CN219081949U - Right-angle structural digital hydraulic motor speed reducer - Google Patents
Right-angle structural digital hydraulic motor speed reducer Download PDFInfo
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- CN219081949U CN219081949U CN202222363780.9U CN202222363780U CN219081949U CN 219081949 U CN219081949 U CN 219081949U CN 202222363780 U CN202222363780 U CN 202222363780U CN 219081949 U CN219081949 U CN 219081949U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model discloses a right-angle structural digital hydraulic motor speed reducer. The hydraulic power element drives the mechanical feedback type digital servo hydraulic motor to rotate; the mechanical feedback type digital servo hydraulic motor drives the rotating mechanism to rotate through the speed reducer. The rotating system and the mechanical equipment both adopt the digital hydraulic control system, and the mechanical feedback type digital servo hydraulic motor is arranged, so that the high-precision rotating speed and rotating angle control performance are ensured, and the accurate positioning and speed control of the mechanical rotating mechanism can be realized. The right-angle structural digital hydraulic motor speed reducer has the advantages of simple structure and accurate control, and omits a rotary main control valve, a safety valve, an oil supplementing valve and an anti-swing damping valve of a traditional hydraulic system.
Description
Technical Field
The utility model relates to the technical field of digital hydraulic control, in particular to a right-angle structural digital hydraulic motor speed reducer.
Background
The rotary motion is that the object performs circular motion around a certain point or shaft, and the rotary mechanism is that the rotary part of the machine performs rotary motion so as to realize various functions of the machine and meet the working condition requirements. The rotary mechanism is widely applied to various fields such as engineering machinery, agricultural machinery, mining machinery, special vehicles and the like.
The driving mode of the rotation mechanism generally includes mechanical driving, electric driving, hydraulic driving, and the like. The hydraulic driving is gradually developed into a main driving mode of the rotating mechanism, and the traditional hydraulic driving system of the rotating mechanism in the prior art has the problems of low control precision, complex control, high failure rate, high maintenance cost and the like.
Based on the above, in order to solve the problems of low control precision, complex control, high cost and the like of the rotating mechanism of the traditional hydraulic motor speed reducer, the rotating mechanism taking the digital hydraulic motor as a general basic element is gradually applied, and the serial (vertical) digital hydraulic motor speed reducer is gradually applied (see fig. 1 in detail), so that the problems of low control precision, high failure rate and the like of the rotating mechanism are effectively solved.
However, the conventional tandem (vertical) digital hydraulic motor reducers are all arranged in tandem, and require a relatively high installation space when specific product applications are performed, and are difficult to use and install especially in places with insufficient height.
Disclosure of Invention
The present utility model is directed to the above-mentioned problems, and an object of the present utility model is to provide a right angle digital hydraulic motor reducer (see fig. 1, 2, and 3 in detail), which solves the technical problems of low control accuracy, high failure rate, and high maintenance cost in the prior art, and simultaneously reduces system components, so that the system components can be more conveniently installed in places with insufficient height space.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the embodiment of the utility model discloses a right-angle structural digital hydraulic motor speed reducer which is characterized by comprising a hydraulic power element, a right-angle speed changer, a mechanical feedback type digital servo hydraulic motor and a rotating mechanism, wherein,
the hydraulic power element drives the mechanical feedback type digital servo hydraulic motor to rotate;
the mechanical feedback type digital servo hydraulic motor controls the digital valve to act through a control signal, and simultaneously controls the slide valve opening of the digital valve through feedback of a mechanical feedback mechanism connected with the right-angle speed changer, so that the hydraulic motor is driven and controlled to rotate and the motor speed reducer is driven to rotate, and the slewing mechanism is driven to rotate through meshing of a pinion of the motor speed reducer and a slewing bearing large gear ring.
Further, the mechanical feedback type digital servo hydraulic motor comprises a digital servo valve, a mechanical feedback mechanism, a right angle speed changer and a hydraulic motor, wherein the rotating speed of the hydraulic motor is changed into a horizontal rotating direction through the mechanical feedback mechanism and the right angle speed changer, and a feedback signal is provided for the digital servo valve.
The system of the digital hydraulic motor works on the principle that hydraulic oil of a hydraulic source flows to an actuator (such as a rotary motor) through a digital valve to act on a load. Meanwhile, the digital servo valve is controlled by a low-power control motor (a stepping motor or a servo motor) and a position feedback signal of an actuator (see fig. 2 for details).
The beneficial effects of the utility model are as follows:
the utility model optimizes a right-angle structural digital hydraulic motor speed reducer, provides a novel digital hydraulic motor structure and an installation mode, fully utilizes machine space and expands the application range of the digital hydraulic motor compared with a serial (vertical) digital hydraulic motor. Where the arrangement of the whole machine is limited and a vertical (or serial) structure digital hydraulic motor cannot be used, a right-angle structure digital hydraulic motor is installed. Compared with a serial (vertical) digital hydraulic motor speed reducer assembly, the right-angle structural digital hydraulic motor speed reducer assembly can save the installation space and is beneficial to the layout design of the whole machine. In particular in small spaces and in highly limited machines.
Compared with the traditional hydraulic motor reducer assembly, the right-angle structural digital hydraulic motor reducer integrates the digital servo valve, the feedback mechanism, the motor and the reducer into a whole, so that the hydraulic motor reducer has the advantages of simple structure and accurate control, and can omit a rotary main control valve 19, a safety valve 21, an oil supplementing valve 20 and an anti-swing damping valve 22 of a hydraulic system. As shown in fig. 4, 5 and 6.
The utility model can precisely control the precision and the rotation range of the rotation speed of the digital hydraulic motor by applying the digital hydraulic motor, especially for large-flow products exceeding 300L/min.
For example, after the revolving digital technology is carried out on the crawler crane, the crane is revolved and reformed with high precision and high stability by using a digital hydraulic motor, and finally the revolving performance of the crane is greatly improved (the control diagram of the working principle of the system is shown in figure 2, and the logic relation diagram of the system application structure is shown in figure 3).
The mechanical feedback type digital servo hydraulic motor further comprises a controller 9, and the controller 9 is connected with and controls the digital servo valve. The whole machine controller is communicated with the photoelectric handle, and the obtained information is converted into a motor control signal (the rotating speed and the rotating angle which are required to be achieved by control are converted into frequency and are sent to the motor controller), and the motor controller controls the rotating speed and the rotating direction of the motor. The motor is connected with the instruction to drive the valve core of the digital servo valve 6 to change direction, hydraulic oil from the pump is supplied to the hydraulic rotary motor through the digital servo valve 6 so as to drive the hydraulic motor to rotate, and the hydraulic motor speed reducer drives the rotary mechanism. Meanwhile, the rotary motor drives the corresponding mechanical feedback mechanism to control the digital servo valve port to carry out corresponding adjustment and change. Specifically, in the utility model, the rotary motor of the rotary mechanism feeds back the rotation state (rotation speed and rotation angle) to the digital servo valve through the right angle speed changer and the mechanical feedback mechanism connected with the right angle speed changer. And adjusting the opening of the valve port of the digital servo valve.
The rotating speed of the motor and the rotating speed of the hydraulic motor are determined by the mechanical feedback mechanism, the rotating angle of the motor and the rotating angle of the hydraulic motor are determined by the mechanical feedback mechanism, the direction, the rotating angle and the rotating speed of the mechanical feedback type digital servo hydraulic motor are controlled, and finally the rotating speed and the rotating angle of the rotating mechanism 2 are accurately controlled and adjusted.
The digital motor test and application effect of the crawler crane prove that:
1. the minimum stable rotation speed is reduced from 0.2 DEG/S to 0.05 DEG/S;
2. the swing starting response time is reduced from 1.0S to 0.5S;
3. from no position location to accurate position location which can reach +/-0.2 degrees;
4. the hook stabilizing effect that the swing distance of the lifting hook is within 0.7 meter under the condition of full arm extension can be realized from the non-automatic hook stabilizing function.
The utility model has the application range and can be used for machines needing to accurately control the rotation of an upper structure, such as products of cranes, overhead working vehicles, rotary drilling rigs, excavators and the like. Taking a rotary drilling rig as an example, a schematic diagram of a traditional serial (vertical) type and right-angle structural digital hydraulic motor is applied (see fig. 1 for details).
Drawings
FIG. 1 is a schematic diagram of a structural application of a conventional tandem (vertical) and right angle structural digital hydraulic motor;
FIG. 2 is a schematic diagram of the system operation of the digital hydraulic motor;
FIG. 3 is a diagram of the application structure logic of the digital hydraulic motor;
FIG. 4 is a conventional power transmission route map and a power transmission route map using a digital hydraulic motor;
FIG. 5 is a schematic diagram of the hydraulic principle of an implementation of a right angle structural digital hydraulic motor;
fig. 6 is a schematic diagram of the general hydraulic principle of a conventional hydraulic motor reducer.
The hydraulic control system comprises a rotary support 1, a rotary speed reducer 2, a rotary motor 3, a direct-connection speed changer 4 (with mechanical feedback), a coupler 5, a digital servo valve 6, a coupler 7, a stepping motor 8 (or a servo motor), a controller 9, a right-angle speed changer 10 (with mechanical feedback), a main system overflow valve 11, a one-way valve 12, a rotary brake 13, a rotary brake pilot valve 14, an engine 15, a main oil pump 16, a pilot pump 17, a pilot overflow valve 18, a multi-way valve 19, a rotary motor oil supplementing valve 20, a rotary safety valve 21 and a rotary damping valve 22.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The utility model discloses a digital hydraulic control system of a rotating mechanism, wherein a control diagram of the working principle of the system is shown in fig. 2, a logic relation diagram of the system application structure is shown in fig. 3, a schematic diagram of the system structure application is shown in fig. 1, a power transmission route diagram is shown in fig. 4 (b), and a system principle is shown in fig. 5.
The power transmission route of the transmission hydraulic system is shown in fig. 4 (a), the diesel engine drives the hydraulic pump to output pressure oil, high-pressure oil enters the rotary motor through the multi-way valve, and then the rotary motor drives the speed reducer to drive the upper structural member to rotate on the rotary support.
The power transmission route of the hydraulic system using the digital hydraulic motor is shown in fig. 4 (b), the diesel engine drives the hydraulic pump to output pressure oil, and the high-pressure oil directly drives the upper structural member to rotate on the slewing bearing through the digital hydraulic motor mechanism.
As shown in fig. 5, the embodiment of the present utility model discloses a right angle structural digital hydraulic motor reducer, which comprises a main oil pump 16, a mechanical feedback type digital servo hydraulic motor (including a rotary motor 3, a right angle transmission (with mechanical feedback) 10, a digital servo valve 6, a stepping motor (or a servo motor) 8), a rotary reducer 2 and a rotary support 1, wherein the main oil pump 16 drives the mechanical feedback type digital servo hydraulic motor to rotate; the mechanical feedback type digital servo hydraulic motor drives the boarding structural member to rotate through the rotary speed reducer 2 and the rotary support 1, and preferably, other hydraulic accessories are used for ensuring the normal work of the digital hydraulic system.
In the embodiment, the main oil pump 16 is used for providing pressure oil, the mechanical feedback type digital servo hydraulic motor is driven to rotate, and the upper structural member is driven to rotate through the rotary speed reducer 2 and the slewing bearing 1, so that the mechanical feedback type digital servo hydraulic motor has high-precision rotating speed and rotating angle control performance, and the precise positioning and speed control of the rotary speed reducer 2 can be realized; meanwhile, the mechanical feedback type digital servo hydraulic motor has good low-speed performance, and can realize the micro-rotation angle control of the rotary speed reducer 2; the mechanical feedback type digital servo hydraulic motor has the characteristics of uniform starting acceleration and uniform braking deceleration, can prevent system impact and ensures the starting and braking stability. Compared with the traditional slewing mechanism, the mechanical feedback type digital servo hydraulic motor is adopted, so that the problems of large starting braking impact load, poor micro-motion performance and the like caused by large moment of inertia and large inertia in the operation of the slewing speed reducer 2 are solved, and the accurate positioning and speed control of the slewing speed reducer 2 are realized. Meanwhile, the internal design of the rotary motor is optimized, the designs of a rotary safety valve, an anti-swing damping valve and the like are omitted, and the cost is lower (see fig. 4, 5 and 6 for details).
On the basis of the above embodiments, as shown in fig. 5, the mechanical feedback type digital servo hydraulic motor includes a rotary motor 3, a right angle transmission (with mechanical feedback) 10, a digital servo valve 6, a stepping motor (or servo motor) 8, and integrates the digital servo valve, the mechanical feedback mechanism, the hydraulic motor and the like as a whole, wherein the digital servo valve is connected with and drives the hydraulic motor to rotate, and the mechanical feedback mechanism feedback adjusts the digital servo valve according to the working condition of the hydraulic motor.
The right angle transmission can convert the vertical rotation direction into the horizontal rotation direction, and transmit the rotation speed and the rotation angle of the hydraulic motor to the mechanical feedback mechanism to provide feedback signals for the digital servo valve. The right angle transmission may be a deceleration or acceleration control, the specific deceleration or acceleration ratio depending on the angular resolution required of the actuator.
Specifically, the vertical rotation direction is converted into the horizontal rotation direction through a right angle speed changer, and a mechanical feedback mechanism is connected to provide a feedback signal for the digital servo valve.
Specifically, the speed-increasing control of the right-angle speed changer controls the opening degree of the digital servo valve through the mechanical feedback mechanism so as to control the flow of the motor, so that the angle accurate control at the ultra-low speed can be realized, and the angle resolution can be realized by 1 degree.
Specifically, the valve port size of the digital servo valve is adjusted by feeding back the working condition of the hydraulic motor through a mechanical feedback mechanism, so that feedback adjustment is realized.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model; modifications and equivalent substitutions are intended to be included in the scope of the claims without departing from the spirit and scope of the present utility model.
Claims (9)
1. A right-angle structural digital hydraulic motor speed reducer is characterized by comprising a hydraulic power element, a mechanical feedback type digital servo hydraulic motor, a right-angle speed changer and a mechanical feedback mechanism, a rotating mechanism,
the hydraulic power element drives the mechanical feedback type digital servo hydraulic motor to rotate;
and a pinion at the output end of the mechanical feedback type digital servo hydraulic motor is meshed with the slewing bearing large gear ring to drive the rotating mechanism to rotate.
2. The right angle structural digital hydraulic motor reducer of claim 1, wherein the mechanical feedback type digital servo hydraulic motor comprises a digital servo valve, a mechanical feedback mechanism, a right angle speed changer and a hydraulic motor, wherein the digital servo valve is connected with and drives the hydraulic motor to rotate, and the mechanical feedback mechanism feeds back and adjusts the digital servo valve according to the working condition of an executing mechanism.
3. The right angle structural digital hydraulic motor reducer of claim 2, wherein the right angle transmission can convert vertical rotation direction movement into horizontal rotation direction movement, and transmit the rotation speed and angle of the hydraulic motor to the mechanical feedback mechanism, so as to provide feedback signals for the digital servo valve, and the right angle transmission can be a right angle transmission in the form of speed reduction or speed increase, and the specific speed reduction ratio or speed increase ratio depends on the required angular resolution of the actuator.
4. The right angle structural digital hydraulic motor reducer according to claim 3, wherein the right angle speed variator speed increasing control controls the opening of a digital valve through a mechanical feedback mechanism so as to control the motor flow, so that the angle precise control at the ultra-low speed can be realized, and the angle resolution of 1 degree can be realized.
5. The right angle structural digital hydraulic motor reducer of claim 2, wherein the mechanical feedback mechanism to which the right angle transmission is coupled and the rotational speed of the motor of the digital servo valve determine the rotational speed of the hydraulic motor.
6. The right angle structural digital hydraulic motor reducer of claim 2, wherein the mechanical feedback mechanism to which the right angle transmission is coupled and the angle of rotation of the motor of the digital servo valve determine the angle of rotation of the hydraulic motor.
7. The right angle structural digital hydraulic motor reducer of claim 2, wherein the mechanical feedback mechanism to which the right angle transmission is coupled comprises direct feedback or indirect feedback based on the actuator output shaft.
8. The right angle structural digital hydraulic motor reducer of claim 1, wherein the mechanical feedback mechanism to which the right angle transmission is coupled comprises one or more of a gear mesh, a rack and pinion, a chain, and a timing belt.
9. The right angle construction type digital hydraulic motor reducer according to claim 1, wherein a rotating mechanism is added, and the rotating mechanism is controlled by digital hydraulic pressure and can be applied to machinery requiring rotary motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222363780.9U CN219081949U (en) | 2022-09-06 | 2022-09-06 | Right-angle structural digital hydraulic motor speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222363780.9U CN219081949U (en) | 2022-09-06 | 2022-09-06 | Right-angle structural digital hydraulic motor speed reducer |
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| Publication Number | Publication Date |
|---|---|
| CN219081949U true CN219081949U (en) | 2023-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222363780.9U Active CN219081949U (en) | 2022-09-06 | 2022-09-06 | Right-angle structural digital hydraulic motor speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219081949U (en) |
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2022
- 2022-09-06 CN CN202222363780.9U patent/CN219081949U/en active Active
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