CN112830393A

CN112830393A - Safe hoisting device for construction

Info

Publication number: CN112830393A
Application number: CN202110001349.7A
Authority: CN
Inventors: 康艳霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2021-05-25

Abstract

The invention relates to the technical field of building construction, and discloses a safe hoisting device for building construction, which comprises a hoisting arm, wherein the lower end of the hoisting arm is fixedly connected with a hoisting box, the middle end of the hoisting box is connected with a first pulley in a sliding manner, the bottom end of the first pulley is fixedly connected with a sliding block, the left end and the right end of the first pulley are both fixedly connected with two first sliding rails, and the left side and the right side of the two first sliding rails are both connected with two second pulley blocks in a sliding manner. According to the invention, by introducing the protection mechanism, the auxiliary pulley effectively decomposes the pulling force of the traction rope so as to achieve the effect of protecting the traction rope, and meanwhile, the estimation of the gravity borne by the hoisted object is realized through the matching arrangement of the electromagnet, the conducting strip and the sliding block, so that the effect of reasonably adjusting the length of the hoisting arm so that the hoisted object can always keep moving within the safe construction radius is achieved, and the problem of safety accidents caused by the fact that the hoisting arm exceeds the maximum load moment due to unknown object weight in the prior art is solved.

Description

Safe hoisting device for construction

Technical Field

The invention relates to the technical field of building construction, in particular to a safe hoisting device for building construction.

Background

Hoisting device is a common building tool for construction, and it is dragged to being hoisted the object with traction force drive assembly pulley and lifting rope realization when using, will treat that moving object transports the target area, and labour saving and time saving is the indispensable a machine equipment in the building manufacturing field.

The prior safe hoisting device for building construction has the following technical defects when in use: firstly, when the crane lifts a heavy object, because the weight of the object is unknown, if the traction force is continuously increased at the moment, the tension borne by the lifting rope is continuously increased, and meanwhile, the tension borne by the crane base is also continuously increased, so that the crane base is easy to topple, and severe safety accidents are caused; secondly, the extension distance of the suspension arm of the traction crane determines the movable radius of the suspended object, and because the moment of the suspension arm is constant, namely the extension distance is inversely proportional to the gravity of the suspended object, when the weight of the object is unknown, the suspension arm can be extended blindly to cause overlarge moment and further cause safety accidents.

Disclosure of Invention

Aiming at the defects of the prior safe hoisting device for building construction in the use process, the invention provides the safe hoisting device for building construction, which has the advantages of simulating early warning to protect a hoisting hook component and being safe and controllable, and solves the technical problems in the prior art.

The invention provides the following technical scheme: a safety hoisting device for building construction comprises a hoisting arm, wherein the lower end of the hoisting arm is fixedly connected with a hoisting box, the middle end of the hoisting box is connected with a first pulley in a sliding manner, the bottom end of the first pulley is fixedly connected with a slide block, the left and right ends of the first pulley are fixedly connected with two first slide rails, the left and right sides of the two first slide rails are respectively connected with two second pulley blocks in a sliding manner, the left and right ends of the two second pulley blocks are respectively connected with two second slide rails in a fixed manner, the left and right ends of the two second slide rails are respectively connected with two third pulley blocks in a sliding manner, the two ends of the two third pulley blocks are respectively connected with the inner side wall of the hoisting box in a sliding manner, the outer side of the first pulley is sleeved with a traction rope, the bottom end of the traction rope is provided with a hoisting ring, the bottom end of, the back of the first pulley is provided with a transmission mechanism

Preferably, the protection mechanism includes first spout, the second spout, the first conducting strip of inside top lateral wall fixedly connected with of first spout, the left end lateral wall of first spout rotates and is connected with first baffle, the first spring of right-hand member bottom fixedly connected with of first baffle, the other end fixed connection of first spring is on the inside wall of first spout, the inside top lateral wall fixedly connected with second conducting strip of second spout, the right-hand member lateral wall of second spout rotates and is connected with the second baffle, the left end bottom fixedly connected with second spring of second baffle, the other end fixed connection of second spring is on the inside wall of second spout, the right side fixed rotation of first baffle is connected with the connecting rod, the other end of connecting rod rotates and is connected on the second baffle.

Preferably, the transmission mechanism comprises a first magnet, a first electromagnet is arranged at the upper end of the first magnet, a second magnet is arranged at the right end of the first magnet, a second electromagnet is arranged at the upper end of the second magnet, the first magnet is fixedly connected to the upper end of the second pulley block, the second electromagnet is fixedly connected to the upper end of the third pulley block, and the second pulley block and the third pulley block are connected to the guide rail in a sliding mode.

Preferably, the width value of the sliding block is greater than twice of the product of the cosine value of the inclination angle of the second baffle and the length value.

The invention has the following beneficial effects:

1. the invention realizes the upward movement of the hanging box through the driving of the hauling cable, further carries out the early warning of the weight force of the lifted object, realizes the upward movement of the movable pulley through the matching arrangement of the pulley, the rotating rod and the spring, simultaneously realizes the effect of protecting the hauling cable by introducing the protection mechanism and effectively decomposing the pulling force of the hauling cable through the auxiliary pulley, thereby solving the problem of safety accidents caused by the continuous increase of the tensile force borne by the hauling cable due to the unknown continuous increase of the weight of the lifted object in the prior art.

2. According to the invention, the electromagnet in the device is electrified through the access of the touch switch, and meanwhile, the estimation of the gravity borne by the hung object is realized through the matching arrangement among the electromagnet, the conducting strip and the sliding block, so that the effect of reasonably adjusting the length of the hanging arm to enable the hung object to always keep moving within a safe construction radius is achieved, and the problem of safety accidents caused by the fact that the hanging arm exceeds the maximum load moment due to the unknown object weight in the prior art is solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of an internal structure of the first slide rail according to the present invention;

FIG. 3 is a schematic structural view of a transmission mechanism at the back of the pulley block of the invention;

FIG. 4 is a side view of the hook assembly of the present invention;

FIG. 5 is a schematic view of the relationship between the fixed and movable pulleys.

In the figure: 1. a suspension arm; 2. hanging a box; 3. a first pulley; 31. a slider; 4. a second pulley block; 401. a first magnet; 402. a first electromagnet; 5. a third pulley block; 501. a second magnet; 502. a second electromagnet; 6. a first slide rail; 601. a first chute; 602. a first conductive sheet; 603. a first baffle plate; 604. a first spring; 610. a connecting rod; 611. a second chute; 612. a second conductive sheet; 613. a second baffle; 614. a second spring; 7. a second slide rail; 8. a hauling rope; 9. a hoisting ring; 10. and (4) a lifting hook.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a safety hoisting device for building construction comprises a boom 1, a lower end of the boom 1 is fixedly connected with a hoisting box 2, a middle end of the hoisting box 2 is slidably connected with a first pulley 3, a bottom end of the first pulley 3 is fixedly connected with a slide block 31, both left and right ends of the first pulley 3 are fixedly connected with two first slide rails 6, both left and right sides of the two first slide rails 6 are slidably connected with two second pulley blocks 4, both left and right ends of the two second pulley blocks 4 are fixedly connected with two second slide rails 7, both left and right ends of the two second slide rails 7 are slidably connected with two third pulley blocks 5, both ends of the two third pulley blocks 5 are slidably connected with an inner side wall of the hoisting box 2, a traction rope 8 is sleeved outside the first pulley 3, a hoisting ring 9 is arranged at a bottom end of the traction rope 8, a lifting hook 10 is fixedly connected at a bottom end of the hoisting ring 9, a protection mechanism is, the back of the first pulley 3 is provided with a transmission mechanism.

Preferably, the protection mechanism includes a first sliding groove 601, a second sliding groove 611, a first conductive sheet 602 is fixedly connected to a side wall of an inner top end of the first sliding groove 601, a first baffle 603 is rotatably connected to a side wall of a left end of the first sliding groove 601, a first spring 604 is fixedly connected to a bottom of a right end of the first baffle 603, another end of the first spring 604 is fixedly connected to an inner side wall of the first sliding groove 601, a second conductive sheet 612 is fixedly connected to a side wall of an inner top end of the second sliding groove 611, a second baffle 613 is rotatably connected to a side wall of a right end of the second sliding groove 611, a second spring 614 is fixedly connected to a bottom of a left end of the second baffle 613, another end of the second spring 614 is fixedly connected to an inner side wall of the second sliding groove 611, a connecting rod 610 is rotatably connected to a right side of the first baffle 603, and. When the hoisting device starts to work, the traction rope 8 sleeved on the first pulley 3 pulls a heavy object under the driving of the driving motor, the first pulley 3 slowly moves upwards in the hanging box 2 along with the increase of the traction force, the slider 31 at the bottom end of the slider moves upwards along the inside of the first slide rail 6, in the process that the side walls at the left end and the right end of the slider 31 slowly slide upwards, when the side walls contact the second baffle 613, the second baffle 613 is driven to rotate along the counterclockwise direction, the second spring 614 fixed on the side wall of the second baffle 613 is compressed by extrusion, the elastic force of the second spring 614 is gradually increased due to the increase of the compression amount, when the maximum compression amount is reached, the corresponding maximum acting force along the horizontal direction acts on the bottom end of the second baffle 613, at the moment, if the first pulley 3 continuously slides, the traction force is greater than the sliding friction force generated by the maximum elastic force of the second spring 614, and at the moment, the traction force is the, the transmission mechanism comprises a first magnet 401, a first electromagnet 402 is arranged at the upper end of the first magnet 401, a second magnet 501 is arranged at the right end of the first magnet 401, a second electromagnet 502 is arranged at the upper end of the second magnet 501, the first magnet 401 is fixedly connected to the upper end of a second pulley block 4, the second magnet 501 is fixedly connected to the upper end of a third pulley block 5, and the second pulley block 4 and the third pulley block 5 are connected to a guide rail in a sliding mode. At this time, the upper end of the first baffle 603 contacts the second conducting strip 612, the first electromagnet 402 is switched on, magnetic force is generated to adsorb the first magnet 401, the second pulley block 4 moves upwards, the traction rope 8 wound on the second pulley block 4 is tensioned, the effect of equally dividing the traction force received by the traction rope 8 is achieved, so that in the whole process that the sliding block 31 runs from the low end until the second baffle 613 rotates to the horizontal position, the threshold value F1 of the traction force corresponds to the value of the sliding friction force generated by the maximum deformation of the second spring 614, and the primary protection pulley block is started when the corresponding traction force reaches the value, so that the equal division of the traction force borne by the traction rope 8 is achieved. In the whole process that the sliding block 31 runs from the bottom end until the first baffle 603 rotates to the horizontal position, the threshold value F2 of the traction force is the value of the sliding friction force generated by the maximum deformation of the first spring 604, when the corresponding traction force reaches the value, the secondary protection pulley block is started, the traction force applied to the traction rope 8 is evenly divided, if the heavy object is lifted at the moment, the weight is less than or equal to the traction force within the range of the threshold value F2, and the radius range of the mechanical arm is the maximum traction force applied to the primary protection pulley block corresponding to the traction force, so that the moment of the suspension arm is always smaller than the maximum load moment. The width of the slider 31 is greater than twice the product of the cosine of the angle of inclination of the second baffle 613 and the length. The portion of the second blocking plate 613 obliquely extending to the inside of the slide rail is ensured to contact during the upward sliding movement of the slider 31.

The use method (working principle) of the invention is as follows:

when the hoisting device starts to work, the traction rope 8 sleeved on the first pulley 3 pulls a heavy object under the driving of the driving motor, the first pulley 3 slowly moves upwards in the hanging box 2 along with the increase of the traction force, the slider 31 at the bottom end of the slider moves upwards along the inside of the first slide rail 6, in the process that the side walls at the left end and the right end of the slider 31 slowly slide upwards, when the side walls contact the second baffle 613, the second baffle 613 is driven to rotate along the counterclockwise direction, the second spring 614 fixed on the side wall of the second baffle 613 is compressed by extrusion, the elastic force of the second spring 614 is gradually increased due to the increase of the compression amount, when the maximum compression amount is reached, the corresponding maximum acting force along the horizontal direction acts on the bottom end of the second baffle 613, at the moment, if the first pulley 3 continuously slides, the traction force is greater than the sliding friction force generated by the maximum elastic force of the second spring 614, and at the moment, the traction force is the, at this time, the upper end of the first baffle 603 contacts the second conductive sheet 612, and the first electromagnet 402 is switched on, so that magnetic force is generated to attract the first magnet 401, the second pulley block 4 is moved upward, the pulling rope 8 wound around the second pulley block 4 is tightened, the effect of equally dividing the pulling force received by the pulling rope 8 is achieved, so that in the whole process that the sliding block 31 runs from the lower end until the second baffle 613 rotates to the horizontal position, the threshold value F1 for the traction force corresponds to the value of the sliding friction force generated by the maximum amount of deformation of the second spring 614, when the corresponding traction force reaches the value, the primary protection pulley block is started to realize the even distribution of the traction force borne by the traction rope 8, if the heavy object is hoisted, in the range of the threshold value F1, the weight of the object is equal to the traction force, and the radius range of the mechanical arm is the maximum traction force borne by the primary protection pulley block corresponding to the traction force, so that the moment of the suspension arm is always smaller than the maximum load moment; if the heavy object still can not be lifted, the traction force is continuously increased to enable the sliding block 31 to continuously slide upwards, because the connecting rod 610 arranged inside the second sliding groove 611 connects the upper baffle plate and the lower baffle plate through the rotating shaft, when the second baffle plate 613 rotates in the vertical direction, the first baffle plate 603 is also pulled to the angle same as the initial state of the second baffle plate 613, the side wall of the sliding block 31 rotates anticlockwise by contact extrusion in the upward movement process, the first baffle plate 603 is compressed, the traction force is the second threshold value similarly, the upper end of the first baffle plate 603 is in contact with the first conducting strip 602, at this time, the second electromagnet 502 is switched on, magnetic force is generated to adsorb the second magnet 501, the third pulley block 5 moves upwards, the traction rope 8 wound on the third pulley block 5 is tensioned, and the effect of equally dividing the traction rope 8 to receive the traction force is achieved, in the whole process that the sliding block 31 runs from the bottom end until the first baffle 603 rotates to the horizontal position, the threshold value F2 of the traction force corresponds to the value of the sliding friction force generated by the maximum deformation amount of the first spring 604, when the corresponding traction force reaches the value, the secondary protection pulley block is started, the traction force applied to the traction rope 8 is evenly divided, if the heavy object is lifted at the moment, the size of the object is less than or equal to the size of the traction force within the range of the threshold value F2, and the radius range of the mechanical arm is the maximum traction force applied to the primary protection pulley block corresponding to the traction force, so that the moment of the suspension arm is always smaller than the maximum load moment.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a safe hoist device for construction, includes davit (1), its characterized in that: the lower end of the suspension arm (1) is fixedly connected with a suspension box (2), the middle end of the suspension box (2) is connected with a first pulley (3) in a sliding manner, the bottom end of the first pulley (3) is fixedly connected with a sliding block (31), the left and right ends of the first pulley (3) are both fixedly connected with two first sliding rails (6), the left and right sides of the two first sliding rails (6) are both connected with two second pulley blocks (4) in a sliding manner, the left and right ends of the two second pulley blocks (4) are both fixedly connected with two second sliding rails (7), the left and right ends of the two second sliding rails (7) are both connected with two third pulley blocks (5) in a sliding manner, the two ends of the two third pulley blocks (5) are connected with the inner side wall of the suspension box (2) in a sliding manner, the outer side of the first pulley (3) is sleeved with a traction rope (8), and the bottom end of the, the bottom fixedly connected with lifting hook (10) of rings (9), the inside of first slide rail (6) is equipped with protection machanism, the back of first pulley (3) is equipped with drive mechanism.

2. The safe hoisting device for building construction according to claim 1, characterized in that: the protection mechanism comprises a first sliding groove (601) and a second sliding groove (611), wherein a first conducting strip (602) is fixedly connected to the side wall of the top end inside the first sliding groove (601), a first baffle plate (603) is rotatably connected to the side wall of the left end of the first sliding groove (601), a first spring (604) is fixedly connected to the bottom of the right end of the first baffle plate (603), the other end of the first spring (604) is fixedly connected to the inner side wall of the first sliding groove (601), a second conducting strip (612) is fixedly connected to the side wall of the top end inside the second sliding groove (611), a second baffle plate (613) is rotatably connected to the side wall of the right end of the second sliding groove (611), a second spring (614) is fixedly connected to the bottom of the left end of the second baffle plate (613), the other end of the second spring (614) is fixedly connected to the inner side wall of the second sliding groove (611), and a connecting rod (610) is fixedly and rotatably connected to the, the other end of the connecting rod (610) is rotatably connected to the second baffle plate (613).

3. The safe hoisting device for building construction according to claim 1, characterized in that: the transmission mechanism comprises a first magnet (401), the upper end of the first magnet (401) is provided with a first electromagnet (402), the right end of the first magnet (401) is provided with a second magnet (501), the upper end of the second magnet (501) is provided with a second electromagnet (502), the first magnet (401) is fixedly connected to the upper end of a second pulley block (4), the second electromagnet (501) is fixedly connected to the upper end of a third pulley block (5), and the second pulley block (4) and the third pulley block (5) are in sliding connection with the guide rail.

4. The safe hoisting device for building construction according to claim 1, characterized in that: the width value of the sliding block (31) is more than twice of the product of the cosine value of the inclination angle of the second baffle (613) and the length value.