CN203832475U - Four-axle chassis service brake system and crane with same - Google Patents
Four-axle chassis service brake system and crane with same Download PDFInfo
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- CN203832475U CN203832475U CN201320634036.6U CN201320634036U CN203832475U CN 203832475 U CN203832475 U CN 203832475U CN 201320634036 U CN201320634036 U CN 201320634036U CN 203832475 U CN203832475 U CN 203832475U
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Abstract
The utility model discloses a four-axle chassis service brake system. A brake valve of the system is communicated with a control opening of a first relay valve of a first brake return circuit and used for controlling brake air chambers of a second axle, brake air chambers on the left side of a first axle and brake air chambers on the right side of the first axle are controlled to be communicated through a second relay valve and a third relay valve respectively, and a control opening of the second relay valve and a control opening of the third relay valve are communicated with air outlets of anti-lock solenoid valves of the second axle. The brake valve is communicated with a control opening of a fourth relay valve of a second brake return circuit and used for controlling brake air chambers of a fourth axle, a brake air chamber on the left side of a third axle and a brake air chamber on the right side of the third axle are controlled to be communicated through a fifth relay valve and a sixth relay valve respectively, and a control opening of the fifth relay valve and a control opening of the sixth relay valve are communicated with air outlets of anti-lock solenoid valves of the fourth axle. Through system optimizing configuration, an abnormal locking phenomenon is completely prevented from occurring in the second bridge and the fourth bridge. On the basis, the utility model further provides a crane with the service brake system.
Description
Technical field
The utility model relates to technical field of engineering machinery, is specifically related to a kind of four bridge chassis service braking systems and has the hoisting crane of this service braking system.
Background technology
Along with the development of world economy, the large-scale construction projects such as wind-powered electricity generation, large-scale petrochemical are increasing, and full ground automobile chassis crane is able to widespread use; Particularly, four bridge crane chassis with its move flexibly, transition is rapid, can drop into fast the feature of operation, is subject to the favor in market.As everyone knows, automobile chassis crane set out on a journey travel and hoisting operation process in, all need to possess good deceleration and stopping performance, to meet the security requirement of overall performance.
At present, the service brake control system of full ground four bridge car hosits is double loop gas circuit braking control system.Particularly, one or two bridges are controlled by a brake circuit, and three or four bridges are controlled by a brake circuit, and the flow direction that realizes high brake pressure gas by brake activation valve and coordinating of relay valve is respectively controlled; Yet, formed by himself and the restriction of control principle, there is following defect in the braking control system of existing four bridge crane chassis:
First, a pin relay valve of a bridge is controlled four compressed air brake cylinders of left and right sides, and compressed air brake cylinder admission port pressure is less than ABS air extractor duct pressure, and intake efficiency is lower; Two bridge left and right sides compressed air brake cylinders are controlled by a pin relay valve respectively, and admission port directly connects air tank, and compressed air brake cylinder admission port pressure is approximately equal to air tank pressure, and intake efficiency is relatively high, can provide lock torque larger.Yet two bridge axle loads are less than a bridge axle load during service brake, even under identical lock torque, than a bridge, also more easily produce locking, and ABS control system controls is a bridge braking, therefore, in braking procedure very easily there is locking phenomenon in two bridges.
Secondly, three or four bridge pin relay valve connection modes are identical with one or two bridges, and in service brake process, four bridge axle loads are less than three bridge axle loads, and the lock torque that four bridge brake circuits provide is greater than three bridges, and do not have ABS system to control, during braking, four bridges are easy to produce locking, cause complete machine braking swerve.
In view of this, the service brake control system urgently looking for another way for existing four bridge chassis is optimized design, to avoid service brake process Zhong Erqiao and four bridges to occur abnormal locking phenomenon, and then avoids the generation of safety misadventure.
Utility model content
For above-mentioned defect, the technical matters that the utility model solves is to provide a kind of service braking system of four bridge chassis, configures, to evade two bridges completely and abnormal locking phenomenon appears in four bridges by system optimization.On this basis, the utility model also provides a kind of hoisting crane with this service braking system.
The service braking system on the four bridge chassis that the utility model provides, wherein, the left and right sides of a bridge and two bridges has two compressed air brake cylinders respectively, and the left and right sides of three bridges and four bridges has a compressed air brake cylinder respectively; And a described bridge and two bridges are controlled by the first brake circuit, described three bridges and four bridges are controlled by the second brake circuit, and control described the first brake circuit and described the second brake circuit by brake activation valve; Described brake activation valve is communicated with the control mouth of the first relay valve of described the first brake circuit, the first air extractor duct of described the first relay valve via the first anti-lock electromagnetic valve be connected with the compressed air brake cylinder in described two bridges left sides, the second air extractor duct is connected with the compressed air brake cylinder on described two bridge right sides via the second anti-lock electromagnetic valve; The compressed air brake cylinder of a described bridge left and right sides is controlled and is communicated with by the second relay valve and the 3rd relay valve respectively, and the control mouth of described the second relay valve is communicated with the air extractor duct of described the first anti-lock electromagnetic valve, the control mouth of described the 3rd relay valve is communicated with the air extractor duct of described the second anti-lock electromagnetic valve; Described brake activation valve is communicated with the control mouth of the 4th relay valve of described the second brake circuit, the first air extractor duct of described the 4th relay valve via the 3rd anti-lock electromagnetic valve be connected with the compressed air brake cylinder in described four bridges left sides, the second air extractor duct is connected with the compressed air brake cylinder on described four bridge right sides via the 4th anti-lock electromagnetic valve; The compressed air brake cylinder of the described three bridge left and right sides is controlled and is communicated with by the 5th relay valve and the 6th relay valve respectively, and the control mouth of described the 5th relay valve is communicated with the air extractor duct of described the 3rd anti-lock electromagnetic valve, the control mouth of described the 6th relay valve is communicated with the air extractor duct of described the 4th anti-lock electromagnetic valve.
Preferably, two air extractor ducts of described the second relay valve are communicated with the front left side of a described bridge and the compressed air brake cylinder of forward right side respectively, and two air extractor ducts of described the 3rd relay valve are communicated with the left rear side of a described bridge and the compressed air brake cylinder of right lateral side respectively.
Preferably, an air extractor duct of described the 5th relay valve is communicated with the compressed air brake cylinder in described three bridge left sides, an air extractor duct of described the 6th relay valve is communicated with the compressed air brake cylinder on described three bridge right sides, and another air extractor duct of described the 5th relay valve is communicated with another air extractor duct of described the 6th relay valve.
Preferably, described in each, relay valve is pin relay valve, and described brake activation valve is foot brake valves.
Preferably, described in each, relay valve is all communicated with same pressure gas source.
The hoisting crane that the utility model provides, comprises four bridge chassis and service braking systems thereof, to carry out four travelling gantry frame brakings; Described service braking system is specially foregoing four bridge chassis service braking systems.
Compared with prior art, the four bridge crane chassis service braking systems that the utility model provides have carried out the improvement of principle.Particularly, its brake activation valve is communicated with the control mouth of the first relay valve of the first brake circuit, the first air extractor duct of this first relay valve via the first anti-lock electromagnetic valve be connected with the compressed air brake cylinder in two bridges left sides, the second air extractor duct is connected with the compressed air brake cylinder on two bridge right sides via the second anti-lock electromagnetic valve; Two bridges are controlled by ABS antiblock device, and by a relay valve, are controlled the pressed gas of four compressed air brake cylinders of two bridges; The compressed air brake cylinder of the one bridge left and right sides is controlled and is communicated with by the second relay valve and the 3rd relay valve respectively, that is to say, four compressed air brake cylinders of a bridge are controlled by two relay valves, and larger lock torque can be provided; And the control mouth of the second relay valve is communicated with the air extractor duct of the first anti-lock electromagnetic valve, the control mouth of the 3rd relay valve is communicated with the air extractor duct of the second anti-lock electromagnetic valve; Thus, under identical lock torque, there will not be two bridge locking phenomenons, improved the road-holding property of car load.
Identical with the configuration principle of a bridge, two bridges, its brake activation valve is communicated with the control mouth of the 4th relay valve of the second brake circuit, the first air extractor duct of the 4th relay valve via the 3rd anti-lock electromagnetic valve be connected with the compressed air brake cylinder in four bridges left sides, the second air extractor duct is connected with the compressed air brake cylinder on four bridge right sides via the 4th anti-lock electromagnetic valve; Four bridges are controlled by ABS antiblock device, and by a relay valve, are controlled the pressed gas of two compressed air brake cylinders of four bridges; The compressed air brake cylinder of its three bridges left and right sides is controlled and is communicated with by the 5th relay valve and the 6th relay valve respectively, that is to say, two compressed air brake cylinders of three bridges are controlled by two relay valves, and larger lock torque can be provided; And the control mouth of the 5th relay valve is communicated with the air extractor duct of the 3rd anti-lock electromagnetic valve, the control mouth of the 6th relay valve is communicated with the air extractor duct of described the 4th anti-lock electromagnetic valve; Similarly, under identical lock torque, there will not be four bridge locking phenomenons, and then can evade complete machine braking swerve completely, further improved the road-holding property of car load.
In preferred version of the present utility model, two air extractor ducts of the second relay valve are communicated with the left rear side of a bridge and the compressed air brake cylinder of right lateral side respectively, and two air extractor ducts of the 3rd relay valve are communicated with the front left side of a bridge and the compressed air brake cylinder of forward right side respectively; That is to say, a relay valve is controlled two of bridge front sides compressed air brake cylinder, and another relay valve is controlled two compressed air brake cylinders of a bridge rear side.So arrange, the branch road of controlling when a side relay valve breaks down, and two compressed air brake cylinders in opposite side left and right still possess braking potential, for service brake safety provides failure-free guarantee.
In another preferred version of the present utility model, an air extractor duct of the 5th relay valve is communicated with the compressed air brake cylinder in three bridge left sides, and an air extractor duct of the 6th relay valve is communicated with the compressed air brake cylinder on three bridge right sides; Another air extractor duct of the 5th relay valve is communicated with another air extractor duct of the 6th relay valve.Thus, can realize in the situation of a side relay valve brake circuit inefficacy, opposite side relay valve supplements air feed, guarantees that this side compressed air brake cylinder still has brake efficiency, farthest utilizes the brake efficiency of existing brake circuit.
The service braking system on the four bridge chassis that the utility model provides is applicable to any type of construction machinery and equipment, is specially adapted to hoisting crane.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the service braking system on four bridge chassis described in the specific embodiment.
In figure:
The first relay valve 11, the first air extractor duct 111, the second air extractor duct 112, control mouth 113, the first anti-lock electromagnetic valve 12, the second anti-lock electromagnetic valve 13, the second relay valve 14, the first air extractor duct 141, the second air extractor duct 142, control mouth 143, the 3rd relay valve 15, the first air extractor duct 151, the second air extractor duct 152, control mouth 153, the 4th relay valve 21, the first air extractor duct 211, the second air extractor duct 212, control mouth 213, the 3rd anti-lock electromagnetic valve 22, the 4th anti-lock electromagnetic valve 23, the 5th relay valve 24, the first air extractor duct 241, the second air extractor duct 242, control mouth 243, the 6th relay valve 25, the first air extractor duct 251, the second air extractor duct 252, control mouth 253, compressed air brake cylinder 3.
The specific embodiment
Core of the present utility model is to provide a kind of service braking system for four bridge chassis, this system is optimized configuration in conjunction with the feature on four bridge chassis to service braking system, two bridges can be evaded completely and abnormal locking phenomenon appears in four bridges, for the traffic safety stability of car load provides failure-free guarantee.Below in conjunction with Figure of description, illustrate present embodiment.
Refer to Fig. 1, this figure is the principle schematic of the service braking system on four bridge chassis described in present embodiment.
Shown in figure, along direction of traffic, be followed successively by from front to back a bridge, two bridges, three bridges and four bridges, in service brake process, two, four bridge axle loads are less than respectively one, three bridge axle loads, therefore, the left and right sides that the left and right sides of one bridge and two bridges has two compressed air brake cylinder 3, three bridges and four bridges respectively has a compressed air brake cylinder 3 respectively; Should be appreciated that the braking principle that each vehicle bridge realizes corresponding vehicle bridge based on compressed air brake cylinder 3 is same as the prior art, therefore do not remake too much description herein.
Similarly, the service braking system on this four bridges chassis comprises two-way brake circuit, and as shown in the figure, one bridge and two bridges are controlled by the first brake circuit, and Qi Sanqiao and four bridges are controlled by the second brake circuit; Two-way brake circuit is controlled the regulation and control of gas circuit by the brake activation valve of, after brake activation valve is opened, air pressure reaches the relay valve in this loop after certain pressure to be opened, and starts respectively, to compressed air brake cylinder 3 air feed of each vehicle bridge, to realize service brake.Wherein, brake activation valve preferably adopts foot brake valves.
Wherein, foot brake valves (not shown) is communicated with the control mouth 113 of the first relay valve 11, the opening of regulation and control the first relay valve 11; The first air extractor duct 111 of this first relay valve 11 via the first anti-lock (ABS) electromagnetic valve 12 be connected with two compressed air brake cylinders 3 in two bridges left sides, the second air extractor duct 112 is connected with the both sides compressed air brake cylinder 3 on two bridge right sides via the second anti-lock electromagnetic valve 13, like this, two bridges are controlled the pressed gas of its four compressed air brake cylinders 3 by first relay valve 11, and Negotiation speed sensor detects the rotating speed of two bridge tires, by ABS antiblock device, controlled; Wherein, the compressed air brake cylinder 3 of the one bridge left and right sides is controlled and is communicated with by the second relay valve 14 and the 3rd relay valve 15 respectively, that is to say, four compressed air brake cylinders 3 of one bridge are controlled by two relay valves (14,15), and the direct Bonding pressure source of the gas of admission port (air tank), identical road surface is adhered under condition, and larger lock torque can be provided; And the control mouth 143 of the second relay valve 14 is communicated with the air extractor duct of the first anti-lock electromagnetic valve 12, the control mouth 153 of the 3rd relay valve 15 is communicated with the air extractor duct of the second anti-lock electromagnetic valve 13, specifically by corresponding ABS electromagnetic valve mineralization pressure gas Yi road, is shunted the control gas circuit of two relay valves of formation control one bridge.Thus, under identical lock torque, there will not be two bridge locking phenomenons.
Wherein, foot brake valves (not shown) is communicated with the control mouth 213 of the 4th relay valve 21, the opening of regulation and control the 4th relay valve 21; The first air extractor duct 211 of the 4th relay valve 21 is connected with two compressed air brake cylinders 3 in four bridge left sides via the 3rd anti-lock electromagnetic valve 22, its second air extractor duct 212 is connected with two compressed air brake cylinders 3 on four bridge right sides via the 4th anti-lock electromagnetic valve 23, like this, four bridges are controlled the pressed gas of its four compressed air brake cylinders 3 by the 4th relay valve 21, and Negotiation speed sensor detects the rotating speed of four bridge tires, by ABS antiblock device, controlled; Wherein, the compressed air brake cylinder 3 of the three bridge left and right sides is controlled and is communicated with by the 5th relay valve 24 and the 6th relay valve 25 respectively, obviously, two compressed air brake cylinders 3 of three bridges are controlled by two relay valves (24,25), and the direct Bonding pressure source of the gas of admission port (air tank), identical road surface is adhered under condition, similarly can provide larger lock torque; And the control mouth 243 of the 5th relay valve 24 is communicated with the air extractor duct of the 3rd anti-lock electromagnetic valve 23, the control mouth 253 of the 6th relay valve 25 is communicated with the air extractor duct of four anti-lock electromagnetic valves 23, thereby the control gas circuit by two relay valves of corresponding ABS electromagnetic valve mineralization pressure gas Yi road shunting formation control three bridges, in like manner, under identical lock torque, there will not be four bridge locking phenomenons.
Here, each relay valve is pin relay valve, to possess good operating characteristic; It should be noted that, pin relay valve can adopt existing techniques in realizing completely.
In order to obtain better service brake safety, can on the basis of above-mentioned service braking system, do further to optimize.As shown in the figure, the first air extractor duct 141 of the second relay valve 14 is communicated with the compressed air brake cylinder 3 of the front left side of a bridge, and its second air extractor duct 142 is communicated with the compressed air brake cylinder 3 of the forward right side of a bridge; The first air extractor duct 151 of the 3rd relay valve 15 is communicated with the left rear side compressed air brake cylinder 3 of a bridge, and the second air extractor duct 152 of the 3rd relay valve 15 is communicated with the compressed air brake cylinder 3 of the right lateral side of a bridge.Like this, utilize a relay valve to control two of bridge front sides compressed air brake cylinder, another relay valve is controlled two compressed air brake cylinders of a bridge rear side, and advantage is in a side relay valve brake circuit fault, two compressed air brake cylinders in opposite side left and right still possess braking potential, thereby have improved service brake safety.
In addition, can also do further to optimize for the concrete application mode of controlling two relay valves of three bridges.As shown in the figure, the first air extractor duct 241 of the 5th relay valve 24 is communicated with the compressed air brake cylinder 3 in three bridge left sides, the second air extractor duct 242 of the 5th relay valve 24 is communicated with the first air extractor duct 251 of the 6th relay valve 25, and the second air extractor duct 252 of the 6th relay valve 25 is communicated with the compressed air brake cylinder 3 on three bridge right sides.Thus, two air extractor ducts (242,251) mouth of two relay valves of three bridges is directly connected, realize in the situation of a side relay valve brake circuit inefficacy, can supplement air feed by opposite side relay valve, the compressed air brake cylinder 3 that guarantees this side still has brake efficiency, has farthest utilized the brake efficiency of existing brake circuit.
Special version, each relay valve can all be communicated with same pressure gas source (not shown), that is to say, and the independent air tank being connected with each relay valve is all unified by air compressor air feed; Can certainly distinguish pressure gas source of separate configurations, obtain in addition preferably braking effect; During actual design, can select as required, as long as meet in the scope that above-mentioned functions needs all ask for protection in the application.
Except the service braking system on aforementioned four bridge chassis, present embodiment also provides a kind of hoisting crane of this service braking system of application, to carry out actv. service brake; Similarly it should be noted that, other functional components such as the chassis of this hoisting crane, electric system, hoisting system, power system all can adopt existing techniques in realizing, thus repeat no more herein, and do not carry out corresponding diagram.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. four bridge chassis service braking systems, wherein, the left and right sides of a bridge and two bridges has two compressed air brake cylinders respectively, and the left and right sides of three bridges and four bridges has a compressed air brake cylinder respectively; And a described bridge and two bridges are controlled by the first brake circuit, described three bridges and four bridges are controlled by the second brake circuit, and control described the first brake circuit and described the second brake circuit by brake activation valve; It is characterized in that,
Described brake activation valve is communicated with the control mouth of the first relay valve of described the first brake circuit, the first air extractor duct of described the first relay valve via the first anti-lock electromagnetic valve be connected with the compressed air brake cylinder in described two bridges left sides, the second air extractor duct is connected with the compressed air brake cylinder on described two bridge right sides via the second anti-lock electromagnetic valve; The compressed air brake cylinder of a described bridge left and right sides is controlled and is communicated with by the second relay valve and the 3rd relay valve respectively, and the control mouth of described the second relay valve is communicated with the air extractor duct of described the first anti-lock electromagnetic valve, the control mouth of described the 3rd relay valve is communicated with the air extractor duct of described the second anti-lock electromagnetic valve;
Described brake activation valve is communicated with the control mouth of the 4th relay valve of described the second brake circuit, the first air extractor duct of described the 4th relay valve via the 3rd anti-lock electromagnetic valve be connected with the compressed air brake cylinder in described four bridges left sides, the second air extractor duct is connected with the compressed air brake cylinder on described four bridge right sides via the 4th anti-lock electromagnetic valve; The compressed air brake cylinder of the described three bridge left and right sides is controlled and is communicated with by the 5th relay valve and the 6th relay valve respectively, and the control mouth of described the 5th relay valve is communicated with the air extractor duct of described the 3rd anti-lock electromagnetic valve, the control mouth of described the 6th relay valve is communicated with the air extractor duct of described the 4th anti-lock electromagnetic valve.
2. four bridge chassis service braking systems according to claim 1, it is characterized in that, two air extractor ducts of described the second relay valve are communicated with the front left side of a described bridge and the compressed air brake cylinder of forward right side respectively, and two air extractor ducts of described the 3rd relay valve are communicated with the left rear side of a described bridge and the compressed air brake cylinder of right lateral side respectively.
3. four bridge chassis service braking systems according to claim 1 and 2, it is characterized in that, an air extractor duct of described the 5th relay valve is communicated with the compressed air brake cylinder in described three bridge left sides, an air extractor duct of described the 6th relay valve is communicated with the compressed air brake cylinder on described three bridge right sides, and another air extractor duct of described the 5th relay valve is communicated with another air extractor duct of described the 6th relay valve.
4. four bridge chassis service braking systems according to claim 3, is characterized in that, described in each, relay valve is pin relay valve, and described brake activation valve is foot brake valves.
5. four bridge chassis service braking systems according to claim 1, is characterized in that, described in each, relay valve is all communicated with same pressure gas source.
6. hoisting crane, comprises four bridge chassis and service braking systems thereof, to carry out four travelling gantry frame brakings; It is characterized in that, described service braking system specifically adopts four bridge chassis service braking systems as described in any one in claim 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634036.6U CN203832475U (en) | 2013-10-14 | 2013-10-14 | Four-axle chassis service brake system and crane with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634036.6U CN203832475U (en) | 2013-10-14 | 2013-10-14 | Four-axle chassis service brake system and crane with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203832475U true CN203832475U (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320634036.6U Withdrawn - After Issue CN203832475U (en) | 2013-10-14 | 2013-10-14 | Four-axle chassis service brake system and crane with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203832475U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103481882A (en) * | 2013-10-14 | 2014-01-01 | 徐州重型机械有限公司 | Service braking system of four-axle chassis and crane with same |
| CN112977374A (en) * | 2021-02-26 | 2021-06-18 | 徐工集团工程机械股份有限公司科技分公司 | Pilot type engineering machinery anti-lock brake system and engineering machinery |
-
2013
- 2013-10-14 CN CN201320634036.6U patent/CN203832475U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103481882A (en) * | 2013-10-14 | 2014-01-01 | 徐州重型机械有限公司 | Service braking system of four-axle chassis and crane with same |
| CN103481882B (en) * | 2013-10-14 | 2015-09-16 | 徐州重型机械有限公司 | Four bridge chassis service braking systems and there is the hoisting crane of this service braking system |
| CN112977374A (en) * | 2021-02-26 | 2021-06-18 | 徐工集团工程机械股份有限公司科技分公司 | Pilot type engineering machinery anti-lock brake system and engineering machinery |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140917 Effective date of abandoning: 20150916 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140917 Effective date of abandoning: 20150916 |
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| RGAV | Abandon patent right to avoid regrant |