Movable counterweight type single-arm crane

Abstract

During hoisting operation, a first supporting leg is longer than a second supporting leg, the first supporting leg serves as a stress supporting leg, and the first supporting leg is fixed at a floor structure so as to ensure that the whole device is balanced and stable; during non-hoisting operation, the length of the second supporting leg is larger than that of the second supporting leg, and the second supporting leg serves as a stress supporting leg, so that the device can be conveniently moved; a limiter is arranged at the picking-out end of the first cantilever suspender, so that danger caused by the fact that the ascending height of a hoisted object exceeds a preset height during hoisting can be effectively prevented; the second fixed pulley is matched with the safety rope and the falling protector, if the power rope is broken, the safety rope can instantly pull the hoisted object, the hoisted object is effectively prevented from falling, and the safety coefficient is high; wherein the first cantilever suspender and the second cantilever suspender are large in length, and can be used for placing a plurality of balancing weights, so that the hoisting requirement of large weight can be met, the relatively complicated external facade hoisting working condition can be coped, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the field of building facade hoisting, in particular to a movable counterweight single-arm crane. Background Art

[0002] In the engineering projects of large public buildings and high-end residential buildings, due to their aesthetic effects, more and more projects adopt curtain wall enclosing structures for the facade. According to the conventional construction deployment, in order to save the overall construction period and reduce the rental costs of large machinery and turnover materials, the curtain wall is generally arranged to be constructed by hanging baskets after the external scaffold is demolished, and the tower crane will also be demolished after the external scaffold is demolished. At this time, for the hoisting construction of the relatively heavy unit-type panels and glass on the curtain wall facade, a single-arm crane device is often required to hoist the materials to the construction operation position to assist the workers in construction.

[0003] For example, a unit curtain wall hoisting trolley disclosed in the utility model patent with the application number 202321423839.7 is mainly for unit curtain wall hoisting, and has the advantage of quickly changing the hoisting center of gravity to improve stability. It mainly solves the problem that the existing hoisting trolley can only improve the stability during hoisting by adding counterweight blocks; the unit curtain wall hoisting trolley in the prior art mainly solves the problem of poor hoisting stability by quickly changing the hoisting center of gravity, but its hoisting weight capacity is small, the boom length is limited, it cannot meet the hoisting operations with complex overhanging on the structural facade and large hoisting distances, and it fails to realize the anti-falling function during hoisting. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a movable counterweight single-arm crane, which aims to solve the technical problems in the prior art such as small hoisting distance, small hoisting weight, inability to meet complex overhanging operations, and failure to realize the anti-falling function during hoisting of the unit curtain wall hoisting device.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a movable counterweight single-arm crane, which comprises a base frame. The base frame is rectangular. First legs for fixing are arranged on the side surfaces of the corners of the base frame and the rear side surfaces of a group of long sides; a first cross beam is arranged in the middle inside the base frame, a second cross beam is arranged at the rear side inside the base frame, first support rods are arranged at intervals between the first cross beam and the second cross beam, and a hoist is arranged on the upper end surface of the first support rods; second support rods are arranged at intervals inside the base frame and at the rear side of the second cross beam, and counterweight blocks are arranged on the upper end surfaces of the second support rods; the hoisting assembly comprises a first boom rod, a second boom rod, a third boom rod and a first fixed pulley; two first boom rods are provided. One end of each first boom rod is arranged on the upper end surface of the front corner of the base frame, and the other end is obliquely upward. A connecting rod is arranged between the protruding ends of the two first boom rods. The first boom rods, the connecting rod and the short side at the front side of the base frame are arranged in a trapezoidal shape; one end of the second boom rod is arranged on the upper end surface of the end of the first cross beam, and the other end is arranged on the upper end surface of the first boom rod close to the protruding end; one end of the third boom rod is arranged at the end of the short side at the front side of the base frame, and the other end is arranged on the lower end surface of the middle of the second boom rod; the first fixed pulley is arranged at the protruding end of the first boom rod, a power rope is arranged on the first fixed pulley, one end of the power rope is arranged on the hoist, and the other end is arranged with a hook for connecting an object to be hoisted.

[0007] Preferably, second legs for moving are arranged on the lower end surfaces of a group of long sides of the base frame and close to the first legs, and rollers are arranged at the bottoms of the second legs.

[0008] Preferably, a T-shaped beam is arranged at the front side inside the base frame. The two ends of the horizontal part of the T-shaped beam are fixedly connected with the long sides of the base frame, and the vertical part of the T-shaped beam is fixedly connected with the short side at the front side of the base frame.

[0009] Preferably, an insurance auxiliary assembly is further included. The insurance auxiliary assembly comprises a second fixed pulley and a safety rope; the second fixed pulley is arranged at the protruding end of the first cantilever rod, the safety rope is arranged on the second fixed pulley, one end of the safety rope is arranged on the horizontal part of the T-shaped beam, the other end is connected with the object to be hoisted, and an anti-falling device is further arranged on the safety rope.

[0010] Preferably, ear plates for installing the first fixed pulley and the second fixed pulley are arranged at the protruding ends of the first boom rods, and both the first fixed pulley and the second fixed pulley are rotatably connected with the ear plates.

[0011] Preferably, an anti-jump device is further included for preventing the power rope or the safety rope from slipping out of the pulley groove; the anti-jump device comprises an anti-jump plate and an anti-jump rod. The anti-jump plates are arranged on the outer side surfaces of the ear plates, and the anti-jump rods are connected between the anti-jump plates.

[0012] Preferably, the insurance auxiliary assembly further includes a stopper, and the stopper is arranged on the lower end surface of the protruding end of the first cantilever rod for limiting the upward height of the hoisted object.

[0013] Preferably, the second leg includes a fixed section and an adjustment section. The adjustment section is inserted and fixed to the fixed section. The fixed section is provided with a plurality of adjustment holes for adjusting the depth of insertion of the adjustment section into the fixed section.

[0014] Preferably, at least two reinforcing bars are provided between the two first boom rods. The upper end surface of the second support rod is provided with a counterweight insertion rod for fixing the counterweight.

[0015] Preferably, the first boom rod is hinged and fixed to the base frame. The two ends of the second boom rod are respectively hinged and fixed to the first boom rod and the first cross beam. The two ends of the third boom rod are respectively hinged and fixed to the second boom rod and the base frame.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1) For the movable counterweight single-arm crane provided by the present utility model, during the hoisting operation, the length of the first leg is greater than that of the second leg. As the stressed leg, the first leg is fixed at the floor structure to ensure the balance and stability of the overall device; during non-hoisting operations, the length of the second leg is greater than that of the second leg. As the stressed leg, the device can be conveniently moved.

[0018] 2) For the movable counterweight single-arm crane provided by the present utility model, a limiter is provided at the protruding end of the first cantilever boom, which can effectively prevent the hoisted object from rising beyond the predetermined height during hoisting and causing danger; a second fixed pulley is provided at the protruding end of the first cantilever boom, cooperating with the safety rope and the anti-falling device. If the power rope breaks, the safety rope can instantly hold the hoisted object, effectively preventing the hoisted object from falling, and the safety factor is high.

[0019] 3) The movable counterweight single-arm crane provided by the present utility model includes a first cantilever boom, a second cantilever boom and a third cantilever boom. Among them, the first cantilever boom and the second cantilever boom are long and can place more counterweights, which can meet the hoisting requirements of larger weights, can cope with more complex external wall hoisting conditions, and have a wide range of applications; and the main structure can be fixedly assembled by steel components such as square steel through welding, bolts, ear plate hinges, etc. The materials are easily available, and the disassembly and assembly process is simple and convenient, and can be conveniently disassembled and assembled on site, with strong flexibility and turnover.

[0020] Other features and advantages of the present utility model will be described in the subsequent specification, and will be partially obvious from the specification, or will be understood by implementing the present utility model. The main purpose and other advantages of the present utility model can be achieved and obtained through the solutions specifically pointed out in the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following further describes the present utility model in detail with reference to the drawings.

[0022] Figure 1 This is the front view of the present utility model.

[0023] Figure 2 This is the top view of the present utility model.

[0024] Figure 3 This is the enlarged view of the first fixed pulley or the second fixed pulley of the present utility model.

[0025] Reference numerals: 1 - base frame, 11 - first cross beam, 12 - second cross beam, 13 - first support rod, 14 - second support rod, 15 - T-shaped beam, 16 - winch, 2 - hoisting assembly, 21 - first boom rod, 22 - second boom rod, 23 - third boom rod, 24 - first fixed pulley, 25 - connecting rod, 26 - reinforcing rod, 3 - first leg, 31 - fixed section, 32 - adjusting section, 4 - counterweight, 5 - power rope, 6 - second leg, 61 - roller, 71 - second fixed pulley, 72 - safety rope, 73 - limiter, 8 - ear plate, 9 - anti-jump device, 91 - anti-jump board, 92 - anti-jump rod, 10 - counterweight insertion rod. Detailed implementation manners

[0026] The technical solution of the present utility model will be described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present utility model, and cannot be construed as a limitation of the technical solution of the present utility model.

[0027] Refer to Figure 1-2 , this embodiment provides a movable counterweight single-arm crane, including a base frame 1. The base frame 1 is rectangular. First legs 3 for fixing are provided on the side surfaces of the corners and the rear side surfaces of a set of long sides of the base frame 1; on the lower end surfaces of a set of long sides of the base frame 1, second legs 6 for moving are provided near the first legs 3. Rollers 61 are provided at the bottom ends of the second legs 6; the second legs 6 include a fixed section 31 and an adjusting section 32. The adjusting section 32 is inserted and fixed with the fixed section 31. Multiple adjusting holes are provided on the fixed section 31 for adjusting the depth of insertion of the adjusting section 32 into the fixed section 31;

[0028] A first cross beam 11 is arranged in the middle inside the base frame 1, and a second cross beam 12 is arranged at the rear side inside the base frame 1. First support rods 13 are arranged at intervals between the first cross beam 11 and the second cross beam 12, and a winch 16 is arranged on the upper end surface of the first support rod 13. A T-shaped beam 15 is arranged at the front side inside the base frame 1. Both ends of the horizontal part of the T-shaped beam 15 are fixedly connected to the long sides of the base frame 1, and the vertical part of the T-shaped beam 15 is fixedly connected to the short side at the front side of the base frame 1. Second support rods 14 are arranged at intervals at the rear side of the second cross beam 12 inside the base frame 1. A counterweight 4 is arranged on the upper end surface of the second support rod 14. The counterweight 4 is made of concrete, with a counterweight specification of 400*200*175mm, 25KG for each piece, a total of 64 pieces, totaling 1600KG. A counterweight insertion rod 10 is arranged on the upper end surface of the second support rod 14 for fixing the counterweight 4. The hoisting assembly 2 includes a first boom rod 21, a second boom rod 22, a third boom rod 23 and a first fixed pulley 24. Two first boom rods 21 are arranged. One end of the first boom rod 21 is arranged on the upper end surface of the front corner of the base frame 1, and the other end projects obliquely upward. A connecting rod 25 is arranged between the projecting ends of the two first boom rods 21. The first boom rod 21, the connecting rod 25 and the short side at the front side of the base frame 1 are arranged in a trapezoidal shape. At least two reinforcing rods 26 are arranged between the two first boom rods 21 to enhance the stability of the first boom rod 21. One end of the second boom rod 22 is arranged on the upper end surface of the end of the first cross beam 11, and the other end is arranged on the upper end surface of the first boom rod 21 near the projecting end. One end of the third boom rod 23 is arranged at the end of the short side at the front side of the base frame 1, and the other end is arranged on the lower end surface of the middle of the second boom rod 22. The first fixed pulley 24 is arranged at the projecting end of the first boom rod 21. A power rope 5 is arranged on the first fixed pulley 24. One end of the power rope 5 is arranged on the winch 16, and the other end is provided with a hook for connecting the object to be hoisted.

[0029] Further, this embodiment further includes an insurance auxiliary assembly. The insurance auxiliary assembly includes a second fixed pulley 71 and a safety rope 72. The second fixed pulley 71 is arranged at the projecting end of the first cantilever rod, the safety rope 72 is arranged on the second fixed pulley 71. One end of the safety rope 72 is arranged on the horizontal part of the T-shaped beam 15, and the other end is connected to the object to be hoisted. An anti-falling device is also arranged on the safety rope 72. The insurance auxiliary assembly further includes a limiter 73. The limiter 73 is arranged on the lower end surface of the projecting end of the first cantilever rod for limiting the upward height of the hoisted object.

[0030] Refer to Figure 3, at the protruding end of the first boom 21, there is an ear plate 8 for installing the first fixed pulley 24 and the second fixed pulley 71. Both the first fixed pulley 24 and the second fixed pulley 71 are rotatably connected to the ear plate 8; further includes an anti-jump device 9 for preventing the power rope 5 or the safety rope 72 from slipping out of the pulley groove; the anti-jump device 9 includes an anti-jump plate 91 and an anti-jump rod 92. The anti-jump plate 91 is arranged on the outer side of the ear plate 8, and the anti-jump rod 92 is connected between the anti-jump plates 91.

[0031] Furthermore, the first boom 21 is hinged and fixed to the base frame, and both ends of the second boom 22 are respectively hinged and fixed to the first boom 21 and the first cross beam 11. Both ends of the third boom 23 are respectively hinged and fixed to the second boom 22 and the base frame.

[0032] Furthermore, the working principle of the present utility model: First, assemble the present utility model, adjust the length of the first leg 3 to make it exceed the length of the second leg 6. At this time, the first leg 3 is the stressed leg and supports the base frame 1. According to the lifting weight, place the required counterweight blocks 4 on the counterweight insertion rod 10 of the second support rod 14; install the winch 16, the power rope 5 and the safety rope 72. Fix the safety rope 72 on the T-shaped beam 15, and install a fall arrester with a rated load of 4 tons and a wire winding length of 8.5 meters on the safety rope 72. The safety rope 72 will freely stretch with the hanging object and be in a semi-tensioned state. In case of a falling accident, the pulling speed of the safety rope 72 will be significantly increased, and the internal locking system will automatically lock, so that the pulling distance of the safety rope 72 does not exceed 0.063 meters, and it will automatically resume work after the load is removed; after the work is completed, the safety rope 72 will automatically retract into the device. During hoisting, pull out the lower hook of the fall arrester and hook the object to be hoisted together with the power rope 5. If the power rope 5 accidentally breaks, the fall arrester can instantly hold the plate and prevent the plate from falling; after the hoisting is completed, remove the counterweight blocks 4, adjust the length of the first leg 3 to make the length of the first leg 3 less than the length of the second leg 6. At this time, the second leg 6 is the stressed leg, and the whole device can be moved to the next hoisting position by using the rollers 61.

[0033] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A movable counterweight single-arm crane, characterized in that: The invention comprises a base frame (1) and a lifting assembly (2); the base frame (1) is rectangular, and the corner side surfaces and the rear side surfaces of a group of long sides of the base frame (1) are provided with first legs (3) for fixing; A first crossbeam (11) is arranged in the middle of the base frame (1), a second crossbeam (12) is arranged at the rear side of the base frame (1), a first support rod (13) is arranged at intervals between the first crossbeam (11) and the second crossbeam (12), and a winch (16) is arranged on the upper end surface of the first support rod (13); second support rods (14) are arranged at intervals inside the base frame (1) and at the rear side of the second crossbeam (12), and a counterweight (4) is arranged on the upper end surface of the second support rod (14); The lifting assembly (2) comprises a first lifting arm (21), a second lifting arm (22), a third lifting arm (23) and a first fixed pulley (24); Two first boom rods (21) are provided, one end of the first boom rod (21) is arranged on the upper end surface of the front corner of the base frame (1), and the other end is inclined upwardly extended, a connecting rod (25) is arranged between the extended ends of the two first boom rods (21), and the short side of the front side of the first boom rod (21), the connecting rod (25) and the base frame (1) are arranged in a trapezoidal shape; one end of the second boom rod (22) is arranged on the upper end surface of the end of the first cross beam (11), and the other end is arranged on the upper end surface of the first boom rod (21) close to the extended end; one end of the third boom rod (23) is arranged on the short side end of the front side of the base frame (1), and the other end is arranged on the lower end surface of the middle part of the second boom rod (22); a first fixed pulley (24) is arranged on the extended end of the first boom rod (21), and the first fixed pulley (24) is provided with a power rope (5), one end of the power rope (5) is arranged on the hoist (16), and the other end is provided with a hook for connecting to the object to be hoisted.

2. A movable counterweight single-arm crane as claimed in claim 1, characterized in that: A second leg (6) for movement is arranged on the lower end surface of a group of long sides of the base frame (1) near the first leg (3), and a roller (61) is arranged at the bottom end of the second leg (6).

3. A movable counterweight single-arm crane as claimed in claim 2, characterized in that: A T-shaped beam (15) is arranged at the front side of the base frame (1), the two ends of the transverse portion of the T-shaped beam (15) are fixedly connected to the long sides of the base frame (1), and the vertical portion of the T-shaped beam (15) is fixedly connected to the short side of the front side of the base frame (1).

4. A movable counterweight single-arm crane as claimed in claim 3, characterized in that: The utility model also comprises a safety auxiliary component, which comprises a second fixed pulley (71) and a safety rope (72); the second fixed pulley (71) is arranged at the extended end of the first cantilever rod, the safety rope (72) is arranged on the second fixed pulley (71), one end of the safety rope (72) is arranged on the transverse part of the T-beam (15), and the other end is connected to the object to be hoisted, and a fall arrester is also arranged on the safety rope (72).

5. A movable counterweight single-arm crane as claimed in claim 2, characterized in that: The extended end of the first boom rod (21) is provided with an ear plate (8) for mounting the first fixed pulley (24) and the second fixed pulley (71), and the first fixed pulley (24) and the second fixed pulley (71) are both rotatably connected to the ear plate (8).

6. A movable counterweight single-arm crane as claimed in claim 5, characterized in that: It also includes an anti-jump device (9) for preventing the power rope (5) or the safety rope (72) from escaping from the pulley groove; the anti-jump device (9) includes an anti-jump board (91) and an anti-jump rod (92); the anti-jump board (91) is arranged on the outer side of the ear plate (8), and the anti-jump rod (92) is connected between the anti-jump boards (91).

7. A movable counterweight single-arm crane as claimed in claim 4, characterized in that: The insurance auxiliary component also includes a limiter (73), which is arranged on the lower end surface of the extended end of the first cantilever rod and is used to limit the upward height of the hoisted object.

8. The movable counterweight single-arm crane according to claim 2, characterized in that: The second leg (6) comprises a fixed section (31) and an adjustment section (32), the adjustment section (32) being plugged and fixed to the fixed section (31), and the fixed section (31) being provided with a plurality of adjustment holes for adjusting the depth of the adjustment section (32) inserted into the fixed section (31).

9. A movable counterweight single-arm crane as claimed in claim 2, characterized in that: At least two reinforcing rods (26) are arranged between the two first suspension arm rods (21), and a counterweight insertion rod (10) is arranged on the upper end surface of the second support rod (14) for fixing the counterweight block (4).

10. The movable counterweight single-arm crane according to claim 2, characterized in that: The first boom rod (21) is hingedly fixed to the base frame, two ends of the second boom rod (22) are respectively hingedly fixed to the first boom rod (21) and the first crossbeam (11), and two ends of the third boom rod (23) are respectively hingedly fixed to the second boom rod (22) and the base frame.

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