CN219966832U - Preheating device for medium plate before welding - Google Patents

Abstract

The utility model relates to the technical field of welding preheating appliances, and discloses a preheating device for a medium plate before welding, which comprises a main rod and an air supply system, wherein a quick sucker is fixedly arranged at the bottom end of the main rod, a damping universal hinge support is fixedly arranged at the top end of the main rod, a protective shell with an open front end is fixedly arranged at the top end of the damping universal hinge support, a gun nozzle seat is arranged in the protective shell in a matched manner, and the gun nozzle seat can slide along the inner wall of the protective shell. This preheating device before medium plate welding, whole preheating process need not hold, has reduced workman's intensity of labour, and operating personnel can weld the welding seam that preheats directly when preheating, has saved time, has promoted holistic work efficiency, and a plurality of preheating gun mouths set up the scope that makes a work piece preheat bigger, more even, and the preheating effect is better, and the setting of protective housing can avoid the workman mistake to touch the preheating gun mouth of high temperature at the whole in-process of preheating work, provides the guarantee for production safety.

Description

Preheating device for medium plate before welding

Technical Field

The utility model relates to the technical field of welding preheating appliances, in particular to a preheating device for a medium plate before welding.

Background

The construction period of the large-scale steel structure is longer, the working condition is also complex, the thickness of the used materials is gradually increased, so that more than 100mm steel plates are used for the larger part of materials, in the actual welding process, the welding quality and the service life of a welding joint are guaranteed, the connected welding seams are required to be subjected to welding penetration treatment, accordingly, larger welding seams are generated, the risks of preventing the welding seams and the cracking of a base metal can be met only when the two sides of the welding seam area are respectively in 50mm ranges according to the welding requirements, meanwhile, in order to reduce the deformation caused by welding in the manufacturing process, workpieces are required to be welded at multiple positions simultaneously, so that the whole workpiece is subjected to symmetrical welding operation, in the structural part welding process, the welding positions are heated to the temperature required by the process, and the corresponding welding seams are sequentially welded according to the structure, so that the time is more and more needed.

Because part structure size is great, inconvenient handling back and forth, and under current production mode, in order to reduce the accumulated error that repeated adjustment benchmark brought, the structure is not heated as a whole, preheat before the structure welding mainly adopts preheating gun to preheat, but because current preheating gun is mainly single-headed or double-headed, preheat the regional limited, preheat time just correspondingly increases, simultaneously, no matter roast rifle of single-headed or roast rifle of double-headed, all need the workman to hold preheating gun when preheating, the workman can't carry out other work simultaneously, and the temperature is inhomogeneous in the zone of heating, cause welding quality unstable easily, therefore if can be quick improve preheating temperature, preheat when realizing welding to the welding of close range, reduce workman intensity of labour just very necessary.

Disclosure of Invention

Aiming at the defects and problems of the existing preheating device, the preheating device before welding of the medium plate is unique in structure, convenient to use and capable of carrying out preheating in multiple directions, and the preheating process is not needed to be held by hands, so that the problem that the existing preheating device needs to be held by hands all the time in the using process is effectively solved, and the labor intensity of workers is reduced.

The utility model solves the technical problems by adopting the scheme that: the preheating device before welding the medium plate comprises a main rod and an air supply system, wherein a quick sucker is fixedly arranged at the bottom end of the main rod, a damping universal hinge support is fixedly arranged at the top end of the main rod, a protective shell with an open front end is fixedly arranged at the top end of the damping universal hinge support, a gun nozzle seat is arranged in the protective shell in a matched manner, and the gun nozzle seat can slide along the inner wall of the protective shell and stretches out of the protective shell; the front end of the gun nozzle seat is provided with a plurality of preheating gun nozzles connected with the air supply system; the telescopic adjusting mechanism comprises a rotary driving rod rotatably mounted on the rear side wall of the protective shell, the rear end of the rotary driving rod extends out of the protective shell and is fixedly provided with a first screwing handle, the front end of the rotary driving rod is vertically arranged towards the gun nozzle seat and is sheathed with a rotary running sleeve rod in a threaded manner, the outer ring surface of the rotary running sleeve rod is provided with running teeth along the circumference, and the front end of the rotary running sleeve rod is vertically connected with the gun nozzle seat; the rotary walking loop bar at the rear side of the gun nozzle seat is matched and sleeved with a support frame, the support frame is fixedly connected with the inner wall of the protective shell, and the rotary walking loop bar can rotate and axially slide in the support frame; the driving gear meshed with the walking teeth of the rotary walking loop bar is arranged in the protection shell at the front side or the rear side of the support frame in a matched mode, the driving gear is rotatably installed in the protection shell and is connected with a rotating mechanism in a transmission mode, the rotating mechanism can drive the driving gear to lock the driving gear, and the control end of the rotating mechanism extends out of the protection shell.

Preferably, the inside of the quick sucking disc is movably embedded with a magnetic block.

Preferably, a handle is fixedly arranged at the rear end of the bottom surface of the protective shell.

Preferably, a fixed shaft parallel to the rotary walking loop bar is arranged in the protective shell at the front side of the support frame, the front end and the rear end of the fixed shaft are connected with the inner wall of the protective shell, the driving gear is rotationally sleeved on the fixed shaft and meshed with the rotary walking loop bar walking teeth, the rotating mechanism comprises a worm wheel rotationally sleeved on the fixed shaft at one side of the driving gear, the worm wheel is fixedly connected with the driving gear, a worm is connected with the worm wheel in a meshed manner, the worm is rotationally arranged in the protective shell, and a second screwing handle is fixedly arranged at one end of the worm outwards.

Preferably, the length of the walking teeth is the same as that of the rotary walking loop bar.

Preferably, the air supply system comprises an air pipe connected with the gun nozzle seat, a gate valve is arranged in the middle of the air pipe, the rear end of the gate valve is respectively connected with a compressed air pipe and a fuel air pipe, and the compressed air pipe and the fuel air pipe are respectively provided with the gate valve in a matching way.

Preferably, the top end of the main rod can be in threaded connection with the damping universal hinged support.

Preferably, the outer wall of the protective shell around the second screwing handle is provided with scales.

Preferably, the outer circumference of the rear end of the rotary walking loop bar is fixedly provided with a ring baffle table, and the ring baffle table is arranged at the rear side of the support frame and used for limiting the rotary walking loop bar to continuously move forwards.

The utility model has the beneficial effects that: through the cooperation setting of mobile jib, quick sucking disc and damping universal hinged support, can be quick fix this preheating device in place, and with preheat the rifle mouth and adjust to required angle, later need not hold in whole preheating process, reduced workman's intensity of labour, the welding seam that the operating personnel can preheat good when preheating is direct to weld, save time, whole work efficiency has been promoted, and the setting of a plurality of preheating rifle mouths makes the scope that once work piece preheats bigger, more even, the preheating effect is better, the setting of protective housing can avoid the workman to touch the preheating rifle mouth of high temperature by mistake in the whole in-process of preheating work, provide the guarantee for production safety;

when facing some work pieces with unsmooth surfaces or more sundries, the magnetic blocks can be arranged in the quick sucking discs, the magnetic blocks have strong magnetic force, and when being placed on a metal work piece, the magnetic blocks and the work piece are mutually attracted, so that the quick sucking discs are fixed on the work piece, the stability of the preheating device is ensured, stable support is further provided for the device, and the applicability of multiple scenes of the device is improved;

the damping universal hinge support is matched with the handle, the main rod can be separated when needed, the operation can be directly carried out by one hand, and particularly, the device is used for holding the preheating device and adjusting the angle of the gun nozzle seat to heat the workpiece in places which are limited in facing some operation spaces or are difficult to heat, such as corners of the workpiece, so that the convenience of the preheating device is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of a front cut-away structure of a protective shell according to the present utility model;

fig. 3 is a schematic view of the front cut-away structure of the instant suction cup.

In the figure: 1. a main rod; 2. a quick sucking disc; 21. a magnetic block; 3. damping universal hinged support; 4. a protective shell; 41. a scale; 42. a handle; 5. a rotary driving rod; 51. a first twist grip; 6. rotating the running sleeve rod; 61. walking teeth; 62. a ring baffle; 7. a support frame; 8. a gun nozzle seat; 81. preheating a gun nozzle; 82. an air pipe; 83. a gate valve; 84. a compressed air tube; 85. a fuel gas pipe; 9. a rotating mechanism; 91. a fixed shaft; 92. a drive gear; 93. a worm wheel; 94. a worm; 95. and a second screwing handle.

Description of the embodiments

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The following describes in detail the technical solutions provided by the embodiments of the present utility model with reference to the accompanying drawings.

Example 1: referring to fig. 1 and 2, a preheating device for a medium plate before welding; the damping universal hinge support comprises a main rod 1 and an air supply system, wherein the main rod 1 is made of materials capable of being repeatedly bent and shaped, a quick sucking disc 2 is fixedly arranged at the bottom end of the main rod 1, the quick sucking disc 2 has a certain weight, the bottom end is open, the damping universal hinge support is made of elastic materials, can be adsorbed and fixed on the surface of a workpiece by using atmospheric pressure, and can also be directly placed on a flat operation table, a damping universal hinge support 3 is fixedly arranged at the top end of the main rod 1, a protective shell 4 with an open front end is fixedly arranged at the top end of the damping universal hinge support 3, and the damping universal hinge support 3 can ensure that the protective shell 4 can be stopped at any adjustment angle in an adjustable range;

the gun nozzle seat 8 is arranged in the protective shell 4 in a matching way, and the gun nozzle seat 8 can slide along the inner wall of the protective shell 4 and extend out of the protective shell 4; the front end of the gun nozzle seat 8 is provided with a plurality of preheating gun nozzles 81 connected with an air supply system, the air supply system comprises an air pipe 82 connected with the gun nozzle seat 8, a gate valve 83 is arranged in the middle of the air pipe 82, the rear end of the gate valve 83 is respectively connected with a compressed air pipe 84 and a fuel air pipe 85, and the compressed air pipe 84 and the fuel air pipe 85 are respectively provided with the gate valve 83 in a matching way; the telescopic adjusting mechanism is arranged in the protective shell 4 at the rear side of the gun nozzle seat 8, after the preheating work of the device is completed, the gun nozzle seat 8 and the preheating gun nozzle 81 can be recovered into the protective shell 4 by the telescopic adjusting mechanism, so that the scalding operation is prevented, and the operators are protected;

the telescopic adjusting mechanism comprises a rotary driving rod 5 rotatably arranged on the rear side wall of the protective shell 4, the rear end of the rotary driving rod 5 extends out of the protective shell 4 and is fixedly provided with a first screwing handle 51, the front end of the rotary driving rod 5 is vertically arranged towards the gun nozzle seat 8, a rotary walking sleeve rod 6 is sleeved with threads, the outer ring surface of the rotary walking sleeve rod 6 is circumferentially provided with walking teeth 61, the length of the walking teeth 61 is the same as that of the rotary walking sleeve rod 6, and the running teeth 61 ensure that the axial movement of the rotary walking sleeve rod 6 is ensured while the adjustment of a turnover angle is not influenced due to the arrangement of the through length of the outer surface of the rotary walking sleeve rod 6, and the front end of the rotary walking sleeve rod 6 is vertically connected with the gun nozzle seat 8; a support frame 7 is sleeved on the rotary walking sleeve rod 6 at the rear side of the gun nozzle seat 8 in a matching way, the support frame 7 is fixedly connected with the inner wall of the protective shell 4, and the rotary walking sleeve rod 6 can rotate and axially slide in the support frame 7;

the front side or the rear side of the support frame 7 is internally matched with a driving gear 92 meshed with the walking teeth 61 of the rotary walking loop bar 6, the driving gear 92 is rotatably arranged in the protective shell 4 and is in transmission connection with a rotating mechanism 9, the rotating mechanism 9 can drive the driving gear 92 and lock the driving gear 92, the control end of the rotating mechanism 9 extends out of the protective shell 4, a fixed shaft 91 parallel to the rotary walking loop bar 6 is arranged in the protective shell 4 at the front side of the support frame 7, the front end and the rear end of the fixed shaft 91 are connected with the inner wall of the protective shell 4, the driving gear 92 is rotatably sleeved on the fixed shaft 91 and meshed with the walking teeth 61 of the rotary walking loop bar 6, the rotating mechanism 9 comprises a worm gear 93 rotatably sleeved on the fixed shaft 91 at one side of the driving gear 92, the worm gear 93 is fixedly connected with the driving gear 92, the worm gear 93 is in transmission connection with a worm 94, the worm 94 is rotatably arranged in the protective shell 4, the second screwing handle 95 is fixedly arranged at one end of the worm 94 outwards, scales 41 are drawn on the outer wall of the protective shell 4 around the second screwing handle 95, the scales 41 can provide reference for the angle adjustment of the preheating gun nozzle 81, the adjustment angle is more accurate, the driving gear 92 is rotationally sleeved on the fixed shaft 91 in various manners, for example, the driving gear 92 is rotationally sleeved on the driving shaft through a bearing, further, a clamping spring is arranged on the driving shaft at the front side and the rear side of the driving gear 92 and used for further restraining the axial position of the driving gear 92 to prevent the driving gear 92 from sliding along the driving shaft, the second screwing handle 95 is rotated, the second screwing handle 95 drives the worm 94 to rotate, the worm 94 drives the worm wheel 93, the worm wheel 93 drives the driving gear 92 to rotate through the fixed shaft 91, at the moment, the driving gear 92 drives the walking tooth 61 to overturn the rotary walking sleeve rod 6 to a certain angle, the rotating running sleeve rod 6 drives the preheating nozzle 81 and the nozzle seat 8 to turn over, and the preheating nozzle 81 and the nozzle seat 8 can be adjusted from a parallel state to a vertical state;

the outer circumference of the rear end of the rotary traveling sleeve rod 6 is fixedly provided with a ring baffle table 62, the ring baffle table 62 is arranged at the rear side of the supporting frame 7 and used for limiting the rotary traveling sleeve rod 6 to continuously move forwards, when the rotary traveling sleeve rod 6 extends forwards for a certain distance, the ring baffle table 62 is contacted with the supporting frame 7, the supporting frame 7 prevents the ring baffle table 62 from continuously moving, the rotary traveling sleeve rod 6 stops moving along with the continuous movement, the rotary traveling sleeve rod 6 is prevented from slipping out of the rotary driving rod 5, and anti-skid rubber is arranged on the outer surfaces of the first screwing handle 51 and the second screwing handle 95, so that screwing hand feeling is improved;

when in use, the quick sucking disc 2 is used for fixing the preheating device on a platform or a workpiece, the main rod 1 and the protective shell 4 are adjusted, the first screwing handle 51 is screwed to extend the preheating gun nozzle 81 out of the protective shell 4, the preheating gun nozzle 81 is aligned with a welding line, the distance is adjusted, the welding part corresponds to the position of the preheating gun nozzle 81, the second screwing handle 95 is screwed to rotate the preheating gun nozzle 81 to a required angle, the gate valve 83 on the fuel gas pipe 85 is firstly slowly opened, then the gate valve 83 on the compressed air pipe 84 and the gate valve 83 on the air pipe 82 are slightly opened, the preheating gun nozzle 81 is subjected to open flame ignition, the opening of the gate valve 83 on the fuel gas pipe 85 and the compressed air pipe 84 is enlarged and adjusted, the flame is in an optimal state, after the preheating is finished, the first screwing handle 51 is screwed to recycle the preheating gun nozzle 81 into the protective shell 4, the main rod 1, the quick sucking disc 2 and the damping universal hinged support 3 are matched, the preheating device can be quickly fixed in place, the preheating gun nozzle 81 is adjusted to a required angle, then the whole preheating process is not needed to be held by hands, the labor intensity of workers is reduced, the preheated welding seam can be directly welded by operators while the preheating process is performed, the time is saved, the whole working efficiency is improved, the preheating gun nozzles 81 are arranged to enable the preheating range of one workpiece to be larger and more uniform, the preheating effect is better, the preheating gun nozzle 81 which is mistakenly touched by the workers to be high temperature in the whole preheating process can be avoided by the arrangement of the protective shell 4, and the guarantee is provided for production safety.

Example 2: referring to fig. 3, on the basis of embodiment 1, the magnetic block 21 is embedded in the quick suction cup 2, when facing some workpieces with unsmooth surfaces or more sundries, the magnetic block 21 can be installed in the quick suction cup 2, the magnetic block 21 has stronger magnetic force, and when being placed on a metal workpiece, the magnetic block 21 and the workpiece are mutually attracted, so that the quick suction cup 2 is fixed on the workpiece, the stability of the preheating device is ensured, stable support is further provided for the device, and the multi-scene applicability of the device is improved.

Example 3: referring to fig. 1, on the basis of embodiment 1, a handle 42 is fixedly mounted at the rear end of the bottom surface of the protective shell 4, the handle 42 is designed according to ergonomics, the surface of the handle 42 is coated with soft materials, so as to ensure the holding comfort, reduce the fatigue of workers, the top end of the main rod 1 can be in threaded connection with the damping universal hinged support 3, the damping universal hinged support 3 and the handle 42 are matched, the main rod 1 can be separated from the main rod 1 when needed, the operation can be directly carried out by one hand, especially in places with limited facing some operation spaces or where heating is difficult, such as corners of a workpiece, the preheating device is held by hand, the workpiece is heated by adjusting the angle of the gun nozzle seat 8, and the convenience of the preheating device is improved.

The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.

Claims (9)

1. The utility model provides a preheating device before medium plate welding, includes mobile jib (1) and air feed system, its characterized in that, the bottom fixed mounting of mobile jib (1) has quick sucking disc (2), the top fixed mounting of mobile jib (1) has universal hinge support of damping (3), the top fixed mounting of universal hinge support of damping (3) has a front end open protective housing (4), installs rifle mouth seat (8) in the protective housing (4) matching, and rifle mouth seat (8) can slide along protective housing (4) inner wall to stretch out protective housing (4); the front end of the gun nozzle seat (8) is provided with a plurality of preheating gun nozzles (81) connected with an air supply system; a telescopic adjusting mechanism is arranged in a protective shell (4) at the rear side of the gun nozzle seat (8), the telescopic adjusting mechanism comprises a rotary driving rod (5) rotatably installed on the rear side wall of the protective shell (4), the rear end of the rotary driving rod (5) extends out of the protective shell (4) and is fixedly provided with a first screwing handle (51), the front end of the rotary driving rod (5) is vertically arranged towards the gun nozzle seat (8) and is sheathed with a rotary walking sleeve rod (6), the outer ring surface of the rotary walking sleeve rod (6) is provided with walking teeth (61) along the circumference, and the front end of the rotary walking sleeve rod (6) is vertically connected with the gun nozzle seat (8); a support frame (7) is sleeved on the rotary walking sleeve rod (6) at the rear side of the gun nozzle seat (8), the support frame (7) is fixedly connected with the inner wall of the protective shell (4), and the rotary walking sleeve rod (6) can rotate and axially slide in the support frame (7); the protection shell (4) at the front side or the rear side of the support frame (7) is internally matched with a driving gear (92) meshed with the walking teeth (61) of the rotary walking sleeve rod (6), the driving gear (92) is rotatably installed in the protection shell (4) and is connected with a rotating mechanism (9) in a transmission manner, the rotating mechanism (9) can drive the driving gear (92) and lock the driving gear, and the control end of the rotating mechanism (9) extends out of the protection shell (4).

2. The preheating device before welding of the medium plate according to claim 1, wherein the magnet (21) is movably embedded in the quick sucking disc (2).

3. The preheating device before welding of the medium plate according to claim 1, wherein a handle (42) is fixedly arranged at the rear end of the bottom surface of the protective shell (4).

4. The preheating device before welding of the medium plate according to claim 1, characterized in that a fixed shaft (91) parallel to the rotary traveling sleeve rod (6) is arranged in a protective shell (4) at the front side of the support frame, the front end and the rear end of the fixed shaft (91) are connected with the inner wall of the protective shell (4), the driving gear (92) is rotationally sleeved on the fixed shaft (91) and meshed with the traveling teeth (61) of the rotary traveling sleeve rod (6), the rotating mechanism (9) comprises a worm wheel (93) rotationally sleeved on the fixed shaft at one side of the driving gear (92), the worm wheel (93) is fixedly connected with the driving gear (92), the worm wheel (93) is in meshed connection with a worm (94), the worm (94) is rotationally installed in the protective shell (4), and one end of the worm (94) is externally and fixedly installed with a second screwing handle (95).

5. The preheating device before welding of medium plates according to claim 1, wherein the length of the travelling tooth (61) is the same as the length of the rotary travelling loop bar (6).

6. The preheating device before welding of a medium plate according to claim 1, wherein the air supply system comprises an air pipe (82) connected with a gun nozzle seat (8), a gate valve (83) is arranged in the middle of the air pipe (82), the rear end of the gate valve (83) is respectively connected with a compressed air pipe (84) and a fuel air pipe (85), and the compressed air pipe (84) and the fuel air pipe (85) are provided with the gate valve (83) in a matching mode.

7. The preheating device before welding of the medium plate according to claim 1, wherein the top end of the main rod (1) can be in threaded connection with the damping universal hinged support (3).

8. The preheating device before welding of medium plates according to claim 4, wherein the outer wall of the protective housing (4) around the second screwing handle (95) is provided with scales (41).

9. The preheating device before welding of the medium plate according to claim 1, wherein a ring baffle table (62) is fixedly arranged on the outer circumference of the rear end of the rotary traveling loop bar (6), and the ring baffle table (62) is arranged at the rear side of the supporting frame (7) and used for limiting the rotary traveling loop bar (6) to continuously move forwards.