CN219009775U - Combined device with anti-skid function and convenient to move for upper and lower supports of tower crane - Google Patents

Abstract

The utility model discloses a combined device of an upper support and a lower support of a tower crane, which has an anti-skid function and is convenient to move, and the combined device comprises an upper support, a lower support, a rotating mechanism and a connecting assembly, wherein the rotating mechanism comprises a driving motor, a first gear, a second gear, a rotating shaft, a third gear, a fourth gear, a connecting column II and a supporting shaft, the connecting assembly comprises a connecting column I, an electric telescopic rod and a friction pad, the top end of the supporting shaft is fixedly connected with the connecting column I and the electric telescopic rod, the top end of the connecting column I is rotationally connected with the upper support, the electric telescopic rods are provided with four and are distributed in a rectangular shape around the connecting column I, the output ends of the four electric telescopic rods are fixedly connected with the same friction pad, and the friction pad is in sliding connection with the connecting column I. The utility model can reduce the influence of wind power on the tower crane, and prevent the possibility of dumping the tower crane due to overlarge wind power, thereby ensuring the normal use of the tower crane and avoiding accidental casualties.

Description

Combined device with anti-skid function and convenient to move for upper and lower supports of tower crane

Technical Field

The utility model relates to the technical field of tower crane upper and lower supports, in particular to a combined device of a tower crane upper and lower support, which has an anti-slip function and is convenient to move.

Background

The tower crane is a common lifting device on a construction site, materials can be moved through the rotation of the tower crane and the movement of the lifting arm, and the main functions of the upper support and the lower support are to form a bearing rotation mechanism of the tower crane.

The patent 201821467180.4 discloses a "combined device with anti-slip function and convenient to move for tower crane upper and lower support", and this patent is through setting up the drive gear who carries out the drive in the device axis department, and cooperation logical groove, internal tooth and driving motor use in the operation process can directly drive in the rotation axis department of device, and the atress is balanced when making the tower body gyration, improves gyration stationarity, can effectively prevent the unexpected slip of taking place when the device drives.

But this patent has the following problems: when the driving motor stops working, the upper support is in a fixed state under the meshing of the internal teeth and the driving gear, when the direction of the tower crane beam is different from the wind direction, wind power can cause certain influence on the stability of the tower crane, and the larger the wind power is, the more likely the tower crane falls down, so a new combined device is needed to ensure that the tower crane is anti-skidding and convenient to move during working, and the tower crane beam can rotate along with the wind during non-working.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a combined device of an upper support and a lower support of a tower crane, which has an anti-skid function and is convenient to move.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a composite set of tower crane upper and lower support with antiskid function and be convenient for remove, includes upper support, lower support, rotary mechanism and coupling assembling, rotary mechanism includes driving motor, gear No. one, gear No. two, pivot, gear No. three, gear No. four, spliced pole two and back shaft, the cavity has been seted up to the inside of lower support, the back shaft is rotated with the lower support and is connected and the back shaft bottom is located the cavity, back shaft bottom central point puts fixedly connected with spliced pole two, spliced pole two bottom fixed connection gear No. four; the center of the bottom end of the lower support is fixedly connected with a driving motor, the output end of the driving motor is positioned in a cavity and is fixedly connected with a first gear, the bottom end of the cavity is rotationally connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with a second gear, the top end of the rotating shaft is fixedly connected with a third gear, the first gear is meshed with the second gear, and the third gear is meshed with the fourth gear;

the connecting assembly comprises a first connecting column, an electric telescopic rod and friction pads, the first connecting column and the electric telescopic rod are fixedly connected to the top end of the supporting shaft, an upper support is connected to the top end of the first connecting column in a rotating mode, the electric telescopic rods are distributed in a rectangular mode around the first connecting column, the output ends of the electric telescopic rods are fixedly connected with the same friction pads, and the friction pads are connected with the first connecting column in a sliding mode.

Further, the upper fixed edge is fixedly connected with the circumferential surface of the top end of the supporting shaft, the lower fixed edge is fixedly connected with the circumferential surface of the bottom end of the supporting shaft, and the upper fixed edge and the lower fixed edge are both in sliding connection with the lower support.

Further, the upper fixing edge and the lower support are jointly provided with an annular chute, the lower fixing edge and the lower support are jointly provided with an annular chute, the annular chute is connected with balls in a sliding mode, and the balls are provided with a plurality of balls and are uniformly distributed in the annular chute.

Further, the radius of the first gear is smaller than that of the second gear, and the radius of the fourth gear is smaller than that of the third gear.

Further, the lower support, the support shaft, the first connecting column and the upper support are all located on the same central axis, and the support shaft, the upper fixing edge and the lower fixing edge form a rotating structure taking the central axis of the support shaft as an axis.

Further, the top end of the upper support is fixedly connected with an ear plate, four ear plates are arranged and are respectively located at four corners of the top end of the upper support, and the four ear plates are provided with mounting holes.

Further, the bottom end of the lower support is fixedly connected with a fixing frame, the fixing frames are provided with four fixing holes and are uniformly distributed circumferentially, and the four fixing frames are provided with mounting holes.

The utility model has the following beneficial effects:

compared with the prior art, the combined device of the tower crane upper and lower supports with the anti-skid function and convenient to move has the advantages that the supporting shaft is in a slow rotation state by arranging the driving motor and the multi-stage transmission gear, so that the movement and the stop of the tower crane cross beam are more conveniently controlled; when the tower crane is in operation, the friction pads are driven to rise or fall through the four electric telescopic rods, the friction pads can prop against the upper support when rising, under the influence of friction force, the upper support rotates along with the supporting shaft, after the tower crane stops working, the electric telescopic rods drive the friction pads to move downwards, the driving motor stops at the moment, the supporting shaft and the connecting column can not rotate, the upper support connected with the supporting column in a rotating way can rotate, the cross beam is influenced by wind force, and the cross beam is blown to the downwind direction, so that the influence of wind force on the tower crane is reduced, the possibility that the tower crane falls down due to overlarge wind force is prevented, and the accident casualties are avoided while the normal use of the tower crane is ensured.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a partial cross-sectional view of the structure of the present utility model;

FIG. 3 is an elevational partial cross-sectional view of the present utility model;

FIG. 4 is an enlarged schematic view of portion A of FIG. 2 in accordance with the present utility model;

fig. 5 is an enlarged schematic view of portion B of fig. 3 in accordance with the present utility model.

Legend description:

1. an upper support; 2. ear plates; 3. a lower support; 4. a friction pad; 5. an electric telescopic rod; 6. a first connecting column; 7. an upper fixing edge; 8. a support shaft; 9. a lower fixing edge; 10. a driving motor; 11. a first gear; 12. a second gear; 13. a rotating shaft; 14. a third gear; 15. a fourth gear; 16. a second connecting column; 17. a cavity; 18. a fixing frame; 19. a ball; 20. an annular chute.

Detailed Description

The following description of the embodiments of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the combined device with the anti-slip function for the tower crane upper and lower supports convenient to move in the embodiment comprises an upper support 1, a lower support 3, a rotating mechanism and a connecting component, wherein the rotating mechanism comprises a driving motor 10, a first gear 11, a second gear 12, a rotating shaft 13, a third gear 14, a fourth gear 15, a second connecting column 16 and a supporting shaft 8, a cavity 17 is formed in the lower support 3, the supporting shaft 8 is rotationally connected with the lower support 3, the bottom end of the supporting shaft 8 is positioned in the cavity 17, the second connecting column 16 is fixedly connected to the center of the bottom end of the supporting shaft 8, and the fourth gear 15 is fixedly connected to the bottom end of the second connecting column 16; the center of the bottom end of the lower support 3 is fixedly connected with a driving motor 10, the output end of the driving motor 10 is positioned in a cavity 17 and is fixedly connected with a first gear 11, the bottom end of the cavity 17 is rotationally connected with a rotating shaft 13, the outer surface of the rotating shaft 13 is fixedly connected with a second gear 12, the top end of the rotating shaft is fixedly connected with a third gear 14, the first gear 11 is meshed with the second gear 12, and the third gear 14 is meshed with a fourth gear 15;

the connecting assembly comprises a first connecting column 6, an electric telescopic rod 5 and friction pads 4, the first connecting column 6 and the electric telescopic rod 5 are fixedly connected to the top end of a supporting shaft 8, the top end of the first connecting column 6 is rotationally connected with an upper support 1, the electric telescopic rod 5 is provided with four and distributed in a rectangular shape around the first connecting column 6, the output ends of the four electric telescopic rods 5 are fixedly connected with the same friction pads 4, and the friction pads 4 are in sliding connection with the first connecting column 6. When the driving motor 10 is not started, the supporting shaft 8 cannot rotate, at the moment, the electric telescopic rod 5 drives the friction pad 4 to move downwards, the bottom end of the first connecting column 6 is fixedly connected with the supporting shaft 8, the top end of the first connecting column is rotationally connected with the upper support 1, and when the wind power is large, wind blows the tower crane cross beam to rotate, so that the cross beam is in the downwind direction, and the phenomenon that the tower crane is inclined or even collapses due to overlarge wind resistance is avoided; when the tower crane is required to operate, the four electric telescopic rods 5 drive the friction pads 4 to move upwards until the friction pads are propped against the bottom end of the upper support 1, a large amount of friction is generated between the friction pads 4 and the upper support 1 under the thrust of the electric telescopic rods 5, the fixed connection between the upper support 1 and the support shaft 8 is formed, the first gear 11 drives the second gear 12 to rotate under the driving of the driving motor 10, the second gear 12 drives the rotating shaft 13 to rotate, the rotating shaft 13 drives the third gear 14 to rotate, the third gear 14 drives the fourth gear 15 to rotate, and the support shaft 8 rotates under the action of the connecting column two 16 to drive the upper support 1 to rotate, so that the tower crane normally operates.

The upper fixing edge 7 is fixedly connected with the circumferential surface of the top end of the supporting shaft 8, the lower fixing edge 9 is fixedly connected with the circumferential surface of the bottom end of the supporting shaft 8, and the upper fixing edge 7 and the lower fixing edge 9 are both in sliding connection with the lower support 3. The back shaft 8 forms the rotation through last fixed edge 7 and lower fixed edge 9 and hypo support 3 and is connected, when convenient rotation, compares hypo support 3 and connects back shaft 8 through single bearing, can make overall structure more stable.

The upper fixing edge 7 and the lower support 3 are jointly provided with an annular chute 20, the lower fixing edge 9 and the lower support 3 are jointly provided with an annular chute 20, the annular chute 20 is connected with balls 19 in a sliding mode, and the balls 19 are provided with a plurality of balls and are uniformly distributed in the annular chute 20. The balls 19 are fully and uniformly distributed in the annular chute 20, the diameter of the balls 19 is the same as the diameter of the vertical section of the annular chute 20, friction between the supporting shaft 8 and the diameter of the lower support 3 is fully reduced, and the driving motor 10 is convenient to drive the supporting shaft 8 to rotate.

The radius of the first gear 11 is smaller than that of the second gear 12, and the radius of the fourth gear 15 is smaller than that of the third gear 14. The radius of the first gear 11 and the radius of the third gear 14 are smaller than the radius of the second gear 12 and the radius of the fourth gear 15, the pinion drives the large gear, the large gear drives the small gear, and the small gear drives the large gear to form a multi-stage gear rotating device, so that the rotation of the support shaft 8 is more convenient to control, the beam deflection is prevented from being too fast due to too fast rotation speed of the driving motor 10, and the safety accident is avoided.

The lower support 3, the support shaft 8, the first connecting column 6 and the upper support 1 are all positioned on the same central axis, and the support shaft 8, the upper fixing edge 7 and the lower fixing edge 9 form a rotating structure taking the central axis of the support shaft 8 as an axis. The lower support 3, the upper support 1 and the rotating structure are positioned on the same central axis, so that the upper support 1 can be ensured to be more stable during rotation, and the gravity center cannot deviate, thereby ensuring the normal operation of the tower crane.

The top of the upper support 1 is fixedly connected with the lug plates 2, the lug plates 2 are provided with four lug plates and are respectively positioned at four corners of the top of the upper support 1, and the four lug plates 2 are provided with mounting holes. The lug plates 2 are welded with the upper bracket 1, the four lug plates 2 are distributed at four corners of the upper bracket 1, and after the tower crane cross beam is fixedly connected with the matched nuts by bolts, the cross beam and the combined device can be ensured to be connected stably.

The bottom end of the lower support 3 is fixedly connected with fixing frames 18, the fixing frames 18 are provided with four fixing frames 18 and are uniformly distributed circumferentially, and the four fixing frames 18 are provided with mounting holes. The fixing frames 18 are welded with the lower support 3 and are connected with the standard section of the tower crane through bolts and matched nuts, the four fixing frames 18 are evenly distributed, and the combination device is guaranteed to be connected with the standard section of the tower crane stably, so that the stability of the whole tower crane is guaranteed.

Working principle: when the utility model is used, the ear plate 2 and the mounting frame 18 are respectively and fixedly connected to the corresponding positions of the tower crane, when the driving motor 10 is not started, the supporting shaft 8 cannot rotate, the friction pad 4 is abutted against the lower end of the upper support 1 through the four electric telescopic rods 5, the friction pad 4 is fully attached to the lower support 1 under the action of the electric telescopic rods 5, huge friction is generated to form fixed connection between the supporting shaft 8 and the upper support 1, the driving motor 10 drives the first gear 11 to rotate, the first gear 11 is meshed with the second gear 12, the second gear 12 drives the third gear 14 to rotate through the rotating shaft 13, the third gear 14 is meshed with the fourth gear 15, so that the supporting shaft 8 is driven to rotate through the driving connecting column 12, the radiuses of the first gear 11 and the third gear 14 are smaller than the radiuses of the second gear 12 and the fourth gear 15, and therefore the multistage gear transmission device is formed, the rotation of the supporting shaft 8 is more convenient to control, and the tower crane beam is prevented from rotating rapidly due to the fact that the driving motor 10 rotates too fast; the supporting shaft 8 is rotationally connected with the lower support 3 through an upper fixing edge 7 and a lower fixing edge 9 which are fixedly connected, an annular chute 20 is formed between the upper fixing edge 7 and the lower support 3 as well as between the lower fixing edge 9 and the lower support 3, the annular chute 20 and the supporting shaft 8 are positioned on the same central axis, a plurality of balls 19 are uniformly distributed in the annular chute 20, friction between the supporting shaft 8 and the lower support 3 is reduced through the balls 19, and rotation is easier; the first connecting column 6 fixedly connected with the center of the top end of the supporting shaft 8 is rotationally connected with the upper support 1, when the four electric telescopic rods 5 drive the friction pads 4 to be abutted with the bottom end of the upper support 1, a large amount of friction is generated, so that the upper support 1 and the supporting shaft 8 form fixed connection, the driving motor 10 is utilized to drive the tower crane cross beam fixedly connected with the upper support 1 to rotate, when the tower crane does not need to operate, the electric telescopic rods 5 drive the friction pads 4 to move downwards, the driving motor 10 is in a stop state, the supporting shaft 8 cannot rotate, the upper support 1 rotationally connected with the first connecting column 6 can drive the tower crane cross beam to rotate to the downwind direction under the influence of wind force, the tower crane is prevented from being swayed or even collapsed, and therefore the tower crane is guaranteed not to slide during operation, and the cross beam always faces the downwind direction, so that the overall stability of the tower crane is maintained.

The foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. The utility model provides a composite set of tower crane upper and lower support with antiskid function and be convenient for remove, includes upper support (1), lower support (3), rotary mechanism and coupling assembling, its characterized in that: the rotating mechanism comprises a driving motor (10), a first gear (11), a second gear (12), a rotating shaft (13), a third gear (14), a fourth gear (15), a second connecting column (16) and a supporting shaft (8), wherein a cavity (17) is formed in the lower support (3), the supporting shaft (8) is rotationally connected with the lower support (3), the bottom end of the supporting shaft (8) is positioned in the cavity (17), the second connecting column (16) is fixedly connected to the central position of the bottom end of the supporting shaft (8), and the fourth gear (15) is fixedly connected to the bottom end of the second connecting column (16); the center of the bottom end of the lower support (3) is fixedly connected with a driving motor (10), the output end of the driving motor (10) is positioned in a cavity (17) and is fixedly connected with a first gear (11), the bottom end of the cavity (17) is rotationally connected with a rotating shaft (13), the outer surface of the rotating shaft (13) is fixedly connected with a second gear (12) and the top end of the rotating shaft is fixedly connected with a third gear (14), the first gear (11) is meshed with the second gear (12), and the third gear (14) is meshed with a fourth gear (15);

the connecting assembly comprises a first connecting column (6), an electric telescopic rod (5) and a friction pad (4), the first connecting column (6) and the electric telescopic rod (5) are fixedly connected to the top end of the supporting shaft (8), the top end of the first connecting column (6) is rotationally connected with the upper support (1), the electric telescopic rod (5) is provided with four connecting columns which are distributed in a rectangular mode around the first connecting column (6), the output end of the electric telescopic rod (5) is fixedly connected with the same friction pad (4), and the friction pad (4) is in sliding connection with the first connecting column (6).

2. The combined device of the tower crane upper and lower supports with the anti-skid function and convenient movement according to claim 1, wherein the combined device is characterized in that: the upper fixing edge (7) is fixedly connected with the circumferential surface at the top end of the supporting shaft (8), the lower fixing edge (9) is fixedly connected with the circumferential surface at the bottom end of the supporting shaft (8), and the upper fixing edge (7) and the lower fixing edge (9) are both in sliding connection with the lower support (3).

3. The combined device of the tower crane upper and lower supports with the anti-skid function and convenient movement according to claim 2, wherein: the upper fixing edge (7) and the lower support (3) are jointly provided with an annular chute (20), the lower fixing edge (9) and the lower support (3) are jointly provided with an annular chute (20), balls (19) are connected in the annular chute (20) in a sliding mode, and the balls (19) are provided with a plurality of balls and are uniformly distributed in the annular chute (20).

4. The combined device of the tower crane upper and lower supports with the anti-skid function and convenient movement according to claim 1, wherein the combined device is characterized in that: the radius of the first gear (11) is smaller than that of the second gear (12), and the radius of the fourth gear (15) is smaller than that of the third gear (14).

5. The combined device of the tower crane upper and lower supports with the anti-skid function and convenient movement according to claim 2, wherein: the lower support (3), the support shaft (8), the first connecting column (6) and the upper support (1) are all positioned on the same central axis, and the support shaft (8), the upper fixing edge (7) and the lower fixing edge (9) form a rotating structure taking the central axis of the support shaft (8) as an axis.

6. The combined device of the tower crane upper and lower supports with the anti-skid function and convenient movement according to claim 1, wherein the combined device is characterized in that: the utility model discloses a novel ear plate structure, including upper bracket (1), otic placode (2) are fixed connection on upper bracket (1) top, otic placode (2) are equipped with four and are located upper bracket (1) top four corners respectively, four the mounting hole has all been seted up to otic placode (2).

7. The combined device of the tower crane upper and lower supports with the anti-skid function and convenient movement according to claim 1, wherein the combined device is characterized in that: the bottom end of the lower support (3) is fixedly connected with a fixing frame (18), the fixing frames (18) are provided with four fixing holes and are uniformly distributed circumferentially, and the four fixing frames (18) are provided with mounting holes.

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