CN211139298U - Vertical pressure-limiting multifunctional protective valve - Google Patents
Vertical pressure-limiting multifunctional protective valve Download PDFInfo
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- CN211139298U CN211139298U CN201921025025.1U CN201921025025U CN211139298U CN 211139298 U CN211139298 U CN 211139298U CN 201921025025 U CN201921025025 U CN 201921025025U CN 211139298 U CN211139298 U CN 211139298U
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Abstract
The utility model discloses a vertical pressure limiting multifunctional protection valve, which comprises a shell, a valve, a common cavity, a double one-way valve, a pressure limiting valve and a one-way valve. The protection valve breaks the design function of the traditional four-loop protection valve, adopts a new design layout, and aims to meet the requirements of the automobile industry on vehicles to implement vehicle starting safety, driving safety, high-low air pressure control, gas source complementation, four-protection valve safety and the like. The novel pneumatic brake vehicle has the advantages of being compact in structure, advanced in internal structure, long in service life, capable of completely satisfying design safety requirements, small in size and low in cost, capable of meeting automobile industry standard requirements and safe use of various pneumatic brake vehicles, capable of reducing the whole vehicle cost of high-end passenger vehicles and trucks and further improving safety and reliability during driving.
Description
Technical Field
The utility model relates to an automobile brake technical field especially relates to vertical pressure limiting multifunctional protection valve.
Background
The four-protection valve is a multi-way ventilation device widely used in the field of automobile braking. The four-protection valve is used for dividing the whole vehicle gas path into four circuits which are connected and independent, when any one circuit has a fault (such as disconnection and leakage), the normal work and inflation of other circuits are not influenced,
for many years, the four-protection valve produced and sold in China always adopts foreign technology, the main structural form of the four-protection valve is not changed greatly, an air inlet, a dryer air outlet and a common cavity of the four-protection valve air inlet are arranged on the same surface of a four-way valve body and communicated with each other, the common cavity leads to each valve cavity, and the valve device is provided with components such as a leather cup, a spring seat, a spring, a gland and the like. When the compressed air sent to the valve from the common cavity reaches the designated pressure, the leather cup is dragged to rise so that the compressed air enters the four pipelines; when one pipeline fails and the pressure is released, the packing cup falls down to seal the pipeline, and the rest pipelines maintain the necessary pressure so as to prevent accidents caused by the pressure loss of the whole system.
However, the four-protection valve with the traditional structure in the prior art is not suitable for the requirement of the air pressure lifting development of modern automobiles, and particularly on large trucks or buses, because the four-protection valve cannot solve the safety problem of driving and starting, after the air pressure of the whole automobile is lifted, the air pressure of the whole automobile cannot be controlled according to the air pressure of the whole automobile, so that the design difficulty is brought to a host factory, high maintenance cost and trouble in the maintenance process are also brought to a user or a manufacturer, and great hidden danger is also brought to the driving safety.
In view of the above, various improved four-way valves have been disclosed in the prior art, including extending four outlet lines and providing a plurality of one-way valves. However, the improved four-protection valve still cannot meet the requirements of the latest automobile safety specifications, and cannot avoid the existing hidden danger in the driving safety.
SUMMERY OF THE UTILITY MODEL
For solving prior art, the atmospheric pressure that the automobile industry can't be satisfied to the vehicle brake of four guarantor valves promotes the requirement, can't guarantee starting safety, driving safety, high low atmospheric pressure control, the complementary problem of original gas, the technical scheme of the utility model as follows:
the utility model provides a vertical pressure limiting multifunctional protection valve, which comprises a shell, a valve and a common cavity which is arranged inside the shell and is communicated with an air compressor, wherein the valve comprises a first valve, a second valve, a third valve and a fourth valve which are symmetrically arranged, and also comprises a double check valve, a pressure limiting valve and a check valve;
the common cavity is respectively communicated with the gas inlets of the first valve and the second valve;
two gas inlets of the double one-way valve are respectively communicated with gas outlets of the first valve and the second valve;
the high-pressure end of the pressure limiting valve is a gas inlet, the low-pressure end of the pressure limiting valve is a gas outlet, the gas inlet of the pressure limiting valve is communicated with the gas outlet of the double one-way valve, the gas outlet of the pressure limiting valve is respectively communicated with the gas inlets of the third valve and the fourth valve, and the gas flow direction of the double one-way valve points to the pressure limiting valve;
further, the check valve includes check valve, valve gap, valve pocket, check valve spring and sealing washer, the check valve sets up the valve aperture, the sealing washer is arranged in upper portion, middle part and the lower part of valve intracavity, the valve aperture can slide in the both sides of middle part sealing washer, the valve gap sets up in the valve pocket lower part, the valve gap has been seted up the valve gap and has been crossed the gas pocket, the valve pocket is seted up the gas vent that crosses the gas pocket intercommunication with the valve gap, first aperture is seted up on the upper portion in the valve pocket, first aperture communicates with the gas outlet of first valve, the middle part of valve pocket is seted up the third aperture, the third aperture communicates with the gas outlet of third valve.
Further, the valve comprises a gland, an adjusting screw, a spring upper seat, a spring lower seat and a leather cup; the gland forms the valve cavity, adjusting screw threaded connection is in the gland, spring upper seat, spring and spring lower seat are connected in the gland, the packing cup and spring lower seat rigid connection just the shutoff lets in the gas inlet of valve.
Further, the pressure limiting valve comprises a main body, a rubber valve, a large spring seat, a pressure limiting valve adjusting screw, a communicating limiting middle body, a small spring and a pressure limiting valve cover; the main body and the pressure limiting valve cover form a pressure limiting valve cavity, the large spring seat and the pressure limiting valve adjusting screw are connected to the upper portion in the main body, the communicating and limiting middle body and the small spring are connected to the lower portion in the main body, and the rubber valve is arranged on the outer side of the communicating and limiting middle body.
Further, the first valve and the second valve are arranged on a first surface of the shell, and the third valve and the fourth valve are arranged on a second surface symmetrical to the first surface.
Further, the check valve is arranged in the middle of the first valve, the second valve, the third valve and the fourth valve.
Further, the device also comprises a high-pressure cavity; the high-pressure cavity is arranged and communicated between the gas inlet of the pressure limiting valve and the gas outlet of the double one-way valve.
Further, the device also comprises a low-pressure cavity; the low-pressure cavity is arranged and communicated between the gas outlet of the pressure limiting valve and the gas inlets of the third valve and the fourth valve.
Furthermore, the vertical pressure-limiting multifunctional protection valve is arranged in a vehicle braking system.
Further, the first valve is communicated with a gas inlet of a control and brake system, and the third valve is communicated with a gas inlet of a spring gas chamber of the rear parking brake.
The utility model provides a vertical pressure limiting multifunctional protection valve compares with prior art, and its beneficial effect is:
the utility model provides a vertical pressure limiting multifunctional protection valve, this protection valve break the design function of four circuit protection valves of tradition, follow the new design overall arrangement, to the vehicle requirement in order to satisfy the automotive industry, carry out vehicle starting safety, driving safety, high low atmospheric pressure control, the gas is complementary, four protect valve safety etc.. The novel pneumatic brake vehicle has the advantages of being compact in structure, advanced in internal structure, long in service life, capable of completely satisfying design safety requirements, small in size and low in cost, capable of meeting automobile industry standard requirements and safe use of various pneumatic brake vehicles, capable of reducing the whole vehicle cost of high-end passenger vehicles and trucks and further improving safety and reliability during driving.
Drawings
FIG. 1 is a front sectional view of the middle vertical pressure-limiting multifunctional protection valve of the present invention;
FIG. 2 is another sectional view of the middle vertical type pressure limiting multifunctional protection valve of the present invention;
FIG. 3 is a side sectional view of the middle vertical type pressure limiting multifunctional protection valve of the present invention;
FIG. 4 is a cross-sectional view of the check valve of the present invention;
fig. 5 is a gas circuit schematic diagram of the middle vertical pressure-limiting multifunctional protection valve of the present invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-4, the vertical pressure-limiting multifunctional protection valve of the present invention comprises a housing 1, a valve, a common cavity 7 formed inside the housing 1 and connected to an air compressor, a two-way valve 4, a pressure-limiting valve 5 and a one-way valve 6, wherein the valve comprises a first valve 21, a second valve 22, a third valve 23 and a fourth valve 24 which are symmetrically arranged; the common chamber 7 communicates with the gas inlets of the first valve 21 and the second valve 22, respectively; the two gas inlets of the double one-way valve 4 are respectively communicated with the gas outlets of the first valve 21 and the second valve 22; the high-pressure end of the pressure limiting valve 5 is a gas inlet, the low-pressure end of the pressure limiting valve 5 is a gas outlet, the gas inlet of the pressure limiting valve 5 is communicated with the gas outlet of the double one-way valve 4, the gas outlet of the pressure limiting valve 5 is respectively communicated with the gas inlets of the third valve 23 and the fourth valve 24, and the gas flow direction of the double one-way valve 4 points to the pressure limiting valve 5; the check valve 6 comprises a valve cover 61, a valve cavity 62, a check valve 63, a check valve spring 64 and a sealing ring 65, wherein the check valve 63 is provided with a check valve small hole 631, the sealing ring 65 is arranged at the upper part, the middle part and the lower part in the valve cavity 62, the valve small hole 631 can slide on two sides of the middle sealing ring 62, the valve cover 61 is provided with a valve cover air passing hole 611, the valve cavity 62 is provided with an air outlet 622 at a position close to the valve cover, the valve cover air passing hole 611 is communicated with the air outlet 622, one end of the valve cavity 62 far away from the valve cover is provided with a first small hole 621, the first small hole 621 is communicated with an air outlet of the first valve, the middle part of the valve cavity 62. The check valve 6 is controlled by the pressure of the first valve to open and close the check valve 6, and the check valve 6 is controlled by the gas source of the third valve, whether the gas source flows out to the exhaust port 622 of the check valve 6 or not is controlled by the pressure of the first valve.
The control process of the check valve 6 is as follows:
when the pressure of the first valve is enough, the air source enters the valve cavity 62 from the first small hole 621, the one-way valve 63 and the spring 64 are compressed, the position of the one-way valve small hole 631 is staggered with that of the third small hole 623, and the air source of the third valve cannot flow out of the air outlet 622 of the one-way valve 6; when the first valve leaks and the gas pressure is reduced, the gas source in the valve cavity 62 flows out from the first small hole 621, the one-way valve 63 moves upward by the restoring force of the spring 64, the one-way valve small hole 631 returns to the position communicated with the third small hole 623, and at the moment, the gas source of the third valve flows out through the third small hole 623, the one-way valve small hole 631, the valve cover air passing hole 611 and the exhaust port 622 in sequence.
The preferred structure of the valve is: the valve comprises a gland 31, an adjusting screw 32, a spring upper seat 33, a spring 34, a spring lower seat 35 and a leather cup 36; the gland 31 forms a valve cavity, the adjusting screw 32 is connected to the gland 31 in a threaded mode, the upper spring seat 33, the spring 34 and the lower spring seat 35 are connected into the gland 31, and the leather cup 36 is rigidly connected with the lower spring seat 35 and blocks a gas inlet which is led into the valve.
The pressure-limiting valve 5 preferably has the following structure: the pressure limiting valve 5 comprises a main body 51, a rubber valve 52, a large spring 53, a large spring seat 54, a pressure limiting valve adjusting screw 55, a communication limiting middle body 56, a small spring 57 and a pressure limiting valve cover 58; the main body 51 and the pressure-limiting valve cover 58 form a cavity of the pressure-limiting valve 5, the large spring 53, the large spring seat 54 and the pressure-limiting valve adjusting screw 55 are connected to the inner upper part of the main body 51, the communication limiting middle body 56 and the small spring 57 are connected to the inner lower part of the main body 51, and the rubber valve 52 is arranged on the outer side of the communication limiting middle body 56.
The first valve 21 and the second valve 22 are provided on a first surface of the housing 1, and the third valve 23 and the fourth valve 24 are provided on a second surface symmetrical to the first surface. Pressure-limiting valve 5 sets up in the other of four valves, and check valve 6 sets up in the middle of the gas outlet of four valves, and the gas outlet of check valve 6 sets up between two gas outlets of first valve 21 and third valve 23, and four traditional guarantor valves set up four valves in the same side of valve body, and do not consider having meticulous relation of connection between four valves, the utility model relates to a mainly be under the prerequisite of guaranteeing all functions, be convenient for arrange pressure-limiting valve 5 and check valve 6 between the valve, make the whole volume that reduces of device, on the basis of the installation of being convenient for, reduce the manufacturing degree of difficulty, improve the yield.
The vertical pressure-limiting multifunctional protection valve further comprises a high-pressure cavity 8, and the high-pressure cavity 8 is formed in and communicated between a gas inlet of the pressure-limiting valve 5 and a gas outlet of the double one-way valve 4; also includes a low pressure chamber; the low pressure chamber 9 is open and communicates between the gas outlet of the pressure limiting valve 5 and the gas inlets of the third valve 23 and the fourth valve 24.
The vertical pressure-limiting multifunctional protection valve is arranged in a vehicle braking system.
The first valve 21 communicates with the gas inlet of the control and braking system and the third valve 23 communicates with the gas inlet of the spring 34 gas chamber of the rear parking brake.
As shown in fig. 5, the arrows indicate the gas flow direction. The utility model discloses a multi-functional protection valve of vertical voltage limiting's theory of operation as follows:
the first valve 21 of the vertical pressure-limiting multifunctional protection valve is connected with a control and brake system, and the third valve 23 is connected with a spring 34 gas chamber of a rear parking brake. When compressed air enters the common chamber 7, the compressed air is delivered to the first valve 21 and the second valve 22 through the common chamber 7. When the air pressure reaches a set pressure value, the leather cup 36 of the valve is pushed away, compressed air enters a valve cavity middle pipeline of the valve, the middle one-way valve 6 is pushed away, the gas source enters the high-pressure cavity 8, the gas source enters the outer surface of a main body 51 of the pressure limiting valve 5 and the rubber valve 52 through a gas inlet of the pressure limiting valve 5, the gas source pushes away the rubber valve 52, the gas source enters a gas outlet of the pressure limiting valve 5 and then enters the low-pressure cavity 9, and the gas source pushes away the third valve 23, the fourth valve 24 and the gas source.
When the control system leaks, the air pressure of the first valve 21 drops to below 0.4MPa (to be balanced with the atmospheric pressure), the one-way valve 6 opens the air source of the third valve 23, the air source of the third valve 23 is exhausted through the air outlet of the one-way valve 6, the vehicle is in a control failure state due to the loss of power of the control system, the air source of the third valve 23 needs to be exhausted from the air outlet 622 of the one-way valve 6 through the one-way valve 6, and the parking brake is automatically braked.
Because the high pressure cavity 8 of the first valve 21 and the second valve 22 is controlled to be high air pressure by the pressure limiting valve 5 and communicated with the air inlet of the pressure limiting valve 5, the air pressure entering the low pressure cavity 9 is controlled to be low air pressure by the pressure limiting valve 5 through the main body 51 of the pressure limiting valve 5 and the rubber valve 52 and through the air outlet of the pressure limiting valve 5, and then the third valve 23 and the fourth valve 24 are communicated, and the rear spring 34 air chamber can maintain the rated pressure of the second valve 22 and the fourth valve 24, namely the original atmosphere of the first valve 21 and the second valve 22, and can be supplemented to the third valve 23 and the fourth valve 24 through the pressure limiting valve 5 in the continuous braking process. However, the gas sources of the third valve 23 to the fourth valve 24 are limited by the one-way opening of the pressure limiting valve 5, and the gas sources of the first valve 21 to the second valve 22 cannot be supplemented.
Through the utility model discloses a vertical multi-functional protection valve, when car control system breaks down, can rely on mechanical parts accuracy, timely, realize the brake action reliably completely, furthest avoids the occurence of failure, has improved the various security of vehicle.
Further, the utility model discloses a vertical multi-functional protection valve still has to first, two, three, the atmospheric pressure of four valves carries out balanced adjusting pressure, can be individual solitary pressure that sets up one by one, also can be that two valves set up a pressure respectively. The high and low air pressure of the first valve 21, the second valve 22 and the third valve 23, the fourth valve 24 can be controlled by pressure limiting.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The vertical pressure-limiting multifunctional protection valve comprises a shell, a valve and a common cavity which is arranged in the shell and communicated with an air compressor, wherein the valve comprises a first valve, a second valve, a third valve and a fourth valve which are symmetrically arranged;
the common cavity is respectively communicated with the gas inlets of the first valve and the second valve;
two gas inlets of the double one-way valve are respectively communicated with gas outlets of the first valve and the second valve;
the high-pressure end of the pressure limiting valve is a gas inlet, the low-pressure end of the pressure limiting valve is a gas outlet, the gas inlet of the pressure limiting valve is communicated with the gas outlet of the double one-way valve, the gas outlet of the pressure limiting valve is respectively communicated with the gas inlets of the third valve and the fourth valve, and the gas flow direction of the double one-way valve points to the pressure limiting valve;
the check valve comprises a check valve body, a valve cover, a valve cavity, a check valve spring and a sealing ring, wherein the check valve body is provided with a valve small hole, the sealing ring is arranged at the upper portion, the middle portion and the lower portion of the valve cavity, the valve small hole can slide on two sides of the sealing ring at the middle portion, the valve cover is arranged at the lower portion of the valve cavity, the valve cover is provided with a valve cover air passing hole, the valve cavity is provided with an air exhaust port communicated with the valve cover air passing hole, the upper portion of the valve cavity is provided with a first small hole communicated with an air outlet of the first valve, the middle portion of the valve cavity is provided with a third small hole communicated with an air outlet.
2. The vertical pressure-limiting multifunctional protection valve according to claim 1, wherein the valve comprises a gland, an adjusting screw, an upper spring seat, a spring, a lower spring seat and a leather cup; the gland forms the valve cavity, adjusting screw threaded connection is in the gland, spring upper seat, spring and spring lower seat are connected in the gland, the packing cup and spring lower seat rigid connection just the shutoff lets in the gas inlet of valve.
3. The vertical pressure-limiting multifunctional protection valve as claimed in claim 1, wherein the pressure-limiting valve comprises a main body, a rubber valve, a large spring seat, a pressure-limiting valve adjusting screw, a communicating limiting middle body, a small spring and a pressure-limiting valve cover; the main body and the pressure limiting valve cover form a pressure limiting valve cavity, the large spring seat and the pressure limiting valve adjusting screw are connected to the upper portion in the main body, the communicating and limiting middle body and the small spring are connected to the lower portion in the main body, and the rubber valve is arranged on the outer side of the communicating and limiting middle body.
4. The vertical pressure-limiting multifunctional protection valve as claimed in claim 1, wherein the first valve and the second valve are disposed on a first surface of the housing, and the third valve and the fourth valve are disposed on a second surface symmetrical to the first surface.
5. The vertical pressure limiting multifunctional protection valve according to claim 1, wherein the one-way valve is disposed at the middle of the first valve, the second valve, the third valve and the fourth valve.
6. The vertical pressure limiting multifunctional protection valve according to claim 1, further comprising a high pressure chamber; the high-pressure cavity is arranged and communicated between the gas inlet of the pressure limiting valve and the gas outlet of the double one-way valve.
7. The vertical pressure limiting multifunctional protection valve according to claim 1, further comprising a low pressure chamber; the low-pressure cavity is arranged and communicated between the gas outlet of the pressure limiting valve and the gas inlets of the third valve and the fourth valve.
8. Vertical pressure-limiting multifunctional protection valve according to any of claims 1 to 7, characterized in that it is provided in a vehicle braking system.
9. The vertical pressure limiting multifunctional protection valve according to claim 8, wherein the first valve is communicated with a gas inlet of a control and brake system, and the third valve is communicated with a gas inlet of a spring gas chamber of a rear parking brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921025025.1U CN211139298U (en) | 2019-07-03 | 2019-07-03 | Vertical pressure-limiting multifunctional protective valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921025025.1U CN211139298U (en) | 2019-07-03 | 2019-07-03 | Vertical pressure-limiting multifunctional protective valve |
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| Publication Number | Publication Date |
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| CN211139298U true CN211139298U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921025025.1U Active CN211139298U (en) | 2019-07-03 | 2019-07-03 | Vertical pressure-limiting multifunctional protective valve |
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| CN (1) | CN211139298U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111907506A (en) * | 2020-08-18 | 2020-11-10 | 湖北力美制动元件有限公司 | Multi-loop protection valve for automobile braking system |
-
2019
- 2019-07-03 CN CN201921025025.1U patent/CN211139298U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111907506A (en) * | 2020-08-18 | 2020-11-10 | 湖北力美制动元件有限公司 | Multi-loop protection valve for automobile braking system |
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