Indoor high-lift rotary amplitude-changing crane

Abstract

The utility model relates to the technical field of cranes, and discloses an indoor high-lift rotary amplitude-changing crane which comprises a rotary machine table, a hoisting mechanism, a rotary mechanism, an amplitude-changing mechanism and a safety brake, and the hoisting mechanism, the rotary mechanism, the amplitude-changing mechanism and the safety brake are mounted on the rotary machine table. An arm frame is mounted on the right side of the rotary machine table; a first traction wheel and a second traction wheel are mounted on the arm frame, the same steel wire rope is arranged on the first traction wheel and the second traction wheel, and a movable pulley is mounted on the steel wire rope. According to the indoor high-lift rotary amplitude-changing crane, the amplitude-changing mechanism adopts the screw amplitude-changing device to realize large-arm amplitude-changing, compared with general hydraulic amplitude-changing and screw amplitude-changing devices, the screw amplitude-changing device has a structural self-locking function, the amplitude-changing mechanism can stop immediately as long as equipment is powered off, the safety and the reliability are higher, and the large-arm amplitude-changing function is realized. And the safety brake can quickly stop the movement of the crane in emergency, so that the safety is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a high-lift slewing and luffing crane for indoor use. Background Art

[0002] Emergency escape cranes play a vital role in emergency situations, especially in complex environments such as high-rise buildings and large factories. In emergencies like fires and earthquakes, emergency escape cranes can provide a fast and safe escape route for trapped personnel. They can quickly evacuate personnel from high altitudes to safe areas, effectively reducing casualties.

[0003] Emergency escape cranes are usually equipped with core components such as electric motors, pulleys, and safety ropes. In an emergency, the device can automatically start and adjust the descent speed through a speed controller to ensure that trapped people can evacuate smoothly and safely. Existing cranes generally use hydraulic luffing. When encountering emergencies such as fires and earthquakes, the equipment loses power and the boom is prone to swinging down. The safety needs to be improved. Therefore, there is an urgent need for indoor high-lift slewing luffing cranes. Utility Model Content

[0004] The purpose of the utility model is to provide a high-lift slewing and luffing crane for indoor use to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a high-lift slewing and luffing crane for indoor use, comprising a slewing platform, a lifting mechanism installed on the slewing platform, a slewing mechanism installed on the slewing platform, a luffing mechanism installed on the slewing platform, a safety brake installed on the slewing platform, and a boom installed on the right side of the slewing platform;

[0006] The boom is equipped with a first traction wheel and a second traction wheel. The first traction wheel and the second traction wheel are provided with the same steel wire rope. A movable pulley is installed on the steel wire rope. A sling is provided at the bottom of the movable pulley. A maintenance basket is installed at the bottom of the sling. A luffing protection piston cylinder is installed on the right side of the luffing mechanism.

[0007] Preferably, the lifting mechanism includes a lifting drum, a working brake is installed on the back of the lifting drum, and a lifting motor is installed on the back of the working brake.

[0008] The slewing platform is the basic platform of the entire crane. The lifting mechanism is installed on the slewing platform and is used to lift and lower heavy objects. The lifting drum is used to wind and release the wire rope to control the lifting and lowering of the load; the working brake is installed on the back of the lifting drum to control the movement of the drum under normal working conditions; the lifting motor provides power to drive the rotation of the lifting drum to achieve the lifting and lowering of the load.

[0009] Preferably, one end of the steel wire rope is fixedly connected to a rotary joint, and the rotary joint is fixedly connected to the boom.

[0010] Preferably, the other end of the steel wire rope is installed on the lifting drum, and the steel wire rope is a rotation-resistant steel wire rope.

[0011] The luffing mechanism is used to adjust the angle of the boom. The luffing mechanism adopts a screw luffing device to achieve the luffing of the boom. Compared with the general hydraulic luffing, the screw luffing device itself has a structural self-locking function. As long as the equipment loses power, the luffing mechanism can stop immediately, which has higher safety and reliability. The safety brake can quickly stop the movement of the crane in an emergency to ensure safety.

[0012] Preferably, the right side of the luffing mechanism is rotatably connected to the boom, and the right side of the luffing protection piston cylinder is rotatably connected to the boom.

[0013] Preferably, a guardrail is installed on the rotary table.

[0014] The guardrail is installed on the rotary machine to protect the safety of personnel and prevent accidental falls or other dangers. The lifting drum is a single-layer multi-layer folding drum, which allows the wire rope to be wound on multiple levels, improving the drum capacity and work efficiency.

[0015] Preferably, the lifting drum is a single-link multi-layer folding drum.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0017] First, in the present invention, the slewing platform is the basic platform of the entire crane, and the hoisting mechanism is installed on the slewing platform for lifting and lowering heavy objects, wherein the hoisting drum is used to wind and release the wire rope to control the lifting and lowering of the load; the working brake is installed on the back of the hoisting drum to control the movement of the drum under normal working conditions; the hoisting motor provides power to drive the rotation of the hoisting drum to achieve the lifting and lowering of the load, and the luffing mechanism is used to adjust the angle of the boom. The luffing mechanism adopts a screw luffing device to achieve the boom luffing. Compared with the general hydraulic luffing, the screw luffing itself has a structural self-locking function. As long as the equipment loses power, the luffing mechanism can stop immediately, which is safer and more reliable. The safety brake can quickly stop the movement of the crane in an emergency to ensure safety and the boom It is installed on the right side of the rotary machine to extend and support the load. The first traction wheel and the second traction wheel are installed on the boom to guide the movement of the wire rope, and the wire rope is used to transmit force. One end of the wire rope is fixedly connected to the boom through a rotary joint to ensure that the wire rope will not kink during rotation, thereby extending its service life. The wire rope is a rotation-resistant wire rope that can prevent rotation, reduce the torsion and wear of the wire rope, avoid the situation where the movable pulley is entangled during lifting, and improve safety and reliability. The movable pulley is installed on the wire rope and can move up and down with the movement of the wire rope to reduce the lifting force. The sling connects the movable pulley and the maintenance basket for suspending and lifting personnel, and the variable amplitude protection piston cylinder is used to prevent the sudden breakage of the screw, which can effectively ensure that the boom of the boom does not swing down and ensure the safety of personnel.

[0018] Second, in the present invention, a guardrail is installed on the rotary machine to protect the safety of the operator and prevent accidental falls or other dangers. The lifting drum is a single-link multi-layer folded-line drum, which allows the wire rope to be wound on multiple levels, thereby improving the drum's capacity and working efficiency. The folded-line design helps to reduce the wear of the wire rope, extend its service life, and effectively reduce the overall volume of the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0021] Among them: 2. Lifting mechanism; 3. Slewing mechanism; 4. Safety brake; 5. Luffing mechanism; 6. Slewing platform; 7. Boom; 8. Wire rope; 9. Movable pulley; 10. Lifting rope; 11. Maintenance basket; 12. Luffing protection piston cylinder; 13. Rotary joint. DETAILED DESCRIPTION

[0022] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] The utility model provides the following technical solutions:

[0024] Example 1

[0025] See also Figure 1 and Figure 2 , an indoor high-lift slewing and luffing crane, comprising a slewing platform 6, a lifting mechanism 2 mounted on the slewing platform 6, a slewing mechanism 3 mounted on the slewing platform 6, a luffing mechanism 5 mounted on the slewing platform 6, a safety brake 4 mounted on the slewing platform 6, and a boom 7 mounted on the right side of the slewing platform 6;

[0026] The first traction wheel and the second traction wheel are installed on the boom 7. The first traction wheel and the second traction wheel are provided with the same steel wire rope 8. A movable pulley 9 is installed on the steel wire rope 8. A sling 10 is provided at the bottom of the movable pulley 9. A maintenance basket 11 is installed at the bottom of the sling 10. A luffing protection piston cylinder 12 is installed on the right side of the luffing mechanism 5.

[0027] The lifting mechanism 2 includes a lifting drum, a working brake is installed on the back of the lifting drum, and a lifting motor is installed on the back of the working brake.

[0028] One end of the steel wire rope 8 is fixedly connected to a rotary joint 13 , and the rotary joint 13 is fixedly connected to the boom 7 .

[0029] The other end of the steel wire rope 8 is installed on the hoisting drum, and the steel wire rope 8 is a rotation-resistant steel wire rope.

[0030] The right side of the luffing mechanism 5 is rotatably connected to the boom 7 , and the right side of the luffing protection piston cylinder 12 is rotatably connected to the boom 7 .

[0031] Through the above technical solution, the slewing platform 6 is the basic platform of the entire crane. The lifting mechanism 2 is installed on the slewing platform 6 for lifting and lowering heavy objects, wherein the lifting drum is used to wind and release the wire rope 8 to control the lifting and lowering of the load; the working brake is installed on the back of the lifting drum to control the movement of the drum under normal working conditions; the lifting motor provides power to drive the rotation of the lifting drum to achieve the lifting and lowering of the load, and the luffing mechanism 5 is used to adjust the angle of the boom 7. The luffing mechanism 5 uses a screw luffing device to achieve the boom luffing. Compared with the general hydraulic luffing, the screw luffing itself has a structural self-locking function. As long as the equipment loses power, the luffing mechanism 5 can stop immediately, which is safer and more reliable. The safety brake 4 can quickly stop the movement of the crane in an emergency to ensure safety. The boom 7 is installed on the slewing platform. The right side of the platform 6 is used to extend and support the load. The first traction wheel and the second traction wheel are installed on the boom 7 to guide the movement of the wire rope 8, and the wire rope 8 is used to transmit force. One end of the wire rope 8 is fixedly connected to the boom 7 through a rotary joint 13 to ensure that the wire rope 8 will not be kinked during rotation, thereby extending its service life. The wire rope 8 is a rotation-resistant wire rope that can prevent rotation, reduce the torsion and wear of the wire rope 8, avoid the situation where the movable pulley 9 is entangled during lifting, and improve safety and reliability. The movable pulley 9 is installed on the wire rope 8 and can move up and down with the movement of the wire rope 8 to reduce the lifting force. The sling 10 connects the movable pulley 9 and the maintenance basket 11 for suspending and lifting personnel, and the variable amplitude protection piston cylinder 12 is used to prevent the sudden breakage of the screw, which can effectively ensure that the boom of the boom 7 does not swing down, thereby ensuring the safety of personnel.

[0032] Example 2

[0033] See also Figure 1 and Figure 2 , and on the basis of Example 1, it is further obtained that: a guardrail is installed on the rotary machine 6.

[0034] The lifting drum is a single-unit multi-layer folding drum.

[0035] Through the above technical solution, a guardrail is installed on the rotary machine 6 to protect the safety of personnel and prevent accidental falls or other dangers. The lifting drum is a single-layer multi-layer folded-line drum, which allows the wire rope 8 to be wound on multiple levels, thereby improving the capacity and working efficiency of the drum. The folded-line design helps to reduce the wear of the wire rope 8, extend its service life, and effectively reduce the overall volume of the lifting mechanism 2.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit thereof, and the scope is defined by the appended claims and their equivalents.

Claims

1. A high-lift slewing crane for indoor use, comprising a slewing platform (6), characterized in that: The rotary platform (6) is provided with a lifting mechanism (2), a rotary mechanism (3), a variable amplitude mechanism (5), a safety brake (4), and an arm (7) on the right side of the rotary platform (6). A first traction wheel and a second traction wheel are installed on the boom (7), the first traction wheel and the second traction wheel are provided with a same steel wire rope (8), a movable pulley (9) is installed on the steel wire rope (8), a sling (10) is provided at the bottom of the movable pulley (9), a maintenance hanging basket (11) is installed at the bottom of the sling (10), and a luffing protection piston cylinder (12) is installed on the right side of the luffing mechanism (5).

2. The indoor high lift slewing crane according to claim 1, characterized in that: The lifting mechanism (2) comprises a lifting drum, a working brake is installed on the back of the lifting drum, and a lifting motor is installed on the back of the working brake.

3. The indoor high lift slewing crane according to claim 1, characterized in that: One end of the steel wire rope (8) is fixedly connected to a rotary joint (13), and the rotary joint (13) is fixedly connected to the boom (7).

4. The indoor high lift slewing crane according to claim 1, characterized in that: The other end of the steel wire rope (8) is installed on the lifting drum, and the steel wire rope (8) is a rotation-resistant steel wire rope.

5. The indoor high lift slewing crane according to claim 1, characterized in that: The right side of the amplitude changing mechanism (5) is rotatably connected to the boom (7), and the right side of the amplitude changing protection piston cylinder (12) is rotatably connected to the boom (7).

6. The indoor high lift slewing crane according to claim 1, characterized in that: A guardrail is installed on the rotary machine (6).

7. The indoor high lift slewing crane according to claim 2, characterized in that: The lifting drum is a single-link multi-layer folding drum.

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