[go: up one dir, main page]

CN110439950B - Flexible body-building air spring and pressure regulating system - Google Patents

Flexible body-building air spring and pressure regulating system Download PDF

Info

Publication number
CN110439950B
CN110439950B CN201910625031.9A CN201910625031A CN110439950B CN 110439950 B CN110439950 B CN 110439950B CN 201910625031 A CN201910625031 A CN 201910625031A CN 110439950 B CN110439950 B CN 110439950B
Authority
CN
China
Prior art keywords
piston
piston rod
quick
inner cylinder
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910625031.9A
Other languages
Chinese (zh)
Other versions
CN110439950A (en
Inventor
应端忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Yili Industrial Co.,Ltd.
Original Assignee
NINGBO YILI SHOCK ABSORBER CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NINGBO YILI SHOCK ABSORBER CO Ltd filed Critical NINGBO YILI SHOCK ABSORBER CO Ltd
Priority to CN201910625031.9A priority Critical patent/CN110439950B/en
Publication of CN110439950A publication Critical patent/CN110439950A/en
Application granted granted Critical
Publication of CN110439950B publication Critical patent/CN110439950B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/008—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using hydraulic or pneumatic force-resisters
    • A63B21/0085—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using hydraulic or pneumatic force-resisters using pneumatic force-resisters
    • A63B21/0087—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using hydraulic or pneumatic force-resisters using pneumatic force-resisters of the piston-cylinder type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/0209—Telescopic
    • F16F9/0227—Telescopic characterised by the piston construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/0209—Telescopic
    • F16F9/0281—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/0209—Telescopic
    • F16F9/0281—Details
    • F16F9/029—Details electrical, e.g. connections or contacts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3264—Arrangements for indicating, e.g. fluid level; Arrangements for checking dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3285—Details for filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/368—Sealings in pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/369—Sealings for elements other than pistons or piston rods, e.g. valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
    • F16F9/5123—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity responsive to the static or steady-state load on the damper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/12—Fluid damping
    • F16F2222/126—Fluid damping using gases

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)

Abstract

The invention relates to a body-building apparatus, aiming at the problem that the inflation quantity in a cylinder of the existing gas spring is fixed and unchanged, the invention discloses a flexible body-building gas spring and a pressure regulating system, which comprise a piston rod assembly, a double-cylinder assembly, a digital control system and a ventilation control system, wherein the double-cylinder assembly comprises an inner cylinder, an outer cylinder, an upper end gland, an upper end cover and a lower end cover, and the inner cylinder is positioned in the outer cylinder; the piston rod assembly comprises a piston rod and a piston; the digital control system comprises a pressure sensor and a controller, and the controller is fixedly connected to the pressure sensor; the ventilation control system comprises a three-position five-way electromagnetic valve and a high-pressure inflator pump, and the controller is connected with the high-pressure inflator pump and the three-position five-way electromagnetic valve at the same time. The invention can stabilize the system pressure and save space; the pressure value of the gas spring can be stabilized at a value by real-time detection and control; the buffer effect is good, and the protection effect on the body-building trainer is good.

Description

Flexible body-building air spring and pressure regulating system
Technical Field
The invention relates to a body-building apparatus, in particular to a flexible body-building gas spring and a pressure regulating system.
Background
The gas spring becomes a popular accessory in the field of industrial accessories by virtue of functions of supporting, buffering, braking, height adjustment, angle adjustment and the like. Particularly, the gas spring with inert gas as the filling medium in the cylinder is widely applied, so that the insecurity caused by oil as the filling medium is avoided, and the influence of the environmental temperature is large. At present, the gas spring is applied to the field of fitness equipment more and more due to good buffering performance. For example, a "body-building apparatus capable of performing a pushing exercise" disclosed in the chinese patent document, which is disclosed under the publication No. CN200520065389.4, comprises a load-bearing frame (1), a support bed (6) placed under the load-bearing frame (1), and a weight for lifting disposed on the load-bearing frame (1), wherein the weight for lifting is a pair of air springs (3) hung on horizontal top rods (2) of the load-bearing frame (1), the other ends of the air springs (3) are connected to push rods (9) disposed in sliding grooves (10) of both side rods of the load-bearing frame (1), and a foot-pedal baffle (7) is disposed at one end of the support bed (6) away from the load-bearing frame (1). A novel multifunctional body-building apparatus disclosed in Chinese patent literature, the publication number of which is CN201820729207.6, comprises a base (1) and a column (2), the method is characterized in that: a fixing plate (3) is arranged at the central part of the base (1), a screw hole (4) is arranged at the top of the fixing plate (3), the screw hole (4) is internally fixed with one end of a gas spring (5) through a bolt, the other end of the gas spring (5) is connected with the bottom of a vertical plate (6) through a bolt, a pulley A (7) is arranged at the central part of the vertical plate (6), a pulley block (8) is arranged at the top part of the upright post (2), the pulley block (8) is connected with the pulley A (7) through a steel wire rope (9), the tail end of the steel wire rope (9) extends out through a pulley B (11) arranged at the side part of the upright post (2), a sensor is arranged above the pulley block (8) at the top end of the upright post (2).
The gas spring has the disadvantages that the gas spring is a single-cylinder gas spring, the inflation quantity in the cylinder is fixed and is only used for buffering.
Disclosure of Invention
The invention aims to overcome the problem that the air inflation quantity in an air cylinder in the prior art is fixed and unchanged, and provides a flexible body-building air spring and a pressure regulating system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a flexible fitness gas spring comprises a piston rod assembly and a double-cylinder assembly, wherein the double-cylinder assembly comprises an inner cylinder, an outer cylinder, an upper end gland, an upper end cover and a lower end cover; the piston rod assembly comprises a piston rod and a piston, the piston is detachably connected to the inner end of the piston rod, the piston is connected to the inner side of the inner cylinder in a sliding mode, the inner cylinder is divided into an upper cavity of the inner cylinder and a lower cavity of the inner cylinder by the piston, the piston rod penetrates through the upper end cover and the upper end gland and is connected with the upper end cover and the upper end gland in a sliding mode, and the piston rod is coaxial with the inner cylinder; the upper end cover is provided with a ventilation hole and a communication hole, one end of the ventilation hole is connected with the upper end of the outer cylinder, the other end of the ventilation hole is fixedly connected with a quick-change connector mounting hole, a quick-change connector is arranged in the quick-change connector mounting hole, one end of the communication hole is an air gap arranged at the top of the upper cavity of the inner cylinder, the other end of the communication hole is communicated with the top of the outer cylinder, and the air gap is positioned between the; the lower end cover is provided with an atmospheric hole, one end of the atmospheric hole is the lower end of the inner cylinder lower cavity, the other end of the atmospheric hole is fixedly connected with a speed control valve mounting hole, and a speed control valve is arranged in the speed control valve mounting hole.
The inner cylinder and the outer cylinder of the gas spring are used for storing gas, inert gas enters the outer cylinder through the quick-change connector mounting hole and the air vent in sequence through the quick-change connector and then enters the upper cavity of the inner cylinder through the communication hole and the air gap, gas storage of the inner cylinder and the outer cylinder can be achieved, the lower cavity of the inner cylinder is communicated with the atmosphere through the atmosphere hole and the speed control valve mounting hole, and the speed of air flowing in the lower cavity of the inner cylinder and the atmosphere can be adjusted through the speed control valve. The upper end gland, the upper end cover and the lower end cover are all used for sealing gas in the inner cylinder and the outer cylinder.
When the piston rod of the air spring is pulled out, the piston slides upwards to compress the air in the upper cavity of the inner cylinder to the outer cylinder, and the outer cylinder stores the air, so that the effect of stabilizing the pressure of the system can be achieved, meanwhile, an air storage tank does not need to be additionally communicated, the space is saved, and the operation cost is saved.
The outer cylinder is used as an air storage cylinder and is connected with an external control air path, and the pressure is adjustable, so that the pressure acted on the upper surface of the piston by air pressure must be overcome when the piston rod is pulled out; when the piston is pressed back, when the pressure of the upper cavity of the inner cylinder is greater than the atmospheric pressure of the lower cavity of the inner cylinder, the air pressure pushes the piston to move downwards, the air spring shows a self-recovery characteristic, the recovery speed of the air spring depends on the atmospheric circulation speed of the speed control valve, the circulation speed is high, and otherwise, the recovery speed is low.
Preferably, a clamping table is arranged at the joint of the piston rod and the upper surface of the piston, a clamping groove is arranged on the joint of the piston rod and the inner end of the piston, assembling clearance grooves are respectively arranged at positions close to the upper surface and the lower surface of the piston, threads are arranged at the lower end of the piston rod, and nuts are connected to the threads in a matched mode.
The clamping groove plays an accurate positioning role for the piston, the clamping table can prevent the piston from sliding relative to the piston rod in the movement process, and the assembly clearance groove is beneficial to adjusting the connection relation between the piston and the piston rod in the installation process, so that the connection and fixing effects between the piston and the piston rod are better.
Preferably, the air gap is vertical to the communicating hole, the ventilating hole is vertical to the communicating hole, and the communicating hole is vertical to the quick-change connector mounting hole; the atmospheric hole itself is also provided as a 90 ° vertical through hole.
The air gaps, the communication holes and the ventilation holes are mutually vertical, and the large air holes are also vertical, so that the gas circulation can be ensured, a buffer flowing process is realized during gas discharge and charging, the right angle part plays a role in changing the direction of the gas flow, the gas flow is guided uniformly, sudden explosion and overlarge gas flow can not occur, and the use stability of the gas spring is improved.
Preferably, two O-shaped sealing rings are respectively arranged on contact walls between the upper end cover and the lower end cover and between the inner side of the inner cylinder and the inner side of the outer cylinder.
Preferably, a dustproof pad (2), a reciprocating motion bearing (4), a buffer sleeve and a one-way piston seal are sequentially connected between the piston rod and the upper end gland from top to bottom; a one-way piston seal, a guide belt and an O-shaped seal ring are sequentially arranged between the piston and the inner wall of the inner cylinder from top to bottom.
The piston rod is in sliding connection with the upper end gland, and the reciprocating motion bearing provides a supporting effect for the motion of the piston rod and reduces the sliding friction force; the dustproof pad prevents external dust from entering the cylinder, and the buffer sleeve plays a role in buffering and reduces friction; the one-way piston seal plays a sealing role, prevents internal gas from leaking and influences the using effect of the gas spring.
The guide belt can play a role in guiding, so that the inner cylinder wall and the piston are prevented from being abraded, the wear resistance is high, the friction is reduced, and the heat resistance is good; the one-way piston seal and the O-shaped seal ring have good sealing effect, the inner cylinder upper cavity and the inner cylinder lower cavity can be separated, the using effect of the air spring is guaranteed, and the air spring is restored after being used.
Preferably, the lower end cover is provided with a nut groove which is positioned on the inner side of the inner cylinder and is matched with the nut on the piston rod.
In order to stably fix the piston on the piston rod, a part of the piston rod, which is longer than the piston, needs to be provided with threads, and a washer and a nut which are matched with the threads are arranged on the part of the piston rod; when the piston moves to the bottom end after the gas spring is restored, the extended part of the piston rod is prevented from damaging the inner wall of the inner cylinder, so that a nut groove needs to be preset.
Preferably, the quick-change connector is positioned on the side surface of the upper end cover; the speed control valve is positioned on the same side of the lower end cover (29) corresponding to the quick-change connector.
The air flow monitoring device is positioned on the side face, can be adapted to other control systems, fully utilizes all directions of space, saves the space in the length direction, is positioned on the same side face, is convenient for monitoring the air flow condition of the upper cavity and the lower cavity of the inner cylinder, is convenient to control, and can be adjusted in time.
A pressure regulating system for a flexible fitness gas spring, comprising: the device comprises a digital control system and a ventilation control system, wherein the digital control system comprises a pressure sensor and a controller, the controller is fixedly connected to the pressure sensor, a digital display pressure switch and an internal thread quick-change straight joint are respectively arranged on the pressure sensor, and the internal thread quick-change straight joint is detachably connected to one end of a T-shaped pipe; the ventilation control system comprises a three-position five-way electromagnetic valve and a high-pressure air charging pump, the controller is connected with the high-pressure air charging pump and the three-position five-way electromagnetic valve simultaneously, an electromagnetic valve air inlet is formed in the three-position five-way electromagnetic valve and is detachably connected to the other end of the T-shaped pipe, the third end of the T-shaped pipe is detachably connected to the quick-change connector, and except that a wire connected with the controller is an electric wire, the rest of connection is an air pipe.
The controller obtains the gas pressure value in the gas spring cylinder through the pressure sensor, controls the inflation and the air shutoff of the high-pressure inflator pump, controls the ventilation and the deflation of the three-position five-way electromagnetic valve, achieves the adjustment of the pressure in the cylinder, and the T-shaped pipe plays the roles of ventilation and fixed connection. Its meaning lies in, can real-time detection and control for the pressure value of air spring can be stabilized at a value, also can adjust and set for different setting values according to user's demand simultaneously, makes the use flexibility of air spring higher. Eliminates the impact effect caused by the inertia effect of the weight apparatus in the process of movement in the process of grabbing and lifting or bench pressing exercise, has better buffer effect, and has better protection effect on the body-building trainers, particularly the muscle injury parts
Preferably, the ventilation control system further comprises an air filter, two quick-change straight joints are arranged on the air filter, one quick-change straight joint is connected with the high-pressure inflator pump, the other quick-change straight joint is connected with a three-position five-way electromagnetic valve, and a silencer is arranged on the three-position five-way electromagnetic valve.
The air filter can remove moisture in the air, keep the air dry and dry the air delivered by the high-pressure inflating pump so as to ensure the dryness of the air reaching the air spring, better protect each component and equipment, prevent the equipment from rusting, prolong the service life of the components and the equipment and ensure the use effect of the air spring; the three-position five-way electromagnetic valve is controlled to be disconnected or not through the air passage, so that a large sound is generated in the switching process, frequent switching is realized, and the noise generated when the three-position five-way electromagnetic valve is switched on and off can be reduced by the silencer.
Preferably, the controller is provided with a chip, an internal circuit, a display screen and a digital key, and the internal circuit is communicated with the chip, the display screen and the digital key inside the controller.
The digital key is used for inputting a preset value, the left side of the display screen displays the preset value, the right side displays a real-time pressure value in the cylinder obtained from the pressure sensor, the chip is used for storing data and comparing the real-time pressure value with the preset value, when the real-time pressure value is smaller than the preset value, the chip sends an instruction to inflate the high-pressure inflator pump, meanwhile, a vent valve of the three-position five-way electromagnetic valve is opened to inflate the tank, and when the real-time pressure value is equal to the preset value, the high-pressure inflator pump stops inflating and closes the vent valve of the three-position five-way electromagnetic; when the real-time pressure value is larger than the set value, the chip sends an instruction to open the air release valve of the three-position five-way electromagnetic valve, when the real-time pressure value is equal to the set value, the air release valve of the three-position five-way electromagnetic valve is closed, and the internal circuit is responsible for transmitting each instruction. Real-time monitoring and timely adjustment can be realized.
Therefore, the invention has the following beneficial effects:
(1) the pressure stabilizing device can play a role in stabilizing the system pressure, and meanwhile, an air storage tank does not need to be additionally communicated, so that the space and the operation cost are saved;
(2) the pressure value of the air spring can be stably set at one value by real-time detection and control, and different set values can be adjusted and set according to the requirements of users, so that the use flexibility of the air spring is higher;
(3) the impact effect caused by the inertia effect of the weight instrument in the process of movement is eliminated in the process of grabbing and lifting or bench pressing exercise, the buffer effect is better, and the protection effect on the body-building trainer, particularly the muscle injury part, is better.
Drawings
Fig. 1 is a schematic view of the cylinder structure of the present invention.
FIG. 2 is a schematic view of the connection of the gas spring pressure regulating system of the present invention.
In the figure: 1. the device comprises a piston rod 1.2, a piston 2, a dustproof pad 3, an upper end gland 4, a reciprocating bearing 5, a buffer sleeve 6, a one-way piston seal 7, an upper end cover 8, an O-shaped sealing ring 9, an air gap 10, a communication hole 11, a ventilation hole 12, a quick-change connector mounting hole 13, a quick-change connector 14, a speed control valve 15, an atmospheric hole 16, a speed control valve mounting hole 17, a pull rod 18, a thin nut 19, an elastic gasket 20, a nut groove 21, a nut 22, a guide belt 23, a clamping table 24, an assembly clearance groove 25, a clamping groove 26, an outer cylinder 27, an inner cylinder upper cavity 28, an inner cylinder lower cavity 29, a lower end cover 30, a screw 31, a high-pressure air pump 32, an air filter 33, a quick-change direct head 34, a three-position five-way electromagnetic valve 35, a silencer 36, a T-shaped pipe 37, the digital display pressure switch 38.2, the internal thread quick change straight joint 39, the controller 39.1, the display screen 39.2, the number button 40, the air pipe 41 and the electric wire.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
Examples
In the embodiment shown in fig. 1 and 2, a high-strength damper mounting structure, a flexible fitness gas spring, includes a piston rod assembly and a two-cylinder assembly, where the two-cylinder assembly includes an inner cylinder, an outer cylinder 26, an upper end cover 3, an upper end cover 7 and a lower end cover 29, the inner cylinder is located in the outer cylinder, the upper end cover and the lower end cover are detachably connected to the upper end and the lower end of the inner cylinder and the outer cylinder 26, respectively, a groove is formed on the upper side of the upper end cover 7, and the upper end cover 3 is detachably connected to the groove; the piston rod assembly comprises a piston rod 1 and a piston 1.2, the piston 1.2 is detachably connected to the inner end of the piston rod 1, the piston 1.2 is slidably connected to the inner side of the inner cylinder, the inner cylinder is divided into an inner cylinder upper cavity 27 and an inner cylinder lower cavity 28 by the piston 1.2, the piston rod 1 penetrates through the upper end cover 7 and the upper end gland 3 and is slidably connected with the upper end cover 7 and the upper end gland 3, the piston rod 1 is coaxial with the inner cylinder, a clamping table 23 is arranged at the joint of the upper surface of the piston rod 1 and the upper surface of the piston 1.2, a clamping groove 25 is arranged on the joint face of the piston rod 1 and the inner end of the piston 1.2, assembling clearance grooves 24 are respectively arranged on the upper surface and the lower surface. A dustproof pad 2, a reciprocating motion bearing 4, a buffer sleeve 5 and a one-way piston seal 6 are sequentially connected between the piston rod 1 and the upper end gland 3 from top to bottom. A one-way piston seal 6, a guide belt 22 and an O-shaped seal ring 8 are sequentially arranged between the piston 1.2 and the inner wall of the inner cylinder from top to bottom.
The upper end cover 7 is provided with a ventilating hole 11 and a communicating hole 10, one end of the ventilating hole 11 is connected with the upper end of the outer cylinder 26, the other end of the ventilating hole is fixedly connected with a quick-change connector mounting hole 12, a quick-change connector 13 is arranged in the quick-change connector mounting hole 12, one end of the communicating hole 10 is an air gap 9 arranged at the top of the upper cavity of the inner cylinder, the other end of the communicating hole is communicated with the top of the outer cylinder 26, and the air gap 9 is positioned between the piston rod 1; the lower end cover 29 is provided with an atmospheric hole 15, one end of the atmospheric hole 15 is the lower end of the inner cylinder lower cavity, the other end of the atmospheric hole is fixedly connected with a speed control valve mounting hole 16, and a speed control valve 14 is arranged in the speed control valve mounting hole 16. The air gap 9 is vertical to the communicating hole 10, the ventilating hole 11, the communicating hole 10 and the quick-change connector mounting hole 12; the atmospheric hole 15 itself is also provided as a 90 ° vertical through hole. Two O-shaped sealing rings 8 are respectively arranged on the contact walls between the upper end cover 7 and the lower end cover 29 and the inner sides of the inner cylinder and the outer cylinder 26. The lower end cap 29 is provided with a nut groove 20 on the inner side of the inner cylinder for cooperating with said nut 21 on the piston rod 1. The quick-change connector 13 is positioned on the side surface of the upper end cover 7; the speed control valve 14 is located on the same side of the lower end cap 29 as the quick-change coupling 13.
A pressure regulating system for a flexible fitness gas spring, comprising: the air-exchange control system comprises a digital control system and an air-exchange control system, wherein the digital control system comprises a pressure sensor 38 and a controller 39, the controller is provided with a chip, an internal circuit, a display screen 39.1 and a digital key 39.2, and the internal circuit is communicated with the chip, the display screen and the digital key in the controller.
The controller 39 is fixedly connected to the pressure sensor 38, a digital display pressure switch 38.1 and an internal thread quick-change straight joint 38.2 are respectively arranged on the pressure sensor 38, and the internal thread quick-change straight joint 38.2 is detachably connected to one end of the T-shaped pipe 36; the ventilation control system comprises a three-position five-way electromagnetic valve 34 and a high-pressure air charging pump 31, a controller 39 is connected with the high-pressure air charging pump 31 and the three-position five-way electromagnetic valve 34 at the same time, an electromagnetic valve air inlet is formed in the three-position five-way electromagnetic valve 34 and is detachably connected to the other end of a T-shaped pipe 36, a third end 37 of the T-shaped pipe is detachably connected to a quick change connector 13, and except that a wire 41 connected with the controller 39 is adopted, the rest of connection is an air pipe 40. The ventilation control system further comprises an air filter 32, two quick-change straight joints 33 are arranged on the air filter 32, one quick-change straight joint 33 is connected with the high-pressure inflator pump 31, the other quick-change straight joint 33 is connected with a three-position five-way electromagnetic valve 34, and a silencer 35 is arranged on the three-position five-way electromagnetic valve 34.
The specific working principle of the above embodiment is as follows:
when the air tension spring is stretched, the piston rod is pulled out to drive the piston to move upwards to compress the gas on the upper cavity of the inner cylinder, the gas on the upper cavity of the inner cylinder reaches the outer cylinder through the gas seam and the communicating hole, the outer cylinder is used as a gas storage cylinder and is connected with an external control gas circuit, so that the force acting on the gas spring must overcome the pressure acting on the upper surface of the piston by the gas pressure to do work to achieve the purpose of exercising and body building, the lower cavity of the inner cylinder is communicated with the external atmosphere through the atmospheric hole, the speed control valve mounting hole and the speed control valve all the time, and the lower surface of the.
When the air spring is restored, the piston rod is not under the action of external force, the piston is pressed back to drive the piston rod to move downwards, the pressure of the upper cavity of the inner cylinder is greater than the atmospheric pressure, namely the pressure of the upper surface of the piston is greater than that of the lower surface of the piston, the piston is driven to move downwards by pressure difference generated by the upper surface and the lower surface of the piston, the air tension spring has the self-restoration characteristic, the restoration speed of the air spring depends on the ventilation speed of air in the speed control valve, the air circulation speed is high, the air spring is fast in restoration, the air circulation speed is low, and.
When the internal air pressure of the air spring needs to be monitored and adjusted in real time, the controller acquires the air pressure value in the air spring cylinder through the pressure sensor, controls the inflation and deflation of the high-pressure inflator pump, controls the ventilation and deflation of the three-position five-way electromagnetic valve, achieves the adjustment of the pressure in the air cylinder, inputs a preset value through the digital key, displays the set value on the left side of the display screen, displays the real-time pressure value in the air cylinder acquired from the pressure sensor on the right side, stores the data of the lower sensor through the chip, compares the real-time pressure value with the set value, and then sends out a related instruction.
When the real-time pressure value is smaller than the set value, the chip sends an instruction to enable the high-pressure inflator pump to inflate, meanwhile, a vent valve of the three-position five-way electromagnetic valve is opened, airflow reaches the air filter from the high-pressure inflator pump through an air pipe, then sequentially flows through the five-position three-way electromagnetic valve, the T-shaped pipe, the quick-change connector and the quick-change connector mounting hole to reach the outer cylinder, inflation is completed, and the high-pressure inflator pump, the T-shaped pipe, the.
When the real-time pressure value is equal to the set value, the high-pressure inflator stops inflating and closes the vent valve of the three-position five-way electromagnetic valve
When the real-time pressure value is larger than the set value, the chip sends an instruction to open the air release valve of the three-position five-way electromagnetic valve, the gas in the gas spring cylinder sequentially passes through the quick-change connector mounting hole, the quick-change connector and the T-shaped pipe and finally reaches the three-position five-way electromagnetic valve, and the gas is released from the gas outlet to complete air release.
The controller controls the high-pressure inflator pump, the three-position five-way electromagnetic valve and the pressure sensor through an internal circuit and an external connecting circuit of the controller.

Claims (7)

1. A flexible fitness gas spring comprises a piston rod assembly and a double-cylinder assembly, and is characterized in that the double-cylinder assembly comprises an inner cylinder, an outer cylinder, an upper end gland, an upper end cover and a lower end cover, wherein the inner cylinder is positioned in the outer cylinder; the piston rod assembly comprises a piston rod and a piston, the piston is detachably connected to the inner end of the piston rod, the piston is connected to the inner side of the inner cylinder in a sliding mode, the inner cylinder is divided into an upper cavity of the inner cylinder and a lower cavity of the inner cylinder by the piston, the piston rod penetrates through the upper end cover and the upper end gland and is connected with the upper end cover and the upper end gland in a sliding mode, and the piston rod is coaxial with the inner cylinder; the upper end cover is provided with a ventilation hole and a communication hole, one end of the ventilation hole is connected with the upper end of the outer cylinder, the other end of the ventilation hole is fixedly connected with a quick-change connector mounting hole, a quick-change connector is arranged in the quick-change connector mounting hole, one end of the communication hole is an air gap arranged at the top of the upper cavity of the inner cylinder, the other end of the communication hole is communicated with the top of the outer cylinder, and the air gap is positioned between the; the lower end cover is provided with an atmospheric hole, one end of the atmospheric hole is the lower end of the lower cavity of the inner cylinder, the other end of the atmospheric hole is fixedly connected with a speed control valve mounting hole, and a speed control valve is arranged in the speed control valve mounting hole; a clamping table is arranged at the joint of the piston rod and the upper surface of the piston, a clamping groove is arranged on the joint of the piston rod and the inner end of the piston, assembling clearance grooves are respectively arranged at positions close to the upper surface and the lower surface of the piston, threads are arranged at the lower end of the piston rod, and nuts are connected to the threads in a matched manner; two O-shaped sealing rings are respectively arranged on the contact walls between the upper end cover and the lower end cover and the inner sides of the inner cylinder and the outer cylinder;
the air gaps are vertical to the communicating holes, the ventilating holes are vertical to the communicating holes, and the ventilating holes are vertical to the quick change connector mounting holes; the atmospheric hole itself is also provided as a 90 ° vertical through hole.
2. The flexible fitness gas spring as claimed in claim 1, wherein a dustproof cushion, a reciprocating bearing, a buffer sleeve and a one-way piston seal are sequentially connected between the piston rod and the upper end gland from top to bottom; a one-way piston seal, a guide belt and an O-shaped seal ring are sequentially arranged between the piston and the inner wall of the inner cylinder from top to bottom.
3. A flexible fitness gas spring as claimed in claim 1, wherein the lower end cap is provided with a nut recess on the inner side of the inner cylinder for engagement with said nut on the piston rod.
4. A flexible fitness gas spring according to claim 3, wherein the quick change coupler is located on a side of the upper end cap; the speed control valve is positioned on the same side surface of the lower end cover corresponding to the quick-change connector.
5. A pressure regulating system incorporating a flexible fitness gas spring as claimed in any one of claims 1-4, comprising: the system comprises a digital control system and a ventilation control system, and is characterized in that the digital control system comprises a pressure sensor and a controller, the controller is fixedly connected to the pressure sensor, a digital display pressure switch and an internal thread quick-change straight joint are respectively arranged on the pressure sensor, and the internal thread quick-change straight joint is detachably connected to one end of a T-shaped pipe; the ventilation control system comprises a three-position five-way electromagnetic valve and a high-pressure air charging pump, the controller is connected with the high-pressure air charging pump and the three-position five-way electromagnetic valve simultaneously, an electromagnetic valve air inlet is formed in the three-position five-way electromagnetic valve and is detachably connected to the other end of the T-shaped pipe, the third end of the T-shaped pipe is detachably connected to the quick-change connector, and except that a wire connected with the controller is an electric wire, the rest of connection is an air pipe.
6. The pressure regulating system with the flexible fitness air spring as claimed in claim 5, wherein the ventilation control system further comprises an air filter, the air filter is provided with two quick-change straight joints, one quick-change straight joint is connected with the high-pressure inflator pump, the other quick-change straight joint is connected with a three-position five-way electromagnetic valve, and the three-position five-way electromagnetic valve is provided with a silencer.
7. The pressure regulating system with the flexible fitness gas spring as claimed in claim 5 or 6, wherein the controller is provided with a chip, an internal circuit, a display screen and a number key, and the internal circuit is communicated with the chip, the display screen and the number key inside the controller.
CN201910625031.9A 2019-07-11 2019-07-11 Flexible body-building air spring and pressure regulating system Active CN110439950B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910625031.9A CN110439950B (en) 2019-07-11 2019-07-11 Flexible body-building air spring and pressure regulating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910625031.9A CN110439950B (en) 2019-07-11 2019-07-11 Flexible body-building air spring and pressure regulating system

Publications (2)

Publication Number Publication Date
CN110439950A CN110439950A (en) 2019-11-12
CN110439950B true CN110439950B (en) 2021-07-16

Family

ID=68430187

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910625031.9A Active CN110439950B (en) 2019-07-11 2019-07-11 Flexible body-building air spring and pressure regulating system

Country Status (1)

Country Link
CN (1) CN110439950B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120960A1 (en) * 1991-06-25 1993-01-07 Werner Schilling Training appts. for exercise therapy - has piston-cylinder unit with EM valves controlled w.r.t. force settings
CN1208357A (en) * 1996-01-11 1999-02-17 春日启 Kicking type training apparatus
CN102333971A (en) * 2009-02-26 2012-01-25 斯特罗姆肖尔曼股份公司 A counterbalancing arrangement and method for counterbalancing two mutually movable parts comprising a gas spring
CN206072196U (en) * 2016-08-31 2017-04-05 北京吉信气弹簧制品有限公司 The pulling force gas spring that a kind of power output is steady, force variation is little
CN108853882A (en) * 2018-08-31 2018-11-23 嘉兴路德汽车零部件有限公司 Active force automatic regulating apparatus between two assemblies
CN108926799A (en) * 2018-07-19 2018-12-04 朱亮 The load of closed pressure vessel air pressure and control system for health and fitness facilities

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120960A1 (en) * 1991-06-25 1993-01-07 Werner Schilling Training appts. for exercise therapy - has piston-cylinder unit with EM valves controlled w.r.t. force settings
CN1208357A (en) * 1996-01-11 1999-02-17 春日启 Kicking type training apparatus
CN102333971A (en) * 2009-02-26 2012-01-25 斯特罗姆肖尔曼股份公司 A counterbalancing arrangement and method for counterbalancing two mutually movable parts comprising a gas spring
CN206072196U (en) * 2016-08-31 2017-04-05 北京吉信气弹簧制品有限公司 The pulling force gas spring that a kind of power output is steady, force variation is little
CN108926799A (en) * 2018-07-19 2018-12-04 朱亮 The load of closed pressure vessel air pressure and control system for health and fitness facilities
CN108853882A (en) * 2018-08-31 2018-11-23 嘉兴路德汽车零部件有限公司 Active force automatic regulating apparatus between two assemblies

Also Published As

Publication number Publication date
CN110439950A (en) 2019-11-12

Similar Documents

Publication Publication Date Title
CN106197988B (en) A kind of gas spring tensile test device
CN115979486B (en) A traction force test detection device for winch production
CN110439950B (en) Flexible body-building air spring and pressure regulating system
CN210599982U (en) Flexible body-building air spring and pressure regulating system
CN110380597A (en) A kind of frequency converter integrates mounting seat
CN208996677U (en) A kind of hydraulic tube drawing bench convenient for fixed sleeving and drilling rod
CN208330662U (en) A kind of air compressor of low noise
CN107290144A (en) A kind of vibration damper endurance test side force load maintainer
CN108853882A (en) Active force automatic regulating apparatus between two assemblies
CN112123098A (en) Effectual grinding device of centre gripping
CN215568016U (en) Pneumatic regulating valve
CN107905980B (en) Air compressor piston
CN114272542B (en) Movable fire fighting equipment
CN110926965A (en) A controllable pressure gas shock test bench
CN207033480U (en) Exhaust system for constructing tunnel
CN213623044U (en) Fixing device for hoist winch
CN209623970U (en) A kind of steel modeling crossover sub pneumatic sealing test equipment
CN209513120U (en) Propulsion test device
CN208877813U (en) Active force automatic regulating apparatus and fitness equipment between two assemblies
CN2593848Y (en) Ball feeder
CN209961621U (en) A pantograph fatigue test device
CN223157089U (en) A mobile relay communication device
CN208745673U (en) A kind of de- hooking device of the hook vehicle based on air entrained concrete
CN214036032U (en) Air pump for inspection convenient to equipment
CN207888339U (en) The work station of polishing plastic cylindrical workpiece

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: No.66 Chunxiao xunhai Road, Beilun District, Ningbo City, Zhejiang Province

Patentee after: Ningbo Yili Industrial Co.,Ltd.

Address before: No.66 Chunxiao xunhai Road, Beilun District, Ningbo City, Zhejiang Province

Patentee before: NINGBO YILI SHOCK ABSORBER Co.,Ltd.