CN217458612U

CN217458612U - Overspeed braking device of crane drum

Info

Publication number: CN217458612U
Application number: CN202221669836.7U
Authority: CN
Inventors: 刘峰; 王兴亚; 杨利利
Original assignee: Chengjiang Industrial Co ltd
Current assignee: Chengjiang Industrial Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-09-20
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses an overspeed arresting gear of hoist reel, including the chassis: the lifting rod is installed at the top of the underframe, a connecting block is arranged on one side of the lifting rod, a side plate is movably connected to the top of the connecting block, a supporting frame is movably connected to the top of the side plate, and a limiting block is fixedly connected to the top of the supporting frame; the rotating rod is movably connected inside the limiting block, and a winding drum is arranged on one side of the rotating rod; the protecting sleeve is movably connected to the top of the supporting rod. According to the overspeed braking device of the crane drum, the outer surface of the braking piece is rough, when external force is received, the braking piece buffers the drum under the action of the buffer spring, the drum main body can be protected, the braking mechanism can also be protected, meanwhile, the rotating speed of the main gear is controlled by the speed reducing motor, and under the meshing transmission action of the main gear and the auxiliary gear, the rotating speed is reduced to finally stop, and effective braking is completed.

Description

Overspeed braking device of crane drum

Technical Field

The utility model relates to a hoist drum technical field specifically is a hoist drum's overspeed brake device.

Background

The crane is a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects within a certain range, which is also called a crown block, a crane and a tire crane and is mainly characterized in that a driving cab and a lifting cab of the crane are combined into a whole and are formed by the evolution of a crawler crane, a crawler track and a walking bracket part of a walking mechanism are changed into a chassis with tires, the defect that a crawler track plate of the crawler crane damages a road surface is overcome, the crane belongs to a material carrying machine, along with the development of the society, the production of industrial machines in China leads to more and more types of cranes, the crane is generally large and is used for transporting heavy objects, and therefore when a fault occurs, a serious safety accident is caused, and a braking device needs to be additionally arranged on the crane. However, the existing overspeed braking device for crane drum still has the disadvantages that the following problems exist when in use:

1. the conventional overspeed braking device for the crane drum cannot effectively buffer and protect a brake block and a drum body in the rapid braking process, so that the service life of the brake block is shortened, and the drum group is easily damaged;

2. the existing overspeed braking device for the crane drum is inconvenient for mounting and replacing components, is inconvenient for flexible adjustment in the process of long-term use, and has a limited application range.

Aiming at the problems, innovative design is urgently needed on the basis of the overspeed braking device of the original crane winding drum.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an overspeed arresting gear of hoist reel to solve the overspeed arresting gear of the current hoist reel that proposes in the above-mentioned background art, at the in-process of braking rapidly, fail to carry out effectual buffering protection to braking piece and reel body, thereby make the life of application of braking piece subtract the weak point, also fragile reel group, be not convenient for install and change the subassembly, the in-process of using for a long time also is not convenient for nimble the regulation, the limited problem of application scope.

In order to achieve the above object, the utility model provides a following technical scheme: an overspeed braking device of a crane drum comprises an underframe:

the lifting rod is mounted at the top of the underframe, one side of the lifting rod is provided with a connecting block, the top of the connecting block is movably connected with a side plate, the top of the side plate is movably connected with a supporting frame, and the top of the supporting frame is fixedly connected with a limiting block;

the rotating rod is movably connected inside the limiting block, and a winding drum is arranged on one side of the rotating rod;

the protecting sleeve is movably connected to the top of the supporting rod, a main gear is movably connected inside the protecting sleeve, a pinion is movably connected above the main gear, a speed reducing motor is movably connected to one side of the main gear, and a supporting plate is arranged below the speed reducing motor;

the protection sleeve comprises a fixing frame, wherein the fixing frame is arranged on one side of the protection sleeve, a rail is arranged inside the fixing frame, the inside of the fixing frame is movably connected with a sliding block, the top of the sliding block is fixedly connected with an annular frame, a buffer spring is fixedly connected to the rear end of the annular frame, and a brake piece is movably connected to the rear end of the buffer spring.

Preferably, the lifting rod is vertically arranged on the upper surface of the underframe, and the lower surface of the connecting block is attached to the upper surface of the underframe.

Preferably, the upper surface of connecting block and the lower surface laminating of curb plate, and the support frame is the upper surface of installing at the chassis perpendicularly.

Preferably, the upper surface of the lifting rod is attached to the lower surface of the protective sleeve, and the central axis of the protective sleeve coincides with the central axis of the main gear.

Preferably, the main gear forms a meshing transmission structure through the reduction motor and the auxiliary gear, and the lower surface of the reduction motor is attached to the upper surface of the support plate.

Preferably, the fixed frame forms a sliding structure through the rail and the sliding block, and the sliding block and the annular frame form an integrated structure.

Preferably, the central axis of the annular frame coincides with the central axis of the winding drum, and the annular frame forms an elastic structure with the brake piece through the buffer spring.

Preferably, the central axis of the brake block coincides with the central axis of the drum, and the central axis of the drum coincides with the central axis of the rotating rod.

Compared with the prior art, the utility model provides an overspeed arresting gear of hoist reel has following advantage:

1. the lifting device is provided with a lifting rod, a connecting block, a side plate, a support frame, a limiting block, a rotating rod and a winding drum, the lifting device is placed in an area needing operation after improvement, the rotating rod penetrates through the limiting block to support and fix the winding drum, the winding drum is mainly a mechanism for lifting a traction rope of a crane, the height of a lifting object box can be adjusted through rotation, in order to ensure the lifting safety in the lifting process, the winding drum can be braked in time when danger is met, a sliding block in a fixing frame can rapidly move inwards under the action of electric drive of a rail during braking, and finally the inner surface of the winding drum is attached to the outer surface of a braking piece;

2. the improved brake block is rough in outer surface and buffers the winding drum under the action of the buffer spring when external force is received, not only can the winding drum main body be protected, but also the brake mechanism can be protected, meanwhile, the rotating speed of the main gear is controlled by the reducing motor, and under the meshing transmission action of the main gear and the auxiliary gear, the rotating speed is reduced to be finally stopped, effective braking is completed, the lifting rod can enable the height of the auxiliary gear to be adjusted in the using process, and further the application range of the brake mechanism is enlarged.

Drawings

FIG. 1 is a schematic view of the main sectional structure of the present invention;

FIG. 2 is a schematic view of the external structural connection of the present invention;

FIG. 3 is an enlarged schematic view of the structure of FIG. 1;

FIG. 4 is a schematic side view of the ring frame of the present invention;

fig. 5 is a schematic perspective view of the support frame of the present invention.

In the figure: 1. a chassis; 2. a lifting rod; 3. connecting blocks; 4. a side plate; 5. a support frame; 6. a limiting block; 7. a rotating rod; 8. a reel; 9. a protective sleeve; 10. a main gear; 11. a pinion gear; 12. a reduction motor; 13. a support plate; 14. a fixed mount; 15. a track; 16. a slider; 17. an annular frame; 18. a buffer spring; 19. a brake pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: an over-speed brake device for a hoist drum, comprising: the device comprises a chassis 1, a lifting rod 2, a connecting block 3, a side plate 4, a supporting frame 5, a limiting block 6, a rotating rod 7, a winding drum body 8, a protective cover 9, a main gear 10, a pinion 11, a speed reducing motor 12, a supporting plate 13, a fixed frame 14, a track 15, a sliding block 16, an annular frame 17, a buffer spring 18 and a brake piece 19,

the lifting rod 2 is installed at the top of the underframe 1, one side of the lifting rod 2 is provided with a connecting block 3, the top of the connecting block 3 is movably connected with a side plate 4, the top of the side plate 4 is movably connected with a supporting frame 5, and the top of the supporting frame 5 is fixedly connected with a limiting block 6;

the rotating rod 7 is movably connected inside the limiting block 6, and one side of the rotating rod 7 is provided with a winding drum body 8;

the protecting cover 9 is movably connected to the top of the lifting rod 2, a main gear 10 is movably connected to the interior of the protecting cover 9, a secondary gear 11 is movably connected to the upper portion of the main gear 10, a speed reducing motor 12 is movably connected to one side of the main gear 10, and a supporting plate 13 is arranged below the speed reducing motor 12;

the fixing frame 14 is arranged on one side of the protecting sleeve 9, a rail 15 is arranged inside the fixing frame 14, a sliding block 16 is movably connected inside the rail 15, a ring frame 17 is fixedly connected to the top of the sliding block 16, a buffer spring 18 is fixedly connected to the rear end of the ring frame 17, and a brake disc 19 is movably connected to the rear end of the buffer spring 18.

Specifically, as shown in fig. 1 and 2, the lifting rod 2 is vertically installed on the upper surface of the base frame 1, the lower surface of the connecting block 3 is attached to the upper surface of the base frame 1, the device is placed in an area needing operation, and then the rotating rod 7 passes through the limiting block 6 to complete supporting and fixing of the winding drum body 8;

specifically, as shown in fig. 2 and 3, the upper surface of the connecting block 3 is attached to the lower surface of the side plate 4, the supporting frame 5 is vertically mounted on the upper surface of the base frame 1, and the reel body 8 is mainly a lifting mechanism of a pulling rope of a crane and can rotate to adjust the height of the lifting object box;

specifically, as shown in fig. 3 and 4, the upper surface of the lifting rod 2 is attached to the lower surface of the protecting sleeve 9, and the central axis of the protecting sleeve 9 is overlapped with the central axis of the main gear 10, so that in order to ensure the lifting safety in the lifting process, the winding drum body 8 is required to be braked in time when danger occurs;

specifically, as shown in fig. 4 and 5, the main gear 10 forms a meshing transmission structure through the reduction motor 12 and the pinion 11, and the lower surface of the reduction motor 12 is attached to the upper surface of the support plate 13, so that the slider 16 inside the fixed frame 14 can rapidly move inward under the electric driving action of the rail 15 during braking, and finally the inner surface of the reel body 8 is attached to the outer surface of the brake pad 19;

as shown in fig. 1 and 5, the fixed frame 14 forms a sliding structure with the slider 16 through the rail 15, and the slider 16 and the annular frame 17 are of an integral structure, the outer surface of the brake pad 19 is rough, and when external force is received, the brake pad 19 buffers the reel body 8 under the action of the buffer spring 18;

as shown in fig. 2 and 5, the central axis of the annular frame 17 coincides with the central axis of the reel body 8, and the annular frame 17 forms an elastic structure with the brake disc 19 through the buffer spring 18, so that not only the main body of the reel body 8 can be protected, but also the braking mechanism can be protected, and simultaneously, the rotation speed of the main gear 10 is controlled by the reduction motor 12 and under the meshing transmission action of the main gear 10 and the secondary gear 11;

specifically, as shown in fig. 3 and 5, the central axis of the brake pad 19 coincides with the central axis of the winding drum body 8, and the central axis of the winding drum body 8 coincides with the central axis of the rotating rod 7, so that the lifting rod 2 can adjust the height of the pinion 11 in the use process, and further, the application range of the brake mechanism is increased.

The working principle is as follows: when the overspeed braking device of the crane drum is used, according to the figures 1, 2, 3, 4 and 5, firstly the device is placed in the area needing operation, secondly the rotating rod 7 passes through the limiting block 6 to complete the supporting and fixing of the drum body 8, the drum body 8 is mainly a mechanism for lifting a pulling rope of the crane, the rotation can adjust the height of a hoisting object box, in order to ensure the hoisting safety in the hoisting process, the drum body 8 can be braked in time when danger is met, the slide block 16 in the fixing frame 14 can move inwards rapidly under the electric drive of the rail 15 in the braking process, finally the inner surface of the drum body 8 is attached to the outer surface of the brake block 19, the outer surface of the brake block 19 is rough, and when external force is received, the brake block 19 buffers the drum body 8 under the action of the buffer spring 18, thereby protecting the drum body 8, the braking mechanism can be protected, meanwhile, the rotating speed of the main gear 10 is reduced to be finally stopped under the control of the speed reducing motor 12 and under the meshing transmission action of the main gear 10 and the pinion 11, effective braking is completed, the lifting rod 2 can enable the height of the pinion 11 to be adjusted in the using process, and the application range of the braking mechanism is further enlarged.

Those not described in detail in this specification are within the skill of the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An overspeed braking device of a crane drum comprises an underframe (1), and is characterized in that:

the lifting rod (2) is installed at the top of the bottom frame (1), one side of the lifting rod (2) is provided with a connecting block (3), the top of the connecting block (3) is movably connected with a side plate (4), the top of the side plate (4) is movably connected with a supporting frame (5), and the top of the supporting frame (5) is fixedly connected with a limiting block (6);

the rotating rod (7) is movably connected inside the limiting block (6), and one side of the rotating rod (7) is provided with a winding drum body (8);

the protecting sleeve (9) is movably connected to the top of the lifting rod (2), a main gear (10) is movably connected to the interior of the protecting sleeve (9), a secondary gear (11) is movably connected to the upper portion of the main gear (10), a speed reducing motor (12) is movably connected to one side of the main gear (10), and a supporting plate (13) is arranged below the speed reducing motor (12);

the protective sleeve comprises a fixed frame (14) arranged on one side of the protective sleeve (9), a rail (15) is arranged inside the fixed frame (14), a sliding block (16) is movably connected inside the rail (15), an annular frame (17) is fixedly connected to the top of the sliding block (16), a buffer spring (18) is fixedly connected to the rear end of the annular frame (17), and a brake disc (19) is movably connected to the rear end of the buffer spring (18).

2. The overspeed braking device of a crane drum as set forth in claim 1, wherein: the lifting rod (2) is vertically arranged on the upper surface of the bottom frame (1), and the lower surface of the connecting block (3) is attached to the upper surface of the bottom frame (1).

3. The overspeed braking device of a crane drum as set forth in claim 1, wherein: the upper surface of connecting block (3) and the lower surface laminating of curb plate (4), and support frame (5) are the upper surface of vertical form installation in chassis (1).

4. The overspeed braking device of a crane drum as set forth in claim 1, wherein: the upper surface of the lifting rod (2) is attached to the lower surface of the protecting sleeve (9), and the central axis of the protecting sleeve (9) coincides with the central axis of the main gear (10).

5. The overspeed braking device of a crane drum as set forth in claim 1, wherein: the main gear (10) and the auxiliary gear (11) form a meshing transmission structure through the speed reducing motor (12), and the lower surface of the speed reducing motor (12) is attached to the upper surface of the support plate (13).

6. The overspeed braking device of a crane drum as set forth in claim 1, wherein: the fixed frame (14) and the sliding block (16) form a sliding structure through the rail (15), and the sliding block (16) and the annular frame (17) form an integrated structure.

7. The overspeed braking device of a crane drum as set forth in claim 1, wherein: the central axis of the annular frame (17) is superposed with the central axis of the coiling block body (8), and the annular frame (17) forms an elastic structure with the brake block (19) through the buffer spring (18).

8. The overspeed braking device of a crane drum as set forth in claim 1, wherein: the central axis of the brake block (19) is superposed with the central axis of the coiling block body (8), and the central axis of the coiling block body (8) is superposed with the central axis of the rotating rod (7).