Welding fume suction hood rotating arm assembly for steel structure welding equipment

Abstract

The invention belongs to the technical field of welding equipment, and particularly relates to a welding fume suction hood rotating arm assembly for steel structure welding equipment, which structurally comprises a flexible branch pipe, a rotating plate and a telescopic plate, and further comprises a bent mounting frame unit with an upward opening and used for mounting the rotating plate, the telescopic plate is arranged on the bending type mounting frame unit, the balancing weight unit is arranged in the bending type mounting frame unit and used for tensioning the flexible branch pipe, the vertical rotating plate unit is arranged on the telescopic plate in a hinged mode and used for mounting a dust suction hood, and the protruding rod is arranged on the telescopic plate and used for winding the flexible branch pipe. Compared with the prior art, the dust collection device at least has the beneficial effects that the dust collection cover can achieve the height adjusting function through the vertical rotating plate unit installed in a hinged mode, and the situation that the dust collection cover is excessively vertically away from a steel structure weldment and collides with the steel structure weldment is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, and in particular relates to a welding fume suction hood rotating arm assembly for steel structure welding equipment. Background Art

[0002] Various common welding equipment, such as electric welders, flame welders, etc., generally produce a large amount of harmful smoke when welding steel structures. Therefore, the above-mentioned welders are generally used together with welding smoke hoods to discharge the harmful smoke in an orderly and as complete a manner as possible to meet the standards.

[0003] The structure of the welding fume hood mainly includes: a hood body, a pipeline, a frame, and an exhaust fan. Generally, the pipeline can be further divided into a main pipe and a branch pipe, the latter of which is multiple and corresponds to the same number of hood bodies, so that one exhaust fan can perform fume extraction operations on multiple welding machines as needed.

[0004] Furthermore, the structure of the frame generally includes a fixed frame and a movable frame, and the structure of the rotating arm assembly mainly refers to the movable frame, which ultimately enables the cover to be sufficiently and appropriately close to the welding machine, ensuring that the smoke suction operation has the advantages of direct and efficient.

[0005] For example, the Chinese utility model patent with authorization announcement number CN221063876U and authorization announcement date 2024.06.04 discloses a welding smoke dust removal system for steel structure welding, whose structural components mainly include: a smoke purifier, an air suction channel, a centrifugal fan, an air suction main pipe, an air suction branch pipe, a support mechanism, a rotating arm, and a telescopic arm.

[0006] The welding smoke dust removal system in this utility model patent has the following main advantages: high working efficiency, low energy consumption, smooth use and low failure rate.

[0007] However, in actual use, the system still has at least relatively poor practicality and safety issues. Specifically, the height of the suction hood is difficult to adjust, and after the support mechanism is retracted, the suction branch pipe made of a flexible tube will fall down, thereby tripping and pulling the steel structure, ultimately causing great economic losses and serious safety accidents. Summary of the invention

[0008] The invention provides a welding smoke suction hood rotating arm assembly for steel structure welding equipment, and aims to solve the technical problem of how to make the welding smoke suction operation have both comprehensiveness of use and safety during operation.

[0009] The technical solution adopted by the present invention to solve the above-mentioned problem is: a welding smoke dust hood rotating arm assembly for steel structure welding equipment, the structure includes a flexible branch pipe, a rotating plate, and a telescopic plate, and also includes a bending type mounting frame unit with an opening upward and used to install the rotating plate, a counterweight block unit arranged in the bending type mounting frame unit and used to tension the flexible branch pipe, a vertical rotating plate unit hingedly arranged on the telescopic plate and used to install the dust hood, and a protruding rod arranged on the telescopic plate and used to wind up the flexible branch pipe.

[0010] A further preferred technical solution is that the bending type mounting frame unit includes a vertical mounting plate, and an inclined plate which is arranged at the lower end of the vertical mounting plate, is hinged to the rotating plate, and is used to lower the height of the dust hood.

[0011] A further preferred technical solution is that the bending type mounting frame unit further includes an open circular ring provided on the side of the vertical mounting plate and used for mounting the main pipe, and a pipe hole provided on the open circular ring and used for extending the flexible branch pipe downward.

[0012] A further preferred technical solution is that the counterweight unit includes a transverse cylinder arranged on the flexible branch pipe, and triangular counterweights respectively arranged at both ends of the transverse cylinder and used to engage the vertical mounting plate and the inclined plate.

[0013] A further preferred technical solution is that the vertical rotating plate unit includes a plate body for mounting the dust hood, a hinge shaft arranged on the plate body and used to connect the telescopic plate, and a torsion spring sleeved on the hinge shaft and connecting the telescopic plate.

[0014] A further preferred technical solution is that: the number of the protruding rods is 2, which are respectively arranged at two sides of the plate body.

[0015] A further preferred technical solution is that the vertical rotating plate unit also includes a transverse groove arranged on the hinged side end surface of the plate body, and is used to fix the pitch angle of the plate body by snapping into the flexible branch pipe so that the flexible branch pipe is blocked on the upper and lower surfaces of the telescopic plate.

[0016] A further preferred technical solution is that the counterweight unit further includes an opening provided on the transverse cylinder and used for passing the flexible branch pipe.

[0017] A further preferred technical solution is that the vertical rotating plate unit further includes a driving wheel arranged on the hinge shaft.

[0018] A further preferred technical solution is that the vertically rotating plate unit further includes a cover mounting hole which is arranged on the plate body and is used for passing the flexible branch pipe.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects: First, the dust hood can achieve a height adjustment function through a hinged vertical rotating plate unit to prevent the dust hood from being excessively vertically away from the steel structure weldment and bumping against the steel structure weldment; Second, the dust hood is indirectly installed on the bending type mounting frame unit, so it has an initial height lowering function, so that even if the bending type mounting frame unit is installed on the beam of the factory building, the dust hood can be fully and appropriately close to the steel structure weldment, achieving a more comprehensive and efficient dust collection effect; Third, a counterweight unit is provided on the flexible branch pipe to ensure that the former is not easy to fall and does not affect the original telescopic function, thus avoiding accidents such as steel structure weldments pulling the flexible branch pipe; Fourth, the protruding rod can also provide a further length adjustment function for the flexible branch pipe, so that the flexible branch pipe is not easy to fall even when the telescopic plate is in the state of maximum retraction; Fifth, the flexible branch pipe can provide a snap-fitting and fixing function for the pitch angle of the vertical rotating plate unit, thereby preventing the vertical rotating plate unit from rotating spontaneously and ensuring that the dust hood is always fixed at a desired height. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 This is a schematic diagram of the first installation method of the present invention.

[0022] Figure 3 This is a schematic diagram of the second installation method of the present invention.

[0023] Figure 4 It is a schematic structural diagram of the bending type mounting frame unit in the present invention.

[0024] Figure 5 It is a schematic diagram of the position and shape of the engaging groove in the present invention.

[0025] Figure 6 It is a schematic diagram of the position and shape of the sliding block in the present invention.

[0026] Figure 7 It is a schematic diagram of the position of the hinged installation opening in the present invention.

[0027] Figure 8 It is a schematic diagram of the structure of the vertical rotating plate unit in the present invention from a top view.

[0028] Fig. 9It is a schematic diagram of the use of the protruding rod in the present invention.

[0029] Fig.10 It is a schematic diagram of the use of the transverse grooves in the present invention.

[0030] Fig.11 It is a structural schematic diagram of the counterweight unit in the present invention.

[0031] In the figure, the meanings of the symbols are as follows: Dust hood a, main pipe b, steel structure welded parts c, fixed frame d, plant beam e; Flexible branch pipe 11, rotating plate 12, telescopic plate 13; A bending type mounting frame unit 1, a counterweight unit 2, a vertical rotating plate unit 3, a protruding rod 4, a snap-fit ​​groove 5, a sliding block 6, a hinged mounting opening 7, a fixed pulley 8, and an anti-drop lever 9; Vertical mounting plate 101, inclined plate 102, open ring 103, pipe hole 104, hinged seat 105; Transverse cylinder 201, triangular counterweight 202, opening 203; Plate body 301 , hinge shaft 302 , torsion spring 303 , transverse slot 304 , driving wheel 305 , cover body mounting hole 306 . DETAILED DESCRIPTION

[0032] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention.

[0033] like Figure 1-Figure 11 As shown, a welding fume hood rotating arm assembly for steel structure welding equipment includes a flexible branch pipe 11, a rotating plate 12, and a telescopic plate 13, and also includes a bending type mounting frame unit 1 which opens upward and is used to install the rotating plate 12, a counterweight block unit 2 which is arranged in the bending type mounting frame unit 1 and is used to tension the flexible branch pipe 11, a vertical rotating plate unit 3 which is hingedly arranged on the telescopic plate 13 and is used to install a dust hood a, and a protruding rod 4 which is arranged on the telescopic plate 13 and is used to wind up the flexible branch pipe 11.

[0034] In this embodiment, the bending type mounting frame unit 1 is screwed to the fixed frame d or the factory beam e, and the rotating plate 12 is hinged to the bending type mounting frame unit 1, thereby providing the dust hood a with the first lateral adjustment dimension, that is, swinging left and right compared to the steel structure welded part c.

[0035] The telescopic plate 13 is plugged into the rotating plate 12, thereby providing the dust hood a with a second lateral adjustment dimension, that is, closer to and farther away from the steel structure welded part c. Finally, the vertical rotating plate unit 3 is hinged with the telescopic plate 13, thereby providing the dust hood a with a vertical adjustment dimension. At this point, the dust hood a has a comprehensive position adjustment effect compared to the steel structure welded part c. Within a certain range, no matter where the welding position is, the dust hood a can be fully and appropriately located above the welding position, ensuring a direct and efficient welding smoke suction effect.

[0036] When the telescopic plate 13 is greatly extended and the bending type mounting frame unit 1 is greatly rotated downward, the effective length of the flexible branch pipe 11 is stretched as needed. At this time, the flexible branch pipe 11 is tightened and there is no need to consider the safety problem of the pipe body falling.

[0037] When the telescopic plate 13 is relatively retracted and the vertical rotating plate unit 3 is greatly rotated upward, the flexible branch pipe 11 has a tendency to fall down, and the rotating arm assembly needs to perform a flexible pipe anti-falling operation, and the specific method is as follows: First, the counterweight unit 2 falls down to a lower position in the bending type mounting frame unit 1 by its own weight, and the longer flexible branch pipe 11 is retracted into the bending type mounting frame unit 1 to avoid the harmful phenomenon of large-scale drooping; Second, even if the counterweight drives the flexible tube to retract, the latter may still droop. At this time, the operator can manually wind the flexible branch tube 11 on the protruding rod 4, thereby ultimately avoiding the drooping phenomenon that poses a major safety hazard.

[0038] Accordingly, the manually wound portion of the flexible branch pipe 11 on the protruding rod 4 needs to be unfolded before the subsequent dust hood a extends outward and rotates downward to ensure that the length of the flexible branch pipe 11 is sufficient.

[0039] The bending type mounting frame unit 1 includes a vertical mounting plate 101 and an inclined plate 102 which is arranged at the lower end of the vertical mounting plate 101, is hinged to the rotating plate 12, and is used to lower the height of the dust hood a.

[0040] In the prior art, the rotating arm of the welding smoke suction system is installed at a relatively high position, and the dust hood is lowered in height by hanging the dust suction pipe, which causes the dust hood to swing easily, reduces the dust suction efficiency, and also brings safety hazards.

[0041] In this embodiment, the vertical mounting plate 101 and the inclined plate 102 form a generally "V-shaped" structure, and the angle between the two is 5-15°, so as to provide a basic positioning effect for the dust hood a, so that the dust hood a is closer in height to various commonly used steel structure welded parts c.

[0042] On the other hand, the above-mentioned "V-shaped" structure acts as a safe storage groove for the flexible branch pipe 11, so that during the use of the rotating arm assembly, the part of the flexible pipe that would originally fall near the steel structure welded part c can fall and accumulate in the "V-shaped" structure, greatly reducing the probability of the steel structure welded part c hooking and pulling the flexible branch pipe 11.

[0043] The bending type mounting frame unit 1 further comprises an open circular ring 103 disposed on the side of the vertical mounting plate 101 and used for mounting the main pipe b, and a pipe hole 104 disposed on the open circular ring 103 and used for extending the flexible branch pipe 11 downward.

[0044] In this embodiment, the welding smoke suction system includes a main pipe b and a plurality of flexible branch pipes 11, and the position of the rotating arm assembly in the upward direction of the main pipe b is determined by the position of the welding machine.

[0045] The open circular ring 103 supports and engages with the main pipe b, and the central angle of the former is greater than 180°. A fixed pulley 8 is provided at the upper end of the inclined plate 102 to prevent the flexible branch pipe 11 from being worn significantly on the inclined plate 102. Correspondingly, a fixed pulley 8 is also provided on the rotating plate 12.

[0046] The counterweight unit 2 includes a transverse cylinder 201 disposed on the flexible branch pipe 11 , and triangular counterweights 202 disposed at both ends of the transverse cylinder 201 and used to engage with the vertical mounting plate 101 and the inclined plate 102 .

[0047] In this embodiment, the length of the flexible branch pipe 11 can be set to be relatively short, that is, when the telescopic plate 13 is fully retracted and the vertical rotating plate unit 3 is rotated upward to the maximum extent, the counterweight unit 2 is located at a lower position in the bending type mounting frame unit 1, but still does not bottom out in the bending type mounting frame unit 1.

[0048] The advantage of this method is that it can completely solve and avoid the problem of harmful sagging of the flexible branch pipe 11. The disadvantage is that the size of the bending type mounting frame unit 1 needs to be relatively large, that is, the depth of the above-mentioned "V-shaped" structure needs to be relatively large.

[0049] The length of the flexible branch pipe 11 can also be set to be relatively large, that is, the counterweight unit 2 will bottom out in the bending type mounting frame unit 1 during normal use, and the effect of tensioning the flexible branch pipe 11 is not always effective.

[0050] The advantage of this method is that the flexible branch pipe 11 can be wound around the protruding rod 4 to reserve a section of the pipe body, providing a necessary basis for the subsequent expansion function. Accordingly, even if the counterweight unit 2 has bottomed out in the bending type mounting frame unit 1 and the flexible branch pipe 11 can no longer be tensioned, the flexible branch pipe 11 can be accumulated and stored in the bending type mounting frame unit 1, which also makes it difficult for the harmful pipe body to droop.

[0051] Among them, the flexible branch pipe 11 passes through the bottom of the horizontal cylinder 201, and the vertical cross-sectional shape of the triangular counterweight block 202 corresponds to the above-mentioned "V-shaped" structure, ensuring that the state of the counterweight block unit 2 itself suspended by the flexible branch pipe 11 is relatively stable, at least the counterweight block unit 2 will not accidentally fall to the ground.

[0052] Of course, the length of the flexible branch pipe 11 cannot be too short, and it is necessary to ensure that when it is in the maximum extended state, the counterweight unit 2 is still not easy to fall off it.

[0053] The vertical rotating plate unit 3 includes a plate body 301 for mounting the dust hood a, a hinge shaft 302 disposed on the plate body 301 and used to connect the telescopic plate 13, and a torsion spring 303 sleeved on the hinge shaft 302 and connected to the telescopic plate 13.

[0054] In this embodiment, the telescopic plate 13 is provided with a hinged installation opening 7, and openings for inserting the hinge shaft 302 are provided on both sides of the opening, and the number of the torsion springs 303 is two, which are respectively located in the two openings. At this point, the plate body 301 has been fully hinged with the telescopic plate 13, and relies on the torsion force of the torsion springs 303 to maintain the initial state of being flush with the telescopic plate 13.

[0055] The dust hood a can be lowered by applying force downward on the plate body 301, and the dust hood a can be raised by applying force upward on the plate body 301, so as to be closer to the dust hood a and the welding position, thereby ensuring the high efficiency of the dust collection operation.

[0056] On the other hand, an "inverted T-shaped" groove, namely the locking groove 5, is provided on the lower surface of the rotating plate 12, and the sliding block 6 which is also "inverted T-shaped" and matches it is provided on the upper surface of the telescopic plate 13 to ensure that the telescopic plate 13 can be extended and retracted as needed.

[0057] Furthermore, the sliding block 6 is provided with screw holes and limiting holes, so that the sliding mode of the telescopic plate 13 has a structural basis for upgrading to electric.

[0058] There are two protruding rods 4 , which are respectively arranged at two sides of the plate body 301 .

[0059] In this embodiment, the two protruding rods 4 are also arranged on both sides of the hinged installation opening 7, and the flexible branch tube 11 is simply bypassed thereon, or the flexible branch tube 11 is wound around it for multiple turns.

[0060] The main function of the protruding rod 4 is to prevent the flexible branch pipe 11 from having a drooping pipe section together with the counterweight unit 2, either manually or automatically.

[0061] The vertical rotating plate unit 3 also includes a transverse slot 304 arranged on the hinged side end surface of the plate body 301, and is used to fix the pitch angle of the plate body 301 by snapping into the flexible branch pipe 11 so that the flexible branch pipe 11 blocks the upper and lower surfaces of the telescopic plate 13.

[0062] In this embodiment, the flexible tube portion between the two protruding rods 4 and wound on the protruding rods 4 also has the following function: after the plate body 301 rotates as needed to obtain a suitable pitch angle, due to the torsion force of the torsion spring 303, the plate body 301 has a tendency to rotate back to be flush with the telescopic plate 13, and this tendency can be blocked and offset by the flexible branch pipe 11, as shown in the following specific method.

[0063] As attached Fig.10 As shown, after the plate body 301 is tilted, part of the transverse groove 304 will be lower than or higher than the telescopic plate 13. At this time, the above-mentioned flexible tube part can be selectively inserted into the transverse groove 304, and the flexible tube itself is against the upper surface or the lower surface of the telescopic plate 13, so that the plate body 301 will not rotate and reset, ultimately ensuring that the dust hood a obtains the required vertical height.

[0064] The word "flexible" in the flexible branch pipe 11 means that it can only be bent to obtain an arc with a relatively large radius of curvature, is generally difficult to bend excessively, and is not easily flattened in the radial direction of the pipe body, so it can be stuck to the plate body 301. Specifically, the flexible branch pipe 11 can be a PVC steel wire pipe.

[0065] The number of the transverse slots 304 is 3-5, that is, the plate body 301 can be held by hand to obtain a pitch state of any angle, but if the flexible branch pipe 11 is needed to clamp and then release the holding hand, the pitch angle adjustment method of the plate body 301 can only be stepped, and the number of steps is the number of the transverse slots 304.

[0066] The counterweight unit 2 further includes an opening 203 disposed on the transverse cylinder 201 and used for passing the flexible branch pipe 11 .

[0067] In this embodiment, the flexible branch pipe 11 can either pass through the bottom of the transverse cylinder 201 or be directly inserted into the opening 203, ensuring that: First, when the tube body portion of the flexible branch pipe 11 located in the bending type mounting frame unit 1 is pulled upward greatly, the counterweight unit 2 is never separated from it; Second, if the flexible branch pipe 11 is loosened, dropped, or stacked in the bending type mounting frame unit 1, it is always located between the two triangular counterweight blocks 202 and is not completely separated from the counterweight block unit 2. If the flexible branch pipe 11 is stretched again, it will still pull up the counterweight block unit 2.

[0068] The vertical rotating plate unit 3 further includes a driving wheel 305 disposed on the hinge shaft 302 .

[0069] In this embodiment, the driving wheel 305 serves to provide a structural basis for the extended function of the vertical rotating plate unit 3: electric drive, similar to the screw holes and limiting holes on the sliding block 6 .

[0070] Among them, the driving wheel 305 is located outside the hinged installation opening 7. Even if the vertical rotating plate unit 3 is upgraded to an electric drive mode, the clamping and fixing effect of the transverse groove 304 and a section of flexible branch pipe 11 is still effective and can be used together.

[0071] The vertical rotating plate unit 3 further includes a cover mounting hole 306 disposed on the plate body 301 and used for passing the flexible branch pipe 11 .

[0072] In this embodiment, the upper end of the dust hood a is plugged and fixed on the hood mounting hole 306, or the two are not plugged and the dust hood a is directly suspended. The advantage of the second method is that the flexible branch pipe 11 near the opening 203 can also provide a vertical height adjustable effect for the dust hood a by self-pulling, but the disadvantage is that the dust hood a has a problem of a small swing of itself.

[0073] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present invention. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A welding smoke hood rotating arm assembly for steel structure welding equipment, comprising a flexible branch pipe (11), a rotating plate (12), and a telescopic plate (13), characterized in that: It also comprises a bending type mounting frame unit (1) which opens upward and is used to mount the rotating plate (12), a counterweight unit (2) which is arranged in the bending type mounting frame unit (1) and is used to tension the flexible branch pipe (11), a vertical rotating plate unit (3) which is hingedly arranged on the telescopic plate (13) and is used to mount the dust hood (a), and a protruding rod (4) which is arranged on the telescopic plate (13) and is used to wind up the flexible branch pipe (11).

2. The welding fume hood rotating arm assembly for steel structure welding equipment according to claim 1, characterized in that: The foldable mounting frame unit (1) comprises a vertical mounting plate (101), and an inclined plate (102) which is arranged at the lower end of the vertical mounting plate (101), is hingedly connected to the rotating plate (12), and is used to lower the height of the dust hood (a).

3. The welding fume hood rotating arm assembly for steel structure welding equipment according to claim 2, characterized in that: The bent mounting frame unit (1) further comprises an open circular ring (103) arranged on the side of the vertical mounting plate (101) and used for mounting the main pipe (b), and a pipe hole (104) arranged on the open circular ring (103) and used for extending the flexible branch pipe (11) downward.

4. The welding fume hood rotating arm assembly for steel structure welding equipment according to claim 2, characterized in that: The counterweight unit (2) comprises a transverse cylinder (201) arranged on the flexible branch pipe (11), and triangular counterweights (202) respectively arranged at both ends of the transverse cylinder (201) and used to engage with the vertical mounting plate (101) and the inclined plate (102).

5. The welding fume hood rotating arm assembly for steel structure welding equipment according to claim 1, characterized in that: The vertical rotating plate unit (3) comprises a plate body (301) for mounting the dust hood (a), a hinge shaft (302) arranged on the plate body (301) and used to connect the telescopic plate (13), and a torsion spring (303) sleeved on the hinge shaft (302) and connected to the telescopic plate (13).

6. The welding fume hood rotating arm assembly for steel structure welding equipment according to claim 5, characterized in that: The number of the protruding rods (4) is two, which are respectively arranged at two sides of the plate body (301).

7. The welding fume hood rotating arm assembly for steel structure welding equipment according to claim 6, characterized in that: The vertical rotating plate unit (3) further comprises a transverse slot (304) arranged on the hinged side end surface of the plate body (301) and used for fixing the pitch angle of the plate body (301) by snapping into the flexible branch pipe (11) so that the flexible branch pipe (11) blocks the upper and lower surfaces of the telescopic plate (13).

8. The welding fume hood rotating arm assembly for steel structure welding equipment according to claim 4, characterized in that: The counterweight unit (2) further comprises an opening (203) arranged on the transverse cylinder (201) and used for passing the flexible branch pipe (11).

9. The welding fume hood rotating arm assembly for steel structure welding equipment according to claim 5, characterized in that: The vertical rotating plate unit (3) further comprises a driving wheel (305) arranged on the hinge shaft (302).

10. The welding fume hood rotating arm assembly for steel structure welding equipment according to claim 5, characterized in that: The vertical rotating plate unit (3) further comprises a cover body mounting hole (306) arranged on the plate body (301) and used for passing the flexible branch pipe (11).

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