CN114856834A - Pneumatic and manual dual-purpose speed regulating mechanism of electro-hydraulic speed regulator - Google Patents
Pneumatic and manual dual-purpose speed regulating mechanism of electro-hydraulic speed regulator Download PDFInfo
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- CN114856834A CN114856834A CN202210429374.XA CN202210429374A CN114856834A CN 114856834 A CN114856834 A CN 114856834A CN 202210429374 A CN202210429374 A CN 202210429374A CN 114856834 A CN114856834 A CN 114856834A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
- F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
- F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
- F02D1/12—Transmission of control impulse to pump control, e.g. with power drive or power assistance non-mechanical, e.g. hydraulic
- F02D1/14—Transmission of control impulse to pump control, e.g. with power drive or power assistance non-mechanical, e.g. hydraulic pneumatic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
- F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
- F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
- F02D1/10—Transmission of control impulse to pump control, e.g. with power drive or power assistance mechanical
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention provides a pneumatic and manual dual-purpose speed regulating mechanism of an electro-hydraulic speed regulator, which comprises a seat frame assembly, and a pneumatic speed regulating assembly, a manual speed regulating assembly, a lever assembly and a control connecting rod assembly which are arranged on the seat frame assembly. The displacement of the connecting rod can be indirectly controlled after the conversion of the pneumatic speed regulating component by regulating the input air pressure or the manual speed regulating knob by manually rotating the speed regulating knob and then the conversion of the manual speed regulating component, and the control oil is regulated by utilizing the displacement, thereby realizing the function of pneumatic or manual speed regulation. The invention can realize the conversion of the air pressure signal and the manual rotation signal into the displacement signal, regulate and control the rotating speed, limit the highest rotating speed and the lowest rotating speed, has the characteristics of compact structure and convenient installation and regulation, and can ensure the stability and the safety of the diesel engine in the operation process.
Description
Technical Field
The invention belongs to the field of diesel engine speed regulation, and particularly relates to a speed regulating mechanism of an electro-hydraulic speed regulator.
Background
The speed regulator is a rotation speed control mechanism of the diesel engine, has the functions of regulating, stabilizing the rotation speed, limiting the highest rotation speed and the like, and directly influences the performance index of the diesel engine. The speed regulator generally uses a movable spring seat to compress a speed regulating spring, so as to adjust an oil path and push a power piston to control the rotating speed. However, when the speed regulating spring has a high rigidity, the control accuracy of the direct compression spring is poor. Therefore, a device for compressing a spring by using oil pressure to control the rotating speed is developed in the prior art, the function of converting a displacement signal into an oil pressure signal is realized, a new control mechanism is required to be designed for regulating and controlling the displacement signal so as to further improve the speed regulation control function, and the conventional speed regulation control usually has a single pneumatic or manual function and is difficult to adapt to various conditions.
Therefore, it is necessary to further design a pneumatic and manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator.
Disclosure of Invention
The invention aims to provide a pneumatic and manual dual-purpose speed regulating mechanism of an electro-hydraulic speed regulator, further perfects the speed regulating control function of the electro-hydraulic speed regulator, has the characteristics of compact structure and convenience in installation and regulation, and ensures the stability and safety of the diesel engine in the operation process.
The technical scheme of the invention is as follows:
the invention provides a pneumatic and manual dual-purpose speed regulating mechanism of an electro-hydraulic speed regulator, which mainly comprises a seat frame assembly, and a pneumatic speed regulating assembly, a manual speed regulating assembly, a lever assembly and a control connecting rod assembly which are arranged on the seat frame assembly.
The output end of the pneumatic speed regulation assembly is connected with the control connecting rod assembly, the control connecting rod assembly is connected with a control valve column of the electro-hydraulic speed regulator, and the control valve column is driven to move up and down through the control connecting rod assembly by adjusting the input air pressure of the pneumatic speed regulation assembly so as to carry out pneumatic speed regulation.
The output end of the manual speed regulation assembly is connected with the lever assembly, the connection control connecting rod assembly of the lever assembly drives the connection control connecting rod assembly through the lever assembly by manually rotating the manual speed regulation assembly, so that the valve spool is driven to move up and down, and manual speed regulation is realized.
Further, the pneumatic speed regulating assembly comprises a ventilation screw, an air storage cup, an air film device and an air film connecting joint. The ventilation screw is in threaded connection with the air storage cup, so that compressed air can enter the air storage cup; the air film connecting rod penetrates through the corrugated pipe and is welded with the upper end of the corrugated pipe, the air film piece is welded with the lower end of the corrugated pipe, and the air film connecting rod, the corrugated pipe and the air film piece form an air film device which is arranged in the air storage cup; the air film connecting rod is in clearance fit with the air film connector through an air film sheet, and the air film connector is the output end of the pneumatic speed regulating assembly; when the pneumatic speed regulating assembly is assembled rightly or inversely, the air film connector is in clearance connection with the lower end or the upper end of the connecting rod of the control connecting rod assembly, and has the function of forward or reverse control; when compressed air is introduced into the air storage cup, the corrugated pipe deforms and compresses, and then the connecting rod is pushed to move downwards or upwards, so that the function of converting the air pressure signal into the displacement signal is realized.
Furthermore, the manual speed regulation assembly comprises a speed regulation knob, a guide screw, a guide nut, a speed regulation connecting rod, a split washer, a T-shaped screw and a speed regulation nut; the guide screw is transversely installed on the seat frame component, the speed regulation knob is connected with the guide screw to transmit rotary power, the guide nut is in threaded connection with the guide screw and is also rotatably connected with one end of the speed regulation connecting rod, the other end of the speed regulation connecting rod is also rotatably connected with the speed regulation split retainer ring, the T-shaped screw is transversely T-shaped and is installed on the seat frame component, the upper end of the T-shaped screw is in threaded connection with the speed regulation nut, the lower end of the T-shaped screw penetrates through the split retainer ring, a guide frame and a rolling bearing are arranged at one transverse end of the T-shaped screw, the guide frame can slide at one transverse end of the T-shaped screw and is fixed after the position is determined, the rolling bearing is installed on the guide frame, the rolling bearing serves as the output end of the manual speed regulation component, and a lever of the lever component is arranged on the rolling bearing; when the speed regulation knob is manually rotated, the guide screw rods rotate simultaneously, so that the guide nuts move, the T-shaped screw rods are driven to move up and down through the transmission of the speed regulation connecting rod, the lever assembly is driven to move up and down, the control connecting rod assembly is driven to move up and down, and the function of converting a rotation signal into a displacement signal is realized.
Further, the lever assembly comprises a lever, a load tension spring and a reset tension spring; one end of the lever is connected with a speed regulating piston of the speed regulator, the other end of the lever is connected with a load tension spring and a reset tension spring, the middle of the lever is arranged on a rolling bearing, and the load tension spring and the reset tension spring are respectively connected with a connecting rod of the control connecting rod assembly and a seat frame assembly; when the speed is regulated manually, the T-shaped screw rod moves up and down to drive the lever to move up and down, and the connecting rod is driven by the reset tension spring to move up and down, so that the function of converting a rotation signal into a displacement signal is realized.
Further, control link assembly includes the connecting rod, connecting rod upper end or lower extreme all can be connected with the output of pneumatic speed governing subassembly, and the upper end is connected with the extension spring that resets through the trompil round pin, and the lower extreme passes through the bolt and is connected with the control valve column.
Further, the seat frame assembly comprises a seat frame and a slotted pin, the seat frame is provided with mounting holes for mounting the pneumatic speed regulating assembly and the manual speed regulating assembly by being mounted on the speed regulator, and the slotted pin is mounted on the seat frame.
By adopting the mechanism provided by the invention, the displacement of the connecting rod can be indirectly controlled by adjusting the input air pressure and converting the input air pressure by the pneumatic speed regulating component or manually rotating the speed regulating knob and converting the input air pressure by the manual speed regulating component, and the control oil is adjusted by utilizing the displacement, so that the function of pneumatic or manual speed regulation is realized. The pneumatic speed regulating assembly can be assembled in a forward direction and a reverse direction, and the forward and reverse control functions are realized. The T-shaped screw rod is internally provided with a high-speed limiting pin and a high-speed adjusting screw, and has the function of limiting the maximum rotating speed. The connecting rod is provided with a low-speed limiting pin and a low-speed adjusting screw, and has the function of controlling the lowest rotating speed.
Therefore, the invention can realize the conversion of the air pressure signal and the manual rotation signal into the displacement signal, regulate and control the rotating speed, limit the highest rotating speed and the lowest rotating speed, has the characteristics of compact structure and convenient installation and regulation, and can ensure the stability and the safety of the diesel engine in the operation process.
Drawings
FIG. 1 is an outline view of a pneumatic and manual dual-purpose governor mechanism;
FIG. 2 is an exploded view of the seating bracket assembly;
FIG. 3 is an exploded view of the pneumatic governor assembly;
FIG. 4 is an external view of the lever assembly;
FIG. 5 is an exploded view of the manual governor assembly;
FIG. 6 is an exploded view of the control link assembly;
fig. 7 is a working principle diagram of the pneumatic and manual dual-purpose speed regulating mechanism.
1-seat frame assembly 2-pneumatic speed regulation assembly 3-lever assembly 4-manual speed regulation assembly 5-load tension spring 6-reset tension spring 7-control connecting rod assembly
101-seat frame 102-slotted pin
201-air film connector 202-check ring 203-air film sheet 204-sealing ring 205-corrugated pipe 206-air film connecting rod 207-air storage cup 208-ventilation screw 209-gasket
301-lever 302-first cylindrical pin 303-low-speed limit pin
401-guide frame screw 402-deep groove ball bearing 403-bushing 404-knurled nut 405-locking screw
406-guide frame 407-high-speed adjusting screw 408-speed adjusting nut 409-T-shaped screw 410-split retainer ring 411-speed adjusting connecting rod 412-flat end screw 413-elastic pin 414-speed adjusting knob 415-disc spring 416-locking nut 417-torsion spring 418-first shaft sleeve 419-guide screw 420-guide nut 421-second shaft sleeve 422-high-speed limiting pin
701-perforated pin 702-low speed adjusting screw 703-thin nut 704-C-shaped link.
Detailed Description
The following provides a further explanation of the specific structural implementation and the working principle of the present invention with reference to the drawings.
Referring to fig. 1, the pneumatic and manual dual-purpose speed regulating mechanism comprises a seat frame assembly 1, a pneumatic speed regulating assembly 2, a lever assembly 3, a manual speed regulating assembly 4, a load tension spring 5, a reset tension spring 6, a control connecting rod assembly 7 and other components.
Referring to fig. 2, the seat frame assembly 1 is composed of a seat frame 101 and a grooved pin 102. The seat frame 101 is installed on the speed regulator through screws, and the seat frame 101 is provided with installation holes for installing the pneumatic speed regulation assembly 2 and the manual speed regulation assembly 4. The slotted pin 102 is mounted on the mount 101 in interference engagement therewith.
Referring to fig. 3, the pneumatic speed regulation assembly 2 is mainly composed of parts such as a gas film connector 201, a gas film sheet 203, a corrugated pipe 205, a gas film connecting rod 206, a gas storage cup 207, a ventilation screw 208 and the like. The lower end of the corrugated pipe 205 is welded with the air film sheet 203, the upper end of the corrugated pipe is welded with the air film connecting rod 206, the air film sheet 203, the corrugated pipe 205 and the air film connecting rod 206 form an air film device, the air storage cup 207 is arranged in the central hole of the seat frame 101, the lower end of the air storage cup is sequentially provided with a sealing ring 204, the air film device and a retainer ring 202, and the side surface of the air storage cup is provided with a screw hole which is connected with a ventilation screw 208. Vent screw 208 and washer 209 are disposed within the side aperture of mount 101. The upper end of the air film connector 201 is in clearance fit with the air film connecting rod 206 through a central hole of the air film sheet 203.
Referring to fig. 4, the lever assembly 3 is composed of a lever 301, a cylindrical pin 302, a load tension spring 5, a return tension spring 6, and a low-speed limit pin 303. One end of the lever 301 is connected with a speed regulating piston at the upper end of the speed regulating control device, and the other end is provided with a front cylindrical pin 302 and a rear cylindrical pin 302 which are respectively connected with a load tension spring 5 and a reset tension spring 6. A groove for rolling the deep groove ball bearing 402 is also provided on the lever 301. The upper end circular hook rings of the load tension spring 5 and the reset tension spring 6 are respectively arranged on the front cylindrical pin 302 and the rear cylindrical pin 302 of the lever 301, and the lower end circular hook rings are respectively arranged in the groove of the slotted pin 102 and the hole of the perforated pin 701 and are in a stretching state after being arranged.
Referring to fig. 5, the manual speed adjusting assembly 4 is mainly composed of a guide frame 406, a high-speed adjusting screw 407, a speed adjusting nut 408, a T-shaped screw 409, a speed adjusting knob 414, a lead screw 419, a high-speed limit pin 422 and other parts. The guide screw 401, the deep groove ball bearing 402, the bushing 403, and the guide 406 are assembled in sequence, and are provided at the lateral end of the T-shaped screw 409 to be slidable thereon. The guide frame 406 is provided with an opening, a knurled nut 404 is respectively arranged at the front and the rear of the opening, the knurled nuts 404 are in threaded fit with the T-shaped screw 409, and when the two knurled nuts 404 are screwed to the middle guide frame 406, the guide frame 406 can be prevented from moving. A locking screw 405 is provided on the guide 406 to adjust the extent of the opening of the guide 406 and further secure the guide 406 when tightened. The T-shaped screw 409 is arranged in an upper hole and a lower hole in the vertical direction of the seat frame 101, the outer side of the upper end of the T-shaped screw 409 is in threaded connection with the speed regulating nut 408, the inner side of the T-shaped screw is provided with a threaded hole matched with the high-speed regulating screw 407, the lower end of the T-shaped screw is provided with a central hole communicated with the threaded hole of the upper end, the hole is in clearance fit with the high-speed limiting pin 422, and the middle part of the T-shaped screw is provided with a split retainer ring 410 in clearance fit. The upper end of the speed regulating nut 408 is hexagonal and the lower end is cylindrical, the hexagonal is larger than the size of the upper end hole of the seat frame 101, and the cylindrical is in clearance fit with the upper end hole. The upper side and the lower side of the speed regulation connecting rod 411 are respectively connected with a split retainer 410 and a guide nut 420 through cylindrical pins, the center of the guide nut 420 is provided with a threaded hole which is matched with a guide screw 419, and a flat end screw 412 is arranged above the threaded hole. First and second bushings 418, 421 are mounted to the frame 101 with central bores that are clearance fit with the lead screw 419. The lead screw 419 is provided with a through hole in front of the first sleeve 418, and is in interference fit with the elastic pin 413, so that the lead screw can be prevented from being pulled out from the side. The right end of the guide screw 419 is provided with a torsion spring 417, a speed regulation knob 414 and a locking nut 416, the torsion spring 417 is in interference fit with the guide screw 419, the speed regulation knob 414 is provided with a groove for mounting an extension arm of the torsion spring 417, the inside of the groove is in clearance fit with the guide screw 419 and the locking nut 416, and the locking nut 416 is in threaded connection with the guide screw 419. Disc springs 415 are arranged between the second shaft sleeve 421 and the lead screw 419 and between the locking nut 416 and the speed regulation knob 414, so that the installation clearance of the lead screw 419 can be eliminated.
Referring to fig. 6, the control link assembly 7 is comprised of a perforated pin 701, a low speed adjustment screw 702, a thin nut 703 and a C-shaped link 704. The apertured pin 701 has an interference fit with the C-shaped link 704 with its aperture facing directly below. The low-speed adjusting screw 702 is in threaded connection with the upper end of the C-shaped connecting rod 704, and the thin nut 703 can lock the position of the low-speed adjusting screw 702. The lower end of the C-shaped connecting rod 704 is respectively connected with the air film connector 201 and a control valve spool of the speed regulator.
The invention controls the rotational speed of the diesel engine to combine the control device of the speed regulation to use, refer to fig. 7, when the control valve column of the control device of the speed regulation descends and makes the upper end of the window opened, the high-pressure oil enters the control oil circuit, push the speed regulation piston to move downward, and then compress the speed regulation spring, raise the rotational speed; otherwise, the control valve spool rises, the lower end of the window is opened, the control oil flows into the oil pool, the speed regulating piston moves upwards, the speed regulating spring is released, and the rotating speed is reduced. The invention mainly regulates and controls the ascending or descending of the control valve spool so as to realize the rotation speed regulation.
Referring to fig. 7, when the diesel engine runs stably, the valve column of the control valve just seals the window, the position of the speed regulating piston is stable, and the load tension spring 5 and the reset tension spring 6 are both in a stretching state.
For the pneumatic governor portion, the governor knob 414 is adjusted to a minimum speed position before pneumatic governor is used. A high-pressure gas source with stable pressure is introduced into the gas storage cup 207 through the ventilation screw 208, so that the corrugated pipe 205 is compressed downwards, the gas film connecting rod 206 is driven to move downwards, the high-pressure gas is transmitted through the gas film connector 201, the C-shaped connecting rod 704 is pushed to move downwards, the control valve spool is lowered, high-pressure oil enters the control oil way, the speed regulating piston is pushed to move downwards, and the rotating speed is finally increased. Meanwhile, the speed regulating piston moves downwards to enable the right end of the lever 301 to descend, the left end of the lever 301 rises by taking the deep groove ball bearing 402 as a fulcrum, the reset tension spring 6 is further stretched, the C-shaped connecting rod 704 rises, the control valve spool is lifted, the window is closed, and the speed raising process is completed. Otherwise, the pressure of the air source is reduced, the corrugated pipe 205 moves upwards, the control valve spool rises, the control oil enters the oil pool, the speed regulating piston rises, and the rotating speed is reduced; when the right end of the lever 301 rises, the left end descends, so that the C-shaped connecting rod 704 moves downwards, the control valve spool descends, the window is closed, and the deceleration process is completed.
Of course, the pneumatic speed regulating part can also be reversely assembled to realize the function of reverse control. Namely, the air storage cup 207, the air film device, the sealing ring 204, the check ring 202 and the air film connector 201 are inverted, the air film connector 201 is connected with the upper end of the C-shaped connecting rod 704, when compressed air is introduced into the air storage cup 207, the corrugated pipe 205 deforms and compresses to drive the air film connector 201 to move upwards, so that the C-shaped connecting rod 704 moves upwards, the control valve spool is lifted, the rotating speed is reduced, and reverse control is achieved.
For the manual speed regulation part, the speed regulation knob 414 is rotated, the guide screw 419 is driven to rotate by the transmission of the torsion spring 417, and because the guide screw 419 is in threaded connection with the guide nut 420, and the guide nut 420 is connected with the speed regulation connecting rod 411, the rotation is limited, when the guide screw 419 rotates, the guide nut 420 moves transversely, and the split washer 410 is driven to ascend or descend along the T-shaped screw 409 by the transmission of the speed regulation connecting rod 411. Because the speed regulation nut 408 is in threaded connection with the T-shaped screw 409, when the upper end of the split washer 410 is in contact with the lower end of the speed regulation nut 408, the T-shaped screw 409 can be driven to ascend or descend, so that the deep groove ball bearing 402 ascends or descends, the lever 301 also ascends or descends, the C-shaped connecting rod 704 ascends or descends, the opening or closing of a window is controlled, and the speed regulation process is completed like a pneumatic speed regulation process. The guide frame 406 can move on the T-shaped screw rod, the position of a fulcrum of the lever can be changed, and the rotation amplitude can be adjusted, namely when the position of the guide frame 406 is close to the right side of the speed regulating piston, the same ascending distance of the T-shaped screw rod 409 has smaller influence on the C-shaped connecting rod 704, so that the ascending distance of the control valve spool is smaller, the rotation speed change is small, and therefore to achieve the same rotation speed change effect when the guide frame 406 is close to the left side, the T-shaped screw rod 409 needs to ascend more distance, the speed regulating knob 414 needs to rotate more turns, and the rotation speed is adjusted more finely.
For the high-speed limiting part, a high-speed adjusting screw 407 and a high-speed limiting pin 422 are arranged in the T-shaped screw 409, the high-speed adjusting screw 407 ascends or descends along with the T-shaped screw 409, and the lower end of the high-speed limiting pin 422 is in contact with the air storage cup 207. When the high-speed adjusting screw 407 descends to collide with the upper end of the high-speed limit pin 422, the speed regulating knob 414 continues to be rotated, the split washer 410 is separated from the speed regulating nut 408, the T-shaped screw 409 reaches the lowest position, and the valve spool of the control valve is further lowered to the lowest position, and the rotating speed reaches the highest position. Therefore, the invention has the function of limiting the highest rotating speed.
For the low-speed limiting part, a low-speed adjusting screw 702 is arranged on the C-shaped connecting rod 704, and a low-speed limiting pin 303 is arranged on the lever 301. When the rotating speed is reduced to the lowest, the speed regulating piston drives the right end of the lever 301 to ascend, the left end of the lever 301 descends by taking the deep groove ball bearing 402 as a fulcrum under the action of the load tension spring 5 and the reset tension spring 6, and at the moment, the low-speed limiting pin 303 is in contact with the upper end face of the low-speed adjusting screw 702; if the rotating speed continues to decrease, the speed regulating piston drives the right end of the lever 301 to continue to rise, the left end of the lever 301 descends, the low-speed limiting pin 303 presses the low-speed adjusting screw 702 downwards, the C-shaped connecting rod 704 is forced to descend, and the valve spool is driven to descend and is not decelerated. Therefore, the invention has the function of limiting the lowest rotating speed.
Claims (13)
1. The utility model provides a pneumatic manual dual-purpose speed control mechanism of electricity liquid speed regulator which characterized in that: comprises a seat frame component, a pneumatic speed regulating component, a manual speed regulating component, a lever component and a control connecting rod component, wherein the pneumatic speed regulating component, the manual speed regulating component, the lever component and the control connecting rod component are arranged on the seat frame component;
the output end of the pneumatic speed regulation assembly is connected with the control connecting rod assembly, the control connecting rod assembly is connected with a control valve column of the electro-hydraulic speed regulator, and the control connecting rod assembly drives the control valve column to move up and down to perform pneumatic speed regulation by regulating the input air pressure of the pneumatic speed regulation assembly;
the output end of the manual speed regulating assembly is connected with the lever assembly, the lever assembly is connected with the control connecting rod assembly, and the manual speed regulating assembly is rotated manually and drives the control connecting rod assembly through the lever assembly, so that the valve column of the control valve is driven to move up and down, and manual speed regulation is realized.
2. The pneumatic-manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator according to claim 1, characterized in that: the pneumatic speed regulating assembly comprises a ventilation screw, an air storage cup, an air film device and an air film connecting joint; the ventilation screw is in threaded connection with the air storage cup, so that compressed air can enter the air storage cup; the air film connecting rod penetrates through the corrugated pipe and is welded with the upper end of the corrugated pipe, the air film piece is welded with the lower end of the corrugated pipe, and the air film connecting rod, the corrugated pipe and the air film piece form an air film device which is arranged in the air storage cup; the air film connecting rod is in clearance fit with the air film connector through an air film sheet, and the air film connector is the output end of the pneumatic speed regulating assembly; when the pneumatic speed regulating assembly is assembled rightly or inversely, the air film connector is in clearance connection with the lower end or the upper end of the connecting rod of the control connecting rod assembly, and has the function of forward or reverse control; when compressed air is introduced into the air storage cup, the corrugated pipe deforms and compresses, and then the connecting rod is pushed to move downwards or upwards, so that the function of converting the air pressure signal into the displacement signal is realized.
3. The pneumatic-manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator according to claim 1 or 2, characterized in that: the manual speed regulation component comprises a speed regulation knob, a guide screw rod, a guide nut, a speed regulation connecting rod, a split washer, a T-shaped screw rod and a speed regulation nut; the guide screw is transversely installed on the seat frame component, the speed regulation knob is connected with the guide screw to transmit rotary power, the guide nut is in threaded connection with the guide screw and is also rotatably connected with one end of the speed regulation connecting rod, the other end of the speed regulation connecting rod is also rotatably connected with the speed regulation split retainer ring, the T-shaped screw is transversely T-shaped and is installed on the seat frame component, the upper end of the T-shaped screw is in threaded connection with the speed regulation nut, the lower end of the T-shaped screw penetrates through the split retainer ring, a guide frame and a rolling bearing are arranged at one transverse end of the T-shaped screw, the guide frame can slide at one transverse end of the T-shaped screw and is fixed after the position is determined, the rolling bearing is installed on the guide frame, the rolling bearing serves as the output end of the manual speed regulation component, and a lever of the lever component is arranged on the rolling bearing; when the speed regulation knob is manually rotated, the guide screw rod rotates simultaneously, so that the guide nut moves transversely, the split retainer ring is enabled to ascend or descend along the T-shaped screw rod through transmission of the speed regulation connecting rod, the speed regulation nut is further pushed to move up and down, the T-shaped screw rod is driven to move up and down, the lever assembly is driven to move up and down, the control connecting rod assembly is driven to move up and down, and the function that the rotation signal is converted into the displacement signal is realized.
4. The pneumatic-manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator according to claim 3, characterized in that: the lever assembly comprises a lever, a load tension spring and a reset tension spring; one end of the lever is connected with a speed regulating piston of the speed regulator, the other end of the lever is connected with a load tension spring and a reset tension spring, the middle of the lever is arranged on a rolling bearing, and the load tension spring and the reset tension spring are respectively connected with a connecting rod of the control connecting rod component and a seat frame component; when the speed is manually adjusted, the T-shaped screw rod moves up and down to drive the lever to move up and down, and the connecting rod is driven to move up and down by the reset tension spring, so that the function of converting a rotation signal into a displacement signal is realized.
5. The pneumatic-manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator according to claim 3, characterized in that: the control connecting rod assembly comprises a connecting rod, the upper end or the lower end of the connecting rod can be connected with the output end of the pneumatic speed regulating assembly, a hole forming pin is arranged at the upper end of the connecting rod and connected with a reset tension spring, and the lower end of the connecting rod is connected with a control valve spool through a bolt.
6. The pneumatic-manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator according to claim 5, characterized in that: the connecting rod is C-shaped, and the upper end and the lower end of the connecting rod are respectively positioned above and below the pneumatic speed regulating assembly.
7. The pneumatic-manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator according to claim 4, characterized in that: the upper end of a connecting rod of the control connecting rod component is provided with a low-speed adjusting screw and is locked by a nut, a lever of the lever component is provided with a low-speed limiting pin, when the rotating speed is reduced to the minimum, the speed regulating piston drives the right end of the lever to ascend, the left end of the lever descends by taking a rolling bearing as a fulcrum under the action of a load tension spring and a reset tension spring, and the low-speed limiting pin is in contact with the upper end face of the low-speed adjusting screw at the moment, if the rotating speed continues to descend, the connecting rod is forced to descend, and the valve column is driven to descend without decelerating.
8. The pneumatic-manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator according to claim 3, characterized in that: the upper end of the T-shaped screw is connected with a high-speed limiting screw, the lower end of the T-shaped screw is provided with a high-speed limiting pin, and the lower end of the high-speed limiting pin is in contact with the gas storage cup; when the rotating high-speed limiting screw descends and collides with the upper end of the high-speed limiting pin, the speed regulating knob is continuously rotated, the split washer is separated from the speed regulating nut, the lowest position of the T-shaped screw rod can be regulated, and the maximum rotating speed can be set.
9. The pneumatic-manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator according to claim 4, characterized in that: the seat frame assembly comprises a seat frame and a slotted pin, the seat frame is arranged on the speed regulator and provided with mounting holes for mounting the pneumatic speed regulating assembly and the manual speed regulating assembly, and the slotted pin is mounted on the seat frame.
10. The pneumatic-manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator according to claim 9, characterized in that: the upper ends of the load tension spring and the reset tension spring are respectively arranged on the front cylindrical pin and the rear cylindrical pin, the lower ends of the load tension spring and the reset tension spring are respectively arranged in a hole of a perforated pin of the control connecting rod assembly and a groove of a slotted pin of the seat frame, and the load tension spring and the reset tension spring are in a stretching state after being arranged.
11. The pneumatic-manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator according to claim 3, characterized in that: the speed regulation knob is connected with the guide screw rod through a torsion spring.
12. The pneumatic-manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator according to claim 3, characterized in that: the manual speed regulation assembly further comprises a locking nut, and the locking nut is connected with the guide screw to fix the speed regulation knob.
13. The pneumatic-manual dual-purpose speed regulating mechanism of the electro-hydraulic speed regulator according to claim 3, characterized in that: the gas film device is arranged in the gas storage cup and sealed through a sealing ring and a retaining ring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210429374.XA CN114856834B (en) | 2022-04-22 | 2022-04-22 | Pneumatic and manual dual-purpose speed regulating mechanism of electrohydraulic speed regulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210429374.XA CN114856834B (en) | 2022-04-22 | 2022-04-22 | Pneumatic and manual dual-purpose speed regulating mechanism of electrohydraulic speed regulator |
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| CN114856834A true CN114856834A (en) | 2022-08-05 |
| CN114856834B CN114856834B (en) | 2023-06-27 |
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| CN114856834B (en) | 2023-06-27 |
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