CN101725105B - Brake system of mechanical single-drum road roller - Google Patents
Brake system of mechanical single-drum road roller Download PDFInfo
- Publication number
- CN101725105B CN101725105B CN2009102260290A CN200910226029A CN101725105B CN 101725105 B CN101725105 B CN 101725105B CN 2009102260290 A CN2009102260290 A CN 2009102260290A CN 200910226029 A CN200910226029 A CN 200910226029A CN 101725105 B CN101725105 B CN 101725105B
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- China
- Prior art keywords
- brake
- pressure switch
- cylinder
- lock
- control valve
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- 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 - Fee Related
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- Braking Systems And Boosters (AREA)
- Regulating Braking Force (AREA)
Abstract
The present invention relates to a brake system of a mechanical single-drum road roller, which comprises an air storage tank (1), a brake control valve (2), a brake (3), a pressure switch (4) and a changeover governor (5) with a lock, wherein, the brake (3) comprises a cylinder (3.1) and a spring (3.2); the spring (3.2) is sheathed on a piston rod of the cylinder (3.1); the air storage tank (1) is connected with the brake control valve (2) which is connected with a rodless cavity of the cylinder (3.1) of the brake (3); the rodless cavity of the cylinder (3.1) of the brake (3) is connected with the pressure switch (4) which controls the power supply of the changeover governor (5) with a lock; and the pressure switch adopts normally open type pressure switch. The brake system of the invention utilizes an air-break brake principle to connect a pressure switch on a brake control valve or a brake cylinder, and realizes parking brake protection through controlling the changeover governor with a lock by the pressure switch. Only the parking brake is loosed, can the gear be put into gear for driving. The brake system has small operation force and safety and reliability.
Description
(1) technical field
The present invention relates to a kind of stopping brake protection system of mechanical single-drum road roller.Belong to technical field of engineering machinery.
(2) background technology
Traditional mechanical single-drum road roller is to realize stopping brake by flexible axle brake activation device.Its drawback is that actuating force is big.The most important thing is that the operator is easy to forget before machining unclamps stopping brake, thereby causes parking brake to burn, and influences the parking safety.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, the brake system of little, the safe and reliable mechanical single-drum road roller of a kind of actuating force is provided.
The object of the present invention is achieved like this: a kind of brake system of mechanical single-drum road roller, comprise storage tank, brake control valve, drg, pressure switch and the controller for shifting that ends with lock, described drg comprises a cylinder and a spring, spring housing is contained on the piston rod of described cylinder, described storage tank links to each other with the brake control valve admission port, the control of braking valve air gate links to each other with the rodless cavity of the cylinder of drg, the rodless cavity of the cylinder of drg links to each other with pressure switch, the pressure switch control power supply that ends gearshift controller with lock, what described pressure switch adopted is pressure switch open in usual.
The invention has the beneficial effects as follows:
The present invention utilizes on the braking principle basis of dying, and inserts a pressure switch on brake control valve or brake cylinder, controls the controller for shifting that ends with lock by pressure switch and realizes the stopping brake protection.Actuating force is little, safe and reliable.
(4) description of drawings
Fig. 1 is the hydraulic schematic diagram of the brake system of mechanical single-drum road roller of the present invention.
Among the figure:
Storage tank 1, brake control valve 2, drg 3, pressure switch 4, the controller for shifting that ends 5 with lock, change speed gear box 6,24V power supply 7.
(5) specific embodiment
Referring to Fig. 1, Fig. 1 is the hydraulic schematic diagram of the brake system of mechanical single-drum road roller of the present invention.As seen from Figure 1, the brake system of mechanical single-drum road roller of the present invention mainly is made up of storage tank 1, brake control valve 2, drg 3, pressure switch 4, the controller for shifting that ends 5 with lock and change speed gear box 6.Described drg 3 comprises a cylinder 3.1 and a spring 3.2, spring 3.2 is sleeved on the piston rod of described cylinder 3.1, described storage tank 1 links to each other with brake control valve 2, brake control valve 2 links to each other with the rodless cavity of the cylinder 3.1 of drg 3, the rodless cavity of the cylinder 3.1 of drg 3 links to each other with pressure switch 4, the break-make of pressure switch 4 controls controller for shifting that ends 5 with lock and 24V power supply.Change speed gear box 6 is electric liquid shift change speed gear boxs, is used for changing the speed of a motor vehicle, and it is subjected to by controller for shifting 5 controls.What described pressure switch 4 adopted is pressure switch open in usual.
Principle of work:
Brake control valve 2 is pulled out, and the high pressure gas in the drg 3 are discharged into the atmosphere, and drg 3 is in braking mode under the effect of spring.At this moment, pressure switch 4 is in off-state, and the controller for shifting 5 that ends with lock is not communicated with 24V power supply 7, and the controller for shifting that ends 5 with lock is in lockup state, and gear shifting handle can't gear shift.Machine can't be walked.
Brake control valve 2 is depressed, made the gas of storage tank 1 flow into drg 3, braking is removed, while pressure switch 4 closures, the controller for shifting 5 that ends with lock is communicated with the controller for shifting that ends 5 releases with lock with 24V power supply 7, gear shifting handle can gear shift, and machine can be walked.
Annotate:
Among Fig. 1, the dotted line indication circuit; Solid line is represented gas circuit.
Claims (1)
1. the brake system of a mechanical single-drum road roller, it is characterized in that described system comprises storage tank (1), brake control valve (2), drg (3), pressure switch (4), controller for shifting that ends with lock (5) and change speed gear box (6), described drg (3) comprises a cylinder (3.1) and a spring (3.2), spring (3.2) is sleeved on the piston rod of described cylinder (3.1), described storage tank (1) links to each other with brake control valve (2), brake control valve (2) links to each other with the rodless cavity of the cylinder (3.1) of drg (3), the rodless cavity of the cylinder (3.1) of drg (3) links to each other with pressure switch (4), pressure switch (4) control break-make of ending gearshift controller (5) and 24V power supply with lock, change speed gear box (6) is an electric liquid shift change speed gear box, it is by the controller for shifting that ends with lock (5) control, and what described pressure switch (4) adopted is pressure switch open in usual.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102260290A CN101725105B (en) | 2009-11-15 | 2009-11-15 | Brake system of mechanical single-drum road roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102260290A CN101725105B (en) | 2009-11-15 | 2009-11-15 | Brake system of mechanical single-drum road roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101725105A CN101725105A (en) | 2010-06-09 |
| CN101725105B true CN101725105B (en) | 2011-07-20 |
Family
ID=42446605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102260290A Expired - Fee Related CN101725105B (en) | 2009-11-15 | 2009-11-15 | Brake system of mechanical single-drum road roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101725105B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582640A (en) * | 2011-01-06 | 2012-07-18 | 齐齐哈尔轨道交通装备有限责任公司 | Ballast hopper car |
| CN102582641A (en) * | 2011-01-06 | 2012-07-18 | 齐齐哈尔轨道交通装备有限责任公司 | Control system for unloading door of ballast hopper car |
| CN103661320B (en) * | 2013-12-05 | 2015-12-30 | 柳工无锡路面机械有限公司 | A kind of three grades of interlocking brake system of pneumatic tyred roller |
| CN104481706B (en) * | 2014-12-09 | 2016-08-31 | 重庆电讯职业学院 | The automatic energy storage device of automobile pneumatic braking |
-
2009
- 2009-11-15 CN CN2009102260290A patent/CN101725105B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101725105A (en) | 2010-06-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LIUGONG WUXI ROAD MACHINERY CO., LTD. Free format text: FORMER NAME: LIUGONG HIGHWAY MACHINERY CO LTD, JIANGYIN CITY |
|
| CP03 | Change of name, title or address |
Address after: 214444 Jiangsu Jiangyin Lingang New Town machinery equipment Industrial Park Patentee after: Liugong Wuxi Road Surface Machinery Co., Ltd. Address before: 214422, 155 Gu Gu Road, Jiangyin, Jiangsu Patentee before: Jiangyin Liugong Road Machinery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20161115 |