Anti-pollution tensioning wheel assembly

Abstract

The utility model discloses an anti-pollution tensioning wheel assembly which comprises a mounting shaft and a tensioning wheel, one end of the mounting shaft is connected with the tensioning wheel through a bearing, the anti-pollution tensioning wheel assembly further comprises a rotatable screw rod, the mounting shaft is screwed on the screw rod for position adjustment, the rotation of the screw rod can be driven by a wrench or a motor, and the screw rod can rotate. The outward end face of the tensioning wheel is arranged to be a sealing face, the sealing face is further provided with an exhaust hole, the exhaust hole is screwed and sealed through a bolt, and therefore assembling is convenient, the inward end face of the tensioning wheel is provided with an annular groove surrounding the bearing, the installation shaft is sleeved with a limiting sleeve, and one end of the limiting sleeve enters the annular groove and makes contact with the inner ring of the bearing. And a sealing sleeve is arranged between the annular groove and the limiting sleeve. In this way, it is ensured that the tensioning wheel has the anti-pollution technical effect, meanwhile, running of the bearing is not affected, and it is ensured that the tensioning wheel reliably and stably runs under the severe working condition.

Description

Technical Field

[0001] The utility model relates to a tension wheel assembly, in particular to a tension wheel assembly with anti-pollution function. Background Art

[0002] The tensioner is a tensioning device for belt transmission. When the center distance of the belt cannot be adjusted, the tensioner can be used to tension the belt. The tensioner is a follower wheel that presses 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 transmission.

[0003] Especially in mining conditions, there are many pollutants such as dust and liquid splashing. Due to the exposed bearing, dust or liquid will enter the bearing in the tensioner, affecting the performance of the bearing or even causing the bearing to fail. This will affect the efficiency of the belt drive and bring unimaginable impact on the operation of the equipment. Summary of the invention

[0004] In order to solve the above problems, the utility model provides a tension wheel assembly with anti-pollution function, thereby ensuring the reliable and stable operation of the tension wheel under harsh working conditions.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pollution-proof tensioning wheel assembly, comprising a mounting shaft and a tensioning wheel, one end of the mounting shaft is connected to the tensioning wheel via a bearing, and also comprises a rotatable screw, the mounting shaft is threaded on the screw for position adjustment, the outward end surface of the tensioning wheel is configured as a sealing surface, the inward end surface of the tensioning wheel is provided with an annular groove surrounding the bearing, a limiting sleeve is sleeved on the mounting shaft, one end of the limiting sleeve enters the annular groove and contacts the inner ring of the bearing, and a sealing sleeve is provided between the annular groove and the limiting sleeve.

[0006] The sealing sleeve is made of rubber material and is sleeved on the limiting sleeve. The cross-section of the peripheral wall of the sealing sleeve is in the shape of an I. The inner ring of the sealing sleeve is arranged in the shape of a 7. The outer ring of the sealing sleeve can slide in contact with the inner wall of the annular groove of the tensioning wheel.

[0007] An annular groove is provided on the peripheral wall of the annular groove, a retaining ring is arranged in the annular groove, the retaining ring contacts the outer ring of the bearing, and a radially expanding retaining ring is provided at the shaft end of the mounting shaft, and the inner ring of the bearing abuts against the retaining ring.

[0008] In the structure of the utility model, since the outward end surface of the tensioning wheel is set as a sealing surface, the inward end surface of the tensioning wheel is provided with a sealing sleeve, so that the bearing can be sealed in the tensioning wheel, ensuring that the tensioning wheel has the technical effect of anti-pollution, and at the same time does not affect the operation of the bearing, ensuring that the tensioning wheel can operate reliably and stably under harsh working conditions.

[0009] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A three-dimensional diagram of a specific implementation of the utility model;

[0011] Figure 2 It is a cutaway perspective view of a specific implementation mode of the utility model;

[0012] Figure 3 It is a cross-sectional view of a specific implementation method of the utility model. DETAILED DESCRIPTION

[0013] 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.

[0014] like Figure 1 — Figure 3 As shown, this embodiment discloses a tensioning wheel assembly with anti-pollution function, including a mounting shaft 1 and a tensioning wheel 2, one end of the mounting shaft 1 is connected to the tensioning wheel 2 through a bearing 3, and also includes a rotatable screw 4, the mounting shaft 1 is screwed on the screw 4 for position adjustment, which can be used to adjust the tightness of the belt during work, the rotation of the screw 4 can be driven by a wrench or a motor, the outward end surface of the tensioning wheel 2 is set as a sealing surface 21, and the sealing surface 21 is also provided with an exhaust hole, and the exhaust hole is sealed by bolt threading, which is convenient for assembly, the inward end surface of the tensioning wheel 2 is provided with an annular groove 22 surrounding the bearing 3, and a limiting sleeve 5 is sleeved on the mounting shaft 1, one end of the limiting sleeve 5 enters the annular groove 22 and contacts the inner ring of the bearing 3, and a sealing sleeve 6 is provided between the annular groove 22 and the limiting sleeve 5.

[0015] The sealing sleeve 6 is made of rubber, and is tightly sleeved on the limiting sleeve 5. The section of the peripheral wall of the sealing sleeve 6 is in the shape of an "I", and the inner ring of the sealing sleeve 6 is in the shape of a "7", so that the inner ring has better elasticity, and the outer ring of the sealing sleeve 6 can slide in contact with the inner wall of the annular groove 22 of the tensioning wheel 2. This structure makes the sealing effect of the sealing sleeve better.

[0016] An annular groove 23 is provided on the peripheral wall of the annular groove 22, and a retaining ring 7 is arranged in the annular groove 23. The retaining ring 7 contacts the outer ring of the bearing 3. The shaft end of the mounting shaft 1 is provided with a radially expanded retaining ring 10, and the inner ring of the bearing 3 abuts against the retaining ring 10. This structure can make the positioning of the inner and outer rings of the bearing more reliable and stable, ensuring the reliability of the bearing operation.

[0017] By adopting the above technical solution, since the outward end surface of the tensioning wheel 2 is set as the sealing surface 21, and the inward end surface of the tensioning wheel 2 is provided with a sealing sleeve 6, the bearing 3 can be sealed in the tensioning wheel 2, ensuring that the tensioning wheel 2 has an anti-pollution technical effect, and at the same time does not affect the operation of the bearing 3, ensuring that the tensioning wheel 2 can operate reliably and stably under harsh working conditions.

Claims

1. A tension wheel assembly with anti-pollution function, comprising a mounting shaft and a tension wheel, wherein one end of the mounting shaft is connected to the tension wheel via a bearing, and characterized in that: It also includes a rotatable screw rod, the mounting shaft is threaded on the screw rod for position adjustment, the outward end surface of the tensioning wheel is arranged as a sealing surface, the inward end surface of the tensioning wheel is arranged with an annular groove surrounding the bearing, a limiting sleeve is sleeved on the mounting shaft, one end of the limiting sleeve enters into the annular groove and contacts with the inner ring of the bearing, and a sealing sleeve is arranged between the annular groove and the limiting sleeve.

2. The anti-pollution tensioner assembly according to claim 1, characterized in that: The sealing sleeve is made of rubber material and is sleeved on the limiting sleeve. The cross-section of the peripheral wall of the sealing sleeve is in the shape of an "I". The inner ring of the sealing sleeve is arranged in the shape of a "7". The outer ring of the sealing sleeve can slide in contact with the inner wall of the annular groove of the tensioning wheel.

3. The anti-pollution tensioner assembly according to claim 1, characterized in that: An annular groove is provided on the peripheral wall of the annular groove, a retaining ring is arranged in the annular groove, the retaining ring contacts the outer ring of the bearing, and a radially expanding retaining ring is provided at the shaft end of the mounting shaft, and the inner ring of the bearing abuts against the retaining ring.

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