Cantilever crane

Abstract

The invention discloses a cantilever crane which comprises a fixing seat, the fixing seat is fixedly installed on a concrete supporting column of a building, a cantilever beam capable of horizontally rotating is arranged on the fixing seat and connected with the fixing seat through a pin shaft, the cantilever beam and the pin shaft are fixed through a bolt, a steel pipe frame is fixed to the lower end of the pin shaft, and the steel pipe frame is fixedly connected with the fixing seat. The lower end of the steel pipe frame is connected with a second fixing base through a rotating disc, plug pin holes are evenly formed in the rotating disc and the second fixing base, the rotating disc and the second fixing base are fixed through plug pins, the second fixing base and a building are fixedly installed, and a manual rotating rod is welded to the lower end of the side face of the steel pipe frame. An electric hoist is fixed to the lower side of the end, away from the end connected with the fixing base, of the cantilever beam through a bolt, the cantilever beam can be directly fixed to a concrete column, for a building without an elevator, goods can be directly hoisted to the top of the building and can also be hoisted to a window opening of each floor, and particularly for a certain number of heavy goods, use is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of cranes, in particular to a cantilever crane. Background Art

[0002] A cantilever crane is composed of an electric hoist, a cantilever beam, a support base and other components. The lower end of the column of the support base is fixed to the concrete foundation by anchor bolts. The column needs to bear the entire weight of the goods. For example, in the patent authorization number CN204675696U, the support base is fixed to the ground by bolts, which will not only damage the floor, but also the base structure is large and occupies a large space. The device structure is relatively bulky and the use effect is poor. For some smaller windows, the goods cannot be rotated into the house when the boom rotates. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a cantilever crane that can be directly fixed on a concrete column. For buildings without elevators, it can not only solve the problem of directly lifting goods to the top of the building, but also lift the goods to the windows of each floor. Especially for a certain amount of heavier goods, it is more convenient to use and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cantilever crane, comprising a fixed seat, the fixed seat is fixedly installed on a concrete pillar of a building, a cantilever beam that can rotate horizontally is arranged on the fixed seat, the cantilever beam is connected to the fixed seat through a pin shaft, and the cantilever beam and the pin shaft are fixed by bolts, and a steel pipe frame is fixed to the lower end of the pin shaft, the lower end of the steel pipe frame is connected to a fixed seat 2 through a turntable, pin holes are evenly arranged on the turntable and the fixed seat 2, and the turntable and the fixed seat 2 are fixed by pins, the fixed seat 2 is fixedly installed on the building, and a manual rotating rod is welded to the lower end of the side of the steel pipe frame, and an electric hoist is fixed to the lower side of the cantilever beam away from the fixed seat by bolts.

[0005] Furthermore, the fixing base is fixed to the building by expansion bolts, and the fixing base includes a mounting plate installed on the building, and two horizontal ear plates installed with the cantilever beam are welded on one side of the mounting plate, and triangular reinforcing plates are evenly welded between each horizontal ear plate and the mounting plate, and a through hole corresponding to the pin shaft is provided on the horizontal ear plate, and a wear-resistant pad is welded at the connection between the horizontal ear plate and the cantilever beam.

[0006] Furthermore, the cantilever beam includes an I-beam support arm, one end of the I-beam support arm is provided with a connecting pipe for the pin shaft to pass through, two protective plates are fixed to the outer sides of both ends of the connecting pipe, and the protective plates are fixed to the I-beam support arm.

[0007] Furthermore, a protective shell for protecting the electric hoist is fixed by bolts to one end of the cantilever beam away from the connection with the fixing seat, and the protective shell is a U-shaped structure.

[0008] Furthermore, the fixing seat 2 is a T-shaped structure, and a reinforcement plate is welded between the horizontal plate and the vertical plate of the fixing seat 2, and the vertical plate of the fixing seat 2 is fixed to the building by expansion bolts.

[0009] Compared with the prior art, the beneficial effects of the present invention are: the cantilever crane has the following advantages:

[0010] 1. The present invention can fix the crane to the concrete column of the building through the fixing seat and the fixing seat 2, so that the installation of the device is more convenient, and the pin shaft, the cantilever beam and the steel pipe frame are fixedly connected by bolts, so that the steel pipe frame can be driven to rotate by rotating the manual rotating rod, and the cantilever beam can be driven to rotate by rotating the steel pipe frame, so that the electric hoist and the goods on the cantilever beam can be moved to the platform.

[0011] 2. The present invention prevents the steel pipe frame from tilting when the cantilever beam rotates by rotatably connecting the second fixing seat and the steel pipe frame. The second fixing seat positions the lower end of the steel pipe frame.

[0012] 3. The present invention can be directly fixed on a concrete column. For buildings without elevators, it not only solves the problem of directly lifting goods to the top of the building, but also can lift goods to the windows of each floor. It is more convenient to use, especially for a certain amount of heavier goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the side structure of the present invention;

[0015] Figure 3 It is a schematic diagram of the decomposition structure of the present invention;

[0016] Figure 4 This is a schematic diagram of the structure of the fixing seat of the present invention;

[0017] Figure 5 It is a schematic diagram of the cantilever beam structure of the present invention;

[0018] Figure 6 It is a structural schematic diagram of the steel pipe rack and the fixing seat of the present invention.

[0019] In the figure: 1 fixed seat, 11 mounting plate, 12 horizontal ear plate, 13 triangular reinforcement plate, 14 wear-resistant pad, 2 pin shaft, 3 steel pipe frame, 4 fixed seat II, 5 manual rotating rod, 6 building, 7 cantilever beam, 71 I-beam support arm, 72 connecting pipe, 73 protective plate, 8 protective shell, 9 electric hoist, 10 turntable. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-6The present invention provides a technical solution: a cantilever crane, comprising a fixed seat 1, the fixed seat 1 is fixedly installed on a concrete pillar of a building 6, a cantilever beam 7 that can rotate horizontally is arranged on the fixed seat 1, the cantilever beam 7 is connected to the fixed seat 1 through a pin shaft 2, and the cantilever beam 7 and the pin shaft 2 are fixed by bolts, and a steel pipe frame 3 is fixed to the lower end of the pin shaft 2, and the lower end of the steel pipe frame 3 is connected to a fixed seat 2 4 through a turntable 10, pin holes are evenly arranged on the turntable 10 and the fixed seat 2 4, and the turntable 10 and the fixed seat 2 4 are positioned by pins, the fixed seat 2 4 is fixedly installed with the building 6, and a hand is welded at the lower end of the side of the steel pipe frame 3 The manual rotating rod 5 is provided, and an electric hoist 9 is fixed to the lower side of the end of the cantilever beam 7 away from the connection with the fixed seat 1 by bolts. The crane can be fixed to the concrete column of the building 6 by the fixed seat 1 and the fixed seat 2 4, so that the installation of the device is more convenient, and the pin shaft 2, the cantilever beam 7 and the steel pipe frame 3 are fixedly connected by bolts, so that the steel pipe frame 3 can be driven to rotate by rotating the manual rotating rod 5, and the cantilever beam 7 can be driven to rotate by rotating the steel pipe frame 3, so that the electric hoist and the goods on the cantilever beam 7 are moved to the platform, and the fixed seat 1 is fixed to the building 6 by expansion bolts, and the fixed seat 1 includes a mounting plate 11 installed with the building 6, and the installation Two horizontal ear plates 12 mounted on the cantilever beam 7 are welded to one side of the mounting plate 11, and a triangular reinforcing plate 13 is evenly welded between each horizontal ear plate 12 and the mounting plate 11. A through hole corresponding to the pin shaft 2 is provided on the horizontal ear plate 12, and a wear-resistant pad 14 is welded at the connection between the horizontal ear plate 12 and the cantilever beam 7. The cantilever beam 7 includes an I-beam support arm 71, and a connecting pipe 72 for the pin shaft 2 to pass through is provided at one end of the I-beam support arm 71. Two protective plates 73 are fixed to the outer sides of both ends of the connecting pipe 72, and the protective plates 73 are fixed to the I-beam support arm 71. The cantilever beam 7 is fixed to the electric hoist 9 by bolts at one end away from the fixed seat 1. The protective shell 8 is a U-shaped structure, the fixing seat 24 is a T-shaped structure, and a reinforcing plate is welded between the horizontal plate and the vertical plate of the fixing seat 24. The vertical plate of the fixing seat 24 is fixed to the building 6 by expansion bolts. The fixing seat 24 and the steel pipe frame 3 are rotatably connected to avoid the steel pipe frame from tilting when the cantilever beam rotates. The fixing seat 24 positions the lower end of the steel pipe frame 3. The device can be directly fixed on the concrete column. For buildings without elevators, it not only solves the problem of directly lifting the goods to the top of the building, but also can lift the goods to the windows of each floor. It is more convenient to use, especially for a certain amount of heavier goods.

[0022] For device installation:

[0023] Step 1: Install the fixing seat 1 on the concrete pillar of the building 6, and the lower end of the fixing seat 1 and the upper end of the wall must have a certain installation height that exceeds the height of the hoisted goods. Use a measuring tool, a level, to check whether the installation surface of the cantilever beam is horizontal to ensure that the electric hoist 9 is always in a horizontal state; due to the inaccurate size of the concrete column, in order to avoid excessive gaps at the joints, it is necessary to repair the column or add a pad during installation; first, use an electric drill to drill directly through the installation hole on the fixing seat 1; secondly, remove the fixing seat; enlarge the hole on the front, and insert the expansion wire into the hole on the front after drilling; finally, reinstall the fixing seat 1, and Insert the expansion wire into the side hole, adjust the level, install and tighten the flat washers, spring washers and nuts of all the expansion wires, and the installation of the fixing seat 1 is now completed; ladders, scaffolding, safety belts, ropes, electric drills, drill bits and other tools are required in the drilling process; the key to installing the fixing seat 1 is to drill holes on both sides of the column, and the drillers stand on the wall. The inside of the wall is built with scaffolding, tables, chairs and other standing platforms for the drillers. At the same time, the expansion wire is tied at the top of the column and the waist of the drillers is tied with a safety belt as the first safety protection. A rope is used on the safe side of the roof to provide the drillers with a second safety protection;

[0024] Step 2: Connect the cantilever beam 7 and the fixed seat 1 through the pin 2. The required tools include scaffolding, tripod, and guide chain. When installing, align the hole on the cantilever beam 7 with the hole on the upper end of the pin 2, and use a hexagonal head to ream the hole and connect them with bolts and nuts;

[0025] Step 3: Insert the upper end of the steel pipe frame 3 into the lower end of the pin shaft 2. When the two holes are aligned, use a hexagonal head to ream the holes and connect them with bolts and nuts;

[0026] Step 4: Fit the upper plane of the fixing seat 2 4 with the lower plane of the steel pipe frame 3. If the circle center of the fixing seat 2 4 is not concentric with the steel pipe frame 3, it is necessary to repair the concrete wall or add an adjustment pad to keep them concentric; drill a hole through the hole on the fixing seat 2 4 and firmly install the fixing seat 2 4 with the expansion wire;

[0027] Step 5: After completing the above assembly, check whether the cantilever beam 7 and the steel pipe frame 3 can rotate flexibly within a rotation angle of 180°;

[0028] Step 6: Connect the electric hoist 9 and the cantilever beam 7 by bolts;

[0029] Step 7: Since the cable of the operating device on the electric hoist 9 is short, it must be lengthened and reconstructed, and its wiring must be completed at the same time to facilitate the operation of the operator;

[0030] Step 8: Arrange the power supply lines reasonably to avoid squeezing of cables during rotation and unacceptable bending radius, and pay attention to rain protection to ensure safe use of the equipment.

[0031] When in use: Step 1: Rotate the cantilever beam 7 to be perpendicular to the outside of the wall, and insert the latch into the hole where the turntable 10 and the fixing seat 2 4 are aligned to prevent the rotating assembly from rotating;

[0032] Step 2: Turn on the power switch, operate the electric hoist 9 to lower the wire rope button, and stop operating after hearing the command of the ground personnel. After the ground personnel hang the heavy object, follow the command of the ground personnel to slowly lift it upwards. After the heavy object is stable, continue to lift it until the bottom of the heavy object exceeds the height of the upper plane of the wall top by more than 100mm, then stop lifting;

[0033] Step 3: After the weight is stable, remove the positioning bolts, and then push the manual rotating rod 5 to drive the steel pipe frame 3 to rotate 180°. At this time, the cantilever beam 7 is located on the inner side perpendicular to the wall, and then insert the pin into the hole aligned with the turntable 10 and the fixed seat 2 4 to prevent the rotating assembly from rotating;

[0034] Step 4: After the weight is stable, operate the wire rope button downward until the weight lands steadily, stop operating, unhook the weight, and retract the electric hoist wire rope into the electric hoist 9 to complete all operations.

[0035] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A cantilever crane, comprising a fixed seat (1), characterized in that: The fixing seat (1) is fixedly installed on a concrete pillar of a building (6). A cantilever beam (7) that can rotate horizontally is arranged on the fixing seat (1). The cantilever beam (7) is connected to the fixing seat (1) through a pin shaft (2), and the cantilever beam (7) and the pin shaft (2) are fixed by bolts. A steel pipe frame (3) is fixed to the lower end of the pin shaft (2). The lower end of the steel pipe frame (3) is connected to a fixing seat 2 (4) through a turntable (10). Pin holes are evenly arranged on the turntable (10) and the fixing seat 2 (4), and the turntable (10) and the fixing seat 2 (4) are fixed by pins. The fixing seat 2 (4) is fixedly installed on the building (6), and a manual rotating rod (5) is welded to the lower end of the side of the steel pipe frame (3). An electric hoist (9) is fixed to the lower side of the end of the cantilever beam (7) away from the fixing seat (1) by bolts.

2. A cantilever crane according to claim 1, characterized in that: The fixing seat (1) is fixed to the building (6) by expansion bolts. The fixing seat (1) comprises a mounting plate (11) mounted on the building (6). Two horizontal ear plates (12) mounted on the cantilever beam (7) are welded to one side of the mounting plate (11). A triangular reinforcing plate (13) is evenly welded between each horizontal ear plate (12) and the mounting plate (11). A through hole corresponding to the pin shaft (2) is provided on the horizontal ear plate (12). A wear-resistant pad (14) is welded at the connection between the horizontal ear plate (12) and the cantilever beam (7).

3. The cantilever crane according to claim 1, characterized in that: The cantilever beam (7) comprises an I-beam support arm (71), one end of the I-beam support arm (71) is provided with a connecting pipe (72) for the pin shaft (2) to pass through, two protective plates (73) are fixed to the outer sides of both ends of the connecting pipe (72), and the protective plates (73) are fixed to the I-beam support arm (71).

4. A cantilever crane according to claim 1, characterized in that: The cantilever beam (7) is fixed with a protective shell (8) for protecting the electric hoist (9) via bolts at one end away from the connection with the fixing seat (1), and the protective shell (8) is a U-shaped structure.

5. The cantilever crane according to claim 1, characterized in that: The second fixing seat (4) is a T-shaped structure, and a reinforcing plate is welded between the horizontal plate and the vertical plate of the second fixing seat (4), and the vertical plate of the second fixing seat (4) is fixed to the building (6) by expansion bolts.

Images