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Piston rod assembly and pushing jack

A piston rod and component technology, applied in the field of moving jack equipment, can solve problems such as high cost, inaccurate readings of displacement sensors, and eccentric holes, and achieve the effects of saving processing and manufacturing costs, reducing processing and manufacturing difficulty, and requiring high control accuracy

Pending Publication Date: 2021-05-28
SANY HEAVY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When processing a deep hole with a small diameter by this process, the processing of the rod body is difficult and costly, and it is prone to hole eccentricity, chip clogging, etc., resulting in inaccurate readings of the displacement sensor

Method used

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  • Piston rod assembly and pushing jack
  • Piston rod assembly and pushing jack
  • Piston rod assembly and pushing jack

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Embodiment Construction

[0036] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0037] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0038] It should be noted that the displacement sensor includes a measuring rod and a magnetic ring 20, and the displacement sensor detects the specific displacement value of the rod body 12' by dete...

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Abstract

The invention provides a piston rod assembly and a pushing jack. The piston rod assembly comprises a rod body and a magnetic ring installation seat, wherein the rod body is provided with an outer end, a stepped hole which is formed in the axial direction of the rod body is formed in the end surface of the outer end, and comprises a test hole and an installation hole which communicates with the test hole, and the test hole is farther away from the end surface of the outer end relative to the installation hole; the hole diameter of the test hole is less than that of the installation hole; and the magnetic ring installation seat is arranged in the installation hole, a step surface is formed between the test hole and the installation hole, and the magnetic ring installation seat abuts against the step surface. In the technical scheme of the invention, due to the fact that the magnetic ring installation seat is arranged and used for installing a magnetic ring, compared with a piston rod assembly in the related technology, when the magnetic ring of the same size is installed, the diameter of a deep hole used for installing a measuring rod of a sensor, in the stepped hole can be designed to be larger. In this way, a gun drilling process can be replaced by a deep hole boring process, so that the deep hole machining difficulty and cost are reduced, and meanwhile, the deep hole machining precision is improved.

Description

technical field [0001] The invention relates to the technical field of push jack equipment, in particular to a piston rod assembly and a push jack. Background technique [0002] At present, the deep hole of the rod body of the piston rod assembly of the push jack in the related art is mostly processed by gun drilling equipment, and the tail end of the rod body needs to be processed with a magnetic ring mounting groove and an internal thread. When processing a deep hole with a small diameter by this process, the processing of the rod body is difficult and costly, and it is prone to hole eccentricity, chip clogging, etc., resulting in inaccurate readings of the displacement sensor. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art. [0004] To this end, an object of the present invention is to provide a piston rod assembly. [0005] Another object of the present invention i...

Claims

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Application Information

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IPC IPC(8): F16J7/00B66F3/25
CPCB66F3/25F16J7/00
Inventor 关闯姜仁坤张志飞
Owner SANY HEAVY EQUIP
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