CN214171489U

CN214171489U - Straightening lengthened walking row pin

Info

Publication number: CN214171489U
Application number: CN202022518498.4U
Authority: CN
Inventors: 刘桂昌; 刘国裕
Original assignee: Guangzhou Ganghe Metal Products Co ltd
Current assignee: Guangzhou Ganghe Metal Products Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-09-10
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses a straightening lengthened walking pin, which comprises a rod body, wherein a first sealing shaft shoulder, a second sealing shaft shoulder, a third sealing shaft shoulder and a fourth sealing shaft shoulder are arranged outside the rod body, oil inlet grooves are formed in the port parts of the first sealing shaft shoulder, the second sealing shaft shoulder, the third sealing shaft shoulder and the fourth sealing shaft shoulder, and a pressure equalizing port is formed in the position, opposite to the port part of the second sealing shaft shoulder, of the outer surface of one end of the first sealing shaft shoulder and the outer surface of one end of the second sealing shaft shoulder; this practicality is through the voltage-sharing mouth and assorted auxiliary structure that set up, can be when using, stabilize near the oil pressure of oil feed tank, can provide the pressure release notch when pressure is too high, avoid high-pressure impact to lead to near oil feed tank structure to appear damaging, can guarantee that the body of rod carries out normal use, has improved holistic life. The sectional carburizing and quenching process is adopted, so that the mechanical property requirement of the part is ensured, and the plasticity required by straightening the part is also ensured.

Description

Straightening lengthened walking row pin

Technical Field

The utility model relates to a distribution valve field specifically is a round pin is arranged in alignment extension walking.

Background

The distribution valve controls the inflation and the exhaust of the acting air cylinder according to the pressure change in the train pipe, realizes the braking, pressure maintaining or relieving of the locomotive through the action of the change valve and the acting valve, and also adopts a pump body to brake in an oil liquid pushing mode.

A plurality of valve rods, namely pins, are usually arranged in the distribution valve, and the existing straightening and lengthening walking pins have certain problems:

the round pin is arranged in current alignment extension walking provides the steady voltage effect that the fluid of the oil feed tank to inside flows through the pressure-equalizing groove usually, and the pressure-equalizing groove only can provide holistic steady voltage when in actual application, can't provide fine steady voltage effect to near the oil pressure of oil feed tank notch, near the oil feed tank notch because be in the unstable condition of pressure for a long time, the unsafe condition of precision appears easily, the condition of structural damage appears even when pressure is too big.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a round pin is arranged in alignment extension walking, it adopts cooperation sectional type carburization quenching process, has both guaranteed the mechanical properties requirement of part, guarantees the part again at the required plasticity of alignment. And, the utility model discloses can guarantee that the body of rod carries out normal use, improve holistic life, have more the practicality than current structure.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a round pin is arranged in alignment extension walking, includes the body of rod, first sealed shaft shoulder, the sealed shaft shoulder of second, the sealed shaft shoulder of third and the sealed shaft shoulder of fourth have been seted up to the outside of the body of rod, the port department of the sealed shaft shoulder of first sealed shaft shoulder, the sealed shaft shoulder of second, the sealed shaft shoulder of third and the sealed shaft shoulder of fourth has all seted up the oil feed tank, the one end surface of the sealed shaft shoulder of first sealed shaft shoulder and second is located the sealed shaft shoulder of first sealed shaft shoulder and the relative department of the sealed shaft shoulder port of second and has all seted up the voltage-sharing mouth, the one end surface of the sealed shaft shoulder of third and the sealed shaft shoulder of fourth is located the sealed shaft shoulder of first sealed shaft shoulder and the relative department of the sealed shaft shoulder port of second and has all seted up the voltage-sharing mouth.

Preferably, the pressure equalizing ports penetrate through the other ends of the corresponding first sealing shaft shoulder, the second sealing shaft shoulder, the third sealing shaft shoulder and the fourth sealing shaft shoulder, an inner air passage is formed between the pressure equalizing ports at the two ends, and the inner air passage is a circular air passage.

Preferably, the first sealing shaft shoulder, the second sealing shaft shoulder, the third sealing shaft shoulder and the fourth sealing shaft shoulder are positioned on two sides of the pressure equalizing port and are also provided with penetrating side air passages.

Preferably, oil inlet grooves are formed in one ends of the first sealing shaft shoulder, the second sealing shaft shoulder, the third sealing shaft shoulder and the fourth sealing shaft shoulder.

Preferably, the outer surfaces of the first sealing shaft shoulder, the second sealing shaft shoulder, the third sealing shaft shoulder and the fourth sealing shaft shoulder are provided with pressure equalizing grooves.

Preferably, the upper end of the third sealing shaft shoulder is sleeved with an inner spring, and the upper end of the third sealing shaft shoulder is positioned on the outer side of the inner spring and provided with an outer spring.

Compared with the prior art, the beneficial effects of the utility model are that:

the sectional carburizing and quenching process is adopted, so that the mechanical property requirement of the part is ensured, and the plasticity required by straightening the part is also ensured.

Through the voltage-sharing mouth that sets up and assorted auxiliary structure, can stabilize near the oil pressure of oil feed tank when using, can provide the pressure release notch when pressure is too high, avoid high-pressure impact to lead to near oil feed tank structure to appear damaging, possess certain stable effect to can guarantee that the body of rod carries out normal use, improve holistic life, have more the practicality than current structure.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of a third sealing shoulder of the present invention.

In the figure: 10-a rod body; 11-a pressure equalizing groove; 12-a first sealing shoulder; 13-a second sealing shoulder; 14-an outer spring; 15-an internal spring; 16-a third sealing shoulder; 161-pressure equalizing port; 162-internal airway; 163-side airway; 17-a fourth sealing shoulder; 171-oil inlet groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a straightening lengthened walking row pin comprises a rod body 10, wherein a first sealing shaft shoulder 12, a second sealing shaft shoulder 13, a third sealing shaft shoulder 16 and a fourth sealing shaft shoulder 17 are arranged outside the rod body 10, oil inlet grooves 171 are respectively formed in the ports of the first sealing shaft shoulder 12, the second sealing shaft shoulder 13, the third sealing shaft shoulder 16 and the fourth sealing shaft shoulder 17, pressure equalizing ports 161 are respectively formed in the positions, opposite to the ports of the first sealing shaft shoulder 12 and the second sealing shaft shoulder 13, of the outer surfaces of one ends of the first sealing shaft shoulder 12 and the second sealing shaft shoulder 13, and pressure equalizing ports 161 are respectively formed in the positions, opposite to the ports of the first sealing shaft shoulder 12 and the second sealing shaft shoulder 13, of the outer surfaces of one ends of the third sealing shaft shoulder 16 and the fourth sealing shaft shoulder 17.

The pressure equalizing ports 161 penetrate through the other ends of the corresponding first sealing shaft shoulder 12, the second sealing shaft shoulder 13, the third sealing shaft shoulder 16 and the fourth sealing shaft shoulder 17, an inner air passage 162 is formed between the pressure equalizing ports 161 at two ends, the inner air passage 162 is a circular air passage and is provided with a notch for air and liquid ventilation, and when the internal pressure is unstable, the internal air is extruded out to form a liquid storage notch to provide a part of buffering effect; the first sealing shaft shoulder 12, the second sealing shaft shoulder 13, the third sealing shaft shoulder 16 and the fourth sealing shaft shoulder 17 are positioned on two sides of the pressure equalizing port 161 and are also provided with penetrating side air passages 163, and a communicating structure for opening alignment is formed by the pressure equalizing port 161 and the side air passages 163; one end of each of the first seal shaft shoulder 12, the second seal shaft shoulder 13, the third seal shaft shoulder 16 and the fourth seal shaft shoulder 17 is provided with an oil inlet groove 171; the outer surfaces of the first sealing shaft shoulder 12, the second sealing shaft shoulder 13, the third sealing shaft shoulder 16 and the fourth sealing shaft shoulder 17 are all provided with pressure equalizing grooves 11; the upper end of the third sealing shaft shoulder 16 is sleeved with an inner spring 15, and the upper end of the third sealing shaft shoulder 16 is positioned on the outer side of the inner spring 15 and is provided with an outer spring 14.

The working principle is as follows: when using, insert the inside of distributing valve with a plurality of body of rod 10, during the installation, control the notch flow direction of each pressure equalizing mouth 161, guarantee inside the pressure equalizing mouth 161 of a plurality of bodies of rod 10 all is in the air flue of intercommunication, when oil feed tank 171 oil feed, inside high pressure appears, extrude pressure equalizing mouth 161 and the inside gas of limit air flue 163 to the inboard, gas flows in inside, liquid then replaces gas to store in the inside of pressure equalizing mouth 161 and limit air flue 163, stabilize near oil feed tank 171 hydraulic pressure, avoid high pressure impact to lead to damaging, and can form pressure shield after the installation between oil feed tank 171 and pressure equalizing mouth 161 and the limit air flue 163, reach the condition that liquid infiltration just can appear to a certain extent when pressure, during the conventional use, the unable burst of oil pressure blocks, do not influence normal use.

The utility model discloses a round pin is arranged in alignment extension walking adopts following technology:

1. the design uses new frock, makes row round pin focus and axial hole central line now parallel, avoids part slope and extrusion.

2. The sectional carburizing and quenching process reduces martensite transformation quantity, reduces the core hardness and improves the part plasticity on the premise of ensuring the metallographic structure of the part.

3. The sharp corner of the part is changed into a small round corner, so that stress concentration is reduced.

4. And (4) performing thermal straightening on the part with the circular runout higher than the safe deformation.

The utility model discloses a round pin is arranged in alignment extension walking has following technical index:

1. the pin row adopts low-carbon alloy structural steel such as 20CrMnTi, 16CrMn5 and the like to control the core hardness.

2. The hardness of the core is reduced from 35-40HRC to 28-32 HRC.

3. The axial runout is reduced from Max0.5mm to Max0.15mm.

The utility model discloses a round pin utensil is arranged in alignment extension walking has following characteristics:

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a round pin is arranged in alignment extension walking, includes the body of rod (10), first sealed shoulder (12), the sealed shoulder of second (13), the sealed shoulder of third (16) and the sealed shoulder of fourth (17), its characterized in that have been seted up to the outside of the body of rod (10): oil inlet grooves (171) are formed in ports of the first sealing shaft shoulder (12), the second sealing shaft shoulder (13), the third sealing shaft shoulder (16) and the fourth sealing shaft shoulder (17), pressure equalizing ports (161) are formed in positions, opposite to the ports of the first sealing shaft shoulder (12) and the second sealing shaft shoulder (13), of the outer surfaces of one ends of the first sealing shaft shoulder (12) and the second sealing shaft shoulder (13), of the first sealing shaft shoulder (12), and pressure equalizing ports (161) are formed in positions, opposite to the ports of the first sealing shaft shoulder (12) and the second sealing shaft shoulder (13), of the outer surfaces of one ends of the third sealing shaft shoulder (16) and the fourth sealing shaft shoulder (17).

2. The straightening lengthened walking row pin as claimed in claim 1, wherein: a plurality of the pressure equalizing ports (161) are all penetrated through the other ends of the corresponding first sealing shaft shoulder (12), the second sealing shaft shoulder (13), the third sealing shaft shoulder (16) and the fourth sealing shaft shoulder (17), inner air passages (162) are formed between the pressure equalizing ports (161), and the inner air passages (162) are circular air passages.

3. The straightening lengthened walking row pin as claimed in claim 2, wherein: and the first sealing shaft shoulder (12), the second sealing shaft shoulder (13), the third sealing shaft shoulder (16) and the fourth sealing shaft shoulder (17) are positioned on two sides of the pressure equalizing opening (161) and are also provided with penetrating side air passages (163).

4. The straightening lengthened walking row pin as claimed in claim 1, wherein: oil inlet grooves (171) are formed in one ends of the first sealing shaft shoulder (12), the second sealing shaft shoulder (13), the third sealing shaft shoulder (16) and the fourth sealing shaft shoulder (17).

5. The straightening lengthened walking row pin as claimed in claim 1, wherein: pressure equalizing grooves (11) are formed in the outer surfaces of the first sealing shaft shoulder (12), the second sealing shaft shoulder (13), the third sealing shaft shoulder (16) and the fourth sealing shaft shoulder (17).

6. The straightening lengthened walking row pin as claimed in claim 1, wherein: the upper end of the third sealing shaft shoulder (16) is sleeved with an inner spring (15), and the upper end of the third sealing shaft shoulder (16) is positioned on the outer side of the inner spring (15) and is provided with an outer spring (14).