Summary of the invention
The objective of the invention is at the existing the problems referred to above of present Hand winch, the quick take-up of a kind of energy, semi-automatic lift winch easy to use are provided.
For achieving the above object, the present invention has adopted following technical proposal: this semi-automatic lift winch comprises support and the tape spool that is axially fixed on the support, be wound with belt on the tape spool, the outer end of the belt buckle that is being connected, an end of tape spool is provided with wheel word, the other end is being fixed ratchet, the sidepiece of ratchet is provided with and support pivotally attached ratchet, fixes a columnar housing on the support, and the volute wind spring is set in the housing, the inner of volute wind spring is connected on the tape spool, and the outer end is connected on the housing; Temporary locking device is set between tape spool and the housing.
When using this semi-automatic lift winch, at first the support of winch is fixed on the car body; Pull out sufficiently long belt then, make belt, the buckle of belt outer end is hooked the other end of car body through behind the goods that will bundle; Utilize the wheel word on the tape spool that belt is shunk at last.Owing to be provided with ratchet device on the tape spool, can guarantee that the belt that constantly tightens up can not unclamp, and binds goods fully until belt.In above-mentioned process of pulling out belt, the rotation of tape spool makes the energy storage of volute wind spring simultaneously, has produced the torque reaction that can make the tape spool rolling.But owing to be provided with temporary locking device between tape spool and the housing, the volute wind spring can not make tape spool rolling belt at once, just makes the belt of having pulled out can remain in the state of pulling out.
Above-mentioned temporary locking device comprises capping, the lock gear in the capping and the retaining bird on the housing that is positioned at the housing sidepiece, capping socket and being fixed on the tape spool, lock gear and capping are fixed together, and the retaining bird passes housing and hinged with housing, also is provided with spring between retaining bird and the housing.Under the effect of spring, the front end of retaining bird can snap in the teeth of lock gear.
A retaining bird seat preferably is set on housing, and the retaining bird is arranged in retaining bird seat and hinged with retaining bird seat.Under the situation that is not subjected to the external force effect, the retaining bird makes the front end of retaining bird snap in the teeth of lock gear under the elastic force effect of spring.The direction that snaps in is opposite with the direction of tape spool rolling belt.Obviously, lock gear is also along with tape spool rotates together in pulling out the belt process, but the retaining bird can not hinder the rotation of lock gear.
Pull out sufficiently long belt at winch, and when making buckle hook the other end of car body, can push the retaining bird earlier, make the unnecessary belt of volute wind spring rolling, goods is tied in advance.Then, utilize the wheel word on the tape spool that belt is tightened up again.Certainly, in making the belt wrapup procedure, need push the retaining bird, in case the retaining bird stops that tape spool rotates.
When unloading band, at first open ratchet, tape spool can be rotated, pull out some belts and the buckle of hook on car body broken away from car body; Push the retaining bird then, the volute wind spring that is in the energy storage state produces the torque reaction that makes the tape spool rolling, with the whole rollings of the belt that is unclamped.
In order to make the volute wind spring in use keep stable in the position, a baffle plate is set between volute wind spring and lock gear, baffle plate and lock gear are fixed together.In capping and lock gear rotation process, baffle plate is also along with rotating together.
Above-mentioned wheel word is generally independently crow bar of several circular holes of tape spool end and.When take-up, crow bar is inserted in the circular hole, pull crow bar and drive the tape spool rotation.Because crow bar is longer, when tape spool is rotated, pull more laborsaving.
Compared with prior art, the present invention has following advantage:
1, the present invention's torque reaction of having utilized the energy storage of volute wind spring to be produced comes the rolling belt, and is simple and reasonable, can have stronger practicality apace with the belt rolling.
2, the pine of this semi-automatic lift winch band process and common winch are basic identical, as long as but when the rolling belt, push and keep off bird, operate very simple and convenient.
3, with in this semi-automatic lift winch restraint of loads process,, keep off bird as long as push if the belt of pulling out is longer, just can very fast rolling.Particularly after buckle hooks car body, can push retaining bird rolling belt earlier, goods is tied in advance, can prevent that the obscission that buckle may occur from taking place, can reduce the take-up operation of the wheel word on the tape spool again, improve the speed of binding.
The specific embodiment
As shown in Figure 1, semi-automatic lift winch provided by the present invention comprises parts such as support 1, tape spool 2, belt 3, buckle 4, ratchet 6, ratchet 5, housing 7 and volute wind spring 9.When this semi-automatic lift winch used, support 1 generally was fixed on the car body of lorry.2 of tape spools are axially fixed on the support 1.Around belt 3, the outer end of belt 3 is a buckle 4 on the tape spool 2.In the present embodiment, belt 3 adopts the ribbon of flats, helps having bigger area of contact when restraint of loads and between the goods, can not cause the goods damage.The ratchet 6 of support 1 sidepiece and the concrete structure of ratchet 5 can be consulted the Figure of description 2 in the Chinese patent 99253202.7.After ratchet 5 snapped in ratchet 6, tape spool 2 reached the ratchet 6 that is fixed together with tape spool 2 and can only rotate along the direction of rolling belt 3; Ratchet 6 because of ratchet 5 blocks can not be towards backwards rotation.
As depicted in figs. 1 and 2, columnar housing 7 is fixed in the opposite side of support 1.Volute wind spring 9 the inners are fixed on the tape spool 2, and the inboard of housing 7 is fixed in the outer end.A retaining bird seat 11 is also being fixed in the inboard of housing 7, and retaining bird 10 is hinged with retaining bird seat 11.The front end of retaining bird 10 can snap in the teeth of lock gear 13.Spring 12 is located between the front portion and housing 7 inboards of retaining bird 10.Under the effect of spring 12, retaining bird 10 front ends can snap in the teeth of lock gear 13.
As shown in Figure 3, capping 8 is fixedlying connected to the inner side lock gear 13.After capping 8 is socketed on the tape spool 2, be positioned at the sidepiece of housing 7, and be fixed together, so capping 8 is also rotated along with tape spool 2 with tape spool 2.When retaining bird 10 snaps in lock gear 13, retaining bird 10 will stop the direction rotation of lock gear 13 along rolling belt 3.This action direction with ratchet 5 is just opposite.Therefore in actual mechanical process, need make ratchet 5 break away from ratchet 6 during drawstring; And need push retaining bird 10 during rolling, make the retaining bird 10 front ends gear 13 that goes out of lock.
In Fig. 3, the opposite side of lock gear 13 is provided with a baffle plate 15.15 buffer actions of baffle plate make volute wind spring 9 in use keep stable position.A breach 16 is arranged on the baffle plate 15, and retaining bird 10 and spring 12 can pass through baffle plate 15 when being used for capping 8 installations.
As shown in Figure 1, the outermost end of tape spool 2 has several circular holes 14.When tightening up belt 3,, pull crow bar and get final product as long as crow bar is inserted circular hole 14.