Constant-temperature preheating device for thick plate welding

Abstract

The thick plate welding constant-temperature preheating device comprises an operation table, and an arc-shaped sliding groove is formed in the operation table; the preheating mechanism comprises preheating assemblies, a connecting assembly and a positioning assembly, the preheating assemblies are in sliding connection with the operation table, the connecting assembly and the positioning assembly are both installed on the preheating assemblies, and the positioning assembly is installed on the connecting assembly and used for limiting the rotating and bending angle of the two preheating assemblies; the supporting mechanism comprises a supporting assembly, a clamping assembly and a limiting assembly; the supporting assembly comprises a first supporting column and a second supporting column, the first supporting column is fixedly connected with the operation table, and the two clamping assemblies are fixedly connected with the first supporting column and the second supporting column correspondingly. According to the preheating assembly, the connecting assembly is matched with the positioning assembly, so that the two sets of electric heating plates installed on the same side can be bent and adjusted to adapt to different plate welding angles, and the preheating and welding quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding preheating, and in particular relates to a constant temperature preheating device for thick plate welding. Background Art

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

[0003] The existing preheating device can only preheat parallel plates. When the angle between the two plates is greater than or less than 180°, the distance between the plates and the preheating device will be uneven, which will cause uneven heating and affect the quality of welding. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and proposes the following technical solutions:

[0005] Thick plate welding constant temperature preheating device, including:

[0006] The operating table is provided with an arc-shaped slide;

[0007] A preheating mechanism, the preheating mechanism comprising a preheating assembly, a connecting assembly and a positioning assembly, the preheating assembly is slidably connected to the operating table, the connecting assembly and the positioning assembly are both mounted on the preheating assembly, and the positioning assembly is mounted on the connecting assembly to limit the rotation and bending angles of the two groups of preheating assemblies;

[0008] A supporting mechanism, the supporting mechanism comprising a supporting assembly, a clamping assembly and a limiting assembly;

[0009] 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 groups of clamping assemblies are respectively fixedly connected to the first support column and the second support column, the second support column is slidably connected to the arc-shaped slide groove of the operating table, and the limit assembly is used to limit the sliding position of the second support column.

[0010] As a preferred embodiment of the above technical solution, the preheating component includes:

[0011] A keel shaft, wherein the outer ring fixed sleeve of the keel shaft is provided with a first gear and a connecting sleeve, the two first gears located at the same end are meshed with each other, and the first gear is provided with a plurality of positioning holes, and the outer wall of the connecting sleeve is connected to an electric heating plate fixed by a connecting shaft;

[0012] A moving seat is slidably connected to the operating table, a lifting rod is fixedly connected to the outside, and one end of the two keel shafts is slidably connected to the moving seat.

[0013] As a preferred embodiment of the above technical solution, the connection assembly includes:

[0014] A keel sleeve, a connecting box is fixedly connected between the two keel sleeves, and the two keel sleeves are respectively rotatably sleeved on the outer ring of the keel shaft, the inner wall of the connecting box is rotatably connected with a gear shaft, the outer ring of the gear shaft is fixedly sleeved with a second gear, a sliding opening is opened on one side of the connecting box, and positioning openings are opened at both ends of the sliding opening.

[0015] As a preferred embodiment of the above technical solution, the positioning component includes:

[0016] A connecting plate, both ends of which are welded with C-shaped sleeves, and two positioning pins and a fixing rod are fixedly connected on both sides, the two positioning pins are respectively plugged into the positioning holes opened by the two first gears, one side of the fixing rod is fixedly connected with a slider, the inner wall of the connecting box is opened with a sliding groove, and the slider is slidably connected to the sliding groove.

[0017] As a preferred embodiment of the above technical solution, one end of the fixing rod away from the connecting plate is fixedly connected to a rack, and the two racks are respectively located on both sides of the second gear and are meshed with the second gear for transmission. One side of one of the fixing rods is fixedly connected to a positioning frame, and the positioning frame is rotatably connected to the first rotating shaft. The outer ring fixing sleeve of the first rotating shaft is provided with a push-pull rod, and the push-pull rod passes through the positioning port and is adapted to the sliding port. One side of the positioning frame is fixedly connected to a torsion spring, and one end of the torsion spring is fixedly connected to the push-pull rod.

[0018] As a preferred embodiment of the above technical solution, the outer ring fixing sleeve of the second support column is provided with a disc, and a ball is installed on the side of the disc close to the operating table, and the ball contacts the operating table.

[0019] As a preferred embodiment of the above technical solution, the clamping assembly includes:

[0020] A C-shaped frame, the two C-shaped frames are fixedly connected to the first support column and the second support column respectively, the inner wall of the C-shaped frame on one side close to the operating table is rotatably connected with the first sliding roller, and the inner walls on the other two sides are respectively provided with a second sliding roller and a third sliding roller, the second sliding roller is fixedly connected to the C-shaped frame through a roller frame, the end of the third sliding roller is rotatably connected to the U-shaped frame, the outer wall of the U-shaped frame is rotatably connected with a screw rod, the screw rod is threadedly connected to the C-shaped frame, and the end of the screw rod away from the U-shaped frame is fixedly connected with a knob, the inner ring movable sleeve of the C-shaped frame is provided with a guide rod, and one end of the guide rod is fixedly connected to the U-shaped frame.

[0021] As a preferred embodiment of the above technical solution, the limit assembly includes:

[0022] A second rotating shaft, one end of which is rotatably connected to the operating table, and the other end of which is fixedly connected to a positioning plate, the second rotating shaft is fixedly connected to a connecting rod, and one end of the connecting rod away from the second rotating shaft is fixedly connected to a collar, and the collar is rotatably sleeved on the outer ring of the second supporting column;

[0023] A positioning rod, one end of which is fixedly connected to the operating table, and the other end of which is provided with a sleeve on the outer ring. The sleeve 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 top inner wall of the sleeve, and the bottom end of the spring is fixedly connected to the top end of the positioning rod.

[0024] The beneficial effects of the present invention are:

[0025] 1. The preheating assembly of the present invention cooperates with the connecting assembly and the positioning assembly, so that the two sets of electric heating plates installed on the same side can be bent and adjusted to adapt to different plate welding angles and improve the quality of preheating and welding;

[0026] 2. The present invention uses two sets of clamping components to fix the back half of the block and facilitate docking them together. At the same time, the angle between the two thick plates fixed in the clamping components can be adjusted through the limiting component, which is convenient for adjustment according to different welding requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 What is shown is a schematic diagram of the structure of a constant temperature preheating device for thick plate welding in an embodiment;

[0028] Figure 2 What is shown is a schematic diagram of the structure of the support mechanism in the embodiment;

[0029] Figure 3 What is shown is a schematic diagram of the structure of the preheating mechanism in the embodiment;

[0030] Figure 4 What is shown is a schematic diagram of the structure of the connecting component and the positioning component in the embodiment;

[0031] Figure 5 What is shown is a schematic diagram of the structure of the connection assembly in the embodiment;

[0032] Figure 6 What is shown is a schematic diagram of the structure of the positioning assembly in the embodiment;

[0033] Figure 7 It is shown that Figure 6 A schematic diagram of the structure enlargement at point A;

[0034] Figure 8 What is shown is a schematic diagram of the structure of the limit assembly in the embodiment.

[0035] Description of reference numerals:

[0036] 100, preheating mechanism; 110, preheating assembly; 111, keel shaft; 112, first gear; 113, connecting sleeve; 114, connecting shaft; 115, electric heating plate; 116, moving seat; 117, lifting rod; 120, connecting assembly; 121, keel sleeve; 122, connecting box; 123, sliding mouth; 124, positioning mouth; 125, gear shaft; 126, second gear; 130, positioning assembly; 131, connecting plate; 132, C-shaped clamping sleeve; 133, positioning pin; 134, fixing rod; 135, rack; 136, positioning frame; 137, first rotating shaft; 138, push rod Pull rod; 139, torsion spring; 200, supporting mechanism; 210, supporting assembly; 211, first supporting column; 212, second supporting column; 213, disc; 220, clamping assembly; 221, U-shaped frame; 222, first sliding roller; 223, roller frame; 224, second sliding roller; 225, screw rod; 226, knob; 227, U-shaped frame; 228, guide rod; 229, third sliding roller; 230, limiting assembly; 231, second rotating shaft; 232, positioning plate; 233, connecting rod; 234, collar; 235, positioning rod; 236, sleeve; 237, spring; 238, pressing rod. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0038] Example 1

[0039] like Figure 1 and Figure 3 As shown, a constant temperature preheating device for thick plate welding includes an operating table and a preheating mechanism 100. The operating table is provided with an arc-shaped slide 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 to limit the rotation and bending angles of the two groups of preheating components 110.

[0040] like Figure 3 As shown, the preheating assembly 110 includes a keel shaft 111 and a movable seat 116. The outer ring fixed sleeve of the keel shaft 111 is provided with a first gear 112 and a connecting sleeve 113. The two first gears 112 located at the same end are meshed with each other, and the first gear 112 is provided with a plurality of positioning holes. The outer wall of the connecting sleeve 113 is connected to an electric heating plate 115 fixed by a connecting shaft 114. The movable seat 116 is slidably connected to the operating table, and a lifting rod 117 is fixedly connected to the outside. One end of the two keel shafts 111 is slidably connected to the movable seat 116.

[0041] Specifically, the first gears 112 in the two groups of preheating components 110 are of the same size and specifications, and the apertures of the positioning holes are also the same. The preheating component 110 cooperates with the connecting component 120 and the positioning component 130 so that the two groups of electric heating plates 115 installed on the same side can be bent and adjusted to adapt to different plate welding angles and improve the quality of preheating and welding.

[0042] 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, the inner wall of the connecting box 122 is rotatably connected to a gear shaft 125, and the outer ring of the gear shaft 125 is fixedly sleeved with a second gear 126, 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.

[0043] 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, when any one of the electric heating plates 115 is rotated, the other one will also rotate.

[0044] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the positioning assembly 130 includes a connecting plate 131, both ends of which are welded with C-shaped sleeves 132, and two positioning pins 133 and a fixing rod 134 are fixedly connected on both sides, the two positioning pins 133 are respectively plugged into the positioning holes opened in the two first gears 112, and a slider is fixedly connected to one side of the fixing rod 134, and a sliding groove is opened on the inner wall of the connecting box 122, and the slider is slidably connected to the sliding groove.

[0045] like Figure 6 and Figure 7 As shown, one end of the fixing rod 134 away from the connecting plate 131 is fixedly connected to a rack 135, and the two racks 135 are respectively located on both sides of the second gear 126, and are both meshed with the second gear 126 for transmission. One side of one of the fixing rods 134 is fixedly connected to a positioning frame 136, and the positioning frame 136 is rotatably connected to a first rotating shaft 137. The outer ring fixed sleeve of the first rotating shaft 137 is provided with a push-pull rod 138, and the push-pull rod 138 passes through the positioning port 124 and is adapted to the sliding port 123. One side of the positioning frame 136 is fixedly connected to a torsion spring 139, and one end of the torsion spring 139 is fixedly connected to the push-pull rod 138.

[0046] Specifically, under the action of the first rotating shaft 137, the push-pull rod 138 will always deviate towards the direction of the positioning hole 124. When the push-pull rod 138 is pulled to rotate around the first rotating shaft 137 until it is completely disengaged from the positioning hole 124, the push-pull rod 138 can be pulled to move inside the sliding hole 123. The movement of the push-pull rod 138 will drive the fixing rod 134 to move together, and the fixing rod 134 will drive the rack 135 and the connecting plate 131 connected thereto to move together. The rack 135 will drive the other fixing 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 hole 124, thereby positioning the position of 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.

[0047] Example 2

[0048] like Figure 1 and Figure 2 As shown, the constant temperature preheating device for thick plate welding, compared with Example 1, this embodiment also includes a support mechanism 200, the support mechanism 200 includes a support assembly 210, a clamping assembly 220 and a limit assembly 230; the support assembly 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 groups of clamping assemblies 220 are respectively fixedly connected to the first support column 211 and the second support column 212, the second support column 212 is slidably connected to the arc-shaped slide groove of the operating table, and the limit assembly 230 is used to limit the sliding position of the second support column 212.

[0049] It should be noted that the outer ring of the second support column 212 is fixedly sleeved with a disc 213 , and a ball bearing is installed on the side of the disc 213 close to the operating table, and the ball bearing contacts the operating table.

[0050] like Figure 2 As shown, the clamping assembly 220 includes a C-shaped frame 221, and the two C-shaped frames 221 are fixedly connected to the first support column 211 and the second support column 212 respectively. The inner wall of the C-shaped frame 221 on one side close to the operating table is rotatably connected to the first sliding roller 222, and the inner walls on the other two sides are respectively provided with a second sliding roller 224 and a third sliding roller 229. The second sliding roller 224 is fixedly connected to the C-shaped frame 221 through a roller frame 223, and the end of the third sliding roller 229 is rotatably connected to a U-shaped frame 227. The outer wall of the U-shaped frame 227 is rotatably connected to a screw rod 225, which is threadedly connected to the C-shaped frame 221, and the end of the screw rod 225 away from the U-shaped frame 227 is fixedly connected to a knob 226. The inner ring movable sleeve of the C-shaped frame 221 is provided with a guide rod 228, and one end of the guide rod 228 is fixedly connected to the U-shaped frame 227.

[0051] Specifically, the thick plate is placed on the first sliding roller 222, and then the knob 226 is turned to drive the screw rod 225 to rotate, and the U-shaped frame 227 pushes the third sliding roller 229 to approach the thick plate through the cooperation of the guide rod 228, so as to clamp and fix the thick plate.

[0052] like Figure 2 and Figure 8 As shown, the limiting assembly 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 sliding 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 ring 234. The 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 to the operating table, and the other end of the outer ring 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 top inner wall of the sleeve 236, and the bottom end of the spring 237 is fixedly connected to the top of the positioning rod 235.

[0053] Specifically, the center of the arc-shaped slide groove of the operating table coincides with the axis of the second rotating shaft 231, so that the second support column 212 can slide in the arc-shaped slide groove with the second rotating shaft 231 as the axis. At the same time, the multiple through holes of the positioning plate 232 are arranged in a circle with the second rotating shaft 231 as the axis, and the sleeve 236 is acted on by the force of the spring 237 so that the sleeve 236 will always be located on the top of the positioning rod 235 without any external force. Pressing the pressing rod 238 downward drives the sleeve 236 to move downward together until the sleeve 236 is completely separated from the positioning plate 232. At this time, the second support column 212 can be pushed to slide in the arc-shaped slide groove until the angle between the two thick plates is adjusted to the desired angle, and the pressing rod 238 is released. At this time, the sleeve 236 will be reinserted into the through hole of the positioning plate 232 through the force of the spring 237, so that the second support column 212 cannot move in the arc-shaped opening, and preheating or welding can be performed at this time.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. Thick plate welding constant temperature preheating device, characterized in that: include: The operating table is provided with an arc-shaped slide; A preheating mechanism (100), the preheating mechanism (100) comprising a preheating component (110), a connecting component (120) and a positioning component (130), the preheating component (110) being slidably connected to an operating table, the connecting component (120) and the positioning component (130) being both mounted on the preheating component (110), and the positioning component (130) being mounted on the connecting component (120) for limiting the rotation and bending angles of the two groups of preheating components (110); A support mechanism (200), the support mechanism (200) comprising a support assembly (210), a clamping assembly (220) and a limiting assembly (230); The support assembly (210) comprises a first support column (211) and a second support column (212); the first support column (211) is fixedly connected to an operating table; two groups of clamping assemblies (220) are respectively fixedly connected to the first support column (211) and the second support column (212); the second support column (212) is slidably connected to an arc-shaped slide groove of the operating table; and the limiting assembly (230) is used to limit the sliding position of the second support column (212).

2. The thick plate welding constant temperature preheating device according to claim 1 is characterized in that: The preheating assembly (110) comprises: A keel shaft (111), wherein the outer ring fixed sleeve of the keel shaft (111) is provided with a first gear (112) and a connecting sleeve (113), the two first gears (112) located at the same end are meshed with each other, and the first gear (112) is provided with a plurality of positioning holes, and the outer wall of the connecting sleeve (113) is connected to an electric heating plate (115) fixed via a connecting shaft (114); A movable seat (116) is slidably connected to the operating table, and a lifting rod (117) is fixedly connected to the outer side. One end of the two keel shafts (111) is slidably connected to the movable seat (116).

3. The thick plate welding constant temperature preheating device according to claim 2 is characterized in that: The connection assembly (120) comprises: A keel sleeve (121), a connection 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), the inner wall of the connection box (122) is rotatably connected to a gear shaft (125), the outer ring of the gear shaft (125) is fixedly sleeved with a second gear (126), a sliding opening (123) is opened on one side of the connection box (122), and positioning openings (124) are opened at both ends of the sliding opening (123).

4. The thick plate welding constant temperature preheating device according to claim 3 is characterized in that: The positioning assembly (130) comprises: A connecting plate (131), both ends of which are welded with C-shaped sleeves (132), and two positioning pins (133) and a fixing rod (134) are fixedly connected on both sides, the two positioning pins (133) are respectively plugged into the positioning holes provided in the two first gears (112), one side of the fixing rod (134) is fixedly connected with a slider, the inner wall of the connecting box (122) is provided with a sliding groove, and the slider is slidably connected to the sliding groove.

5. The thick plate welding constant temperature preheating device according to claim 4 is characterized in that: One end of the fixing rod (134) away from the connecting plate (131) is fixedly connected to a rack (135), and the two racks (135) are respectively located on both sides of the second gear (126) and are both meshed with the second gear (126) for transmission. One side of one of the fixing rods (134) is fixedly connected to a positioning frame (136), and the positioning frame (136) is rotatably connected to a first rotating shaft (137). The outer ring of the first rotating shaft (137) is fixedly sleeved with a push-pull rod (138), and the push-pull rod (138) passes through the positioning port (124) and is adapted to the sliding port (123). One side of the positioning frame (136) is fixedly connected to a torsion spring (139), and one end of the torsion spring (139) is fixedly connected to the push-pull rod (138).

6. The thick plate welding constant temperature preheating device according to claim 1 is characterized in that: The outer ring fixed sleeve of the second support column (212) is provided with a disc (213), and a ball is installed on the side of the disc (213) close to the operating table, and the ball contacts the operating table.

7. The thick plate welding constant temperature preheating device according to claim 1 is characterized in that: The clamping assembly (220) comprises: A U-shaped frame (221), wherein the two U-shaped frames (221) are respectively fixedly connected to the first support column (211) and the second support column (212); the inner wall of one side of the U-shaped frame (221) close to the operating table is rotatably connected to a first sliding roller (222); the inner walls of the other two sides are respectively provided with a second sliding roller (224) and a third sliding roller (229); the second sliding roller (224) is fixedly connected to the U-shaped frame (221) through a roller frame (223); the third sliding roller (229) is rotatably connected to the inner wall of the U-shaped frame (221) close to the operating table; The end of the U-shaped frame (29) is rotatably connected to a U-shaped frame (227), the outer wall of the U-shaped frame (227) is rotatably connected to a screw rod (225), the screw rod (225) is threadedly connected to the U-shaped frame (221), and one end of the screw rod (225) away from the U-shaped frame (227) is fixedly connected to a knob (226), the inner ring movable sleeve of the U-shaped frame (221) is provided with a guide rod (228), and one end of the guide rod (228) is fixedly connected to the U-shaped frame (227).

8. The thick plate welding constant temperature preheating device according to claim 1 is characterized in that: The limiting component (230) comprises: A second rotating shaft (231), 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), and one end of the connecting rod (233) away from the second rotating shaft (231) is fixedly connected to a collar (234), and the collar (234) is rotatably sleeved on the outer ring of the second support column (212); A positioning rod (235), one end of which is fixedly connected to the operating table, and the other end of which is provided with a sleeve (236) on the outer ring, the sleeve (236) passes through the positioning plate (232), and a pressing rod (238) is welded to the outer wall of the sleeve (236), and a spring (237) is fixedly connected to the top inner wall of the sleeve (236), and the bottom end of the spring (237) is fixedly connected to the top end of the positioning rod (235).

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