Rolling needle bearing mounting tool

Abstract

The utility model discloses a needle bearing installation frock relates to piston rod needle bearing assembly technical field, the utility model discloses a limiting mechanism and install into the mechanism, the limiting mechanism includes the inside resistance mechanism of the outer edge as the cylindrical arc surface, the outside resistance mechanism of the inside resistance mechanism's outside coaxial cover is with the inner chamber as the cylindrical arc surface, the needle accommodating cavity is arranged between the outer wall of inside resistance mechanism and the inner wall of outside resistance mechanism, the install into the mechanism constructs with the first cylindrical end and second cylindrical end, the outer diameter of first cylindrical end is same with the inner diameter of outside resistance mechanism, and the outer diameter of second cylindrical end is same with the outer diameter of inside resistance mechanism, to solve the difficult problem of needle bearing assembly in piston rod, realizes the purpose that lets piston rod and piston cylinder and needle bearing realize synchronous assembly completion simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of piston rod needle roller bearing assembly technology, specifically, it is a needle roller bearing installation fixture. Background Technology

[0002] Needle roller bearings are a very special and important type of rolling bearing. Their core characteristic lies in the use of slender cylindrical rollers (needles) as rolling elements. This specific structure endows needle roller bearings with high radial load capacity, small radial section height, and compact structure. In particular, cageless needle roller bearings further reduce the bearing's installation space, making the overall layout even more compact. However, needle roller bearings, especially cageless ones, present inherent installation difficulties. Utility Model Content

[0003] The purpose of this utility model is to provide a needle roller bearing installation fixture to solve the problem of difficult assembly of needle roller bearings in piston rods, and at the same time achieve the purpose of synchronous assembly of piston rod, piston cylinder and needle roller bearings.

[0004] To solve the above problems, the present invention adopts the following technical means: A needle roller bearing mounting fixture includes a limiting mechanism and an insertion mechanism; The limiting mechanism includes an inner abutting mechanism with an outer cylindrical arc surface, and an outer abutting mechanism with an inner cylindrical arc surface is coaxially sleeved on the outside of the inner abutting mechanism. A needle roller receiving cavity is constructed between the outer wall of the inner abutting mechanism and the inner wall of the outer abutting mechanism. The loading mechanism has a first cylindrical end and a second cylindrical end. The outer diameter of the first cylindrical end is the same as the inner diameter of the outer abutment mechanism, and the outer diameter of the second cylindrical end is the same as the outer diameter of the inner abutment mechanism.

[0005] Preferably, both the inner abutment mechanism and the outer abutment mechanism are hollow tubular structures.

[0006] Furthermore, the loading mechanism includes a cylindrical gripping portion, with the first cylindrical end and the second cylindrical end coaxially disposed at both ends of the cylindrical gripping portion.

[0007] Furthermore, the outer diameter of the inner abutment mechanism is set to be the same as the outer diameter of the piston pin.

[0008] This utility model has the following beneficial effects during use: Before assembling the needle roller bearing, the needle rollers are neatly arranged in the needle roller receiving cavity between the inner and outer abutment mechanisms, ensuring that the needle rollers are parallel to the axis of the entire limiting mechanism. During assembly, the entire limiting mechanism and the through hole at the head end of the piston rod are first aligned coaxially, and the outer abutment mechanism is brought into contact with the outer wall of the piston rod. The first cylindrical end of the insertion mechanism is aligned coaxially with the inner abutment mechanism. Then, the insertion mechanism is pushed, allowing the first cylindrical end to extend into the outer abutment mechanism, thereby pushing the inner abutment mechanism, along with the neatly arranged needle rollers, into the connecting rod of the piston rod. Next, the connecting rod is inserted into the piston head. The inner abutment mechanism and the piston pin of the piston head are aligned coaxially, and the piston pin is extended into the piston head, coaxially contacting the inner abutment mechanism. Then, the second cylindrical end pushes the piston pin, causing the inner abutment mechanism to disengage from the connecting rod while the piston pin inserts into the connecting rod. This allows for the accurate assembly of the needle roller bearing and the synchronous assembly of the piston rod, piston cylinder, and needle roller bearing. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the first assembly state of this utility model.

[0010] Figure 2 This is a schematic diagram of the second assembly state of this utility model.

[0011] Among them, 1-connecting rod, 2-piston pin, 3-needle roller, 5-piston head, 6-inner abutment mechanism, 7-outer abutment mechanism, 8-loading mechanism, 9-first cylindrical end, 10-second cylindrical end. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0013] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0015] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please refer to Figure 1 and Figure 2 As shown, a needle roller bearing mounting fixture is characterized by including a limiting mechanism and an insertion mechanism 8; The limiting mechanism includes an inner abutting mechanism 6 with an outer cylindrical arc surface, and an outer abutting mechanism 7 with an inner cylindrical arc surface is coaxially sleeved on the outside of the inner abutting mechanism 6. A needle roller 3 receiving cavity is constructed between the outer wall of the inner abutting mechanism 6 and the inner wall of the outer abutting mechanism 7. The loading mechanism 8 has a first cylindrical end 9 and a second cylindrical end 10. The outer diameter of the first cylindrical end 9 is the same as the inner diameter of the outer abutment mechanism 7, and the outer diameter of the second cylindrical end 10 is the same as the outer diameter of the inner abutment mechanism 6.

[0019] Thus, before assembling the needle roller bearing 3, the needle rollers 3 are neatly arranged in the needle roller 3 receiving cavity between the inner abutment mechanism 6 and the outer abutment mechanism 7, so that the needle rollers 3 are parallel to the axis of the entire limiting mechanism. During the assembly process, the entire limiting mechanism and the through hole at the head end of the piston rod are first aligned coaxially, and the outer abutment mechanism 7 is made to abut against the outer wall of the piston rod. The first cylindrical end 9 of the insertion mechanism 8 is aligned coaxially with the inner abutment mechanism 6. Then, the insertion mechanism 8 is pushed so that the first cylindrical end 9 extends into the outer abutment mechanism 7, thereby pushing the inner abutment mechanism 6, along with the neatly arranged needle rollers 3, into the connecting rod 1 of the piston rod. Then, connecting rod 1 is inserted into piston head 5. The inner abutment mechanism 6 and piston pin 2 of piston head 5 are adjusted to be coaxial. Piston pin 2 is inserted into piston head 5, coaxially abutting with the inner abutment mechanism 6. Then, using the pushing force of the second cylindrical end 10, piston pin 2 pushes the inner abutment mechanism 6, causing the inner abutment mechanism 6 to disengage from connecting rod 1 while piston pin 2 inserts into connecting rod 1. This completes the accurate assembly of needle roller bearing 3 and achieves the synchronous assembly of piston rod, piston cylinder, and needle roller bearing 3.

[0020] Specifically, both the inner abutment mechanism 6 and the outer abutment mechanism 7 are hollow tubular structures.

[0021] Furthermore, the loading mechanism 8 includes a cylindrical gripping portion, with the first cylindrical end 9 and the second cylindrical end 10 coaxially disposed at both ends of the cylindrical gripping portion.

[0022] Meanwhile, the outer diameter of the inner abutment mechanism 6 is the same as the outer diameter of the piston pin 2.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A needle bearing mounting tool characterized by, Includes a limit mechanism and a loading mechanism; The limiting mechanism includes an inner abutting mechanism with an outer cylindrical arc surface, and an outer abutting mechanism with an inner cylindrical arc surface is coaxially sleeved on the outside of the inner abutting mechanism. A needle roller receiving cavity is constructed between the outer wall of the inner abutting mechanism and the inner wall of the outer abutting mechanism. The loading mechanism has a first cylindrical end and a second cylindrical end. The outer diameter of the first cylindrical end is the same as the inner diameter of the outer abutment mechanism, and the outer diameter of the second cylindrical end is the same as the outer diameter of the inner abutment mechanism.

2. The needle roller bearing mounting fixture according to claim 1, characterized in that, Both the inner and outer abutment mechanisms are hollow tubular structures.

3. The needle roller bearing mounting fixture according to claim 1, characterized in that, The loading mechanism includes a cylindrical gripping part, with the first cylindrical end and the second cylindrical end coaxially disposed at both ends of the cylindrical gripping part.

4. A needle roller bearing mounting fixture according to any one of claims 1 to 3, characterized in that, The outer diameter of the inner abutment mechanism is the same as the outer diameter of the piston pin.

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