CN203819220U - Parking brake system of trailer for underground coal mine - Google Patents

Parking brake system of trailer for underground coal mine Download PDF

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Publication number
CN203819220U
CN203819220U CN201420149234.8U CN201420149234U CN203819220U CN 203819220 U CN203819220 U CN 203819220U CN 201420149234 U CN201420149234 U CN 201420149234U CN 203819220 U CN203819220 U CN 203819220U
Authority
CN
China
Prior art keywords
valve
mouth
tractor truck
brake
parking brake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201420149234.8U
Other languages
Chinese (zh)
Inventor
刘开华
马祥宁
陈�峰
万中元
管晓强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Development and Manufacture Center Co Ltd
Original Assignee
Changzhou Development and Manufacture Center Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changzhou Development and Manufacture Center Co Ltd filed Critical Changzhou Development and Manufacture Center Co Ltd
Priority to CN201420149234.8U priority Critical patent/CN203819220U/en
Application granted granted Critical
Publication of CN203819220U publication Critical patent/CN203819220U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A parking brake system of a trailer for an underground coal mine comprises a fuel tank, a filter, a hydraulic pump, a tractor parking brake valve, a tractor parking hydraulic cylinder, a tractor parking brake, a hydraulic control air valve, a first air bag, an air control valve, a relay valve, a check valve, a second air bag, an assistor and trailer brakes. With the adoption of the brake system, the trailer also brakes during parking brake of a tractor, so that the parking braking force is increased greatly; and the reliability of parking brake on a ramp of a vehicle is improved.

Description

The parking brake system of underground mine use towed vehicle
Technical field
The utility model relates to the parking brake system of underground mine use towed vehicle.
Background technology
Underground mine use towed vehicle comprises tractor truck and trailer.According to safety regulations in coal mine, the vehicle under coal mine all needs to arrange service braking system, emergency brake system and parking brake system, and emergency braking and stopping brake are a set of brake system conventionally.Underground mine use towed vehicle can be realized tractor truck trailer when service braking at present braking.But can not realize tractor truck trailer when stopping brake and emergency braking and also have braking.
Utility model content
When the purpose of this utility model is to propose a kind of tractor truck stopping brake, the parking brake system of the underground mine use towed vehicle that trailer is braked simultaneously.
For achieving the above object, the utility model is taked following technical scheme: the parking brake system of a kind of underground mine use towed vehicle the utility model proposes, comprise fuel tank, filter, Hydraulic Pump, tractor truck stopping brake valve, tractor truck parking hydraulic actuating cylinder, tractor truck parking brake, hydraulic control air valve, the first gas bag, Pneumatic valve, relay valve, check valve, the second gas bag, assistor, trailer brake, the oil inlet of Hydraulic Pump is connected with fuel tank by filter, the oil outlet of Hydraulic Pump is connected with the oil inlet P mouth of tractor truck stopping brake valve, the oil outlet A mouth of tractor truck stopping brake valve is connected with the control mouth K mouth of tractor truck parking hydraulic actuating cylinder and hydraulic control air valve respectively by two oily passages, tractor truck parking hydraulic actuating cylinder is controlled the action of tractor truck parking brake, the admission port P mouth of the first gas bag and hydraulic control air valve is connected, the air extractor duct A mouth of hydraulic control air valve connects the admission port of check valve and the K mouth of Pneumatic valve, the air extractor duct of the second gas bag and check valve is connected, admission port P mouth all with the second gas bag of the admission port P mouth of Pneumatic valve and relay valve is connected, the air extractor duct A mouth of Pneumatic valve is connected with the control mouth K mouth of relay valve, the air extractor duct A mouth of relay valve is connected with assistor, assistor is connected with trailer brake.
Between the oil outlet of Hydraulic Pump and fuel tank, be provided with oily passage, in oily passage, be provided with safety valve.
The utlity model has following good effect: the brake system that the utility model adopts makes tractor truck trailer when carrying out stopping brake also have braking, and stopping brake power is improved greatly.Increased the reliability of vehicle stopping brake on ramp.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
The specific embodiment
Embodiment 1
See Fig. 1, the utility model comprises fuel tank 1, filter 2, Hydraulic Pump 3, safety valve 4, tractor truck stopping brake valve 5, tractor truck parking hydraulic actuating cylinder 6, tractor truck parking brake 7, hydraulic control air valve 8, the first gas bag 9, Pneumatic valve 10, relay valve 11, check valve 12, the second gas bag 13, assistor 14, trailer brake 15.
The oil inlet of Hydraulic Pump 3 is connected with fuel tank 1 by filter 2, the oil outlet of Hydraulic Pump 3 is connected with the oil inlet P mouth of tractor truck stopping brake valve 5, the oil outlet A mouth of tractor truck stopping brake valve 5 is connected with the control mouth K mouth of tractor truck parking hydraulic actuating cylinder 6 and hydraulic control air valve 8 respectively by two oily passages, and tractor truck parking hydraulic actuating cylinder 6 is controlled 7 actions of tractor truck parking brake.The admission port P mouth of the first gas bag 9 and hydraulic control air valve 8 is connected, the air extractor duct A mouth of hydraulic control air valve 8 connects the admission port of check valve 12 and the K mouth of Pneumatic valve 10, the air extractor duct of check valve 12 is connected with the second gas bag 13, admission port P mouth all with the second gas bag 13 of the admission port P mouth of Pneumatic valve 10 and relay valve 11 is connected, the air extractor duct A mouth of Pneumatic valve 10 is connected with the control mouth K mouth of relay valve 11, the air extractor duct A mouth of relay valve 11 is connected with assistor 14, and assistor 14 is connected with trailer brake 15.
Between the oil outlet of Hydraulic Pump 3 and fuel tank 1, be provided with drainback passage, safety valve 4 is arranged in this drainback passage.
Under normal motoring condition, P mouth and the A mouth of tractor truck stopping brake valve 5 communicate, and the oil of Hydraulic Pump 3 outputs enters tractor truck parking hydraulic actuating cylinder 6 by tractor truck stopping brake valve 5, and tractor truck parking brake 7 is in braking mode not.The oil that the A mouth of tractor truck stopping brake valve 5 flows out promotes 8 actions of hydraulic control air valve, P mouth and the A mouth of hydraulic control air valve 8 communicate, the gas of the first gas bag 9 enters the control mouth K mouth of Pneumatic valve 10 by hydraulic control air valve 8, Pneumatic valve 10 actions, P mouth and the A mouth of Pneumatic valve 10 are obstructed, and the A mouth of Pneumatic valve 10 can not be exported the control mouth K mouth that gas enters relay valve 11, and the P mouth of relay valve 11 and A mouth are not communicated, the gas of the second gas bag 13 can not be by relay valve 11 to assistor 14, and trailer brake 15 are not braked.
During stopping brake, handle tractor truck stopping brake valve 5, making tractor truck stopping brake valve 5 is that P mouth and the A mouth of tractor truck stopping brake valve 5 do not communicate in the position shown in the figure 1, the oil of Hydraulic Pump 3 outputs can not enter tractor truck parking hydraulic actuating cylinder 6 by tractor truck stopping brake valve 5, be that tractor truck parking hydraulic actuating cylinder 6 does not have pressure oil, tractor truck parking hydraulic actuating cylinder 6 is under the effect of spring, drive 7 brakings of tractor truck parking brake, now the K mouth of hydraulic control air valve 8 does not have pressure oil, making hydraulic control air valve 8 is that P mouth and A mouth do not communicate at state shown in Fig. 1, the gas of the first gas bag 9 can not enter by hydraulic control air valve 8 the control mouth K mouth of Pneumatic valve 10, it is that P mouth and A mouth communicate that Pneumatic valve 10 is in state shown in Fig. 1, gas in the second gas bag 13 enters the control mouth K mouth of relay valve 11 by Pneumatic valve 10, make relay valve 11 actions, the gas of the second gas bag 13 enters assistor 14 by relay valve 11, promote hydraulic oil and enter trailer brake 15, realize the braking of trailer.

Claims (2)

1. the parking brake system of a underground mine use towed vehicle, it is characterized in that: comprise fuel tank (1), filter (2), Hydraulic Pump (3), tractor truck stopping brake valve (5), tractor truck parking hydraulic actuating cylinder (6), tractor truck parking brake (7), hydraulic control air valve (8), the first gas bag (9), Pneumatic valve (10), relay valve (11), check valve (12), the second gas bag (13), assistor (14), trailer brake (15); the oil inlet of Hydraulic Pump (3) is connected with fuel tank (1) by filter (2), the oil outlet of Hydraulic Pump (3) is connected with the oil inlet P mouth of tractor truck stopping brake valve (5), the oil outlet A mouth of tractor truck stopping brake valve (5) is connected with the control mouth K mouth of tractor truck parking hydraulic actuating cylinder (6) and hydraulic control air valve (8) respectively by two oily passages, tractor truck parking hydraulic actuating cylinder (6) is controlled tractor truck parking brake (7) action, the admission port P mouth of the first gas bag (9) and hydraulic control air valve (8) is connected, the air extractor duct A mouth of hydraulic control air valve (8) connects the admission port of check valve (12) and the K mouth of Pneumatic valve (10), the second gas bag (13) is connected with the air extractor duct of check valve (12), the admission port P mouth of Pneumatic valve (10) is connected with admission port P mouth all with the second gas bag (13) of relay valve (11), the air extractor duct A mouth of Pneumatic valve (10) is connected with the control mouth K mouth of relay valve (11), the air extractor duct A mouth of relay valve (11) is connected with assistor (14), assistor (14) is connected with trailer brake (15).
2. the parking brake system of underground mine use towed vehicle according to claim 1, is characterized in that: between the oil outlet of Hydraulic Pump (3) and fuel tank (1), be provided with oily passage, be provided with safety valve (4) in oily passage.
CN201420149234.8U 2014-03-28 2014-03-28 Parking brake system of trailer for underground coal mine Withdrawn - After Issue CN203819220U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420149234.8U CN203819220U (en) 2014-03-28 2014-03-28 Parking brake system of trailer for underground coal mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420149234.8U CN203819220U (en) 2014-03-28 2014-03-28 Parking brake system of trailer for underground coal mine

Publications (1)

Publication Number Publication Date
CN203819220U true CN203819220U (en) 2014-09-10

Family

ID=51474748

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420149234.8U Withdrawn - After Issue CN203819220U (en) 2014-03-28 2014-03-28 Parking brake system of trailer for underground coal mine

Country Status (1)

Country Link
CN (1) CN203819220U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103879394A (en) * 2014-03-28 2014-06-25 常州科研试制中心有限公司 Stopping brake system of trailer used under coal mine shaft
CN104819177A (en) * 2015-03-25 2015-08-05 常州科研试制中心有限公司 Mine truck lifting prohibition walking hydraulic system
CN105346537A (en) * 2015-12-01 2016-02-24 常州轻工职业技术学院 United start-up, extinguishment and manual brake control system for vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103879394A (en) * 2014-03-28 2014-06-25 常州科研试制中心有限公司 Stopping brake system of trailer used under coal mine shaft
CN104819177A (en) * 2015-03-25 2015-08-05 常州科研试制中心有限公司 Mine truck lifting prohibition walking hydraulic system
CN105346537A (en) * 2015-12-01 2016-02-24 常州轻工职业技术学院 United start-up, extinguishment and manual brake control system for vehicle

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20140910

Effective date of abandoning: 20160420

C25 Abandonment of patent right or utility model to avoid double patenting