An intelligent remote-controlled heavy-duty hydraulic cylinder based on the Internet of Things

Abstract

The present invention relates to an intelligent remote-controlled heavy-load hydraulic cylinder based on the Internet of Things, comprising a cylinder body, a guide sleeve, a piston, a piston rod, and a cylinder bottom. The guide sleeve is arranged at the upper end of the cylinder body, the cylinder bottom is arranged at the lower end of the cylinder body, and the piston is arranged at the lower end of the piston rod. The piston rod and the piston are placed in the cylinder body, and the piston divides the inner cavity of the cylinder body into a rodless cavity and a rod cavity. A bidirectional motor pump is arranged in the piston, and the piston is provided with an oil channel 1 connected to the rodless cavity, and the piston body is provided with an oil channel 2 connected to the rod cavity. The bidirectional motor pump inputs or outputs pressure through the oil channel 1 and the oil channel 2. A cavity is arranged in the piston rod, and a motor, a battery, and a control component electrically connected to each other are arranged in the cavity. The driving shaft of the motor is connected to drive the bidirectional motor pump to rotate forward or reverse. The driving force is the strongest, the installation distance is short, the structure is compact, and there is no external system, pipeline and cable. It is suitable for various occasions and various working environments, can be remotely controlled, and has energy recovery and power distribution characteristics. The pump control system has low energy consumption and is widely used.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent hydraulic actuators, and in particular relates to an intelligent remote-controlled heavy-load hydraulic cylinder based on the Internet of Things. Background Art

[0002] As an actuator, the hydraulic cylinder has the characteristics of high energy density and stable drive compared with electric cylinders and pneumatic cylinders. However, the hydraulic cylinder requires a special hydraulic system for control, and there are complicated connecting pipes between the two. The failure rate is high, the volume is large, and the energy loss of electrical and hydraulic transmission is large. It cannot meet the many demanding requirements of the current intelligent control field. With the development of technology, the current actuator machinery generally needs to be connected to the Internet for intelligent control, but the current hydraulic cylinder does not have the ability to be independently integrated into the Internet of Things for intelligent control as a single unit. Summary of the Invention

[0003] In order to solve the problem of intelligent control of hydraulic cylinders, the present invention invents an intelligent remote-controlled heavy-duty hydraulic cylinder based on the Internet of Things.

[0004] The present invention adopts the following technical solutions:

[0005] An intelligent remote-controlled heavy-load hydraulic cylinder based on the Internet of Things includes a cylinder body, a guide sleeve, a piston, a piston rod, and a cylinder bottom. The guide sleeve is connected to the upper end of the cylinder body, the cylinder bottom is set at the lower end of the cylinder body, and the piston is connected to the lower end of the piston rod. The piston rod and the piston are placed in the cylinder body. The piston divides the inner cavity of the cylinder body into a rodless cavity and a rod cavity. A bidirectional motor pump is provided in the piston. The piston is provided with an oil channel 1 connected to the rodless cavity, and the piston body is provided with an oil channel 2 connected to the rod cavity. The bidirectional motor pump inputs or outputs pressure through the oil channel 1 and the oil channel 2. A cavity is provided in the piston rod, and a motor, a battery, and control components electrically connected to each other are provided in the cavity. The drive shaft of the motor is connected to drive the bidirectional motor pump to rotate forward or reverse.

[0006] The inner hole of the guide sleeve is further provided with an inner ring groove cavity, which is a cavity with a certain compressible volume, and the inner ring groove cavity is connected with the rod cavity.

[0007] The bidirectional motor pump is a plunger-type bidirectional motor pump or an internal meshing bidirectional gear motor pump.

[0008] The control components include: a single-chip microcomputer, a WIFI module, a Bluetooth module, and a driver. The WIFI module and the Bluetooth module are connected to the single-chip microcomputer, the single-chip microcomputer is connected to the driver, the driver controls the motor, and the control components are provided with an external remote control line. The remote control line is connected to the piston rod body as an antenna for wireless data transmission to the outside.

[0009] The cavity includes: a hollow cavity, a control cavity, and a battery cavity. The motor is arranged in the hole at the lower end of the hollow cavity. A connecting hole is arranged at the lower end of the hollow cavity. The connecting hole connects the hollow cavity and the rod cavity. A high-pressure watertight joint is arranged at the upper end of the hollow cavity. A connecting cable is arranged between the lower end of the high-pressure watertight joint and the motor. A control cavity is arranged at the upper end of the high-pressure watertight joint. A battery cavity is arranged at the upper end of the control cavity. Control components are arranged in the control cavity. Batteries are arranged in the battery cavity. The wires at the upper end of the high-pressure watertight joint are connected to the control components, and the wires of the control components are connected to the batteries.

[0010] The guide sleeve includes: a guide sleeve body, a channel K, and a channel M. A spacer is provided in the inner ring groove cavity, and the inner circle and outer circle of the spacer are respectively sealed. The spacer divides the inner ring groove cavity into an upper cavity and a lower cavity. Among them, the channel K connects the upper cavity and the external environment, and the upper cavity is filled with pressurized gas. The external orifice of the channel K is sealed with a screw plug, and the channel M connects the lower cavity and the rod cavity.

[0011] The diaphragm can also be a rubber diaphragm annularly glued to the inner ring groove cavity, and the rubber diaphragm divides the inner ring groove cavity into an upper cavity and a lower cavity.

[0012] The guide sleeve includes: a guide sleeve body, a channel K, a one-way valve 1, a one-way valve 2, and a sealing ring. The guide sleeve body is provided with a one-way valve 1 and a one-way valve 2. The one-way valve 1 is connected to the inner ring groove cavity and the rod cavity in one direction, and the one-way valve 2 is connected to the rod cavity and the inner ring groove cavity in one direction. The channel K is connected to the atmosphere, and the one-way valve 2 is provided with a pre-compression spring.

[0013] The piston includes: a piston body, an inner gear ring, a bidirectional crescent plate, and an internal gear. Specifically, the piston body serves as the pump body of an internally meshing bidirectional gear motor pump with a built-in pump core. The pump core includes: an inner gear ring, a bidirectional crescent plate, and an internal gear. The piston body is provided with an oil passage 1 connected to the rodless chamber, and the piston body is provided with an oil passage 2 connected to the rod chamber.

[0014] The motor is any one of a closed motor, a closed servo motor, a high-voltage motor, and a high-voltage servo motor.

[0015] Compared with the existing technology, the present invention can achieve the following technical effects: compared with other drivers, it has the strongest driving force of the same volume, the driving pressure can be ultra-high pressure, the installation distance is the shortest, the structure is compact, there is no external system, pipelines and cables, it is suitable for various occasions and various working environments, can be remotely controlled, has energy recovery and power distribution characteristics, the pump control system has low energy consumption, and is widely used. It can meet ordinary linear large-load driving conditions and can also be used for wireless Internet of Things applications in vehicles, such as automobile shock absorption, active telescopic shock absorption and passive telescopic energy storage.

[0016] The present invention realizes the intelligence and modularization of the hydraulic cylinder and the capability of Internet of Things. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural diagram of embodiment 1 of the present invention;

[0018] Figure 2 is a structural diagram of embodiment 2 of the present invention;

[0019] Figure 3 yes Figure 1 AA section diagram;

[0020] Figure 4 It is a hydraulic principle diagram of the present invention.

[0021] Among them, 1-cylinder body, 2-guide sleeve, 3-piston, 4-piston rod, 5-cylinder bottom, 6-hole seal, 7-spacer, 8-shaft seal, 9-high-pressure watertight joint, 10-rodless cavity, 11-rod cavity, 12-motor, 13-cable, 14-filling hole, 15-control components, 16-remote control line, 17-battery, 18-external connector, 201-guide sleeve, 202-channel K, 203-upper chamber, 204-lower chamber, 205-channel M, 206-one-way valve 1, 207-one-way valve 2, 208-sealing ring, 301-piston body, 302-inner gear ring, 303-two-way crescent plate, 304-internal gear, 305-oil channel 1, 306-oil channel 2, 401-connecting hole, 402-hollow cavity, 403-control chamber, 404-battery chamber, 405-inner threaded hole. DETAILED DESCRIPTION

[0022] like Figure 1-4 , an intelligent remote-controlled heavy-duty hydraulic cylinder based on the Internet of Things, comprising: a cylinder body 1, a guide sleeve 2, a piston 3, a piston rod 4, and a cylinder bottom 5. The upper end of the cylinder body 1 is threadedly connected to a guide sleeve 2, the lower end of the cylinder body 1 is welded to a cylinder bottom 5, the lower end of the piston rod 4 is screwed to a piston 3, the piston rod 4 and the piston 3 are placed in the cylinder body 1, the piston 3 separates the inner cavity of the cylinder body 1 into a rodless cavity 10 and a rod cavity 11, the outer circle of the piston 3 is provided with a hole for sealing 6, a bidirectional motor pump is provided in the piston 3, the bidirectional motor pump is specifically a pump that can be rotated forward and reverse, and can also be used as a bidirectional motor, for example: a plunger-type bidirectional motor pump, or an internally meshing bidirectional gear motor pump, such as Figure 4Taking the internal meshing bidirectional gear motor pump as an example, the piston 3 includes: a piston body 301, an inner gear ring 302, a bidirectional crescent plate 303, and an internal gear 304. Specifically, the piston body 301 serves as the pump body of the internal meshing bidirectional gear motor pump, and has a built-in pump core. The pump core includes: an inner gear ring 302, a bidirectional crescent plate 303, and an internal gear 304. The piston body 301 is provided with an oil passage 305 connected to the rodless chamber 10. The piston body 301 is provided with an oil passage 2 306 connected to the rod chamber 11. A plurality of chambers are provided in the piston rod 4, specifically including: a hollow chamber 402, a control chamber 403, and a battery chamber 404. The control chamber 403 and the battery chamber 404 are adjacent to each other and are connected. A motor 12 is provided in the hole at the lower end of the hollow chamber 402. The driving end of the motor 12 is connected to the piston body 301. The driving shaft of the motor 12 drives the pump core to work. A connecting hole 401 is provided at the lower end of the hollow chamber 402. The connecting hole 401 connects the hollow chamber 402 and the rod chamber 11. A high-pressure watertight joint 9 is provided at the upper end of the hollow chamber 402. A connecting cable 13 is provided between the lower end of the high-pressure watertight joint 9 and the motor 12. The control chamber 403 is provided at the upper end of the high-pressure watertight joint 9. A battery cavity 404 is provided at the upper end of the control cavity 403, a control component 15 is provided in the control cavity 403, a battery 17 is provided in the battery cavity 404, a wire at the upper end of the high-pressure watertight joint 9 is connected to the control component, a wire of the control component 15 is connected to the battery 17, an internal threaded hole 405 is provided at the upper end of the piston rod 4, the internal threaded hole is used to install an external connector 18, such as connecting earrings, etc., an external connector is provided in the internal threaded hole to close the battery cavity 404 and fix the battery 17, an external remote control line 16 is provided for the control component, the remote control line 16 is connected to the piston rod body, and the metal piston rod body is used as an antenna for wireless data transmission to the outside, a filling hole 14 is provided on the wall of the cylinder body 1 connected to the rod cavity 11, and a screw plug is provided at the filling hole.

[0023] The motor 12 is any one of a closed motor, a closed servo motor, a high-voltage motor, and a high-voltage servo motor.

[0024] The control components 15 include: a single-chip microcomputer, a WIFI module, a Bluetooth module, a driver, and a power management system. The WIFI module and the Bluetooth module are used to input and output wireless signals. The WIFI module and the Bluetooth module are connected to the single-chip microcomputer, the single-chip microcomputer is connected to the driver and the power management system, and the power management system is connected to the battery 17.

[0025] like Figure 1As shown, a shaft seal 8 is provided in the inner hole of the guide sleeve 2, and an inner ring groove cavity is also provided in the inner hole of the guide sleeve 2; the guide sleeve 2 includes two structural embodiments, embodiment 1, the guide sleeve 2 includes: a guide sleeve body 201, a channel K202, and a channel M205, a spacer 7 is provided in the inner ring groove cavity, the inner circle and the outer circle of the spacer 7 are respectively provided with seals, and the spacer 7 separates the inner ring groove cavity into an upper cavity 203 and a lower cavity 204, wherein the channel K202 connects the upper cavity 203 and the external environment, the upper cavity 203 is filled with pressurized gas, the external orifice of the channel K202 is sealed with a screw plug, the channel M205 connects the lower cavity 204 and the rod cavity 11, the pressure medium of the rod cavity 11 enters the lower cavity 204, and the spacer 7 floats up and down in the inner ring groove cavity under the pressure at both ends.

[0026] Furthermore, the diaphragm 7 provided in the inner annular groove cavity may also be a rubber diaphragm in an annular shape glued to the inner annular groove cavity.

[0027] like Figure 2 As shown, in embodiment 2, the guide sleeve 2 includes: a guide sleeve body 201, a channel K202, a one-way valve 1 206, a one-way valve 207, and a sealing ring 208. The guide sleeve body 201 is provided with a one-way valve 1 206 and a one-way valve 207. The one-way valve 1 206 is connected to the inner ring groove cavity and the rod cavity 11 in one direction, and the one-way valve 207 is connected to the rod cavity 11 and the inner ring groove cavity in one direction. A small sealing seal 208 is provided in the inner hole of the guide sleeve 2. The small seal 208 seals and isolates the inner ring groove cavity and the rod cavity 11 to prevent collusion, and the channel K202 is connected to the atmosphere.

[0028] Furthermore, the second one-way valve 207 is provided with a pre-compression spring.

[0029] Working method:

[0030] like Figure 1-2 In the first embodiment, the upper chamber 203 is filled with pressurized gas, and the filling hole 14 injects liquid medium into the rod chamber 11. The battery 17 provides power to the single-chip microcomputer. The external control signal is transmitted to the single-chip microcomputer through the WIFI module or the Bluetooth module. The single-chip microcomputer performs data storage and calculation processing. The output signal controls the power output of the battery 17 and the output signal controls the driver. The battery 17 provides power to the motor 12. The driver controls the motor 12 to output torque rotation. The rod chamber 11 enters the pump core through the oil channel 2 306. The internal meshing bidirectional gear motor pump rotates forward and reversely, so that the pressure medium enters the rodless chamber 10 through the oil channel 1 305, and the pressure medium enters the lower chamber 204 through the channel M205. The pressure medium enters the hollow chamber 402 through the connecting hole 401, and the diaphragm 7 floats and compresses the upper chamber 203. The lower chamber 204 stores the pressure medium to compensate for the volume difference between the rod chamber and the rodless chamber. Figure 1-3When oil channel 2 306 is sucked, oil channel 1 305 outputs pressure, pressure in the rodless chamber 10 is established, the piston rod extends, and the medium in the lower chamber 204 and the rod chamber 11 is pumped into the rodless chamber 10. When oil channel 1 305 is sucked, oil channel 2 306 outputs pressure, pressure in the rod chamber 11 is established, the piston rod retracts, and the medium in the rodless chamber 10 is pumped into the lower chamber 204 and the rod chamber 11. The setting of the hollow chamber 402 is used to reduce the volume ratio of the rod chamber 11 to the rodless chamber 10, and is beneficial to cooling the heat generated by the motor.

[0031] like Figure 1-2 In the second embodiment, liquid medium is injected into the inner ring groove cavity through the hole K202, and liquid medium is injected into the rod cavity 11 through the filling hole 14. The battery 17 provides power to the single-chip microcomputer. The external control signal is transmitted to the single-chip microcomputer through the WIFI module or the Bluetooth module. The single-chip microcomputer performs data storage and calculation processing. The output signal controls the power output of the battery 17 and the output signal controls the driver. The battery 17 provides power to the motor 12. The driver controls the motor 12 to output torque rotation. The rod cavity 11 enters the pump core through the oil channel 2 306. The internal meshing bidirectional gear motor pump rotates forward and reversely, so that the pressure medium enters the rodless cavity 10 through the oil channel 1 305, and the pressure medium enters the inner ring groove cavity through the one-way valve 2 207. The pressure medium enters the hollow cavity 402 through the connecting hole 401. The inner ring groove cavity stores the pressure medium to compensate for the volume difference between the rod cavity and the rodless cavity. Figure 1-3 When the oil channel 2 306 is sucked, the oil channel 1 305 outputs pressure, the pressure in the rodless chamber 10 is established, the piston rod extends, and the medium in the inner ring groove chamber enters the rod chamber 11 through the one-way valve 1 206, and the medium in the rod chamber 11 is pumped into the rodless chamber 10. When the oil channel 1 305 is sucked, the oil channel 2 306 outputs pressure, the pressure in the rod chamber 11 is established, the piston rod retracts, the medium in the rodless chamber 10 is pumped into the rod chamber 11, and the medium enters the inner ring groove chamber through the one-way valve 2 207. The setting of the hollow cavity 402 is used to reduce the volume ratio of the rod chamber 11 to the rodless chamber 10, and at the same time is beneficial to cooling the heat generated by the motor.

[0032] In the third embodiment, when the load end is used as the power input to actively drive the piston rod to extend and retract, a pressure difference is generated between the oil channel 1 305 and the oil channel 2 306, driving the internal meshing bidirectional gear motor pump, which outputs torque as the motor, drives the motor 17 to rotate, generates electrical energy feedback and charges the battery 17 for charging and energy storage, and part of the electricity is provided to the single-chip microcomputer, etc. The battery 17 can be replaced by an external cable to provide long-term power output or input.

Claims

1. An intelligent remote-controlled heavy-duty hydraulic cylinder based on the Internet of Things, comprising a cylinder body (1), a guide sleeve (2), a piston (3), a piston rod (4), and a cylinder bottom (5), wherein the upper end of the cylinder body (1) is connected to the guide sleeve (2), the lower end of the cylinder body (1) is provided with the cylinder bottom (5), the lower end of the piston rod (4) is connected to the piston (3), the piston rod (4) and the piston (3) are placed in the cylinder body (1), and the piston (3) separates the inner cavity of the cylinder body (1) into a rodless cavity (10) and a rod cavity (11), and is characterized in that: A bidirectional motor pump is provided in the piston (3), the piston (3) is provided with an oil passage 1 (305) connected to the rodless chamber (10), the piston body (301) is provided with an oil passage 2 (306) connected to the rod chamber (11), the bidirectional motor pump inputs or outputs pressure through the oil passage 1 (305) and the oil passage 2 (306), the piston rod (4) is provided with a chamber, the chamber is provided with a motor (12), a battery (17), and a control component (15) which are electrically connected to each other, and the drive shaft of the motor (12) is connected to drive the bidirectional motor pump to rotate forward or reverse; The cavity comprises: a hollow cavity (402), a control cavity (403), and a battery cavity (404); the motor (12) is arranged in the lower end hole of the hollow cavity (402); a connecting hole (401) is arranged at the lower end of the hollow cavity (402); the connecting hole (401) connects the hollow cavity (402) and the rod cavity (11); a high-pressure watertight joint (9) is arranged at the upper end of the hollow cavity (402); a connecting cable (13) is arranged between the lower end of the high-pressure watertight joint (9) and the motor (12); a control cavity (403) is arranged at the upper end of the high-pressure watertight joint (9); a battery cavity (404) is arranged at the upper end of the control cavity (403); a control component (15) is arranged in the control cavity (403); a battery (17) is arranged in the battery cavity (404); a wire at the upper end of the high-pressure watertight joint (9) is connected to the control component, and a wire of the control component (15) is connected to the battery (17); The motor (12) is any one of a closed motor, a closed servo motor, a high-voltage motor, and a high-voltage servo motor.

2. The intelligent remote-controlled heavy-duty hydraulic cylinder based on the Internet of Things according to claim 1, characterized in that: The inner hole of the guide sleeve (2) is further provided with an inner ring groove cavity, the inner ring groove cavity is a cavity with a certain compressible volume, and the inner ring groove cavity is connected to the rod cavity (11).

3. The intelligent remote-controlled heavy-duty hydraulic cylinder based on the Internet of Things according to claim 2, characterized in that: The bidirectional motor pump is a plunger-type bidirectional motor pump or an internal meshing bidirectional gear motor pump.

4. The intelligent remote-controlled heavy-duty hydraulic cylinder based on the Internet of Things according to claim 3, characterized in that: The control component (15) includes: a single-chip microcomputer, a WIFI module, a Bluetooth module, a driver, and a power management system. The WIFI module and the Bluetooth module are connected to the single-chip microcomputer, the single-chip microcomputer is connected to the driver and the power management system, the power management system is connected to the battery (17), and the driver controls the motor (12). The control component (15) is provided with an external remote control line (16), and the remote control line (16) is connected to the piston rod body as an antenna to perform wireless data transmission to the outside.

5. The intelligent remote-controlled heavy-duty hydraulic cylinder based on the Internet of Things according to any one of claims 1 to 4, characterized in that: The guide sleeve (2) comprises: a guide sleeve body (201), a channel K (202), and a channel M (205). A spacer (7) is provided in the inner ring groove cavity. The inner circle and outer circle of the spacer (7) are respectively provided with seals. The spacer (7) separates the inner ring groove cavity into an upper cavity (203) and a lower cavity (204). The channel K (202) connects the upper cavity (203) and the external environment. The upper cavity (203) is filled with pressurized gas. The external opening of the channel K (202) is provided with a screw plug for sealing. The channel M (205) communicates with the lower cavity (204) and the rod cavity (11).

6. The intelligent remote-controlled heavy-duty hydraulic cylinder based on the Internet of Things according to claim 5, characterized in that: The diaphragm (7) is a rubber diaphragm that is annularly glued to the inner ring groove cavity, and the rubber diaphragm divides the inner ring groove cavity into an upper cavity (203) and a lower cavity (204).

7. The IoT-based intelligent remote-controlled heavy-duty hydraulic cylinder according to any one of claims 1 to 4, characterized in that: The guide sleeve (2) comprises: a guide sleeve body (201), a channel K (202), a one-way valve 1 (206), a one-way valve 2 (207), and a sealing ring (208). The guide sleeve body (201) is provided with a one-way valve 1 (206) and a one-way valve 2 (207). The one-way valve 1 (206) is connected to the inner ring groove cavity and the rod cavity (11) in one direction. The one-way valve 2 (207) is connected to the rod cavity (11) and the inner ring groove cavity in one direction. The channel K (202) is connected to the atmosphere. The one-way valve 2 (207) is provided with a pre-compression spring.

8. The intelligent remote-controlled heavy-duty hydraulic cylinder based on the Internet of Things according to claim 3, characterized in that: The piston (3) comprises: a piston body (301), an inner gear ring (302), a bidirectional crescent plate (303), and an internal gear (304). Specifically, the piston body (301) serves as a pump body of an internally meshing bidirectional gear motor pump with a built-in pump core. The pump core comprises: an inner gear ring (302), a bidirectional crescent plate (303), and an internal gear (304). The piston body (301) is provided with an oil passage 1 (305) connected to the rodless chamber (10), and the piston body (301) is provided with an oil passage 2 (306) connected to the rod chamber (11).

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