CN102358278A - Engineering mechanical braking system - Google Patents
Engineering mechanical braking system Download PDFInfo
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- CN102358278A CN102358278A CN2011102150512A CN201110215051A CN102358278A CN 102358278 A CN102358278 A CN 102358278A CN 2011102150512 A CN2011102150512 A CN 2011102150512A CN 201110215051 A CN201110215051 A CN 201110215051A CN 102358278 A CN102358278 A CN 102358278A
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- brake
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- gate circuit
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Abstract
The invention discloses an engineering mechanical braking system, which comprises a gearbox, a controller, a diode OR gate circuit, a service braking device and an auxiliary braking device. The service braking device comprises a foot-controlled brake valve, a service brake lamp switch, a booster and service brakes. One path of a service brake lamp switch circuit is connected with a left brake indicator lamp and a right brake indicator lamp. The auxiliary brake device comprises a hand-operated air brake valve, an auxiliary brake lamp switch, a spring brake air chamber and an auxiliary brake. One path of an auxiliary brake lamp switch circuit is connected with an auxiliary brake system indicator lamp. The output end of the diode OR gate circuit is connected with the brake signal input tend of the controller. The other path of the service brake lamp switch is connected with one input end of the diode OR gate circuit. The other path of the auxiliary brake lamp switch circuit of the auxiliary brake device is connected with the other input end of the diode OR gate circuit. The service braking and auxiliary braking of the system both realize automatic power cutting-off, so braking reliability is improved.
Description
Technical field
The present invention relates to the construction machinery and equipment brake system.
Background technology
Be to guarantee that the safety of going, construction machinery and equipment generally have independently the service brake auxiliary braking system of unifying, auxiliary braking system is when service braking system lost efficacy, and makes the system of machine brake.Service braking system comprises the controller and the service brake device of change speed gear box, control change speed gear box; The service brake device comprises by foot control brake activation valve, service brake light switch, assistor and running brake; The circuit of service brake light switch has two-way output; Wherein one the tunnel is connected with left and right braking indicator lamp; Another road is connected with the speed-slackening signal input end of controller, and complemental brake system comprises the brake application by spring air chamber of manual air brake valve, auxiliary braking light switch, additional brake and the action of control additional brake, and the circuit of auxiliary braking light switch is connected with the auxiliary braking system indicator lamp.Above-mentioned construction machinery and equipment brake system, the vehicle brake of being expert at is implemented glancing impact, can cut off the transmission of power of change speed gear box to wheel automatically.Realize glancing impact at needs with auxiliary braking system, can not cut off the transmission of power of change speed gear box to wheel automatically.In the prior art; The auxiliary braking system glancing impact; Realize power cut like needs: then need the driver before, make change speed gear box place neutral gear through manual operation earlier, to realize power cut with auxiliary braking system; The method needs the driver to possess high emergency treatment ability and disposal operations is many, the time is long, and the reliability of visible its power cut is not high.For the fluid control change speed gear box; Change the gear shutoff valve that logical valve makes the pressurized air of auxiliary braking system be connected to the fluid control change speed gear box and realize power cut with two-way; The method can only be used for fluid control change speed gear box and two-way, and to change logical valve be the Pneumatic and hydraulic valve, and reliability is far below semiconductor devices.The position transduser of mechanical operating mechanism is installed at auxiliary braking system in addition; Processing through sensor signal; Realize power cut, the deficiency that the method exists is that the precision of braking maneuver time opening is low because of need obtain signal from mechanical motion of mechanism position; Structure and signal handling equipment are complicated, and reliability is low.
Summary of the invention
The objective of the invention is to propose a kind ofly improve the braking reliability and service brake simple in structure all realizes the construction machinery and equipment brake system that automatic power cuts off with auxiliary braking, native system is applicable to the brake system of using pressurized air to use as the construction machinery and equipment of the original power of braking.
For achieving the above object, the present invention takes following technical scheme.The construction machinery and equipment brake system that the present invention proposes; The controller and service brake device and the complemental brake system that comprise change speed gear box, control change speed gear box; The service brake device comprises foot control brake activation valve, assistor, and running brake, serial connection service brake light switch on the compressed air tube between foot control brake activation valve and the assistor; The circuit of service brake light switch has two-way output, and wherein one the tunnel is connected with left and right braking indicator lamp; Said complemental brake system comprises the brake application by spring air chamber of manual air brake valve, additional brake and the action of control additional brake; Serial connection auxiliary braking light switch on the compressed air tube between manual air brake valve and the brake application by spring air chamber; The circuit of auxiliary braking light switch is connected with the auxiliary braking system indicator lamp; Native system is provided with the diode OR gate circuit; The diode OR gate circuit has two input ends and a mouth, and the mouth of diode OR gate circuit is that the BR end is connected with the speed-slackening signal input end of controller, and another road output of service brake light switch circuit is connected with an input end of diode OR gate circuit; The circuit of the auxiliary braking light switch of complemental brake system increases by one tunnel output, and this road output is connected with another input end of diode OR gate circuit.
The present invention is provided with the diode OR gate circuit, realizes the signal transmission through semiconductor devices, and the signal transmission is correct fast.Step on separately the foot control air brake valve do service brake or separately the manual air brake valve of pull-up make auxiliary braking, when perhaps doing service brake and auxiliary braking simultaneously, all can realize power cut.The present invention has improved the reliability of braking and simple in structure, and repacking and maintenance all make things convenient for.
Description of drawings
Fig. 1 is a diagrammatic sketch of the present invention.
The specific embodiment
Embodiment 1
See Fig. 1, present embodiment uses the original power of pressurized air as braking, comprises the change speed gear box 1 of electricity-hydraulic control system, controller 2 and the service brake device 4 and the complemental brake system 5 of the above-mentioned fast case 1 of control.Service brake device 4 comprises foot control brake activation valve 4-1, assistor 4-3 and running brake 4-4.Serial connection service brake light switch 4-2 on the compressed air tube between foot control brake activation valve 4-1 and the assistor 4-3.Complemental brake system 5 comprises the brake application by spring air chamber 5-3 of manual air brake valve 5-1, additional brake 5-4 and control additional brake 5-4 action.Serial connection auxiliary braking light switch 5-2 on the compressed air tube between manual air brake valve 5-1 and the brake application by spring air chamber 5-3.Native system is provided with diode OR gate circuit 3, and diode OR gate circuit 3 has two input end A, B and a mouth P, and diode OR gate circuit 3 mouths are that the BR end is connected with the speed-slackening signal input end of controller 2.
The circuit of said service brake light switch 4-2 has two-way output, and wherein one tunnel output is connected with left and right braking indicator lamp 6, and another road output is connected with an input end A of diode OR gate circuit 3.The circuit of the auxiliary braking light switch 5-2 of complemental brake system 5 increases by one tunnel output; One tunnel output of the circuit of auxiliary braking light switch 5-2 is connected with auxiliary braking system indicator lamp 7, and one tunnel output of increase is connected with another input end B of diode OR gate circuit 3.
In the time of need doing service brake; Step on foot control air brake valve 4-1; Assistor 4-3 makes the pressure of braking liquid be increased to compressed-air actuated more than ten times to more than 20 times pressure of compressed air and energy; Through brake piping high hydraulic brake fluid is transferred to the brake cylinder 4-4-1 among the drg 4-1, the piston motion of brake cylinder 4-4-1 makes drg realize braking; 4-1 when pin unclamps the foot control air brake valve, braking is removed.
When depressing manual air brake valve 5-1, pressurized air to brake application by spring air chamber 5-3, makes the length of spring compressed in the brake application by spring air chamber 5-3 through manual air brake valve 5-1, and piston rod pulling Rocker arm 5-3-1 upwards turns to the C position, and braking is removed; In the time of need making auxiliary braking, the manual air brake valve 5-1 of pull-up, pressurized air is disposed to atmosphere through manual air brake valve 5-1, and the spring in the brake application by spring air chamber 5-3 makes piston rod promote rocking arm and is swung down to the D position, makes the additional brake braking.
When doing service brake; Because of air pressure raises; The signal that service brake light switch 4-2 sends through an input end A of diode OR gate circuit to the speed-slackening signal input end of controller be the BR end, make the change speed gear box of electricity-hydraulic control system be in neutral state, realize the power cut of driving system.When making auxiliary braking; Because of air pressure is reduced to bar pressure; The signal that auxiliary braking light switch 5-2 sends through another input end B of diode OR gate circuit to controller the speed-slackening signal input end, make the change speed gear box of electricity-hydraulic control system be in neutral state, realize the power cut of driving system.
Claims (1)
1. construction machinery and equipment brake system; The controller (2) and service brake device (4) and the complemental brake system (5) that comprise change speed gear box (1), control change speed gear box; Service brake device (4) comprises foot control brake activation valve (4-1), assistor (4-3); And running brake (4-4); Serial connection service brake light switch (4-2) on the compressed air tube between foot control brake activation valve (4-1) and the assistor (4-3), the circuit of service brake light switch (4-2) has two-way output, and wherein one the tunnel is connected with left and right braking indicator lamp (6); Said complemental brake system (5) comprises the brake application by spring air chamber (5-3) of manual air brake valve (5-1), additional brake (5-4) and control additional brake (5-4) action; Serial connection auxiliary braking light switch (5-2) on the compressed air tube between manual air brake valve (5-1) and the brake application by spring air chamber (5-3); The circuit of auxiliary braking light switch (5-2) is connected with auxiliary braking system indicator lamp (7); It is characterized in that: native system is provided with diode OR gate circuit (3); Diode OR gate circuit (3) has two input ends (A, B) and a mouth (P); The mouth of diode OR gate circuit (3) is that the BR end is connected with the speed-slackening signal input end of controller (2); Another road output of service brake light switch (4-2) circuit is connected with an input end (A) of diode OR gate circuit (3); The circuit of the auxiliary braking light switch (5-2) of complemental brake system (5) increases by one tunnel output, and this road output is connected with another input end (B) of diode OR gate circuit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110215051 CN102358278B (en) | 2011-07-29 | 2011-07-29 | Engineering mechanical braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110215051 CN102358278B (en) | 2011-07-29 | 2011-07-29 | Engineering mechanical braking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102358278A true CN102358278A (en) | 2012-02-22 |
| CN102358278B CN102358278B (en) | 2013-07-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110215051 Expired - Fee Related CN102358278B (en) | 2011-07-29 | 2011-07-29 | Engineering mechanical braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102358278B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114537348A (en) * | 2022-01-26 | 2022-05-27 | 山东能源重装集团泰装工程装备制造有限公司 | Braking system of trackless rubber-tyred vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0415689A1 (en) * | 1989-08-31 | 1991-03-06 | Bendix Hvcg Europe Limited | Fluid pressure operable braking apparatus |
| CN201525371U (en) * | 2009-11-17 | 2010-07-14 | 东风汽车公司 | Air brake system with low pressure safety protection |
| CN201745568U (en) * | 2010-08-18 | 2011-02-16 | 内蒙古北方重型汽车股份有限公司 | Heavy mineral dump truck brake control system |
| CN202175034U (en) * | 2011-07-29 | 2012-03-28 | 常林股份有限公司 | Braking system of engineering machinery |
-
2011
- 2011-07-29 CN CN 201110215051 patent/CN102358278B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0415689A1 (en) * | 1989-08-31 | 1991-03-06 | Bendix Hvcg Europe Limited | Fluid pressure operable braking apparatus |
| CN201525371U (en) * | 2009-11-17 | 2010-07-14 | 东风汽车公司 | Air brake system with low pressure safety protection |
| CN201745568U (en) * | 2010-08-18 | 2011-02-16 | 内蒙古北方重型汽车股份有限公司 | Heavy mineral dump truck brake control system |
| CN202175034U (en) * | 2011-07-29 | 2012-03-28 | 常林股份有限公司 | Braking system of engineering machinery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114537348A (en) * | 2022-01-26 | 2022-05-27 | 山东能源重装集团泰装工程装备制造有限公司 | Braking system of trackless rubber-tyred vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102358278B (en) | 2013-07-17 |
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Effective date of registration: 20160802 Address after: 213022 No. 36 middle Huashan Road, Xinbei District, Jiangsu, Changzhou Patentee after: China machinery heavy industry group Chang Linzhu Co., Ltd. Address before: 213002 No. 10 Chang Linzhu Road, bell tower area, Jiangsu, Changzhou Patentee before: Changlin Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20170729 |
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| CF01 | Termination of patent right due to non-payment of annual fee |