阅读说明：本技术 一种液压用防爆泄压直动式电磁阀系统 (Explosion-proof pressure release direct-acting solenoid valve system for hydraulic pressure ) 是由 惠雪利 姬晓军 吉小栋 于 2020-12-30 设计创作，主要内容包括：本发明涉及电磁阀装置技术领域,公开了一种液压用防爆泄压直动式电磁阀系统,通过电机与输入轴等的设置,实现液压系统的液压功能,通过压力盘等的设置,使得控制中心控制启动电源,继而使得多匝线圈通电产生磁场,在铁芯的加强磁场作用下,磁芯向一侧移动,继而间接带动阀门向一侧打开,从而使得水平溢流管内的液压油进入至垂直溢流管内,继而实现减小液压管道内的压力,防止油管发生爆裂等危险情况的发生,通过驱动信号器与驱动控制线等的设置,控制中心控制电机停止转动或反向转动,使得液压油停止流动或反向原路返回至液压油箱内,也能有效地防止了管道内压力增大撑破管道,提高了整个液压系统的安全性。(The invention relates to the technical field of electromagnetic valve devices, and discloses an explosion-proof pressure-relief direct-acting electromagnetic valve system for hydraulic pressure, which realizes the hydraulic function of a hydraulic system by arranging a motor, an input shaft and the like, enables a control center to control a starting power supply by arranging a pressure disc and the like, enables a multi-turn coil to be electrified to generate a magnetic field, and under the action of an enhanced magnetic field of an iron core, a magnetic core moves to one side to indirectly drive a valve to open to one side so as to enable hydraulic oil in a horizontal overflow pipe to enter a vertical overflow pipe, further realizes the reduction of the pressure in a hydraulic pipeline and prevents the occurrence of dangerous conditions such as explosion of the oil pipe, and the control center controls the motor to stop rotating or reversely rotating by arranging a driving annunciator, a driving control line and the like, so that the hydraulic oil stops flowing or a reverse primary path returns to a hydraulic oil tank, and can also, the safety of the whole hydraulic system is improved.)

1. The utility model provides an explosion-proof pressure release direct action type solenoid valve system for hydraulic pressure, includes hydraulic tank (1), its characterized in that: the hydraulic oil tank is characterized in that the gear box (2) is fixedly connected to the top of the hydraulic oil tank (1), the vertical guide pipe (3) is fixedly connected to the inner wall of the top of the hydraulic oil tank (1), one end of the vertical guide pipe (3) is connected with the hydraulic oil tank (1), the other end of the vertical guide pipe is connected with the gear box (2), the oil outlet pipe (10) is fixedly connected to the top of the gear box (2), the base (11) is fixedly connected to the top of the hydraulic oil tank (1), the hydraulic cylinder (12) is fixedly connected to the top of the base (11), the horizontal guide pipe (13) is fixedly connected to one end of the hydraulic cylinder (12), the horizontal guide pipe (13) is communicated with the oil pipe (10), the hydraulic push rod (14) is fixedly connected to one end of the hydraulic cylinder (12), the hydraulic push plate (15) is fixedly connected to one end of the horizontal guide, the position of the hydraulic push disc (15) corresponds to the position of the hydraulic push rod (14), and one end of the hydraulic push rod (14) is fixedly connected with a hydraulic disc (16); one end of the horizontal guide pipe (13) is fixedly connected with a horizontal overflow pipe (17), one side of the horizontal overflow pipe (17) is provided with an overflow hole, one side of the horizontal overflow pipe (17) is fixedly connected with a vertical overflow pipe (18), the position of the vertical overflow pipe (18) corresponds to the position of the overflow hole and is communicated with the overflow hole, one end of the vertical overflow pipe (18) extends into the hydraulic oil tank (1), and one end of the horizontal overflow pipe (17) is fixedly connected with a winding sleeve (19); a valve (20) is arranged at the top end of the vertical overflow pipe (18), the valve (20) is positioned in the horizontal overflow pipe (17) and corresponds to the position of the overflow hole, one end of the valve (20) is fixedly connected with a control rod (21), one end of the control rod (21) extends into the winding sleeve (19), one side of the control rod (21) is fixedly sleeved with a return spring (22), and two ends of the return spring (22) are respectively connected with the valve (20) and the winding sleeve (19); an annular groove (23) is formed in one end of the control rod (21), a linkage cavity (24) is formed in the control rod (21), the annular groove (23) is communicated with the linkage cavity (24), the annular groove (23) and the linkage cavity (24) are internally provided with the same connecting rod (25), one end of the connecting rod (25) penetrates through the annular groove (23) and extends to the outer side, one end of the connecting rod (25) is fixedly connected with a connecting disc (26), and the connecting disc (26) is located in the linkage cavity (24); a magnetic core (27) is fixedly connected to the other end of the connecting rod (25), a top disc (28) and a wire winding disc (29) are fixedly connected to one side of the wire winding sleeve (19), a multi-turn coil (30) is arranged on one side, close to the top disc (28) and the wire winding disc (29), of the wire winding sleeve (19), an iron core (31) is fixedly sleeved at one end of the wire winding sleeve (19), one end of the iron core (31) extends out of one end of the wire winding sleeve (19), and the other end of the iron core (31) corresponds to the magnetic core (27); the top of the hydraulic oil tank (1) is fixedly connected with a load power supply (32), the inner wall of one side of the horizontal guide pipe (13) is provided with two sliding grooves (33), a pressure disc (34) is arranged in the horizontal guide pipe (13), one side of the pressure disc (34) is fixedly connected with two convex blocks (35), the positions of the two convex blocks (35) respectively correspond to the positions of the two sliding grooves (33) and are matched with the two sliding grooves, and one end of the pressure disc (34) is fixedly connected with a plurality of uniformly distributed through holes (36); three connecting rod (37) of one side inner wall fixedly connected with of horizontal pipe (13), it is three one end fixedly connected with same fixed disk (38) that connecting rod (37) are close to each other, the position of fixed disk (38) with the position of pressure dish (34) is corresponding, one end fixedly connected with pressure sensor (39) that fixed disk (38) are close to pressure dish (34), pressure sensor (39) with one end fixedly connected with is same extrusion spring (40) that pressure dish (34) are close to each other.

2. The explosion-proof pressure relief direct-acting solenoid valve system for hydraulic pressure according to claim 1, characterized in that: the top of the hydraulic oil tank (1) is provided with a round hole, one end of the vertical guide pipe (3) is communicated with the round hole, the gear box (2) is internally provided with a sealed cavity (4), the top of the hydraulic oil tank (1) is fixedly connected with a base (5), the top of the base (5) is fixedly connected with a motor (6), the output end of the motor (6) is fixedly connected with a shaft coupling, one end of the shaft coupling is fixedly connected with an input shaft (7), one side wall of the gear box (2) close to the input shaft (7) is provided with a rotary hole, the rotary hole is communicated with the sealed cavity (4), one end of the input shaft (7) penetrates through the rotary hole and extends into the sealed cavity (4), one end of the input shaft (7) is fixedly connected with a driving gear (8), one side of the driving gear (8) is provided with a driven gear which is meshed with the driven gear, and a driving annunciator (9) is arranged on one side of the base (5).

3. The hydraulic explosion-proof pressure relief direct-acting solenoid valve system according to claim 2, wherein: the top fixedly connected with control center (41) of hydraulic tank (1), the one end electric connection of control center (41) has pressure conduction line (42), the one end of pressure conduction line (42) with one side electric connection of pressure sensor (39), one side electric connection of control center (41) has two power control lines (43), two the other end of power control line (43) with load power (32) electric connection.

4. The hydraulic explosion-proof pressure relief direct-acting solenoid valve system according to claim 3, wherein: the opposite side electric connection of control center (41) has drive control line (44), the other end of drive control line (44) with drive signal ware (9) electric connection, spacing dish (45) of fixedly connected with in horizontal overflow pipe (17), one side of control lever (21) with a side inner wall of spacing dish (45) is laminated mutually.

Technical Field

The invention relates to the technical field of solenoid valve devices, in particular to an explosion-proof pressure relief direct-acting solenoid valve system for hydraulic pressure.

Background

The electromagnetic valve is industrial equipment controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, is not limited to hydraulic pressure and pneumatic pressure, is used for adjusting the direction, flow, speed and other parameters of a medium in an industrial control system, can be matched with different circuits to realize expected control, and can ensure the control precision and flexibility; the gear pump is a rotary pump which can transfer liquid or pressurize it by means of the change and movement of working volume formed between pump cylinder and meshed gear, and is formed from two gears, pump body and front and rear covers, when the gear is rotated, the volume of space of gear disengagement side is changed from small to large, and formed into vacuum to suck liquid, and the volume of space of gear meshing side is changed from large to small to squeeze liquid into pipeline, and the suction cavity and discharge cavity are separated by means of meshing line of two gears.

Among the prior art, the gear pump can lead to the danger that oil pipe explodes and splits in case internal pressure is too big at the during operation, and the mode that most gear pumps all adopted mechanical pressure release prevents that gear pump pressure from being too big emergence explosion danger, it can improve the security of gear pump greatly to control the oil pressure with parts such as solenoid valve and pressure sensor to change traditional mechanical pressure release, realize fine pressure release purpose, take place danger such as oil pipe explosion when effectively avoiding gear pump hydraulic pressure, and through mutually supporting of motor and controller, can control motor antiport or stall when gear pump hydraulic pressure is too big, then further ensure can not take place the emergence of the too big circumstances such as damage to whole device of hydraulic pressure, therefore, we disclose a hydraulic pressure with explosion-proof pressure release direct-acting solenoid valve system.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an explosion-proof pressure relief direct-acting electromagnetic valve system for hydraulic pressure, which has the advantages of accurately controlling the pressure relief of liquid oil and the like and solves the problems of explosion prevention and the like of a hydraulic system.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: an explosion-proof pressure relief direct-acting electromagnetic valve system for hydraulic pressure comprises a hydraulic oil tank, wherein a round hole is formed in the top of the hydraulic oil tank, a gear box is fixedly connected to the top of the hydraulic oil tank, a vertical guide pipe is fixedly connected to the inner wall of the top of the hydraulic oil tank, one end of the vertical guide pipe is communicated with the round hole, a sealed cavity is formed in the gear box, a base is fixedly connected to the top of the hydraulic oil tank, a motor is fixedly connected to the top of the base, a coupler is fixedly connected to the output end of the motor, an input shaft is fixedly connected to one end of the coupler, a rotary hole is formed in the side wall, close to the input shaft, of the gear box, and is communicated with the sealed cavity, one end of the input shaft penetrates through the rotary hole and extends into the sealed cavity, a driving gear, one side of the driving gear is provided with a driven gear which is meshed with the driving gear, one side of the base is provided with a driving annunciator, the top of the gear box is fixedly connected with an oil outlet pipe, one end of the oil outlet pipe corresponds to the position of the round hole and is communicated with the round hole and the sealed cavity, and the top of the hydraulic oil tank is fixedly connected with a base.

Preferably, the top fixedly connected with pneumatic cylinder of base, the horizontal pipe of one end fixedly connected with of pneumatic cylinder, the one end fixedly connected with hydraulic rod of pneumatic cylinder, the one end fixedly connected with hydraulic pressure of horizontal pipe pushes away the dish, hydraulic pressure pushes away the dish and is located in the pneumatic cylinder, the position that hydraulic pressure pushed away the dish with hydraulic rod's position is corresponding, hydraulic rod's one end fixedly connected with hydraulic pressure dish.

Preferably, one end of the horizontal guide pipe is fixedly connected with a horizontal overflow pipe, one side of the horizontal overflow pipe is provided with an overflow hole, one side of the horizontal overflow pipe is fixedly connected with a vertical overflow pipe, the position of the vertical overflow pipe corresponds to the position of the overflow hole and is communicated with the overflow hole, one end of the vertical overflow pipe extends into the hydraulic oil tank, and one end of the horizontal overflow pipe is fixedly connected with a winding sleeve.

Preferably, a valve is arranged at the top end of the vertical overflow pipe, the valve is positioned in the horizontal overflow pipe and corresponds to the position of the overflow hole, one end of the valve is fixedly connected with a control rod, one end of the control rod extends into the winding sleeve, a reset spring is fixedly sleeved on one side of the control rod, and two ends of the reset spring are respectively connected with the valve and the winding sleeve.

Preferably, an annular groove is formed in one end of the control rod, a linkage cavity is formed in the control rod, the annular groove is communicated with the linkage cavity, the annular groove and the linkage cavity are internally provided with the same connecting rod, one end of the connecting rod penetrates through the annular groove and extends to the outer side, one end of the connecting rod is fixedly connected with a connecting disc, and the connecting disc is located in the linkage cavity.

Preferably, the other end fixedly connected with magnetic core of connecting rod, one side fixedly connected with of wire winding cover top dish and wire reel, top dish with one side that the wire reel is close to each other is equipped with many turns coil, the fixed cover of one end of wire winding cover has connect the iron core, the one end of iron core extends to outside the one end of wire winding cover, the other end of iron core with the magnetic core is corresponding.

Preferably, the top of the hydraulic oil tank is fixedly connected with a load power supply, the inner wall of one side of the horizontal conduit is provided with two sliding grooves, a pressure plate is arranged in the horizontal conduit, one side of the pressure plate is fixedly connected with two convex blocks, the positions of the two convex blocks correspond to the positions of the two sliding grooves respectively and are matched with the two convex blocks, and one end of the pressure plate is fixedly connected with a plurality of through holes which are uniformly distributed.

Preferably, the inner wall of one side of horizontal pipe is fixedly connected with three connecting rods, and is three the same fixed disk of one end fixedly connected with that the connecting rod is close to each other, the position of fixed disk with the position of pressure disc is corresponding, the one end fixedly connected with pressure sensor that the fixed disk is close to the pressure disc, pressure sensor with the same extrusion spring of one end fixedly connected with that the pressure disc is close to each other.

Preferably, the top of the hydraulic oil tank is fixedly connected with a control center, one end of the control center is electrically connected with a pressure conduction line, one end of the pressure conduction line is electrically connected with one side of the pressure sensor, one side of the control center is electrically connected with two power control lines, and the other end of each power control line is electrically connected with the load power supply.

Preferably, the other side electric connection of control center has drive control line, drive control line's the other end with drive signal ware electric connection, the intraductal fixedly connected with spacing dish of horizontal overflow, one side of control lever with the laminating of one side inner wall of spacing dish mutually.

(III) advantageous effects

Compared with the prior art, the invention provides an explosion-proof pressure relief direct-acting solenoid valve system for hydraulic pressure, which has the following beneficial effects:

1. this explosion-proof pressure release direct action type solenoid valve system for hydraulic pressure, through the setting of pressure disc, when the oil pressure in horizontal pipe and the pneumatic cylinder is too big, the pressure disc can take place to remove to one side, then constantly extrudees pressure sensor under extrusion spring's effect for pressure sensor passes through pressure conduction line and conducts pressure data to control center, thereby makes control center send corresponding control command to load power and motor through power control line and drive control line.

2. This explosion-proof pressure release direct action type solenoid valve system for hydraulic pressure, through the setting of power control line and load power, when pressure in the pipeline is too big, load power starts the power under control center's control action, then make multiturn coil circular telegram produce magnetic field, under the reinforcing magnetic field effect of iron core, the magnetic core is to one side removal, then indirectly drive the valve and open to one side, thereby make the intraductal hydraulic oil of horizontal overflow get into to the vertical overflow intraductal, then realize reducing the pressure in the hydraulic pressure pipeline, prevent that oil pipe from taking place the emergence of dangerous condition such as bursting.

3. This explosion-proof pressure release direct action type solenoid valve system for hydraulic pressure, through the setting of drive signal ware and drive control line, when the oil pressure in the pipeline was too big, control center in with antiport or stall signal transmission to the motor to control motor stall or antiport, make in horizontal pipe and the hydraulic cylinder hydraulic oil stop flow or reverse original route return to hydraulic tank, also can prevent effectively that the pipeline is propped up to the increase of intraductal pressure, improved whole hydraulic system's security.

4. This explosion-proof pressure release direct action type solenoid valve system for hydraulic pressure through the setting of top dish and wire reel, conveniently with the multiturn coil winding on the wire winding cover, through the setting of interlock chamber and connecting rod, makes things convenient for the magnetic core to remove and indirectly drives the valve and removes to realize the control action of valve, through the setting of iron core, strengthened the magnetic field intensity that multiturn coil produced, ensure the normal operating of solenoid valve body.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of a first perspective of the present invention;

FIG. 3 is a schematic view of a second perspective cutaway view of the present invention;

FIG. 4 is a schematic perspective view of a portion of the present invention;

FIG. 5 is a schematic view of the present invention in a partially cut away perspective configuration;

FIG. 6 is a schematic cross-sectional view of a horizontal duct of the present invention;

FIG. 7 is a schematic perspective view of a pressure plate according to the present invention;

FIG. 8 is a partially cut-away perspective view of a horizontal overflow pipe of the present invention;

FIG. 9 is a schematic view of a partially cut-away perspective view of a solenoid valve according to the present invention;

fig. 10 is a schematic perspective view of the valve of the present invention.

In the figure: 1. a hydraulic oil tank; 2. a gear case; 3. a vertical duct; 4. sealing the cavity; 5. a base; 6. a motor; 7. an input shaft; 8. a driving gear; 9. a drive signal generator; 10. an oil outlet pipe; 11. a base; 12. a hydraulic cylinder; 13. a horizontal conduit; 14. a hydraulic push rod; 15. a hydraulic push disc; 16. a hydraulic disc; 17. a horizontal overflow pipe; 18. a vertical overflow pipe; 19. a winding sleeve; 20. a valve; 21. a control lever; 22. a return spring; 23. an annular groove; 24. a linkage cavity; 25. a connecting rod; 26. a connecting disc; 27. a magnetic core; 28. a top tray; 29. a wire spool; 30. a coil; 31. an iron core; 32. a load power supply; 33. a chute; 34. a pressure disc; 35. a bump; 36. a through hole; 37. a connecting rod; 38. fixing the disc; 39. a pressure sensor; 40. a compression spring; 41. a control center; 42. a pressure conducting wire; 43. a power supply control line; 44. a drive control line; 45. a limiting disc.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As described in the background of the invention, the prior art has shortcomings, and in order to solve the above technical problems, the present application provides an explosion-proof pressure relief direct-acting solenoid valve system for hydraulic pressure.

In a typical embodiment of the present application, as shown in fig. 1-10, an explosion-proof pressure-relief direct-acting electromagnetic valve system for hydraulic pressure comprises a hydraulic oil tank 1, a circular hole is formed at the top of the hydraulic oil tank 1, a gear box 2 is fixedly connected to the top of the hydraulic oil tank 1, a vertical conduit 3 is fixedly connected to the inner wall of the top of the hydraulic oil tank 1, one end of the vertical conduit 3 is communicated with the circular hole, a sealed cavity 4 is formed in the gear box 2, a base 5 is fixedly connected to the top of the hydraulic oil tank 1, a motor 6 is fixedly connected to the top of the base 5, a coupler is fixedly connected to the output end of the motor 6, an input shaft 7 is fixedly connected to one end of the coupler, a rotary hole is formed in a side wall of the gear box 2, which is close to the input shaft 7, the rotary hole is communicated with the sealed cavity 4, one end of the input shaft 7, one side of the driving gear 8 is provided with a driven gear which is meshed with the driving gear, one side of the base 5 is provided with a driving annunciator 9, the top of the gear box 2 is fixedly connected with an oil outlet pipe 10, one end of the oil outlet pipe 10 corresponds to the position of the round hole and is communicated with the round hole and the sealing cavity 4, and the top of the hydraulic oil tank 1 is fixedly connected with a base 11.

Further, in the above scheme, a hydraulic cylinder 12 is fixedly connected to the top of the base 11, a horizontal guide pipe 13 is fixedly connected to one end of the hydraulic cylinder 12, a hydraulic push rod 14 is fixedly connected to one end of the hydraulic cylinder 12, a hydraulic push plate 15 is fixedly connected to one end of the horizontal guide pipe 13, the hydraulic push plate 15 is located in the hydraulic cylinder 12, the position of the hydraulic push plate 15 corresponds to the position of the hydraulic push rod 14, a hydraulic plate 16 is fixedly connected to one end of the hydraulic push rod 14, and the hydraulic system does work outwards through the arrangement of the hydraulic plate 16.

Further, in the above scheme, the one end fixedly connected with horizontal overflow pipe 17 of horizontal pipe 13, the overflow hole has been seted up to one side of horizontal overflow pipe 17, one side fixedly connected with perpendicular overflow pipe 18 of horizontal overflow pipe 17, the position of perpendicular overflow pipe 18 is corresponding and be linked together with the position in overflow hole, the one end of perpendicular overflow pipe 18 extends to in the hydraulic tank 1, the one end fixedly connected with winding cover 19 of horizontal overflow pipe 17, through the setting of winding cover 19, make multiturn number coil 30 conveniently twine fixedly.

Further, in the above scheme, the top end of the vertical overflow pipe 18 is provided with a valve 20, the valve 20 is located in the horizontal overflow pipe 17 and corresponds to the position of the overflow hole, one end of the valve 20 is fixedly connected with a control rod 21, one end of the control rod 21 extends into the winding sleeve 19, one side of the control rod 21 is fixedly sleeved with a return spring 22, two ends of the return spring 22 are respectively connected with the valve 20 and the winding sleeve 19, and through the setting of the return spring 22, under the condition that the coil 30 is not electrified, the valve 20 can be restored to the original position.

Further, in the above scheme, an annular groove 23 is formed in one end of the control rod 21, an interlocking cavity 24 is formed in the control rod 21, the annular groove 23 is communicated with the interlocking cavity 24, the same connecting rod 25 is arranged in the annular groove 23 and the interlocking cavity 24, one end of the connecting rod 25 penetrates through the annular groove 23 and extends to the outside, a connecting disc 26 is fixedly connected to one end of the connecting rod 25, the connecting disc 26 is located in the interlocking cavity 24, and the magnetic core 27 is moved to drive the valve 20 to move through the arrangement of the connecting disc 26.

Further, in the above solution, the other end of the connecting rod 25 is fixedly connected with a magnetic core 27, one side of the winding sleeve 19 is fixedly connected with a top disc 28 and a winding disc 29, one side of the top disc 28 and the winding disc 29, which are close to each other, is provided with a multi-turn coil 30, one end of the winding sleeve 19 is fixedly sleeved with an iron core 31, one end of the iron core 31 extends out of one end of the winding sleeve 19, the other end of the iron core 31 corresponds to the magnetic core 27, and through the arrangement of the iron core 31, the magnetic field intensity generated after the coil 30 is energized is strengthened.

Further, in the above scheme, the top of the hydraulic oil tank 1 is fixedly connected with the load power supply 32, the inner wall of one side of the horizontal conduit 13 is provided with two sliding grooves 33, the horizontal conduit 13 is internally provided with the pressure plate 34, one side of the pressure plate 34 is fixedly connected with two convex blocks 35, the positions of the two convex blocks 35 correspond to the positions of the two sliding grooves 33 respectively and are matched with each other, one end of the pressure plate 34 is fixedly connected with a plurality of through holes 36 which are uniformly distributed, and the pressure in the pipeline is conveniently conducted to the pressure sensor 39 through the arrangement of the pressure plate 34.

Further, in the above solution, three connecting rods 37 are fixedly connected to an inner wall of one side of the horizontal duct 13, one end of each of the three connecting rods 37, which is close to each other, is fixedly connected to the same fixed plate 38, the position of the fixed plate 38 corresponds to the position of the pressure plate 34, one end of the fixed plate 38, which is close to the pressure plate 34, is fixedly connected to a pressure sensor 39, and one end of each of the pressure sensor 39, which is close to the pressure plate 34, is fixedly connected to the same pressing spring 40.

Further, in the above scheme, the top of the hydraulic oil tank 1 is fixedly connected with a control center 41, one end of the control center 41 is electrically connected with a pressure conducting wire 42, one end of the pressure conducting wire 42 is electrically connected with one side of the pressure sensor 39, one side of the control center 41 is electrically connected with two power control wires 43, the other ends of the two power control wires 43 are electrically connected with the load power supply 32, and the setting of the control center 41 is convenient for adjusting the working states of the electromagnetic relief valve and the motor 6 according to the pressure in the pipeline.

Further, in the above scheme, the other side of the control center 41 is electrically connected with a driving control line 44, the other end of the driving control line 44 is electrically connected with the driving annunciator 9, the horizontal overflow pipe 17 is internally and fixedly connected with a limiting disc 45, one side of the control rod 21 is attached to the inner wall of one side of the limiting disc 45, and the control rod 21 is convenient to drive the valve 20 to return to the original position through the arrangement of the limiting disc 45.

When using, through starter motor 6, make input shaft 7 with motor 6 fixed connection rotate, then make driving gear 8 rotate, thereby make the onion section gear rotation with 8 engaged with driving gears, interlock each other through driving gear 8 and driven gear, make hydraulic oil in the hydraulic tank 1 enter into to the seal chamber 4 along perpendicular pipe 3, under the effect of pressure difference, driving gear 8 and driven gear are with the hydraulic oil in the seal chamber 4 along producing oil pipe 10 propelling movement to pneumatic cylinder 12 in, thereby indirectly push hydraulic pressure dish 16 and externally do work, realize hydraulic system's hydraulic pressure function.

Through the arrangement of the pressure disc 34, when the oil pressure in the horizontal conduit 13 and the hydraulic cylinder 12 is too high, the pressure disc 34 will move to one side, and then the pressure sensor 39 is continuously pressed by the pressing spring 40, so that the pressure sensor 39 transmits pressure data to the control center 41 through the pressure transmission line 42, and the control center 41 transmits corresponding control commands to the load power supply 32 and the motor 6 through the power control line 43 and the driving control line 44.

Through the setting of power control line 43 and load power supply 32, when the pressure in the pipeline is too big, load power supply 32 starts the power under control center 41's control effect, make multiturn coil 30 circular telegram produce magnetic field then, under the reinforcing magnetic field effect of iron core 31, magnetic core 27 removes to one side, then indirectly drive valve 20 and open to one side, thereby make the hydraulic oil in the horizontal overflow pipe 17 get into to perpendicular overflow pipe 18 in, then realize reducing the pressure in the hydraulic pressure pipeline, prevent that oil pipe from taking place the emergence of dangerous condition such as bursting.

Through the arrangement of the driving annunciator 9 and the driving control line 44, when the oil pressure in the pipeline is too high, the control center 41 sends a reverse rotation or stop rotation signal to the motor 6, so as to control the motor 6 to stop rotating or reverse rotating, so that the hydraulic oil in the horizontal conduit 13 and the hydraulic cylinder 12 stops flowing or returns to the hydraulic oil tank 1 in a reverse original way, thereby effectively preventing the pipeline from being broken due to the increase of the pressure in the pipeline and improving the safety of the whole hydraulic system.

Through the setting of top plate 28 and wire reel 29, conveniently with multiturn coil 30 winding on winding cover 19, through the setting of interlock chamber 24 with connecting rod 25, make things convenient for magnetic core 27 to remove and indirectly drive valve 20 and remove to realize valve 20's control effect, through the setting of iron core 31, strengthened the magnetic field intensity that multiturn coil 30 produced, ensure the normal operating of solenoid valve body.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.