CN114704578A - Vibration reduction ball head screw rod for pneumatic altitude valve - Google Patents

Vibration reduction ball head screw rod for pneumatic altitude valve Download PDF

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Publication number
CN114704578A
CN114704578A CN202210356660.8A CN202210356660A CN114704578A CN 114704578 A CN114704578 A CN 114704578A CN 202210356660 A CN202210356660 A CN 202210356660A CN 114704578 A CN114704578 A CN 114704578A
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CN
China
Prior art keywords
ball
valve
screw rod
rod
valve body
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.)
Withdrawn
Application number
CN202210356660.8A
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Chinese (zh)
Inventor
李万国
吕敏
王泽齐
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Beihang University
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Beihang University
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Publication date
Application filed by Beihang University filed Critical Beihang University
Priority to CN202210356660.8A priority Critical patent/CN114704578A/en
Publication of CN114704578A publication Critical patent/CN114704578A/en
Withdrawn legal-status Critical Current

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    • 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
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/068—Special features relating to lubrication
    • 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
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • 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
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • 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
    • F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
    • F16F9/437—Drainage arrangements
    • 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
    • F16F2230/00—Purpose; Design features
    • F16F2230/14—Ball joints; Spherical support elements

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention discloses a vibration reduction ball head screw rod for a pneumatic height valve, which relates to the field of vibration control and comprises a valve body, a valve rod, a screw rod, a ball barrel, a sponge block, a ball seat, a set screw, a rubber ball and the like. The valve rod is hinged to the valve body through a pin shaft, the screw rod is connected to the valve rod through threads, the sponge block and the ball seat are sequentially placed in the ball cylinder at the upper end of the screw rod, the ball seat can vertically move under the guiding effect of the fastening screws on the two sides to compress the sponge block, and a rubber ball is placed in the ball socket at the top of the ball cylinder and contacts with a load. The rubber ball is arranged to reduce the friction of the contact position, and the sponge block is arranged to absorb the vibration on the valve body, so that the functions of controlling the position of the load relative to the valve body by a common altitude valve are realized, the contact friction is reduced, the vibration is buffered, and the rubber ball type air spring vibration isolator has important significance for improving the performance of the air spring vibration isolator.

Description

Vibration reduction ball head screw for pneumatic altitude valve
Technical Field
The invention belongs to the technical field of machinery and pneumatics, in particular relates to a height adjusting mechanism of an air spring vibration isolator in the field of vibration control, and particularly relates to a vibration reduction ball screw for a pneumatic height valve.
Background
The air spring vibration isolator is vibration isolation equipment designed by utilizing the advantages of high bearing capacity, low rigidity and the like of an air spring, and is widely applied to environments sensitive to vibration requirements, such as vehicle suspensions, precision instruments and the like. The height valve is a key component of the air spring vibration isolator, and the inflation and deflation processes of the air bag are controlled by dynamically sensing the height change of the load under different road conditions or ground excitation conditions, so that the load is always kept at a set height value, and the relative stability of the load is realized.
At present, a valve body of a high-altitude valve on an air spring is generally a two-position three-way valve, and a valve rod mainly comprises a lever type with a roller and a screw rod type with a sponge block. The roller lever type allows the lateral displacement of the valve rod in the height adjustment process, has small friction with the load, but is easy to transmit vibration to the load due to lack of buffering; the sponge screw type is through applying the sponge piece in contact position, effectively weakens the vibration transmission, but the sponge is great with load friction among the altitude mixture control process, adjusts sensitively inadequately. Therefore, the pneumatic valve rod which can reduce contact friction and has a certain buffering and vibration damping effect is designed, and the pneumatic valve rod has important significance for improving the performance of the air spring vibration isolator.
Disclosure of Invention
In view of the above, the invention provides a vibration damping ball head screw rod for a pneumatic height valve, which is used for meeting the requirements of reducing contact friction and buffering vibration damping in the height adjustment process of an air spring.
In order to realize the purpose, the technical scheme adopted by the invention is as follows:
a vibration reduction ball head screw rod for a pneumatic height valve comprises a valve body, a valve rod and a ball head screw rod; the ball head screw specifically comprises a screw, a ball barrel, a sponge block, a ball seat, a set screw and a rubber ball.
The valve rod swings up and down to control the valve core in the valve body to move up and down so as to control air intake and exhaust of the valve; a plurality of vertical thread through holes are uniformly distributed on the right side of the valve rod, external threads on the screw rod in the ball head screw rod are matched with any threaded hole, and the ball head screw rod is screwed into threads with a certain length, so that the ball head screw rod can move left and right and up and down relative to the valve body, and the function of setting the load height is finally realized.
The bottom of the ball cylinder is provided with a threaded hole and is connected with the screw rod through thread fit, and a cylindrical sponge block and a ball seat are sequentially placed in the ball cylinder; the ball seat is in clearance fit with the ball barrel and can move up and down relative to the ball barrel, and the sponge block can provide buffering and vibration damping effects for the movement of the ball seat; the left side and the right side of the ball barrel are provided with symmetrical thread through holes, two set screws are respectively screwed in the symmetrical thread through holes and extend into key grooves at corresponding positions of the ball seat, so that the rotation of the ball seat relative to the ball barrel is limited on one hand, and the up-and-down movement of the ball seat relative to the ball barrel is guided on the other hand; the rubber ball is embedded into the ball socket above the ball barrel to form a ball hinge structure, lubricating oil is injected, the rubber ball contacts with load during working, on one hand, the contact friction force is small because the ball and the plane are approximately in point contact, on the other hand, the ball can roll in the ball socket, the degree of freedom of lateral displacement of the valve rod attached when the height of the load is changed is increased, and the contact friction is further reduced.
The invention has the beneficial effects that:
1. the rubber ball is arranged at the contact position of the altitude valve and the load, the line-surface contact between a common roller and a plane is optimized to be point-surface contact, the contact friction is reduced, and the rubber ball rolls in the ball seat to adapt to the transverse side displacement of the contact point when the altitude changes, so that the friction is further reduced;
2. according to the invention, the sponge block is arranged between the ball seat and the ball barrel, and the relative rotation is limited and the guiding effect is provided through the two set screws, so that the mechanism has certain flexibility due to the existence of the sponge block, the vibration on the valve body and the valve rod can be absorbed, the vibration cannot be transmitted to the load, and the effect of reducing the vibration transmission of the height valve branch is achieved.
Drawings
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a half sectional view of the ball screw of the present invention;
in the figure: 1. a valve body; 2. a valve stem; 3. a ball head screw; 3-1. screw; 3-2. a ball cylinder; 3-3, sponge block; 3-4, a ball seat; 3-5, tightening the screw; 3-6, rubber ball.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of describing embodiments of the present invention.
Referring to fig. 1 and 2, a damping ball screw for a pneumatic altitude valve includes a valve body (1), a valve rod (2), and a ball screw (3); the ball head screw specifically comprises a screw (3-1), a ball barrel (3-2), a sponge block (3-3), a ball seat (3-4), a set screw (3-5) and a rubber ball (3-6).
A transverse through hole is formed in the left side of the valve rod (2) and is hinged to the valve body (1) through a pin shaft, and the valve rod (2) can swing up and down to control a valve core in the valve body (1) to move up and down so as to control air intake and exhaust of the valve; a plurality of vertical thread through holes are uniformly distributed on the right side of the valve rod (2), and the ball head screw rod is matched with any threaded hole through external threads on the screw rod (3-1) in the ball head screw rod (3) and is screwed into threads with a certain length, so that the ball head screw rod can move left and right and up and down relative to the valve body, and the function of setting the load height is finally realized.
The bottom of the ball cylinder (3-2) is provided with a threaded hole and is connected with the screw rod (3-1) through thread matching, and the cylindrical sponge block (3-3) and the ball seat (3-4) are sequentially placed in the ball cylinder (3-2); the ball seat (3-4) is in clearance fit with the ball barrel (3-2), the ball seat (3-4) can move up and down relative to the ball barrel (3-2), and the sponge block (3-3) can provide buffering and vibration damping effects for the movement of the ball seat (3-4); the left side and the right side of the ball barrel (3-4) are provided with symmetrical thread through holes, two set screws (3-5) are respectively screwed in the symmetrical thread through holes and extend into key grooves at corresponding positions of the ball seat (3-4), so that the rotation of the ball seat (3-4) relative to the ball barrel (3-2) is limited on one hand, and the up-and-down movement of the ball seat (3-4) relative to the ball barrel (3-2) is guided on the other hand; the rubber balls (3-6) are embedded into the ball sockets above the ball barrels (3-4) to form a ball hinge structure, lubricating oil is injected, the rubber balls (3-6) contact with loads during work, on one hand, because the balls and the planes are approximately point contact, contact friction is small, on the other hand, the balls can roll in the ball sockets, the degree of freedom of lateral displacement of the valve rod attached when the height of the loads is changed is increased, and contact friction is further reduced.
The above-mentioned embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above-mentioned embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and they are intended to be included in the scope of the present invention.

Claims (1)

1. The utility model provides a damping bulb screw rod for pneumatic altitude valve which characterized in that: comprises a valve body, a valve rod and a ball head screw rod; the ball head screw specifically comprises a screw, a ball barrel, a sponge block, a ball seat, a set screw and a rubber ball;
the valve rod is hinged on the valve body through a pin shaft, and the valve rod can control the valve core in the valve body to move up and down by swinging up and down; a plurality of threaded through holes are uniformly distributed on the right side of the valve rod, and external threads on a screw rod in the ball head screw rod are matched with the threaded holes, so that the ball head screw rod can move left and right and up and down relative to the valve body;
the bottom of the ball cylinder is provided with a threaded hole and is connected with the screw rod through thread fit, and a cylindrical sponge block and a ball seat are sequentially placed in the ball cylinder; the ball seat is in clearance fit with the ball barrel and can move up and down relative to the ball barrel, and the sponge block can provide buffering and vibration damping effects for the movement of the ball seat; the left side and the right side of the ball barrel are provided with symmetrical thread through holes, and two set screws are respectively screwed in the symmetrical thread through holes and extend into key grooves at corresponding positions of the ball seat to play a role in guiding; the rubber ball is embedded into the ball socket above the ball barrel to form a ball hinge structure which can roll, and contact friction is reduced.
CN202210356660.8A 2022-03-31 2022-03-31 Vibration reduction ball head screw rod for pneumatic altitude valve Withdrawn CN114704578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210356660.8A CN114704578A (en) 2022-03-31 2022-03-31 Vibration reduction ball head screw rod for pneumatic altitude valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210356660.8A CN114704578A (en) 2022-03-31 2022-03-31 Vibration reduction ball head screw rod for pneumatic altitude valve

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CN114704578A true CN114704578A (en) 2022-07-05

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202377478U (en) * 2011-12-31 2012-08-15 昆山圣泰机电制造有限公司 Improved structure for guiding upper mould of riveting and pressing machine
CN103672033A (en) * 2012-09-24 2014-03-26 宁波陈氏鑫光气动有限公司 Connector type two-position and three-way valve
CN204658047U (en) * 2015-03-30 2015-09-23 西峡县内燃机进排气管有限责任公司 Air discharging manifold flange hole runner elastic floating locating taper pin
CN104948641A (en) * 2015-05-13 2015-09-30 中国科学院上海光学精密机械研究所 Automatic height adjustment valve of optical vibration isolation platform
CN205877056U (en) * 2016-07-25 2017-01-11 武汉华之洋科技有限公司 Air supporting vibration isolation system control valve
CN209125348U (en) * 2018-09-27 2019-07-19 杭州昌鼎机械有限公司 A kind of floating location taper pin mechanism
CN213117271U (en) * 2020-09-02 2021-05-04 浙江永安工程机械有限公司 Buffer device connected with pile cap for hydraulic impact hammer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202377478U (en) * 2011-12-31 2012-08-15 昆山圣泰机电制造有限公司 Improved structure for guiding upper mould of riveting and pressing machine
CN103672033A (en) * 2012-09-24 2014-03-26 宁波陈氏鑫光气动有限公司 Connector type two-position and three-way valve
CN204658047U (en) * 2015-03-30 2015-09-23 西峡县内燃机进排气管有限责任公司 Air discharging manifold flange hole runner elastic floating locating taper pin
CN104948641A (en) * 2015-05-13 2015-09-30 中国科学院上海光学精密机械研究所 Automatic height adjustment valve of optical vibration isolation platform
CN205877056U (en) * 2016-07-25 2017-01-11 武汉华之洋科技有限公司 Air supporting vibration isolation system control valve
CN209125348U (en) * 2018-09-27 2019-07-19 杭州昌鼎机械有限公司 A kind of floating location taper pin mechanism
CN213117271U (en) * 2020-09-02 2021-05-04 浙江永安工程机械有限公司 Buffer device connected with pile cap for hydraulic impact hammer

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Application publication date: 20220705