CN212250670U - Electric servo hydraulic generator - Google Patents
Electric servo hydraulic generator Download PDFInfo
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- CN212250670U CN212250670U CN202020020369.XU CN202020020369U CN212250670U CN 212250670 U CN212250670 U CN 212250670U CN 202020020369 U CN202020020369 U CN 202020020369U CN 212250670 U CN212250670 U CN 212250670U
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Abstract
The utility model discloses an electronic servo hydraulic pressure generator, include: the hydraulic oil cylinder assembly comprises a rack, a servo motor, an intermediate transmission mechanism, a rolling lead screw pair, a guide component and an oil cylinder assembly, wherein in the rolling lead screw pair, a rolling lead screw is in transmission connection with the output end of the servo motor through the intermediate transmission mechanism, a lead screw nut is fixedly connected with the guide component and drives the guide component to move axially, in the oil cylinder assembly, a plunger and the rolling lead screw are coaxially arranged and fixedly connected onto the guide component, and the plunger moves relatively in the oil cylinder under the driving of the guide component to generate high-pressure liquid oil to be output outwards. The generator detects the stroke of the plunger through the stroke displacement sensor, realizes the accurate control of the oil output quantity of the oil cylinder, detects the hydraulic pressure generated in the oil cylinder through the hydraulic sensor, and forms closed-loop control with the servo motor. The utility model discloses can be used to replace current hydraulic system and gas-liquid combined system, small, the operation is reliable and non-maintaining to can realize the accurate control of output oil mass and pressure.
Description
Technical Field
The utility model belongs to the technical field of servo hydraulic system, concretely relates to electronic servo hydraulic generator.
Background
In the field of servo hydraulic systems, a hydraulic source capable of accurately controlling output oil quantity and pressure is needed in many occasions. The traditional method adopts a hydraulic system consisting of a motor, an oil pump, a proportional valve or a servo valve, or a gas-liquid combined system consisting of cylinder pushing oil cylinders. The hydraulic system is complex and large in size, and is high in manufacturing cost, easy to leak and difficult to maintain; and the gas-liquid system needs to be provided with a gas source, so that the control precision is low and the response speed is slow.
Disclosure of Invention
To the defect that exists among the above-mentioned prior art, the utility model provides an electronic servo hydraulic pressure generator for replace current hydraulic system and gas-liquid combined system, its is small, the operation is reliable and non-maintaining, and can realize the accurate control of output oil mass and pressure, combine the description attached drawing, the technical scheme of the utility model as follows:
an electric servo hydraulic generator comprises a rack, a servo motor, an intermediate transmission mechanism, a rolling screw pair, a guide component and an oil cylinder assembly;
the servo motor is arranged at one end of the rack;
in the rolling screw pair, a rolling screw 5 is in transmission connection with the output end of a servo motor 2 through an intermediate transmission mechanism, and a screw nut 17 is fixedly connected with a guide assembly and drives the guide assembly to move axially along the rolling screw 5;
in the oil cylinder assembly, a plunger 19 and a rolling screw 5 are coaxially arranged and fixedly connected on a guide component, an oil cylinder 7 is fixed at the other end of a rack, and the plunger 19 is driven by the guide component to relatively move in the oil cylinder 7 so as to generate high-pressure liquid oil to be output outwards.
Further, the intermediate transmission mechanism is a gear transmission mechanism 3 or a synchronous toothed belt transmission mechanism.
Further, the guide assembly is composed of a guide seat 6, a guide post 13 and a linear bearing 18;
the two guide posts 13 are respectively positioned at two sides of the rolling screw 5 and are parallel to and coplanar with the rolling screw 5;
the guide seat main body in the middle of the guide seat 6 is sleeved outside the rolling screw 5, the screw nut 17 is positioned inside the guide seat main body and fixedly connected with the guide seat main body, and two sides of the guide seat 6 are respectively connected with the guide pillar 13 in a sliding manner through linear bearings 18.
Furthermore, in the oil cylinder assembly, the plunger 19 and the oil cylinder 7 are hermetically connected through a steckel combined seal ring 20.
Further, the end part of the rolling screw 5 is arranged on the rack through a bearing seat assembly;
the bearing seat assembly consists of a bearing seat 4, a bidirectional thrust bearing 15 and a deep groove ball bearing 16;
the bearing block 4 is fixedly arranged on the rack, and the end part of the rolling screw 5 penetrates through the bearing block 4 to be connected with the middle transmission mechanism;
the two-way thrust bearing 15 and the two deep groove ball bearings 16 are respectively installed in the bearing block 4 and are installed in a matched mode with the rolling screw 5, wherein the two-way thrust bearing 15 is used for bearing axial loads of the rolling screw 5, and the deep groove ball bearings 16 are used for radially positioning the rolling screw 5 and bearing radial loads of the middle transmission mechanism.
Further, the rack consists of a bottom plate 1, a left vertical plate 11 and a right vertical plate 12, wherein the left vertical plate 11 and the right vertical plate 12 are respectively and vertically fixed at two ends of the upper surface of the bottom plate 1;
the servo motor, the rolling screw 5 and the middle transmission mechanism are all arranged on the right vertical plate 12;
the oil cylinder 7 is arranged on the left vertical plate.
Further, the electric servo hydraulic generator also comprises a cylinder control assembly;
the oil cylinder control assembly consists of an oil storage cup 23, a manual valve 24, an electric control liquid supplementing valve 21 and an exhaust plug 22;
the oil storage cup 23 is connected with a liquid supplementing port pipeline of the oil cylinder 7 through an oil pipe;
the manual valve 24 and the electric control liquid supplementing valve 21 are respectively arranged on an oil path of the oil storage cup 23 connected with the oil cylinder 7;
the cylinder body of the oil cylinder 7 is also provided with an exhaust port, and the exhaust plug 22 is arranged in the exhaust port;
further, the electric servo hydraulic pressure generator further comprises a sensor assembly;
the sensor assembly includes: a stroke displacement sensor 8, a pressure sensor 9 and a stroke limit switch;
the stroke displacement sensor 8 is arranged on the rack and used for detecting the axial stroke displacement of the plunger 19;
the pressure sensor 9 is arranged on the side wall of the oil cylinder 7 and used for detecting hydraulic pressure in the oil cylinder 7 so as to realize closed-loop control on the servo motor 2;
the travel limit switch 10 is mounted on the rack and used for limiting the limit travel of the rolling screw pair driving the plunger 19 to axially move through the guide assembly.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. electronic servo hydraulic pressure generator adopts the servo motor drive to take tooth drive mechanism through gear drive mechanism or synchronization, and the vice power transmission that realizes of ball screw, the operation is reliable and stable.
2. Electronic servo hydraulic pressure generator passes through the stroke that stroke displacement sensor detected the plunger, realizes the accurate control to hydro-cylinder output oil mass to through the hydraulic pressure that produces in the hydraulic pressure sensor detection hydro-cylinder, form closed-loop control with servo motor, realize the output pressure of accurate control hydro-cylinder.
3. Electronic servo hydraulic pressure generator simple structure is compact, and occupation of land space is little, and non-maintaining.
Drawings
Fig. 1 is a front view of the electric servo hydraulic generator of the present invention when a gear transmission mechanism is adopted;
FIG. 2 is a front view of the electric servo hydraulic generator of the present invention using a synchronous belt drive;
fig. 3 is a side view of the electric servo hydraulic generator according to the present invention, which employs a gear transmission mechanism;
fig. 4 is a top view of the electric servo hydraulic generator of the present invention when the electric servo hydraulic generator employs a gear transmission mechanism.
In the figure:
1-a bottom plate, 2-a servo motor, 3-a gear transmission mechanism, 4-a bearing seat,
5-rolling screw rod, 6-guide seat, 7-oil cylinder, 8-travel displacement sensor,
9-a pressure sensor, 10-a travel limit switch, 11-a left vertical plate, 12-a right vertical plate,
13-guide post, 14-synchronous toothed belt transmission mechanism, 15-bidirectional thrust bearing, 16-deep groove ball bearing,
17-lead screw nut, 18-linear bearing, 19-plunger, 20-steckel combined seal ring,
21-an electric control liquid replenishing valve, 22-an exhaust plug, 23-an oil storage cup, 24-a manual valve,
25-output interface.
Detailed Description
For clear and complete description of the technical solution and the specific working process of the present invention, the following embodiments are provided in conjunction with the accompanying drawings of the specification:
the utility model discloses an electronic servo hydraulic pressure generator, include: the device comprises a rack, a servo motor, an intermediate transmission mechanism, a bearing seat assembly, a rolling screw pair, a guide assembly, a sensor assembly, an oil cylinder assembly and an oil cylinder control assembly.
As shown in fig. 1 and 4, the rack is a base of the whole generator and used for supporting and installing other components, and the rack is composed of a bottom plate 1, a left vertical plate 11 and a right vertical plate 12, wherein the bottom plate 1 is horizontally arranged, the left vertical plate 11 is vertically fixed on the left side of the top surface of the bottom plate 1, and the right vertical plate 12 is vertically fixed on the right side of the top surface of the bottom plate 1.
The servo motor 2 is horizontally arranged, an output end shell of the servo motor is fixedly arranged on the right vertical plate 12, an output shaft of the servo motor 2 penetrates through the right vertical plate 12 to be coaxially connected with a driving end of the middle transmission mechanism, and a driven end of the middle transmission mechanism is coaxially connected with the rolling lead screw pair.
As shown in fig. 1 and fig. 3, the intermediate transmission mechanism may adopt a gear transmission mechanism 3, a driving gear of the gear transmission mechanism 3 is coaxially installed on an output shaft of the servo motor 2, a driven gear of the gear transmission mechanism 3 is coaxially installed on a rolling screw 5 of the rolling screw pair, and the driving gear of the gear transmission mechanism 3 is engaged with the driven gear, so that power is output from the servo motor and is transmitted to the rolling screw 5 of the rolling screw pair through the gear transmission mechanism 3.
As shown in fig. 2, the intermediate transmission mechanism may be a synchronous belt transmission mechanism 14, a driving pulley of the synchronous belt transmission mechanism 14 is coaxially installed on an output shaft of the servo motor 2, a driven gear of the synchronous belt transmission mechanism 14 is coaxially installed on the rolling screw 5 of the rolling screw pair, and the driving pulley of the synchronous belt transmission mechanism 14 realizes synchronous transmission between the driven pulleys through a belt, so that power is output from the servo motor and transmitted to the rolling screw 5 of the rolling screw pair through the synchronous belt transmission mechanism 14.
As shown in fig. 1, a rolling screw 5 in the rolling screw pair is supported and mounted on a right vertical plate 12 through a bearing seat assembly, the bearing seat assembly is composed of a bearing seat 4, a two-way thrust bearing 15 and a deep groove ball bearing 16, wherein the bearing seat 4 is fixedly mounted on the right vertical plate 12, the right end of the rolling screw 5 penetrates through the bearing seat 4 and is coaxially connected with the driven end of an intermediate transmission mechanism, a set of two-way thrust bearing 15 and two deep groove ball bearings 16 are mounted in the bearing seat 4 in a manner of being matched with the rolling screw 5, the two-way thrust bearing 15 is used for bearing the axial load of the rolling screw 5, and the two deep groove ball bearings 16 are mounted at one end close to the intermediate transmission mechanism and are used for radially positioning the rolling screw 5 and bearing the radial load of the intermediate transmission.
As shown in fig. 1 and 4, the guide assembly is composed of a guide base 6, guide posts 13 and linear bearings 18, wherein the two guide posts 13 are respectively located at two sides of the rolling screw 5, the two guide posts 13 and the rolling screw 5 are parallel and coplanar, two ends of the guide posts 13 are respectively and correspondingly installed on the left vertical plate 11 and the right vertical plate 12, a guide base main body in the middle of the guide base 6 is sleeved at the outer side of the rolling screw 5, a screw nut 17 in the rolling screw pair is located at the inner side of the guide base main body and is in threaded connection with the rolling screw 5 to form the rolling screw pair, an outer edge surface at one end of the screw nut 17 is fixedly connected with an end surface of the guide base main body, and two side wings of the guide base 6 are respectively and slidably connected on the guide posts 13 at.
As shown in fig. 1 and 4, the oil cylinder assembly is a plunger type oil cylinder assembly, and comprises an oil cylinder 7 and a plunger 19, wherein a cylinder opening end of the oil cylinder 7 is fixedly installed on the left vertical plate 11, one end of the plunger 19 is fixedly connected with the guide seat 6, the other end of the plunger 19 extends into the oil cylinder 7, and the plunger 19 is hermetically connected with the oil cylinder 7 through a steckel combined seal ring 20, so that the sealing form is reliable and the resistance is small; the plunger 19 is arranged coaxially with the ball screw 5.
As shown in fig. 1, the cylinder control assembly includes: the automatic liquid supplementing device comprises an oil storage cup 23, a manual valve 24, an electric control liquid supplementing valve 21 and an exhaust plug 22, wherein the oil storage cup 23 is connected with a liquid supplementing port pipeline of the oil cylinder 7 through an oil pipe, and the manual valve 24 and the electric control liquid supplementing valve 21 are respectively installed on an oil path where the oil storage cup 23 is connected with the oil cylinder 7 so as to realize automatic liquid supplementing of the oil cylinder 7; the cylinder body of the oil cylinder 7 is also provided with an exhaust port, the exhaust plug 22 is arranged in the exhaust port, and the exhaust port can be used for exhausting redundant gas in the oil cylinder 7 on one hand and can be used as a pressure calibration interface on the other hand; the tail part of the oil cylinder 7 is also provided with an output interface 25 to realize the output of high-pressure liquid oil.
As shown in fig. 1 and 4, the sensor assembly includes: a stroke displacement sensor 8, a pressure sensor 9 and a stroke limit switch; the stroke displacement sensor 8 is installed on the left vertical plate 11, the detection end of the stroke displacement sensor 8 is in contact connection with one side wing of the guide seat 6, and axial stroke displacement of the plunger 19 fixedly connected with the guide seat 6 is obtained by detecting axial displacement of the guide seat 6; the pressure sensor 9 is mounted on the side wall of the oil cylinder 7 and used for detecting hydraulic pressure in the oil cylinder 7, and a control system (not shown in the figure) of the generator adjusts output of the servo motor 2 according to the hydraulic pressure generated in the oil cylinder 7 obtained through detection and the like, so that closed-loop control over the servo motor 2 is realized; the travel limit switch 10 is arranged on the rolling screw auxiliary shaft in the upward direction and is fixedly installed on the left vertical plate 11, and the travel limit switch 10 is used for detecting the axial position of the guide seat 6 and further controlling the axial limit travel of the rolling screw auxiliary shaft.
In the electric servo hydraulic generator, the specific specification and size of the servo motor 2 and the rolling screw pair, the diameter and stroke of the plunger 19, the length of the oil cylinder 7 and the like can be determined according to the requirement.
The working process brief of electronic servo hydraulic pressure generator says as follows:
as shown in fig. 1, a servo motor 2 drives a gear transmission mechanism 3 to operate, and transmits power to a ball screw pair, in the ball screw pair, a ball screw 5 rotates to drive a screw nut 17 to linearly move along an axial direction, the screw nut 17 drives a guide seat 6 to linearly slide along a guide post 13, the guide seat 6 further drives a plunger 19 to linearly move along the axial direction of an oil cylinder 7, high-pressure liquid oil is generated in the oil cylinder 7 and output through an output interface under the pushing force of the plunger 17, in the process, a stroke displacement sensor 8 detects the stroke of the plunger 19, so that the accurate control of the output oil quantity of the oil cylinder 7 is realized, the liquid oil pressure generated in the oil cylinder 7 is detected through a pressure sensor 9, the closed-loop control is formed on the servo motor 2, and the output pressure of the oil cylinder 7.
Claims (8)
1. An electric servo hydraulic generator, characterized in that:
the device consists of a rack, a servo motor, an intermediate transmission mechanism, a rolling lead screw pair, a guide component and an oil cylinder assembly;
the servo motor is arranged at one end of the rack;
in the rolling screw pair, a rolling screw (5) is in transmission connection with the output end of a servo motor (2) through an intermediate transmission mechanism, and a screw nut (17) is fixedly connected with a guide assembly and drives the guide assembly to axially move along the rolling screw (5);
in the oil cylinder assembly, a plunger (19) and a rolling screw (5) are coaxially arranged and fixedly connected on a guide assembly, an oil cylinder (7) is fixed at the other end of a rack, and the plunger (19) is driven by the guide assembly to relatively move in the oil cylinder (7) so as to generate high-pressure liquid oil to be output outwards.
2. An electrically-actuated servo hydraulic generator as defined in claim 1, wherein:
the intermediate transmission mechanism is a gear transmission mechanism (3) or a synchronous toothed belt transmission mechanism.
3. An electrically-actuated servo hydraulic generator as defined in claim 1, wherein:
the guide assembly consists of a guide seat (6), a guide post (13) and a linear bearing (18);
the two guide columns (13) are respectively positioned on two sides of the rolling screw (5) and are parallel to and coplanar with the rolling screw (5);
the guide seat body in the middle of the guide seat (6) is sleeved on the outer side of the rolling screw rod (5), the screw rod nut (17) is located on the inner side of the guide seat body and fixedly connected with the guide seat body, and two sides of the guide seat (6) are respectively connected with the guide pillar (13) in a sliding mode through the linear bearing (18).
4. An electrically-actuated servo hydraulic generator as defined in claim 1, wherein:
in the oil cylinder assembly, a plunger (19) is in sealing connection with an oil cylinder (7) through a Stent seal combined seal ring (20).
5. An electrically-actuated servo hydraulic generator as defined in claim 1, wherein:
the end part of the rolling screw rod (5) is arranged on the rack through a bearing seat assembly;
the bearing seat assembly consists of a bearing seat (4), a bidirectional thrust bearing (15) and a deep groove ball bearing (16);
the bearing seat (4) is fixedly arranged on the rack, and the end part of the rolling lead screw (5) penetrates through the bearing seat (4) to be connected with the middle transmission mechanism;
the two-way thrust bearing (15) and the two deep groove ball bearings (16) are respectively installed in the bearing seat (4) and are installed in a matched mode with the rolling screw (5), wherein the two-way thrust bearing (15) is used for bearing axial load of the rolling screw (5), and the deep groove ball bearings (16) are used for radially positioning the rolling screw (5) and bearing radial load of the middle transmission mechanism.
6. An electrically-actuated servo hydraulic generator as defined in claim 1, wherein:
the rack consists of a bottom plate (1), a left vertical plate (11) and a right vertical plate (12), wherein the left vertical plate (11) and the right vertical plate (12) are respectively and vertically fixed at two ends of the upper surface of the bottom plate (1);
the servo motor, the rolling screw rod (5) and the middle transmission mechanism are all arranged on the right vertical plate (12);
the oil cylinder (7) is arranged on the left vertical plate.
7. An electrically-actuated servo hydraulic generator as defined in claim 1, wherein:
the device also comprises an oil cylinder control assembly;
the oil cylinder control assembly consists of an oil storage cup (23), a manual valve (24), an electric control liquid supplementing valve (21) and an exhaust plug (22);
the oil storage cup (23) is connected with a liquid supplementing port pipeline of the oil cylinder (7) through an oil pipe;
the manual valve (24) and the electric control liquid replenishing valve (21) are respectively arranged on an oil path connecting the oil storage cup (23) and the oil cylinder (7);
an exhaust port is also formed in the cylinder body of the oil cylinder (7), and the exhaust plug (22) is arranged in the exhaust port;
the tail of the oil cylinder (7) is also provided with an output interface (25).
8. An electrically-actuated servo hydraulic generator as defined in claim 1, wherein:
also includes a sensor assembly;
the sensor assembly includes: a stroke displacement sensor (8), a pressure sensor (9) and a stroke limit switch;
the stroke displacement sensor (8) is arranged on the rack and used for detecting the axial stroke displacement of the plunger (19);
the pressure sensor (9) is arranged on the side wall of the oil cylinder (7) and used for detecting hydraulic pressure in the oil cylinder (7) so as to realize closed-loop control on the servo motor (2);
the stroke limit switch (10) is arranged on the rack and used for limiting the limit stroke of the rolling screw pair for driving the plunger (19) to axially move through the guide assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020020369.XU CN212250670U (en) | 2020-01-07 | 2020-01-07 | Electric servo hydraulic generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020020369.XU CN212250670U (en) | 2020-01-07 | 2020-01-07 | Electric servo hydraulic generator |
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| CN212250670U true CN212250670U (en) | 2020-12-29 |
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| CN202020020369.XU Active CN212250670U (en) | 2020-01-07 | 2020-01-07 | Electric servo hydraulic generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120448A (en) * | 2020-01-07 | 2020-05-08 | 吉林大学 | Electric servo hydraulic generator |
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2020
- 2020-01-07 CN CN202020020369.XU patent/CN212250670U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120448A (en) * | 2020-01-07 | 2020-05-08 | 吉林大学 | Electric servo hydraulic generator |
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