CN217551547U - High-precision traction device for truss welding - Google Patents

Abstract

The utility model provides a high accuracy draw gear is used in truss welding belongs to truss welding equipment's technical field. The string rib traction device comprises a machine table, wherein a first mounting plate and a second mounting plate are sequentially arranged on the machine table from bottom to top, traction elements used for conveying string ribs are arranged on the first mounting plate and the second mounting plate respectively, the traction elements comprise driving wheels and driven wheels which are arranged side by side, the driving wheels and the driven wheels are used for clamping two sides of the string ribs, and a driving mechanism used for driving the driving wheels to rotate in two directions is arranged on the machine table. When the size of the chord rib in the middle of the truss is changed, the traction direction of the chord rib can be changed by changing the output rotation direction of the driving wheel through changing the driving motor, so that the chord rib is returned from the traction device to be changed, and the specified chord rib needing to be changed in size is only needed to be changed when the chord rib is changed, and a large amount of disassembly and debugging of parts in equipment are not needed any more, so that the method has the advantages of saving raw materials and improving the efficiency of changing the chord rib.

Description

High-precision traction device for truss welding

Technical Field

The utility model relates to a truss welding equipment's technical field especially relates to a high accuracy draw gear is used in truss welding.

Background

In the construction industry, in order to increase various performances of structures such as beam slabs, steel bar trusses are embedded in the beam slabs when pouring concrete of the beam slabs, and the trusses form a group of members of a triangle or a combination of a plurality of triangles in a specific manner. Usually, the truss is formed by welding steel bars, the cross section of the truss is triangular, and the truss integrally comprises an upper chord rib positioned at a top corner, two lower chord ribs positioned at two bottom corners, and wave-shaped web ribs positioned on the two side waists of the truss and used for connecting the upper chord rib and the lower chord ribs.

The patent with the publication number of CN215144305U discloses a truss steel bar traction mechanism, which comprises a frame, wherein the frame is provided with a stepping swing arm, the free end of the stepping swing arm is hinged with one end of a supporting pull rod, the other end of the supporting pull rod is hinged with a re-advancing main board, the re-advancing main board is in transverse sliding fit with the frame, the sliding fit direction of the re-advancing main board is consistent with the feeding direction of chord bars, and at least one group of traction groups for traction the chord bars is arranged on the re-advancing main board; the traction group comprises at least one traction seat, the traction seat comprises an installation seat plate, a first one-way roller and a second one-way roller which float relatively are supported on the side surface of the installation seat plate, the relative floating direction of the two one-way rollers is crossed with the feeding direction of the clamped string rib, the free rotation directions of the two one-way rollers are opposite, and a clamping space of the string rib is formed between the two one-way rollers. The support pull rod is pulled to move in the swinging process of the stepping swing arm, the support pull rod then drives the re-advancing main board to slide, the re-advancing main board drives the traction seat to reciprocate, and the traction seat reciprocates once every time to drive the string rib to move forwards once.

As the chord tendon can only move forward in one direction in the traction seat, when the process size of the truss is changed, the whole machine needs to be stopped, the upper chord tendon, the lower chord tendon, the web tendon and the truss which is welded are cut off before entering the mechanism, the truss is put into operation again after a new chord tendon is replaced, and the chord tendon and the web tendon in the mechanism are discarded, so that great waste is generated.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem among the prior art, the utility model provides a high accuracy draw gear is used in truss welding.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:

the high-precision traction device for truss welding comprises a machine table, wherein a first mounting plate and a second mounting plate are sequentially arranged on the machine table from bottom to top, traction elements for conveying chord ribs are arranged on the first mounting plate and the second mounting plate, the second mounting plate is arranged on the machine table in a sliding manner along the vertical direction, and a lifting assembly for driving the second mounting plate to slide is arranged on the machine table;

the traction element comprises a driving wheel and a driven wheel, the first mounting plate is fixedly provided with two first supporting plates in parallel to the string rib conveying direction, two groups of driving wheels and driven wheels are arranged on the first mounting plate at intervals perpendicular to the string rib conveying direction, the two groups of driving wheels and the driven wheels are respectively arranged on the mutually close wall surfaces of the two first supporting plates in a rotating mode, a second supporting plate is horizontally and fixedly arranged on the second mounting plate, the driving wheels and the driven wheels on the second mounting plate are horizontally and rotatably arranged at the bottom of the second supporting plate, the driving wheels and the driven wheels on the second supporting plate are horizontally arranged at intervals perpendicular to the string rib conveying direction, and a driving mechanism used for driving the driving wheels on the first mounting plate and the second mounting plate to rotate in two directions is arranged on the machine table.

Furthermore, the lifting assembly comprises a screw rod lifter, guide columns and guide cylinders, two guide columns are vertically and parallelly arranged on the machine table, the guide cylinders which are matched with the guide columns one by one are fixedly arranged on the second mounting plate, and the guide cylinders are slidably sleeved on the guide columns.

Further, actuating mechanism includes first driving motor and second driving motor, and first driving motor is fixed to be set up on first mounting panel, rotates between two first backup pads and is provided with the driving shaft, and the coaxial fixed connection of action wheel in two first backup pads is on the driving shaft, and first driving motor is used for ordering about the driving shaft and rotates, and second driving motor is fixed to be set up on the second mounting panel, and second driving motor is used for ordering about the action wheel rotation in the second backup pad.

Furthermore, the traction elements on the first supporting plate and the second supporting plate are arranged in two groups at intervals along the conveying direction of the string ribs, and the first driving motor and the second driving motor drive the two groups of traction elements arranged at intervals along the conveying direction of the string ribs to rotate simultaneously through the linkage assembly.

Furthermore, the linkage assembly comprises a gear box, a driving gear and two driven gears are arranged in the gear box in a rotating mode, the two driven gears are located on two sides of the driving gear respectively and are meshed with the driving gear simultaneously, the two driven gears are fixedly connected with driving wheels in the two groups of traction elements in a coaxial mode respectively, and the driving gear is fixedly connected with an output shaft of the first driving motor or the second driving motor in a coaxial mode.

Furthermore, a first sliding block is arranged on the first supporting plate in a sliding mode along the vertical direction, a driven wheel on the first supporting plate is arranged on the first sliding block in a rotating mode, a first limiting bolt is further connected to the first supporting plate in a threaded mode along the sliding direction of the first sliding block, one end of the first limiting bolt is connected with the first sliding block, a second sliding block is arranged on the second supporting plate in a sliding mode perpendicular to the chord rib conveying direction, the driven wheel on the second supporting plate is arranged on the second sliding block in a rotating mode, a second limiting bolt is connected to the second supporting plate in a threaded mode along the sliding direction of the second sliding block, and one end of the second limiting bolt is connected with the second sliding block.

Furthermore, a first abdicating spring is sleeved on the first limiting bolt, one end of the first abdicating spring is fixedly connected with the first limiting bolt, the other end of the first abdicating spring is fixedly connected with the first sliding block, a second abdicating spring is sleeved on the second limiting bolt, and one end of the second abdicating spring is fixedly connected with the second limiting bolt, and the other end of the second abdicating spring is fixedly connected with the second sliding block.

Furthermore, one side of the first support plate, which is located on the first slider and is far away from the first abdicating spring, is provided with a first damping spring, one end of the first damping spring is fixedly connected with the first support plate, the other end of the first damping spring is fixedly connected with the first slider, the first damping spring is used for ordering the first slider to be close to the first limiting bolt, two sides of the second support plate, which are located on the second slider and are far away from the second abdicating spring, are provided with a second damping spring, two ends of the second damping spring are fixedly connected with the second support plate, and the other two ends of the second damping spring are fixedly connected with the second slider, and the second damping spring is used for ordering the second slider to be close to the second limiting bolt.

Furthermore, the side walls of the driving wheel and the driven wheel are provided with anti-skid grains.

Furthermore, a limiting groove is formed in the side wall of the driving wheel along the circumferential direction of the driving wheel.

The utility model discloses a high accuracy draw gear is used in truss welding, including the board, first mounting panel and second mounting panel have set gradually from bottom to top on the board, all are provided with the traction element who is used for carrying the string muscle on the first mounting panel and on the second mounting panel, and the second mounting panel is established on the board along vertical direction slip. The traction element comprises a driving wheel and a driven wheel which are arranged in parallel, the driving wheel and the driven wheel are clamped on two sides of the string rib, and a driving mechanism used for driving the driving wheel on the first mounting plate and the driving wheel on the second mounting plate to rotate in two directions is arranged on the machine table.

The utility model has the advantages that: when the size of the chord rib in the middle of the truss is changed, the traction direction of the chord rib can be changed by changing the output rotation direction of the driving wheel by the driving motor with the help of friction force, so that a worker can conveniently return the chord rib from the original path of the traction device when the chord rib is changed, and compared with the prior art, the chord rib in the traction device is cut off, and raw materials are saved. And when the string rib is replaced, only the specified string rib with the size needing to be changed is replaced, and the string rib is not needed to be disassembled and debugged in a large quantity, so that the string rib is replaced more quickly and conveniently.

Drawings

Fig. 1 is an overall structural schematic diagram of a high-precision traction device for truss welding according to an embodiment of the present application.

Fig. 2 is an overall structural schematic diagram of another perspective of the traction device according to the embodiment of the present application.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic diagram of a traction element on a second mounting plate according to an embodiment of the present application.

FIG. 5 is a schematic view of an internal structure of a linkage assembly according to an embodiment of the present disclosure.

Fig. 6 is a schematic structural diagram of a driving wheel according to an embodiment of the present application.

Fig. 7 is an overall structural diagram of a further perspective of the traction device according to the embodiment of the present application.

Wherein, 1, a machine table; 2. a first mounting plate; 21. a first support plate; 22. a drive shaft; 23. a first slider; 24. a first limit bolt; 25. a first abdicating spring; 26. a first damping spring; 3. a second mounting plate; 31. a second support plate; 32. a second slider; 33. a second limit bolt; 34. a second abdicating spring; 35. a second damping spring; 4. a traction element; 41. a driving wheel; 411. a limiting groove; 42. a driven wheel; 43. anti-skid lines; 5. a lifting assembly; 51. a screw rod lifter; 52. a guide post; 53. a guide cylinder; 6. a drive mechanism; 61. a first drive motor; 62. a second drive motor; 7. a linkage assembly; 71. a gear case; 72. a driving gear; 73. a driven gear.

Detailed Description

For better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments.

The embodiment of the utility model provides a high accuracy draw gear is used in truss welding for the high-speed welding system of full-automatic truss, the high-speed welding system of full-automatic truss is including the straightener that sets gradually, high accuracy draw gear, bender and welding machine are used for the alignment reinforcing bar to the truss welding, and draw gear is used for pulling the chord muscle and is advancing in the system, and the bender is used for buckling the web muscle, and the welding machine is used for chord muscle and web muscle welded fastening. The straightening machine can adopt a truss welded steel bar straightening mechanism in a patent with the publication number of CN214263674U, the bending machine can adopt a truss welded web bar device in a patent with the publication number of CN213826777U, and the welding machine can adopt a truss welded steel bar welding mechanism in a patent with the publication number of CN 214444086U.

Referring to fig. 1, in the embodiment of the present application, the traction device includes a machine table 1, a first mounting plate 2 and a second mounting plate 3 are sequentially arranged on the machine table 1 from bottom to top in parallel, traction elements 4 for conveying the chord ribs are arranged on the first mounting plate 2 and the second mounting plate 3, the traction elements 4 have a function of bidirectionally drawing the steel bars, and two groups of lower traction devices are arranged at intervals perpendicular to the conveying direction of the chord ribs for conveying two lower chord ribs of the truss. Second mounting panel 3 slides along vertical direction and establishes on board 1, is provided with on board 1 to be used for driving about the gliding lifting unit 5 of second mounting panel 3.

The traction of the chord rib and the bending of the web rib are separated into a traction device and a bending machine, and the traction element 4 used for traction of the chord rib in the traction device has a bidirectional traction function, so that when the size of partial chord ribs in the middle of the truss is changed, the whole machine is stopped, the chord rib to be changed is cut from the front of the truss after the welding work is finished, and the specified chord rib is reversely pulled by the traction element 4 to exit from the welding machine, the bending machine and the traction machine. After the new chord rib is replaced, the specified chord rib is continuously sent to the cutting position by the traction element 4, the truss welding work in the new process can be continuously carried out, waste materials are not generated, a large amount of raw materials are saved, parts in equipment do not need to be debugged when the chord rib is replaced, and the chord rib is replaced more quickly and conveniently.

Referring to fig. 2 and 3, specifically, in the embodiment of the present application, two first support plates 21 are fixedly mounted on the first mounting plate 2 perpendicularly and parallel to the conveying direction of the chord rib by means of welding, bolting, or the like, and the two first support plates 21 are disposed opposite to each other. A second support plate 31 is fixedly mounted on the second mounting plate 3 by means of welding, bolting, and the like, and the second support plate 31 is located at the lower edge of the second mounting plate 3. The traction element 4 comprises a driving wheel 41 and a driven wheel 42, two groups of driving wheels 41 and driven wheels 42 are arranged on the first mounting plate 2 at intervals and perpendicular to the conveying direction of the string ribs, a driving shaft 22 is rotatably mounted between the two first support plates 21, the axis of the driving shaft 22 is horizontal and perpendicular to the conveying direction of the string ribs, and two ends of the driving shaft 22 are rotatably connected to the two first support plates 21 through bearings respectively. Two driving wheels 41 of two groups of traction elements 4 on the first mounting plate 2 are coaxially fixedly sleeved on the driving shaft 22, and driven wheels 42 of two groups of traction elements 4 on the first mounting plate 2 are respectively arranged on the side walls of the two first supporting plates 21 close to each other and are arranged in a way of rotating relatively to the corresponding first supporting plates 21. The driving wheel 41 and the driven wheel 42 on the first supporting plate 21 are arranged at intervals along the vertical direction, and a first feeding port is reserved between the driving wheel 41 and the driven wheel 42 and is used for the lower chord rib to pass through.

Referring to fig. 4, the driving wheel 41 and the second driven wheel 42 of the traction element 4 on the second mounting plate 3 are both rotatably mounted on the bottom wall of the second support plate 31, the driving wheel 41 and the driven wheel 42 on the second mounting plate 3 are horizontally arranged at intervals perpendicular to the conveying direction of the upper chord tendon, the axes of the driving wheel 41 and the driven wheel 42 are both vertical, a second feeding port is reserved between the driving wheel 41 and the driven wheel 42, the upper chord tendon passes through the second feeding port, and the driving wheel 41 and the driven wheel 42 on the second mounting plate 3 are respectively clamped on two sides of the upper chord tendon. The machine table 1 is provided with a driving mechanism 6 for driving the driving wheels 41 on the first mounting plate 2 and the second mounting plate 3 to rotate in two directions.

The driving wheel 41 and the driven wheel 42 clamp the string ribs penetrating between the driving wheel 41 and the driven wheel through friction force, when the driving mechanism 6 is started, the driving wheel 41 is driven to rotate, so that the driving wheel 41 drives the string ribs to advance by means of the friction force, and the direction of the friction force of the driving wheel 41 on the string ribs, namely the traction direction of the string ribs, can be changed by changing the output rotation direction of the driving mechanism 6 on the driving wheel 41. The traction direction of the string rib can be conveniently and rapidly changed, so that a worker can conveniently return the string rib from the original path of the traction device when replacing the string rib, and compared with the prior art, the string rib traction device has the advantages that the string rib is cut off, and raw materials are saved.

In the embodiment of the present application, the driving mechanism 6 includes a first driving motor 61 and a second driving motor 62, the first servo motor is fixedly mounted on the first mounting plate 2 by welding, bolting, etc., an output shaft of the first servo motor is connected with the driving shaft 22 through a reducer, and the first servo motor is used for driving the driving shaft 22 to rotate. The second servo motor is fixedly mounted on the second mounting plate 3 by not being limited to welding, bolt connection and the like, an output shaft of the second servo motor is connected with the driving wheel 41 on the second support plate 31 through a speed reducer, and the second servo motor is used for driving the driving wheel 41 on the second support plate 31 to rotate.

In order to prevent the traction elements 4 from slipping in the process of drawing the chord bars, two groups of traction elements 4 are arranged on the first support plate 21 and the second support plate 31 at intervals along the conveying direction of the chord bars, specifically, four groups of traction elements 4 are arranged on the first mounting plate 2 in a horizontal rectangular shape, each two groups of traction elements 4 are used for drawing a lower chord bar, and two groups of traction elements 4 are arranged on the second mounting plate 3 at intervals along the conveying direction of the upper chord bar and are used for drawing the upper chord bar. First driving motor 61 and second driving motor 62 all order about two sets of traction element 4 rotation that set up along string muscle direction of delivery interval simultaneously through linkage assembly 7, and two driving shafts 22 synchronous rotations on first mounting panel 2 need be ordered about simultaneously to first driving motor 61 promptly.

Referring to fig. 5, in the embodiment of the present application, the linkage assembly 7 includes a gear box 71, and a driving gear 72 and two driven gears 73 are rotatably mounted in the gear box 71, and the two driven gears 73 are respectively located at two sides of the driving gear 72 and simultaneously engaged with the driving gear 72. The rotating shafts of the two driven gears 73 extend out of the gear box 71 and are respectively and coaxially and fixedly connected with the driving wheels 41 in the two groups of traction elements 4, and the rotating shafts of the two driven gears 73 are respectively and coaxially and fixedly connected with the two groups of driving shafts 22 on the first supporting plate 21 on the first mounting plate 2. The rotating shaft of the driving gear 72 extends out of the gear box 71 and is fixedly connected with the output shaft of the first driving motor 61 or the second driving motor 62 through a reducer.

The gear box 71 can be arranged in a sealing mode, lubricating oil can be filled into the gear box 71 to keep the driving gear 72 and the driven gear 73 to be meshed and driven smoothly, and the linkage assembly 7 is utilized to reduce the number of driving sources on the basis of realizing functions, reduce cost and achieve a compact structure.

In order to facilitate the adjustment of the distance between the first feeding port and the second feeding port by a worker when the string rib is replaced, in the embodiment of the present application, a first sliding groove is formed in the first supporting plate 21 on the first mounting plate 2 in the vertical direction, a first sliding block 23 is vertically slidably mounted in the first sliding groove, a corresponding driven wheel 42 on the first supporting plate 21 is rotatably arranged on the corresponding first sliding block 23, and a first limiting bolt 24 for limiting the vertical sliding of the first sliding block 23 on the first supporting plate 21 is arranged on the first supporting plate 21. A second sliding groove is horizontally formed in the second supporting plate 31 on the second mounting plate 3, the second sliding block 32 is installed in the second sliding groove in a sliding mode along the length direction of the second sliding groove, the driven wheel 42 on the second supporting plate 31 is installed on the second sliding block 32 in a rotating mode, and a second limiting bolt 33 used for limiting the second sliding block 32 to slide on the second supporting plate 31 is arranged on the second supporting plate 31.

The width of the first feeding port and the width of the second feeding port can be changed by adjusting the first limiting bolt 24 and the second limiting bolt 33, and after the upper chord rib or the lower chord rib is replaced, the corresponding feeding ports are adjusted, so that the driving wheel 41 and the driven wheel 42 on the first supporting plate 21 or the second supporting plate 31 can be kept attached to the surfaces of the two sides of the lower chord rib or the upper chord rib, the chord ribs are well pulled, and the adjusting mode is simple and quick.

Specifically, in an embodiment of the present application, a first threaded hole penetrating into the first sliding groove is formed in the first supporting plate 21 along the sliding direction of the first sliding block 23, the first limiting bolt 24 is threadedly connected in the first threaded hole, and one end of the first limiting bolt 24 extends into the first sliding groove and is rotatably connected to the side wall of the first sliding block 23. A second threaded hole penetrating into the second sliding groove is formed in the edge of the second supporting plate 31 along the sliding direction of the second sliding block 32, a second limiting bolt 33 is in threaded connection with the second threaded hole, and one end of the second limiting bolt 33 extends into the second sliding groove and is rotatably connected to the side wall of the second sliding block 32.

In another embodiment of the present application, the first limit bolt 24 is screwed on the first support plate 21 along the sliding direction of the first slider 23, one end of the first limit bolt 24 extends into the first sliding slot, one side of the first slider 23 close to the first limit bolt 24 is provided with a first abdicating spring 25, one end of the first abdicating spring 25 is fixedly connected with the first slider 23 by welding or the like, and the other end is fixedly connected to the first limit bolt 24. The second limiting bolt 33 is in threaded connection with the second support plate 31 along the sliding direction of the second sliding block 32, one end of the second limiting bolt 33 extends into the second sliding groove, one side, close to the second limiting bolt 33, of the second sliding block 32 is provided with a second abdicating spring 34, one end of the second abdicating spring 34 is fixedly connected with the second sliding block 32 in a welding mode and the other end of the second abdicating spring is fixedly connected with the second limiting bolt 33.

Through setting up first spring 25 and the second spring 34 of stepping down, when the surperficial unevenness of string muscle, can roll at relative string muscle from driving wheel 42, compress first spring 25 or the second spring 34 of stepping down, the opening size of first pay-off mouth or second pay-off mouth is changed automatically to make string muscle pass through smoothly between first pay-off mouth or second pay-off mouth, ensure to paste tight string muscle from driving wheel 42 all the time, can continuously pull the string muscle of different surface decorative patterns.

Further, in this embodiment of the application, a first damping spring 26 is further disposed on one side of the first sliding chute, which is away from the first limiting bolt 24, of the first sliding chute, one end of the first damping spring 26 is fixed on an inner wall of the first sliding chute, and the other end of the first damping spring 26 is fixed on the first sliding chute 23, and the first damping spring 26 is used for pushing the first sliding chute 23 to slide towards the first limiting bolt 24. A second damping spring 35 is further arranged on one side, away from the second limiting bolt 33, of the second sliding block 32 in the second sliding groove, one end of the second damping spring 35 is fixed to the inner wall of the second sliding groove, the other end of the second damping spring is fixed to the second sliding block 32, and the second damping spring 35 is used for pushing the second sliding block 32 to slide towards the second limiting bolt 33 in the second sliding groove.

When the string rib exits from the first feeding port or the second feeding port, the first sliding block 23 or the second sliding block 32 is easy to pop up and impact on the inner wall of the chute under the elastic force action of the first abdicating spring 25 or the second abdicating spring 34, and damages the driven wheel 42. Through the first damping spring 26 and the second damping spring 35, when the sliding block bounces to the inner wall of the sliding groove, the sliding block can be decelerated and buffered, and the driven wheel 42 can be protected.

With reference to fig. 6, further, in the embodiment of the present application, the side walls of the driving wheel 41 and the driven wheel 42 are both provided with anti-slip patterns 43, the anti-slip patterns 43 are strip-shaped recesses, the anti-slip patterns 43 are respectively provided on the driving wheel 41 and the driven wheel 42 at intervals along the circumferential direction, and the anti-slip patterns 43 on the driving wheel 41 and the driven wheel 42 can be adapted to the patterns on the surface of the string rib, so that the string rib can be engaged better, and the string rib traction is more reliable.

Further, in order to prevent the string rib from slipping out from the side of the first feeding port or the second feeding port in the traction process, in the embodiment of the application, a circle of limiting groove 411 is further formed in the side wall of the driving wheel 41 or the driven wheel 42 along the circumferential direction of the driving wheel, two sides of the limiting groove 411 are both convex, when the string rib is fed into the first feeding port and the second feeding port, the string rib is located in the limiting groove 411 on the driving wheel 41, the string rib can be kept in linear traction, and the string rib is effectively prevented from slipping out from the side of the first feeding port or the second feeding port.

Referring to fig. 7, in the present embodiment, the lifting assembly 5 includes a lead screw lifter 51, a guide post 52, and a guide cylinder 53. Specifically, guide post 52 is vertical fixed mounting has at least two on board 1, and guide cylinder 53 passes through bolt fixed mounting at the back of second mounting panel 3, and guide cylinder 53 and guide post 52 one-to-one, the vertical slip cover of guide post 52 is established on guide post 52. By means of the cooperation of the guide columns 52 and the guide cylinders 53, the vertical lifting of the second mounting plate 3 on the machine table 1 can be smoother. Screw rod lift 51 comprises organism and lead screw, and there is the mount table on the top of guide post 52 through bolt fixed mounting, and the bottom of lead screw is passed through the vertical fixed connection of bolt on the roof of mount table, and the organism passes through bolt fixed mounting at the back of second mounting panel 3, and the lead screw thread is worn to establish in the organism, and screw rod lift 51 is common equipment, and here no longer gives unnecessary details to organism inner structure, and the organism can go up and down on the lead screw under operating condition to it goes up and down to drive second mounting panel 3 and go up draw gear.

The traction element 4 on the second mounting plate 3 and the second support plate 31 can ascend and descend relative to the machine table 1, so that the relative height between the upper traction device and the lower traction device can be changed, different distances between the upper chord rib and the lower chord rib in the trusses with different sizes can be adapted, and the adjustment mode is convenient and quick. And because the limiting groove 411 is formed in the side wall of the driving wheel 41 on the second mounting plate 3 to support the upper chord rib, the position height of the upper chord rib can be adjusted without withdrawing from the tractor, and the tractor is convenient and quick.

In other embodiments, the lifting device may also adopt an air cylinder, and the cylinder body of the air cylinder and the piston rod of the air cylinder are respectively fixed on the mounting table and the second mounting plate 3, so that the second mounting plate 3 can be driven to vertically lift relative to the machine table 1.

In order to adjust the high position of second mounting panel 3 accurately, in this application embodiment, still vertical riveting fixed mounting has the measuring tape on board 1, and the edge of measuring tape laminating second mounting panel 3, the staff can watch the position accuracy of second mounting panel 3 on the measuring tape and calculate the lift height of second mounting panel 3, improves truss size precision.

The utility model discloses a working process does: when the technological dimension of the truss is changed and the dimension of the chord rib in the middle of the truss needs to be changed, the whole machine is stopped, and the friction direction of the driving wheel 41 to the appointed chord rib, namely the traction direction of the chord rib, can be changed by changing the output rotation direction of the driving wheel 41 to the appointed chord rib which needs to be changed by changing the driving motor corresponding to the appointed chord rib. The traction direction of the string rib can be conveniently and rapidly changed, so that a worker can conveniently return the string rib from the original path of the traction device when replacing the string rib, and compared with the prior art, the string rib traction device has the advantages that the string rib is cut off, and raw materials are saved. After a new chord rib is replaced, the driving wheel 41 is driven to rotate by the driving motor from the new forward direction, the chord rib is continuously sent to the cutting position, the truss welding work in the new process can be continuously carried out, waste materials are not generated, a large amount of raw materials are saved, the specified chord rib needing to be changed in size is only required to be replaced when the chord rib is replaced, a large amount of disassembly and debugging of parts in equipment are not required, and the chord rib is replaced more quickly and conveniently.

It should be apparent to those skilled in the art that while the preferred embodiments of the present invention have been described, additional variations and modifications to those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the technical range equivalent to the machine of the claims, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A high-precision traction device for truss welding is characterized by comprising a machine table (1), wherein a first mounting plate (2) and a second mounting plate (3) are sequentially arranged on the machine table (1) from bottom to top, traction elements (4) for conveying chord bars are arranged on the first mounting plate (2) and the second mounting plate (3), the second mounting plate (3) is arranged on the machine table (1) in a sliding mode along the vertical direction, and a lifting assembly (5) for driving the second mounting plate (3) to slide is arranged on the machine table (1);

wherein, traction element (4) are including action wheel (41) and follow driving wheel (42), first mounting panel (2) are on a parallel with the fixed two first backup pad (21) that are provided with of string muscle direction of delivery, perpendicular to string muscle direction of delivery interval is provided with two sets of action wheels (41) and follows driving wheel (42) on first mounting panel (2), two sets of action wheels (41) rotate respectively with follow driving wheel (42) and set up on the wall that two first backup pad (21) are close to each other, horizontal fixed mounting has second backup pad (31) on second mounting panel (3), action wheel (41) on second mounting panel (3) and follow the equal level of driving wheel (42) and rotate the bottom that sets up in second backup pad (31), action wheel (41) on second backup pad (31) and follow driving wheel (42) perpendicular to string muscle direction of delivery horizontal interval set up, be provided with on board (1) and be used for ordering about action wheel (41) two-way rotation's actuating mechanism (6) on first mounting panel (2) and second mounting panel (3).

2. The high-precision traction device for truss welding according to claim 1, wherein the lifting assembly (5) comprises a screw rod lifter (51), guide columns (52) and guide cylinders (53), two guide columns (52) are vertically and parallelly arranged on the machine table (1), the guide cylinders (53) which are matched with the guide columns (52) one by one are fixedly arranged on the second mounting plate (3), and the guide cylinders (53) are slidably sleeved on the guide columns (52).

3. The high-precision traction device for truss welding according to claim 1, wherein the driving mechanism (6) comprises a first driving motor (61) and a second driving motor (62), the first driving motor (61) is fixedly arranged on the first mounting plate (2), a driving shaft (22) is rotatably arranged between the two first supporting plates (21), driving wheels (41) on the two first supporting plates (21) are coaxially and fixedly connected to the driving shaft (22), the first driving motor (61) is used for driving the driving shaft (22) to rotate, the second driving motor (62) is fixedly arranged on the second mounting plate (3), and the second driving motor (62) is used for driving the driving wheels (41) on the second supporting plate (31) to rotate.

4. The high-precision traction device for truss welding according to claim 3, wherein two groups of traction elements (4) are arranged on the first support plate (21) and the second support plate (31) at intervals along the conveying direction of the chord member, and the first driving motor (61) and the second driving motor (62) drive the two groups of traction elements (4) at intervals along the conveying direction of the chord member to rotate simultaneously through the linkage assembly (7).

5. The high-precision traction device for truss welding according to claim 4, wherein the linkage assembly (7) comprises a gear box (71), a driving gear (72) and two driven gears (73) are rotatably arranged in the gear box (71), the two driven gears (73) are respectively located on two sides of the driving gear (72) and are simultaneously meshed with the driving gear (72), the two driven gears (73) are respectively and coaxially and fixedly connected with driving wheels (41) in the two groups of traction elements (4), and the driving gear (72) is coaxially and fixedly connected with output shafts of a first driving motor (61) or a second driving motor (62).

6. The high-precision traction device for truss welding according to claim 1, wherein a first sliding block (23) is arranged on the first support plate (21) in a sliding mode in the vertical direction, a driven wheel (42) on the first support plate (21) is rotatably arranged on the first sliding block (23), a first limit bolt (24) is further connected to the first support plate (21) in a threaded mode in the sliding direction of the first sliding block (23), one end of the first limit bolt (24) is connected with the first sliding block (23), a second sliding block (32) is arranged on the second support plate (31) in a sliding mode perpendicular to the chord rib conveying direction, the driven wheel (42) on the second support plate (31) is rotatably arranged on the second sliding block (32), a second limit bolt (33) is connected to the second support plate (31) in a threaded mode in the sliding direction of the second sliding block (32), and one end of the second limit bolt (33) is connected with the second sliding block (32).

7. The high-precision traction device for truss welding according to claim 6, wherein a first abdicating spring (25) is sleeved on the first limiting bolt (24), one end of the first abdicating spring (25) is fixedly connected with the first limiting bolt (24), the other end of the first abdicating spring is fixedly connected with the first sliding block (23), a second abdicating spring (34) is sleeved on the second limiting bolt (33), one end of the second abdicating spring (34) is fixedly connected with the second limiting bolt (33), and the other end of the second abdicating spring is fixedly connected with the second sliding block (32).

8. The high-precision traction device for truss welding according to claim 7, wherein a first damping spring (26) is arranged on one side, away from the first abdicating spring (25), of the first sliding block (23) on the first support plate (21), one end of the first damping spring (26) is fixedly connected with the first support plate (21), and the other end of the first damping spring is fixedly connected with the first sliding block (23), the first damping spring (26) is used for driving the first sliding block (23) to approach the first limiting bolt (24), two sides, away from the second abdicating spring (34), of the second sliding block (32) on the second support plate (31) are provided with a second damping spring (35), two ends of the second damping spring (35) are fixedly connected with the second support plate (31), and the other two ends of the second damping spring are fixedly connected with the second sliding block (32), and the second damping spring (35) is used for driving the second sliding block (32) to approach the second limiting bolt (33).

9. The high-precision traction device for truss welding as defined in claim 6, wherein the side walls of the driving wheel (41) and the driven wheel (42) are provided with anti-skid grains (43).

10. The high-precision traction device for truss welding according to claim 6, wherein a limit groove (411) is arranged on the side wall of the driving wheel (41) along the circumferential direction of the driving wheel.

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