Foreign matter prevention thrust wheel

Abstract

The utility model discloses a foreign matter prevention thrust wheel which comprises a wheel body, a wheel shaft and a bearing, the wheel shaft is inserted into the wheel body, grooves are formed in the two ends of the wheel body, sealing pieces are inserted into the grooves, the ends, facing the outside of the grooves, of the sealing pieces are in sliding contact with end covers, the end covers are connected to the annular surface of the wheel shaft in a sleeved mode, and the bearing is arranged on the wheel body. An annular insertion groove is formed in the annular inner surface of the side, facing the interior of the groove, of the end cover, and the sealing piece is inserted into the annular insertion groove. The annular insertion groove is formed in the annular inner surface of the side, facing the interior of the groove, of the end cover, the annular inclined face is arranged on the annular surface of the end, away from the second oil seal frame, of the first oil seal frame, the first sealing ring can be conveniently inserted into the annular insertion groove through the annular inclined face, and the annular insertion groove is used for wrapping the first sealing ring; the wearable area of the first sealing ring and the end cover is increased, so that the service life of the first sealing ring is prolonged.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of track wheels, in particular to a foreign body-proof track wheel. Background Art

[0002] The track wheel is one of the four wheels and one belt of crawler engineering machinery chassis. It is mainly composed of wheel body, wheel axle, floating oil seal, end cover and other related parts. Its main function is to support the weight of excavators and bulldozers and allow the track to move along the wheels.

[0003] As the sealing ring of the supporting wheel rotates, a gap will be formed between the sealing ring and the end cover after wear, causing mud and water to enter the wheel body through the gap between the sealing ring and the end cover when the construction machinery moves in mud and water, resulting in a reduction in the service life of the sealing ring. Therefore, a foreign body-proof supporting wheel is needed. Utility Model Content

[0004] The technical solution of the utility model aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. It mainly provides an anti-foreign object supporting wheel to solve the technical problem of reduced service life of the sealing ring proposed in the above background technology.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A foreign body-proof supporting wheel comprises a wheel body, a wheel axle and a bearing, wherein the wheel axle is inserted into the wheel body, grooves are provided at both ends of the wheel body, a sealing member is inserted into the groove, an end of the sealing member facing the outside of the groove is in sliding contact with an end cover, the end cover is sleeved on the annular surface of the wheel axle, an annular inner surface of the end cover facing the inside of the groove is provided with an annular slot, and the sealing member is inserted into the annular slot.

[0007] Preferably, the sealing member comprises a first oil seal frame and a second oil seal frame, the first oil seal frame contacts the second oil seal frame, one end of the first oil seal frame away from the second oil seal frame contacts the end cover, one end of the second oil seal frame away from the first oil seal frame contacts the bearing, an annular surface of the first oil seal frame on the side away from the second oil seal frame is provided with an annular inclined surface, a first sealing ring is sleeved on the annular inclined surface, the first sealing ring is inserted into an annular slot, a second sealing ring is sleeved on the side of the second oil seal frame away from the first oil seal frame, and the second sealing ring is slidably connected in the groove.

[0008] Preferably, an annular groove is provided in the annular slot, an annular plate is slidably connected in the annular groove, the annular plate is in contact with the first sealing ring, a plurality of circular grooves are provided in the annular groove, a telescopic part is connected and fixed in the circular groove, and the end of the telescopic part away from the circular groove is connected and fixed to the annular plate.

[0009] Preferably, the telescopic member comprises a round rod, which is inserted into a round hole, one end of the round rod in the round groove is connected and fixed with an elastic member, one end of the elastic member away from the round rod is connected and fixed in the round hole, and one end of the round rod away from the elastic member is connected and fixed to the annular plate.

[0010] Preferably, an annular baffle is fixedly connected to one end of the first oil seal frame away from the second oil seal frame, and a side of the annular surface away from the first oil seal frame is in contact with the end cover.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. An annular slot is provided on the annular inner surface of the end cover facing the inner side of the groove, and an annular inclined surface is provided on the annular surface of the first oil seal frame at one end away from the second oil seal frame, so that the first sealing ring is inserted into the annular slot by utilizing the annular inclined surface, and the first sealing ring is wrapped by utilizing the annular slot, thereby increasing the wearable area of ​​the first sealing ring and the end cover, thereby increasing the service life of the first sealing ring.

[0013] 2. The annular plate is fitted with the first sealing ring through a telescopic structure composed of an elastic member and a round rod, and the supporting effect of the telescopic structure is utilized to ensure that the first sealing ring is fitted with the end cover under the supporting effect of the annular plate, thereby improving the sealing performance between the first sealing ring and the end cover.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 For the utility model Figure 1 A magnified schematic diagram of center A.

[0017] Description of Reference Numerals

[0018] 1. Wheel body; 2. Bearing; 3. End cover; 4. Wheel axle; 5. Elastic member; 6. Round rod; 7. Annular plate; 8. First sealing ring; 9. Second sealing ring; 10. Second oil seal frame; 11. First oil seal frame; 12. Annular slope; 13. Annular baffle. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field of the present invention. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] Please refer to the attached Figure 1-2 A foreign body-proof supporting wheel comprises a wheel body 1, a wheel axle 4 and a bearing 2, wherein the wheel axle 4 is inserted into the wheel body 1, grooves are provided at both ends of the wheel body 1, and a first oil seal frame 11 and a second oil seal frame 10 are inserted into the grooves, and the first oil seal frame 11 contacts the second oil seal frame 10, and an end cover 3 is slidably connected to an end of the first oil seal frame 11 away from the second oil seal frame 10, and an end of the second oil seal frame 10 away from the first oil seal frame 11 contacts the bearing 2, an annular inclined surface 12 is provided on an annular surface of the first oil seal frame 11 away from the second oil seal frame 10, and a first sealing ring 8 is sleeved on the annular inclined surface 12, an annular slot is provided on the annular inner surface of the end cover 3 facing the groove, and the first sealing ring 8 is inserted into the annular slot, and a second sealing ring 9 is sleeved on a side of the second oil seal frame 10 away from the first oil seal frame 11, and the second sealing ring 9 is slidably connected in the groove.

[0023] An annular slot is provided on the annular inner surface of the end cover 3 facing the inner side of the groove, and an annular inclined surface 12 is provided on the annular surface of the first oil seal frame 11 at one end away from the second oil seal frame 10. The annular inclined surface 12 is utilized to facilitate the first sealing ring 8 to be inserted into the annular slot, and the annular slot is utilized to wrap the first sealing ring 8, thereby increasing the wearable area of ​​the first sealing ring 8 and the end cover 3, thereby increasing the service life of the first sealing ring 8.

[0024] An annular circular groove is opened in the annular slot, and an annular plate 7 is slidably connected in the annular circular groove. The annular plate 7 contacts the first sealing ring 8. A plurality of circular grooves are opened in the annular circular groove, and a round rod 6 is inserted in the circular groove. One end of the round rod 6 in the circular groove is connected and fixed with an elastic member 5, and the elastic member 5 is a spring. The elastic member 5 is in a normal state, and one end of the elastic member 5 away from the round rod 6 is connected and fixed in the circular hole, and one end of the round rod 6 away from the elastic member 5 is connected and fixed with the annular plate 7.

[0025] The annular plate 7 is fitted with the first sealing ring 8 through a telescopic structure composed of an elastic member 5 and a round rod 6, and the supporting effect of the telescopic structure is utilized to ensure that the first sealing ring 8 is fitted with the end cover 3 under the supporting effect of the annular plate 7, thereby improving the sealing performance between the first sealing ring 8 and the end cover 3.

[0026] In order to prevent the first sealing ring 8 from detaching from the annular inclined surface 12 before the end cover 3 is inserted into the groove, a fixed annular baffle 13 is connected to the end of the first oil seal frame 11 away from the second oil seal frame 10, and the side of the annular surface away from the first oil seal frame 11 contacts the end cover 3.

[0027] The specific operation process of the utility model is as follows: the initial state of the first sealing ring 8 is on the annular inclined surface 12. When the end cover 3 is inserted, since the cross section of the annular inclined surface 12 is smaller than the inner diameter of the first sealing ring 8, when the end cover 3 contacts the first sealing ring 8, the first sealing ring 8 can be squeezed inward and finally enters the annular slot. Then, as the end cover 3 goes deeper, the first sealing ring 8 passes through the raised part of the first oil seal frame 11 under the push of the end cover 3 and is sleeved on the annular surface of the first oil seal frame 11. At this time, the first sealing ring 8 is bent and tightly attached to the annular slot, and the other side contacts the annular plate 7. When the first sealing ring 8 is worn during long-term use, the bent part compensates for the worn part and remains in the annular slot, and is tightly attached to the annular slot under the extrusion of the telescopic structure composed of the elastic member 5 and the round rod 6.

[0028] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A foreign body-proof track roller, comprising a wheel body (1), a wheel axle (4) and a bearing (2), characterized in that: The wheel axle (4) is inserted into the wheel body (1); grooves are provided at both ends of the wheel body (1); a sealing member is inserted into the groove; an end of the sealing member facing the outside of the groove is in sliding contact with an end cover (3); the end cover (3) is sleeved on the annular surface of the wheel axle (4); an annular slot is provided on the annular inner surface of the end cover (3) facing the inside of the groove; the sealing member is inserted into the annular slot; the sealing member comprises a first oil seal frame (11) and a second oil seal frame (10); the first oil seal frame (11) is in contact with the second oil seal frame (10); the first oil seal frame (11) is away from the second oil seal frame (10); One end of the second oil seal frame (10) contacts the end cover (3); one end of the second oil seal frame (10) away from the first oil seal frame (11) contacts the bearing (2); an annular surface of the first oil seal frame (11) away from the second oil seal frame (10) is provided with an annular inclined surface (12); a first sealing ring (8) is sleeved on the annular inclined surface (12); the first sealing ring (8) is inserted into the annular slot; a second sealing ring (9) is sleeved on the side of the second oil seal frame (10) away from the first oil seal frame (11); the second sealing ring (9) is slidably connected in the groove.

2. The foreign body-proof track roller according to claim 1, characterized in that: An annular circular groove is provided in the annular slot, an annular plate (7) is slidably connected in the annular circular groove, the annular plate (7) is in contact with a first sealing ring (8), a plurality of circular grooves are provided in the annular circular groove, a telescopic member is connected and fixed in the circular groove, and one end of the telescopic member away from the circular groove is connected and fixed to the annular plate (7).

3. The foreign body-proof track roller according to claim 2, characterized in that: The telescopic member comprises a round rod (6), the round rod (6) being inserted into the round hole, one end of the round rod (6) in the round groove being connected and fixed to an elastic member (5), one end of the elastic member (5) away from the round rod (6) being connected and fixed to the round hole, and one end of the round rod (6) away from the elastic member (5) being connected and fixed to the annular plate (7).

4. The foreign body-proof track roller according to claim 1, characterized in that: An annular baffle (13) is fixedly connected to one end of the first oil seal frame (11) away from the second oil seal frame (10), and a side of the annular surface away from the first oil seal frame (11) is in contact with the end cover (3).

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