An operating table for assembling a portal steel frame structure

Abstract

The present invention discloses an operating table for assembling a portal steel frame structure, relating to the technical field of steel structure assembling equipment, comprising a table, a limit frame body is installed on the table, a servo motor is installed on one side of the limit frame body, a reciprocating screw rod is installed on the output end of the servo motor, a driving slider is installed on the reciprocating screw rod, a reinforcement frame is installed on the top and bottom of the driving slider, a detection frame is provided on one side of the reinforcement frame, a detection sleeve is installed on the detection frame, a movable plate body is installed inside the detection sleeve, and a detection shaft body is installed on one side of the movable plate body. This operating table for assembling a portal steel frame structure uses the detection shaft body to detect the truss, which can effectively avoid the horizontal deviation of the truss. The end of the detection shaft body contacts the bottom of the truss. If there is a tilt, the compression spring drives the detection shaft body to move upward or downward through the movable plate body, and the touch shaft body on the movable plate body contacts any one of the sensing elements, so that the horizontality of the truss can be quickly known.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure assembling equipment, in particular to an operating table for assembling a portal steel frame structure. Background Art

[0002] The gantry steel frame structure assembly operating table is a workbench used to assist in the assembly of gantry steel frame structures. The operating table is used to provide a stable working platform on which workers can use measuring tools to perform precise positioning and calibration work, which helps to ensure the accurate splicing of steel components and the stability of the overall structure. During the assembly process, the operating table can support and stabilize the steel components being assembled to prevent them from moving or deforming. The operating table can also serve as an auxiliary platform for welding work, providing workers with a stable working environment. Workers can perform welding operations on the operating table to ensure the quality and accuracy of the welds. The operating table is usually equipped with a storage area, where workers can place the required tools and materials on the operating table for easy access at any time, which helps to improve work efficiency and reduce interference during the work process.

[0003] During the assembly process of the portal steel frame structure, it is first necessary to prepare the corresponding materials, such as steel, high-strength bolts, welding materials, and fasteners, and then determine the installation position of the main body (i.e., steel column) of the portal steel frame structure. After the main body installation position is determined, install the corresponding horizontal support (i.e., truss) to ensure that the horizontal support is firmly connected to the steel frame main body, and use high-strength bolts or welding to connect the horizontal support and the steel frame main body. During the assembly process, since the trusses on the portal steel frame have a certain length, during the assembly process of the trusses, the staff often make operational errors, resulting in errors in the assembly of the trusses (i.e., the trusses have horizontal deviations). When the trusses have horizontal deviations, it will cause uneven force on various parts of the trusses. Under long-term force, the portal steel frame structure may be deformed or damaged. For this reason, we propose an operating table for assembling portal steel frame structures. Summary of the Invention

[0004] The purpose of the present invention is to provide an operating table for assembling a portal steel frame structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an operating table for assembling a portal steel frame structure, comprising a table, a pair of symmetrically distributed steel columns are installed on the table, a mounting frame for limiting the installation of the steel columns is symmetrically installed on the table, a limiting frame is fixedly installed on the table, a servo motor is fixedly installed on the outer wall of one side of the limiting frame, and a reciprocating screw is fixedly installed on the output end of the servo motor, wherein the reciprocating screw is located inside the limiting frame, and the end of the reciprocating screw is rotatably connected to the inner wall of the other side of the limiting frame;

[0006] The cam is fixedly provided with a toothed plate on the top and bottom of the toothed plate, and a toothed plate is fixedly provided with a toothed plate on the bottom of the toothed plate, and a toothed plate is fixedly provided with a toothed plate on the top and bottom of the toothed plate.

[0007] Preferably, the connecting mechanism includes a support plate frame fixedly connected to the reinforcing frame, and a plurality of limit shafts are fixedly installed on the support plate frame, the plurality of limit shafts all pass through the detection frame, and the detection frame slides at the upper limit of the limit shaft, and a plurality of reset springs are connected between the detection frame and the support plate frame, the reset springs correspond one-to-one to the limit shafts, and the outer wall of the limit shaft does not contact the reset spring.

[0008] Preferably, an extension frame is installed inside the detection frame, and a force-bearing block is installed inside the extension frame in sliding connection with its inner wall, and an extension plate frame is fixedly installed on one side of the force-bearing block, the end of the extension plate frame passes through the inner wall of the extension frame and extends to the outside, and a force-bearing plate frame is fixedly installed on the end of the extension plate frame located on the outside, wherein a spring member is also fixedly connected between the side of the force-bearing block away from the extension plate frame and the extension frame.

[0009] Preferably, an extension shaft body is fixedly installed on the side of the movable plate body away from the detection shaft body, and the end of the extension shaft body passes through the inner wall of the detection sleeve and the top of the detection frame in sequence and extends to the inside of the detection frame, and a slot is provided near the end of the extension shaft body, and a limiting plate frame is fixedly installed on the top of the force-bearing block body, and the limiting plate frame passes through the inner wall of the top of the extension frame and extends to the inside of the detection frame, and the limiting plate frame is slidingly connected to the inner wall of the top of the extension frame, and a clamping rod frame is fixedly installed on one side of the limiting plate frame, and the slot is located on the movement trajectory of the clamping rod frame.

[0010] Preferably, a connecting shaft is fixedly installed on the force-bearing plate frame, and a force-bearing magnetic plate is fixedly installed on the end of the connecting shaft, wherein a sliding groove is provided on the side of the detection frame close to the supporting plate frame, and the force-bearing magnetic plate slides within the sliding groove, and a force-applying magnetic plate is fixedly installed on the side of the supporting plate frame close to the detection frame, and the force-bearing magnetic plate is subjected to the attraction force of the force-applying magnetic plate during the movement of the connecting shaft.

[0011] Preferably, a plurality of rolling balls are installed on one side of the detection frame and the outer wall of the force-bearing plate frame.

[0012] Preferably, fixed plate frames are fixedly installed on both sides of the limiting frame, and a plurality of clamping mechanisms for limiting the steel columns are provided on one side of the fixed plate frame, each of the clamping mechanisms is composed of two clamps, and a spring body is connected between the two clamps on each clamping mechanism, wherein one end of the clamp slides in a limited position in the fixed plate frame.

[0013] Preferably, a cam is further provided inside the fixed plate frame, and a rotating shaft is fixedly installed on the cam, wherein the end of the rotating shaft passes through the inner walls of the fixed plate frame and the limiting frame in sequence and extends to the outside of the limiting frame, and the rotating shaft is rotatably connected to the inner walls of the fixed plate frame and the limiting frame. A pulley member that contacts the cam is also provided inside the fixed plate frame, and an action plate frame is fixedly installed on the bottom of the pulley member, and the action plate frame is slidably connected to the inner wall of the fixed plate frame.

[0014] Preferably, a buffer spring is connected between the bottom inner wall of the fixed plate frame and the end of the action plate frame, a magnetic plate frame is fixedly installed on each of the clamps, and a plurality of annular magnetic plates are fixedly installed on the side wall of the action plate frame, the magnetic plate frame is located on the movement trajectory of the annular magnetic plate, and the annular magnetic plate generates an attractive force on the magnetic plate frame during the movement of the action plate frame.

[0015] Preferably, a knob is installed at one end of the rotating shaft body located outside the limit frame body and is slidably connected to its outer wall, and a limit rod frame is installed on the knob, a circular sleeve is fixedly installed on the outer wall of the limit frame body, and a slot is provided on the circular sleeve for limiting the limit rod frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention utilizes a detection shaft to detect the truss, thereby effectively avoiding the horizontal deviation of the truss. The end of the detection shaft contacts the bottom of the truss. If there is a tilt, the compression spring will drive the detection shaft to move upward or downward through the moving plate, that is, the touch shaft on the moving plate will contact any sensing element, thereby determining the horizontality of the truss. At the same time, under the action of the force-bearing plate frame, the position of the web can be effectively determined, and the attraction force of the force-applying magnetic plate on the force-bearing magnetic plate can be used to effectively control the position adjustment of the detection frame. Therefore, the structural design of the present invention can effectively avoid the horizontal deviation of the truss.

[0018] The present invention utilizes a clamping mechanism to quickly limit the steel column, which can effectively avoid position deviation or tilt of the steel column during the assembly process. The attractive force of the annular magnetic plate on the magnetic plate frame is utilized to enable the clamp to limit the steel column, thereby avoiding tilt and offset of the steel column during the assembly process, improving the installation efficiency of the portal steel frame structure, and reducing installation errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 Schematic diagram of the limiting frame structure of the present invention;

[0021] Figure 3 Schematic diagram of the portal steel frame structure and the limit frame structure of the present invention;

[0022] Figure 4 This is a schematic structural diagram of the clamping mechanism of the present invention;

[0023] Figure 5 This is a partially cutaway structural diagram of the fixed plate frame of the present invention;

[0024] Figure 6 This is a schematic diagram of the fixed plate frame structure of the present invention;

[0025] Figure 7 For the present invention Figure 2 A magnified schematic diagram of the structure of the area at center A;

[0026] Figure 8 This is a schematic diagram of the truss and detection frame structure of the present invention;

[0027] Figure 9 This is a schematic diagram of the separation of the driving slider and the connecting mechanism structure of the present invention;

[0028] Figure 10 This is a schematic diagram of a partially cutaway structure of the detection sleeve of the present invention;

[0029] Figure 11 This is a schematic cross-sectional view of the local structure of the detection frame of the present invention;

[0030] Figure 12 It is a structural schematic diagram of one side of the detection frame of the present invention.

[0031] In the figure: 1-bench; 1a-steel column; 1b-truss; 1c-web; 2-mounting frame; 3-limiting frame; 31-fixed plate frame; 32-clamping mechanism; 33-clamp; 331-magnetic plate frame; 34-spring body; 35-cam; 36-rotating shaft; 361-knob; 362-limiting rod frame; 37-pulley; 38-action plate frame; 381-annular magnetic plate; 39-buffer spring; 30-circular sleeve; 301-slot; 302-guide shaft; 4-servo motor; 41-reciprocating screw; 42-driving slider; 43-reinforcement frame; 5-detection Frame; 51-detection sleeve; 52-moving plate; 521-touch shaft; 522-extension shaft; 523-slot; 53-detection shaft; 54-compression spring; 55-sensing element; 56-extension frame; 561-force block; 562-extension plate frame; 563-force plate frame; 564-spring member; 565-limiting plate frame; 566-clamping rod frame; 57-connecting shaft; 571-force magnetic plate; 58-sliding groove; 59-rolling ball; 6-connecting mechanism; 61-support plate frame; 62-limiting shaft; 63-reset spring; 64-force magnetic plate. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1-12The present invention provides a technical solution: an operating table for assembling a portal steel frame structure. The present invention makes corresponding improvements to the technical problems in the background technology, including a platform 1, a pair of symmetrically distributed steel columns 1a are installed on the platform 1, and a mounting frame 2 for limiting the installation of the steel columns 1a is symmetrically installed on the platform 1. Further description: the portal steel frame structure includes steel columns 1a, trusses 1b and web members 1c, and a limiting frame 3 is fixedly installed on the platform 1. Furthermore, in order to facilitate the rapid limitation of the steel column 1a, the present invention makes the following design: the limiting frame 3 has two The fixing plate frame 31 is fixedly installed on each side, and a plurality of clamping mechanisms 32 for limiting the steel column 1a are provided on one side of the fixing plate frame 31. As a further limitation in the present invention, each clamping mechanism 32 is composed of two clamps 33, and a spring body 34 is connected between the two clamps 33 on each clamping mechanism 32, wherein one end of the clamp 33 is limited and slides in the fixing plate frame 31, and a magnetic plate frame 331 is also fixedly installed on each clamp 33, wherein a cam 35 is further provided inside the fixing plate frame 31, and a rotating The shaft 36, wherein the end of the rotating shaft 36 sequentially passes through the fixed plate frame 31 and the inner wall of the limiting frame body 3 and extends to the outside of the limiting frame body 3, and the rotating shaft 36 is rotatably connected with the fixed plate frame 31 and the inner wall of the limiting frame body 3. A pulley 37 in contact with the cam 35 is also provided inside the fixed plate frame 31, and an action plate frame 38 is fixedly installed at the bottom of the pulley 37. The action plate frame 38 is slidably connected to the inner wall of the fixed plate frame 31, and a buffer spring 39 is connected between the inner wall of the bottom of the fixed plate frame 31 and the end of the action plate frame 38, and a buffer spring 39 is connected between the inner wall of the bottom of the fixed plate frame 31 and the end of the action plate frame 38, and a buffer spring 39 is connected between the inner wall of the bottom of the fixed plate frame 31 and the end of the action plate frame 38. A plurality of annular magnetic plates 381 are fixedly mounted on the wall, the magnetic plate frame 331 is located on the movement trajectory of the annular magnetic plate 381, and the annular magnetic plate 381 generates an attractive force on the magnetic plate frame 331 during the movement of the plate frame 38. The rotating shaft 36 is located at one end outside the limit frame 3 and is equipped with a knob 361 that is slidably connected to its outer wall, and a limit rod frame 362 is installed on the knob 361. A circular sleeve 30 is fixedly mounted on the outer wall of the limit frame 3, and a slot 301 for limiting the limit rod frame 362 is provided on the circular sleeve 30.

[0034] Furthermore, during the assembly process, the staff first places the steel column 1a in the installation frame 2, and then turns the knob 361. The knob 361 drives the rotating shaft 36 to rotate, that is, the rotating shaft 36 drives the cam 35 to rotate. During the rotation of the cam 35, its protruding part exerts a force on the pulley 37. It should be noted that in the initial state, the protruding part of the cam 35 does not contact the pulley 37, and at this time the distance between the two clamps 33 on each clamping mechanism 32 is at its farthest state. In this state, the steel column 1a can be directly placed on the installation frame 2, and the clamp 33 will not affect the placement of the steel column 1a. When the cam 35 acts on the pulley 37, the pulley 37 drives the action plate frame 38 to slide within the fixed plate frame 31, that is, the descending action. During the descending process, the action plate frame 38 applies a force to the buffer spring 39, and the buffer spring 39 is in a compressed state. At the same time, the annular magnetic plate 381 on the action plate frame 38 moves toward the position of the magnetic plate frame 331. It should be noted that in the initial state, the annular magnetic plate 381 is located above the magnetic plate frame 331. When the action plate frame 38 descends, The annular magnetic plate 381 will move to the corresponding position of the magnetic plate frame 331, and the annular magnetic plate 381 will generate an attractive force on the magnetic plate frame 331, that is, the two clamps 33 on each clamping mechanism 32 approach each other. During the approach process, the spring body 34 between the clamps 33 is in a compressed state, that is, the two clamps 33 approach each other to limit the steel column 1a. In order to ensure the stable performance of the steel column 1a being limited, the staff will connect the two clamps 33 with high-strength bolts after the limit. The above structural design makes it easy for the staff to quickly limit the steel column 1a. It can effectively prevent the steel column 1a from position deviation or tilt during the assembly process. Furthermore, in order to prevent the staff from accidentally touching the rotating shaft 36 and causing it to rotate during the assembly process, the knob 361 can be pushed into the circular sleeve 30 after turning the knob 361, and the limiting rod frame 362 is limited in the slot 301. It is further explained that when the raised part of the cam 35 rotates to the point where a force is applied to the pulley part 37, the limiting rod frame 362 on the knob 361 rotates to the corresponding position of the slot 301, and the staff can directly push the knob 361 into the circular sleeve 30.

[0035] During the installation of the truss 1b, in order to detect whether the truss 1b has a horizontal deviation and to avoid the influence of the web 1c on the detection result during the detection process, the present invention makes the following design: a servo motor 4 is fixedly installed on the outer wall of one side of the limit frame 3, and a reciprocating screw rod 41 is fixedly installed on the output end of the servo motor 4, wherein the reciprocating screw rod 41 is located inside the limit frame 3, and the end of the reciprocating screw rod 41 is rotatably connected to the inner wall of the other side of the limit frame 3; a guide shaft 302 is fixedly connected between the inner walls on both sides of the limit frame 3, and a driving slider 42 is installed on the reciprocating screw rod 41, wherein the driving slider 42 slides on the upper limit of the guide shaft 302, and the top and bottom of the driving slider 42 are fixedly installed with a reinforcing frame 43, and the reinforcing frame 43 is fixedly installed. A detection frame 5 is provided on the side, and the detection frame 5 and the reinforcement frame 43 are connected by a connecting mechanism 6. Further, the connecting mechanism 6 in the present invention includes a support plate frame 61 fixedly connected to the reinforcement frame 43, and a plurality of limit shafts 62 are fixedly installed on the support plate frame 61, and the plurality of limit shafts 62 all pass through the detection frame 5, and the detection frame 5 slides within the limit limit of the limit shaft 62, and a plurality of return springs 63 are connected between the detection frame 5 and the support plate frame 61, and the return springs 63 correspond to the limit shafts 62 one by one, and the outer wall of the limit shaft 62 does not contact the return spring 63, and a detection sleeve 51 is fixedly installed on the detection frame 5, and a movable plate 52 slidably connected to its inner wall is installed inside the detection sleeve 51, and the movable plate 52 is fixedly installed inside the detection sleeve 51. A detection shaft 53 is fixedly installed on one side of the plate body 52, and the end of the detection shaft 53 passes through the inner wall of the top of the detection sleeve 51 and extends to the outside. A compression spring 54 is also connected between the movable plate body 52 and the inner wall of the bottom of the detection sleeve 51. A touch shaft 521 is fixedly installed on the outer wall of the movable plate body 52, wherein a plurality of sensing elements 55 are provided above and below the touch shaft 521. The plurality of sensing elements 55 are all fixedly installed on the inner wall of the detection sleeve 51, and the sensing elements 55 are located on the movement trajectory of the touch shaft 521. An extension frame 56 is installed inside the detection frame 5, and a force-bearing block 561 slidably connected to its inner wall is installed inside the extension frame 56, and an extension plate frame 562 is fixedly installed on one side of the force-bearing block 561. The end portion 62 passes through the inner wall of the extension frame 56 and extends to the outside, and the end portion of the extension plate frame 562 located on the outside is fixedly installed with a force-bearing plate frame 563, wherein a spring member 564 is fixedly connected between the side of the force-bearing block 561 away from the extension plate frame 562 and the extension frame 56. It should be noted that a plurality of rolling balls 59 are installed on one side of the detection frame 5 and the outer wall of the force-bearing plate frame 563, and an extension shaft body 522 is fixedly installed on the side of the movable plate body 52 away from the detection shaft body 53. The end portion of the extension shaft body 522 passes through the inner wall of the detection sleeve 51 and the top of the detection frame 5 in sequence and extends to the inside of the detection frame 5, and a slot 523 is provided near the end portion of the extension shaft body 522. A limiting plate frame 565 is fixedly installed on the top of the force-bearing block body 561.The limiting plate frame 565 passes through the inner wall of the top of the extension frame 56 and extends to the inside of the detection frame 5, and the limiting plate frame 565 is slidably connected to the inner wall of the top of the extension frame 56. A clamping rod frame 566 is fixedly installed on one side of the limiting plate frame 565. The slot 523 is located on the movement trajectory of the clamping rod frame 566. A connecting shaft 57 is fixedly installed on the force plate frame 563, and a force-bearing magnetic plate 571 is fixedly installed on the end of the connecting shaft 57. A sliding groove 58 is provided on the side of the detection frame 5 close to the support plate frame 61. The force-bearing magnetic plate 571 slides in a limited position in the sliding groove 58. A force-applying magnetic plate 64 is fixedly installed on the side of the support plate frame 61 close to the detection frame 5. The force-bearing magnetic plate 571 is subjected to the mutual attraction force of the force-applying magnetic plate 64 during the movement of the connecting shaft 57.

[0036] Specifically, during the flatness detection process of the truss 1b, the servo motor 4 is started, and the output end of the servo motor 4 drives the reciprocating screw 41 to rotate. During the rotation of the reciprocating screw 41, the driving slider 42 thereon performs directional movement under the action of the guide shaft 302. During this process, the driving slider 42 drives the support plate frame 61 to move synchronously through the reinforcing frame 43, and at this time, the limiting shaft 62 on the support plate frame 61 drives the detection frame 5 to move synchronously, and then the end of the detection shaft 53 contacts the bottom of the truss 1b. If there is a tilt condition (tilted upward or tilted downward), the compression spring 54 will drive the detection shaft 53 to move upward or downward through the moving plate 52, that is, the touch shaft 521 on the moving plate 52 is It will contact any of the sensing elements 55. It should be noted that the compression spring 54 is initially in a compressed state, that is, at this time, the touch shaft 521 on the movable plate 52 will not contact any of the sensing elements 55. When detecting whether the truss 1b has a horizontal deviation, the detection shaft 53 will be affected by the web 1c, and then when it is close to the web 1c, the force-bearing plate frame 563 will first contact the web 1c, that is, the force-bearing plate frame 563 drives the force-bearing block 561 to slide within the extension frame 56 through the extension plate frame 562. During the sliding process, the force-bearing block 561 will compress the spring member 564. Accordingly, the limit plate frame 565 on the top of the force-bearing block 561 will drive the clamping rod frame 566 to move synchronously, clamping The rod frame 566 enters the slot 523 on the extension shaft body 522. At this time, the extension shaft body 522 is limited, so that the movement of the movable plate body 52 and the detection shaft body 53 thereon can be effectively limited. When the force-bearing plate frame 563 is forced to move, the connecting shaft body 57 thereon will drive the force-bearing magnetic plate 571 to move synchronously. The force-bearing magnetic plate 571 slides within the sliding groove body 58 and moves to the magnetic track of the force-applying magnetic plate 64. When the force-bearing magnetic plate 571 moves to the corresponding position of the force-applying magnetic plate 64, the force-applying magnetic plate 64 generates an attractive force on the force-bearing magnetic plate 571, that is, the detection frame 5 moves toward the support plate frame 61 under the action of the limiting shaft body 62. During this movement, the detection frame 5 presses the reset spring 63. When the truss 1b is retracted, the other connecting parts on the detection frame 5 (including the detection shaft 53, the force-bearing plate frame 563 and other mechanical parts) leave the bottom of the truss 1b, that is, they will not be hindered by the web 1c. It should be noted that when the force-bearing plate frame 563 moves close to the extension frame 56 (not yet to the extension frame 56), the force-bearing magnetic plate 571 just moves to the force-applying magnetic plate 64. When the web 1c no longer hinders the force-bearing plate frame 563, the outer wall of the detection frame 5 just contacts the outer surface of the web 1c, and the force-bearing plate frame 563 will move to the initial position under the action of the spring member 564. At this time, the reciprocating screw rod 41 also drives the detection frame 5 to cross the web 1c by driving the slider 42, and the detection frame 5 is under the action of the reset spring 63.Returning to the bottom of the truss 1b, the connecting rod 566 will move synchronously with the load-bearing block 561 under the action of the limiting plate 565, that is, the connecting rod 566 will leave the slot 523 on the extension shaft 522. The structural design of the present invention can effectively detect the horizontality of the truss 1b and avoid horizontal deviation.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An operating table for assembling a portal steel frame structure, characterized in that: The invention comprises a platform (1), wherein a pair of symmetrically distributed steel columns (1a) are installed on the platform (1), and a mounting frame (2) for limiting the installation of the steel columns (1a) is symmetrically installed on the platform (1), and a limiting frame (3) is fixedly installed on the platform (1), and a servo motor (4) is fixedly installed on the outer wall of one side of the limiting frame (3), and a reciprocating screw (41) is fixedly installed on the output end of the servo motor (4), wherein the reciprocating screw (41) is located inside the limiting frame (3), and the end of the reciprocating screw (41) is rotatably connected to the inner wall of the other side of the limiting frame (3); A guide shaft (302) is fixedly connected between the inner walls on both sides of the limit frame (3), and a driving slider (42) is installed on the reciprocating screw (41), wherein the driving slider (42) slides on the guide shaft (302) at the upper limit position, and a reinforcement frame (43) is fixedly installed on the top and bottom of the driving slider (42), and a detection frame (5) is provided on one side of the reinforcement frame (43), and a connecting mechanism (6) is connected between the detection frame (5) and the reinforcement frame (43), and a detection sleeve (51) is fixedly installed on the detection frame (5), and a movable plate body slidably connected to the inner wall of the detection sleeve (51) is installed inside the detection sleeve (51). (52), and a detection shaft (53) is fixedly installed on one side of the movable plate (52), the end of the detection shaft (53) passes through the inner wall of the top of the detection sleeve (51) and extends to the outside, and a compression spring (54) is also connected between the movable plate (52) and the inner wall of the bottom of the detection sleeve (51), and a touch shaft (521) is fixedly installed on the outer wall of the movable plate (52), wherein a plurality of sensing elements (55) are provided above and below the touch shaft (521), and the plurality of sensing elements (55) are fixedly installed on the inner wall of the detection sleeve (51), and the sensing elements (55) are located on the motion trajectory of the touch shaft (521); The connecting mechanism (6) includes a support plate frame (61) fixedly connected to the reinforcing frame (43), and a plurality of limit shafts (62) are fixedly installed on the support plate frame (61), the plurality of limit shafts (62) all pass through the detection frame (5), and the detection frame (5) slides within the limit position on the limit shaft (62), and a plurality of return springs (63) are connected between the detection frame (5) and the support plate frame (61), the return springs (63) correspond to the limit shafts (62) one by one, and the outer wall of the limit shaft (62) does not contact the return springs (63); An extension frame (56) is installed inside the detection frame (5), and a force-bearing block (561) is installed inside the extension frame (56) and is slidably connected to the inner wall thereof, and an extension plate frame (562) is fixedly installed on one side of the force-bearing block (561), and an end of the extension plate frame (562) passes through the inner wall of the extension frame (56) and extends to the outside, and a force-bearing plate frame (563) is fixedly installed on the end of the extension plate frame (562) located on the outside, wherein a spring member (564) is fixedly connected between the side of the force-bearing block (561) away from the extension plate frame (562) and the extension frame (56); An extension shaft (522) is fixedly mounted on one side of the movable plate (52) away from the detection shaft (53), and the end of the extension shaft (522) sequentially penetrates the inner wall of the detection sleeve (51) and the top of the detection frame (5) and extends into the interior of the detection frame (5), and a slot (523) is provided near the end of the extension shaft (522), and a limiting plate frame (565) is fixedly mounted on the top of the force-bearing block (561), and the limiting plate frame (565) penetrates the inner wall of the top of the extension frame (56) and extends into the interior of the detection frame (5), and the limiting plate frame (565) is slidably connected to the inner wall of the top of the extension frame (56), and a clamping rod frame (566) is fixedly mounted on one side of the limiting plate frame (565), and the slot (523) is located on the motion trajectory of the clamping rod frame (566); A connecting shaft (57) is fixedly mounted on the force-bearing plate frame (563), and a force-bearing magnetic plate (571) is fixedly mounted on the end of the connecting shaft (57), wherein a sliding groove (58) is provided on the side of the detection frame (5) close to the support plate frame (61), and the force-bearing magnetic plate (571) slides within the sliding groove (58) in a limited manner, and a force-applying magnetic plate (64) is fixedly mounted on the side of the support plate frame (61) close to the detection frame (5), and the force-bearing magnetic plate (571) is subjected to an attractive force from the force-applying magnetic plate (64) during the movement of the connecting shaft (57); Fixed plate frames (31) are fixedly installed on both sides of the limiting frame (3), and a plurality of clamping mechanisms (32) for limiting the steel column (1a) are provided on one side of the fixing plate frame (31), each of the clamping mechanisms (32) is composed of two clamps (33), and a spring body (34) is connected between the two clamps (33) on each clamping mechanism (32), wherein one end of the clamp (33) is limitedly slidable in the fixing plate frame (31); A cam (35) is further provided inside the fixed plate frame (31), and a rotating shaft (36) is fixedly installed on the cam (35), wherein the end of the rotating shaft (36) sequentially passes through the fixed plate frame (31) and the inner wall of the limiting frame (3) and extends to the outside of the limiting frame (3), and the rotating shaft (36) is rotatably connected to the inner wall of the fixed plate frame (31) and the limiting frame (3), and a pulley (37) in contact with the cam (35) is further provided inside the fixed plate frame (31), and an action plate frame (38) is fixedly installed at the bottom of the pulley frame (37), and the action plate frame (38) is slidably connected to the inner wall of the fixed plate frame (31); A buffer spring (39) is connected between the bottom inner wall of the fixed plate frame (31) and the end of the action plate frame (38). A magnetic plate frame (331) is fixedly mounted on each of the clamps (33), and a plurality of annular magnetic plates (381) are fixedly mounted on the side wall of the action plate frame (38). The magnetic plate frame (331) is located on the movement trajectory of the annular magnetic plate (381), and the annular magnetic plate (381) generates an attractive force on the magnetic plate frame (331) during the movement of the action plate frame (38).

2. The operating table for assembling a portal steel frame structure according to claim 1, characterized in that: A plurality of rolling balls (59) are installed on one side of the detection frame (5) and the outer wall of the force-bearing plate frame (563).

3. The operating table for assembling a portal steel frame structure according to claim 1, characterized in that: One end of the rotating shaft (36) located outside the limiting frame (3) is provided with a knob (361) slidably connected to the outer wall thereof, and a limiting rod frame (362) is installed on the knob (361). A circular sleeve (30) is fixedly installed on the outer wall of the limiting frame (3), and a slot (301) for limiting the limiting rod frame (362) is provided on the circular sleeve (30).

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