Adjustable supporting device for automatic welding of cylindrical shell of heat exchanger

Abstract

The utility model relates to an adjustable supporting device for automatic welding of a cylindrical shell of a heat exchanger, which comprises two rails laid on the ground, two groups of supporting mechanisms are arranged on the two rails, each group of supporting mechanism comprises a fixed support crossing the two rails, a screw rod is arranged in the fixed support and is perpendicular to the rails, and the fixed support is connected with the screw rod. Two ends of the screw rod are rotatably connected with the fixed bracket, one end of the screw rod is provided with a hand wheel, and two ends of the screw rod are provided with threads with opposite screwing directions; a sliding rail parallel to the lead screw is arranged at the top of the fixed support, two sets of sliding supports are symmetrically installed on the sliding rail and are in threaded connection with the two ends of the lead screw respectively, and riding wheels are installed at the upper ends of the sliding supports. Rollers rolling along the two rails are arranged at the bottom of the fixed bracket, and a locking mechanism is arranged on the fixed bracket and is used for locking the position of the fixed bracket on the rails; according to the automatic welding device, adaptability is improved, and the automatic welding device can adapt to automatic welding of cylinders with different lengths and different diameters.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger manufacturing technology, specifically to an adjustable support device for automatic welding of the cylindrical shell of a heat exchanger. Background Technology

[0002] There are many types of heat exchanger structures, the most common being shell-and-tube heat exchangers, which generally have a cylindrical outer shell made of rolled steel plates with welded end caps at both ends. Due to the large diameter of the cylinder in large heat exchangers, welding the end caps is quite difficult. Currently, there are automated welding robots to replace manual welding operations. When the robot is welding, it needs to place the cylinder on a rotating support device. During the welding process, the rotating support device continuously drives the cylinder to rotate. However, existing rotating support devices usually cannot be adjusted according to the size of the cylinder, resulting in poor adaptability. Summary of the Invention

[0003] The purpose of this invention is to solve the problems existing in the prior art and to provide an adjustable support device for automatic welding of the cylindrical shell of a heat exchanger.

[0004] The specific solution of this utility model is as follows: an adjustable support device for automatic welding of the cylindrical shell of a heat exchanger, comprising two tracks laid on the ground, two sets of support mechanisms on the two tracks, each set of support mechanisms including a fixed bracket spanning the two tracks, a lead screw inside the fixed bracket, the lead screw being perpendicular to the track, both ends of the lead screw being rotatably connected to the fixed bracket, a handwheel being mounted at one end of the lead screw, and the two ends of the lead screw having threads with opposite directions of rotation; a slide rail parallel to the lead screw is provided at the top of the fixed bracket, two sets of sliding brackets are symmetrically mounted on the slide rail, the two sets of sliding brackets being threadedly connected to the two ends of the lead screw respectively, and a support roller being mounted at the upper end of the sliding bracket; a roller that rolls along the two tracks is mounted at the bottom of the fixed bracket, and a locking mechanism is mounted on the fixed bracket to lock the position of the fixed bracket on the track.

[0005] Furthermore, one of the sliding supports is equipped with a speed reducer, the output end of which is connected to the central shaft of the support roller, and the input end of the speed reducer is equipped with a motor.

[0006] Furthermore, the motor is a variable frequency motor, which is equipped with a speed controller to adjust the motor speed.

[0007] Furthermore, the locking mechanism includes a support plate with one end fixedly connected to a fixed bracket. The support plate is located above the track, and a vertical screw is threadedly connected to the support plate. A handwheel is provided at the upper end of the screw, and a damping block is installed at the bottom end of the screw.

[0008] Furthermore, the damping block is made of rubber.

[0009] This utility model has the following advantages: the relative distance between the two sets of support mechanisms can be adjusted arbitrarily, and the distance between the two sets of support rollers on the support mechanism can be adjusted arbitrarily, thus adapting to cylinders of different sizes; after adjustment, the position can be locked to avoid slippage during welding and affecting the accuracy of automatic welding. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0011] Figure 2 yes Figure 1 The main view;

[0012] Figure 3 yes Figure 2 Top view;

[0013] Figure 4 yes Figure 2 AA view;

[0014] Figure 5 This is a schematic diagram of the working state of this utility model;

[0015] In the diagram: 1. Track; 2. Support mechanism A; 3. Support mechanism B; 31. Fixed bracket; 32. Slide rail; 33. Sliding bracket; 34. Support roller; 35. Screw; 36. Support plate; 37. Damping block; 38. Roller; 39. Handwheel; 310. Lead screw; 4. Motor; 5. Welded bracket. Detailed Implementation

[0016] See Figure 1-4 This embodiment describes an adjustable support device for automatic welding of a heat exchanger cylindrical shell. It includes two tracks 1 laid on the ground, with two sets of support mechanisms on each track 1. Each support mechanism includes a fixed bracket 31 spanning the two tracks 1. A lead screw 310 is installed inside the fixed bracket 31, perpendicular to the track 1. Both ends of the lead screw 310 are rotatably connected to the fixed bracket 31. A handwheel 39 is mounted at one end of the lead screw 310, and the two ends of the lead screw 310 have threads with opposite directions of rotation. A slide rail 32 parallel to the lead screw 310 is provided at the top of the fixed bracket 31. Two sets of sliding brackets 33 are symmetrically mounted on the slide rail 32, and the two sets of sliding brackets 33 are threadedly connected to both ends of the lead screw 310. A support roller 34 is mounted on the upper end of each sliding bracket 33. Rollers 38 that roll along the two tracks 1 are mounted at the bottom of the fixed bracket 31. A locking mechanism is installed on the fixed bracket 31 to lock its position on the track 1.

[0017] Furthermore, one of the sliding supports 33 is equipped with a reducer, the output end of which is connected to the central shaft of the support roller 34, and the input end of the reducer is equipped with a motor 4.

[0018] Furthermore, the motor 4 is a variable frequency motor, and the variable frequency motor 4 is equipped with a speed controller to adjust the speed of the motor 4 to adapt to the welding speed of the welding robot.

[0019] Furthermore, the locking mechanism includes a support plate 36 with one end fixedly connected to the fixed bracket 31. The support plate 36 is located above the track 1. A vertical screw 35 is threaded onto the support plate 36. A handwheel 39 is provided at the upper end of the screw 35, and a damping block 37 is installed at the bottom end of the screw 35.

[0020] Furthermore, the damping block 37 is made of rubber. When using this utility model, see... Figure 5 The automatic welding robot is located at one end of track 1 and at the center between the two tracks 1. The automatic welding robot is equipped with a lifting and adjustable welding bracket 5, and an automatic welding gun is installed on the welding bracket 5.

[0021] Place the cylinder stably on support mechanism A2 and support mechanism B3, with both ends of the cylinder supported by rollers 34. Before placement, adjust the cylinder according to its size. If the cylinder is long, increase the distance between the two support mechanisms; if the cylinder is short, decrease the distance. After adjusting the positions of support mechanism A2 and support mechanism B3 relative to the track, tighten the locking devices of the two support mechanisms. This will cause the screw 35 to descend with the damping block 37 to press against the track 1, thus preventing the rollers 38 from rolling on their own and causing the support device to slip, which would affect the welding.

[0022] If the diameter of the cylinder is large, the screw 310 is rotated by the handwheel 39. The screw 310 drives the two sets of sliding brackets 33 to move to both ends through the thread, thereby increasing the distance between the two sets of support rollers 34. Conversely, if the diameter of the cylinder is small, the handwheel 39 is turned in the opposite direction to reduce the distance between the two sets of support rollers 34.

[0023] Regardless of its position, the two sets of sliding supports 33 remain symmetrical about the welding robot, thus aligning the center plane of the supported cylinder with the welding robot, eliminating the need for the welding robot to move.

[0024] In summary, this utility model improves adaptability and can automatically weld cylinders of different lengths and diameters.

Claims

1. An adjustable support device for automatic welding of the outer shell of a heat exchanger cylinder, characterized in that: The system includes two tracks laid on the ground, with two sets of support mechanisms on each track. Each support mechanism includes a fixed bracket spanning the two tracks, with a lead screw inside the fixed bracket. The lead screw is perpendicular to the track, and its two ends are rotatably connected to the fixed bracket. A handwheel is mounted on one end of the lead screw, and the two ends of the lead screw have threads with opposite directions of rotation. The top of the fixed bracket has a slide rail parallel to the lead screw, and two sets of sliding brackets are symmetrically mounted on the slide rail. The two sets of sliding brackets are threaded to the two ends of the lead screw, and the upper end of the sliding brackets is equipped with a support roller. The bottom of the fixed bracket is equipped with rollers that roll along the two tracks, and the fixed bracket is equipped with a locking mechanism to lock the position of the fixed bracket on the track.

2. The adjustable support device for automatic welding of heat exchanger cylinder shell according to claim 1, wherein one of the first and second support members is provided with a plurality of holes for receiving a plurality of bolts. The sliding bracket is equipped with a speed reducer. The output end of the speed reducer is connected to the central shaft of the support roller, and the input end of the speed reducer is equipped with a motor.

3. The adjustable support device for automatic welding of heat exchanger cylinder shell according to claim 2, characterized in that: The motor is a variable frequency motor, which is equipped with a speed controller to adjust the motor speed.

4. The adjustable support device for automatic welding of heat exchanger cylinder shell according to claim 1, characterized in that: The locking mechanism includes a support plate that is fixedly connected to a fixed bracket at one end. The support plate is located above the track. A vertical screw is threaded onto the support plate. A handwheel is provided at the upper end of the screw, and a damping block is installed at the bottom end of the screw.

5. The adjustable support device for automatic welding of heat exchanger cylinder shell according to claim 4, characterized in that: The damping block is made of rubber.

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