CN210594977U - Portable super lifting device - Google Patents

Abstract

The utility model discloses a portable super plays device: the super-lifting mast comprises two groups of super-lifting masts, a front balancing device and a rear balancing device, wherein the two groups of super-lifting masts are arranged at the front end of a basic arm of a crane boom and symmetrically unfolded in a Y shape, and a force balancing piece is connected between the front ends of the two groups of super-lifting masts. The utility model discloses a three force triangle is formed between two sets of super mast and the force balance piece, between two sets of preceding balancing unit and the force balance piece, between two sets of back balancing unit and the force balance piece, combines two super mast, and the two coordinate the atress, can obviously improve the rigidity of jib loading boom, reduce amount of deflection and side bend; on the premise of unchanged lifting performance, the whole weight of the super-lifting mast can be reduced by about 40%, the super-lifting device is favorable for storage, transportation and installation, great convenience is brought to site construction, and the potential safety hazard that the basic arm is torn at the installation position of the super-lifting mast is eliminated.

Description

Portable super lifting device

Technical Field

The utility model relates to an engineering vehicle technical field, concretely relates to portable super device.

Background

With the development of a wheel crane towards a kiloton product, in order to improve the lifting performance under a large-arm-length working condition, a superlift device is usually additionally arranged on the wheel crane.

The operation principle of the super lift device is described in more detail in patent document 1 (CN 202379629U). The super-lift device comprises a super-lift mast, a front balancing device, a rear balancing device and the like, and specifically comprises the following components: the super-lifting mast is arranged at the front end of the basic arm of the crane boom and can be unfolded left and right to be Y-shaped; the front balancing device comprises a winch and a steel wire rope, the winch is fixed on the super-lifting mast, one end of the steel wire rope is wound on the winch, and the other end of the steel wire rope is fixed on the tail arm of the crane boom and is used for transmitting a part of acting force generated when the crane boom works to the super-lifting mast, so that the deformation of the crane boom is reduced, and the lifting capacity is improved; the rear balancing device is a steel wire rope or a pull rod, one end of the rear balancing device acts on the super mast, and the other end of the rear balancing device is fixed at the lower end of the basic arm or on the balance weight to play a role of balancing the front balancing device.

In order to improve the performance of the super-lifting device, the size and specification of the super-lifting mast are increased conventionally, but the super-lifting mast is limited by a basic arm, the super-lifting mast cannot be infinitely enlarged, and the super-lifting device is too heavy, so that the super-lifting mast is not favorable for storage, transportation and installation, and the construction is inconvenient. In addition, in many accidents of breakage of the boom, the super-lift mast is not damaged, but the basic boom is torn at the installation position of the super-lift mast, that is, the size and the specification of the super-lift mast are simply increased, so that the improvement on the geometrical relationship between the boom and the steel wire rope and the stress balance are not obvious, and adverse effects can be caused.

SUMMERY OF THE UTILITY MODEL

In order to reduce the specification and the weight of the super lifting device, improve the rigidity of the jib loading boom simultaneously, the utility model provides a portable super lifting device.

The utility model adopts the technical scheme as follows:

a portable super-lifting device comprises two groups of super-lifting masts, a front balancing device and a rear balancing device, wherein the two groups of super-lifting masts are arranged at the front end of a basic arm of a crane boom and symmetrically unfolded in a Y shape, and a force balancing piece is connected between the front ends of the two groups of super-lifting masts.

The utility model has the advantages that: the utility model discloses a three force triangle is formed between two sets of super mast and the force balance piece, between two sets of preceding balancing unit and the force balance piece, between two sets of back balancing unit and the force balance piece, combines two super mast, and the two coordinate the atress, can obviously improve the rigidity of jib loading boom, reduce amount of deflection and side bend; on the premise of unchanged lifting performance, the whole weight of the super-lifting mast can be reduced by about 40%, the super-lifting device is favorable for storage, transportation and installation, great convenience is brought to site construction, and the potential safety hazard that the basic arm is torn at the installation position of the super-lifting mast is eliminated.

Preferably: the force balancing piece is a steel wire rope or a pull rod.

Preferably: the crane further comprises a winch and a balance rope, wherein a pulley is arranged at the top of the super-lifting mast, the winch is arranged at the lower end of the counterweight or the basic arm, the upper end of the balance rope is fixed on the last arm of the crane boom, the middle part of the balance rope bypasses the pulley, and the lower end of the balance rope bypasses the winch; the balance rope between the tail arm and the pulley forms the front balance device, and the balance rope between the pulley and the winch forms the rear balance device.

Preferably: two sets of the super-lifting masts are provided with a first position which is unfolded in a Y shape and a second position which is stored at two sides of the basic arm.

Preferably: the two side surfaces of the upper end of the basic arm are provided with inclined mounting plates with the upper part thick and the lower part thin, the super-lifting mast is mounted on the inclined mounting plates, and a supporting driving cylinder is arranged between the super-lifting mast and the basic arm.

Drawings

Fig. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a schematic view (vehicle body omitted) of the embodiment of the present invention.

Fig. 3 is a schematic view of the installation of the base arm and the super lift mast in the embodiment of the present invention.

The device comprises a super-lift mast 1, a basic arm 2, a force balancing piece 3, a winch 4, a balancing rope 5, a pulley 6, a counterweight 7, a tail boom 8, an inclined mounting plate 9 and a support driving cylinder 10.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

In the examples, as shown in FIGS. 1 to 3: a portable super-lifting device comprises two groups of super-lifting masts 1, two groups of front balancing devices and two groups of rear balancing devices, wherein the two groups of super-lifting masts 1 are arranged at the front end of a basic arm 2 of a crane boom and are symmetrically unfolded in a Y shape, and a force balancing piece 3 is connected between the front ends of the two groups of super-lifting masts 1. Three force triangles are formed between the two groups of super-lifting masts 1 and the force balance part 3, between the two groups of front balance devices and the force balance part 3 and between the two groups of rear balance devices and the force balance part 3, the two super-lifting masts 1 are combined and are coordinated to bear force, the rigidity of a crane boom can be obviously improved, and the deflection and the side bending are reduced; on the premise of unchanged lifting performance, the whole weight of the super-lifting mast 1 can be reduced by about 40%, the storage, the transportation and the installation of the super-lifting device are facilitated, great convenience is brought to field construction, and the potential safety hazard that the basic arm 2 is torn at the installation position of the super-lifting mast 1 is eliminated.

In the examples, as shown in FIGS. 1-2: the force balance piece 3 is a steel wire rope or a pull rod. Pull rod and wire rope all have better tensile strength, and the pull rod can make whole structure more stable usually, and wire rope has the installation, accomodates convenient characteristics, consequently can select according to the condition of difference.

In the examples, as shown in FIGS. 1-2: the crane further comprises a winch 4 and a balance rope 5, wherein a pulley 6 is arranged at the top of the super-lift mast 1, the winch 4 is arranged at the lower end of a counterweight 7 or the lower end of the basic arm 2, the upper end of the balance rope 5 is fixed on a last arm 8 of the crane boom, the middle part of the balance rope passes by the pulley 6, and the lower end of the balance rope is wound on the winch 4; the balance rope 5 between the tail arm 8 and the pulley 6 forms the front balance device, and the balance rope 5 between the pulley 6 and the winch 4 forms the rear balance device. The structure of the embodiment has two characteristics, namely, the installation position of the winch 4 is adjusted, the super-lifting mast 1 is adjusted to the vehicle body, the weight of the super-lifting mast 1 is further reduced, and the front balancing device and the rear balancing device are combined to the balancing rope 5, so that the stress of the front balancing device and the rear balancing device is more balanced.

In the examples, as shown in FIGS. 1 to 3: two sets of the super-lift masts 1 are provided with a first position which is unfolded in a Y shape and a second position which is accommodated at two sides of the basic arm 2. Specifically, as shown in fig. 3, the outer super lift mast 1 is in the first position, and the inner super lift mast 1 is in the second position. With this structure, the super lift mast 1 itself is light in weight, so that the super lift apparatus can be mounted on the base arm 2 without disassembly when not in use.

In the examples, as shown in FIGS. 1 to 3: inclined mounting plates 9 with the upper portions thick and the lower portions thin are arranged on two side faces of the upper end of the basic arm 2, the super-lift mast 1 is mounted on the inclined mounting plates 9, and a supporting driving cylinder 10 is arranged between the super-lift mast 1 and the basic arm 2. The inclined mounting plate 9 of the embodiment enables the super mast 1 to rotate under the action of the supporting driving cylinder 10, so that a certain included angle can be formed naturally, and an additional oil cylinder is not needed to be arranged to keep the included angle. In addition, the super-lifting mast 1 can be provided with a special pin positioning device to ensure stability, particularly ensure that the super-lifting mast 1 is stably positioned at a first Y-shaped unfolding position.

The using steps of the super lifting device of the embodiment are as follows:

(1) the tail arm 8 is accommodated in the basic arm 2, the force balance piece 3 is arranged on the super-lift mast 1, and the balance rope 5 is hung on the pulley 6;

(2) the supporting driving cylinder 10 drives the super-lifting mast 1 to rotate, and the winch 4 keeps synchronous paying off until the super-lifting mast 1 is unfolded in place in a Y shape;

(3) the tail arm 8 extends out of the basic arm 2, the winch 4 keeps synchronously paying off until the tail arm 8 is in place, and then hoisting can be started;

(4) and after the hoisting is finished, reversely carrying out the steps, namely finishing the recovery of the super lifting device.

It is obvious that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Obvious changes or variations coming within the spirit of the invention are intended to be covered by the scope of the invention.

Claims (5)

1. The utility model provides a portable super plays device, includes super plays mast (1), preceding balancing unit and back balancing unit respectively two sets ofly, two sets of super plays mast (1) are installed at basic arm (2) front end of jib loading boom, and bilateral symmetry is "Y" type and expandes, its characterized in that: and a force balancing piece (3) is connected between the front ends of the two groups of super-lifting masts (1).

2. The lightweight super lift device of claim 1, wherein: the force balance piece (3) is a steel wire rope or a pull rod.

3. The lightweight super lift device of claim 1, wherein: the crane is characterized by further comprising a winch (4) and a balance rope (5), wherein a pulley (6) is arranged at the top of the super-lift mast (1), the winch (4) is arranged at the lower end of a counterweight (7) or the lower end of the basic arm (2), the upper end of the balance rope (5) is fixed to a tail arm (8) of the crane boom, the middle of the balance rope bypasses the pulley (6), and the lower end of the balance rope winds the winch (4); the balance rope (5) between the tail arm (8) and the pulley (6) forms the front balance device, and the balance rope (5) between the pulley (6) and the winch (4) forms the rear balance device.

4. The lightweight super lift device of claim 1, wherein: the two groups of super-lifting masts (1) are provided with a first position which is unfolded in a Y shape and a second position which is stored at two sides of the basic arm (2).

5. The lightweight super lift device of claim 4, wherein: inclined mounting plates (9) with the upper portions thick and the lower portions thin are arranged on two side faces of the upper end of the basic arm (2), the super-lifting mast (1) is mounted on the inclined mounting plates (9), and a supporting driving cylinder (10) is arranged between the super-lifting mast (1) and the basic arm (2).

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