CN216889863U

CN216889863U - Automatic stop type overload limiting device for tower crane

Info

Publication number: CN216889863U
Application number: CN202123278782.XU
Authority: CN
Inventors: 康惠周; 高林
Original assignee: Anhui Fuhuixing Construction Engineering Co ltd
Current assignee: Anhui Fuhuixing Construction Engineering Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-07-05
Anticipated expiration: 2031-12-24

Abstract

The application relates to an automatic stop type overload limiting device for a tower crane, which comprises a suspension arm, wherein an operation chamber is arranged below the suspension arm, a power chamber is arranged on one side of the operation chamber, a winder is rotatably arranged in the power chamber, a sling is wound on the winder, two reversing pulleys and a braking pulley are also arranged in the power chamber, a sliding seat is arranged at the bottom of the suspension arm in a sliding manner, a hoisting pulley is arranged on the sliding seat, a positioning pulley is fixedly arranged on the suspension arm, the sling is slidably arranged on the reversing pulley, the braking pulley, the positioning pulley and the hoisting pulley in a penetrating manner, a lifting hook is fixedly connected to one end of the sling, and the braking chamber is fixedly arranged in the power chamber, it is possible to limit overload and to trigger braking quickly in case of overload.

Description

Automatic stop type overload limiting device for tower crane

Technical Field

The application relates to the technical field of overload limitation of tower cranes, in particular to an automatic stop type overload limiting device for a tower crane.

Background

Tower cranes, also known as tower cranes, originate in western europe. And the movable arm is arranged on the rotary crane at the upper part of the high-rise tower body. The working space is large, and the device is mainly used for vertical and horizontal conveying of materials and installation of building components in building construction. The device consists of a metal structure, a working mechanism and an electric system. The metal structure comprises a tower body, a movable arm, a base and the like. The working mechanism has four parts of lifting, amplitude variation, rotation and walking. The electric system comprises a motor, a controller, a power distribution cabinet, a connecting circuit, a signal and lighting device and the like, and when the tower crane works, the tower crane needs to be carried out strictly according to a hoisting standard, so that overload is avoided.

However, in the existing tower crane, the detected overload signal needs to be converted to be output, and then a command is sent to brake the motor, so that the response is not sensitive enough. Accordingly, those skilled in the art have provided an automatic stop type overload limiting apparatus for a tower crane to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems presented in the background art described above, the present application provides an automatic stop type overload limiting apparatus for a tower crane.

The automatic stop type overload limiting device for the tower crane adopts the following technical scheme that:

the utility model provides an automatic shutdown type overload limiting device for tower crane, includes the davit, the davit below is provided with the control chamber, a side-mounting of control chamber has the power house, it is provided with the winder to rotate in the power house, the winding is provided with the hoist cable on the winder, and still is provided with two switching-over pulleys and a brake pulley in the power house, the bottom of davit slides and is provided with the slide, be provided with on the slide and lift by crane the pulley, the fixed positioning pulley that is provided with on the davit, the hoist cable slides and wears to locate on switching-over pulley, brake pulley, positioning pulley and the pulley that lifts by crane to the one end fixedly connected with lifting hook of hoist cable.

By adopting the technical scheme, the lifting hook can be pulled to slide up and down by arranging the winder, so that the goods can be conveniently lifted, the overload can be limited by the arranged brake pulley, and the brake can be rapidly triggered when the overload occurs.

Preferably, the power chamber is internally and fixedly provided with a brake chamber, the brake chamber is internally and fixedly connected with two slide bars, the brake pulley is slidably sleeved on the slide bars, a spring is arranged between the brake pulley and the inner wall of the brake chamber, and the spring is sleeved on the corresponding slide bars.

Through adopting above-mentioned technical scheme, through setting up the slide bar, can be to the spacing fixed of brake pulley to through setting up the spring, can increase the buffer capacity between brake pulley and the brake chamber.

Preferably, a weighing sensor is fixedly mounted on one side of the brake pulley, a brake block is arranged in the brake chamber in a sliding mode, a strong electromagnet is mounted on the brake block, the strong electromagnet is matched with the weighing sensor, and the bottom of the brake block is fixedly connected with a latch.

Through adopting above-mentioned technical scheme, through setting up the forceful electric iron, can adsorb weighing sensor on the brake pads to weighing can be weighed lifting by crane the thing through the weighing sensor who sets up, when exceeding rated weight, cut off the power of forceful electric iron, make the brake pads slide down fast.

Preferably, a winding shaft is fixedly sleeved on the winder and rotatably installed in the power chamber, and a driven gear is fixedly sleeved on the winding shaft.

By adopting the technical scheme, the winder can be conveniently rotated by arranging the winding shaft.

Preferably, the power chamber is internally and fixedly provided with a motor, an output shaft of the motor is fixedly connected with a power shaft, a driving gear is fixedly sleeved on the power shaft and meshed with a driven gear, and the latch is matched with the driving gear.

Through adopting above-mentioned technical scheme, through setting up the motor, can rotate the power axle to through the epaxial drive gear of power, can mesh and rotate driven gear, and through the latch that sets up, can brake drive gear.

To sum up, the application comprises the following beneficial technical effects:

1. the forceful electric iron that sets up on the brake block can adsorb weighing sensor when the switch on, cooperate with the brake pulley through weighing sensor, can weigh the goods of lifting by crane, when goods weight surpassed the rating, can cut off the power of forceful electric iron, untie the constraint to the brake block, make the brake block descend fast, and the latch through the brake block bottom, can brake to drive gear, the restriction lifts by crane, and the slide bar and the spring that set up in the brake chamber, can be spacing to the brake pulley, and increase the buffer capacity of brake pulley, and is practical convenient.

2. Through the motor, can rotate the power shaft, through the epaxial drive gear of power, can mesh and rotate driven gear and rolling axle, can rotate the winder through the rolling axle, can receive and release the hoist cable through the winder to can adjust the hoist cable direction through two switching-over pulleys in the power house, and through the locating pulley, can make the hoist cable hug closely the davit below, and under the cooperation of the pulley that lifts by crane, can stimulate the lifting hook and slide from top to bottom, conveniently lift by crane the goods.

Drawings

FIG. 1 is a schematic side view of an automatic stop type overload limiting device for a tower crane according to an embodiment of the present disclosure;

FIG. 2 is an enlarged schematic view of a portion A of FIG. 1 of an automatic stop type overload limiting device for a tower crane according to an embodiment of the present application;

fig. 3 is an enlarged schematic view of a part B of fig. 2 of an automatic stop type overload limiting device for a tower crane according to an embodiment of the present application.

Description of reference numerals: 1. a suspension arm; 2. an operation chamber; 3. a power chamber; 4. a winder; 5. a sling; 6. a diverting pulley; 7. a brake pulley; 8. a slide base; 9. hoisting a pulley; 10. positioning the pulley; 11. a hook; 12. a brake chamber; 13. a slide bar; 14. a spring; 15. a weighing sensor; 16. a brake pad; 17. A strong electromagnet; 18. clamping teeth; 19. a winding shaft; 20. a driven gear; 21. a motor; 22. a power shaft; 23. the gears are driven.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses an automatic stop type overload limiting device for a tower crane. Referring to fig. 1-3, an automatic stop type overload limiting device for a tower crane comprises a boom 1, an operation chamber 2 is arranged below the boom 1, a power chamber 3 is arranged at one side of the operation chamber 2, a winder 4 is rotatably arranged in the power chamber 3, a sling 5 is wound on the winder 4, two reversing pulleys 6 and a brake pulley 7 are further arranged in the power chamber 3, a slide base 8 is slidably arranged at the bottom of the boom 1, a lifting pulley 9 is arranged on the slide base 8, a positioning pulley 10 is fixedly arranged on the boom 1, the sling 5 is slidably arranged on the reversing pulley 6, the brake pulley 7, the positioning pulley 10 and the lifting pulley 9, a hook 11 is fixedly connected to one end of the sling 5, the sling 5 can be wound and unwound by arranging the winder 4, so that the hook 11 can be pulled to slide up and down, thereby facilitating the lifting of goods, and the brake pulley 7 is arranged, it is possible to limit overload and to trigger braking quickly in case of overload.

In the application, a brake chamber 12 is fixedly arranged in a power chamber 3, two sliding rods 13 are fixedly connected in the brake chamber 12, a brake pulley 7 is sleeved on the sliding rods 13 in a sliding manner, a spring 14 is arranged between the brake pulley 7 and the inner wall of the brake chamber 12, the spring 14 is sleeved on the corresponding sliding rods 13, the brake pulley 7 can be limited and fixed by arranging the sliding rods 13, and the buffer capacity between the brake pulley 7 and the brake chamber 12 can be increased by arranging the spring 14.

In this application, there is weighing sensor 15 one side of brake pulley 7 still fixed mounting, it is provided with brake block 16 to slide in brake chamber 12, install forceful electric magnet 17 on the brake block 16, forceful electric magnet 17 and weighing sensor 15 mutually support, and brake block 16's bottom still fixedly connected with latch 18, through setting up forceful electric magnet 17, can adsorb weighing sensor 15 on brake block 16, and can weigh the thing of lifting by crane through weighing sensor 15 that sets up, when exceeding rated weight, cut off the power of forceful electric magnet 17, make brake block 16 glide fast.

In this application, fixed cover is equipped with rolling axle 19 on the rolling ware 4, and rolling axle 19 rotates and installs in power house 3, and fixed cover is equipped with driven gear 20 on the rolling axle 19, through setting up rolling axle 19, can conveniently rotate rolling ware 4.

In this application, fixed mounting has motor 21 in the power house 3, fixedly connected with power shaft 22 on motor 21's the output shaft, the fixed cover is equipped with drive gear 23 on the power shaft 22, drive gear 23 meshes with driven gear 20 mutually, and latch 18 cooperatees with drive gear 23, through setting up motor 21, can rotate power shaft 22, and through drive gear 23 on the power shaft 22, can mesh and rotate driven gear 20, and through the latch 18 that sets up, can brake drive gear 23.

The implementation principle of the automatic stop type overload limiting device for the tower crane in the embodiment of the application is as follows: when the lifting device is used, the power shaft 22 can be rotated through the motor 21, the driven gear 20 and the winding shaft 19 can be meshed and rotated through the driving gear 23 on the power shaft 22, the winder 4 can be rotated through the winding shaft 19, the sling 5 can be collected and released through the winder 4, the direction of the sling 5 can be adjusted through the two reversing pulleys 6 in the power chamber 3, the sling 5 can be tightly attached to the lower part of the lifting arm 1 through the positioning pulley 10, the lifting hook 11 can be pulled to slide up and down under the matching of the lifting pulley 9, so that goods can be lifted conveniently, meanwhile, the strong electromagnet 17 arranged on the brake block 16 can adsorb the weighing sensor 15 when the power supply is switched on, the lifted goods can be weighed through the matching of the weighing sensor 15 and the brake pulley 7, when the weight of the heavy goods exceeds a rated value, the power supply of the strong electromagnet 17 can be cut off, and the constraint on the brake block 16 is released, the brake block 16 descends rapidly, the driving gear 23 can be braked through the latch 18 at the bottom of the brake block 16, hoisting is limited, the sliding rod 13 and the spring 14 arranged in the brake chamber 12 can limit the brake pulley 7, the buffering capacity of the brake pulley 7 is increased, and the brake device is practical and convenient.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An automatic stop type overload limiting device for a tower crane comprises a suspension arm (1) and is characterized in that an operation chamber (2) is arranged below the suspension arm (1), a power chamber (3) is installed on one side of the operation chamber (2), a winder (4) is rotatably arranged in the power chamber (3), a sling (5) is wound on the winder (4), two reversing pulleys (6) and a braking pulley (7) are further arranged in the power chamber (3), a sliding seat (8) is slidably arranged at the bottom of the suspension arm (1), a lifting pulley (9) is arranged on the sliding seat (8), a positioning pulley (10) is fixedly arranged on the suspension arm (1), and the sling (5) is slidably arranged on the reversing pulley (6), the braking pulley (7), the positioning pulley (10) and the lifting pulley (9), and one end of the sling (5) is fixedly connected with a lifting hook (11).

2. The automatic stop type overload limiting apparatus for a tower crane according to claim 1, wherein: the brake device is characterized in that a brake chamber (12) is fixedly arranged in the power chamber (3), two sliding rods (13) are fixedly connected in the brake chamber (12), a brake pulley (7) is slidably sleeved on the sliding rods (13), a spring (14) is arranged between the inner walls of the brake pulley (7) and the brake chamber (12), and the spring (14) is sleeved on the corresponding sliding rods (13).

3. The automatic stop type overload limiting apparatus for a tower crane according to claim 2, wherein: the brake block is characterized in that a weighing sensor (15) is further fixedly mounted on one side of the brake pulley (7), a brake block (16) is arranged in the brake chamber (12) in a sliding mode, a strong electromagnet (17) is mounted on the brake block (16), the strong electromagnet (17) is matched with the weighing sensor (15), and clamping teeth (18) are further fixedly connected to the bottom of the brake block (16).

4. The automatic stop type overload limiting apparatus for a tower crane according to claim 1, wherein: a winding shaft (19) is fixedly sleeved on the winder (4), the winding shaft (19) is rotatably installed in the power chamber (3), and a driven gear (20) is fixedly sleeved on the winding shaft (19).

5. The automatic-stop overload limiting apparatus for a tower crane according to claim 4, wherein: the utility model discloses a power transmission device, including power room (3), fixed mounting has motor (21) in the power room (3), fixedly connected with power shaft (22) on the output shaft of motor (21), fixed cover is equipped with drive gear (23) on power shaft (22), drive gear (23) and driven gear (20) mesh mutually.