CN220234388U - Variable-speed variable-torque electric cylinder and engineering machinery thereof - Google Patents
Variable-speed variable-torque electric cylinder and engineering machinery thereof Download PDFInfo
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- CN220234388U CN220234388U CN202321440276.2U CN202321440276U CN220234388U CN 220234388 U CN220234388 U CN 220234388U CN 202321440276 U CN202321440276 U CN 202321440276U CN 220234388 U CN220234388 U CN 220234388U
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Abstract
The utility model provides an electric cylinder with variable speed and variable torque, and relates to the technical field of electric cylinders; the device comprises a cylinder body and a driving motor, wherein a control system, a stepless speed changer driving system, a stepless speed changer driven system and an action rod are arranged in the cylinder body, and the driving motor is in transmission connection with the stepless speed changer driving system; the driving system of the continuously variable transmission is in transmission connection with the driven system of the continuously variable transmission through a cylinder belt; the continuously variable transmission driven system is suitable for driving the action rod to move; the driving shaft control motor electrically connected with the control system is connected to the driving system of the continuously variable transmission, and the driven shaft control motor electrically connected with the control system is connected to the driven system of the continuously variable transmission. The utility model also provides engineering machinery. By the scheme of the utility model, the electric cylinder has the characteristics of high-efficiency transmission, high power density, high frequency response and strong impact resistance.
Description
Technical Field
The utility model relates to the technical field of electric cylinders, in particular to an electric cylinder with variable speed and variable torque and engineering machinery thereof.
Background
Hydraulic cylinders and motor direct drive electric cylinders are currently the most common end effectors of engineering machinery. The valve-controlled oil cylinder has the advantages of strong overload and good dynamic characteristics, but the hydraulic transmission efficiency is low; the pump control type oil cylinder has the characteristic of high efficiency, but the dynamic characteristic is insufficient; the motor direct-drive type electric cylinder can realize high-efficiency and high-frequency response transmission, but has low power density and poor impact resistance. Therefore, the existing hydraulic oil cylinder and motor direct drive type electric cylinder can not meet the requirements of high-efficiency transmission, high power density, high frequency response and high impact resistance of engineering machinery.
Disclosure of Invention
The utility model discloses a variable-speed and variable-torque electric cylinder, which is simple in structure and convenient to operate, and aims to solve the problem that the existing hydraulic cylinder and motor direct-drive type electric cylinder cannot meet the requirements of high-efficiency transmission, high power density, high frequency response and high impact resistance of engineering machinery.
The utility model adopts the following scheme:
the application provides an electric cylinder with variable speed and variable torque, which comprises a cylinder body, a driving motor and a control system; the driving motor is provided with a motor controller electrically connected with the control system, and a stepless speed changer driving system, a stepless speed changer driven system and an action rod are arranged in the cylinder body, wherein the driving motor is in transmission connection with the stepless speed changer driving system; the driving system of the continuously variable transmission is in transmission connection with the driven system of the continuously variable transmission through a cylinder belt; the continuously variable transmission driven system is connected with the action rod and is suitable for driving the action rod to move; the driving shaft control motor is connected with the driving shaft control motor, the driven shaft control motor is connected with the driven shaft control motor, the driving shaft control motor and the driven shaft control motor are fixedly arranged on the cylinder body and configured to control and adjust the connection positions between the cylinder belt and the driving system and the driven system of the continuously variable transmission so as to control and adjust the transmission ratio of the driving system and the driven system of the continuously variable transmission.
Further, the stepless speed changer driving system comprises a driving shaft, a driving shaft top disc and a driving shaft pressure disc which are sleeved on the driving shaft, wherein the driving shaft is in transmission connection with the driving motor; the driving shaft top disc is fixed on one side of the driving shaft, which is close to the driving motor; the driving shaft pressure plate is movably connected to the driving shaft and is connected to the driving shaft control motor; the cylinder belt is movably connected between the driving shaft top disc and the driving shaft pressure disc, is suitable for being jacked up when the driving shaft pressure disc moves close to the driving shaft top disc so that the transmission radius of the driving shaft pressure disc is increased, and is configured to enable the transmission radius of the driving shaft pressure disc to be reduced when the driving shaft pressure disc deviates from the driving shaft top disc.
Further, the driving shaft pressure plate is in threaded connection with the driving shaft, a driving shaft pressure plate gear is arranged on an output shaft of the driving shaft control motor, the driving shaft pressure plate gear is connected with the driving shaft pressure plate through a gear pair, and the driving shaft control motor is suitable for controlling the driving shaft pressure plate to be close to or deviate from the driving shaft top plate through forward rotation or reverse rotation.
Further, the driven system of the continuously variable transmission comprises a driven shaft, a driven shaft top disc and a driven shaft pressure disc which are sleeved on the driven shaft; one end of the driven shaft is connected with the action rod through a telescopic mechanism, the driven shaft top disc is fixed on the driven shaft, the driven shaft pressure disc is movably connected on the driving shaft and is connected to the driven shaft control motor through a gear pair, and the driven shaft pressure disc is configured to be capable of approaching or deviating from the driven shaft top disc under the control of the driven shaft control motor; the cylinder belt is movably connected between the driven shaft top disc and the driven shaft pressure disc.
Further, a brake control motor electrically connected to the control system is further arranged in the cylinder body, a driven shaft brake shoe is arranged on the driven shaft, a brake pull gear is connected to an output shaft of the brake control motor, and the brake pull gear is connected with the driven shaft brake shoe through a spring automatic telescopic device.
Further, the telescopic mechanism comprises a screw rod nut sleeved on the driven shaft, the outer side of the screw rod nut is fixedly connected with the action rod, and a displacement sensor electrically connected to the control system is arranged on the action rod.
Further, the driven shaft pressure plate is arranged opposite to the driving shaft pressure plate.
Further, the driving shaft top disc, the driving shaft pressure disc, the driven shaft top disc and the driven shaft pressure disc are all provided with conical surfaces suitable for being connected with the cylinder belt, the driving shaft top disc and the conical surfaces of the driving shaft pressure disc are oppositely arranged, and the driven shaft top disc and the conical surfaces of the driven shaft pressure disc are oppositely arranged.
The utility model also provides engineering machinery comprising the variable-speed variable-torque electric cylinder.
Further, the electric cylinders of variable speed and variable torque are provided in two.
The beneficial effects are that: the electric cylinder belt stepless speed change device can adjust the rotating speed and torque in real time according to the load, and when the external load is large, the transmission ratio of the stepless speed change device is increased, so that the speed and torque increasing effect is achieved, and the large shoveling force operation of the engineering machinery is ensured; when the external load is small, the transmission ratio of the stepless speed change device is reduced, and the functions of speed increasing and torque reducing are achieved, so that the engineering machinery can be ensured to run at high speed and high efficiency.
Drawings
FIG. 1 is a schematic diagram of a variable speed, variable torque electric cylinder according to an embodiment of the present utility model;
FIG. 2 is a schematic view showing the external structure of a variable speed and torque electric cylinder according to an embodiment of the present utility model;
FIG. 3 is a schematic illustration of an application of a work machine according to an embodiment of the present disclosure;
icon: a drive motor 1; a coupling 2; a driving shaft top plate 3; a driving shaft pressure plate 4; a driving shaft platen gear 5; a driving shaft control motor 6; a cylinder belt 7; a drive shaft bearing 8; a driven shaft right bearing 9; a driven shaft brake shoe 10; a spring automatic retractor 11; brake pull-wire gear 12; a brake control motor 13; a driven shaft top plate 14; a driven shaft platen 15; a driven shaft platen gear 16; the driven shaft controls the motor 17; a driven shaft 18; a driven shaft intermediate bearing 19; a lead screw nut 20; an action lever 21; a roller bearing 22; a displacement sensor 23; a driven shaft left bearing 24; an end face bearing 25; a cylinder 26; a composite controller 27; a motor controller 28; a power battery 29; an electric handle 30; a first electric cylinder 31; a second electrically powered cylinder 32.
Detailed Description
Examples
As shown in fig. 1 to 3, the present embodiment provides a construction machine including the above-described variable-speed variable-torque electric cylinder. The variable-speed and variable-torque electric cylinder comprises a cylinder body 26 and a driving motor 1, wherein a control system, a continuously variable transmission driving system, a continuously variable transmission driven system and an action rod 21 are arranged in the cylinder body 26, and the driving motor 1 is in transmission connection with the continuously variable transmission driving system; the driving system of the continuously variable transmission is in transmission connection with the driven system of the continuously variable transmission through a cylinder belt 7; the continuously variable transmission driven system is adapted to drive the action bars 21 in motion; the driving shaft control motor 6 electrically connected with the control system is connected to the continuously variable transmission driving system, the driven shaft control motor 17 electrically connected with the control system is connected to the continuously variable transmission driven system, and the driving shaft control motor 6 and the driven shaft control motor 17 are configured to control the connection positions between the cylinder belt 7 and the continuously variable transmission driving system and between the continuously variable transmission driven system so as to control and adjust the transmission ratio of the continuously variable transmission driving system and the continuously variable transmission driven system.
In this embodiment, as shown in fig. 3, the working machine may include a plurality of mechanical arms, each of which is provided with one of the electric cylinders for variable speed and variable torque. For example, the combined driving or the independent driving can be realized by the first mechanical arm and the second mechanical arm, wherein the first mechanical arm is hinged with a first electric cylinder 31, and the second mechanical arm is hinged with a second electric cylinder 32.
Referring to fig. 1, in this embodiment, the continuously variable transmission driving system includes a driving shaft, a driving shaft top disc 3 and a driving shaft pressure disc 4 that are sleeved on the driving shaft, where the driving shaft is in transmission connection with the driving motor 1; the driving shaft top plate 3 is fixed on one side of the driving shaft, which is close to the driving motor 1; the driving shaft pressure plate 4 is movably connected to the driving shaft and is connected to the driving shaft control motor 6; the cylinder belt 7 is movably connected between the driving shaft top plate 3 and the driving shaft pressure plate 4, and is suitable for being jacked up when the driving shaft pressure plate 4 is close to the driving shaft top plate 3 so that the transmission radius of the driving shaft pressure plate 4 is increased, and when the driving shaft pressure plate 4 is away from the driving shaft top plate 3, the transmission radius of the driving shaft pressure plate 4 is reduced. The driving shaft pressure plate 4 is in threaded connection with the driving shaft, a driving shaft pressure plate gear 5 is arranged on an output shaft of the driving shaft control motor 6, the driving shaft pressure plate gear 5 is connected with the driving shaft pressure plate 4 through a gear pair, and the driving shaft control motor 6 is suitable for controlling the driving shaft pressure plate 4 to be close to or deviate from the driving shaft top plate 3 through forward rotation or reverse rotation.
Specifically, one end of the driving shaft is connected with an output shaft of the driving motor 1 through a coupling 2, the driving motor 1 is provided with a motor controller 28, and the motor controller 28 is electrically connected with a control system so as to receive the control of the control system; the other end of the driving shaft is installed in the cylinder body 26 through a driving shaft bearing 8, the driving shaft top disc 3 can be integrally formed on the driving shaft or installed on the driving shaft through a fixed installation mode, the driving shaft pressure disc 4 is movably arranged on the driving shaft, and the driving shaft pressure disc 4 and the driving shaft can be connected through threads, so that when the driving shaft pressure disc 4 rotates, the driving shaft pressure disc can progressively move back and forth on the driving shaft to approach or deviate from the driving shaft top disc 3. The driving shaft top disc 3 and the driving shaft pressure disc 4 are provided with opposite conical surfaces, and involute conical teeth can be arranged on the conical surfaces for meshing connection with the cylinder belt 7. The side of the driving shaft is also provided with a driving shaft control motor 6, an output shaft of the driving shaft control motor 6 is provided with a driving shaft pressure plate gear 5, the outer side of the driving shaft pressure plate 4 is provided with meshing teeth matched with the driving shaft pressure plate gear 5, and the meshing teeth can be always meshed with the driving shaft pressure plate gear 5 when the driving shaft pressure plate 4 moves back and forth. By controlling the forward rotation and the reverse rotation of the driving shaft control motor 6, the driving shaft pressure plate 4 can be controlled to be close to or far away from the driving shaft top plate 3, so that the connection position between the cylinder belt 7 and the driving shaft pressure plate 4 is controlled, when the driving shaft pressure plate 4 is close to the driving shaft top plate 3, the cylinder belt 7 is jacked up, so that the connection position between the cylinder belt 7 and the driving shaft pressure plate 4 is raised, the transmission radius of the driving shaft pressure plate 4 is increased, and otherwise, the transmission radius is reduced. Here, the driving shaft control motor 6 is connected to the control system, which can automatically control the forward rotation and reverse rotation of the driving shaft control motor 6, the number of turns, etc., according to the magnitude of the external load.
Continuing to refer to fig. 1, the driven system of the continuously variable transmission comprises a driven shaft 18, a driven shaft top disk 14 sleeved on the driven shaft 18 and a driven shaft pressure disk 15; wherein the driven shaft 18 is mounted in the cylinder 26 through a driven shaft left bearing 24, a driven shaft right bearing 9 and a driven shaft middle bearing 19. One end of the driven shaft 18 is connected with the action rod 21 through a telescopic mechanism, the driven shaft top disc 14 is fixed on the driven shaft 18, the driven shaft pressure disc 15 is movably connected on the driven shaft 18 and is connected to the driven shaft control motor 17 through a gear pair, and the driven shaft pressure disc 15 is configured to be capable of approaching or departing from the driven shaft top disc 14 under the control of the driven shaft control motor 17; the cylinder belt 7 is movably connected between the driven shaft top disk 14 and the driven shaft pressure disk 15. The output shaft 18 is in drive connection with the drive shaft via the cylinder belt 7. The driven shaft top plate 14 may be integrally formed on the driven shaft 18, or may be detachably fixed to the driven shaft 18. The driven shaft pressure plate 15 is movably connected to the driven shaft 18 through a gear pair; the side of the driven shaft 18 is provided with a driven shaft control motor 17, the driven shaft control motor 17 is fixed in the cylinder 26, a driven shaft pressure plate gear 16 is fixed on an output shaft of the driven shaft control motor, the driven shaft pressure plate gear 16 is connected with the driven shaft pressure plate 15 in a gear meshing mode, and meshing teeth on the driven shaft pressure plate 15 can adopt involute teeth, so that the driven shaft pressure plate 15 can always keep connection with the driven shaft pressure plate gear 16 when moving back and forth. The driven shaft top disk 14 and the driven shaft pressure disk 15 are provided with opposing conical surfaces, on which involute conical teeth can be provided for engagement with the cylinder belt 7. The cylinder belt 7 is limited on the conical surfaces of the driving shaft top disc 3, the driving shaft pressure disc 4, the driven shaft top disc 14 and the driven shaft pressure disc 15, and the connection position of the cylinder belt 7 can be adjusted by adjusting the positions of the driving shaft pressure disc 4 and the driven shaft pressure disc 15, so that the transmission radius of the driving shaft pressure disc 4 and the driven shaft pressure disc 15 is adjusted to adjust the transmission ratio of the driving shaft and the transmission shaft. In another embodiment, the driven shaft platen 15 is disposed opposite the driving shaft platen 4. I.e. the driving shaft pressure plate 4 and the driven shaft pressure plate 15 are respectively arranged at two opposite sides of the cylinder belt 7. This arrangement makes it possible to adjust the downward positions of the cylinder belt 7 simultaneously with the driving shaft platen 4 and the driven shaft platen 15 without a large shift affecting the transmission effect and the life of the cylinder belt 7.
With continued reference to fig. 1, in this embodiment, a brake control motor 13 electrically connected to the control system is further disposed in the cylinder 26, a driven shaft brake shoe 10 is disposed on the driven shaft 18, a brake pull gear 12 is connected to an output shaft of the brake control motor 13, and the brake pull gear 12 is connected to the driven shaft brake shoe 10 through a spring automatic retractor 11. The follower brake shoe 10 is of conventional construction and is capable of braking the follower shaft 18 under the control of a control motor to stall the follower shaft 18. The driven shaft brake shoe 10 is connected with a brake control motor 13 through a spring automatic telescopic device 11 and a brake pull-wire gear 12, so that the work of the driven shaft brake shoe 10 can be controlled through the brake control motor 13. The spring automatic telescopic device 11 and the brake pull-wire gear 12 are commonly used brake matching mechanisms, and the working mode is that; the brake control motor 13 rotates and pulls up the spring automatic telescopic device 11 to enable a ratchet wheel inside the spring automatic telescopic device 11 to be blocked, so that the driven shaft brake shoe 10 is locked on the driven shaft 18, the brake control motor 13 rotates again to pull up the spring automatic telescopic device 11, the ratchet wheel inside the spring automatic telescopic device 11 is automatically separated from the world, and the driven shaft brake shoe 10 is separated from the driven shaft 18. By the above-described braking mechanism, the driven shafts 18 can be provided with a holding function for stopping the brake. Of course, the braking mechanism is only one embodiment, and other existing braking modes can be adopted to realize the braking and braking releasing actions.
The end of the driven shaft 18 passes through a telescopic mechanism to convert the rotational motion of the driven shaft 18 into telescopic motion. Specifically, the telescopic mechanism comprises a screw nut 20 sleeved on the driven shaft 18, the outer side of the screw nut 20 is fixedly connected with the action rod 21, and a displacement sensor 23 electrically connected to the control system is arranged on the action rod 21. The driven shaft 18 rotates to drive the screw nut 20 to move back and forth, so as to drive the action rod 21 fixed on the screw nut 20 to perform telescopic movement. The actuating rod 21 is here fixed above the driven shaft left bearing 24 and the driven shaft intermediate bearing 19, and a roller bearing 22 and an end bearing 25 for fixing the actuating rod are provided on the cylinder block 26. The displacement sensor 23 is used to monitor the position of the actuating lever 21 and to transmit this position information to the control system.
The control system comprises a composite controller 27, wherein the composite controller 27 is connected with a power battery 29 for supplying power, and the composite controller 27 is electrically connected with the motor controller 28, the driving shaft control motor 6, the driven shaft control motor 17 and the brake control motor 13. In another embodiment, an electric handle 30 is further provided, and the electric handle 30, the power battery 29, the motor controller 28 and the compound controller 27 are provided with CAN signal transmission. The working principle of the control system is as follows: the displacement sensor 23 of the electric handle 30 and the action rod 21 senses signals to the composite controller 27, the composite controller 27 utilizes the received sensing information to send control signals to the motor controller 28, the driving shaft control motor 6, the braking control motor 13 and the driven shaft control motor 17 respectively after calculation by a control algorithm, the driving motor 1, the driving shaft control motor 6, the braking control motor 13 and the driven shaft control motor 17 are controlled to rotate positively and negatively, and further the change of the transmission ratio of the driving shaft and the driven shaft 18 of the stepless speed changer and the action and release of the brake are controlled, so that the electric cylinder can adjust the rotating speed and the torque in real time according to the external load, and the aim of efficient transmission is fulfilled. In this embodiment, the composite controller 27 is a conventional control device, including a servo control system.
Through this electronic jar, can realize the control of following multiple operating mode:
a: the electric cylinder works under the working condition of low-speed and high-torque lifting, and is concretely as follows:
the electric handle 30 sends an extension control command to the composite controller 27, the composite controller 27 sends a control signal to the motor controller 28, the motor controller 28 controls the motor to rotate forward, the motor drives the driving shaft to rotate forward through the coupling 2, the composite controller 27 controls the driving disc to control the motor to rotate forward, the driving shaft pressure disc gear 5 drives the driving shaft pressure disc 4 to rotate forward through the gear pair, the driving shaft pressure disc 4 presses the driving shaft top disc 3, the driving shaft pressure disc 4 and the driving shaft top disc 3 jack up the cylinder belt 7, and the transmission radius of the driving shaft pressure disc 4 is increased; at this time, the compound controller 27 controls the driven disc to control the motor to rotate reversely, the driven shaft pressing disc 15 drives the driven shaft pressing disc 15 to rotate reversely through the gear pair, the driven shaft pressing disc 15 deviates from the driven shaft top disc 14, the driven shaft top disc 14 and the driven shaft pressing disc 15 put down the cylinder belt 7, so that the transmission radius of the driven shaft pressing disc 15 is reduced, the transmission ratio of the continuously variable transmission is increased, and the speed and the torque can be reduced and increased; in the process, the driving shaft drives the driven shaft 18 to rotate positively through the cylinder belt 7, the driven shaft 18 drives the screw nut 20 to move through the nut pair, and the screw nut 20 is fixedly connected to the action rod 21, so that the action rod 21 is driven to move in a speed-reducing and torque-increasing manner.
B: the electric cylinder works under the high-speed small-torque lifting working condition, and the specific steps are as follows:
this example is essentially identical to example a in operation, except that: the compound controller 27 controls the driving disc to control the motor to rotate reversely, the driving disc gear 5 drives the driving disc 4 to rotate reversely through the gear pair, the driving disc 4 deviates from the driving disc 3, the driving disc 4 and the driving disc 3 put down the cylinder belt 7, the transmission radius of the driving disc 4 is reduced, the driven disc 15 and the driven disc 14 put down the cylinder belt 7, the transmission radius of the driven disc 15 is reduced, the transmission ratio of the stepless speed changer is reduced, and the electric cylinder realizes speed increasing, torque reducing and lifting.
C: the electric cylinder works under the working condition of low-speed large torque descent, and the specific steps are as follows:
this example is essentially identical to example a in operation, except that: the motor controller 28 controls the driving motor 1 to rotate reversely, and the electric cylinder realizes speed reduction, torque increase and descending.
D: the electric cylinder works under the working condition of high-speed small torque descent, and the specific steps are as follows:
the working process of the embodiment of the variable speed and variable torque electric cylinder of the embodiment is basically the same as that of the embodiment B, and the difference is that: the motor controller 28 controls the driving motor 1 to rotate reversely, and the electric cylinder realizes speed increasing, torque reducing, lifting and descending.
E: the electric cylinder brake is kept and released, and the specific steps are as follows:
(1) When the electric cylinder needs to be braked and kept, the composite controller 27 controls the brake control motor 13 to rotate forwards, the spring automatic telescopic device 11 is pulled up, the ratchet wheel inside the spring automatic telescopic device 11 is blocked, and further stopping is achieved, and the driven shaft 18 is locked by the driven shaft brake shoe 10.
(2) When the electric cylinder is required to release the brake, the composite controller 27 controls the brake control motor 13 to rotate forward again, the spring automatic telescopic device 11 is pulled up, the ratchet wheel in the spring automatic telescopic device 11 is automatically unlocked, starting is further achieved, and the driven shaft brake shoe 10 is disconnected from the driven shaft 18.
In another specific embodiment, as shown in fig. 3, when the first electric cylinder 31 and the second electric cylinder 32 are provided for control, the first electric cylinder 31 and the second electric cylinder 32 can be operated in a low-speed high-torque descending working condition when the engineering machinery is in an excavating working condition so as to ensure the powerful shoveling of the engineering machinery; or the first and second electric cylinders 32 may be operated in a high speed, low torque descent condition to ensure high speed operation of the work machine.
According to the embodiment of the utility model, the electric cylinder can meet the requirements of high-efficiency transmission, high power density, high frequency response and strong impact resistance of engineering machinery.
It should be understood that: the above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model.
The description of the drawings in the embodiments above illustrates only certain embodiments of the utility model and should not be taken as limiting the scope, since other related drawings may be made by those of ordinary skill in the art without the benefit of the inventive faculty.
Claims (10)
1. The variable-speed and variable-torque electric cylinder comprises a cylinder body, a driving motor and a control system, wherein a motor controller electrically connected with the control system is arranged on the driving motor; the driving system of the continuously variable transmission is in transmission connection with the driven system of the continuously variable transmission through a cylinder belt; the continuously variable transmission driven system is connected with the action rod and is suitable for driving the action rod to move; the driving shaft control motor is connected with the control system, the driven shaft control motor is connected with the control system, the driving shaft control motor and the driven shaft control motor are fixedly arranged on the cylinder body and configured to control and adjust the connection positions between the cylinder belt and the driving system and the driven system of the continuously variable transmission so as to control and adjust the transmission ratio of the driving system and the driven system of the continuously variable transmission.
2. The variable speed and variable torque electric cylinder according to claim 1, wherein the continuously variable transmission driving system comprises a driving shaft, a driving shaft top plate and a driving shaft pressure plate which are sleeved on the driving shaft, wherein the driving shaft is in transmission connection with the driving motor; the driving shaft top disc is fixed on one side of the driving shaft, which is close to the driving motor; the driving shaft pressure plate is movably connected to the driving shaft and is connected to the driving shaft control motor; the cylinder belt is movably connected between the driving shaft top disc and the driving shaft pressure disc, is suitable for being jacked up when the driving shaft pressure disc moves close to the driving shaft top disc so that the transmission radius of the driving shaft pressure disc is increased, and is configured to enable the transmission radius of the driving shaft pressure disc to be reduced when the driving shaft pressure disc deviates from the driving shaft top disc.
3. The variable speed and variable torque electric cylinder according to claim 2, wherein the drive shaft pressure plate is in threaded connection with the drive shaft, a drive shaft pressure plate gear is provided on an output shaft of the drive shaft control motor, the drive shaft pressure plate gear is connected with the drive shaft pressure plate through a gear pair, and the drive shaft control motor is adapted to control the drive shaft pressure plate to approach or depart from the drive shaft top plate through forward rotation or reverse rotation.
4. The variable speed and torque electric cylinder according to claim 2, wherein the continuously variable transmission driven system comprises a driven shaft, and a driven shaft top plate and a driven shaft pressure plate sleeved on the driven shaft; one end of the driven shaft is connected with the action rod through a telescopic mechanism, the driven shaft top disc is fixed on the driven shaft, the driven shaft pressure disc is movably connected on the driving shaft and is connected to the driven shaft control motor through a gear pair, and the driven shaft pressure disc is configured to be capable of approaching or deviating from the driven shaft top disc under the control of the driven shaft control motor; the cylinder belt is movably connected between the driven shaft top disc and the driven shaft pressure disc.
5. The variable speed and variable torque electric cylinder of claim 4, further comprising a brake control motor electrically connected to the control system, wherein the driven shaft is provided with a driven shaft brake shoe, and wherein the output shaft of the brake control motor is connected with a brake pull gear, and wherein the brake pull gear is connected with the driven shaft brake shoe through a spring automatic retractor.
6. The variable speed, variable torque electric cylinder of claim 4 wherein the telescoping mechanism comprises a lead screw nut sleeved on the driven shaft, the outside of the lead screw nut being fixedly connected to the apply lever, and a displacement sensor being provided on the apply lever that is electrically connected to the control system.
7. The variable speed, variable torque electric cylinder of claim 4 wherein the driven shaft pressure plate is disposed opposite the drive shaft pressure plate.
8. The variable speed and variable torque electric cylinder according to claim 4, wherein the driving shaft top plate, the driving shaft pressure plate, and the driven shaft top plate and the driven shaft pressure plate are each provided with a tapered surface adapted to be connected with the cylinder belt, and the driving shaft top plate is disposed opposite to the tapered surface of the driving shaft pressure plate, and the driven shaft top plate is disposed opposite to the tapered surface of the driven shaft pressure plate.
9. A construction machine comprising the variable speed and torque electric cylinder according to any one of claims 1 to 8.
10. The construction machine according to claim 9, wherein two electric cylinders are provided for the variable speed and the variable torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321440276.2U CN220234388U (en) | 2023-06-07 | 2023-06-07 | Variable-speed variable-torque electric cylinder and engineering machinery thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321440276.2U CN220234388U (en) | 2023-06-07 | 2023-06-07 | Variable-speed variable-torque electric cylinder and engineering machinery thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220234388U true CN220234388U (en) | 2023-12-22 |
Family
ID=89177924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321440276.2U Active CN220234388U (en) | 2023-06-07 | 2023-06-07 | Variable-speed variable-torque electric cylinder and engineering machinery thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220234388U (en) |
-
2023
- 2023-06-07 CN CN202321440276.2U patent/CN220234388U/en active Active
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