H-shaped steel welding equipment for steel structure plant construction

Abstract

This invention discloses an H-beam welding equipment for steel structure workshop construction, including a main base with a guide frame on the main base for limiting the H-beams. An H-beam conveying device is installed on one side of the guide frame, and a connecting component is provided between the H-beam conveying device and the guide frame. One end of the connecting component is connected to the guide frame via a drive mechanism, and the other end is hinged to the H-beam conveying device. At least one positioning component is provided on the guide frame for fixing the H-beams. This invention uses a rotating motor to move the guide frame and H-beams upwards on one side, simultaneously driving the arc-shaped conveyor belt on the arc-shaped frame. Then, a second electric push rod extends into the through groove, pushing the moving protrusion back into the first turntable. At this point, the worker can easily rotate the entire guide frame and clamps to weld the other side without secondary clamping and positioning. Furthermore, restoring the surface to a horizontal position after welding also does not require clamping and positioning.

Description

Technical Field

[0001] This invention pertains to welding technology for steel structure workshops, specifically relating to an H-beam welding device for the construction of steel structure workshops. Background Technology

[0002] Steel structure factory buildings primarily refer to buildings whose main load-bearing components are made of steel, including steel columns, steel beams, steel foundations, steel roof trusses, and steel roofs. Due to increased steel production, most factory buildings are steel structure factory buildings, which can be further divided into light and heavy steel structure factory buildings. The main frame of steel structure factory buildings is mostly constructed using H-beams. H-beams are steel sections with an H-shaped cross-section, also known as universal steel beams, wide-flange (edge) I-beams, or parallel-flange I-beams. When constructing a steel structure factory building using H-beams, it is generally necessary to first erect steel beams and steel load-bearing columns. When erecting the steel load-bearing columns, the H-beams need to be connected to the ground. A backing plate is welded to one end of the H-beam, and then the H-beam is fixed to the ground through the backing plate. The same process is followed when erecting steel beams.

[0003] Traditionally, the welding of H-beams with lining plates is mostly done manually. This welding method is prone to errors in accuracy, wastes manpower, and is inefficient. While there is a dedicated welding frame, most designs only consider rotating and reverse welding, without taking into account the large number of H-beams requiring welding lining plates during the construction of a large factory. There is no automated positioning and conveying equipment to facilitate subsequent welding. Summary of the Invention

[0004] Purpose of the invention: The purpose of this invention is to provide an H-beam welding equipment for steel structure factory construction, which can weld lining plates and achieve automated positioning and conveying.

[0005] Technical Solution: The present invention provides an H-beam welding equipment for steel structure workshop construction, comprising a main base, an H-beam conveying device mounted on one end of the top surface of the main base, and an arc-shaped frame mounted on the other end; a guide frame is provided between the H-beam conveying device and the arc-shaped frame; a connecting component is provided between the H-beam conveying device and the guide frame, one end of the connecting component being connected to the guide frame, and the other end being connected to the H-beam conveying device via a hinge assembly; an arc-shaped conveyor belt is provided on the arc-shaped frame, and a connecting assembly is fixed on the arc-shaped conveyor belt, with a clamp installed at the end of the connecting assembly for fixing a liner plate; the guide frame is provided with... One or more positioning components are provided; the H-beam conveying equipment guides the H-beam into the guide frame, and the positioning components push the H-beam towards the clamp until the H-beam contacts the liner plate, after which the H-beam and the top surface of the liner plate are welded; the center of the arc frame is aligned with the rotation center of the hinge assembly at one end of the connecting piece; the hinge assembly includes a rotary motor, after the H-beam is welded to the top surface of the liner plate, the rotary motor drives the guide frame to rotate around the rotation center of the connecting piece, and the clamp and connecting assembly rotate along the arc on the arc frame to form an inclined state, and rotate after welding to weld the other side.

[0006] Furthermore, the positioning component includes mounting bases fixed on both sides of the guide frame. Each mounting base has multiple mounting brackets fixedly mounted on its top surface. Each mounting bracket extends above the guide frame and is slidably connected to a moving block. A soft rubber wheel is movably connected below each moving block. The multiple soft rubber wheels are connected to each other through a transmission component, and a motor is externally connected to the shaft of one of the soft rubber wheels. The multiple soft rubber wheels are placed inside the H-beam. The movement of the moving block drives the multiple soft rubber wheels to press against the inner walls on both sides of the H-beam, thereby fixing the H-beam. The motor is started to drive the multiple soft rubber wheels to rotate synchronously. The compression deformation of the soft rubber increases the friction between the soft rubber wheels and the H-beam. While rotating, the H-beam is pushed towards the clamp.

[0007] Furthermore, a rectangular through slot is formed on the guide frame, and a movable block is placed inside the rectangular through slot. A first electric push rod is connected between the movable block and the inner wall of the rectangular through slot. The movable block slides in the rectangular through slot by extending and retracting the first electric push rod. When the first electric push rod retracts, it drives the soft rubber wheel to move towards the inner wall of the H-beam through the movable block until the H-beam is squeezed.

[0008] Furthermore, an extension frame is fixed to the side of the mounting bracket, a side shaft is provided on the bottom surface of the extension frame, and a limiting member with a sharp corner is fixed to the bottom of the side shaft, with the sharp part of the limiting member pointing towards the soft rubber wheel.

[0009] Furthermore, a limiting ring is fitted onto the end of the side shaft away from the limiting member with sharp corners, and a limiting strip is provided on the side of the limiting ring, and the limiting strip is fixed on the extension frame; the limiting strip restricts the side shaft to rotate only to the side pointing towards the sharp part of the limiting member with sharp corners.

[0010] Furthermore, the connecting component includes a rectangular connector that is fixedly connected to the arc-shaped conveyor belt on the arc-shaped frame, and a first turntable is retractably connected to one end of the rectangular connector away from the arc-shaped frame.

[0011] Furthermore, a second turntable is movably connected to the outer side of the first turntable via a bearing, and the second turntable is fixedly connected to the clamp.

[0012] Furthermore, a groove is formed at the bottom of the first turntable, a spring is placed in the groove, and a movable protrusion is embedded in the groove, which compresses the spring; a through groove is formed at the bottom of the second turntable corresponding to the movable protrusion; when no external force is applied to the through groove, the movable protrusion extends into the through groove under the elastic thrust of the spring, at which time there is a circumferential limit between the first turntable and the second turntable; when an external force is applied to the through groove, the external force pushes the movable protrusion toward the spring until the movable protrusion is completely disengaged from the through groove, at which time the circumferential limit between the first turntable and the second turntable disappears.

[0013] Furthermore, a mounting chamber is fixed at the bottom of the guide frame near the clamp, and a second electric push rod is mounted on the outside of the mounting chamber; the second electric push rod is used to push the movable protrusion into the interior of the first turntable, and to make the circumferential limit between the second turntable and the first turntable disappear.

[0014] Furthermore, an infrared sensor is installed on the second electric push rod. After the H-beam moves into the area that the infrared sensor can recognize, the infrared sensor monitors the position of the H-beam.

[0015] Beneficial effects: Compared with the prior art, the significant technical effects of this invention are as follows: Multiple electric push rods retract to move and press multiple soft rubber wheels against the edge of the H-beam, thus fixing the H-beam. Then, an external motor connected to the shaft of one of the soft rubber wheels drives the multiple soft rubber wheels to rotate. The increased deformation of the soft rubber wheels increases friction with the H-beam, causing the H-beam to move towards the clamp, facilitating welding of the liner fixed to the clamp. Starting the rotary motor causes the guide frame and the H-beam to move upwards on one side, forming a rotation around the hinged rotation center at one end of the connecting piece. The machine operates synchronously, driving the arc-shaped conveyor belt on the arc-shaped frame, causing the clamp to rotate synchronously at the same angle. Then, the electric push rod two extends into the through groove, pushing the moving protrusion back into the turntable one. At this point, the operator can easily rotate the entire guide frame and clamp, which form a single unit. Welding can be performed on the other side without secondary clamping and positioning. Furthermore, after welding, restoring the horizontal position also does not require clamping and positioning. The H-beam steel conveying equipment can be directly started with the conveying function for automated clamping and rotational reverse welding without secondary positioning. The entire process is convenient, highly efficient, and requires minimal manual labor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the mounting structure of the infrared sensor and the electric push rod of the present invention;

[0018] Figure 3 This is a schematic diagram of the positioning component of the present invention;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 This is a bottom view of the positioning component in this invention;

[0021] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0022] Figure 7 This is a schematic diagram of the connecting component in this invention;

[0023] Figure 8 This is a schematic diagram of the connection structure between the hinge assembly and the connector. Detailed Implementation

[0024] The technical solution of the present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0025] like Figure 1-8 As shown, the present invention relates to an H-beam welding equipment for steel structure workshop construction, specifically involving the following components: H-beam conveying equipment 1, connecting piece 2, guide frame 3, positioning assembly 4, mounting frame 401, mounting base 402, first synchronous belt 403, second synchronous belt 404, driven gear 405, driving gear 406, extension frame 407, side shaft 408, limit piece with sharp corner 409, soft rubber wheel 410, first electric push rod 411, moving block 412, limit strip 413, limit ring 414, clamp 5, connecting assembly 6, torsion spring 601, rectangular connecting piece 602, extension shaft 603, first turntable 604, second turntable 605, spring 606, moving protrusion 607, through groove 608, arc frame 7, main base 8, rotary motor 9, mounting chamber 10, infrared sensor 11, and second electric push rod 12.

[0026] like Figure 1 and Figure 2As shown, an H-beam steel conveying device 1 is installed at one end of the top surface of the main base 8, and an arc-shaped frame 7 is installed at the other end. A guide frame 3 is provided between the H-beam steel conveying device 1 and the arc-shaped frame 7, and the guide frame 3 is fixedly installed on the top surface of the main base 8. The H-beam steel conveying device 1 is used to input the H-beams until they are guided into the guide frame 3, and the guide frame 3 is used to limit the movement of the H-beams. A connecting piece 2 is provided between the H-beam steel conveying device 1 and the guide frame 3. A motor is fixed to one end of the connecting piece 2 and is connected to the guide frame 3 through motor drive; the other end is connected to the H-beam steel conveying device 1 through a hinge assembly. Figure 8 As shown, the hinge assembly includes a rotary motor 9, which is connected to the end of the connector 2 near the H-beam conveying device 1 for transmission. The center of the arc frame 7 is aligned with the rotation center of the hinge assembly at one end of the connector 2. One or more positioning components 4 are provided on the guide frame 3 for fixing the H-beam; in this embodiment, there are two positioning components 4, installed at both ends of the guide frame 3. An arc-shaped conveyor belt is provided on the arc frame 7, and a connecting component 6 is fixed on the arc-shaped conveyor belt. A clamp 5 is installed at the end of the connecting component 6, and the clamp 5 is used to fix the liner plate.

[0027] The H-beam conveying device 1 guides the H-beams into the guide frame 3. The positioning component 4 pushes the H-beams towards the clamp 5 until the H-beams contact the liner plate. Then, the top surface of the H-beams and the liner plate is welded. After welding, the rotary motor 9 drives the guide frame 3 to rotate around the rotation center of the connecting piece 2. Since the H-beams and the top surface of the liner plate have been welded together, the rotary motor 9 in the hinge assembly drives the connecting piece 2, the guide frame 3, the clamp 5, and the connecting component 6 to rotate along the arc on the arc frame 7 to form an inclined state. After welding, the assembly rotates 180 degrees to weld the other side.

[0028] like Figure 3-6As shown, the positioning component 4 includes a mounting bracket 401, a mounting base 402, a first synchronous belt 403, a second synchronous belt 404, a driven gear 405, a driving gear 406, an extension bracket 407, a side shaft 408, a limiting member with a sharp corner 409, a soft rubber wheel 410, a first electric push rod 411, a moving block 412, a limiting strip 413, and a limiting ring 414. The mounting base 402 is fixed to both sides of the guide frame 3. Multiple mounting brackets 401 are fixedly arranged on the top surface of each mounting base 402. The top of each mounting bracket 401 extends above the guide frame 3 and is slidably connected to a moving block 412. A soft rubber wheel 410 is movably connected below each moving block 412. The multiple soft rubber wheels 410 are connected to each other through a transmission component, and a motor is externally connected to the shaft of one of the soft rubber wheels 410. In this embodiment, the transmission component includes a first synchronous belt 403, a second synchronous belt 404, a driven gear 405, and a driving gear 406. The shaft of each soft rubber wheel 410 passes through the moving block 412 and extends to the top of the moving block 412. The shafts of two soft rubber wheels 410 on the same side are first connected by a first synchronous belt 403. Then, a drive gear 406 is fixed on the shaft of one of the soft rubber wheels 410. The drive gear 406 is meshed with a driven gear 405 on one side. The driven gear 405 is movably mounted on the mounting bracket 401. The driven gear 405 is connected to the shaft of the soft rubber wheel 410 on the opposite side by a second synchronous belt 404.

[0029] Multiple soft rubber wheels 410 are placed inside the H-beam. The movement of the moving block 412 drives the multiple soft rubber wheels 410 to press against the inner walls on both sides of the H-beam, thereby fixing the H-beam. The motor is started to drive the multiple soft rubber wheels 410 to rotate synchronously. The compression deformation of the soft rubber 410 increases the friction between the soft rubber wheels 410 and the H-beam. While rotating, the H-beam is pushed towards the clamp 5.

[0030] like Figure 3 and Figure 4 As shown, a rectangular through slot is formed on the guide frame 3, and a movable block 412 is placed inside the rectangular through slot. A first electric push rod 411 is connected between the movable block 412 and the inner wall of the rectangular through slot. The extension and retraction of the first electric push rod 411 causes the movable block 412 to slide within the rectangular through slot. When the first electric push rod 411 retracts, it drives the soft rubber wheel 410 to move towards the inner wall of the H-beam through the movable block 412 until the H-beam is compressed.

[0031] like Figure 4 As shown, an extension frame 407 is fixed to the side of the mounting frame 401. A side shaft 408 is provided on the bottom surface of the extension frame 407. A limit member 409 with a sharp corner is fixed to the bottom of the side shaft 408. The sharp part of the limit member 409 with a sharp corner points to the soft rubber wheel 410, which drives the H-beam to move in the direction of rotation of the clamp.

[0032] like Figure 5 and Figure 6 As shown, a limiting ring 414 is fitted onto the end of the side shaft 408 away from the pointed limiting member 409. A limiting strip 413 is provided on the side of the limiting ring 414, and the limiting strip 413 is fixed to the extension frame 407. The limiting strip 413 restricts the side shaft 408 to rotate only to the side where the pointed part of the limiting member 409 points, preventing it from falling back due to gravity when tilted.

[0033] By setting the limiting ring 414 and the limiting strip 413, the following can be achieved: during the process of the soft rubber wheel 410 extruding the H-beam to produce deformation, the deformation protrusions on both sides extrude the limiting member 409 with sharp corners to form a certain limit. The rubber material is used to achieve automatic limiting, and when the automatic limiting loses its effect, the sharp part of the limiting member 409 with sharp corners and the limiting strip 413 are used to limit the H-beam when the weight is relatively heavy, so that the H-beam falls back, forming a unidirectional movement state. Reverse movement automatically locks it. After the extrusion force of the soft rubber wheel 410 is lost, the limiting will also automatically lose.

[0034] like Figure 7 As shown, the connecting assembly 6 includes a torsion spring 601, a rectangular connector 602, an extension shaft 603, a first turntable 604, a second turntable 605, a spring 606, a movable protrusion 607, and a through groove 608. The rectangular connector 602 is fixedly connected to the arc-shaped conveyor belt on the arc-shaped frame 7, and the end of the rectangular connector 602 away from the arc-shaped frame 7 is retractably connected to the first turntable 604. In this embodiment, the retractable connection is achieved as follows: an extension shaft is fixed on the first turntable 604, and one end of the extension shaft extends into the interior of the rectangular connector 602. A torsion spring 601 is connected between the extension shaft and the inner wall of the rectangular connector. The second turntable 605 is movably connected to the outside of the first turntable 604 via a bearing, and the second turntable 605 is fixedly connected to the clamp 5. A groove is formed at the bottom of the first turntable 604, and a spring 606 is placed in the groove. A movable protrusion 607 is embedded in the groove, and the movable protrusion 607 compresses the spring 606. The bottom of the second turntable 605 has a through groove 608 corresponding to the movable protrusion 607.

[0035] When no external force is applied to the through groove 608, the movable protrusion 607 extends into the through groove 608 under the elastic thrust of the spring 606. At this time, there is a circumferential limit between the first turntable 604 and the second turntable 605. When an external force is applied to the through groove 608, the external force pushes the movable protrusion 607 toward the spring 606 until the movable protrusion 607 is completely disengaged from the through groove 608. At this time, the circumferential limit between the first turntable 604 and the second turntable 605 disappears. In this embodiment, the external force is applied in the following way: Figure 2As shown, a mounting chamber 10 is fixed to the bottom of the guide frame 3 near the clamp 5, and a second electric push rod 12 is mounted on the outside of the mounting chamber 10. After the second electric push rod 12 extends, it directly pushes the moving protrusion 607 into the interior of the first turntable 604, and makes the circumferential limit between the second turntable 605 and the first turntable 604 disappear.

[0036] The second electric push rod 12 is equipped with an infrared sensor 11, which is used to detect the H-beam after it moves a certain distance and then provide feedback. After the H-beam moves into the area that the infrared sensor 11 can recognize, the infrared sensor 11 monitors the position of the H-beam.

[0037] This invention utilizes an H-beam conveying device 1 (Figure 1 is a partial schematic diagram). The H-beam conveying device 1 is an H-beam conveying device. First, the H-beam is conveyed into the guide frame 3. Then, multiple first electric push rods 411 retract, driving multiple soft rubber wheels 410 to move and press against the edge of the H-beam, thus fixing the H-beam. Next, a motor connected to the shaft of one of the soft rubber wheels 410 drives multiple soft rubber wheels 410 to rotate. The increased deformation of the soft rubber wheels 410 increases the friction between them and the H-beam, causing the H-beam to move towards the clamp 5, facilitating the welding of the liner fixed on the clamp 5.

[0038] Then, by starting the rotary motor 9, the guide frame 3 and the H-beam move one end upward, forming a rotation around the hinged rotation center of the connecting piece 2. Simultaneously, the arc conveyor belt on the arc frame 7 is driven, so that the clamp 5 rotates synchronously by the same angle. Then, the second electric push rod 12 is started to extend into the through groove 608, pushing the moving protrusion 607 back into the first turntable 604. At this time, the operator can easily rotate the entire guide frame 3 and clamp 5. The guide frame 3 and clamp 5 form a main body, which can be selected to be welded to the other side. No secondary clamping and positioning is required during the process, and no clamping and positioning is required after welding to restore the horizontal position. The H-beam conveying equipment 1 can directly start the conveying function to automatically clamp and perform rotating reverse welding without secondary positioning. The whole process is convenient, efficient and requires little manual labor.

Claims

1. A welding equipment for H-beams used in the construction of steel structure workshops, comprising a main base (8), characterized in that: The main base (8) has an H-beam steel conveying device (1) installed at one end of its top surface and an arc frame (7) installed at the other end; a guide frame (3) is set between the H-beam steel conveying device (1) and the arc frame (7); A connecting piece (2) is provided between the H-beam steel conveying equipment (1) and the guide frame (3). One end of the connecting piece (2) is connected to the guide frame (3), and the other end is connected to the H-beam steel conveying equipment (1) through a hinge assembly. The arc frame (7) is provided with an arc conveyor belt and a connecting component (6) is fixed on the arc conveyor belt. A clamp (5) is installed at the end of the connecting component (6) and the clamp (5) is used to fix the liner. One or more positioning components (4) are provided on the guide frame (3); The H-beam conveying equipment (1) guides the H-beam into the guide frame (3), and the positioning component (4) pushes the H-beam towards the clamp (5) until the H-beam contacts the liner plate. Then the H-beam is welded to the top surface of the liner plate. The center of the arc frame (7) is the same as the rotation center of the hinge assembly at one end of the connector (2); The hinge assembly includes a rotary motor (9). After welding the H-beam to the top surface of the liner, the rotary motor (9) drives the guide frame (3) to rotate around the rotation center of the connector (2). The clamp (5) and the connecting assembly (6) rotate along the arc on the arc frame (7) to form an inclined state. After welding, they rotate to weld the other side.

2. The H-beam welding equipment for steel structure workshop construction according to claim 1, characterized in that: The positioning component (4) includes mounting bases (402) fixed on both sides of the guide frame (3). Each mounting base (402) has multiple mounting brackets (401) fixedly installed on its top surface. Each mounting bracket (401) extends to the top of the guide frame (3) and is slidably connected to a moving block (412). Each movable block (412) is movably connected to a soft rubber wheel (410) below it; The plurality of soft rubber wheels (410) are connected to each other by a transmission assembly, and the shaft of one of the soft rubber wheels (410) is externally connected to a motor; Multiple soft rubber wheels (410) are placed inside the H-beam. The movement of the moving block (412) drives the multiple soft rubber wheels (410) to squeeze the inner walls on both sides of the H-beam, thereby fixing the H-beam. The motor is started to drive the multiple soft rubber wheels (410) to rotate synchronously. The compression deformation of the soft rubber (410) increases the friction between the soft rubber wheels (410) and the H-beam. While rotating, the H-beam is pushed towards the clamp (5).

3. The H-beam welding equipment for steel structure workshop construction according to claim 2, characterized in that: A rectangular through slot is provided on the guide frame (3), and the moving block (412) is placed inside the rectangular through slot. A first electric push rod (411) is connected between the moving block (412) and the inner wall of the rectangular through slot. The moving block (412) slides in the rectangular through slot by the extension and retraction of the first electric push rod (411). When the first electric push rod (411) retracts, it drives the soft rubber wheel (410) to move toward the inner wall of the H-beam through the moving block (412) until the H-beam is squeezed.

4. The H-beam welding equipment for steel structure workshop construction according to claim 2, characterized in that: The mounting bracket (401) has an extension bracket (407) fixed on its side. The extension bracket (407) has a side shaft (408) on its bottom surface. The side shaft (408) has a limit member (409) with a sharp corner fixed at its bottom. The sharp part of the limit member (409) with a sharp corner points towards the soft rubber wheel (410).

5. The H-beam welding equipment for steel structure workshop construction according to claim 4, characterized in that: A limiting ring (414) is fitted onto one end of the side shaft (408) away from the limiting member (409) with a sharp corner. A limiting strip (413) is provided on the side of the limiting ring (414), and the limiting strip (413) is fixed on the extension frame (407). The limiting strip (413) restricts the side shaft (408) to rotate only to one side of the sharp part of the limiting member (409) with a sharp corner.

6. The H-beam welding equipment for steel structure workshop construction according to claim 1, characterized in that: The connecting component (6) includes a rectangular connector (602) fixedly connected to the arc conveyor belt on the arc frame (7), and a first turntable (604) is retractably connected to one end of the rectangular connector (602) away from the arc frame (7).

7. The H-beam welding equipment for steel structure workshop construction according to claim 6, characterized in that: The second turntable (605) is movably connected to the outside of the first turntable (604) via a bearing, and the second turntable (605) is fixedly connected to the clamp (5).

8. The H-beam welding equipment for steel structure workshop construction according to claim 7, characterized in that: The bottom of the first turntable (604) has a groove, a spring (606) is placed in the groove, and a movable protrusion (607) is embedded in the groove. The movable protrusion (607) compresses the spring (606). The bottom of the second turntable (605) has a through groove (608) corresponding to the movable protrusion (607); When no external force is applied to the through groove (608), the movable protrusion (607) extends into the through groove (608) under the elastic thrust of the spring (606). At this time, there is a circumferential limit between the first turntable (604) and the second turntable (605). When an external force is applied to the through groove (608), the external force pushes the movable protrusion (607) toward the spring (606) until the movable protrusion (607) is completely disengaged from the through groove (608). At this time, the circumferential limit between the first turntable (604) and the second turntable (605) disappears.

9. The H-beam welding equipment for steel structure workshop construction according to claim 1, characterized in that: The bottom of the guide frame (3) near the clamp (5) is fixed with an installation chamber (10), and a second electric push rod (12) is installed on the outside of the installation chamber (10). The second electric push rod (12) is used to push the movable protrusion (607) into the interior of the first turntable (604) and to make the circumferential limit between the second turntable (605) and the first turntable (604) disappear.

10. The H-beam welding equipment for steel structure workshop construction according to claim 9, characterized in that: An infrared sensor (11) is provided on the second electric push rod (12). After the H-beam moves to the area that the infrared sensor (11) can recognize, the infrared sensor (11) monitors the position of the H-beam.

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