CN2654670Y - Road surface milling and planing machine rear wheel automatic steering and centering device - Google Patents
Road surface milling and planing machine rear wheel automatic steering and centering device Download PDFInfo
- Publication number
- CN2654670Y CN2654670Y CN 200320110753 CN200320110753U CN2654670Y CN 2654670 Y CN2654670 Y CN 2654670Y CN 200320110753 CN200320110753 CN 200320110753 CN 200320110753 U CN200320110753 U CN 200320110753U CN 2654670 Y CN2654670 Y CN 2654670Y
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- relay
- sensors
- control circuit
- trailing wheel
- switch
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Abstract
The utility model belongs to pavement engineering equipments, relating to an automatic steering centering device for the rear wheels of a pavement milling machine. The utility model comprises two sensors arranged on the frame; the two sensors are connected to the control circuit of the steering electromagnetic valve for the rear wheels; the two sensors are arranged on the frame vertically next to each other; each sensor head is aligned to the center line of the outer cylindrical surface of the rotational outriggers for the rear wheels; at the same time, a section of sensor marking block is respectively arranged at the two sides of the center line of the outer cylindrical surface of the rotational outriggers for the rear wheels; the installation height of the two marking blocks are the same with the sensor heads of the two sensors. The utility model has the advantages of simple and definite control principle, simple structure, reliable work performance, and convenient operation.
Description
Technical field
The utility model belongs to pavement engineering equipment, relates to a kind of pavement milling machine trailing wheel and turns to back middle device automatically.
Background technology
Pavement milling machine needs to keep rectilinear motion, when the milling machine front-wheel steer, during trailing wheel must in time turn to back, to guarantee its track accompany movement in operation process.If adopt during the manual operation steering turns to back, on the car or the operating personnel under the car all want repeatable operation steering mechanism, repeatedly the front-wheel rectilinear motion is followed in correction, influences operation effectiveness.If adopt travel switch to control automatically, then its structure complicated, require high, Installation and Debugging inconvenience, and poor reliability when using, fragile.
Summary of the invention
Technical problem to be solved in the utility model is, provide a kind of simple in structure, good reliability, easy to operate pavement milling machine trailing wheel turn to back automatically in device.
Device included two sensors that are installed on the vehicle frame during pavement milling machine trailing wheel of the present utility model turned to back automatically, these two sensors are connected in the control circuit of rear-axle steering electromagnetic valve, two sensors are settled up and down on vehicle frame, its sensing head is all aimed at the center line that trailing wheel rotates the supporting leg external cylindrical surface, rotate supporting leg external cylindrical surface center line both sides at trailing wheel simultaneously and also respectively be provided with one section sensor attribute block, the setting height(from bottom) of two attribute blocks is with equal with the sensing head of two sensors respectively.
Described sensor can adopt two near switch B1 and B2, is connected in parallel between the power positive cathode of control circuit primary circuit near the both positive and negative polarity of switch B1 and B2; Be connected to the negative pole of control circuit secondary circuit through relay K 2 near the signal output part of switch B1; Be connected to the negative pole of control circuit secondary circuit through relay K 1 near the signal output part of switch B2; Simultaneously, the constant close contact K1-1 of relay K 1 is connected in series with relay K 2, and the constant close contact K2-1 of relay K 2 is connected in series with relay K 1; The constant open contact K1-2 of relay K 1 and turn to the left steering of electromagnetic valve Y partly to be serially connected between the both positive and negative polarity of control circuit primary circuit in addition, the constant open contact K2-2 of relay K 2 are then and turn to the right turn of electromagnetic valve Y partly to be serially connected between the both positive and negative polarity of control circuit primary circuit; For to protecting, also can be connected in series a diode respectively at output near switch B1 and B2 near switch B1 and B2.
The utility model is monitored the relative rotation of trailing wheel in real time by the sensor on the vehicle frame, when the trailing wheel supporting leg produces deflection angle, sensor can search attribute block, send signal simultaneously to turning to electromagnetic valve, in time the corner of trailing wheel is adjusted automatically, keep being positioned at straight line with front-wheel, its control principle is simply clear and definite, simple in structure, reliable working performance, easy to operate.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that the A of Fig. 1 is to view;
Fig. 3 is the circuit theory diagrams of the control circuit of the utility model embodiment.
The specific embodiment
As shown in Figure 1 and Figure 2, include two sensors 1 that are installed on the vehicle frame in the device of the present utility model, these two sensors are connected in the control circuit of rear-axle steering electromagnetic valve, two sensors are settled down in vertical direction, its sensing head is all aimed at the center line that trailing wheel rotates supporting leg 2 external cylindrical surfaces, rotate supporting leg external cylindrical surface center line both sides at trailing wheel simultaneously and the setting height(from bottom) of one section sensor attribute block 3, two attribute block 3 respectively is set with equal with the sensing head position of two sensors 1 respectively.
As shown in Figure 3 in the control circuit of embodiment, two are two above-mentioned sensors 1 near switch B1, B2, and B1 and B2 are connected in parallel between the power positive cathode of control circuit primary circuit.
When trailing wheel deflection left, search the attribute block 3 that trailing wheel rotates supporting leg one side near switch B1, then by its signal output part output signal, make relay K 2 get electric work, this moment, the constant close contact K2-1 of relay K 2 disconnected, and relay K 1 can't be worked, simultaneously the constant open contact K2-2 closure of relay K 2, make to turn to the right turn of electromagnetic valve partly to work, during trailing wheel turns to back automatically;
When trailing wheel deflection to the right, search the attribute block 3 that trailing wheel rotates supporting leg one side near switch B2, then by its signal output part output signal, make relay K 1 get electric work, this moment, the constant close contact K1-1 of relay K 1 disconnected, and relay K 2 can't be worked, simultaneously the constant open contact K1-2 closure of relay K 1, make to turn to the left steering of electromagnetic valve partly to work, during trailing wheel turns to back automatically;
The back less than attribute block, promptly stops to send signal near the switch search in the back samsara.
Claims (3)
1, device during a kind of pavement milling machine trailing wheel turns to back automatically, it is characterized in that: include two sensors (1) that are installed on the vehicle frame, these two sensors are connected in the control circuit of rear-axle steering electromagnetic valve, two sensors are settled up and down on vehicle frame, its sensing head is all aimed at the center line that trailing wheel rotates supporting leg (2) external cylindrical surface, rotate supporting leg external cylindrical surface center line both sides at trailing wheel simultaneously and also respectively be provided with one section sensor attribute block (3), the setting height(from bottom) of two attribute blocks (3) is with equal with the sensing head of two sensors (1) respectively.
2, device during pavement milling machine trailing wheel according to claim 1 turns to back automatically, it is characterized in that: described two sensors (1) be two near switch B1 and B2, be connected in parallel between the power positive cathode of control circuit primary circuit near the both positive and negative polarity of switch B1 and B2; Be connected to the negative pole of control circuit secondary circuit through relay K 2 near the signal output part of switch B1; Be connected to the negative pole of control circuit secondary circuit through relay K 1 near the signal output part of switch B2; Simultaneously, the constant close contact K1-1 of relay K 1 is connected in series with relay K 2, and the constant close contact K2-1 of relay K 2 is connected in series with relay K 1; The constant open contact K1-2 of relay K 1 and turn to the left steering of electromagnetic valve Y partly to be serially connected between the both positive and negative polarity of control circuit primary circuit in addition, the constant open contact K2-2 of relay K 2 are then and turn to the right turn of electromagnetic valve Y partly to be serially connected between the both positive and negative polarity of control circuit primary circuit.
3, device during pavement milling machine trailing wheel according to claim 2 turns to back automatically, it is characterized in that: the output near switch B1 and B2 is connected in series a diode respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110753 CN2654670Y (en) | 2003-11-14 | 2003-11-14 | Road surface milling and planing machine rear wheel automatic steering and centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110753 CN2654670Y (en) | 2003-11-14 | 2003-11-14 | Road surface milling and planing machine rear wheel automatic steering and centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2654670Y true CN2654670Y (en) | 2004-11-10 |
Family
ID=34343883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320110753 Expired - Fee Related CN2654670Y (en) | 2003-11-14 | 2003-11-14 | Road surface milling and planing machine rear wheel automatic steering and centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2654670Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074123A (en) * | 2014-06-30 | 2014-10-01 | 湖南三一路面机械有限公司 | Intelligent control method of milling machine |
| CN104195931A (en) * | 2014-09-10 | 2014-12-10 | 湖南三一路面机械有限公司 | Milling machine and support leg swinging device thereof |
-
2003
- 2003-11-14 CN CN 200320110753 patent/CN2654670Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074123A (en) * | 2014-06-30 | 2014-10-01 | 湖南三一路面机械有限公司 | Intelligent control method of milling machine |
| CN104195931A (en) * | 2014-09-10 | 2014-12-10 | 湖南三一路面机械有限公司 | Milling machine and support leg swinging device thereof |
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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 |