CN214728322U - Forward and reverse driving device - Google Patents
Forward and reverse driving device Download PDFInfo
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- CN214728322U CN214728322U CN202120773512.7U CN202120773512U CN214728322U CN 214728322 U CN214728322 U CN 214728322U CN 202120773512 U CN202120773512 U CN 202120773512U CN 214728322 U CN214728322 U CN 214728322U
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Abstract
The utility model discloses a forward and reverse driving device, which comprises a driving rotary platform assembly, a seat and a hydraulic steering system; the driving rotary platform assembly is provided with a platform base and a rotary platform, and the rotary platform is arranged on the platform base through a plane bearing; still be equipped with rotary platform self-locking mechanism between platform base and the rotary platform, including the self-locking pin, the self-locking pin fixing base can be in the same place platform base and rotary platform are fixed. The hydraulic steering system mainly comprises a steering wheel, a hydraulic steering gear, an oil can, a constant flow pump, a steering change-over switch, a front axle assembly and a hydraulic steering oil cylinder. When the agricultural machine needs to adopt a forward driving mode or a reverse driving mode, the orientation of the driving rotary platform assembly is manually adjusted. After adjustment, the steering function of the steering wheel is controlled according to the driving direction, a steering change-over switch is installed on the driving rotary platform, and the steering control of forward or reverse driving is realized by changing the hydraulic flow direction of the hydraulic steering system through the steering change-over switch.
Description
Technical Field
The utility model relates to a device of driving in positive and negative direction belongs to agricultural machine technical field.
Background
The domestic utility model patent CN 208760745U discloses a modular multipurpose articulated wheel tractor, which adopts modular design to assemble each module to form tractors with various purposes, thereby satisfying various operation requirements, realizing functions of transportation, farming and the like and achieving the purpose of multipurpose. As a multipurpose tractor, various operation modes need to be undertaken, and in order to improve the working efficiency and the safety in the use process, the tractor needs to be provided with a rotary seat to realize a forward and reverse driving mode.
Disclosure of Invention
The utility model aims to solve the technical problem that a device is driven to positive reverse is provided for install and realize on agricultural machine that the seat of driving the direction is rotatory with positive reverse driving and along with driving.
The technical scheme of the utility model as follows: a forward and reverse driving device comprises a driving rotary platform assembly, a driving platform, a seat and a hydraulic steering system, wherein the seat is fixed on the driving rotary platform assembly; the driving rotary platform assembly is provided with a platform base and a rotary platform, a plane bearing is arranged between the platform base and the rotary platform, and the rotary platform is arranged on the platform base through the plane bearing; a rotary platform self-locking mechanism is further arranged between the platform base and the rotary platform, the rotary platform self-locking mechanism comprises a self-locking pin and a self-locking pin fixing seat, one end of the self-locking pin fixing seat is fixed on the platform base through a bolt, the other end of the self-locking pin fixing seat is provided with an upward protruding portion, and a spring and a self-locking pin are arranged in the protruding portion; the part of the rotating platform corresponding to the self-locking pin is provided with a first self-locking pin fixing hole, and a second self-locking pin fixing hole is arranged on the rotating platform and horizontally rotates 180 degrees relative to the first self-locking pin fixing hole. The spring is a compression spring. The driving platform and the seat are fixedly connected and fixed in front of and behind the rotating platform respectively and rotate along with the rotating platform.
The hydraulic steering system is arranged on the driving platform and mainly comprises a steering wheel, a hydraulic steering gear, an oil can, a constant flow pump, a steering change-over switch, a front axle assembly, a hydraulic steering oil cylinder and a hinge assembly; the hydraulic steering oil cylinder is arranged on one side of the front axle assembly, one end of the hydraulic steering oil cylinder is fixed on the front axle assembly, and the push rod at the other end of the hydraulic steering oil cylinder is connected with the hinge assembly; the steering wheel is connected with the hydraulic steering gear, a hydraulic steering gear control port T of the hydraulic steering gear is connected with an oil return port T of an oil can through a hydraulic pipe, an oil outlet F of the oil can is connected with a constant flow pump control port F through a hydraulic pipe, the constant flow pump control port P is connected with a hydraulic steering gear control port P through a hydraulic pipe, the hydraulic steering gear control port A is connected with an electromagnetic steering valve control port A of an electromagnetic steering valve through a hydraulic pipe, the hydraulic steering gear control port B is connected with an electromagnetic steering valve control port B through a hydraulic pipe, an electromagnetic steering valve control port D of the electromagnetic steering valve is connected with the hydraulic steering cylinder control port A through a hydraulic pipe, the electromagnetic steering valve control port C is connected with the hydraulic steering cylinder control port B through a hydraulic pipe, and the electromagnetic steering valve is connected with a steering changeover switch through a hydraulic pipe.
Adopt above-mentioned measure the utility model discloses, when agricultural machinery such as tractor need adopt forward or reverse driving mode, the orientation of rotary platform assembly is driven in manual adjustment, adjusts into forward or reverse. After adjustment, the steering wheel is required to be controlled according to the driving direction to achieve the steering function, therefore, a steering change-over switch is installed on the driving rotating platform, and the hydraulic flow direction of the hydraulic steering system is changed according to the requirement through the steering change-over switch to achieve steering control of forward driving or reverse driving of the tractor.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2A;
fig. 4 is a schematic structural diagram of the hydraulic steering system of the present invention.
Description of reference numerals: the automatic steering device comprises a driving platform 1, a seat 2, a platform base 3, a rotary platform 4, a supporting plate 5, a platform base screw hole 6, a front axle assembly 6, a plane bearing 7, a self-locking pin 8, a self-locking pin fixing seat 9, a spring 10, a first self-locking pin fixing hole 11, a second self-locking pin fixing hole 12, a steering wheel 13, a hydraulic steering gear 14, an oil can 15, a constant flow pump 16, a steering changeover switch 17, an electromagnetic reversing valve 18, a hydraulic steering oil cylinder 19 and a hinge assembly 20.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-3, a device for forward and reverse driving comprises a driving rotary platform assembly, a driving platform 1, a seat 2 and a hydraulic steering system; the driving rotating platform assembly is provided with a platform base 3 and a rotating platform 4, the bottom of the platform base 3 is provided with a supporting plate 5 which is provided with a platform base screw hole 6 and can be fixed on corresponding agricultural machinery through bolts, and a cylinder 6 is fixed on the supporting plate 5; be equipped with flat bearing 7 between platform base 3 and rotary platform 4, rotary platform 4 passes through flat bearing 7 to be installed on platform base 3, and rotary platform 4 can be rotatory round platform base 3 center. Still be equipped with rotary platform self-locking mechanism between platform base 3 and rotary platform 4, rotary platform self-locking mechanism includes self-locking pin 8 and self-locking pin fixing base 9, and self-locking pin fixing base 9 one end is passed through the bolt fastening on platform base 3, and the other end is provided with the bellying that makes progress, and the bellying is located rotary platform 4 top, and the inside cavity of bellying is provided with spring 10, spring 10 is compression spring, and self-locking pin 8 passes in spring 10 inserts the bellying, and rotary platform 4 corresponds the position of self-locking pin 8 and has first self-locking pin fixed orifices 11, and the position of the relative first self-locking pin fixed orifices 11 horizontal rotation 180 on rotary platform 4 is provided with second self-locking pin fixed orifices 12. Be provided with rotary platform screw on rotary platform 4's the four corners, can link driving platform 1 and seat 2 through bolt live bolt, driving platform 1 is located rotary platform 4 the place ahead, and seat 2 is located rotary platform 4 rear.
As shown in fig. 1-2 and 4, the hydraulic steering system is mounted on a driving platform 1, and mainly includes a steering wheel 13, a hydraulic steering gear 14, an oil can 15, a constant flow pump 16, a steering switch 17, a front axle assembly 6, a hydraulic steering cylinder 19, and a hinge assembly 20; the hydraulic steering oil cylinder 19 is arranged on one side of the front axle assembly, one end of the hydraulic steering oil cylinder is fixed on the front axle assembly 6, and the push rod at the other end of the hydraulic steering oil cylinder is connected with the hinge assembly; the steering wheel 13 is connected with a hydraulic steering gear 14, a control port T of the hydraulic steering gear 14 is connected with an oil return port T of an oil can 15 through a hydraulic pipe, an oil outlet F of the oil can 15 is connected with a control port F of a constant flow pump 16 through a hydraulic pipe, the control port P of the constant flow pump 16 is connected with a control port P of the hydraulic steering gear 14 through a hydraulic pipe, the control port A of the hydraulic steering gear 14 is connected with a control port A of an electromagnetic reversing valve 18 through a hydraulic pipe, the control port B of the hydraulic steering gear 14 is connected with a control port B of an electromagnetic reversing valve 18 through a hydraulic pipe, the control port D of the electromagnetic reversing valve 18 is connected with a control port A of the hydraulic steering cylinder 19 through a hydraulic pipe, the control port C of the electromagnetic reversing valve 18 is connected with a control port B of the hydraulic steering cylinder 19 through a hydraulic pipe, and the electromagnetic reversing valve 18 is connected with a steering switch 17 through a hydraulic pipe.
The utility model discloses an operating condition:
and (3) changing the driving direction: when the automobile is driven in the forward direction, the self-locking pin 8 is pressed by the spring 10 and downwards inserted into the first self-locking pin fixing hole 11 of the rotary platform 4 to fix the rotary platform 4, so that the relative displacement between the rotary platform 4 and the platform base 3 is avoided; when the driving direction needs to be switched in a reverse driving mode, the self-locking pin 8 is pulled upwards, the self-locking pin 8 is separated from the first self-locking pin fixing hole 11, the rotating platform 4 rotates 180 degrees around the platform base 3, the self-locking pin 8 is loosened, the self-locking pin 8 is pressed by the spring 10 and is downwards inserted into the second self-locking pin fixing hole 12, the driving direction is switched, the driving platform 1 and the seat 2 rotate along with the rotating platform 4, and when the driving direction needs to be switched again, the driving direction can be returned along the original path in the same method.
The working principle of the electromagnetic directional valve is as follows: firstly, in a forward driving state, an electromagnetic coil of the electromagnetic directional valve 18 is not electrified, a control port A of the electromagnetic directional valve 18 is communicated with a control port C of the electromagnetic directional valve 18, and a control port B of the electromagnetic directional valve 18 is communicated with a control port D of the electromagnetic directional valve 18; secondly, when the vehicle is in a reverse driving state, the electromagnetic coil of the electromagnetic directional valve 18 is electrified through the steering switch 17, the control port A of the electromagnetic directional valve 18 is communicated with the control port D of the electromagnetic directional valve 18, and the control port B of the electromagnetic directional valve 18 is communicated with the control port C of the electromagnetic directional valve 18.
The working principle of the oil cylinder is as follows: the hydraulic steering oil cylinder 19 controls the port A to feed oil, the hydraulic steering oil cylinder 19 push rod extends out, the hydraulic steering oil cylinder 19 controls the port B to feed oil, the hydraulic steering oil cylinder 19 push rod retracts, and the steering function is realized through the extension and retraction of the hydraulic steering oil cylinder 19 push rod.
The steering wheel 13 is able to turn no matter whether the rotating platform is in forward or reverse direction, without affecting the hydraulic steering system. Hydraulic oil enters a control port F of a constant flow pump 16 from an oil outlet F of an oil can 15, enters a control port P of a hydraulic steering gear 14 from the control port P of the constant flow pump 16, and then has three states: firstly, when the steering wheel 13 is not moved, a control port P of the hydraulic steering gear 14 is communicated with a control port T of the hydraulic steering gear 14, and a control port A of the hydraulic steering gear 14 is not communicated with a control port B of the hydraulic steering gear 14; secondly, when the steering wheel 13 turns left, the control port P of the hydraulic steering gear 14 is communicated with the control port A of the hydraulic steering gear 14, and the control port T of the hydraulic steering gear 14 is communicated with the control port B of the hydraulic steering gear 14; third, when the steering wheel 13 is turned right, the control port P of the hydraulic steering gear 14 and the control port B of the hydraulic steering gear 14 are communicated, and the control port T of the hydraulic steering gear 14 and the control port a of the hydraulic steering gear 14 are communicated.
Forward driving state: when the left turn of a machine provided with the device is controlled, hydraulic oil enters a control port F of a constant flow pump 16 from an oil outlet F of an oil can 15, enters a control port P of a hydraulic steering gear 14 from the control port P of the constant flow pump 16, passes through a control port A of the hydraulic steering gear 14, enters an electromagnetic reversing valve 18 from a control port A of the electromagnetic reversing valve 18, is not electrified at the moment, enters a control port B of a hydraulic steering oil cylinder 19 from a control port C of the electromagnetic reversing valve 18, and a push rod of the hydraulic steering oil cylinder 19 is withdrawn to realize left turn; the hydraulic oil flows back from the control port A of the hydraulic steering oil cylinder 19, enters the electromagnetic steering valve 18 through the control port D of the electromagnetic steering valve 18, enters the hydraulic steering gear 14 from the control port B of the electromagnetic steering valve 18 through the control port B of the hydraulic steering gear 14, and returns to the oil pot 15 from the control port T of the hydraulic steering gear 14 through the oil return port T of the oil pot 15.
When the machine provided with the device is controlled to turn right, hydraulic oil enters a control port F of a constant flow pump 16 from an oil outlet F of an oil can 15, enters a control port P of a hydraulic steering gear 14 from the control port P of the constant flow pump 16, passes through a control port B of the hydraulic steering gear 14, enters an electromagnetic reversing valve 18 from a control port B of the electromagnetic reversing valve 18, is not electrified at the moment, enters a control port A of a hydraulic steering oil cylinder 19 from a control port D of the electromagnetic reversing valve 18, and extends out of a push rod of the hydraulic steering oil cylinder 19 to realize right turning; the hydraulic oil flows back from the control port B of the hydraulic steering oil cylinder 19, enters the electromagnetic directional valve 18 through the control port C of the electromagnetic directional valve 18, enters the hydraulic steering gear 14 from the control port A of the electromagnetic directional valve 18 through the control port A of the hydraulic steering gear 14, and returns to the oil pot 15 from the control port T of the hydraulic steering gear 14 through the oil return port T of the oil pot 15.
A reverse driving state: when the left turn of a machine provided with the device is controlled, hydraulic oil enters a control port F of a constant flow pump 16 from an oil outlet F of an oil can 15, enters a control port P of a hydraulic steering gear 14 from the control port P of the constant flow pump 16, passes through a control port A of the hydraulic steering gear 14, enters an electromagnetic reversing valve 18 from a control port A of the electromagnetic reversing valve 18, is electrified at the moment, enters a control port A of a hydraulic steering oil cylinder 19 from a control port D of the electromagnetic reversing valve 18, and extends out of a push rod of the hydraulic steering oil cylinder 19 to realize left turn; the hydraulic oil flows back from the control port B of the hydraulic steering oil cylinder 19, enters the electromagnetic directional valve 18 through the control port C of the electromagnetic directional valve 18, enters the hydraulic steering gear 14 from the control port B of the electromagnetic directional valve 18 through the control port B of the hydraulic steering gear 14, and returns to the oil pot 15 from the control port T of the hydraulic steering gear 14 through the oil return port T of the oil pot 15.
When the machine provided with the device is controlled to turn right, hydraulic oil enters a control port F of a constant flow pump 16 from an oil outlet F of an oil can 15, enters a control port P of a hydraulic steering gear 14 from the control port P of the constant flow pump 16, passes through a control port B of the hydraulic steering gear 14, enters an electromagnetic reversing valve 18 from a control port B of the electromagnetic reversing valve 18, is electrified at the moment, enters a control port B of a hydraulic steering oil cylinder 19 from a control port C of the electromagnetic reversing valve 18, and a push rod of the hydraulic steering oil cylinder 19 is withdrawn to realize right turning; the hydraulic oil flows back from the control port A of the hydraulic steering oil cylinder 19, enters the electromagnetic steering valve 18 through the control port D of the electromagnetic steering valve 18, enters the hydraulic steering gear 14 from the control port A of the electromagnetic steering valve 18 through the control port A of the hydraulic steering gear 14, and returns to the oil pot 15 from the control port T of the hydraulic steering gear 14 through the oil return port T of the oil pot 15.
Claims (3)
1. A forward and reverse driving device comprises a driving rotary platform assembly, a driving platform (1), a seat (2) and a hydraulic steering system; the method is characterized in that: the driving rotating platform assembly is provided with a platform base (3) and a rotating platform (4), a plane bearing (7) is arranged between the platform base (3) and the rotating platform (4), and the rotating platform (4) is installed on the platform base (3) through the plane bearing (7); a rotary platform self-locking mechanism is further arranged between the platform base (3) and the rotary platform (4), the rotary platform self-locking mechanism comprises a self-locking pin (8) and a self-locking pin fixing seat (9), one end of the self-locking pin fixing seat (9) is fixed on the platform base (3) through a bolt, the other end of the self-locking pin fixing seat is provided with an upward protruding portion, and a spring (10) and the self-locking pin (8) are arranged in the protruding portion; a first self-locking pin fixing hole (11) is formed in the part, corresponding to the self-locking pin (8), of the rotating platform (4); a second self-locking pin fixing hole (12) is arranged on the rotary platform (4) at a position horizontally rotated 180 degrees relative to the first self-locking pin fixing hole (11).
2. A device for forward and reverse steering as claimed in claim 1, wherein: the spring (10) is a compression spring.
3. A device for forward and reverse steering as claimed in claim 1 or 2, wherein: the hydraulic steering system is arranged on a driving platform (1) and mainly comprises a steering wheel (13), a hydraulic steering gear (14), an oil can (15), a constant flow pump (16), a steering change-over switch (17), a front axle assembly (6), a hydraulic steering oil cylinder (19) and a hinge assembly (20); the hydraulic steering oil cylinder (19) is arranged on one side of the front axle assembly (6), one end of the hydraulic steering oil cylinder is fixed on the front axle assembly (6), and a push rod at the other end of the hydraulic steering oil cylinder is connected with the hinge assembly (20); the steering wheel (13) is connected with a hydraulic steering gear (14), a control port T of the hydraulic steering gear (14) is connected with an oil return port T of an oil can (15) through a hydraulic pipe, an oil outlet F of the oil can (15) is connected with a control port F of a constant flow pump (16) through a hydraulic pipe, the control port P of the constant flow pump (16) is connected with a control port P of the hydraulic steering gear (14) through a hydraulic pipe, the control port A of the hydraulic steering gear (14) is connected with a control port A of an electromagnetic reversing valve (18) through a hydraulic pipe, the control port B of the hydraulic steering gear (14) is connected with a control port B of an electromagnetic reversing valve (18) through a hydraulic pipe, the control port D of the electromagnetic reversing valve (18) is connected with the control port A of the hydraulic steering cylinder (19) through a hydraulic pipe, the control port C of the electromagnetic reversing valve (18) is connected with the control port B of the hydraulic steering cylinder (19) through a hydraulic pipe, and the electromagnetic reversing valve (18) is connected with a steering switch (17) through a hydraulic pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120773512.7U CN214728322U (en) | 2021-04-15 | 2021-04-15 | Forward and reverse driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120773512.7U CN214728322U (en) | 2021-04-15 | 2021-04-15 | Forward and reverse driving device |
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| Publication Number | Publication Date |
|---|---|
| CN214728322U true CN214728322U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120773512.7U Active CN214728322U (en) | 2021-04-15 | 2021-04-15 | Forward and reverse driving device |
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| CN (1) | CN214728322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117767175A (en) * | 2024-02-22 | 2024-03-26 | 国网山东省电力公司昌邑市供电公司 | multifunctional small cable operation vehicle |
-
2021
- 2021-04-15 CN CN202120773512.7U patent/CN214728322U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117767175A (en) * | 2024-02-22 | 2024-03-26 | 国网山东省电力公司昌邑市供电公司 | multifunctional small cable operation vehicle |
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