CN112483496A - Hydraulic control slewing gear of static pile press and control method thereof - Google Patents
Hydraulic control slewing gear of static pile press and control method thereof Download PDFInfo
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- CN112483496A CN112483496A CN202011269509.8A CN202011269509A CN112483496A CN 112483496 A CN112483496 A CN 112483496A CN 202011269509 A CN202011269509 A CN 202011269509A CN 112483496 A CN112483496 A CN 112483496A
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- 230000003068 static effect Effects 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000007704 transition Effects 0.000 claims abstract description 43
- 230000009471 action Effects 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 10
- 230000001133 acceleration Effects 0.000 claims abstract description 9
- 230000006835 compression Effects 0.000 claims description 19
- 238000007906 compression Methods 0.000 claims description 19
- 238000013016 damping Methods 0.000 claims description 9
- 230000003139 buffering effect Effects 0.000 description 11
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
- F15B13/01—Locking-valves or other detent i.e. load-holding devices
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/20—Placing by pressure or pulling power
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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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
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D2055/0004—Parts or details of disc brakes
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a hydraulic control slewing gear of a static pile press and a control method thereof, which are characterized in that: the brake unit is installed on the right side face of the hydraulic motor, the bearing seat is installed on the right side face of the three-stage planetary gear train, the transition flange is installed at the bottom of the left side face of the hydraulic motor, the valve seat is installed on the bottom face of the transition flange, the left side face and the right side face of the valve seat are respectively provided with a first balance valve group, a first check valve, a fourth check valve and a second balance valve group, the second check valve is installed on the front side face of the valve seat, the third check valve is installed on the rear side face of the valve seat, the shuttle valve is installed in the valve seat, and. The invention has stable and reliable operation, always keeps constant speed by the action of the balance valve in the rotation process, does not generate acceleration impact due to the inertia of a heavy object, and meanwhile, the brake is slowly closed in braking, thereby giving a stable buffer period to the rotation device, not only protecting the whole static pressure pile machine platform, but also protecting the hydraulic motor and the hydraulic brake.
Description
Technical Field
The invention belongs to the technical field of static pile presses, and particularly relates to a hydraulic control slewing device of a static pile press and a control method thereof.
Background
The static pressure pile machine is always the mainstream product on engineering machinery, generally speaking, the rotary inertia of the rotary mechanism of the static pressure pile machine is large, the rotary impact is easily caused when the static pressure pile machine stops, and the control performance of the rotary action is seriously influenced. In the existing latest slewing devices, a pilot-operated overflow valve, an overflow valve and a damping hole are arranged in a slewing cushion valve, when impact occurs or slewing stops in the slewing process, the pressure of an oil inlet and an oil outlet fluctuates, but due to the damping effect of the damping hole, the pressure of an oil inlet overcomes the spring force of the pilot-operated overflow valve, so that the pilot-operated overflow valve is opened instantly, the oil inlet is communicated with the oil return hole, and the slewing is more stable; and an oil supplementing valve is added, when the rotation stops and enters a buffering stage, oil is continuously supplied to the motor from the oil supplementing valve, and then the motor is protected.
However, in practical application, the phenomenon that the rotary buffering device can not be braked and braked can occur, if a shuttle valve and two balance valves are added in front of an original buffering structure, an oil path extending out of the shuttle valve passes through a pressure reducing valve, a sequence valve and a throttle valve, one path of the oil path is connected to a brake oil port, the other path of the oil path is connected to a pilot port of the two balance valves, the buffering effect is found to be poor after the rotary buffering device is used, the reason is summarized, the conflict between the buffer valve and the balance valves is found, only one of the buffer valve and the balance valves can be reserved, the buffer valve and the brake can not be well matched, and the balance valves and the brake can not play a good buffering effect.
Disclosure of Invention
The invention aims to solve the technical problem of providing a hydraulic control slewing device of a static pile machine and a control method thereof aiming at the defects of the prior art, wherein the hydraulic control slewing device has stable and reliable operation, always keeps constant speed by the action of a balance valve in the slewing process, does not generate acceleration impact due to the inertia of a heavy object, is slowly closed when braking, and gives a stable buffer period to the slewing device, thereby not only protecting the whole platform of the static pile machine, but also protecting a hydraulic motor and a hydraulic brake.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a hydraulic control slewer of static pile machine which characterized in that: the brake device comprises a hydraulic motor, a brake unit, a first balance valve group, a first one-way valve, a second one-way valve, a shuttle valve, a third one-way valve, a fourth one-way valve, a second balance valve group, a throttle valve, a transition flange, a first transition oil port block, a second transition oil port block, a first-stage planetary gear train, a second-stage planetary gear train, a third-stage planetary gear train, a bearing seat, an output gear shaft and a valve seat, wherein the brake unit is arranged on the right side surface of the hydraulic motor, the first-stage planetary gear train is arranged on the right side surface of the brake unit, the second-stage planetary gear train is arranged on the right side surface of the first-stage planetary gear train, the third-stage planetary gear train is arranged on the right side surface of the second-stage planetary gear train, the bearing seat is fixedly arranged on the right side surface of the third-, the transition flange is fixedly installed at the bottom of the left side of the hydraulic motor, the valve seat is fixedly installed on the bottom surface of the transition flange, the first transition oil port block is fixedly installed on the front side surfaces of the transition flange and the valve seat, the second transition oil port block is fixedly installed on the rear side surfaces of the transition flange and the valve seat, a first balance valve group, a first check valve, a fourth check valve and a second balance valve group are installed on the left side surface and the right side surface of the valve seat, the second check valve is installed on the front side surface of the valve seat, the third check valve is installed on the rear side surface of the valve seat, the shuttle valve is installed in the valve seat, and the throttle valve is installed at the bottom of the valve seat.
Foretell stopper unit comprises spline gear, helical compression pressure spring, hydro-cylinder, friction disc group and stopper casing, spline gear pass through the bearing and install in the stopper casing, the hydro-cylinder install in the stopper casing centre bore, the helical compression pressure spring install in the mounting groove on the hydro-cylinder, friction disc group install on spline gear and friction disc group is located the hydro-cylinder right side.
Two hydraulic motor connecting oil ports MA are arranged on the front side face of the first transition oil port block.
And the rear side surface of the second transition oil port block is provided with two hydraulic motor connecting oil ports MB.
And a brake connecting oil port b and an oil return box connector T are arranged on the bottom surface of the valve seat.
A control method of a hydraulic control rotating device of a static pile machine is characterized by comprising the following steps: the method comprises the following steps:
firstly) if the slewing device needs to rotate forwards at a constant speed, then oil is fed from an oil inlet and an oil outlet VA, one path of high-pressure oil passes through a shuttle valve and flows through a throttle valve to reach a K port of a brake unit, and the high-pressure oil entering from the K port counteracts the spring force of a spiral compression pressure spring, so that an oil cylinder is pushed to move leftwards, a dynamic friction plate and a static friction plate in a friction plate set are separated, a spline gear drives the dynamic friction plate to rotate freely, and the brake unit is opened; the other path of high-pressure oil flows to a hydraulic motor connecting oil port MA through a fourth check valve, so that the high-pressure oil enters the hydraulic motor, the hydraulic motor rotates clockwise, meanwhile, the high-pressure oil flows to a pilot port of the first balance valve group through a damping small hole, the first balance valve group is opened slowly, the hydraulic motor returns from a hydraulic motor connecting oil port MB, and flows to an oil inlet/outlet port VB through the first balance valve group and the second check valve, so that the high-pressure oil returns to an oil tank; the oil inlet and outlet VA feeds oil, the oil inlet and outlet VB feeds oil so that the output shaft of the hydraulic motor outputs torque, the torque is sequentially transmitted to the first-stage planetary gear train, the second-stage planetary gear train and the third-stage planetary gear train through the spline gear and gradually increased, and finally the torque is output through the output gear shaft to drive the rotary platform to rotate, so that the rotary device always keeps constant speed under the action of a balance valve in the operation process, and acceleration impact cannot be generated due to the inertia of a heavy object;
secondly) if the slewing device needs to be stopped in forward operation, the oil inlet and outlet VA is closed at the moment, and because the rotary inertia of the slewing crane is too large, the weight drives the slewing device to continue to rotate clockwise, the hydraulic motor operates passively at the moment, oil supply is insufficient, negative pressure on one side is caused, oil is supplemented to the hydraulic motor through the oil return tank connector T and the third one-way valve, and the first balance valve group continues to operate and is closed slowly; meanwhile, K port oil of the brake unit slowly flows out through the throttle valve, the spiral compression pressure spring slowly pushes the oil cylinder to move rightwards, the dynamic friction plate and the static friction plate in the friction plate set are slowly attached, the spline gear stops rotating under the friction force of the friction plate set, so that the hydraulic motor also slowly stops rotating, a stable buffer period is given to the slewing device, the whole static pressure pile machine platform is protected, and the hydraulic motor and the hydraulic brake are also protected;
thirdly) if the slewing device needs to rotate reversely at a constant speed, then oil enters from an oil inlet and outlet VB, one path of high-pressure oil passes through the shuttle valve and flows through the throttle valve to reach a K port of the brake unit, and the high-pressure oil entering from the K port counteracts the spring force of the spiral compression pressure spring, so that the oil cylinder is pushed to move leftwards, a dynamic friction plate and a static friction plate in a friction plate set are separated, the spline gear drives the dynamic friction plate to rotate freely, and the brake unit is opened; the other path of high-pressure oil flows to a hydraulic motor connecting oil port MB through a first check valve so as to enter the hydraulic motor, the hydraulic motor rotates anticlockwise, meanwhile, the high-pressure oil flows to a pilot port of a second balance valve group through a damping small hole, the second balance valve group is opened slowly, the hydraulic motor returns oil from the hydraulic motor connecting oil port MA, and flows to an oil inlet/outlet port VA through the second balance valve group and a third check valve so as to return to an oil tank; the oil is fed from an oil inlet and an oil outlet VB, and the oil is fed from the oil inlet and the oil outlet VA, so that the output torque of the output shaft of the hydraulic motor is sequentially transmitted to the primary planetary gear train, the secondary planetary gear train and the tertiary planetary gear train through the spline gear and gradually increased, and finally the torque is output through an output gear shaft to drive the rotary platform to rotate, so that the rotary device always keeps constant speed under the action of a balance valve in the operation process, and the acceleration impact cannot be generated due to the inertia of a heavy object;
fourth) if the slewing device needs to be stopped in forward operation, the oil inlet and outlet VB is closed at the moment, the weight drives the slewing device to continuously rotate clockwise due to too large rotational inertia of the slewing crane, the hydraulic motor is passively operated at the moment, oil supply is insufficient, negative pressure on one side is caused, oil is supplemented to the hydraulic motor through the oil return tank connector T and the second one-way valve, and the second balance valve group is continuously operated and slowly closed; meanwhile, K port oil of the brake unit slowly flows out through the throttle valve, the spiral compression pressure spring slowly pushes the oil cylinder to move rightwards, the dynamic friction plate and the static friction plate in the friction plate set are slowly attached, the spline gear stops rotating under the friction force of the friction plate set, so that the hydraulic motor also stops rotating slowly, a stable buffering period is given to the slewing device, the whole static pressure pile machine platform is protected, and the hydraulic motor and the hydraulic brake are also protected.
The rotary buffering device of the static pile machine can also adjust the buffering sliding distance according to different working conditions on site, increase or reduce the counter-balance force of the balance valve and adjust the throttling size of the throttling valve by adjusting the number of turns of the valve core nuts in the two balance valve groups, and if the sliding distance is too short, the counter-balance force of the balance valve is reduced and the throttling is reduced; if the sliding distance is too long, the balance resistance of the balance valve is increased, and the throttling is increased; in addition, the hydraulic motor, the brake unit, the first-stage planetary gear train, the second-stage planetary gear train and the third-stage planetary gear train are all designed into a module and connected with each other by transition plates, and can be mutually combined through different torques and working conditions, so that the universality is enhanced, and the cost is saved in processing.
The invention has the advantages that: the operation is stable and reliable, the constant speed is always kept by the action of the balance valve in the rotation process, acceleration impact cannot be generated due to inertia of a heavy object, the brake is slowly closed during braking, a stable buffer period is given to the rotation device, the whole static pressure pile machine platform is protected, and the hydraulic motor and the hydraulic brake are also protected.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a view of the invention in the direction A;
FIG. 3 is a view of the invention in the direction B;
FIG. 4 is a view of the invention in the direction C;
FIG. 5 is a schematic structural view of the present invention;
fig. 6 is a hydraulic schematic of the present invention.
Wherein the reference numerals are: the hydraulic brake comprises a hydraulic motor 1, a brake unit 2, a spline gear 201, a spiral compression pressure spring 202, an oil cylinder 203, a friction plate group 204, a brake shell 205, a first balance valve group 3, a first one-way valve 4, a second one-way valve 5, a shuttle valve 6, a third one-way valve 7, a fourth one-way valve 8, a second balance valve group 9, a throttle valve 10, a transition flange 11, a first transition oil port block 12, a second transition oil port block 13, a primary planetary gear train 14, a secondary planetary gear train 15, a tertiary planetary gear train 16, a bearing seat 17, an output gear shaft 18, a valve seat 19, an oil inlet and outlet VA, an oil inlet and outlet VB, a hydraulic motor connecting oil port MA, a hydraulic motor connecting oil port MB, a brake connecting oil port b and an oil return tank interface T.
Detailed Description
The following further describes embodiments of the present invention in conjunction with the attached figures:
the utility model provides a hydraulic control slewer of static pile machine which characterized in that: the brake unit 2 is arranged on the right side surface of the hydraulic motor 1, the primary planetary gear train 14 is arranged on the right side surface of the brake unit 2, the secondary planetary gear train 15 is arranged on the right side surface of the primary planetary gear train 14, the tertiary planetary gear train 16 is arranged on the right side surface of the secondary planetary gear train 15, the bearing seat 17 is fixedly arranged on the right side surface of the tertiary planetary gear train 16, the output gear shaft 18 is arranged on the bearing seat 17 through a bearing, and the output gear shaft 18 is arranged on the bearing seat 17 through a bearing and is connected with the output gear shaft 18 in the three-stage planetary gear train 16 and the shuttle valve 6, the third one-way valve 7, the fourth one-way valve 8, the second balanced valve group 9, the throttle valve 10, the transition flange 11, the first transition oil port block 12, the second transition oil port block 13, the primary planetary gear train 14, the secondary planetary gear train 15, the third planetary gear train 16, the bearing seat 17, the output gear shaft 18 and the valve seat 19 The hydraulic motor comprises a hydraulic motor 1, a transition flange 11, a valve seat 19, a first transition oil port block 12, a second transition oil port block 13, a first balance valve group 3, a first check valve 4, a fourth check valve 8 and a second balance valve group 9, wherein the transition flange 11 is fixedly arranged at the bottom of the left side of the hydraulic motor 1, the valve seat 19 is fixedly arranged on the bottom surface of the transition flange 11, the first transition oil port block 12 is fixedly arranged on the front side surfaces of the transition flange 11 and the valve seat 19, the second transition oil port block 13 is fixedly arranged on the rear side surfaces of the transition flange 11 and the valve seat 19, the left side surface and the right side surface of the valve seat 19 are respectively provided with the first balance valve group 3, the first check valve group 4, the fourth check valve group 8 and the second balance valve group 9, the second check valve group 5 is arranged on the front side.
In the embodiment, the brake unit 2 is composed of a spline gear 201, a spiral compression spring 202, an oil cylinder 203, a friction plate group 204 and a brake housing 205, the spline gear 201 is installed in the brake housing 205 through a bearing, the oil cylinder 203 is installed in a central hole of the brake housing 205, the spiral compression spring 202 is installed in an installation groove of the oil cylinder 203, the friction plate group 204 is installed on the spline gear 201, and the friction plate group 204 is located on the right side of the oil cylinder 203.
In the embodiment, two hydraulic motor connection ports MA are arranged on the front side surface of the first transition port block 12.
In the embodiment, two hydraulic motor connecting ports MB are arranged on the rear side surface of the second transition port block 13.
In the embodiment, the bottom surface of the valve seat 14 is provided with a brake connecting oil port b and an oil return tank port T.
A control method of a hydraulic control rotating device of a static pile machine is characterized by comprising the following steps: the method comprises the following steps:
firstly) if the slewing device needs to rotate forwards at a constant speed, oil is fed from an oil inlet and an oil outlet VA at the moment, one path of high-pressure oil passes through the shuttle valve 6 and flows through the throttle valve 10 to reach a K port of the brake unit 2, the high-pressure oil entering from the K port counteracts the spring force of the spiral compression pressure spring 202, so that the oil cylinder 203 is pushed to move leftwards, a dynamic friction plate and a static friction plate in the friction plate set 204 are separated, the spline gear 201 drives the dynamic friction plate to rotate freely, and the brake unit 2 is opened; the other path of high-pressure oil flows to a hydraulic motor connecting oil port MA through a fourth check valve 8, so that the high-pressure oil enters the hydraulic motor 1, the hydraulic motor 1 rotates clockwise, meanwhile, the high-pressure oil flows to a pilot port of the first balance valve group 3 through a damping small hole, the first balance valve group 3 is opened slowly, the hydraulic motor 1 returns oil from the hydraulic motor connecting oil port MB, and flows to an oil inlet/outlet port VB through the first balance valve group 3 and the second check valve 5, so that the high-pressure oil returns to an oil tank; the oil inlet and outlet VA feeds oil, the oil inlet and outlet VB feeds oil so that the output torque of the output shaft of the hydraulic motor 1 is sequentially transmitted to the first-stage planetary gear train 14, the second-stage planetary gear train 15 and the third-stage planetary gear train 16 through the spline gear 201 and gradually increases the torque step by step, and finally the torque is output through the output gear shaft 18 to drive the rotary platform to rotate, so that the rotary device always keeps constant speed under the action of a balance valve in the operation process, and acceleration impact cannot be generated due to inertia of a heavy object;
secondly) if the slewing device needs to be stopped in forward operation, the oil inlet and outlet VA is closed at the moment, and because the rotary inertia of the slewing crane is too large, the weight drives the slewing device to continue to rotate clockwise, the hydraulic motor 1 operates passively at the moment, oil supply is insufficient, negative pressure on one side is caused, oil is supplied to the hydraulic motor 1 through the oil return tank connector T and the third one-way valve 7, and the first balance valve group 3 continues to operate and is closed slowly; meanwhile, K port oil of the brake unit 2 slowly flows out through the throttle valve 10, the spiral compression pressure spring 202 slowly pushes the oil cylinder 203 to move rightwards, the dynamic friction plate and the static friction plate in the friction plate group 204 are slowly attached, the spline gear 201 stops rotating under the friction force of the friction plate group 204, and therefore the hydraulic motor 1 also stops rotating slowly, a stable buffer period is given to the slewing device, the whole static pressure pile machine platform is protected, and the hydraulic motor and the hydraulic brake are also protected;
thirdly) if the rotating device needs to rotate reversely at a constant speed, then oil enters from an oil inlet and outlet VB, one path of high-pressure oil passes through the shuttle valve 6 and flows through the throttle valve 10 to reach a K port of the brake unit 2, the high-pressure oil entering from the K port counteracts the spring force of the spiral compression pressure spring 202, so that the oil cylinder 203 is pushed to move leftwards, a dynamic friction plate and a static friction plate in the friction plate group 204 are separated, the spline gear 201 drives the dynamic friction plate to rotate freely, and the brake unit 2 is opened; the other path of high-pressure oil flows to a hydraulic motor connecting oil port MB through the first check valve 4 so as to enter the hydraulic motor 1, the hydraulic motor 1 rotates anticlockwise, meanwhile, the high-pressure oil flows to a pilot port of the second balance valve group 9 through a damping small hole, the second balance valve group 9 is opened slowly, the hydraulic motor 1 returns oil from the hydraulic motor connecting oil port MA, and flows to an oil inlet/outlet port VA through the second balance valve group 9 and the third check valve 7 so as to return to an oil tank; the oil inlet and outlet VB is filled with oil, the oil inlet and outlet VA is filled with oil, so that the output torque of the output shaft of the hydraulic motor 1 is sequentially transmitted to the primary planetary gear train 14, the secondary planetary gear train 15 and the tertiary planetary gear train 16 through the spline gear 201 and gradually increased, and finally the torque is output through the output gear shaft 18 to drive the rotary platform to rotate, so that the rotary device always keeps constant speed under the action of a balance valve in the operation process, and acceleration impact cannot be generated due to the inertia of a heavy object;
fourth) if the slewing device needs to be stopped in forward operation, the oil inlet and outlet VB is closed at the moment, and because the rotary inertia of the slewing crane is too large, the weight drives the slewing device to continue to rotate clockwise, the hydraulic motor 1 is passively operated at the moment, the oil supply is insufficient, negative pressure on one side is caused, the oil is supplied to the hydraulic motor 1 through the oil return tank connector T and the second one-way valve 5, and the second balance valve group 9 continues to operate and is slowly closed; meanwhile, oil at the K port of the brake unit 2 slowly flows out through the throttle valve 10, the spiral compression pressure spring 202 slowly pushes the oil cylinder 203 to move rightwards, the dynamic friction plate and the static friction plate in the friction plate group 204 are slowly attached, the spline gear 201 stops rotating under the friction force of the friction plate group 204, and therefore the hydraulic motor 1 also stops rotating slowly, a stable buffer period is given to the slewing device, the whole static pressure pile machine platform is protected, and the hydraulic motor and the hydraulic brake are also protected.
The rotary buffering device of the static pile machine can also adjust the buffering sliding distance according to different working conditions on site, increase or reduce the counter-balance force of the balance valve and adjust the throttling size of the throttling valve 10 by adjusting the number of turns of the valve core nuts in the two balance valve groups, and if the sliding distance is too short, the counter-balance force of the balance valve is reduced and the throttling is reduced; if the sliding distance is too long, the balance resistance of the balance valve is increased, and the throttling is increased; in addition, the hydraulic motor 1, the brake unit 2, the first-stage planetary gear train 14, the second-stage planetary gear train 15 and the third-stage planetary gear train 16 are all designed into a module and connected with each other by transition plates, and can be mutually combined by different torques and working conditions, so that the universality is enhanced, and the cost is saved in processing.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (6)
1. The utility model provides a hydraulic control slewer of static pile machine which characterized in that: the brake system comprises a hydraulic motor (1), a brake unit (2), a first balance valve set (3), a first check valve (4), a second check valve (5), a shuttle valve (6), a third check valve (7), a fourth check valve (8), a second balance valve set (9), a throttle valve (10), a transition flange (11), a first transition oil port block (12), a second transition oil port block (13), a first-stage planetary gear train (14), a second-stage planetary gear train (15), a third-stage planetary gear train (16), a bearing seat (17), an output gear shaft (18) and a valve seat (19), wherein the brake unit (2) is installed on the right side surface of the hydraulic motor (1), the first-stage planetary gear train (14) is installed on the right side surface of the brake unit (2), the second-stage planetary gear train (15) is installed on the right side surface of the first-stage planetary gear train (14), and the third-stage planetary gear train (16) is installed on the right side surface of the second-, the hydraulic motor is characterized in that the bearing seat (17) is fixedly arranged on the right side surface of the three-stage planetary gear train (16), the output gear shaft (18) is arranged on the bearing seat (17) through a bearing, the output gear shaft (18) is connected with a planetary carrier in the three-stage planetary gear train (16), the transition flange (11) is fixedly arranged at the bottom of the left side of the hydraulic motor (1), the valve seat (19) is fixedly arranged on the bottom surface of the transition flange (11), the first transition oil port block (12) is fixedly arranged on the front side surfaces of the transition flange (11) and the valve seat (19), the second transition oil port block (13) is fixedly arranged on the rear side surfaces of the transition flange (11) and the valve seat (19), the left side surface and the right side surface of the valve seat (19) are respectively provided with the first balance valve group (3), the first one-way valve (4), the fourth one-way valve (8) and the second balance valve group (9), the second one-way valve (5) is arranged on the front side face of the valve seat (19), the third one-way valve (7) is arranged on the rear side face of the valve seat (19), the shuttle valve (6) is arranged in the valve seat (19), and the throttle valve (10) is arranged at the bottom of the valve seat (19).
2. The hydraulic control rotary device of the static pile press according to claim 1, characterized in that: stopper unit (2) constitute by spline gear (201), helical compression pressure spring (202), hydro-cylinder (203), friction disc group (204) and brake housing (205), spline gear (201) install in brake housing (205) through the bearing, hydro-cylinder (203) install in brake housing (205) centre bore, helical compression pressure spring (202) install in the mounting groove on hydro-cylinder (203), friction disc group (204) install on spline gear (201) and friction disc group (204) are located hydro-cylinder (203) right side.
3. The hydraulic control rotary device of the static pile press according to claim 1, characterized in that: two hydraulic motor connecting oil ports MA are arranged on the front side face of the first transition oil port block (12).
4. The hydraulic control rotary device of the static pile press according to claim 1, characterized in that: and two hydraulic motor connecting oil ports MB are arranged on the rear side surface of the second transition oil port block (13).
5. The hydraulic control rotary device of the static pile press according to claim 1, characterized in that: and a brake connecting oil port b and an oil return tank connector T are arranged on the bottom surface of the valve seat (14).
6. A method for controlling a hydraulically controlled swiveling device of a static pile machine according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
firstly) if the slewing device needs to rotate forwards at a constant speed, then oil is fed from an oil inlet and an oil outlet VA, one path of high-pressure oil passes through a shuttle valve (6) and flows through a throttle valve (10) to reach a K port of a brake unit (2), the high-pressure oil entering from the K port offsets the spring force of a spiral compression pressure spring (202), so that an oil cylinder (203) is pushed to move leftwards, a dynamic friction plate and a static friction plate in a friction plate group (204) are separated, a spline gear (201) drives the dynamic friction plate to rotate freely, and the brake unit (2) is opened; the other path of high-pressure oil flows to a hydraulic motor connecting oil port MA through a fourth check valve (8) so as to enter the hydraulic motor (1), the hydraulic motor (1) rotates clockwise, meanwhile, the high-pressure oil flows to a pilot port of the first balance valve group (3) through a damping small hole, the first balance valve group (3) is opened slowly, the hydraulic motor (1) returns oil from the hydraulic motor connecting oil port MB, and the high-pressure oil flows to an oil inlet/outlet VB through the first balance valve group (3) and the second check valve (5) so as to return to an oil tank; the oil inlet and outlet VA feeds oil, the oil inlet and outlet VB feeds oil so that the output shaft of the hydraulic motor (1) outputs torque, the torque is sequentially transmitted to the primary planetary gear train (14), the secondary planetary gear train (15) and the tertiary planetary gear train (16) through the spline gear (201) and gradually increases the torque step by step, and finally the torque is output through the output gear shaft (18) to drive the rotary platform to rotate, so that the rotary device always keeps constant speed under the action of a balance valve in the operation process, and acceleration impact cannot be generated due to inertia of a heavy object;
secondly) if the slewing device needs to be stopped in forward operation, the oil inlet and outlet VA is closed at the moment, and because the rotary inertia of the slewing crane is too large, the weight drives the slewing device to continue to rotate clockwise, the hydraulic motor (1) operates passively at the moment, oil supply is insufficient, negative pressure on one side is caused, oil is supplemented to the hydraulic motor (1) through the oil return tank connector T and the third one-way valve (7), and the first balance valve group (3) continues to operate and is closed slowly; meanwhile, K port oil of the brake unit (2) slowly flows out through the throttle valve (10), the spiral compression spring (202) slowly pushes the oil cylinder (203) to move rightwards, a dynamic friction plate and a static friction plate in the friction plate group (204) are slowly attached, and the spline gear (201) stops rotating under the friction force of the friction plate group (204), so that the hydraulic motor (1) also stops rotating slowly, a stable buffer period is provided for the slewing device, the whole static pile machine platform is protected, and the hydraulic motor and the hydraulic brake are also protected;
thirdly) if the rotary device needs to rotate reversely at a constant speed, then oil enters from an oil inlet and outlet VB, one path of high-pressure oil flows through the shuttle valve (6) and reaches a K port of the brake unit (2) through the throttle valve (10), the high-pressure oil entering from the K port offsets the spring force of the spiral compression pressure spring (202), so that the oil cylinder (203) is pushed to move leftwards, a dynamic friction plate and a static friction plate in a friction plate group (204) are separated, the spline gear (201) drives the dynamic friction plate to rotate freely, and the brake unit (2) is opened; the other path of high-pressure oil flows to a hydraulic motor connecting oil port MB through a first check valve (4) to enter the hydraulic motor (1), so that the hydraulic motor (1) rotates anticlockwise, meanwhile, the high-pressure oil flows to a pilot port of a second balance valve group (9) through a damping small hole, the second balance valve group (9) is opened slowly, the hydraulic motor (1) returns oil from the hydraulic motor connecting oil port MA, and the high-pressure oil flows to an oil inlet/outlet VA through the second balance valve group (9) and a third check valve (7) to return to an oil tank; the oil inlet and outlet VB is fed with oil, the oil inlet and outlet VA is fed with oil, so that the output torque of the output shaft of the hydraulic motor (1) is sequentially transmitted to the primary planetary gear train (14), the secondary planetary gear train (15) and the tertiary planetary gear train (16) through the spline gear (201) and gradually increased, and finally the torque is output through the output gear shaft (18) to drive the rotary platform to rotate, so that the rotary device always keeps constant speed under the action of the balance valve in the operation process, and acceleration impact cannot be generated due to the inertia of a heavy object;
fourthly) if the slewing device needs to be stopped in forward operation, the oil inlet and outlet VB is closed, the weight drives the slewing device to continuously rotate clockwise due to the fact that the rotary inertia of the slewing crane is too large, the hydraulic motor (1) operates passively at the moment, oil supply is insufficient, negative pressure on one side is caused, oil is supplemented to the hydraulic motor (1) through the oil return box connector T and the second one-way valve (5), and the second balance valve group (9) continues to operate and is slowly closed; meanwhile, K port oil of the brake unit (2) slowly flows out through the throttle valve (10), the spiral compression spring (202) slowly pushes the oil cylinder (203) to move rightwards, the dynamic friction plate and the static friction plate in the friction plate group (204) are slowly attached, and the spline gear (201) stops rotating under the friction force of the friction plate group (204), so that the hydraulic motor (1) also slowly stops rotating, a stable buffer period is provided for the slewing device, the whole static-pressure pile machine platform is protected, and the hydraulic motor and the hydraulic brake are also protected.
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| CN202011269509.8A CN112483496A (en) | 2020-11-13 | 2020-11-13 | Hydraulic control slewing gear of static pile press and control method thereof |
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