CN115182994A - Interlocking integrated valve, gas circuit protection system and control method thereof - Google Patents
Interlocking integrated valve, gas circuit protection system and control method thereof Download PDFInfo
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- CN115182994A CN115182994A CN202210737697.5A CN202210737697A CN115182994A CN 115182994 A CN115182994 A CN 115182994A CN 202210737697 A CN202210737697 A CN 202210737697A CN 115182994 A CN115182994 A CN 115182994A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 230000010354 integration Effects 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 17
- 230000007935 neutral effect Effects 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000004044 response Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 241000282414 Homo sapiens Species 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
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- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/36—Interlocking devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
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Abstract
The invention discloses an interlocking integrated valve, a gas circuit protection system and a control method thereof, wherein the interlocking integrated valve comprises an interlocking valve and a power takeoff conversion valve; the valve bodies of the interlocking valve and the power takeoff conversion valve are integrated valve bodies; the interlocking valve capable of adapting to various transmissions is integrated, meanwhile, a power takeoff conversion valve is also integrated, when the product integration degree is greatly increased, various valves are integrated into one valve, the cost and the failure rate are greatly reduced, meanwhile, the gas circuit is simplified, the gas circuit is more convenient to assemble and maintain, the valves are integrated, process holes are machined in the valve body, internal gas passages are connected, connectors and gas pipes in the original gas circuit are replaced, corresponding required paths are reduced, the response speed of an interlocking system is higher, the problems of clamping stagnation of the gas circuit of a traditional rubber pipe and gas leakage are solved, a push rod part is further formed, a friction-resistant self-lubricating bushing is used, and the service life of the product is prolonged by 20%; the valve core returns to a free state from a compressed state, and the valve core returns with air assistance except for the force of the return spring, so that the response speed of the air valve is improved.
Description
Technical Field
The invention belongs to the technical field of transmissions and relates to an interlocking integrated valve, a gas circuit protection system and a control method thereof.
Background
At present, heavy-duty trucks all adopt a double-intermediate-shaft speed changer with a main box structure and an auxiliary box structure, and the auxiliary speed changer realizes air passage on-off control, high/low gear switching and auxiliary box synchronizer protection by an air valve. An interlocking protection gas circuit is separately arranged on the speed changer with the power takeoff, and two gas valves, namely an interlocking valve and a power takeoff conversion valve, need to be connected respectively. In the existing gas circuit, the gas valve is simple in structure, single in function, low in cost, low in product life and capable of bringing great inconvenience to drivers due to the fact that the gas valve is stuck and leaks frequently in the use process, and design risks exist.
Disclosure of Invention
The invention aims to solve the problems of clamping stagnation and air leakage in the using process of a product and provides an interlocking integrated valve, a gas circuit protection system and a control method thereof. Meanwhile, the interlocking integrated valve can completely replace the existing upper air valve of the transmission, and realize seamless butt joint of new and old products.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
in a first aspect, the present invention provides an interlocking integrated valve comprising:
the valve body is provided with an interlocking valve mounting hole and a power takeoff conversion valve stabilizing hole; the interlocking valve mounting hole and the power takeoff switching valve mounting hole are blind holes, and openings are formed in two side faces opposite to the valve body; the interlocking valve mounting hole is communicated with the power takeoff switching valve security hole through a plurality of process holes formed in the valve body; the valve body is also provided with a steam inlet, a gas outlet and a parking power take-off control port, the steam inlet, the gas outlet and the parking power take-off control port are communicated with a changeover valve installing hole of the power take-off, and the gas outlet is communicated with an interlocking valve installing hole;
a first valve core of the power take-off conversion valve is arranged in a power take-off conversion valve dead man hole, and the end part of the first valve core is sealed by a sealing cover;
and the second valve core of the interlocking valve is arranged in the interlocking valve mounting hole, and the end part of the interlocking valve is provided with the lower cover.
The power takeoff conversion valve installing and rotating hole comprises a piston installing section and a first valve core installing section, and the inner diameter of the piston installing section is larger than that of the first valve core installing section; the power takeoff switching valve comprises a piston, the piston is arranged in the piston mounting section, a sealing cover is arranged on one side close to an opening of a power takeoff switching valve mounting hole, and a check ring is arranged at the end part of the sealing cover; one side of the piston, which is far away from the opening of the power takeoff changeover valve mounting hole, is connected with a first valve core, and the first valve core is arranged in the first valve core mounting section.
And the piston mounting section of the power takeoff conversion valve dead man hole are sealed by a lip-shaped sealing ring.
And a blind hole is formed in one end, away from the piston, of the first valve core, a first spring is arranged in the blind hole, one end of the first spring is connected with the first valve core, and the other end of the first spring is abutted against the end part of the power takeoff conversion valve mounting hole.
The interlocking valve comprises a lower cover, an ejector rod and a second valve core, and the second valve core is arranged in the interlocking valve mounting hole; the lower cover is arranged on the outer side of the interlocking valve mounting hole, and a through hole penetrating through the lower cover is formed in the lower cover and is opposite to the interlocking valve mounting hole; the ejector rod is arranged in the through hole of the lower cover, and one end of the ejector rod is in contact with the second valve core.
And a blind hole is formed in one end, far away from the ejector rod, of the second valve core, a second spring is arranged in the blind hole, one end of the second spring is connected with the second valve core, and the other end of the second spring is abutted to the end part of the interlocking valve mounting hole.
A guide sleeve is arranged between the second valve core and the interlocking valve mounting hole; a self-lubricating bushing is arranged between the ejector rod and the through hole of the lower cover.
The exhaust port is provided with a plurality of sealing gaskets, and the exhaust port is provided with a dust cover.
In a second aspect, the invention provides a gas path protection system adopting an interlocking integrated valve, which comprises a gas storage tank, a double pneumatic control integrated valve and an interlocking integrated valve; the air outlet end of the air storage tank is connected with an air filter, and the outlet of the air filter is respectively connected with the air source input port of the double pneumatic control integrated valve and the air inlet of the interlocking integrated valve; the air inlet end of the air storage tank is respectively connected with a first electromagnetic valve and a second electromagnetic valve; the control end of the first electromagnetic valve is connected with the parking power take-off switch, and the air inlet side of the first electromagnetic valve is connected with the air outlet end of the auxiliary box air cylinder; the control end of the second electromagnetic valve is connected with the traveling crane power take-off switch, and the air inlet side of the second electromagnetic valve is connected with the air outlet end of the power take-off cylinder;
a pre-selection valve air inlet and a pre-selection valve air outlet of the double pneumatic control integrated valve are respectively connected with an air inlet and an air outlet corresponding to the pre-selection valve; the first secondary cylinder exhaust port and the second secondary cylinder exhaust port of the double pneumatic control integrated valve are communicated with the secondary box cylinder; and a first air outlet of the interlocking integrated valve is connected with a parking power take-off protection air inlet of the double pneumatic control integrated valve, and a second air outlet is connected to an air inlet side of the first electromagnetic valve.
In a third aspect, the present invention provides a method for controlling a gas path protection system, including the following steps:
(1) When the high-low gear of the auxiliary box is switched:
firstly, a pre-selection valve high-low gear shifting block is shifted to perform gear pre-selection operation, at the moment, the pre-selection valve controls the action of a valve core inside the double pneumatic control integrated valve to complete the position switching of the valve core, and at the moment, an auxiliary box cylinder does not act; then the gear lever is switched to a neutral gear, the ejector rod of the double pneumatic control integrated valve returns to a free state, the air inlet is communicated with the air outlet, and the auxiliary box air cylinder completes switching under the action of compressed air;
(2) When the main box and the auxiliary box are protected:
in the switching process of the auxiliary box cylinder, an ejector rod of the interlocking integrated valve is in a free state, compressed air which is subjected to pressure reduction through the air filter enters the operating interlocking cylinder through the interlocking integrated valve, the gear shifting shaft is locked, and the gear can not be engaged; when the auxiliary box cylinder is switched in place, the ejector rod of the interlocking integrated valve is in a compressed state, compressed air of the interlocking cylinder is exhausted to the atmosphere through the interlocking integrated valve, the interlocking shaft is unlocked, and a gear can be engaged;
(3) When parking power take-off is carried out:
the main box is in neutral gear, a parking power take-off switch is turned on, and the auxiliary box cylinder is switched to the neutral gear under the action of high-pressure air of the whole vehicle; the control end of the double pneumatic control integrated valve is ventilated, so that the air valve keeps a low gear, and the power take-off protection function is realized; when the pre-selection valve shifting head is switched, the auxiliary box does not act to protect the synchronizer; the control end of the interlocking integrated valve is ventilated, compressed air is discharged through the interlocking integrated valve, the main box is unlocked, and at the moment, the gear can be engaged, so that the power take-off during parking is realized.
Compared with the prior art, the invention has the following beneficial effects:
the interlocking valve capable of being adapted to various transmissions is integrated, interchangeability is good, a power takeoff conversion valve is also integrated, various valves are integrated into one valve while the integration degree of a product is greatly improved, the cost and the failure rate are greatly reduced, meanwhile, the gas circuit is simplified, the gas circuit is more convenient to assemble and maintain, the valves are integrated, process holes are machined in the valve body and connected with the internal gas channel, the original connector and the gas pipe in the gas circuit are replaced, corresponding required paths are reduced, the response speed of an interlocking system is higher, and the problems of clamping stagnation and gas leakage of the gas circuit of the traditional rubber pipe are solved.
Furthermore, the ejector rod part of the invention uses a friction-resistant self-lubricating bushing to prolong the service life of the product by 20 percent.
Furthermore, the valve core of the invention is designed by adopting a polished rod concave-convex shaft, so that the friction is reduced, the air inlet efficiency of a power takeoff conversion valve and the exhaust efficiency of an interlocking valve are improved, and meanwhile, the impact of O-shaped rings at two ends is reduced, and the abrasion is reduced; the valve core returns to a free state from a compressed state, and air-assisted return is carried out except for the return spring force, so that the response speed of the air valve is improved.
Furthermore, support rings are added at two ends of the valve core, so that the valve core is ensured to move stably, and eccentric wear is prevented.
Furthermore, the ejector rod and the valve core of the gas circuit control valve are designed in a split mode, so that the lateral force borne by the ejector rod is prevented from being transmitted to the valve core, the axial movement of the valve core is prevented from eccentric wear, and the service life is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a schematic diagram of the mechanism of the interlocking integrated valve of the present invention.
FIG. 2 is a schematic structural diagram of the ejector rod in a compressed state and the control port in an airless state.
FIG. 3 is a schematic structural diagram of the ejector rod in a free state and the control port in an airless state.
FIG. 4 is a schematic structural view of the ejector rod in a free state and in a ventilation state of the control port.
Fig. 5 is a schematic structural diagram of the protection gas circuit system of the present invention.
Wherein: 1-check ring, 2-sealing cover, 3-piston, 4-lip sealing ring, 5-valve body, 6-valve core 17-sealing gasket, 8-dust cover, 9-lower cover, 10-self-lubricating bushing, 11-ejector rod, 12-valve core 2, 13-guide sleeve, 14-second spring, 15-first spring, 21-air inlet, 22-air outlet, 23-air outlet, 24-parking power take-off control port, 50-air storage tank, 51-pre-selection valve, 52-air filter, 53-interlocking integrated valve, 54-auxiliary box air cylinder, 55-power take-off air cylinder, S1-first electromagnetic valve, S2-second electromagnetic valve, K1-parking power take-off switch and K2-driving power take-off switch.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually arranged when the product of the present invention is used, the description is merely for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, cannot be understood as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the term "horizontal", if present, does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be broadly construed and interpreted as including, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, an embodiment of the present invention discloses an interlock integration valve including a valve body 5, a power take-off switch valve, and an interlock valve.
The valve body 5 is provided with an interlocking valve mounting hole and a power takeoff conversion valve security rotation hole; the interlocking valve mounting hole and the power takeoff switching valve security rotating hole are blind holes, and openings are formed in two side faces opposite to the valve body 5; the interlocking valve mounting hole is communicated with the power takeoff changeover valve ampere-rotation hole through a plurality of process holes formed in the valve body 5; the valve body 5 is also provided with a steam inlet 21, a gas outlet 22, a gas outlet 23 and a parking power take-off control port 24, the steam inlet 21, the gas outlet 23 and the parking power take-off control port 24 are communicated with a power take-off conversion valve installation hole, and the gas outlet 22 is communicated with an interlocking valve installation hole. The exhaust port 23 is provided with a plurality of sealing gaskets 7, and the exhaust port 23 is provided with a dust cover 8.
A first valve core 6 of the power take-off conversion valve is arranged in a power take-off conversion valve rotation mounting hole, and the end part of the first valve core is sealed by a sealing cover 2; the power takeoff changeover valve installing hole comprises a piston installing section and a first valve core installing section, and the inner diameter of the piston installing section is larger than that of the first valve core installing section. The power takeoff conversion valve comprises a piston 3, the piston 3 is arranged in a piston mounting section, a sealing cover 2 is arranged on one side close to an opening of a power takeoff conversion valve mounting hole, and a retainer ring 1 is arranged at the end part of the sealing cover 2; the side of the piston 3 far away from the opening of the power take-off changeover valve mounting hole is connected with a first valve core 6, and the first valve core 6 is arranged in the first valve core mounting section. And the piston 3 and the piston mounting section of the power takeoff conversion valve dead man hole are sealed by a lip-shaped sealing ring 4. The blind hole is opened to the one end that the piston 3 was kept away from to first case 6, is provided with first spring 15 in this blind hole, and the one end of first spring 15 links to each other with first case 6, and the other end offsets with the tip of power takeoff change-over valve mounting hole.
And the second valve core 12 of the interlocking valve is arranged in the interlocking valve mounting hole, and the end part is provided with the lower cover 9. The interlocking valve comprises a lower cover 9, an ejector rod 11 and a second valve core 12, and the second valve core 12 is arranged in the interlocking valve mounting hole; the lower cover 9 is arranged on the outer side of the interlocking valve mounting hole, and a through hole penetrating through the lower cover 9 is formed in the lower cover 9 and is opposite to the interlocking valve mounting hole; the push rod 11 is arranged in the through hole of the lower cover 9, and one end of the push rod is contacted with the second valve core 12. One end of the second valve core 12, which is far away from the top rod 11, is provided with a blind hole, a second spring 14 is arranged in the blind hole, one end of the second spring 14 is connected with the second valve core 12, and the other end of the second spring is propped against the end part of the interlocking valve mounting hole. A guide sleeve 13 is arranged between the second valve core 12 and the interlocking valve mounting hole; a self-lubricating bush 10 is arranged between the mandril 11 and the through hole of the lower cover 9.
As shown in fig. 5, the embodiment of the present invention discloses a protection gas circuit system using an interlock integration valve, which includes a gas storage tank 50 and a dual gas control integration valve 56; the air outlet end of the air storage tank 50 is connected with an air filter 52, and the outlet of the air filter 52 is respectively connected with the air source input port 102 of the double pneumatic control integrated valve 56 and the air inlet of the interlocking integrated valve 53; the air inlet end of the air storage tank 50 is respectively connected with a first electromagnetic valve S1 and a second electromagnetic valve S2; the control end of the first electromagnetic valve S1 is connected with the parking power take-off switch K1, and the air inlet side of the first electromagnetic valve S1 is connected with the air outlet end of the auxiliary box air cylinder 54; the control end of the second electromagnetic valve S2 is connected with the traveling power take-off switch K2, and the air inlet side of the second electromagnetic valve S2 is connected with the air outlet end of the power take-off cylinder 55.
A pre-selection valve air inlet 101 and a pre-selection valve air outlet 41 of the double pneumatic control integrated valve 56 are respectively connected with an air inlet and an air outlet corresponding to the pre-selection valve 51; the first slave cylinder exhaust port 21 and the second slave cylinder exhaust port 22 of the dual pneumatic control integrated valve 56 are both communicated with the slave tank cylinder 54; the first air outlet of the interlocking integration valve 53 is connected with the parking power take-off protection air path air inlet 42 of the double pneumatic control integration valve 56, and the second air outlet is connected to the air inlet side of the first electromagnetic valve S1.
The embodiment of the invention also discloses a control method for protecting the gas circuit system, which comprises the following steps:
(1) When the high-low gear of the auxiliary box is switched:
firstly, a pre-selection valve high-low gear shifting block is shifted to perform gear pre-selection operation, at the moment, the pre-selection valve 51 controls the action of a valve core inside the double pneumatic control integrated valve 56 to complete the position switching of the valve core, and at the moment, the auxiliary box air cylinder 54 does not act (the reason is that in a gear state, the air inlet and the air outlet of the double pneumatic control integrated valve are cut off, and no compressed air is input); then the gear lever is switched to a neutral gear, the ejector rod 1 of the double pneumatic control integrated valve 56 returns to a free state, the air inlet is communicated with the air outlet, and the auxiliary box air cylinder 54 completes switching under the action of compressed air;
(2) When the main box and the auxiliary box are protected:
in the switching process of the auxiliary box air cylinder 54, the ejector rod of the interlocking integration valve 53 is in a free state, compressed air which is subjected to filtering and pressure reduction through the air filter 52 enters the operating interlocking air cylinder through the interlocking integration valve 53, the gear shifting shaft is locked (cannot rotate), and the gear cannot be engaged; when the auxiliary box cylinder is switched in place, the ejector rod of the interlocking integrated valve 53 is in a compressed state, compressed air of the interlocking cylinder is exhausted to the atmosphere through the interlocking integrated valve 53, and the interlocking shaft is unlocked (can rotate) and can be engaged into a gear;
(3) When parking power take-off is carried out:
the main box is in neutral gear, a parking power take-off switch (ventilation) is turned on, and the auxiliary box cylinder 54 is switched to the neutral gear under the action of the high-pressure air of the whole vehicle; the control end of the double pneumatic control integrated valve 56 is ventilated, so that the air valve keeps a low gear, and the parking power take-off protection function is realized; when the pre-selection valve shifting head is switched, the auxiliary box does not act to protect the synchronizer; the control end of the interlocking integrated valve 53 is ventilated, compressed air is discharged through the interlocking integrated valve 53, the main box is unlocked, and at the moment, gear can be engaged, so that power take-off during parking is realized.
The pneumatic protection device is characterized in that a double pneumatic control integrated valve and an interlocking integrated valve are additionally arranged at the same time to realize two kinds of pneumatic protection. The two air valves can be used separately, the working principle is not changed, and only the design of the air passage is slightly adjusted.
The working principle is as follows:
(1) The mandril is in a compressed state, and the control port has no air
The vehicle is in a driving state with the range section in the high/low position. As shown in fig. 2, the ram 11 is compressed by the cylinder fork shaft, which moves the second valve spool 12 upward. At this time, the air inlet 21 and the air outlet 22 are cut off, and the compressed air in the air outlet 22 flows through the groove on the second valve core 12, the fabrication hole of the valve body 5, and the exhaust port 23 to be discharged. At this time, the main box can be normally engaged.
(2) The ejector rod is in a free state, and the control port is free of air
The vehicle auxiliary box is switching between high and low gears, and the ejector rod 11 is in a free state and is positioned in a groove of the shifting fork shaft. As shown in FIG. 3, when the air inlet 21 is communicated with the air outlet 22, the compressed air enters the air inlet 21 and the air outlet 22 and enters the cylinder for operating the gear locking, and the main box cannot be engaged. Realize the interlocking of main and auxiliary box, protect the synchronous ware of auxiliary box.
(3) Free state of the ejector rod and ventilation of the control port
The vehicle is in a parking power take-off state. As shown in fig. 4, the ram 11 is in a free state and is located in the fork shaft groove. The parking power take-off control port 24 is ventilated, and the piston 3 drives the first valve core 6 to move downwards. At this time, the air inlet 21 to the air outlet 22 are cut off, and the compressed air in the air outlet 22 flows to the air outlet 23 through the small hole of the second valve core 12, the process hole of the valve body 5 and the small hole of the first valve core 6. At the moment, the auxiliary box is in a neutral gear state, and the parking power take-off function can be realized.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An interlocking integrated valve, comprising:
the power takeoff switching valve comprises a valve body (5), wherein an interlocking valve mounting hole and a power takeoff switching valve security rotating hole are formed in the valve body (5); the interlocking valve mounting hole and the power takeoff switching valve safety rotating hole are blind holes, and openings are formed in two side faces opposite to the valve body (5); the interlocking valve mounting hole is communicated with the power takeoff changeover valve ampere-rotation hole through a plurality of process holes formed in the valve body (5); the valve body (5) is also provided with a steam inlet (21), a gas outlet (22), a gas outlet (23) and a parking power take-off control port (24), the steam inlet (21), the gas outlet (23) and the parking power take-off control port (24) are communicated with a power take-off conversion valve installation hole, and the gas outlet (22) is communicated with an interlocking valve installation hole;
a first valve core (6) of the power take-off conversion valve is arranged in a torque bore of the power take-off conversion valve, and the end part of the first valve core is sealed by a sealing cover (2);
and a second valve core (12) of the interlocking valve is arranged in the interlocking valve mounting hole, and the end part of the interlocking valve is provided with a lower cover (9).
2. The interlock integration valve of claim 1, wherein the power take-off switch valve rotation-fitting hole comprises a piston mounting section and a first spool mounting section, the piston mounting section having an inner diameter greater than an inner diameter of the first spool mounting section; the power takeoff switching valve comprises a piston (3), the piston (3) is arranged in a piston mounting section, a sealing cover (2) is arranged on one side close to an opening of a power takeoff switching valve mounting hole, and a retainer ring (1) is arranged at the end part of the sealing cover (2); one side of the piston (3) far away from the opening of the power takeoff changeover valve mounting hole is connected with a first valve core (6), and the first valve core (6) is arranged in the first valve core mounting section.
3. An interlocking integrated valve as claimed in claim 2, characterised in that the piston (3) is sealed with the piston mounting section of the power take-off switch valve mounting bore by a lip seal (4).
4. The interlocking integrated valve as claimed in claim 2, characterized in that the end of the first valve core (6) far away from the piston (3) is provided with a blind hole, a first spring (15) is arranged in the blind hole, one end of the first spring (15) is connected with the first valve core (6), and the other end of the first spring is abutted against the end of the power takeoff switching valve mounting hole.
5. The interlocking integrated valve according to claim 1, characterized in that the interlocking valve comprises a lower cover (9), a mandril (11) and a second valve core (12), wherein the second valve core (12) is arranged in the interlocking valve mounting hole; the lower cover (9) is arranged on the outer side of the interlocking valve mounting hole, and a through hole penetrating through the lower cover (9) is formed in the lower cover (9) and is opposite to the interlocking valve mounting hole; the push rod (11) is arranged in the through hole of the lower cover (9), and one end of the push rod is contacted with the second valve core (12).
6. The interlocking integrated valve according to claim 5, wherein a blind hole is formed in one end, away from the ejector rod (11), of the second valve core (12), a second spring (14) is arranged in the blind hole, one end of the second spring (14) is connected with the second valve core (12), and the other end of the second spring is abutted against the end of the interlocking valve mounting hole.
7. An interlocking integrated valve according to claim 5, characterized in that a guide sleeve (13) is arranged between the second valve core (12) and the interlocking valve mounting hole; a self-lubricating bush (10) is arranged between the ejector rod (11) and the through hole of the lower cover (9).
8. An interlocking integrated valve according to claim 1, characterized in that the exhaust port (23), the exhaust port (23) is provided with a plurality of sealing gaskets (7), and the exhaust port (23) is provided with a dust cover (8).
9. A protection gas circuit system using the interlock integration valve according to any one of claims 1 to 8, comprising a gas storage tank (50), a dual gas control integration valve (56), and an interlock integration valve; the air outlet end of the air storage tank (50) is connected with an air filter (52), and the outlet of the air filter (52) is respectively connected with an air source input port (102) of the double pneumatic control integrated valve (56) and the air inlet of the interlocking integrated valve (53); the air inlet end of the air storage tank (50) is respectively connected with a first electromagnetic valve (S1) and a second electromagnetic valve (S2); the control end of the first electromagnetic valve (S1) is connected with the parking power take-off switch (K1), and the air inlet side of the first electromagnetic valve (S1) is connected with the air outlet end of the auxiliary box air cylinder (54); the control end of the second electromagnetic valve (S2) is connected with the traveling crane power take-off switch (K2), and the air inlet side of the second electromagnetic valve (S2) is connected with the air outlet end of the power take-off cylinder (55);
a pre-selection valve air inlet (101) and a pre-selection valve air outlet (41) of the double pneumatic control integrated valve (56) are respectively connected with an air inlet and an air outlet corresponding to the pre-selection valve (51); a first auxiliary cylinder exhaust port (21) and a second auxiliary cylinder exhaust port (22) of the double pneumatic control integrated valve (56) are communicated with an auxiliary box cylinder (54); and a first air outlet of the interlocking integrated valve (53) is connected with a parking power take-off protection air inlet (42) of the double pneumatic control integrated valve (56), and a second air outlet is connected to the air inlet side of the first electromagnetic valve (S1).
10. A method for controlling a shielding gas circuit system as claimed in claim 9, comprising the steps of:
(1) When the high-low gear of the auxiliary box is switched:
firstly, a pre-selection valve high-low gear shifting block is shifted to perform gear pre-selection operation, at the moment, a pre-selection valve (51) controls the action of a valve core inside a double-pneumatic control integrated valve (55) to complete the position switching of the valve core, and at the moment, an auxiliary box air cylinder (53) does not act; then the gear lever is switched to a neutral gear, the ejector rod (1) of the double pneumatic control integrated valve (55) returns to a free state, the air inlet is communicated with the air outlet, and the auxiliary box air cylinder (53) completes switching under the action of compressed air;
(2) When the main box and the auxiliary box are protected:
in the switching process of the auxiliary box cylinder (53), a mandril of the interlocking integrated valve (53) is in a free state, compressed air which is subjected to pressure reduction through the air filter (52) enters the operating interlocking cylinder through the interlocking integrated valve (53), the gear shifting shaft is locked, and the gear can not be engaged; when the auxiliary box cylinder is switched in place, the ejector rod of the interlocking integrated valve (53) is in a compressed state, compressed air of the interlocking cylinder is exhausted to the atmosphere through the interlocking integrated valve (53), the interlocking shaft is unlocked, and a gear can be engaged;
(3) When parking power take-off is carried out:
the main box is in neutral gear, a parking power take-off switch is turned on, and the auxiliary box cylinder (53) is switched to the neutral gear under the action of high-pressure air of the whole vehicle; the control end of the double pneumatic control integrated valve (55) is ventilated, so that the air valve keeps a low gear, and the parking power take-off protection function is realized; when the pre-selection valve shifting head is switched, the auxiliary box does not act to protect the synchronizer; the control end of the interlocking integrated valve (53) is ventilated, compressed air is discharged through the interlocking integrated valve (53), the main box is unlocked, at the moment, gears can be engaged, and parking power take-off is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210737697.5A CN115182994B (en) | 2022-06-27 | 2022-06-27 | Interlocking integrated valve, protection gas circuit system and control method of protection gas circuit system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210737697.5A CN115182994B (en) | 2022-06-27 | 2022-06-27 | Interlocking integrated valve, protection gas circuit system and control method of protection gas circuit system |
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| CN115182994B CN115182994B (en) | 2023-12-08 |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB839099A (en) * | 1957-09-13 | 1960-06-29 | Bendix Westinghouse Automotive | Control valve mechanism for vehicle air suspension |
| US4182534A (en) * | 1977-07-15 | 1980-01-08 | Snyder David M | Directional control valve system |
| IN169215B (en) * | 1985-07-12 | 1991-09-14 | Caterpillar Inc | |
| JPH07151227A (en) * | 1993-12-01 | 1995-06-13 | Hino Motors Ltd | Interlocking device for transmission |
| DE102008030388A1 (en) * | 2008-06-26 | 2009-01-22 | Daimler Ag | Switching device for multi-speed gear arrangement of e.g. commercial vehicle, has gear selector lever, where activation of lever from one shift track to another shift track takes pace against pressure in cylinder of piston-cylinder device |
| CN101520089A (en) * | 2009-03-26 | 2009-09-02 | 上海汽车变速器有限公司 | Pneumatic shift operating system of secondary box of gearbox |
| DE102013222094A1 (en) * | 2012-11-07 | 2014-05-08 | GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) | In-valve parking brake solenoid assembly |
| CN110594407A (en) * | 2019-08-28 | 2019-12-20 | 西安法士特汽车传动有限公司 | Multi-gear transmission control system |
| CN111425474A (en) * | 2020-04-30 | 2020-07-17 | 河北华春液压汽配有限公司 | Lifting multi-way valve |
| KR102185711B1 (en) * | 2020-03-26 | 2020-12-02 | (주)한빛산업 | Directional control hydraulic valve to prevent malfunction due to fixation and minimize leakage, and control method using the same |
| CN112503216A (en) * | 2020-08-29 | 2021-03-16 | 世格流体控制（上海）有限公司 | Normally closed gas circuit control valve |
| CN112555408A (en) * | 2020-11-20 | 2021-03-26 | 西安法士特汽车传动有限公司 | Transmission integrating auxiliary box lock gear protection and rear power takeoff function and gas circuit system thereof |
| CN113606358A (en) * | 2021-08-27 | 2021-11-05 | 浙江亿日气动科技有限公司 | Electromagnetic integrated valve |
| CN217762287U (en) * | 2022-05-31 | 2022-11-08 | 克诺尔商用车系统（重庆）有限公司 | Gearbox integrated valve |
-
2022
- 2022-06-27 CN CN202210737697.5A patent/CN115182994B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB839099A (en) * | 1957-09-13 | 1960-06-29 | Bendix Westinghouse Automotive | Control valve mechanism for vehicle air suspension |
| US4182534A (en) * | 1977-07-15 | 1980-01-08 | Snyder David M | Directional control valve system |
| IN169215B (en) * | 1985-07-12 | 1991-09-14 | Caterpillar Inc | |
| JPH07151227A (en) * | 1993-12-01 | 1995-06-13 | Hino Motors Ltd | Interlocking device for transmission |
| DE102008030388A1 (en) * | 2008-06-26 | 2009-01-22 | Daimler Ag | Switching device for multi-speed gear arrangement of e.g. commercial vehicle, has gear selector lever, where activation of lever from one shift track to another shift track takes pace against pressure in cylinder of piston-cylinder device |
| CN101520089A (en) * | 2009-03-26 | 2009-09-02 | 上海汽车变速器有限公司 | Pneumatic shift operating system of secondary box of gearbox |
| DE102013222094A1 (en) * | 2012-11-07 | 2014-05-08 | GM Global Technology Operations, LLC (n.d. Ges. d. Staates Delaware) | In-valve parking brake solenoid assembly |
| CN110594407A (en) * | 2019-08-28 | 2019-12-20 | 西安法士特汽车传动有限公司 | Multi-gear transmission control system |
| KR102185711B1 (en) * | 2020-03-26 | 2020-12-02 | (주)한빛산업 | Directional control hydraulic valve to prevent malfunction due to fixation and minimize leakage, and control method using the same |
| CN111425474A (en) * | 2020-04-30 | 2020-07-17 | 河北华春液压汽配有限公司 | Lifting multi-way valve |
| CN112503216A (en) * | 2020-08-29 | 2021-03-16 | 世格流体控制（上海）有限公司 | Normally closed gas circuit control valve |
| CN112555408A (en) * | 2020-11-20 | 2021-03-26 | 西安法士特汽车传动有限公司 | Transmission integrating auxiliary box lock gear protection and rear power takeoff function and gas circuit system thereof |
| CN113606358A (en) * | 2021-08-27 | 2021-11-05 | 浙江亿日气动科技有限公司 | Electromagnetic integrated valve |
| CN217762287U (en) * | 2022-05-31 | 2022-11-08 | 克诺尔商用车系统（重庆）有限公司 | Gearbox integrated valve |
Non-Patent Citations (1)
| Title |
|---|
| 高建敏等: "一种新型车用变速箱主副箱互锁系统设计", 汽车实用技术, no. 8 * |
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| CN115182994B (en) | 2023-12-08 |
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