CN2345410Y - Lock for steering mechanism of hand tractor - Google Patents

Abstract

The utility model discloses a lock for the steering mechanisms of hand tractors. The utility model comprises a lock body, a lock core and a lock tongue. The utility model is characterized in that a shaft lock nose which can be rotated freely along with the shaft of the steering mechanism of a hand tractor in the shaft sleeve of the steering mechanism is fixed on the shaft. A passage is arranged on the position of the shaft sleeve of the steering mechanism, and the position is corresponding to he shaft lock nose. The lock body is welded in a position which enables the lock tongue to be aligned with the passage and be extended into the shaft lock nose to lock the shaft of the steering mechanism in the shaft sleeve of the steering mechanism. The utility model can be used for locking the shaft of the steering mechanism of the hand tractor, and the steering wheel of the hand tractor can not be rotated freely. The utility model has the advantages of simple structure, small volume, convenient use, etc.

Description

The small four-wheel tractor Direction machine lock

The utility model relates to a kind of additional lockset that can pin the Agricultural automotive vehicle bearing circle.Small four-wheel tractor Direction machine lock particularly, it includes lock body, lock core and dead bolt.

On small four-wheel tractor, do not have as yet at present and prevent the lockset that arbitrarily starts.

Task of the present utility model provides a kind of small four-wheel tractor Direction machine lock that can pin the small four-wheel tractor bearing circle.

Task of the present utility model is finished as follows, this small four-wheel tractor Direction machine lock includes lock body, lock core and dead bolt, it is characterized in that be fixed with one on the direction arbor of small four-wheel tractor can be with its shaft lock nose that in direction arbor cover, freely rotates, put at the direction arbor on the correspondence position of shaft lock nose and have a passage, lock body is welded in and makes the dead bolt can aligned with channel and can put in the shaft lock nose direction arbor is locked on the position in the direction arbor cover.Its shaft lock nose be one by the ring set of dowel fixes on the direction arbor, it has two lock nose grooves that dead bolt is put in.

This small four-wheel tractor direction machine can pin the direction arbor of small four-wheel tractor with it, and its bearing circle can't freely be rotated, and it has advantage simple in structure, easy to use.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is the cross-sectional view that small four-wheel tractor direction machine that the utility model provides is crossed direction arbor line of centers.

Fig. 2 is that Fig. 1 is the A-A cross-sectional view.

In Fig. 1, Fig. 2,1. the direction arbor overlaps 2. direction arbors, 3. shaft lock nose 3-1. pin 3-2. lock nose groove, 4. insurance springs, 5. safety tongues, 6. lock core 6-1. cylinder cam, 7. lock bodies, 8. dead bolt plugs, 9. dead bolt springs, 10. dead bolt 10-1. insurance step 10-2. and dials tongue step 11. insurance plugs

The utility model be fix one on the direction arbor 2 of small four-wheel tractor can be with its shaft lock nose 3 that in direction arbor cover 1, freely rotates, it is to be fixed on the direction arbor 2 with the ring set that pin 3-1 will be enclosed within on the direction arbor 2, also has two lock nose groove 3-2 that dead bolt 10 is put on ring set.

During unlatching, key is inserted clickwise, in rotary course, the cylinder cam 6-1 at lock core 6 rear portions and then rotates, and is dialling to dial tongue step 10-2 dead bolt 10 is retreated, when dead bolt 10 is retracted into lock body 7, safety tongue 5 discharges under the effect of insurance spring 4, make safety tongue 5 withstand the insurance step 10-1 of dead bolt 10, this moment, the direction machine was opened, arbitrarily steering wheel rotation, no matter how small four-wheel tractor vibrates, and safety tongue 5 can both rise and prevent dead bolt 10 bounce-back safety effects.

During locking, as long as with the key turning anticlockwise when changeing motionless, key is extracted out, when key turns round, drive cylinder cam 6-1 and press down safety tongue 5, after safety tongue 5 and dead bolt 10 disengagings, dead bolt 10 advances under the effect of dead bolt spring 9, at this moment, if dead bolt 10 is corresponding with the lock nose groove 3-2 on the shaft lock nose 3, dead bolt 10 directly puts in lock nose groove 3-2, with 2 lockings of direction arbor, bearing circle can not be rotated again, if the lock nose groove 3-2 on dead bolt 10 and the shaft lock nose 3 is not on time, the people also can relievedly leave away, because as long as a veer dish can lock automatically gently.

This small four-wheel tractor direction machine is because lock body 7 directly is welded on the direction arbor cover 1, and it is little, easy to use to have a volume.

Claims (2)

1, small four-wheel tractor Direction machine lock, it includes lock body, lock core and dead bolt, it is characterized in that: be fixed with one on the direction arbor of small four-wheel tractor can be with its shaft lock nose that in direction arbor cover, freely rotates, put at the direction arbor on the correspondence position of shaft lock nose and have a passage, lock body is welded in and makes the dead bolt can aligned with channel and can put in the shaft lock nose direction arbor is locked on the position in the direction arbor cover.

2, small four-wheel tractor Direction machine lock according to claim 1 is characterized in that: its shaft lock nose be one by the ring set of dowel fixes on the direction arbor, it has two lock nose grooves that dead bolt is put in.

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