chain to deviate outward or inward during operation and deviate from the transmission route.
[0015] As the technical solution of this utility model, the provided hardware configuration is merely to facilitate the adaptation to angle adjustments of large conveyor belts or chains, and to increase the horizontal movement distance of the tensioning structure. The specific methods for achieving this are not considered the technical problem to be solved or the object of protection of this utility model. Furthermore, the communication methods between the devices all employ existing communication methods and are not innovative points of this application.
[0016] In summary, this utility model has the following beneficial technical effects:
[0017] 1. This structure is equipped with a hydraulic cylinder, which drives the bearing seat to move. The roller can rotate and move at the same time, thus adapting to the large conveyor belt or chain that is in operation and completing the tension adjustment. The hydraulic cylinder structure is strong and has a long stroke. When the tension structure moves under the force at both ends, it is not easy to break, thus making the tension structure more stable and increasing the horizontal movement distance of the tension structure.
[0018] 2. This structure can be used to adjust the alignment of large conveyor belts or chains and other conveying machinery. Under the control of the PLC controller, different hydraulic cylinders drive the two ends of the roller to move. When the hydraulic cylinders drive the two ends of the roller to move the same distance at the same time, the large conveyor belt or chain is tensioned. When the hydraulic cylinders drive the two ends of the roller to move different distances at the same time, the axis of the roller is adjusted, thus completing the roller alignment and preventing the tensioning structure from causing the large conveyor belt or chain to deviate outward or inward during operation and deviate from the conveying route. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the tensioning structure of this utility model;
[0020] Figure 2 This is a top view of the tensioning structure of this utility model;
[0021] Figure 3 This is a side view of the tensioning structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the hydraulic cylinder driving the roller to move in a time-sharing manner in the tensioning structure of this utility model;
[0023] Figure 5 This is a schematic diagram of the tensioning structure in the background art.
[0024] Explanation of reference numerals in the attached drawings: 1. Power mechanism; 2. Slide rail; 3. Tensioning mechanism; 31. Roller; 32. Bearing seat. Detailed Implementation
[0025] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.
[0026] Reference Figure 5 In the background technology, the tensioning position is small and the stroke is short. The micro-displacement is achieved by using a motor to drive the lead screw. The roller is only stressed at one end. However, if the displacement distance is insufficient and the worker continues to operate the roller to move it, the lead screw is prone to breakage, making the tensioning structure unusable.
[0027] This utility model discloses a tensioning structure.
[0028] Reference Figure 1 It includes two power mechanisms 1, two slide rail assemblies and a tensioning mechanism 3. The two power mechanisms 1 and the two slide rail assemblies are fixedly connected to the machinery that needs to be tensioned. The two ends of the tensioning mechanism 3 are slidably connected to the inside of the corresponding slide rail assembly. The two power mechanisms 1 are respectively driven to the two ends of the tensioning mechanism 3. The two power mechanisms 1 drive the two ends of the tensioning mechanism 3 to move in turn, thereby completing the adjustment of the roller 31.
[0029] Reference Figure 1 The tensioning mechanism 3 includes two bearing seats 32 and a roller 31. Both ends of the roller 31 are rotatably connected to bearings, and the two bearings are fixedly connected to the inside of the corresponding bearing seats 32.
[0030] Reference Figure 2 , Figure 4 Both power mechanisms 1 include hydraulic cylinders. The other end of the two hydraulic cylinders is fixed to the machinery that needs to be tensioned. The hydraulic cylinders are digital hydraulic cylinders (known technology). They can complete the length vector control at different speeds through digital pulse signals issued by the PLC controller, thereby accurately controlling the distance the roller 31 moves. There is no need to manually adjust the nut seat on the lead screw to move even a little bit, reducing the adjustment difficulty of the roller 31. One end of the two hydraulic cylinders is fixedly connected to both ends of the roller 31, and the two bearing seats 32 are located between the two hydraulic cylinders.
[0031] Reference Figure 1 , Figure 3 Both slide rail assemblies include two parallel slide rails 2, and the outer surfaces of the two bearing seats 32 are slidably connected between the corresponding two slide rails 2 to limit the forward direction of the roller 31.
[0032] Reference Figure 2 , Figure 4 One of the hydraulic cylinders drives one of the bearing seats 32 to slide on the corresponding slide rail 2. At this time, large conveyor belts or chains do not need to be tensioned, only need to be adjusted.
[0033] Two hydraulic cylinders drive a bearing seat 32 to slide in the same direction and at the same distance on the corresponding slide rail 2. When the PLC controls the two hydraulic cylinders to drive the two ends of the roller 31 to move the same distance, the two ends of the roller 31 move in parallel, thus tensioning large conveyor belts or chains.
[0034] Reference Figure 4 Two hydraulic cylinders drive a bearing seat 32 to slide in the same direction but at different distances on the corresponding slide rail 2. When the PLC controls the two hydraulic cylinders to drive the two ends of the roller 31 to move different distances, large conveyor belts or chains not only need to be tensioned but also need to be adjusted. Therefore, the angle of the axis of the roller 31 is adjusted to complete the adjustment of the roller 31.
[0035] The implementation principle of the tensioning structure in this embodiment of the utility model is as follows:
[0036] Under the control of the PLC controller, different hydraulic cylinders drive the two ends of roller 31 to move. When the hydraulic cylinders drive the two ends of roller 31 to move the same distance at the same time, the large conveyor belt or chain is tensioned. When the hydraulic cylinders drive the two ends of roller 31 to move different distances at the same time, the tension is adjusted and the axis of roller 31 is adjusted to complete the adjustment of roller 31. This prevents the tensioning structure from causing the large conveyor belt or chain to deviate outward or inward during operation and deviate from the transmission route.
[0037] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A tensioning structure, characterized in that: It includes two power mechanisms (1), two slide rail assemblies and a tensioning mechanism (3). The two ends of the tensioning mechanism (3) are slidably connected to the interior of the corresponding slide rail assembly. The two power mechanisms (1) are respectively driven to the two ends of the tensioning mechanism (3). The two power mechanisms (1) drive the two ends of the tensioning mechanism (3) to move in turn.
2. The tensioning structure according to claim 1, characterized in that: The tensioning mechanism (3) includes two bearing seats (32) and a roller (31). Both ends of the roller (31) are rotatably connected to bearings, and the two bearings are respectively fixedly connected to the inside of the corresponding bearing seats (32).
3. The tensioning structure according to claim 2, characterized in that: Both power mechanisms (1) include hydraulic cylinders, one end of each hydraulic cylinder is fixedly connected to both ends of the roller (31), and the two bearing seats (32) are located between the two hydraulic cylinders.
4. The tensioning structure according to claim 3, characterized in that: Both slide rail assemblies include two parallel slide rails (2), and the outer surfaces of the two bearing seats (32) are slidably connected between the corresponding two slide rails (2).
5. The tensioning structure according to claim 4, characterized in that: One of the cylinders drives one of the bearing seats (32) to slide on the corresponding slide rail (2).
6. The tensioning structure according to claim 5, characterized in that: The two cylinders drive a bearing seat (32) to slide in the same direction and at the same distance on the corresponding slide rail (2).
7. The tensioning structure according to claim 6, characterized in that: The two cylinders drive a bearing seat (32) to slide in the same direction but at different distances on the corresponding slide rail (2).