A cold-bent section steel conveying trolley and a method of using the same

Abstract

The present application belongs to the technical field of profile conveying equipment, and discloses a cold-bent profile conveying trolley and a use method thereof. The trolley comprises a trolley body and a receiving assembly. The receiving assembly is provided with a floating supporting roller, a positioning driving roller, a negative pressure adsorption assembly, a pressing assembly, a side pushing assembly, a driving assembly, a clutch assembly and a load triggering assembly. The side pushing assembly makes the profile abut against the friction roller, and the driving motor drives the friction roller to rotate at a positioning rotating speed, so that the profile moves to a predetermined position in a rolling receiving state. When the pressing assembly continues to press the profile downward, the profile drives the floating supporting roller to move downward and triggers the load triggering assembly, so that the rotating shaft is disconnected from the friction roller, and the profile is attached to the adsorption surface. The driving motor then drives the suction impeller to establish negative pressure at a high suction rotating speed, and the adsorption state is maintained through the on-off valve. The present application enables the cold-bent profile to continuously complete rolling positioning, transmission disconnection, negative pressure fixation and trolley transfer at the same receiving position, without the need for re-hoisting or secondary clamping.

Description

Technical Field

[0001] This invention belongs to the technical field of profile conveying equipment, specifically relating to a cold-bent profile conveying trolley and its usage method. Background Technology

[0002] After the cold-formed profiles have completed the bending process, they need to be transferred between the cold bending station and the inspection, welding, or assembly stations. Existing profile conveying equipment typically uses conveyor rollers to support the profiles and guide wheels, pressure rollers, or clamps to restrict the profiles' position. For larger profiles or profiles with a high degree of bending, hoisting or clamping handling equipment is also used to complete the station transfer.

[0003] Cold-formed profiles are curved along their length, and the direction of extension and stress varies at different joint locations. When using rollers for support, the profile can easily move along the joint surface, facilitating position adjustment. However, it is prone to further slippage during trolley startup, shutdown, and turning. Rigid clamping keeps the profile fixed, but the clamped state hinders adjustment along the curved extension direction. In actual transport, it is often necessary to first loosen the clamps to adjust the profile, then re-clamp or re-lift it. The profile's adjusted position and its fixed position during transport are separated, resulting in poor continuity of operation. Furthermore, changes in the profile's center of gravity can easily lead to mismatched joint positions and unstable transport posture.

[0004] Therefore, a cold-bent steel profile conveying trolley is needed to enable the profiles to be adjusted with low resistance at the same receiving position and then directly converted to a fixed transport state after the adjustment is completed. Summary of the Invention

[0005] The purpose of this invention is to provide a cold-bent steel profile conveying trolley and its usage method, so that cold-bent profiles can sequentially complete rolling acceptance, friction drive adjustment, load trigger release transmission, negative pressure fixing and trolley transfer on the same set of receiving components.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cold-bent steel section conveying trolley includes a trolley body and two receiving assemblies spaced apart on the trolley body. Each receiving assembly includes a mounting base, on which are mounted a floating support roller, a positioning drive roller, a negative pressure adsorption assembly, a pressing assembly, a side-pushing assembly, a drive assembly, a clutch assembly, and a load triggering assembly. The floating support roller is vertically slidable on the mounting base and supported by a reset elastic element. The adsorption surface of the negative pressure adsorption assembly is lower than the supporting surface of the floating support roller when it is in its initial position.

[0008] The positioning drive roller includes a rotating shaft and a friction roller sleeved on the outside of the rotating shaft. A clutch assembly is located between the rotating shaft and the friction roller. A side-pushing assembly pushes the profile towards the friction roller. The drive assembly includes a drive motor and a suction impeller. The drive motor is connected to both the rotating shaft and the suction impeller. The suction impeller is located inside a hood that communicates with the negative pressure adsorption assembly.

[0009] The triggering part of the load triggering assembly is located on the path of the profile as it moves downward with the floating support roller. The load triggering assembly is connected to the clutch assembly. When the holding assembly presses the profile, the profile drives the floating support roller to move downward and press against the triggering part, causing the rotating shaft to disengage from the friction roller and the profile to come into contact with the adsorption surface of the negative pressure adsorption assembly.

[0010] The pressing assembly includes a first telescopic member and a first ball bearing rotatably mounted on the telescopic end of the first telescopic member. The side-pushing assembly includes a second telescopic member and a second ball bearing rotatably mounted on the telescopic end of the second telescopic member. The extension directions of the two second telescopic members are both toward the area between the two positioning drive rollers.

[0011] The drive assembly also includes a drive shaft connected to the output end of the drive motor, a suction impeller and a driving gear fixedly mounted on the drive shaft, and a driven gear meshing with the driving gear fixedly mounted on the rotating shaft. The friction roller is rotatably mounted on the rotating shaft, and limiting rings are provided at both ends of the friction roller on the rotating shaft. The outer circumferential surface of the friction roller is provided with a friction-enhancing roughening structure.

[0012] The rotating shaft has an axially extending air pressure chamber. An installation groove, connected to the air pressure chamber via a connecting port, is formed on the outer circumference of the rotating shaft. A locking block is slidably and sealed within the installation groove, and a first elastic element is provided between the locking block and the bottom wall of the installation groove. A transmission ring is provided on the inner circumference of the friction roller, and a locking groove is formed on the transmission ring to mate with the locking block. When the locking block extends into the locking groove, the rotating shaft and the friction roller are connected by transmission; when the locking block retracts from the locking groove, the rotating shaft and the friction roller are disengaged.

[0013] The load triggering assembly includes a trigger seat, a trigger push rod, a piston plate, a second elastic element, a fixed sleeve, a sealing piston rod, a third elastic element, and a connecting pipe. The trigger seat has a pressure transmission chamber, and the piston plate is slidably and sealingly disposed within the pressure transmission chamber. The trigger push rod connects to the piston plate and extends out of the trigger seat, with the extended end of the trigger push rod forming the trigger section.

[0014] The sealing piston rod includes a first vertical section, a second vertical section, and a transverse connecting section connecting the first and second vertical sections. The first vertical section is slidably and sealingly disposed within a fixed sleeve, while the second vertical section is slidably and sealingly disposed within a pressure chamber via a rotary reciprocating sealing structure. The fixed sleeve is connected to the pressure transmission chamber via a connecting pipe, and a third elastic element is disposed within the fixed sleeve and connects the fixed sleeve and the first vertical section. When the trigger push rod is compressed, the piston plate drives the first vertical section downward through hydraulic medium, and the first vertical section drives the second vertical section to move downward synchronously through the transverse connecting section, thereby increasing the volume of the pressure chamber; after the trigger push rod is released from pressure, the third elastic element drives the sealing piston rod to reset.

[0015] The floating support roller includes a rolling roller, two support arms that support both ends of the rolling roller, a guide rod fixedly mounted on the mounting base, and a guide plate connected to the support arms. The guide plate is slidably sleeved on the guide rod. The mounting base has a relief groove corresponding to the support arm, and a reset elastic element is set in the relief groove and connects the mounting base and the support arm.

[0016] The negative pressure adsorption assembly includes an adsorption plate, adsorption holes, an adsorption chamber, and a hollow connecting shaft. The adsorption plate has an adsorption surface on its side facing the profile, with multiple adsorption holes formed on this surface. The adsorption chamber is located within the adsorption plate and communicates with the adsorption holes. The hollow connecting shaft is located on the side of the adsorption plate away from the adsorption surface and communicates with the adsorption chamber. A central air chamber is located within the mounting base, and the hollow connecting shaft communicates with this central air chamber. The air inlet of the fan hood is connected to the central air chamber via a suction pipe equipped with an on / off valve. A flexible sealing ring surrounds the multiple adsorption holes on the outer edge of the adsorption surface.

[0017] In one embodiment, the hollow connecting shaft is fixedly mounted on the mounting base, keeping the adsorption plate fixed relative to the mounting base. In another embodiment, the mounting base is provided with a floating support structure, which includes a floating support seat. The floating support seat has an annular receiving cavity and a top opening communicating with the annular receiving cavity, through which the hollow connecting shaft moves. A floating ring plate located within the annular receiving cavity is fixedly sleeved on the outer periphery of the hollow connecting shaft. The outer diameter of the floating ring plate is larger than the diameter of the top opening but smaller than the diameter of the annular receiving cavity. Multiple buffer elastic elements are provided between the floating ring plate and the circumferential inner wall of the annular receiving cavity. The mounting base has an annular communication port communicating with an intermediate air cavity, covering the horizontal movement trajectory of the lower end of the hollow connecting shaft. A flexible sealing sleeve is provided between the top opening and the hollow connecting shaft, and an annular sealing gasket is provided between the floating support seat and the mounting base. The flexible sealing sleeve, the circumferential wall of the floating support seat, and the annular sealing gasket form a closed transition air cavity communicating with the hollow connecting shaft and the annular communication port.

[0018] The trolley body includes a bottom frame, a transverse movable frame slidably mounted on the bottom frame along a first horizontal direction, a movable seat slidably mounted on the transverse movable frame along a second horizontal direction, and a rotary bearing beam rotatably mounted on the movable seat about a vertical axis. Two receiving bases are slidably mounted on the rotary bearing beam and can move towards or away from each other, with mounting seats mounted on the corresponding receiving bases.

[0019] The profile can be an H-beam or I-beam with a web and flanges located on both sides of the web. The web is arranged in a horizontal direction, and the lower edges of the two flanges are supported by floating support rollers. The friction rollers abut against the outer surface of the flanges located on the outer arc side of the profile. The adsorption surface of the negative pressure adsorption assembly is arranged opposite to the lower surface of the web. The trigger part is located on the downward movement path of the web, and the initial height of the trigger part is higher than the support surface of the floating support rollers.

[0020] This invention also provides a method for using a cold-bent steel profile conveying trolley, comprising: placing the profile on floating support rollers of two receiving components, and pushing the profile against the friction roller of the positioning drive roller through a side push component; with the rotating shaft and the friction roller in a transmission connection, driving the friction roller to rotate through a drive motor, so that the two friction rollers together move the profile to a predetermined position; pressing the profile through a holding component, so that the profile moves the floating support roller down and presses against the trigger part of the load trigger component; controlling the clutch component through the load trigger component to release the transmission connection between the rotating shaft and the friction roller, and making the profile fit against the adsorption surface of the negative pressure adsorption component; driving the suction impeller to rotate through a drive motor to evacuate the negative pressure adsorption component, so that the negative pressure adsorption component adsorbs the profile; after the negative pressure adsorption component establishes negative pressure, closing the opening and closing valve set on the suction pipe, and the trolley body drives the profile to be transported.

[0021] The beneficial effects of this invention are as follows: 1. This invention maintains rolling contact between the profile and the floating support roller, the first ball bearing, and the second ball bearing. The friction roller drives the arc-shaped profile to move along its extension direction. After the profile reaches the predetermined position, the holding component continues to press down, causing the profile to directly adhere to the negative pressure adsorption component at its original receiving position. Thus, the profile does not need to leave the receiving component, nor does it need to undergo loosening, lifting, repositioning, and re-clamping. It can directly transition from a low-resistance adjustment state to a stable transport state, resolving the contradiction that arc-shaped profiles are "easy to move but difficult to fix, and difficult to adjust after clamping."

[0022] 2. This invention simultaneously presses the floating support roller and the load triggering component as the profile moves downward. The load triggering component drives the clutch component to disengage according to the actual downward stroke of the profile, causing the friction roller to exit the transmission before the profile is adhered and adsorbed. Subsequently, the same drive motor increases from the positioning speed to the suction speed, driving the suction impeller to establish negative pressure. The positioning drive stop, profile adhesion, and negative pressure fixation occur sequentially according to the mechanical stroke, without relying on manual judgment of the switching timing, and at the same time, it avoids the friction roller continuing to drive at high speed after the profile has been pressed.

[0023] 3. This invention uses a drive motor to drive the friction rollers in the previous stage to adjust the profile position. After the clutch assembly disengages, it continues to drive the suction impeller to establish negative pressure. Once negative pressure is established, the air path is cut off by the on / off valve, maintaining the adsorption state. A single power source can continuously complete the adjustment and adsorption fixation, allowing two originally independent operation stages to be completed sequentially in the same receiving assembly. Furthermore, the side-push assembly retracts from the side of the profile after negative pressure is established, reducing the restriction on the surface of the curved profile caused by continuous rigid clamping during transfer.

[0024] 4. This invention, after the profile completes negative pressure adsorption, allows the adsorption plate to drive the floating ring plate to slide horizontally within the annular cavity via the hollow connecting shaft. When the profile is subjected to collision or instantaneous horizontal load during transport, the sliding friction between the floating ring plate and the bottom wall of the annular cavity absorbs part of the impact energy. The buffer elastic elements on both sides of the displacement direction undergo compression and tension deformation, respectively, preventing the horizontal load from being directly and rigidly transmitted to the mounting base and the trolley body. The annular connecting port covers the movement trajectory of the hollow connecting shaft, ensuring that the negative pressure air passage remains open during the horizontal displacement of the adsorption plate. After the external load is released, the buffer elastic elements drive the floating ring plate and the adsorption plate to reset, thus maintaining the profile adsorption state while completing the horizontal buffering of transport collisions. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the steel conveying trolley after cold bending, which carries the steel profiles according to the present invention.

[0026] Figure 2 This is a schematic diagram of the structure of the receiving component of the present invention;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a structural schematic diagram of the receiving component of the present invention from another perspective;

[0029] Figure 5 This is a top view of the mounting base of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the floating support roller of the present invention;

[0031] Figure 7 This is a cross-sectional schematic diagram of the negative pressure adsorption component and floating support structure of the present invention;

[0032] Figure 8 This is a schematic diagram of the connection structure between the positioning drive roller and the drive assembly of the present invention;

[0033] Figure 9 This is a schematic cross-sectional view of the clutch assembly of the present invention;

[0034] Figure 10 This is an exploded structural diagram of the trigger seat, trigger push rod, piston plate and second elastic element of the present invention;

[0035] Figure 11 This is a schematic diagram of the connection structure between the load triggering component and the positioning drive roller of the present invention;

[0036] Figure 12 This is a schematic diagram of the structure of the fixed sleeve, sealing piston rod and third elastic element of the present invention;

[0037] Figure 13 This is a schematic diagram of the structure of the trolley body of the present invention;

[0038] Figure 14 This is a schematic diagram of the structure of the profile of the present invention.

[0039] In the diagram: 1. Trolley body; 2. Supporting assembly; 4. Profile; 11. Bottom frame; 12. Lateral movable frame; 13. Movable seat; 14. Rotary bearing beam; 15. Support base; 21. Mounting seat; 22. Floating support roller; 23. Positioning drive roller; 24. Negative pressure adsorption assembly; 25. Floating support structure; 26. Pressing assembly; 27. Side push assembly; 28. Drive assembly; 29. ​​Clutch assembly; 30. Load triggering assembly; 41. Web plate; 42. Flange; 221. Rolling roller; 222. Support arm; 223. Guide rod; 224. Guide plate; 225. Reset elastic element; 226. Relief groove; 231. Rotating shaft; 232. Friction roller; 233. Limiting ring; 234. Driven gear; 241. Adsorption plate; 242. Adsorption hole; 243. Adsorption cavity; 244. Hollow connecting shaft; 245. Intermediate 246. Air chamber; 247. Suction pipe; 248. On / off valve; 251. Floating support; 252. Annular receiving cavity; 253. Top opening; 254. Floating ring plate; 255. Buffer elastic element; 256. Annular connecting port; 261. First telescopic element; 262. First ball bearing; 271. Second telescopic element; 272. Second ball bearing; 281. Drive motor; 282. Transmission shaft; 283. Suction impeller; 28 4. Fan cover; 285. Drive gear; 291. Air pressure chamber; 292. Mounting slot; 293. Locking block; 294. First elastic element; 295. Transmission ring; 296. Locking slot; 297. Connecting port; 301. Trigger seat; 302. Trigger push rod; 303. Piston plate; 304. Second elastic element; 305. Fixing sleeve; 306. Sealing piston rod; 307. Third elastic element; 308. Connecting pipe. Detailed Implementation

[0040] The following is combined with Figures 1 to 14 The present invention will be described in detail below. The same reference numerals in the accompanying drawings denote the same or corresponding structures. Vertical refers to the direction perpendicular to the bearing plane of the bottom frame 11 when the cold-bent steel conveying trolley is normally placed. Both the first horizontal direction and the second horizontal direction are parallel to the bearing plane of the bottom frame 11, and the first horizontal direction and the second horizontal direction are perpendicular to each other.

[0041] Example 1

[0042] Reference Figure 1 The cold-bent steel conveying trolley includes a trolley body 1 and two receiving components 2 arranged at intervals on the trolley body 1. The trolley body 1 includes a bottom frame 11, a transverse movable frame 12, a movable seat 13, a slewing bearing beam 14, and two receiving bases 15.

[0043] The bottom frame 11 is constructed of load-bearing profiles connected longitudinally and transversely. A first linear guide rail extending along a first horizontal direction is mounted on the bottom frame 11. The transverse movable frame 12 is mounted on the first linear guide rail via a slider. A first linear drive mechanism connected to the transverse movable frame 12 is mounted on the bottom frame 11. The first linear drive mechanism drives the transverse movable frame 12 to move along the first horizontal direction.

[0044] A second linear guide rail extending along a second horizontal direction is mounted on the transverse movable frame 12, and the movable seat 13 is mounted on the second linear guide rail via a slider. A second linear drive mechanism connected to the movable seat 13 is mounted on the transverse movable frame 12, and the second linear drive mechanism drives the movable seat 13 to move along the second horizontal direction. Both the first and second linear drive mechanisms can be screw-nut mechanisms driven by a motor, or they can be rack and pinion mechanisms or hydraulic linear drive mechanisms.

[0045] A slewing bearing is installed in the middle of the movable seat 13. The slewing bearing beam 14 is fixedly connected to the rotating part of the slewing bearing. A slewing drive mechanism, which is connected to the slewing bearing, is installed on the movable seat 13, enabling the slewing bearing beam 14 to rotate around the vertical axis. The slewing drive mechanism can be formed by combining a motor and a gear pair. A drive gear is installed at the output end of the motor, and a gear ring that meshes with the drive gear is provided on the outer circumference of the slewing bearing.

[0046] Two receiving bases 15 are spaced apart and mounted on the rotary bearing beam 14. Adjustable guide rails are provided on the rotary bearing beam 14 along its extension direction. The two receiving bases 15 are slidably mounted on the adjustable guide rails, allowing them to move towards each other or away from each other. Locking devices are provided between the receiving bases 15 and the rotary bearing beam 14. After the two receiving bases 15 are adjusted to a distance corresponding to the length, curvature, and receiving position of the profile 4, the locking devices restrict further movement of the receiving bases 15.

[0047] Each receiving component 2 includes a mounting base 21. The mounting base 21 is mounted on a corresponding receiving base 15, and the mounting base 21 and the receiving base 15 are connected by an adjustable sliding connection. The receiving base 15 is provided with an adjustment rail arranged perpendicular to the extension direction of the slewing bearing beam 14. The mounting base 21 is slidably mounted on the adjustment rail. After the mounting base 21 is moved to a predetermined position, it is fixed by locking bolts or clamping blocks.

[0048] The two receiving components 2 have the same structure. The mounting base 21 is equipped with a floating support roller 22, a positioning drive roller 23, a negative pressure adsorption component 24, a holding component 26, a side push component 27, a drive component 28, a clutch component 29, and a load triggering component 30.

[0049] Reference Figures 2 to 5The holding assembly 26 includes a first telescopic member 261 and a first ball bearing 262. The first telescopic member 261 is vertically mounted above the mounting base 21, and the first ball bearing 262 is rotatably mounted on the telescopic end of the first telescopic member 261 via a ball seat. A limiting portion surrounding a portion of the spherical surface of the first ball bearing 262 is provided at the end of the ball seat, allowing the first ball bearing 262 to rotate within the ball seat and be held at the end of the ball seat. The first telescopic member 261 can be an electric push rod, or it can be a hydraulic cylinder or a pneumatic cylinder.

[0050] The side-pushing assembly 27 includes a second telescopic member 271 and a second ball bearing 272. The second telescopic member 271 is mounted horizontally on the mounting base 21, and the second ball bearing 272 is rotatably mounted on the telescopic end of the second telescopic member 271 via a ball seat. Both second telescopic members 271 in the receiving assemblies 2 extend towards the area between the two positioning drive rollers 23, causing the two second ball bearings 272 to push the profile 4 closer to the corresponding positioning drive roller 23 from the inner arc side of the profile 4.

[0051] Reference Figure 5 and Figure 6 The floating support roller 22 includes a rolling roller 221, two support arms 222, a guide rod 223, a guide plate 224, a reset elastic element 225, and a relief groove 226.

[0052] The rolling roller 221 extends horizontally, and its two ends are rotatably mounted on two support arms 222 via bearings. The mounting base 21 has two relief grooves 226 corresponding to the support arms 222. The two support arms 222 pass through the corresponding relief grooves 226 and can move up and down along the relief grooves 226.

[0053] Guide rod 223 is fixedly mounted on mounting base 21, guide plate 224 is fixedly connected to two support arms 222, and guide plate 224 is slidably sleeved on guide rod 223. Sliding bushing is installed between guide plate 224 and guide rod 223, and the extension direction of guide rod 223 is consistent with the movement direction of support arm 222.

[0054] A reset elastic element 225 is installed within a relief groove 226. One end of the reset elastic element 225 is connected to the mounting base 21, and the other end is connected to the support arm 222. When the rolling roller 221 is subjected to a downward load, the two support arms 222 move downward along the relief groove 226, the guide plate 224 moves synchronously along the guide rod 223, and the reset elastic element 225 undergoes elastic deformation. After the downward load is released, the reset elastic element 225 drives the support arm 222 and the rolling roller 221 to move upward.

[0055] Reference Figure 8 and Figure 9 The positioning drive roller 23 includes a rotating shaft 231, a friction roller 232, two limit rings 233 and a driven gear 234.

[0056] A rotating shaft 231 is arranged vertically and rotatably mounted on a mounting base 21 via bearings. The lower end of the rotating shaft 231 extends below the mounting base 21, and a driven gear 234 is fixedly fitted onto the lower end of the rotating shaft 231. Two limiting rings 233 are fixedly spaced along the axial direction of the rotating shaft 231, and a friction roller 232 is rotatably sleeved on the outside of the rotating shaft 231, located between the two limiting rings 233. The outer circumferential surface of the friction roller 232 is provided with a friction-enhancing and roughening structure. In this embodiment, the friction-enhancing and roughening structure is a wear-resistant rubber layer fixedly fitted onto the outside of the friction roller 232.

[0057] The drive assembly 28 is mounted below the mounting base 21. The drive assembly 28 includes a drive motor 281, a drive shaft 282, a suction impeller 283, a fan shroud 284, and a drive gear 285. The drive shaft 282 is connected to the output end of the drive motor 281. The suction impeller 283 and the drive gear 285 are both fixedly mounted on the drive shaft 282. The drive gear 285 meshes with the driven gear 234.

[0058] The shroud 284 is fixedly installed below the mounting base 21 and surrounds the suction impeller 283. The shroud 284 has an air inlet and an exhaust end. After the drive motor 281 is started, the transmission shaft 282 simultaneously drives the drive gear 285 and the suction impeller 283 to rotate. The drive gear 285 drives the rotating shaft 231 to rotate via the driven gear 234.

[0059] The drive motor 281 has a positioning operation mode and a suction operation mode. The positioning speed in the positioning operation mode is lower than the suction speed in the suction operation mode. The positioning speed corresponds to the stage when the friction roller 232 drives the profile 4 to adjust its position, and the suction speed corresponds to the stage when the suction impeller 283 evacuates the negative pressure adsorption component 24.

[0060] The clutch assembly 29 is disposed between the rotating shaft 231 and the friction roller 232. A pneumatic chamber 291 is formed inside the rotating shaft 231, extending axially and penetrating the lower end of the rotating shaft 231. Multiple mounting grooves 292 are formed at intervals along the circumferential direction on the outer periphery of the rotating shaft 231, and the inner end of each mounting groove 292 is connected to the pneumatic chamber 291 through a connecting port 297.

[0061] Each mounting groove 292 is equipped with a sealed sliding locking block 293. An annular sealing groove is formed on the outer periphery of the locking block 293, and a sealing ring is installed within the annular sealing groove, slidingly fitting against the inner wall of the mounting groove 292. A first elastic element 294, which is a compression spring, is installed between the locking block 293 and the bottom wall of the mounting groove 292, pushing the locking block 293 towards the friction roller 232.

[0062] A transmission ring 295 is fixedly installed on the inner circumference of the friction roller 232. Multiple locking grooves 296 are formed on the inner circumference of the transmission ring 295 along the circumferential direction. The locking grooves 296 are correspondingly arranged with locking blocks 293. The outer end of the locking block 293 forms a first guide slope, and the entrance edge of the locking groove 296 forms a second guide slope that cooperates with the first guide slope.

[0063] An annular assembly gap is maintained between the friction roller 232 and the rotating shaft 231, and the annular assembly gap is connected to the outside through the assembly gaps at both ends of the friction roller 232. The end of the locking block 293 facing the transmission ring 295 is in an environment close to the external air pressure, and the end of the locking block 293 facing the bottom wall of the mounting groove 292 is connected to the air pressure chamber 291 through the communication port 297.

[0064] When no negative pressure is formed in the air pressure chamber 291, the first elastic element 294 pushes the locking block 293 to extend outward. When the locking block 293 is circumferentially aligned with the locking groove 296, the locking block 293 enters the locking groove 296, and a transmission connection is formed between the rotating shaft 231 and the friction roller 232.

[0065] When a negative pressure is formed in the air pressure chamber 291, a pressure difference is formed at both ends of the locking block 293. The pressure difference drives the locking block 293 to move into the mounting groove 292 and compress the first elastic element 294, causing the locking block 293 to exit the locking groove 296, and the transmission connection between the rotating shaft 231 and the friction roller 232 is released.

[0066] After the negative pressure in the air chamber 291 is released, the first elastic element 294 pushes the locking block 293 to move outward again. When the locking block 293 is not circumferentially aligned with the locking groove 296, the first guide slope of the locking block 293 abuts against the inner circumferential surface of the transmission ring 295. After the rotating shaft 231 rotates again, the locking block 293 rotates relative to the transmission ring 295 with the rotating shaft 231. When the locking block 293 moves to the entrance of the locking groove 296, the first guide slope contacts the second guide slope, and the first elastic element 294 pushes the locking block 293 into the locking groove 296.

[0067] Reference Figure 8 and Figure 10 The load triggering assembly 30 includes a trigger seat 301, a trigger push rod 302, a piston plate 303, a second elastic element 304, a fixed sleeve 305, a sealing piston rod 306, a third elastic element 307, and a connecting pipe 308.

[0068] The trigger seat 301 is fixedly mounted on the mounting base 21, and a pressure transmission chamber is formed inside the trigger seat 301. The piston plate 303 is slidably mounted inside the pressure transmission chamber, and a piston sealing ring is installed on the outer periphery of the piston plate 303 to slide against the inner wall of the pressure transmission chamber. The lower end of the trigger push rod 302 is fixedly connected to the piston plate 303, and the upper end of the trigger push rod 302 passes through the trigger seat 301 and forms a trigger part located outside the trigger seat 301.

[0069] The second elastic element 304 is installed between the piston plate 303 and the trigger seat 301. In this embodiment, the second elastic element 304 is located below the piston plate 303, and the second elastic element 304 is compressed when the piston plate 303 moves downward.

[0070] Hydraulic medium is filled into the space below the piston plate 303, which is located in the pressure transmission chamber. One end of the connecting pipe 308 is connected to the lower part of the pressure transmission chamber, and the other end is connected to the fixed sleeve 305. A liquid injection and venting port communicating with the pressure transmission chamber is opened on the trigger seat 301. After the hydraulic medium is injected into the pressure transmission chamber, the connecting pipe 308, and the fixed sleeve 305, the internal gas is discharged through the liquid injection and venting port, and then the liquid injection and venting port is sealed by the sealing plug. The connection points between the connecting pipe 308 and the trigger seat 301 and the fixed sleeve 305 are all connected by sealed pipe joints.

[0071] The sealing piston rod 306 is a one-piece bent rod. The sealing piston rod 306 includes a first vertical section, a second vertical section arranged at intervals, and a transverse connecting section connecting the first vertical section and the second vertical section.

[0072] The first vertical section is slidably installed inside the fixed sleeve 305. The upper end of the first vertical section and the inner wall of the fixed sleeve 305 form a hydraulic drive space, and the connecting pipe 308 is connected to the hydraulic drive space. A sliding sealing ring is provided on the outer periphery of the first vertical section, and the sliding sealing ring fits against the inner wall of the fixed sleeve 305.

[0073] The third elastic element 307 is installed inside the fixed sleeve 305. The upper end of the third elastic element 307 is connected to the upper part of the fixed sleeve 305, and the lower end of the third elastic element 307 is connected to the upper part of the first vertical section. When the first vertical section moves downward, the third elastic element 307 is stretched; after the hydraulic driving force is released, the third elastic element 307 drives the first vertical section to move upward.

[0074] The second vertical section extends into the pneumatic chamber 291 from the lower end of the rotating shaft 231. A rotary reciprocating sealing sleeve is fixedly installed at the lower end of the rotating shaft 231. The rotary reciprocating sealing sleeve rotates synchronously with the rotating shaft 231. The second vertical section passes through the rotary reciprocating sealing sleeve and remains in a non-rotating state.

[0075] The rotary reciprocating sealing sleeve includes a guide bushing, a rotary reciprocating sealing ring, and a clamping sleeve. The guide bushing is fixedly connected to the rotating shaft 231 and is fitted onto the outside of the second vertical section to limit radial sway of the second vertical section. The rotary reciprocating sealing ring is installed on the inner circumference of the guide bushing and seals against the outer circumference of the second vertical section. The clamping sleeve is installed at the lower end of the rotating shaft 231 and prevents the guide bushing and the rotary reciprocating sealing ring from axially disengaging.

[0076] When the rotating shaft 231 rotates, the reciprocating sealing sleeve rotates circumferentially relative to the second vertical section; when the sealing piston rod 306 moves up and down, the second vertical section slides axially relative to the reciprocating sealing sleeve. The reciprocating sealing ring is a polytetrafluoroethylene (PTFE) composite sealing ring, and an elastic sealing ring is set on the outside of the PTFE composite sealing ring. The elastic sealing ring applies a radial preload to the PTFE composite sealing ring.

[0077] When the first vertical segment moves downward, it drives the second vertical segment to move downward synchronously via the horizontal connecting segment. After the second vertical segment moves downward, the volume of the pressure chamber 291 increases. When the first vertical segment moves upward, the second vertical segment moves upward synchronously, and the pressure chamber 291 returns to its initial volume.

[0078] Reference Figure 5 and Figure 7 The negative pressure adsorption component 24 includes an adsorption plate 241, multiple adsorption holes 242, an adsorption chamber 243, a hollow connecting shaft 244, an intermediate air chamber 245, a suction pipe 246, and an on / off valve 247.

[0079] An adsorption surface is formed on the side of the adsorption plate 241 facing the profile 4, and multiple adsorption holes 242 are spaced apart on the adsorption surface. An adsorption cavity 243 is formed inside the adsorption plate 241 and communicates with each adsorption hole 242. A continuous flexible sealing ring is installed on the outer edge of the adsorption surface, and the flexible sealing ring is arranged around the multiple adsorption holes 242.

[0080] A hollow connecting shaft 244 is fixedly connected to the side of the adsorption plate 241 away from the adsorption surface, and the internal channel of the hollow connecting shaft 244 communicates with the adsorption chamber 243. An intermediate gas chamber 245 is formed inside the mounting base 21, and the lower end of the hollow connecting shaft 244 is fixedly connected to the mounting base 21 and communicates with the intermediate gas chamber 245. A sealing gasket is provided at the connection position between the hollow connecting shaft 244 and the mounting base 21, and it is pressed and fixed by a clamping flange.

[0081] One end of the suction pipe 246 is connected to the air inlet of the fan shroud 284, and the other end is connected to the intermediate air chamber 245. Sealing gaskets are installed at each joint of the suction pipe 246, and an on / off valve 247 is installed on the suction pipe 246. When the on / off valve 247 is open, the fan shroud 284, intermediate air chamber 245, hollow connecting shaft 244, adsorption chamber 243, and adsorption hole 242 are sequentially connected; when the on / off valve 247 is closed, the air passage between the adsorption chamber 243 and the fan shroud 284 is cut off.

[0082] When the rolling roller 221 is in its initial position, the adsorption surface of the adsorption plate 241 is lower than the supporting surface of the rolling roller 221. The profile 4 is a cold-formed H-beam or I-beam with a web 41 and two flanges 42. The web 41 is arranged horizontally, and the two flanges 42 are arranged vertically. At each receiving assembly 2, the lower edges of the two flanges 42 are supported together on the corresponding rolling roller 221, with the outer surface of the outer arc flange 42 facing the friction roller 232 and the lower surface of the web 41 facing the adsorption plate 241.

[0083] The triggering part of the triggering push rod 302 is located on the downward movement path of the web 41. When the rolling roller 221 is in the initial position, the initial height of the triggering part is higher than the supporting surface of the rolling roller 221. The height difference between the triggering part and the supporting surface of the rolling roller 221 is set according to the distance between the lower surface of the web 41 and the lower edge of the flange 42.

[0084] In this embodiment, the hollow connecting shaft 244 is fixedly connected between the adsorption plate 241 and the mounting base 21, the adsorption plate 241 and the mounting base 21 remain relatively fixed, and the adsorption cavity 243 is kept in sealed communication with the intermediate air cavity 245 through the hollow connecting shaft 244.

[0085] Example 2

[0086] The difference between this embodiment and embodiment one is that the hollow connecting shaft 244 and the mounting base 21 are connected by a floating connection, and a floating support structure 25 is provided on the mounting base 21. The adsorption plate 241 can move horizontally relative to the mounting base 21. The rest of the structure is the same as that in embodiment one.

[0087] Reference Figure 7 The floating support structure 25 includes a floating support seat 251, an annular receiving cavity 252, a top opening 253, a floating ring plate 254, multiple buffer elastic elements 255, and an annular connecting port 256.

[0088] A floating support 251 is fixedly mounted on a mounting base 21, and an annular sealing gasket is installed between the bottom surface of the floating support 251 and the mounting base 21. The annular sealing gasket is arranged around the annular connection port 256. The floating support 251 and the mounting base 21 are fixedly connected by bolts, which are spaced apart along the outer side of the annular sealing gasket.

[0089] The floating support 251 has an annular cavity 252 inside, and a top opening 253 is formed at the top of the floating support 251 and communicates with the annular cavity 252. The diameter of the top opening 253 is smaller than the diameter of the annular cavity 252.

[0090] The hollow connecting shaft 244 moves through the top opening 253, and a floating ring plate 254 is fixedly mounted on the outer periphery of the hollow connecting shaft 244. The floating ring plate 254 is located inside the annular receiving cavity 252, and the outer diameter of the floating ring plate 254 is larger than the diameter of the top opening 253 and smaller than the diameter of the annular receiving cavity 252.

[0091] The lower surface of the floating ring plate 254 is in contact with the bottom wall of the annular cavity 252, forming a planar sliding pair. The floating ring plate 254 can slide horizontally along the bottom wall of the annular cavity 252, maintaining dynamic frictional contact between the floating ring plate 254 and the bottom wall of the annular cavity 252. An assembly gap is left between the upper surface of the floating ring plate 254 and the top wall of the annular cavity 252, and the periphery of the top opening 253 restricts the floating ring plate 254 from disengaging upwards.

[0092] The lower surface of the floating ring plate 254 and the bottom wall of the annular receiving cavity 252 are machined into continuous planes, and a lubricating grease is applied between them or a wear-resistant sliding layer is provided. The wear-resistant sliding layer can be a polyoxymethylene layer or a polytetrafluoroethylene composite layer. The frictional resistance between the floating ring plate 254 and the bottom wall of the annular receiving cavity 252 is less than the resultant force of the multiple buffer elastic elements 255 forming a restoring force after the floating ring plate 254 deviates from the center position.

[0093] Multiple buffer elastic elements 255 are evenly arranged along the circumference of the floating ring plate 254. One end of each buffer elastic element 255 is connected to the outer periphery of the floating ring plate 254, and the other end is connected to the circumferential inner wall of the annular receiving cavity 252. When the floating ring plate 254 is in the center position, each buffer elastic element 255 remains in a pre-tightened state.

[0094] When the floating ring plate 254 moves horizontally, the buffer elastic element 255 in front of the displacement direction is compressed, and the buffer elastic element 255 in the rear displacement direction is stretched. After the horizontal load is released, the restoring resultant force formed by the multiple buffer elastic elements 255 overcomes the static friction between the floating ring plate 254 and the bottom wall of the annular receiving cavity 252, driving the floating ring plate 254 back to the center position.

[0095] An annular connecting port 256 is formed on the mounting base 21 and communicates with the intermediate air chamber 245. The annular connecting port 256 covers the horizontal movement trajectory of the lower end of the hollow connecting shaft 244. When the hollow connecting shaft 244 moves horizontally, the lower end of the hollow connecting shaft 244 remains within the area covered by the annular connecting port 256.

[0096] A flexible sealing sleeve is installed between the top opening 253 and the hollow connecting shaft 244. The flexible sealing sleeve is made of rubber corrugated sleeve. The inner edge of the flexible sealing sleeve seals the outer periphery of the hollow connecting shaft 244, and the outer edge of the flexible sealing sleeve seals the periphery of the top opening 253. When the hollow connecting shaft 244 moves horizontally, the flexible sealing sleeve deforms laterally with the hollow connecting shaft 244.

[0097] The flexible sealing sleeve, the circumferential wall of the floating support 251, and the annular sealing gasket at the bottom of the floating support 251 together form a closed transition air chamber. The adsorption chamber 243 is connected to the fan hood 284 in sequence through the hollow connecting shaft 244, the transition air chamber, the annular connecting port 256, the intermediate air chamber 245, and the suction pipe 246.

[0098] When the adsorption plate 241 is subjected to a vertical load, the vertical load is transmitted sequentially to the mounting base 21 through the hollow connecting shaft 244, the floating ring plate 254, the bottom wall of the annular cavity 252, and the floating support 251. When the adsorption plate 241 is subjected to a horizontal load, the hollow connecting shaft 244 drives the floating ring plate 254 to slide along the bottom wall of the annular cavity 252.

[0099] This embodiment is applicable to the start-up, stopping, and turning of the trolley, as well as the instantaneous horizontal disturbances caused by minor collisions with surrounding components. It is not designed to withstand high-energy rigid impacts. The maximum horizontal displacement of the floating ring plate 254... The minimum value among the radial clearance between the floating ring plate 254 and the annular receiving cavity 252, the allowable deformation of the buffer elastic element 255, and the allowable lateral deformation of the flexible sealing sleeve is determined. The first telescopic element 261 remains extended during the transfer phase, so that the profile 4 is continuously pressed against the adsorption surface of the adsorption plate 241.

[0100] To ensure that profile 4 and adsorption plate 241 remain relatively stationary during the floating buffer process, the relevant parameters must satisfy:

[0101]

[0102] In the formula, To determine the maximum instantaneous horizontal load under design transfer conditions; The sliding frictional resistance between the floating ring plate 254 and the bottom wall of the annular cavity 252; The combined restoring force formed by multiple buffer elastic elements 255 at the maximum horizontal displacement; The equivalent static friction coefficient between profile 4 and the adsorption surface; To maintain the normal holding force applied to the profile 4 when the first telescopic member 261 is extended; The pressure difference between the external environment and the adsorption chamber 243; The effective adsorption area of ​​the region enclosed by the flexible sealing ring.

[0103] Under the above conditions, when the horizontal load does not exceed the design range, the profile 4 and the adsorption plate 241 together generate horizontal displacement. The floating ring plate 254 bears the horizontal load before reaching the maximum allowable displacement, and the profile 4 does not slide relative to the adsorption surface. After the horizontal load is released, the buffer elastic element 255 drives the floating ring plate 254, the hollow connecting shaft 244 and the adsorption plate 241 back to the initial position.

[0104] In another sealing configuration, an annular elastic sealing lip is provided on the inner circumference of the top opening 253. The annular elastic sealing lip slides and fits against the outer circumference of the hollow connecting shaft 244, and the radial deformation of the annular elastic sealing lip covers the horizontal movement range of the hollow connecting shaft 244. When an annular elastic sealing lip is used, it is integrally connected to the floating support 251.

[0105] Working principle

[0106] Before conveying the profile 4, the trolley is adjusted according to the length, bending radius, and predetermined receiving position of the profile 4. The transverse movable frame 12 moves along the bottom frame 11, the movable seat 13 moves along the transverse movable frame 12, and the rotary bearing beam 14 rotates around the vertical axis, so that the two receiving components 2 reach the loading area. Then, the distance between the two receiving bases 15 is adjusted along the rotary bearing beam 14, and the positions of the two mounting seats 21 on the corresponding receiving bases 15 are adjusted so that the two rolling rollers 221 correspond to the two receiving positions of the profile 4, and the two friction rollers 232 correspond to the outer side surface of the outer arc flange 42 of the profile 4. After the positions are determined, the receiving bases 15 and mounting seats 21 are locked respectively.

[0107] After the trolley adjustment is completed, the first telescopic member 261 and the second telescopic member 271 remain retracted, the rolling roller 221 is at its initial height supported by the reset elastic member 225, and the adsorption surface of the adsorption plate 241 is lower than the supporting surface of the rolling roller 221. The trigger push rod 302 is in the upper position supported by the second elastic member 304, the sealing piston rod 306 is in the upper position under the traction of the third elastic member 307, and the air pressure chamber 291 maintains its initial volume. The opening and closing valve 247 is in the closed state, and the drive motor 281 is in the stopped state.

[0108] The profile 4 is placed on two receiving components 2. At each receiving component 2, the lower edges of the two flanges 42 are supported on the rolling roller 221, the web 41 is located above the trigger push rod 302 and the adsorption plate 241, the outer arc side flange 42 of the profile 4 faces the positioning drive roller 23, and the inner arc side flange 42 of the profile 4 faces the side push component 27.

[0109] After the profile 4 is placed, the two second telescopic members 271 extend respectively, and the second ball bearings 272 push the corresponding flange 42 from the inner arc side of the profile 4. The profile 4 moves laterally on the rolling roller 221 until the outer surface of the outer arc side flange 42 contacts the two friction rollers 232 respectively. The two second telescopic members 271 maintain their current position, so that the profile 4 continues to abut against the two friction rollers 232.

[0110] Subsequently, the two first telescopic members 261 extend downwards, and the first balls 262 contact the upper surface of the web 41 respectively. The initial holding amount applied by the first telescopic members 261 at this stage only keeps the profile 4 between the rolling roller 221, the friction roller 232, and the second ball 272. The rolling roller 221 has not yet descended to the trigger stroke that causes the web 41 to press against the trigger part, and the web 41 has not yet pushed the trigger push rod 302 downwards.

[0111] After profile 4 enters the position adjustment stage, drive motor 281 starts at the positioning speed, which is lower than the suction speed used in the subsequent suction stage. Drive motor 281 drives transmission shaft 282 to rotate, and transmission shaft 282 simultaneously drives drive gear 285 and suction impeller 283 to rotate. At this time, valve 247 remains closed, the air passage between adsorption chamber 243 and fan shroud 284 is cut off, and the rotation of suction impeller 283 does not evacuate adsorption chamber 243.

[0112] The driving gear 285 drives the rotating shaft 231 to rotate via the driven gear 234. When the pneumatic chamber 291 is in its initial volume, no negative pressure is formed within it to drive the locking block 293 to retract. The first elastic element 294 pushes the locking block 293 toward the transmission ring 295. When the locking block 293 is circumferentially aligned with the locking groove 296, the locking block 293 extends into the locking groove 296, and the rotating shaft 231 drives the friction roller 232 to rotate via the locking block 293 and the transmission ring 295.

[0113] When the locking block 293 and the locking groove 296 are not circumferentially aligned at the start of the positioning drive, the first guide slope of the locking block 293 abuts against the inner circumferential surface of the transmission ring 295. After the rotating shaft 231 rotates at low speed, the locking block 293 rotates relative to the transmission ring 295 with the rotating shaft 231; when the locking block 293 moves to the entrance of the locking groove 296, the first elastic element 294 pushes the locking block 293 along the first guide slope and the second guide slope into the locking groove 296, and the rotating shaft 231 and the friction roller 232 then form a transmission connection.

[0114] The rotation directions of the two drive motors 281 are set according to the contact directions between the corresponding friction rollers 232 and the profile 4, so that the two friction rollers 232 form a tangential velocity along the predetermined moving direction of the profile 4 at their respective contact positions. The two friction rollers 232 together drive the profile 4 to move along the arc-shaped extension direction. During the movement of the profile 4, the rolling roller 221, the first ball 262, and the second ball 272 roll at their respective contact positions. After the profile 4 moves to the predetermined position, the drive motors 281 stop rotating for positioning.

[0115] After the profile 4 completes its position adjustment, the first telescopic member 261 continues to extend downwards, and the first ball bearing 262 pushes the web plate 41 and the profile 4 as a whole to move downwards. The lower edges of the two flanges 42 press down on the rolling roller 221, the two support arms 222 descend along the relief groove 226, the guide plate 224 descends synchronously along the guide rod 223, and the reset elastic member 225 undergoes elastic deformation as the support arms 222 descend.

[0116] As profile 4 continues to move downwards, the lower surface of web 41 contacts the trigger portion of trigger push rod 302. As the first telescopic member 261 continues to extend, web 41 pushes trigger push rod 302 downwards, causing piston plate 303 to move downwards within the pressure transmission chamber, compressing the second elastic member 304. Piston plate 303 pushes the hydraulic medium within the pressure transmission chamber through connecting pipe 308 into the hydraulic drive space within fixed sleeve 305.

[0117] The hydraulic medium entering the fixed sleeve 305 pushes the first vertical section of the sealing piston rod 306 downward. When the first vertical section moves downward, it stretches the third elastic element 307 and drives the second vertical section to descend synchronously through the transverse connecting section. The second vertical section rotates and reciprocates, sliding the sealing sleeve axially, so that the volume of the air pressure chamber 291 increases as the second vertical section descends.

[0118] After the volume of the air pressure chamber 291 increases, a negative pressure is formed inside the air pressure chamber 291, creating a pressure difference between the end of the locking block 293 facing the bottom wall of the mounting groove 292 and the end facing the transmission ring 295. Driven by the pressure difference, the locking block 293 moves into the mounting groove 292, compressing the first elastic element 294 during the movement. After the locking block 293 completely exits the locking groove 296, the rotating shaft 231 is disconnected from the friction roller 232.

[0119] After the clutch assembly 29 disengages, the first telescopic member 261 continues to extend downwards, and the profile 4 and the rolling roller 221 continue to descend until the lower surface of the web 41 is in contact with the adsorption surface of the adsorption plate 241. The flexible sealing ring at the outer edge of the adsorption surface contacts the lower surface of the web 41, and multiple adsorption holes 242 are located within the area enclosed by the flexible sealing ring. At this time, the rolling roller 221 still supports the profile 4 through the flange 42, and the first ball bearing 262 maintains pressure on the web 41 from above.

[0120] After the profile 4 is attached to the adsorption surface, the opening and closing valve 247 is opened, and the drive motor 281 is restarted. The drive motor 281 increases from the positioning speed to the suction speed, which is higher than the positioning speed. The transmission shaft 282 drives the suction impeller 283 to rotate inside the fan cover 284, while the driving gear 285 and the driven gear 234 continue to drive the rotating shaft 231 to rotate.

[0121] When the rotating shaft 231 is at the suction speed, the reciprocating sealing sleeve rotates circumferentially with the rotating shaft 231 relative to the second vertical section of the sealing piston rod 306. The second vertical section remains in the downward position, and the reciprocating sealing ring continues to adhere to the outer circumference of the second vertical section. The air pressure chamber 291 remains in an expanded state, the locking block 293 remains disengaged from the locking groove 296, the rotating shaft 231 rotates idling relative to the friction roller 232, and the friction roller 232 no longer rotates at high speed with the rotating shaft 231.

[0122] After the suction impeller 283 rotates, the gas in the adsorption holes 242 and adsorption chamber 243 sequentially passes through the hollow connecting shaft 244, the intermediate gas chamber 245 and the suction pipe 246 into the fan shroud 284, and then is discharged from the exhaust end of the fan shroud 284. The drive motor 281 maintains the suction speed according to the preset suction time, so that a negative pressure is formed between the web plate 41 and the adsorption plate 241.

[0123] When the floating support structure 25 of Embodiment 2 is used, the gas in the adsorption chamber 243 first enters the hollow connecting shaft 244, and then enters the suction pipe 246 through the transition gas chamber, annular connecting port 256 and intermediate gas chamber 245 in the floating support seat 251. The flexible sealing sleeve seals the gap between the top opening 253 and the hollow connecting shaft 244, and the annular sealing gasket seals the connection position between the floating support seat 251 and the mounting base 21.

[0124] After the preset suction time is reached, the on / off valve 247 is closed, cutting off the air passage between the adsorption chamber 243 and the fan hood 284, and then the drive motor 281 stops. The first telescopic member 261 remains in the extended position, keeping the web plate 41 in contact with the adsorption plate 241. The two second telescopic members 271 retract, and the second ball bearings 272 move away from the inner arc side flange 42 of the profile 4.

[0125] After the profile 4 is fixed by adsorption, the trolley enters the transfer stage. The transverse movable frame 12 moves along the bottom frame 11, the movable seat 13 moves along the transverse movable frame 12, and the rotary bearing beam 14 rotates around the vertical axis. The two receiving components 2 together drive the profile 4 from the loading position to the unloading position. During the transfer process, the opening and closing valve 247 remains closed, and the first telescopic component 261 remains in the extended position.

[0126] When the floating support structure 25 of Embodiment 2 is used, after the profile 4 is subjected to a horizontal external force during the transfer process, the profile 4 drives the adsorption plate 241 and the hollow connecting shaft 244 to generate horizontal displacement. The hollow connecting shaft 244 drives the floating ring plate 254 to slide along the bottom wall of the annular cavity 252, and dynamic friction is formed between the floating ring plate 254 and the bottom wall of the annular cavity 252.

[0127] During the movement of the floating ring plate 254, the buffer elastic element 255 in the forward displacement direction is compressed, and the buffer elastic element 255 in the rear displacement direction is stretched. The lower end of the hollow connecting shaft 244 is always within the coverage area of ​​the annular connecting port 256, and the flexible sealing sleeve undergoes lateral deformation along with the hollow connecting shaft 244. After the horizontal external force is released, the restoring resultant force formed by multiple buffer elastic elements 255 overcomes the static friction between the floating ring plate 254 and the bottom wall of the annular receiving cavity 252, driving the floating ring plate 254, the hollow connecting shaft 244, and the adsorption plate 241 back to their initial positions.

[0128] After profile 4 reaches the unloading position, the first telescopic member 261 temporarily remains in the extended position, and the on / off valve 247 opens. Outside air enters the intermediate air chamber 245 through the fan hood 284 and the suction pipe 246, and then enters the adsorption chamber 243 through the intermediate air chamber 245 and the hollow connecting shaft 244, gradually restoring the pressure within the adsorption chamber 243. In embodiment two, outside air enters the hollow connecting shaft 244 through the intermediate air chamber 245, the annular connecting port 256, and the transition air chamber.

[0129] After the pressure in the adsorption chamber 243 is restored, the first telescopic member 261 retracts, the first ball 262 moves upward, and the downward pressure on the profile 4 is released. The reset elastic member 225 drives the support arm 222 and the rolling roller 221 to move upward, and the profile 4 moves upward with the rolling roller 221 and leaves the adsorption plate 241.

[0130] After profile 4 moves upward, web 41 moves away from the triggering part of trigger push rod 302. Second elastic element 304 pushes piston plate 303 and trigger push rod 302 upward to reset, and third elastic element 307 pulls the first vertical section of sealing piston rod 306 upward. Hydraulic medium in fixed sleeve 305 flows back to pressure transmission chamber through connecting pipe 308, and the first vertical section drives the second vertical section to move upward synchronously through transverse connecting section, and air pressure chamber 291 returns to its initial volume.

[0131] After the negative pressure in the air chamber 291 is released, the pressure difference between the two ends of the locking block 293 disappears, and the first elastic element 294 pushes the locking block 293 toward the transmission ring 295. When the locking block 293 is circumferentially aligned with the locking groove 296, the locking block 293 directly enters the locking groove 296; when the locking block 293 is not circumferentially aligned with the locking groove 296, the first guide slope of the locking block 293 abuts against the inner circumferential surface of the transmission ring 295.

[0132] At the start of the next conveying cycle, the drive motor 281 starts at the positioning speed, and the rotating shaft 231 drives the locking block 293 to rotate along the inner circumference of the transmission ring 295. After the locking block 293 reaches the entrance of the locking groove 296, the first elastic element 294 continues to push the locking block 293 to move. The first guide slope and the second guide slope cooperate with each other to make the locking block 293 enter the locking groove 296. The rotating shaft 231 and the friction roller 232 re-establish the transmission connection, and then the next position adjustment process of the profile 4 begins.

Claims

1. A conveying trolley for cold-bent steel profiles, characterized in that, It includes a trolley body (1) and two receiving components (2) spaced apart on the trolley body (1). Each of the receiving components (2) includes a mounting base (21), on which are provided a floating support roller (22), a positioning drive roller (23), a negative pressure adsorption component (24), a pressing component (26), a side push component (27), a drive component (28), a clutch component (29), and a load triggering component (30); the floating support roller (22) is slidably disposed on the mounting base (21) and supported by a reset elastic element (225), and the adsorption surface of the negative pressure adsorption component (24) is lower than the supporting surface of the floating support roller (22) when it is in the initial position; The positioning drive roller (23) includes a rotating shaft (231) and a friction roller (232) sleeved outside the rotating shaft (231). The clutch assembly (29) is disposed between the rotating shaft (231) and the friction roller (232). The side push assembly (27) is used to push the profile (4) towards the friction roller (232). The drive assembly (28) includes a drive motor (281) and a suction impeller (283). The drive motor (281) is connected to the rotating shaft (231) and the suction impeller (283) in a transmission connection. The suction impeller (283) is disposed inside a fan hood (284) that communicates with the negative pressure adsorption assembly (24). The load triggering component (30) is connected to the clutch component (29), and the triggering part of the load triggering component (30) is located on the path of the profile (4) moving down with the floating support roller (22); when the pressing component (26) presses the profile (4), the profile (4) drives the floating support roller (22) to move down and press against the triggering part, so that the rotating shaft (231) is disengaged from the friction roller (232) and the profile (4) is in contact with the adsorption surface.

2. The cold-bent steel section conveying trolley according to claim 1, characterized in that, The pressing assembly (26) includes a first telescopic member (261) and a first ball bearing (262) rotatably disposed at the telescopic end of the first telescopic member (261). The side pushing assembly (27) includes a second telescopic member (271) and a second ball bearing (272) rotatably disposed at the telescopic end of the second telescopic member (271). The extension directions of the two second telescopic members (271) are both toward the area between the two positioning drive rollers (23).

3. The cold-bent steel section conveying trolley according to claim 1, characterized in that, The drive assembly (28) further includes a drive shaft (282) connected to the output end of the drive motor (281), the suction impeller (283) is fixedly sleeved on the drive shaft (282), the drive shaft (282) is fixedly sleeved with a drive gear (285), and the rotating shaft (231) is fixedly sleeved with a driven gear (234) meshing with the drive gear (285); the friction roller (232) is rotatably sleeved on the rotating shaft (231), and the rotating shaft (231) is provided with limiting rings (233) at intervals at both ends of the friction roller (232), and the outer peripheral surface of the friction roller (232) is provided with a friction-enhancing roughening structure; The rotating shaft (231) is provided with a pneumatic chamber (291) extending along its axial direction. The outer circumferential surface of the rotating shaft (231) is provided with an installation groove (292) that communicates with the pneumatic chamber (291) through a connecting port (297). A locking block (293) is provided in the installation groove (292) and is slidably sealed. A first elastic element (294) is provided between the locking block (293) and the bottom wall of the installation groove (292). The inner circumferential surface of the friction roller (232) is provided with a transmission ring (295). The transmission ring (295) is provided with a locking groove (296) that cooperates with the locking block (293). When the locking block (293) extends into the locking groove (296), the rotating shaft (231) is connected to the friction roller (232) in a transmission connection. When the locking block (293) exits the locking groove (296), the rotating shaft (231) is disengaged from the friction roller (232) in a transmission connection.

4. The cold-bent steel section conveying trolley according to claim 3, characterized in that, The load triggering assembly (30) includes a trigger seat (301), a trigger push rod (302), a piston plate (303), a second elastic element (304), a fixed sleeve (305), a sealing piston rod (306), a third elastic element (307), and a connecting pipe (308); the trigger seat (301) is provided with a pressure transmission chamber, the piston plate (303) is sealed and slidably disposed in the pressure transmission chamber, the trigger push rod (302) is connected to the piston plate (303) and extends out of the trigger seat (301), the extended end of the trigger push rod (302) forms a trigger part, and the second elastic element (304) is disposed between the piston plate (303) and the trigger seat (301); The sealing piston rod (306) includes a first vertical section and a second vertical section spaced apart, and a transverse connecting section connecting the first vertical section and the second vertical section. The first vertical section is slidably and sealingly disposed within the fixed sleeve (305), and the second vertical section is slidably and sealingly disposed within the air pressure chamber (291). The fixed sleeve (305) is connected to the pressure transmission chamber through a connecting pipe (308). The third elastic element (307) is disposed within the fixed sleeve (305), and both ends of the third elastic element (307) are respectively connected to the fixed sleeve (305) and the first vertical section. When the trigger push rod (302) is pressed, the piston plate (303) drives the first vertical section to move downward and stretch the third elastic element (307) through the hydraulic medium in the pressure transmission chamber. The first vertical section drives the second vertical section to move downward synchronously through the transverse connecting section to increase the volume of the air pressure chamber (291). The third elastic element (307) is used to drive the sealing piston rod (306) to reset after the trigger push rod (302) is released from pressure.

5. The cold-bent steel section conveying trolley according to claim 1, characterized in that, The floating support roller (22) includes a rolling roller (221), two support arms (222) that rotatably support both ends of the rolling roller (221), a guide rod (223) fixedly disposed on the mounting base (21), and a guide plate (224) connected to the support arm (222). The guide plate (224) is slidably sleeved on the guide rod (223). The mounting base (21) has a relief groove (226) corresponding to the support arm (222). The reset elastic element (225) is disposed in the relief groove (226), and both ends of the reset elastic element (225) are connected to the mounting base (21) and the support arm (222) respectively.

6. The cold-bent steel section conveying trolley according to claim 1, characterized in that, The negative pressure adsorption assembly (24) includes an adsorption plate (241), adsorption holes (242), an adsorption cavity (243), and a hollow connecting shaft (244). The adsorption plate (241) has an adsorption surface on the side facing the profile (4). A plurality of adsorption holes (242) are formed on the adsorption surface. The adsorption cavity (243) is disposed in the adsorption plate (241) and communicates with the adsorption holes (242). The hollow connecting shaft (244) is disposed on the adsorption plate (241). The side facing away from the adsorption surface is connected to the adsorption chamber (243); the mounting base (21) is provided with an intermediate air chamber (245), the hollow connecting shaft (244) is connected to the intermediate air chamber (245), the air inlet end of the wind hood (284) is connected to the intermediate air chamber (245) through the suction pipe (246), the suction pipe (246) is provided with an opening and closing valve (247), and the outer edge of the adsorption surface is provided with a flexible sealing ring surrounding the multiple adsorption holes (242).

7. The cold-bent steel section conveying trolley according to claim 6, characterized in that, A floating support structure (25) is provided on the mounting base (21). The floating support structure (25) includes a floating support seat (251). The floating support seat (251) has an annular receiving cavity (252) and a top opening (253) communicating with the annular receiving cavity (252). The hollow connecting shaft (244) is movably inserted through the top opening (253). A floating ring plate (254) is fixedly sleeved on the outer periphery of the hollow connecting shaft (244) and located in the annular receiving cavity (252). The outer diameter of the floating ring plate (254) is larger than the diameter of the top opening (253) and smaller than the diameter of the annular receiving cavity (252). Multiple buffer elastic elements (255) are provided between the annular receiving cavity (252) and the circumferential inner wall; the mounting base (21) has an annular connecting port (256) that communicates with the intermediate air cavity (245), the annular connecting port (256) covers the horizontal movement trajectory of the lower end of the hollow connecting shaft (244), a flexible sealing sleeve is provided between the top opening (253) and the hollow connecting shaft (244), an annular sealing gasket is provided between the floating support (251) and the mounting base (21), the flexible sealing sleeve, the circumferential wall of the floating support (251) and the annular sealing gasket form a closed transition air cavity that communicates with the hollow connecting shaft (244) and the annular connecting port (256).

8. The cold-bent steel section conveying trolley according to claim 1, characterized in that, The trolley body (1) includes a bottom frame (11), a transverse movable frame (12) slidably disposed on the bottom frame (11) along a first horizontal direction, a movable seat (13) slidably disposed on the transverse movable frame (12) along a second horizontal direction, and a rotary bearing beam (14) rotatably disposed on the movable seat (13) about a vertical axis. The first horizontal direction and the second horizontal direction are perpendicular to each other. Both of the receiving components (2) include a receiving base (15) slidably disposed on the rotary bearing beam (14). The mounting seat (21) is disposed on the receiving base (15). The two receiving bases (15) can move towards each other or away from each other along the rotary bearing beam (14).

9. The cold-bent steel section conveying trolley according to claim 1, characterized in that, The profile (4) is an H-beam or I-beam with a web (41) and flanges (42) located on both sides of the web (41). The web (41) is arranged in a horizontal direction. The lower edges of the two flanges (42) are supported by a floating support roller (22). The friction roller (232) abuts against the outer surface of the flange (42) located on the outer arc side of the profile (4). The adsorption surface is arranged opposite to the lower surface of the web (41). The trigger part is located on the downward path of the web (41), and the initial height of the trigger part is higher than the support surface of the floating support roller (22).

10. A method for using a cold-bent steel section conveying trolley, characterized in that, Includes the following steps: The profile (4) is placed on the floating support rollers (22) of the two receiving components (2) on the trolley body (1), and the profile (4) is pushed to abut against the friction roller (232) of the positioning drive roller (23) by the side push component (27); With the rotating shaft (231) and the friction roller (232) in a transmission connection, the friction roller (232) is driven to rotate by the drive motor (281), so that the two friction rollers (232) together drive the profile (4) to move to the predetermined position; The profile (4) is pressed by the pressing component (26), causing the profile (4) to move the floating support roller (22) down and press against the trigger part of the load triggering component (30). The load triggering component (30) controls the clutch component (29) to release the transmission connection between the rotating shaft (231) and the friction roller (232), and makes the profile (4) fit against the adsorption surface of the negative pressure adsorption component (24). The drive motor (281) drives the suction impeller (283) to rotate, thereby evacuating the negative pressure adsorption assembly (24) and causing the negative pressure adsorption assembly (24) to adsorb the profile (4). After the negative pressure is established in the negative pressure adsorption assembly (24), the on / off valve (247) set on the suction pipe (246) is closed, and the trolley body (1) drives the profile (4) to move.

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