Lever-segment winch

FIELD: mechanical engineering; load-lifting facilities; hand lever winches.

SUBSTANCE: according to invention, grips are made with tubular bodies of rectangular section. Four through holes are made in body of each grip. Upper holes are designed for tow segment cams with double-arm guides fitted-in from one side of grip body, and lower ones are designed for segment cams provided with single-arm guides fitted from other side of grip body. Double-arm lever of turn drive is two-section one, both sections of lever being connected by neck to pass wire rope from below. Each section is provided with slot with two axles fitted in cheeks of said slot. Said axles of one of sections are hinge-connected with power tie-rods hinge-connected with paired links of lower arms of double-arm guides of both grips from one of their sides. Axles of other section are hinge-connected by other power tie-rods with paired links of single-arm guides of both grips from opposite side.

EFFECT: improved reliability and wear resistance.

5 cl, 6 dwg

 

Known lever hoist containing a traction mechanism in the form of a drive duplicera lever pivotally linked by means of connecting rods with the segment grips the rope. These include a winch on A.S. USSR No. 424805, 497211, 536120, 576283. Winch in A.S. No. 536120 selected as a prototype, as the closest in design grabs the rope. This winch in the all-welded rope grips are two sponges, gripping the rope. Moving the sponge in contact with the segment Cam in welded to it on both sides of the leash. Using rod leashes connected with two shoulders lever. To the direction of movement of the grippers toward each case welded to 4 feet in contact with the guide slots of the slats of the housing of the winch.

The disadvantage of this winch is only one mobile sponge, gripping the rope, which is two times reduces the efficiency of the winch. A large distance from the axis of the rope to the hinge leash and traction (to the point of application to the capture of traction) create, capture a large overturning moment. As a result, when the motion capture in case there is a considerable friction, which further reduces the efficiency of the winch.

The winches on A.S. 424805, 497211, 576283 both jaws are movable, but the winch and grips in particular are fundamentally different from the winch by A.S. 536120. Grips rope these winches are very difficult to manufacture the Oleniy, little reliable, subject to strong wear of the contacting surfaces figure tides sponges and curly cut leads. When worn to have culled its winch, because the cost of the grips is 75% of the cost of the winch, and captures almost not remoteplay. Therefore, these winches as the prototype can not be considered.

The problem solved by the invention is the removal of all above-mentioned disadvantages of the prototype is the creation of a fundamentally new winch on a completely new character. The technical result is to increase the reliability of the winch.

This technical result is achieved by the lever-segment winch, comprising a housing and a traction mechanism comprising drive two shoulders lever pivotally connected through the power rods with hooks through which skipped rope, and grabs contain segmental Cams in contact with one side of the ear, and on the other hand with the jaws gripping the rope grips are made with a tubular rectangular buildings, in the case of each grip is made with four through holes, the top of which are two segmental Cams having two shoulders leashes and inserted from one side of the grip, and the bottom are designed to segment Kula the Cove, having one shoulder leashes and inserted on the other side of the capture and control four pairs mentioned segmental Cams two shoulders lever rotation is made of two sections, both sections of the arm are connected by a neck to pass underneath the rope, each section has a groove in the cheeks which is placed on two axes, referred to the axis of one of the sections pivotally connected with the power rods, pivotally connected with a pair of lower links two shoulders shoulders leads both grabs with one hand, the axis of the other section by means of the other power rods pivotally connected to a pair of links one shoulder leads both grips with their opposite hand.

For reversal of rope top two shoulders shoulders leads both grippers pivotally connected with the other pair of links, the latter, in turn, pivotally connected to the lever of the reverse, and the pair of links of the front grip pivotally connected to the lever through an intermediate reverse fork lever with threaded sleeve under telescopic lever that when performing a pendulum motion around the axis of the reverse lever by means of a forked lever moves both capture towards each other.

For mobility and comfort during coiling rope on one cheek corps winch attached removable rotating clip for Bay rope on ver is her body panels winch secured two brackets for mounting telescopic arm, on the other cheek of the housing by means of two spring clips fixed an integrated winch block with cargo hook, used to increase traction winch.

In the front part of the housing of the winch is mounted cargo clip, retractable into the housing by rotating around one of its axes mounting, the end of the winch housing is closed by a protective cover.

The reverse lever is mounted outside the housing of the winch and serves as a handle during transportation.

The invention is illustrated by drawings, where

figure 1 shows the lever-segment winch without the side panel (side view); figure 2 - view of the winch from the top (without top cover); figure 3 - section winch ABCD figure 1; figure 4 - mounting block by means of spring clips; figure 5 - mounting Bay rope; figure 6 - mounting the lever on the spring clips and the clip.

The winch consists of extruded shaped body 1 (Fig 1 and 3), the removable side panel 2 (figure 3), the rear removable cover 3 (Fig 1), the front cover plate 25 (figure 1). In the case of the winch host segment 2 capture rope 4 (figure 1) with a tubular rectangular buildings unwelded structure (see 1A in figure 3). The rectangular cross section of the housing of the grip changed the character of the motion capture in the case of winch: contact engagement with the upper and lower body panels winch staleliteynym, and on the plane, the motion capture is easier and more sustainable, decreased friction grip on the body of the winch.

In the case of each grip is made with 4 through holes, the top of which are two segmental Cam 5 with two shoulders leads 9 inserted from one side of the grip. The bottom is designed for two segmental Cam 5 with one shoulder harness 10, inserted on the other side of the grip. The Cams back surface in contact with the liner 6, working with jaws 7, gripping the rope 8.

To control four pairs of segmental Cams two shoulders lever 15 is made of two sections, both sections of the arm are connected by a neck to pass underneath the rope. Each section has a groove in the cheeks which are inserted two axis 15. The axis of one of the sections pivotally connected with the power rods 14, pivotally connected with a pair of links 11 of the lower shoulder, two shoulders leads both grips on both their sides. The axis of the other section by means of the other power rods pivotally connected to a pair of links one shoulder leads both grips with their opposite hand. Marked paired links, sviazyvalsia leashes upper and lower segmental Cams with power rods, are located on both sides of the grips, and the resultant of the forces of power rod lies in the center of the line connecting the hinges cause the s, and passes through the axis of the rope. This eliminates unwanted moments in grips, reduces friction grip on the body of the winch.

For reversal of the rope of the upper shoulders of the two shoulders of leads 9 of the rear grip pivotally connected between its pair of links 12. The shoulders of the two shoulders leashes front grip also connected with their a pair of links 13. The pair of links of the front and rear clamps are connected by reverse lever 18, and the pair link front grip connected to the lever through an intermediate reverse forked lever 19 with a threaded sleeve 22 under the telescopic lever 17. When performing a pendulum motion of the telescopic lever around the axis of the lever 21 and the reverse around the axis 20 of the pair of link 19 forked lever moves both capture opposite one relative to another. The reverse lever is mounted outside the housing of the winch that allows you to use it as a handle for transporting the winch, thus facilitates the housing of the winch.

In the rear part of the body of each claw grippers mounted on two stops 30. When the contact leads with lugs - grips on the rope unclenched. The spring 31 pulls the leash from the stops, creating thereby a preliminary preload grips on the rope.

For wound sponges (at the place of rope in the winch), you need an extremely to bring telescopic growling the om 17 and sleeve 16 both capture (submit lever is in forward position), to rearrange thumbscrew 32 of the side holes of the cover 3 in the Central (under the rope), the screw to move both capture the way forward is to choose the gaps between the leads and lugs 30. Sponges will open, the rope can be refilled in a winch or pull of the winch.

It should be noted that the reversal involves not only the top two shoulders leashes segment jaws with lever reverse, but the bottom one shoulder leashes lower jaws. In the absence of the lower Cams participating in the clamping of the rope and its promotion, the winch will lose 50% efficiency. The main role reversals, plays a forked lever 19. When the rotation of the telescopic arm (bushing 22) counterclockwise around the axis 21 and he pushes back the pair of links 13, rotates clockwise both two shoulders leash front gripper clamps Cams rope, pushes back the front grip with rope and simultaneously thrust reverse 18 moves forward the decompressed on the rope a pair of link 12 rear grip. At the same time lower the shoulders of the two shoulders of leads of the power rods 14 rotate free of the telescopic arm two shoulders lever 15. The second lever his section through the power rods 14 will turn the lower leashes both grips that will do the same operations with the rope and the top: synchronously with the upper hold the open her rope and oposite moved lower grips.

In the front part of the housing of the winch by means of two axes 23 mounted cargo bracket 24, which at the end of the work (the rope is wound on the yoke) turning around the upper axis 23 can clean the case (shown by the dotted line). When removed the bracket end of the housing of the winch is closed by a cover 25 (shown dotted). In the rear of the chassis mounted cargo hook 26 under the hook of the rope 27. If you need to double the pulling force of the rope passes through a pulley block with bracket 28, similar to the bracket 24. If you need to increase the speed of movement of the load (with less traction force) work has been performed without block. Integrated winch unit mounted on the cheek housing of the winch by means of two spring clips 29 (4)

To facilitate coiling of the rope in the Bay (to prevent its longitudinal twisting and gathering in the loop by manually winding) clamp for the cable on the winch mounted rotating (figure 5, 6). The clamp consists of a light Foundation - formed sections 35 with the guides 35 and to which the hinge 34 is mounted swivel clamp 35. Channel with yoke rotate on an axis 36, welded to the housing of the winch and is fixed on the body easily removable lambskin screw 37. If necessary, remove the winch yoke with a coil of rope necessary to turn the screw 37, to move the slider 38, freeing him from under her hat axis 36, to remove the clamp by synatom.

If necessary the replacement of the Cam with the leash must remove from the body of the grip screw 40, to pull out of the grip holding the Cam with the leash sponge and replace a couple on a new one from the repair kit. To fix the sponge screw 40. The ease of such repairs capture differentiates the winch from all existing ones.

When working with a winch plays a big role its portability, weight, reliability, maintainability, gear ratio. With this purpose, the reverse lever is mounted outside the housing and serves simultaneously as a handle during transportation and all accessories winch elements of its design (the Bay of the rope, the lever spring brackets 41, block - 4, 5, 6 are mounted on the hoist and transported with it. Heavy hooks, winches (one standard hook is comparable in weight to the weight of the entire winch, clamp the same capacity in >10 times easier hook) replaced light fixtures. Hook cable modified water large load by reducing the throat of the hook.

The bottleneck in the design of all lever hoists are their grips the rope, and grabs them loaded Cams. In this arrangement, each gripper has four segmental Cam - load on each Cam in 4 times less reliability 4 times.

The use of segmental Cams significantly increases the efficiency is bedke: for full clamping of the rope Cams (when compression of the rope 1 mm) is sufficient to rotate the lever by 4-5 degrees. The rest of the lever stroke is the movement of goods.

The winch has no equal maintainability: damage seizures almost unreal, the repair is carried out at the workplace, without welding, within a few minutes.

The winch has the minimum maximum constructive shoulder of the lever (15 mm)that provides maximum, ceteris paribus, gear ratio: when the lever length of 1000 mm and the presence of accessory winch block - 100-fold. For draft 3 TC - force on the lever minimum of 25 kgs.

1. Lever-segment winch, comprising a housing and a traction mechanism comprising drive two shoulders lever pivotally connected through the power rods with hooks through which skipped rope, and grabs contain segmental Cams in contact with one side of the ear, and on the other hand with the jaws gripping the rope, characterized in that the grips are made with a tubular rectangular buildings, in the case of each grip is made with four through holes, the top of which are two segmental Cams having two shoulders leashes and inserted from one side of the grip, and the lower are intended for segmental Cams with one shoulder leashes and inserted on the other side of the capture and control ceterm the pairs mentioned segmental Cams two shoulders lever rotation is made of two sections, both sections of the arm are connected by a neck to pass underneath the rope, each section has a groove in the cheeks which is placed on two axes, referred to the axis of one of the sections pivotally connected with the power rods, pivotally connected with a pair of lower links two shoulders shoulders leads both grabs with one hand, the axis of the other section by means of the other power rods pivotally connected to a pair of links one shoulder leads both grips with their opposite hand.

2. Lever-segment winch according to claim 1, characterized in that the reversing rope top two shoulders shoulders leads both grippers pivotally connected with the other pair of links, the latter, in turn, pivotally connected to the lever of the reverse, and the pair of links of the front grip pivotally connected to the lever through an intermediate reverse fork lever with threaded sleeve under telescopic lever that when performing a pendulum motion around the axis of the reverse lever by means of a forked lever moves both capture towards each other.

3. Lever-segment winch according to claim 1, characterized in that for mobility and comfort during coiling rope on one cheek corps winch attached removable rotating clip for Bay rope on the top panel of the housing of the winch attached two brackets for mounting telescopic growling is a, on the other cheek of the housing by means of two spring clips fixed an integrated winch block with cargo hook, used to increase traction winch.

4. Lever-segment winch according to claim 1, characterized in that the front part of the housing of the winch is mounted cargo clip, retractable into the housing by rotating around one of its axes mounting, the end of the winch housing is closed by a protective cover.

5. Lever-segment winch according to claim 1, characterized in that the reverse lever is mounted on the outside housing of the winch and serves as a handle during transportation.



 

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