CN214271615U - Unequal arm steering mechanism of wheel type milling machine - Google Patents
Unequal arm steering mechanism of wheel type milling machine Download PDFInfo
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- CN214271615U CN214271615U CN202022859355.XU CN202022859355U CN214271615U CN 214271615 U CN214271615 U CN 214271615U CN 202022859355 U CN202022859355 U CN 202022859355U CN 214271615 U CN214271615 U CN 214271615U
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Abstract
The utility model relates to an unequal arm steering mechanism of a wheel type milling machine, which comprises a left steering arm, a right steering arm, a steering oil cylinder, a support frame and a length-adjustable tie rod, the support frame is positioned between the steering oil cylinder and the tie rod, the oil cylinder rod of the steering oil cylinder is hinged with the top of the left steering arm, the cylinder barrel of the steering oil cylinder is hinged with the top of the right steering arm, one end of the tie rod is hinged with the bottom of the left steering arm, the other end of the tie rod is hinged with the bottom of the right steering arm, one end of the support frame is hinged with the left steering arm, the hinge point divides the left steering arm into a first left steering arm and a second left steering arm, the other end of the supporting frame is hinged with a right steering arm, the right steering arm is divided into a first right steering arm and a second right steering arm by a hinge point, the support frame, the second left steering arm, the tie rod and the second right steering arm form an unequal arm steering trapezoid. The utility model discloses compact structure, overall structure is narrower, and occupation space is less, satisfies the requirement that the narrow operation operating mode of wheeled milling machine turned to at the big steering angle.
Description
Technical Field
The utility model relates to a milling machine technical field, concretely relates to wheeled milling machine's arm steering mechanism that varies.
Background
The road surface milling machine is used as a special device for road maintenance, is widely applied to road maintenance engineering, and compared with a crawler-type milling machine with the milling operation width of 2 meters or more, the wheel-type milling machine with the milling operation width of 1 meter or less is more suitable for narrow milling operation working conditions such as urban roads, residential roads and the like due to the narrow width of a vehicle body, under the prior art, the front axle steering of the wheel-type milling machine has two structures, the first structure is a crank block mechanism, the second structure is an equal-arm trapezoid structure which is adopted by automobiles and partial engineering vehicles in many ways, and the two structures have the following defects:
1. the crank-slider mechanism is suitable for the condition that the whole vehicle is wide and the left and right steering angles are the same, and the crank-slider steering mechanism cannot meet the condition requirement of the milling operation of the wheel type milling machine because the wheel type milling machine works under the narrower working condition and the welt milling operation working condition and needs the perfect maneuverability and flexibility of the whole vehicle, and the vehicle body is narrow and the left and right steering angles are different.
2. The equal-arm trapezoidal mechanism is mostly used for the working conditions that the left and right steering angles of automobiles and partial engineering vehicles are the same, and the wheel type milling machine needs to finish special working conditions such as corner milling operation, welting milling operation and the like, so that the left and right steering angles of the wheel type milling machine are required to be different, and the equal-arm trapezoidal mechanism cannot meet the working condition requirement of the wheel type milling machine.
Therefore, it is imperative to develop a steering mechanism suitable for the working conditions of a wheel-type milling machine.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned not enough, provide a wheeled milling machine's not waiting arm steering mechanism, its compact structure is reasonable, and occupation space is less, and the operation is reliable, can realize that wheeled milling machine turns to the angle and turns to the different requirement of angle about and.
The purpose of the utility model is realized like this:
the utility model provides a wheeled milling machine's unequal arm steering mechanism, includes left steering arm, right steering arm, steering cylinder, support frame and length adjustable tie rod, the support frame is located between steering cylinder and the tie rod, the top of the articulated left steering arm of the hydro-cylinder pole of steering cylinder, the top of the articulated right steering arm of cylinder barrel of steering cylinder, the bottom of the articulated left steering arm of one end of tie rod, the bottom of the articulated right steering arm of the other end of tie rod, the articulated left steering arm of one end and hinge point of support frame divide into first left steering arm and second left steering arm with left steering arm, the articulated right steering arm of the other end and hinge point of support frame divide into first right steering arm and second right steering arm with right steering arm, support frame, second left steering arm, tie rod and second right steering arm form unequal arm and turn to the trapezoid.
Preferably, the second left steering arm is longer than the second right steering arm.
Preferably, the first right steering arm is longer than the first left steering arm.
Preferably, the tie rod comprises a connecting rod, a left-handed nut and a right-handed nut, and the connecting rod is formed by welding a rigid pipe and a connecting sleeve.
The utility model has the advantages that:
the utility model realizes the purpose of large steering angle steering and different left and right steering angles, has compact structure, narrower overall structure and smaller occupied space, and meets the requirement of large steering angle steering under the narrow working condition of the wheel type milling machine; compared with an equal-arm trapezoidal steering structure, the unequal-arm structure can meet the operation requirements of different left and right steering angles.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the utility model when turning right to the right limit position.
Fig. 3 is the force diagram of the left steering arm in right turn of the utility model.
Fig. 4 is an force diagram of the right steering arm in right turn of the present invention.
Fig. 5 is a schematic structural diagram of the utility model when turning left to the left limit position.
Fig. 6 is the force diagram of the left steering arm in left turn of the utility model.
Fig. 7 is an force diagram of the right steering arm in right turn according to the present invention.
Wherein: a left steering arm 1; a right steering arm 2; a steering cylinder 3; a support frame 4; a tie rod 5; a connecting rod 5.1; 5.2 of left-handed nut; 5.3 of right-handed nut; a first left pin 6; a second left pin 7; a third left pin 8; a first right pin 9; a second right pin 10; a third right pin 11; a first left steering arm 1.1; a second left steering arm 1.2; a first right steering arm 2.1; a second right steering arm 2.2.
Detailed Description
Referring to fig. 1-7, the utility model relates to an unequal arm steering mechanism of a wheel type milling machine, comprising a left steering arm 1, a right steering arm 2, a steering oil cylinder 3, a support frame 4 and a tie rod 5 with adjustable length, wherein the support frame 4 is arranged between the steering oil cylinder 3 and the tie rod 5, the left steering arm 1 is provided with a first left pin shaft 6 corresponding to the steering oil cylinder 3, the left steering arm 1 is provided with a second left pin shaft 7 corresponding to the support frame 4, the left steering arm 1 is provided with a third left pin shaft 8 corresponding to the tie rod 5, the right steering arm 2 is provided with a first right pin shaft 9 corresponding to the steering oil cylinder 3, the right steering arm 2 is provided with a second right pin shaft 10 corresponding to the support frame 4, the right steering arm 2 is provided with a third right pin shaft 11 corresponding to the tie rod 5, the top of the left steering arm 1 is hinged with an oil cylinder rod of the steering oil cylinder 3 through the first left pin shaft 6, the top of the right steering arm 2 is hinged with a cylinder barrel of the steering oil cylinder 3 through the first right pin shaft 9, one end of the tie rod 5 is hinged to the bottom of the left steering arm 1 through a rod end joint bearing and a third left pin shaft 8, the other end of the tie rod 5 is hinged to the bottom of the right steering arm 2 through a rod end joint bearing and a third right pin shaft 11, the left steering arm 1 is hinged to one end of the support frame 4 through a second left pin shaft 7 and an angular contact joint bearing, the left steering arm 1 is divided into a first left steering arm 1.1 and a second left steering arm 1.2 through a hinge point, the right steering arm 2 is hinged to the other end of the support frame 4 through a second right pin shaft 10 and an angular contact joint bearing, the right steering arm 2 is divided into a first right steering arm 2.1 and a second right steering arm 2.2 through a hinge point, and the support frame 4, the second left steering arm 1.2, the tie rod 5 and the second right steering arm 2.2 form an unequal arm steering trapezoid.
Because of the requirement of working conditions, the right steering deflection angle is larger than the left steering deflection angle, in order to meet the requirement of the Ackerman steering principle as far as possible and ensure that the tire does not slide at any steering position, the second left steering arm 1.2 is longer than the second right steering arm 2.2.
The utility model discloses the power supply comes from steering cylinder 3, turns to for satisfying the big corner about, first right side steering arm 2.1 is longer than first left side steering arm 1.1.
The tie rod 5 comprises a connecting rod 5.1, a left-handed nut 5.2 and a right-handed nut 5.3, and the connecting rod 5.1 is formed by welding a rigid pipe and a connecting sleeve. Adjust the length of drag link, it is convenient through levogyration nut 5.2 and dextrorotation nut 5.3 the assembly of the utility model discloses a.
When the oil cylinder rod of the steering oil cylinder extends out, the tire moves by overcoming the sliding friction resistance and turns to the right; when the oil cylinder rod of the steering oil cylinder retracts, the tire moves against the sliding friction resistance, and the mechanism turns left.
When the oil cylinder rod of the steering oil cylinder 3 extends, the left steering arm 1 is stressed as shown in figure 3, the left steering arm 1 is stressed by oil cylinder acting force F11, the sliding friction moment M of the tire and the force F21 given to the left steering arm by the tie rod 5 are stressed as shown in figure 4, the right steering arm 2 is stressed by oil cylinder acting force F12, the sliding friction moment M of the tire and the force F22 given to the right steering arm by the tie rod 5 are stressed, at the moment, the mechanism turns right, and figure 2 shows the right limit position of the steering mechanism.
When the oil cylinder rod of the steering oil cylinder 3 retracts, the left steering arm 1 is stressed as shown in fig. 6, the left steering arm 1 is stressed by oil cylinder acting force F11, the sliding friction moment M of the tire and the force F21 given to the left steering arm by the tie rod 5 are stressed as shown in fig. 7, the right steering arm 2 is stressed by oil cylinder acting force F12, the sliding friction moment M of the tire and the force F22 given to the right steering arm by the tie rod 5 are stressed, at the moment, the steering mechanism turns left, and fig. 5 shows the left limit position of the steering mechanism.
The steering mechanism realizes the steering of the mechanism at a left large angle and a right large angle through the extension and retraction of an oil cylinder rod of the steering oil cylinder 3, and the operation requirement that the right steering angle is larger than the left steering angle can be realized by the structure of unequal arms.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (4)
1. The utility model provides a wheeled milling machine's not uniform arm steering mechanism which characterized in that: comprises a left steering arm (1), a right steering arm (2), a steering oil cylinder (3), a support frame (4) and a tie rod (5) with adjustable length, wherein the support frame (4) is positioned between the steering oil cylinder (3) and the tie rod (5), an oil cylinder rod of the steering oil cylinder (3) is hinged with the top of the left steering arm (1), a cylinder barrel of the steering oil cylinder (3) is hinged with the top of the right steering arm (2), one end of the tie rod (5) is hinged with the bottom of the left steering arm (1), the other end of the tie rod (5) is hinged with the bottom of the right steering arm (2), one end of the support frame (4) is hinged with the left steering arm (1) and a hinge point divides the left steering arm (1) into a first left steering arm (1.1) and a second left steering arm (1.2), the other end of the support frame (4) is hinged with the right steering arm (2) and a hinge point divides the right steering arm (2) into a first right steering arm (2.1) and a second left steering arm (2.2), the support frame (4), the second left steering arm (1.2), the tie rod (5) and the second right steering arm (2.2) form an unequal arm steering trapezoid.
2. The unequal arm steering mechanism of the wheel milling machine according to claim 1, wherein: the second left steering arm (1.2) is longer than the second right steering arm (2.2).
3. The unequal arm steering mechanism of the wheel milling machine according to claim 1, wherein: the first right steering arm (2.1) is longer than the first left steering arm (1.1).
4. The unequal arm steering mechanism of the wheel milling machine according to claim 1, wherein: the tie rod (5) comprises a connecting rod (5.1), a left-handed nut (5.2) and a right-handed nut (5.3), and the connecting rod (5.1) is formed by welding a rigid pipe and a connecting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022859355.XU CN214271615U (en) | 2020-12-03 | 2020-12-03 | Unequal arm steering mechanism of wheel type milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022859355.XU CN214271615U (en) | 2020-12-03 | 2020-12-03 | Unequal arm steering mechanism of wheel type milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214271615U true CN214271615U (en) | 2021-09-24 |
Family
ID=77778623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022859355.XU Active CN214271615U (en) | 2020-12-03 | 2020-12-03 | Unequal arm steering mechanism of wheel type milling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214271615U (en) |
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2020
- 2020-12-03 CN CN202022859355.XU patent/CN214271615U/en active Active
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