Miniature integrated actuator

Abstract

The present invention belongs to the field of gearbox control, and specifically relates to a micro-integrated actuator, including a housing, a control element and a built-in actuator. The housing is an integrally formed "convex" type mounting body, including a control body and an actuator. The control element is mounted on the control body of the housing, and the built-in actuator is mounted on the actuator of the housing. The actuator has a cavity, and a forward and backward telescopic action rod is arranged in the cavity. The control element is connected with the built-in actuator and controls its action. The control element includes a throttle valve, a pressure reducing valve and an electromagnetic reversing valve. The control body has oil ports P and T. A throttle valve and a pressure reducing valve are arranged between the oil port P and the built-in actuator, and the throttle valve and the pressure reducing valve are installed on the top of the housing. This micro-integrated actuator uses a precise housing to integrate two electromagnetic valves and two built-in actuators. The internal oil channel is reasonably designed, and has the characteristics of compact appearance, fast response speed, automatic reset when oil and power are cut off, low oil circuit pressure loss, reduced resistance, etc.

Description

Technical Field

[0001] The invention belongs to the field of gearbox control, and in particular relates to a miniature integrated actuator. Background Art

[0002] Traditional gearbox shifting mechanisms mostly use mechanical, cable-type or wire-controlled control. These control methods have many shortcomings in terms of shifting response speed, accuracy and stability, especially under high speed, high load or complex working conditions. These problems are particularly prominent.

[0003] In recent years, micro-integrated actuator technology has been widely used in many fields due to its high precision, high reliability, and fast response. Micro-integrated actuators can achieve precise control of tiny displacements or forces. Applying micro-integrated actuators to gearbox shift valves is expected to solve the problems of traditional shift mechanisms and improve the gearbox shift performance.

[0004] Transmissions using hydraulic control usually use control valves to control the output of hydraulic cylinders to complete gear shifting. Currently, the gearbox shift control valves on the market mainly use traditional large-flow slide valve structures to control the actuator to control the gearbox shifting. The disadvantages are slow action, large leakage, slow response speed, large loss, large size, complex system, and large space occupation. Summary of the invention

[0005] In order to solve the technical problems existing in the prior art and achieve the above-mentioned purpose, the present invention provides a miniature integrated actuator.

[0006] The present invention adopts the following technical scheme: a micro-integrated actuator, including a shell, a control element and a built-in actuator, the shell includes an integrally formed "convex" type mounting body, the shell includes a control body and an actuator, the control element is installed on the control body of the shell, the built-in actuator is installed on the actuator of the shell, the actuator has a cavity, a forward and backward telescopic action rod is arranged in the cavity, the control element is connected with the built-in actuator and controls its action, the control element includes a throttle valve, a pressure reducing valve and an electromagnetic reversing valve, the control body has an oil port P and an oil port T, a throttle valve and a pressure reducing valve are arranged between the oil port P and the built-in actuator, the throttle valve and the pressure reducing valve are installed on the top of the shell, the built-in actuator includes an action rod, a guide sleeve, a piston, an actuator spring, a T-type connector, a baffle, a front cover, and a rear cover, and the cavity is a stepped structure. The through hole of the structure includes a first step hole, a second step hole, and a third step hole. The front end cover and the rear end cover are respectively installed on the front and rear end surfaces of the cavity. The diameter of the second step hole is smaller than the diameters of the first step hole and the third step hole. The guide sleeve is arranged in the first step hole. The action rod passes through the front end cover and the guide sleeve and is connected with the piston arranged in the second step hole. The piston divides the second step hole into a rod cavity and a rodless cavity. Baffles are arranged on both sides of the actuator spring and are penetrated on the T-type connecting piece. The T-type connecting piece is connected to the other end of the piston. The actuator spring is close to the piston. The side of the actuator spring is against the step end surface of the third step hole through the baffle, and the other side of the actuator spring is against the T-type connecting piece through the baffle. An actuator spring cavity is formed between the baffles, and an opening connecting the rodless cavity and the actuator spring cavity is opened around the baffle.

[0007] The built-in actuator includes a first built-in actuator and a second built-in actuator which are arranged in parallel.

[0008] The shell is provided with a main oil pipeline, and a throttle valve socket for installing a throttle valve and a pressure reducing valve socket for installing a pressure reducing valve are provided on the upper end surface of the control body. Two cavities for accommodating a first built-in actuator and a second built-in actuator are horizontally provided on the actuator. The control body is provided with two independent core cavities, and valve cores are provided in the two independent core cavities. Electromagnets are provided at both ends of one of the core cavities to form a first electromagnetic reversing valve with the valve core in the core cavity, and an electromagnet is provided at one end of the other core cavity and a plug is provided at the other end to form a second electromagnetic reversing valve with the valve core in the core cavity. The oil port P is connected to the throttle valve socket, the pressure reducing valve socket and the main oil pipeline in sequence. The main oil pipeline is connected to the first electromagnetic reversing valve and the second electromagnetic reversing valve respectively. The first electromagnetic reversing valve cooperates with the first built-in actuator to conduct and control its action, and the second electromagnetic reversing valve cooperates with the second built-in actuator to conduct and control its action.

[0009] The rear end cover is provided with a first receiving groove and a second receiving groove, the T-shaped connecting piece of the first built-in actuator is located in the first receiving groove, the T-shaped connecting piece of the first built-in actuator moves relatively forward and backward in the first receiving groove, and the bottom of the T-shaped connecting piece of the second built-in actuator is against the bottom of the second receiving groove.

[0010] The first solenoid reversing valve is a three-position four-way valve, the middle position of which is a Y function, and the second solenoid reversing valve is a two-position four-way valve.

[0011] The first solenoid reversing valve and the second solenoid reversing valve are both provided with a left T chamber, an A chamber, a pressure chamber, a B chamber, and a right T chamber; each end surface of the shell is provided with process holes: upper process hole 1, upper process hole 2, front process hole 1, front process hole 2, front process hole 3, left process hole 1, left process hole 2, left process hole 3, right process hole 1, right process hole 2, right process hole 3, rear process hole 1, rear process hole 2, rear process hole 3, lower process hole 1, lower process hole 2, lower process hole 3, and lower process hole 4, wherein a main oil inlet hole is provided at the oil port P of the shell, and the main oil inlet hole is connected in sequence to the throttle valve socket, the right process hole 1, the pressure reducing valve socket, the left process hole 3, and the main oil pipeline, and the pressure reducing valve socket is also connected to the main oil outlet hole, and the main oil pipeline is connected to the pressure chambers of the first solenoid reversing valve and the second solenoid reversing valve through the first middle flow channel and the second middle flow channel respectively;

[0012] The A chamber of the first electromagnetic reversing valve is connected in sequence to the left first flow channel, the right process hole three, the rear process hole three, the lower process hole three, and the actuator spring chamber of the first built-in actuator; the B chamber of the first electromagnetic reversing valve is connected in sequence to the right first flow channel, the right process hole two, the lower process hole four, and the rod chamber of the first built-in actuator; the left T chamber and the right T chamber of the first electromagnetic reversing valve are connected to the upper process hole one and the main oil outlet hole through the front process hole one, the front process hole two, and the first connecting hole;

[0013] The A chamber of the second solenoid reversing valve is connected to the left second flow channel, the left process hole 1, the lower process hole 1, and the actuator spring chamber of the second built-in actuator in sequence; the B chamber of the second solenoid reversing valve is connected to the right second flow channel, the left process hole 2, the front process hole 3, the lower process hole 2, and the rod chamber of the second built-in actuator in sequence; the left T chamber and the right T chamber of the second solenoid reversing valve are connected to the upper process hole 2 and the main oil outlet hole through the rear process hole 2, the rear process hole 1, and the second connecting hole.

[0014] The ports on both sides of the main oil pipeline are respectively connected with pressure gauges and accumulators.

[0015] The present invention has the following characteristics and beneficial effects: this miniature integrated actuator adopts a precise shell to integrate two solenoid valves and two built-in actuators. The internal oil channel is reasonably designed, with a compact appearance and fast response speed. The mechanism of the built-in actuator enables the actuator to return to the middle position when the oil or power is cut off, thereby achieving automatic reset. It has the characteristics of low oil circuit pressure loss and reduced resistance. The solenoid suction force of the reversing valve part and the spring force of the sliding valve actuator are large, and the spring reset force of the cylinder part actuator is large, so it is resistant to dirt, stable and reliable in operation, and reduces the vibration of the gearbox due to sudden power impact.

[0016] The application of micro-integrated actuators in the gearbox shift valve can achieve fast and precise control of the shift valve. By accurately controlling the output force or displacement of the actuator, the internal oil circuit of the shift valve can be accurately controlled, and then the gear position of the gearbox can be accurately switched. This control method not only has a fast response speed, but also has high precision. It can achieve stable and reliable shifting operations under various working conditions, replacing mechanical or cable-type manual gearshift control.

[0017] In addition, the micro-integrated actuator is highly integrated, and multiple functional components can be integrated into a small package, which greatly reduces the complexity and space occupied by the system. This feature makes the micro-integrated actuator have unique advantages in space-constrained occasions such as gearboxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a right side view of the present invention;

[0020] Figure 3 for Figure 2 Schematic diagram of the cross section at AA;

[0021] Figure 4 for Figure 2 Schematic diagram of the cross section at BB;

[0022] Figure 5 for Figure 2 Schematic diagram of the cross section at CC;

[0023] Figure 6 for Figure 2 Schematic diagram of the cross section at DD;

[0024] Figure 7 It is a rear view of the present invention;

[0025] Figure 8 for Figure 7 Schematic diagram of the cross section at EE;

[0026] Fig. 9 for Figure 7 Schematic diagram of the cross section at FF;

[0027] Fig.10 The three-dimensional structure of the housing of the present invention is shown in FIG. Figure 1 ;

[0028] Fig.11 The three-dimensional structure of the housing of the present invention is shown in FIG. Figure 2 ;

[0029] Fig.12It is a left side view of the housing of the present invention;

[0030] Fig.13 for Fig.12 Schematic diagram of the cross section at GG in the middle;

[0031] Fig.14 It is the hydraulic principle diagram of the present invention.

[0032] In the figure: 1-housing; 2-first electromagnetic reversing valve; 3-second electromagnetic reversing valve; 4-first built-in actuator; 5-second built-in actuator; 6-throttle valve; 7-pressure reducing valve; 8-pressure gauge; 9-accumulator; 10-check valve; 11-front end cover; 12-rear end cover; 121-first accommodating groove; 122-second accommodating groove; 13-actuating rod; 14-guide sleeve; 15-piston; 16-actuator spring spring; 17-T-type connector; 18-blocking piece; 19-rod chamber; 20-rodless chamber; 21-actuator spring chamber; 22-first step hole; 23-second step hole; 24-third step hole; 101-main oil inlet hole; 102-main oil outlet hole; 103-main oil pipeline; 106-first connecting hole; 107-second connecting hole; 108-upper process hole 1; 109-upper process hole 2; 1010-front Process hole 1; 1011-front process hole 2; 1012-front process hole 3; 1013-left process hole 1; 1014-left process hole 2; 1015-left process hole 3; 1016-right process hole 1; 1017-right process hole 2; 1018-right process hole 3; 1019-throttle valve plug hole; 1020-pressure reducing valve plug hole; 1021-rear process hole 1; 1022-rear process hole 2; 102 3-rear process hole three; 1024-lower process hole one; 1025-lower process hole two; 1026-lower process hole three; 1027-lower process hole four; 1028-left first flow channel; 1029-middle first flow channel; 1030-right first flow channel; 1031-left second flow channel; 1032-middle second flow channel; 1033-right second flow channel; 1034-end cover mounting hole; 1035-pressure gauge mounting port. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] like Figure 1 , 10As shown in , 11, the miniature integrated actuator includes a housing 1, a control element and a built-in actuator, the housing 1 is an integrally formed "convex" type mounting body, the housing 1 includes a control body and an actuator, the built-in actuator includes a first built-in actuator 4 and a second built-in actuator 5 arranged in parallel, and the built-in actuator is installed on the actuator of the housing 1; the control element includes a throttle valve 6, a pressure reducing valve 7, a first electromagnetic reversing valve 2 and a second electromagnetic reversing valve 3, and the control element is installed on the control body of the housing 1.

[0035] like Figure 2 , 3 As shown in Figures 4, 5, 7, 8 and 9, the control body on the upper part of the shell 1 is provided with two independent core cavities, and valve cores are arranged in the two independent core cavities. Valve core springs are installed at both ends of the valve core. Electromagnets are arranged at both ends of one of the core cavities, and they form a first electromagnetic reversing valve 2 with the valve core in the core cavity. The first electromagnetic reversing valve 2 is a three-position four-way valve, and the middle position is a Y function; an electromagnet is arranged at one end of the other core cavity, and a plug is arranged at the other end, and they form a second electromagnetic reversing valve 3 with the valve core in the core cavity, and a valve core spring is installed on the side of the valve core close to the electromagnet. The second electromagnetic reversing valve 3 is a two-position four-way valve.

[0036] like Figure 1 , 2, 6, 7, 8, and 9, the actuator at the lower part of the housing 1 is horizontally provided with two cavities for accommodating the first built-in actuator 4 and the second built-in actuator 5. The two built-in actuators are composed of an actuating rod 13, a guide sleeve 14, a piston 15, an actuator spring 16, a T-shaped connector 17, and a baffle 18. The front end cover 11 and the rear end cover 12 are respectively installed on the front and rear end surfaces of the cavity. The cavity is a through hole with a stepped structure. The cavity includes a first stepped hole 22, a second stepped hole 23, and a third stepped hole 24. The diameter of the second stepped hole 23 is smaller than that of the first stepped hole 22 and the third stepped hole 24. The guide sleeve 14 is arranged in the first stepped hole 22, and the actuating rod 13 is arranged in the first stepped hole 22. It passes through the front end cover 11 and the guide sleeve 14 and is connected to the piston 15 placed in the second stepped hole 23. The piston 15 divides the second stepped hole 23 into a rod chamber 19 and a rodless chamber 20. Baffles 18 are arranged on both sides of the actuator spring 16 and are passed through the T-type connector 17. The T-type connector 17 is connected to the other end of the piston 15. The side of the actuator spring 16 close to the piston 15 is abutted on the step end face of the third stepped hole 24 through the baffle 18. The other side of the actuator spring 16 is abutted on the T-type connector 17 through the baffle 18. An actuator spring chamber 21 is formed between the baffles 18, and an opening connecting the rodless chamber 20 and the actuator spring chamber 21 is opened around the baffle 18. The rear end cover 12 is provided with a first receiving groove 121 and a second receiving groove 122. The T-shaped connecting piece 17 of the first built-in actuator 4 is located in the first receiving groove 121. The T-shaped connecting piece 17 of the first built-in actuator 4 moves relatively forward and backward in the first receiving groove 121. The piston is kept in the middle position by the actuator spring 16. At the same time, the first receiving groove 121 reserves space for reciprocating motion and has a buffering function. The bottom of the T-shaped connecting piece 17 of the second built-in actuator 5 is against the bottom of the second receiving groove 122. When there is no pressure in the rod chamber 19 and the rodless chamber 20 of the two built-in actuators, the piston and the action rod 13 in the first built-in actuator 4 are maintained in the middle position under the action of the actuator spring 16 and the baffles 18 on both sides, and the piston and the action rod 13 in the second built-in actuator 5 are retracted into place under the action of the actuator spring 16 and the baffles 18 on both sides. This design ensures the stability and safety of the actuator in the absence of external force. The front end cover 11 and the rear end cover 12 are respectively sealed in the end cover mounting holes 1034 installed on the actuator. The design of the front end cover 11 and the rear end cover 12 has the beneficial effects of reliable sealing and convenient maintenance.

[0037] like Figure 10-13As shown, the control body is provided with an oil port P and an oil port T, the upper end surface of the control body is provided with a throttle valve socket 1019 for installing a throttle valve 6 and a pressure reducing valve socket 1020 for installing a pressure reducing valve 7, the housing 1 is provided with a main oil pipeline 103, the oil port P is connected to the throttle valve socket 1019, the pressure reducing valve socket 1020, and the main oil pipeline 103 in sequence, the main oil pipeline 103 is connected to the first solenoid reversing valve 2 and the second solenoid reversing valve 3 respectively, the first solenoid reversing valve 2 cooperates with the first built-in actuator 4 to conduct and control its action, and the second solenoid reversing valve 3 cooperates with the second built-in actuator 5 to conduct and control its action.

[0038] like Figure 1-14 As shown, the first solenoid reversing valve 2 and the second solenoid reversing valve 3 are both provided with a left T chamber, an A chamber, a pressure chamber, a B chamber, and a right T chamber; each end surface of the housing 1 is provided with process holes: an upper process hole 108, an upper process hole 2 109, a front process hole 1 1010, a front process hole 2 1011, a front process hole 3 1012, a left process hole 1 1013, a left process hole 2 1014, a left process hole 3 1015, a right process hole 1 1016, a right process hole 2 1017, a right process hole 3 1018, a rear process hole 1 1021, a rear process hole 2 1022, a rear process hole 3 1023, a lower process hole 1 Process hole one 1024, lower process hole two 1025, lower process hole three 1026, lower process hole four 1027, wherein a main oil inlet hole 101 is provided at the oil port P of the housing 1, the main oil inlet hole 101 is sequentially connected to the throttle valve socket 1019, the right process hole one 1016, the pressure reducing valve socket 1020, the left process hole three 1015, and the main oil pipeline 103, the pressure reducing valve socket 1020 is also connected to the main oil outlet hole 102, and the main oil pipeline 103 is respectively connected to the pressure chambers of the first electromagnetic reversing valve 2 and the second electromagnetic reversing valve 3 through the first middle flow channel 1029 and the second middle flow channel 1032;

[0039] The A chamber of the first electromagnetic reversing valve 2 is connected in sequence to the left first flow channel 1028, the right process hole 3 1018, the rear process hole 3 1023, the lower process hole 3 1026, and the actuator spring chamber 21 of the first built-in actuator 4; the B chamber of the first electromagnetic reversing valve 2 is connected in sequence to the right first flow channel 1030, the right process hole 2 1017, the lower process hole 4 1027, and the rod chamber 19 of the first built-in actuator 4; the left T chamber and the right T chamber of the first electromagnetic reversing valve 2 are connected to the upper process hole 1 108 and the main oil outlet hole 102 through the front process hole 1 1010, the front process hole 2 1011, and the first connecting hole 106;

[0040] The A chamber of the second solenoid reversing valve 3 is connected to the left second flow channel 1031, the left process hole 1 1013, the lower process hole 1 1024, and the actuator spring chamber 21 of the second built-in actuator 5 in sequence; the B chamber of the second solenoid reversing valve 3 is connected to the right second flow channel 1033, the left process hole 2 1014, the front process hole 3 1012, the lower process hole 2 1025, and the rod chamber 19 of the second built-in actuator 5 in sequence; the left T chamber and the right T chamber of the second solenoid reversing valve 3 are connected to the upper process hole 2 109 and the main oil outlet hole 102 through the rear process hole 2 1022, the rear process hole 1 1021, and the second connecting hole 107.

[0041] like Figure 8 , 9 As shown in Figures 11 and 14, the ports on both sides of the main oil pipeline 103 are used for externally installing a pressure gauge 8 and an accumulator 9, respectively. The pressure gauge 8 is installed at the pressure gauge installation port 1035, and a one-way valve 10 can also be connected to the oil port P. The pressure oil is supplied from the oil port P through the one-way valve 10, and the oil control oil at the oil port P enters the main oil inlet hole 101, the throttle valve 6, the right process hole 1016, the pressure reducing valve 7, the left process hole 3 1015, and the main oil pipeline 103 in sequence, and then enters the first solenoid reversing valve 2 and the second solenoid reversing valve 3 from the main oil pipeline 103 through the first middle flow channel 1029 and the second middle flow channel 1032, respectively. When the left-position electromagnet of the first solenoid reversing valve 2 is energized, the P1 port is connected to the A1 port, the T1 port is connected to the B1 port, and the first middle flow channel 1029 is connected to the pressure chamber of the first solenoid reversing valve 2 corresponding to Fig.14 The left first flow channel 1028 is connected to the A cavity of the first electromagnetic reversing valve 2 corresponding to the P1 port Fig.14 The right first flow channel 1030 is connected to the B cavity of the first electromagnetic reversing valve 2 corresponding to the A1 port in the Fig.14 The B1 port in the middle corresponds to the connection between the upper process hole 108 and the main oil outlet hole 102 Fig.14The pressure oil enters the pressure chamber, A chamber, left first flow channel 1028, right process hole three 1018, rear process hole three 1023, lower process hole three 1026, and actuator spring chamber 21 of the first built-in actuator 4 from the P1 port in sequence, and the pressure oil then enters the rodless chamber 20 through the opening on the baffle plate close to the side of the piston 15, pushing the piston 15 forward. The return oil of the rod chamber 19 of the first built-in actuator 4 passes through the lower process hole four 1027, the right process hole two 1017, the right first flow channel 1030, and the B chamber of the first solenoid reversing valve 2 in sequence. The B chamber of the first solenoid reversing valve 2 is connected with the right T chamber. The left T chamber and the right T chamber on both sides of the first solenoid reversing valve 2 are connected together through the front process hole one 1010, the front process hole two 1011, and the first connecting hole 106. The return oil then returns to the oil tank through the upper process hole one 108, the main oil outlet hole 102, and the oil port T. When the right electromagnet of the first electromagnetic reversing valve 2 is energized, the P1 port is connected to the B1 port, and the T1 port is connected to the A1 port. The pressure oil enters the pressure chamber, B chamber, right first flow channel 1030, right process hole two 1017, lower process hole four 1027, and rod chamber 19 of the first built-in actuator 4 of the first electromagnetic reversing valve 2 from the P1 port in turn, pushing the piston 15 to move backward. The return oil in the rodless chamber 20 of the first built-in actuator 4 and the actuator spring chamber 21 passes through the lower process hole three 1026, rear process hole three 1023, right process hole three 1018, left first flow channel 1028, and A chamber of the first electromagnetic reversing valve 2 in turn. The A chamber of the first electromagnetic reversing valve 2 is connected with the left T chamber, and the right T chamber of the first electromagnetic reversing valve 2 is connected with the left T chamber. The return oil then returns to the oil tank through the upper process hole one 108, the main oil outlet hole 102, and the oil port T. When both electromagnets are not energized, ports A1 and B1 are connected through the left T chamber and the right T chamber respectively, and the pressure chamber is in a closed state, thereby connecting with the oil tank through the upper process hole 108, the main oil outlet hole 102, and the oil outlet T, and the piston 15 of the first built-in actuator 4 is kept in the middle position under the action of the actuator spring 16.

[0042] The left side of the second electromagnetic reversing valve 3 is an electromagnet, and the right side is a plug. When the electromagnet of the second electromagnetic reversing valve 3 is not energized, the P2 port is connected to the A2 port, the T2 port is connected to the B2 port, and the second flow channel 1032 is connected to the pressure chamber of the second electromagnetic reversing valve 3 corresponding to Fig.14 The left second flow channel 1031 is connected to the A cavity of the second electromagnetic reversing valve 3 corresponding to the P2 port in the Fig.14 The right second flow channel 1033 is connected to the B cavity of the second electromagnetic reversing valve 3 corresponding to the A2 port in the Fig.14 The B2 port in the middle corresponds to the connection between the upper process hole 108 and the main oil outlet hole 102 Fig.14The pressure oil enters the pressure chamber of the second electromagnetic reversing valve 3, the A chamber, the left second flow channel 1031, the left process hole 1013, the lower process hole 1024, and the actuator spring chamber 21 of the second built-in actuator 5 from the P2 port in sequence. The pressure oil then enters the rodless chamber 20 through the opening on the baffle plate close to the side of the piston 15, pushing the piston 15 forward. The return oil of the rod chamber 19 of the second built-in actuator 5 passes through the lower process hole 2 1025, the front process hole 3 1012, The left process hole 2 1014, the right second flow channel 1033, and the B chamber of the second solenoid reversing valve 3, the B chamber of the second solenoid reversing valve 3 is connected with the right T chamber, and the left T chamber and the right T chamber on both sides of the second solenoid reversing valve 3 are connected through the rear process hole 2 1022, the rear process hole 1 1021, and the second connecting hole 107, and the return oil returns to the oil tank through the upper process hole 2 109, the main oil outlet hole 102, and the oil port T. The piston 15 of the second built-in actuator 5 remains in the middle position under the action of the actuator spring 16.

[0043] When the electromagnet of the second electromagnetic reversing valve 3 is energized, port P2 is connected to port B2, port T2 is connected to port A2, and the pressure oil enters the pressure chamber, chamber B, right second flow channel 1033, left process hole 2 1014, front process hole 3 1012, lower process hole 2 1025, and rod chamber 19 of the second built-in actuator 5 from port P2 in sequence, the action rod 13 retracts, and the return oil in the rodless chamber 20 and the actuator spring chamber 21 of the second built-in actuator 5 passes through the lower process hole 1024, the left process hole 1 1013, the left second flow channel 1031, and chamber A of the second electromagnetic reversing valve 3 in sequence, the chamber A of the second electromagnetic reversing valve 3 is connected with the left T chamber, the right T chamber of the second electromagnetic reversing valve 3 is connected with the left T chamber, and the return oil returns to the oil tank through the upper process hole 2 109, the main oil outlet hole 102, and the oil port T.

Claims

1. A miniature integrated actuator, comprising a housing (1), a control element and a built-in actuator, characterized in that: The housing (1) is an integrally formed "convex" type mounting body. The housing (1) comprises a control body and an actuator. The control element is mounted on the control body of the housing (1). The built-in actuator is mounted on the actuator of the housing (1). The actuator has a cavity. A forward and backward telescopic actuating rod (13) is arranged in the cavity. The control element is in communication with the built-in actuator and controls its action. The control element comprises a throttle valve (6), a pressure reducing valve (7) and an electromagnetic reversing valve. The control body has an oil port P and an oil port T. The oil port P is connected to the built-in actuator. A throttle valve (6) and a pressure reducing valve (7) are provided, wherein the throttle valve (6) and the pressure reducing valve (7) are installed on the top of the housing (1); the built-in actuator comprises an actuating rod (13), a guide sleeve (14), a piston (15), an actuator spring (16), a T-shaped connector (17), a baffle (18), a front end cover (11), and a rear end cover (12); the cavity is a through hole with a stepped structure, comprising a first stepped hole (22), a second stepped hole (23), and a third stepped hole (24); the front end cover (11) and the rear end cover (12) are respectively The second stepped hole (23) is installed on the front and rear end surfaces of the cavity. The diameter of the second stepped hole (23) is smaller than the diameters of the first stepped hole (22) and the third stepped hole (24). The guide sleeve (14) is arranged in the first stepped hole (22). The action rod (13) passes through the front end cover (11) and the guide sleeve (14) and is connected to the piston (15) arranged in the second stepped hole (23). The piston (15) divides the second stepped hole (23) into a rod chamber (19) and a rodless chamber (20). Blocking plates (18) are arranged on both sides of the actuator spring (16). ) is passed through a T-shaped connecting piece (17), the T-shaped connecting piece (17) is connected to the other end of the piston (15), the actuator spring (16) is close to the piston (15) and abuts against the step end surface of the third step hole (24) through a baffle (18), the other side of the actuator spring (16) abuts against the T-shaped connecting piece (17) through a baffle (18), an actuator spring cavity (21) is formed between the baffles (18), and an opening is provided around the baffle (18) to connect the rodless cavity (20) and the actuator spring cavity (21).

2. The micro integrated actuator according to claim 1, characterized in that: The built-in actuator comprises a first built-in actuator (4) and a second built-in actuator (5) which are arranged in parallel.

3. The micro integrated actuator according to claim 2, characterized in that: The housing (1) is provided with a main oil pipeline (103); the upper end surface of the control body is provided with a throttle valve plug hole (1019) for installing a throttle valve (6) and a pressure reducing valve plug hole (1020) for installing a pressure reducing valve (7); the actuator body is provided with two cavities for accommodating a first built-in actuator (4) and a second built-in actuator (5) in a horizontal direction; the control body is provided with two independent core cavities, each of which is provided with a valve core; one of the core cavities is provided with an electromagnet at both ends, and together with the valve core in the core cavity, forms a first electromagnetic reversing valve (2); the other is provided with an electromagnet at both ends of the core cavity, and the electromagnet and the valve core in the core cavity form a first electromagnetic reversing valve (2); An electromagnet is provided at one end of the core cavity, and a plug is provided at the other end, and together with the valve core in the core cavity, a second electromagnetic reversing valve (3) is formed. The oil port P is connected to the throttle valve jack (1019), the pressure reducing valve jack (1020), and the main oil pipeline (103) in sequence. The main oil pipeline (103) is connected to the first electromagnetic reversing valve (2) and the second electromagnetic reversing valve (3), respectively. The first electromagnetic reversing valve (2) cooperates with the first built-in actuator (4) to conduct and control its action, and the second electromagnetic reversing valve (3) cooperates with the second built-in actuator (5) to conduct and control its action.

4. The micro integrated actuator according to claim 3, characterized in that: The rear end cover (12) is provided with a first accommodating groove (121) and a second accommodating groove (122); the T-shaped connecting piece (17) of the first built-in actuator (4) is located in the first accommodating groove (121); the T-shaped connecting piece (17) of the first built-in actuator (4) moves forward and backward relative to each other in the first accommodating groove (121); and the bottom of the T-shaped connecting piece (17) of the second built-in actuator (5) abuts against the bottom of the second accommodating groove (122).

5. The micro integrated actuator according to claim 4, characterized in that: The first electromagnetic reversing valve (2) is a three-position four-way valve, wherein the middle position is a Y function, and the second electromagnetic reversing valve (3) is a two-position four-way valve.

6. The micro integrated actuator according to claim 5, characterized in that: The first electromagnetic reversing valve (2) and the second electromagnetic reversing valve (3) are both provided with a left T chamber, an A chamber, a pressure chamber, a B chamber, and a right T chamber; each end surface of the housing (1) is provided with process holes: an upper process hole 1 (108), an upper process hole 2 (109), a front process hole 1 (1010), a front process hole 2 (1011), a front process hole 3 (1012), a left process hole 1 (1013), a left process hole 2 (1014), a left process hole 3 (1015), a right process hole 1 (1016), a right process hole 2 (1017), a right process hole 3 (1018), a rear process hole 1 (1021), a rear process hole 2 (1022), a rear process hole 3 (1023), a lower process hole 1 (1024), a lower process hole 1 (1025), a lower process hole 1 (1026), a lower process hole 1 (1027), a lower process hole 1 (1028), a lower process hole 1 (1029), a lower process hole 1 (1030), a lower process hole 1 (1031), a lower process hole 1 (1032), a lower process hole 1 (1033), a lower process hole 1 (1034), a lower process hole 1 (1035), a lower process hole 1 (1036), a lower process hole 1 (1037), a lower process hole 1 (1038), a lower process hole 1 (1039), a lower process hole 1 (1040), a lower process hole 1 (1041), a lower process hole 1 (1042), a lower process hole 1 (1043), a lower process hole 1 Hole 1 (1024), lower process hole 2 (1025), lower process hole 3 (1026), and lower process hole 4 (1027), wherein a main oil inlet hole (101) is provided at the oil port P of the housing (1), and the main oil inlet hole (101) is connected in sequence to the throttle valve plug hole (1019), the right process hole 1 (1016), the pressure reducing valve plug hole (1020), the left process hole 3 (1015), and the main oil pipeline (103), and the pressure reducing valve plug hole (1020) is also connected to the main oil outlet hole (102), and the main oil pipeline (103) is connected to the pressure chambers of the first electromagnetic reversing valve (2) and the second electromagnetic reversing valve (3) through the first middle flow channel (1029) and the second middle flow channel (1032) respectively; The A chamber of the first electromagnetic reversing valve (2) is connected in sequence to the left first flow channel (1028), the right process hole three (1018), the rear process hole three (1023), the lower process hole three (1026), and the actuator spring chamber (21) of the first built-in actuator (4); the B chamber of the first electromagnetic reversing valve (2) is connected in sequence to the right first flow channel (1030), the right process hole two (1017), the lower process hole four (1027), and the rod chamber (19) of the first built-in actuator (4); the left T chamber and the right T chamber of the first electromagnetic reversing valve (2) are connected to the upper process hole one (108) and the main oil outlet hole (102) through the front process hole one (1010), the front process hole two (1011), and the first connecting hole (106); The A chamber of the second electromagnetic reversing valve (3) is connected in sequence to the left second flow channel (1031), the left process hole 1 (1013), the lower process hole 1 (1024), and the actuator spring chamber (21) of the second built-in actuator (5); the B chamber of the second electromagnetic reversing valve (3) is connected in sequence to the right second flow channel (1033), the left process hole 2 (1014), the front process hole 3 (1012), the lower process hole 2 (1025), and the rod chamber (19) of the second built-in actuator (5); the left T chamber and the right T chamber of the second electromagnetic reversing valve (3) are connected to the upper process hole 2 (109) and the main oil outlet hole (102) through the rear process hole 2 (1022), the rear process hole 1 (1021), and the second connecting hole (107).

7. The micro integrated actuator according to claim 6, characterized in that: The ports on both sides of the main oil pipeline (103) are respectively externally connected to a pressure gauge (8) and an accumulator (9).

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