A cooling pipe welding machine for cooling tower production

Abstract

The present invention relates to the field of welding technology, and in particular to a cooling pipe welding machine for cooling tower production. The machine comprises a trolley, a mounting plate, a mounting tube, a connecting frame, a conductive block, etc. The mounting plate is mounted on the trolley, the mounting plate is spaced apart with mounting holes, the mounting tube is mounted on the mounting holes of the mounting plate, the connecting frame is connected to the mounting tube, and the conductive block is slidably arranged in the connecting frame. The present invention cooperates with the mounting plate, the mounting tube, the connecting frame, the conductive block, the arc-shaped conductive plate, the arc-shaped rack, the welding head, the limiting mechanism, the rotating mechanism and the power-on mechanism, and can be installed on the mounting plate according to the number of a row of U-shaped tubes on the fixed plate, and then the corresponding number of mounting tubes are extended into the connecting frame through the U-shaped tube, and the position to be welded on the U-shaped tube is made flush with the welding head, so that the welding head can weld all the welding positions of the U-shaped tube, and can also complete the welding of all the U-shaped tubes in a row on the fixed plate at the same time, thereby improving the welding efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a cooling pipe welding machine used in the production of cooling towers. Background Art

[0002] Cooling tower is one of the common equipment in industrial production and power system. Its main function is to dissipate heat to the atmosphere through the water circulation system, so as to reduce the temperature of cooling water. In the design and manufacturing process of cooling tower, the selection and installation of cooling pipes are very important. U-tube is one of the most commonly used pipe types in cooling tower. It is widely favored because of its good heat exchange efficiency, corrosion resistance and easy maintenance. U-tube is a tubular structure with openings at both ends and connected by a bent part. This design allows a single pipe to be used as both an inlet pipe and an outlet pipe, reducing the number of joints and improving the reliability and compactness of the system.

[0003] During the manufacturing process of cooling towers, the welding quality of U-tubes directly affects the overall performance and service life of cooling towers. Traditional welding methods often rely on manual operation, which is not only inefficient, but also greatly affected by the operator's technical level. Although automatic welding can be achieved by using existing U-tube welding machines, most U-tube welding machines on the market are only equipped with a single welding head, which means that only one welding point can be operated at a time, which greatly limits production efficiency. Summary of the invention

[0004] In view of this, the present invention provides a cooling pipe welding machine for cooling tower production, which can solve the disadvantage of low production efficiency caused by the existing U-tube welding machine when in use because it can only operate one welding point at a time.

[0005] The technical scheme is: a cooling pipe welding machine for cooling tower production, including a trolley, a mounting plate, a mounting cylinder, a connecting frame, a conductive block, a spring I, an arc-shaped conductive plate, an arc-shaped rack, a welding head, a limiting mechanism, an adjusting mechanism, a rotating mechanism and an energizing mechanism. The mounting plate is installed on the trolley, the mounting plate is provided with mounting holes spaced apart, the mounting cylinder is installed on the mounting holes of the mounting plate, the connecting frame is connected to the mounting cylinder, the conductive block is slidably arranged in the connecting frame, the two ends of the spring I are respectively connected to the inner side of the connecting frame and the conductive block, the inner side of the connecting frame is symmetrically provided with an arc-shaped conductive plate, the inner side of the connecting frame is symmetrically provided with an arc-shaped rack for sliding, the arc-shaped rack contacts the arc-shaped conductive plate, a welding head is installed on the arc-shaped rack, the welding head is used for welding a U-shaped pipe, the limiting mechanism is used for limiting the mounting cylinder on the mounting plate, the adjusting mechanism is used for adjusting the inclination of the connecting frame, the rotating mechanism is used for driving the welding head to rotate around the welding position of the U-shaped pipe, and the energizing mechanism is used for energizing the conductive block and the arc-shaped conductive plate.

[0006] Furthermore, the limiting mechanism includes a gear cover, a handle, an arc plate, a card bead and a spring II. The gear cover is installed on the mounting cylinder. The gear cover is used to limit the mounting cylinder on the mounting plate. The handle is connected to the gear cover. Arc plates are symmetrically arranged in the gear cover. The sides of the arc plates away from each other are in contact with the inner wall of the mounting cylinder. The sides of the arc plates away from each other are slidably connected with a card bead. A card slot I adapted to the card bead is opened in the mounting cylinder. The two ends of the spring II are respectively connected to the card bead and the arc plate.

[0007] Furthermore, the adjustment mechanism includes an electric push rod and a spur rack, the electric push rod is connected to the mounting plate, the spur rack is slidably arranged on the mounting plate, the spur rack is connected to the telescopic rod of the electric push rod, and the spur rack is meshed with the gear cover.

[0008] Furthermore, the rotating mechanism includes a transmission rod, a gear block, a full gear I, a servo motor and a full gear II. The transmission rod is symmetrically arranged in the connecting frame for rotation. One end of the transmission rod is connected with a gear block at intervals. The gear block is meshed with the arc-shaped rack. The other end of the transmission rod is connected with the full gear I. The servo motor is installed in the installation tube. The full gear II is connected to the output shaft of the servo motor. The full gear I is meshed with the full gear II.

[0009] Furthermore, the power-on mechanism includes a power box, a conductive guide rail I, a conductive guide rail II, a contact head I, a connecting wire I, a contact head II and a connecting wire II. The power box is installed on a trolley, and the conductive guide rails I and II are both installed on a mounting plate. The conductive guide rail II is located on the inner side of the conductive guide rail I. The conductive guide rails I and II are both electrically connected to the power box. The contact head I is symmetrically connected to the connecting frame, and the contact head I moves in the conductive guide rail II. The two ends of the connecting wire I are respectively connected to the contact head I and the conductive block. The contact head II is symmetrically connected to the connecting frame, and the contact head II moves in the conductive guide rail I. The two ends of the connecting wire II are respectively connected to the contact head II and the arc-shaped conductive plate.

[0010] Furthermore, it also includes a positioning mechanism, which includes a guide rod, a sliding frame and a pointer. The guide rods are symmetrically arranged on the connecting frame, the sliding frame is slidably connected between the guide rods, the sliding frame is engraved with scales, and the connecting frame is symmetrically arranged with pointers, which point to the scales on the sliding frame.

[0011] Furthermore, the positioning mechanism also includes a magnetic plate, a connecting rope, a limit block and a spring III. The magnetic plate is connected to the sliding frame, and the two ends of the connecting rope are respectively connected to the sliding frame and the connecting frame. The limit block is symmetrically slidably arranged in the connecting frame. The sliding frame is provided with a slot II adapted to the limit block, and the two ends of the spring III are respectively connected to the limit block and the connecting frame.

[0012] Furthermore, it also includes a prompt mechanism, which includes a touch switch and a prompt light. The touch switch is installed on the inner side of the connecting frame, and the touch switch is located between one of the limit blocks and the connecting frame. The prompt light is installed on the power box, and the prompt light is electrically connected to the touch switch. Beneficial Effects

[0013] 1. The present invention cooperates with a mounting plate, a mounting tube, a connecting frame, a conductive block, an arc-shaped conductive plate, an arc-shaped rack, a welding head, a limiting mechanism, a rotating mechanism and an energizing mechanism. According to the number of U-shaped tubes in a row on the fixed plate, a corresponding number of mounting tubes can be mounted on the mounting plate, and then the U-shaped tubes are extended into the connecting frame, and the positions on the U-shaped tubes to be welded are made flush with the welding heads, so that the welding heads can weld all the welding positions of the U-shaped tubes, and can simultaneously complete the welding of all the U-shaped tubes in a row on the fixed plate, thereby improving the welding efficiency.

[0014] 2. The present invention provides a positioning mechanism, which not only can use the sliding frame to limit the limit block, the connecting frame and the trolley, so that the operator does not need to push the trolley all the time, thereby facilitating the operator's use, but the operator can also judge whether the position to be welded on the U-shaped tube is flush with the welding head according to the indication of the pointer on the scale, thereby facilitating the operator to locate the position to be welded on the U-shaped tube.

[0015] 3. The present invention uses a prompt mechanism so that the operator can know the time when the pointer points to the next value each time only by observing the lighting and extinguishing of the prompt light each time, thereby making it convenient for the operator to know the indication of the pointer on the scale according to the prompt light, thereby further facilitating the operator's use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the mounting plate, mounting tube and connecting frame of the present invention.

[0018] Figure 3 It is a cross-sectional view of the connection frame of the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention.

[0021] Figure 6 It is a structural separation diagram of the limiting mechanism of the present invention.

[0022] Figure 7 It is a cross-sectional view of the limiting mechanism of the present invention.

[0023] Figure 8 It is a three-dimensional structural schematic diagram of the transmission rod, gear block and servo motor of the present invention.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the rotating mechanism of the present invention.

[0025] Fig.10 It is a schematic diagram of the three-dimensional structure of the power box, conductive rail I and conductive rail II of the present invention.

[0026] Fig.11 It is a schematic diagram of the three-dimensional structure of the power supply mechanism of the present invention.

[0027] Fig.12 It is a three-dimensional structural schematic diagram of the sliding frame, magnetic plate and prompt light of the present invention.

[0028] Fig.13 It is a three-dimensional structural schematic diagram of the guide rod, the sliding frame and the pointer of the present invention.

[0029] Fig.14 It is a three-dimensional structural schematic diagram of the connecting rope, spring III and touch switch of the present invention.

[0030] Fig.15 It is a three-dimensional structural schematic diagram of the positioning mechanism and the prompting mechanism of the present invention.

[0031] Parts names and serial numbers in the figure: 1-trolley, 101-fixed plate, 102-U-shaped tube, 2-mounting plate, 201-mounting hole, 3-mounting tube, 4-connecting frame, 5-conductive block, 6-spring Ⅰ, 7-arc conductive plate, 8-arc rack, 9-welding head, 10-gear cover, 11-handle, 12-arc plate, 13-card bead, 1301-card slot Ⅰ, 14-spring Ⅱ, 15-electric push rod, 16-spur rack, 17-transmission rod, 18-tooth block, 19-full gear Ⅰ, 20-servo motor, 21-full gear Ⅱ, 22-power box, 23-conductive guide rail Ⅰ, 24-conductive guide rail Ⅱ, 25-contact head Ⅰ, 26-connecting wire Ⅰ, 27-contact head Ⅱ, 28-connecting wire Ⅱ, 29-guide rod, 30-sliding frame, 31-pointer, 32-magnetic plate, 33-connecting rope, 34-limit block, 3401-slot Ⅱ, 35-spring Ⅲ, 36-touch switch, 37-prompt light. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0033] Embodiment: A cooling pipe welding machine for cooling tower production, see Figure 1-Figure 11As shown, a trolley 1 is included; the trolley 1 is composed of a support plate, universal wheels and a push rod, four universal wheels are symmetrically arranged at the bottom of the support plate, the push rod is connected to the right side of the support plate, and the push rod is made of insulating material.

[0034] It also includes a mounting plate 2, a mounting tube 3, a connecting frame 4, a conductive block 5, a spring Ⅰ6, an arc-shaped conductive plate 7, an arc-shaped rack 8, a welding head 9, a limiting mechanism, an adjusting mechanism, a rotating mechanism and an energizing mechanism; the mounting plate 2 is mounted on the left side of the top of the support plate of the trolley 1, the mounting plate 2 is made of an insulating material, and mounting holes 201 are spaced apart on the mounting plate 2, and the spacing between the mounting holes 201 can be set according to the distribution spacing between the U-shaped tubes 102 on the fixed plate 101; the mounting tube 3 is clamped on the mounting hole 201 of the mounting plate 2; the connecting frame 4 is connected to the left side of the mounting tube 3, the inner side of the connecting frame 4 is a hollow structure, and the connecting frame 4 is made of an insulating material; the conductive block 5 is slidably arranged on the inner side of the connecting frame 4, and the conductive block 5 is made of a conductive material; the left end of the spring Ⅰ6 is connected to the right side of the conductive block 5, and the right end of the spring Ⅰ6 is connected to the right side of the connecting frame 4; the arc-shaped conductive plate 7 is symmetrically arranged on the left side of the inner side of the connecting frame 4, and the arc-shaped conductive plate 7 is made of a conductive material; the front left side of the inner side of the connecting frame 4 The arc-shaped rack 8 is symmetrically arranged for sliding movement, and the arc-shaped rack 8 is located between the arc-shaped conductive plates 7, and the arc-shaped rack 8 is in contact with the arc-shaped conductive plates 7. The arc-shaped rack 8 is made of conductive material; a welding head 9 is installed on the arc-shaped rack 8, and the welding head 9 is used to weld the U-shaped tube 102; the limiting mechanism is used to limit the mounting tube 3 on the mounting plate 2, so as to stabilize the mounting tube 3 on the mounting plate 2; the adjusting mechanism is used to adjust the inclination of the connecting frame 4 so that the connecting frame 4 can be aligned with the U-shaped tube 102. The U-shaped tube 102 is flush with the welding head 9 so that the bent part of the U-shaped tube 102 can extend into the inner side of the connecting frame 4; the rotating mechanism is used to drive the welding head 9 to rotate around the welding position of the U-shaped tube 102, so that the welding head 9 welds the U-shaped tube 102; the energizing mechanism is used to energize the conductive block 5 and the arc-shaped conductive plate 7. When the U-shaped tube 102 contacts the conductive block 5 and the welding head 9, the current can pass through the conductive block 5, the U-shaped tube 102, the welding head 9, the arc-shaped rack 8 and the arc-shaped conductive plate 7 to form a loop.

[0035] See also Figure 4-Figure 7As shown, the limiting mechanism includes a gear cover 10, a handle 11, an arc plate 12, a bead 13 and a spring II 14; the gear cover 10 is sleeved on the right side of the mounting cylinder 3, and a circle of teeth is arranged on the outer side of the gear cover 10. The diameter of the gear cover 10 is larger than the diameter of the mounting hole 201, so that the gear cover 10 can limit the mounting cylinder 3 on the mounting plate 2, thereby preventing the mounting cylinder 3 from falling off from the mounting hole 201; the handle 11 is connected to the right side of the gear cover 10; the inner side of the gear cover 10 is symmetrically provided with an arc plate 12, and the side of the arc plate 12 away from each other is an arc surface, and the curvature of the arc surface is consistent with the mounting hole 201. The curvature of the inner wall of the mounting tube 3 is adapted, and the side of the arc plate 12 that is away from each other is in contact with the inner wall of the mounting tube 3; the side of the arc plate 12 that is away from each other is slidably connected with a card bead 13, and the inner wall of the mounting tube 3 is provided with a card groove Ⅰ1301 adapted to the card bead 13, and the card bead 13 is inserted into the card groove Ⅰ1301, so that the mounting tube 3 can limit the card bead 13, thereby limiting the arc plate 12 and the gear cover 10 to prevent the gear cover 10 from detaching from the right side of the mounting tube 3; one end of the spring Ⅱ14 is connected to the card bead 13, and the other end of the spring Ⅱ14 is connected to the arc plate 12.

[0036] See also Figure 4 As shown, the adjustment mechanism includes an electric push rod 15 and a spur rack 16; the electric push rod 15 is installed on the upper rear side of the right side of the mounting plate 2; the spur rack 16 is slidably set on the right rear side of the mounting plate 2, the top of the spur rack 16 is connected to the telescopic rod of the electric push rod 15, and the spur rack 16 is engaged with the teeth on the gear cover 10.

[0037] See also Figure 8 and Fig. 9 As shown, the rotating mechanism includes a transmission rod 17, a tooth block 18, a full gear I 19, a servo motor 20 and a full gear II 21; the transmission rod 17 is symmetrically arranged inside the connecting frame 4 for rotation front and back, and the number of the transmission rods 17 inside the connecting frame 4 is four; the left end of the transmission rod 17 is connected with a tooth block 18 at intervals, and the tooth block 18 is meshed with the arc-shaped rack 8; the right end of the transmission rod 17 is connected with a full gear I 19; the servo motor 20 is installed on the inner side of the mounting tube 3, and a gap for inserting the arc-shaped plate 12 is left between the outer wall of the servo motor 20 and the inner wall of the mounting tube 3; the full gear II 21 is connected to the output shaft of the servo motor 20, and the full gear I 19 is meshed with the full gear II 21.

[0038] See also Fig.10 and Fig.11As shown, the power supply mechanism includes a power box 22, a conductive rail I 23, a conductive rail II 24, a contact head I 25, a connecting line I 26, a contact head II 27 and a connecting line II 28; the power box 22 is installed on the right side of the top of the support plate of the trolley 1; the conductive rail I 23 is installed on the left side of the mounting plate 2, the conductive rail I 23 is electrically connected to the power box 22, and the conductive rail I 23 is made of conductive material; the conductive rail II 24 is installed on the left side of the mounting plate 2, the conductive rail II 24 is located on the inner side of the conductive rail I 23, the conductive rail II 24 is electrically connected to the power box 22, and the conductive rail II 24 is made of conductive material; the right side of the connection frame 4 is symmetrically connected with the contact head I 25, contact head I25 moves in the conductive guide rail II24, and contact head I25 contacts with the conductive guide rail II24, and contact head I25 is made of conductive material; the left end of connecting wire I26 is connected to the right side of conductive block 5, and the right end of connecting wire I26 is connected to the left side of contact head I25; contact head II27 is symmetrically connected to the right side of connecting frame 4, contact head II27 is located above contact head I25, contact head II27 moves in the conductive guide rail I23, and contact head II27 contacts with the conductive guide rail I23, and contact head II27 is made of conductive material; the left end of connecting wire II28 is connected to the right side of arc-shaped conductive plate 7, and the right end of connecting wire II28 is connected to the left side of contact head II27.

[0039] When in use, first confirm the distribution of the U-shaped tubes 102 on the fixing plate 101, then push the trolley 1 to move until the trolley 1 is facing the fixing plate 101 with the U-shaped tubes 102 installed, and make the trolley 1 face one side of the bent part of the U-shaped tube 102, and then according to the number of U-shaped tubes 102 in a row on the fixing plate 101, connect the corresponding number of mounting tubes 3 into the mounting holes 201 of the mounting plate 2, so that the mounting tubes 3 drive the connecting frame 4, the contact head I 25 and the contact head II 27 to move to the side close to the mounting plate 2, so that the contact head I 25 contacts the conductive guide rail II 24, and the contact head II 27 contacts the conductive guide rail I 23, and then hold the handle 11 to sleeve the gear cover 10 on the right side of the mounting tube 3, so that the teeth on the gear cover 10 mesh with the spur rack 16 (such as Figure 4As shown), the arc plate 12 in the gear cover 10 is inserted into the inner side of the mounting tube 3, so that the arc plate 12 contacts the inner wall of the mounting tube 3. When the card bead 13 on the arc plate 12 contacts the inner wall of the mounting tube 3, the inner wall of the mounting tube 3 will squeeze the card bead 13 to move to the side close to the inside of the arc plate 12, and the spring II 14 is compressed. When the card bead 13 is aligned with the card slot Ⅰ1301, the spring II 14 returns to its original state, and the spring II 14 drives the card bead 13 to move to the side away from the inside of the arc plate 12 and reset, so that the card bead 13 is stuck in the card slot Ⅰ1301, so that the mounting tube 3 limits the card bead 13, and then limits the arc plate 12 and the gear cover 10 to prevent the gear cover 10 from detaching from the right side of the mounting tube 3, and then drives the spur rack through the electric push rod 15. 16 moves downward or upward, so that the spur rack 16 drives the gear cover 10, the mounting cylinder 3 and the connecting frame 4 to rotate or reverse, thereby adjusting the inclination of the connecting frame 4 until the connecting frame 4 can be flush with the U-shaped tube 102 on the fixing plate 101, so that the bent portion of the U-shaped tube 102 can extend into the inner side of the connecting frame 4. After the adjustment, continue to push the trolley 1 to move the trolley 1 to the side close to the fixing plate 101, thereby driving the mounting plate 2, the mounting cylinder 3 and the connecting frame 4 to move to the side close to the fixing plate 101, so that the bent portion of the U-shaped tube 102 on the fixing plate 101 enters the connecting frame 4. When the bent portion of the U-shaped tube 102 contacts the conductive block 5 in the connecting frame 4, the bent portion of the U-shaped tube 102 squeezes the conductive block 5 toward Move to one side close to the installation tube 3, the spring Ⅰ6 is compressed, and under the elastic force of the spring Ⅰ6, the spring Ⅰ6 can press the conductive block 5, so that the conductive block 5 is tightly attached to the bent part of the U-shaped tube 102 (to ensure good contact). When the position to be welded on the U-shaped tube 102 is flush with the welding head 9, stop pushing the trolley 1 to move (the trolley 1 needs to be pushed continuously to prevent the connection frame 4, the installation plate 2 and the trolley 1 from being affected by the elastic force of the spring Ⅰ6 and moving to the side away from the fixed plate 101), and then start the power box 22 to make the current flow in the conductive guide rail Ⅰ23, the contact head Ⅱ27, the connecting wire Ⅱ28, the arc-shaped conductive plate 7, the arc-shaped rack 8, the welding head 9, the U-shaped tube 102, the conductive block 5, the connecting wire Ⅰ26, and the contact head Ⅰ2 5 and the conductive rail II 24 form a loop (although the middle welding head 9 and the U-shaped tube 102 are not in contact, the welding head 9 will form an arc between the U-shaped tube 102, so that the arc formed can not only ensure that the current forms a loop, but also the arc formed will produce high temperature to melt the U-shaped tube 102, thereby forming a weld, and then welding the welding position of the U-shaped tube 102), and then the servo motor 20 drives the full gear II 21 to rotate, so that the full gear II 21 drives the full gear I 19, the transmission rod 17 and the gear block 18 to rotate, so that the gear block 18 drives the arc rack 8 and the welding head 9 to rotate around the welding position of the U-shaped tube 102, so that the welding head 9 welds all the welding positions of the U-shaped tube 102,And it is possible to complete the welding of a row of U-shaped tubes 102 on the fixed plate 101 at the same time. After the welding positions of the U-shaped tubes 102 are all welded, the power box 22 is turned off, and then the trolley 1 is pulled to move away from the fixed plate 101, so that the mounting plate 2, the mounting tube 3 and the connecting frame 4 are moved away from the fixed plate 101, so that the bent part of the U-shaped tube 102 on the fixed plate 101 is separated from the connecting frame 4. When the bent part of the U-shaped tube 102 is separated from the conductive block 5 in the connecting frame 4, the spring I6 returns to its original state, and the spring I6 drives the conductive block 5 to move to the side away from the mounting tube 3 to reset. Then, the above operation is repeated to weld the next row of U-shaped tubes 102 on the fixed plate 101.

[0040] After the U-shaped tube 102 on the fixing plate 101 is completely welded, the handle 11 is pulled to pull the gear cover 10 out from the right side of the mounting tube 3, so that the teeth on the gear cover 10 are separated from the spur rack 16, and the arc plate 12 in the gear cover 10 is separated from the inner side of the mounting tube 3, so that the arc plate 12 is separated from the inner wall of the mounting tube 3. When the card bead 13 on the arc plate 12 leaves the card groove Ⅰ 1301, the inner wall of the mounting tube 3 will squeeze the card bead 13 to move to the side close to the inside of the arc plate 12, and the spring Ⅱ 14 is compressed. When the card bead 13 is separated from the inner wall of the installation tube 3, the spring II 14 returns to its original state, and the spring II 14 drives the card bead 13 to move to the side away from the inside of the arc plate 12 to reset. Finally, the installation tube 3 is completely removed from the installation hole 201 of the installation plate 2, so that the installation tube 3 drives the connection frame 4, the contact head I 25 and the contact head II 27 to move to the side away from the installation plate 2, so that the contact head I 25 is separated from the conductive guide rail II 24, and the contact head II 27 is separated from the conductive guide rail I 23.

[0041] See also Figure 12-Figure 15As shown, it also includes a positioning mechanism, which includes a guide rod 29, a sliding frame 30, a pointer 31, a magnetic plate 32, a connecting rope 33, a limit block 34 and a spring III 35; the connecting frame 4 is symmetrically provided with guide rods 29, and the number of guide rods 29 on the connecting frame 4 is four; the sliding frame 30 is slidably connected between the guide rods 29, and the top and bottom of the sliding frame 30 are engraved with scales; the connecting frame 4 is symmetrically provided with pointers 31, and the number of pointers 31 on the connecting frame 4 is four, and the pointers 31 point to the scales on the sliding frame 30; the magnetic plate 32 is connected to the left side of the sliding frame 30; the left end of the connecting rope 33 is connected to the right side of the sliding frame 30, and the right end of the connecting rope 33 is connected to On the connecting frame 4; a limit block 34 is symmetrically slidably arranged on the left side of the connecting frame 4, and the number of the limit blocks 34 inside the connecting frame 4 is four, and the positions of the four limit blocks 34 on the left side of the connecting frame 4 are respectively the front lower side, the front upper side, the rear lower side and the rear upper side; the front and rear sides of the sliding frame 30 are both provided with a card slot II 3401 adapted to the limit block 34, and the spacing of the card slot II 3401 is consistent with the numerical spacing on the scale; one end of the spring III 35 is connected to the limit block 34, and the other end of the spring III 35 is connected to the inside of the connecting frame 4, the magnetic force of the magnetic plate 32 on the fixed plate 101 is greater than the elastic force of the spring III 35, and the elastic force of the spring III 35 is greater than the elastic force of the spring I6.

[0042] When the mounting plate 2, the mounting tube 3 and the connecting frame 4 move toward the side close to the fixed plate 101, the connecting frame 4 will drive the pointer 31, the limit block 34, the guide rod 29, the sliding frame 30 and the magnetic plate 32 to move toward the side close to the fixed plate 101. When the magnetic plate 32 contacts the fixed plate 101, the magnetic plate 32 will be adsorbed on the fixed plate 101 by magnetic force. At the same time, the fixed plate 101 will block the magnetic plate 32, so that the magnetic plate 32 and the sliding frame 30 stop moving. When the connecting frame 4, the pointer 31, the limit block 34 and the guide rod 29 continue to move toward the side close to the fixed plate 101, the connecting rope 33 will loosen. At the same time, as the limit block 3 4, when the limit block 34 is not aligned with the card slot II 3401, the sliding frame 30 will squeeze the limit block 34 out of the card slot II 3401, and the spring III 35 will be compressed. When the limit block 34 is aligned with the card slot II 3401, the spring III 35 will return to its original state, and the spring III 35 will drive the limit block 34 back to the card slot II 3401 (and by the limit block 34 being inserted into the card slot II 3401, the sliding frame 30 can be used to limit the limit block 34 and the connecting frame 4, thereby limiting the pointer 31, the mounting plate 2 and the trolley 1, so that the operator does not need to keep pushing the trolley 1 to make the connecting frame 4, the pointer 31, the mounting plate 2 and the trolley 1 The trolley 1 will not be affected by the elastic force of the spring Ⅰ6 and move to the side away from the fixed plate 101). At the same time, as the pointer 31 moves, the scale position on the sliding frame 30 pointed by the pointer 31 will change (at the beginning, the scale position on the sliding frame 30 pointed by the pointer 31 is the initial position), and each time the pointer 31 points to the next value, the limit block 34 is just stuck in the next card slot Ⅱ 3401. After that, the operator can judge whether the position to be welded on the U-shaped tube 102 is flush with the welding head 9 according to the indication of the pointer 31 on the scale. In this way, it is convenient for the operator to adjust the position to be welded on the U-shaped tube 102. The welding position is positioned; thereafter, when the mounting plate 2, the mounting tube 3 and the connecting frame 4 move toward the side away from the fixed plate 101, the connecting frame 4 will drive the pointer 31, the limit block 34 and the guide rod 29 to move toward the side away from the fixed plate 101, and the connecting rope 33 will gradually tighten. When the connecting rope 33 is completely tightened, the connecting frame 4 will use the connecting rope 33 to pull the sliding frame 30 and the magnetic plate 32 toward the side away from the fixed plate 101, so that the magnetic plate 32 is separated from the fixed plate 101, and at the same time, the pointer 31 will point to the initial scale position on the sliding frame 30 again, and the limit block 34 will return to the initial slot II 3401.

[0043] See also Fig.12 , Fig.14 and Fig.15As shown, a prompt mechanism is also included, which includes a touch switch 36 and a prompt light 37; the touch switch 36 is installed on the left front side of the connecting frame 4, and the touch switch 36 is located between the limit block 34 inside the connecting frame 4 and the front upper side; the prompt light 37 is installed on the top of the power box 22, and the prompt light 37 is electrically connected to the touch switch 36.

[0044] When the sliding frame 30 squeezes the limit block 34 to leave the slot II 3401, the limit block 34 on the upper front side will squeeze the touch switch 36, so that the touch switch 36 controls the prompt light 37 to light up, and when the spring III 35 drives the limit block 34 back into the slot II 3401, the limit block 34 on the upper front side will release the touch switch 36, so that the touch switch 36 controls the prompt light 37 to go out; in this way, the prompt light 37 can be turned on once each time the limit block 34 is stuck in the next slot II 3401, and the operator only needs to know the time when the pointer 31 points to the next value each time according to the lighting and extinguishing of the prompt light 37 each time, so that when the operator pushes the trolley 1 to move, he can use the prompt light 37 to know the indication of the pointer 31 on the scale, so as to judge whether the position to be welded on the U-shaped tube 102 is flush with the welding head 9.

[0045] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cooling pipe welding machine for cooling tower production, comprising a trolley (1), characterized in that: The invention also comprises a mounting plate (2), a mounting tube (3), a connecting frame (4), a conductive block (5), a spring I (6), an arc-shaped conductive plate (7), an arc-shaped rack (8), a welding head (9), a limiting mechanism, an adjusting mechanism, a rotating mechanism and a power supply mechanism. The mounting plate (2) is mounted on the trolley (1). The mounting plate (2) is provided with mounting holes (201) at intervals. The mounting tube (3) is mounted on the mounting hole (201) of the mounting plate (2). The connecting frame (4) is connected to the mounting tube (3). The conductive block (5) is slidably arranged in the connecting frame (4). The two ends of the spring I (6) are respectively connected to the inner side of the connecting frame (4) and the conductive block (5). , an arc-shaped conductive plate (7) is symmetrically arranged on the inner side of the connection frame (4), an arc-shaped rack (8) is symmetrically slidably arranged on the inner side of the connection frame (4), the arc-shaped rack (8) is in contact with the arc-shaped conductive plate (7), a welding head (9) is installed on the arc-shaped rack (8), the welding head (9) is used to weld the U-shaped tube (102), a limiting mechanism is used to limit the mounting cylinder (3) on the mounting plate (2), an adjusting mechanism is used to adjust the inclination of the connection frame (4), a rotating mechanism is used to drive the welding head (9) to rotate around the welding position of the U-shaped tube (102), and an energizing mechanism is used to energize the conductive block (5) and the arc-shaped conductive plate (7).

2. A cooling pipe welding machine for cooling tower production according to claim 1, characterized in that: The limiting mechanism comprises a gear cover (10), a handle (11), an arc plate (12), a clamping bead (13) and a spring II (14). The gear cover (10) is mounted on the mounting tube (3). The gear cover (10) is used to limit the mounting tube (3) on the mounting plate (2). The handle (11) is connected to the gear cover (10). The gear cover (10) is symmetrically provided with arc plates (12). The sides of the arc plates (12) that are away from each other are in contact with the inner wall of the mounting tube (3). The sides of the arc plates (12) that are away from each other are slidably connected with the clamping bead (13). The mounting tube (3) is provided with a clamping groove I (1301) adapted to the clamping bead (13). The two ends of the spring II (14) are respectively connected to the clamping bead (13) and the arc plate (12).

3. A cooling pipe welding machine for cooling tower production according to claim 2, characterized in that: The adjustment mechanism comprises an electric push rod (15) and a spur rack (16), the electric push rod (15) is connected to the mounting plate (2), the spur rack (16) is slidably arranged on the mounting plate (2), the spur rack (16) is connected to the telescopic rod of the electric push rod (15), and the spur rack (16) is meshed with the gear cover (10).

4. A cooling pipe welding machine for cooling tower production according to claim 3, characterized in that: The rotating mechanism comprises a transmission rod (17), a tooth block (18), a full gear I (19), a servo motor (20) and a full gear II (21). The transmission rod (17) is symmetrically rotatably arranged in the connection frame (4). One end of the transmission rod (17) is connected to a tooth block (18) at intervals. The tooth block (18) meshes with the arc-shaped rack (8). The other end of the transmission rod (17) is connected to the full gear I (19). The servo motor (20) is installed in the installation tube (3). The full gear II (21) is connected to the output shaft of the servo motor (20). The full gear I (19) meshes with the full gear II (21).

5. The cooling pipe welding machine for cooling tower production according to claim 4, characterized in that: The power supply mechanism comprises a power supply box (22), a conductive guide rail I (23), a conductive guide rail II (24), a contact head I (25), a connecting wire I (26), a contact head II (27) and a connecting wire II (28), wherein the power supply box (22) is mounted on a trolley (1), the conductive guide rail I (23) and the conductive guide rail II (24) are both mounted on a mounting plate (2), the conductive guide rail II (24) is located on the inner side of the conductive guide rail I (23), and the conductive guide rail I (23) and the conductive guide rail II (24) are both The connecting frame (4) is electrically connected to a power supply box (22). A contact head I (25) is symmetrically connected to the connecting frame (4). The contact head I (25) moves in the conductive guide rail II (24). Two ends of a connecting wire I (26) are respectively connected to the contact head I (25) and the conductive block (5). A contact head II (27) is symmetrically connected to the connecting frame (4). The contact head II (27) moves in the conductive guide rail I (23). Two ends of a connecting wire II (28) are respectively connected to the contact head II (27) and the arc-shaped conductive plate (7).

6. A cooling pipe welding machine for cooling tower production according to claim 5, characterized in that: The invention also comprises a positioning mechanism, which comprises a guide rod (29), a sliding frame (30) and a pointer (31), wherein the guide rods (29) are symmetrically arranged on the connecting frame (4), the sliding frame (30) is slidably connected between the guide rods (29), a scale is engraved on the sliding frame (30), and a pointer (31) is symmetrically arranged on the connecting frame (4), and the pointer (31) points to the scale on the sliding frame (30).

7. A cooling pipe welding machine for cooling tower production according to claim 6, characterized in that: The positioning mechanism further comprises a magnetic plate (32), a connecting rope (33), a limit block (34) and a spring III (35); the magnetic plate (32) is connected to the sliding frame (30); two ends of the connecting rope (33) are respectively connected to the sliding frame (30) and the connecting frame (4); the limit block (34) is symmetrically slidably arranged in the connecting frame (4); a slot II (3401) adapted to the limit block (34) is formed on the sliding frame (30); and two ends of the spring III (35) are respectively connected to the limit block (34) and the connecting frame (4).

8. The cooling pipe welding machine for cooling tower production according to claim 7, characterized in that: The device also includes a prompt mechanism, which includes a touch switch (36) and a prompt light (37). The touch switch (36) is installed on the inner side of the connection frame (4), and the touch switch (36) is located between one of the limit blocks (34) and the connection frame (4). The prompt light (37) is installed on the power box (22), and the prompt light (37) is electrically connected to the touch switch (36).

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