CN215980666U

CN215980666U - Stepless speed regulating device for tower crane

Info

Publication number: CN215980666U
Application number: CN202122646147.6U
Authority: CN
Inventors: 陈刚
Original assignee: Jinan Wochen Steel Structure Co ltd
Current assignee: Jinan Wochen Steel Structure Co ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-03-08
Anticipated expiration: 2031-11-01

Abstract

The utility model discloses a stepless speed regulating device for a tower crane, which comprises a support frame, wherein both sides of the bottom of the support frame are fixedly connected with mounting bases, and the center of the top of the support frame is fixedly connected with a support plate; a driving motor and a gear transmission case are respectively installed on two sides of the top of the supporting plate, the output end of the driving motor is fixedly connected with a main driving wheel, the input end of the gear transmission case is fixedly connected with a variable speed adjusting mechanism, and a driving belt is installed between the main driving wheel and the variable speed adjusting mechanism; the variable speed adjusting mechanism comprises a fixed wheel disc, a front end cover is installed at the front end of the fixed wheel disc, and the front end cover is fixedly connected with the fixed wheel disc through a plurality of fixing screws. The utility model can carry out stepless speed regulation without changing the power and the rotating speed of the motor by designing a simple variable speed regulating mechanism, has more linear speed regulation and does not have the condition of blocking or shaking, thereby greatly improving the integral working efficiency.

Description

Stepless speed regulating device for tower crane

Technical Field

The utility model relates to the field of construction machinery, in particular to a stepless speed regulating device for a tower crane.

Background

The tower crane, namely the tower crane, is also called as the tower crane for short. Is a hoisting device used in building construction. The tower crane can also be divided into a plurality of varieties according to different design forms, such as a self-elevating tower crane, an inner climbing tower crane, a flat-top tower crane, a jib tower crane, a quick-assembly tower crane and the like. The standard for distinguishing also has many tower cranes, namely tower cranes for short, and the main components include a foundation, a tower body, a jacking part, a rotating part, a lifting part, a balance arm, a crane boom, a crane trolley, a tower top, a driver cab, a luffing part and the like. The tower crane is arranged on the ground and needs a foundation part, the tower body is a tower crane body and is also a lifting part, the lifting part enables the tower crane to be lifted, the rotation is to keep the upper half body of the tower crane to rotate horizontally, the lifting mechanism is used for lifting a heavy object, the balance arm support is used for keeping moment balance, the lifting arm support is generally a stressed part for lifting the heavy object, the trolley is used for installing a pulley block, a steel rope and a lifting hook and is also a direct stressed part, the tower top is certainly used for keeping the arm support balanced in stress, the cab is an operation place, and the amplitude variation enables the trolley to run along a track.

The speed regulation of the tower crane is usually carried out by matching a motor with a gear reducer, although the normal speed regulation is not influenced by the speed regulation mode, the speed regulation is not linear in the speed regulation process, sudden blocking or shaking is easy to occur, and when a heavy object is hoisted at high altitude, danger is easy to occur, and certain potential safety hazard exists.

Therefore, it is needed to provide a stepless speed regulating device for a tower crane to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the speed regulation of a tower crane is usually carried out by matching a motor with a gear reducer, and the speed regulation mode does not influence the normal speed regulation, but in the speed regulation process, the speed regulation is not linear, sudden blocking or shaking is easy to occur, danger is easy to occur when heavy objects are hoisted at high altitude, and certain potential safety hazard exists.

In order to solve the technical problems, the utility model adopts a technical scheme that: the stepless speed regulating device for the tower crane comprises a support frame, wherein both sides of the bottom of the support frame are fixedly connected with mounting bases, and the center of the top of the support frame is fixedly connected with a support plate;

a driving motor and a gear transmission case are respectively installed on two sides of the top of the supporting plate, the output end of the driving motor is fixedly connected with a main driving wheel, the input end of the gear transmission case is fixedly connected with a variable speed adjusting mechanism, and a driving belt is installed between the main driving wheel and the variable speed adjusting mechanism;

the variable speed adjustment mechanism includes fixed rim plate, the front end housing is installed to the front end of fixed rim plate, the front end housing is through a plurality of set screws and fixed rim plate fixed connection, rotatory air inlet interface is installed at the center of front end housing front end, a plurality of fixed columns of week side fixedly connected with of fixed rim plate outer wall, it is a plurality of the equal sliding connection in center that fixed rim plate one end was kept away from to the fixed column has flexible post, and is a plurality of the equal fixedly connected with of one end that fixed rim plate was kept away from to flexible post divides the rim plate, a plurality ofly and the corresponding check valve that admits air of fixed column are installed to week side of fixed rim plate inner wall, and is a plurality of electromagnetic exhaust valve is all installed to the outer wall of fixed column.

Preferably, two the installation base is the symmetrical structure setting in the both sides of support frame bottom, and two installation bases that are the symmetrical structure setting in the both sides of support frame bottom can play stable supporting role.

Preferably, the fixed wheel disc is fixedly connected with the input end of the gear transmission case through a plurality of fixing bolts, so that the fixed wheel disc can drive the input end of the gear transmission case to synchronously rotate.

Preferably, a plurality of threaded holes corresponding to the fixing screws are formed in the periphery of the front end of the fixing wheel disc, so that the fixing screws can be conveniently installed and fixed.

Preferably, the front end cover is provided with an air inlet hole corresponding to the rotary air inlet port at the center, the rotary air inlet port is communicated with the cavity of the fixed wheel disc, and the rotary air inlet port is rotatably connected with the fixed wheel disc, so that the air inlet pipe can supply air to the center of the fixed wheel disc, and the rotation of the fixed wheel disc is not influenced.

Preferably, the multiple groups of telescopic columns and the branch wheel discs are fixed through welding, so that connection firmness and stability can be guaranteed, and meanwhile, the telescopic columns cannot be easily damaged.

Preferably, a plurality of the centers of the outer sides of the branch wheel discs are provided with limit grooves corresponding to the transmission belt, and the limit grooves can limit the rotation of the transmission belt.

The utility model has the following beneficial effects:

1. the utility model can carry out stepless speed regulation without changing the power and the rotating speed of the motor by designing a simple variable speed regulating mechanism, has more linear speed regulation and does not have the condition of blocking or shaking, thereby greatly improving the integral working efficiency;

2. according to the utility model, through designing a simple transmission mechanism, the radius of the variable speed adjusting mechanism can be adjusted in a pneumatic adjusting mode, so that the rotating speed can be quickly adjusted;

3. by adopting the simple structural design, the utility model can not easily cause danger when hoisting heavy objects at high altitude, thereby greatly reducing the potential safety hazard.

Drawings

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

FIG. 2 is a structural view of the shift adjustment mechanism of the present invention in an extended state;

FIG. 3 is an internal structural view of the fixed sheave of the present invention;

fig. 4 is a schematic structural diagram of the minute wheel disc of the present invention.

In the figure: 1. a support frame; 2. installing a base; 3. a support plate; 4. a drive motor; 5. a gear transmission case; 6. a main drive wheel; 7. a transmission belt; 8. a variable speed adjustment mechanism; 801. fixing the wheel disc; 802. a front end cover; 803. a set screw; 804. a rotary air inlet interface; 805. fixing a column; 806. a telescopic column; 807. dividing the wheel disc; 808. an air inlet check valve; 809. an electromagnetic exhaust valve.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

Referring to fig. 1, a stepless speed regulating device for a tower crane comprises a support frame 1, wherein both sides of the bottom of the support frame 1 are fixedly connected with mounting bases 2, and the center of the top of the support frame 1 is fixedly connected with a support plate 3; two installation bases 2 are the symmetrical structure setting in the both sides of support frame 1 bottom, and two installation bases 2 that are the symmetrical structure setting in the both sides of support frame 1 bottom can play stable supporting role.

As shown in fig. 1, a driving motor 4 and a gear transmission case 5 are respectively installed on two sides of the top of the supporting plate 3, an output end of the driving motor 4 is fixedly connected with a main driving wheel 6, an input end of the gear transmission case 5 is fixedly connected with a variable speed adjusting mechanism 8, and a transmission belt 7 is installed between the main driving wheel 6 and the variable speed adjusting mechanism 8;

as shown in fig. 2 to 4, the variable speed adjustment mechanism 8 includes a fixed wheel disc 801, a front end cover 802 is mounted at the front end of the fixed wheel disc 801, the front end cover 802 is fixedly connected with the fixed wheel disc 801 through a plurality of fixing screws 803, a rotary air inlet port 804 is mounted at the center of the front end cover 802, a plurality of fixing posts 805 are fixedly connected to the peripheral side of the outer wall of the fixed wheel disc 801, telescopic posts 806 are slidably connected to the centers of the ends of the fixing posts 805 far away from the fixed wheel disc 801, sub wheel discs 807 are fixedly connected to the ends of the telescopic posts 806 far away from the fixed wheel disc 801, a plurality of air inlet check valves 808 corresponding to the fixing posts 805 are mounted on the peripheral side of the inner wall of the fixed wheel disc 801, and electromagnetic exhaust valves 809 are mounted on the outer walls of the fixing posts 805; the fixed wheel disc 801 is fixedly connected with the input end of the gear transmission case 5 through a plurality of fixing bolts, so that the fixed wheel disc 801 can drive the input end of the gear transmission case 5 to synchronously rotate; a plurality of threaded holes corresponding to the fixing screws 803 are formed on the periphery of the front end of the fixing wheel disc 801, so that the fixing screws 803 can be conveniently installed and fixed; an air inlet hole corresponding to the rotary air inlet port 804 is formed in the center of the front end cover 802, the rotary air inlet port 804 is communicated with the cavity of the fixed wheel disc 801, and the rotary air inlet port 804 is rotatably connected with the fixed wheel disc 801, so that the air inlet pipe can supply air to the center of the fixed wheel disc 801 and simultaneously the rotation of the fixed wheel disc 801 is not influenced; the multiple groups of telescopic columns 806 and the wheel distributing plate 807 are fixed by welding, so that the firmness and stability of connection can be ensured, and meanwhile, the telescopic columns cannot be easily damaged; the center in a plurality of minutes rim plate 807 outsides has all been seted up with the corresponding spacing recess of drive belt 7, and spacing recess can play limiting displacement to the rotation of drive belt 7.

When the utility model is used, the main driving wheel 6 of the driving motor 4 drives the variable speed adjusting mechanism 8 to rotate by the driving belt 7, the variable speed adjusting mechanism 8 drives the input shaft of the gear transmission case 5 to rotate, when speed adjustment is needed, air can be supplied to the center of the fixed wheel disc 801 by the air inlet pipe connected with the front end of the rotary air inlet interface 804, the air can respectively enter the fixed columns 805 through the air inlet one-way valves 808, and pushes the telescopic columns 806 and the corresponding sub-wheel discs 807 to extend outwards in a radial synchronization manner, so that the radius of the variable speed adjusting mechanism 8 is increased, and under the condition that the output rotating speed of the driving motor 4 is not changed, the rotating speed of the gear transmission case 5 can be reduced, so that stepless speed adjustment is realized.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a stepless speed adjusting device for tower machine, includes support frame (1), its characterized in that: the two sides of the bottom of the support frame (1) are fixedly connected with mounting bases (2), and the center of the top of the support frame (1) is fixedly connected with a support plate (3);

a driving motor (4) and a gear transmission case (5) are respectively installed on two sides of the top of the supporting plate (3), the output end of the driving motor (4) is fixedly connected with a main driving wheel (6), the input end of the gear transmission case (5) is fixedly connected with a variable speed adjusting mechanism (8), and a driving belt (7) is installed between the main driving wheel (6) and the variable speed adjusting mechanism (8);

the speed change adjusting mechanism (8) comprises a fixed wheel disc (801), a front end cover (802) is arranged at the front end of the fixed wheel disc (801), the front end cover (802) is fixedly connected with the fixed wheel disc (801) through a plurality of fixing screws (803), a rotary air inlet port (804) is installed at the center of the front end cover (802), a plurality of fixing columns (805) are fixedly connected to the peripheral side of the outer wall of the fixed wheel disc (801), telescopic columns (806) are slidably connected to the centers of the ends, far away from the fixed wheel disc (801), of the fixing columns (805), a sub wheel disc (807) is fixedly connected to one end, far away from the fixed wheel disc (801), of the telescopic columns (806), a plurality of air inlet one-way valves (808) corresponding to the fixed columns (805) are installed on the peripheral side of the inner wall of the fixed wheel disc (801), and electromagnetic exhaust valves (809) are installed on the outer walls of the fixed columns (805).

2. The stepless speed regulating device for the tower crane according to claim 1, characterized in that: the two mounting bases (2) are arranged at two sides of the bottom of the support frame (1) in a symmetrical structure.

3. The stepless speed regulating device for the tower crane according to claim 1, characterized in that: the fixed wheel disc (801) is fixedly connected with the input end of the gear transmission case (5) through a plurality of fixing bolts.

4. The stepless speed regulating device for the tower crane according to claim 1, characterized in that: the periphery of the front end of the fixed wheel disc (801) is provided with a plurality of threaded holes corresponding to the fixing screws (803).

5. The stepless speed regulating device for the tower crane according to claim 1, characterized in that: an air inlet hole corresponding to the rotary air inlet interface (804) is formed in the center of the front end cover (802), and the rotary air inlet interface (804) is communicated with a cavity of the fixed wheel disc (801).

6. The stepless speed regulating device for the tower crane according to claim 1, characterized in that: the multiple groups of telescopic columns (806) and the wheel distributing disc (807) are fixed through welding.

7. The stepless speed regulating device for the tower crane according to claim 1, characterized in that: the centers of the outer sides of the branch wheel discs (807) are provided with limit grooves corresponding to the transmission belt (7).