CN217859581U

CN217859581U - Automatic welding device for grille arch frame

Info

Publication number: CN217859581U
Application number: CN202222344292.3U
Authority: CN
Inventors: 盛鸿超; 乔红彦; 肖伟志; 吴凯; 罗勇; 刘健利; 李彪; 余洋
Original assignee: China Railway 11th Bureau Group Co Ltd; Fifth Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Current assignee: China Railway 11th Bureau Group Co Ltd; Fifth Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-11-22
Anticipated expiration: 2032-08-26

Abstract

The utility model discloses an automatic welding device for a grid arch center, wherein a cantilever beam is horizontally rotated by 360 degrees through a cantilever rotating mechanism and is arranged at the upper end of a cantilever upright post, the cantilever beam and the cantilever upright post are integrally in a shape like a Chinese character '7', a welding assembly is arranged on the cantilever beam in a left-right sliding manner, the welding assembly comprises a portal frame, an upper guide slide block and a lower guide slide block which extend inwards are respectively arranged at the left inner side and the right inner side of the portal frame, and each guide slide block is provided with a welding gun; when the grid arch is horizontally placed and a gap is reserved between the grid arch and the ground, the door-shaped frame can be sleeved in from one end of the grid arch, the four guide sliding blocks are sleeved on the grid arch in a sleeved mode, the cantilever beam horizontally rotates to drive the guide sliding blocks to slide along the extending direction of the main ribs and drive the welding assembly to slide along the extending direction of the cantilever beam, and when a welding gun welding wire touches the gap between the eight ribs and the main ribs in the sliding process, the welding gun discharges to work to form a welding seam. The utility model provides the high welding efficiency of grid bow member octet has reduced workman's intensity of labour.

Description

Automatic welding device for grille arch frame

Technical Field

The utility model relates to a grid bow member processing technology field, in particular to grid bow member automatic welder.

Background

After the tunnel is excavated, the original balance state of the surrounding rock is broken, the surrounding rock and the vault around the tunnel are changed and loosened, in order to prevent excessive displacement and deformation of the surrounding rock disturbed by excavation and reduce sinking and convergence, a reasonable support structure is required to restrict and bear the pressure of the surrounding rock, and the steel arch frame is an important component in the support structure at the initial stage of the tunnel and is also an important content of support before tunnel concrete construction. However, surrounding rocks after tunnel excavation vary widely, in order to timely and quickly meet the requirements of supporting ring formation construction after tunnel excavation and prevent tunnel collapse, steel arches matched with the surrounding rocks must be grasped in the best time to complete the construction, usually, grid arches are adopted for supporting, the grid arches are high in anti-seismic performance, the shearing bearing capacity of reinforced concrete members can be improved, and steel is saved. As shown in fig. 2 and 3, the grid arch 7 is mainly composed of a main rib 71, an eight-joint 72 and a stirrup 73 which are welded together. The side view of the grid arch is the same as the top view, and as can be seen from the figure, in the rectangular frame space enclosed by the four main ribs 71, every two octets are welded together in pairs and then are welded with the main ribs. Each adjacent pair of octets are arranged at 90 ° to each other, i.e. when two pairs of octets are arranged side to side, the two pairs of octets adjacent thereto are arranged one above the other. When the octet itself and the main muscle welding, the tradition way adopts the manual work to weld, wastes time and energy in the operation process, seriously influences the efficiency of construction, and constructor's intensity of labour is great moreover, and welding precision can't guarantee simultaneously, seriously influences the whole quality of grid bow member.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the above-mentioned prior art, the utility model aims at providing a grid bow member automatic welder to solve current grid bow member octet welding inefficiency, the unstable problem of welding quality.

In order to achieve the purpose, the utility model provides a grid bow member automatic welder, including cantilever stand, cantilever rotary mechanism, cantilever beam and welding assembly, the bottom of cantilever stand is fixed on ground or base, the cantilever beam passes through cantilever rotary mechanism and can 360 degrees horizontal rotation ground install in the upper end of cantilever stand, cantilever beam and cantilever stand wholly are "7" font, the welding assembly is installed on the cantilever beam in the horizontal slip, the welding assembly includes door type frame, the inner chamber size of door type frame is greater than the cross section size of grid bow member, is equipped with upper and lower two inside extending's direction slider respectively in the left and right sides of door type frame, and four direction sliders are the rectangle and arrange, and the interval distance between two direction sliders of homonymy matches with the interval distance of upper and lower two main muscle when the grid bow member is kept flat, all is equipped with welder on each direction slider;

when the grid arch is horizontally placed and a gap is reserved between the grid arch and the ground, the door-shaped frame can be sleeved into the grid arch from one end of the grid arch, the four guide sliding blocks are integrally sleeved on the grid arch in a sleeved mode, each guide sliding block is in contact with the corresponding main rib, when the cantilever beam rotates horizontally, the guide sliding blocks can be driven to slide along the extending direction of the main rib of the grid arch, the welding assembly can be driven to slide along the extending direction of the cantilever beam, in the sliding process, when a welding gun welding wire touches a gap between the eight bytes and the main rib, the welding gun forms a current loop to start discharging work to form a welding seam, and when the welding gun leaves the gap between the eight bytes and the main rib, the welding is automatically stopped.

In the scheme, the method comprises the following steps: among four guide slide blocks which are arranged in a rectangular shape, two guide slide blocks which are positioned at the upper part are respectively fixed on a door-shaped frame through a feed screw nut mechanism, two guide slide blocks which are positioned at the lower part are respectively welded on the door-shaped frame, and the upper and lower positions of the guide slide blocks which are positioned at the upper part can be adjusted through the feed screw nut mechanism, so that the spacing distance between the two guide slide blocks at the same side can be adjusted. The specifications of the grid arch frames are different, the spacing distance between the upper main rib and the lower main rib is different when the grid arch frames are horizontally placed, and the spacing distance between the two guide slide blocks on the same side can be adjusted through the screw rod nut mechanism, so that the grid arch frames are suitable for the grid arch frames with different specifications, and the application range of the welding device is effectively enlarged.

In the scheme, the method comprises the following steps: the screw rod and nut mechanism comprises a motor, a screw rod connected to an output shaft of the motor and a nut screwed on the screw rod, the motor is fixed on the door-shaped frame, the screw rod extends up and down, one end, close to the door-shaped frame, of the guide sliding block is fixed on the nut, when the motor drives the screw rod to rotate, the nut can move linearly along the screw rod, and therefore the guide sliding block is driven to move up and down.

In the scheme, the method comprises the following steps: the welding gun head is provided with a displacement device, and can rotate and adjust the position through the displacement device. The gun head of the welding gun is adjusted in advance, so that the welding gun can accurately find the position of the welding seam.

In the scheme, the method comprises the following steps: the bottom mounting of cantilever stand is on the base, the base is equipped with the walking wheel for welding set removes conveniently, and the practicality is strong.

In the scheme, the method comprises the following steps: the cantilever beam is provided with a guide rail along the extending direction of the cantilever beam, the top end of the welding assembly is provided with a sliding device matched with the guide rail, and the welding assembly is arranged on the cantilever beam in a sliding mode through the matching of the sliding device and the guide rail.

The beneficial effects of the utility model are that: when the cantilever beam rotates horizontally, the guide sliding block can be driven to slide along the extending direction of the main rib of the grid arch, the welding assembly can be driven to slide along the extending direction of the cantilever beam, the two actions are linked, so that the guide sliding block can smoothly slide from one end of the main rib of the grid arch to the other end, a welding gun performs welding in sequence in the sliding process, four welding spots can be simultaneously welded, the eight-byte welding efficiency of the grid arch is effectively improved, and the labor intensity of workers is reduced; moreover, the welding device has the advantages of simple structure, low cost, higher welding precision than manual welding, better reliability and capability of ensuring the welding quality.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partial schematic view of the grid arch and a schematic view of eight bytes arranged in pairs of left and right and up and down.

Fig. 3 is a side view of the grid arch.

Detailed Description

As shown in fig. 1-3, an automatic welding device for a grid arch mainly comprises a cantilever upright post 1, a cantilever rotating mechanism 2, a cantilever beam 3 and a welding assembly 4.

The bottom end of the cantilever upright post 1 is fixed on the ground or the base, the cantilever beam 3 can be horizontally and rotatably arranged at the upper end of the cantilever upright post 1 by 360 degrees through the cantilever rotating mechanism 2, and the cantilever beam 3 and the cantilever upright post 1 are integrally shaped like a Chinese character '7'. The welding assembly 4 is installed on the cantilever beam 3 in a left-right sliding mode, the welding assembly 4 comprises a door-shaped frame 5, the size of an inner cavity of the door-shaped frame 5 is larger than the size of the cross section of a grating arch 7, and an upper guide sliding block 6 and a lower guide sliding block 6 which extend inwards are arranged on the left inner side and the right inner side of the door-shaped frame 5 respectively. The four guide sliding blocks 6 are arranged in a rectangular shape, the spacing distance between the two guide sliding blocks 6 on the same side is matched with the spacing distance between the upper main rib 71 and the lower main rib 71 when the grid arch 7 is horizontally placed, and each guide sliding block 6 is provided with a welding gun.

The door-shaped frame 5 can be sleeved in the grid arch 7 from one end of the grid arch 7, the four guide sliding blocks 6 are integrally sleeved on the grid arch 7, and each guide sliding block 6 is in contact with the corresponding main rib 71. When the cantilever beam 3 rotates horizontally, the guide slide block 6 can be driven to slide along the extending direction of the main rib 71 of the grille arch 7, and meanwhile, the welding assembly 4 can be driven to slide along the extending direction of the cantilever beam 3. During the sliding process, when a welding wire of the welding gun touches a gap between the octet 72 and the main rib 71, the welding gun forms a current loop to start discharging work to form a welding seam, and when the welding gun leaves the gap between the octet 72 and the main rib 71, the welding is automatically stopped. The two actions are linked to enable the guide sliding block 6 to smoothly slide from one end of the main rib 71 of the grid arch center 7 to the other end, the welding guns sequentially weld in the sliding process, and can weld four welding points simultaneously, so that the welding efficiency of the eight-joint 72 is effectively improved, and the labor intensity of workers is reduced.

Preferably, among the four guide sliders 6 arranged in a rectangular shape, the two upper guide sliders 6 are fixed to the gantry 5 through a feed screw nut mechanism, the two lower guide sliders 6 are welded to the gantry 5, and the upper and lower positions of the upper guide sliders 6 can be adjusted through the feed screw nut mechanism, so that the distance between the two guide sliders 6 on the same side can be adjusted. The specifications of the grid arch centering 7 are different, the spacing distance between the upper main rib 71 and the lower main rib 71 is different when the welding device is horizontally placed, and the spacing distance between the two guide slide blocks 6 on the same side can be adjusted through the screw rod nut mechanism, so that the welding device is suitable for the grid arch centering 7 with different specifications, and the application range of the welding device is effectively enlarged.

Preferably, the feed screw and nut mechanism comprises a motor, a feed screw connected to an output shaft of the motor, and a nut screwed on the feed screw, the motor is fixed on the portal frame 5, the feed screw extends up and down, one end of the guide slider 6 close to the portal frame is fixed on the nut, and when the motor drives the feed screw to rotate, the nut can do linear motion along the feed screw, so that the guide slider 6 is driven to move up and down, the structure is simple, and the setting is convenient.

Preferably, the welding gun head is provided with a displacement device, the welding gun head can rotate and be adjusted in position through the displacement device, and the welding gun head is adjusted in advance so that the welding gun can accurately find the position of a welding seam. If the welding seams of the left and right arranged octets 72 and the main rib 71 and the welding seams of the up and down arranged octets 72 and the main rib 71 have height difference, the gun head of the welding gun can be set to be automatically controlled, when the gun head of the welding gun is switched from the last pair of octets 72 to the next pair of octets 72 (the adjacent two pairs of octets are arranged at 90 degrees), the gun head of the welding gun can automatically deflect and adjust the position, and can automatically return when continuously entering the next pair of octets 72, the welding wire of the gun head can be more easily and accurately aligned with the welding seams by automatically adjusting the position of the gun head, and the welding precision is ensured.

Preferably, the bottom end of the cantilever upright column 1 is fixed on the base, and the base is provided with the travelling wheels, so that the welding device is convenient to move and high in practicability.

Preferably, the cantilever beam 3 is provided with a guide rail along the extending direction thereof, the top end of the welding assembly 4 is provided with a sliding device matched with the guide rail, and the welding assembly 4 is slidably mounted on the cantilever beam 3 by matching with the guide rail through the sliding device.

The utility model discloses a use method does:

1. the whole grid arch 7 is placed on a plurality of cushion blocks, the cushion blocks are positioned between two adjacent stirrups 73 of the grid arch 7, and the width of the cushion blocks does not exceed the width of the grid arch 7 when the grid arch 7 is placed flatly. The number of the cushion blocks can be three, and the cushion blocks are respectively arranged at two ends and the middle of the grille arch frame 7 in the length direction. The grille arch 7 is arched, and the horizontal placement of the grille arch 7 means that the grille arch 7 is deflected by 90 degrees from the vertical state and is laid down, so that the side surface of the grille arch is contacted with the ground direction, and the side surface of the grille arch is contacted with the cushion block;

2. arranging all the octets 72 to be welded at positions to be welded through a positioning tool; the positioning tool comprises 4 section steels parallel to a main rib 71, all the eight-section steels 72 are connected in series through the 4 section steels parallel to the main rib 71, the 4 section steels are arranged up and down, left and right, 1 section steel is correspondingly connected in series with the eight-section steels 72 in the same direction, each section steel is arranged in an inner ring formed by twisting the corresponding eight-section steel 72 in a penetrating mode, the 4 section steels are bound together through a section steel stirrup, and then the section steels are supported and fixed at corresponding positions through a support, so that all the eight-section steels 72 are located at positions to be welded;

3. the door-shaped frame 5 of the welding device is sleeved into the grid arch 7 from one end of the grid arch 7, the four guide sliding blocks 6 are integrally sleeved on the grid arch 7, each guide sliding block 6 is in contact with the corresponding main rib 71, and the cantilever beam 3 horizontally rotates to drive the guide sliding blocks 6 to slide along the extending direction of the main ribs 71 of the grid arch 7 and drive the welding assembly 4 to slide along the extending direction of the cantilever beam 3. During the sliding process, when a welding wire of the welding gun touches a gap between the octet 72 and the main rib 71, the welding gun forms a current loop to start discharging work to form a welding seam, and when the welding gun leaves the gap between the octet 72 and the main rib 71, the welding is automatically stopped.

Claims

1. The utility model provides a grid bow member automatic welder which characterized in that: the welding device comprises a cantilever upright post (1), a cantilever rotating mechanism (2), a cantilever beam (3) and a welding assembly (4), wherein the bottom end of the cantilever upright post (1) is fixed on the ground or a base, the cantilever beam (3) is horizontally and rotatably arranged at the upper end of the cantilever upright post (1) by 360 degrees through the cantilever rotating mechanism (2), the cantilever beam (3) and the cantilever upright post (1) are integrally in a 7 shape, the welding assembly (4) is arranged on the cantilever beam (3) in a left-right sliding manner, the welding assembly (4) comprises a door-shaped frame (5), the size of an inner cavity of the door-shaped frame (5) is larger than the size of the cross section of a grid arch frame (7), an upper guide sliding block (6) and a lower guide sliding block (6) which extend inwards are respectively arranged on the left inner side and the right inner side of the door-shaped frame (5), the four guide sliding blocks (6) are arranged in a rectangular manner, the interval distance between the two guide sliding blocks (6) on the same side is matched with the interval distance between an upper main rib and a lower main rib (71) when the grid arch frame (7) is flatly placed, and each guide sliding block (6) is provided with a welding gun;

when the grid arch (7) is horizontally placed and a gap is reserved between the grid arch (7) and the ground, the door-shaped frame (5) can be sleeved into the grid arch (7) from one end of the grid arch (7), the four guide sliding blocks (6) are integrally sleeved on the grid arch (7), each guide sliding block (6) is in contact with the corresponding main rib (71), when the cantilever beam (3) rotates horizontally, the guide sliding blocks (6) can be driven to slide along the extending direction of the main rib (71) of the grid arch (7), meanwhile, the welding assembly (4) can be driven to slide along the extending direction of the cantilever beam (3), in the sliding process, when a welding gun welding wire touches the gap between the eight-shaped block (72) and the main rib (71), the welding gun forms a current loop to start discharging work to form a welding line, and when the welding gun leaves the gap between the eight-shaped block (72) and the main rib (71), the welding is automatically stopped.

2. The automatic welding device of a grid arch according to claim 1, characterized in that: among four guide sliders (6) which are arranged in a rectangular shape, two guide sliders (6) which are positioned above are respectively fixed on a door-shaped frame (5) through a screw rod nut mechanism, two guide sliders (6) which are positioned below are respectively welded on the door-shaped frame (5), and the upper and lower positions of the guide sliders (6) which are positioned above can be adjusted through the screw rod nut mechanism, so that the spacing distance between the two guide sliders (6) which are positioned on the same side can be adjusted.

3. The automatic welding device of a grid arch according to claim 2, characterized in that: the screw rod and nut mechanism comprises a motor, a screw rod connected to an output shaft of the motor and a nut in threaded connection with the screw rod, the motor is fixed on the door-shaped frame (5), the screw rod extends up and down, one end, close to the door-shaped frame, of the guide sliding block (6) is fixed on the nut, and when the motor drives the screw rod to rotate, the nut can do linear motion along the screw rod so as to drive the guide sliding block (6) to move up and down.

4. The automatic welding device of a grid arch according to claim 1, characterized in that: the welding gun head is provided with a displacement device, and can rotate and adjust the position through the displacement device.

5. The automatic welding device of a grid arch according to claim 1, characterized in that: the bottom end of the cantilever upright post (1) is fixed on a base, and the base is provided with a traveling wheel.

6. The automatic welding device of a grid arch according to claim 1, characterized in that: the cantilever beam (3) is provided with a guide rail along the extending direction thereof, the top end of the welding assembly (4) is provided with a sliding device matched with the guide rail, and the welding assembly (4) is arranged on the cantilever beam (3) in a sliding mode through the matching of the sliding device and the guide rail.