Pre-welding preheating device for middle trough
By designing the pre-welding device for the middle groove, the middle groove is clamped by meshing the embossing of the arcuate clamp and the rack and rack, and combining the extrusion plate and guide rail limits, the deformation and position instability caused by thermal stress during the pre-heating of the middle groove is solved, and the stability and accuracy before welding are improved.
Patent Information
- Application Number
- CN202421868411.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-05
AI Technical Summary
When the middle groove is preheated before welding, thermal stress is easily caused by temperature changes, resulting in local deformation or distortion, and the lack of clamping force leads to unstable position, affecting the welding quality.
A preheating device for the middle groove is designed, using an arcuate clamp to clamp the middle groove, and the threaded rod is restricted by meshing with gears and racks. Combining the extrusion plate and guide rail limits, ensuring the stability of the middle groove during the preheating process.
Effectively prevent deformation and distortion caused by thermal stress during the preheating process of the middle groove, improve the stability and position accuracy before welding, and reduce the difficulty of welding.
Smart Images
Figure CN223084050U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of preheating, in particular to a preheating device for a middle trough before welding. Background Technique
[0002] The middle trough is a key component of the scraper conveyor, mainly used for the scraper conveyor and the transfer machine in coal mines. Specifically, the middle trough is the fuselage of the scraper conveyor, usually composed of components such as the middle plate and the trough side steel. Its design feature is that the upper trough is used for transporting materials, while the lower trough is used for the return of the scraper chain.
[0003] Generally, after the middle trough is used for a period of time, it is prone to deformation and wear. At this time, it needs to be welded and repaired. Before welding, in order to reduce the temperature difference between the welding area and the whole welded part and the restraint degree of the welding structure, the middle trough is usually preheated.
[0004] However, when using the preheating device to preheat the middle trough, it is prone to generate certain thermal stress due to temperature changes. Under the influence of the effect of thermal stress and the lack of clamping force of the middle trough, the middle trough is prone to local deformation or distortion; therefore, in view of the above problems, a preheating device for a middle trough before welding is proposed. Content of the Utility Model
[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background technique, the utility model proposes a preheating device for a middle trough before welding.
[0006] The technical solution adopted by the utility model to solve its technical problems is: a preheating device for a middle trough before welding according to the utility model includes a preheating device body; a plurality of gas tanks are connected to the middle of the preheating device body; conveying pipes are connected to the ends of the gas tanks; a blowtorch is connected to the end of the conveying pipe; a plurality of arc-shaped plates are fixedly connected to the top of the preheating device body; a bidirectional threaded rod is connected to the middle of the arc-shaped plate; bow-shaped clamping plates are threadedly connected to both ends of the bidirectional threaded rod; a gear is fixedly connected to the end of the bidirectional threaded rod; a groove plate is fixedly connected to one side of the top of the preheating device body; a rack is slidably connected to the middle of the groove plate.
[0007] Preferably, a plurality of sliding columns are slidably connected to the top of each bow-shaped clamping plate; extrusion plates are fixedly connected to the bottoms of the sliding columns; pulling plates are fixedly connected to the tops of the sliding columns; a plurality of tension springs are connected to the middle of the pulling plates; a handle is fixedly connected to the top of the pulling plate.
[0008] Preferably, a plurality of guide rails are fixedly connected to the top of the preheating device body; a plurality of guide posts are fixedly connected to one side of each bow-shaped clamping plate; a U-shaped plate is fixedly connected to the end of the guide post; a rotating shaft is rotatably connected to the middle of the U-shaped plate; a groove roller is fixedly connected to the middle of the rotating shaft.
[0009] Preferably, inclined plates are fixedly connected to both sides of the arcuate splint; limiting blocks are fixedly connected to the bottoms of the inclined plates; convex chute grooves are formed on both sides of the top of the preheating device body.
[0010] Preferably, multiple brush plates are fixedly connected to one side of the arc-shaped plate; multiple brush hairs are connected to the bottoms of the brush plates.
[0011] Preferably, gravity balls are fixedly connected to both ends of the pull plate.
[0012] Preferably, friction pads are connected to the middle parts of the arcuate splints.
[0013] The beneficial effects of the present utility model are as follows:
[0014] 1. For the preheating device for the middle groove before welding of the present utility model, through the clamping action of the arcuate splint on the middle groove, the thermal stress generated due to temperature changes during the preheating of the middle groove can be prevented, thereby avoiding the situation that the middle groove is locally deformed and distorted, and further increasing the difficulty of subsequent welding and trimming work. Through the meshing of the gear and the rack, a certain effect of restricting the bidirectional threaded rod can be achieved, thereby improving the stability of the arcuate splint.
[0015] 2. For the preheating device for the middle groove before welding of the present utility model, through the extrusion of the middle groove by the extrusion plate, the effect of limiting the middle groove can be achieved, thereby further improving the position stability of the middle groove during preheating, reducing the situation that its position is easily offset under external interference, and thus affecting the accuracy of the preheating area. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0017] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model;
[0018] Figure 2 It is a three-dimensional sectional structure schematic diagram of the present utility model;
[0019] Figure 3 It is a sectional structure schematic diagram of the bidirectional threaded rod of the present utility model;
[0020] Figure 4 It is a sectional structure schematic diagram of the convex chute groove of the present utility model.
[0021] In the figure: 1. Preheating device body; 12. Gas tank; 13. Delivery pipeline; 14. Blowtorch; 15. Arc plate; 16. Bidirectional threaded rod; 17. Bow-shaped clamping plate; 18. Gear; 19. Groove plate; 111. Rack; 2. Slide column; 21. Extrusion plate; 22. Pulling plate; 23. Tensile spring; 24. Handle; 3. Guide rail; 31. Guide post; 32. U-shaped plate; 33. Rotating shaft; 34. Grooved roller; 4. Inclined plate; 41. Limit block; 42. Convex chute; 5. Brush plate; 51. Brush bristles; 6. Gravity ball; 7. Friction pad. Detailed implementation mode
[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0023] As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, a preheating device for a middle trough before welding includes a preheating device body 1; a plurality of gas tanks 12 are connected to the middle of the preheating device body 1; the ends of the gas tanks 12 are all connected with delivery pipelines 13; the ends of the delivery pipelines 13 are connected with blowtorches 14; a plurality of arc plates 15 are fixedly connected to the top of the preheating device body 1; a bidirectional threaded rod 16 is connected to the middle of the arc plates 15; both ends of the bidirectional threaded rod 16 are threadedly connected with bow-shaped clamping plates 17; a gear 18 is fixedly connected to the end of the bidirectional threaded rod 16; a groove plate 19 is fixedly connected to one side of the top of the preheating device body 1; a rack 111 is slidably connected to the middle of the groove plate 19; during work, first place the middle trough in the middle of the bow-shaped clamping plate 17, and then pull the rack 111 to slide it in the middle of the groove plate 19. Since the rack 111 and the gear 18 are in a meshing state, the sliding of the rack 111 will push the gear 18 to rotate. The rotation of the gear 18 can drive the bidirectional threaded rod 16 to rotate in the middle of the arc plate 15, and the rotation of the bidirectional threaded rod 16 will push the bow-shaped clamping plate 17 to approach its middle, so that the two bow-shaped clamping plates 17 can clamp the middle trough. When the clamping is completed, the blowtorch 14 can be turned on to preheat the middle trough. Through the clamping effect of the bow-shaped clamping plate 17 on the middle trough, it can prevent the middle trough from being prone to thermal stress due to temperature changes during preheating, resulting in local deformation and distortion of the middle trough, and further increasing the difficulty of subsequent welding and trimming work. Through the meshing of the gear 18 and the rack 111, it can play a certain role in restricting the bidirectional threaded rod 16, thereby improving the stability of the bow-shaped clamping plate 17.
[0024] As Figure 1 , Figure 2 , Figure 3 shown, multiple sets of sliding columns 2 are slidably connected to the top of the arcuate splint 17; extrusion plates 21 are fixedly connected to the bottoms of the sliding columns 2; pulling plates 22 are fixedly connected to the tops of the sliding columns 2; multiple sets of tension springs 23 are connected to the middle of the pulling plates 22; a handle 24 is fixedly connected to the top of the pulling plate 22; during operation, before placing the middle groove at the position of the arcuate splint 17, the handle 24 can be held and pulled upward, so that the sliding columns 2 slide at the arcuate splint 17, thereby raising the extrusion plates 21. At this time, the middle groove can be placed at the position of the arcuate splint 17, and then the handle 24 is released, so that the sliding columns 2 drive the extrusion plates 21 to squeeze downward under the action of gravity and the rebound of the tension springs 23 until the bottoms of the extrusion plates 21 squeeze the middle groove. This step squeezes the middle groove through the extrusion plates 21, thereby playing a role in limiting the middle groove, further improving the position stability of the middle groove during preheating, reducing the situation that it is prone to position deviation under the interference of the outside world, and thus affecting the accuracy of the preheating area.
[0025] As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, multiple sets of guide rails 3 are fixedly connected to the top of the preheating device body 1; multiple sets of guide columns 31 are fixedly connected to one side of the arcuate splint 17; a U-shaped plate 32 is fixedly connected to the end of the guide column 31; a rotating shaft 33 is rotatably connected to the middle of the U-shaped plate 32; a grooved roller 34 is fixedly connected to the middle of the rotating shaft 33; during operation, when 117 moves, it will drive the guide columns 31, the U-shaped plate 32, and the grooved roller 34 to move. At this time, due to the contact between the grooved roller 34 and the surface of the preheating device body 1, the movement of the grooved roller 34 will generate friction with it. Under the action of the frictional force, the rotating shaft 33 can be pushed to rotate in the middle of the U-shaped plate 32. And when the grooved roller 34 rolls, because the groove of the grooved roller 34 is at the middle position of the guide rail 3, the rolling of the grooved roller 34 will be restricted by the guide rail 3, so it rotates linearly along the surface of the guide rail 3. This step, through the mutual cooperation of the grooved roller 34 and the guide rail 3, can play a role in restricting the movement track of the arcuate splint 17, thereby preventing the arcuate splint 17 from being prone to left and right deviation under uneven force or the interference of the outside world when it moves, and thus causing a difference in the positions of the two arcuate splints 17, which is likely to reduce the clamping effect on the middle groove.
[0026] As Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, inclined plates 4 are fixedly connected to both sides of the bow-shaped splint 17; limit blocks 41 are fixedly connected to the bottoms of the inclined plates 4; convex chute grooves 42 are provided on both sides of the top of the preheating device body 1. During operation, when the bow-shaped splint 17 moves, it will drive the inclined plates 4 and the limit blocks 41 to slide along the middle of the convex chute grooves 42. When the limit blocks 41 slide, they will move linearly under the restriction of the convex chute grooves 42. Through the interaction of the convex chute grooves 42 and the limit blocks 41, this step can limit the movement track of the bow-shaped splint 17, thereby further improving the stability of the bow-shaped splint 17 during movement and reducing the situation that it is prone to lateral deviation.
[0027] As Figure 1 , Figure 2 , Figure 3 As shown, multiple brush plates 5 are fixedly connected to one side of the arc-shaped plate 15; multiple bristles 51 are connected to the bottoms of the brush plates 5. During operation, the brush plates 5 play a role in connecting the multiple bristles 51. When the rack 111 slides, it will generate friction with the bristles 51. At this time, under the action of the bristles 51, the surface of the rack 111 can be cleaned. By cleaning the rack 111 in this step, it can prevent dust carried in the air due to the influence of the working environment.
[0028] As Figure 1 , Figure 2 , Figure 3 As shown, gravity balls 6 are fixedly connected to both ends of the pull plate 22. During operation, when the extrusion plate 21 extrudes the middle groove, due to the factor of its own weight, the gravity balls 6 can play a role in strengthening the extrusion force of the extrusion plate 21. Through the action of the gravity balls 6 in this step, the extrusion force of the extrusion plate 21 can be increased, thereby strengthening the extrusion effect of the extrusion plate 21 and reducing the situation that the middle groove is prone to position deviation under the interference of the outside world.
[0029] As Figure 1 , Figure 2 , Figure 3 As shown, friction pads 7 are connected to the middle parts of the bow-shaped splints 17. During operation, when the middle groove is placed at the position of the bow-shaped splint 17, the friction pads 7 will come into contact with the middle groove. Due to the uneven surface of the friction pads 7, the friction force between the middle groove and the bow-shaped splint 17 can be increased. Through the action of the friction pads 7 in this step, the clamping effect of the bow-shaped splint 17 on the middle groove can be further strengthened, thereby improving the stability of the middle groove during preheating.
[0030] Working principle: During operation, first place the middle groove in the middle of the bow-shaped clamp 17, and then pull the rack 111 to slide it in the middle of the groove plate 19. Since the rack 111 and the gear 18 are in a meshed state, the sliding of the rack 111 will drive the gear 18 to rotate. The rotation of the gear 18 can drive the bidirectional threaded rod 16 to rotate in the middle of the arc-shaped plate 15, and the rotation of the bidirectional threaded rod 16 will push the bow-shaped clamp 17 to move closer to its middle, so that the two groups of bow-shaped clamps 17 can clamp the middle groove. After clamping, the blowtorch 14 can be turned on to preheat the middle groove. This step, through the clamping action of the bow-shaped clamp 17 on the middle groove, can prevent the middle groove from easily generating thermal stress due to temperature changes during preheating, thus causing local deformation and distortion of the middle groove, and further increasing the difficulty of subsequent welding and trimming work. Through the meshing of the gear 18 and the rack 111, it can play a certain role in restricting the bidirectional threaded rod 16, thereby improving the stability of the bow-shaped clamp 17. During operation, before placing the middle groove at the bow-shaped clamp 17, hold the handle 24 and pull it upward, so that the sliding column 2 slides at the bow-shaped clamp 17, thereby raising the pressing plate 21. At this time, the middle groove can be placed at the bow-shaped clamp 17, and then release the handle 24 so that the sliding column 2 drives the pressing plate 21 to squeeze downward under the action of gravity and the rebound of the tension spring 23 until the bottom of the pressing plate 21 presses against the middle groove. This step, through the squeezing of the pressing plate 21 on the middle groove, can play a role in limiting the middle groove, and further improve the position stability of the middle groove during preheating, reducing the situation that it is prone to position deviation under the interference of the outside world, thus affecting the accuracy of the preheating area. During operation, when 117 moves, it will drive the guide post 31, the U-shaped plate 32, and the groove roller 34 to move. At this time, due to the contact between the groove roller 34 and the surface of the preheating device body 1, the movement of the groove roller 34 will generate friction with it. Under the action of the frictional force, it can drive the rotating shaft 33 to rotate in the middle of the U-shaped plate 32. And when the groove roller 34 rolls, because its groove is in the middle position of the guide rail 3, the rolling of the groove roller 34 will be restricted by the guide rail 3, so it rotates linearly along the surface of the guide rail 3. This step, through the mutual cooperation of the groove roller 34 and the guide rail 3, can play a role in restricting the movement track of the bow-shaped clamp 17, thus preventing the bow-shaped clamp 17 from easily shifting left and right due to uneven force or external interference during movement, and further causing a difference in the positions of the two groups of bow-shaped clamps 17, which is likely to reduce the clamping effect on the middle groove. During operation, when the bow-shaped clamp 17 moves, it will drive the inclined plate 4 and the limit block 41 to slide along the middle of the convex chute 42. When the limit block 41 slides, it will be restricted by the convex chute 42 to move linearly. This step, through the mutual action of the convex chute 42 and the limit block 41, can play the effect of restricting the movement track of the bow-shaped clamp 17.Furthermore, the stability of the bow-shaped splint 17 during movement is improved again, reducing the situation of its easy left-right deviation. During operation, the brush plate 5 plays a role in connecting multiple groups of bristles 51. When the rack 111 slides, it will generate friction with the bristles 51. At this time, under the action of the bristles 51, the surface of the rack 111 can be cleaned. This step can prevent the dust carried in the air from easily adhering to the rack 111 due to the influence of the working environment, thereby affecting the meshing state of the rack 111 and the gear 18. During operation, when the pressing plate 21 presses the middle groove, due to the factor of its own weight, the gravity ball 6 can play a role in strengthening the pressing force of the pressing plate 21. This step can improve the pressing force of the pressing plate 21 through the action of the gravity ball 6, thereby strengthening the pressing effect of the pressing plate 21 and reducing the situation that the middle groove is prone to position deviation under the interference of the outside world. During operation, when the middle groove is placed at the bow-shaped splint 17, the friction pad 7 will come into contact with the middle groove. Due to the uneven surface of the friction pad 7, the friction force between the middle groove and the bow-shaped splint 17 can be increased. This step can further strengthen the clamping effect of the bow-shaped splint 17 on the middle groove through the action of the friction pad 7, thereby improving the stability of the middle groove during preheating.,
[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.
Claims
1. A preheating device for a middle trough before welding, comprising a preheating device body (1); a plurality of gas tanks (12) are connected to the middle of the preheating device body (1); it is characterized in that: Both ends of the gas tank (12) are connected to the conveying pipeline (13); the end of the conveying pipeline (13) is connected to a blowtorch (14); multiple arc-shaped plates (15) are fixedly connected to the top of the preheating device body (1); a bidirectional threaded rod (16) is connected to the middle of the arc-shaped plate (15); bow-shaped clamping plates (17) are threadedly connected to both ends of the bidirectional threaded rod (16); a gear (18) is fixedly connected to the end of the bidirectional threaded rod (16); a groove plate (19) is fixedly connected to one side of the top of the preheating device body (1); a rack (111) is slidably connected to the middle of the groove plate (19).
2. The preheating device for the middle trough before welding according to claim 1, wherein: Multiple sliding columns (2) are slidably connected to the top of the bow-shaped clamping plate (17); extrusion plates (21) are fixedly connected to the bottom of the sliding columns (2); a pull plate (22) is fixedly connected to the top of the sliding columns (2); multiple tension springs (23) are connected to the middle of the pull plate (22); a handle (24) is fixedly connected to the top of the pull plate (22).
3. The preheating device for the middle trough before welding according to claim 1, characterized in that: Multiple guide rails (3) are fixedly connected to the top of the preheating device body (1); multiple guide columns (31) are fixedly connected to one side of the bow-shaped clamping plate (17); a U-shaped plate (32) is fixedly connected to the end of the guide column (31); a rotating shaft (33) is rotatably connected to the middle of the U-shaped plate (32); a groove roller (34) is fixedly connected to the middle of the rotating shaft (33).
4. The preheating device for the middle trough before welding according to claim 1, characterized in that: Inclined plates (4) are fixedly connected to both sides of the bow-shaped clamping plate (17); limit blocks (41) are fixedly connected to the bottom of the inclined plates (4); convex-shaped sliding grooves (42) are provided on both sides of the top of the preheating device body (1).
5. The preheating device for the middle trough before welding according to claim 1, wherein: Multiple brush plates (5) are fixedly connected to one side of the arc-shaped plate (15); multiple bristles (51) are connected to the bottom of the brush plates (5).
6. The preheating device for welded mining middle trough according to claim 2, characterized in that: Gravity balls (6) are fixedly connected to both ends of the pull plate (22).
7. The preheating device for the middle trough before welding according to claim 1, wherein: Friction pads (7) are connected to the middle of the bow-shaped clamping plates (17).
Citation Information
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