CN112228415A - Control device of hydraulic motor - Google Patents
Control device of hydraulic motor Download PDFInfo
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- CN112228415A CN112228415A CN202011133535.8A CN202011133535A CN112228415A CN 112228415 A CN112228415 A CN 112228415A CN 202011133535 A CN202011133535 A CN 202011133535A CN 112228415 A CN112228415 A CN 112228415A
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- hydraulic motor
- valve
- piston
- rod
- control device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
- F16K31/602—Pivoting levers, e.g. single-sided
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention belongs to the technical field of mechanical equipment, and provides a control device of a hydraulic motor, which comprises the hydraulic motor, wherein the hydraulic motor is connected with a manual speed regulation device, the manual speed regulation device is connected with a valve control device, and the valve control device is connected with an oil inlet of the hydraulic motor; the manual speed regulating device can also be connected with an automatic regulating device; the control system of the hydraulic motor realizes the control of the output speed of the hydraulic motor by a pure mechanical structure, and has the advantages of simple structure and low production cost; the hydraulic motor speed regulation device does not depend on a circuit to work, the probability of faults is low, the automatic speed regulation device is matched with the manual speed regulation device, when one device has a problem, the other device is started to work, the hydraulic motor cannot normally regulate the speed, and the working efficiency cannot be influenced; the speed regulating device with a mechanical structure has the advantages of simple fault removal, convenience in maintenance and the like.
Description
Technical Field
The invention relates to the technical field of mechanical equipment, in particular to a control device of a hydraulic motor.
Background
The hydraulic motor is an actuating element of a hydraulic system, and converts hydraulic pressure energy provided by a hydraulic pump into mechanical energy (torque and rotating speed) of an output shaft of the hydraulic motor, and the liquid is a medium for transmitting force and motion; hydraulic motors, also known as oil motors, are widely used in various industries such as injection molding machines, ships, lifting machines, engineering machines, construction machines, coal mine machines, mining machines, metallurgical machines, ship machines, petrochemical machines, port machines, and the like; however, in the prior art, the speed of the hydraulic motor is generally regulated by adopting an electromagnetic valve or other electric valves, the electromagnetic valve or other electric valves are too dependent on electric power, and when the electric power has problems, the hydraulic motor cannot normally regulate the speed, so that the invention aims to provide a device which has a simple structure and controls the hydraulic motor by depending on a mechanical structure; the inventor searches the invention as detailed and comprehensive as possible to obtain the following prior art, and simply introduces the prior art and makes a relevant comparison with the technical scheme of the invention so as to better understand the inventive concept of the invention and show the technical advantages and the technical characteristics of the invention.
Prior art 1: CN201310656169.8, which provides a hydraulic motor angular velocity servo system, which is composed of an angular velocity command signal generator, a servo controller, a servo amplifier, a servo object, an angular velocity measurement sensor and a hydraulic source; the invention provides a fast and stable hydraulic motor angular speed servo system, which fully considers the limit output capacity of a servo amplifier in a linear range and embodies in control parameters, so that the response capacity of the system is maximally embodied, and the response speed is greatly improved; however, the angular velocity command signal generator, the servo controller, the servo amplifier, the angular velocity measuring sensor and other components in the invention all depend on the circuit to work, and the circuit is excessively dependent, so that the hydraulic motor cannot normally regulate the speed when the circuit has problems, and the working efficiency is influenced;
prior art 2: CN201910493396.0, which provides a control method and a control system for the harvesting speed of a green soy bean harvester, in particular to a harvesting device of a green soy bean harvester, comprising a rolling brush hydraulic motor, a conveying belt hydraulic motor, a fan hydraulic motor, which are respectively provided with a rotation speed sensor; the rolling brush motor, the conveyer belt motor and the fan motor rotate according to the initial set rotating speed to enter a harvesting state, and meanwhile, the rotating speed of each hydraulic motor is read by using a rotating speed sensor. The travel operating handle is pushed, a hydraulic travel motor of the green soybean harvester starts to rotate, and the travel speed is controlled by the handle. Reading the rotating speed of the walking hydraulic motor through a rotating speed sensor arranged on the walking hydraulic motor, and calculating the walking speed; the rotating speed of the rolling brush motor, the conveying belt motor, a fan motor and other harvesting devices is controlled according to the walking speed. When the running speed becomes fast, the rotating speed of the harvesting device is increased, and when the running speed is reduced, the rotating speed of the harvesting device is reduced. And the set rotating speed is matched with the actual rotating speed read by the speed sensor by utilizing a PID algorithm, so that accurate control is achieved. Thereby automatically adjusting the speed of the harvesting device according to the running speed and improving the harvesting efficiency; the invention has the beneficial effects that: the rotating speed of each motor of the harvesting device is judged by acquiring the running speed, so that the harvesting efficiency is matched with the running speed, and a better harvesting effect is achieved; the speed regulation of each motor is realized by a speed sensor, the speed sensor is an electric device, the electric device works by electric power, the electric power is excessively dependent, and when a circuit has a problem, the hydraulic motor cannot normally regulate the speed, so that the working efficiency is influenced.
Prior art 3: CN201220564467.5, providing a valve group for series-parallel switching of multiple fixed displacement hydraulic motors, which can realize the change in speed and torque of fixed displacement motors to meet different working condition requirements; a valve group for series-parallel switching of a plurality of quantitative hydraulic motors comprises a hydraulic manifold block, quantitative hydraulic motors and an oil tank; the hydraulic manifold block comprises an electro-hydraulic reversing valve; the first oil port of the hydraulic manifold block is connected with the first oil ports of the first quantitative hydraulic motor and the second quantitative hydraulic motor which are connected in parallel; second oil ports of the first quantitative hydraulic motor and the second quantitative hydraulic motor are connected with a T port of the electro-hydraulic reversing valve; the port B of the electro-hydraulic reversing valve is connected with the first oil ports of the third quantitative hydraulic motor and the fourth quantitative hydraulic motor which are connected in parallel, the port P of the electro-hydraulic reversing valve is connected with the first oil port of the hydraulic manifold block, and the port A of the electro-hydraulic reversing valve is connected with the second oil port of the hydraulic manifold block; second oil ports of the third quantitative hydraulic motor and the fourth quantitative hydraulic motor are connected with a second oil port of the hydraulic manifold block; the scheme solves the problem of series-parallel switching of a plurality of quantitative hydraulic motors, realizes the change of the speed and the torque of the quantitative motors to meet different working condition requirements, and is more economical compared with a variable hydraulic motor; in the scheme, the hydraulic manifold block also comprises a shuttle valve; the left air inlet and the right air inlet of the shuttle valve are respectively connected with the first oil port and the second oil port of the hydraulic manifold block, and the air outlet of the shuttle valve is connected with the piston of the electro-hydraulic reversing valve; the source of pilot oil externally controlled by the electro-hydraulic reversing valve is successfully solved by using the threaded cartridge shuttle valve in the valve bank, and a device for generating the pilot oil by an external pilot oil pipeline is avoided; the valves that the series-parallel connection switched in this scheme also rely on the circuit to work, excessively rely on the circuit, can lead to hydraulic motor unable normal speed governing when the circuit goes wrong, influence work efficiency.
From the above description of the prior art, those skilled in the art can appreciate the following disadvantages of the control device of the hydraulic motor currently available:
(1) the structure is complex, and the production cost is high;
(2) the hydraulic motor works by depending on a circuit, when the circuit has a problem, the hydraulic motor cannot normally regulate the speed, and the working efficiency is influenced;
(3) when the circuit has problems, the time for eliminating the problems is long, and the maintenance is inconvenient;
therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The invention provides a control device of a hydraulic motor, which comprises the hydraulic motor, wherein the hydraulic motor is connected with a manual speed regulating device, the manual speed regulating device is connected with a valve control device, and the valve control device is connected with an oil inlet of the hydraulic motor.
The manual speed regulating device is also connected with an oil supplementing device.
The manual speed regulating device comprises a shell, an operating handle is arranged in the shell and connected with a crank arm, one end of the crank arm is connected with a pressure regulating device, and the other end of the crank arm is connected with a valve control device through a piston device.
The valve control device comprises a valve rod, the valve rod is connected with a valve, and the valve is connected with an oil inlet of the hydraulic motor.
The piston device comprises a first piston rod connected with one end of the crank arm through a fourth pivot, and the first piston rod is connected with a first piston through a pivot; the first piston is arranged in the first piston cylinder, and the first piston is connected with the valve rod.
The pressure adjusting device comprises a cam, the cam is arranged on the outer side of the crank arm, the cam is in contact with a roller, the roller is pivoted with a connecting arm at a fifth pivot, the roller is connected with one end of a connecting rod, a sleeve is further fixed on the connecting rod, a first connecting rod matched with the sleeve is arranged in the sleeve, a first support is arranged on the connecting rod, a second support is fixed at the lower end of the first connecting rod, and the lower end of the first connecting rod is pivoted with the shell through a third pivot; springs are arranged on the outer sides of the connecting rod, the sleeve and the first connecting rod, and two ends of each spring are fixed on the first support and the second support respectively; the other end of the crank arm is connected with the first piston rod through a fourth pivot.
The crank arm comprises a large arc-shaped mounting part and a small arc-shaped mounting part, a cam is arranged on the outer side of the large arc-shaped mounting part, and the small arc-shaped mounting part is connected with the first piston rod through a fourth pivot.
One end of the first piston cylinder is connected with an oil supplementing device, the oil supplementing device comprises an auxiliary storage, a channel is arranged between the auxiliary storage and the first piston cylinder, a second valve is arranged on the channel and connected with a first valve rod, a valve rod spring is arranged on the first valve rod, the other end of the first valve rod is connected with a movable buckle, the movable buckle is pivoted with one end of a shell support, and the other end of the shell support is fixed on the shell; the movable buckle is in contact with the movable arm, the movable arm is pivoted on the pivot IV, and one end of the auxiliary storage is connected with an oil supplementing port.
The manual speed regulating device is connected with the automatic speed regulating device through a pipeline.
The automatic speed regulating device comprises a connecting shaft, the connecting shaft is connected with a first gear, the first gear is meshed with a second gear, a speed limiter is pivoted on the second gear and connected with a seat ring, a connecting disc is arranged on the seat ring, a compression spring is arranged above the connecting disc and arranged on the outer side of a valve rod, the valve rod penetrates through a lantern ring, and the lantern ring is fixed in the middle of the second gear; one end of the valve rod is connected with a piston, the piston is arranged in a piston cylinder, and part of the compression spring is arranged in the piston cylinder.
The pressure adjusting device comprises a connecting rod, the connecting rod is connected with one end of a crank arm through a pivot II, a sleeve is fixed on the connecting rod, a first connecting rod matched with the sleeve is arranged in the sleeve, a first support is arranged on the connecting rod, a second support is fixed at the lower end of the first connecting rod, and the lower end of the first connecting rod is pivoted with the shell through a pivot III; springs are arranged on the outer sides of the connecting rod, the sleeve and the first connecting rod; the lower end of the first connecting rod is pivoted through a third pivot shell; the other end of the crank arm is connected with a first piston rod through a fourth pivot, and the first piston rod is connected with a first piston through a pivot; the first piston is arranged in a first piston cylinder, and the first piston cylinder is connected with the first piston through a pipeline.
The crank arm includes first connecting portion and second installation department, the one end of first connecting portion is passed through pivot four and is connected with piston rod one, the second installation department is connected with the connecting rod through pivot two, operating handle sets up between first installation department and second installation department, and operating handle's one end extends the shell.
One end of the first piston cylinder is connected with an oil supplementing device, the oil supplementing device comprises an auxiliary storage, a channel is arranged between the auxiliary storage and the first piston cylinder, a second valve is arranged on the channel and connected with a first valve rod, a valve rod spring is arranged on the first valve rod, one end of the first valve rod is connected with a movable buckle, the movable buckle is in contact with a movable arm, and the movable arm is pivoted on a fourth pivot shaft; and one end of the auxiliary storage is connected with an oil supplementing port.
In summary, the control system for the hydraulic motor according to the present invention, which realizes the control of the output speed of the hydraulic motor by using a pure mechanical structure, has the following advantages:
(1) the structure is simple, and the production cost is low;
(2) the hydraulic motor speed regulation device does not depend on a circuit to work, the probability of faults is low, the automatic speed regulation device is matched with the manual speed regulation device, when one device has a problem, the other device is started to work, the hydraulic motor cannot normally regulate the speed, and the working efficiency cannot be influenced;
(3) the speed regulating device with a mechanical structure is simple in fault removal and convenient to maintain;
drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of embodiment 2 of the present invention;
FIG. 3 is a schematic structural view of embodiment 3 of the present invention;
FIG. 4 is a schematic structural view of embodiment 4 of the present invention;
FIG. 5 is a simple schematic diagram of position one of embodiment 4 of the present invention;
FIG. 6 is a schematic diagram of a simple structure of position two in embodiment 4 of the present invention;
FIG. 7 is a schematic structural view of a crank arm according to embodiments 1 to 3 of the present invention;
FIG. 8 is a schematic view of the structure of a crank arm in embodiment 4 of the present invention;
reference numerals:
1. hydraulic motor 2, oil inlet 3, connecting shaft 4, gear I5, gear II
6. Speed limiter 7, seat ring 8, connecting disc 9, compression spring 10 and valve rod
11. Lantern ring 12, piston 13, piston cylinder 14, business turn over oil device
15. Pipe 16, shell 17, operating handle 18 and pivot I
19. Crank arm 20, pivot shaft two 21, connecting rod 22 and sleeve
23. Connecting rod I24, support I25, support II 26 and pivot III
27. Spring 28, pivot four 29, piston rod one 30 and hinge
31. A first piston 32, a first piston cylinder 33, a first mounting part 34 and a second mounting part
35. Auxiliary reservoir 36, channel 37, valve two 38, valve stem one
39. Valve rod spring 40, movable buckle 41, movable arm 42 and oil supplementing port
43. Cam 44, roller 45, connecting arm 46, pivot five
47. A large arc-shaped mounting part 48, a small arc-shaped mounting part 49 and a shell bracket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the installation methods, the communication protocols and the technical terms mentioned in the present invention are technical terms that are already clearly known in the technical field, and therefore, the explanation thereof is not repeated. Moreover, the same reference numerals are used for the same components, which do not affect and should not constitute an exact understanding of the technical solutions for a person skilled in the art.
Example 1:
the invention provides a control device of a hydraulic motor, which comprises a hydraulic motor 1, wherein the hydraulic motor 1 is connected with a manual speed regulating device, the manual speed regulating device is connected with a valve control device, and the valve control device is connected with an oil inlet 2 of the hydraulic motor 1; the automatic speed regulating device is used for manually controlling the valve control device to regulate the size of an oil inlet 2 of the hydraulic motor 1 and regulating the oil inlet amount entering the hydraulic motor 1, so that the output speed of the hydraulic motor 1 is regulated.
Specifically, the manual speed adjusting device comprises a shell 16, an operating handle 17 is arranged in the shell 16, the operating handle 17 is pivoted with the shell 16 through a first pivot 18, the operating handle 17 can rotate around the first pivot 18, a crank arm 19 is further connected to the operating handle 17, and preferably, the crank arm 19 and the operating handle 17 are integrally formed; one end of the crank arm is connected with the pressure adjusting device, and the other end of the crank arm is connected with the valve control device through the piston device; the pressure adjusting device is used for controlling the force of the piston device pushing and pulling the valve control device, so that the oil inlet of the hydraulic motor is adjusted, and the output speed of the hydraulic motor is adjusted.
Specifically, the valve control device comprises a valve rod 10, the valve rod is connected with a valve (not shown in the figures, but it is obvious to those skilled in the art that any valve meeting the valve requirements can be applied to the present invention), the valve is connected with an oil inlet 2 of a hydraulic motor 1, and the valve rod 10 drives the valve to move up and down, so as to control the size of the oil inlet 2 and perform corresponding speed regulation; more specifically, the piston device comprises a first piston rod 29 connected with one end of the crank arm 19 through a fourth pivot 28, and a first piston 31 connected with the first piston rod 29 through a hinge 30; the first piston 31 is arranged in a first piston cylinder 32, and the first piston 31 is connected with the valve rod 10; the upper part and the lower part of the piston I31 are controlled by the matching of the operating handle 17 and the pressure adjusting device to drive the valve rod 10 to move up and down, so that the size of an oil inlet of the hydraulic motor is controlled, and the corresponding speed regulation is carried out on the hydraulic motor.
Specifically, the pressure adjusting device comprises a cam 43, the cam 43 is arranged on the outer side of the crank arm 19, the cam is in contact with a roller 44, the roller is pivoted with a connecting arm 45 at a pivot five 46, the roller is connected with one end of the connecting rod 31, a sleeve 22 is further fixed on the connecting rod 21, a first connecting rod 23 matched with the sleeve 22 is arranged in the sleeve 22, a first bracket 24 is arranged on the connecting rod 21, a second bracket 25 is fixed at the lower end of the first connecting rod 23, and the lower end of the first connecting rod 23 is pivoted with the shell 16 through a third pivot 26; springs 27 are arranged on the outer sides of the connecting rod 21, the sleeve 22 and the first connecting rod 23, and two ends of each spring 27 are respectively fixed on the first support 24 and the second support 25; the other end of the crank arm 19 is connected to a first piston rod 29 by a fourth pivot 28.
The crank arm 19 comprises a large arc-shaped mounting part 47 and a small arc-shaped mounting part 48, a cam 43 is arranged on the outer side of the large arc-shaped mounting part 47, and the small arc-shaped mounting part 48 is connected with the first piston rod 29 through a fourth pivot 28.
Example 2:
the difference between the present embodiment and embodiment 1 is that the present embodiment further includes an oil supplementing device, and the oil supplementing device is connected to the manual speed adjusting device to supplement oil to the manual speed adjusting device.
Specifically, one end of the piston cylinder I32 is connected with an oil supplementing device, so that oil in the piston cylinder I32 can be supplemented while the speed of the hydraulic motor 1 is controlled, and the piston cylinder I32 is not required to be supplemented independently, so that convenience is brought; specifically, the oil supplementing device comprises an auxiliary storage 35, a channel 36 is arranged between the auxiliary storage 35 and the piston cylinder I32, a second valve 37 is arranged on the channel 36, the second valve 37 is connected with a first valve rod 38, and the first valve rod 38 drives the second valve 37 to move, so that the channel 36 is opened or closed, and oil is supplemented; a valve rod spring 39 is arranged on the valve rod I38, a movable buckle 40 is connected to the other end of the valve rod I38, the movable buckle 40 is in contact with a movable arm 41, the movable arm 41 is pivoted on the pivot IV 28, and an oil supplementing port 42 is connected to one end of the auxiliary storage 35; when the oil supplementing opening 42 is opened, the operating handle 17 is pushed to rotate anticlockwise, and the sleeve 22 moves to the limit position, the movable arm 41 drives the movable buckle 40 to move upwards, the first valve rod 38 is driven to move upwards, the second valve 37 is opened, oil enters the first piston cylinder 32 through the channel 36, and the oil in the first piston cylinder 32 is supplemented; the spring 27 and the valve rod spring 39 make the valve rod one 38 move downwards, the channel 36 is closed, and oil supplement is stopped.
Example 3:
the difference between this embodiment and embodiment 2 of embodiment 1 is that this embodiment further includes an automatic speed adjusting device, and the manual speed adjusting device is connected with the automatic speed adjusting device through a pipeline 15.
Specifically, the automatic speed regulating device comprises a connecting shaft 3, the connecting shaft 3 is connected with the output end of the hydraulic motor 1 through structures such as a coupler, the connecting shaft 3 is connected with a first gear 4, the first gear 4 is meshed with a second gear 5, a speed limiter 6 is pivoted on the second gear 5, the speed limiter 6 is connected with a seat ring 7, a connecting disc 8 is arranged on the seat ring 7, a compression spring 9 is arranged above the connecting disc 8, the compression spring 9 is arranged on the outer side of a valve rod 10, the valve rod 10 penetrates through a lantern ring 11, and the lantern ring 11 is fixed in the middle of the second gear 5; the lantern ring 11 does not move up and down, and the valve rod 10 can do up-and-down reciprocating linear motion along the lantern ring 11; one end of the valve rod 11 is connected with a piston 12, the piston 12 is arranged in a piston cylinder 13, the partial compression spring 9 is arranged in the piston cylinder 13, an oil inlet and outlet device 14 is arranged at the top of the piston cylinder 13, oil in the piston cylinder 13 flows into the oil inlet and outlet device 14 when the piston 12 is moved upwards by the oil inlet and outlet device 14, and when the piston 12 moves downwards, the oil in the oil inlet and outlet device 14 flows into the piston cylinder 13 to push the piston 12 to move downwards, and the valve rod 10 is moved downwards by matching with the compression spring 9; when the speed of the hydraulic motor 1 is increased, the first gear 4 drives the second gear 5 to rotate highly, so that the speed limiter 6 is driven to rotate around a pivot on the second gear 5 to resist the action of the compression spring 9, the valve rod 10 is lifted, the valve rod 10 moves upwards, the oil inlet 2 of the hydraulic motor 1 is reduced, the oil inlet amount of the hydraulic motor 1 is reduced, and the speed is reduced; when the speed of the hydraulic motor 1 is slowed down, the speed limiter 6 stops rotating gradually, the valve rod 10 moves downwards under the action of the compression spring 9 and the piston 12, the oil inlet 2 of the hydraulic motor 1 is enlarged, and therefore the oil inlet amount of the hydraulic motor 1 is increased, and the speed is increased; more specifically, the valve control device comprises a valve rod 10, the valve rod is connected with a valve (not shown in the figures, but it is obvious to those skilled in the art that any valve meeting the valve requirements can be applied to the present invention), the valve is connected with the oil inlet 2 of the hydraulic motor 1, and the valve rod 10 drives the valve to move up and down, so as to control the size of the oil inlet 2 and perform corresponding speed regulation.
Example 4
The present embodiment is different from the above-described embodiments in that the pressure adjusting device and the oil replenishing device in the present embodiment are different from the above-described structures; specifically, the pressure adjusting device comprises a connecting rod 21, the connecting rod 21 is connected with one end of the crank arm 19 through a second pivot 20, a sleeve 22 is fixed on the connecting rod 21, a first connecting rod 23 matched with the sleeve 22 is arranged in the sleeve 22, and a gap is reserved between the top of the first connecting rod 23 and the sleeve 22; a first bracket 24 is arranged on the connecting rod 21, and the first bracket 24 can move on the connecting rod 21; a second bracket 25 is fixed at the lower end of the first connecting rod 23, and the lower end of the first connecting rod 23 is pivoted with the shell 16 through a third pivot 26; springs 27 are arranged on the outer sides of the connecting rod 21, the sleeve 22 and the first connecting rod 23, and two ends of each spring 27 are respectively fixed on the first support 24 and the second support 25; the other end of the crank arm 19 is connected with a first piston rod 29 through a fourth pivot 28, and the first piston rod 29 is connected with a first piston 31 through a pivot 30; the piston I31 is arranged in a piston cylinder I32, and the piston cylinder I32 is connected with the piston 12 through a pipeline 15;
more specifically, the crank arm 18 comprises a first connecting part 33 and a second mounting part 34, one end of the first connecting part 33 is connected with the first piston rod 29 through a fourth pivot 28, the second pressing part 34 is connected with the connecting rod 21 through a second pivot 20, the operating handle 17 is arranged between the first mounting part 33 and the second mounting part 34, and one end of the operating handle 17 extends out of the shell 16; the first and second mounting portions 33 and 34 are preferably elongated; preferably, the first connecting portion 33, the second mounting portion 34, and the operating handle 17 are integrally formed; the operating handle 17 moves clockwise, the first piston rod 29 drives the first piston 31 to move downwards, and oil is extruded into the piston cylinder 13 through the pipeline 15, so that the piston 12 is pushed to move downwards, the valve rod 10 is driven to move downwards, the oil inlet 2 of the hydraulic motor 1 is enlarged, and speed increasing is achieved; on the contrary, the operating handle 17 is pushed to move anticlockwise, so that the speed reduction of the hydraulic motor 1 is realized; the amount of downward force of the first piston 31 is determined by the spring 27.
As a preferable scheme, one end of the piston cylinder I32 is connected with an oil supplementing device, so that oil in the piston cylinder I32 can be supplemented while the speed of the hydraulic motor 1 is controlled, and the oil does not need to be supplemented to the piston cylinder I32 independently, so that the hydraulic motor is very convenient; specifically, the oil supplementing device comprises an auxiliary storage 35, a channel 36 is arranged between the auxiliary storage 35 and the piston cylinder I32, a second valve 37 is arranged on the channel 36, the second valve 37 is connected with a first valve rod 38, and the first valve rod 38 drives the second valve 37 to move, so that the channel 36 is opened or closed, and oil is supplemented; a valve rod spring 39 is arranged on the valve rod I38, a movable buckle 40 is connected to the other end of the valve rod I38, the movable buckle 40 is in contact with a movable arm 41, the movable arm 41 is pivoted on the pivot IV 28, and an oil supplementing port 42 is connected to one end of the auxiliary storage 35; when the oil supplementing opening 42 is opened, the operating handle 17 is pushed to rotate anticlockwise, and the sleeve 22 moves to the limit position, the movable arm 41 drives the movable buckle 40 to move upwards, the first valve rod 38 is driven to move upwards, the second valve 37 is opened, oil enters the first piston cylinder 32 through the channel 36, and the oil in the first piston cylinder 32 is supplemented; the spring 27 and the valve rod spring 39 make the valve rod one 38 move downwards, the channel 36 is closed, and oil supplement is stopped.
The invention can realize the speed regulation of the hydraulic motor by matching the automatic speed regulation device and the manual speed regulation device, and the automatic speed regulation device and the manual speed regulation device of the invention are both mechanical structures, do not relate to the matching use of circuits, and have the following advantages:
(1) the structure is simple, and the production cost is low;
(2) the circuit is not relied on for working, and the failure probability is small;
(3) the speed regulating device with a mechanical structure is simple in fault removal and convenient to maintain;
(4) automatic speed adjusting device and manual speed adjusting device cooperate, when one of them device goes wrong, start another device and carry out work, can not lead to the unable normal speed governing of hydraulic motor, can not influence work efficiency.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.
Claims (9)
1. The control device of the hydraulic motor comprises the hydraulic motor (1) and is characterized in that the hydraulic motor (1) is connected with a manual speed regulating device, the manual speed regulating device is connected with a valve control device, and the valve control device is connected with an oil inlet (2) of the hydraulic motor (1).
2. The control device of a hydraulic motor according to claim 1, wherein an oil supplementing device is further connected to the manual speed adjusting device.
3. A control device for a hydraulic motor according to claim 1 or 2, wherein the manual speed-adjusting device comprises a housing (16), an operating handle (17) is arranged in the housing (16), a crank arm (19) is connected to the operating handle (17), one end of the crank arm (19) is connected to the pressure-adjusting device, and the other end of the crank arm (19) is connected to the valve control device through a piston device.
4. A control arrangement of a hydraulic motor according to claim 3, characterised in that the valve control arrangement comprises a valve rod (10), which valve rod (10) is connected to a valve, which valve is connected to the oil inlet (2) of the hydraulic motor (1).
5. The control device of a hydraulic motor according to claim 4, wherein the piston device comprises a first piston rod (29) connected to one end of the crank arm (19) through a fourth pivot (28), the first piston rod (29) being connected to a first piston (31) through a hinge (30); the first piston (31) is arranged in a first piston cylinder (32), and the first piston (31) is connected with the valve rod (10). (the upper part and the lower part of the valve rod 10 are driven by controlling the upper part and the lower part of the piston I31 to control the size of an oil inlet of the hydraulic motor so as to carry out corresponding speed regulation on the hydraulic motor.)
6. The control device of the hydraulic motor according to claim 5, wherein the pressure adjusting device comprises a cam (43), the cam (43) is arranged on the outer side of the crank arm (19), the cam (43) is in contact with a roller (44), the roller (44) is pivoted with a connecting arm (45) at a pivot five (46), the roller is connected with one end of the connecting rod (21), a sleeve (22) is further fixed on the connecting rod (21), a first connecting rod (23) matched with the sleeve (22) is arranged in the sleeve (22), a first bracket (24) is arranged on the connecting rod (21), a second bracket (25) is fixed at the lower end of the first connecting rod (23), and the lower end of the first connecting rod (23) is pivoted with the shell (16) through a third pivot (26); springs (27) are arranged on the outer sides of the connecting rod (21), the sleeve (22) and the connecting rod I (23), and two ends of each spring (27) are respectively fixed to the support I (24) and the support II (25); the other end of the crank arm (19) is connected with a first piston rod (29) through a fourth pivot (28).
7. The control device of a hydraulic motor according to claim 6, wherein the crank arm (19) includes a large arc-shaped mounting portion (47) and a small arc-shaped mounting portion (48), the cam (43) is provided on the outer side of the large arc-shaped mounting portion (47), and the small arc-shaped mounting portion (48) is connected with the first piston rod (29) through the fourth pivot (28).
8. The control device of the hydraulic motor according to claim 7, wherein one end of the piston cylinder I (32) is connected with an oil supplementing device, the oil supplementing device comprises an auxiliary storage (35), a channel (36) is arranged between the auxiliary storage (35) and the piston cylinder I (32), a second valve (37) is arranged on the channel (36), the second valve (37) is connected with a first valve rod (38), a valve rod spring (39) is arranged on the first valve rod (38), the other end of the first valve rod (38) is connected with a movable buckle (40), the movable buckle (40) is pivoted with one end of a housing bracket (49), and the other end of the housing bracket (49) is fixed on the housing (16); the movable buckle (40) is in contact with the movable arm (41), the movable arm (41) is pivoted on the pivot shaft four (28), and one end of the auxiliary storage (35) is connected with an oil supplementing port (42).
9. A control device for a hydraulic motor according to claim 8, characterised in that the manual speed regulation device is connected to the automatic speed regulation device by means of a conduit (15).
The control device of the hydraulic motor is characterized in that the automatic speed regulating device comprises a connecting shaft (3), the connecting shaft (3) is connected with a first gear (4), the first gear (4) is meshed with a second gear (5), a speed limiter (6) is pivoted on the second gear (5), the speed limiter (6) is connected with a seat ring (7), a connecting disc (8) is arranged on the seat ring (7), a compression spring (9) is arranged above the connecting disc (8), the compression spring (9) is arranged on the outer side of a valve rod (10), the valve rod (10) penetrates through a lantern ring (11), and the lantern ring (11) is fixed in the middle of the second gear (5); one end of the valve rod (10) is connected with a piston (12), the piston (12) is arranged in a piston cylinder (13), and part of the compression spring (9) is arranged in the piston cylinder (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011133535.8A CN112228415A (en) | 2020-10-21 | 2020-10-21 | Control device of hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011133535.8A CN112228415A (en) | 2020-10-21 | 2020-10-21 | Control device of hydraulic motor |
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| Publication Number | Publication Date |
|---|---|
| CN112228415A true CN112228415A (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011133535.8A Withdrawn CN112228415A (en) | 2020-10-21 | 2020-10-21 | Control device of hydraulic motor |
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| Country | Link |
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| CN (1) | CN112228415A (en) |
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Application publication date: 20210115 |