Concealed single-oil-cylinder double-hoisting-point synchronous hoisting mechanism

Abstract

The invention discloses a hidden single-oil-cylinder double-hoisting-point synchronous hoisting mechanism which comprises a portal frame, through grooves are formed in the two sides of a cross beam of the portal frame, double fixed pulleys are installed in one through groove, a single fixed pulley is installed in the other through groove, and a hoisting oil cylinder is arranged in one stand column of the portal frame; the telescopic end of the lifting oil cylinder is connected with a first steel wire rope and a second steel wire rope, the ends of the first steel wire rope and the second steel wire rope are both connected with lifting hooks, and the first steel wire rope is located on the inner side of the portal frame after bypassing the double fixed pulleys and the single fixed pulley. The beam of the portal frame is further provided with a leveling mechanism abutting against the second steel wire rope and used for adjusting the position of a lifting hook at the end. The lifting device is high in space utilization rate, the effect that two lifting points are completely synchronous can be achieved, a lifted object can be conveniently leveled, it is guaranteed that the two steel wire ropes are evenly stressed, the positions of the two lifting points can be adjusted, the lifting points can be conveniently moved to the lifted object, and manual dragging is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, in particular to a hidden single-cylinder double-hanging-point synchronous lifting mechanism. Background Art

[0002] At present, the situation of two hooks lifting heavy objects synchronously is more and more used. The common method is to control two electric hoists to lift objects together. This method has the disadvantages of poor synchronization, difficult control, large space occupation and high cost. The patent with announcement number CN206014270U discloses a double electric hoist lifting device, including a right guide rail, a left guide rail, a crossbeam, two sets of electric hoists and hooks, the right guide rail and the left guide rail are parallel to each other, one end of the crossbeam is slidably supported on the right guide rail, and the other end is slidably supported on the left guide rail, and a set of electric hoists are respectively installed at positions near both ends of the crossbeam. It uses two sets of independent electric hoists for lifting, which has poor synchronization, is difficult to control, and the position of the lifting point cannot be adjusted; The patent with announcement number CN103991812A discloses a single-motor driven double-reduction drum type large-tonnage double-hanging point wire rope hoist, wherein both the driving machine and the passive machine are provided with a hook device, the driving machine comprises a driving machine drum device, a motor and a driving machine welding reducer, and the motor and the driving machine welding reducer are respectively located on different sides of the driving machine drum device; the passive machine comprises a passive machine drum device and a passive machine welding reducer, and the passive machine welding reducer is located opposite to the driving machine welding reducer, and the driving machine welding reducer is connected to the passive machine welding reducer through a transmission shaft, and a gear coupling is provided between the driving machine welding reducer and the transmission shaft and between the passive machine welding reducer and the transmission shaft, and the single motor drives the double reducer transmission to drive the respective drum wire rope transmission systems on the driving and passive machines to lift heavy objects, although the synchronization of the two lifting points is good, the lifting point position cannot be adjusted, the space occupied is large, and the cost is high; Therefore, it is urgent to propose a lifting mechanism that occupies little space and has good synchronization between two lifting points. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a hidden single-cylinder dual-hanging-point synchronous lifting mechanism with high space utilization. It can achieve the effect of complete synchronization of the two hanging points, facilitate leveling of the hanging objects, ensure that the two steel wire ropes are evenly stressed, and can also adjust the positions of the two hanging points, facilitate moving the hanging points to the hanging objects, reduce human dragging, and effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hidden single-cylinder dual-hanging-point synchronous lifting mechanism, comprising a gantry, wherein both sides of the crossbeam of the gantry are provided with through grooves, wherein one of the through grooves is provided with a double fixed pulley, and the other through groove is provided with a single fixed pulley, a lifting cylinder is provided inside a column of the gantry, the lifting cylinder is on the same side as the double fixed pulleys, a telescopic end of the lifting cylinder is connected with a steel wire rope 1 and a steel wire rope 2, both ends of the steel wire rope 1 and the steel wire rope 2 are connected with hooks, the steel wire rope 1 is located inside the gantry after passing around the double fixed pulleys, and the steel wire rope 2 is located inside the gantry after passing around the double fixed pulleys and the single fixed pulley; the crossbeam of the gantry is also provided with a leveling mechanism which contacts the steel wire rope 2 and is used to adjust the position of the hook at its end.

[0005] Preferably, a rope pulling mechanism is further provided at the lower part of the crossbeam of the gantry, and the rope pulling mechanism includes a fixed frame, and movable pulleys are symmetrically slidably matched on both sides of the fixed frame. Wire rope 1 passes around the double fixed pulleys and then passes around the corresponding movable pulleys, and wire rope 2 passes around the double fixed pulleys and the single fixed pulley and then passes around the corresponding movable pulley. Wire rope 3 is connected between the two movable pulleys, and the fixed frame is provided with a hydraulic cylinder 1. The telescopic end of the hydraulic cylinder 1 is provided with a roller 1 that contacts with wire rope 3.

[0006] Preferably, both axial ends of the movable pulley are connected to a slide seat via bearings, the slide seat is a groove-type structure, and the steel wire rope is connected to the slide seat.

[0007] Preferably, the fixing frame is a hollow frame structure, and two opposite side walls of the fixing frame are provided with sliding grooves adapted to the sliding seat.

[0008] Preferably, the leveling mechanism comprises a second hydraulic cylinder, and a second roller is mounted on the telescopic end of the second hydraulic cylinder via a wheel frame.

[0009] Preferably, the telescopic end of the lifting cylinder is connected to a fixed plate via a pin, and the wire rope 1 and the wire rope 2 are both connected to the fixed plate via a rope wedge and a pin.

[0010] Preferably, the lifting cylinder is hinged to the bottom of the column of the gantry through an ear seat, and the column of the gantry is threadedly connected with a plurality of tightening bolts that abut against and position the cylinder body of the lifting cylinder.

[0011] Preferably, the lower parts of the two columns of the gantry are provided with walking mechanisms, and the walking mechanisms cooperate with the tracks.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: two lifting points are fixed at one end of the lifting cylinder by a steel wire rope, the lifting cylinder is hidden in the column, and the extension and retraction of the lifting cylinder drives the two lifting points to move, so as to achieve the purpose of completely synchronous lifting and lowering of the two lifting points. One of the lifting points can be adjusted separately under the action of the leveling mechanism to achieve the purpose of leveling or flipping the heavy object. The original space of the column and the main beam is utilized, and other external space is rarely occupied. The space utilization rate is high, and the effect of completely synchronization of the two lifting points can be achieved, which is convenient for leveling the suspended object and ensuring that the two steel wire ropes are evenly stressed. In addition, a rope pulling mechanism is provided to adjust the position of the two lifting points by changing the spacing between the two fixed pulleys, so as to facilitate moving the lifting point to the suspended object and reduce manpower dragging. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is an enlarged schematic diagram of the local structure of the present invention; Figure 3 A top view of the pull rope mechanism of the present invention; Figure 4 It is a partial structural cross-sectional view of the present invention.

[0014] In the figure: 1 gantry, 2 lifting cylinder, 3 wire rope 1, 4 double fixed pulley, 5 wire rope 2, 6 leveling mechanism, 6.1 roller 2, 6.2 hydraulic cylinder 2, 7 single fixed pulley, 8 rope pulling mechanism, 8.1 movable pulley, 8.2 slide, 8.3 fixed frame, 8.4 roller 1, 8.5 hydraulic cylinder 1, 8.6 wire rope 3, 8.7 slide seat, 9 fixing plate, 10 rope wedge, 11 tightening bolt. DETAILED DESCRIPTION

[0015] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction.

[0016] See also Figure 1-4 , the present invention provides the following technical solutions: Embodiment 1: A hidden single-cylinder dual-hanging-point synchronous lifting mechanism, comprising a gantry 1, both sides of the crossbeam of the gantry 1 are provided with through grooves, one of the through grooves is provided with a double fixed pulley 4, and the other through groove is provided with a single fixed pulley 7, a lifting cylinder 2 is provided inside a column of the gantry 1, the lifting cylinder 2 is on the same side as the double fixed pulley 4, the telescopic end of the lifting cylinder 2 is connected with a steel wire rope 1 3 and a steel wire rope 2 5, the ends of the steel wire rope 1 3 and the steel wire rope 2 5 are both connected with hooks, the steel wire rope 1 3 is located inside the gantry 1 after passing around the double fixed pulley 4, and the steel wire rope 2 5 is located inside the gantry 1 after passing around the double fixed pulley 4 and the single fixed pulley 7; the crossbeam of the gantry 1 is also provided with a leveling mechanism 6 that contacts the steel wire rope 2 5 and is used to adjust the position of the hook at its end; It can be understood that the two hooks are fixed to the telescopic ends of the lifting cylinder 2 by the steel wire rope 1 3 and the steel wire rope 2 5 respectively, and the lifting cylinder 2 is hidden in the column of the gantry 1. The lifting cylinder 2 is extended and retracted to drive the two lifting points to move, so as to achieve the purpose of fully synchronous lifting of the two lifting points, and utilize the original space of the column and the main beam, rarely occupying other external space, and having high space utilization rate; It should be noted that one of the hooks can be adjusted separately under the action of the leveling mechanism 6, that is, the hook position of the wire rope 2 5 is adjusted to adjust the center of gravity of the irregular hoisted object, ensuring that the two wire ropes are evenly stressed, and it also has the function of turning the heavy object over, achieving multiple goals at one stroke; Specifically, the leveling mechanism 6 includes a hydraulic cylinder 6.2, and a roller 6.1 is installed on the telescopic end of the hydraulic cylinder 6.2 through a wheel frame, that is, the hydraulic cylinder 6.2 drives the roller 6.1 to lift the wire rope 5, and the wire rope 5 drives the hook at its end to move upward.

[0017] Embodiment 2: Different from Embodiment 1, a pull rope mechanism 8 is further provided at the lower part of the crossbeam of the gantry 1, and the pull rope mechanism 8 includes a fixed frame 8.3, and movable pulleys 8.1 are symmetrically slidably matched on both sides of the fixed frame 8.3. The steel wire rope 1 3 passes around the double fixed pulleys 4 and then passes around the corresponding movable pulley 8.1, and the steel wire rope 2 5 passes around the double fixed pulleys 4 and the single fixed pulley 7 and then passes around the corresponding movable pulley 8.1. A steel wire rope 3 8.6 is connected between the two movable pulleys 8.1, and the fixed frame 8.3 is provided with a hydraulic cylinder 1 8.5 The telescopic end of the hydraulic cylinder 8.5 is provided with a roller 8.4 in contact with the wire rope 3 8.6; through the action of the hydraulic cylinder 8.5, the hydraulic cylinder 8.5 drives the roller 8.4 to press down the wire rope 3 8.6, and the wire rope 3 8.6 drives the two movable pulleys 8.1 to move relatively, the movable pulley 8.1 on the left drives the wire rope 3 to move, and the movable pulley 8.1 on the right drives the wire rope 25 to move, thereby adjusting the positions of the two hooks, making it easy to move the lifting point to the object to be lifted, avoiding human dragging, and being easy to use; Furthermore, both axial ends of the movable pulley 8.1 are connected to a slide seat 8.7 through bearings. The slide seat 8.7 is a groove-type structure, and the wire rope 8.6 is connected to the slide seat 8.7. The fixed frame 8.3 is a hollow frame structure. Both opposite side walls of the fixed frame 8.3 are provided with a slide groove 8.2 adapted to the slide seat 8.7. The slide seat 8.7 cooperates with the slide groove 8.2 to limit the sliding direction of the slide seat 8.7.

[0018] Embodiment 3: Different from Embodiment 1, the telescopic end of the lifting cylinder 2 is connected to the fixing plate 9 via a pin, and the wire rope 1 3 and the wire rope 2 5 are connected to the fixing plate 9 via a rope wedge 10 and a pin; In addition, the lifting cylinder 2 is hinged to the bottom of the column of the gantry 1 through an ear seat, and the column of the gantry 1 is threadedly connected with multiple tightening bolts 11 that interfere with the cylinder body of the lifting cylinder 2 and position it. The lifting cylinder 2 is positioned by multiple tightening bolts 11; the lower part of the two columns of the gantry 1 is provided with a walking mechanism, which cooperates with the track.

[0019] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the content of the present invention.

Claims

1. A concealed single-cylinder dual-hanging-point synchronous lifting mechanism, comprising a gantry (1), characterized in that: The crossbeam of the gantry (1) has through grooves on both sides, one of which is equipped with a double fixed pulley (4), and the other is equipped with a single fixed pulley (7). A lifting cylinder (2) is provided inside a column of the gantry (1), and the lifting cylinder (2) is on the same side as the double fixed pulley (4). The telescopic end of the lifting cylinder (2) is connected to a steel wire rope (3) and a steel wire rope (5), and the ends of the steel wire rope (3) and the steel wire rope (5) are both connected to hooks. After the steel wire rope (3) passes around the double fixed pulley (4), it is located inside the gantry (1), and after the steel wire rope (5) passes around the double fixed pulley (4) and the single fixed pulley (7), it is located inside the gantry (1). The crossbeam of the gantry (1) is also provided with a leveling mechanism (6) that contacts the steel wire rope (5) and is used to adjust the position of the hook at the end thereof.

2. According to claim 1, a hidden single-cylinder dual-hanging-point synchronous lifting mechanism is characterized in that: The lower part of the crossbeam of the gantry (1) is also provided with a rope pulling mechanism (8), which comprises a fixed frame (8.3), and movable pulleys (8.1) are symmetrically slidably matched on both sides of the fixed frame (8.3). The steel wire rope 1 (3) passes around the double fixed pulleys (4) and then passes around the corresponding movable pulleys (8.1). The steel wire rope 2 (5) passes around the double fixed pulleys (4) and the single fixed pulley (7) and then passes around the corresponding movable pulley (8.1). A steel wire rope 3 (8.6) is connected between the two movable pulleys (8.1). The fixed frame (8.3) is provided with a hydraulic cylinder 1 (8.5), and a roller 1 (8.4) in contact with the steel wire rope 3 (8.6) is provided at the telescopic end of the hydraulic cylinder 1 (8.5).

3. According to claim 2, a hidden single-cylinder dual-hanging-point synchronous lifting mechanism is characterized in that: Both shaft ends of the movable pulley (8.1) are connected to a slide seat (8.7) via bearings; the slide seat (8.7) is a groove-shaped structure; and a steel wire rope (8.6) is connected to the slide seat (8.7).

4. The hidden single-cylinder dual-hanging-point synchronous lifting mechanism according to claim 3 is characterized in that: The fixing frame (8.3) is a hollow frame structure, and two opposite side walls of the fixing frame (8.3) are provided with sliding grooves (8.2) adapted to the sliding seat (8.7).

5. The hidden single-cylinder dual-hanging-point synchronous lifting mechanism according to claim 1 is characterized in that: The leveling mechanism (6) comprises a second hydraulic cylinder (6.2), and a second roller (6.1) is mounted on the telescopic end of the second hydraulic cylinder (6.2) via a wheel frame.

6. The hidden single-cylinder dual-hanging-point synchronous lifting mechanism according to claim 1 is characterized in that: The telescopic end of the lifting cylinder (2) is connected to a fixed plate (9) via a pin, and the first steel wire rope (3) and the second steel wire rope (5) are both connected to the fixed plate (9) via a rope wedge (10) and a pin.

7. The hidden single-cylinder dual-hanging-point synchronous lifting mechanism according to claim 1 is characterized in that: The lifting cylinder (2) is hinged to the bottom of the column of the gantry (1) via an ear seat, and the column of the gantry (1) is threadedly connected with a plurality of tightening bolts (11) that abut against the cylinder body of the lifting cylinder (2) and position it.

8. The hidden single-cylinder dual-hanging-point synchronous lifting mechanism according to claim 1 is characterized in that: The lower parts of the two uprights of the gantry (1) are both provided with a walking mechanism, and the walking mechanism cooperates with the track.

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