CN201554803U - Brake for gear box - Google Patents

Brake for gear box Download PDF

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Publication number
CN201554803U
CN201554803U CN2009202817045U CN200920281704U CN201554803U CN 201554803 U CN201554803 U CN 201554803U CN 2009202817045 U CN2009202817045 U CN 2009202817045U CN 200920281704 U CN200920281704 U CN 200920281704U CN 201554803 U CN201554803 U CN 201554803U
Authority
CN
China
Prior art keywords
piston
braking
brake
countershaft
friction plate
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.)
Expired - Lifetime
Application number
CN2009202817045U
Other languages
Chinese (zh)
Inventor
张永刚
李发有
马书会
曹文斌
吴常柱
赵善析
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.)
China National Heavy Duty Truck Group Jinan Power Co Ltd
China National Heavy Duty Truck Group Taian Wuyue Special Vehicle Co Ltd
Original Assignee
China National Heavy Duty Truck Group Jinan Power 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 China National Heavy Duty Truck Group Jinan Power Co Ltd filed Critical China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority to CN2009202817045U priority Critical patent/CN201554803U/en
Application granted granted Critical
Publication of CN201554803U publication Critical patent/CN201554803U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a brake for a gear box and belongs to the technical field of brake devices. The brake for a gear box is provided with a top pin at a shaft center in the shaft end of a counter shaft and a friction plate is arranged on the periphery of the shaft end, wherein the top pin is connected with a return spring in the counter shaft; a piston is connected with the exterior of the counter shaft; the piston is connected with an end cover through an O-shaped sealing ring sleeved on the piston; an air cavity is formed between the piston and the counter shaft; the air cavity is connected with a brake air pipe; the brake air pipe is connected with a solenoid valve; the friction plate is connected with a brake block through a stopping pin; and the brake block is connected with the piston. The utility model can shorten the gear synchronous time when the gear box is speeded up, can rapidly shift, can radiate the heat generated by braking as soon as possible and can decrease the loss.

Description

A kind of gearbox brake
Technical field:
The utility model relates to a kind of braking device, particularly a kind of break of lorry mechanical gear box.
Background technique:
Current, heavy gearbox is to lean on the natural reduction of speed of gear to reach the synchronous of gearshift when upshift, the gearshift time is long, can not satisfy the needs of mechanical automatic gearbox (AMT), the lock in time of gear when reducing upshift, be badly in need of a kind of gearbox brake of exploitation mechanism.
The model utility content:
The purpose of this utility model provides a kind of gearbox brake, the gear lock in time when this kind break can shorten the gearbox upshift.
The technological scheme that the utility model is taked is:
A kind of gearbox brake comprises countershaft, it is characterized in that being provided with ejector pin at the axle head inner axes place of countershaft, and the axle head periphery is provided with friction plate; Ejector pin is connected with return spring in countershaft, be connected with piston outside countershaft, and piston links to each other with end cap by being enclosed within its outer O RunddichtringO, forms air chamber between piston and the end cap, and air chamber is connected with the braking tracheae, and the braking tracheae is connected with solenoid valve; Friction plate is connected with braking plate by stop pin, and braking plate and piston join.
Described friction plate is connected with countershaft by spline.
Described braking tracheae is fixed on the end cap.
Described braking plate and stop pin are for flexibly connecting.
The upper end of described end cap is provided with oil inlet pipe, and oil inlet pipe is leading to the space between friction plate and braking plate.
Above-mentioned friction plate can rotate with countershaft, also can move axially along spline, and braking plate pins and can not rotate by stop pin, but can move axially along stop pin, piston leans against on the inwall of end cap under the effect of return spring and ejector pin, has the gap between friction plate and the braking plate; When the speed changer upshift, solenoid valve is received instruction and is started working, and a mouth and b mouth are connected, and pressurized gas passes through solenoid valve, enter the air chamber that end cap and piston and O RunddichtringO form along the braking tracheae, pressurized gas promotes piston and moves right, and braking plate moves axially along stop pin, and eliminate in the gap between braking plate and the friction plate, because braking plate can not rotate, thereby the generation friction torque is slowed down friction plate and countershaft, thereby is taken the effect that makes the gear reduction of speed to.The utility model is applicable to multiple vehicle, is specially adapted to HW-A7 series vehicle.
Gear lock in time when the utility model can shorten the gearbox upshift, realize crash change of speed, the heat that braking simultaneously produces can shed as early as possible, reduces loss.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Wherein: 1. solenoid valve, 2. braking tracheae, 3. end cap, 4. piston, 5.O RunddichtringO, 6. oil inlet pipe, 7. countershaft end cap, 8. countershaft, 9. return spring, 10. ejector pin, 11. friction plates, 12. braking plates, 13. stop pin.
Embodiment:
Further specify the utility model below in conjunction with embodiment.
A kind of gearbox brake comprises countershaft 8, is provided with ejector pin 10 at the axle head inner axes place of countershaft 8, and the axle head periphery is provided with friction plate 11; Ejector pin 10 is connected with return spring 9 in countershaft 8, be connected with piston 4 outside countershaft 8, and piston 4 links to each other with end cap 3 by being enclosed within its outer O RunddichtringO 5, forms air chamber between piston 4 and the end cap 3, and air chamber is connected with braking tracheae 2, and braking tracheae 2 is connected with solenoid valve 1; Friction plate 11 is connected with braking plate 12 by stop pin 13, and braking plate 12 joins with piston 4.
Friction plate 11 is connected with countershaft 8 by spline.Braking tracheae 2 is fixed on the end cap 3.Braking plate 12 is flexible connection with stop pin 13.The upper end of end cap 3 is provided with oil inlet pipe 6, and oil inlet pipe 6 is leading to the space of 12 of friction plate 11 and braking plates.
Friction plate 11 relies on spline and countershaft 8 to connect, friction plate 11 rotates with countershaft 8, also can move axially along spline, braking plate 12 pins and can not rotate by stop pin 13, but can move axially along stop pin, piston 4 leans against on the inwall of end cap 3 under the effect of return spring 9 and ejector pin 10, has the gap between friction plate 11 and the braking plate 12; When the speed changer upshift, solenoid valve 1 is received instruction and is started working, a mouth inlet opening and b mouth delivery outlet are connected, pressurized gas is by solenoid valve 1, enter the cavity that end cap 3 and piston 4 and O RunddichtringO 5 form along braking tracheae 2, pressurized gas promotes piston 4 and moves right, braking plate 12 moves axially along stop pin 13, eliminate in gap between braking plate 12 and the friction plate 11, because braking plate 12 can not rotate, thereby the generation friction torque is slowed down friction plate 11 and countershaft 8, thereby is taken the effect that makes the gear reduction of speed to, the heat that braking produces, rely on the forced lubricating system of speed changer to dispel the heat, lubricant oil flows on friction plate 11 and the braking plate 12 via oil inlet pipe 6, and the torrid zone that braking produces is walked; When solenoid valve 1 is not worked, pressurized gas in the cavity that end cap 3, piston 4 and O RunddichtringO 5 form is drained from the relief opening of solenoid valve 1, simultaneously, piston 4 is under the effect of return spring 9 and ejector pin 10, be moved to the left, produce the gap between braking plate 12 and the friction plate 11, no longer produce friction torque, braking action is eliminated.

Claims (5)

1. a gearbox brake comprises countershaft, it is characterized in that being provided with ejector pin at the axle head inner axes place of countershaft, and the axle head periphery is provided with friction plate; Ejector pin is connected with return spring in countershaft, be connected with piston outside countershaft, and piston links to each other with end cap by being enclosed within its outer O RunddichtringO, forms air chamber between piston and the end cap, and air chamber is connected with the braking tracheae, and the braking tracheae is connected with solenoid valve; Friction plate is connected with braking plate by stop pin, and braking plate and piston join.
2. according to the described a kind of gearbox brake of claim 1, it is characterized in that described friction plate is connected with countershaft by spline.
3. according to the described a kind of gearbox brake of claim 1, it is characterized in that described braking tracheae is fixed on the end cap.
4. according to the described a kind of gearbox brake of claim 1, it is characterized in that described braking plate and stop pin are for flexibly connecting.
5. according to the described a kind of gearbox brake of claim 1, it is characterized in that the upper end of described end cap is provided with oil inlet pipe, oil inlet pipe is leading to the space between friction plate and braking plate.
CN2009202817045U 2009-11-19 2009-11-19 Brake for gear box Expired - Lifetime CN201554803U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202817045U CN201554803U (en) 2009-11-19 2009-11-19 Brake for gear box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202817045U CN201554803U (en) 2009-11-19 2009-11-19 Brake for gear box

Publications (1)

Publication Number Publication Date
CN201554803U true CN201554803U (en) 2010-08-18

Family

ID=42614485

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009202817045U Expired - Lifetime CN201554803U (en) 2009-11-19 2009-11-19 Brake for gear box

Country Status (1)

Country Link
CN (1) CN201554803U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102943828A (en) * 2012-11-26 2013-02-27 陕西法士特齿轮有限责任公司 Automated mechanical transmission (AMT) braking device
CN114110156A (en) * 2021-11-29 2022-03-01 中国重汽集团济南动力有限公司 AMT transmission brake gas circuit and control method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102943828A (en) * 2012-11-26 2013-02-27 陕西法士特齿轮有限责任公司 Automated mechanical transmission (AMT) braking device
CN102943828B (en) * 2012-11-26 2015-05-13 陕西法士特齿轮有限责任公司 Automated mechanical transmission (AMT) braking device
CN114110156A (en) * 2021-11-29 2022-03-01 中国重汽集团济南动力有限公司 AMT transmission brake gas circuit and control method thereof

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GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20100818