CN210478668U - Pure electric off-highway rigid dump truck braking system double-path protection valve - Google Patents
Pure electric off-highway rigid dump truck braking system double-path protection valve Download PDFInfo
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- CN210478668U CN210478668U CN201921219457.6U CN201921219457U CN210478668U CN 210478668 U CN210478668 U CN 210478668U CN 201921219457 U CN201921219457 U CN 201921219457U CN 210478668 U CN210478668 U CN 210478668U
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Abstract
The utility model discloses a electricelectric moves non-highway rigidity tipper braking system double-circuit protection valve, including the valve body: a valve core is arranged in the middle of the valve body, and a gasket, a valve core tappet and a spring are symmetrically arranged on two sides of the valve core; the two-way protection valve is of a symmetrical structure and comprises two working loops; a cross through hole oil duct is arranged between the valve cores; a steel ball is respectively arranged between the tappet rods at the two sides and the valve core, and two screw plug sealing covers are respectively arranged at the two ends of the outer side of the valve body; the valve body is provided with an oil inlet which is connected to the two working loops; the valve body is provided with two spare oil ducts for emergency working conditions. The utility model discloses the valve is when single work return circuit or two work return circuits break down, but the emergency work return circuit of self-closing starts emergency work condition, and inner structure is simple, and the security is high, moves reliable and stable, and it is very convenient to maintain.
Description
Technical Field
The utility model belongs to the technical field of pure electric non-highway rigid dumper braking system, concretely relates to pure electric non-highway rigid dumper braking system double-circuit protection valve.
Background
The braking system plays a vital role in the safe operation of the mining truck, and the existing braking system has the problems of complex components, multiple pipelines, disordered layout and the like.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model relates to a electricelectric moves non-highway rigidity tipper braking system double-circuit protection valve simple structure, dependable performance, the maintenance of being convenient for can protect and the normal operating mode of management system, cuts off one or two work circuits that break down immediately, and the emergency braking operating mode of automatic start is changed for reserve work circuit to reach the purpose of mine car safe operation.
The utility model adopts the technical proposal that: a pure electric non-highway rigid dumper two-way protection valve comprises a valve body;
the valve body comprises a valve core, a valve sleeve, a tappet, a spring, a steel ball and a gasket; the valve body is divided into a left cavity and a right cavity, and a steel ball, a gasket, a valve sleeve, a tappet and a spring are arranged in the two cavities respectively to form a loop; the center of the valve core is provided with a longitudinal oil duct and a transverse oil duct, and the longitudinal oil duct is an oil inlet duct and is connected with an oil supply pipeline of an oil pump; two ends of the transverse oil duct of the valve core are conical surfaces and tightly abut against the steel ball; the conical surface and the steel ball are sealed through a contact surface; the hollow position of the valve sleeve is a spring and tappet mounting area; the hollow part of the screw plug is a guide hole of the valve sleeve and the tappet; the screw plug is sealed by a sealing ring; the spring tightly abuts against the steel ball to close the transverse oil duct; the spring forces of the two sides are equal to maintain the state of the middle position of the valve core; the valve core and the valve body are provided with two sealing ring mounting grooves; a cross channel is arranged in the middle of the valve core; the valve core is positioned by compressing the valve sleeve and the gasket through the screw plugs at two ends; the steel ball, the tappet and the spring are loop control components; one end of the tappet flange is provided with a conical surface, and the other end of the tappet flange is inserted into an inner hole of the plug screw; the valve sleeve is provided with two round holes which are oil passages of the loop; the outer diameter of the valve sleeve is smaller than the space of the oil outlet cavity of the valve body; the valve sleeves are symmetrical parts, so that the valve sleeves can be arranged at any position; the two oil passages with the lower plugging part have the same function, can be opened for use according to the arrangement condition of an equipment system, and can also be provided with a pressure sensor or a pressure monitoring system; the valve body is provided with an oil inlet and four oil outlets.
Preferably, a group of sealing rings are respectively arranged between the two ends of the valve core of the double-protection valve and the valve body.
Preferably, one oil supply port and the oil outlet closed by the screw plug are spare oil ports, so that four-loop control can be realized.
Preferably, the oil outlet may be connected to a parking brake, also protected by a circuit relief valve.
Preferably, two spare pressure source ports are reserved for other auxiliary equipment pressure operations.
Preferably, the spring force is adjustable, whereby the system pressure can be adjusted.
Preferably, the valve body is provided with 2 bolt fixing holes, and the installation angle and the pipeline trend can be determined according to the installation position.
Preferably, the joint surface of the valve core and the steel ball is a sealing surface.
Preferably, the valve sleeve bore is also a guide bore for the tappet.
Since the technical scheme is used, the beneficial effects of the utility model are that:
1. the internal structure and parts of the valve body are designed symmetrically, so that the valve is simple to install and strong in repairability;
2. when the emergency state or the system is detected, the emergency working condition loop is always in a closed state, so that the abrasion of parts is reduced, the service life of the parts is greatly prolonged, and the safety performance of the system is greatly improved;
3. the coefficient of stiffness of the spring can be selected according to the system requirements to adapt to and improve the action time and the sealing effect of the system;
generally, the utility model discloses simple structure, be convenient for make installation, easy maintenance, low in manufacturing cost expense, the operation is stable and long service life.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1-a first plug screw; 2-a first sealing ring; 3-a valve body; 4-a first oil outlet; 5-a first valve housing; 6-a first gasket; 7-a first fixing bolt; 8-a second sealing ring; 9-a second oil outlet; 10-a second fixing bolt; 11-a second gasket; 12-a third oil outlet; 13-a third seal ring; 14-a second plug screw; 15-a third plug screw; 16-a second valve housing; 17-a first spring; 18-a first tappet; 19-a first steel ball; 20-a fourth seal ring; 21-an oil inlet; 22-a valve core; 23-a second steel ball; 24-a second tappet; 25-a second spring; 26-a fourth plug screw; 27-a first gasket; 28-second gasket.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
The utility model provides a pure electric non-highway rigid dumper two-way protection valve, which comprises a valve body; the valve body comprises a valve core, a valve sleeve, a tappet, a spring, a steel ball and a gasket; the valve body is divided into a left cavity and a right cavity, and a steel ball, a gasket, a valve sleeve, a tappet and a spring are arranged in the two cavities respectively to form a loop; the center of the valve core is provided with a longitudinal oil duct and a transverse oil duct, and the longitudinal oil duct is an oil inlet duct and is connected with an oil supply pipeline of an oil pump; two ends of the transverse oil duct of the valve core are conical surfaces and tightly abut against the steel ball; the conical surface and the steel ball are sealed through a contact surface; the hollow position of the valve sleeve is a spring and tappet mounting area; the hollow part of the screw plug is a guide hole of the valve sleeve and the tappet; the screw plug is sealed by a sealing ring; the spring tightly abuts against the steel ball to close the transverse oil duct; the spring forces of the two sides are equal to maintain the state of the middle position of the valve core; the valve core and the valve body are provided with two sealing ring mounting grooves; a cross channel is arranged in the middle of the valve core; the valve core is positioned by compressing the valve sleeve and the gasket through the screw plugs at two ends; the steel ball, the tappet and the spring are loop control components; one end of the tappet flange is provided with a conical surface, and the other end of the tappet flange is inserted into an inner hole of the plug screw; the valve sleeve is provided with two round holes which are oil passages of the loop; the outer diameter of the valve sleeve is smaller than the space of the oil outlet cavity of the valve body; the valve sleeves are symmetrical parts, so that the valve sleeves can be arranged at any position; the two oil passages with the lower plugging part have the same function, can be opened for use according to the arrangement condition of an equipment system, and can also be provided with a pressure sensor or a pressure monitoring system; the valve body is provided with an oil inlet and four oil outlets.
Specifically, a group of sealing rings are respectively arranged between the two ends of the valve core of the double-protection valve and the valve body.
Specifically, an oil outlet closed by the screw plug is a spare oil port, and four loop controls can be realized.
In particular, the oil outlet may be connected to the parking brake, also protected by a circuit safety valve.
Specifically, two spare pressure source ports are reserved for other auxiliary equipment pressure operations.
In particular, the spring force may be adjustable, thereby adjusting the system pressure.
Specifically, the valve body has 2 bolt fixing holes, can confirm installation angle and pipeline trend according to the mounted position.
Specifically, the joint surface of the valve core and the steel ball is a sealing surface.
Specifically, the valve housing bore is the guide bore of the tappet.
As shown in fig. 1, in specific implementation, the valve body 7 is provided with an oil inlet 21 and three oil outlets, the three oil outlets are respectively a first oil outlet 4, a second oil outlet 9 and a third oil outlet 12, and the spare oil ports are sealed by a third plug screw 15 and a fourth plug screw 26; the interfaces are all connected by screw threads.
Reasonably arranging the installation position and the pipeline direction of the valve body 3 according to the system layout and the installation mode; the first oil outlet 4 and the third oil outlet 12 are emergency working condition interfaces; the oil inlet 21 is connected with an oil outlet of the hydraulic oil pump, the emergency working condition interface is connected with the emergency braking energy accumulator, and emergency braking is automatically started when one working circuit or two working circuits break down so as to ensure the personal safety of vehicles and drivers.
The working brake is in a double-loop control mode, when one loop fails, the other loop can work normally, and a driver can drive the vehicle into a safe place for maintenance; the first oil outlet 4 and the third oil outlet 12 are connected with a brake valve working circuit interface; the first steel ball 19 and the second steel ball 23 in the valve body 3 are arranged between an oil outlet of the hydraulic oil pump and an oil inlet of the working brake valve, and a pressure oil source can be taken from the first steel ball and the second steel ball to be led into a wheel brake lock loop.
The valve core 22 is arranged in the middle of the valve body; the first screw plug 1 and the second screw plug 14 respectively press the first valve sleeve 5, the second valve sleeve 16, the first gasket 6 and the second gasket 11 from two ends in sequence, so that the valve core 22 is fixed at the middle position of the valve body 3; a cross-shaped through hole oil duct is arranged in the middle of the valve core 22, and the purpose of the cross-shaped through hole oil duct is to increase the oil passing amount so as to meet the requirement of a pressure oil source of a brake system; a first steel ball 19, a second steel ball 23, a first gasket 6, a second gasket 11, a first valve sleeve 5, a second valve sleeve 16, a first tappet 18, a second tappet 24, a first spring 17 and a second spring 25 which are arranged on the first tappet 18 and the second tappet 24 are respectively and sequentially arranged on two sides of the valve core 22, and then the components are positioned and blocked by a first plug screw 1 and a second plug screw 14; the sealing element inside is always in a static state, dynamic abrasion of the sealing element is avoided, and the service life of the sealing ring is prolonged.
Oil outlets closed by the first screw plug 1 and the second screw plug 14 are spare oil ports, so that four loops of control can be realized; the utility model discloses an oil-out all the way of double-circuit protection valve can connect the parking braking return circuit, and it receives the protection of double-protection relief valve equally.
The spring force of the first spring 17 and the second spring 25 can be adjusted, and the spring force is adjusted by changing the thickness of the first gasket 6 and the second gasket 11, so that the system pressure is adjusted.
The valve body 3 is provided with two fixing bolt holes, and the installation angle and the pipeline direction can be determined according to the installation position; the sealing surfaces of the valve core 22, the first steel ball 19 and the second steel ball 23 are valve core conical surfaces, so that the sealing effect is better, and the service life is longer.
The inner holes of the first screw plug 1 and the second screw plug 14 are guide holes of the first valve sleeve 5, the second valve sleeve 16 and the first tappet 18 and the second tappet 24, so that the straightness of the movement of the first spring 17, the second spring 25, the first tappet 18 and the second tappet 24 is ensured, the offset movement of the first spring 17, the second spring 25, the first tappet 18 and the second tappet 24 is eliminated, and the influence on the sealing surface of the first steel ball 19 and the second steel ball 23 and the system pressure is reduced.
The double-protection safety valve of the brake system of the pure electric off-highway rigid dump truck has the advantages of simple structure, easiness in processing, manufacturing and maintenance, stable performance and low cost, and plays an important role in improving the safety performance of the system, ensuring the safe operation of vehicles and the like.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. A pure electric off-highway rigid dump truck brake system double-path protection valve comprises a valve body and a valve core, and is characterized in that the valve body is provided with an oil inlet and five oil outlets, the oil inlet and the oil outlets are all in threaded connection, and two of the five oil outlets are emergency working condition interfaces; the oil inlet is connected with an oil outlet of the hydraulic oil pump; the working brake is in a double-loop control mode, and the two oil outlets are connected with a working loop interface of a working brake valve; the steel ball in the valve body is arranged between an oil outlet of the hydraulic oil pump and an oil inlet of the working brake valve; the valve core is arranged in the middle of the valve body; a cross-shaped through hole oil duct is arranged between the valve cores; and the two sides of the valve core are respectively and sequentially provided with a steel ball, a gasket, a valve sleeve, a tappet and a spring arranged on the tappet, and the valve core is positioned and blocked by a screw plug.
2. The pure electric off-highway rigid dump truck brake system two-way protection valve according to claim 1, characterized in that: a group of sealing rings are respectively arranged between the two ends of the valve core of the double-protection valve and the valve body.
3. The pure electric off-highway rigid dump truck brake system two-way protection valve according to claim 1, characterized in that: the oil outlet closed by the screw plug is a spare oil port, and four loops of control can be realized.
4. The pure electric off-highway rigid dump truck brake system two-way protection valve according to claim 1, characterized in that: the oil outlet can be connected with a parking brake.
5. The pure electric off-highway rigid dump truck brake system two-way protection valve according to claim 1, characterized in that: two spare pressure source ports are reserved.
6. The pure electric off-highway rigid dump truck brake system two-way protection valve according to claim 1, characterized in that: the spring force, and thus the system pressure, may be adjusted.
7. The pure electric off-highway rigid dump truck brake system two-way protection valve according to claim 1, characterized in that: the valve body is provided with 2 bolt fixing holes, and the installation angle and the pipeline direction can be determined according to the installation position.
8. The pure electric off-highway rigid dump truck brake system two-way protection valve according to claim 1, characterized in that: the joint surface of the valve core and the steel ball is a sealing surface.
9. The pure electric off-highway rigid dump truck brake system two-way protection valve according to claim 1, characterized in that: the valve housing bore is the guide bore for the tappet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921219457.6U CN210478668U (en) | 2019-07-31 | 2019-07-31 | Pure electric off-highway rigid dump truck braking system double-path protection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921219457.6U CN210478668U (en) | 2019-07-31 | 2019-07-31 | Pure electric off-highway rigid dump truck braking system double-path protection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210478668U true CN210478668U (en) | 2020-05-08 |
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ID=70535421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921219457.6U Active CN210478668U (en) | 2019-07-31 | 2019-07-31 | Pure electric off-highway rigid dump truck braking system double-path protection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210478668U (en) |
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2019
- 2019-07-31 CN CN201921219457.6U patent/CN210478668U/en active Active
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