Building template

Abstract

The invention relates to the technical field of constructional engineering, in particular to a building formwork which comprises formwork single plates and connecting pieces, every two adjacent formwork single plates are spliced and connected through the corresponding connecting piece, round clamping bases are arranged on the two sides of each connecting piece, clamping holes allowing the round clamping bases to be inserted in a matched mode are formed in the four sides of each formwork single plate, and locking mechanisms are arranged on the end faces of the round clamping bases. A pushing mechanism is arranged on the face, not making contact with concrete, of the single formwork plate, the locking mechanism comprises traction arms and clamping arms, a guide rod is fixed to the end face of the circular clamping base, the guide rod is sleeved with a ring sleeve in a sliding mode, the multiple traction arms are hinged to the ring sleeve, the multiple clamping arms are hinged to the circular clamping base, and the traction arms are hinged to the clamping arms in a one-to-one correspondence mode. When the ring sleeve is pushed to move through the pushing mechanism, the joint of the traction arm and the clamping arm protrudes towards the periphery in an expanding mode and abuts against and is matched with the port of the clamping hole to form mechanical locking, and when the pushing mechanism is operated, a special tool does not need to be used, and a traditional wedge-shaped clamping piece is replaced for locking.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, in particular to a building template. Background Art

[0002] Building formwork is a temporary mold support system used in the construction of cast-in-place concrete structures. It is usually made of materials such as wood, metal or plastic. Its core function is to provide shaped support for unsolidified concrete, ensuring that the components form the geometric shape, size and surface flatness required by the design. Through the precise erection of the formwork system, it can not only control the quality of the project and accelerate the construction progress, but also ensure operational safety. Its reusable nature significantly reduces construction costs.

[0003] The existing plastic-steel formwork system is assembled from multiple panels. During assembly, the panels are locked together by inserting a latch rod into a hole on the side of each panel and then inserting a wedge-shaped clamp into a slot on the latch rod. To ensure the secure connection between the two panels, a worker must strike the wedge clamp with a hammer after inserting the wedge clamp into the slot on the latch rod to tighten the two panels.

[0004] There are multiple connection points between the templates, which require multiple hammering operations, resulting in a long construction time, low construction efficiency, and high labor intensity; In addition, the method of tightening the wedge-shaped clamps by hammering causes the template to be subjected to vibration and impact, which damages the overall structure of the assembly. In addition, there is a situation where the hammering is offset on the plate body, causing damage to the plate body and shortening its service life. In addition, since the wedge-shaped clamp is tightly squeezed against the inner wall of the slot on the latch rod after being hammered, it is not only difficult to disassemble later, but also structural damage such as deformation of the latch rod and wedge-shaped clamp or expansion of the slot may easily occur after long-term and repeated use, increasing replacement costs. Summary of the Invention

[0005] The purpose of the present invention is to provide a building template to solve the technical problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions.

[0007] A building template includes a template and a connecting piece. Adjacent templates are assembled and connected by the connecting piece. Circular holders are provided on both sides of the connecting piece. Card holes are provided on the four sides of the template for the circular holders to match and insert. A locking mechanism is provided on the end surface of the circular holder. A pushing mechanism is provided on the side of the template that does not contact the concrete. The locking mechanism includes a traction arm and a card arm. A guide rod is fixed on the end surface of the circular holder. A ring sleeve is slidably mounted on the guide rod. A plurality of traction arms are hingedly mounted on the ring sleeve. A plurality of card arms are hingedly mounted on the circular holder, and the traction arm and the card arm are hingedly connected one by one. The pushing mechanism is used to push the ring sleeve toward one side of the circular holder, causing the connection between the traction arm and the card arm to bulge outward in an expanded diameter manner, which conflicts with the end of the card hole to achieve locking.

[0008] Preferably, the guide rod is coaxially arranged with the circular card seat, the diameter of the guide rod is smaller than the diameter of the circular card seat, the ring sleeve and the circular card seat have the same diameter, and a first spring is provided on the outer sleeve of the guide rod, one end of the first spring is fixed to the ring sleeve, and the other end is fixed to the circular card seat. When the first spring elastically pushes the ring sleeve to slide and reset, the traction arm and the corresponding card arm are reset to a straight line structure as a whole, and the distance between the outer surface of the straight line structure and the axis of the circular card seat is smaller than the radius of the circular card seat.

[0009] Preferably, the formwork panel is formed as an integral body of a plate body and a frame body, the frame body is located on the side of the plate body away from the concrete, and the clamping holes are distributed on the four sides of the frame body. When the circular clamping seat is fully inserted into the clamping hole, the end face of the circular clamping seat is located inside the clamping hole, so that the clamping arm is in conflict with the clamping hole port, and each clamping arm is provided with a clamping port.

[0010] Preferably, the pushing mechanism includes a cylindrical rod and a pushing module. The pushing module is arranged on the plate body. The plate body is located on the four sides of the pushing module and mounting seats are fixed corresponding to each clamping hole. Each mounting seat is provided with a through sliding hole. A cylindrical rod is slidably installed in each sliding hole. One end of the cylindrical rod is hollow and the other end is sealed, and the hollow end faces the clamping hole. The inner diameter of the hollow part of the cylindrical rod matches the outer diameter of the guide rod. The pushing module is used to simultaneously push the four cylindrical rods to move toward the side where the clamping hole is located.

[0011] Preferably, the pushing module includes a threaded rod and a conical pushing head, a cylindrical seat is fixed on the plate body, and side notches are provided on the outer peripheral wall of the cylindrical seat corresponding to the positions of each mounting seat, a threaded hole is provided on the end face of the cylindrical seat, and the threaded rod is screwed into the threaded hole with matching threads, and the conical pushing head is installed on the end of the threaded rod extending into the cylindrical seat, and the small diameter end is adjacent to the plate body, and one end of each cylindrical rod away from the clamping hole extends into the cylindrical seat through the side notch, and is respectively fixed with a wedge-shaped extrusion block, and each wedge-shaped extrusion block is extruded and matched with the conical pushing head, and a first hand wheel is installed on the other end of the threaded rod.

[0012] Preferably, an annular disc is fixedly sleeved on each cylindrical rod between the mounting seat and the wedge-shaped extrusion block, and a second spring is sleeved on each cylindrical rod. One end of the second spring is fixed to the annular disc, and the other end is fixed to the mounting seat.

[0013] Preferably, four auxiliary strengthening ribs are evenly distributed on the outer peripheral wall of the cylindrical seat. The end parts of the auxiliary strengthening ribs are respectively fixedly corresponding to the four corners of the frame body, and each auxiliary strengthening rib is fixed to the plate body.

[0014] Preferably, the connecting member includes a shaft rod and two connecting plates. The two connecting plates are symmetrically arranged. The shaft rod is arranged on one side of the two connecting plates. Connecting arms are respectively fixed to the side ends of the two connecting plates. Each connecting arm is rotatably sleeved on the shaft rod. A circular clamping seat is correspondingly fixed on the surface of the connecting plate. An adjusting mechanism is commonly provided on the two connecting plates. The adjusting mechanism is used to drive the two connecting plates to rotate and adjust simultaneously around the shaft rod to realize the angle adjustment.

[0015] Preferably, the adjusting mechanism includes an internally threaded sleeve and a bidirectional screw. Mounting grooves are provided on the two connecting plates. Internally threaded sleeves are rotatably mounted in the two mounting grooves through rotating shafts. The rotating shafts are arranged parallel to the shaft rod. The two internally threaded sleeves are symmetrically arranged. The bidirectional screw is threadedly matched and installed in the two internally threaded sleeves. A second handwheel is installed at one end of the bidirectional screw.

[0016] Preferably, insertion rods are respectively fixed on the two sides of the circular clamping seat on the connecting plate, and insertion holes for the insertion rods to be matched and inserted are respectively provided on the two sides of each card hole on the four sides of the frame body.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0018] When the ring sleeve is pushed and moved by the pushing mechanism, the connection part of the traction arm and the clamping arm bulges outwards in a diameter-expanding manner and abuts against the port of the card hole to form mechanical locking. Moreover, when operating the pushing mechanism, no special tool is required, replacing the traditional locking with a wedge-shaped clamping part. And the greater the amount of movement of the ring sleeve pushed by the pushing mechanism towards the circular clamping seat side, the higher the tightening degree.

[0019] The pushing mechanism pushes the four cylindrical rods to move synchronously towards the card hole side by the pushing module to push the ring sleeve, realizing multi-point synchronous locking. During disassembly, the pushing on the ring sleeve can be cancelled simultaneously, making the disassembly and assembly convenient and fast, and reducing the labor intensity of the staff.

[0020] The two connecting plates of the connecting member can rotate around the shaft rod. Cooperating with the movement of the two internally threaded sleeves driven by the thread of the bidirectional screw in the adjusting mechanism to adjust the included angle between the two connecting plates, forming a modular adjustable-angle connecting member, which can meet the construction requirements of different angles, enhance the versatility of the formwork system, reduce the customization cost, and improve the flexibility of complex structure construction.

[0021] When the pushing mechanism cancels the extrusion of the first spring, the second spring pushes the ring sleeve to slide back to its original position, causing the traction arm and the clamping arm to return to a straight-line structure, realizing the automatic reset of the locking mechanism and making the disassembly easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic diagram showing the locking connection between two die single plates through a connecting member; Figure 2 is Figure 1 a schematic diagram of the structure shown from another perspective; Figure 3 FIG. is a schematic diagram of the die single plate structure in the present invention; Figure 4 is Figure 3 a schematic sectional view of the structure shown; Figure 5 FIG. is a schematic diagram of the pushing mechanism structure in the present invention; Figure 6 FIG. is a schematic diagram of the connecting member structure in the present invention; Figure 7 is Figure 6 a schematic diagram of the structure shown from another perspective; Figure 8 FIG. is a schematic diagram of the locking mechanism structure in the present invention; Figure 9 FIG. is a schematic diagram of the structure of the locking mechanism in the present invention when it is in the locked state; Figure 10 FIG. is a schematic diagram of the adjusting mechanism structure in the present invention; Figure 11 is Figure 1 a schematic sectional view of the structure shown; Figure 12 is Figure 11 an enlarged schematic diagram of the structure at A in; Figure 13 is Figure 12 an enlarged schematic diagram of the structure at B in; Figure 14 FIG. is a schematic diagram of the locking and assembling of four die single plates.

[0023] In the figure: 1, die single board; 11, board body; 12, frame body; 13, card hole; 14, jack; 15, auxiliary reinforcing rib; 2, connecting piece; 21, connecting plate; 211, installation groove; 22, shaft rod; 23, connecting arm; 24, inserting rod; 3, circular card seat; 4, locking mechanism; 41, guide rod; 42, ring sleeve; 43, traction arm; 44, card arm; 441, bayonet; 45, first spring; 5, pushing mechanism; 51, mounting seat; 511, sliding hole; 52, cylindrical rod; 53, annular disc; 54, second spring; 6, pushing module; 61, cylindrical seat; 611, side notch; 612, threaded hole; 62, threaded rod; 621, first handwheel; 63, conical pushing head; 64, wedge-shaped extrusion block; 7, adjusting mechanism; 71, internal thread sleeve; 72, rotating shaft; 73, bidirectional screw rod; 74, second handwheel. Detailed implementation manners

[0024] The embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct communication or an indirect communication through an intermediate medium. Among them, "fixing" means that they are connected to each other and the relative positional relationship after connection remains unchanged. The orientation terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only for reference to the direction of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present invention.

[0026] In the embodiments of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0027] In the embodiments of the present invention, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the front and rear associated objects.

[0028] References to "one embodiment" or "some embodiments" or the like described in this specification mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of the present invention. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized.

[0029] Embodiment 1

[0030] Please refer to Figures 1 - 14 , the present invention provides a building formwork, which includes a formwork veneer 1 and a connecting member 2. The adjacent two formwork veneers 1 are assembled and connected through the connecting member 2. According to the actual building construction requirements, a plurality of formwork veneers 1 and the corresponding number of connecting members 2 are assembled and spliced to form a formwork system.

[0031] Among them, the formwork veneer 1 is integrally formed by a plate body 11 and a frame body 12. The frame body 12 is located on the side of the plate body 11 away from the concrete. In addition, both sides of the connecting member 2 are provided with circular clamping seats 3. Four sides of the frame body 12 are provided with clamping holes 13 for the circular clamping seats 3 to be inserted and matched. A locking mechanism 4 is provided on the end face of the circular clamping seat 3. After the circular clamping seat 3 is inserted into the clamping hole 13, as Figure 12 shown, the locking mechanism 4 passes through the clamping hole 13 and extends to the inner side of the frame body 12.

[0032] As Figure 8 shown, the locking mechanism 4 includes a traction arm 43 and a clamping arm 44. A guide rod 41 is fixed on the end face of the circular clamping seat 3, and a collar 42 is sleeved on the guide rod 41. Among them, the collar 42 can slide and translate along the length direction of the guide rod 41. A plurality of traction arms 43 are hingedly installed on the collar 42, and a plurality of clamping arms 44 are hingedly installed on the circular clamping seat 3, and the traction arms 43 and the clamping arms 44 are hinged one by one; Specifically, a plurality of grooves A are arranged in a circular array on one side of the collar 42 close to the circular clamping seat 3. One end of each traction arm 43 is hingedly installed in each groove A through a pin shaft. A plurality of grooves B are arranged in a circular array on one side of the circular clamping seat 3 close to the collar 42. One end of each clamping arm 44 is hingedly installed in each groove B through a pin shaft. The other end of each clamping arm 44 has a groove C, and the other end of each traction arm 43 is hingedly installed in the groove C through a pin shaft one by one.

[0033] A pushing mechanism 5 is provided on the side of the plate body 11 that does not contact the concrete. Through the pushing mechanism 5, the collar 42 can be pushed to move towards the circular clamping seat 3, as Figure 9As shown, at this time, the distance between the ring sleeve 42 and the circular clamping seat 3 is reduced. In order to adapt to the change in distance, the connection between the traction arm 43 and the clamping arm 44 is expanded outward. The radial size of the formed protrusion structure is larger than the inner diameter of the clamping hole 13, and then it is in conflict with the port of the clamping hole 13 to achieve a locking effect, which can fix the mold single plate 1 and the connecting part 2.

[0034] It is worth noting that the guide rod 41 is coaxially arranged with the circular card holder 3, the diameter of the guide rod 41 is smaller than the diameter of the circular card holder 3, and the ring sleeve 42 is of the same diameter as the circular card holder 3, so as to ensure that the guide rod 41 and the ring sleeve 42 can smoothly pass through the card hole 13 when the circular card holder 3 is inserted into the card hole 13; The guide rod 41 is provided with a first spring 45 on the outside. One end of the first spring 45 is fixed to the ring sleeve 42 and the other end is fixed to the circular holder 3. When the pushing mechanism 5 pushes the ring sleeve 42 to move toward the circular holder 3, Figure 9 As shown, 9 is compressed and stored.

[0035] When the pushing mechanism 5 stops pushing the ring 42, the first spring 45 elastically returns to its original position, pushing the ring 42 to slide and return to its original position. Figure 8 As shown, the pulling arm 43 and the corresponding clamping arm 44 are reset as a whole into a straight line structure, and the distance between the outer surface of the straight line structure and the axis of the circular clamping seat 3 is smaller than the radius of the circular clamping seat 3, ensuring that the pulling arm 43 and the clamping arm 44 can smoothly pass through the clamping hole 13.

[0036] Specifically, when the circular card holder 3 is fully inserted into the card hole 13, the end surface of the circular card holder 3 is located inside the card hole 13, ensuring that the end of each card arm 44 away from the traction arm 43 is located in the card hole 13, so that when the connection between the traction arm 43 and the card arm 44 bulges toward the periphery, Figure 12 As shown, the clamping arm 44 is in contact with the end of the clamping hole 13 to achieve clamping and locking. In addition, as shown in FIG. Figure 13 As shown, each clamping arm 44 is provided with a clamping notch 441 . When clamping and locking, the end of the clamping hole 13 is matched and engaged in the clamping notch 441 , increasing the contact area with the clamping arm 44 and ensuring the stability of the clamping and locking.

[0037] Example 2

[0038] See also Figure 3 、 Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that: The pushing mechanism 5 includes a cylindrical rod 52 and a pushing module 6. The pushing module 6 is provided on the plate body 11. The plate body 11 is located on the four sides of the pushing module 6 and is fixed with a mounting seat 51 corresponding to each clamping hole 13. Each mounting seat 51 is provided with a through sliding hole 511. A cylindrical rod 52 is installed in each sliding hole 511, and the cylindrical rod 52 can slide and translate in the sliding hole 511. One end of the cylindrical rod 52 is hollow and the other end is sealed, and the hollow end faces the clamping hole 13. The inner diameter of the hollow part of the cylindrical rod 52 matches the outer diameter of the guide rod 41, ensuring that the end of the guide rod 41 can smoothly enter the hollow end of the cylindrical rod 52; By the operation of the pushing module 6, the four cylindrical rods 52 can be respectively pushed towards the side where the clamping hole 13 is located. During this process, the guide rod 41 will correspondingly enter the hollow end of the cylindrical rod 52. As the movement continues, as Figure 9 and Figure 12 shown, the end of the cylindrical rod 52 contacts the ring sleeve 42 and can push the ring sleeve 42 towards the circular clamping seat 3, providing an effective pushing force for clamping and locking.

[0039] Embodiment 3

[0040] Please refer to Figure 4 and Figure 5 , the difference between this embodiment and Embodiment 2 is that: The pushing module 6 includes a threaded rod 62 and a conical pushing head 63. A cylindrical seat 61 is fixed on the plate body 11. Side notches 611 are provided on the outer peripheral wall of the cylindrical seat 61 at positions corresponding to the mounting seats 51, that is, the side notches 611 correspond to the mounting seats 51 one by one; A threaded hole 612 is provided on the end face of the cylindrical seat 61. The threaded rod 62 is screwed into the threaded hole 612 in a threaded fit. The conical pushing head 63 is installed on the end of the threaded rod 62 extending into the cylindrical seat 61, and the small-diameter end is close to the plate body 11. A first handwheel 621 is installed on the other end of the threaded rod 62. By holding the first handwheel 621 and screwing the threaded rod 62, the rotating threaded rod 62 can drive the conical pushing head 63 to move and adjust under the action of the threaded fit with the threaded hole 612; One end of each cylindrical rod 52 away from the clamping hole 13 passes through the side notch 611 and extends into the cylindrical seat 61, and a wedge-shaped extrusion block 64 is respectively fixed. Each wedge-shaped extrusion block 64 is in extrusion fit with the conical pushing head 63.

[0041] By screwing and adjusting the threaded rod 62 to push the conical pushing head 63 closer to the plate body 11, under the action of the inclined surface extrusion fit between the conical pushing head 63 and the wedge-shaped extrusion block 64, the wedge-shaped extrusion blocks 64 and the cylindrical rods 52 as a whole can be pushed towards the side of the clamping hole 13, providing an effective driving adjustment for the feeding of each cylindrical rod 52.

[0042] Among them, as Figure 5 shown, annular disks 53 are respectively and fixedly sleeved on each cylindrical rod 52 between the mounting seat 51 and the wedge-shaped extrusion block 64. A second spring 54 is sleeved on each cylindrical rod 52. One end of the second spring 54 is fixed to the annular disk 53, and the other end is fixed to the mounting seat 51.

[0043] When the cylindrical rod 52 feeds towards the card hole 13, the second spring 54 is compressed and stores energy. When the threaded rod 62 is rotated in the reverse direction to drive the conical pushing head 63 to retract, under the elastic reset action of the second spring 54, the cylindrical rod 52 can be driven to retract to cancel the pushing on the ring sleeve 42. At this time, under the elastic reset action of the first spring 45, the traction arm 43 and the card arm 44 can be driven to retract and reset for disassembly.

[0044] In addition, as Figure 3 and Figure 4 shown, four auxiliary reinforcing ribs 15 are evenly distributed on the outer peripheral wall of the cylindrical seat 61. The end parts of the auxiliary reinforcing ribs 15 are respectively fixed corresponding to the four corners of the frame body 12, and each auxiliary reinforcing rib 15 is fixed to the plate body 11. Through the auxiliary reinforcing ribs 15, the connection between the plate body 11, the frame body 12 and the cylindrical seat 61 can be strengthened to ensure the stability of the overall structure of the die single plate 1.

[0045] In addition, it is worth noting that when the threaded rod 62 is rotated to drive the cylindrical rod 52 to feed until the locking mechanism 4 is in a clamped and locked state as a whole, due to the self-locking effect of the threaded fit between the threaded rod 62 and the threaded hole 612, during non-rotary adjustment, the cylindrical rod 52 can be prevented from retracting, which may cause the traction arm 43 and the card arm 44 to reset, helping to maintain the clamped and locked state for a long time.

[0046] Embodiment 4

[0047] Please refer to Figure 6 and Figure 7 , the difference between this embodiment and Embodiment 3 is that: The connecting member 2 includes a shaft rod 22 and two connecting plates 21. The two connecting plates 21 are symmetrically arranged. The shaft rod 22 is arranged on one side of the two connecting plates 21. Connecting arms 23 are respectively fixed to the side ends of the two connecting plates 21. Each connecting arm 23 is rotatably sleeved on the shaft rod 22, so that the two connecting plates 21 are both rotatably connected to the shaft rod 22; The circular card seat 3 is correspondingly fixed on the surface of the connecting plate 21. An adjusting mechanism 7 is jointly provided on the two connecting plates 21. Through the adjusting mechanism 7, the two connecting plates 21 can be driven to rotate and adjust simultaneously around the shaft rod 22 to adjust the included angle between the two connecting plates 21 to adapt to building construction with different included angles.

[0048] Among them, as Figure 10 shown, the adjusting mechanism 7 includes an internally threaded sleeve 71 and a bidirectional screw rod 73. Installation grooves 211 are provided on both connecting plates 21. The internally threaded sleeves 71 are rotatably installed in the two installation grooves 211 through rotating shafts 72. The rotating shafts 72 are arranged parallel to the shaft rod 22. By using the rotating shafts 72 to rotatably install the internally threaded sleeves 71 in the installation grooves 211, the internally threaded sleeves 71 are enabled to have the ability to rotate; The two internal thread sleeves 71 are symmetrically arranged, and the bidirectional screw 73 is threadedly and matingly installed in the two internal thread sleeves 71. A second handwheel 74 is installed at one end of the bidirectional screw 73. By holding the rotating shaft 72 and screwing the bidirectional screw 73, the rotating bidirectional screw 73 can threadedly drive the two internal thread sleeves 71 to approach or move away from each other. Combining with the connecting plate 21 being rotatably connected to the shaft rod 22, when the bidirectional screw 73 rotates forward to drive the two internal thread sleeves 71 to move away from each other, the two connecting plates 21 rotate away from each other, realizing the adjustment of the increased included angle. On the contrary, the included angle between the two connecting plates 21 can be adjusted smaller.

[0049] Among them, since the internal thread sleeve 71 can rotate in the installation groove 211, when the two connecting plates 21 are rotated and adjusted, the internal thread sleeve 71 can adaptively rotate to adapt to the angle change between the two connecting plates 21, avoiding the situation of mechanical jamming.

[0050] Such as Figure 3 、 Figure 7 and Figure 11 As shown, on the connecting plate 21, inserting rods 24 are respectively fixed on both sides of the circular clamping seat 3. On the four sides of the frame body 12, inserting holes 14 for the inserting rods 24 to be matingly inserted are respectively provided on both sides of each clamping hole 13. When assembling the die single board 1 on the side of the connecting member 2, by correspondingly inserting the inserting rods 24 into the inserting holes 14, further clamping support is provided to ensure the firmness of the connection between the die single board 1 and the connecting member 2, thereby effectively improving the overall resistance to the concrete pressure.

[0051] Embodiment 5

[0052] This embodiment takes the example of assembling four die single boards 1 into a whole. As Figure 14 shown, by arranging the connecting member 2 between two adjacent die single boards 1 and using the circular clamping seat 3 and the locking mechanism 4 on the connecting member 2 and the pushing mechanism 5 on the die single board 1 to cooperate, the four die single boards 1 can be clamped and locked together to form a stable formwork system.

[0053] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms.

Claims

1. A building formwork, comprising formwork veneers (1) and connecting members (2). Adjacent two formwork veneers (1) are assembled and connected through the connecting members (2). It is characterized in that: Both sides of the connecting member (2) are provided with circular clamping seats (3), and four sides of the formwork veneer (1) are respectively provided with clamping holes (13) for the circular clamping seats (3) to be inserted in a matching manner; A locking mechanism (4) is arranged on the end face of the circular clamping seat (3), and a pushing mechanism (5) is arranged on the side of the formwork veneer (1) that does not contact the concrete; The locking mechanism (4) comprises a traction arm (43) and a clamping arm (44); A guide rod (41) is fixed on the end face of the circular clamping seat (3), and a ring sleeve (42) is slidably sleeved on the guide rod (41); A plurality of the traction arms (43) are hingedly installed on the ring sleeve (42), and a plurality of the clamping arms (44) are hingedly installed on the circular clamping seat (3), and the traction arms (43) and the clamping arms (44) are hinged in one-to-one correspondence; The pushing mechanism (5) is used to push the ring sleeve (42) to move towards one side of the circular clamping seat (3), so that the connection part of the traction arm (43) and the clamping arm (44) bulges outwards in a diameter-expanding manner and abuts against the port of the clamping hole (13) to realize locking.

2. A building formwork according to claim 1, characterized in that: The guide rod (41) is coaxially arranged with the circular clamping seat (3); The diameter of the guide rod (41) is smaller than the diameter of the circular clamping seat (3), and the ring sleeve (42) has the same diameter as the circular clamping seat (3); A first spring (45) is sleeved outside the guide rod (41), one end of the first spring (45) is fixed to the ring sleeve (42), and the other end is fixed to the circular clamping seat (3); When the first spring (45) elastically pushes the ring sleeve (42) to slide back to its original position, the traction arm (43) and the corresponding clamping arm (44) are reset as a linear structure as a whole, and the distance between the outer surface of the linear structure and the axis of the circular clamping seat (3) is smaller than the radius of the circular clamping seat (3).

3. A building formwork according to claim 1, characterized in that: The formwork veneer (1) is integrally formed by a plate body (11) and a frame body (12), and the frame body (12) is located on the side of the plate body (11) away from the concrete; The clamping holes (13) are distributed on four sides of the frame body (12); When the circular clamping seat (3) is completely inserted into the clamping hole (13), the end face of the circular clamping seat (3) is located inside the clamping hole (13), so that the clamping arm (44) abuts and cooperates with the port of the clamping hole (13); A clamping opening (441) is arranged on each clamping arm (44).

4. A building formwork according to claim 3, characterized in that: The pushing mechanism (5) comprises a cylindrical rod (52) and a pushing module (6); The pushing module (6) is arranged on the plate body (11), and mounting seats (51) are respectively fixed on four sides of the plate body (11) corresponding to each clamping hole (13) where the pushing module (6) is located; Each of the mounting seats (51) is provided with a through sliding hole (511), and the cylindrical rods (52) are slidably inserted through the sliding holes (511); One end of the cylindrical rod (52) is hollow and the other end is sealed, and the hollow end faces the card hole (13); The inner diameter of the hollow part of the cylindrical rod (52) matches the outer diameter of the guide rod (41); The pushing module (6) is used to simultaneously push the four cylindrical rods (52) to move towards the side where the card hole (13) is located respectively.

5. A building formwork according to claim 4, characterized in that: The pushing module (6) includes a threaded rod (62) and a conical pushing head (63); A cylindrical seat (61) is fixed on the plate body (11). Side notches (611) are provided on the outer peripheral wall of the cylindrical seat (61) at positions corresponding to the mounting seats (51), and a threaded hole (612) is provided on the end face of the cylindrical seat (61); The threaded rod (62) is screwed into the threaded hole (612) in a threaded fit manner. The conical pushing head (63) is installed on the end of the threaded rod (62) extending into the cylindrical seat (61), and the small-diameter end is close to the plate body (11); One end of each cylindrical rod (52) away from the card hole (13) passes through the side notch (611) and extends into the cylindrical seat (61), and a wedge-shaped extrusion block (64) is respectively fixed. Each wedge-shaped extrusion block (64) is in extrusion fit with the conical pushing head (63); A first handwheel (621) is installed on the other end of the threaded rod (62).

6. A building formwork according to claim 5, characterized in that: An annular disc (53) is fixedly sleeved between the mounting seat (51) and the wedge-shaped extrusion block (64) on each cylindrical rod (52), and a second spring (54) is sleeved on each cylindrical rod (52); One end of the second spring (54) is fixed to the annular disc (53), and the other end is fixed to the mounting seat (51).

7. A building formwork according to claim 5, characterized in that: Four auxiliary reinforcing ribs (15) are evenly distributed on the outer peripheral wall of the cylindrical seat (61), and the end parts of the auxiliary reinforcing ribs (15) are respectively fixedly corresponding to the four corners of the frame body (12); Each of the auxiliary reinforcing ribs (15) is fixed to the plate body (11).

8. A building formwork according to claim 3, characterized in that: The connecting member (2) includes a shaft rod (22) and two connecting plates (21); The two connecting plates (21) are symmetrically arranged, and the shaft rod (22) is arranged on one side of the two connecting plates (21); Connecting arms (23) are respectively fixed to the side ends of the two connecting plates (21), and each connecting arm (23) is rotatably sleeved on the shaft rod (22); The circular clamping seat (3) is correspondingly fixed on the surface of the connecting plate (21); An adjusting mechanism (7) is jointly provided on the two connecting plates (21). The adjusting mechanism (7) is used to drive the two connecting plates (21) to rotate and adjust simultaneously around the shaft rod (22) to achieve the angle adjustment.

9. A formwork for building according to claim 8, wherein: The adjusting mechanism (7) includes an internally threaded sleeve (71) and a bidirectional screw rod (73); Mounting grooves (211) are provided on both of the two connecting plates (21), and the internally threaded sleeves (71) are rotatably mounted in the two mounting grooves (211) through rotating shafts (72); The rotating shafts (72) are arranged parallel to the shaft rod (22), and the two internally threaded sleeves (71) are symmetrically arranged; The bidirectional screw rod (73) is threadedly and matingly installed in the two internally threaded sleeves (71); One end of the bidirectional screw rod (73) is provided with a second handwheel (74).

10. A formwork for building according to claim 8, wherein: Insertion rods (24) are respectively fixed on both sides of the circular clamping seat (3) on the connecting plate (21), and insertion holes (14) for the insertion rods (24) to be matingly inserted are respectively provided on both sides of each of the card holes (13) on the four sides of the frame body (12).

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