CN215567223U

CN215567223U - Pin device for limiting movement

Info

Publication number: CN215567223U
Application number: CN202121401145.4U
Authority: CN
Inventors: 邓辉荣
Original assignee: Shandong Fuwei Environmental Technology Co ltd
Current assignee: Shandong Fuwei Environmental Technology Co ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-01-18
Anticipated expiration: 2031-06-23

Abstract

The utility model discloses a pin device for limiting movement, which comprises a cancellation sleeve head, wherein the cancellation sleeve head is fixed on a pin through fastening screws, connecting rod members are arranged around the pin respectively, the upper end and the lower end of each connecting rod member are provided with bearing inner rings respectively, and a matching member is arranged at the bottom of the pin; the bottom of the pin and the bottom of the sleeve cancellation head are respectively provided with a bearing shoulder, the bearing shoulder of the pin supports the lower end bearing inner ring of the connecting rod component, and the bearing shoulder of the sleeve cancellation head supports the upper end bearing inner ring of the connecting rod component. The utility model utilizes the bearing shoulder arranged on the pin to support the inner ring of the lower end bearing of the connecting rod component, the bearing shoulder arranged on the sleeve cancellation head supports the inner ring of the upper end bearing of the connecting rod component, and then after the fastening screw is locked, the connecting rod component is firmly fixed at a position and cannot generate axial play in the mechanical motion to cause dry friction between matching surfaces.

Description

Pin device for limiting movement

Technical Field

The utility model aims at axial limit movement of a connecting rod component assembled by multiple bearings, and particularly relates to a pin device for limit movement.

Background

The connecting rod component assembled by using a single bearing can limit the axial movement of the connecting rod component by designing the shoulders of the inner ring and the outer ring of the bearing or an interference fit method, but for the connecting rod component assembled by a plurality of bearings, the design of the shoulders of the inner ring and the outer ring of the bearing or the interference fit method is not advisable due to the inconvenience of assembly operation or maintenance operation and the like, and if the axial movement of the connecting rod component is not limited by a proper method, the connecting rod component can generate dry friction with the matching surfaces of other components in movement, and the service life of the machine is shortened.

Disclosure of Invention

The utility model provides a pin device for limiting movement in order to make up for the defects of the prior art.

The utility model is realized by the following technical scheme: a pin device for limiting movement comprises a cancellation sleeve head, wherein the cancellation sleeve head is fixed on a pin through fastening screws, connecting rod members are arranged around the pin respectively, bearing inner rings are arranged at the upper end and the lower end of each connecting rod member respectively, and a matching member is arranged at the bottom of the pin; the bottom of the pin and the bottom of the sleeve cancellation head are respectively provided with a bearing shoulder, the bearing shoulder of the pin supports the lower end bearing inner ring of the connecting rod component, and the bearing shoulder of the sleeve cancellation head supports the upper end bearing inner ring of the connecting rod component.

Preferably, the mating surfaces of the link members and the mating surfaces of the mating members correspond.

Preferably, the center lines of the cancellation sleeve head and the fastening screw are on the same normal line.

Compared with the prior art, the utility model has the advantages that: the utility model relates to a device which is designed aiming at the situation that more than two connecting rod components need to be assembled by bearings, and the axial movement of the connecting rod components is not suitable to be limited by adopting the design of shoulders of inner and outer rings of the bearings or an interference tight fit method due to the reasons of inconvenient assembly operation or maintenance operation and the like. The bearing shoulder arranged on the pin is used for abutting against the bearing inner ring at the lower end of the connecting rod member, the bearing shoulder arranged on the cancellation sleeve head is used for abutting against the bearing inner ring at the upper end of the connecting rod member, and then after the fastening screw is locked, the connecting rod member is firmly fixed at a position and cannot generate axial movement in mechanical movement to cause dry friction between matching surfaces.

Drawings

The utility model will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a pin according to the present invention.

FIG. 2 is a schematic view of the pin of the present invention;

FIG. 3 is a schematic illustration of the pin member of the present invention shown disassembled;

in the figure, 1, a pin, 2, a cancellation sleeve head, 3, a fastening screw, 4, a connecting rod component, 5, a matching component, 6 and a bearing shoulder.

Detailed Description

The following detailed description of embodiments of the utility model is provided in connection with the accompanying drawings.

As shown in fig. 1-3, a pin device for limiting movement, a cancellation sleeve head 2, the cancellation sleeve head 2 is fixed on a pin 1 through a fastening screw 3, a connecting rod member 4 is respectively arranged around the pin 1, the upper end and the lower end of the connecting rod member 4 are respectively provided with a bearing inner ring, and the bottom of the pin 1 is provided with a matching member 5; the bottom of the pin 1 and the bottom of the sleeve canceling head 2 are respectively provided with a bearing shoulder 6, the bearing shoulder 6 of the pin 1 supports the lower end bearing inner ring of the connecting rod member 4, and the bearing shoulder 6 of the sleeve canceling head 2 supports the upper end bearing inner ring of the connecting rod member 4.

In this embodiment, the matching surface of the connecting rod member 4 corresponds to the matching surface of the matching member 5, and the center lines of the cancellation sleeve head 2 and the fastening screw 3 are on the same normal line.

The working principle is as follows: if no motion limiting device is arranged, the matching surface of the connecting rod component 4 and the matching surface of the matching component 5 are inevitably subjected to dry friction due to axial movement of the connecting rod component 4 in the motion process, and the service life of the machine is shortened rapidly. The utility model has the function principle that the bearing shoulder 6 arranged on the pin 1 supports the lower end bearing inner ring of the connecting rod component 4, the bearing shoulder 6 (shown in figure 3) arranged on the cancellation sleeve head 2 supports the upper end bearing inner ring of the connecting rod component 4, and then after the fastening screw 3 is locked, the connecting rod component 4 is firmly fixed at a position and does not generate axial play in mechanical movement to cause dry friction between matching surfaces.

In the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for the purpose of describing the present invention but do not require that the present invention must be constructed or operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" in the present invention should be interpreted broadly, and may be connected or disconnected, for example; the terms may be directly connected or indirectly connected through intermediate components, and specific meanings of the terms may be understood as specific conditions by those skilled in the art.

The above description is of the preferred embodiment of the present invention, and the description of the specific embodiment is only for better understanding of the idea of the present invention. It will be appreciated by those skilled in the art that various modifications and equivalents may be made in accordance with the principles of the utility model and are considered to be within the scope of the utility model.

Claims

1. The utility model provides a pin device of spacing motion which characterized in that: the anti-fake device comprises an anti-fake sleeve head (2), wherein the anti-fake sleeve head (2) is fixed on a pin (1) through a fastening screw (3), connecting rod members (4) are arranged around the pin (1) respectively, bearing inner rings are arranged at the upper end and the lower end of each connecting rod member (4) respectively, and a matching member (5) is arranged at the bottom of the pin (1); the bottom of the pin (1) and the bottom of the sleeve canceling head (2) are respectively provided with a bearing shoulder (6), the bearing shoulder (6) of the pin (1) supports against the lower end bearing inner ring of the connecting rod member (4), and the bearing shoulder (6) of the sleeve canceling head (2) supports against the upper end bearing inner ring of the connecting rod member (4).

2. A motion-limiting plunger assembly as set forth in claim 1 wherein: the matching surface of the connecting rod component (4) corresponds to the matching surface of the matching component (5).

3. A motion-limiting plunger assembly as set forth in claim 1 wherein: the center lines of the logout sleeve head (2) and the fastening screw (3) are on the same normal line.