Multifunctional lifting appliance special for prefabricated part

Abstract

The multifunctional lifting appliance special for the prefabricated part comprises an upper hanging beam and a lower hanging beam, the upper hanging beam is rotationally connected with the lower hanging beam, a pair of lifting mechanisms is symmetrically arranged below the lower hanging beam, and each lifting mechanism comprises a lifting support, an opening and closing motor, an opening and closing gear and a pair of moving arms. According to the lifting appliance, tubular objects and crescent precast blocks are lifted through structural cooperation, multifunctional lifting is achieved, lifting is simplified, and the lifting appliance is more convenient and efficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lifting appliance, in particular to a multifunctional lifting appliance for prefabricated components. BACKGROUND

[0002] In the process of building a subway or a tunnel, the lifting of cement prefabricated components is often involved. Since the interior of the subway or the tunnel is a circular hole, the shapes of these prefabricated components are different, and the shapes are mostly irregular. For example, a pipe piece prefabricated block is made into a circular arc shape; and in order to form a plane in a circular tunnel, a cross beam is added to the upper part of the circular arc to make a crescent-shaped prefabricated block. Since the shapes of these prefabricated components are irregular and the self-weight is large, the lifting is difficult. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a multifunctional lifting appliance for prefabricated components to overcome the deficiencies in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] The utility model discloses a multifunctional lifting appliance for prefabricated components, which is characterized by comprising upper hanging beams and lower hanging beams, wherein the upper hanging beams are rotationally connected with the lower hanging beams, a pair of lifting mechanisms are symmetrically arranged below the lower hanging beams, the lifting mechanism comprises a lifting support, an opening and closing motor, an opening and closing gear and a pair of moving arms, the lifting support is fixed to the bottom surface of the lower hanging beam, a vertical shaft is rotationally arranged in the lifting support, the opening and closing motor is fixed in the lifting support and drives the vertical shaft to rotate, the opening and closing gear is fixedly sleeved on the vertical shaft, a pair of the moving arms are arranged on the two sides of the opening and closing gear and are horizontally slidably connected with the lifting support, a rack meshing with the opening and closing gear is fixed to the end faces of the moving arms opposite to each other, and the ends of the moving arms away from each other extend out of the lifting support and are fixed with vertical beams, recesses are concavely arranged on the end faces of the vertical beams opposite to each other, a horizontal shaft is rotationally arranged in the recess, a flap is fixedly sleeved on the horizontal shaft, a turnover motor for driving the horizontal shaft to rotate is fixed in the recess, and an arc-shaped lifting plate is fixed between the two vertical beams on the same side of the pair of lifting mechanisms.

[0006] Preferably, in the above-mentioned multifunctional lifting appliance for prefabricated components, an opening and closing torque limiter and a ratchet device matched with the vertical shaft are arranged in the lifting support, and the ratchet device inhibits the rotation of the vertical shaft that stops.

[0007] Preferably, in the above-mentioned multifunctional lifting appliance for prefabricated components, the lower hanging beams are rotationally connected with the upper hanging beams through a rotary support, the outer teeth of the rotary support are meshingly connected with a rotary pinion, and a rotary motor for driving the rotary pinion to rotate is arranged on the upper hanging beam.

[0008] Preferably, in the above-mentioned special lifting tool for multifunctional precast components, a turning torque converter cooperating with the turning motor is provided in the groove.

[0009] Preferably, in the above-mentioned special lifting tool for multifunctional precast components, a pair of the lifting mechanisms are symmetrically arranged front and back, and the moving arms and the racks are both horizontally arranged.

[0010] Compared with the prior art, the advantages of the present utility model are as follows:

[0011] When hoisting a tube, the cooperation of the opening and closing motor and the gear rack drives a pair of moving arms to move away from each other, so that the arc-shaped lifting plate reaches both sides of the tube. Then, after descending, they move towards each other to lift and hoist the tube. When hoisting a crescent-shaped precast block, after the turning plate is turned down by the turning motor, the moving arms move towards each other and can be inserted into the culvert under the upper cross beam of the crescent-shaped precast block, and then hoisting is carried out, realizing multifunctional hoisting, simplifying hoisting, and being more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Fig. 1 The figure shows a front view structural schematic diagram of a special lifting tool for multifunctional precast components in a specific embodiment of the present utility model;

[0014] Fig. 2 The figure shows a side view structural schematic diagram of a special lifting tool for multifunctional precast components in a specific embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following will combine the drawings in the embodiments of the present utility model to describe the technical solutions in the embodiments of the present utility model in detail. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0016] Refer Figs. 1-2As shown, the multifunctional precast component lifting device in this embodiment includes an upper hanging beam 1 and a lower hanging beam 2. The upper hanging beam 1 and the lower hanging beam 2 are rotatably connected. A pair of lifting mechanisms 3 are symmetrically arranged below the lower hanging beam 2. The lifting mechanism 3 includes a lifting bracket 301, an opening and closing motor 302, an opening and closing gear 303, and a pair of moving arms 304. The lifting bracket 301 is fixed to the bottom surface of the lower hanging beam 2. A vertical shaft 305 is rotatably arranged inside the lifting bracket 301. The opening and closing motor 302 is fixed inside the lifting bracket 301 and drives the vertical shaft 305 to rotate. The opening and closing gear 303 is fixedly sleeved on the vertical shaft 305. The pair of moving arms 304 are arranged front and rear. The opening and closing gear 303 is horizontally slidably connected to the two sides of the lifting bracket 301. A pair of moving arms 304 are fixed with racks 306 that mesh with the opening and closing gear 303 on their opposite end faces. The opposite ends of the pair of moving arms 304 extend to the outside of the lifting bracket 301 and are fixed with vertical beams 307. The opposite end faces of the two vertical beams 307 are recessed with grooves 308. A horizontal shaft 309 is rotatably mounted in the grooves 308. A flip plate 310 is fixedly mounted on the horizontal shaft 309. A flipping motor 311 that drives the horizontal shaft 309 to rotate is fixed in the grooves 308. An arc-shaped hanging plate 4 is fixed between the two vertical beams 307 on the same side of the pair of lifting mechanisms 3.

[0017] Furthermore, the hoisting bracket 301 is equipped with an opening and closing torque limiter 5 and a ratchet device 6 that cooperate with the vertical shaft 305. The ratchet device 6 inhibits the rotation of the stopped vertical shaft 305.

[0018] Furthermore, the lower hanging beam 2 is rotatably connected to the upper hanging beam 1 via a slewing support 7. The external teeth of the slewing support 7 are engaged with a slewing pinion 8, and the upper hanging beam 1 is equipped with a slewing motor 9 that drives the slewing pinion 8 to rotate.

[0019] Furthermore, a flipping torque device 10 that cooperates with the flipping motor 311 is provided in the groove 308.

[0020] Furthermore, a pair of hoisting mechanisms 3 are symmetrically arranged front and rear, and the movable arm 304 and rack 306 are both horizontally arranged.

[0021] In this technical solution, when hoisting tubular structures, the cooperation of the opening and closing motor and the gear rack drives a pair of moving arms to move in opposite directions, bringing the arc-shaped lifting plate to both sides of the tubular object. Then, after lowering, they move towards each other to lift and hoist the tubular object. When hoisting crescent-shaped precast blocks, the rotary motor is used to flip down the flap, and the moving arms can be inserted into the culvert below the upper crossbeam of the crescent-shaped precast block by moving in opposite directions, and then hoisting is carried out. This achieves multi-functional hoisting, simplifies hoisting, and makes it more convenient and efficient.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0023] The above are merely specific embodiments of this application. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A multi-functional precast component lifting tool, characterized in that: The device includes an upper hanging beam and a lower hanging beam, which are rotatably connected. A pair of hoisting mechanisms are symmetrically arranged below the lower hanging beam. Each hoisting mechanism includes a hoisting bracket, an opening and closing motor, an opening and closing gear, and a pair of moving arms. The hoisting bracket is fixed to the bottom surface of the lower hanging beam. A vertical shaft is rotatably arranged inside the hoisting bracket. The opening and closing motor is fixed inside the hoisting bracket and drives the vertical shaft to rotate. The opening and closing gear is fixedly sleeved on the vertical shaft. The pair of moving arms are arranged front and rear on both sides of the opening and closing gear and are horizontally slidably connected to the hoisting bracket. A rack that meshes with the opening and closing gear is fixed on the facing end faces of the pair of moving arms. The opposing ends of the pair of moving arms extend outside the hoisting bracket and are fixedly attached to a vertical beam. A groove is recessed on the facing end faces of the two vertical beams. A horizontal shaft is rotatably arranged within the groove. A flip plate is fixedly sleeved on the horizontal shaft. A flipping motor that drives the horizontal shaft to rotate is fixed within the groove. An arc-shaped hanging plate is fixed between the two vertical beams on the same side of the pair of hoisting mechanisms.

2. The multifunctional precast component lifting tool according to claim 1, characterized in that: The hoisting bracket is equipped with an opening and closing torque limiter and a ratchet device that cooperate with the vertical shaft. The ratchet device inhibits the rotation of the stopped vertical shaft.

3. The multifunctional precast component lifting tool according to claim 1, characterized in that: The lower hanging beam is rotatably connected to the upper hanging beam via a slewing support. The external teeth of the slewing support are engaged with a slewing pinion. The upper hanging beam is equipped with a slewing motor that drives the slewing pinion to rotate.

4. The multifunctional precast component lifting tool according to claim 1, characterized in that: The groove is equipped with a flipping torque device that works with the flipping motor.

5. The multifunctional precast component lifting tool according to claim 1, characterized in that: The lifting mechanisms are arranged symmetrically front and rear, and the movable arm and rack are both arranged horizontally.

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