Sandwich board quick connecting device

Abstract

The invention discloses a quick connecting device for sandwich panels, and relates to the technical field of building engineering construction. The bearing piece and the butt joint piece are connected to the side edges of two adjacent plates respectively, the bearing piece and the butt joint piece are opposite in position, the butt joint piece is of a square tubular structure, the bearing piece is of a U-shaped structure, and an opening of the bearing piece is suitable for the butt joint piece to be embedded and clamped; a fixing mechanism; a release mechanism; and a transmission mechanism. A clamping structure of the two-way trapezoidal locking block and the locking block is adopted, a one-way locking mechanism is formed in combination with the pre-tightening force of the first spring, and a triple fixing structure of transverse locking, longitudinal limiting and axial pre-tightening is constructed in cooperation with sliding limiting of the guide sliding rails on the two sides of the fixing pin and the fixing rail and axial pre-tightening of the extrusion rod and the third spring; concentration of contact stress is avoided, the influence of weight load and vibration of the sandwich panel is effectively resisted, separation in long-term use is prevented, and the integrity of a building envelope is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a quick connection device for sandwich panels. Background Technology

[0002] In the construction industry, sandwich panels (also known as composite sandwich panels) are a three-layer composite board consisting of a panel, a core material, and another panel. They are formed by bonding, pressing, or foaming processes and have multiple functions such as structural load-bearing, thermal insulation, fire resistance, and sound insulation. They are the core enclosure material for modern prefabricated buildings, industrial plants, temporary buildings, and other scenarios. Their core advantage lies in integrated construction, which integrates the multiple processes of structural layers, insulation layers, and decorative layers in traditional buildings into a single panel through factory prefabrication, greatly improving construction efficiency and building performance.

[0003] A search revealed a Chinese patent with publication number CN222796746U, which discloses a quick connection device for color steel sandwich panels. The device includes a connecting block, a sliding groove on the top surface of the connecting block, an adjusting rod slidably connected inside the sliding groove, an installation block fixedly connected to one side of the adjusting rod, and clamping plates fixedly connected to both sides of the connecting block. The clamping plates are provided with fixing components, including a screw, the screw threaded through the middle of the clamping plate surface, and a fixing plate rotatably connected to one end of the screw. Anti-slip blocks are affixed to the surface of the fixing plates, and the anti-slip blocks are made of a flexible material.

[0004] The aforementioned patent has the following shortcomings: When in use, the device utilizes a fixing component, connecting block, and mounting block working together. Personnel can place the color steel sandwich panel to be connected between the clamping plates, and then turn the screw to push the fixing plate towards the center, fixing the color steel sandwich panel inside the clamping plate. The anti-slip block further restricts the color steel sandwich panel, thus facilitating quick and easy fixing. This device fixes the sandwich panels in a straight line when connecting and fixing two panels. However, considering the application requirements of sandwich panels in existing technologies, the device in this patent solution has the following shortcomings: insufficient clamping stability, making it difficult to adapt to high-load scenarios: the device only uses a screw to drive the fixing plate to clamp the sandwich panel from both sides in a planar manner. The current technology suffers from a single method, concentrated contact stress, and a lack of longitudinal restraint structures. In existing technologies, sandwich panels commonly used in industrial plants and large prefabricated buildings often have significant weight loads. This simple clamping method can easily cause the sandwich panels to detach from the middle of the clamping plate due to vibration and load during long-term use. This not only affects the integrity of the building envelope but also requires additional manpower for regular inspection and re-fixing, increasing maintenance costs and safety hazards. Secondly, the structural design affects the appearance and usability: the screws in the device are completely exposed to the outside, which on the one hand damages the flatness and aesthetics of the sandwich panel surface, which contradicts the design requirements of modern prefabricated buildings for an integrated appearance. On the other hand, the protruding screws will interfere with the subsequent installation and sealing of the sandwich panel, reducing the practical application adaptability of the device. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a quick connection device for sandwich panels.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A quick connection device for sandwich panels includes: a receiving member and a connecting member respectively connected to the sides of two adjacent panels, the receiving member and the connecting member being positioned opposite each other, the connecting member being a square tubular structure, the receiving member being a U-shaped structure, and its opening being suitable for the connecting member to be inserted and engaged. The fixing mechanism comprises two fixing mechanisms. The docking component is fixedly embedded inside the receiving component through the fixing mechanism. Each fixing mechanism includes a fixing pin connected to the receiving component and a locking mechanism disposed inside the docking component. The end of the fixing pin is provided with a trapezoidal locking block. When the receiving component is embedded and engaged inside the docking component, the trapezoidal locking block extends into the docking component and is locked and limited by the locking mechanism, so that the receiving component and the docking component are in a fixed state. The release mechanism is provided in two parts, each corresponding to the fixed structure. The release mechanism is used to release the locking structure from the trapezoidal lock block. The transmission mechanism can drive each of the release mechanisms to operate synchronously.

[0007] Preferably, the fixing pin is a square tubular structure, and the side wall of the connecting member facing the receiving member has a connecting hole suitable for the end of the fixing pin to pass through. The side wall of the fixing pin away from the receiving member is provided with a trapezoidal locking block that slides through along the width direction of the fixing pin, and there are two trapezoidal locking blocks, which are respectively located on opposite side walls of the fixing pin. Each trapezoidal locking block has a limit ring connected to the side wall of the inner side of the fixing pin, and the limit ring is in contact with the inner wall of the fixing pin. The trapezoidal locking block has an inclined surface at the outer end of the fixing pin, and the inclined surface of the trapezoidal locking block faces away from the receiving member.

[0008] Furthermore: the inner width of the fixing pin is connected to two symmetrically arranged guide rods, which are located on both sides of the trapezoidal locking block. The two ends of the guide rods correspond to the two trapezoidal locking blocks. The two sides of the limiting ring are provided with sliding protrusions corresponding to the guide rods. The end of the guide rod passes through the corresponding sliding protrusion and is slidably connected to it. A spring plate is connected to the middle of the guide rod, and a spring is connected between the spring plate and the sliding protrusion.

[0009] Based on the aforementioned scheme: the locking mechanism includes two locking blocks located inside the docking member, a second guide rod connected to the locking blocks, and a second spring sleeved on the second guide rod; wherein, the two locking blocks are respectively located on opposite sides of the docking hole, and the two locking blocks correspond to two trapezoidal locking blocks, a first sliding shaft plate is connected to the inner wall of the docking member at a position corresponding to the second guide rod, the end of the second guide rod passes through and slides on the first sliding shaft plate, the two ends of the second spring are respectively connected to the locking block and the first sliding shaft plate, and a first limiting plate is provided at the end of the second guide rod away from the locking block, the first limiting plate being in movable contact with the first sliding shaft plate.

[0010] A preferred embodiment of the aforementioned solution is as follows: the release mechanism includes a telescopic rod disposed inside the docking member and a pusher connected to the end of the telescopic rod; wherein, the telescopic rod includes a sleeve connected to the inner wall of the docking member and a movable rod that is embedded and slides along the axial direction of the sleeve, the pusher is connected to the movable rod, the pusher includes a vertical part and two parallel pushers, the pushers are connected to the ends of the movable rod, one end of each of the two pushers is connected to the vertical part, and the other end is provided with a pressing part, the end of the pressing part is provided with a chamfer corresponding to the inclined surface of the trapezoidal locking block, and a docking channel suitable for the insertion of the end of the fixing pin is formed between the two pushers.

[0011] As a further aspect of the present invention: the release mechanism further includes a driving member connected to the vertical part, a transverse sliding rod connected to the inner wall of the docking part, and a slotted plate slidably connected to the transverse sliding rod; wherein, the driving member has a driving groove that passes through and is suitable for the slotted plate to slide through, the slotted plate has an oblique groove along the extension direction of the transverse sliding rod, a driving column that passes through the oblique groove is connected in the driving groove, and the driving column is slidably connected to the oblique groove; a threaded block is connected to the side of the slotted plate, and a threaded rod is rotatably connected to the inner wall of the docking part along the extension direction of the transverse sliding rod, the threaded rod passes through the threaded block and is threadedly connected to the threaded block.

[0012] Meanwhile, the transmission mechanism includes two symmetrically arranged gear assemblies and a drive gear; wherein, the two gear assemblies correspond to two release mechanisms respectively, and the gear assembly includes a driving gear and a driven gear. The driving gear is rotatably connected to the inner wall of the docking part through a rotating shaft one, and the driven gear is connected to the end of the threaded rod. The driving gear and the driven gear mesh. The drive gear is rotatably connected to the inner wall of the docking part through a rotating shaft two. One end of the rotating shaft two passes through the side wall of the docking part and is connected to an input spline. The input spline has a spline groove. The drive gear meshes with the driving gear.

[0013] As a preferred embodiment of the present invention: guide rails are connected to both outer walls of the fixing pin; a fixed track is connected to the side of the docking hole near the interior of the docking member; a track groove suitable for sliding of the guide rail is formed on the fixed track along the moving direction of the fixing pin; a fixed bracket is connected to the inner wall of the docking member; a sliding protrusion two is provided on the end of the fixed bracket away from the inner wall of the docking member; a pressing rod slides through the sliding protrusion two along the extending direction of the guide rail; a pressing plate is connected to the end of the pressing rod near the docking hole; the pressing plate is in movable contact with the end of the guide rail; a spring three is connected between the pressing plate and the sliding protrusion two; and a limit plate two is connected to the other end of the pressing rod.

[0014] Meanwhile, the inner walls on both sides of the receiving component are provided with docking rails, and the outer walls on both sides of the docking component are provided with docking grooves corresponding to the docking rails. A buffer pad is connected inside the docking rail. Mounting holes are provided on both the receiving component and the docking component, and the receiving component and the docking component are respectively mounted on the plate by bolts.

[0015] As a preferred embodiment of the present invention: the driving gear, the active gear, and the driven gear have the same structure, each consisting of a first gear plate, a second gear plate, and a hollow cylinder. The first gear plate is fixed to the outer wall of the hollow cylinder, and the second gear plate is rotatably connected to the outer wall of the hollow cylinder.

[0016] Furthermore, the side wall of the second toothed piece is provided with an arc-shaped groove, and the side wall of the first toothed piece is fixed with a limiting post that is movably inserted into the inner wall of the arc-shaped groove. The inner wall of the arc-shaped groove is fixed with a metal spring plate, which elastically contacts and cooperates with the outer wall of the limiting post.

[0017] The inner wall of the arc-shaped groove has multiple sets of slots, and the metal spring plate is inserted into the inner wall of the slot.

[0018] The inner wall of the toothed plate has multiple threaded holes, and the inner wall of the hollow cylinder has through holes corresponding to the number and position of the threaded holes. Each set of through holes and the inner wall of the threaded holes are fitted with a stud.

[0019] The beneficial effects of this invention are as follows: 1. This invention employs a two-way trapezoidal locking block and locking block interlocking structure, combined with the pre-tightening force of spring one, to form a one-way locking mechanism. It is further enhanced by the sliding limit of the guide rails and fixed track on both sides of the fixed pin, as well as the axial pre-tightening brought by the extrusion rod and spring three, to construct a triple fixing structure of transverse locking, longitudinal limiting and axial pre-tightening. This avoids stress concentration at contact, effectively resists the weight load and vibration of the sandwich panel, prevents detachment during long-term use, eliminates the need for frequent inspection and maintenance, and is suitable for high-pressure scenarios such as industrial plants and large prefabricated buildings, ensuring the integrity of the building envelope.

[0020] 2. The fixing mechanism in this invention, through the elastic reset design of spring one and spring two, ensures that the trapezoidal locking block and locking block can automatically return to their initial positions after installation and disassembly, resulting in strong structural stability, reusability, and reduced usage costs.

[0021] 3. This invention integrates the fixing pin, locking mechanism, releasing mechanism, and transmission mechanism within the receiving and docking parts, and hides the input spline within the side wall of the docking part. With no exposed screws, bolts, or other components, it ensures the flatness and aesthetics of the sandwich panel enclosure, meeting the integrated design requirements of modern prefabricated buildings. Furthermore, the absence of exposed protruding structures avoids interference with subsequent installation and sealing of the sandwich panel, enhancing the device's adaptability to various construction scenarios.

[0022] 4. The docking parts and receiving parts in this invention are automatically locked during the fitting process. There is no need to manually tighten the screws or bolts. The fixing can be completed simply by pushing the sandwich plate to fit the receiving parts and docking parts together. This simplifies the construction steps, reduces the difficulty of high-altitude operations, and meets the core requirements of efficient construction of prefabricated buildings.

[0023] 5. The transmission mechanism in this invention achieves synchronous operation of the two release mechanisms through a gear set, ensuring uniform force during unlocking and avoiding structural deformation or damage to the edge of the sandwich panel caused by unilateral pulling; the pressing part of the release mechanism precisely matches the inclined surface of the trapezoidal lock block, resulting in a smooth unlocking process, high disassembly efficiency, and the device can be quickly reset after disassembly without affecting reuse.

[0024] 6. The present invention sets a complete gear as a two-piece structure consisting of a gear plate 1 and a gear plate 2. The gear plate 1 and gear plate 2 are made to rotate relative to each other by the elastic force of the metal spring plate on the limiting post. This allows one side of gear plate 1 and the other side of gear plate 2 to form a complete gear meshing teeth, thereby elastically compensating for the meshing clearance, ensuring reliable transmission, and preventing jamming. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the fixing mechanism, releasing mechanism, and transmission mechanism of a quick connection device for sandwich panels proposed in this invention. Figure 2 This is a schematic diagram of the receiving and connecting parts of the quick connection device for sandwich panels proposed in this invention during use; Figure 3 This is a schematic diagram of the external structure of the receiving and connecting parts of a sandwich panel quick connection device proposed in this invention. Figure 4 This is a schematic diagram of the separation structure of the receiving component and the docking component of a quick connection device for sandwich panels proposed in this invention; Figure 5 This invention proposes a quick connection device for sandwich panels. Figure 3 Cross-sectional structural diagram; Figure 6 This invention proposes a quick connection device for sandwich panels. Figure 1 Top view; Figure 7 This invention proposes a quick connection device for sandwich panels. Figure 1 Right view; Figure 8 This is an exploded view of a partial structure of a sandwich panel quick-connection device proposed in this invention. Figure 1 ; Figure 9 This invention proposes a quick connection device for sandwich panels. Figure 1 Schematic diagram of the middle section Figure 1 ; Figure 10 This invention proposes a quick connection device for sandwich panels. Figure 1 Schematic diagram of the middle section Figure 2 ; Figure 11This is an exploded view of a partial structure of a sandwich panel quick-connection device proposed in this invention. Figure 2 ; Figure 12 This is a schematic diagram of the gear structure in Embodiment 2 of the quick connection device for sandwich panels proposed in this invention; Figure 13 This invention proposes a quick connection device for sandwich panels. Figure 12 A magnified structural diagram of part A in the diagram; Figure 14 This is an exploded view of the gears in Embodiment 2 of the quick connection device for sandwich panels proposed in this invention.

[0026] In the diagram: 1. Receiving part; 2. Connecting part; 3. Fixing pin; 4. Trapezoidal locking block; 5. Connecting hole; 6. Limiting ring; 7. Guide rod one; 8. Sliding protrusion one; 9. Spring plate one; 10. Spring one; 11. Locking block; 12. Guide rod two; 13. Sliding shaft plate one; 14. Limiting plate one; 15. Pushing part; 16. Sleeve; 17. Movable rod; 18. Vertical part; 19. Pushing part; 20. Pressing part; 21. Connecting channel; 22. Driving part; 23. Lateral sliding rod; 24. Groove plate; 25. Inclined groove; 26. Driving column; 27. Driving groove; 28. Threaded block; 29. ​​Threaded rod; 30. Drive gear; 3 1. Driving gear; 32. Driven gear; 33. Shaft 1; 34. Shaft 2; 35. Input spline; 36. Guide rail; 37. Fixed rail; 38. Rail groove; 39. Fixed bracket; 40. Sliding protrusion 2; 41. Extrusion rod; 42. Extrusion plate; 43. Spring 3; 44. Limiting plate 2; 45. Connecting rail; 46. Connecting groove; 47. Buffer pad; 48. Mounting hole; 49. Spline groove; 50. Spring 2; 51. Gear 1; 52. Gear 2; 53. Hollow cylinder; 54. Arc groove; 55. Limiting post; 56. Metal spring plate; 57. Slot; 58. Through hole; 59. Stud; 60. Threaded hole. Detailed Implementation

[0027] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] Example 1: A quick-connect device for sandwich panels, such as Figures 1-11 As shown, it includes receiving component 1, docking component 2, fixing mechanism, releasing mechanism, and transmission mechanism: The receiving component 1 and the docking component 2 are respectively connected to the sides of two adjacent plates, which refer to sandwich panels. The receiving component 1 and the docking component 2 are positioned opposite each other. The docking component 2 is a square tubular structure, and the receiving component 1 is a U-shaped structure with an opening suitable for the docking component 2 to be inserted and engaged. There are two fixing mechanisms. The docking component 2 is fixedly embedded in the receiving component 1 through the fixing mechanisms. Each fixing mechanism includes a fixing pin 3 connected to the receiving component 1 and a locking mechanism set in the docking component 2. The end of the fixing pin 3 is provided with a trapezoidal locking block 4. When the receiving component 1 is embedded and engaged in the docking component 2, the trapezoidal locking block 4 extends into the docking component 2 and is locked and limited by the locking mechanism, so that the receiving component 1 and the docking component 2 are fixed. There are two release mechanisms, which are respectively corresponding to the fixing structure. The release mechanisms are used to release the locking state of the locking structure on the trapezoidal locking block 4. There is a transmission mechanism that can drive each release mechanism to move synchronously.

[0030] To ensure that the trapezoidal locking block 4 can be restored to its initial position after each use for the next use; the fixing pin 3 is a square tubular structure. The side wall of the connecting part 2 facing the receiving part 1 has a connecting hole 5 suitable for the end of the fixing pin 3 to pass through. The side wall of the fixing pin 3 away from the receiving part 1 is provided with a trapezoidal locking block 4 that slides through along the width direction of the fixing pin 3. There are two trapezoidal locking blocks 4, which are located on opposite side walls of the fixing pin 3. Each trapezoidal locking block 4 is connected to a limit ring 6 on the side wall inside the fixing pin 3. The limit ring 6 is in contact with the inner wall of the fixing pin 3. The end of the trapezoidal locking block 4 outside the fixing pin 3 has an inclined surface, which faces away from the receiving part 1. Two symmetrically arranged guide rods 7 are connected along the inner width of the fixing pin 3. The two guide rods 7 are located on both sides of the trapezoidal locking block 4. The two ends of the guide rods 7 correspond to the two trapezoidal locking blocks 4 respectively. The two sides of the limiting ring 6 are provided with sliding protrusions 8 corresponding to the guide rods 7. The end of the guide rod 7 passes through the corresponding sliding protrusion 8 and is slidably connected to the sliding protrusion 8. A spring plate 9 is connected to the middle of the guide rod 7. A spring 10 is connected between the spring plate 9 and the sliding protrusion 8. In order to ensure that the fixing pin 3 can stably connect with the docking part 2 after each insertion into the docking hole 5, guide slide rails 36 are connected to both outer walls of the fixing pin 3. A fixing track 37 is connected to the side of the docking hole 5 near the inside of the docking part 2. The fixing track 37 has a track groove 38 that is suitable for sliding of the guide slide rail 36 along the moving direction of the fixing pin 3.

[0031] The inner walls on both sides of the receiving part 1 are provided with docking rails 45, and the outer walls on both sides of the docking part 2 are provided with docking grooves 46 corresponding to the docking rails 45. A buffer pad 47 is connected inside the docking rails 45. Both the receiving part 1 and the docking part 2 are provided with mounting holes 48. In use, two plates are selected at appropriate positions, and the receiving part 1 and the docking part 2 are respectively installed on the plates with bolts. The bolts pass through the mounting holes 48 to achieve the purpose of fixing the docking part 2 or the receiving part 1.

[0032] When the end of the fixed pin 3 connected to the trapezoidal locking block 4 passes through the docking hole 5 and enters the docking part 2, in order to facilitate the limiting of the trapezoidal locking block 4, the locking mechanism includes two locking blocks 11 located inside the docking part 2, a second guide rod 12 connected to the locking block 11, and a second spring 50 sleeved on the second guide rod 12; wherein, the two locking blocks 11 are located on opposite sides of the docking hole 5, and the two locking blocks 11 correspond to the two trapezoidal locking blocks 4. A sliding shaft plate 13 is connected to the inner wall of the docking part 2 at the position corresponding to the second guide rod 12. The end of the second guide rod 12 passes through and slides on the sliding shaft plate 13. The two ends of the second spring 50 are respectively connected to the locking block 11 and the sliding shaft plate 13. A limiting plate 14 is provided at the end of the second guide rod 12 away from the locking block 11. The limiting plate 14 is in movable contact with the sliding shaft plate 13.

[0033] In the above structure, a two-way trapezoidal locking block 4 and a locking block 11 are engaged. Combined with the preload of spring 10, a one-way locking structure is formed between the locking block 11 and the trapezoidal locking block 4. This solves the problem of easy separation under high load caused by single-sided clamping and contact stress concentration in the prior art. Even when facing heavy sandwich panels, it can ensure that it will not loosen for a long time and does not require frequent inspection and maintenance.

[0034] Furthermore, it achieves automatic locking during the fitting process, eliminating the need for manual tightening of screws or bolts. Simply push the sandwich panel to complete the fitting, greatly simplifying the construction steps and meeting the high-efficiency construction requirements of prefabricated buildings. At the same time, the guide rail 36, docking rail 45 and other structures ensure installation accuracy and reduce the difficulty of high-altitude operations.

[0035] To solve the problem of the fixed state between the docking part 2 and the receiving part 1, the release mechanism mentioned above includes a telescopic rod inside the docking part 2 and a pusher 15 connected to the end of the telescopic rod. The telescopic rod includes a sleeve 16 connected to the inner wall of the docking part 2 and a movable rod 17 that is axially embedded and slidable along the sleeve 16. The pusher 15 is connected to the movable rod 17. The pusher 15 includes a vertical part 18 and two parallel pushers 19. The pushers 19 are connected to the ends of the movable rod 17. One end of each of the two pushers 19 is connected to the vertical part 18, and the other end is provided with a pressing part 20. The end of the pressing part 20 is provided with a chamfer corresponding to the upper inclined surface of the trapezoidal locking block 4. A docking channel 21 suitable for the insertion of the end of the fixing pin 3 is formed between the two pushers 19. The release mechanism also includes a drive member 22 connected to the vertical part 18, a transverse sliding rod 23 connected to the inner wall of the docking member 2, and a slotted plate 24 slidably connected to the transverse sliding rod 23; wherein, the drive member 22 has a drive groove 27 that passes through and is suitable for the slotted plate 24 to slide through, the slotted plate 24 has an oblique groove 25 along the extension direction of the transverse sliding rod 23, the drive column 26 that passes through the oblique groove 25 is connected in the drive groove 27, the drive column 26 and the oblique groove 25 are slidably connected, the side of the slotted plate 24 is connected to a threaded block 28, and the inner wall of the docking member 2 is rotatably connected to a threaded rod 29 along the extension direction of the transverse sliding rod 23, the threaded rod 29 passes through the threaded block 28 and is threadedly connected to the threaded block 28.

[0036] A fixed bracket 39 is connected to the inner wall of the docking part 2. A sliding protrusion 40 is provided on the end of the fixed bracket 39 away from the inner wall of the docking part 2. A pressing rod 41 slides through the sliding protrusion 40 along the extension direction of the guide rail 36. A pressing plate 42 is connected to the end of the pressing rod 41 near the docking hole 5. The pressing plate 42 is in contact with the end of the guide rail 36. A spring 43 is connected between the pressing plate 42 and the sliding protrusion 40. A limit plate 44 is connected to the other end of the pressing rod 41.

[0037] To facilitate the operator's synchronous rotation of the threaded rods 29 on the two release mechanisms, the aforementioned transmission mechanism includes two symmetrically arranged gear assemblies and a drive gear 30. Each gear assembly corresponds to one of the two release mechanisms. The gear assembly includes a driving gear 31 and a driven gear 32. The driving gear 31 is rotatably connected to the inner wall of the docking member 2 via a rotating shaft 33. The driven gear 32 is connected to the end of the threaded rod 29, and the driving gear 31 meshes with the driven gear 32. The drive gear 30 is rotatably connected to the inner wall of the docking member 2 via a rotating shaft 34. One end of the rotating shaft 34 penetrates the side wall of the docking member 2 and is connected to an input spline 35. The input spline 35 has a spline groove 49. The drive gear 30 meshes with the driving gear 31. The transmission mechanism achieves synchronous operation of the two release mechanisms through the gear set, ensuring uniform force during unlocking and preventing structural deformation or damage to the sandwich panel edges caused by unilateral pulling. The unlocking process is smooth and controllable, resulting in high disassembly efficiency.

[0038] Furthermore, the input spline 35 is hidden inside the side wall of the docking part 2, and the fixing pin 3, locking mechanism, release mechanism and transmission mechanism are all built into the receiving part 1 and the docking part 2. There are no external exposed parts, which not only ensures the flatness and beauty of the sandwich panel enclosure surface, but also avoids the interference of exposed structures with subsequent sealing and decorative layer construction, solving the problems of messy appearance and limited use of existing technologies.

[0039] The working principle and usage process of this invention: The construction workers align the two sandwich panels to be connected, aligning the U-shaped opening of the receiving component 1 with the end of the connecting component 2. They then slowly push the sandwich panels, causing the receiving component 1 to move closer to the connecting component 2. At this point, the connecting track 45 on the inner wall of the receiving component 1 precisely matches the connecting groove 46 on the outer wall of the connecting component 2. The buffer pad 47 inside the track is slightly compressed, providing a buffer and anti-collision function. Simultaneously, the fixing pin 3 on the receiving component 1 aligns with the connecting hole 5 on the side wall of the connecting component 2. The guide rails 36 on both sides of the fixing pin 3 are embedded in the track groove 38 inside the fixing track 37 inside the connecting hole 5, sliding smoothly along the groove to ensure that the fixing pin 3 and the connecting hole 5 are coaxially aligned, avoiding installation misalignment. As the receiving component 1 continues to advance, the end of the fixing pin 3 penetrates the docking hole 5 and enters the interior of the docking component 2. The trapezoidal locking blocks 4 (with their inclined surfaces facing away from the receiving component 1) extending from both sides of the fixing pin 3 first contact the locking blocks 11 inside the docking component 2. The inclined surfaces of the trapezoidal locking blocks 4 and the ends of the locking blocks 11 exert a squeezing force, pushing the two locking blocks 11 to separate to both sides along the guide rod 12. The spring 50 sleeved on the guide rod 12 is compressed, reserving space for subsequent locking. During this process, the guide rod 7 inside the fixing pin 3 restricts the sliding direction of the trapezoidal locking blocks 4. The sliding protrusion 8 closely cooperates with the guide rod 7 to ensure that the trapezoidal locking blocks 4 only move along the width direction of the fixing pin 3, avoiding skewness. When the trapezoidal locking block 4 is fully inserted into the docking part 2 (i.e., the receiving part 1 and the docking part 2 are fully engaged), the locking block 11 is no longer squeezed by the trapezoidal locking block 4. The compressed spring 50 quickly returns to its original position, pushing the two locking blocks 11 to move towards the middle and engage with the side vertical surface of the trapezoidal locking block 4, forming a one-way limit, preventing the fixing pin 3 from retracting in the opposite direction, and the receiving part 1 and the docking part 2 are firmly locked. At the same time, the spring 10 in the fixing pin 3 continuously applies an outward preload to the trapezoidal locking block 4 through the spring plate 9, the sliding protrusion 8, and the limiting ring 6 to prevent vibration from causing loosening. On the fixing bracket 39 in the docking part 2, the pressing rod 41 pushes the pressing plate 42 tightly against the end of the guide rail 36 through the spring 43, further limiting the axial displacement of the fixing pin 3, forming a dual fixing effect of locking mechanism and pressing preload.

[0040] When it is necessary to disassemble the sandwich panel, the construction personnel insert an external driving tool (such as a wrench or a special spline wrench) into the input spline 35 groove on the side wall of the mating part 2, and rotate the tool to drive the rotating shaft 34 to rotate, which in turn drives the drive gear 30 fixed on the rotating shaft 34 to rotate. The drive gear 30 simultaneously meshes with two sets of symmetrically distributed driving gears 31, driving the driving gears 31 to rotate synchronously through the rotating shaft 33. The driving gears 31 then mesh with the driven gears 32, transmitting torque to the threaded rod 29 of the release mechanism, realizing the synchronous action of the two sets of release mechanisms. When the threaded rod 29 rotates, the threaded block 28 connected to it drives the grooved plate 24 to move linearly along the transverse sliding rod 23. The inclined groove 25 on the grooved plate 24, through the driving column 26 passing through it, pulls the driving member 22 to move laterally, thereby driving the movable rod 17 of the telescopic rod to extend axially along the sleeve 16. The pushing member 15 at the pushing end of the movable rod 17 moves towards the fixed pin 3. The two pushing parts 19 of the pushing member 15 are symmetrically wrapped around the end of the fixed pin 3. The chamfer of the pressing part 20 fits against the inclined surface of the trapezoidal locking block 4. As the pushing member 15 continues to advance, the chamfer generates a pressing force on the inclined surface, forcing the trapezoidal locking block 4 to contract inward into the fixed pin 3, compressing the spring 10. When the trapezoidal locking block 4 retracts to completely disengage from the limiting range of the locking block 11, the restraining effect of the locking mechanism is released. At this time, the construction personnel can pull the sandwich plate in the opposite direction, and the receiving part 1 and the docking part 2 will smoothly separate along the docking track 45 and the guide slide rail 36. After separation, the spring 10 in the fixing pin 3 returns to its original position, pushing the trapezoidal locking block 4 to extend back to its initial position; the release mechanism then rotates the input spline 35 in the opposite direction, causing the threaded rod 29 to rotate in the opposite direction, and the slot plate 24, the driving part 22, and the telescopic rod to reset in sequence, and the entire device returns to the installation-ready state and can be reused.

[0041] Example 2: A quick-connection device for sandwich panels, in embodiment 1, relies on the meshing of the drive gear 30, the driving gear 31, and the driven gear 32 for synchronous movement. However, during transmission, wear can cause meshing gaps, which can lead to asynchronous transmission and cause the device to jam. Therefore, in conjunction with... Figure 12 , Figure 13 , Figure 14 In this embodiment, the following improvements are made to the drive gear 30, the driving gear 31, and the driven gear 32 in Embodiment 1: The drive gear 30, the driving gear 31, and the driven gear 32 have the same structure, each consisting of a first toothed plate 51, a second toothed plate 52, and a hollow cylinder 53. The first toothed plate 51 is fixed to the outer wall of the hollow cylinder 53, and the second toothed plate 52 is rotatably connected to the outer wall of the hollow cylinder 53.

[0042] Furthermore, the side wall of the second toothed piece 52 is provided with an arc-shaped groove 54, and the side wall of the first toothed piece 51 is fixed with a limiting post 55 that is movably inserted into the inner wall of the arc-shaped groove 54. The inner wall of the arc-shaped groove 54 is fixed with a metal spring plate 56, and the metal spring plate 56 is elastically contacted and fitted with the outer wall of the limiting post 55.

[0043] The inner wall of the arc-shaped groove 54 has multiple sets of slots 57, and the metal spring plate 56 is inserted into the inner wall of the slot 57.

[0044] The inner wall of the toothed plate 51 is provided with multiple threaded holes 60, and the inner wall of the hollow cylinder 53 is provided with through holes 58 corresponding to the number and position of the threaded holes 60. Each set of through holes 58 and the inner wall of the threaded holes 60 are fitted with a stud 59.

[0045] This device, by configuring a complete gear as a two-piece structure consisting of a first gear piece 51 and a second gear piece 52, allows the first gear piece 51 and the second gear piece 52 to have a tendency to rotate relative to each other due to the elastic force of the metal spring plate 56 on the limiting post 55. This enables one side of the first gear piece 51 and the other side of the second gear piece 52 to form a complete gear meshing teeth, thereby elastically compensating for meshing clearance, ensuring reliable transmission, and preventing jamming. The above description is merely 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 technical scope 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 quick-connect device for sandwich panels, characterized in that, include: The receiving part (1) and the docking part (2) are respectively connected to the sides of two adjacent plates. The receiving part (1) and the docking part (2) are positioned opposite each other. The docking part (2) is a square tubular structure, and the receiving part (1) is a U-shaped structure. Its opening is suitable for the docking part (2) to be embedded and engaged. The fixing mechanism is provided in two parts. The docking part (2) is fixedly embedded in the receiving part (1) through the fixing mechanism. Each fixing mechanism includes a fixing pin (3) connected to the receiving part (1) and a locking mechanism provided in the docking part (2). The end of the fixing pin (3) is provided with a trapezoidal locking block (4). When the receiving part (1) is embedded and engaged in the docking part (2), the trapezoidal locking block (4) extends into the docking part (2) and is locked and limited by the locking mechanism, so that the receiving part (1) and the docking part (2) form a fixed state. The release mechanism is provided in two parts, each corresponding to the fixed structure. The release mechanism is used to release the locking state of the locking structure on the trapezoidal lock block (4). The transmission mechanism can drive each of the release mechanisms to operate synchronously.

2. The quick-connect device for sandwich panels according to claim 1, characterized in that, The fixing pin (3) is a square tubular structure. The side wall of the docking part (2) facing the receiving part (1) is provided with a docking hole (5) suitable for the end of the fixing pin (3) to pass through. The side wall of the fixing pin (3) away from the receiving part (1) is provided with a trapezoidal locking block (4) that slides through the width direction of the fixing pin (3). There are two trapezoidal locking blocks (4). The two trapezoidal locking blocks (4) are located on opposite side walls of the fixing pin (3). Each trapezoidal locking block (4) is connected to a limiting ring (6) on the side wall inside the fixing pin (3). The limiting ring (6) is in contact with the inner wall of the fixing pin (3). The trapezoidal locking block (4) is provided with an inclined surface on the end outside the fixing pin (3). The inclined surface on the trapezoidal locking block (4) faces away from the receiving part (1).

3. The quick-connect device for sandwich panels according to claim 2, characterized in that, The fixing pin (3) has two symmetrically arranged guide rods (7) connected along its width direction. The two guide rods (7) are located on both sides of the trapezoidal locking block (4). The two ends of the guide rods (7) correspond to the two trapezoidal locking blocks (4). The limiting ring (6) has sliding protrusions (8) on both sides corresponding to the guide rods (7). The end of the guide rod (7) passes through the corresponding sliding protrusion (8) and is slidably connected to the sliding protrusion (8). A spring plate (9) is connected to the middle of the guide rod (7). A spring (10) is connected between the spring plate (9) and the sliding protrusion (8).

4. The quick-connect device for sandwich panels according to claim 2, characterized in that, The locking mechanism includes two locking blocks (11) located inside the docking part (2), a guide rod (12) connected to the locking block (11), and a spring (50) sleeved on the guide rod (12). The two locking blocks (11) are located on opposite sides of the docking hole (5), and the two locking blocks (11) correspond to the two trapezoidal locking blocks (4). A sliding shaft plate (13) is connected to the inner wall of the docking part (2) at a position corresponding to the guide rod (12). The end of the guide rod (12) passes through and slides on the sliding shaft plate (13). The two ends of the spring (50) are connected to the locking block (11) and the sliding shaft plate (13) respectively. A limiting plate (14) is provided at the end of the guide rod (12) away from the locking block (11). The limiting plate (14) is in contact with the sliding shaft plate (13).

5. The quick-connect device for sandwich panels according to claim 1, characterized in that, The release mechanism includes a telescopic rod located inside the docking member (2) and a pusher (15) connected to the end of the telescopic rod; wherein, the telescopic rod includes a sleeve (16) connected to the inner wall of the docking member (2) and a movable rod (17) axially embedded and sliding along the sleeve (16), the pusher (15) is connected to the movable rod (17), the pusher (15) includes a vertical part (18) and two parallel pushers (19), the pushers (19) are connected to the end of the movable rod (17), one end of each of the two pushers (19) is connected to the vertical part (18), and the other end is provided with a pressing part (20), the end of the pressing part (20) is provided with a chamfer corresponding to the upper inclined surface of the trapezoidal locking block (4), and a docking channel (21) suitable for the insertion of the end of the fixing pin (3) is formed between the two pushers (19).

6. A quick-connect device for sandwich panels according to claim 5, characterized in that, The release mechanism further includes a drive member (22) connected to the vertical part (18), a transverse sliding rod (23) connected to the inner wall of the docking part (2), and a groove plate (24) slidably connected to the transverse sliding rod (23); wherein, the drive member (22) is provided with a drive groove (27) that passes through and is suitable for the groove plate (24) to slide through, and the groove plate (24) is provided with an oblique groove (25) along the extension direction of the transverse sliding rod (23), and a drive column (26) that passes through the oblique groove (25) is connected in the drive groove (27), and the drive column (26) and the oblique groove (25) are slidably connected; A threaded block (28) is connected to the side of the groove plate (24), and a threaded rod (29) is rotatably connected to the inner wall of the mating part (2) along the extension direction of the transverse sliding rod (23). The threaded rod (29) passes through the threaded block (28) and is threadedly connected to the threaded block (28).

7. A quick-connect device for sandwich panels according to claim 6, characterized in that, The transmission mechanism includes two symmetrically arranged gear assemblies and a drive gear (30); wherein, the two gear assemblies correspond to two release mechanisms respectively. The gear assembly includes a driving gear (31) and a driven gear (32). The driving gear (31) is rotatably connected to the inner wall of the docking part (2) through a rotating shaft (33). The driven gear (32) is connected to the end of the threaded rod (29). The driving gear (31) meshes with the driven gear (32). The drive gear (30) is rotatably connected to the inner wall of the docking part (2) through a rotating shaft (34). One end of the rotating shaft (34) passes through the side wall of the docking part (2) and is connected to an input spline (35). The input spline (35) has a spline groove (49). The drive gear (30) meshes with the driving gear (31).

8. A quick-connect device for sandwich panels according to claim 2, characterized in that, Guide rails (36) are connected to both outer walls of the fixing pin (3). A fixed track (37) is connected to the side of the docking hole (5) near the inside of the docking part (2). A track groove (38) suitable for the sliding of the guide rail (36) is opened on the fixed track (37) along the moving direction of the fixing pin (3). A fixed bracket (39) is connected to the inner wall of the docking part (2). A sliding protrusion (40) is provided on the end of the fixed bracket (39) away from the inner wall of the docking part (2). A pressing rod (41) slides through the sliding protrusion (40) along the extension direction of the guide rail (36). A pressing plate (42) is connected to the end of the pressing rod (41) near the docking hole (5). The pressing plate (42) is in contact with the end of the guide rail (36). A spring (43) is connected between the pressing plate (42) and the sliding protrusion (40). A limit plate (44) is connected to the other end of the pressing rod (41).

9. A quick-connect device for sandwich panels according to claim 1, characterized in that, The receiving part (1) has a docking track (45) on both sides of its inner wall, and the docking part (2) has a docking groove (46) on both sides of its outer wall corresponding to the docking track (45). A buffer pad (47) is connected inside the docking track (45). The receiving part (1) and the docking part (2) are both provided with mounting holes (48). The receiving part (1) and the docking part (2) are respectively installed on the plate by bolts.

10. A quick-connect device for sandwich panels according to claim 7, characterized in that, The drive gear (30), the driving gear (31), and the driven gear (32) have the same structure. They are all composed of a first gear piece (51), a second gear piece (52), and a hollow cylinder (53). The first gear piece (51) is fixed to the outer wall of the hollow cylinder (53), and the second gear piece (52) is rotatably connected to the outer wall of the hollow cylinder (53). Furthermore, the side wall of the second toothed piece (52) is provided with an arc-shaped groove (54), and the side wall of the first toothed piece (51) is fixed with a limiting post (55) that is movably inserted into the inner wall of the arc-shaped groove (54). The inner wall of the arc-shaped groove (54) is fixed with a metal spring plate (56), and the metal spring plate (56) is elastically contacted and fitted with the outer wall of the limiting post (55). The inner wall of the arc groove (54) has multiple sets of slots (57), and the metal spring plate (56) is inserted into the inner wall of the slot (57); the inner wall of the toothed plate (51) has multiple threaded holes (60), and the inner wall of the hollow cylinder (53) has through holes (58) that correspond to the number of threaded holes (60). Each set of through holes (58) and the inner wall of the threaded holes (60) are fitted with a stud (59).

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