CN219295382U

CN219295382U - Triple electromagnetic valve and wheel type excavator braking system thereof

Info

Publication number: CN219295382U
Application number: CN202223607938.9U
Authority: CN
Inventors: 井然; 马腾飞; 任光梅; 刘贵申; 荆玉涛; 郭志学; 宋旭东; 于志伟; 张贵全; 梁继山; 孙志远
Original assignee: Shandong Lingong Construction Machinery Co Ltd
Current assignee: Shandong Lingong Construction Machinery Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-07-04
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a triple electromagnetic valve and a wheel type excavator braking system thereof, and belongs to the technical field of engineering machinery. The brake system for the traditional wheel excavator overcomes the defects of more elements, complex principle and higher design cost of a brake system of the traditional wheel excavator in the prior art. The main structure of the device comprises an air compressor, an air storage tank, a brake master valve, a relay valve, a quick release valve I and a triple electromagnetic valve, wherein an air inlet of the air storage tank is connected with the air compressor, an air outlet of the air storage tank is connected with the brake master valve, the brake master valve is connected with a k1 port of the relay valve, the relay valve is characterized in that an a1 port of the relay valve is connected with a triple electromagnetic valve, a b1 port of the relay valve is connected with a quick release valve I, the quick release valve I is connected with a front axle air chamber and a rear axle air chamber respectively, the triple electromagnetic valve is connected with a rotary valve booster cylinder and a quick release valve II respectively, and the quick release valve II is also connected with the rear axle air chamber. The utility model is mainly used for engineering machinery such as an excavator and the like.

Description

Triple electromagnetic valve and wheel type excavator braking system thereof

Technical Field

The utility model belongs to the technical field of engineering machinery, and particularly relates to a triple electromagnetic valve and a wheel type excavator braking system thereof.

Background

The wheel excavator has the characteristics of convenient transition, no damage to the road surface and the like, is more and more widely applied to places such as engineering construction, municipal construction and the like, and the gas path system is used as an important component of the wheel excavator to directly relate to the safety, comfort, reliability and the like of the whole machine, so that the design of the gas path system is closely related to the design level of the whole machine.

Currently, wheel-type mechanical air path systems are mainly used for machine braking. Braking systems typically include air compressors, dryers, air circuit filters, brake valves, air tanks, piping and other associated accessories, although relatively lower in cost than hydraulic systems, but with a greater number of components and a complex principle. The complex system is only used for braking of the machine, is wasted in various aspects such as design cost, whole machine arrangement and the like, is greatly influenced by the cleanliness of the system and the environment, and has a certain influence on the use of the machine due to the failure problem caused by the fact that the cleanliness does not reach the standard. In addition, the patent with the application number of 202021146807.3 discloses a wheel type excavator air path system, oil-water components in the air path system are not thoroughly removed, and if a triple electromagnetic valve in the air path system suddenly and sporadically breaks down, the air path system is easy to fail.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a triple electromagnetic valve and a wheel type excavator braking system thereof, which have the emergency manual operation function, so that the service performance and stability of a gas circuit of the whole machine are improved, and meanwhile, the use reliability and safety of a machine are improved.

In order to achieve the above purpose, the present utility model is realized by adopting the following technical scheme:

the utility model provides a triple solenoid valve, includes the valve body, be equipped with three solenoid valves on the valve body, the structure of every solenoid valve of group is the same, all includes coil housing, spring and case, coil housing installs on the valve body, and spring and case are all installed in the coil housing, and the spring housing is on the case, and the tip of case passes through the packing ring and installs on the valve body, and the side of valve body is equipped with the gassing round pin mounting groove, installs the gassing round pin in the gassing round pin mounting groove.

Preferably, the coil housing is also provided with a limit dust cap, the valve core is provided with a groove, and the end part of the limit dust cap positioned in the coil housing is communicated with the valve core through the groove.

Preferably, the gasket communicates with the air release pin through an air release pin mounting groove.

Preferably, one end of the air release pin is provided with a notch or a bulge.

Preferably, the indentations or protrusions are semi-circular in configuration.

The utility model provides a wheeled excavator braking system, includes air compressor, gas holder, brake master valve, relay valve and quick release valve one, the air inlet of gas holder is connected with air compressor, and the gas outlet is connected with brake master valve, wheeled excavator braking system still includes the trigeminy solenoid valve as defined in any one of the above, and brake master valve is connected with the k1 mouth of relay valve, and the a1 mouth of relay valve is connected with the trigeminy solenoid valve, and b1 mouth is connected with quick release valve one, and quick release valve one is connected with front axle air chamber and rear axle air chamber respectively, and the trigeminy solenoid valve is connected with rotary valve helping hand cylinder and quick release valve two respectively, and quick release valve two still is connected with the rear axle air chamber.

Preferably, the brake master valve is connected with the k1 port of the relay valve through a two-way check valve, and the b2 port of the two-way check valve is connected with a triple electromagnetic valve.

Preferably, a multifunctional dryer is arranged between the air compressor and the air storage tank.

Preferably, an oil-water separator or a condenser is arranged between the air compressor and the multifunctional dryer.

Preferably, a pipeline filter is arranged between the air storage tank and the brake master valve, and an air filter is arranged in front of an air inlet of the air compressor.

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

1. the gasket is jacked up by rotating the air release pin, the valve core and the valve body are separated in a sealing way by the tilting of the gasket, the air release process can be finished, or the valve core and the limiting dust cap are separated in a sealing way by adjusting the rotating-out limiting dust cap, and the air release process is finished by the groove gap, so that the three-way electromagnetic valve is subjected to accidental faults through the adjustment of the limiting dust cap and the air release pin, the emergency use function of a short-time complete machine is met, and the emergency use function in the accidental failure process is realized;

2. an oil-water separator and/or a condenser are added in a wheel type excavator braking system, so that oil-water components of a gas circuit system are removed as much as possible, the cleanliness of the gas circuit system is purified, and the stability of the system is improved;

in summary, the system has an emergency manual operation function through the triple electromagnetic valve in the wheel type excavator braking system, and the cleanliness of the air circuit system is purified through the oil-water separator and/or the condenser, so that the service performance and stability of the air circuit of the whole machine are improved, and the reliability and safety of the machine are improved.

Drawings

FIG. 1 is a schematic diagram of a triple solenoid valve;

FIG. 2 is an exploded view of a triple solenoid valve;

FIG. 3 is a cross-sectional view of one set of solenoid valves in a triple solenoid valve;

FIG. 4 is a schematic diagram of the structure of the valve element in the triple solenoid valve;

FIG. 5 is a schematic view of the configuration of the bleed pin in the triple solenoid valve;

FIG. 6 is a pneumatic system diagram of a wheel excavator brake system;

fig. 7 is a partial enlarged view at G in fig. 6.

In the figure: 1. an air filter; 2. an air compressor; 3. an oil-water separator; 4. a condenser; 5. a multifunctional dryer; 6. a gas storage tank; 7. a pipeline filter; 8. a brake master valve; 9. a two-way check valve; 10. a relay valve; 11. a triple electromagnetic valve; 12. a front axle air chamber; 13. a quick release valve I; 14. a rotary valve boosting cylinder; 15. a rear axle air chamber; 16. a quick release valve II; 21. a limit dust cap; 22. a coil housing; 23. a spring; 24. a valve core; 25. a gasket; 26. a valve body; 27. a deflation pin; 28. a groove; 29. an air release pin mounting groove; 30. and (5) a notch.

Detailed Description

The utility model will now be further illustrated by means of specific examples in connection with the accompanying drawings.

Example 1:

as shown in fig. 1-3, a triple electromagnetic valve comprises a valve body 26, wherein three groups of electromagnetic valves are arranged on the valve body 26, each group of electromagnetic valves has the same structure and comprises a coil shell 22, a spring 23 and a valve core 24, the coil shell 22 is arranged on the valve body 26, the spring 23 and the valve core 24 are arranged in the coil shell 22, the spring 23 is sleeved on the valve core 24, the end part of the valve core 24 is arranged on the valve body 26 through a gasket 25, a deflation pin mounting groove 29 is formed in the side edge of the valve body 26, and a deflation pin 27 is arranged in the deflation pin mounting groove 29.

Example 2:

as shown in fig. 4, in the triple electromagnetic valve, the coil housing 22 is further provided with a limit dust cap 21, the valve core 24 is provided with a groove 28, and the end part of the limit dust cap 21 located inside the coil housing 22 is communicated with the valve core 24 through the groove 28.

The washer 25 communicates with the air release pin 27 through an air release pin mounting slot 29.

As shown in fig. 5, one end of the air release pin 27 is provided with a notch 30 or a protrusion, the notch 30 or the protrusion is in a semicircular structure, and the notch 30 or the protrusion may be any structure as long as the gasket 25 can be lifted up after the air release pin 27 rotates, and in this embodiment, one end of the air release pin 27 is in the semicircular structure of the notch 30. The other parts are the same as in example 1.

The emergency operation principle of embodiment 2 is:

when the valve core 24 cannot move upwards due to failure of the coil housing 22, the valve core 24 cannot be separated from the valve body 26 in a sealing manner, and the exhaust process in the valve body 26 cannot be completed, the air release pin 27 can be rotated by a tool, the front part of the air release pin 27 is of a semicircular structure, the gasket 25 can be lifted up through rotation, and the valve core 24 can be separated from the valve body 26 in a sealing manner due to tilting of the gasket 25, so that the exhaust process can be completed. Similarly, when the valve core 24 cannot move downwards due to the failure of the spring 23, the valve core 24 and the limiting dust cap 21 can be separated in a sealing way by adjusting the rotation of the limiting dust cap 21, and the exhaust process can be completed through the gap of the groove due to the groove 28 at the top of the valve core 24. The adjustment of the limiting dustproof cap 21 and the air release pin 27 is used for coping with accidental faults of the triple electromagnetic valve, so that the emergency use function of the whole machine in a short time is met.

Example 3:

as shown in fig. 6-7, the wheel excavator braking system comprises an air compressor 2, an air storage tank 6, a brake master valve 8, a relay valve 10 and a quick release valve I13, wherein an air inlet of the air storage tank 6 is connected with the air compressor 2, an air outlet of the air storage tank is connected with the brake master valve 8, the wheel excavator braking system further comprises a triple electromagnetic valve 11 as described in embodiment 1 or embodiment 2, the brake master valve 8 is connected with a k1 port of the relay valve 10, an a1 port of the relay valve 10 is connected with a total air inlet A of the triple electromagnetic valve 11, a b1 port of the relay valve 10 is connected with a quick release valve I13, the quick release valve I13 is respectively connected with a front axle air chamber 12 and a rear axle air chamber 15, the triple electromagnetic valve 11 is respectively connected with a rotary valve booster cylinder 14 and a quick release valve II 16, and the quick release valve II 16 is also connected with the rear axle air chamber 15.

Example 4:

a brake system of a wheel type excavator is characterized in that a brake master valve 8 is connected with a k1 port of a relay valve 10 through a two-way check valve 9, and a b2 port of the two-way check valve 9 is connected with a triple electromagnetic valve 11. The triple electromagnetic valve 11 comprises an a-linkage electromagnetic valve, a B-linkage electromagnetic valve and a c-linkage electromagnetic valve, namely, the air outlet B of the a-linkage electromagnetic valve is connected with the B2 port of the double-way check valve 9, the air outlet of the B-linkage electromagnetic valve is connected with the rotary valve assisting cylinder 14, and the air outlet of the c-linkage electromagnetic valve is connected with the quick release valve II 16.

A multifunctional dryer 5 is arranged between the air compressor 2 and the air storage tank 6.

An oil-water separator 3 or a condenser 4 is arranged between the air compressor 2 and the multifunctional dryer 5.

A pipeline filter 7 is arranged between the air storage tank 6 and the brake master valve 8, and an air filter 1 is arranged in front of an air inlet of the air compressor 2. The other portions are the same as in example 3.

The working principle of the embodiment 4 in the utility model is as follows:

air in the environment is changed into compressed air through an air filter 1 under the action of an air compressor 2, enters an air storage tank 6 through an oil-water separator 3 or a condenser 4 and then a multifunctional dryer 5, and reaches a brake master valve 8 and a triple electromagnetic valve 11 through a pipeline filter 7:

1) When the vehicle needs to be braked during running: the brake master valve 8 (brake pedal) is depressed, compressed air enters the k1 port of the relay valve 10 from the brake master valve 8 through the two-way check valve 9, so that the a1 port and the b1 port of the relay valve 10 are communicated, and the compressed air enters the rear axle air chamber 15 and the front axle air chamber 12 through the quick release valve I13 to realize braking;

2) When the swing cylinder of the bridge needs to be locked: opening a leveling control button in the cab, electrifying an electromagnet b in the triple electromagnetic valve 11, enabling compressed air to enter a large cavity of a rotary valve assisting cylinder 14 through the triple electromagnetic valve 11, and enabling a cylinder piston rod to extend outwards to push the rotary valve to cut off a communication pipeline of the swing cylinder so as to realize leveling locking; when the leveling control button is closed, the electromagnet b is powered off and reset, compressed air is cut off, the large cavity of the rotary valve assisting cylinder 14 is unloaded, the piston rod of the rotary valve assisting cylinder 14 is reset under the action of a reset spring, and the rotary valve is pushed to enable the leveling oil cylinder pipeline to be communicated, so that leveling locking is released;

3) Electric lock energization and parking brake release combined control function: when the electric lock switch in the cab is electrified, the electromagnet c in the triple electromagnetic valve 11 is electrified, the small cavity air channel of the rear axle air chamber 15 is ventilated, compressed air presses the air chamber reset spring, the piston rod of the air chamber reset spring is retracted under the action of pressure, and the braking mechanism is driven to realize the braking release of the rear axle.

The above function is still provided by the air reservoir 6 when the engine is turned off, the air compressor 2 fails or other components fail to cause the air supply to be lost.

When the triple electromagnetic valve 11 fails and electromagnetic control switching cannot be performed, manual transposition switching can be performed so as to cope with accidental faults and meet the emergency use function of the whole machine in a short time.

Claims

1. A triple solenoid valve comprising a valve body (26), characterized in that: three groups of electromagnetic valves are arranged on the valve body (26), the structures of each group of electromagnetic valves are the same, each electromagnetic valve comprises a coil shell (22), a spring (23) and a valve core (24), the coil shells (22) are arranged on the valve body (26), the springs (23) and the valve cores (24) are arranged in the coil shells (22), the springs (23) are sleeved on the valve cores (24), the end parts of the valve cores (24) are arranged on the valve body (26) through gaskets (25), air release pin mounting grooves (29) are formed in the side edges of the valve body (26), and air release pins (27) are arranged in the air release pin mounting grooves (29).

2. The triple solenoid valve of claim 1 wherein: the coil housing (22) is also provided with a limiting dustproof cap (21), the valve core (24) is provided with a groove (28), and the end part of the limiting dustproof cap (21) positioned inside the coil housing (22) is communicated with the valve core (24) through the groove (28).

3. The triple solenoid valve of claim 1 wherein: the gasket (25) communicates with the air release pin (27) through an air release pin mounting groove (29).

4. The triple solenoid valve of claim 1 wherein: one end of the air release pin (27) is provided with a notch (30) or a bulge.

5. The triple solenoid valve according to claim 4, wherein: the notch (30) or the bulge is of a semicircular structure.

6. The utility model provides a wheeled excavator braking system, includes air compressor (2), gas holder (6), brake master valve (8), relay valve (10) and quick release valve one (13), the air inlet of gas holder (6) is connected with air compressor (2), and the gas outlet is connected with brake master valve (8), its characterized in that: the wheel excavator braking system further comprises a triple electromagnetic valve (11) according to any one of claims 1-5, wherein the brake master valve (8) is connected with a k1 port of the relay valve (10), a1 port of the relay valve (10) is connected with the triple electromagnetic valve (11), b1 port of the relay valve is connected with a quick release valve I (13), the quick release valve I (13) is respectively connected with a front axle air chamber (12) and a rear axle air chamber (15), the triple electromagnetic valve (11) is respectively connected with a rotary valve booster cylinder (14) and a quick release valve II (16), and the quick release valve II (16) is also connected with the rear axle air chamber (15).

7. The wheel excavator braking system of claim 6 wherein: the brake master valve (8) is connected with the k1 port of the relay valve (10) through the two-way check valve (9), and the b2 port of the two-way check valve (9) is connected with the triple electromagnetic valve (11).

8. The wheel excavator braking system of claim 7 wherein: a multifunctional dryer (5) is arranged between the air compressor (2) and the air storage tank (6).

9. The wheel excavator braking system of claim 8 wherein: an oil-water separator (3) or a condenser (4) is arranged between the air compressor (2) and the multifunctional dryer (5).

10. The wheel excavator braking system of claim 9 wherein: a pipeline filter (7) is arranged between the air storage tank (6) and the brake master valve (8), and an air filter (1) is arranged in front of an air inlet of the air compressor (2).