CN203865885U

CN203865885U - Movable arm tower-type crane

Info

Publication number: CN203865885U
Application number: CN201420287995.XU
Authority: CN
Inventors: 周军
Original assignee: CHINA SANJ CRANE Co Ltd
Current assignee: CHINA SANJ CRANE Co Ltd
Priority date: 2014-05-30
Filing date: 2014-05-30
Publication date: 2014-10-08
Anticipated expiration: 2024-05-30

Abstract

The utility model relates to a movable arm tower-type crane which comprises a jacking lifting device, wherein the jacking lifting device comprises a main beam parallelly fixed in the middle of a crane boom, wherein a lifting hook is fixed on the main beam through a pluggable pin, and a pulley I suitable for winding a steel wire rope is arranged on the lifting hook. When a crane lifts standard knots, the turning radius of the lifting hook can be greatly reduced, and the standard knots can be conveniently conveyed to an introducing beam. A pulley II on the main beam is suitable for being in transmission coordination with the steel wire rope so as to reduce tractive resistance of the steel wire rope, and pulleys III on a supporting rod are suitable for being in transmission coordination with the steel wire rope so as to play a guiding function on the steel wire rope when the standard knots are lifted.

Description

Arm tower crane

Technical field

The utility model relates to a kind of arm tower crane that year device is hung in jacking that has.

Background technology

Arm tower crane is mainly used in the manufacture process of high-rise, increase along with construction height, the operating altitude of hoisting crane also needs to regulate, therefore hoisting crane will constantly increase the quantity of the standard knot of its bottom, yet existing standard knot hangs the lifting hook that the process of liter mainly relies on this hoisting crane, because the full swing amplitude of crane arm is limited, hanging while rising standard knot, the horizontal throw at its lifting hook and crane rotation center (being radius of turn) often surpasses introduces the overhanging distance of beam, in order to realize the cooperation of both distances, by lengthening, introducing beam completes hoisting process smoothly, yet it is long to its installation to introduce beam, shipping is made troubles, the introduction beam simultaneously lengthening can affect its bending strength.

Utility model content

Technical problem to be solved in the utility model is to provide a kind ofly to be had jacking and hangs the arm tower crane that carries device, and the radius of turn while reducing to lift standard knot is convenient to arm tower crane and is hung and rise standard knot.

In order to solve the problems of the technologies described above, the utility model provides a kind of arm tower crane, comprising that jacking is hung carries a device, this jacking is hung year device and is comprised: the parallel girder that is fixed on crane arm middle part, on this girder, by pluggable pin, be fixed with suspension hook, this suspension hook is provided with the pulley one that is suitable for lay winding wire ropes.

The left end normal-running fit of described girder has the pulley two that is suitable for lay winding wire ropes.

The right-hand member normal-running fit of the right-hand member of described girder and strut bar, the right-hand member of this strut bar is provided with pulley three, and the left end of strut bar is provided with the pulley four with pulley three homonymies, and this strut bar is suitable for fixing by pluggable pin and girder.

With respect to prior art, the technique effect the utlity model has is:

1) arm tower crane of the present utility model adopts jacking to hang to carry after device, when hoisting crane hangs while carrying standard knot, can significantly reduce the radius of turn of suspension hook, is convenient to standard knot to hang to deliver to introduce on beam;

2) pulley two on girder of the present utility model is suitable for coordinating with wire rope gearing, reduces the traction resistance of steel rope;

3) pulley on strut bar three is suitable for coordinating with wire rope gearing with pulley four, when lifting standard knot, steel rope is play the guiding role.

Accompanying drawing explanation

In order to clearly demonstrate innovative principle of the present utility model and than the technical advantage of existing product, by applying the limiting examples of described principle, possible embodiment to be described by means of accompanying drawing below.In the drawings:

Fig. 1 is the arm tower crane integral structure figure of crane arm of the present utility model when maximum and minimum amplitude of oscillation position;

Fig. 2 is the partial enlarged drawing of crane arm of the present utility model when the minimum amplitude of oscillation;

Fig. 3 is the partial enlarged drawing of crane arm of the present utility model when the maximum amplitude of oscillation;

Fig. 4 is that the partial enlarged drawing of year device when locking hung in described jacking;

Fig. 5 is that the partial enlarged drawing when carrying device and rising in hanging is hung in described jacking.

The specific embodiment

Arm tower crane of the present utility model comprises that jacking is hung and carries a device 2, and this jacking is hung and carried a device 2 and comprise: pulley 2 21, girder 22, suspension hook 23, strut bar 24, protruded arm 25, knock hole 1, knock hole 2 27, knock hole 3 28, pulley 3 29, knock hole 4 30, knock hole 5 31, pulley 1, pulley 4 33.

As Figure 1-3, arm tower crane is generally supported on ground by a plurality of stacking standard knots that form 3, the standard knot 3 at top is generally provided with introduces beam 5, on this introduction beam 5, be sliding combined with and introduce dolly 4, described introduction dolly 4 and introduction beam 5 are for moving to the standard knot of slinging from ground 3 standard knot 3 at top, and then increase the quantity of standard knot and increase the operating altitude of hoisting crane, the upper end of the standard knot 3 at top is provided with the rotating assembly 6 that crane arm 1 is rotated, crane arm 1 is located at the top of this rotating assembly 6 and is suitable for rotating around its left end, one side of crane arm 1 is provided with for driving luffing mechanism 8 that crane arm 1 rotates and for the lifting mechanism 11 of improving material, this lifting mechanism 11 is provided with for runner, steel rope 9 one end and described runner are in transmission connection, the escapement frame 10 of the other end and crane arm 1 outer end, lifting hook 7 is in transmission connection, described steel rope 9 is arranged in escapement frame 10.

The middle part of described crane arm 1 is provided with jacking and hangs a year device 2, this jacking is hung a year device 2 and is comprised the parallel girder 22 being fixed on crane arm 1, the left end normal-running fit of this girder 22 has pulley 2 21, the right-hand member normal-running fit of the right-hand member of this girder 22 and strut bar 24, the right-hand member of this strut bar is provided with pulley 3 29, the left end of strut bar is provided with the pulley 4 33 with pulley 3 29 homonymies, the middle part of strut bar is provided with knock hole 3 28, the contiguous right-hand member place of girder 22 is provided with a protruded arm 25, the end of this protruded arm 25 is provided with knock hole 2 27, the middle part toothed section of girder 22 is provided with knock hole 4 30, the top normal-running fit of the suspension hook 23 matching with girder 22 has pulley 1, the lower end of this suspension hook 23 is hook portion, the middle part of suspension hook 23 is provided with knock hole 5 31, described steel rope 9 is suitable for being wound on above-mentioned pulley 2 21 and pulley 1 and with pulley 3 29 and pulley 4 33 transmissions on strut bar 24 and coordinates.

The mode of operation that year device is hung in jacking of the present utility model comprises lockup state and mode of operation, its lockup state is for as shown in Figure 4, knock hole 5 31 on suspension hook 23 is corresponding with knock hole 4 30 on girder 22 and position locking by pin, knock hole 3 28 on described strut bar 24 is corresponding with knock hole 2 27 on girder 22 and position locking by pin, described steel rope 9 is suitable for through the pulley 2 21 on girder 22 and suspension hook 23, pulley 1, pulley 3 29 and the lifting hook 7 of strut bar 24 right-hand members are in transmission connection, now this arm tower crane is for lifting cargo.

When jacking, hang and carry device when in running order, above-mentioned pluggable pin is removed, as shown in Figure 5, suspension hook 23 and hold-down arm 25 are all in active state, now the steel rope at escapement frame 10 places is by locking, when above-mentioned lifting mechanism 11 work, suspension hook 23 is suitable at steel rope, pulley 2 21, under the effect of pulley 1 and pulley 3 29, carry out vertical lift, thereby ground standard knot is sling to introducing on beam 5, when crane arm 1 is rocked to amplitude peak, suspension hook 23 is shorter than lifting hook 7 from the horizontal throw at crane rotation center, be convenient to standard knot to hang to rise to introduce on beam, also can correspondingly shorten the length of introducing beam simultaneously.

Obviously, above-described embodiment is only for the utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And these belong to apparent variation that spirit of the present utility model extended out or change still among protection domain of the present utility model.

Claims

1. an arm tower crane, comprising that jacking is hung carries a device, it is characterized in that: this jacking is hung year device and comprised: the parallel girder (22) that is fixed on crane arm (1) middle part of described hoisting crane, this girder (22) is upper is fixed with suspension hook (23) by pluggable pin, and this suspension hook (23) is provided with the pulley one (32) that is suitable for lay winding wire ropes (9).

2. arm tower crane according to claim 1, is characterized in that: the left end normal-running fit of described girder (22) has the pulley two (21) that is suitable for lay winding wire ropes (9).

3. arm tower crane according to claim 2, it is characterized in that: the right-hand member normal-running fit of the right-hand member of described girder (22) and strut bar (24), the right-hand member of this strut bar (24) is provided with pulley three (29), the left end of strut bar is provided with the pulley four (33) with pulley three (29) homonymies, and this strut bar (24) is suitable for by pluggable pin and girder (22) fixing.