SU1323520A1 - Crane anticreep device - Google Patents

Abstract

The invention relates to the field of hoisting and transport, mechanical engineering, namely, to anti-theft devices of a crane. The purpose of the invention is to reduce the metal capacity and dimensions of the device. The device comprises a frame 1 on which the lever 4 is fixed, is provided with T-shaped clamping jaws, a mechanism for fixing the lever 4 in an inoperative position, and a mechanism for shifting the jaws to the rail. When the crane is moved by the wind, the finger 3, moving together with the crane, turns the lever 4 in the horizontal plane, and the jaws clamp the rail head 5. 5 silt (L

Description

The invention relates to a lifting and transport engineering, and can be used in lifting cranes, in particular in gantry cranes.

The purpose of the invention is to reduce the metal capacity and dimensions of the device.

Figure 1 shows a schematic anti-theft device; in Fig.2, section A-A in Fig.1; on fig.Z - view In figure 1; in Fig. 4, section B-B in Fig. 1, with the device in an inactive position; on fig.Z - the same, with the working position.

The anti-theft device of the crane contains a frame 1, in the guiding groove 2 of which a finger 3 is located, with which a lever 4 is supported, fixed to the rail 5 by rollers 6, in a fixed (for example, press fit) lever 4 on the shelves 8 freely There are two T-shaped jaws 9, the dimensions of which are somewhat smaller than the groove 7. The jaws 9 are mounted in the lever 4 from below through the cavity in the lever above the rail 5 where the shelves 8 are missing. The maximum distance between the jaws 9 is somewhat greater than the width of the rail head 5.

In addition, the device contains a control cable 10 on which a rectangular frame 11 is fixedly mounted, on the lower crossbar of which (as on an axis) is block 12. A block 13 is thrown over a cable 13, one end of which is fixedly connected to the rod 14 and the other end also fixedly connected to the ring 15.

The rod 14 is located in the groove 16 of the frame 1 and the hole 17 of the lever 4. In the upper part, the groove 16 is narrowed and consists of a slot 18 whose width is less than the diameter of the rod 14. The lower part of the rod 14 is in the cavity of the lever 4 between the jaws 9. In the ring The 15 chickpea cable 19, which is connected at one end to the large arms of the rocker arm 20, and the other end to the large arm of the rocker arm 21. The arm 20, the hinge-22, is attached to the strut 23, and the rocker arm 21, the hinge 24 - the strut 25. and 21 are connected to the lever 4 springs

26 and 27. In addition, with their large pligs while their small shoulders with cables 36 and 37 are rocker arms 20 and 21 with cables 28 through holes 38 and 39 in lever .4 and 29, a wedge is connected with 30 and 31, P | ic- The moving jaws 9 along the flanges of the T-shaped groove 7 are brought close to the rail 5, which are set in holes 32 and 33 in the market. At the same time, the rocker arms 20 and 2

Chaga 4, between its sloping walls

34 and 35 and movable jaws 9. At the same time, the angle of the beveled walls 34 and 35 is equal to the bevel angle of wedges 30 and 31 and does not exceed 7 ° in order to ensure that the wedges do not squeeze up from the pressure from the jaws 9 when the crane is hijacked. Small shoulders of the rocker arms 20 and 21 with cables 36 and 37 through the holes 38 and 39 in the lever 4 are connected with jaws 9.

The device works as follows.

When the crane is operating, the lever 4, supported by the rollers 6 on the rail 5, moves along the rail. Rod 14, found

five

Driving in the groove 16 of the frame 1 and simultaneously in the hole 17 of the lever 4, it keeps the lever from turning around the axis of the finger 3.

When the crane trolley is displaced relative to the axis of the rail 5, the finger 3 moves in the groove 2 of the frame 1, and the rod 14 in the groove 16 of the frame 1. At this time, the control cable 10 is raised and secured. The control cable 10 is raised directly by the undercarriage by hand (taking into account the light weight of the rod 14 fixed on the rocker arms 20 and 21 of the wedges 30 and 31 and the small stiffness of the springs 26 and 27) or by a winch from the crane cabin. Installing the winch in the drawings are not shown. When the control cable 10 is raised, the frame 11 with the block 12 is lifted up, 5 the cable 13 presses the upper part of the rod 14 to the slot 18, and the other end through the ring 15 and the cable 19 holds the large shoulders of the rocker arms 20 and 21 in the raised position, overcoming resistance The springs 26 and 27, The wedges 30 and 31 are in a raised condition and there is a certain gap between the jaws 9 and the rail head 5. Cables 36 and 37 are loose at this moment.

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To bring the device into operation, the control cable 10 is loosened and the frame 11 with the block 12 is lowered down. At the same time, the springs 26 and 27, not meeting resistance from the cable 19, are compressed and rotated by the rocker arms, 20 and 21 around the axes of the hinges 22 and 24. Rotate to: this rocker arm occurs until

while their small shoulders with cables 36 and 37 through holes 38 and 39 in the lever .4

Moving jaws 9 will not move along the shelves of the T-shaped groove 7 close to the rail 5. At the same time, the rocker arms 20 and 21

operate independently of each other, their rotation around the axes of the hinges 22 and 24 is determined only by the size of the gap between the corresponding sponge 9 and the rail head 5. The rotating frames 20 and 21 simultaneously weaken the cables 28 and 29, and the wedges 30 and 31 under their own the weight is lowered into the gaps between the bevel walls 34 and 35 of the lever 4 and the movable jaws 9. In this case, the larger the gap between the sponge 9 and the rail 5, the more the beam 20 or 21 will turn and the lower the corresponding wedge 30 or 31 will lower. unequal lip gap Kami 9 and rail 5 is shown in figure 5.

When lowering the block 12 with the frame 11, the cable 13 weakens. The rod 14 under the action of its own weight is lowered in the hole 17 of the lever 4 until it stops at the lower end into the rail 5. The upper part of the rod 14 leaves the groove 16 of the frame 1.

When the crane is moved by the wind 3, it moves together with the crane, turns the lever 4 in the horizontal plane and the sponge 9 closes the rail head 5. The clamping force of the rail head is directly proportional to the force of the wind.

. To return the device to its original position, the control cable 10 is raised. In this case, the block 12 rotates, the rod 14 rises and rests with its upper part on frame 1. After that, the crane moves in the direction opposite to the hijacking. Lever 4 rotates into reverse

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The horn around the axis of the finger 3 and the rod 14 falls into the guide groove 16 of the frame 1. At this point, the biting of the rail with 5 jaws 9 stops, therefore, continuing to pull up the control cable 10, you can lift the large shoulders of the wheel 20 and 21, overcoming resistance springs 26 and 27, on cables 28 and 29, lift wedges 30 and 31 and bring the anti-theft locking device to its original position.

Claims (1)

Invention Formula The anti-theft device of the crane, which contains a frame, is nirno connected to it by means of a finger, can rotate in a horizontal plane a lever made with clamping jaws, and a mechanism for fixing the lever in an inoperative position, including a rod with a control cable fixed on it, characterized in that In order to reduce the metal capacity and dimensions of the device, grooves under the clamping jaws are made in the lever, which are mounted in it movably and are T-shaped, while the device is equipped with wedges and and on the levers with spring-loaded rocker arms, each of which is connected by one arm with a cable through a hole made in the lever, with a corresponding clamping sponge and the other cable with a wedge, which is placed in another hole of the lever in the gap between the sponge and the beveled wall of the hole and with a control cable. Aa W Fi.C 6-6 Fa 5