Puller

 

(57) Abstract:

Usage: the invention relates to hoisting and transport machinery and can be used to move and install loads in horizontal, vertical and inclined planes with interior and exterior construction work. The inventive winch contains the terminals 1, 2, connected by rods to the rocker arms 5, 6. Between the clamps in the housing mounted element with a cylindrical surface 15 for winding the traction rope 16. The winch is provided with an additional clamp 20. When the winch terminals 1, 2 move in the same direction and interact with the rope 16, with some delay, one relative to another, with the efforts of the clip 1, 2 various. When the clamps are decompressed, the stiffness of the rope 16 is provided by a clamp 20. 2 C.p. f-crystals, 4 Il.

The invention relates to hoisting and transport machinery, namely: lever hoists, and can be used to move and install loads in horizontal, vertical and inclined planes with interior and exterior construction work.

Known lever hoist, comprising a housing with a bore is of orumila and associated each with a reciprocating moving towards each other and alternately interacting with traction rope clamps [1]

These winches do not provide excellent load retention, for example, when it is moved in a vertical or oblique directions. This is due to the fact that the condition of slippage of the traction rope clips tg f( where is the angle of friction, f is the coefficient of friction of the traction rope clips) is broken during operation of the winch, decreases the diameter of the rope under the application of a tensile stress wears out the rope and of the terminal block, increase the gap in the hinge rods because of their wear and tear.

Also known puller, comprising a housing with bores installed in the bores housing the drive shaft connected with the levers and rocker arms connected to the latter by means of two rods clamp having turned towards each other pads made with grooves for traction rope or two pieces of rope placed between them rope [2]

Known winch provides an increased coefficient of friction of the traction rope in the clip, reducing wear and tear during operation, but does not preclude inadvertent movement of the traction rope with the load, resulting in violation of the terms tg f. The problem to which the invention is directed, is the creation of ricain is stronger and vertical planes and precluding inadvertent movement of goods, even if disturbed condition tg f in the cable clamp. The technical result consists in the exclusion of the spontaneous movements of the traction rope with a load.

This is achieved in that in the above winch some of these rods are connected with one of the shoulders of the second rocker arm and the first clamp, the second with one of the shoulders of the second rocker arm and the second clamp, the third with both terminals, the fourth with one of the shoulders of the second rocker arm and the first clamp to move the clamp in one direction with a delay of one relative to another, simultaneous interaction with traction rope, and simultaneously wound, while the winch is supplied mounted in the bores of the housing between the first and second terminals and connected with the housing can be locked relative to his element with a cylindrical surface, covered wound on her traction rope, and an extra clip for engagement with a traction rope when the decompressed first and second clamps. Additional clamp may include two inclined rod, provided with pads with grooves under the rope, with one of the rods is made with a groove in which is placed a plate spring, preimushestvah, associated with the second rocker. The winch can be fitted with fixing plates, one of which is mounted for movement in a groove of the housing and fixing it in a predetermined position to reject the second rod when rewinding unloaded traction rope, and the second made with the possibility of placing it in the slot of the element with the cylindrical surface to provide a fixed position of this surface in the operating position of the winch and the output of this plate of the above-mentioned groove and fixing it to the housing to provide rotation of the cylindrical surface when rewinding unloaded traction rope.

In Fig. 1 shows a puller, General view; Fig. 2 site additional clamp; Fig. 3 the connection node of the second clamping rods; Fig. 4 element with a cylindrical surface.

Puller includes two cable clamp with a pulling force of 1 and less traction force 2, drive shafts 3, 4 rocker 5, 6, rotating in the bores of the housing 7, and the levers 8 control, a pair of rods 9, which connects the first arm of the rocker arm 5 with clip 1, a pair of rods 10, which provides communication between the cable terminals 1,2, and the end of each thrust 10 in connection with the clamp 2 is 2 has a groove 14. The winch is equipped with an element with a cylindrical surface 15 with the turns of the traction rope 16 mounted in the bores of the housing 7. This item is made with a groove 17, which includes a plate 18, a locking bolt 19 on the housing 7. In addition, the winch is provided with an additional clamp 20 with two spring-loaded torsion spring 21 is inclined at an angle from the condition tg f terminals 22,23 mounted on the axes of the bores 24 in the housing 7, is equipped with pads 25 with grooves under the rope 16, and the rod 23 is made with a groove 26 and is provided with a plate spring 27 mounted on the rod 23 and cooperating with the plate 28 fixed on the axis 29, a member rotationally couple with a thrust of 30, the other end of which is fixed on the yoke 6 and the housing 7 in a groove (not shown) set plate 31 fixed on the housing 7 by a bolt 32 to the desired position. Each clamp 1,2 has a pair of pads 33 and 34 with the grooves under the rope 16, or segments of the rope 35, increasing the grip of the clamps, pulling the rope 16, a pair of inclined cheeks 36, 37, plates 38, 39 and the compression spring (not shown) attached to the plate 38, 39 and cheek 36, 37.

Puller works as follows.

When the lever 8, set the nd arrows, moves the pair of rods 9 to the left, and cheeks 36 of the clamp 1 additionally bend over, clutching pads 33, and the clip 1 with a portion of the traction rope 16 and the load on the end moves to the left, acting on a pair of rods 10, which, in addition tilting cheeks 37 clip 2, move it with compressed traction rope pads 34 are also left with some delay relative to the clamp 1, pulling the coils of the traction rope 16 with the cylindrical surface 15. Delay the start of the movement of the clamp 2 relative to the clamp 1, moving in the same direction, is provided with a groove 11 in the thrust 10 at the connection node with clip 2 and is required for accumulation of stock, the length of the traction rope 16 on the cylindrical surface (the behavior of turns of the traction rope 16 on the cylindrical surface 15 is similar to the torsional spring) that provides the need for small traction force of the clamp 2, which extends practically unloaded branch of the traction rope 16. Through additional clamp 20 rope 16 is moved freely due to the rotation of the inclined rods 22, 23 around the axis 24 (the resistance of the torsion spring 21 and the friction on the axis 24 are small compared to the pulling force of the clip 2). Reverse (right) of the traction rope 16 and cargo to ensure the clockwise direction about a couple of rods 9, 10, rotates cheeks 36, 37 clamps 1,2-axis, mounted on the plates 38, 39 in the position close to the vertical, thereby pads 33, 34 push-UPS from the traction rope 16. A pair of rods 9, 10, and together with them and the terminals 1, 2 with the decompressed blocks 33, 34 are returned to the original position without portions of the rope 16 remaining stationary due to the compression of its additional clip 20, the load on which is small in comparison with the traction force of the clamp 2 (the load of the traction rope 16 is 10-100 kg depending on the number of turns of rope 16 on the cylindrical surface 15 due to certain dependencies, defining the equilibrium condition flexible strands on a rough surface (Euler's formula).

Reverse traction rope 16 and the load is provided by a lever 8 mounted on the drive shaft 4, the rocker arm 6 and the pairs of rods 12 and 13, the sequence of which is similar to that described above.

Bypass unloaded traction rope 16 by rotation of the lever 8 mounted on the drive shaft 4 to the left, which ensures the release of the pads 33, 34 from pulling the rope 16, fixing the rotated lever 8 (damn. not shown) on the housing 7, the movement of the plate 31 in the groove of the housing 7 to the position that provides the output of nekocase 7, and the output plate 18 of the groove 17 in the element with the cylindrical surface 15 and the fixing bolt 19 on the housing 7, which allows rotation of the cylindrical surface in the bores of the housing 7 when the bypass traction rope 16.

Below is a description of the work elements 27, 28, 30.

Plate 28, sliding on the profile of the spring 27, is moved to the right and tilting the rod 23, creates additional effort becoming jammed rope 16. This occurs when the decompressed terminals 1, 2, rocker arm 6 is rotated in the bore of the housing 7 counterclockwise, moving in the same direction as the point of attachment 30 on the yoke 6.

1. Puller, comprising a housing with bores installed in the bores housing the drive shaft connected with the levers and rocker arms connected to the latter by means of two rods clamp having turned towards each other pads made with grooves for traction rope or two pieces of rope, between which is placed rope, characterized in that some of these rods are connected with one of the shoulders of the first rocker arm and the first clamp, the second with one of the shoulders of the second rocker arm and the second clamp, the third with both the one direction with a delay of one relative to another, simultaneous interaction with traction rope and their simultaneous decoder, while the winch is supplied mounted in the bores of the housing between the first and second terminals and connected with the housing can be locked relative to his element with a cylindrical surface covered wound on her traction rope, and an extra clip for engagement with a traction rope when the decompressed first and second clamps.

2. Winch under item 1, characterized in that the additional clamp includes two inclined rod, provided with pads with grooves under the rope, with one of the rods is made with a groove in which is placed a plate spring, mostly wavy, interacting with the plate having the same response surface and connected with craving, associated with the second rocker.

3. Winch under item 2, characterized in that it is equipped with locking plates, one of which is mounted for movement in a groove of the housing and fixing it in a predetermined position to reject the second rod when rewinding unloaded traction rope, and the second made with the possibility of placing it in the slot of the element with the cylindrical surface dz mentioned groove and fixing it to the housing to provide rotation of the cylindrical surface when rewinding unloaded traction rope.

 

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