Hydraulic wire crimping connector change-over valve
A technology of wire crimping and reversing valve, which is applied in the direction of connection, mechanical equipment, fluid pressure actuating device, etc. It can solve the problems of automatic oil return and effective saving of manpower, etc., and achieve the effect of simple operation and manpower saving
Inactive Publication Date: 2009-09-02
常熟市常福电力机具有限公司
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Problems solved by technology
[0003] In summary, the known reversing valve has the following disadvantages: the one, it cannot effectively save manpower, and the other, it cannot automatically return oil when there is no pressure
Method used
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[0018] Please refer to figure 1 and figure 2 , these two figures show the preferred but non-limiting or non-unique reversing valve structure of the specific embodiment of the present invention. In the following statements, all directions and positions are based on the present The state shown in the picture shall prevail. The four corners of the preferably rectangular valve body 1 are preset with installation holes 42, through which the valve body 1 can be fixed to the preset reversing valve seat on the upper part of the high-pressure oil pump of the hydraulic wire crimping machine This can be clearly understood by means of CN2626093Y and 2742641Y mentioned by the applicant in the background technology column. Considering the reasonable distribution factors of each oil passage and oil return passage on the valve body 1 and the situation that the valve stem 17 must be centered, the first and second oil passages 3, 5 and the oil return passage 10 are opened near the valve body...
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A reversing valve of a hydraulic wire crimping machine. It includes a valve body, which is provided with the first and second oil passages, the oil return passage, the first, second and third oil tanks and the low-pressure oil outlet passage, and the first and second oil passages communicate with the first and second oil tanks , and the second oil passage communicates with the oil return passage and the oil inlet hole on the valve body respectively, and the third oil groove communicates with the low-pressure oil outlet passage; Three oil return holes and high and low pressure oil positioning grooves, the first oil return hole communicates with the oil tank and the second oil return hole, the high and low pressure oil positioning grooves are set on the stem body of the valve stem; a pair of high and low pressure oil outlets The interface is fixed on the valve body and communicates with the first oil passage and the low-pressure oil outlet respectively; a pair of high-pressure and low-pressure safety valves are arranged on the valve body, the high-pressure oil return hole communicates with the oil return passage, and the low-pressure safety valve The valve communicates with the third oil tank; a valve stem actuator for positioning the valve stem. Advantages: easy to operate, can save manpower; can automatically return oil when there is no pressure.
Description
technical field [0001] The invention relates to a reversing valve of a hydraulic wire crimping machine, which is an improvement on the structure of the reversing valve of the hydraulic wire crimping machine in the prior art. Background technique [0002] In the construction or maintenance of power transmission and distribution lines, it is necessary to use a hydraulic wire crimping machine for connection or reinforcement. For hydraulic wire crimping machines, the known hydraulic wire crimping machines are recommended by Chinese patent authorization announcements CN2626093Y and CN2742641Y respectively. Machine, which is composed of: crimping pliers, power head, reversing valve and hydraulic pump station, the reversing valves used in the above-mentioned patented technology are all three-position four-way reversing valves, which can be obtained from the fourth page of the instruction manual of CN2626093Y Go to the first paragraph of page 5. From the description of Figure 5, it ...
Claims
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IPC IPC(8): F15B13/02H01R43/048
Inventor 邹栋梁张永明王炯秀
Owner 常熟市常福电力机具有限公司