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Handheld hydraulic tool

A hydraulic tool and hydraulic technology, applied in the field of hydraulic tools, can solve the problems of high processing cost and complex structure of electric hydraulic tools, and achieve the effect of simple structure

Active Publication Date: 2016-09-07
CHINA CREC RAILWAY ELECTRIFICATION BUREAU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem with this electro-hydraulic tool is that the installation of the plug is to open an installation cavity on the body of the electro-hydraulic tool, and the plug must be located in the oil circuit of the oil drain and connected to the handle outside the body. Make the structure of the electrohydraulic tool complex and the processing cost higher

Method used

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  • Handheld hydraulic tool
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The hand-held hydraulic tool includes a cylinder body 1, an oil storage cylinder 15, a hydraulic working head 16, a hydraulic chamber 2, an oil inlet channel 3, an oil return channel 4, an oil delivery mechanism 14, a pressure relief valve chamber 5, a floating pressure relief valve core 6, The liquid passage hole 7, the oil return passage 8, the communication through hole 6a, the plugging head 6b and the elastic member 9.

[0036] Such as figure 1 and figure 2 As shown, the hydraulic chamber 2 is located in the cylinder body 1, the hydraulic working head 16 is installed on the cylinder body 1 and connected with the hydraulic chamber 2, and the oil inlet channel 3 is used to deliver the hydraulic oil in the oil storage cylinder 15 to the hydraulic chamber 2, The oil return channel 4 is a passage for the hydraulic oil in the hydraulic chamber 2 to return to the oil storage cylinder 15 . Such as figure 1 and Figure 4 As shown, the oil delivery mechanism 14 is arrang...

Embodiment 2

[0044] The technical solution in this embodiment is basically the same as that in Embodiment 1, the difference is that in this embodiment, the cylinder body 1 adopts an integral structure.

Embodiment 3

[0046] Compared with the technical solution in the first embodiment, the cylinder body 1 also adopts a split structure, the difference is that in this embodiment, the installation port 5c and the oil return plug 10 are not provided. In order to install the floating pressure relief valve core 6 into the pressure relief valve chamber 5, the cylinder body 1 is divided into a front cylinder body and a rear cylinder body. The front cylinder body has a partition, and the hydraulic chamber 2 is located in the front of the partition. The rear part of the partition part has a cavity one, and the front part of the rear cylinder has a cavity two corresponding to the position and shape of the above cavity one, and the front cylinder and the rear cylinder are fixedly connected so that the cavity one and the two cavity are connected A pressure relief valve cavity 5 is formed, and the liquid passage hole 7 and the oil return circuit 8 are all located on the partition part.

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PUM

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Abstract

The invention provides a handheld hydraulic tool, belongs to the technical field of hydraulic tools, and solves the problem that a conventional electric hydraulic tool is complex in structure. The handheld hydraulic tool comprises a cylinder body, an oil storage cylinder and a hydraulic work head, wherein a pressure relief valve cavity is formed in the cylinder body; a floating pressure relief valve core capable of sliding in the pressure relief valve cavity is arranged in the pressure relief valve cavity; the pressure relief valve cavity is divided into a left cavity chamber and a right cavity chamber in such a manner that the contact surfaces of the floating pressure relief valve core and the pressure relief valve cavity are sealed; an oil inlet channel unilaterally communicates with the left cavity chamber; the cylinder body comprises liquid through holes and an oil return path; the liquid through holes are used for communicating the right cavity chamber with a hydraulic cavity; the oil return path is used for communicating the right cavity chamber with an oil return channel; the floating pressure relief valve core comprises a communicating through hole and a blocking head; the communicating through hole is used for communicating the left cavity chamber with the right cavity chamber; the blocking head extends into the right cavity chamber and can be used for blocking the oil inlet of the oil return path; and an elastic part capable of acting on the floating pressure relief valve core to separate the blocking head from the oil inlet of the oil return path is arranged in the right cavity chamber.

Description

technical field [0001] The invention belongs to the technical field of hydraulic tools, and relates to a hand-held hydraulic tool. Background technique [0002] Hand-held hydraulic tools are currently the most portable hydraulic tools that can be operated with one hand and are usually rechargeable. Hand-held hydraulic tools can realize functions such as cutting and crimping. They are fast, lightweight and durable, and are widely welcomed by the market. [0003] Existing hand-held hydraulic tools, for example, an electro-hydraulic tool disclosed in Chinese patent [Application No. 201210578428.5; Authorized Notification No. CN103072124B], includes a body and a hydraulic working end on the body. There is an oil cylinder and an oil storage chamber in the body, and the oil cylinder It communicates with the oil storage chamber through an oil circuit. The main body also has a pressurizing mechanism that can press the power oil in the oil storage chamber into the oil cylinder. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25F5/00
CPCB25F5/00
Inventor 陈瑞峰
Owner CHINA CREC RAILWAY ELECTRIFICATION BUREAU GRP