CN207811118U - A kind of no counterweight crane - Google Patents

Abstract

A kind of no counterweight crane, belong to the realm of building construction, including frame body, it is provided with rolling bearing on the frame body, it is provided with mobile platform on the rolling bearing, telescopic arm is provided on the mobile platform, is additionally provided on the mobile platform and the matched hoist engine of the arm, several are additionally provided on the frame body can resist the vertical strut of floor plates, and the vertical strut is in the dead astern of the mobile platform.Compared with prior art, this crane can be held out against by strut in upper sub-floor plates, tilting moment when balancing lifting, and length of boom can freely stretch, and can up and down, left-right rotation, lifting range is big.Also have many advantages, such as that dead weight is small, hoisting weight is big, mobile flexible, in place convenient, solves the problems of existing building counterweight crane and simple crane.

Description

A crane without counterweight

technical field

The utility model belongs to the field of building construction, in particular to a simple crane.

Background technique

Traditional cranes in the field of site construction are mainly divided into simple cranes with or without counterweights and counterweight cranes with counterweights. A common counterweight crane is to set a concrete (or steel block) counterweight on the back side of the pedestal, which is heavy, difficult to move, time-consuming and labor-intensive, and difficult to move once it is fixed. And general simple crane all is to adjust the angle of boom up and down and the swing of horizontal direction by steel wire rope, can't set up the boom of long distance and can't lift the article of heavy weight. These two cranes have limitations in actual use, so a crane with both advantages and no disadvantages is urgently needed in the construction field.

Contents of the invention

The utility model aims at the deficiencies in the prior art, and provides a crane without counterweight. The crane can be tightened on the upper and lower floor slabs through the struts to balance the overturning moment when lifting, and the length of the boom can be freely expanded and contracted, and can Up and down, left and right rotation, large lifting range. It also has the advantages of small self-weight, large lifting weight, flexible movement, and convenient positioning, which solves many problems of existing building counterweight cranes and simple cranes.

In order to solve the above-mentioned technical problems, the utility model is solved by the following technical solutions: a crane without counterweight, including a frame body, the frame body is provided with a rotating bearing, and the rotating bearing is provided with a mobile platform, The mobile platform is provided with a telescopic boom, the mobile platform is also provided with a hoist matched with the boom, and the frame body is also provided with several A vertical strut, the vertical strut is directly behind the mobile platform.

In the above technical solution, preferably, a jack is further arranged on the rotating bearing, and the jack is connected to the boom.

In the above technical solution, preferably, the boom includes an adjustable boom and a fixed boom, the adjustable boom can be moved and fixed on the fixed boom, and the jack is connected to the fixed boom.

In the above technical solution, preferably, the vertical strut includes a fixed strut and an adjustable strut, the adjustable strut can move and be fixed on the fixed strut, and the adjustable strut An upper support foot is arranged on the top of the pole.

In the above technical solution, preferably, several universal wheels are uniformly arranged on the bottom of the frame body.

In the above technical solution, preferably, the bottom of the frame body is evenly provided with several adjustable lower legs, the lower legs can be fixed on the frame body and the falling distance can allow the universal The wheel is suspended.

In the above technical solution, preferably, the adjustable boom and the fixed boom are fixed by bolts.

In the above technical solution, preferably, the fixed strut and the adjustable strut are fixed by bolts.

In the above-mentioned technical solution, preferably, the lower brace and the frame body are fixed by bolts.

The utility model is a simple crane without counterweight whose boom can be adjusted three-dimensionally. The boom of the crane is a multi-section retractable structure, and the lifting range can be adjusted freely; Lifting items with a high height; the root of the boom is equipped with a rotatable bearing, so that the boom can rotate horizontally, which is convenient for the transfer of items. 4 universal wheels are arranged at the lower part of the frame body, which is convenient for the crane to move, and the 4 lower legs on the edge of the universal wheels can be dropped after being in place to fix the crane. A vertical strut that can be adjusted up and down is installed on the rear side of the frame body, which can make the vertical strut and the upper and lower floor plates tight, and use the pressure of the vertical strut and the floor to balance the overturning moment of the crane.

Compared with the prior art, the crane can press the upper and lower floor slabs tightly through the struts to balance the overturning moment during lifting, and the length of the boom can be freely expanded and contracted, and can be rotated up and down, left and right, and the lifting range is large. It also has the advantages of small self-weight, large lifting weight, flexible movement, and convenient positioning, which solves many problems of existing building counterweight cranes and simple cranes.

Description of drawings

Fig. 1 is a schematic diagram of the utility model.

Fig. 2 is a three-dimensional schematic diagram of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Embodiment 1: As shown in Figures 1 to 2, a crane without a counterweight includes a frame body 1, the frame body 1 is provided with a rotating bearing 2, and the rotating bearing 2 is provided with a mobile platform 3 , the mobile platform 3 is provided with a telescopic boom 4, the boom 4 includes an adjustable boom 42 and a fixed boom 41, the adjustable boom 42 can be mounted on the fixed boom The arm 41 moves and is fixed, and the adjustable boom 42 and the fixed boom 41 are fixed by bolts. A jack 6 is also arranged on the rotating bearing 2, and the jack 6 is connected to the fixed boom 41. The mobile platform 3 is also provided with a winch 5 matched with the boom 4 . The frame body 1 is also provided with several vertical struts 7 which can bear against the floor board 100 , and the vertical struts 7 are directly behind the mobile platform 3 . Described vertical strut 7 comprises fixed strut 71 and adjustable strut 72, and described adjustable strut 72 can move and be fixed on described fixed strut 71, and described adjustable strut 72 The top is provided with an upper brace 73, and the fixed brace 71 and the adjustable brace 72 are fixed by bolts. The bottom of the frame 1 is evenly provided with several universal wheels 11, and the bottom of the frame 1 is evenly provided with several adjustable lower legs 12, and the lower legs 12 can be fixed on the On the frame body 1, the drop distance can allow the universal wheel 11 to be suspended in the air, and the lower brace 12 and the frame body 1 are fixed by bolts.

During use, the frame body 1 is first moved to the corresponding position by the universal wheel 11, and then the lower leg 12 is put down and fixed by bolts. In the relative position, let the upper support pin 73 on the top of the adjustable strut 72 bear against the floor board 100, and then fix the adjustable strut 72 by bolts. Finally just can carry out the hoisting of article by boom 4, in hoisting process boom 4 can adjust the length of boom 4 by adjustable boom 42 and fixed boom 41, adjust the inclination angle of boom 4 by jack 6, by rotating The bearing 2 regulates the horizontal rotation of the boom 4 . When needing to move, only need to loosen the bolt on the adjustable strut 72, put down the adjustable strut 72, and unclamp the bolt of lower strut 12, allow universal wheel 11 to ground, just can arbitrarily move crane.

Claims (9)

1. a kind of no counterweight crane, including frame body（1）, it is characterized in that, the frame body（1）On be provided with rolling bearing（2）, institute The rolling bearing stated（2）On be provided with mobile platform（3）, the mobile platform（3）On be provided with telescopic arm（4）, The mobile platform（3）On be additionally provided with and the arm（4）Matched hoist engine（5）, the frame body（1）On also set Floor plates can be resisted by being equipped with several（100）Vertical strut（7）, the vertical strut（7）In the mobile platform（3） Dead astern.

2. a kind of no counterweight crane according to claim 1, it is characterized in that, the rolling bearing（2）On be additionally provided with Jack（6）, the jack（6）It is connected with the arm（4）.

3. a kind of no counterweight crane according to claim 2, it is characterized in that, the arm（4）Including adjustable arm （42）With fixed arm（41）, the adjustable arm（42）It can be in the fixation arm（41）Upper movement and fixation, it is described Jack（6）The connection fixation arm（41）.

4. a kind of no counterweight crane according to claim 1, it is characterized in that, the vertical strut（7）Including rigid staybolt Bar（71）And rod-adjurstable（72）, the rod-adjurstable（72）It can be in the fixation strut（71）Upper movement and fixation, institute The rod-adjurstable stated（72）Top is provided with spike（73）.

5. a kind of no counterweight crane according to claim 1, it is characterized in that, the frame body（1）Bottom is evenly arranged with Several universal wheels（11）.

6. a kind of no counterweight crane according to claim 5, it is characterized in that, the frame body（1）Bottom is evenly arranged with Several adjustable lower spikes（12）, the lower spike（12）The frame body can be fixed on（1）Upper and dropping distance can allow The universal wheel（11）Vacantly.

7. a kind of no counterweight crane according to claim 3, it is characterized in that, the adjustable arm（42）Consolidate with described Determine arm（41）It is bolted.

8. a kind of no counterweight crane according to claim 4, it is characterized in that, the fixation strut（71）And rod-adjurstable （72）It is bolted.

9. a kind of no counterweight crane according to claim 6, it is characterized in that, the lower spike（12）With the frame body （1）Between be bolted.