Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the cantilever and the dust removal equipment for the large box girder manufacturing workshop, wherein the length of the cantilever and the dust removal equipment can meet the covering and using requirements of an ultra-wide workshop, and the cantilever and the dust removal equipment can rotate for 180 degrees.
In order to achieve the purpose, the invention adopts the following technical scheme:
on one hand, the cantilever for the large box girder manufacturing workshop comprises a driving arm, a manual arm, an air suction arm, a cantilever support and a suspension support;
the cantilever support is arranged on the upright post, and a driving motor and an induced draft fan are arranged on the cantilever support and used for driving the driving arm to rotate;
the suspension support is arranged on the upright column and is positioned above the cantilever support, and the suspension support is connected with a rigid suspension and a flexible suspension;
the rigid suspension is connected to the rear end of the driving arm, and the flexible suspension is connected to the front end of the driving arm;
the front end of the driving arm is connected with the rear end of the manual arm through a rotary support, and the front end of the manual arm is connected with the air suction arm;
a plurality of dampers are arranged on the rotary support.
Preferably, an output shaft of the driving motor is provided with a speed reducer, an output shaft of the speed reducer is provided with a driving gear, a driving arm connecting pipe is connected to the rear end of the driving arm, and a driving arm gear is arranged on a flange at the rear end of the driving arm;
the driving gear is meshed with the driving arm gear.
Preferably, the rigid suspension adopts a connecting rod;
the upper end and the lower end of the connecting rod are connected with the suspension support and the rear end of the driving arm through pin shafts;
the top of the rear end of the driving arm is provided with a connecting lug plate, and the lower end of the connecting rod is connected with the connecting lug plate through the pin shaft.
Preferably, the flexible suspension adopts a steel wire rope;
the upper end of the steel wire rope is connected with the suspension support through a shackle, and the lower end of the steel wire rope is connected with the front end of the driving arm through an adjusting screw rod;
the top of the front end of the driving arm is provided with a connecting plate, and the lower end of the steel wire rope is connected with the connecting plate through the adjusting screw rod.
Preferably, the distance between the cantilever support and the upright post is set to be 898 mm-902 mm.
Preferably, the length of the driving arm is 9198 mm-9202 mm.
Preferably, the length of the manual arm is set to be 5898 mm-5902 mm, the pipe diameter is set to be phi 158 mm-phi 162mm, and the wall thickness is set to be 2.5 mm-3.5 mm.
Preferably, the length of the air suction arm is set to be 2998 mm-3002 mm, and the air suction arm is made of aluminum alloy.
Preferably, the number of the dampers is 3 to 5.
On the other hand, the dust removing equipment for the large box girder manufacturing workshop comprises the cantilever for the large box girder manufacturing workshop.
The cantilever and dust removal equipment for the large box girder manufacturing workshop provided by the invention has the following beneficial effects:
1) the cantilever has an ultra-long size, the conventional cantilever which can only cover the working radius of 14 meters at most is used for increasing the length of a driving arm, a manual arm and an air suction arm by thickening a cantilever support, and the coverage radius of the modified operation is increased to 19 meters, so that the coverage use requirement of an ultra-wide workshop is met;
2) in order to ensure the use effect after lengthening, the diameter and the wall thickness of the main pipe of the manual arm are reduced on the premise of not influencing the overall structural strength and the air suction volume, the circular pipe material of the air suction arm is changed into the aluminum alloy material, and the stress condition and the overall stability of the driving gear are prevented from being increased due to the increase of the weight of the cantilever;
3) the cantilever is provided with two-point suspension support in the length direction of the driving arm, the rigid suspension fixation mainly plays a role in reducing the stress condition of the driving arm gear and the motor gear increased due to the lengthening of the cantilever moment when the cantilever rotates integrally, and the flexible suspension (length adjustable) fixation mainly plays a role in adjusting the integral level of the cantilever.
Detailed Description
In order to better understand the technical solutions of the present invention, the following further describes the technical solutions of the present invention with reference to the accompanying drawings and examples.
Referring to fig. 1, the cantilever for a large box girder manufacturing workshop provided by the invention comprises a driving arm 9, a manual arm 10, a suction arm 11, a cantilever support 2 and a suspension support 1.
The cantilever support 2 is arranged on the upright post 100, the cantilever support 2 is provided with a driving motor 4 and an induced draft fan 3, and the driving motor 4 is used for controlling the rotation of the driving arm 9.
The suspension support 1 is also arranged on the upright 100 and is positioned above the cantilever support 2, and the suspension support 1 is connected with a rigid suspension 6 and a flexible suspension 7.
The rigid suspension 6 is attached to the rear end of the drive arm 9 and the flexible suspension 7 is attached to the front end of the drive arm 9.
The front end of the driving arm 9 is connected to the rear end of the manual arm 10 via a rotary support 13, and the front end of the manual arm 10 is connected to the suction arm 11.
The rotary support 13 is provided with 3 to 5 dampers.
The output shaft of the driving motor 4 is provided with a speed reducer, the output shaft of the speed reducer is provided with a driving gear, the rear end part of the driving arm 9 is connected with a driving arm connecting pipe 12, a driving arm gear 5 is arranged on a flange at the rear end of the driving arm, and the driving gear is meshed with the driving arm gear 5.
As shown in fig. 2 to 4, the rigid suspension 6 is a connecting rod.
The upper end and the lower end of the connecting rod are connected with the rear ends of the suspension support 1 and the driving arm 9 through pin shafts 14.
The top of the rear end of the driving arm 9 is provided with a connecting lug plate 15, and the lower end of the connecting rod is connected with the connecting lug plate 15 through a pin shaft 14.
The flexible suspension 7 is a steel wire rope.
The upper end of the steel wire rope is connected with the suspension support 1 through a shackle 16, and the lower end of the steel wire rope is connected with the front end of the driving arm through an adjusting screw 8.
The top of the front end of the driving arm 9 is provided with a connecting plate 17, and the lower end of the steel wire rope is connected with the connecting plate 17 through an adjusting screw 8.
As shown in fig. 5 and fig. 6, in the cantilever of the present invention:
the suspension support 1 is a base for fixing a rigid suspension 6 and a flexible suspension 7.
The cantilever support 2 is a fixed base for installing the cantilever, and a driving motor 4, an induced draft fan 3 and other equipment are also required to be installed on the cantilever support.
The effect of draught fan 3 is: the air suction arm 11 absorbs the welding smoke dust into the main air pipeline through the induced draft fan 3.
The driving motor 4 is used for driving the driving arm gear 5 to control the driving arm 9 to rotate left and right by 180 degrees.
The rigid suspension 6 is used for reducing the stress condition of the driving arm 9 and the motor gear during the rotation process of the cantilever of the invention.
The flexible suspension 7 is used to adjust the levelness of the cantilever of the invention.
The adjusting screw rod 8 is used for adjusting the hanging length of the flexible hanging 7.
The driving arm 9 adjusts the rotation direction of the driving motor 4 through a remote controller, and can control the driving arm 9 to rotate by 180 degrees left and right (as shown by arrows in fig. 6).
The manual arm 10 can be manually operated to control the manual arm 10 to rotate left and right by 360 ° (as shown in fig. 5 and 6).
The air suction arm 11 can be adjusted up, down, left and right manually to control the air suction opening of the air suction arm 11 at a reasonable operation position (as shown by an arrow in fig. 6).
The driving arm connecting pipe 12 can be finely adjusted to ensure the levelness of the connecting flange surfaces at the two ends of the driving arm 9.
The rotary support 13 connects the driving arm 9 and the manual arm 10, the inner bearing can control the manual arm 10 to rotate left and right 360 degrees (as shown by the arrow in fig. 6), and the upper damping can limit the rotational freedom degree of the manual arm 10.
Referring to fig. 1 again, the outward extending distance L1 at the joint of the cantilever support 2 and the upright post 100 is 900mm, and the overall use effect of the cantilever support 2 is not affected after the distance is increased.
The length L2 of the driving arm 9 is increased from 7200mm to 9200mm, in order to ensure the stability of the whole cantilever of the invention, the driving arm 9 is provided with the rigid suspension 6 and the flexible suspension 7, which can effectively reduce the stress condition of the driving gear after the whole cantilever of the invention is lengthened.
The length L2 of the manual arm 10 is increased from 4400mm to 5900mm, the pipe diameter is reduced from phi 219mm to phi 160mm, the wall thickness is reduced from 5mm to 3mm, and finally the weight of the whole lengthened cantilever is kept consistent.
The length L3 of the suction arm 11 is increased from the original 2000mm to 3000mm, and the original hard connection iron pipe is changed into the soft connection of the aluminum alloy pipe, which also has the effect of controlling the whole weight of the cantilever of the invention.
The number of the dampers on the rotary support 13 is set to be 5, so that the suspension effect of the manual arm 10 and the suction arm 11 is influenced by lengthening the moment of the manual arm and the suction arm.
Therefore, the whole length L of the cantilever can reach 19 meters, after the cantilever is put into use, the specific operation requirements and action principle of the cantilever are the same as those of the original cantilever (with the length of 14 meters), and other auxiliary operation requirements are not required to be added. And the integral effect of smoke dust removal cannot be influenced due to the fact that the cantilever is lengthened, but the operation coverage radius is increased by 5 meters, and the operation coverage area is increased by 45 percent, so that measures of adding other auxiliary dust removal equipment due to operation blind areas can be effectively avoided.
The invention also provides dust removal equipment for the large box girder manufacturing workshop, which comprises the cantilever for the large box girder manufacturing workshop.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.