CN218736008U - Steering wheel type zero-turning mechanism - Google Patents

Abstract

The utility model discloses a zero turning mechanism of steering wheel formula belongs to the lawn mower field, a zero turning mechanism of steering wheel formula, including the steering wheel, the bottom of steering wheel is installed and is gone up the axis of rotation, the bottom of going up the axis of rotation rotates through a rotating part and is connected with lower axis of rotation, the outside of lower axis of rotation and the position department that is close to the bottom are fixed with first gear, the bottom of lower axis of rotation is fixed with the second gear, front wheel control mechanism is installed in the outside of second gear, coordinated control mechanism is installed in the outside of first gear, front wheel control mechanism is including the second sprocket, the chain, first sprocket, connecting rod combination and steering gear dish, the outside meshing of second gear is connected with steering gear dish, the both sides that turn to the fluted disc are all rotated and are connected with the connecting rod combination. The device can realize that zero turning is reserved in use, single-hand operation can be realized, overturning is avoided, and the safety is very high.

Description

Steering wheel type zero-turning mechanism

Technical Field

The utility model relates to a lawn mower field, more specifically say, relate to a steering wheel type zero turn mechanism.

Background

At present, domestic commercial lawn mowers are divided into two categories, namely tractor type lawn mowers (steering wheels and engines are arranged in front) and rod type zero-turning lawn mowers. The tractor type lawn mower has steering wheel to control the rotation angle of the front wheel, and through the built-in differential mechanism of the back driving hydraulic bridge, the two back wheels produce differential speed to realize turning. The structure has the advantages that the direction can be controlled by one hand when the direction is controlled, and the structure is similar to the operation mode of automobile steering, is favored by operators, and has the defects that zero turning cannot be realized, and a certain turning radius exists when the steering is carried out.

The rod type zero turning lawn vehicle has two control rods to control two back driving hydraulic bridges separately, and the front wheels as guide wheels capable of rotating freely. The structure has the advantages that the operation is simple, zero turning can be realized, the steering can be flexibly performed in narrow zones, and the defect that two hands are required to operate during the operation is overcome;

therefore, it is necessary to provide a drive control structure capable of realizing zero-turn while being operated by one hand.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a steering wheel type zero turn mechanism, it can realize that in use has both kept zero turn, can accomplish one-hand operation again to avoid the rollover, the security is very high.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The steering wheel type zero-turning mechanism comprises a steering wheel, wherein an upper rotating shaft is mounted at the bottom of the steering wheel, a lower rotating shaft is rotatably connected to the bottom of the upper rotating shaft through a rotating piece, a first gear is fixed at a position, close to the bottom end, outside the lower rotating shaft, and a second gear is fixed at the bottom of the lower rotating shaft;

the front wheel control mechanism is installed in the outside of second gear, the coordinated control mechanism is installed in the outside of first gear.

Furthermore, the front wheel control mechanism comprises a second chain wheel, a chain, a first chain wheel, a connecting rod combination and a steering fluted disc;

the outside meshing of second gear is connected with and turns to the fluted disc, the both sides that turn to the fluted disc are all rotated and are connected with the connecting rod combination, two one side that the connecting rod combination was kept away from each other all rotates and is connected with first sprocket, the outside meshing of first sprocket is connected with the chain, just the inboard of chain is kept away from one side meshing of first sprocket is connected with the second sprocket, the bottom of second sprocket rotates and is connected with the front wheel support.

Further, the rotating member is a universal joint.

Furthermore, the linkage control mechanism comprises a transmission gear, a first bevel gear, a second bevel gear and a rotating swing arm which are welded together;

the outer side of the second gear is connected with a transmission gear in a meshed mode, a first bevel gear is fixed at the center of the inner side of the transmission gear, two sides of the top of the first bevel gear are connected with second bevel gears in a meshed mode, and one ends, far away from each other, of the two second bevel gears are fixed with rotating swing arm welding joints.

Furthermore, rear wheel drive control mechanisms are mounted on the welding parts of the two rotary swing arms;

each rear wheel drive control mechanism is provided with a foot control pedal welded part, a first connecting rod, a rotating shaft welded part and a second connecting rod;

two it all is fixed with first connecting rod to rotate the swing arm welding, the one end of first connecting rod is rotated and is connected with foot control footboard seam, the other end of first connecting rod rotates and is connected with the pivot seam, the pivot seam is kept away from the one end of first connecting rod rotates and is connected with the second connecting rod.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) The scheme realizes that zero turning is reserved in use and single-hand operation can be realized.

(2) This scheme has realized advancing the in-process that backs at high speed, can force when rotating the steering wheel to slow down the both sides drive wheel, avoids the car turnover, and the security is very high.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic structural view of the steering gear, the second gear and the chain of the present invention;

FIG. 3 is a schematic view of the structure of the rotary swing arm seam, the rotary shaft seam and the foot control pedal seam of the present invention;

fig. 4 is a schematic structural view between the transmission gear, the first bevel gear and the second bevel gear of the present invention;

fig. 5 is a schematic structural view of the present invention between the upper rotating shaft, the lower rotating shaft and the second gear;

fig. 6 is a schematic structural view between the chain, the guide bolt and the adjusting nut of the present invention.

The reference numbers in the figures illustrate:

1. a steering wheel; 2. rotating the rotating shaft; 3. a universal coupling; 4. rotating the shaft downwards; 5. a first gear; 6. a second gear; 7. a steering fluted disc; 8. a connecting rod combination; 9. a first sprocket; 10. A chain; 11. a second sprocket; 12. adjusting the nut; 13. a guide bolt; 14. a guide slider; 15. welding the foot control pedal; 16. a first link; 17. welding the rotating shaft; 18. a second link; 19. a transmission gear; 20. a first bevel gear; 21. a second bevel gear; 22. and welding the rotating swing arm.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

Example 1:

referring to fig. 1-6, a steering wheel type zero-turn mechanism includes a steering wheel 1, an upper rotating shaft 2 is mounted at the bottom of the steering wheel 1, a lower rotating shaft 4 is rotatably connected to the bottom of the upper rotating shaft 2 through a rotating member, a first gear 5 is fixed at a position outside the lower rotating shaft 4 and close to the bottom end, and a second gear 6 is fixed at the bottom of the lower rotating shaft 4;

a front wheel control mechanism is arranged on the outer side of the second gear 6, and a linkage control mechanism is arranged on the outer side of the first gear 5.

Referring to fig. 2, the front wheel control mechanism includes a second sprocket 11, a chain 10, a first sprocket 9, a connecting rod assembly 8 and a steering gear 7;

the outside meshing of second gear 6 is connected with and turns to fluted disc 7, the both sides that turn to fluted disc 7 are all rotated and are connected with connecting rod combination 8, two connecting rod combination 8 are all rotated and are connected with first sprocket 9 in the one side of keeping away from each other, the outside meshing of first sprocket 9 is connected with chain 10, and the inboard one side meshing of keeping away from first sprocket 9 of chain 10 is connected with second sprocket 11, the bottom of second sprocket 11 is rotated and is connected with the front wheel support, be connected through second gear 6 and the meshing that turns to between the fluted disc 7, make second gear 6 can drive and turn to fluted disc 7 and rotate, turn to fluted disc 7 and rotate the connecting rod combination 8 of the in-process through the left and right sides, stimulate respectively and promote the first sprocket 9 of both sides, the first sprocket 9 of both sides drives the second sprocket 11 of both sides respectively through the chain drive, thereby realize turning to of front wheel.

Referring to fig. 1 and 5, the rotating member is a universal joint 3 so that the steering wheel 1 and the upper rotating shaft 2 can be adjusted according to the user's habit of use, thereby making the use more comfortable.

Referring to fig. 3 and 4, the linkage control mechanism includes a transmission gear 19, a first bevel gear 20, a second bevel gear 21 and a rotating swing arm seam 22;

the outside meshing of second gear 6 is connected with drive gear 19, the inboard central point of drive gear 19 puts the department and is fixed with first bevel gear 20, the both sides at first bevel gear 20 top all meshing are connected with second bevel gear 21, the one end that two second bevel gears 21 kept away from each other all is fixed with rotation swing arm seam 22, when drive gear 19 rotates, drive first bevel gear 20 and rotate, and then through the meshing connection between first bevel gear 20 and two second bevel gears 21, can drive second bevel gear 21 and rotate, and then drive two rotation swing arm seams 22 through two second bevel gears 21 and rotate, because of the rotation direction between two second bevel gears 21 is opposite, and then make two rotation swing arm seams 22's rotation direction also opposite.

Referring to fig. 3, a rear wheel drive control mechanism is mounted on each of the two rotating swing arm joints 22;

each rear wheel drive control mechanism is provided with a foot control pedal seam 15, a first connecting rod 16, a rotating shaft seam 17 and a second connecting rod 18;

all be fixed with first connecting rod 16 on two rotation swing arm seam 22, the one end of first connecting rod 16 is rotated and is connected with foot control footboard seam 15, the other end of first connecting rod 16 is rotated and is connected with pivot seam 17, the one end that first connecting rod 16 was kept away from to pivot seam 17 is rotated and is connected with second connecting rod 18, when rotating steering wheel 1, two rotate swing arm seam 22 and swing towards the place ahead and rear respectively, both all drive the first connecting rod 16 of both sides and rotate, the rotary arm length when adjusting first connecting rod 16 and foot control footboard seam 15 and being connected, when changing rotary arm length, first connecting rod 16 drives pivot seam 17 and swings, the change of back wheel speed.

The working principle is as follows: when the steering wheel 1 is turned, the first gear 5 and the second gear 6 are turned in the same direction as the steering wheel 1. The second gear 6 can drive the steering fluted disc 7 to rotate through the meshed connection between the second gear 6 and the steering fluted disc 7, the steering fluted disc 7 respectively pulls and pushes the first chain wheels 9 at two sides through the connecting rod assemblies 8 at the left side and the right side in the rotating process, and the first chain wheels 9 at two sides respectively drive the second chain wheels 11 at two sides through chain transmission, so that the steering of the front wheel is realized;

in the same time, the first gear 5 is meshed with the transmission gear 19, so that the first gear 5 drives the transmission gear 19 to rotate, the transmission gear 19 drives the first bevel gear 20 to rotate in the same direction, and the first bevel gear 20 drives the second bevel gear 21 to rotate through the meshed connection between the first bevel gear 20 and the second bevel gear 21, and further, the two rotating swing arm joints 22 driven by the two second bevel gears 21 swing in opposite directions through the rotating direction idea of the second bevel gears 21 on the two sides;

when the lawn mower is stopped in place, the rear wheels are static at the moment, when the steering wheel 1 is turned left, the rotating swing arm welding seam 22 on the right side swings forwards, the rotating swing arm welding seam 22 on the left side swings backwards, the rotating swing arm welding seam and the rotating swing arm welding seam drive the first connecting rods 16 on the two sides to rotate, and the length of the rotating arm when the first connecting rod 16 is connected with the foot control pedal welding seam 15 is adjusted. When the length of the swing arm is changed, the rotating shaft welding joint 17 is driven to swing, and the rear wheel swings;

when the lawn mower turns the steering wheel 1 left under the forward turning state, the rotating swing arm seam 22 on the right side swings forward, the rotating swing arm seam 22 on the left side swings backward, both the rotating swing arm seam 22 and the rotating swing arm seam drive the first connecting rods 16 on the two sides to rotate, the length of a rotating arm when the first connecting rod 16 is connected with the foot control pedal seam 15 is adjusted, when the length of the rotating arm is changed, the first connecting rod 16 drives the rotating shaft seam 17 to swing, the speed of a rear wheel is changed, the speed reduction of a left driving wheel is greater than that of a right driving wheel, when the steering wheel 1 turns to the limit position, the left driving wheel reverses, and the right driving wheel rotates forward to realize zero turning;

when the lawn mower turns the steering wheel 1 leftwards under the backward rotation state, the rotating swing arm seam 22 on the right side swings forwards, the rotating swing arm seam 22 on the left side swings backwards, the rotating swing arm seam 22 on the left side drives the first connecting rods 16 on the two sides to rotate, the length of a rotating arm when the first connecting rod 16 is connected with the foot control pedal seam 15 is adjusted, when the length of the rotating arm is changed, the first connecting rod 16 drives the rotating shaft seam 17 to swing, the speed of a rear wheel is changed, the speed of a left driving wheel is increased to be larger than that of a right driving wheel, when the steering wheel 1 turns to a limit position, the left driving wheel rotates forwards, the right driving wheel rotates backwards, and zero turning is achieved.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims (5)

1. A steering wheel type zero-turn mechanism comprises a steering wheel (1), and is characterized in that: an upper rotating shaft (2) is mounted at the bottom of the steering wheel (1), a lower rotating shaft (4) is rotatably connected to the bottom of the upper rotating shaft (2) through a rotating piece, a first gear (5) is fixed at the position, close to the bottom end, of the outer side of the lower rotating shaft (4), and a second gear (6) is fixed at the bottom of the lower rotating shaft (4);

a front wheel control mechanism is installed on the outer side of the second gear (6), and a linkage control mechanism is installed on the outer side of the first gear (5).

2. A steering wheel type zero-turn mechanism according to claim 1, characterized in that: the front wheel control mechanism comprises a second chain wheel (11), a chain (10), a first chain wheel (9), a connecting rod combination (8) and a steering fluted disc (7);

the outside meshing of second gear (6) is connected with and turns to fluted disc (7), the both sides that turn to fluted disc (7) are all rotated and are connected with connecting rod combination (8), two one side that connecting rod combination (8) kept away from each other all rotates and is connected with first sprocket (9), the outside meshing of first sprocket (9) is connected with chain (10), just the inboard of chain (10) is kept away from one side meshing of first sprocket (9) is connected with second sprocket (11), the bottom rotation of second sprocket (11) is connected with the front wheel support.

3. A steering wheel zero turn mechanism according to claim 1, wherein: the rotating part is a universal coupling (3).

4. A steering wheel zero turn mechanism according to claim 1, wherein: the linkage control mechanism comprises a transmission gear (19), a first bevel gear (20), a second bevel gear (21) and a rotating swing arm welding joint (22);

the outer side of the second gear (6) is connected with a transmission gear (19) in a meshing mode, a first bevel gear (20) is fixed at the center position of the inner side of the transmission gear (19), two sides of the top of the first bevel gear (20) are connected with second bevel gears (21) in a meshing mode, and one ends, far away from each other, of the two second bevel gears (21) are fixed with rotating swing arm welding joints (22).

5. The steering wheel type zero-turn mechanism according to claim 4, wherein: the two rotating swing arm welding joints (22) are respectively provided with a rear wheel drive control mechanism;

each rear wheel drive control mechanism is a foot control pedal welded joint (15), a first connecting rod (16), a rotating shaft welded joint (17) and a second connecting rod (18);

two all be fixed with first connecting rod (16) on rotating swing arm seam (22), the one end of first connecting rod (16) is rotated and is connected with foot control footboard seam (15), the other end of first connecting rod (16) is rotated and is connected with pivot seam (17), pivot seam (17) are kept away from the one end of first connecting rod (16) is rotated and is connected with second connecting rod (18).

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