Thick plate welding constant temperature preheating device

Abstract

This invention discloses a constant-temperature preheating device for thick plate welding, comprising an operating table with an arc-shaped sliding groove; a preheating mechanism including a preheating component, a connecting component, and a positioning component, wherein the preheating component is slidably connected to the operating table, and both the connecting component and the positioning component are mounted on the preheating component. The positioning component is mounted on the connecting component and is used to limit the rotation and bending angle of the two sets of preheating components; and a support mechanism including a support component, a clamping component, and a limiting component. The support component includes a first support column and a second support column, the first support column being fixedly connected to the operating table, and the two sets of clamping components being fixedly connected to the first and second support columns, respectively. Through the cooperation of the connecting component and the positioning component, the preheating component of this invention allows for the bending adjustment of two sets of electric heating plates installed on the same side, adapting to different welding angles of different plates and improving the quality of preheating and welding.

Description

Technical Field

[0001] This invention belongs to the field of welding preheating technology, and particularly relates to a constant temperature preheating device for thick plate welding. Background Technology

[0002] During welding, especially when handling high-strength or heavy materials, problems such as cracking, deformation, and stress concentration are often encountered. Preheating, by increasing the initial temperature of the workpiece, can slow down the cooling rate, reduce welding stress, and decrease the risk of cracking.

[0003] Existing preheating devices can only preheat parallel plates. When the angle between two plates is greater than or less than 180°, the distance between the plates and the preheating device will be uneven, resulting in uneven heating and affecting the quality of welding. Summary of the Invention

[0004] To address the problems in the prior art, the present invention proposes the following technical solution:

[0005] A constant-temperature preheating device for thick plate welding includes:

[0006] The control panel has an arc-shaped sliding groove.

[0007] A preheating mechanism, comprising a preheating component, a connecting component, and a positioning component, wherein the preheating component is slidably connected to the operating table, and both the connecting component and the positioning component are mounted on the preheating component, and the positioning component is mounted on the connecting component to limit the angle of rotation and bending of the two sets of preheating components;

[0008] The preheating assembly includes a keel shaft, the outer ring of which is fixedly fitted with a first gear and a connecting sleeve. Two first gears located at the same end mesh with each other, and the first gears are provided with multiple positioning holes. The outer wall of the connecting sleeve is connected to an electric heating plate fixed by a connecting shaft.

[0009] The connecting assembly includes a keel sleeve, a connecting box is fixedly connected between two keel sleeves, and the two keel sleeves are respectively rotatably sleeved on the outer ring of the keel shaft. A gear shaft is rotatably connected to the inner wall of the connecting box, and a second gear is fixedly sleeved on the outer ring of the gear shaft. A sliding opening is provided on one side of the connecting box, and positioning openings are provided at both ends of the sliding opening.

[0010] The positioning assembly includes a connecting plate, with C-shaped sleeves welded to both ends. Two positioning pins and a fixing rod are fixedly connected to each side. The two positioning pins are respectively inserted into positioning holes in the two first gears. A slider is fixedly connected to one side of the fixing rod. A sliding groove is formed on the inner wall of the connecting box, and the slider is slidably connected to the sliding groove. A rack is fixedly connected to the end of the fixing rod away from the connecting plate. Two racks are located on both sides of the second gear and mesh with it. A positioning frame is fixedly connected to one side of one of the fixing rods. A first rotating shaft is rotatably connected to the positioning frame. A push-pull rod is fixedly sleeved on the outer ring of the first rotating shaft. The push-pull rod passes through the positioning opening and is adapted to the sliding opening. A torsion spring is fixedly connected to one side of the positioning frame, and one end of the torsion spring is fixedly connected to the push-pull rod.

[0011] The support mechanism includes a support component, a clamping component, and a limiting component;

[0012] The support assembly includes a first support column and a second support column. The first support column is fixedly connected to the operating table. Two sets of clamping assemblies are fixedly connected to the first support column and the second support column, respectively. The second support column is slidably connected to the arc-shaped slide groove of the operating table. The limiting assembly is used to limit the sliding position of the second support column.

[0013] As a preferred embodiment of the above technical solution, the preheating component further includes:

[0014] The movable seat is slidably connected to the operating table, and a lifting rod is fixedly connected to its outer side. One end of each of the two keel shafts is slidably connected to the movable seat.

[0015] As a preferred embodiment of the above technical solution, a disc is fixedly fitted around the outer ring of the second support column, and a ball bearing is installed on the side of the disc near the operating table, with the ball bearing abutting against the operating table.

[0016] As a preferred embodiment of the above technical solution, the clamping component includes:

[0017] The U-shaped frame has two U-shaped frames fixedly connected to the first support column and the second support column, respectively. A first sliding roller is rotatably connected to the inner wall of the U-shaped frame near the operating table, and a second sliding roller and a third sliding roller are respectively provided on the inner walls of the other two sides. The second sliding roller is fixedly connected to the U-shaped frame through a roller frame. A U-shaped frame is rotatably connected to the end of the third sliding roller. A lead screw is rotatably connected to the outer wall of the U-shaped frame. The lead screw is threaded to the U-shaped frame, and a knob is fixedly connected to the end of the lead screw away from the U-shaped frame. A guide rod is movably sleeved on the inner ring of the U-shaped frame, and one end of the guide rod is fixedly connected to the U-shaped frame.

[0018] As a preferred embodiment of the above technical solution, the limiting component includes:

[0019] The second rotating shaft has one end rotatably connected to the operating table and the other end fixedly connected to a positioning plate. The second rotating shaft is fixedly connected to a connecting rod, and the end of the connecting rod away from the second rotating shaft is fixedly connected to a collar. The collar is rotatably sleeved on the outer ring of the second support column.

[0020] A positioning rod, one end of which is fixedly connected to the operating table, and the other end is movably fitted with a sleeve, which passes through the positioning plate, and a pressing rod is welded to the outer wall of the sleeve. A spring is fixedly connected to the inner wall of the top of the sleeve, and the bottom end of the spring is fixedly connected to the top end of the positioning rod.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The preheating component of the present invention, through the cooperation of the connecting component and the positioning component, enables the two sets of electric heating plates installed on the same side to be bent and adjusted to adapt to the welding angle of different plates, thereby improving the quality of preheating and welding;

[0023] 2. The present invention uses two sets of clamping components to fix the rear half of the block in it and facilitates their docking. At the same time, the included angle between the two blocks fixed in the clamping components can be adjusted by the limiting component, which can be adjusted according to different welding requirements. Attached Figure Description

[0024] Figure 1 The diagram shown is a structural schematic of the constant temperature preheating device for thick plate welding in the embodiment.

[0025] Figure 2 The diagram shown is a structural schematic of the support mechanism in the embodiment;

[0026] Figure 3 The diagram shown is a structural schematic of the preheating mechanism in the embodiment;

[0027] Figure 4 The diagram shown is a structural schematic of the connecting component and the positioning component in the embodiment;

[0028] Figure 5 The diagram shown is a structural schematic of the connecting component in the embodiment;

[0029] Figure 6 The diagram shown is a structural schematic of the positioning component in the embodiment;

[0030] Figure 7 What is shown is Figure 6 Enlarged schematic diagram of the structure at point A in the diagram;

[0031] Figure 8 The diagram shown is a structural schematic of the limiting component in the embodiment.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100. Preheating mechanism; 110. Preheating component; 111. Keel shaft; 112. First gear; 113. Connecting sleeve; 114. Connecting shaft; 115. Electric heating plate; 116. Moving seat; 117. Lifting rod; 120. Connecting component; 121. Keel sleeve; 122. Connecting box; 123. Sliding port; 124. Positioning port; 125. Gear shaft; 126. Second gear; 130. Positioning component; 131. Connecting plate; 132. C-shaped sleeve; 133. Positioning pin; 134. Fixing rod; 135. Rack; 136. Positioning frame; 137. First rotating shaft; 138. Push 139. Pull rod; 200. Torsion spring; 211. Support mechanism; 212. Support assembly; 213. First support column; 214. Second support column; 215. Disc; 226. Clamping assembly; 227. U-shaped frame; 228. First sliding roller; 229. Roller frame; 220. Second sliding roller; 221. Lead screw; 222. Knob; 223. U-shaped frame; 224. Guide rod; 225. Third sliding roller; 236. Limiting assembly; 237. Second rotating shaft; 238. Positioning plate; 239. Connecting rod; 230. Collar; 231. Positioning rod; 232. Sleeve; 233. Spring; 234. Pressing rod. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Example

[0035] like Figure 1 and Figure 3 As shown, the constant temperature preheating device for thick plate welding includes an operating table and a preheating mechanism 100. The operating table has an arc-shaped sliding groove. The preheating mechanism 100 includes a preheating component 110, a connecting component 120, and a positioning component 130. The preheating component 110 is slidably connected to the operating table. The connecting component 120 and the positioning component 130 are both installed on the preheating component 110. The positioning component 130 is installed on the connecting component 120 and is used to limit the angle of rotation and bending of the two sets of preheating components 110.

[0036] like Figure 3 As shown, the preheating assembly 110 includes a keel shaft 111 and a movable seat 116. The outer ring of the keel shaft 111 is fixedly sleeved with a first gear 112 and a connecting sleeve 113. The two first gears 112 located at the same end mesh with each other, and the first gears 112 have multiple positioning holes. The outer wall of the connecting sleeve 113 is connected to an electric heating plate 115 fixed through a connecting shaft 114. The movable seat 116 is slidably connected to the operating table, and a lifting rod 117 is fixedly connected to its outer side. One end of each of the two keel shafts 111 is slidably connected to the movable seat 116.

[0037] Specifically, the first gear 112 in the two sets of preheating components 110 are of the same size and specifications, and the diameter of the positioning hole is also the same. The preheating component 110, through the cooperation of the connecting component 120 and the positioning component 130, enables the two sets of electric heating plates 115 installed on the same side to be bent and adjusted to adapt to different welding angles of the plates and improve the quality of preheating and welding.

[0038] like Figure 4 and Figure 5 As shown, the connecting assembly 120 includes a keel sleeve 121, a connecting box 122 is fixedly connected between the two keel sleeves 121, and the two keel sleeves 121 are respectively rotatably sleeved on the outer ring of the keel shaft 111. A gear shaft 125 is rotatably connected to the inner wall of the connecting box 122, and a second gear 126 is fixedly sleeved on the outer ring of the gear shaft 125. A sliding opening 123 is opened on one side of the connecting box 122, and positioning openings 124 are opened at both ends of the sliding opening 123.

[0039] Specifically, through the cooperation between the keel sleeve 121 and the keel shaft 111, and the meshing of the two pairs of first gears 112, the other electric heating plate 115 will also rotate when any one of them is rotated.

[0040] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the positioning assembly 130 includes a connecting plate 131. Both ends of the connecting plate 131 are welded with C-shaped sleeves 132. At the same time, two positioning pins 133 and a fixing rod 134 are fixedly connected to both sides respectively. The two positioning pins 133 are respectively inserted into the positioning holes opened in the two first gears 112. A slider is fixedly connected to one side of the fixing rod 134. A sliding groove is opened on the inner wall of the connecting box 122, and the slider is slidably connected to the sliding groove.

[0041] like Figure 6 and Figure 7 As shown, a rack 135 is fixedly connected to one end of the fixed rod 134 away from the connecting plate 131. The two racks 135 are located on both sides of the second gear 126 and are meshed with the second gear 126 for transmission. A positioning frame 136 is fixedly connected to one side of one of the fixed rods 134. The positioning frame 136 is rotatably connected to a first rotating shaft 137. A push-pull rod 138 is fixedly sleeved on the outer ring of the first rotating shaft 137. The push-pull rod 138 passes through the positioning port 124 and is adapted to the sliding port 123. A torsion spring 139 is fixedly connected to one side of the positioning frame 136. One end of the torsion spring 139 is fixedly connected to the push-pull rod 138.

[0042] Specifically, under the force of the first rotating shaft 137, the push-pull rod 138 will always be offset towards the positioning port 124. When the push-pull rod 138 is pulled, it rotates around the first rotating shaft 137 until it is completely disengaged from the positioning port 124. Then, the push-pull rod 138 can be moved inside the sliding port 123. The movement of the push-pull rod 138 will drive the fixed rod 134 to move together. The fixed rod 134 will drive the rack 135 and the connecting plate 131 connected to it to move together. The rack 135 will drive the other fixed rod 134 to move through the meshing transmission with the second gear 126. When the connecting plate 131 drives the positioning pin 133 to completely disengage from the positioning hole, the push-pull rod 138 is pushed into the other positioning port 124 to position the positioning pin 133. At this time, the curvature of the two electric heating plates 115 can be adjusted. After the adjustment is completed, the above operation is repeated in reverse until the positioning pin 133 is reinserted into the positioning hole. Example

[0043] like Figure 1 and Figure 2 As shown, the thick plate welding constant temperature preheating device, compared with Embodiment 1, further includes a support mechanism 200. The support mechanism 200 includes a support component 210, a clamping component 220, and a limiting component 230. The support component 210 includes a first support column 211 and a second support column 212. The first support column 211 is fixedly connected to the operating table. The two sets of clamping components 220 are fixedly connected to the first support column 211 and the second support column 212 respectively. The second support column 212 is slidably connected to the arc-shaped sliding groove of the operating table. The limiting component 230 is used to limit the sliding position of the second support column 212.

[0044] It should be noted that a disc 213 is fixedly fitted on the outer ring of the second support column 212, and a ball bearing is installed on the side of the disc 213 near the operating table, with the ball bearing in contact with the operating table.

[0045] like Figure 2 As shown, the clamping assembly 220 includes a U-shaped frame 221. Two U-shaped frames 221 are fixedly connected to the first support column 211 and the second support column 212, respectively. A first sliding roller 222 is rotatably connected to the inner wall of the U-shaped frame 221 near the operating table. A second sliding roller 224 and a third sliding roller 229 are respectively provided on the inner walls of the other two sides. The second sliding roller 224 is fixedly connected to the U-shaped frame 221 through a roller frame 223. A U-shaped frame 227 is rotatably connected to the end of the third sliding roller 229. A lead screw 225 is rotatably connected to the outer wall of the U-shaped frame 227. The lead screw 225 is threadedly connected to the U-shaped frame 221, and a knob 226 is fixedly connected to the end of the lead screw 225 away from the U-shaped frame 227. A guide rod 228 is movably sleeved on the inner ring of the U-shaped frame 221. One end of the guide rod 228 is fixedly connected to the U-shaped frame 227.

[0046] Specifically, the thick plate is placed on the first sliding roller 222, and then the knob 226 is turned to drive the lead screw 225 to rotate. The U-shaped frame 227 pushes the third sliding roller 229 closer to the thick plate through the cooperation of the guide rod 228, and clamps and fixes the thick plate.

[0047] like Figure 2 and Figure 8 As shown, the limiting component 230 includes a second rotating shaft 231 and a positioning rod 235. The axis of the second rotating shaft 231 coincides with the center of the arc-shaped slide groove. One end of the second rotating shaft 231 is rotatably connected to the operating table, and the other end is fixedly connected to a positioning plate 232. The second rotating shaft 231 is fixedly connected to a connecting rod 233. The end of the connecting rod 233 away from the second rotating shaft 231 is fixedly connected to a collar 234. The collar 234 is rotatably sleeved on the outer ring of the second support column 212. One end of the positioning rod 235 is fixedly connected to the operating table, and the other end is movably sleeved with a sleeve 236. The sleeve 236 passes through the positioning plate 232, and a pressing rod 238 is welded to the outer wall of the sleeve 236. A spring 237 is fixedly connected to the inner wall of the top of the sleeve 236, and the bottom end of the spring 237 is fixedly connected to the top end of the positioning rod 235.

[0048] Specifically, the center of the arc-shaped groove of the operating table coincides with the axis of the second rotating shaft 231, allowing the second support column 212 to slide within the arc-shaped groove with the second rotating shaft 231 as the axis. Simultaneously, the multiple through holes of the positioning plate 232 are arranged circumferentially with the second rotating shaft 231 as the axis. Furthermore, the sleeve 236, under the action of the spring 237, remains positioned at the top of the positioning rod 235 without any external force. Pressing down the pressing rod 238 moves the sleeve 236 downwards until it is completely separated from the positioning plate 232. At this point, the second support column 212 can be pushed to slide within the arc-shaped groove until the angle between the two thick plates is adjusted to the desired angle. Releasing the pressing rod 238 causes the sleeve 236 to re-insert into the through hole of the positioning plate 232 under the action of the spring 237, preventing the second support column 212 from moving within the arc-shaped opening. Preheating or welding can then be performed.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

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The utility model relates to a prehe The support assembly (210) comprises a first support column (211) and a second support column (212), the first support column (211) is fixedly connected with the operation table, two groups of clamping assemblies (220) are fixedly connected with the first support column (211) and the second support column (212) respectively, the second support column (212) is slidably connected with the arc-shaped sliding groove of the operation table, and the limiting assembly (230) is used for limiting the sliding position of the second support column (212).

2. The thick plate welding constant temperature preheating device according to claim 1, characterized by The preheating assembly (110) further comprises: The moving seat (116) is slidably connected with the operation table, the outer side is fixedly connected with the pull rod (117), and one end of each of the two keel shafts (111) is slidably connected with the moving seat (116).

3. The thick plate welding constant temperature preheating device according to claim 1, characterized by The outer ring of the second support column (212) is fixedly sleeved with a disc (213), and the disc (213) is installed with a ball on the side close to the operation table.

4. The thick plate welding constant temperature preheating device according to claim 1, characterized by The clamping assembly (220) comprises: The two U-shaped frames (221) are fixedly connected with the first support column (211) and the second support column (212) respectively, the first sliding roller (222) is rotatably connected to the inner wall of the side of the U-shaped frame (221) close to the operation table, the second sliding roller (224) and the third sliding roller (229) are arranged on the other two inner walls respectively, the second sliding roller (224) is fixedly connected with the U-shaped frame (221) through the roller frame (223), the end of the third sliding roller (229) is rotatably connected with the U-shaped frame (227), the outer wall of the U-shaped frame (227) is rotatably connected with the lead screw (225), the lead screw (225) is threadedly connected with the U-shaped frame (221), one end of the lead screw (225) away from the U-shaped frame (227) is fixedly connected with the knob (226), and the inner ring of the U-shaped frame (221) movably sleeves the guide rod (228), and one end of the guide rod (228) is fixedly connected with the U-shaped frame (227).

5. The thick plate welding constant temperature preheating device according to claim 1, wherein The limiting assembly (230) comprises: One end of the second rotating shaft (231) is rotatably connected with the operation table, the other end is fixedly connected with the positioning plate (232), the second rotating shaft (231) is fixedly connected with the connecting rod (233), one end of the connecting rod (233) away from the second rotating shaft (231) is fixedly connected with the sleeve ring (234), the sleeve ring (234) is rotatably sleeved on the outer ring of the second support column (212); One end of the positioning rod (235) is fixedly connected with the operation table, the other end is movably sleeved with the sleeve (236), the sleeve (236) penetrates through the positioning plate (232), the outer wall of the sleeve (236) is welded with the pressing rod (238), the top inner wall of the sleeve (236) is fixedly connected with the spring (237), and the bottom end of the spring (237) is fixedly connected with the top end of the positioning rod (235).

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