CN2387528Y - Portable brake performance detector for tractor-semi-trailer - Google Patents
Portable brake performance detector for tractor-semi-trailer Download PDFInfo
- Publication number
- CN2387528Y CN2387528Y CN 98210827 CN98210827U CN2387528Y CN 2387528 Y CN2387528 Y CN 2387528Y CN 98210827 CN98210827 CN 98210827 CN 98210827 U CN98210827 U CN 98210827U CN 2387528 Y CN2387528 Y CN 2387528Y
- Authority
- CN
- China
- Prior art keywords
- tractor
- power bar
- base
- lifting jack
- wire rope
- 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 - Fee Related
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model relates to a portable brake performance detector for a tractor semi-trailer, which comprises a base 1, a jack 2, a force rod 3, a steel cable 4, a tension sensor 5, and a digital display 6. The torque is added to wheels while the wheels are lifted by the jack. When the wheels start to be rotated, that is, when the applied torque and the braking torque are balanced, the braking torque is measured by the tension sensor, and the value of the braking torque is directly displayed by the digital display. The detector has the characteristics of simple structure, convenient portability and operation, low cost, and high detecting precision.
Description
The utility model relates to portable tractor--the detecting instrument of semitrailer unit braking ability.
As everyone knows, baby tractor--semitrailer unit is the main vehicles in China rural area, but further investigation reveals that tractor--the accident rate of semitrailer unit is higher.Be that driver's technical merit is low because road conditions is poor on the one hand; Be that many reasons owing to tractor itself cause on the other hand, particularly not wait be a main cause that causes traffic hazard to the not enough and left and right sides braking moment of braking moment.And agricultural machinery safety supervision department of current China basic unit is when carrying out tractor annual test annual examination, to tractor--the braking ability of semi-mounted unit detects and lacks simple and effective instrument.Although the board-like vehicle braking performances test board of race is arranged on market, apparatus expensive, cost of investment is big, also needs bigger place.And, be difficult to measure exactly effective braking ability of unit because baby tractor--semitrailer unit curb weight is light, and thrust load is little.
The purpose of this utility model is to provide cover portable tractor a--detecting instrument of semitrailer unit braking ability.
The utility model is to realize like this, lifting jack in the braking moment detector withstands on respectively on the steel plate under the wheel shaft center, with steel wire penetrating tyre rim arcuate socket, the other end is enclosed within on the power bar, power bar one end is hinged on the base, and the other end can be in surface level freely rotates around being fixedly hinged, and cover steel wire thereon is perpendicular to ground when guaranteeing test.Rising along with lifting jack, wire rope is constantly strained, pressure transducer is housed in the middle of the wire rope, utilize the bridge balance principle that this physical signalling of damping force is transformed into microvolt level electric signal by sensor again, through electron-amplifier to electric signal amplify, filtering, again the analog quantity electrical signal conversion is become digital signal, will show intuitively with the braking moment value corresponding by nixie display.During detection, slam the semitrailer brake pedal, lifting jack withstands on respectively on the steel plate under the wheel shaft center, the left and right sides, rising along with lifting jack, wire rope is constantly strained, and when lifting jack rises to wire rope and makes the trailer wheel begin to rotate, records the braking moment of that rotating wheel; Lifting jack continues to rise to the another wheel when also beginning to rotate, and reads the damping force moment values again.Like this, just can record the braking moment of left and right wheels respectively.Damping force passes in the pulling force sensor by wire rope, and electronic section directly shows the braking moment value.
Portable tractor described in the utility model--semitrailer unit braking ability detector compared with prior art has following characteristics:
(1) simple in structure, be easy to carry.A whole set of detector only is made up of lifting jack, base, power bar, wire rope, pulling force sensor, lead and digital indicator etc., and is in light weight.
(2) cost of investment is low.The price of a whole set of detector only is about 1000 yuan.
(3) easy to use, detection speed is fast, the measuring accuracy height.A whole set of detector does not need special place, can detect braking moment apace by the lifting jack reinforcing, and directly demonstrates the size of left and right sides braking moment with digital form, and the empty wagons loaded vehicle all can be tested.
(4) have good social benefit and economic benefit.By to tractor--the detection and the adjustment of semitrailer unit braking ability, can reduce traffic hazard, improve the work efficiency of tractor-semitrailer unit.
In order to further specify concrete structure of the present utility model, provide most preferred embodiment below in conjunction with accompanying drawing 1, accompanying drawing 2.
Accompanying drawing 1 is the structural representation of portable tractor-semitrailer unit brake instrument.
Accompanying drawing 2 is the connection synoptic diagram of base and power bar
Among the figure: 1-base, 2-lifting jack, 3-power bar, 4-wire rope, 5-pulling force sensor, 6-digital indicator.Lifting jack (2) by screw retention on base (1).Power bar (3) be positioned at base below, its rear portion is hinged on the base, the rear end has a screw height to regulate, and supports on the ground as a fulcrum during test; Front end is in order to the cover wire rope, and the front portion can be rotated along the arcuate socket on the base by pin, to guarantee that cover wire rope thereon is perpendicular to ground (seeing accompanying drawing 2).Digital indicator (6) connects by lead and pulling force sensor.Wire rope one end passes the tyre rim endoporus, and pulling force sensor (5) is equipped with in the centre, and the other end is enclosed within on the power bar (3).
Claims (3)
1, a kind of baby tractor that is specially adapted to--the portable brake performance detector of semitrailer unit, form by base, lifting jack, power bar, wire rope, pulling force sensor, digital indicator etc., it is characterized in that wire rope one end connects mutually with wheel, the other end is bound up on the power bar, pulling force sensor is housed in the middle of it, and lifting jack places the top of end seat.
2, braking ability detector according to claim 1 is characterized in that an end of power bar is hinged on the base, and the other end can be in surface level freely rotates around being fixedly hinged.
3, braking ability detector according to claim 1, it is characterized in that the power bar be positioned at lifting jack and base below, there is the screw that highly can regulate its rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98210827 CN2387528Y (en) | 1998-01-09 | 1998-01-09 | Portable brake performance detector for tractor-semi-trailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98210827 CN2387528Y (en) | 1998-01-09 | 1998-01-09 | Portable brake performance detector for tractor-semi-trailer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2387528Y true CN2387528Y (en) | 2000-07-12 |
Family
ID=33965718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98210827 Expired - Fee Related CN2387528Y (en) | 1998-01-09 | 1998-01-09 | Portable brake performance detector for tractor-semi-trailer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2387528Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416249C (en) * | 2004-10-13 | 2008-09-03 | 中华人民共和国慈溪出入境检验检疫局 | Machine for testing braking performance of bicycle |
| CN101706374B (en) * | 2009-11-25 | 2012-01-04 | 中国人民解放军总后勤部军事交通运输研究所 | Static detection device of full-trailer impact braking system |
| CN116481837A (en) * | 2023-05-18 | 2023-07-25 | 襄阳达安汽车检测中心有限公司 | Auxiliary trolley for semitrailer parking brake test and test method |
-
1998
- 1998-01-09 CN CN 98210827 patent/CN2387528Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416249C (en) * | 2004-10-13 | 2008-09-03 | 中华人民共和国慈溪出入境检验检疫局 | Machine for testing braking performance of bicycle |
| CN101706374B (en) * | 2009-11-25 | 2012-01-04 | 中国人民解放军总后勤部军事交通运输研究所 | Static detection device of full-trailer impact braking system |
| CN116481837A (en) * | 2023-05-18 | 2023-07-25 | 襄阳达安汽车检测中心有限公司 | Auxiliary trolley for semitrailer parking brake test and test method |
| CN116481837B (en) * | 2023-05-18 | 2024-04-19 | 襄阳达安汽车检测中心有限公司 | Auxiliary trolley for semitrailer parking brake test and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |