EE201800007A - Lifting equipment set and its use - Google Patents

Abstract

The invention is meant for lifting and displacing extra heavy details (for example prefabricated buildings, shipping containers etc). The presented lifting device set comprises two identical lifting means. The lifting means comprises telescopic fastening column, lower supporting slab, upper fastening plate, piston hydraulic lifting cylinder, supporting posts to support the lifting cylinder. The lifting means are operated as three-point system.

Description

Technical field

The invention relates to lifting and moving heavy objects.

State of the art

Moving and transporting especially heavy objects weighing several tons or tens of tons is difficult and labor-intensive.

A known lifting system (US2009026430 A1, Simplified Lifting Systems LLC, published on 29. 01. 2009) is intended for lifting and moving structures, buildings, machines and other massive and large-sized objects, whereby beams are additionally used when lifting the object. The lifting system includes one or more lifting devices that are adjustably connected to a support plate placed under the object. The lifting device has force elements, support elements and lifting elements that lift the object to a certain height. The disadvantage of this solution is the small lifting height of the lifting device, which is why the lifting must be repeated and additional base plates must be used to achieve the required lifting height. However, this makes the entire lifting process time-consuming and labor-intensive. Also, the object to be lifted is not attached to the lifting device in any way, which is why safe lifting of the object to be lifted is not guaranteed. This solution also does not provide for the possibility of moving the object to be lifted.

The closest technical nature to the invention is a lifting system (US8573564 B2, Rashall R. J, published 07.07. 2011), which allows lifting and moving heavy objects. The lifting system includes several lifting devices, wherein the lifting device includes a square base of the lifting device placed on the ground, which has right-angled side supports directed away from the object to be lifted and which is bolted or welded to the base. The lifting device includes a lifting cylinder having a piston head and upper and lower ends of the piston head. The piston head moves up and down inside the cylinder through a cylinder opening. The lower end of the piston head is attached to the base of the lifting device. The lifting device includes a lifting assembly having an upper square support plate arranged in corresponding slots of the first and second support posts, and the support posts are bolted or welded together with vertically extending posts from below, the lifting plate is

attached to the side frames. The lifting unit is attached to the piston unit by placing the upper end of the piston head in the opening of the piston cover. The piston unit and the lifting unit are placed in a housing with slots. The disadvantage of this solution is that the lifting plate lifts the object to a height of 10 to 27 cm at a time, allowing it to be moved only to a limited extent. Also, the object to be lifted is not separately attached to the lifting device, which causes the object to sway during lifting and moving and thus potentially damages the structures and interior finish of the object to be lifted (e.g. a modular house). Also, the presence of side supports and a square support plate does not guarantee that some of the lifting devices cannot twist or fall to the side (parallel to the object to be lifted) under heavy weight.

The essence of the invention

The purpose of the presented solution is to enable the lifting and moving of heavy objects and at the same time to protect the structures or interior finishes of the objects from damage during lifting and moving (e.g. prefabricated modular homes, the interior finishes of which may be damaged during lifting and moving, or sea containers, etc.).

The presented lifting device set includes two pairs of identical lifting devices, which are connected to each other from below and above by fastening means, on which there are adjustment and tensioning means. The lifting device of the lifting device set includes a telescopic mounting post, which is formed from two parallel posts, wherein a support angle is attached to the lower end of the telescopic mounting post and a support plate is attached to the upper end, a hydraulic lifting cylinder with a piston and support posts, which are arranged at an acute angle between the parallel posts of the telescopic mounting post and the support angle. The lifting cylinders of the lifting device set are intended to operate as a three-point lifting system.

List of drawings

Figure 1 shows a lifting device of a lifting device set;

Figure 2 shows an object to be lifted, which is attached to the lifting means between the telescopic attachment posts bordering the support corner of the lifting means and the support plate;

Figure 3 shows the embodiment of Figure 2, where the pairs of lifting means are connected from above by fastening means, which in the preferred embodiment are fastening bars;

Figure 4 shows the embodiment of Figure 2, in which the pairs of lifting means are connected from below by fastening chains;

Figure 5 shows a tensioning device for fastening chains.

Example of carrying out the invention

The presented lifting equipment set includes two pairs of identical lifting equipment 1.

The lifting device 1 includes a telescopic mounting post 2, a support angle 3, a lifting cylinder 4, support posts 5 and a support plate 6.

The telescopic mounting post 2 consists of two parallel posts and is height-adjustable. A support angle 3 is attached to the lower end of the telescopic mounting post 2, and a rectangular support plate 6 is attached to the upper end, whereby the support angle 3 is significantly longer than the support plate 6.

A hydraulic lifting cylinder 4 with a piston is placed between the parallel posts of the telescopic mounting post 2.

The support posts 5 are placed at an acute angle between the parallel posts of the telescopic mounting post 2 and the support corner 3.

The pair of lifting devices 1 of the lifting device set are interconnected at the top by a fastening device 7, which has adjustment means 9, and at the bottom by at least one fastening chain 8.

The fastening chain 8 is connected to the lifting means 1 by means of a tensioning means 10.

The presented lifting equipment set is used as follows.

The object to be lifted is fixed to the lifting device 1 between pairs of support angles 3 and support plates 6, whereby the vertical reach of the support angles 3 and support plates 6 can be adjusted using telescopic fixing posts 2, depending on the height of the object to be lifted.

The support brackets 3, the length of which is significantly longer than its width, the support plates 6 and the telescopic fixing posts 2 ensure the stability of the object to be lifted. This design of the support bracket 3 and the support plate 6 ensures that the object to be lifted is supported horizontally and does not sag horizontally during lifting. The telescopic fixing posts 2 ensure that the object to be lifted does not sag through the height during lifting (e.g. the wall of a modular house).

Support brackets 3 and support plates 6 fix the object to be lifted to the telescopic attachment posts 2. In this way, the object to be lifted is surrounded by the grippers on the sides.

The support posts 5 are placed parallel to the object to be lifted and they provide additional rigidity to the lifting cylinder 4 and prevent it from sagging to the side.

A pair of lifting devices located on opposite sides of the object to be lifted are connected to each other via a support plate 6 with a fastening device 7 and adjustment means 9. The fastening device 7 is adjustably attached to the support plates 6, so their length can be adjusted by the adjustment means 9 according to the width of the object to be lifted. The fastening device 7 can be either a rigid or a flexible fastening device (e.g. a bar, a load belt, a rope, etc.) depending on the object to be lifted. In a preferred embodiment, a fastening device 7 is used as a fastening device (see Figure 3).

A pair of lifting devices 1 located on opposite sides of the object to be lifted are interconnected from below by a fastening chain 8, the stiffness of which can be adjusted by a tensioning device 10, which is preferably a ratchet tensioner, one end of which is attached to a telescopic fastening post 2. Preferably, two fastening chains 8 are used to interconnect the pair of lifting devices 1.

The fastening means 7 and the fastening chains 8 securely fix the support angle 3 and the support plate 6 to the object to be lifted, thereby additionally ensuring the stability of the object to be lifted. This is especially important, for example, in the case of modular houses, where any minor instability during lifting and moving can damage the structures of the modular house and/or its interior decoration. In this way, the object to be lifted is surrounded by grippers all around.

The lifting cylinder 4 is hydraulic and manually operated. In the invention, four lifting cylinders 4 are used to lift the object, with one pair of lifting devices being placed in close proximity to one end of the object to be lifted and the other pair being placed approximately one third of the length of the same side of the object to be lifted away from its opposite ends. The lifting cylinders near the ends of the object operate independently of each other (lift with equal force), while the lifting cylinders away from the opposite ends operate as a single pair in such a way that the cylinder with the smaller load lifts, and the other compensates for the lifting force of the lifting cylinder if necessary. In this way, the lifting cylinders operate as a three-point lifting system.

The object to be lifted, attached to the lifting equipment 1, is lifted vertically with the lifting cylinders 4 to the required height so that a transport vehicle can be maneuvered underneath it, on which the lowered object is moved to the required new location. In the new location, the object is lowered to the required location again using the lifting equipment 1 together with the lifting cylinders 4.

The invention is convenient to use primarily for safely lifting and moving rectangular objects (e.g. modular homes or shipping containers). However, it can also be used for modular homes with gable roofs or other roof types.

Claims (8)

1. A lifting device set comprising several lifting devices, wherein the lifting device comprises attachment posts and their claw supports and a lifting cylinder with a piston, characterised in that the lifting device set comprises two pairs of lifting devices (1), which are connected to each other from below by a fastening chain (8) and from above by a fastening device (7), on which there are adjustment means (9) and tensioning means (10), wherein the lifting device (1) comprises: - a telescopic attachment post (2), which is formed from two parallel posts, between which there is a hydraulic lifting cylinder with a piston (4), wherein a support angle (3) is attached to the lower end of the telescopic attachment post (2) and a support plate (6) is attached to the upper end; - support posts (5), which are arranged at an acute angle between the parallel posts of the telescopic attachment post (2) and the support angle (3). 2. A lifting device set according to claim 1, characterized in that the length of the support angle (3) is greater than its width and the support angle (3) is longer than the support plate (6) and the telescopic mounting post (2) is intended to adjust the vertical reach of the support angle (3) and the support plate (6). 3. Lifting device set according to claim 1, characterized in that the adjusting means (9) of the fastening means (7) are intended to adjust the length of the fastening means (7). 4. A lifting device set according to claim 1, characterized in that the fastening chain (8) is connected to a pair of opposing lifting means (1) by means of a tensioning means (10). 5. A lifting device set according to claim 4, characterized in that the tensioning means (10) is a ratchet tensioner. 6. A lifting device set according to claim 1, characterized in that the pair of lifting means (1) has two tension chains (8). 7. Lifting device set according to claims 1 to 6, characterized in that the lifting device set consists of four lifting devices (1) with lifting cylinders (4), two fastening devices (7) and four fastening chains (8). 8. Use of a lifting device set according to claims 1 to 7, characterized in that one pair of lifting cylinders (4) of the lifting device (1) is placed in the immediate vicinity of one end of the side of the object to be lifted and the other pair of lifting cylinders (4) of the lifting device (1) is placed approximately one third of the length of the same side away from its opposite ends and that the object to be lifted is fixed to the lifting device (1) on its sides over its entire height between the support angle (3) and the support plate (6), whereby the lifting is carried out as a three-point system such that the lifting cylinders (4) located near the ends of one side of the object to be lifted operate independently of each other and the lifting cylinders (4) located away from the opposite ends of the object to be lifted operate as a single pair such that the lifting cylinder with a smaller load lifts and lowers, and the lifting cylinder acting as a pair compensates for this if necessary.