Roller bearing seat walking wheel fixing structure

Abstract

The utility model discloses a roller bearing seat walking wheel fixing structure which comprises a rolling wheel which is connected through a bearing and rotatably arranged on a rotating shaft in a sleeved mode, the inner side position of the rolling wheel is limited by a circular truncated cone on the rotating shaft, and the outer side position of the rolling wheel is limited by an outer side gasket which is coaxially fixed to the end face of a shaft shoulder of the rotating shaft. The original structure that the outer side gasket is limited through a check ring is replaced by the structure that the outer side gasket is directly limited through the connecting piece, and the upper limit of the axial pulling-out force borne by the component is improved.

Description

Technical Field

[0001] The utility model relates to the field of steel rolling rolls, and particularly to a fixed structure for a traveling wheel of a roll bearing seat. Background Art

[0002] In large roll changing equipment, a roller guide rail is usually used to guide the movement of the roll. Figure 1 A conventional roller structure is shown. The outer part of the roller 30 is limited by a retaining ring 3 arranged on a clamping groove 16. Since the roll is a heavy equipment, the roller structure needs to be maintained frequently. The above connection structure is simple and conducive to processing and assembly.

[0003] However, affected by the changes in the operating environment temperature and humidity (such as the high temperature of the roll disassembled and installed on the machine), the straightness of the roller guide rail changes slightly, and an axial component force is generated when the roller 30 rotates, squeezing the retaining ring 3, causing the retaining ring 3 to deform and disengage from the clamping groove 16, resulting in shutdown. And the reset work of heavy equipment seriously affects the production efficiency of the factory. Summary of the Utility Model

[0004] In order to overcome the above defects of the prior art, the purpose of the utility model is to provide a fixed structure for a traveling wheel of a roll bearing seat to achieve the purpose of improving the durability of the roller.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A fixed structure for a traveling wheel of a roll bearing seat, including a roller rotatably sleeved on a rotating shaft through a bearing, the inner position of the roller is limited by a frustum on the rotating shaft, and the outer position of the roller is limited by an outer gasket coaxially fixed on the end face of the shaft shoulder of the rotating shaft.

[0007] In a preferred embodiment of the utility model, the outer gasket is provided with a fixing hole, and the axial fixation of the outer gasket is achieved by a fixing member coaxially with the rotating shaft passing through the fixing hole. The fixing member has a pin rod portion that is inserted into the end face of the shaft shoulder for fixation after passing through the fixing hole and a large head portion that presses the outer gasket to limit axial movement.

[0008] In a preferred embodiment of the utility model, the inner diameter of the fixing hole is larger than the inner diameter of the pin rod portion.

[0009] In a preferred embodiment of the utility model, it further includes a positioning pin inserted between the outer gasket and the end face of the shaft shoulder to limit the circumferential rotation of the outer gasket.

[0010] In a preferred embodiment of the utility model, the pin rod portion is fixed in the end face of the shaft shoulder through a threaded structure provided on the outer circumference.

[0011] In a preferred embodiment of the present utility model, a receiving groove is provided on the outer side surface of the roller, and the outer gasket is placed in the receiving groove.

[0012] The beneficial effects of the present utility model are as follows:

[0013] For the fixed structure of the walking wheel of the roll bearing seat provided by the present utility model, the original structure of limiting the outer gasket through a retaining ring is replaced by directly limiting the outer gasket through a connecting member, which improves the upper limit of the axial pulling force received by this component. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0015] Figure 1 It is an exploded view of the prior art.

[0016] Figure 2 It is an exploded view of the structure of the present utility model.

[0017] Figure 3 It is a schematic structural view of the outer gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. The above description is for the convenience of describing the present utility model and simplifies the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0019] In the specification, when it is said that an element is "on", "fixed" to, "connected" to, "joined" to another element, etc., the element can be directly on, fixed to, connected to, joined to or in contact with another element, or there may be an intermediate element.

[0020] It can be understood that although the terms "first", "second", etc. can be used herein to describe different elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Therefore, the first element can be called the second element without departing from the teachings of the concept of the present application.

[0021] Exemplary embodiments of the present application will be described below with reference to the accompanying drawings. However, it should be understood that the present application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In all the drawings, the same reference numerals denote the same or functionally identical elements.

[0022] Reference Figure 2 For a fixed structure of a walking wheel of a roll bearing housing, as a roller 30 of the walking wheel of the roll bearing housing is inserted from the inner side 1 by a rotating shaft 10, a journal 11 is provided on a portion of the rotating shaft 10 close to the outer side 2. The outer diameter of the journal 11 is smaller than the main body portion of the rotating shaft 10, so that the journal 11 is inserted into the roller 30 and the roller 30 is rotatably arranged on the rotating shaft 10 through a bearing 40 as a connection. A frustum 15 for defining the inner axial position degree of the roller 30 is also provided on the rotating shaft 10. To solve the wear problem, an inner spacer 20 is provided between the frustum 15 and the roller 30. Correspondingly, an outer spacer 50 connected to the end face of the shaft shoulder 12 is also provided on the other side of the roller 30, and a receiving groove 31 for receiving the outer spacer 50 is further provided on the outer side face of the roller 30.

[0023] Combined with reference Figure 3 , a second connection hole 14 and a first connection hole 13 are respectively provided on the end face of the shaft shoulder 12, and a positioning hole 51 and a fixing hole 52 are provided on the outer spacer 50. Among them, the second connection hole 14 and the fixing hole 52 are coaxial with the rotating shaft 10. The pin rod portion 61 of the fixing member 50 passes through the fixing hole 52 and is fastened in the second connection hole 14, and the large head portion 62 abuts against the outer side face of the outer spacer 50. Since the roller 30 rotates together with the bearing 40 during operation, the inner diameter of the fixing hole 52 is slightly larger than the outer diameter of the pin rod portion 61 to prevent the outer spacer 50 from tightly pressing the outer side face of the roller 30 and hindering its rotation. Further, a positioning pin 70 is also provided between the positioning hole 51 and the first connection hole 13 to prevent the outer spacer 50 from rotating when receiving an axial force outward from the roller 30 and causing the fixing member 60 to become loose.

Claims

1. A rolling bearing seat travel wheel fixing structure, comprising a roller rotatably sleeved on a rotating shaft through a bearing connection, wherein the inner side position of the roller is limited by a truncated cone on the rotating shaft, characterized in that: The outer position of the roller is limited by an outer gasket coaxially fixed on the shoulder end face of the rotating shaft; the outer gasket is provided with a fixing hole, and the axial fixation of the outer gasket is achieved by a fixing piece coaxial with the rotating shaft passing through the fixing hole, the fixing piece comprises a pin rod part which passes through the fixing hole and is inserted into the shoulder end face for fixing, and a large head part which squeezes the outer gasket to limit axial movement.

2. A roller bearing seat travel wheel fixing structure as claimed in claim 1, characterized in that: The inner diameter of the fixing hole is larger than the inner diameter of the pin portion.

3. A roller bearing seat travel wheel fixing structure as claimed in claim 2, characterized in that: It also includes a positioning pin that is penetrated between the outer gasket and the shaft shoulder end surface and limits the circumferential rotation of the outer gasket.

4. A roller bearing seat travel wheel fixing structure as claimed in claim 1, characterized in that: The pin rod portion is fixed in the shaft shoulder end surface via a threaded structure arranged on the outer periphery.

5. A roller bearing seat travel wheel fixing structure according to any one of claims 1 to 4, characterized in that: The outer side surface of the roller is provided with a receiving groove, and the outer gasket is placed in the receiving groove.

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