CN221253704U - Suspension arm - Google Patents

Abstract

The utility model provides a suspension arm which is used for being arranged on a lifting mechanism, the lifting mechanism is used for connecting a steel wire rope and arranging the steel wire rope on the suspension arm, the suspension arm comprises a main arm, an auxiliary arm and a box girder connecting device, the main arm is connected with the auxiliary arm through the box girder connecting device, the auxiliary arm is obliquely arranged with the main arm, the auxiliary arm comprises more than two supporting pieces, a first reinforcing rib plate, a second reinforcing rib plate and a triangular rib plate are arranged between the adjacent supporting pieces, the first reinforcing rib plate and the second reinforcing rib plate are arranged at the front end and the rear end of the auxiliary arm, the triangular rib plate is at least provided with more than two triangular rib plates, the more than two triangular rib plates are arranged between the first reinforcing rib plate and the second reinforcing rib plate, two sides of the triangular rib plates are respectively connected with the supporting pieces, the first reinforcing rib plate is arranged along the length direction of the box girder connecting device, the bottom end of the first reinforcing rib plate is connected with the upper end of the box girder connecting device, and the strength of the main arm and the auxiliary arm is improved.

Description

Suspension arm

Technical Field

The utility model belongs to the technical field of lifting appliances, and particularly relates to a suspension arm.

Background

In the existing large-scale construction, heavy objects are frequently hung by using a crane, in the process of hanging the heavy objects by using the crane, because the occupied area of some heavy objects is large, the existing hanging tool is used for hanging the heavy objects through the tail end, the position of the heavy objects is required to be lifted by swinging the hanging arm when the heavy objects are hung, when the hanging arm swings to be close to the vertical position, the hanging arm is connected with the heavy objects, so that the hanging arm is easy to contact with the edge of the heavy objects, the hanging of the heavy objects is influenced, the heavy objects are easy to be hung, the situation that the heavy objects fall easily due to friction in the hanging process is easy to appear, and potential safety hazards exist. .

For example, chinese patent application number 201720487030.9 and publication day 2017.12.26 disclose a full-rotation mobile mast crane comprising a lower travelling body; an upper revolving body and a suspension arm; the upper revolving body comprises an upper car body, a right-angle tripod, a tail counterweight and a slewing bearing; the bottom end of the upper vehicle body is provided with a slewing bearing; a right-angle tripod is vertically arranged at the top end of the upper vehicle body; the upper vehicle body is also hinged with a suspension arm; the suspension arm is connected with the right-angle tripod through a lifting amplitude-changing mechanism; limiting components for preventing the suspension arm from overturning are arranged on the right-angle tripod. The mast crane has the advantages of simple structure and convenient use, and effectively improves the stability and safety of the mast crane in the working state.

However, in this structure, the main arm and the auxiliary arm are fixedly connected, so that the auxiliary arm has a small bearing weight, and therefore, the main arm mainly carries out large-scale hoisting through the main hook in the main arm, and the auxiliary arm cannot hoist large-scale objects, so that the safety and reliability cannot be ensured when the auxiliary arm is lifted.

Disclosure of Invention

The utility model aims to provide a suspension arm, which can further improve the reliability of suspension arm lifting, and simultaneously improve the highest lifting height of a main hook, and further ensure the lifting safety and stability.

In order to achieve the above purpose, a davit for install on hoist mechanism, hoist mechanism is connected wire rope and is installed wire rope on the davit, including main arm, auxiliary arm, case roof beam connecting device, the auxiliary arm is connected through case roof beam connecting device to the main arm, and auxiliary arm and main arm slope set up, the auxiliary arm includes more than two support pieces, first deep floor, second deep floor and triangle gusset, is provided with first deep floor, second deep floor and triangle gusset between the adjacent support piece, and first deep floor and second deep floor set up at auxiliary arm front end and rear end, and the triangle gusset is provided with more than two at least, and more than two triangle gusset are installed in the middle of first deep floor and second deep floor, and the both sides of triangle gusset link to each other with support piece respectively, and first deep floor sets up along case roof beam connecting device's length direction, and the bottom of first deep floor links to each other with case roof beam connecting device's upper end.

Above setting, make master arm and auxiliary arm connect through box girder connecting device, and make the auxiliary arm outwards slope set up, make the atress of part disperse to box girder connecting device when the auxiliary arm hangs the goods, reduce the atress pressure of master arm, also improve the lifting height of master arm, be connected with first deep floor on the auxiliary arm between the adjacent support piece, second deep floor and triangle gusset, strengthen the intensity of auxiliary arm, the bottom of first deep floor links to each other with box girder connecting device's bottom simultaneously, thereby on the box girder connecting device is transmitted the atress on the auxiliary arm through first deep floor, reduce the atress on the auxiliary arm, improve the intensity of auxiliary arm.

Further, the second reinforcing rib plate is arranged in parallel with the second reinforcing rib plate.

The device can disperse the force fed back by the weight hung by the steel wire rope at the top end of the auxiliary arm through the horizontal arrangement of the second reinforcing rib plate, so that the strength of the auxiliary arm is further enhanced.

Further, more than two triangular rib plates are arranged in a staggered and spliced mode along the length direction of the auxiliary arm.

The setting is above, through setting up more than two triangle gusset between two parallel arrangement's first deep floor and second deep floor, and triangle gusset is triangle-shaped setting to be different with the first deep floor and the second deep floor setting mode that the level set up, thereby prevent because a plurality of deep floors all are the level setting, thereby the too concentrated condition of stress appears easily in the junction of horizontal direction easily, further increase the intensity of auxiliary arm.

Further, hollowed holes are formed in the first reinforcing rib plate, the second reinforcing rib plate and the triangular rib plate.

Above setting, through the setting of fretwork hole, on the one hand can reduce the weight of auxiliary arm, on the other hand can whole plate body setting for the intermediate position condition of plate body stress is too big takes place.

Further, an auxiliary hook transition pulley and a main hook transition pulley are arranged on one side of the box girder connecting device, and an auxiliary hook is arranged on the other side of the box girder connecting device.

The box girder connecting device is characterized in that one side of the box girder connecting device is provided with a transition pulley, the steel wire rope is stressed through the transition pulley arrangement of the main hook and the auxiliary hook, and the auxiliary hook is arranged on the box girder connecting device, so that the stress on the main arm is reduced.

Further, the top end of the auxiliary arm is provided with a main hook, and projections of the main hook and the auxiliary hook on a horizontal plane are not overlapped when the main hook and the auxiliary hook are lifted.

The main hook and the auxiliary hook are not overlapped, so that the influence of the lifting of the weight on the auxiliary hook by the lifting of the weight on the main hook is prevented.

Further, the box girder connecting device comprises more than two fixing plates and more than two fixing columns, wherein the more than two fixing columns form a frame body structure, the fixing plates are arranged between the more than two fixing columns, and through holes are formed in the more than two fixing plates.

The box girder connecting device is fixed at the top of the main arm through the frame body structure formed by the fixing plates, and through holes are formed in the fixing plates, so that the weight of the box girder connecting device is reduced, and the reliability of connection is ensured.

Further, the main arm, the auxiliary arm and the box girder connecting device are connected by welding.

The arrangement ensures the fixation of the whole mechanism.

Further, the cross section of the hollowed-out hole on the triangular rib plate is triangular.

The triangular hollowed holes can correspond to the triangular rib plates in shape, the symmetrical arrangement of the reserved plate areas on the triangular rib plates is ensured, and the acceptance uniformity is further improved.

Drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is a top view of the present utility model.

FIG. 3 is a schematic view of a boom according to the present utility model.

Fig. 4 is a schematic view of the forearm of the utility model.

Fig. 5 is a schematic view of the main arm of the present utility model.

Fig. 6 is a schematic view of the box girder connection device of the present utility model.

FIG. 7 is a schematic view of a base of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the detailed description.

As shown in fig. 1 to 7, a boom arm is connected to a base of a crane 1, a steel wire rope 3 is arranged on the boom arm 2, the boom arm 2 comprises a main arm 21, an auxiliary arm 22 and a box girder connecting device 23, the main arm 21 is connected with the auxiliary arm 22 through the box girder connecting device 23, the auxiliary arm 22 is obliquely arranged with the main arm 21, the auxiliary arm 22 comprises more than two supporting pieces 20, a first reinforcing rib plate 221, a second reinforcing rib plate 222 and a triangular rib plate 223, the first reinforcing rib plate 221 and the second reinforcing rib plate 222 are respectively arranged at the front end and the rear end of the auxiliary arm 22, the triangular rib plate 223 is at least provided with more than two reinforcing rib plates, the triangular rib plate 223 is arranged between the first reinforcing rib plate 221 and the second reinforcing rib plate 222, two sides of the triangular rib plate 23 are respectively connected with the supporting pieces 20, the first reinforcing rib plate 221 is arranged along the length direction of the box girder connecting device 23, and the bottom end of the first reinforcing rib plate 221 is connected with the upper end of the box girder connecting device 23.

As shown in fig. 2, the second reinforcing rib 221 is disposed in parallel with the first reinforcing rib 222. The two or more triangular rib plates 223 are arranged in a staggered and spliced manner along the length direction of the auxiliary arm 22. In this embodiment, the number of the triangular rib plates 223 is 4, and from the first reinforcing rib plate 221 to the second reinforcing rib plate 222, one triangular rib plate 223 is horizontally placed, the other triangular rib plate 223 is rotated by 90 degrees, and the triangular rib plates 223 are sequentially spliced, and the first reinforcing rib plate 221, the second reinforcing rib plate 222 and the triangular rib plates 223 are provided with hollowed holes 200. In this embodiment, the cross section of the hollowed hole on the triangular rib plate is triangular, and the cross section of the hollowed hole on the first reinforcing rib plate 221 is arc-shaped.

The box girder connecting device 23 comprises more than two fixing plates 231 and more than two fixing columns 232, wherein the more than two fixing columns 232 form a frame structure, the fixing plates 231 are arranged between the more than two fixing columns 232, and through holes 2311 are formed in the more than two fixing plates 231.

As shown in fig. 3 and 4, one side of the box girder connection device 23 is provided with a transition pulley 224, the transition pulley 224 includes a secondary hook transition pulley 2241 and a primary hook transition pulley 2242, and the other side of the box girder connection device 23 is provided with a secondary hook 231. The auxiliary arm 22 and the box girder connecting device 23 are also provided with more than three transition pulleys, the main hook 226 is connected to the transition pulley of the auxiliary arm 22 through the steel wire rope 3 and then connected to the transition pulley of the box girder connecting device 23 and finally connected to the winch of the hoisting mechanism 1, and the transition pulley 224 on the box girder connecting device 23 is arranged closer to the connection part of the steel wire rope 3 than the transition pulley 224 on the auxiliary arm 22.

The box girder connecting device 23 is provided with an auxiliary hook 231, the auxiliary hook 231 is connected with the steel wire rope 3, the steel wire rope 3 is connected to the lifting mechanism 1 through the box girder connecting device 23 to control, the auxiliary hook 231 is controlled by the lifting mechanism 1 to connect with the steel wire rope 3, the auxiliary arm 22 is obliquely arranged on the box girder connecting device 23, and the vertical lifting position of the main hook 226 and the auxiliary hook 231 is not overlapped. The main hook 226 and the auxiliary hook 231 are identical in composition structure, the main hook 226 is larger than the auxiliary hook 231, the main hook and the auxiliary hook both comprise an adjusting block 2261 and a hook portion 2262, the hook portion 2262 is rotatably connected to the adjusting block 2261 through a shaft, the adjusting block 2261 is in rolling connection with a steel wire rope, and lifting of the hook portion 2262 is controlled through the steel wire rope 3. The main arm 21 is provided with guy devices 211, and the lock stabilizing device is arranged at the waist of the boom 2 at the hoisting side of the main arm 21.

As shown in fig. 5, the material of the auxiliary arm 22 is steel. The main hook 226 is designed to provide sufficient structural strength to the secondary arm 22 when it is engaged.

As shown in fig. 7, the lifting mechanism 1 comprises a supporting platform, a motor and a triangular fixing frame, the triangular fixing frame of the motor is mounted on the supporting platform, the steel wire rope 3 is connected to a rope winding motor through the triangular fixing frame, and the supporting platform 12, the motor 11 and the triangular fixing frame 13 are arranged through the lifting mechanism 1, so that stable lifting can be ensured.

The main arm 21 and the auxiliary arm 22 are connected with each other through welding, and the whole mechanism is fixed.

The working principle of the utility model is as follows: the main arm 21 and the auxiliary arm 22 are connected through the box girder connecting device 23, the auxiliary arm 22 is arranged in an outward inclined mode, then the main arm 21 is controlled to swing and lift the main hook 226 and the auxiliary hook 231 through the lifting mechanism 1, the auxiliary arm 22 and the box girder connecting device 23 are provided with the corresponding main hook 226 and the auxiliary hook 231 and are connected through the steel wire rope 3, wherein more than three transition rollers are respectively arranged on the auxiliary arm 22 and the box girder connecting structure, so that the steel wire rope 3 can be transited when being regulated, the transition pulley 224 on the box girder is arranged at a joint which is closer to the steel wire rope 3 than the transition pulley 224 on the auxiliary arm 22, when the main arm 21 is inclined forwards, the steel wire rope 3 connected with the transition pulley on the box girder connecting device 23 is stressed to be increased, so that the stress of the auxiliary arm 22 is reduced, and in addition, the auxiliary arm 22 is provided with the first reinforcing rib plate 221, the second reinforcing rib plate 222 and the triangular rib plate 223, wherein the first reinforcing rib plate 221 and the second reinforcing rib plate 222 are respectively arranged on the front side and the rear sides of the auxiliary arm 22, and the triangular rib plate 223 are respectively, and the two reinforcing rib plates are at least arranged on the two reinforcing rib plates are firmly fixed with the second reinforcing rib plates 221 and the second reinforcing rib plate 222, and the auxiliary rib plate 222 can be firmly fixed with the first reinforcing rib plate and the second reinforcing rib plate 222, and the auxiliary rib plate is well arranged, and the auxiliary rib plate is fixed.

Claims (9)

1. The utility model provides a davit for install on hoisting mechanism, hoisting mechanism is connected and is installed wire rope on the davit to wire rope, its characterized in that: including main arm, auxiliary arm, case roof beam connecting device, the auxiliary arm is connected through case roof beam connecting device to the main arm, and auxiliary arm and main arm slope set up, the auxiliary arm includes more than two support piece, first deep floor, second deep floor and triangle gusset, is provided with first deep floor, second deep floor and triangle gusset between the adjacent support piece, and first deep floor and second deep floor set up at auxiliary arm front end and rear end, and the triangle gusset is provided with more than two at least, and more than two triangle gusset are installed in the middle of first deep floor and second deep floor, and the both sides of triangle gusset link to each other with support piece respectively, and first deep floor sets up along case roof beam connecting device's length direction, and the bottom of first deep floor links to each other with case roof beam connecting device's upper end.

2. A boom as claimed in claim 1, characterized in that: the second reinforcing rib plate is arranged in parallel with the second reinforcing rib plate.

3. A boom as claimed in claim 1, characterized in that: more than two triangular rib plates are arranged in a staggered and spliced mode along the length direction of the auxiliary arm.

4. A boom as claimed in claim 1, characterized in that: the first reinforcing rib plate, the second reinforcing rib plate and the triangular rib plate are provided with hollowed holes.

5. A boom as claimed in claim 1, characterized in that: an auxiliary hook transition pulley and a main hook transition pulley are arranged on one side of the box girder connecting device, and an auxiliary hook is arranged on the other side of the box girder connecting device.

6. A boom as claimed in claim 5, wherein: the top end of the auxiliary arm is provided with a main hook, and projections of the main hook and the auxiliary hook on a horizontal plane are not overlapped when the main hook and the auxiliary hook are lifted.

7. A boom as claimed in claim 1, characterized in that: the box girder connecting device comprises more than two fixing plates and more than two fixing columns, wherein the more than two fixing columns form a frame body structure, the fixing plates are arranged between the more than two fixing columns, and through holes are formed in the more than two fixing plates.

8. A boom as claimed in claim 1, characterized in that: and the main arm, the auxiliary arm and the box girder connecting device are connected by welding.

9. A boom as claimed in claim 4, wherein: the cross section of the hollowed-out hole on the triangular rib plate is triangular.