Hydraulic damping type tensioning wheel assembly
By using hydraulic dampers in the tensioner for damping force buffering, the problem of short damping force caused by friction damping parts is solved, achieving a longer service life and a more reliable damping force.
Patent Information
- Application Number
- CN202421221439.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-31
AI Technical Summary
When existing tensioner generates damping force through friction damping parts, it is easy to cause too small or fail due to wear, resulting in short service life.
Hydraulic dampers, including hydraulic cylinders and compression springs, are used to buffer damping force through the piston rods and spring seats of the hydraulic cylinders to avoid frictional contact and provide continuous damping force.
It improves the service life of the tensioner, ensures the sustainability of the damping force and structural reliability, and avoids the wear problem of friction damping parts.
Smart Images
Figure CN222277395U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a tension wheel, in particular to a hydraulic damping type tension wheel assembly. Background Art
[0002] The tensioning wheel is a tensioning device for belt drive. When the center distance of the belt cannot be adjusted, the tensioning wheel can be used to tension the belt. The tensioning wheel is a follower wheel pressed on the belt to change the wrap angle of the pulley or control the tension of the belt. It is a tensioning device for belt drive.
[0003] Since the belt will become weak during the transmission process, it will become loose. When it is loose, it will cause the belt drive to slip, and the tensioner needs to be adjusted to keep it taut. The tension of the tensioner is generally transmitted to the tensioner through a torsion spring to keep it taut. The transmission of the torsion spring is generally relatively fast, causing the belt to be quickly tightened. At the same time, a certain damping force is generated through the friction damping part to ensure that the belt drive does not jump. The friction damping part generally generates damping through a friction disk and a rotating part through contact friction. Once the friction disk is worn, the damping force will be too small or even fail, resulting in a short service life. Summary of the invention
[0004] In order to solve the above problems, the purpose of the utility model is to provide a hydraulic damping tensioner assembly with reliable structure and good damping force continuity, so as to increase its service life.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic damping tensioner assembly, comprising a mounting seat, a swing arm and a tensioner, the swing arm being rotatably connected to the mounting seat via a rotating shaft, the tensioner being mounted at one end of the swing arm, and the other end of the swing arm being rotatably connected to the mounting seat, characterized in that a hydraulic damper is connected between the swing arm and the mounting seat, the bottom of the hydraulic damper is rotatably connected to the mounting seat, the hydraulic damper comprises a hydraulic cylinder and a compression spring, the piston rod of the hydraulic cylinder is connected to the swing arm, a first spring seat is arranged at the end of the piston rod of the hydraulic cylinder, a second spring seat is arranged at the bottom of the hydraulic cylinder, the compression spring is sleeved on the hydraulic cylinder, one end of the compression spring is in contact with the first spring seat, and the other end of the compression spring is in contact with the second spring seat.
[0006] The tensioning wheel is installed on the swing arm through a bearing. The swing arm is provided with a hollow shaft for the bearing to be sleeved. One end of the hollow shaft is sleeved with an annular dust cover and threadedly installed with a limiting bolt so that the dust cover is restricted on the hollow shaft and the dust cover blocks the bearing.
[0007] In the structure of the utility model, when the tensioning wheel is impacted by the belt, the hydraulic damper is used to buffer the damping force to avoid the belt jumping. Compared with the existing friction damping, no wear will be generated, the structure is reliable and the damping force is continuous, which greatly improves the service life of the product.
[0008] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 A three-dimensional diagram of a specific embodiment of the utility model Figure 1 ;
[0010] Figure 2 A three-dimensional diagram of a specific embodiment of the utility model Figure 2 . DETAILED DESCRIPTION
[0011] The present invention is specifically described below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the protection scope of the present invention.
[0012] like Figure 1 — Figure 2 As shown, this embodiment discloses a hydraulic damping tensioning wheel 3 assembly, including a mounting seat 1, a swing arm 2 and a tensioning wheel 3, the swing arm 2 is rotatably connected to the mounting seat 1 through a rotating shaft, the tensioning wheel 3 is mounted on one end of the swing arm 2, and the other end of the swing arm 2 is rotatably connected to the mounting seat 1, a hydraulic damper 4 is connected between the swing arm 2 and the mounting seat 1, the bottom of the hydraulic damper 4 is rotatably connected to the mounting seat 1, the hydraulic damper 4 includes a hydraulic cylinder 41 and a compression spring 42, the piston rod of the hydraulic cylinder 41 is connected to the swing arm 2, a first spring seat 43 is arranged at the end of the piston rod of the hydraulic cylinder 41, a second spring seat 44 is arranged at the bottom of the hydraulic cylinder 41, the compression spring 42 is sleeved on the hydraulic cylinder 41, one end of the compression spring 42 is in contact with the first spring seat 43, and the other end of the compression spring 42 is in contact with the second spring seat 44.
[0013] The tension wheel 3 is installed on the swing arm 2 through a bearing. The swing arm 2 is provided with a hollow shaft for the bearing to be sleeved. One end of the hollow shaft is sleeved with an annular dust cover 5 and screwed with a limit bolt, so that the dust cover 5 is restricted on the hollow shaft and the bearing is blocked by the dust cover 5. The dust cover 5 can prevent dust, liquid and other pollutants from entering the bearing and damaging the bearing, thereby improving the working stability of the bearing.
[0014] By adopting the above technical solution, when the tensioning wheel 3 is impacted by the belt, the hydraulic damper 4 is used to buffer the damping force to avoid belt jumping. Compared with the existing friction damping, no wear will occur, the structure is reliable and the damping force is continuous, which greatly improves the service life of the product.
Claims
1. A hydraulic damping tensioner assembly, comprising a mounting seat, a swing arm and a tensioner, wherein the swing arm is rotatably connected to the mounting seat via a rotating shaft, the tensioner is mounted on one end of the swing arm, and the other end of the swing arm is rotatably connected to the mounting seat, characterized in that: A hydraulic damper is connected between the swing arm and the mounting seat, and the bottom of the hydraulic damper is rotatably connected to the mounting seat. The hydraulic damper includes a hydraulic cylinder and a compression spring. The piston rod of the hydraulic cylinder is connected to the swing arm, a first spring seat is arranged at the end of the piston rod of the hydraulic cylinder, and a second spring seat is arranged at the bottom of the hydraulic cylinder. The compression spring is sleeved on the hydraulic cylinder, one end of the compression spring is in contact with the first spring seat, and the other end of the compression spring is in contact with the second spring seat.
2. The hydraulic damping tensioner assembly according to claim 1 is characterized in that: The tensioning wheel is installed on the swing arm through a bearing. The swing arm is provided with a hollow shaft for the bearing to be sleeved. One end of the hollow shaft is sleeved with an annular dust cover and threadedly installed with a limiting bolt so that the dust cover is restricted on the hollow shaft and the dust cover blocks the bearing.