A kind of mining manual-automatic integral electromagnetic priority valve
Technical field
The utility model belongs to hydraulic-pressure control apparatus technical field under coal mine, especially relates to a kind of mining manual-automatic integral electromagnetic priority valve.
Background technique
At present, under coal mine, hydraulic control device major part is made up of Electromagnetic Control mechanism and mechanical controller structure, in the time that field working conditions can meet "on" position, carry out controlling magnet and coil drives mentioning of valve connecting rod or puts down by electrical signal, thereby control closing and opening of electromagnetic pilot valve.
But, when on-the-spot unregulated power is for seasonable, just need to rely on mechanical controller structure to complete this action, the operation executive mode of mechanical controller structure is by active force is directly acted on to connecting rod, realize the displacement of connecting rod, its operation surface of contact is exposed connecting rod top, and top is equipped with rubber mount to overcome cause because operation pressure is excessive uncomfortable and inconvenient.
The rubber mount using in above-mentioned executive mode not only working life short but also because site operation personnel's operation very easily causes breakage; During simultaneously due to manual operation, cannot ensure the definitely vertical connecting rod of pressing, also can cause certain damage to connecting rod, greatly reduce the working life of overall control mechanism.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of easy to operate mining manual-automatic integral electromagnetic priority valve, is especially applicable to unregulated power supply environment.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of mining manual-automatic integral electromagnetic priority valve, comprises base housing and two groups of pressure lever mechanism,
The bottom of described base housing is used for connecting electromagnetic priority valve;
Described in every group, pressure lever mechanism comprises a depression bar, a push rod and a spring,
On described base housing, be provided with through hole with respect to the connecting rod apical position in electromagnetic priority valve, push rod inserts through hole, and described push rod upper end is provided with pole cap, via bottoms inner edge is provided with the portion of blocking, described spring is arranged on pole cap and blocks between portion, and in the time that pole cap is stressed, push rod compressible spring moves down;
Described depression bar comprises a cam portion and a handling portion, described cam portion contacts with push rod pole cap, the middle position of cam portion is flexibly connected with base housing, can realize depression bar clockwise or be rotated counterclockwise, when cam portion is clockwise or while being rotated counterclockwise, all can make that push rod is stressed to be moved down;
Described cam portion comprises adjacent surface of contact and locking face, described surface of contact is less than the center of rotation distance of locking identity distance cam portion apart from the center of rotation distance of cam portion, when cam portion is during to locking face direction rotation, by push rod, to pressing down, rear locking face contacts with the upper surface of push rod pole cap and in lockup state.
Further, the surface of contact of described cam portion and locking face are plane, arrange in obtuse angle.
Further, the surface of contact of described cam portion and locking face are plane, and surface of contact and locking face connecting part are cambered surface.
Further, described base housing upper surface is provided with joint, and depression bar is connected by bearing pin with joint.
Further, described in two groups, two of pressure lever mechanism depression bar directions are consistent, and the end of handling portion is rounded.
Advantage and the good effect that the utlity model has are:
Realize the auto-manual control function of electromagnetic priority valve, realize self-locking by reverse cam, reached more convenient and practical in the situation that not damaging valve body and carried out mechanically actuated, efficiently solve valve body and manually control difficulty, operate not aspect, the problem such as easy damaged working life is short;
Tool apparatus structure is simple, makes simply, and processing cost is low.
Brief description of the drawings
Fig. 1 is side sectional view of the present utility model;
Fig. 2 is plan view of the present utility model;
Fig. 3 is left view of the present utility model;
Fig. 4 is lockup state schematic diagram of the present utility model;
Fig. 5 is manual pressed status schematic diagram of the present utility model;
Fig. 6 is the connection diagram of the utility model and electromagnetic priority valve.
In figure:
1, base housing 2, electromagnetic priority valve 3, depression bar
4, push rod 5, spring 6, bearing pin
11, joint 31, cam portion 32, handling portion
33, surface of contact 34, locking face
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
As shown in Figures 1 to 6, a kind of mining manual-automatic integral electromagnetic priority valve of the utility model, comprises base housing 1 and two groups of pressure lever mechanism;
The bottom of described base housing 1 is used for connecting electromagnetic priority valve 2, and as shown in Figure 2, concrete mode of execution selects bolt to connect, and base housing 1 the inside is provided with control panel, is connected with electromagnetic priority valve 2 by four screw rods;
Described in every group, pressure lever mechanism comprises a depression bar 3, a push rod 4 and a spring 5,
On described base housing 1, be provided with through hole with respect to the connecting rod apical position in electromagnetic priority valve 2, push rod 4 inserts through hole, described push rod 4 upper ends are provided with pole cap, pole cap part peripheral hardware bearing, push rod 4 contacts with through hole by bearing, and via bottoms inner edge is provided with the portion of blocking, and described spring 5 is arranged on pole cap and blocks between portion, in the time that pole cap is stressed, push rod 4 compressible spring 5 move down;
Described depression bar 3 comprises a cam portion 31 and a handling portion 32, and described cam portion 31 contacts with push rod 4 pole caps, and the middle position of described cam portion is flexibly connected with base housing 1; As shown in Figure 3, embodiment is optional establishes joint 11 at described base housing 1 upper surface, and depression bar 3 is connected by bearing pin 6 with joint 11, and cam portion 31 can rotate relative to base housing 1;
Described cam portion 31 comprises adjacent surface of contact 33 and locking face 34, and described surface of contact 33 is less than the center of rotation distance of locking face 34 apart from cam portion 31 apart from the center of rotation distance of cam portion 31, and range difference determines according to pressing down highly of push rod 4;
As shown in Figure 1, in the time that handling portion 32 does not stress, described surface of contact 33 contacts with the upper surface of push rod 4 pole caps;
As shown in Figure 5, stressed when handling portion 32, under clockwise direction, to press, surface of contact 33 produces downward active force to push rod 4, can realize the manual control disjunction of electromagnetic priority valve;
As shown in Figure 4, stressed during to locking face 34 direction rotation (being rotated counterclockwise) when handling portion 32, by push rod 4, to pressing down, rear locking face 34 contacts with the upper surface of push rod 4 pole caps and in lockup state.
Embodiment is optional, and surface of contact 33 and the locking face 34 of described cam portion 31 are plane, arranges in obtuse angle, and the concrete angle at obtuse angle, determines according to pressing down highly of stressed and push rod 4;
Embodiment is also optional, surface of contact 33 and the locking face 34 of described cam portion 31 are plane, surface of contact 33 and locking face 34 connecting parts are cambered surface, when handling portion 32 stressed during to locking face direction rotation, the upper surface of cambered surface and push rod 4 pole caps seamlessly transits, until locking face 34 contacts with the upper surface of push rod 4 pole caps, and locking;
Described in two groups, two of pressure lever mechanism depression bar 3 directions are consistent, convenient setting, and the end of handling portion is rounded, presses conveniently.
The working procedure of the present embodiment is: as shown in Figure 6, this mechanism is used in conjunction with electromagnetic priority valve 2; When handling portion 32 stressed, press downwards, surface of contact 33 produces downward active force to push rod 4, after push rod 4 is stressed, spring 5 produces deformation simultaneously, promote push rod 4 lower end edges and axially produce displacement, the connecting rod in compression electromagnetic priority valve 2, thereby realize manual crawl control electromagnetic priority valve 2 unlatching liquid;
When by handling portion 32 to locking face 34 direction rotations, can be by push rod 4 in process to pressing down, after push rod 4 is stressed, spring 5 produces deformation simultaneously, promote push rod 4 lower end edges and axially produce displacement, the connecting rod in compression electromagnetic priority valve 2, thereby realize electromagnetic priority valve 2 unlatching liquid; When handling portion 32 contacts with the upper surface of push rod 4 pole caps to locking face 34 direction rotations to locking face 34, in lockup state;
Otherwise, when handling portion 32 is not subject to downward active force or rotates while contacting with push rod 4 to surface of contact 33, push rod 4 is due to the rebound effect of its spring 5 members, make push rod 4 equally in free state, electromagnetic priority valve 2 is not produced to pressure, now electromagnetic priority valve 2 is in closing limited current state, and said process has been realized the ability of the manual control disjunction of electromagnetic priority valve 2.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variation and improvement etc. of doing according to the utility model application range, within all should still belonging to patent covering scope of the present utility model.