CN213541471U

CN213541471U - Electro-hydraulic power assembly of actuator

Info

Publication number: CN213541471U
Application number: CN202022236100.8U
Authority: CN
Inventors: 赵海; 邵婷婷; 周洪俊; 杨铁山
Original assignee: Kunshan Haixin Electromechanical Technology Co ltd
Current assignee: Kunshan Haixin Electromechanical Technology Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-06-25
Anticipated expiration: 2030-10-10

Abstract

The utility model discloses an executor electricity hydraulic power subassembly, include: the oil supplementing valve comprises a motor, an oil supplementing valve core, a hydraulic lock, a valve block and an oil tank, wherein the valve block is arranged between the motor and the oil tank, an oil suction hole is formed in the front face of the valve block, an oil distributing shaft is arranged in the valve block, a plurality of plunger holes are radially formed in a plunger cylinder body, plungers are respectively arranged in the plunger holes, the oil supplementing valve core is arranged in a first mounting hole, a second mounting hole corresponding to the hydraulic lock is formed in the valve block, the opening positions of the second underflow holes in the second mounting hole correspond to the positions of the two ends of a piston mandril of the hydraulic lock respectively, a first oil inlet and outlet hole and a second oil inlet and outlet hole which penetrate through the second mounting hole are formed in the side face of the valve block, and a third underflow hole which is used for communicating the oil suction hole with the first mounting hole is formed. In this way, executor electricity hydraulic power subassembly, compact, the switching-over is nimble.

Description

Electro-hydraulic power assembly of actuator

Technical Field

The utility model relates to an executor technical field especially relates to an executor electricity hydraulic power subassembly.

Background

The hydraulic actuating mechanism is an actuating mechanism driven by hydraulic power, is mainly used for controlling the valve and realizes the opening and closing of the valve.

The existing hydraulic actuator usually adopts a hydraulic cylinder to perform the action of an actuating component, and the hydraulic cylinder needs a hydraulic pump to provide power. The existing hydraulic pump has large volume, and the reciprocating action of the hydraulic cylinder is difficult to realize through the hydraulic pump, so a plurality of valves are required to be equipped for switching, the complexity and the unstable factors of the system are further increased, and the improvement is required.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides an executor electricity hydraulic power subassembly, for the reciprocating motion of pneumatic cylinder provides power, avoids increasing the valve problem that switches.

In order to solve the technical problem, the utility model discloses a technical scheme be: providing an actuator electro-hydraulic power assembly comprising: the hydraulic oil distribution valve comprises a motor, an oil compensation valve core, a hydraulic lock, a valve block and an oil tank, wherein the valve block is arranged between the motor and the oil tank, the front surface of the valve block is provided with an oil suction hole, an oil distribution shaft is arranged in the valve block, the back surface of the valve block is provided with a bearing eccentric to the oil distribution shaft, the oil distribution shaft is rotatably provided with a plunger cylinder body positioned in the bearing, two sides of the front part of the oil distribution shaft are provided with first oil inlet and outlet grooves positioned in the plunger cylinder body, two sides of the rear part of the oil distribution shaft are provided with second oil inlet and outlet grooves one-to-one corresponding to the first oil inlet and outlet grooves, a plurality of plunger holes are radially arranged in the plunger cylinder body, plungers are respectively arranged in the plunger holes, a rotating shaft of the motor is provided with a transmission sleeve for driving the plunger cylinder body to rotate, a first mounting hole corresponding to the oil compensation valve core is arranged in the valve block, the oil compensation valve core is arranged in the first mounting hole, two, the intersection point of the first underflow hole and the first mounting hole corresponds to the two end positions of the oil supplementing valve core respectively, a second mounting hole corresponding to the hydraulic lock is arranged in the valve block, the hydraulic lock is arranged in the second mounting hole, second underflow holes extending into the second mounting hole are arranged in the first underflow hole respectively, the opening positions of the second underflow holes in the second mounting hole correspond to the two end positions of a piston mandril of the hydraulic lock respectively, a first oil inlet and outlet hole and a second oil inlet and outlet hole penetrating through the second mounting hole are arranged on the side face of the valve block, the intersection points of the first oil inlet and outlet hole and the second mounting hole correspond to the two valve seat positions of the hydraulic lock respectively, and a third underflow hole communicating the oil suction hole with the first mounting hole is arranged in the valve block.

In a preferred embodiment of the present invention, the oil suction hole is provided with an oil suction pipe extending into the oil tank.

In a preferred embodiment of the present invention, the end of the oil suction pipe is provided with a gravity oil suction ball, and the oil suction pipe is sleeved with a support spring located between the gravity oil suction ball and the valve block.

In a preferred embodiment of the present invention, a fourth underflow hole is provided in the oil distribution shaft to communicate the corresponding first oil inlet/outlet groove and the second oil inlet/outlet groove.

In a preferred embodiment of the present invention, the annular array is provided with a plurality of blind holes on the transmission sleeve, the plunger cylinder body is provided with a transmission post extending into at least one of the blind holes on the front side, and the transmission post is provided with a limit spring extending to the bottom end of the blind hole.

In a preferred embodiment of the present invention, two pressure sensors are disposed on the side of the valve block and respectively communicate with the first oil inlet/outlet hole and the second oil inlet/outlet hole.

In a preferred embodiment of the present invention, the first mounting hole includes a guiding hole and a blocking hole, the blocking hole is disposed at both ends of the guiding hole, and the diameter of the blocking hole is larger than the diameter of the guiding hole to form a stepped hole, and the third underflow hole is communicated with the guiding hole.

In a preferred embodiment of the present invention, the oil compensating valve core includes a first valve core head and a second valve core head, the first valve core head and the second valve core head are respectively disposed in the corresponding plugging holes, and the first valve core head is provided with a valve core rod in threaded connection with the second valve core head.

In a preferred embodiment of the present invention, a tension spring is disposed on the valve core rod, the valve core rod and the tension spring are located in the guide hole, and the diameter of the first valve core head and the diameter of the second valve core head are greater than the diameter of the guide hole.

The utility model discloses a preferred embodiment, the valve block side is provided with two overflow valve mounting holes that communicate with the first undercurrent hole that corresponds respectively, be provided with the overflow valve in the overflow valve mounting hole, be provided with the oil gallery that communicates with the oil tank in the overflow valve mounting hole.

The utility model has the advantages that: the utility model discloses a pair of executor electricity hydraulic power subassembly utilizes the positive and negative commentaries on classics of motor, can realize the business turn over and the switching of hydraulic oil, need not to increase the valve that switches, and the compactness of the volume of guaranteeing has promoted the stability of work.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic structural diagram of a preferred embodiment of an electro-hydraulic power assembly of an actuator according to the present invention;

FIG. 2 is a perspective view of FIG. 1;

FIG. 3 is a schematic structural view of the valve block of FIG. 1;

FIG. 4 is a bottom view of FIG. 3;

FIG. 5 is a sectional view taken along line A-A of FIG. 4;

FIG. 6 is a sectional view taken along line B-B of FIG. 4;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 3;

FIG. 8 is a cross-sectional view taken along line D-D of FIG. 4;

FIG. 9 is a schematic structural view of the oil distributing shaft of FIG. 8;

fig. 10 is a schematic structural view of the oil replenishment valve cartridge in fig. 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 10, an embodiment of the present invention includes:

the electro-hydraulic power assembly of the actuator shown in figures 1-2 comprises: motor 12, mend oil valve core 116, hydraulic pressure lock 115, valve block 11 and oil tank 15, valve block 11 sets up between motor 12 and oil tank 15, can connect fixedly through the screw, and it is convenient to dismantle.

As shown in fig. 3 to 8, an oil suction hole 119 is formed in the front surface of the valve block 11, an oil suction pipe 14 extending into the oil tank 15 is disposed on the oil suction hole 119, a gravity oil suction ball 16 is disposed at the end of the oil suction pipe 14, and the gravity oil suction ball 16 enables the oil suction pipe 14 to suck hydraulic oil at the bottom of the oil tank 15 after being bent, in this embodiment, a support spring 17 located between the gravity oil suction ball 16 and the valve block 11 is sleeved on the oil suction pipe 14, so as to ensure the curvature of the oil suction pipe 14 when being bent, and avoid the problem of blockage due to excessive bending.

An oil distribution shaft 111 is arranged in the valve block 11, and in the embodiment, the oil distribution shaft 111 extends from the front surface of the valve block 11 to the back surface of the valve block 11 and is limited by a clamp spring, so that the valve block is convenient to assemble and disassemble. As shown in fig. 5, a bearing 1132 eccentric to the oil distribution shaft 111 is disposed on the back of the valve block 11, a plunger cylinder 113 disposed in the bearing 1132 is rotatably disposed on the oil distribution shaft 111, 5 to 6 plunger holes are radially disposed in the plunger cylinder 113, plungers 1131 are disposed in the plunger holes, respectively, the plungers 1131 reciprocate by rotation of the plunger cylinder 113, and pump oil by cooperating with the bearing 1132 eccentric to the plunger cylinder 113.

As shown in fig. 9, first oil inlet and outlet grooves 1113 located in the plunger cylinder 113 are arranged on two sides of the front part of the oil distribution shaft 111, second oil inlet and outlet grooves corresponding to the first oil inlet and outlet grooves 1113 one by one are arranged on two sides of the rear part of the oil distribution shaft 111, and fourth submerged holes 1112 communicating the corresponding first oil inlet and outlet grooves 1113 and the corresponding second oil inlet and outlet grooves 1111 are arranged in the oil distribution shaft 111 to form a bidirectional oil path.

In this embodiment, a rotating shaft of the motor 12 is provided with a transmission sleeve 112 for driving the plunger cylinder 113 to rotate, as shown in fig. 8, a plurality of blind holes 1121 are formed in the transmission sleeve 112 in an annular array for weight reduction and dynamic balance, a transmission column 1123 extending into at least one of the blind holes 1121 is arranged on the front surface of the plunger cylinder 113 for transmission, and a limit spring 1122 extending to the bottom end of the blind hole 1121 is arranged on the transmission column 1123 for ensuring the axial stability of the plunger cylinder 113 and the transmission sleeve 112.

In this embodiment, a first mounting hole 1191 corresponding to the oil compensation valve core 116 is disposed in the valve block 11, the oil compensation valve core 116 is disposed in the first mounting hole 1191, two first undercurrent holes 1193 respectively communicating the second oil inlet/outlet tank 1111 and the first mounting hole 1191 are disposed in the valve block 11, and the junction points of the first undercurrent holes 1193 and the first mounting hole 1191 respectively correspond to the positions of the two ends of the oil compensation valve core 116, so as to facilitate the movement of the oil compensation valve core 116.

The valve block 11 is provided with a third down-the-flow hole 1191 for communicating the oil suction hole 119 with the first mounting hole 1191, in this embodiment, the first mounting hole 1191 includes a guiding hole and blocking holes, the blocking holes are disposed at two ends of the guiding hole, and the diameter of the blocking holes are respectively larger than that of the guiding hole to form a stepped hole, and the third down-the-flow hole 1191 is communicated with the guiding hole to supply oil to the guiding hole.

As shown in fig. 10, the oil compensating valve core 116 includes a first valve core head 1161 and a second valve core head 1162, the first valve core head 1161 and the second valve core head 1162 are respectively disposed in the corresponding blocking holes, a valve core rod 1163 threadedly connected to the second valve core head 1162 is disposed on the first valve core head 1161, and in this embodiment, a tension spring 1164 is disposed on the valve core rod 1163 to prevent the second valve core head 1162 from being loosened. The valve core rod 1163 and the tensioning spring 1164 are located in the guide hole, and installation is convenient.

The diameter sizes of the first valve core head 1161 and the second valve core head 1162 are larger than that of the guide hole, and one end of the guide hole is closed and the other end of the guide hole is opened through the matching of the first valve core head 1161 and the second valve core head 1162 with the guide hole. For example, when the plunger cylinder 113 moves, a suction force is generated, so that the oil compensating valve core 116 moves forward toward the first underflow hole on one side, and a passage between the guide hole and the first underflow hole is opened, oil in the guide hole is guided into the plunger cylinder 113, and then flows out through the first underflow hole on the other side, so as to form a loop, when the plunger cylinder 113 runs in a reverse direction, oil paths in the first underflow holes on both sides are also reversed, that is, by controlling the rotation direction of the motor, the oil paths can be reversed, and the flexibility is good.

In this embodiment, a second mounting hole corresponding to the hydraulic lock 115 is formed in the valve block 11, the hydraulic lock 115 is disposed in the second mounting hole, second down-the-flow holes 1192 extending into the second mounting hole are respectively formed in the first down-the-flow holes 1193, and the opening positions of the second down-the-flow holes 1192 in the second mounting hole respectively correspond to the two ends of the piston rod of the hydraulic lock 115, so that oil can be conveniently supplied through the second down-the-flow holes 1192 to open the hydraulic lock 115.

As shown in fig. 5, a first oil inlet and outlet hole 117 and a second oil inlet and outlet hole 118 penetrating through the second mounting hole are formed in the side surface of the valve block 11, the intersection points of the first oil inlet and outlet hole 117 and the second oil inlet and outlet hole 118 and the second mounting hole respectively correspond to the positions of two hydraulic lock valve seats of the hydraulic lock 115, and the first oil inlet and outlet hole 117 and the second oil inlet and outlet hole 118 can be opened after the hydraulic lock 115 is opened, so that the self-locking effect is good. In this embodiment, two pressure sensors 13 are disposed on the side of the valve block 11 and communicate with the first oil inlet/outlet hole 117 and the second oil inlet/outlet hole 118, respectively, to detect the oil passage pressure.

Two overflow valve mounting holes respectively communicated with the corresponding first down-the-hole 1193 are formed in the side face of the valve block 11, as shown in fig. 6, an overflow valve 114 is arranged in each overflow valve mounting hole, an oil return hole communicated with an oil tank is formed in each overflow valve mounting hole, oil return is performed, and stability of oil supply pressure is controlled.

To sum up, the utility model discloses an executor electricity hydraulic power subassembly, through the rotation of motor, carry out switching on of oil circuit to adjust through the positive and negative rotation of motor, change the direction of oil circuit, switch in a flexible way, compact, structural stability is high.

The above is only the embodiment of the present invention, not limiting the scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the present invention, or directly or indirectly applied to other related technical fields, and all included in the same way in the protection scope of the present invention.

Claims

1. An actuator electro-hydraulic power assembly, comprising: the hydraulic oil distribution valve comprises a motor, an oil compensation valve core, a hydraulic lock, a valve block and an oil tank, wherein the valve block is arranged between the motor and the oil tank, the front surface of the valve block is provided with an oil suction hole, an oil distribution shaft is arranged in the valve block, the back surface of the valve block is provided with a bearing eccentric to the oil distribution shaft, the oil distribution shaft is rotatably provided with a plunger cylinder body positioned in the bearing, two sides of the front part of the oil distribution shaft are provided with first oil inlet and outlet grooves positioned in the plunger cylinder body, two sides of the rear part of the oil distribution shaft are provided with second oil inlet and outlet grooves one-to-one corresponding to the first oil inlet and outlet grooves, a plurality of plunger holes are radially arranged in the plunger cylinder body, plungers are respectively arranged in the plunger holes, a rotating shaft of the motor is provided with a transmission sleeve for driving the plunger cylinder body to rotate, a first mounting hole corresponding to the oil compensation valve core is arranged in the valve block, the oil compensation valve core is arranged in the first mounting hole, two, the intersection point of the first underflow hole and the first mounting hole corresponds to the two end positions of the oil supplementing valve core respectively, a second mounting hole corresponding to the hydraulic lock is arranged in the valve block, the hydraulic lock is arranged in the second mounting hole, second underflow holes extending into the second mounting hole are arranged in the first underflow hole respectively, the opening positions of the second underflow holes in the second mounting hole correspond to the two end positions of a piston mandril of the hydraulic lock respectively, a first oil inlet and outlet hole and a second oil inlet and outlet hole penetrating through the second mounting hole are arranged on the side face of the valve block, the intersection points of the first oil inlet and outlet hole and the second mounting hole correspond to the two valve seat positions of the hydraulic lock respectively, and a third underflow hole communicating the oil suction hole with the first mounting hole is arranged in the valve block.

2. The actuator electro-hydraulic power assembly of claim 1, wherein the oil suction opening is provided with an oil suction pipe extending into an oil tank.

3. The electro-hydraulic power assembly of the actuator according to claim 2, wherein a gravity oil suction ball is arranged at the tail end of the oil suction pipe, and a support spring located between the gravity oil suction ball and the valve block is sleeved on the oil suction pipe.

4. The actuator electro-hydraulic power assembly of claim 1, wherein a fourth underflow hole is provided in the oil distribution shaft to communicate the corresponding first and second oil inlet and outlet grooves.

5. The actuator electrohydraulic power assembly of claim 1, wherein a plurality of blind holes are formed in the transmission sleeve in an annular array, a transmission column extending into at least one of the blind holes is arranged on the front face of the plunger cylinder body, and a limit spring extending to the bottom end of the blind hole is arranged on the transmission column.

6. The actuator electro-hydraulic power assembly of claim 1, wherein the valve block is laterally provided with two pressure sensors respectively communicating with the first oil inlet and outlet hole and the second oil inlet and outlet hole.

7. The actuator electro-hydraulic power assembly of claim 1, wherein the first mounting hole comprises a guide hole and blocking holes, the blocking holes are arranged at two ends of the guide hole, the diameter size of each blocking hole is larger than that of the guide hole to form a stepped hole, and the third submerged hole is communicated with the guide hole.

8. The actuator electrohydraulic power assembly of claim 7, wherein the oil compensating valve core comprises a first valve core head and a second valve core head, the first valve core head and the second valve core head are respectively arranged in the corresponding blocking holes, and a valve core rod in threaded connection with the second valve core head is arranged on the first valve core head.

9. The actuator electro-hydraulic power assembly of claim 8, wherein the spool rod is provided with a tension spring thereon, the spool rod and the tension spring are located in the guide hole, and the first and second spool heads have a diameter dimension greater than a diameter dimension of the guide hole.

10. The actuator electrohydraulic power assembly of claim 1, wherein two overflow valve mounting holes are formed in the side face of the valve block and are respectively communicated with the corresponding first down-the-hole, an overflow valve is arranged in each overflow valve mounting hole, and an oil return hole communicated with an oil tank is arranged in each overflow valve mounting hole.