CN112964632A - Device for improving ground clearance of road friction coefficient test vehicle - Google Patents
Device for improving ground clearance of road friction coefficient test vehicle Download PDFInfo
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- CN112964632A CN112964632A CN202110189842.6A CN202110189842A CN112964632A CN 112964632 A CN112964632 A CN 112964632A CN 202110189842 A CN202110189842 A CN 202110189842A CN 112964632 A CN112964632 A CN 112964632A
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- driving shaft
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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- Automation & Control Theory (AREA)
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
The invention relates to a device for improving ground clearance of a road friction coefficient test vehicle, which structurally comprises an oil cylinder, a driving shaft and a test wheel, wherein the fixed end of the oil cylinder is fixed in a vehicle box, the movable end of the oil cylinder is connected with the middle part of the driving shaft, one end of the driving shaft is connected with the side surface of the test wheel, and the driving shaft is in rotary connection with a rotating shaft fixed in the vehicle box at the position close to the other end. The invention has the advantages that: structural design is simple reasonable, changes the drive shaft middle part through being connected hydro-cylinder and test wheel, sets up the test wheel at the driveshaft tip, and test car ground clearance can the highest improve about the twice of hydro-cylinder stroke, effectively improves test car trafficability characteristic, and the setting of preferred drive shaft other end proximity switch then can restrict the stroke of hydro-cylinder as required, improves the device suitability.
Description
Technical Field
The invention relates to a device for improving ground clearance of a road friction coefficient test vehicle.
Background
The road friction coefficient test vehicle is generally used for outputting test reports according to formats of different regions, providing accurate transverse friction coefficient values of daily road surfaces, and being used as a road surface maintenance part and providing basis for the road surface maintenance part. Road coefficient of friction test car can divide into integral type and split type, and its coefficient of friction testing arrangement of integral type road coefficient of friction test car is integrated inside the small motor vehicle, and split type then generally is for pulling the little trailer at the small motor vehicle afterbody.
The test wheel of integral type formula road friction coefficient test car transmission case is gone up and down by the hydro-cylinder drive, and drive oil cylinder sets up in the side of test wheel among the prior art, interconnect lug connection (fig. 1), and test car ground clearance (the ground clearance of test wheel promptly) receives the restriction of hydro-cylinder stroke, influences the test car trafficability characteristic.
Disclosure of Invention
The invention provides a device for improving ground clearance of a road friction coefficient test vehicle, aiming at overcoming the defects in the prior art, effectively improving the ground clearance of the test vehicle and improving the trafficability of the test vehicle.
The technical solution of the invention is as follows: the utility model provides a device for promoting road coefficient of friction test car ground clearance, its structure includes hydro-cylinder, drive shaft and test wheel, and wherein the hydro-cylinder stiff end is fixed in the railway carriage, and the drive shaft middle part is connected to the hydro-cylinder loose end, and the test wheel side is connected to drive shaft one end, is close to the other end department on the drive shaft and is connected with the pivot rotation of fixing in the railway carriage.
Preferably, a proximity switch is arranged in the carriage above the other end of the driving shaft and is in signal connection with the oil cylinder.
The invention has the advantages that: structural design is simple reasonable, changes the drive shaft middle part through being connected hydro-cylinder and test wheel, sets up the test wheel at the driveshaft tip, and test car ground clearance can the highest improve about the twice of hydro-cylinder stroke, effectively improves test car trafficability characteristic, and the setting of preferred drive shaft other end proximity switch then can restrict the stroke of hydro-cylinder as required, improves the device suitability.
Drawings
FIG. 1 is a schematic view of a connection structure of an oil cylinder and a test wheel of a road friction coefficient test vehicle in the prior art.
FIG. 2 is a schematic structural diagram of the device for increasing road friction coefficient test vehicle ground clearance according to the present invention.
In the figure, 1 is an oil cylinder, 2 is a driving shaft, 21 is a rotating shaft, 3 is a testing wheel, and 4 is a proximity switch.
Detailed Description
The present invention will be described in further detail with reference to examples and specific embodiments.
As shown in figure 2, the device for improving the ground clearance of the road friction coefficient test vehicle structurally comprises an oil cylinder 1, a driving shaft 2 and a test wheel 3, wherein the fixed end of the oil cylinder 1 is fixed in a vehicle box, the movable end of the oil cylinder 1 is connected with the middle part of the driving shaft 2, one end of the driving shaft 2 is connected with the side surface of the test wheel 3, and the driving shaft 2 is close to the other end and is in rotating connection with a rotating shaft 21 fixed in the vehicle box.
And a proximity switch 4 is arranged in the carriage above the other end of the driving shaft 2, and the proximity switch 4 is in signal connection with the oil cylinder 1.
According to the structure, in operation, when the movable end of the oil cylinder 1 contracts, the test wheel 3 is far away from the ground, when the movable end of the oil cylinder 1 extends, the driving shaft 2 is pushed to rotate around the rotating shaft 21, the driving shaft 2 drives the test wheel 3 to descend, the descending distance of the driving shaft 2 is larger than the extending distance of the movable end of the oil cylinder 1, the stroke limit of the oil cylinder is reduced, the passing performance of a test vehicle can be effectively improved, the optimized proximity switch 4 can be installed at different heights as required, when the other end of the driving shaft 2 rises to a certain height, the oil cylinder 1 is controlled to stop extending, and.
All the above components are prior art, and those skilled in the art can use any model and existing design that can implement their corresponding functions.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (2)
1. The utility model provides a promote road coefficient of friction test car ground clearance's device, its characteristic includes hydro-cylinder (1), drive shaft (2) and test wheel (3), and wherein hydro-cylinder (1) stiff end is fixed in the railway carriage, and drive shaft (2) middle part is connected to hydro-cylinder (1) expansion end, and test wheel (3) side is connected to drive shaft (2) one end, is close to other end department on drive shaft (2) and rotates with pivot (21) of fixing in the carriage and is connected.
2. The device for improving the ground clearance of the road friction coefficient test vehicle as claimed in claim 1, wherein a proximity switch (4) is arranged in the vehicle box above the other end of the driving shaft (2), and the proximity switch (4) is in signal connection with the oil cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110189842.6A CN112964632A (en) | 2021-02-18 | 2021-02-18 | Device for improving ground clearance of road friction coefficient test vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110189842.6A CN112964632A (en) | 2021-02-18 | 2021-02-18 | Device for improving ground clearance of road friction coefficient test vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112964632A true CN112964632A (en) | 2021-06-15 |
Family
ID=76285125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110189842.6A Pending CN112964632A (en) | 2021-02-18 | 2021-02-18 | Device for improving ground clearance of road friction coefficient test vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112964632A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6928857B1 (en) * | 2004-07-14 | 2005-08-16 | Glen A. J. Brown | Apparatus for continuous measurement of road surface friction |
| CN202599799U (en) * | 2012-03-30 | 2012-12-12 | 云南省公路科学技术研究院 | Detecting equipment for detecting friction coefficient of highway pavement |
| JP2013050416A (en) * | 2011-08-31 | 2013-03-14 | Japan Aerospace Exploration Agency | Road surface friction coefficient measurement device |
| CN205643127U (en) * | 2016-04-15 | 2016-10-12 | 天津鑫隆空港科技有限公司 | A way face friction coefficient test car testing wheel locking system |
| CN205643128U (en) * | 2016-04-15 | 2016-10-12 | 天津鑫隆空港科技有限公司 | A way face friction coefficient test car |
| CN208688962U (en) * | 2018-06-30 | 2019-04-02 | 天津鑫隆空港科技有限公司 | A kind of road face friction coefficient testing car tests wheel locking device |
| CN209387491U (en) * | 2019-01-14 | 2019-09-13 | 北京今谷神箭测控技术研究所 | Monocycly cross force frictional factor test device |
-
2021
- 2021-02-18 CN CN202110189842.6A patent/CN112964632A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6928857B1 (en) * | 2004-07-14 | 2005-08-16 | Glen A. J. Brown | Apparatus for continuous measurement of road surface friction |
| JP2013050416A (en) * | 2011-08-31 | 2013-03-14 | Japan Aerospace Exploration Agency | Road surface friction coefficient measurement device |
| CN202599799U (en) * | 2012-03-30 | 2012-12-12 | 云南省公路科学技术研究院 | Detecting equipment for detecting friction coefficient of highway pavement |
| CN205643127U (en) * | 2016-04-15 | 2016-10-12 | 天津鑫隆空港科技有限公司 | A way face friction coefficient test car testing wheel locking system |
| CN205643128U (en) * | 2016-04-15 | 2016-10-12 | 天津鑫隆空港科技有限公司 | A way face friction coefficient test car |
| CN208688962U (en) * | 2018-06-30 | 2019-04-02 | 天津鑫隆空港科技有限公司 | A kind of road face friction coefficient testing car tests wheel locking device |
| CN209387491U (en) * | 2019-01-14 | 2019-09-13 | 北京今谷神箭测控技术研究所 | Monocycly cross force frictional factor test device |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210615 |