A template connecting device for curved fair-faced concrete structure with quick loading and unloading

Abstract

The application discloses a template connecting device for quick loading and unloading of a curved fair-faced concrete structure, and relates to the technical field of building.The device comprises a rope fixing assembly, the rope fixing assembly and a right fishbone type composite straight toothed rod are connected through a rope, the fishbone type composite straight toothed rod is connected with two core self-locking devices at the top, the fishbone type composite straight toothed rod is engaged with a manual gear device at the bottom, and the left side of the core self-locking device is connected with a tooth block fixing device.The gear part of the tooth block fixing device, the core self-locking device, the fishbone type composite straight toothed rod and the manual gear device are all located inside a self-locking box.The application eliminates the joint of adjacent templates by applying pre-tightening force, so that the template connection is more firm and reliable, and the pouring quality of the space curved fair-faced concrete structure is ensured;one-way pre-tightening self-locking and unlocking and template dismounting are realized through a simple and efficient mechanical device, the construction efficiency is remarkably improved, the construction period is shortened, and the cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of building technology, and in particular to a quick-assembly and disassembly formwork connection device suitable for curved fair-faced concrete structures. Background Technology

[0002] Fair-faced concrete refers to concrete that is cast in one go, with the original cast surface used directly as the finish. It boasts advantages such as a smooth, even surface, no noticeable color difference, sharp edges, and no damage. By eliminating the need for plastering and finishing layers during construction, fair-faced concrete reduces construction dust and waste, decreases the use of decorative materials, saves labor and equipment costs, and lowers overall project costs, resulting in significant economic benefits and widespread application in engineering projects.

[0003] With the rapid development of the construction industry, the requirements for the appearance of projects are increasing, and the frequency of curved surface structure design is increasing. The corresponding supporting formwork forms a spatial curved surface with the structure, and the splicing joint between the formwork is one of the important factors to ensure the quality of fair-faced concrete pouring.

[0004] Conventional concrete formwork support systems typically use nails, support frames, or the interlocking force between formwork panels to achieve the required reinforced concrete structural dimensions. While these systems can secure adjacent formwork panels, in actual construction, concrete leakage occurs at the joints, joints become uneven, and the concrete surface near the joints is rough. Furthermore, formwork disassembly is inefficient and unsuitable for fair-faced concrete where high construction quality is required. Therefore, there is an urgent need to develop a quick-assembly and disassembly formwork connection device suitable for curved fair-faced concrete structures. Summary of the Invention

[0005] Based on the above problems, the purpose of this invention is to provide a quick-loading and unloading formwork connection device suitable for curved fair-faced concrete structures. The technical solution adopted by this invention is as follows:

[0006] This invention proposes a quick-assembly and disassembly formwork connection device suitable for curved fair-faced concrete structures, including a rope fixing assembly. The rope fixing assembly and a fishbone-shaped composite straight toothed rod on the right side are connected by ropes. The fishbone-shaped composite straight toothed rod is engaged with two core self-locking devices at the top and with a manual gear device at the bottom. The core self-locking devices are engaged with a tooth block fixing device on the left side. The gear portions of the tooth block fixing device, the core self-locking device, the fishbone-shaped composite straight toothed rod, and the manual gear device are all located inside the self-locking housing.

[0007] Furthermore, the rope fixing assembly includes a rope fixing assembly pin rod, which vertically passes through the first ear seat, and the left side of the first ear seat is fixedly connected to the transition plate; the upper and lower sides of the transition plate are fixedly connected to the first connecting fixing plates, and the first connecting fixing plates are provided with small round holes.

[0008] Furthermore, the self-locking housing includes a base plate, which is fixedly connected to its upper cover plate and surrounding side plates to form the housing. The base plate has two parallelogram-shaped channels, and the cover plate has two parallelogram-shaped slots. The two parallelogram-shaped slots correspond one-to-one with the two parallelogram-shaped channels. The core self-locking device is slidably engaged in the parallelogram-shaped slots and channels on its front and rear sides, respectively. The base plate has two spaced-apart horizontal reinforcing ribs located below the parallelogram-shaped channels and arranged in a straight line. The fishbone-shaped composite straight toothed rod moves forward along the top surface of the horizontal reinforcing ribs. Second connecting plates are fixedly connected to the upper and lower sides of the base plate, and the second connecting plates have small round holes.

[0009] Furthermore, the core self-locking device includes a guide reset movable block. The guide reset movable block has protrusions on its front and rear sides, which are slidably engaged with the parallelogram slot and the parallelogram channel, respectively. A through-hole is formed in the guide reset movable block in the vertical direction. A self-locking tooth block reset spring is installed within the hollow hole. The upper end of the self-locking tooth block reset spring is connected to the side plate, and the lower end is connected to the self-locking tooth block. The self-locking tooth block is rotatably connected to a self-locking pin. A pin hole is formed on the front side of the guide reset movable block, and the self-locking pin is fixedly connected in the pin hole, with its end exposed outside the pin hole. A limiting block is provided at the lower left end of the guide reset movable block, abutting against the left side of the self-locking tooth block. A recess is provided on the left side of the guide reset movable block, which engages with the tooth block fixing device.

[0010] Furthermore, the toothed block fixing device includes a snap-on plate channel block, which is fixedly connected to the base plate. The snap-on plate channel block has a square hollow channel, in which a snap-on plate return spring and a snap-on plate are disposed. One end of the snap-on plate return spring is connected to the hollow channel, and the other end of the snap-on plate return spring is connected to the snap-on plate. The snap-on plate engages with the notch.

[0011] Furthermore, the fishbone-shaped composite spur gear includes a rack, the tooth groove surface of which meshes with the manual gear device below. The back of the rack is provided with a plurality of reverse teeth along its length, and a reverse tooth groove is formed between any two adjacent reverse teeth. The reverse tooth groove engages with the self-locking tooth block. The tail of the rack is provided with a second lug, and a fishbone-shaped composite gear pin is provided on the second lug. The fishbone-shaped composite gear pin is connected to the rope.

[0012] Furthermore, the manual gear device includes a rotating shaft rotatably connected to the cover plate, a circular gear at the inner end of the rotating shaft meshing with the rack, and a manual turntable at the outer end of the rotating shaft.

[0013] Furthermore, when the device is used for connection on the protruding side of the template, the rope passes through the rope transition assembly; the rope transition assembly includes a transition pin, and the transition pin is vertically connected to a first ear plate and a second ear plate; the first ear plate is fixedly connected to a transition fixing plate, and the transition fixing plate is provided with a small round hole; the second ear plate is located in the middle of the transition pin and can rotate freely around the transition pin, and a rope positioning ring is fixedly connected to the front of the second ear plate.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0015] This invention eliminates the joints between adjacent formwork panels by applying pre-tightening force, making the formwork connection more robust and reliable, and ensuring the quality of the poured fair-faced concrete structure with spatial curves. A simple and efficient mechanical device achieves unidirectional pre-tightening self-locking and unlocking disassembly of the formwork, significantly improving construction efficiency, shortening the construction period, and reducing costs. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the formwork connection device applicable to curved fair-faced concrete structures in Embodiment 1 of the present invention;

[0018] Figure 2 This is a schematic diagram of the rope fixing assembly in Embodiment 1 of the present invention;

[0019] Figure 3 This is a schematic diagram of the self-locking box body in Embodiment 1 of the present invention;

[0020] Figure 4 This is a schematic diagram of the base plate in Embodiment 1 of the present invention;

[0021] Figure 5 This is a schematic diagram of the core self-locking device in Embodiment 1 of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the guide reset movable block in Embodiment 1 of the present invention;

[0023] Figure 7 This is a schematic diagram of the connection between the self-locking tooth block return spring and the self-locking tooth block in Embodiment 1 of the present invention;

[0024] Figure 8 This is a schematic diagram of the internal structure of the tooth block fixing device in Embodiment 1 of the present invention;

[0025] Figure 9 This is a schematic diagram of the tooth block fixing device in Embodiment 1 of the present invention;

[0026] Figure 10 This is a schematic diagram of the fishbone-shaped composite straight tooth rod in Embodiment 1 of the present invention;

[0027] Figure 11 This is a schematic diagram of the manual gear device in Embodiment 1 of the present invention;

[0028] Figure 12 This is a schematic diagram of the connection and use position on the recessed side of the template in Embodiment 1 of the present invention;

[0029] Figure 13 This is a schematic diagram of the connection and use state on the recessed side of the template in Embodiment 1 of the present invention;

[0030] Figure 14 This is a schematic diagram of the formwork connection device applicable to curved fair-faced concrete structures in Embodiment 2 of the present invention;

[0031] Figure 15 This is a schematic diagram of the rope transition assembly in Embodiment 2 of the present invention;

[0032] Figure 16 This is a schematic diagram of the connection and use position on the recessed side of the template in Embodiment 2 of the present invention;

[0033] Figure 17 This is a schematic diagram of the connection and use state on the recessed side of the template in Embodiment 2 of the present invention.

[0034] Explanation of reference numerals in the attached drawings: 1. Rope fixing assembly; 101. Rope fixing assembly pin; 102. First ear seat; 103. Transition plate; 104. First connecting fixing plate; 2. Rope; 3. Rope transition assembly; 301. Transition fixing plate; 302. First ear plate; 303. Second ear plate; 304. Rope positioning ring; 305. Transition pin; 4. Self-locking housing; 401. Bottom plate; 402. Cover plate; 403. Side plate; 404. Second connecting fixing plate; 405. Horizontal reinforcing rib; 406. Parallelogram slot; 407. Parallelogram channel; 5. Tooth block fixing device; 501. Buckle plate 502. Hollow channel; 503. Snap plate return spring; 504. Snap plate; 6. Core self-locking device; 601. Guide return movable block; 602. Protrusion; 603. Hollow hole; 604. Self-locking tooth block return spring; 605. Self-locking tooth block; 606. Self-locking pin; 607. Pin hole; 608. Limiting block; 609. Notch; 7. Fishbone-type composite straight tooth rod; 701. Rack; 702. Reverse tooth; 703. Reverse tooth groove; 704. Second ear seat; 705. Fishbone-type composite tooth rod pin; 8. Manual gear device; 801. Rotating shaft; 802. Circular gear; 803. Manual turntable. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0036] Example 1

[0037] like Figure 1 As shown, this embodiment discloses a quick-loading and unloading template connection device suitable for curved fair-faced concrete structures, including a rope fixing component 1. The rope fixing component 1 and the fishbone-shaped composite straight toothed rod 7 on the right side are connected by a rope 2. The upper part of the fishbone-shaped composite straight toothed rod 7 is engaged with two core self-locking devices 6, the lower part of the fishbone-shaped composite straight toothed rod 7 is engaged with a manual gear device 8, and the left side of the core self-locking device 6 is engaged with a tooth block fixing device 5. The tooth block fixing device 5, the core self-locking device 6, the fishbone-shaped composite straight toothed rod 7 and the manual gear device 8 are arranged in accordance with... Figure 1 The components are assembled inside the self-locking housing 4 at the relative positions shown.

[0038] like Figure 2 As shown, the rope fixing assembly 1 includes a rope fixing assembly pin 101 for connecting to the rope 2. The rope fixing assembly pin 101 vertically passes through the first ear seat 102, and the left side of the first ear seat 102 is fixedly connected to the transition plate 103. The upper and lower sides of the transition plate 103 are fixedly connected to the first connecting fixing plate 104. The first connecting fixing plate 104 is provided with small round holes, which can be used to fix the rope fixing assembly 1 to the template with nails.

[0039] like Figure 3 and 4 As shown, the self-locking housing 4 includes a base plate 401, which is fixedly connected to its upper cover plate 402 and its surrounding side plates 403 to form the housing. Two parallelogram-shaped channels 407 are provided on the base plate 401, but do not penetrate the base plate. The cover plate 402 has two parallelogram-shaped holes 406, which penetrate the cover plate 402. The two parallelogram-shaped holes 406 correspond one-to-one with the two parallelogram-shaped channels 407. The core self-locking device 6 moves parallel to the parallelogram-shaped channels 407 and holes 406. Specifically, the front and rear sides of the core self-locking device 6 are slidably engaged in the parallelogram-shaped holes 406 and channels 407, respectively. The base plate 401 has two horizontally reinforced ribs 405 arranged at intervals. The two horizontally reinforced ribs 405 are located below the parallelogram channel 407. The two horizontally reinforced ribs 405 are arranged in a straight line and are at the same height as the side plate 403. The fishbone-shaped composite straight toothed rod 7 is inserted into the core self-locking device 6 along the horizontally reinforced ribs 405 on the base plate 401. The fishbone-shaped composite straight toothed rod 7 moves forward along the top surface of the horizontally reinforced ribs 405. The upper and lower sides of the base plate 401 are fixedly connected to the second connecting fixing plate 404. The second connecting fixing plate 404 has small round holes, which can be used to fix the self-locking box 4 to the template with nails.

[0040] like Figure 5 , 6 As shown in Figure 7, the core self-locking device 6 includes a guide reset movable block 601. The middle part of the front and rear sides of the guide reset movable block 601 is provided with protrusions 602 respectively. The protrusions 602 on the front and rear sides are slidably engaged in the parallelogram slot 406 and the parallelogram channel 407 respectively. A through hollow hole 603 is opened in the guide reset movable block 601 in the vertical direction to facilitate the placement of the self-locking tooth block reset spring 604. The upper end of the self-locking tooth block reset spring 604 is connected to the side plate 403, and the lower end of the self-locking tooth block reset spring 604 is connected to the self-locking tooth block 605. The self-locking tooth block reset spring 604 is always under pressure during operation and provides a certain reverse force during the upward movement of the device, causing the self-locking tooth block 605 to move downward. The self-locking toothed block 605 is rotatably connected to the self-locking pin rod 606. A pin hole 607 is opened on the front side of the guide reset movable block 601. The self-locking pin rod 606 is fixedly connected in the pin hole 607. The end of the self-locking pin rod 606 is exposed in the pin hole 607. The exposed part of the self-locking pin rod 606 moves the guide reset movable block 601 to slide upward along the parallelogram slot 406 and the parallelogram channel 407, thereby causing the self-locking toothed block 605 to disengage from the fishbone-shaped composite toothed rod 7, thereby unlocking and achieving the purpose of removing the template.

[0041] A limiting block 608 is located at the bottom left of the guide reset movable block 601, which abuts against the left side of the self-locking tooth block 605 to prevent the self-locking tooth block 605 from rotating too much clockwise. This limits the rotation of the self-locking tooth block 605 to the left, thus causing the fishbone-shaped composite straight tooth rod 7 to only move to the right, thereby achieving self-locking. A notch 609 is located on the left side of the guide reset movable block 601, which engages with the tooth block fixing device 5 to fix the guide reset movable block 601 and prevent it from sliding.

[0042] like Figure 8 and 9 As shown, the tooth block fixing device 5 includes a snap-on plate channel block 501, which is fixedly connected to the base plate 401. The snap-on plate channel block 501 is provided with a square hollow channel 502. A snap-on plate return spring 503 and a snap-on plate 504 are provided in the hollow channel 502. One end of the snap-on plate return spring 503 is connected to the hollow channel 502, and the other end of the snap-on plate return spring 503 is connected to the snap-on plate 504.

[0043] like Figure 10 As shown, the fishbone-type composite straight toothed rod 7 includes a rack 701. The tooth groove surface of the rack 701 meshes with the manual gear device 8 below. The back of the rack 701 is provided with several reverse teeth 702 along the length direction. A reverse tooth groove 703 is formed between any two adjacent reverse teeth 702. The reverse tooth groove 703 is engaged with the self-locking tooth block 605. The angle of the reverse tooth groove 703 tilting to the left is the same as the angle of the self-locking tooth block 605 tilting to the right, so that the two can mesh tightly. The tail of the rack 701 is provided with a second ear seat 704. The second ear seat 704 is provided with a fishbone-type composite toothed rod pin 705. The fishbone-type composite toothed rod pin 705 is connected to the rope 2.

[0044] like Figure 11 As shown, the manual gear device 8 includes a rotating shaft 801, which is rotatably connected to the cover plate 402. A circular gear 802 is located at the inner end of the rotating shaft 801, meshing with a rack 701. A manual turntable 803 is located at the outer end of the rotating shaft 801, and the manual turntable 803 is fixedly connected to the circular gear 802 via the rotating shaft 801. Rotating the manual turntable 803 clockwise causes the circular gear 802 to rotate as well, thereby driving the fishbone-shaped compound spur gear 7 forward.

[0045] like Figure 12 and 13As shown, when connecting and fixing the template on the concave side, the rope fixing assembly 1 is fixed to the template, and the self-locking housing 4 is fixed to another adjacent template. One end of the rope 2 is connected to the rope fixing assembly 1 through the rope fixing assembly pin 101, and the other end is connected to the fishbone-type composite gear pin 7 through the fishbone-type composite gear pin 705. The tooth block fixing device 5, the core self-locking device 6, the fishbone-type composite straight gear 7, and the manual gear device 8 are assembled in the self-locking housing 4 according to the relative positions shown in the figure.

[0046] The template connection achieves a self-locking process: During the forward movement of the fishbone-shaped composite straight toothed rod 7, the self-locking tooth block 605 can rotate to the right and move upward without affecting the rightward movement of the fishbone-shaped composite straight toothed rod 7. However, with each forward movement of a fishbone tooth, the self-locking tooth block 605 tightly engages with the countersunk tooth groove 703. Since the self-locking tooth block 605 cannot rotate to the left, it can suppress the leftward movement of the fishbone-shaped composite straight toothed rod 7, which is equivalent to providing a certain preload force to the two adjacent templates.

[0047] The template disassembly and unlocking process involves pulling the self-locking pin 606 upwards. At this time, the self-locking tooth block return spring 604 is compressed and contracts. The elastic force generated by the contraction deformation of the self-locking tooth block return spring 604 and the pulling force generated by pulling the self-locking pin 606 upwards both drive the self-locking tooth block 605 to slide upwards along the hollow hole 603, thus disengaging the self-locking tooth block 605 from the reverse tooth groove 703. When the guide reset movable block 601 reaches a certain height, the latch plate 504 and the notch 609 engage precisely, thus unlocking. Further counterclockwise rotation of the manual turntable 803 moves the fishbone-shaped composite straight tooth rod 7 away from the self-locking housing 4, facilitating template disassembly.

[0048] The process of reconnecting the template after disassembly: Push the self-locking pin 606 downwards, causing the guide reset block 601 to move downwards as well. This disengages the notch 609 from the snap-fit ​​plate 504. At this point, the snap-fit ​​plate reset spring 503 retracts, pulling the snap-fit ​​plate 504 to the left. The self-locking tooth block reset spring 604 releases the elastic force generated by its previous contraction and deformation. Combined with the pressure from pushing the self-locking pin 606 downwards, this causes the self-locking tooth block 605 to move downwards along the hollow hole 603, allowing it to re-engage tightly with the countersunk groove 703, thus re-locking and connecting the template.

[0049] Example 2

[0050] like Figure 14 and 15As shown, this embodiment adds a rope transition component 3 based on the technology of embodiment one. The rope transition component 3 includes a transition pin 305, and a first ear plate 302 and a second ear plate 303 are connected in series in the vertical direction of the transition pin 305. The first ear plate 302 is fixedly connected to the transition fixing plate 301, and the transition fixing plate 301 is provided with a small round hole, which can be used to fix the transition fixing plate 301 to the template with nails. The second ear plate 303 is located in the middle of the transition pin 305 and can rotate freely around the transition pin 305, which serves to position the rope transition component 3. A rope positioning ring 304 is fixedly connected to the front of the second ear plate 303, which serves to position and guide the rope 2.

[0051] like Figure 16 and 17 As shown, when the device is used for connection on the protruding side of the template, the rope fixing assembly 1 is fixed to the template, the rope transition assembly 3 and the self-locking housing 4 are fixed to another adjacent template, the rope 2 passes through the rope transition assembly 3, one end is connected to the rope fixing assembly 1 through the rope fixing assembly pin 101, and the other end is connected to the fishbone-type composite toothed pin 705. The remaining devices and usage methods are the same as in Embodiment 1 above.

[0052] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A quick-assembly and disassembly formwork connection device suitable for curved fair-faced concrete structures, characterized in that: It includes a rope fixing assembly (1), which is connected to the fishbone-shaped composite straight toothed rod (7) on the right side by a rope (2); The fishbone-shaped composite straight toothed rod (7) is engaged with two core self-locking devices (6) at the top, and the fishbone-shaped composite straight toothed rod (7) is engaged with a manual gear device (8) at the bottom. The core self-locking device (6) is engaged with a tooth block fixing device (5) on the left side. The gear parts of the tooth block fixing device (5), the core self-locking device (6), the fishbone-type composite straight tooth rod (7) and the manual gear device (8) are all located inside the self-locking housing (4); The self-locking box (4) includes a bottom plate (401), which is fixedly connected to its upper cover plate (402) and its surrounding side plates (403) to form a box. The bottom plate (401) is provided with two parallelogram channels (407), and the cover plate (402) is provided with two parallelogram holes (406). The two parallelogram holes (406) and the two parallelogram channels (407) correspond to each other one-to-one. The core self-locking device (6) is slidably engaged in the parallelogram holes (406) and the parallelogram channels (407) on the front and rear sides, respectively. The base plate (401) is provided with two horizontally reinforced ribs (405) arranged at intervals. The two horizontally reinforced ribs (405) are located below the parallelogram channel (407) and are arranged in a straight line. The fishbone-shaped composite straight toothed rod (7) moves forward along the top surface of the horizontally reinforced ribs (405). The upper and lower sides of the base plate (401) are fixedly connected to the second connecting fixing plate (404), and the second connecting fixing plate (404) is provided with small round holes.

2. The formwork connection device for quick loading and unloading applicable to curved fair-faced concrete structures according to claim 1, characterized in that: The rope fixing assembly (1) includes a rope fixing assembly pin (101), which vertically passes through a first ear seat (102). The left side of the first ear seat (102) is fixedly connected to a transition plate (103). The transition plate (103) has a first connecting fixing plate (104) fixedly connected to its upper and lower sides. The first connecting fixing plate (104) has a small round hole.

3. The formwork connection device for quick loading and unloading applicable to curved fair-faced concrete structures according to claim 1, characterized in that: The core self-locking device (6) includes a guide reset movable block (601), and the middle part of the front and rear sides of the guide reset movable block (601) is provided with protrusions (602), and the protrusions (602) on the front and rear sides are respectively slidably engaged in the parallelogram slot (406) and the parallelogram channel (407). A through hollow hole (603) is provided in the guide reset movable block (601) in the vertical direction. A self-locking tooth block reset spring (604) is provided in the hollow hole (603). The upper end of the self-locking tooth block reset spring (604) is connected to the side plate (403). The lower end of the self-locking tooth block reset spring (604) is connected to the self-locking tooth block (605). The self-locking tooth block (605) is rotatably connected to the self-locking pin rod (606). A pin hole (607) is provided on the front side of the guide reset movable block (601). The self-locking pin rod (606) is fixedly connected in the pin hole (607). The end of the self-locking pin rod (606) is exposed in the pin hole (607). The guide reset movable block (601) has a limiting block (608) at its lowest left end, which abuts against the left side of the self-locking tooth block (605); the guide reset movable block (601) has a notch (609) on its left side, which engages with the tooth block fixing device (5).

4. The quick-loading and unloading formwork connection device for curved fair-faced concrete structures according to claim 3, characterized in that: The tooth block fixing device (5) includes a snap-on plate channel block (501), which is fixedly connected to the base plate (401). The snap-on plate channel block (501) is provided with a square hollow channel (502). A snap-on plate return spring (503) and a snap-on plate (504) are provided in the hollow channel (502). One end of the snap-on plate return spring (503) is connected to the hollow channel (502), and the other end of the snap-on plate return spring (503) is connected to the snap-on plate (504). The snap-on plate (504) engages with the notch (609).

5. The quick-loading and unloading formwork connection device for curved fair-faced concrete structures according to claim 3, characterized in that: The fishbone-shaped composite straight toothed rod (7) includes a rack (701), the tooth groove surface of the rack (701) meshes with the manual gear device (8) below, and the back of the rack (701) is provided with a plurality of reverse teeth (702) along the length direction, and a reverse tooth groove (703) is formed between any two adjacent reverse teeth (702), and the reverse tooth groove (703) engages with the self-locking tooth block (605); The tail of the rack (701) is provided with a second ear seat (704), and the second ear seat (704) is provided with a fishbone-shaped composite toothed pin (705), which is connected to the rope (2).

6. The formwork connection device for quick loading and unloading applicable to curved fair-faced concrete structures according to claim 5, characterized in that: The manual gear device (8) includes a rotating shaft (801), which is rotatably connected to the cover plate (402). The inner end of the rotating shaft (801) is provided with a circular gear (802), which meshes with the rack (701). The outer end of the rotating shaft (801) is provided with a manual turntable (803).

7. The formwork connection device for quick loading and unloading applicable to curved fair-faced concrete structures according to claim 1, characterized in that: When the device is used for connection on the protruding side of the template, the rope (2) passes through the rope transition assembly (3); The rope transition assembly (3) includes a transition pin (305), which vertically connects a first ear plate (302) and a second ear plate (303); the first ear plate (302) is fixedly connected to a transition fixing plate (301), which has a small round hole; the second ear plate (303) is located in the middle of the transition pin (305) and can rotate freely around the transition pin (305); a rope positioning ring (304) is fixedly connected to the front of the second ear plate (303).

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