CN210852418U - Double-relay valve of full hydraulic braking system - Google Patents
Double-relay valve of full hydraulic braking system Download PDFInfo
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- CN210852418U CN210852418U CN201921994670.4U CN201921994670U CN210852418U CN 210852418 U CN210852418 U CN 210852418U CN 201921994670 U CN201921994670 U CN 201921994670U CN 210852418 U CN210852418 U CN 210852418U
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Abstract
The utility model discloses a double relay valve of a full hydraulic brake system, which comprises a cover plate, a pressing plate, a first valve body and a second valve body which are arranged from left to right in sequence, wherein the cover plate, the pressing plate and the first valve body are fixedly connected, and the first valve body and the second valve body are fixedly connected; the brake pressure is improved through the rapid reaction of the relay valves, and then the brake pressure is transmitted into the brake mechanism, so that the brake can obtain corresponding brake pressure and flow as required, and the problems that the brake pressure is insufficient due to pressure drop caused by overlong pipelines, the brake delay is delayed, and the driving safety is influenced are solved.
Description
Technical Field
The utility model relates to a relay valve technical field especially relates to a two relay valves of full hydraulic braking system.
Background
The mining dump truck has the advantages of high operation efficiency, relatively low operation cost and the like, and is widely applied to large-scale surface mine transportation operation. However, the mining dump truck has a large dead weight, a large weight after full load, which can reach several hundred tons, and a high traveling speed, which can reach about 60km/h, and has a severe traveling environment and road conditions and frequent braking, so that the braking system of the dump truck is required to be very safe and reliable, and the traditional air brake system can not meet the use requirements at all.
The full hydraulic braking system has the advantages of high braking pressure, high response speed, more reliable braking effect and the like due to the use of a main engine power source, is widely applied to wheel type engineering machinery at present, and is the best choice for the mining dump truck due to the use of the full hydraulic braking system. However, the mining dump truck is large in size and long in distance from a cab to each hub, when full hydraulic braking is adopted, pressure from a brake pedal (or a handle) to a brake actuating mechanism is reduced due to overlong pipelines, so that the braking force is insufficient, braking delay is generated, and the driving safety is influenced.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a two relay valves of full hydraulic braking system adopts different relay valves, through the relay valve fast reaction, in the arrestment mechanism of reentrant after improving the brake pressure proportion, makes the stopper obtain corresponding brake pressure and flow as required, avoids pressure to produce pressure drop because the pipeline overlength and leads to the brake force not enough and the braking delay, influences driving safety, has the advantage of factor of safety height, low cost, quick response.
On one hand, the utility model provides a full hydraulic braking system double relay valve, including apron, clamp plate, first valve body and the second valve body that sets gradually from left to right, apron, clamp plate and first valve body fixed connection, first valve body and second valve body fixed connection;
the valve comprises a first valve body, a second valve body, a first valve core, a second valve core, a first spring, a second spring and a sleeve, wherein two main cavity holes are formed in the first valve body, a valve sleeve, a spring seat, the first spring, the second spring and the sleeve are arranged in one main cavity hole, one end of the valve sleeve is connected with a pressing plate, the other end of the valve sleeve is connected with one end of the spring seat through the first valve core, the other end of the spring seat is connected with the sleeve through a push rod plunger, the push rod plunger is arranged in an inner hole of the sleeve, the first spring and the second spring are coaxially sleeved on the spring seat, the radial diameter of the second spring is larger than that of the first spring, the first valve core is arranged in the valve sleeve, the; the two main cavities are arranged in the same way as the one main cavity;
the second valve body is provided with a control oil duct PX, the push rod plunger is communicated with the control oil duct PX, a B1 port and a P1 port are formed in a valve sleeve arranged in one main cavity, a B2 port and a P1 port are formed in valve sleeves arranged in two main cavity holes, and a T port is formed in the first valve body.
Furthermore, the double relay valve of the full hydraulic braking system further comprises a first O-shaped sealing ring and a rectangular sealing ring, the rectangular sealing ring is arranged on the annular contact surface of the pressure plate and the first valve body, and the first O-shaped sealing ring is arranged on the annular contact surface of the second valve body and the first valve body.
Furthermore, a first annular sealing groove is formed in a contact surface, connected with the first valve body, of the sleeve, and a second O-shaped sealing ring and a first check ring are arranged in the first annular sealing groove.
Furthermore, the valve sleeve is at least provided with two shoulders with different excircle sizes along the radial direction, each shoulder is provided with a second annular sealing groove, and each second annular sealing groove is provided with a third retaining ring and a fourth O-shaped sealing ring.
Further, the inner portions of two of the main cavity holes and the inner portion of one of the main cavity holes are arranged symmetrically with respect to an axis of the first valve body extending in the left-right direction.
Furthermore, an annular groove a is formed in the pressure plate, and is used for communicating the left cavity d of the valve sleeves installed in the two main cavity holes and communicating with an oil drainage hole L formed in the first valve body, and the oil drainage hole L is communicated with the T port.
Furthermore, the first valve core arranged in one of the main cavity holes is provided with an oil hole c and an inner cavity B1, the first valve core arranged in the two main cavity holes is provided with an oil hole c and an inner cavity B2, and pressure oil of the ports B1 and B2 respectively enters the inner cavities B1 and B2 of the first valve core through the oil hole c.
Furthermore, the double relay valve of the full hydraulic braking system further comprises a first screw and a second screw, the second valve body is connected to the first valve body through the first screw, and the cover plate and the pressure plate are connected to the first valve body through the second screw.
Further, the full hydraulic braking system double relay valve further comprises a first spring washer and a second spring washer: the first spring washer is fixedly arranged on the right end face of the second valve body through a first screw; and the second spring washer is fixedly arranged on the left end surface of the cover plate through a second screw.
Furthermore, a first plug and a second plug are arranged on the second valve body, the first plug is installed at the bottom of the second valve body, and the second plug is installed on the right end face of the second valve body.
The utility model provides a full hydraulic braking system double relay valve, which comprises a cover plate, pressing plates, first valve body, the second case, first case, the third spring, the spring holder, first spring, the second spring, the push rod plunger, a sleeve, the second valve body, the valve barrel, accessible relay valve fast reaction, in the quick conveying of the large-traffic braking hydraulic oil of high pressure of proportional to the stopper around to, and can be according to the difference of front and back wheel brake pressure, adopt different relay valve, pass into arrestment mechanism again after improving brake pressure ratio example, make the stopper can obtain corresponding brake pressure and flow as requested, avoid pressure to lead to the brake force not enough and braking delay because pipeline overlength and pressure drop, influence driving safety, high safety factor, low cost, quick response's advantage.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural diagram of a double relay valve of a full hydraulic braking system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a double relay valve of a full hydraulic braking system according to an embodiment of the present invention.
Wherein: 1-cover plate, 2-pressure plate, 3-first valve body, 4-second valve core, 5-first valve core, 6-third spring, 7-spring seat, 8-first spring, 9-second spring, 10-push rod plunger, 11-sleeve, 12-first plug, 13-first screw and 14-first spring washer, 15-a second plug, 16-a second valve body, 17-a first O-shaped sealing ring, 18-a second O-shaped sealing ring, 19-a first retainer ring, 20-a third O-shaped sealing ring, 21-a second retainer ring, 22-a fourth O-shaped sealing ring, 23-a third retainer ring, 24-a valve sleeve, 25-a fifth O-shaped sealing ring, 26-a rectangular sealing ring, 27-a second screw and 28-a second spring washer.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In the present invention, the terms "left", "right", "top", "bottom", "inner", "outer", "upper", "lower", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in fig. 1, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the scope of the present invention; meanwhile, the terms "first" and "second" are mainly used to distinguish different components, but do not specifically limit the components.
Fig. 1 is a schematic structural diagram of a double relay valve of a full hydraulic braking system according to an embodiment of the present invention. Fig. 2 is a schematic diagram of a double relay valve of a full hydraulic braking system according to an embodiment of the present invention.
As shown in fig. 1 and fig. 2, a full hydraulic brake system double relay valve is provided with a cover plate 1, a pressure plate 2, a first valve body 3 and a second valve body 16 from left to right in sequence, the cover plate 1, the pressure plate 2 and the first valve body 3 are fixedly connected, and the first valve body 3 and the second valve body 16 are fixedly connected: specifically, two main cavity holes are arranged in the first valve body 3, a valve sleeve 24, a spring seat 7, a first spring 8, a second spring 9 and a sleeve 11 are arranged in one main cavity hole, the left end of the valve sleeve 24 is connected with the pressure plate 2, the right end of the valve sleeve is connected with the left end of the spring seat 7 through the first valve core 5, the right end of the first valve core 5 is preferably clamped at the left end of the spring seat 7, the right end of the spring seat 7 is connected with the sleeve 11 through a push rod plunger 10, meanwhile, the push rod plunger 10 is arranged in an inner hole of the sleeve 11, the first spring 8 and the second spring 9 are coaxially sleeved on the spring seat 7, the second spring 9 is used for limiting, the radial diameter of the second spring is larger than that of the first spring 8, the first valve core 5 is arranged in the valve sleeve 24, a second valve core 4 and a third spring 6 are arranged in an inner cavity of the first valve core 5, the third spring 6 is used for resetting, the other end of the spring is contacted with a third spring 6; the two main cavities are arranged in the same way as the main cavity, namely, a valve sleeve 24, a spring seat 7, a first spring 8, a second spring 9, a sleeve 11, a first valve core 5, a push rod plunger 10, a second valve core 4 and a third spring 6 are also arranged in the two main cavities, and the components are arranged in the same way as the components of the main cavity; meanwhile, a control oil duct PX is arranged on the second valve body 16, the push rod plunger 10 is communicated with the control oil duct PX, a B1 port and a P1 port are formed in the valve sleeve 24 arranged in one main cavity, a B2 port and a P1 port are formed in the valve sleeve 24 arranged in two main cavities, and a T port is formed in the first valve body 3: when the P1 port enters pressure oil, the B1 port and the B2 port are communicated with the T port respectively; when the control oil passage PX enters pressure oil, the port B1 and the port B2 are respectively communicated with the port P1 and are not communicated with the port T. Preferably, the two main holes and the one main hole are symmetrically arranged along the axis extending in the left-right direction of the first valve body 3. The sectional areas of the second spool 4 and the plunger 10 are set to be different in proportion according to the magnitude of the braking force.
In a further technical scheme, the double relay valve of the full hydraulic brake system further comprises a first screw 13, a first spring washer 14, a second screw 27 and a second spring washer 28, the second valve body 16 is connected to the first valve body 3 through the first screw 13, the first spring washer 14 is fixedly arranged on the right end face of the second valve body 16 through the first screw 13, meanwhile, the cover plate 1 and the pressure plate 2 are connected to the first valve body 3 through the second screw 27, and the second spring washer 28 is fixedly arranged on the left end face of the cover plate 1 through the second screw 27. Preferably, the length of the first screw 13 is greater than the extent of the second screw 27. It should be noted that a plurality of plugs are disposed on the second valve body 16 for plugging the redundant pipe openings in the second valve body 16, specifically, the bottom of the second valve body 16 is disposed with the first plug 12, and the right end surface thereof is disposed with the second plug 15.
Simultaneously, in order to improve the leakproofness of two relay valves, as shown in fig. 1, the utility model relates to a two relay valves of full hydraulic braking system still includes first O type sealing washer 17, rectangular seal ring 26, second O type sealing washer 18 and first retaining ring 19, and rectangular seal ring 26 sets up on the annular contact surface of clamp plate 2 and first valve body 3, and first O type sealing washer 17 sets up on the annular contact surface of second valve body 16 and first valve body 3, and second O type sealing washer 18 and first retaining ring 19 are installed in the first ring seal groove that sets up on the contact surface that sleeve 11 and first valve body 3 link to each other.
As the utility model discloses preferred embodiment, radially be provided with two circular beads of excircle variation in size at least on the valve barrel 24, all be provided with second annular seal groove on every circular bead, be provided with third retaining ring 23 and fourth O type sealing washer 22 on every second annular seal groove for prevent that pressure oil from permeating away through the contact surface of valve barrel 24 between valve body 3.
In addition, as shown in fig. 1, the pressure plate 2 is provided with an annular groove a for communicating the left cavity d of the valve sleeves 24 installed in the two main cavity holes, and communicating with an oil drain hole L provided on the first valve body 3, the oil drain hole L communicating with the T port; meanwhile, as shown in fig. 1, the first valve core 5 disposed in one of the main cavity holes is provided with an oil hole c and an inner cavity B1, the first valve core 5 disposed in the two main cavity holes is provided with an oil hole c and an inner cavity B2, and the pressure oil of the B1 and B2 respectively enters the inner cavities B1 and B2 of the first valve core 5 through the oil hole c.
The working principle of the relay valve of the full hydraulic braking system is briefly described as follows: : when pressure oil enters the port P1, all the components are kept at the middle position, the pressure oil P1 is stopped at the outer side of the large valve core 5, the ports B1 and B2 of the working ports are communicated with the port T, the brake actuating mechanism is in a pressure relief state, and the brake mechanism does not work; when pressure oil enters a PX control port, the push rod plunger 10 starts to move under the action of the pressure oil and transmits the force to the first valve core 5 through the first spring 8, the first valve core 5 moves leftwards, when the first valve core 5 moves to a P1 port pressure connection position (namely when a throttling port on the first valve core 5 is connected with a P1 port), ports B1 and B2 and a T port are cut off in advance, the pressure oil of the P1 port cut off at the outer side of the first valve core 5 enters ports B1 and B2, the pressure oil of the ports B1 and B2 enters inner cavities B1 and B2 of the first valve core 5 through an oil hole c on the first valve core 5, so that the rightward force generated by the first valve core 5 is balanced with the PX force transmitted on the second valve body 16, and the pressure oil starts to be output by B1 and B2; meanwhile, the annular groove a is formed in the pressure plate 2, the cavity d on the left side of the valve sleeve 24 is communicated with an oil drainage hole L formed in the first valve body 3, leakage oil generated by matching the first valve core 5, the second valve core 4 and the valve sleeve 24 can be communicated with an L port through the groove a, the leakage oil is discharged into the T port, the pressure of the cavity on the left sides of the second valve core 4 and the first valve core 5 is kept to be zero, and accurate control of pressure and flow is guaranteed.
In addition, need to mention, the utility model discloses well B1, B2 mouth output pressure can be with PX input pressure proportional amplification or reduce, and be relevant with PX mouth input pressure signal linear scale, simultaneously, can set up first case 5 cross section diameter size, through the difference of the braking flow of P1 hydraulic oil input B1, B2 mouth, realize the quick response of braking and do not have the delay, satisfy the front and back wheel because the different demands that need of pressure of braking moment difference.
To sum up, the utility model discloses a relay valve fast reaction, in the brake around the quick conveying of the large-traffic braking hydraulic oil of high pressure of proportional to can be according to front and back wheel brake pressure's difference, adopt different relay valves, in the arrestment mechanism of passing into again after improving brake pressure proportion, make the stopper obtain corresponding brake pressure and flow as requested, avoided among the braking system pipeline overlength and produce the pressure drop and lead to the brake force not enough, influence driving safety, and can make brake pressure change as required, satisfy preceding, the rear wheel uses the demand of different pressures because brake moment is different, have factor of safety height, low cost, quick response's advantage.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The double relay valve of the full hydraulic brake system is characterized by comprising a cover plate (1), a pressure plate (2), a first valve body (3) and a second valve body (16) which are sequentially arranged from left to right, wherein the cover plate (1), the pressure plate (2) and the first valve body (3) are fixedly connected, and the first valve body (3) and the second valve body (16) are fixedly connected;
the valve is characterized in that two main cavity holes are formed in the first valve body (3), a valve sleeve (24), a spring seat (7), a first spring (8), a second spring (9) and a sleeve (11) are installed in one main cavity hole, one end of the valve sleeve (24) is connected with the pressing plate (2), the other end of the valve sleeve is connected with one end of the spring seat (7) through a first valve core (5), the other end of the spring seat (7) is connected with the sleeve (11) through a push rod plunger (10), the push rod plunger (10) is arranged in an inner hole of the sleeve (11), the first spring (8) and the second spring (9) are coaxially sleeved on the spring seat (7), the radial diameter of the second spring (9) is larger than that of the first spring (8), the first valve core (5) is installed in the valve sleeve (24), a second valve core (4) and a third spring (6) are arranged in an inner cavity of the first valve core (5), one end of the second valve core (4) is abutted against the pressure plate (2), and the other end of the second valve core is contacted with the third spring (6); the two main cavities are arranged in the same way as the one main cavity;
the second valve body (16) is provided with a control oil channel PX, the push rod plunger (10) is communicated with the control oil channel PX, a valve sleeve (24) arranged in one main cavity hole is provided with a port B1 and a port P1, valve sleeves (24) arranged in two main cavity holes are provided with a port B2 and a port P1, and the first valve body (3) is internally provided with a port T.
2. The double relay valve of full hydraulic brake system according to claim 1, further comprising a first O-ring (17) and a rectangular seal (26), wherein the rectangular seal (26) is disposed on the annular contact surface of the pressure plate (2) and the first valve body (3), and the first O-ring (17) is disposed on the annular contact surface of the second valve body (16) and the first valve body (3).
3. The double relay valve of full hydraulic brake system according to claim 2, wherein the contact surface of the sleeve (11) with the first valve body (3) is provided with a first annular sealing groove, and the second O-ring (18) and the first retainer ring (19) are arranged in the first annular sealing groove.
4. The dual relay valve of full hydraulic brake system as recited in claim 3, wherein said valve housing (24) is provided with at least two shoulders having different outer circumferences along a radial direction, each of said shoulders is provided with a second annular sealing groove, and each of said second annular sealing grooves is provided with a third retainer ring (23) and a fourth O-ring (22).
5. The double relay valve of full hydraulic brake system according to any one of claims 1 to 4, wherein the internal arrangement of two of the main bores and the internal arrangement of one of the main bores are arranged symmetrically with respect to an axis of the first valve body (3) extending in the left-right direction.
6. The double relay valve of a full hydraulic brake system as recited in claim 5, characterized in that the pressure plate (2) is provided with an annular groove a for communicating the left cavity d of the valve sleeve (24) installed in the two main cavity holes and communicating with an oil drainage hole L provided on the first valve body (3), the oil drainage hole L communicating with the T-port.
7. The double relay valve of the full hydraulic brake system according to claim 6, wherein the first valve core (5) disposed in one of the main cavity holes is provided with an oil hole c and an inner cavity B1, the first valve core (5) disposed in the two main cavity holes is provided with an oil hole c and an inner cavity B2, and pressure oil of the ports B1 and B2 respectively enters the inner cavities B1 and B2 of the first valve core (5) through the oil hole c.
8. The double relay valve of full hydraulic brake system according to claim 1, further comprising a first screw (13) and a second screw (27), wherein the second valve body (16) is connected to the first valve body (3) by the first screw (13), and the second screw (27) connects the cover plate (1) and the pressure plate (2) to the first valve body (3).
9. The dual relay valve of full hydraulic brake system as claimed in claim 8, further comprising a first spring washer (14) and a second spring washer (28): the first spring washer (14) is fixedly arranged on the right end face of the second valve body (16) through a first screw (13); and the second spring washer (28) is fixedly arranged on the left end surface of the cover plate (1) through a second screw (27).
10. The double relay valve of full hydraulic brake system according to claim 1, wherein the second valve body (16) is provided with a first plug (12) and a second plug (15), the first plug (12) is installed at the bottom of the second valve body (16), and the second plug (15) is installed at the right end face of the second valve body (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921994670.4U CN210852418U (en) | 2019-11-19 | 2019-11-19 | Double-relay valve of full hydraulic braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921994670.4U CN210852418U (en) | 2019-11-19 | 2019-11-19 | Double-relay valve of full hydraulic braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210852418U true CN210852418U (en) | 2020-06-26 |
Family
ID=71303560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921994670.4U Active CN210852418U (en) | 2019-11-19 | 2019-11-19 | Double-relay valve of full hydraulic braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210852418U (en) |
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2019
- 2019-11-19 CN CN201921994670.4U patent/CN210852418U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A double relay valve for full hydraulic braking system Effective date of registration: 20220530 Granted publication date: 20200626 Pledgee: Bank of Communications Co.,Ltd. Hunan Branch Pledgor: HUNAN HONGHUI TECHNOLOGY Co.,Ltd. Registration number: Y2022430000036 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230621 Granted publication date: 20200626 Pledgee: Bank of Communications Co.,Ltd. Hunan Branch Pledgor: HUNAN HONGHUI TECHNOLOGY Co.,Ltd. Registration number: Y2022430000036 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A dual relay valve for a fully hydraulic braking system Effective date of registration: 20230725 Granted publication date: 20200626 Pledgee: Bank of Communications Co.,Ltd. Hunan Branch Pledgor: HUNAN HONGHUI TECHNOLOGY Co.,Ltd. Registration number: Y2023980049707 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |