Crankshaft linkage self-locking hoisting equipment

Abstract

The crankshaft linkage self-locking hoisting equipment comprises a bottom plate, two mounting plates are connected to one end of the upper surface of the bottom plate in a mirroring mode, mounting holes are formed in the tops of the two mounting plates, first pin shafts are mounted in the mounting holes, and a hoisting plate is rotationally connected to the first pin shafts; a movable wing plate assembly used for supporting truss ribs is installed on the bottom plate. The hoisting tool solves the problems that in the hoisting process, an existing hoisting tool is single in stress point and prone to unbalanced stress in the hoisting process, so that truss concrete is cracked and even fractured, and potential safety hazards exist.

Description

Technical Field

[0001] The invention relates to the field of truss hoisting, and in particular to a crankshaft-linked self-locking hoisting device. Background Art

[0002] In modern building construction, prefabricated concrete components are used more and more widely. Prefabricated floor slabs have become a common choice for high-rise buildings and residential buildings due to their advantages such as fast construction speed and stable quality. Prefabricated floor slabs usually use factory-prefabricated ribbed slabs, which are usually composed of upper chord slabs, truss bars, and lower chord slabs. Most of the pre-embedded lifting rings in the truss concrete on the market do not have lifting tools specifically for this structure, and a small number of them are lifting tools welded by the factory itself. The lifting tool has a single force point during the lifting process, and it is easy to be unbalanced during the lifting process, which may cause the truss concrete to crack or even break, posing a safety hazard. Summary of the invention

[0003] The purpose of the present invention is to overcome the existing defects and provide a crankshaft-linked self-locking lifting device, which can improve the stress points of the lifting device and the truss, ensure the balance during the lifting process, prevent the truss concrete from cracking or even breaking, and reduce safety hazards.

[0004] The technical solution to achieve the above-mentioned purpose is: a crankshaft linked self-locking lifting device, including a base plate, one end of the upper surface of the base plate is mirror-connected to two mounting plates, the tops of the two mounting plates are provided with mounting holes, a first pin is installed in the mounting hole, a hanging plate is rotatably connected to the first pin, and a movable wing plate assembly for supporting truss ribs is installed on the base plate.

[0005] Preferably, the movable wing plate assembly includes two arched mounting blocks, a movable plate, two first cranks, two second pins, four limiting rods, two third pins, two second cranks and two inner support mechanisms, two arched mounting blocks are installed in the middle part of the base plate, the movable plates are passed through the two arched mounting blocks, the upper surface of the movable plate is connected to two return-shaped limiting plates, the upper surface of the movable plate is intermittently provided with two first limiting grooves, the lower surface of the movable plate is intermittently provided with two second limiting grooves, the two arched mounting blocks are respectively slidably connected in the corresponding first limiting grooves, and the front end mirror image of the upper surface of the base plate is installed with a second pin and a The third pin shaft, the middle part of the upper surface of the base plate is also mirror-mounted with a second pin shaft and a third pin shaft, each of the second pin shafts is rotatably connected to one end of the first crank, each of the third pin shafts is rotatably connected to one end of the second crank, the ends of the two first cranks are rotatably connected to an internal support mechanism, the ends of the two second cranks are rotatably connected to another internal support mechanism, the front ends of the two first cranks and the two second cranks are respectively rotatably connected to a limit rod, the two limit rods located at the front end of the base plate pass through one of the return-shaped limit plates, and the two limit rods located in the middle part of the base plate pass through another return-shaped limit plate.

[0006] Preferably, the two internal support mechanisms are composed of the same parts, and the internal support mechanisms include a wing plate, two mounting frames, two fourth pins, two L-shaped connecting plates, and two fifth pins. The ends of the two first cranks and the two second cranks are rotatably connected to the corresponding fourth pins, and each of the fourth pins is also rotatably connected to one end of the corresponding L-shaped connecting plate, and the other end of each L-shaped connecting plate is rotatably connected to the fifth pin. The fifth pin is installed on the corresponding mounting frame, and the two mounting frames are intermittently connected to the inner side of the wing plate.

[0007] Preferably, the L-shaped connecting plate is located at the lower end of the corresponding first crank or the second crank.

[0008] Preferably, each of the second cranks is connected to a sleeve, each of the sleeves is rotatably connected to the corresponding third pin shaft, the bottoms of the two sleeves are in contact with the bottom plate, and the lower bottom surface of the second crank is horizontally aligned with the upper surface of the first crank.

[0009] Preferably, a hanging hole is provided on the top of the hanging plate.

[0010] Preferably, a third limiting groove is provided in the middle portion of the front end of the bottom plate.

[0011] The beneficial effect of the present invention is: by pushing the hanging plate, the hanging plate drives the movable plate to move inward. According to the principle of crank transmission, the two wing plates are simultaneously opened to form a plane with the horse stool truss reinforcement. The wing plates drag the truss reinforcements on both sides for lifting. At this time, the force points do not act on the truss concrete, so the truss concrete cracking during the lifting process is avoided. The two wing plates and the horse stool reinforcement have the same angle, and there are multiple force points during the lifting process, so that the force distribution of the device during the lifting process is more uniform and stable, reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a stereogram of the present invention; Figure 2 is an exploded view of the present invention; Figure 3 This is a front view of the present invention after the hanging plate is hidden; Figure 4 is a schematic diagram of the present invention in which a wing panel is hidden; Figure 5 It is a schematic diagram of hiding another wing panel according to the present invention.

[0013] In the figure: 1, bottom plate; 2, mounting plate; 3, first pin; 4, hanging plate; 5, arched mounting block; 6, movable plate; 7, first crank; 8, second pin; 9, limiting rod; 10, return limiting plate; 11, first limiting groove; 12, third pin; 13, second crank; 14, wing plate; 15, mounting frame; 16, fourth pin; 17, L-shaped connecting plate; 18, fifth pin; 19, second limiting groove; 20, bushing; 21, third limiting groove; 22, hanging hole. DETAILED DESCRIPTION

[0014] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] like Figure 1-5 As shown, a crankshaft linkage self-locking lifting device includes a base plate 1, two mounting plates 2, a first pin shaft 3, a hanging plate 4 and a movable wing plate assembly.

[0017] Specifically, two mounting plates 2 are mirror-connected to one end of the upper surface of the base plate 1. Mounting holes are provided on the tops of the two mounting plates 2. A first pin shaft 3 is installed in the mounting hole. The first pin shaft 3 serves to support the hanging plate 4. The hanging plate 4 is rotatably connected to the first pin shaft 3. A movable wing plate assembly for supporting the truss ribs is installed on the base plate 1.

[0018] Specifically, the movable wing plate assembly includes two arched mounting blocks 5, a movable plate 6, two first cranks 7, two second pins 8, four limiting rods 9, two third pins 12, two second cranks 13 and two inner support mechanisms. Two arched mounting blocks 5 are installed in the middle part of the base plate 1. The movable plates 6 pass through the two arched mounting blocks 5. The upper surface of the movable plate 6 is connected to two circular limiting plates 10. The upper surface of the movable plate 6 is intermittently provided with two first limiting grooves 11, and the lower surface of the movable plate 6 is intermittently provided with two second limiting grooves 19. The two arched mounting blocks 5 are respectively slidably connected in the corresponding first limiting grooves 11. A second pin 8 and a third pin 12 are mirror-mounted at the front end of the upper surface of the base plate 1. A second pin 8 and a third pin 12 are also mirror-mounted in the middle part of the upper surface of the base plate 1. One end of the first crank 7 is rotatably connected to each second pin 8, and one end of the third pin 12 is rotatably connected to each second pin 8. One end is connected to the second crank 13, the ends of the two first cranks 7 are rotatably connected to an internal support mechanism, the ends of the two second cranks 13 are rotatably connected to another internal support mechanism, the front ends of the two first cranks 7 and the two second cranks 13 are respectively rotatably connected to a limit rod 9, the two limit rods 9 located at the front end of the base plate 1 pass through a circular limit plate 10, and the two limit rods 9 located in the middle part of the base plate 1 pass through another circular limit plate 10, the movable plate 6 slides back and forth in the two arched mounting blocks 5, and the two circular limit plates 10 of the movable plate 6 drive the limit rods 9 installed on the two first cranks 7 and the two second cranks 13 to make relative or divergent movements, and each limit rod 9 can drive the two first cranks 7 and the two second cranks 13 to rotate, because the other ends of the two first cranks 7 and the two second cranks 13 are connected to the corresponding internal support mechanism, so that the two internal support mechanisms can expand and contract, which is convenient for supporting the horse stool reinforcement.

[0019] Specifically, the two internal support mechanisms are composed of the same parts, and the internal support mechanisms include a wing plate 14, two mounting frames 15, two fourth pins 16, two L-shaped connecting plates 17, and two fifth pins 18. The ends of the two first cranks 7 and the two second cranks 13 are rotatably connected with the corresponding fourth pins 16, and each fourth pin 16 is also rotatably connected with one end of the corresponding L-shaped connecting plate 17, and the other end of each L-shaped connecting plate 17 is rotatably connected with the fifth pin 18. The fifth pin 18 is installed on the corresponding mounting frame 15, and the two mounting frames 15 are intermittently connected to the inner side of the wing plate 14. The wing plate 14 can rotate freely along the central axis direction of the fifth pin 18, so that it can adapt to horse stool reinforcements of different angles.

[0020] Specifically, the L-shaped connecting plate 17 is located at the lower end of the corresponding first crank 7 or second crank 13; each second crank 13 is connected to a sleeve 20, each sleeve 20 is rotatably connected to the corresponding third pin 12, the bottom of the two sleeves 20 is in contact with the base plate 1, and the lower bottom surface of the second crank 13 is horizontally aligned with the upper surface of the first crank 7.

[0021] Specifically, a hanging hole 22 is opened on the top of the hanging plate 4, and the hanging hole 22 is used to hang the hanging point of the crane. A third limiting groove 21 is opened in the middle part of the front end of the base plate 1, and the third limiting groove 21 can be used to limit the rotation angle of the hanging plate 4, thereby limiting the unfolding distance of the two wing panels 14.

[0022] Working principle: when preparing to lift the truss concrete, first place the device in the middle part of the truss reinforcement, and then push the hanging plate 4 inward, at this time the hanging plate 4 drives the movable plate 6 to move inward, according to the principle of crank transmission, the movable plate 6 respectively drives the two first cranks 7 to rotate around the corresponding second pin 8, and at the same time the movable plate 6 respectively drives the two second cranks 13 to rotate around the corresponding third pin 12, so that the two first cranks 7 drive one wing plate 14 to move outward, and the two second cranks 13 drive the other wing plate 14 to move outward, and the two wing plates 14 are simultaneously stretched open to form a plane with the horse stool reinforcement of the truss reinforcement, and the wing plates 14 drag the truss reinforcements on both sides for lifting. At this time, the force point does not act on the truss concrete, so the truss concrete cracking during the lifting process is avoided. The angles of the two wing plates 14 and the horse stool reinforcement are the same, so there are multiple force points during the lifting process, so that the force distribution of the device during the lifting process is more uniform and stable, avoiding the safety hazards caused by uneven force.

[0023] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crankshaft linkage self-locking lifting device, characterized in that: The invention comprises a base plate (1), wherein one end of the upper surface of the base plate (1) is mirror-connected to two mounting plates (2), the tops of the two mounting plates (2) are provided with mounting holes, a first pin shaft (3) is installed in the mounting hole, a hanging plate (4) is rotatably connected to the first pin shaft (3), and a movable wing plate assembly for supporting truss ribs is installed on the base plate (1).

2. The crankshaft linkage self-locking lifting equipment according to claim 1, characterized in that: The movable wing assembly comprises two arched mounting blocks (5), a movable plate (6), two first cranks (7), two second pins (8), four limiting rods (9), two third pins (12), two second cranks (13) and two inner support mechanisms. The middle part of the base plate (1) is provided with two arched mounting blocks (5), the movable plate (6) passes through the two arched mounting blocks (5), the upper surface of the movable plate (6) is connected to two circular limiting plates (10), the upper surface of the movable plate (6) is provided with two first limiting grooves (11) at intervals, the lower surface of the movable plate (6) is provided with two second limiting grooves (19) at intervals, the two arched mounting blocks (5) are respectively slidably connected in the corresponding first limiting grooves (11), and the front end of the upper surface of the base plate (1) is provided with a second pin (8) and a A third pin shaft (12), a second pin shaft (8) and a third pin shaft (12) are also mirror-mounted on the middle part of the upper surface of the base plate (1), each of the second pin shafts (8) is rotatably connected to one end of the first crank (7), and each of the third pin shafts (12) is rotatably connected to one end of the second crank (13), the ends of the two first cranks (7) are rotatably connected to one of the inner support mechanisms, and the ends of the two second cranks (13) are rotatably connected to another of the inner support mechanisms, and the front ends of the two first cranks (7) and the two second cranks (13) are rotatably connected to one of the limit rods (9), the two limit rods (9) located at the front end of the base plate (1) pass through one of the return-shaped limit plates (10), and the two limit rods (9) located in the middle part of the base plate (1) pass through another of the return-shaped limit plates (10).

3. The crankshaft linkage self-locking lifting equipment according to claim 2, characterized in that: The two inner support mechanisms are composed of the same parts, and the inner support mechanisms include a wing plate (14), two mounting frames (15), two fourth pins (16), two L-shaped connecting plates (17), and two fifth pins (18). The ends of the two first cranks (7) and the two second cranks (13) are rotatably connected to the corresponding fourth pins (16). Each of the fourth pins (16) is also rotatably connected to one end of the corresponding L-shaped connecting plate (17). The other end of each of the L-shaped connecting plates (17) is rotatably connected to the fifth pin (18). The fifth pin (18) is mounted on the corresponding mounting frame (15). The two mounting frames (15) are intermittently connected to the inner side of the wing plate (14).

4. The crankshaft linkage self-locking lifting equipment according to claim 3 is characterized in that: The L-shaped connecting plate (17) is located at the lower end of the corresponding first crank (7) or second crank (13).

5. The crankshaft linkage self-locking lifting equipment according to claim 2, characterized in that: Each of the second cranks (13) is connected to a shaft sleeve (20), and each of the shaft sleeves (20) is rotatably connected to the corresponding third pin shaft (12). The bottoms of the two shaft sleeves (20) are in contact with the bottom plate (1), and the lower bottom surface of the second crank (13) is horizontally aligned with the upper surface of the first crank (7).

6. The crankshaft linkage self-locking lifting equipment according to claim 1, characterized in that: A hanging hole (22) is provided on the top of the hanging plate (4).

7. The crankshaft linkage self-locking lifting equipment according to claim 1, characterized in that: A third limiting groove (21) is provided in the middle portion of the front end of the bottom plate (1).

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