Self-lubricating thrust gear

Abstract

The utility model discloses a self-lubricating thrust gear which comprises thrust surfaces and an inner threaded hole, the thrust surfaces are arranged on the two side faces of the self-lubricating thrust gear, and thrust surface self-lubricating layers are arranged on the thrust surfaces. The inner threaded hole penetrates through the self-lubricating thrust gear, a threaded self-lubricating layer is arranged on the surface of the inner threaded hole, and the self-lubricating thrust gear can achieve accurate positioning and free rotation without being supported by a rotating shaft and a bearing and is suitable for the working condition with the limited assembly space.

Description

Technical Field

[0001] The utility model relates to the field of gear transmission, in particular to a gear which is suitable for end face support rotation and can self-lubricate. Background Art

[0002] Gears are a common transmission part. Common gears need to be supported and rotated by a shaft, that is, the gear is fixed on the shaft, and the shaft is fixed on the bracket through a bearing, so as to support the gear and rotate the gear. However, in a special transmission condition, for example, the assembly space where the gear is located is extremely small and the shaft and bearing cannot be installed. At this time, how to ensure the support and rotation of the gear becomes a problem.

[0003] In view of the above problems, the utility model provides a self-lubricating thrust gear, which does not require a rotating shaft and bearing support, can also achieve precise positioning and free rotation, and is suitable for working conditions with limited assembly space. Utility Model Content

[0004] The utility model adopts the following technical solutions:

[0005] A self-lubricating thrust gear comprises a thrust surface and an internal threaded hole, wherein the thrust surface is arranged on the two side surfaces of the self-lubricating thrust gear and a thrust surface self-lubricating layer is arranged on the thrust surface, the internal threaded hole passes through the self-lubricating thrust gear and a thread self-lubricating layer is arranged on the surface of the internal threaded hole.

[0006] Preferably, the thrust surface self-lubricating layer and the thread self-lubricating layer are made of wear-resistant polymer materials.

[0007] Preferably, the polymer material is polytetrafluoroethylene.

[0008] Preferably, the internal threaded hole is internally threadedly connected to a screw rod.

[0009] Preferably, the thrust surface abuts against a fixed bracket.

[0010] Compared with the prior art, the beneficial effects of the utility model are: the self-lubricating thrust gear is positioned by a screw and a fixed bracket, and there is a threaded self-lubricating layer between the gear and the screw, and there is a thrust self-lubricating layer between the gear and the fixed bracket, which can ensure the flexible rotation of the gear and enable the gear to be installed and rotated in a very small assembly space. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of a self-lubricating thrust gear according to an embodiment of the utility model;

[0012] Figure 2 For Figure 1The structural schematic diagram of the corresponding self-lubricating thrust gear assembly state;

[0013] Description of reference numerals:

[0014] 1-self-lubricating thrust gear; 2-fixed bracket; 3-screw; 11-thrust surface; 12-internal threaded hole; 21-support surface. DETAILED DESCRIPTION

[0015] The utility model patent is further described below in conjunction with the accompanying drawings.

[0016] The principle of the self-lubricating thrust gear of the utility model embodiment is as follows Figure 1 As shown, the self-lubricating thrust gear 1 includes a thrust surface 11 and an internal threaded hole 12. The thrust surface 11 is arranged on both sides of the self-lubricating thrust gear 1, and a thrust surface self-lubricating layer is arranged on the thrust surface 11. The internal threaded hole 11 passes through the self-lubricating thrust gear 1, and a thread self-lubricating layer is arranged on the surface of the internal threaded hole 11. The thrust surface self-lubricating layer and the thread self-lubricating layer are made of wear-resistant polymer materials, such as nylon or polytetrafluoroethylene.

[0017] When there is Figure 2 In the assembly condition shown, the diameter of the fixed bracket 2 is smaller than that of the self-lubricating thrust gear 1, and the wall between the fixed bracket 2 and the internal threaded hole 11 is very thin. At this time, due to the small assembly space, it is impossible to support the gear with an ordinary bearing. When the self-lubricating thrust gear 1 is assembled, the internal threaded hole 11 is threadedly connected with the screw rod 3, and the thrust surface 11 abuts against the fixed bracket 2. The fixed bracket 2 limits the left and right movement of the self-lubricating thrust gear 1, and the screw rod 3 realizes the fixing of the axis of the self-lubricating thrust gear 1. Therefore, under the joint action of the fixed bracket 2 and the screw rod 3, the self-lubricating thrust gear 1 is positioned and supported. At the same time, since there is a threaded self-lubricating layer between the self-lubricating thrust gear 1 and the screw rod 3, and there is a thrust self-lubricating layer between the self-lubricating thrust gear 1 and the fixed bracket 2, the flexible rotation of the self-lubricating thrust gear 1 can be guaranteed.

[0018] One of the transmission modes is that when the self-lubricating thrust gear 1 is driven by an external meshing gear, the self-lubricating thrust gear 1 rotates and drives the screw rod 3 to move forward and backward through the internal threaded hole 11.

[0019] The above are only preferred specific implementation methods of the utility model patent, but the protection scope of the utility model patent is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model patent, according to the technical solution of the utility model patent and its utility model patent concept, shall be covered by the protection scope of the utility model patent.

Claims

1. A self-lubricating thrust gear, characterized in that: It comprises a thrust surface and an internal threaded hole, wherein the thrust surface is arranged on the two side surfaces of the self-lubricating thrust gear, and a thrust surface self-lubricating layer is arranged on the thrust surface, and the internal threaded hole passes through the self-lubricating thrust gear and a thread self-lubricating layer is arranged on the surface of the internal threaded hole.

2. A self-lubricating thrust gear according to claim 1, characterized in that: The thrust surface self-lubricating layer and the thread self-lubricating layer are made of wear-resistant polymer materials.

3. A self-lubricating thrust gear according to claim 2, characterized in that: The polymer material is polytetrafluoroethylene.

4. The self-lubricating thrust gear according to claim 1, characterized in that: The internal thread hole is internally threadedly connected with a screw rod.

5. The self-lubricating thrust gear according to claim 2, characterized in that: The thrust surface abuts against a fixed bracket.

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