CN210480690U

CN210480690U - Device convenient to bridge steel sheet lifts by crane

Info

Publication number: CN210480690U
Application number: CN201921118962.1U
Authority: CN
Inventors: 曹增; 张建飞; 孙国金; 颜波
Original assignee: Jiangsu Baigu Steel Structure Engineering Co ltd
Current assignee: Jiangsu Baigu Steel Structure Engineering Co ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-05-08
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a device convenient for lifting a bridge steel plate, which belongs to the field of lifting devices and aims to provide a device which is not easy to tilt when lifting the bridge steel plate, the technical scheme is as follows, the device comprises a lifting arm, a lifting platform and a plurality of lifting components, and the lifting platform is connected with one end of the lifting arm; each lifting component comprises a lifting support rod and a lifting support plate. One end of the lifting support rod is connected with one end, far away from the lifting platform, of the lifting arm, so that the lifting support rod can be conveniently adjusted to the gravity center position of the steel plate. The other end of the lifting support rod is rotatably connected with the lifting support plate. The face, far away from the lifting support rod, of the lifting support plate is provided with four connecting arms distributed in the circumferential direction, the face, far away from the lifting support plate, of each connecting arm is provided with an electro-permanent magnet, and the electro-permanent magnets are connected with a bridge steel plate. The electric permanent magnet attracts the bridge steel plate, and when the bridge steel plate is lifted by the lifting arm, the bridge steel plate is not easy to tilt and fall.

Description

Device convenient to bridge steel sheet lifts by crane

Technical Field

The utility model relates to a hoisting accessory technical field, more specifically say, it relates to a device convenient to bridge steel sheet lifts by crane.

Background

The bridge steel plate is a thick steel plate special for manufacturing bridge structural parts and is made of special steel grade carbon steel and low alloy steel for bridge construction. The bridge steel plate is mainly used for erecting railway bridges, highway bridges, cross-sea bridges and the like. High strength, toughness, load and impact resistance of rolling stock, good fatigue resistance, certain low-temperature toughness and atmospheric corrosion resistance are required.

At present, in the production of enterprises, the lifting and the transferring of bridge steel plates are often involved. Because the weight of the bridge steel plate is large, the steel wire rope penetrates through the bottom of the steel plate during hoisting, then the steel wire rope is connected with the steel wire rope through the hoisting device, and then the steel plate is hoisted through the hoisting steel wire rope. The hoisting mode is single-arm hoisting, and during hoisting, the steel wire rope is in contact with the steel plate of the bridge and applies large force to the edge part of the steel plate of the bridge.

The above prior art solutions have the following drawbacks: the hoisting device easily ignores the gravity center position of the bridge steel plate, so that the bridge steel plate is turned over during hoisting.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a device that bridge steel sheet is difficult for the upset when lifting by crane.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a device convenient for lifting a bridge steel plate comprises a lifting arm, a lifting platform and a plurality of lifting assemblies, wherein the lifting platform is connected with one end of the lifting arm; each lifting assembly comprises a lifting support rod and a lifting support plate; one end of the lifting support rod is connected with one end of the lifting arm far away from the lifting platform, and the other end of the lifting support rod is rotatably connected with the lifting support plate; the side, far away from the lifting support rod, of the lifting support plate is provided with four connecting arms distributed in the circumferential direction, the side, far away from the lifting support plate, of each connecting arm is provided with an electro-permanent magnet, and the electro-permanent magnets are connected with a bridge steel plate.

By adopting the technical scheme, one end of the lifting support rod is hinged with the lifting arm, so that the lifting support rod can be conveniently adjusted to lift the supporting position. The lifting support rod is connected with a lifting support plate, when the lifting support rod is adjusted to the gravity center position of the bridge steel plate, four connecting arms distributed in the circumferential direction on the lifting support plate magnetically attract the bridge steel plate through the electro-permanent magnets. When the lifting arm lifts the bridge steel plate, the bridge steel plate is not easy to fall off and is lifted from the gravity center position, and the bridge steel plate is not easy to tilt.

Furthermore, the electric permanent magnet is electrically connected with a single chip microcomputer, and the single chip microcomputer is located on the lifting platform.

By adopting the technical scheme, the single chip microcomputer is used for controlling the magnetizing and demagnetizing of the electro-permanent magnet. The singlechip is fixed on the lifting platform, and is convenient to operate and maintain.

Furthermore, one side of the lifting platform, which is far away from the single chip microcomputer, is provided with a primary accommodating cavity.

Through adopting above-mentioned technical scheme, lift by crane the platform and be equipped with the one-level and hold the chamber for the installation makes the drive power supply who rises davit work.

Furthermore, the lifting arm comprises a first rotating arm, and a rotating shaft is arranged at one end of the first rotating arm close to the lifting platform; a motor is arranged in the primary accommodating cavity of the lifting platform, and one end of the rotating shaft, which is close to the motor, is connected with an output shaft of the motor; the lifting platform is further internally provided with a bearing and a bearing seat, the bearing seat is sleeved on the rotating shaft, and the bearing seat is fixedly connected with one surface, close to the first rotating arm, of the lifting platform.

Through adopting above-mentioned technical scheme, including one on the davit and lifting by crane platform swivelling joint's first swinging boom, first swinging boom passes through the rotation axis and lifts by crane the epaxial bearing interference fit of bench, and the rotation axis is towards the output shaft of the one end motor of motor, makes the davit can be along the circumference of the bearing in the platform of lifting by crane and be rotary motion.

Furthermore, one end of the first rotating arm, which is far away from the lifting platform, is connected with a second rotating shaft, one end of the second rotating shaft is fixedly provided with a first lifting arm, and the first lifting arm is connected with the lifting support rod; the other end of the second rotating shaft is connected with a worm wheel, the worm wheel is connected with a worm, one end, far away from the worm wheel, of the worm is provided with a second motor, and the worm is connected with a matching shaft of the second motor.

Through adopting above-mentioned technical scheme, first davit and second rotation axis fixed connection together, second rotation axis and first swinging boom swivelling joint. One end of the second rotating shaft, which is far away from the first lifting arm, is driven by a worm gear mechanism and a motor, so that the first lifting arm can move along the circumferential direction of the rotating shaft. The worm gear is arranged between the motor and the second rotating shaft, and the worm gear has reverse self-locking performance, so that the heavy object can be lifted to obtain safety protection.

Furthermore, two ends of the first crane jib in the length direction are respectively provided with a connecting rod, one end of each of the two connecting rods is hinged with the first crane jib, and the other end of each of the two connecting rods is hinged with a connecting rod.

By adopting the technical scheme, the first lifting arm, the connecting rods at the two ends of the first lifting arm in the length direction and the connecting rods are mutually hinged to form a plane four-bar mechanism together, so that the lifting arm can bear larger horizontal force, and when the height of the lifting arm changes, the change of the distance between the front end point of the lifting support rod far away from the first lifting arm and the first lifting arm is smaller, thereby being beneficial to the management of the movement track of the lifting support rod.

Further, the lifting platform comprises a base and a pedestal, and the base is detachably connected with the pedestal; the base is fixedly arranged on the ground.

Through adopting above-mentioned technical scheme, in order to be convenient for lift by crane the platform and lift by crane the being connected of davit, also be convenient for the installation of motor and bearing, lift by crane the platform and divide into base and pedestal two parts to base and pedestal can be dismantled and be connected. The base can pass through bolt fixed mounting subaerial to in the in-process of lifting by crane, the hoisting accessory proves to turn on one's side.

Furthermore, a lifting support is arranged in the base, and one end of the lifting support is fixedly connected with the bottom plate of the base.

By adopting the technical scheme, the lifting support is arranged in the base and is connected with the upper bottom plate and the lower bottom plate of the base, the height of the stacked bridge steel plates lifted can be adjusted as required, the overall height of the lifting device can be adjusted at any time, and the lifting arm can have enough lifting height.

To sum up, the utility model discloses following beneficial effect has:

1. the lifting assembly can lift from the gravity center position, so that the bridge steel plate is not easy to tilt;

2. by the arrangement of the electro-permanent magnet and the single chip microcomputer, the effects that the bridge steel plate is stably connected with the lifting arm, and the bridge steel plate is fixed and loosened quickly in the lifting process can be achieved;

3. the worm and gear arrangement can achieve the effect of enabling the lifting of the bridge steel plate to be safer through reverse self-locking;

4. through the arrangement of the rotating shaft and the second rotating shaft, the effect that the lifting arm can move along the circumferential direction of the lifting platform and can also move along the circumferential direction of the second rotating shaft to lift the bridge steel plate in the largest range can be achieved.

Drawings

FIG. 1 is a schematic structural diagram of a device for facilitating hoisting of a bridge steel plate in the embodiment;

fig. 2 is a schematic cross-sectional view for embodying the structure of the lifting platform in this embodiment.

In the figure, 1, a lifting arm; 11. a first rotating arm; 12. a first boom; 121. a connecting rod; 122. a side link; 13. a second rotation shaft; 131. a worm gear; 132. a worm; 133. a second motor; 14. a rotating shaft; 141. a motor; 142. a bearing; 143. a bearing seat; 2. lifting the platform; 21. a primary accommodating cavity; 22. a base; 23. a pedestal; 24. lifting the support; 3. a hoisting assembly; 31. lifting the support rod; 32. hoisting the supporting plate; 33. a connecting arm; 34. an electro-permanent magnet; 35. a single chip microcomputer; 4. bridge steel plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): referring to fig. 1, the device for conveniently lifting a bridge steel plate comprises a lifting arm 1, a lifting platform 2 and a plurality of lifting assemblies 3, wherein the lifting platform 2 is connected with one end of the lifting arm 1; each lifting assembly 3 comprises a lifting support bar 31 and a lifting support plate 32. One end of the lifting support rod 31 is connected with one end of the lifting arm 1 far away from the lifting platform 2, so that the position of the lifting support rod 31 can be conveniently adjusted to the gravity center position of the bridge steel plate 4. The other end of the lifting support rod 31 is rotatably connected with a lifting support plate 32. Four connecting arms 33 distributed in the circumferential direction are arranged on one surface, away from the lifting support rod 31, of the lifting support plate 32, an electro-permanent magnet 34 is arranged on one surface, away from the lifting support plate 32, of each connecting arm 33, and the electro-permanent magnet 34 is connected with the bridge steel plate 4. The electro-permanent magnet 34 magnetically attracts the bridge steel plate 4, and when the lifting arm 1 lifts the bridge steel plate 4, the bridge steel plate 4 is not easy to fall off. The electric permanent magnet 34 is electrically connected with a single chip microcomputer 35, and the single chip microcomputer 35 is positioned on the lifting platform 2. The single chip microcomputer 35 is used for controlling the magnetizing and demagnetizing of the electro-permanent magnet 34. The single chip microcomputer 35 is fixed on the lifting platform 2, and operation and maintenance are convenient.

Referring to fig. 1, the lifting arm 1 includes a first rotating arm 11, one end of the first rotating arm 11 far from the lifting platform 2 is connected with a second rotating shaft 13, one end of the second rotating shaft 13 is fixedly provided with a first lifting arm 12, and the first lifting arm 12 is connected with a lifting support rod 31; the other end of the second rotating shaft 13 is connected with a worm wheel 131, the worm wheel 131 is connected with a worm 132, one end of the worm 132 far away from the worm wheel 131 is provided with a second motor 133, and the worm 132 is connected with a matching shaft of the second motor 133, so that the first lifting arm 12 can move along the circumferential direction of the rotating shaft 14 (see fig. 2). The worm wheel 131 and the worm 132 are arranged between the motor 141 (see fig. 2) and the second rotating shaft 13, and the lifting arm 1 is safer to lift due to the reverse self-locking performance of the worm wheel 131 and the worm 132. Two ends of the first boom 12 in the length direction are respectively provided with a connecting rod 121, one end of each of the two connecting rods 121 is hinged with the first boom 12, and the other end is hinged with a connecting rod 122. The first boom 12, the connecting rods 121 at the two ends of the first boom 12 in the length direction and the connecting rods 122 are hinged to each other to form a planar four-bar mechanism 121, so that the boom 1 can bear a large horizontal force, and the movement track management of the lifting support rod 31 is facilitated.

Referring to fig. 1 and 2, a rotation shaft 14 is provided at one end of the first rotation arm 11 near the lifting platform 2. One side of the lifting platform 2, which is far away from the single chip microcomputer 35, is provided with a primary accommodating cavity 21. A motor 141 is arranged in the primary accommodating cavity 21 of the lifting platform 2, and one end of the rotating shaft 14 close to the motor 141 is connected with an output shaft of the motor 141; the lifting platform 2 is further provided with a bearing 142 and a bearing seat 143, the bearing 142 is sleeved on the rotating shaft 14, the first rotating arm 11 is in interference fit with the bearing 142 on the lifting platform 2 through the rotating shaft 14, and the lifting arm 1 can rotate along the circumferential direction of the bearing 142 in the lifting platform 2. In order to keep the two ends of the lifting platform 2 balanced, one side of the lifting platform 2 close to the single chip microcomputer 35 is a solid body. The bearing support 143 is fixedly connected to a surface of the lifting table 2 close to the first swing arm 11, and the swing arm is fixed to the lifting table 2 by connecting the bearing 142 to the rotation shaft 14.

Referring to fig. 1, the lifting platform 2 includes a base 22 and a pedestal 23, and the base 22 is detachably connected to the pedestal 23; the base 22 is fixedly mounted on the ground. The base 22 is fixedly mounted on the ground by bolts (not shown) so as to prevent the lifting device from turning over during the lifting process. A lifting support 24 is arranged in the base 22, and the lifting support 24 is fixedly connected with the upper and lower bottom plates of the base 22. The total height of the lifting device can be adjusted at any time according to the stacking height of the bridge steel plates 4 to be lifted, so that the lifting arm 1 can have enough lifting height.

The specific implementation process comprises the following steps: the device convenient for lifting the bridge steel plate 4 comprises a lifting platform 2, a lifting arm 1 and a lifting assembly 3. When the lifting device lifts the bridge steel plate 4, firstly, the base 22 of the lifting platform 2 is fixedly arranged on the ground near the bridge steel plate 4 to be lifted, the motor 141, the bearing 142 and the bearing seat 143 are arranged in the primary accommodating cavity 21 of the pedestal 23, and the rotating shaft 14 of the rotating arm is connected with the bearing 142 in an interference fit manner and is connected with the output shaft of the motor 141. Then, the pedestal 23 is connected to the base 22. And selecting one or more groups of hoisting assemblies 3 on the rotating arm to install according to the weight and the plate size of the bridge steel plate 4 to be hoisted.

The PLC controller (not shown in the figure) is activated to set the boom 1 in motion in the circumferential direction of the first rotation axis 14 and the second rotation axis 13. Then, the lifting bracket 24 in the base 22 is controlled to lift the lifting device to a position where the lifting device is convenient to lift the bridge steel plate 4, the motor 141 is controlled to rotate the first rotating shaft 14, and one side of the lifting arm 1 on which the lifting support rod 31 is mounted is rotated to the position above the bridge steel plate 4. Subsequently, the second motor 133 is controlled to rotate the second rotary shaft 13 slowly, the lifting support rod 31 is rotated to a position above the center of gravity of the bridge steel plate 4, and the rotation of the second rotation is stopped when the electro-permanent magnet 34 on the link arm 33 contacts the bridge steel plate 4. The control single chip microcomputer 35 is electrically connected with the electric permanent magnet 34 for magnetization, and the electric permanent magnet 34 attracts the bridge steel plate 4. And then, controlling the second rotating shaft 13 to slowly lift the lifting arm 1, then controlling the rotating shaft 14 to rotate the circumferential direction of the lifting arm 1, driving the lifted bridge steel plate 4 to be placed on a transport vehicle, and then controlling the singlechip 35 to demagnetize. And controlling the second rotating shaft 13 to lift the lifting arm 1, and controlling the rotating shaft 14 to return to the position above the bridge steel plate 4 to be lifted according to the original circumferential moving track. In order to safely protect the lifting of the lifting arm 1, the worm wheel 131 and the worm 132 are arranged between the second motor 133 and the second rotating shaft 13, and the safety when heavy objects are lifted is improved by utilizing the reverse self-locking performance of the worm wheel 131 and the worm 132.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A device convenient for lifting a bridge steel plate comprises a lifting arm (1), a lifting platform (2) and a plurality of lifting assemblies (3), wherein the lifting platform (2) is connected with one end of the lifting arm (1); the method is characterized in that: each lifting assembly (3) comprises a lifting support rod (31) and a lifting support plate (32); one end of the lifting support rod (31) is connected with one end of the lifting arm (1) far away from the lifting platform (2), and the other end of the lifting support rod is rotatably connected with the lifting support plate (32); the lifting support plate (32) is provided with four connecting arms (33) distributed in the circumferential direction on the surface far away from the lifting support rod (31), an electric permanent magnet (34) is arranged on the surface far away from the lifting support plate (32) of each connecting arm (33), and the electric permanent magnet (34) is connected with a bridge steel plate (4).

2. The device convenient for hoisting bridge steel plates according to claim 1, is characterized in that: the electric permanent magnet (34) is electrically connected with a single chip microcomputer (35), and the single chip microcomputer (35) is located on the lifting platform (2).

3. The device convenient for hoisting bridge steel plates according to claim 2, is characterized in that: one side of the lifting platform (2) far away from the single chip microcomputer (35) is provided with a primary accommodating cavity (21).

4. The device convenient for lifting bridge steel plates according to claim 3, is characterized in that: the lifting arm (1) comprises a first rotating arm (11), and a rotating shaft (14) is arranged at one end, close to the lifting platform (2), of the first rotating arm (11); a motor (141) is arranged in the primary accommodating cavity (21) of the lifting platform (2), and one end, close to the motor (141), of the rotating shaft (14) is connected with an output shaft of the motor (141); the lifting platform (2) is further internally provided with a bearing (142) and a bearing seat (143), the bearing (142) is sleeved on the rotating shaft (14), and the bearing seat (143) is fixedly connected with one surface, close to the first rotating arm (11), of the lifting platform (2).

5. The device convenient for lifting bridge steel plates according to claim 4, is characterized in that: one end, far away from the lifting platform (2), of the first rotating arm (11) is connected with a second rotating shaft (13), one end of the second rotating shaft (13) is fixedly provided with a first lifting arm (12), and the first lifting arm (12) is connected with the lifting support rod (31); the other end of the second rotating shaft (13) is connected with a worm wheel (131), the worm wheel (131) is connected with a worm (132), one end, far away from the worm wheel (131), of the worm (132) is provided with a second motor (133), and the worm (132) is connected with a matching shaft of the second motor (133).

6. The device convenient for hoisting bridge steel plates according to claim 5 is characterized in that: two ends of the first lifting arm (12) in the length direction are respectively provided with a connecting rod (121), one end of each of the two connecting rods (121) is hinged with the first lifting arm (12), and the other end of each of the two connecting rods is hinged with a connecting rod (122).

7. The device for facilitating hoisting of bridge steel plates according to claim 1 or 2, characterized in that: the lifting platform (2) comprises a base (22) and a pedestal (23), wherein the base (22) is detachably connected with the pedestal (23); the base (22) is fixedly arranged on the ground.

8. The device convenient for hoisting bridge steel plates according to claim 7 is characterized in that: the lifting device is characterized in that a lifting support (24) is arranged in the base (22), and the lifting support (24) is fixedly connected with a bottom plate of the base (22).