RU2357916C1 - Hoist with shaft motor - Google Patents

Abstract

FIELD: mechanics.

SUBSTANCE: invention relates to hauling and lifting mechanisms. The hoist consists of a flexible element and pulling unit moving along the said flexible element. The pulling unit consists of two parts. Both parts of pulling unit are provided with stoppers, which provide for pulling unit moving along the hoist only in one direction. The parts of pulling unit are coupled with power unit (either electrical or pneumatic), which brings together and moves apart one-by one the parts of pulling unit. As a result the pulling unit moves along flexible element.

EFFECT: energy applied to hoist is converted into forward motion.

11 cl, 3 dwg

Description

FIELD OF THE INVENTION

The present invention relates to traction and lifting mechanisms, namely to winches, and can be used, for example, in automobiles.

State of the art

Currently, various types of winches having a flexible cable and engine are known, which are widely used in industry. For example, various types of electric hoists are available on the website http://www.technikgts.ru/catalog/lebedki/. However, the known electric hoists have a kinematic scheme that converts rotational motion into translational.

To eliminate the above drawback, a winch with a linear motor is proposed that converts the energy supplied to the winch directly into translational movement.

SUMMARY OF THE INVENTION

Thus, it is an object of the present invention to provide a linear motor winch.

To achieve the technical result, a winch is provided comprising a flexible element, characterized in that it comprises a traction device consisting of at least two parts and capable of moving along said flexible element; parts of the traction device include stoppers that, in at least one state, limit the movement of parts of the traction device along the flexible element in one direction and do not limit the movement of parts of the traction device along the flexible element in the opposite direction; and contains a power device, which alternately brings together and removes parts of the traction device, moving them along the flexible element.

The flexible member may be a cable or chain.

The winch stops may include a wedge or eccentric mechanism, and in the case of a chain, have an element that enters the chain link when moving the traction element along the mentioned chain.

In one embodiment of the winch, the power device comprises a spring.

In yet another embodiment of the winch, the power device comprises electrical conductors, and the power device brings together and / or removes said parts of the traction device due to the interaction of said conductors with current (Ampere force).

For ease of use, the winch may comprise a drum with a spring for winding and / or tensioning the flexible member.

And finally, the power device of the winch can be pneumatic and receive compressed air from the compressor for pumping tires or the brake system of a car.

Brief Description of the Drawings

In all the drawings, the same reference numerals refer to the same or similar elements.

Figure 1 shows a General block diagram of a winch.

Figure 2 shows a design variant of the stopper for the chain.

Figure 3 shows a diagram of a pneumatic valve.

DETAILED DESCRIPTION OF THE INVENTION

The winch of the present invention can be implemented in several similar ways, which, however, are implemented in the same system. The block diagram of this system is shown in figure 1 and contains a flexible element 1, in this case represented by a cable, which is passed through the center through two parts of the traction device 2 and 3. Parts of the traction device 2 and 3 move relative to each other along the guides 4 provided limiters. In addition, parts of the traction device 2 and 3 have stoppers 5. In Fig. 1, the stoppers 5 are implemented as a wedge-shaped mechanism, but they can have a different design, for example, in the form of eccentrics or as in mounting and traction mechanisms. Additionally, parts 2 and 3 are connected by a spring. As a power device in figure 1, current coils 7 are used.

The winch operates using Ampere force. For example, the right end of the cable 1 is fixed to the support, and the load (car) is fixed to part 3 of the traction device. Spring 6 in a free state is compressed, so if you do not apply current to the coils, then the spring will bring parts 2 and 3 closer together. Then, the coils 7 are supplied with such voltage that the currents generated in them create a repulsive force of Ampere. Parts 2 and 3 of the traction device will begin to push off from each other, while part 2 will press on the stopper 5, which will not allow it to move to the left, and part 3 will move to the right, dragging the load along with it until it rests against the stopper of the guide 4 or Ampere force does not decrease to a critical value. After some time, for example, after 10 seconds, the voltage from the coils 7 can be removed, then the spring 6 will pull part 2 to part 3, because part 3 cannot move to the left due to stopper 5, and no load is fixed to part 2 . Then, for example, after 5 seconds, you can again apply voltage to the coils 7, and the process will be repeated.

In another embodiment, the spring 6 can be eliminated and parts 2 and 3 can be brought together by changing the direction of the current in one of the coils 7.

In another embodiment, the spring 6 in the free state is stretched and will remove parts 2 and 3 from each other. In this case, the load is fixed to part 2 and a voltage is applied to the coils 7 so that an attraction arises between them.

Power to the coils can be supplied manually or using an electronic switch.

Instead of a cable, a chain can be used as a flexible element. In this case, the stopper may be implemented as shown in FIG. 2. Spring-loaded element 9 element 8 allows part of the traction device 2 to move along the chain to the right and prevents movement to the left. So that the chain inside the traction device does not twist, the holes for it in parts 2 and 3 of the traction device can be made crosswise.

Another option for the power device may be a car camera or a pneumatic corrugated ring mounted between parts 2 and 3 of the traction device. The valve for the pneumatic ring is shown in Fig.3. An inner tube 14 (with holes) is inserted into the outer tube 10 with fittings 11, 12, and 13, which can move inside the tube 10. The fitting 11 is connected to the winch power device — a corrugated ring, the fitting 12 to the compressor, and the fitting 13 communicates with the atmosphere . The inner tube 14 has pushers 15 and 16 that move it left and right. Let's go back to figure 1 and imagine that instead of coils 7 between parts 2 and 3 installed pneumatic corrugated ring. At the beginning of operation, parts 2 and 3 of the traction device are located close and some protrusion on part 2 acts on the plunger 15 fixed to the part 3 of the valve and moves the inner tube 14 to the right. In this case, the openings of the inner tube 14 are arranged so that the atmospheric fitting 13 is closed, and air from the compressor through the fittings 12 and 11 enters the corrugated ring, expanding it and pushing apart parts 2 and 3 of the traction device until part 3 rests against guide rail stop 4. In this case, the rail stop 4 acts on the pusher 16, moving the inner tube 14 to the left. In order for the tube 14 to move left and right when reaching the end positions of the traction device sharply enough, triggers of the trigger type can be used. In the left position of the inner tube 14, both the compressor fitting 12 and the fitting of the corrugated ring 11 communicate with the atmosphere through the fitting 13 and the corrugated ring can be compressed by the spring 6, and parts 2 and 3 of the traction mechanism are brought together.

As a source of compressed air, you can use a compressor for inflating tires or a compressor of the pneumatic brake system of a car.

For ease of use, the winch can be equipped with a coil with a spring like roulettes for measuring distances. A free, unused end of the flexible element 1 (left in FIG. 1), to which the load is not fixed, will be wound on this coil. In this case, the necessary tension can be created so that the flexible element 1 does not bend when the part 2 of the traction device moves.

Claims (11)

1. A winch containing a flexible element, characterized in that it comprises a traction device consisting of at least two parts and capable of moving along said flexible element; said parts of the traction device comprise stoppers that, in at least one state, limit the movement of said parts of the traction device along said flexible element in one direction and do not limit the movement of said parts of a traction device along said flexible element in the opposite direction; contains a power device that alternately brings together and removes the said parts of the traction device, moving them along the said flexible element. 2. The winch according to claim 1, characterized in that the said flexible element is a cable. 3. The winch according to claim 1, characterized in that the said flexible element is a chain. 4. The winch according to claim 1 or 2, characterized in that the said stoppers comprise a wedge or eccentric mechanism. 5. The winch according to claim 3, characterized in that said stoppers have an element that enters the link of said chain when moving said traction element along said chain. 6. The winch according to claim 1, characterized in that said power device comprises a spring. 7. The winch according to claim 1, characterized in that the power device contains electrical conductors. 8. The winch according to claim 7, characterized in that said power device brings together and / or removes said parts of the traction device due to the interaction of said conductors with current. 9. The winch according to claim 1, characterized in that it comprises a drum with a spring for winding and / or tensioning said flexible element. 10. The winch according to claim 1, characterized in that the said power device is pneumatic. 11. The winch of claim 10, characterized in that the air into the aforementioned pneumatic power device is supplied from a compressor for pumping tires or the brake system of a car.

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