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Solenoid directional valve and push rod and armature structure thereof

A technology of electromagnetic reversing valve and push rod, which is applied in the direction of valve details, multi-way valves, valve devices, etc., and can solve problems such as reducing product reliability, qualitative changes of push rod and armature, and affecting the normal operation of electromagnetic reversing valves. Achieve the effect of overcoming cracking and improving reliability

Active Publication Date: 2016-09-21
CHANGZHOU KANGSHIDA ELECTROMECHANICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The electromagnetic reversing valve used in existing engineering vehicles (forklifts, tractors, loaders, etc.) includes a valve body assembly and an electromagnet assembly, wherein the electromagnet assembly includes a push rod armature structure, and the push rod armature structure Including the push rod and the armature, and the push rod and the armature are connected with a right-handed thread or welded together, and the two connection methods of the push rod and the armature have certain shortcomings. If the push rod and the armature are connected with a right-handed thread, the electromagnetic Under the working condition of the reversing valve, during the axial movement of the spool of the valve body assembly, due to the action of the oil pressure in the valve body of the valve body assembly, the spool rotates counterclockwise, and the spool rotates counterclockwise During the process, the cylindrical pin will drive the push rod to rotate counterclockwise with the spool. In this way, it will cause the push rod and the armature to become loose due to the counterclockwise rotation of the push rod, so that the push rod and the armature will The occurrence of separation has seriously affected the normal operation of the electromagnetic reversing valve; if the push rod and the armature are welded together, although the separation of the push rod and the armature will be overcome, welding the push rod and the armature will easily cause cracks at the weld situation, and will lead to qualitative changes in the push rod and armature, will also greatly reduce the reliability of product work

Method used

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  • Solenoid directional valve and push rod and armature structure thereof
  • Solenoid directional valve and push rod and armature structure thereof
  • Solenoid directional valve and push rod and armature structure thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Such as Figure 9 , 10 11, a push rod armature structure of an electromagnetic reversing valve, including a push rod 4-3-2 and an armature 4-3, one end of the push rod 4-3-2 has a spool connecting section 4-3 -21, the other end of the push rod 4-3-2 has an armature connection section 4-3-22, and the valve core connection section 4-3-21 of the push rod 4-3-2 is provided with a push rod radial pin The hole 4-3-23, the armature connection section 4-3-22 of the push rod 4-3-2 has a left-hand thread, one end of the armature 4-3 has a left-hand screw hole, and the push rod 4-3 -2 The left-handed thread of the armature connecting section 4-3-22 is connected with the left-handed screw hole at one end of the armature 4-3 as a left-handed thread.

[0053] Such as Figure 9 , 10 , 11, the push rod 4-3-2 has a stopper 5 integrated with it, and the stopper 5 is offset against the armature 4-3, due to the integrated structure of the push rod and the stopper, On the one hand, the...

Embodiment 2

[0056] Such as Figure 1~20 As shown, an electromagnetic reversing valve includes a valve body assembly and an electromagnet assembly; the valve body assembly includes a valve body 1, a valve core 2 and a valve body end cover 3;

[0057] The valve body 1 includes a first oil port 1-4, a second oil port 1-5, an oil return port 1-6, an oil inlet port 1-7 and a valve body main hole 1-8 arranged along its axial direction , and the first oil passage 1-1, the second oil passage 1-2 and the third oil passage 1-3 arranged axially along the inner wall of the main hole 1-8 of the valve body, the first oil passage 1-4 It communicates with the first oil passage 1-1, the second oil port 1-5 communicates with the third oil passage 1-3, the oil inlet 1-7 communicates with the second oil passage 1-2, and the first The oil passage 1-1, the second oil passage 1-2 and the third oil passage 1-3 are all connected with the main hole 1-8 of the valve body;

[0058] The valve body 1 is provided wit...

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Abstract

The invention relates to a solenoid directional valve and a push rod and armature structure thereof. The push rod and armature structure comprises a push rod and an armature, wherein a valve element connecting section is arranged at one end of the push rod; an armature connecting section is arranged at the other end of the push rod; and a push rod radial pin hole is formed in the valve element connecting section of the push rod. The push rod and armature structure is characterized in that the armature connecting section of the push rod is provided with left-hand threads, a left-hand threaded hole is formed in one end of the armature, and the left-hand threads of the armature connecting section of the push rod is in left-hand thread connection with the left-hand threaded hole in one end of the armature. By the push rod and armature structure, the push rod is effectively prevented against being separated from the armature, the long-time existing circumstance that the push rod and the armature in the prior art are separated from each other due to counterclockwise rotation of the push rod is avoided, furthermore, the long-time existing circumstance of cracking caused by the reason that the push rod and the armature are welded integrally in the prior art is avoided, and therefore, work reliability is greatly improved.

Description

technical field [0001] The invention relates to an electromagnetic reversing valve and its push rod armature structure, in particular to a push rod armature structure of an electromagnetic reversing valve used on an engineering vehicle. Background technique [0002] The electromagnetic reversing valve used in existing engineering vehicles (forklifts, tractors, loaders, etc.) includes a valve body assembly and an electromagnet assembly, wherein the electromagnet assembly includes a push rod armature structure, and the push rod armature structure Including the push rod and the armature, and the push rod and the armature are connected with a right-handed thread or welded together, and the two connection methods of the push rod and the armature have certain shortcomings. If the push rod and the armature are connected with a right-handed thread, the electromagnetic Under the working condition of the reversing valve, during the axial movement of the spool of the valve body assembl...

Claims

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Application Information

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IPC IPC(8): F16K31/06F16K11/07
CPCF16K11/07F16K31/0613F16K31/0675
Inventor 王小康岳烨冬盛建新
Owner CHANGZHOU KANGSHIDA ELECTROMECHANICAL CO LTD
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