CN110425026B - Linear pressure spring unit - Google Patents

Linear pressure spring unit Download PDF

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Publication number
CN110425026B
CN110425026B CN201910726229.6A CN201910726229A CN110425026B CN 110425026 B CN110425026 B CN 110425026B CN 201910726229 A CN201910726229 A CN 201910726229A CN 110425026 B CN110425026 B CN 110425026B
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China
Prior art keywords
spring
pushing
tubular
tubular spring
module
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CN201910726229.6A
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Chinese (zh)
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CN110425026A (en
Inventor
檀卓鸣
石宏扬
李晓垚
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YANTAI ZHUOYUE ELECTRONIC HARDWARE CO.,LTD.
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Yantai Zhuoyue Electronic Hardware Co ltd
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Priority to CN201910726229.6A priority Critical patent/CN110425026B/en
Publication of CN110425026A publication Critical patent/CN110425026A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08Other arrangements or adaptations of exhaust conduits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F3/00Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/02Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
    • F16F3/04Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs

Abstract

The invention belongs to the technical field of springs, and particularly relates to a linear pressure spring unit which comprises a cylinder, a main supporting spring, a first tubular spring, a second tubular spring, a first pushing module, a second pushing module, a third pushing module, a main supporting module and a supporting plate, wherein the first tubular spring is arranged in the cylinder; the upper end of the main supporting spring is fixedly connected with the lower end face of the supporting plate, and the lower end of the main supporting spring is sleeved with a first tubular spring and a second tubular spring from inside to outside respectively; the first pushing module is used for pushing the first tubular spring to slide along the spiral direction of the main supporting spring; the second pushing module and the third pushing module jointly realize pushing the second tubular spring to slide along the spiral direction of the first tubular spring; the main support module is used for supporting and fixing a main support spring, a first tubular spring and a second tubular spring which extend out of the barrel body; the linear elastic force adjustment of the pressure spring unit is realized by adjusting the number of the pressure springs.

Description

Linear pressure spring unit
Technical Field
The invention belongs to the technical field of springs, and particularly relates to a linear pressure spring unit.
Background
When the automobile runs, the temperature of the exhaust pipe is very high due to the combustion of fuel oil in each cylinder, and when the automobile runs on a highway with a level road, the temperature of the exhaust pipe can reach 300-400 ℃, when the automobile runs on a highway with a high speed, the temperature of the exhaust pipe can reach 400-500 ℃, and when the automobile runs on a mountain road, the temperature of the exhaust pipe can reach 500-650 ℃. The spring is required to be used on the automobile exhaust pipe, the temperature of the automobile exhaust pipe can be transferred to the spring at the bottom of the exhaust pipe, certain heat is dissipated in the process, and at the moment, the spring needs to keep good performance for a long time in an environment with the working temperature of 550 ℃.
The spring is generally made of spring steel, the types of the spring are complex and various, and mainly include a spiral spring, a volute spiral spring, a plate spring, a special-shaped spring and the like according to the shape, wherein F is kx, F is elastic force, k is stiffness coefficient, and x is the length of the spring, in general, if the length of the spring is fixed, the elastic force is fixed, and when the elasticity of the spring needs to be changed, the spring needs to be replaced, so that unnecessary troubles are caused.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a linear pressure spring unit. The linear elastic force adjustment of the pressure spring unit is realized mainly by adjusting the number of the compressed springs; furthermore, the pressure spring unit can realize high-performance shock absorption on the exhaust pipe of the vehicle under different road conditions when the vehicle runs, and reduce vibration damage to the operation of the exhaust pipe caused by vehicle bumping.
The technical scheme adopted by the invention for solving the technical problems is as follows: the linear pressure spring unit comprises a cylinder, a main supporting spring, a first tubular spring, a second tubular spring, a first pushing module, a second pushing module, a third pushing module, a main supporting module and a supporting plate; a main supporting spring is arranged in the cylinder body; the lower end of the main supporting spring is fixed at the bottom end of the barrel, the upper end of the main supporting spring is fixedly connected with the lower end surface of the supporting plate, and the first tubular spring and the second tubular spring are respectively sleeved at the lower end of the main supporting spring from inside to outside; the first tubular spring is connected with the main supporting spring in a sliding mode, a first pushing module is arranged on the outer side of the first tubular spring and used for pushing the first tubular spring to slide along the spiral direction of the main supporting spring; the second tubular spring is connected with the first tubular spring in a sliding manner, a second pushing module is arranged on the outer side of the second tubular spring and is arranged below the first pushing module; a third pushing module is arranged above the first pushing module; the second pushing module and the third pushing module jointly realize pushing the second tubular spring to slide along the spiral direction of the first tubular spring; a main supporting module is arranged on the central axis in the barrel body and used for supporting and fixing a main supporting spring, a first tubular spring and a second tubular spring which extend out of the barrel body; the first tubular spring is longer than the second tubular spring by one screw pitch;
when the automobile exhaust pipe support device works, the pressure spring unit is arranged below an exhaust pipe of an automobile, the exhaust pipe is supported through the pressure spring unit, the exhaust pipe is buffered while the exhaust pipe is supported through the pressure spring unit, and meanwhile, the pressure spring unit can adjust the linear elasticity of the pressure spring by adjusting the number of the compressed springs according to different road conditions; specifically, firstly, the main support module releases a supporting and fixing effect on the main support spring, then the first push module drives the first tubular spring to slide upwards along the spiral direction of the main support spring, in the process, if the push directions of the second push module and the first push module are different, the second push module enables the second tubular spring to be in a static state, only the first tubular spring slides to the upper end of the main support spring, and when the main support module supports and fixes the main support spring again, the main support spring and the first tubular spring jointly play a supporting and buffering effect on the pressure spring unit, so that a smooth road condition is realized; if the pushing direction of the second pushing module is the same as that of the first pushing module, the second pushing module enables the second tubular spring to slide upwards along the spiral direction of the main supporting spring along with the first tubular spring, at the moment, the first tubular spring and the second tubular spring slide to the upper end of the main supporting spring together, and then when the main supporting spring is supported and fixed again by the main supporting module, the pressure spring unit is supported and buffered by the main supporting spring, the first tubular spring and the second tubular spring together, so that a bumpy road condition is realized; the pressure spring unit can realize high-performance shock absorption on the exhaust pipe of the vehicle under different road conditions when the vehicle runs, and reduce vibration damage to the operation of the exhaust pipe caused by vehicle bumping; when the second tubular spring needs to be retracted into the cylinder, the second pushing module and the third pushing module are required to push reversely together, and the second tubular spring can be pushed downwards into the cylinder along the spiral direction of the main supporting spring.
Preferably, the main supporting module comprises a spiral supporting plate, a rotary motor, a supporting column and a conical spring; the large-diameter end of the conical spring is fixed at the center of the bottom surface of the cylinder body, the small-diameter end of the conical spring is sleeved at the lower end of the supporting column, and the conical spring is fixedly connected with the supporting column; the upper end of the supporting column is fixedly connected with the lower end of the rotating motor; a motor shaft of the rotating motor is connected with a mounting hole in the center of the rotating support plate in an interference fit manner; the rotary supporting disk is in threaded connection with the inner wall of the upper end of the cylinder body, and the upper end face of the rotary supporting disk is fixedly connected with the spiral supporting plate; the upper surface of the spiral supporting plate is a spiral surface, and the helix angle of the spiral surface is the same as that of the main supporting spring; when the device works, the rotating motor drives the rotating support plate to rotate, so that the rotating support plate moves upwards while rotating through threaded connection, and further drives the spiral support plate to be in contact with the surfaces of the main support spring, the first tubular spring or the second tubular spring, and further the support and the fixation of the spiral support plate are realized; conical spring is stretched at this in-process, and then satisfies the demand that rotates the backup pad rebound, and conical spring's slight deformation simultaneously for the instantaneous starting torque who rotates the motor reduces, and then has improved the start-up effect that rotates the motor, has improved the life who rotates the motor.
Preferably, the first pushing module comprises a motor, a driving gear, a pushing gear ring and a pushing friction body; the motor is fixedly connected to the outer cylindrical surface of the cylinder, and the end part of a motor shaft of the motor is fixedly connected in a central mounting hole of the driving gear; the driving gear penetrates through the through groove in the cylindrical surface of the cylinder body and then is meshed with gear teeth on the outer cylindrical surface of the pushing gear ring; the middle part of the outer cylindrical surface of the pushing gear ring is provided with the gear teeth, and the cylindrical surfaces on the upper side and the lower side of the gear teeth are rotationally connected with the inner wall of the cylinder body; an annular pushing friction body is arranged on the inner cylindrical surface of the pushing gear ring; the inner surface of the pushing friction body can be in contact with the outer surface of the first tubular spring; during operation, a motor of the first pushing module drives a driving gear to rotate, the driving gear drives the pushing gear ring to rotate, and then the pushing friction body on the inner side of the pushing gear ring is driven to rotate, the friction force pushing friction body drives the first tubular spring to rotate along the tangential direction, and therefore the first tubular spring slides along the spiral direction of the main supporting spring.
Preferably, the structure of the second pushing module is the same as that of the first pushing module.
Preferably, the third pushing module and the first pushing module have the same structure.
Preferably, lubricating oil is filled in the cylinder; the during operation, when the propelling movement direction of propelling movement module No. two is different with propelling movement module No. one, then No. two propelling movement modules make No. two tubular spring be in quiescent condition, this moment, only a tubular spring upwards slides along the helical direction of main tributary supporting spring, this moment, produce the negative pressure in the cavity that the lower extreme of a tubular spring and No. two tubular spring enclose, and then realize sucking into this negative pressure intracavity with the lubricating oil in the barrel, and then make lubricating oil get into the gap between a tubular spring and No. two tubular springs in, and then carry out abundant lubrication to both.
Preferably, the upper end of the main supporting spring is sleeved with a sealing stop block; the sealing stop block is used for sealing the upper ends of the first tubular spring and the second tubular spring; the first tubular spring and the second tubular spring which slide to the upper end of the main supporting spring are sealed at the end parts by the sealing stop blocks, and lubricating oil between gaps of the first tubular spring and the second tubular spring is prevented from flowing out of the end parts.
Preferably, the main supporting spring, the first tubular spring and the second tubular spring are all high-temperature resistant springs.
The invention has the following beneficial effects:
1. the linear elastic force adjustment of the pressure spring unit is realized by adjusting the number of the compressed springs; if the pushing directions of the second pushing module and the first pushing module are different, only the first tubular spring slides to the upper end of the main supporting spring, and the main supporting spring and the first tubular spring jointly play a supporting and buffering role in the pressure spring unit, so that a relatively gentle road condition is realized; if the pushing direction of the second pushing module is the same as that of the first pushing module, the second pushing module enables the second tubular spring to slide upwards along the spiral direction of the main supporting spring along with the first tubular spring, and the pressure spring unit plays a supporting and buffering role by the main supporting spring, the first tubular spring and the second tubular spring together, so that a bumpy road condition is realized; the pressure spring unit can realize high-performance shock absorption on the exhaust pipe of the vehicle under different road conditions when the vehicle runs, and reduce vibration damage to the operation of the exhaust pipe caused by vehicle bumping;
2. the rotary support plate rotates and moves upwards through threaded connection, so that the spiral support plate is driven to be in contact with the surfaces of the main support spring, the first tubular spring or the second tubular spring, and the support and the fixation of the spiral support plate are realized; in the process, the conical spring is stretched, so that the requirement that the rotating support plate moves upwards is met, and meanwhile, the conical spring slightly deforms, so that the instantaneous starting torque of the rotating motor is reduced, the starting effect of the rotating motor is improved, and the service life of the rotating motor is prolonged;
3. when the pushing directions of the second pushing module and the first pushing module are different, the second pushing module enables the second tubular spring to be in a static state, only the first tubular spring slides upwards along the spiral direction of the main supporting spring, and negative pressure is generated in a cavity formed by the lower end of the first tubular spring and the inner cavity of the second tubular spring, so that lubricating oil in the cylinder is sucked into the negative pressure cavity, the lubricating oil enters a gap between the first tubular spring and the second tubular spring, and the first tubular spring and the second tubular spring are fully lubricated.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structural connections of the present invention;
FIG. 3 is a table showing the yield strengths of the main support spring, the first tubular spring and the second tubular spring under high temperature conditions in accordance with the present invention;
in the figure: barrel 1, main tributary supporting spring 2, sealed dog 21, tubular spring 3, No. two tubular spring 4, propelling movement module 5, drive gear 51, propelling movement ring gear 52, No. two propelling movement modules 6, No. three propelling movement module 7, main tributary supporting module 8, spiral supporting plate 81, rotation supporting disk 82, rotation motor 83, support column 84, conical spring 85, backup pad 9.
Detailed Description
A linear compression spring unit according to an embodiment of the present invention will be described below with reference to fig. 1 and 2.
As shown in fig. 1 and 2, the linear pressure spring unit according to the present invention includes a cylinder 1, a main support spring 2, a first tubular spring 3, a second tubular spring 4, a first pushing module 5, a second pushing module 6, a third pushing module 7, a main support module 8, and a support plate 9; a main supporting spring 2 is arranged in the cylinder body 1; the lower end of the main supporting spring 2 is fixed at the bottom end of the barrel 1, the upper end of the main supporting spring 2 is fixedly connected with the lower end face of the supporting plate 9, and the lower end of the main supporting spring 2 is sleeved with a first tubular spring 3 and a second tubular spring 4 from inside to outside respectively; the first tubular spring 3 is in sliding connection with the main supporting spring 2, a first pushing module 5 is arranged on the outer side of the first tubular spring 3, and the first pushing module 5 is used for pushing the first tubular spring 3 to slide along the spiral direction of the main supporting spring 2; the second tubular spring 4 is connected with the first tubular spring 3 in a sliding manner, a second pushing module 6 is arranged on the outer side of the second tubular spring 4, and the second pushing module 6 is arranged below the first pushing module 5; a third pushing module 7 is arranged above the first pushing module 5; the second pushing module 6 and the third pushing module 7 jointly realize pushing the second tubular spring 4 to slide along the spiral direction of the first tubular spring 3; a main supporting module 8 is arranged on the central axis in the cylinder body 1, and the main supporting module 8 is used for supporting and fixing a main supporting spring 2, a first tubular spring 3 and a second tubular spring 4 which extend out of the cylinder body 1; the first tubular spring 3 is longer than the second tubular spring 4 by one screw pitch;
when the automobile exhaust pipe support device works, the pressure spring unit is arranged below an exhaust pipe of an automobile, the exhaust pipe is supported through the pressure spring unit, the exhaust pipe is buffered while the exhaust pipe is supported through the pressure spring unit, and meanwhile, the pressure spring unit can adjust the linear elasticity of the pressure spring by adjusting the number of the compressed springs according to different road conditions; specifically, firstly, the main support module 8 releases the supporting and fixing effect on the main support spring 2, then the first push module 5 drives the first tubular spring 3 to slide upwards along the spiral direction of the main support spring 2, in the process, if the push directions of the second push module 6 and the first push module 5 are different, the second push module 6 enables the second tubular spring 4 to be in a static state, only the first tubular spring 3 slides to the upper end of the main support spring 2, and then when the main support module 8 supports and fixes the main support spring 2 again, the main support spring 2 and the first tubular spring 3 jointly play a supporting and buffering effect on the pressure spring unit, so that a relatively gentle road condition is realized; if the pushing direction of the second pushing module 6 is the same as that of the first pushing module 5, the second pushing module 6 enables the second tubular spring 4 to slide upwards along the spiral direction of the main supporting spring 2 along with the first tubular spring 3, at the moment, the first tubular spring 3 and the second tubular spring 4 slide to the upper end of the main supporting spring 2 together, and when the main supporting module 8 supports and fixes the main supporting spring 2 again, the main supporting spring 2, the first tubular spring 3 and the second tubular spring 4 jointly play a role in supporting and buffering the pressure spring unit, so that a bumpy road condition is realized; the pressure spring unit can realize high-performance shock absorption on the exhaust pipe of the vehicle under different road conditions when the vehicle runs, and reduce vibration damage to the operation of the exhaust pipe caused by vehicle bumping; when the second tubular spring 4 needs to be retracted into the cylinder body 1, the second pushing module 6 and the third pushing module 7 need to be pushed reversely together, so that the second tubular spring 4 can be pushed downwards into the cylinder body 1 along the spiral direction of the main supporting spring 2.
As shown in fig. 1 and 2, the main support module 8 includes a spiral support plate 81, a rotation support plate 82, a rotation motor 83, a support column 84, and a conical spring 85; the large-diameter end of the conical spring 85 is fixed at the center of the bottom surface of the cylinder 1, the small-diameter end of the conical spring 85 is sleeved at the lower end of the supporting column 84, and the conical spring 85 is fixedly connected with the supporting column 84; the upper end of the supporting column 84 is fixedly connected with the lower end of the rotating motor 83; a motor shaft of the rotating motor 83 is connected with a mounting hole in the center of the rotating support plate 82 in an interference fit manner; the rotary supporting disk 82 is in threaded connection with the inner wall of the upper end of the cylinder body 1, and the upper end face of the rotary supporting disk 82 is fixedly connected with the spiral supporting plate 81; the upper surface of the spiral supporting plate 81 is a spiral surface, and the spiral angle of the spiral surface is the same as the spiral angle of the main supporting spring 2; when the device works, the rotating motor 83 drives the rotating support plate 9 to rotate, so that the rotating support plate 9 rotates and moves upwards through threaded connection, and further the spiral support plate 81 is driven to be in contact with the surfaces of the main support spring 2, the first tubular spring 3 or the second tubular spring 4, and further the support and fixation of the main support spring 2, the first tubular spring 3 or the second tubular spring 4 are realized; conical spring 85 is stretched in this process, and then satisfies the demand that the backup pad 9 moved upwards, and conical spring 85's slight deformation simultaneously for the instant starting torque who rotates motor 83 reduces, and then has improved the start-up effect that rotates motor 83, has improved the life that rotates motor 83.
As shown in fig. 1 and 2, the first pushing module 5 comprises a motor, a driving gear 51, a pushing gear ring 52 and a pushing friction body; the motor is fixedly connected to the outer cylindrical surface of the barrel body 1, and the end part of a motor shaft of the motor is fixedly connected in a central mounting hole of the driving gear 51; the driving gear 51 penetrates through the through groove on the cylindrical surface of the cylinder body 1 and then is meshed with gear teeth on the outer cylindrical surface of the pushing gear ring 52; the gear teeth are arranged in the middle of the outer cylindrical surface of the pushing gear ring 52, and the cylindrical surfaces on the upper side and the lower side of the gear teeth are rotationally connected with the inner wall of the barrel 1; an annular pushing friction body is arranged on the cylindrical surface of the inner side of the pushing gear ring 52; the inner surface of the pushing friction body can be in contact with the outer surface of the first tubular spring 3; during operation, the motor of the first pushing module 5 drives the driving gear 51 to rotate, the driving gear 51 drives the pushing gear ring 52 to rotate, and then drives the pushing friction body on the inner side of the pushing gear ring 52 to rotate, the first tubular spring 3 is driven to rotate along the tangential direction by the friction force pushing friction body, and then the first tubular spring 3 slides along the spiral direction of the main supporting spring 2.
As shown in fig. 1 and fig. 2, the second push module 6 has the same structure as the first push module 5.
As shown in fig. 1 and 2, the third push module 7 has the same structure as the first push module 5.
As shown in fig. 1 and 2, the cylinder 1 is filled with lubricating oil; during operation, when propelling movement module 6 is different with the propelling movement direction of propelling movement module 5 No. two, then propelling movement module 6 makes No. two tubular spring 4 be in quiescent condition, this moment, only tubular spring 3 upwards slides along the helical direction of main tributary supporting spring 2, this moment, produce the negative pressure in the cavity that the lower extreme of tubular spring 3 and No. two tubular spring 4's inner chamber enclose, and then realize sucking into this negative pressure intracavity with the lubricating oil in the barrel 1, and then make lubricating oil get into the gap between tubular spring 3 and No. two tubular spring 4 in, and then carry out abundant lubrication to both.
As shown in fig. 1 and 2, the upper end of the main supporting spring 2 is sleeved with a sealing stop 21; the sealing stop 21 is used for sealing the upper ends of the first tubular spring 3 and the second tubular spring 4; the first tubular spring 3 and the second tubular spring 4, which slide to the upper end of the main support spring 2, are end-sealed by the seal stopper 21, preventing the lubricating oil between the gaps of the first tubular spring 3 and the second tubular spring 4 from flowing out from the ends.
As shown in fig. 1 to 3, the main support spring 2, the first tubular spring 3 and the second tubular spring 4 are all high temperature resistant springs; during operation, the automobile exhaust pipe can transmit the temperature to the main supporting spring 2, the first tubular spring 3 and the second tubular spring 4 at the bottom of the exhaust pipe, and certain heat is dissipated in the process, at the moment, the main supporting spring 2, the first tubular spring 3 and the second tubular spring 4 all need to keep good performance for a long time in an environment with the working temperature of 550 ℃, so that the automobile exhaust pipe can work for a long time in the environment with the temperature of 550 ℃ by testing the yield strength of the main supporting spring 2, the first tubular spring 3 and the second tubular spring 4 at high temperature.
The specific working mode is as follows:
during operation, firstly, the main supporting module 8 releases the supporting and fixing effect on the main supporting spring 2, then the first pushing module 5 drives the first tubular spring 3 to slide upwards along the spiral direction of the main supporting spring 2, in the process, if the pushing directions of the second pushing module 6 and the first pushing module 5 are different, the second pushing module 6 enables the second tubular spring 4 to be in a static state, only the first tubular spring 3 slides to the upper end of the main supporting spring 2, and then when the main supporting module 8 supports and fixes the main supporting spring 2 again, the main supporting spring 2 and the first tubular spring 3 jointly play a supporting and buffering effect on the pressure spring unit, so that a relatively gentle road condition is realized; if the pushing direction of the second pushing module 6 is the same as that of the first pushing module 5, the second pushing module 6 enables the second tubular spring 4 to slide upwards along the spiral direction of the main supporting spring 2 along with the first tubular spring 3, at the moment, the first tubular spring 3 and the second tubular spring 4 slide to the upper end of the main supporting spring 2 together, and when the main supporting module 8 supports and fixes the main supporting spring 2 again, the main supporting spring 2, the first tubular spring 3 and the second tubular spring 4 jointly play a role in supporting and buffering the pressure spring unit, so that a bumpy road condition is realized; the pressure spring unit can realize high-performance shock absorption on the exhaust pipe of the vehicle under different road conditions when the vehicle runs, and reduce vibration damage to the operation of the exhaust pipe caused by vehicle bumping; when the second tubular spring 4 needs to be retracted into the cylinder body 1, the second pushing module 6 and the third pushing module 7 need to be pushed reversely together, so that the second tubular spring 4 can be pushed downwards into the cylinder body 1 along the spiral direction of the main supporting spring 2.
In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (1)

1. A linear compression spring unit is characterized in that: the pressure spring unit comprises a cylinder body (1), a main supporting spring (2), a first tubular spring (3), a second tubular spring (4), a first pushing module (5), a second pushing module (6), a third pushing module (7), a main supporting module (8) and a supporting plate (9); a main supporting spring (2) is arranged in the cylinder body (1); the lower end of the main supporting spring (2) is fixed at the bottom end of the barrel body (1), the upper end of the main supporting spring (2) is fixedly connected with the lower end face of the supporting plate (9), and the lower end of the main supporting spring (2) is sleeved with a first tubular spring (3) and a second tubular spring (4) from inside to outside respectively; the first tubular spring (3) is connected with the main supporting spring (2) in a sliding mode, a first pushing module (5) is arranged on the outer side of the first tubular spring (3), and the first pushing module (5) is used for pushing the first tubular spring (3) to slide along the spiral direction of the main supporting spring (2); the second tubular spring (4) is connected with the first tubular spring (3) in a sliding mode, a second pushing module (6) is arranged on the outer side of the second tubular spring (4), and the second pushing module (6) is arranged below the first pushing module (5); a third pushing module (7) is arranged above the first pushing module (5); the second pushing module (6) and the third pushing module (7) jointly realize pushing of the second tubular spring (4) to slide along the spiral direction of the first tubular spring (3); a main supporting module (8) is arranged on the central axis in the cylinder body (1), and the main supporting module (8) is used for supporting and fixing a main supporting spring (2), a first tubular spring (3) and a second tubular spring (4) which extend out of the cylinder body (1); the first tubular spring (3) is longer than the second tubular spring (4) by one screw pitch;
the main support module (8) comprises a spiral support plate (81), a rotary support plate (82), a rotary motor (83), a support column (84) and a conical spring (85); the large-diameter end of the conical spring (85) is fixed at the center of the bottom surface of the cylinder body (1), the small-diameter end of the conical spring (85) is sleeved at the lower end of the supporting column (84), and the conical spring (85) is fixedly connected with the supporting column (84); the upper end of the supporting column (84) is fixedly connected with the lower end of the rotating motor (83); a motor shaft of the rotating motor (83) is connected with a mounting hole in the center of the rotating support plate (82) in an interference fit manner; the rotary supporting disk (82) is in threaded connection with the inner wall of the upper end of the cylinder body (1), and a spiral supporting plate (81) is fixedly connected to the upper end face of the rotary supporting disk (82); the upper surface of the spiral supporting plate (81) is a spiral surface, and the spiral angle of the spiral surface is the same as the spiral angle of the main supporting spring (2);
the first pushing module (5) comprises a motor, a driving gear (51), a pushing gear ring (52) and a pushing friction body; the motor is fixedly connected to the outer cylindrical surface of the barrel body (1), and the end part of a motor shaft of the motor is fixedly connected into a central mounting hole of the driving gear (51); the driving gear (51) penetrates through a through groove in the cylindrical surface of the barrel body (1) and then is meshed with gear teeth on the outer cylindrical surface of the pushing gear ring (52); the middle part of the outer cylindrical surface of the pushing gear ring (52) is provided with the gear teeth, and the cylindrical surfaces at the upper side and the lower side of the gear teeth are rotationally connected with the inner wall of the barrel body (1); an annular pushing friction body is arranged on the cylindrical surface of the inner side of the pushing gear ring (52); the inner surface of the pushing friction body can be in contact with the outer surface of the first tubular spring (3);
the structure of the second pushing module (6) is the same as that of the first pushing module (5);
the third pushing module (7) and the first pushing module (5) have the same structure;
lubricating liquid is filled in the cylinder body (1);
a sealing stop block (21) is sleeved at the upper end of the main supporting spring (2); the sealing stop block (21) is used for sealing the upper ends of the first tubular spring (3) and the second tubular spring (4);
the main supporting spring (2), the first tubular spring (3) and the second tubular spring (4) are all high-temperature resistant springs.
CN201910726229.6A 2019-08-07 2019-08-07 Linear pressure spring unit Active CN110425026B (en)

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CN110425026B true CN110425026B (en) 2021-11-16

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104895978A (en) * 2015-06-18 2015-09-09 无锡众扬金属制品有限公司 Multilayer buffer spring
CN205166140U (en) * 2015-11-13 2016-04-20 浙江普尔尼机电有限公司 Shock absorption electric welding machine
KR20190008641A (en) * 2017-07-17 2019-01-25 한국기계연구원 Absorber for Apparatus
CN109386666A (en) * 2017-08-09 2019-02-26 扬中奇佩智能装配科技有限公司 A kind of adjustable spring support hanging frame

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104895978A (en) * 2015-06-18 2015-09-09 无锡众扬金属制品有限公司 Multilayer buffer spring
CN205166140U (en) * 2015-11-13 2016-04-20 浙江普尔尼机电有限公司 Shock absorption electric welding machine
KR20190008641A (en) * 2017-07-17 2019-01-25 한국기계연구원 Absorber for Apparatus
CN109386666A (en) * 2017-08-09 2019-02-26 扬中奇佩智能装配科技有限公司 A kind of adjustable spring support hanging frame

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