CN110873140B

CN110873140B - Rope transmission spring and spring combined elastic mechanism

Info

Publication number: CN110873140B
Application number: CN201911130766.0A
Authority: CN
Inventors: 邹务丰; 邹政耀; 严魏豪; 许兆怡
Original assignee: Individual
Current assignee: Dongguan Xinyilong Spring Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2021-03-05
Anticipated expiration: 2039-11-18
Also published as: CN110873140A

Abstract

The invention relates to a rope transmission spring and spring combined elastic mechanism which has the function of amplifying the torque of a spring and realizing the purpose of meeting the torque requirement required by a vehicle suspension elastic element, the variable-stiffness energy-saving suspension has a variable-stiffness function, is suitable for being used as suspensions of passenger vehicles, rail vehicles and engineering vehicles, is suitable for being used as a balance weight for a mechanical arm, is suitable for being used as an energy storage mechanism for a short-time traction device or a launching device of a vehicle, and is particularly suitable for being used as a suspension of an electric vehicle, wherein the specific structure of the variable-stiffness energy-saving suspension comprises a first side plate (2), a second side plate (9), an outer cylinder (1), a steel wire rope shaft (4), a left side spring (3), a right side spring (13), an output steel wire rope groove cylinder (11), an output connecting shaft (5), two disc bevel gears (19), a small bevel gear (20), a small worm wheel.

Description

Rope transmission spring and spring combined elastic mechanism

Technical Field

The invention relates to a rope transmission spring and spring combined elastic mechanism which has the functions of amplifying the torque of a spring and meeting the torque requirement required by a vehicle suspension elastic element, has the function of changing rigidity, is suitable for suspensions of passenger vehicles, rail vehicles and engineering vehicles, is suitable for a mechanical arm to be used as a balance weight, is suitable for a vehicle short-time traction device or a launching device to be used as an energy storage mechanism, and is particularly suitable for suspensions of electric vehicles.

Background

At present, a car mainly uses a spiral spring and a torsion bar spring as elastic elements of a suspension, the spiral spring has large volume and lower energy density, the torsion bar spring improves the energy density and can be arranged along the transverse direction and the longitudinal direction of the car frame, the volume is more favored, but the length of the torsion bar is larger, the structure of the car frame and the space of a carriage are still influenced, especially when a rear axle of the car adopts an independent suspension, the space of a rear seat and the space of a luggage case are often reduced, the energy density of the spring is large, but the torque provided by a single body is small, the inner hole of the spring is smaller, and an inner shaft is difficult to meet the strength requirement of the vehicle suspension, so the combined spring is designed to be a novel rope transmission spring combined elastic mechanism, the requirements of the suspension elastic elements of passenger cars and rail vehicles can be met, and the combined elastic mechanism has the advantages of compact structure, meanwhile, the mechanism can realize the function of changing the rigidity of the elastic mechanism on the premise of keeping the deformation of the elastic mechanism unchanged, has the performance of partial active suspension, is used for urban buses or urban rail vehicles, and ensures that the height of the vehicle body is basically unchanged when the number of passengers is changed by the rigidity changing performance. Meanwhile, the elastic mechanism can also be used for balancing the weight of a part of mechanical arms by utilizing elastic force, improving the efficiency of the mechanical arms and reducing the torque and the power of a power device for driving the mechanical arms, and can also be used as an energy storage mechanism for a vehicle short-time traction device or a launching device, so that the energy stored in a clockwork spring is quickly released in a short time, and the aim of lightening the energy storage mechanism is fulfilled.

Disclosure of Invention

The invention aims to provide a rope transmission spring and spring combined elastic mechanism aiming at the defects, which has the functions of amplifying the torque of the spring and realizing the torque requirement and the rigidity change required by a vehicle suspension elastic element, achieves the aim of reducing the volume and the weight of the suspension elastic element, can be used for balancing part of the weight of a mechanical arm, achieves the aim of reducing the running power of the mechanical arm, can be used for an energy storage mechanism of a launching or ejecting device, and achieves the aim of obtaining a high-storage-power-density mechanism; the concrete structure is composed of a side plate, a steel wire rope shaft, a spring, a steel wire rope groove drum, a steel wire rope, a bevel gear transmission mechanism, a worm gear transmission mechanism and a motor component.

In order to achieve the purpose, the invention adopts the following technical measures:

a rope-driven combined elastic mechanism with spring is characterized by that it has a mechanism which utilizes the peripheral spring and steel wire rope transmission mechanism to amplify the torque of spring to obtain large elastic torque. The spiral spring type steel wire rope winding machine is characterized by comprising side plates, a steel wire rope shaft, a spiral spring, a steel wire rope groove drum, a steel wire rope, a bevel gear transmission mechanism, a worm and gear transmission mechanism and a motor component; the first side plate (2) and the second side plate (9) are coaxially and fixedly connected and installed through an outer cylinder (1), a left spring (3) is installed on the first side plate (2), the left spring (3) is circumferentially distributed on the first side plate (2), the left spring (3) can be uniformly distributed on the first side plate (2) and can also be non-uniformly distributed according to the position requirement, an outer ring structure (6) of the left spring (3) and the first side plate (2) are installed in a positioning connection mode, an inner ring structure (7) of the left spring (3) and one end of a steel wire rope shaft (4) are installed in a positioning connection mode, the steel wire rope shaft (4) is provided with a first steel wire rope fixing groove (12), the first steel wire rope fixing groove (12) is fixed and is wound at one end of a steel wire rope (16), an output steel wire rope groove cylinder (11) is coaxially installed between the first side plate (2) and the second side plate (9), the steel wire rope winding machine is characterized in that a second steel wire rope fixing groove (10) is formed in the output steel wire rope grooved drum (11), the second steel wire rope fixing groove (10) is fixedly wound on the other end of the steel wire rope (16), the output steel wire rope grooved drum (11) is coaxially connected with and provided with an output connecting shaft (5), the output connecting shaft (5) and an inner hole (8) in the first side plate (2) are coaxially arranged, a right side spring (13) is arranged on the second side plate (9), the right side spring (13) is fixedly connected with and arranged at the other end of the steel wire rope shaft (4), the right side spring (13) is circumferentially distributed on the second side plate (9), the number of the left side spring (3) is 2-30, the specifications of the left side spring (3) are the same or different, and the number of the steel wire rope shaft (4) is 2-30, the number of the steel wire ropes (16) is 2-30, the number of the right side spring springs (13) is 2-30, the specifications of the right side spring springs (13) are the same or different, the first side plate (2) and the second side plate (9) are provided with screw holes (15), the output steel wire rope groove barrel (11) is provided with positioning holes (14), locking screws (17) and the screw holes (15) are coaxially mounted with the positioning holes (14), the left side spring (3) and the right side spring (13) have certain compression after the mechanism is mounted, in order to prevent the left side spring (3) and the right side spring (13) from loosening, the locking screws (17) are screwed into the positioning holes (14), the locking screws (17) are screwed out of the positioning holes (14) after the mechanism is mounted, and the radius ratio range of the first steel wire rope fixing grooves (12) and the second steel wire rope fixing grooves (10) is 0.05-20 The amplification factor of the elastic torque is related, the steel wire rope shafts (4) are distributed on the first side plate (2) in a rectangular mode and the second side plate (9) in a rectangular mode, the time distances of the steel wire rope shafts (4) distributed on the first side plate (2) in a rectangular mode and the time distances of the steel wire rope shafts distributed on the second side plate (9) in a rectangular mode are consistent or inconsistent, the left spring (3) and the right spring (13) are installed at two ends of each steel wire rope shaft (4) in a connected mode, the steel wire rope shafts (4) are distributed on the first side plate (2) in a rectangular mode and the second side plate (9) in a multi-layer mode, the number of the springs is increased in a multiplying mode, the numerical value of the elastic torque and the numerical value of the stored energy are effectively increased, and the steel wire rope shafts (4) of two adjacent layers are installed in a connected mode through a middle steel wire rope (18, the middle steel wire rope (18) bears a single force which is the elastic force of a spiral spring connected with the middle steel wire rope, the output connecting shaft (5) is coaxially connected with two spiral bevel gears (19), the two spiral bevel gears (19) are coaxially connected and installed, when the two spiral bevel gears (19) rotate relatively, the connected spiral spring can be compressed or released, the deformation amount of the spiral spring can be compensated, for example, when the spiral spring is compressed, the angle of the relative rotation of the two spiral bevel gears (19) compensates the angle of the compression rotation of the spiral spring, and thus the purpose of variable rigidity is achieved, because the spiral spring is different from a spiral spring, the elastic characteristic of the spiral spring is nonlinear, the two spiral bevel gears (19) are installed in a meshed mode with the same small bevel gear (20), and the small bevel gear (20) drives the two spiral bevel gears (19) to rotate when rotating, the two disc bevel gears (19) have opposite rotating directions, the small bevel gear (20) is coaxially and fixedly connected with a worm wheel (21), the small bevel gear (20) is fixedly installed by a first bearing (22), the output connecting shaft (5) is fixedly installed by a second bearing (23) and a third bearing (24), the worm wheel (21) and a worm (25) are meshed and installed, the worm (25) is fixedly installed by a fourth bearing (27) and a fifth bearing (28), the worm (25) is coaxially connected with an output shaft of an electric motor (26), the electric motor (26) can drive the worm (25) in a positive and negative rotation mode, the worm (25) drives the worm wheel (21), after the worm (25) drives the worm wheel (21) to rotate to one position, the worm wheel (21) cannot drive the worm (25) to rotate due to the self-locking between the worm (25) and the worm wheel (21), the worm wheel (21) can thus be reliably stopped in a fixed position.

The invention relates to a rope transmission spring combined elastic mechanism which is characterized in that:

1. the steel wire rope, the steel wire rope shaft and the steel wire rope groove drum are utilized, the problem that the strength of a connecting shaft of a single spring is insufficient is solved, meanwhile, the purpose of obtaining large torque can be achieved by arranging the steel wire rope shafts of the spring springs in the circumferential direction and connecting a plurality of spring springs in parallel, more rotation turns can be obtained by increasing the length of the spring springs, the rotation angle of the mechanical arm is smaller, the torque of the spring springs is amplified through gear transmission, the torque of the spring springs is accumulated and amplified through a transmission mechanism, and the torque far greater than that of the single spring can be obtained;

2. the problems of parallel connection of spring springs and elastic torque amplification are solved by using the steel wire ropes, the steel wire rope shafts and the steel wire rope grooved drums, and the steel wire rope spring has the characteristics of low manufacturing cost and long service life;

3. the steel wire rope and the steel wire rope shaft are connected with the spring in parallel, the number of the spring can be doubled when one steel wire rope groove drum is shared, and larger elastic torque and stored energy are obtained, and the spring is used as an energy storage mechanism of a launching or ejecting device and can obtain a high-storage-power-density mechanism;

4. the bevel gear transmission mechanism is provided with two disc bevel gear connecting elastic mechanisms, and when a clockwork spring is compressed or restored, the deformed number of turns is compensated through the relative rotation of the two disc bevel gears, so that the elastic mechanism with variable rigidity can be obtained on the premise that the deformation of the elastic mechanism is not changed;

5. the motor is used for driving the bevel gear transmission mechanism through the worm gear mechanism, so that the elastic mechanism can be driven to deform by the output torque of the small motor, and the elastic rigidity required by the mechanism can be kept by utilizing the self-locking of the reverse transmission of the worm gear;

6. the clockwork spring can be arranged in a rectangular mode, and is used in certain occasions with high requirements on space size, and the elastic mechanism occupies a small space.

Drawings

The invention will be further explained with reference to the drawings.

Fig. 1-10 show an example of a rope driven spring combined spring mechanism, and the practical use of the present invention is not limited to the embodiment.

Detailed Description

With reference to the attached

drawings

1, 2, 3, 4, 5 and 6, the rope-driven spring mechanism is structurally characterized in that: the first side plate 2 and the second side plate 9 are coaxially and fixedly connected and installed through the outer cylinder 1, the outer diameter of the outer cylinder 1 is 120mm, the outer diameters of the first side plate 2 and the second side plate 9 are 120mm, the first side plate 2 is provided with a left side spring 3, the second side plate 9 is provided with a right side spring 13, the thicknesses of the left side spring 3 and the right side spring 13 are 0.6mm, the width is 7mm, the outer diameter is 20mm, the inner diameter is 10mm, the left side spring 3 is circumferentially distributed on the

first side plate

2, 6 left side springs 3 are provided, the second side plate 9 is also provided with 6 right side springs 13, an outer ring structure 6 of the left side spring 3 and the first side plate 2 are positioned and installed, a inner ring structure 7 of the left side spring 3 is positioned and installed with one end of a steel wire rope shaft 4, the width of a groove formed on the steel wire shaft 4 is 0.8mm, and the diameter of the steel wire, the steel wire rope shaft 4 is provided with a first steel wire rope fixing groove 12, the width of the first steel wire rope fixing groove 12 is 2mm, the inner diameter of the first steel wire rope fixing groove 12 is 6mm, the first steel wire rope fixing groove 12 is used for fixing and winding one end of a steel wire rope 16, an output steel wire rope groove drum 11 is coaxially arranged between the first side plate 2 and the second side plate 9, the number of the output steel wire rope groove drums 11 is 6, the output steel wire rope groove drum 11 is provided with a second steel wire rope fixing groove 10 with the diameter of 60mm and the width of 2mm and the depth of 6mm, the second steel wire rope fixing groove 10 is used for fixing the other end of the wound steel wire rope 16, the output steel wire rope groove drum 11 is coaxially connected with an output connecting shaft 5, the diameter of the output connecting shaft 5 is 20mm, the output connecting shaft 5 and an inner hole 8 in the first side plate 2 are coaxially arranged, the first, the locking screw 17, the screw hole 15 and the positioning hole 14 are coaxially installed, the thread of the locking screw 17 is M8, the left spring 3 and the right spring 13 are compressed to a certain degree after the mechanism is installed, in order to prevent the left spring 3 and the right spring 13 from loosening, the locking screw 17 is screwed into the positioning hole 14, the locking screw 17 is screwed out of the positioning hole 14 after the installation is finished, and the radius ratio of the first steel wire rope fixing groove 12 to the second steel wire rope fixing groove 10 is about 6; referring to fig. 7 and 8, the wire rope shafts 4 are distributed on the first side plate 2 and the second side plate 9 in a rectangular shape, the number of the wire rope shafts 4 on the innermost layer is 9, the number of the wire rope shafts on the second layer is 16, namely, the number of the assembled spring springs is 25 on one side and 50 on both sides, the maximum torque of a single spring is 1N · m, the mechanism can obtain the elastic torque of 50N · m, and if the torque of one spring is 10N · m (spring springs of the specification are common in a drilling and milling machine), the mechanism has the elastic torque of 50N · m; referring to fig. 9 and 10, the output connecting shaft 5 is coaxially connected with two disk bevel gears 19, the two disk bevel gears 19 are coaxially connected and mounted, the two disk bevel gears 19 are meshed with the same bevel pinion 20, the number of teeth of the bevel pinion 20 and the two disk bevel gears 19 is 11/34, the bevel pinion 20 is coaxially and fixedly connected with a worm wheel 21, the worm pinion 21 and the worm 25 are meshed and mounted, the transmission ratio of the worm pinion 21 and the worm 25 is 30, the worm 25 is coaxially connected and mounted with an output shaft of the motor 26, self-locking exists between the worm 25 and the worm wheel 21, the worm wheel 21 cannot drive the worm 25 to rotate, and therefore the worm wheel 21 can be reliably stopped at a fixed position.

Claims

1. A rope transmission spring combination elastic mechanism has a function of realizing large elastic torque by combining spring springs, and is characterized in that a first side plate (2) and a second side plate (9) are installed through an outer cylinder (1) in a coaxial fixed connection mode, a left side spring (3) is installed on the first side plate (2), the left side spring (3) is circumferentially distributed on the first side plate (2), an outer ring structure (6) of the left side spring (3) and the first side plate (2) are installed in a positioning connection mode, an inner ring structure (7) of the left side spring (3) and one end of a steel wire rope shaft (4) are installed in a positioning connection mode, the steel wire rope shaft (4) is provided with a first fixed groove steel wire rope (12), and an output steel wire rope groove cylinder (11) is coaxially installed between the first side plate (2) and the second side plate (9), have second wire rope fixed slot (10) on output wire rope groove section of thick bamboo (11), first wire rope fixed slot (12) with be connected with wire rope (16) between second wire rope fixed slot (10), output wire rope groove section of thick bamboo (11) coaxial coupling installation output connecting axle (5), output connecting axle (5) with hole (8) coaxial arrangement in first curb plate (2), right side clockwork spring (13) is installed in second curb plate (9), right side clockwork spring (13) with the installation is connected in the other end location of wire rope axle (4), right side clockwork spring (13) are in circumference distributes on second curb plate (9).

2. A cord-driven clockwork spring combined elastic mechanism according to claim 1, characterized in that the number of said left-side clockwork springs (3) is 2-30, the number of said wire rope shafts (4) is 2-30, and the number of said wire ropes (16) is 2-30.

3. A cord-driven clockwork spring combination elastic mechanism according to claim 1, characterized in that the number of said right-hand clockwork springs (13) is 2-30.

4. A cord driven clockwork spring combination spring mechanism according to claim 1, characterized in that said first side plate (2), said second side plate (9) have screw holes (15), said output cord drum (11) has positioning holes (14), and a locking screw (17) is coaxially mounted with said screw holes (15) and said positioning holes (14).

5. A cord driven clockwork spring combination elastic mechanism according to claim 1, characterized in that the radius ratio of said first wire rope fixing groove (12) and said second wire rope fixing groove (10) ranges from 0.05 to 20.

6. A cord-driven spring-combined elastic mechanism according to claim 1, characterized in that said wire rope shaft (4) is distributed rectangularly on said first side plate (2) and on said second side plate (9), said wire rope shaft (4) being mounted at both ends thereof with said left side spring (3) and said right side spring (13) in a connected manner.

7. The rope-driven spring combined elastic mechanism according to claim 1, characterized in that the wire rope shafts (4) are distributed on the first side plate (2) in a rectangular shape and the second side plate (9) in a multi-layer rectangular shape, the number of layers is 2-20, and two adjacent layers of the wire rope shafts (4) are connected and installed by an intermediate wire rope (18).

8. A rope-driven clockwork spring combined elastic mechanism according to claim 1, characterized in that 2 said output connecting shafts (5) are coaxially connected with two disc bevel gears (19), said two disc bevel gears (19) are coaxially connected and installed, said two disc bevel gears (19) and a same small bevel gear (20) are engaged and installed, said small bevel gear (20) is coaxially connected and installed with a worm wheel (21), said small bevel gear (20) is fixedly installed by a first bearing (22), said output connecting shaft (5) is fixedly installed by a second bearing (23) and a third bearing (24), said worm wheel (21) and a worm screw (25) are engaged and installed, said worm screw (25) is fixedly installed by a fourth bearing (27) and a fifth bearing (28), said worm screw (25) is coaxially connected and installed with an output shaft of a motor (26).