Pipe clamping and conveying device for machining seamless pipe for heat exchanger

Abstract

The invention relates to the technical field of steel pipe conveying devices, in particular to a pipe clamping and conveying device for machining seamless pipes for heat exchangers, which comprises a supporting table, a supporting frame is slidably mounted at the upper end of the supporting table, a detection ring is arranged on the right side of the supporting frame, a sliding table is slidably mounted at the upper end of the supporting table, and the detection ring is fixedly mounted at the upper end of the sliding table. A plurality of clamping frames are rotatably mounted on the side, close to the sliding table, of the supporting frame and used for stably clamping the seamless pipe, the clamping frames are annularly arranged, a fastening ring is fixedly mounted at the upper end of the sliding table through bolts, and a conveying device used for conveying the seamless pipe is arranged in the fastening ring; the end, close to the fastening ring, of the detection ring is rotationally provided with a plurality of abutting plates used for detecting the distortion degree of the seamless pipe, a driving motor drives a driving gear to rotate, a driving gear ring is driven to rotate, a driven gear and an output screw are driven to rotate in a linkage mode, the output screw drives a transmission chain belt, and stable conveying of the seamless pipe is achieved; linkage control of clamping, pressure relief and conveying is achieved through the whole structure.

Description

Technical Field

[0001] This invention relates to the field of steel pipe transport device technology, specifically a clamping device for processing seamless tubes for heat exchangers. Background Technology

[0002] Heat exchangers, as important heat exchange devices, are widely used in industries such as petrochemicals, air conditioning systems, power generation, and metallurgy. In these applications, seamless tubes, as one of the main structural components of heat exchangers, are widely used due to their excellent corrosion resistance, high strength, and long service life.

[0003] A search revealed that the prior art publication number CN210258516U discloses a transportation device for seamless pipes used in mining. The device includes a fixed plate with several bases fixedly welded to its top surface. Sliding plates are slidably connected to both sides of the inner surfaces of the bases. The top of each sliding plate penetrates the top of the base and extends to the outside of the base. A clamping plate is fixedly welded to one end of the sliding plate extending to the outside of the base. A second spring is fixedly welded between the opposite sides of the sliding plates and the inner wall of the base. This solution solves the problem that most existing transportation devices for seamless pipes in mining directly place the seamless pipes on a flatbed truck for transportation. During transportation, due to insecure fixing, the seamless pipes are prone to collisions, damaging their surfaces. If they fall during transportation, they may deform, causing economic losses.

[0004] Therefore, based on the above search and combined with existing technologies, existing transport devices generally use mechanical clamping or pneumatic clamping to fix and transport seamless tubes. However, in actual use, it is difficult to automatically adjust the clamping force according to the position change or deformation of the seamless tube. This can easily lead to excessive clamping force causing tube deformation, or insufficient clamping force causing unstable positioning. In addition, existing transport structures mostly use a single roller or push rod transmission method, which makes it difficult to achieve coordinated control of the clamping and transporting process. This can easily cause feeding deviation, slippage, and other phenomena, which seriously affect the processing accuracy and transport efficiency. Therefore, this application proposes a clamping and conveying device for processing seamless tubes for heat exchangers. Summary of the Invention

[0005] The purpose of this invention is to provide a clamping device for processing seamless tubes for heat exchangers, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a clamping device for processing seamless tubes for heat exchangers, comprising a support platform, a support frame slidably mounted on the upper end of the support platform, a detection ring provided on the right side of the support frame, a sliding platform slidably mounted on the upper end of the support platform, and the detection ring fixedly mounted on the upper end of the sliding platform, a plurality of clamping frames rotatably mounted on the side of the support frame near the sliding platform for stably clamping the seamless tube, the clamping frames being arranged in a ring shape, a fastening ring fixedly mounted on the upper end of the sliding platform by bolts, a transmission device for conveying the seamless tube being provided inside the fastening ring, and a plurality of abutment plates for detecting the twist degree of the seamless tube being rotatably mounted on the end of the detection ring near the fastening ring; The transmission device includes a limiting ring, which is fixedly installed at the inner end of a fastening ring. The limiting ring has multiple inner support plates arranged in a ring shape. A fastening bladder is provided between the inner support plates and the limiting ring. Multiple conductive chains are sleeved on the outer surface of the fastening bladder. The conductive chains are arranged in a ring shape and interlaced with the inner support plates. When the conductive chains rotate, they drive the seamless tube to move.

[0007] As a further embodiment of the present invention, a support ring is fixedly connected to one end of the detection ring near the fastening ring. A passive airbag is fixedly sleeved inside the support ring, and the outer surface of the abutment plate contacts the inner wall of the passive airbag. The abutment plate rotates toward the support ring, thereby squeezing the passive airbag. This can generate responsive feedback to the twisting or displacement of the seamless tube, thereby realizing auxiliary positioning or detection functions and improving the adaptability of the device to changes in the state of the seamless tube and the clamping stability.

[0008] As a further embodiment of the present invention, locking rings are fixedly installed at both ends of the fastening ring, and active gear rings are rotatably sleeved on the outer surface of each locking ring. Multiple output screws are rotatably installed at the inner ends of the two locking rings. The output screws are arranged in a ring shape, and a driven gear is fixedly installed on the outer surface of the output screws, and the driven gear meshes with the active gear ring.

[0009] As a further embodiment of the present invention, when the active gear ring rotates, it drives the output screw to rotate through the passive gear. When the gas is filled into the fastening bladder, its expansion causes the inner support plate to converge towards the center, thereby achieving clamping of the seamless tube and ensuring that the seamless steel tube is always in the center position. The outer surface of the transmission chain belt is provided with multiple rectangular strip holes, and the threaded teeth on the outer surface of the output screw pass through the rectangular strip holes.

[0010] As a further embodiment of the present invention, a transmission surface shell is fixedly installed on the upper end of the sliding table by bolts, an inner support cylinder is fixedly installed on the inner end of the transmission surface shell, an input pipe is fixedly connected to the right end of the inner support cylinder, an air compressor is fixedly installed on the inner end of the transmission surface shell, and a transmission pipe is sleeved on the outer surface of the input pipe.

[0011] As a further embodiment of the present invention, a movable tube is provided through the inner end of the inner support cylinder, the movable tube is corresponding to the transmission tube, and a connecting bucket is fixedly connected to the end of the movable tube near the transmission tube. By providing a movable tube inside the inner support cylinder and connecting it to the transmission tube, the conduction and linkage control of gas or mechanical actions can be realized, thereby improving the overall transmission efficiency and response sensitivity of the system.

[0012] As a further embodiment of the present invention, an air guide sleeve is fixedly installed at the inner end of the transmission tube, and a guide cover is sleeved on the outer surface of the air guide sleeve, and the guide cover and the air guide sleeve are connected by an air-closing spring.

[0013] As a further embodiment of the present invention, a central rod is inserted through the inner end of the air compressor, a movable plug is inserted through the inner end of the air compressor, and the movable plug is fixedly connected to the central rod. The movable plug and the air compressor are connected by a high-pressure spring. A limiting groove plate is fixedly installed on the inner end of the transmission housing. This structure, by setting a movable plug inside the air compressor and connecting it to the high-pressure spring, and by combining the cooperation of the central rod and the limiting groove plate, can achieve precise guidance and limiting control during the air pressure release or pressurization process.

[0014] As a further embodiment of the present invention, a transmission rod is fixedly installed on the outer surface of the connecting bucket, a protrusion is fixedly installed on the outer surface of the central rod, and the protrusion is located inside the limiting groove plate. A movable cylinder is fixedly installed at the end of the transmission rod away from the connecting bucket, the movable cylinder is located inside the limiting groove plate, and the protrusion passes through the interior of the movable cylinder.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. When this invention is used, through the cooperation structure of the air guide sleeve and the guide cover, when the transmission tube is inserted into the movable tube, the guide cover moves relative to the transmission tube under the action of the limiting block, so that the air hole on the air guide sleeve is connected to the cavity inside the guide cover, thereby realizing the release of excess gas inside the fastening bag, effectively avoiding the problem of excessive clamping force or uneven clamping, and ensuring that the seamless tube is stably clamped in the center position. 2. When this invention is used, the drive motor drives the drive gear to rotate, which in turn drives the active gear ring to rotate, which in turn drives the passive gear and the output screw to rotate. The output screw drives the transmission chain belt to achieve stable conveying of seamless tubes. The overall structure realizes the linkage control of clamping, pressure release and conveying. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a clamping device for processing seamless tubes for heat exchangers. Figure 2 This is a disassembled diagram of the support frame and sliding ring. Figure 3 This is a schematic diagram of the structure at the junction of the detection ring and the support ring; Figure 4 This is a schematic diagram of the structure between the ink reservoir and the contact plate. Figure 5 This is a schematic diagram of the internal structure of the output tube and the conduction tube; Figure 6 This is a schematic diagram of the structure at the fastening ring and the limiting ring; Figure 7 This is a structural disassembly diagram of the conductive chain and the fastening bladder. Figure 8 This is a schematic diagram of the structure at the junction of the transmission chain and the output screw. Figure 9 This is a schematic diagram of the structure at the transmission housing. Figure 10 This is a schematic diagram of the internal structure of the transmission housing; Figure 11 This is a schematic diagram of the internal structure of the movable tube and the transmission tube; Figure 12 This is a schematic diagram of the structure inside the limiting groove plate and the air compressor.

[0017] In the diagram: 1. Support platform; 2. Support frame; 3. Detection ring; 4. Fastening ring; 5. Sliding platform; 51. Transmission housing; 101. Sliding ring; 102. Locking buckle; 103. Clamping frame; 104. Abutment wheel; 201. Support ring; 202. Ink reservoir; 203. Abutment plate; 204. Compression spring; 205. Liquid guide tube; 206. Push rod; 207. Output tube; 208. Passive tube; 209. Conducting tube; 210. Nozzle; 211. Inner tube; 212. Abutment spring; 213. Passive airbag; 301. Limiting ring; 302. Locking ring; 303. Driving gear ring; 304. Driven gear; 305. Inner support plate; 306. Output screw; 307. Conductive chain; 308. Transmission sleeve; 309. Drive motor; 310. Drive gear; 311. Fastening bag; 401. Synchronizing pipe; 402. Input pipe; 403. Inner support cylinder; 404. Limiting groove plate; 405. Connecting bucket; 406. Transmission pipe; 407. Return spring; 408. Air compressor; 409. Movable pipe; 410. Air guide sleeve; 411. Air-closing spring; 412. Conductor cover; 413. Center rod; 414. High-pressure spring; 415. Movable plug; 416. Locking plate; 417. Protrusion; 418. Transmission rod; 419. Snap-fit ​​teeth. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figures 1-3 A clamping device for processing seamless tubes for heat exchangers includes a support platform 1, a support frame 2 slidably mounted on the upper end of the support platform 1, a detection ring 3 provided on the right side of the support frame 2, a sliding table 5 slidably mounted on the upper end of the support platform 1, and the detection ring 3 fixedly welded to the upper end of the sliding table 5. Specifically, the upper end of the support platform 1 is equipped with a sliding table, and the support frame 2 and the sliding table 5 are slidably mounted inside the sliding table. Multiple clamping frames 103 are rotatably mounted on the side of the support frame 2 near the sliding table 5 for stabilizing the clamping of the seamless tube. The clamping frames 103 are arranged in a ring. A fastening ring 4 is fixedly mounted on the upper end of the sliding table 5 by bolts. The fastening ring 4 is equipped with a transmission device for conveying the seamless tube. Multiple abutment plates 203 for detecting the torsion of the seamless tube are rotatably mounted on the end of the detection ring 3 near the fastening ring 4 via a rotating shaft. The abutment plates 203 are engaged with the detection ring 3 by torsion springs.

[0020] Specifically, one end of the support frame 2 of the clamping frame 103 is equipped with a rubber abutment wheel 104 via a rotating shaft. The outer surface of the wheel has anti-slip grooves, which can not only avoid hard contact with the seamless tube and cause surface scratches, but also provide sufficient friction resistance. A sliding ring 101 is sleeved around the clamping frame 103. Multiple locking buckles 102 are passed through the outer surface of the sliding ring 101, and the locking buckles 102 correspond to the clamping frame 103. The locking buckles 102 are slidably connected to the clamping frame 103. The locking buckle 102 is provided with a latch at the end near the clamping frame 103. The latch adopts a ratchet structure, and the greater the force, the more secure the lock is. This is a mature existing technology and will not be described in detail here. The locking buckle 102 moves with the sliding ring 101. When the sliding ring 101 moves towards the support frame 2, the end of the clamping frame 103 opens. Conversely, when the sliding ring 101 moves away from the support frame 2, the end of the clamping frame 103 closes. After the sliding ring 101 moves to the designated position, the locking buckle 102 is fixed to the outer surface of the clamping frame 103 by the latch.

[0021] like Figure 2 , Figure 3 As shown, a support ring 201 is fixedly connected to one end of the detection ring 3 near the fastening ring 4. The passive airbag 213 is fixedly sleeved inside the support ring 201 by a clamp, and the outer surface of the abutment plate 203 contacts the inner wall of the passive airbag 213. Specifically, multiple auxiliary plates are provided on the inner wall of the passive airbag 213. The outer surface of the auxiliary plates contacts the outer surface of the abutment plate 203. The abutment plate 203 rotates in the direction of the support ring 201, and then squeezes the passive airbag 213.

[0022] Example 2: Please refer to Figures 3-5 A clamping tube device for processing seamless tubes for heat exchangers, based on Embodiment 1, wherein a conductive tube 209 is rotatably mounted on one end of the abutment plate 203 away from the support ring 201 via a rotating shaft, and a printhead for inkjet printing is provided on the other end of the abutment plate 203 away from the support ring 201. The printhead and the conductive tube 209 are fixedly connected by a nozzle 210. A passive tube 208 is sleeved inside the conductive tube 209, and a sealing sleeve is sleeved on the outer surface of the passive tube 208 and contacts the inner wall of the conductive tube 209 to increase the sealing performance. The passive tube 208 is fixedly connected to an output tube 207 at the end away from the conduction tube 209. A push rod 206 is installed inside the output tube 207, and the push rod 206 is rotatably connected to the inner end of the support ring 201 via a rotating shaft. An inner tube 211 is fixedly installed at the inner end of the conduction tube 209. The inner tube 211 is installed inside the passive tube 208. Two through holes are opened on the outer surface of the inner tube 211, one of which is located inside the passive tube 208. The passive tube 208 and the conduction tube 209 are connected by abutment spring 212. When the abutment plate 203 rotates, it drives the conduction tube 209 to move toward the output tube 207. At this time, the passive tube 208 gradually penetrates into the interior of the conduction tube 209. As the passive tube 208 gradually penetrates into the interior of the conduction tube 209, the inner tube 211 penetrates into the interior of the output tube 207. Finally, the through hole on the outer surface of the inner tube 211 is exposed inside the output tube 207. The outer surface of the support ring 201 is provided with multiple grooves, which correspond to the abutment plate 203. The ink reservoir 202 is fixedly connected inside the grooves. The ink reservoir 202 is fixedly connected to the output tube 207 through the liquid guide tube 205. Specifically, the ink reservoir 202 is made of soft rubber and has a compression spring 204 inside. The two ends of the spring are fixedly connected to the opposite inner walls of the ink reservoir 202. The ink reservoir 202 is filled with dye and is always kept in a contracted state under the elastic force of the compression spring 204.

[0023] Please see Figures 6-8 The transmission device includes a limiting ring 301, which is fixedly installed on the inner end of a fastening ring 4. Locking rings 302 are fixedly installed on both the left and right ends of the fastening ring 4 by bolts. Active gear rings 303 are rotatably sleeved on the outer surface of the locking rings 302. Multiple output screws 306 are rotatably installed on the inner ends of the two locking rings 302. The output screws 306 are arranged in a ring shape. A driven gear 304 is fixedly installed on the outer surface of the output screws 306, and the driven gear 304 meshes with the active gear ring 303. When the active gear ring 303 rotates, it drives the output screw 306 to rotate through the passive gear 304. The inner bottom end of the fastening ring 4 is fixedly installed with a drive motor 309 by bolts. The output shaft of the drive motor 309 is fixedly connected to a drive gear 310, which meshes with the active gear ring 303.

[0024] The limiting ring 301 has multiple inner support plates 305 arranged in a ring. A fastening bladder 311 is provided between the inner support plate 305 and the limiting ring 301. Specifically, the two ends of the inner support plate 305 are arc-shaped to cover the fastening bladder 311 and prevent it from falling off. The fastening bladder 311 is made of thickened rubber material, which has excellent wear resistance and good elasticity. When the fastening bladder 311 is filled with gas, its expansion drives the inner support plate 305 to converge towards the center, thereby clamping the seamless tube and ensuring that the seamless steel tube is always in the center position. Multiple conduction chains 307 are sleeved on the outer surface of the fastening bladder 311. The conduction chains 307 are arranged in a ring and interlaced with the inner support plate 305. When the conduction chains 307 rotate, they drive the seamless tube to move. The conduction chains 307 are composed of multiple chain blocks that can rotate relative to each other. Its flexible connection structure can effectively resist tensile deformation. The outer surface of the transmission chain 307 has multiple rectangular slots, and the threaded teeth on the outer surface of the output screw 306 pass through the rectangular slots. When the output screw 306 rotates, it drives the rectangular slots to move through the threaded teeth, causing the transmission chain 307 to rotate. A transmission rubber sleeve 308 is fixedly installed on the outer surface of the transmission chain 307. When the transmission rubber sleeve 308 contacts the outer surface of the seamless tube, it is accompanied by the squeezing force of the fastening bladder 311 on the seamless tube. At this time, when the transmission chain 307 rotates, it drives the seamless tube to move.

[0025] Example 3: Please refer to Figure 1 , Figures 9-12 A clamping tube device for processing seamless tubes for heat exchangers, based on embodiments 1 and 2, wherein a transmission surface shell 51 is fixedly installed on the upper end of the sliding table 5 by bolts, an inner support cylinder 403 is fixedly installed on the inner end of the transmission surface shell 51, an input pipe 402 is fixedly connected to the right end of the inner support cylinder 403, the input end of the input pipe 402 is fixedly connected to the fastening bladder 311 (not shown in the figure), a compressor cylinder 408 is fixedly installed on the inner end of the transmission surface shell 51, a synchronization pipe 401 is fixedly connected to the input end of the compressor cylinder 408, and the input end of the synchronization pipe 401 is fixedly connected to the passive air bladder 213.

[0026] A transmission pipe 406 is sleeved on the outer surface of the input pipe 402. The transmission pipe 406 is connected to the inner support cylinder 403 by a return spring 407. A movable pipe 409 is inserted through the inner end of the inner support cylinder 403. The movable pipe 409 corresponds to the transmission pipe 406. A connecting bucket 405 is fixedly welded to one end of the movable pipe 409 near the transmission pipe 406. The connecting bucket 405 facilitates the smooth insertion of the transmission pipe 406 into the movable pipe 409. An air guide sleeve 410 is fixedly installed on the inner end of the transmission pipe 406. A guide cover 412 is sleeved on the outer surface of the air guide sleeve 410. The guide cover 412 and the air guide sleeve 410 are connected by an air-closing spring 411. Specifically, the outer surface of the air guide sleeve 410 is provided with a vent hole, which is located inside the guide cover 412. The end of the guide cover 412 away from the air guide sleeve 410 is provided with a cavity. When the vent hole moves into the cavity, air can pass through the vent hole and enter the cavity inside the guide cover 412, and then flow out from the air outlet of the guide cover 412. More specifically, a limit block is fixedly installed at the inner end of the movable tube 409. When the transmission tube 406 passes through the interior of the movable tube 409, the outer surface of the guide cover 412 contacts the limit block. As the transmission tube 406 continues to move, the guide cover 412 is subjected to a reaction force and moves in the direction of the transmission tube 406.

[0027] A central rod 413 passes through the inner end of the air compressor 408, and a movable plug 415 passes through the inner end of the air compressor 408. The movable plug 415 is fixedly connected to the central rod 413. The movable plug 415 and the air compressor 408 are connected by a high-pressure spring 414. A sealing ring is fitted on the outer surface of the movable plug 415 and fits against the inner wall of the air compressor 408 to increase air tightness. A limiting groove plate 404 is fixedly installed on the inner end of the transmission housing 51. A transmission rod 418 is fixedly installed on the outer surface of the connecting bucket 405. A protrusion 417 is fixedly installed on the outer surface of the central rod 413, and the protrusion 417 is located inside the limiting groove plate 404. A movable cylinder is fixedly installed at the end of the transmission rod 418 away from the connecting bucket 405. The movable cylinder is located inside the limiting groove plate 404, and the protrusion 417 passes through the inside of the movable cylinder. Locking plates 416 are installed at both the upper and lower ends of the movable cylinder. A locking tooth 419 is fixedly installed at the inner end of the limiting groove plate 404, and the locking plate 416 is locked in the inner end of the locking tooth 419. Specifically, an extension block is fixedly installed on one end of the locking plate 416 near the protrusion 417. Two protrusions 417 are provided, with the extension block located between them. An arc-shaped transition is used between the two protrusions 417 to effectively reduce movement resistance when in contact with the extension block. When the protrusion 417 moves in any direction, the two protrusions 417 press against each other and push the locking plate 416 away from the protrusion 417 through the extension block. At this time, the locking plate 416 disengages from the engagement tooth 419, and the continuous movement of the protrusion 417... When the cylinder moves, the movable tube 409 is moved via the movable cylinder and the transmission rod 418. More specifically, two springs are fixedly installed inside the movable cylinder. The two springs are located at both ends of the protrusion 417. Under the elastic force of the springs, the protrusion 417 is always located in the center of the movable cylinder. The outer surface of the locking plate 416 is fixedly connected with a spring. When the spring is not lifted, the locking plate 416 is always locked inside the locking tooth 419, and the movable cylinder cannot move.

[0028] The gas inside the clamping bladder 311 is supplied by an external compressor. The output end of the compressor is connected to a high-pressure pipe, which is connected to the clamping bladder 311. The pressure from the compressor causes the clamping bladder 311 to expand, and the resulting pressure is sufficient to clamp and fix the seamless tube.

[0029] The working principle of this invention is: In use, the position of the sliding ring 101 is adjusted according to the thickness of the seamless tube and fixed by the locking buckle 102. Then, the seamless tube is passed through the support frame 2. As the seamless tube continues to move, its end comes into the interior of the passive airbag 213. At this time, the end of the abutment plate 203 contacts the outer surface of the seamless tube and begins to rotate. At this time, the passive tube 208 gradually penetrates into the interior of the conduction tube 209. As the passive tube 208 gradually penetrates into the interior of the conduction tube 209, the inner tube 211 penetrates into the interior of the output tube 207. Finally, the through hole on the outer surface of the inner tube 211 is exposed inside the output tube 207. Then, the ink reservoir 202 continuously discharges dye under the elastic force of the compression spring 204. The dye is discharged by the elastic force of the compression spring 204. Since the nozzle diameter is small, the elastic force of the compression spring 204 cannot discharge all the dye inside at once. If the outer surface of the seamless tube has obvious bending, when it passes the abutment plate 203, the abutment plate 203 will rotate rapidly, and the output tube 207 will be forced to move in the direction of the push rod 206 (before this, the output tube 207 is already under pressure from the dye output by the ink reservoir 202). At this moment, the dye inside the output tube 207 is instantly squeezed, making the flow rate of the dye faster, and it will be quickly sprayed out from the nozzle 210. At this time, a noticeably thicker line segment can be seen at the bending point of the seamless tube, which indicates that there is a twist at that position of the seamless tube.

[0030] When the contact plate 203 rotates, it begins to compress the passive airbag 213. The gas squeezed out of the passive airbag 213 is transmitted to the inside of the compressor cylinder 408 through the synchronization pipe 401. The pressure inside the compressor cylinder 408 increases, which pushes the movable plug 415 to move. The movable plug 415 then drives the center rod 413 to move. When the center rod 413 moves, it drives the protrusion 417 to move. When the protrusion 417 moves, it drives the transmission rod 418 to move. At this time, the connecting bucket 405 begins to move away from the transmission pipe 406. When the compressor outputs gas, the clamping bladder 311 achieves a clamping action by inflating. As the pressure increases, the gas enters the interior of the transmission tube 406 through the input tube 402. When the input tube 402 moves, it first resists the pressure of the return spring 407. When the pressure inside the transmission tube 406 is greater than the pressure of the return spring 407, the transmission tube 406 begins to move towards the connecting bucket 405. The larger the diameter of the seamless tube, the larger its volume, so a larger clamping force is required to make it more stable. Conversely, the larger the volume of the seamless tube, the farther the distance between the connecting bucket 405 and the transmission tube 406, so the longer the path of the transmission tube 406, and the greater the elastic force resisting the return spring 407. When the transmission tube 406 is inserted into the movable tube 409, the outer surface of the guide cover 412 contacts the limiting block. As the transmission tube 406 continues to move, the guide cover 412 is subjected to a reaction force and moves toward the transmission tube 406. Then, when the air hole on the outer surface of the air guide sleeve 410 moves into the cavity, air can pass through the air hole and enter the cavity inside the guide cover 412. Then, it flows out from the air outlet of the guide cover 412. At this time, the excess gas inside the fastening bag 311 is released, and the clamping force of the fastening bag 311 on the seamless tube is also guaranteed. The output shaft of the drive motor 309 drives the drive gear 310 to rotate. The active gear ring 303 rotates in meshing with the drive gear 310, which in turn drives the output screw 306 to rotate with the passive gear 304. The seamless tube is then transported through the transmission chain 307.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tube clamping device for processing seamless tubes for heat exchangers, comprising a support platform (1), characterized in that: A support frame (2) is slidably installed on the upper end of the support platform (1). A detection ring (3) is provided on the right side of the support frame (2). A sliding platform (5) is slidably installed on the upper end of the support platform (1). The detection ring (3) is fixedly installed on the upper end of the sliding platform (5). Multiple clamping frames (103) are rotatably installed on the side of the support frame (2) near the sliding platform (5) for stabilizing the clamping of the seamless tube. The clamping frames (103) are arranged in a ring. A fastening ring (4) is fixedly installed on the upper end of the sliding platform (5) by bolts. A transmission device for conveying the seamless tube is provided inside the fastening ring (4). Multiple abutment plates (203) for detecting the twist of the seamless tube are rotatably installed on the end of the detection ring (3) near the fastening ring (4). The transmission device includes a limiting ring (301), which is fixedly installed on the inner end of the fastening ring (4). The limiting ring (301) has multiple inner support plates (305) inside, which are arranged in a ring shape. A fastening bladder (311) is provided between the inner support plate (305) and the limiting ring (301). Multiple transmission chains (307) are sleeved on the outer surface of the fastening bladder (311). The transmission chains (307) are arranged in a ring shape and are interlaced with the inner support plates (305). When the transmission chains (307) rotate, they drive the seamless tube to move.

2. The clamping device for processing seamless tubes for heat exchangers according to claim 1, characterized in that: The detection ring (3) is fixedly connected to a support ring (201) at one end near the fastening ring (4). A passive airbag (213) is fixedly sleeved inside the support ring (201), and the outer surface of the abutment plate (203) contacts the inner wall of the passive airbag (213). The abutment plate (203) rotates toward the support ring (201) and squeezes the passive airbag (213).

3. The clamping device for processing seamless tubes for heat exchangers according to claim 1, characterized in that: Locking rings (302) are fixedly installed at both ends of the fastening ring (4). Active gear rings (303) are rotatably sleeved on the outer surface of the locking rings (302). Multiple output screws (306) are rotatably installed at the inner ends of the two locking rings (302). The output screws (306) are arranged in a ring shape. A passive gear (304) is fixedly installed on the outer surface of the output screws (306), and the passive gear (304) meshes with the active gear ring (303).

4. The clamping device for processing seamless tubes for heat exchangers according to claim 3, characterized in that: When the active gear ring (303) rotates, it drives the output screw (306) to rotate through the passive gear (304). When the fastening bladder (311) is filled with gas, its expansion drives the inner support plate (305) to converge towards the center, thereby clamping the seamless tube and ensuring that the seamless steel tube is always in the center position. The outer surface of the transmission chain belt (307) is provided with multiple rectangular strip holes, and the threaded teeth on the outer surface of the output screw (306) pass through the rectangular strip holes.

5. The clamping device for processing seamless tubes for heat exchangers according to claim 1, characterized in that: The upper end of the sliding table (5) is fixedly installed with a transmission surface shell (51) by bolts. The inner end of the transmission surface shell (51) is fixedly installed with an inner support cylinder (403). The right end of the inner support cylinder (403) is fixedly connected with an input pipe (402). The inner end of the transmission surface shell (51) is fixedly installed with an air compressor (408). The outer surface of the input pipe (402) is fitted with a transmission pipe (406).

6. The clamping device for processing seamless tubes for heat exchangers according to claim 5, characterized in that: The inner end of the inner support cylinder (403) is provided with a movable tube (409), which corresponds to the transmission tube (406), and a connecting bucket (405) is fixedly connected to one end of the movable tube (409) near the transmission tube (406).

7. A clamping device for processing seamless tubes for heat exchangers according to claim 6, characterized in that: An air guide sleeve (410) is fixedly installed at the inner end of the transmission tube (406). A guide cover (412) is sleeved on the outer surface of the air guide sleeve (410), and the guide cover (412) and the air guide sleeve (410) are connected by an air-closing spring (411).

8. The clamping device for processing seamless tubes for heat exchangers according to claim 7, characterized in that: A central rod (413) is inserted through the inner end of the air compressor (408), and a movable plug (415) is inserted through the inner end of the air compressor (408). The movable plug (415) is fixedly connected to the central rod (413), and the movable plug (415) is connected to the air compressor (408) by a high-pressure spring (414). A limit groove plate (404) is fixedly installed on the inner end of the transmission housing (51).

9. A clamping device for processing seamless tubes for heat exchangers according to claim 8, characterized in that: A transmission rod (418) is fixedly installed on the outer surface of the connecting bucket (405), and a protrusion (417) is fixedly installed on the outer surface of the center rod (413). The protrusion (417) is located inside the limiting groove plate (404). A movable cylinder is fixedly installed at the end of the transmission rod (418) away from the connecting bucket (405). The movable cylinder is located inside the limiting groove plate (404), and the protrusion (417) penetrates the movable cylinder.

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