CN216415027U - External control device and tractor - Google Patents

Abstract

The utility model discloses an external controlling means and tractor, external controlling means are used for controlling the lift system that hangs of tractor from the outside of driver's cabin, and external controlling means includes: the two ends of the push-pull flexible shaft are respectively an outer end and an inner end, the inner end is connected with a control valve of the suspension lifting system, and the outer end is positioned outside the cab; the gear transmission structure is arranged outside the cab and connected with the outer end, and the gear transmission structure can drive the push-pull flexible shaft to move so as to push and pull the control valve; and the rotary damping structure is connected with the gear transmission structure. The utility model discloses an external controlling means and tractor drives the push-and-pull flexible axle through control gear drive structure and removes, makes push-and-pull flexible axle push-and-pull control valve, utilizes the frictional force that rotatory damping structure provided to make the gear drive structure rotate all can static after the arbitrary angle, and then makes the push-and-pull flexible axle and hang the hoist system remain stable to the outside of realization from the driver's cabin is to the control of hanging hoist system.

Description

External control device and tractor

Technical Field

The utility model relates to a tractor equipment technical field especially relates to an external controlling means and tractor.

Background

When the tractor is used for a traction device of agricultural machinery, the tractor provides traction force and operation control for farm implements or other accessories hung on the tractor, in order to lift or put down the farm implements hung behind the tractor, a hanging and lifting system is arranged behind the tractor, the lifting or putting down of the farm implements is achieved by lifting or falling a suspension, and the suspension is lifted and maintained at various positions by using hydraulic pressure. The suspension lifting system consists of a hydraulic pump, a control valve, a lifting oil cylinder, a suspension and the like. At present, the suspension lifting system is controlled in a cab through an operator, and the suspension lifting system cannot be controlled outside the cab, so that the lifting condition of a suspension can be better observed while the suspension is controlled.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an external controlling means and tractor to solve the technical problem that can't carry out control to the lift system that hangs of tractor from the outside of driver's cabin at present.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides an external controlling means for the outside from the driver's cabin is controlled the lift system that hangs of tractor, external controlling means includes: the two ends of the push-pull flexible shaft are respectively an outer end and an inner end, the inner end is connected with a control valve of the suspension lifting system, and the outer end is positioned outside the cab; the gear transmission structure is arranged outside the cab and connected with the outer end, and can drive the push-pull flexible shaft to move so as to push and pull the control valve; and the rotary damping structure is connected with the gear transmission structure.

The utility model discloses an among the embodiment, gear drive structure includes rack and gear shaft, the rack is followed the axial of push-and-pull flexible axle with the outer end is connected, the gear shaft with rack toothing connects, the gear shaft can drive the rack is followed the axial displacement of push-and-pull flexible axle, at least one end of gear shaft with rotatory damping structure is connected.

The utility model discloses an among the embodiment, rotatory damping structure includes adapter sleeve and friction disc, the adapter sleeve is installed on the gear shaft, the adapter sleeve with the gear shaft rotates in step, the friction disc for the gear shaft is fixed to be set up, the terminal surface of adapter sleeve with the friction disc is laminated mutually.

The utility model discloses an among the embodiment, external controlling means still includes the guide rail piece, the guide rail piece for the rack is fixed to be set up, the guide rail piece is followed the axial of push-and-pull flexible axle with rack sliding fit.

The utility model discloses an among the embodiment, the one end of gear shaft is connected with twist grip.

The utility model discloses an among the embodiment, gear drive structure installs through the installation casing the outside of driver's cabin, gear drive structure installs in the installation casing, the one end of gear shaft stretch in outside the installation casing and with twist grip connects.

The utility model discloses an among the embodiment, install the flexible axle protective sheath on the installation casing, the outer end is passed the flexible axle protective sheath with in the installation casing rack connection.

The utility model discloses an among the embodiment, be equipped with first sign and second sign on the twist grip, first sign is used for the signal twist grip rotates along first direction and can make hang the hoist system and descend, the second sign is used for the signal twist grip rotates along the second direction and can make hang the hoist system and rise.

The utility model discloses an among the embodiment, the installation casing includes casing and apron, the casing has the opening, the apron lid in on the opening and through an at least spacer sleeve with the casing is connected, the spacer sleeve is followed the axial setting of gear shaft.

The utility model also provides a tractor, including above-mentioned external controlling means, the tractor still includes and hangs hoist system.

The utility model discloses a characteristics and advantage are:

the utility model discloses an external controlling means and tractor, the inner through with the push-and-pull flexible axle is connected with the control valve that hangs hoist system, the outer end of push-and-pull flexible axle is connected with the gear drive structure of the outside of driver's cabin, it removes to drive the push-and-pull flexible axle through control gear drive structure, make push-and-pull flexible axle push-and-pull control valve, and through being connected gear drive structure and rotary damping structure, the frictional force that utilizes the rotary damping structure to provide makes gear drive structure rotate all can stillness after the arbitrary angle, and then make push-and-pull flexible axle and hang hoist system remain stable, thereby realize the outside from the driver's cabin to the control of hanging hoist system.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the external control device of the present invention.

Fig. 2 is a schematic structural diagram of the external control device of the present invention.

Fig. 3 is an exploded view of the external control device of the present invention.

Fig. 4 is a transverse sectional view of the external control device of the present invention.

Fig. 5 is a longitudinal sectional view of the external control device of the present invention (omitting the limit boss).

In the figure:

100. an external controller; 1. pushing and pulling the flexible shaft; 11. an inner end; 12. an outer end; 13. connecting the end heads; 131. flat mouth clips; 132. a connecting rod; 2. a gear transmission structure; 21. a gear shaft; 211. a rotating shaft; 212. a gear; 22. a rack; 221. a limiting boss; 222. connecting holes; 23. a guide rail block; 231. a guide groove; 232. a limiting groove; 3. a rotational damping structure; 31. a friction plate; 32. connecting sleeves; 4. rotating the handle; 41. a first identifier; 42. a second identifier; 5. a flexible shaft protective sleeve; 6. a spacer sleeve; 7. installing a shell; 71. a housing; 711. an opening; 72. a cover plate; 8. mounting a plate; 200. suspending a hoisting system; 201. a control valve; 202. lifting the oil cylinder; 203. a suspension; 300. a rear wheel guard.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Implementation mode one

As shown in fig. 1 and 4, the utility model provides an external control device for the outside of following the driver's cabin is controlled the lift system 200 that hangs of tractor, and external control device includes: the two ends of the push-pull flexible shaft 1 are respectively an outer end 12 and an inner end 11, the inner end 11 is connected with a control valve 201 of the suspension lifting system 200, and the outer end 12 is positioned outside the cab; the gear transmission structure 2 is arranged outside the cab, the gear transmission structure 2 is connected with the outer end 12, and the gear transmission structure 2 can drive the push-pull flexible shaft 1 to move so as to push-pull the control valve 201; and the rotary damping structure 3 is connected with the gear transmission structure 2.

The utility model discloses an external controlling means and tractor, inner 11 through with push-and-pull flexible axle 1 is connected with the control valve 201 who hangs hoist system 200, outer end 12 of push-and-pull flexible axle 1 is connected with the outside gear drive structure 2 of driver's cabin, drive push-and-pull flexible axle 1 through control gear drive structure 2 and remove, make 1 push-and-pull control valve 201 of push-and-pull flexible axle, and through being connected gear drive structure 2 and rotary damping structure 3, utilize the frictional force that rotary damping structure 3 provided to make 2 rotations all can stills behind the arbitrary angle of gear drive structure, and then make push-and-pull flexible axle and hang hoist system remain stable, thereby realize the outside from the driver's cabin to the control of hanging hoist system 200.

Specifically, the push-pull flexible shaft 1 is a shaft which has small rigidity and elasticity and can be freely bent and driven and can be made of a steel wire rope. The valve rod of the control valve 201 of the suspension lifting system 200 is connected with the inner end 11 of the push-pull flexible shaft 1, and the push-pull valve rod moves through the push-pull flexible shaft 1, so that the hydraulic output of the control valve 201 is controlled, the stretching of the lifting oil cylinder 202 is controlled, and the lifting and the descending of the suspension 203 are realized. Utilize the utility model discloses an external controller 100, operating personnel can follow the outside of driver's cabin and observe the height of suspension 203, and then go up and down to suspension 203 according to the promotion condition of suspension 203 to it is suitable with the altitude mixture control of the agricultural implement that suspension 203 is connected.

As shown in fig. 3, 4 and 5, in the embodiment of the present invention, the gear transmission structure 2 includes a rack 22 and a gear shaft 21, the rack 22 is connected to the outer end 12 along the axial direction of the push-pull flexible shaft 1, the gear shaft 21 is meshed with the rack 22, and the gear shaft 21 can drive the rack 22 to move along the axial direction of the push-pull flexible shaft 1. The push-pull flexible shaft 1 can be driven to move by rotating the gear shaft 21.

Specifically, the outer end 12 of the push-pull flexible shaft 1 is connected with the rack 22 through a connecting end 13, one end of the connecting end 13 is provided with a flat mouth clamp 131, and the flat mouth clamp 131 clamps the outer end 12 of the push-pull flexible shaft 1 and is connected with the outer end 12 of the push-pull flexible shaft 1 through a screw. The other end of the connecting end 13 is provided with a connecting rod 132, both ends of the rack 22 are provided with connecting holes 222 matched with the connecting rod 132, the connecting rod 132 and the connecting holes can be in threaded connection or interference fit, when the rack 22 is installed, any end of the rack 22 towards the connecting rod 132 can be connected with the connecting rod 132, and the installation is convenient and firm. The gear shaft 21 includes a gear 212 and a rotation shaft 211 connected to the gear 212, and the speed at which the rack 22 moves is related to the size of the gear 212. In this embodiment, the length of the rack 22 is slightly longer than the circumference of the gear 212, i.e. the gear 212 rotates nearly one turn, and the distance that the rack 22 moves is slightly shorter than its own length. Alternatively, the rack is moved by a gear set in which a driving gear and a driven gear are engaged. Alternatively, the rack is moved by a planetary gear set.

As shown in fig. 3 and 4, in the embodiment of the present invention, the external control device further includes a rotary damping structure 3, and at least one end of the gear shaft 21 is connected to the rotary damping structure 3. By utilizing the friction force provided by the rotary damping structure 3, the gear shaft 21 can be still when the operator does not apply force to rotate, so that the rack 22 and the push-pull flexible shaft 1 are both still, and the suspension 203 is also kept stable. Specifically, the rotary damping structure 3 includes a connecting sleeve 32 and a friction plate 31, the connecting sleeve 32 is mounted on the gear shaft 21, the connecting sleeve 32 and the gear shaft 21 rotate synchronously, the friction plate 31 is fixed relative to the gear shaft 21, and an end surface of the connecting sleeve 32 is attached to the friction plate 31. When the operator does not rotate the gear shaft 21, the gear shaft 21 is stationary by the frictional force between the coupling sleeve 32 and the friction plate 31. Optionally, the rotary damping structure includes a connection sleeve and a friction sleeve, the friction sleeve is disposed on the connection sleeve, and the gear shaft can be stationary when the gear shaft rotates without force applied by an operator due to friction between an inner wall surface of the friction sleeve and an outer wall surface of the connection sleeve.

As shown in fig. 3 and 5, the external control device further comprises a guide rail block 23, the guide rail block 23 is fixedly arranged relative to the rack 22, and the guide rail block 23 is in sliding fit with the rack 22 along the axial direction of the push-pull flexible shaft 1. The guide rail block 23 can ensure that the rack 22 can not be deviated when moving along the axial direction of the push-pull flexible shaft 1. Specifically, the guide rail block 23 is provided with a guide groove 231 along the axial direction of the push-pull flexible shaft 1, and the rack 22 is in sliding fit with the guide groove 231. The guide rail block 23 is further provided with a limiting groove 232, and the rack 22 is provided with a limiting boss 221 which is in sliding fit with the limiting groove 232. Through the sliding fit of the limiting boss 221 and the limiting groove 232, not only the moving direction of the rack 22 can be limited, but also the moving distance of the rack 22 can be limited, that is, the limiting boss 221 can limit the rack 22 from continuously moving when moving to the two ends of the limiting groove 232, and the gear shaft 21 can not continuously rotate. Wherein, the limit boss 221 and the rack 22 are of a split structure. When the installation is carried out, the rack 22 is firstly installed in the guide groove 231, and then the limiting boss 221 is installed on the rack 22 through the limiting groove 232.

As shown in fig. 1 and 2, in the embodiment of the present invention, one end of the gear shaft 21 is connected to the rotating handle 4, which is convenient for the operator to rotate the gear shaft 21. The swing handle 4 is provided with a first mark 41 and a second mark 42, the first mark 41 is used for indicating that the swing handle 4 rotates along a first direction to enable the suspension lifting system 200 to descend, and the second mark 42 is used for indicating that the swing handle 4 rotates along a second direction to enable the suspension lifting system 200 to ascend. In this embodiment, the operator rotates the rotating handle 4 clockwise until the rotating handle cannot rotate further, and then lowers the suspension 203 to the lower limit position. The operator raises the suspension 203 to the upper limit position by turning the swing handle 4 counterclockwise to stop further turning.

As shown in fig. 1, 2 and 4, the gear transmission structure 2 is mounted outside the cab through the mounting housing 7, the gear transmission structure 2 is mounted in the mounting housing 7, and one end of the gear shaft 21 extends outside the mounting housing 7 and is connected to the rotary handle 4. Specifically, the mounting case 7 is fixed to the rear end of the rear wheel guard 300 of the tractor, which is convenient to mount and operate. The guide rail block 23 and the friction plate 31 are fixed in the mounting case 7 through connecting pieces.

As shown in fig. 2, 3 and 4, the mounting housing 7 is provided with a flexible shaft protection sleeve 5, and the outer end 12 passes through the flexible shaft protection sleeve 5 to be connected with a rack 22 in the mounting housing 7. The part close to the outer end 12 on the push-pull flexible shaft 1 is supported by the flexible shaft protective sleeve 5, so that the part close to the outer end 12 on the push-pull flexible shaft 1 can be prevented from being damaged due to downward bending under the influence of self gravity, and the push-pull flexible shaft 1 can not normally transmit.

As shown in fig. 2, 3 and 4, the mounting housing 7 includes a housing 71 and a cover plate 72, the housing 71 has an opening 711, the cover plate 72 covers the opening 711 and is connected to the housing 71 through at least one spacer 6, and the spacer 6 is disposed along the axial direction of the gear shaft 21. By arranging the spacer sleeve 6, the accurate installation position of the gear shaft 21 in the axial direction is ensured, the gear 212 on the gear shaft 21 and the rack 22 are matched in place in the axial direction of the gear shaft 21, meanwhile, the joint between the connecting sleeve 32 and the friction plate 31 can be ensured in place, the situation that the friction force is too small due to too large axial gap or too small axial extrusion force between the connecting sleeve 32 and the friction plate 31 and the rotary damping fails is avoided, and the situation that the friction force is too large due to too large axial extrusion force between the connecting sleeve 32 and the friction plate 31 and the friction force is difficult to rotate is also avoided. During installation, the gear transmission structure 2 is installed in the shell 71, the guide rail block 23 is fixedly connected with the shell 71 through a connecting piece, the rotating handle 4 is connected with one end of the gear shaft 21, one end of the spacing sleeve 6 is fixedly connected with the cover plate 72 through the connecting piece, and finally the cover plate 72 covers the opening 711 of the shell 71, and the other end of the spacing sleeve 6 is fixedly connected with the shell 71 through the connecting piece. The cover plate 72 is mounted to the rear wheel fender 300 by the mounting plate 8.

Second embodiment

As shown in fig. 1, the tractor of the present embodiment includes an external control device, and the tractor further includes a suspension lift system 200. The specific structure, the working principle and the beneficial effects of the external control device are the same as those of the external control device described in the first embodiment, and are not described herein again. The tractor further comprises a built-in control device, the built-in control device is installed in the cab and is also connected with the control valve 201 of the suspension lifting system 200, and an operator can control the suspension lifting system 200 through the built-in control device in the driving process.

The above description is only for the embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims (10)

1. An outboard control device for controlling a hitch lift system of a tractor from outside a cab, the outboard control device comprising:

the two ends of the push-pull flexible shaft are respectively an outer end and an inner end, the inner end is connected with a control valve of the suspension lifting system, and the outer end is positioned outside the cab;

the gear transmission structure is arranged outside the cab and connected with the outer end, and can drive the push-pull flexible shaft to move so as to push and pull the control valve;

and the rotary damping structure is connected with the gear transmission structure.

2. The external control device as set forth in claim 1,

the gear transmission structure comprises a rack and a gear shaft, the rack is connected with the outer end along the axial direction of the push-pull flexible shaft, the gear shaft is meshed with the rack, the gear shaft can drive the rack to move along the axial direction of the push-pull flexible shaft, and at least one end of the gear shaft is connected with the rotary damping structure.

3. The external control device as set forth in claim 2,

the rotary damping structure comprises a connecting sleeve and a friction plate, the connecting sleeve is installed on the gear shaft, the connecting sleeve and the gear shaft synchronously rotate, the friction plate is fixedly arranged relative to the gear shaft, and the end face of the connecting sleeve is attached to the friction plate.

4. The external control device as set forth in claim 2,

the external control device further comprises a guide rail block, the guide rail block is fixedly arranged relative to the rack, and the guide rail block is in sliding fit with the rack along the axial direction of the push-pull flexible shaft.

5. The external control device as set forth in claim 2,

one end of the gear shaft is connected with a rotating handle.

6. The external control device as set forth in claim 5,

the gear transmission structure is installed through the installation casing the outside of driver's cabin, gear transmission structure installs in the installation casing, the one end of gear shaft stretch in outside the installation casing and with twist grip is connected.

7. The external control device of claim 6,

the mounting shell is provided with a flexible shaft protective sleeve, and the outer end of the flexible shaft protective sleeve penetrates through the rack in the mounting shell.

8. The external control device as set forth in claim 6,

the suspension lifting system is characterized in that a first mark and a second mark are arranged on the rotating handle, the first mark is used for indicating that the rotating handle rotates along a first direction to enable the suspension lifting system to descend, and the second mark is used for indicating that the rotating handle rotates along a second direction to enable the suspension lifting system to ascend.

9. The external control device of claim 6,

the mounting shell comprises a shell body and a cover plate, the shell body is provided with an opening, the cover plate covers the opening and is connected with the shell body through at least one spacing sleeve, and the spacing sleeve is arranged along the axial direction of the gear shaft.

10. A tractor comprising the outboard control of any one of claims 1-9, the tractor further comprising a suspension lift system.

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