Electric device suitable for large-span anti-falling pocket net of variable cross-section beam and use method of electric device

Abstract

The invention discloses an electric device suitable for a large-span anti-falling pocket net of a variable cross-section beam. The driving mechanisms (1) are installed on the two sides of the frame (7) respectively, the tightening truss (5) is installed below the middle of the frame (7), the steel wire mesh (6) is installed below the frame (7), the two ends of the steel wire mesh (6) are connected with the pull rods A (2) respectively, the pull rods A (2) are connected with the adjusting rods (3), the adjusting rods (3) are connected with the pull rods B (4), and the pull rods B (4) are connected with the tightening truss (5). The invention discloses a use method of an electric device suitable for a large-span anti-falling pocket net of a variable cross-section beam. Comprising the following steps; and hoisting, mounting and walking. The frame is simple in structure, easy to operate, capable of preventing down warping of the truss, reducing the weight of the truss, remotely controlled, capable of walking in real time along with the installation progress of the steel beam, capable of achieving automation, capable of adapting to variable cross-section changes of a side girder bottom plate and safe.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge construction, and in particular relates to an electric device for preventing a large-span anti-falling net adapted to a variable-section beam, and also relates to a method for using the device. Background Art

[0002] Cable-stayed bridge steel beam construction generally adopts the method of assembling scattered parts, and the assembly of scattered parts mostly uses bridge cranes to assist in lifting and installing steel beams. During the assembly of steel crossbeams and steel longitudinal beams, workers need to walk to the installed side main beams to install steel crossbeams, and walk to the installed crossbeams to install steel longitudinal beams. In order to ensure the safety of workers during construction and prevent workers from accidentally falling from steel beams into valleys and rivers, causing safety accidents, at present, most similar bridge types do not take any protective measures during construction. Some of them use manual installation of wire rope nets, and then manually move them to each installation section. Although this method can catch workers who accidentally fall during the installation of steel beams and ensure the safety of workers, the installation process and the movement of the nets require manual construction, which increases the risk of workers falling during the installation and movement of the nets, which is unsafe. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide an electric device for preventing the truss from deflecting, reducing the weight of the truss, remotely controlled, and able to move in real time following the progress of steel beam installation to achieve automation, and the ability to adapt to changes in the cross-section of the bottom plate of the side main beam and safely adapt to large-span anti-fall nets of variable-section beams and a method of using the same.

[0004] The present invention discloses an electric device for preventing a large span from falling of a variable-section beam, comprising a driving mechanism, a pull rod A, an adjusting rod, a pull rod B, a tightening truss, a wire mesh, and a frame, and is characterized in that driving mechanisms are respectively installed on both sides of the frame, a tightening truss is installed below the middle of the frame, a wire mesh is installed below the frame, pull rods A are respectively connected at both ends of the wire mesh, pull rod A is connected to the adjusting rod, the adjusting rod is connected to pull rod B, and pull rod B is connected to the tightening truss.

[0005] The driving mechanism consists of a bracket, a lifting cylinder, a wheel frame, a roller, a roller base, and a travel motor. The bracket is equipped with a lifting cylinder, which is connected to the roller base. Wheel frames are respectively installed at both ends of the roller base. The roller insertion shaft is placed on the wheel frame, and the shaft is connected to the travel motor. The bracket is installed on the frame.

[0006] The wheel frame, roller, roller base and travel motor can move up and down on the bracket.

[0007] A method for using an electric device for preventing a large-span anti-falling net adapted to a variable-section beam, characterized by comprising the following steps: 1) Hoisting By rotating the middle of the adjusting rod to make the screw rods at both ends approach the middle, a certain pre-tightening force is applied to the pull rods A and B at both ends of the adjusting rod, and then the whole is hoisted to the side main beam E and hung on the track of the side main beam E, and then several rollers are hung on the tracks on both sides of the joint splicing plate of the side main beam E and the side main beam D respectively; 2) Installation The longitudinal beams, steel cross beams and bridge decks are installed on the side main beams D and E respectively, and the installation is completed; 3) Walking Turn on several travel motor switches, several travel motors drive several rollers to move, several rollers respectively drive the bracket, jacking cylinder, wheel frame, roller base, and travel motor to move. When the rollers pass through the joint splicing plate of side main beams E and side main beams D, control the lifting cylinder to lower the force on several rollers on one side of the splicing plate, control the cylinder to raise several rollers on the other side without force and hang in the air, and after passing the splicing plate, lower the force on the other side of several rollers, and pass through the splicing plate between side main beams A, side main beams B, and side main beams C through the lifting and lowering of the rollers. When walking to side main beams A, side main beams B, side main beams C, side main beams D, connect them with splicing plates, install longitudinal beams, steel cross beams and bridge decks, and install them in sections. The wire mesh is always below the installation site.

[0008] Compared with the prior art, the present invention has obvious beneficial effects. It can be seen from the above technical scheme that: by installing driving mechanisms on both sides of the frame, a tightening truss is installed under the middle of the frame, a wire mesh is installed under the frame, and the two ends of the wire mesh are respectively connected to the pull rod A, the pull rod A is connected to the adjustment rod, the adjustment rod is connected to the pull rod B, and the pull rod B is connected to the tightening truss. A lifting cylinder is installed on the bracket, the lifting cylinder is connected to the roller base, and the two ends of the roller base are respectively installed with a wheel frame, a roller insertion shaft is placed on the wheel frame, and the shaft is connected to the travel motor. The bracket is installed on the frame (7). A number of rollers are driven to move by a number of travel motors, and the rollers respectively drive the bracket, the lifting cylinder, the wheel frame, the roller base, and the travel motor to move. When the rollers pass through the joint splicing plate of the side main beam E and the side main beam D, the lifting cylinder is controlled to lower the force on the rollers on one side of the splicing plate, and the cylinder is controlled to raise the rollers on the other side without force and hang in the air. After passing the splicing plate, the force on the rollers on the other side is lowered again, and the splicing plate between the side main beams A, B, and C is passed by the lifting of the rollers. When the rollers move to the side main beams A, B, C, and D, The truss is connected with a splicing plate, and the longitudinal beam, steel cross beam and bridge deck are installed in sections. The rollers are connected by sections over the plates. The wire mesh is always under the installation and construction site. The truss structure of the present invention is simple, the operation is simple, and the structural force is simple and clear. A tightening adjustment rod is set to apply pre-tightening force to prevent the truss from deflecting and reduce the weight of the truss. The jacking cylinder and the walking motor are controlled by remote control to move in real time following the progress of the steel beam installation to achieve automation. The truss can adapt to the changes in the cross-section of the bottom plate of the side main beam. The truss can be moved in real time following the progress of the steel beam installation to ensure the safety of workers in the event of an accidental fall. The truss structure is simple, the operation is simple, the truss is prevented from deflecting, the weight of the truss is reduced, the truss is remotely controlled, the truss can be moved in real time following the progress of the steel beam installation, and the automation can be achieved. The truss can adapt to the changes in the cross-section of the bottom plate of the side main beam and the safety is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a front view of the present invention; Figure 2 is a top view of the present invention; Figure 3 is a front view of the driving mechanism of the present invention; Figure 4 This is the usage status of the present invention Figure 1 ; Figure 5 This is the usage status of the present invention Figure 2 ; Figure 6 This is the usage status of the present invention Figure 3 ; Figure 7 yes Figure 6 Enlarged view of a.

[0010] Marking in the figure 1. Driving mechanism; 2. Pull rod A; 3. Adjusting rod; 4. Pull rod B; 5. Tightening truss; 6. Wire mesh; 7. Frame; 101. Bracket; 102. Lifting cylinder; 103. Wheel frame; 104. Roller; 105. Roller base; 106. Travel motor; 8. Side main beam A; 9. Side main beam B; 10. Side main beam C; 11. Side main beam D; 12. Side main beam E; 13. Longitudinal beam; 14. Cross beam; 15. Track; 16. Up and down channels. DETAILED DESCRIPTION

[0011] The specific implementation methods, structures, features and functions of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0012] The present invention discloses an electric device for preventing a large span from falling of a variable-section beam, comprising a driving mechanism 1, a pull rod A2, an adjusting rod 3, a pull rod B4, a tightening truss 5, a wire mesh 6 and a frame 7, and is characterized in that: the driving mechanism 1 is respectively installed on both sides of the frame 7, a tightening truss 5 is installed below the middle of the frame 7, a wire mesh 6 is installed below the frame 7, both ends of the wire mesh 6 are respectively connected to the pull rod A2, the pull rod A2 is connected to the adjusting rod 3, the adjusting rod 3 is connected to the pull rod B4, and the pull rod B4 is connected to the tightening truss 5.

[0013] The driving mechanism 1 consists of a bracket 101, a lifting cylinder 102, a wheel frame 103, a roller 104, a roller base 105, and a travel motor 106. The lifting cylinder 102 is installed on the bracket 101, and the lifting cylinder 102 is connected to the roller base 105. Wheel frames 103 are respectively installed at both ends of the roller base 105. The roller 104 is placed on the wheel frame 103 and inserted into the shaft. The shaft is connected to the travel motor 106, and the bracket 101 is installed on the frame 7.

[0014] The wheel frame 103 , the roller 104 , the roller base 105 , and the travel motor 106 can move up and down on the bracket 101 .

[0015] A method for using an electric device for preventing a large-span anti-falling net adapted to a variable-section beam, characterized by comprising the following steps: 1) Hoisting Apply a certain pre-tightening force to the tie rod A2 and the tie rod B4 by rotating the adjusting rod 3, and then hoist the whole to the side main beam E12 and hang it on the track 15 of the side main beam E12, and then hang several rollers 104 on the tracks 15 on both sides of the joint splicing plate of the side main beam E12 and the side main beam D11 respectively; 2) Installation The longitudinal beam 13, the steel cross beam 14 and the bridge deck are installed on the side main beam D11 and the side main beam E12 respectively, and the installation is completed; 3) Walking Turn on the remote control switches of the travel motors 106, the travel motors 106 drive the rollers 104 to travel, and the rollers 104 drive the bracket 101, the lifting cylinder 102, the wheel frame 103, the roller base 105, and the travel motor 106 to travel. When the rollers 104 pass through the joint splicing plate of the side main beam E12 and the side main beam D11, the lifting cylinder 102 is controlled to lower the force on the rollers 104 on one side of the splicing plate, and the cylinder is controlled to raise the other side Several rollers 104 are suspended in the air without force, and after passing over the splicing plate, several rollers 104 on the other side are lowered. The rollers 104 are lifted and lowered to pass over the splicing plates between the side main beams A8, B9, and C10. When they reach the side main beams A8, B9, C10, and D11, they are connected with splicing plates, and the longitudinal beams 13, steel cross beams 14, and bridge decks are installed in sections. The wire mesh 6 is always below the installation site.

[0016] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An electric device for preventing a large-span falling net from a variable-section beam, comprising a driving mechanism (1), a pull rod A (2), an adjusting rod (3), a pull rod B (4), a tightening truss (5), a steel wire mesh (6), and a frame (7), characterized in that; A driving mechanism (1) is installed on both sides of the frame (7), a tightening truss (5) is installed below the middle of the frame (7), a wire mesh (6) is installed below the frame (7), both ends of the wire mesh (6) are connected to a pull rod A (2), the pull rod A (2) is connected to the adjustment rod (3), the adjustment rod (3) is connected to the pull rod B (4), and the pull rod B (4) is connected to the tightening truss (5).

2. The electric device for preventing falling nets with variable cross-section beams and large spans as claimed in claim 1, characterized in that; The driving mechanism (1) is composed of a bracket (101), a lifting cylinder (102), a wheel frame (103), a roller (104), a roller base (105), and a travel motor (106). The lifting cylinder (102) is installed on the bracket (101), the lifting cylinder (102) is connected to the roller base (105), the two ends of the roller base (105) are respectively installed with wheel frames (103), the roller (104) is placed on the wheel frame (103) and inserted into the shaft, the shaft is connected to the travel motor (106), and the bracket (101) is installed on the frame (7).

3. The electric device for preventing falling nets of variable-section beams with large spans as claimed in claim 2, characterized in that; The wheel frame (103), the roller (104), the roller base (105), and the travel motor (106) can move up and down on the bracket (101).

4. A method for using an electric device for preventing falling nets of variable-section beams with large spans, characterized in that; The steps include: 1) Hoisting A certain pre-tightening force is applied to the tie rod A (2) and the tie rod B (4) by rotating the adjusting rod (3), and then the whole is hoisted to the side main beam E (12) and hung on the track (15) of the side main beam E (12), and then a plurality of rollers (104) are respectively hung on the tracks (15) on both sides of the joint splicing plate of the side main beam E (12) and the side main beam D (11); 2) Installation The longitudinal beam (13), the steel cross beam (14) and the bridge deck are respectively installed on the side main beam D (11) and the side main beam E (12), and the installation is completed; 3) Walking The plurality of travel motors (106) are switched on, and the plurality of travel motors (106) drive the plurality of rollers (104) to travel. The plurality of rollers (104) respectively drive the support (101), the lifting cylinder (102), the wheel frame (103), the roller base (105), and the travel motor (106) to travel. When the rollers (104) pass through the joint splicing plate of the side main beam E (12) and the side main beam D (11), the lifting cylinder (102) is controlled to lower the plurality of rollers (104) on one side of the splicing plate, and the cylinder is controlled to raise the force on the other side. The dry roller (104) is suspended in the air without force. After passing over the splicing plate, several rollers (104) on the other side are lowered to bear force. The rollers (104) are raised and lowered to pass over the splicing plates between the side main beams A (8), the side main beams B (9), and the side main beams C (10). When the rollers (104) are moved to the side main beams A (8), the side main beams B (9), the side main beams C (10), and the side main beams D (11), the splicing plates are used to connect them, and the longitudinal beams (13), the steel cross beams (14), and the bridge deck are installed in sections. The steel mesh (6) is always below the installation construction site.

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