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Holder assembly with abnormal-shaped mold face

A cage and special-shaped technology, applied in the hydraulic field, can solve the problems of easy wear, difficult contact position, high contact stress, etc., and achieve the effect of simple structure processing, improved reliability and good manufacturability

Active Publication Date: 2017-08-25
CHINA NORTH VEHICLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the matching method of the conical surface and the spherical surface is a line contact between the cage and the ball bowl, the contact zone is small, the contact stress is high, and it is easy to wear and tear, which makes the rotation unstable and causes locking; the matching method of the concentric spherical surface maintains The contact position between the frame and the ball bowl is difficult to control, which is not conducive to lubrication and heat dissipation, and is also prone to wear and tear, resulting in product damage

Method used

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  • Holder assembly with abnormal-shaped mold face
  • Holder assembly with abnormal-shaped mold face
  • Holder assembly with abnormal-shaped mold face

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Embodiment Construction

[0021] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings and examples.

[0022] In order to solve the above technical problems, such as figure 1 As shown, the present invention provides a cage assembly with a special-shaped profile, which includes a cage 2 and a ball bowl 1;

[0023] The overall inner surface of the cage 2 is divided into three sections of rounded surface section 3, inner spherical surface section 4 and cone angle surface section 5 along the axial direction.

[0024] Such as figure 2 As shown, the fillet profile section 3 is set to its fillet angle to ensure that when the cage 2 and the ball bowl 1 move relative to each other, the cage 2 is prevented from scratching the spherical surface of the ball bowl 1.

[0025] Wherein, the cone angle section 5 is set to its cone angle...

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Abstract

The invention belongs to the hydraulic technical field, and particularly relates to a holder assembly with an abnormal-shaped mold face. The holder assembly comprises a ball bowl and a holder body; according to specific physical design, in the working process of the holder body and the ball bowl, a spherical surface contact zone between the holder body and the ball bowl is a contact strip with a certain width, oil liquid enters the contact zone from a gap between taper angles, a certain initial oil film is formed between the holder body and the ball bowl, meanwhile, a pressure field is formed between two friction pairs, external loading force is balanced, and the holder body and the ball bowl work reliably. Meanwhile, the holder assembly has the beneficial effects that the machining difficulty of the mold face is reduced, the manufacturability is good, and cost is low; and the working stability of the holder assembly is improved.

Description

technical field [0001] The invention belongs to the field of hydraulic technology. In particular, it relates to a cage assembly with a special-shaped profile. Background technique [0002] At present, the hydraulic pump motor closed system has been widely used in vehicles, ships, construction machinery and other industries, and the system integration degree is high. [0003] The cage assembly is the core part of the plunger pump motor. The cage presses the plunger of the sliding shoe on the variable swash plate. When the cylinder rotates, it ensures that the plunger rotates synchronously with the cylinder. At present, the contact surface of the cage and the ball bowl generally adopts the matching mode of the conical surface and the spherical surface and the matching of the concentric spherical surface. Among them, the matching method of the conical surface and the spherical surface is a line contact between the cage and the ball bowl, the contact zone is small, the contact...

Claims

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Application Information

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IPC IPC(8): F04B53/00F04B53/18
CPCF04B53/00F04B53/18
Inventor 吕庆军唐守生于艳秋郭刘洋汪浒江李厚德王涛冀海于定跃梁润华刘敏
Owner CHINA NORTH VEHICLE RES INST