Connection components and keel units

Abstract

The present invention relates to a connection assembly and a keel unit, wherein the connection assembly comprises a male part and a female part, wherein the protruding structure of the male part is matched with the stop structure of the female part, so as to limit the male part and the female part to each other along the second direction in a first state, and limit the male part and the female part to each other along the first direction and the second direction at the same time in a second state. Through the present invention, the difficulty of on-site assembly process can be simplified, the material use cost of the template clamping system can be reduced, the time consumption of the assembly process can be greatly shortened, the stability of the keel connection can be improved, and the assembly can be more convenient.

Description

Technical Field

[0001] The present invention generally relates to the field of construction, and in particular to a connection assembly and a keel unit. Background Art

[0002] In the construction industry, formwork technology is the most commonly used construction technology. It is closely related to the pouring quality of concrete. Formwork technology can ensure that the structure and size of the poured workpiece can fully meet the established construction requirements and standards. In order to improve the pouring quality, it is very important to tighten the placed formwork. The stable connection between the tightening keels directly determines whether the formwork remains stable during the pouring process.

[0003] The area where the two purlins are connected is generally at the straight surface, external corner and internal corner. First, the existing accessory structure is complex, the number of accessories used is large, and the on-site assembly process is cumbersome. Secondly, large-sized purlins can be used at the straight surface, but when the straight surface size of the wall to be cast is small and the number of external corners and internal corners is large, accessories must be used at the external corners and internal corners, which increases the number of accessories used in the entire system, greatly increases the material cost, and makes the process more complicated. Thirdly, the connection method and the accessory structure used for purlin connection at the straight surface, external corner and internal corner in the prior art are different, which greatly increases the difficulty of the on-site assembly process and increases the training cost of on-site assembly construction personnel. Finally, the existing two-purlin connection method has defects in connection stability due to the large number of accessories used and the cumbersome connection structure.

[0004] Due to the above-mentioned problems, there are many sizes and specifications of existing keels. Specifically, on the one hand, due to the large number of structural attachments and complex connection structures between existing keels, bolts or latches are often used for fastening, which will inevitably cause shaking and loosening. If a special-sized wall is encountered on site, the position relationship of the two keels will change during the process of wall installation after the two keels are connected due to loose connections, and the requirements for the accuracy of formwork tightening cannot be met. On the other hand, most of the existing connection methods between keels require one keel to be positioned on the wall first, and then the other keel can be installed. In other words, the existing two-keel connection method cannot be pre-assembled into a whole of suitable length according to the size of the cast wall and then installed on the wall, which increases the time and complexity of on-site assembly.

[0005] In summary, the existing construction casting formwork clamping keel connection method has complicated assembly process, high material cost and insufficient connection stability. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a connection assembly and a keel unit.

[0007] The objective of the present invention is achieved through the following technical solution: a connection assembly for connecting two keels, the connection assembly comprising a male component and a female component, the male component and the female component can be assembled with each other into a first state and a second state, the first state is suitable for connecting the two keels relative to each other along a first direction, and the second state is suitable for connecting one keel along the first direction and the other keel along a second direction perpendicular to the first direction; the male component comprises a protruding structure in a third direction perpendicular to the first direction and the second direction respectively, the female component comprises a stop structure in the third direction, the protruding structure is adapted to the stop structure , so as to be suitable for limiting the male component and the female component to each other along the second direction in the first state, and limiting the male component and the female component to each other along the first direction and the second direction at the same time in the second state, the protruding structure includes a convex strip extending along the first direction, the male component includes a first connecting portion and a first body connected to each other, the first connecting portion is suitable for being connected to the end of the keel, and the first body is provided with the protruding structure; and / or the female component includes a second connecting portion and a second body connected to each other, the second connecting portion is suitable for being connected to the end of the keel, and the second body is provided with the stop structure.

[0008] The connection assembly of the present invention can be used to connect two keels at the straight surface and the corners at the same time. There is no need to distinguish different accessories and connection methods for different areas, which greatly reduces the difficulty of the assembly process and improves the assembly process time. When encountering a wall structure to be cast with more corner structures, since the connection structure only requires two accessories, the male part and the female part, the material use cost is reduced, and the parts standardization of the template clamping system is also achieved. Finally, due to the use of a raised structure and a stopper structure for cooperation, the connection between the two keels at the straight surface has sufficient limit perpendicular to the wall direction, and has sufficient limit along the two keel directions at the corner, ensuring the stability of the keel connection. In addition, due to the stable connection, two or more keels can be connected and combined into a whole, and directly fixed on the wall, which is more convenient to assemble.

[0009] Furthermore, the connection assembly of the present invention has a support rib extending from the second connection portion along the first direction away from the second connection portion, and an extended portion of the support rib is connected to the second body.

[0010] Furthermore, the connection assembly of the present invention has a support rib extending from the second body along the third direction away from the second body, and an extended portion of the support rib is connected to the second connection portion.

[0011] Furthermore, in the connection assembly of the present invention, the second body has a boss extending along the third direction, and the second body is provided with a hollow structure at the boss.

[0012] Furthermore, in the connection assembly of the present invention, the first connection part is provided with a through hole, and the first connection part transitions to the through hole through an inclined surface; and / or the second connection part is provided with a through hole, and the second connection part transitions to the through hole through an inclined surface.

[0013] Furthermore, in the connection assembly of the present invention, a first notch is provided at a corner of one end of the first body away from the first connection part along the first direction, and a second notch is provided at a corner of one end of the second body away from the second connection part along the first direction, and the first notch is adapted to the second notch so as to cooperate with the second notch to make way for or limit corner template system parts in the second state.

[0014] Furthermore, in the connecting assembly of the present invention, the protruding structure includes a protrusion, the female component includes a boss extending along the third direction, the boss is respectively provided with third limiting surfaces on both sides along the second direction, the stop structure also includes a groove formed on the boss, the protrusion is adapted to the groove, so that the protrusion cooperates with the groove in both the first state and the second state, so that in the first state the male component and the female component are mutually limited along the second direction, and in the second state the male component and the female component are simultaneously mutually limited along the first direction and the second direction.

[0015] Furthermore, in the connection assembly of the present invention, the protrusions include at least two rows of protrusions arranged along the second direction, and the grooves include at least two mutually parallel grooves arranged along the second direction, and the at least two rows of protrusions are adapted to the at least two grooves so that in the first state, each row of protrusions cooperates with the grooves, thereby limiting the male component and the female component to each other along the second direction.

[0016] Furthermore, in the connection assembly of the present invention, the protrusions include at least two rows of protrusions arranged along the first direction, and the at least two rows of protrusions are adapted to the grooves and the third limiting surface, so that in the second state, at least one row of protrusions cooperates with the grooves, and the remaining protrusions are located outside the third limiting surface, so that the male component and the female component are limited to each other along the first direction and the second direction at the same time.

[0017] Another object of the present invention is achieved through the following technical solution: a keel unit used for tightening a building casting formwork, comprising a keel and embedded male and / or female parts.

[0018] The present invention can achieve the following effects through the above technical solution:

[0019] The technical solution of the present invention can simplify the difficulty of on-site assembly process, reduce the material usage cost of the template clamping system, greatly shorten the time consumption of the assembly process, improve the stability of the keel connection, and make assembly more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the embodiments of the present invention will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, in which:

[0021] Figure 1 A schematic diagram of a double-piece keel unit of the present invention is shown;

[0022] Figure 2 A schematic diagram showing the connection of the keel unit in the first state of the present invention is shown;

[0023] Figure 3 A schematic diagram showing the connection of the keel unit in the second state of the present invention is shown;

[0024] Figure 4 A schematic diagram of a first angle of a public component of the present invention is shown;

[0025] Figure 5 A second angle schematic diagram of the public component of the present invention is shown;

[0026] Figure 6 A schematic diagram of a first angle of a female component of the present invention is shown;

[0027] Figure 7 A second angle schematic diagram of the mother component of the present invention is shown;

[0028] Figure 8 An exploded view of the connection assembly of the present invention in a first state is shown;

[0029] Fig. 9 An exploded view of the connection assembly in the second state of the present invention is shown;

[0030] Fig.10 An exploded view of a connection assembly using a connection member of the first embodiment of the present invention in a first state is shown;

[0031] Fig.11 An exploded view of a connection assembly using a connection member of the second embodiment of the present invention in a first state is shown;

[0032] Fig.12 An exploded view of the keel unit at the external corner of the present invention is shown;

[0033] Fig.13 A schematic diagram of the connection of the keel unit at the external corner of the present invention is shown;

[0034] Fig.14 A schematic diagram of a template clamping system according to a first embodiment of the present invention is shown;

[0035] Fig.15 A schematic diagram of a single-piece keel unit of the present invention is shown;

[0036] Fig.16 A schematic diagram of a template clamping system according to a second embodiment of the present invention is shown.

[0037] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts:

[0038] 10-male part, 11-first supporting part, 12-first body, 13-convex strip, 14-convex block, 141-first protrusion, 142-second protrusion, 143-third protrusion, 144-fourth protrusion, 145-fifth protrusion, 146-sixth protrusion, 15-first through hole, 16-through hole, 161-inclined surface, 17-first notch, 20-female part, 21-second supporting part, 22-second body, 23-boss, 24-groove, 241-first groove, 242-second groove, 243-third groove, 25-second through hole, 26-third through hole , 27-first rib, 28-second rib, 29-opening, 210-through hole, 2101-inclined surface, 2111-second notch, 30-keel, 30'-keel, 31-first double-piece keel, 32-second double-piece keel, 33-third double-piece keel, 34-fourth double-piece keel, 35-fifth double-piece keel, 31'-first single-piece keel, 32'-second single-piece keel, 33'-third single-piece keel, 34'-fourth single-piece keel, 41-first latch, 42-second latch, 5-secondary keel, 6-bolt, 7-nut, 8-pin, 9-pin. DETAILED DESCRIPTION

[0039] The principle and spirit of the present invention will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are provided only to enable those skilled in the art to better understand and implement the present invention, and are not intended to limit the scope of the present invention in any way.

[0040] It should be noted that the directional terms used in this article are uniformly defined, and the “first direction X” is Figure 2 As shown, "first direction X" refers to the direction parallel to the horizontal ground and along the straight wall to be cast; "second direction Y" refers to the direction parallel to the horizontal ground and along another straight wall perpendicular to the straight wall; "third direction Z" refers to the direction perpendicular to the horizontal ground. Those skilled in the art will understand that the above direction definitions are only exemplary, and what is actually expressed is that the two walls along which the "first direction X" and the "second direction Y" are perpendicular to each other. In addition, "up" refers to the direction perpendicular to the horizontal ground and facing the sky, and "down" refers to the direction perpendicular to the horizontal ground and facing the ground.

[0041] The keel unit of the present invention is used to tighten the building casting template. After the template is placed according to the wall structure to be cast, multiple keel units of the present invention are connected to each other to tighten the template. Figure 1 As shown, the keel unit of the present invention includes a keel 30 and a male component 10 and a female component 20 connected at both ends of the keel 30. Keel units of different specifications can be manufactured as needed. The only difference between keel units of different specifications is the length of the keel 30. The male components 10 and the female components 20 at both ends are the same. Therefore, the male component 10 of one keel unit cooperates with the female component 20 of another keel unit to achieve the connection of the two keels.

[0042] The connection between the two keels 30 mainly involves the straight surface, the inner corner and the outer corner. Figure 2 As shown, in the straight surface, the female component 20 of the left keel 30 and the male component 10 of the right keel 30 are assembled with each other. For the convenience of description, the male component 10 and the female component 20 in this case are defined as being assembled in the first state, so that the two keels 30 are relatively connected along the first direction X. Figure 3 As shown, at the inner corner (or outer corner), the male component 10 of the left keel 30 in the figure and the female component 20 of the right keel 30 are assembled with each other. For the convenience of description, the male component 10 and the female component 20 in this case are defined as being assembled in the second state, so that the left keel 30 is connected along the first direction X and the right keel 30 is connected along the second direction Y. Those skilled in the art will understand that the positions of the male component 10 and the female component 20 in the above assembly can be interchanged. Those skilled in the art will immediately understand that the male component 10 or the female component 20 can be connected only at one end of the keel 30, and the other end does not need to be connected; or the male component 10 or the female component 20 can be connected at both ends of the keel 30.

[0043] The assembly principle of the male component 10 and the female component 20 of the present invention is explained in detail below.

[0044] like Figure 4 As shown, the male part 10 includes a first connecting portion 11 and a first body 12 connected to each other. In one embodiment, the first connecting portion 11 is plate-shaped, one side of which extends out of the first body 12 along the first direction X, and the other side is connected to the end of the keel 30, which can be welded or other conventional connection methods. In one embodiment, the first body 12 is plate-shaped, and one side of it is provided with a protruding structure along the third direction Z.

[0045] In one embodiment, the protrusion structure includes a pair of convex strips 13 extending in a first direction X and parallel to each other, and the opposite surfaces of the pair of convex strips 13 are respectively formed with first limiting surfaces 131 with a first distance L1. The protrusion structure also includes a bump 14. In one embodiment, the bump 14 includes a plurality of bump arrays arranged in the first direction X and the second direction Y, wherein the first direction X is defined as a bump column, and the second direction Y is defined as a bump row. Specifically, the first bump column includes a first bump 141, a second bump 142, and a third bump 143, wherein the distance between the first bump 141 and the second bump 142 is, for example, 1 / 2 of the distance between the second bump 142 and the third bump 143, and the specific function will be described in detail below; the second bump column includes only the sixth bump 146, thereby making way for the first through hole 15; the third bump column includes a fourth bump 144 and a fifth bump 145. On the other hand, the first bump row includes the first bump 141 and the fourth bump 144 , the second bump row includes the second bump 142 and the fifth bump 145 , and the third bump row includes the third bump 143 and the sixth bump 146 .

[0046] like Figure 5 As shown, the female part 20 includes a second connecting portion 21 and a second body 22 connected to each other. In one embodiment, the second connecting portion 21 is plate-shaped, one side of which extends out of the first body 22 along the first direction X, and the other side is connected to the end of the keel 30, which can be welded or other conventional connection methods. In one embodiment, the first body 22 is plate-shaped, and one side of it is provided with a limiting structure along the third direction Z.

[0047] In one embodiment, a boss 23 is extended along the third direction Z on one side of the second body 22, and the projection of the boss 23 along the third direction Z is a regular quadrilateral, and second limiting surfaces 231 with a second distance L2 are formed on both sides along the first direction X, and third limiting surfaces 232 with a third distance L3 are formed on both sides along the second direction Y. In one embodiment, a groove 24 extending along the first direction X is formed on the boss 23, and in one embodiment, the groove 24 includes three mutually parallel first grooves 241, second grooves 242 and third grooves 243. The limiting surfaces and grooves constitute the stop structure of the present invention.

[0048] In the present invention, the male component 10 and the female component 20 form a connecting assembly, thereby realizing the connection between the two keels 30. Figure 8As shown, in the first state, the protrusion structure of the male component 10 and the stop structure of the female component 20 are relatively close to each other along the third direction Z until the protrusion structure and the stop structure cooperate with each other. In one embodiment, since the first distance L1 is equal to the second distance L2, the first limiting surface 131 of a pair of convex strips 13 and the second limiting surface 231 of the boss 23 cooperate with each other. At the same time, the first protrusion 141, the second protrusion 142, and the third protrusion 143 are all embedded in the third groove 243, the sixth protrusion 146 is embedded in the second groove 242, and the fourth protrusion 144 and the fifth protrusion 145 are all embedded in the first groove 241, thereby ensuring that the male component 10 and the female component 20 are mutually limited along the second direction Y. At this time, the male component 10 and the female component 20 can slide against each other in the first direction X, so that the two keels 30 can be telescopically adjusted along the first direction X when connected in a straight line.

[0049] like Fig. 9 As shown, in the second state, the protruding structure of the male component 10 and the stop structure of the female component 20 are relatively moved closer to each other along the third direction Z until the protruding structure and the stop structure cooperate with each other. In one embodiment, since the first distance L1 is equal to the third distance L3, the first limiting surface 131 of the pair of convex strips 13 and the third limiting surface 232 of the boss 23 cooperate with each other, thereby ensuring that the male component 10 and the female component 20 are mutually limited along the first direction X. At the same time, the third protrusion 143 and the sixth protrusion 146 are both embedded in the first groove 241, and the second protrusion 142 and the fifth protrusion 145 are both embedded in the third groove 243 to form a first gear position. At this time, the first protrusion 141 and the fourth protrusion 144 are located on a second limiting surface 231 side; or the second protrusion 142 and the fifth protrusion 145 are both embedded in the second groove 242, and the first protrusion 141 and the fourth protrusion 144 are both embedded in the third groove 243 to form a second gear position. At this time, the third protrusion 143 and the sixth protrusion 146 are located on another second limiting surface 231 side. The protrusions and the grooves cooperate with each other, thereby ensuring that the male component 10 and the female component 20 are limited to each other along the second direction Y.

[0050] In one embodiment, a first through hole 15 is provided on the first body 12, and the first through hole 15 can be a long strip hole, so as to ensure that in the first state, the male component 10 and the female component 20 can have a certain range of sliding space along the first direction X; at the same time, a second through hole 25 is provided on the second body 22; the first through hole 15 and the second through hole 25 correspond to each other in the first state, and a connecting member is used to pass through the first through hole 15 and the second through hole 25 at the same time, so that the male component 10 and the female component 20 are fixed along the third direction Z in the first state and the second state.

[0051] In order to further ensure that the mutual limitation of the male component 10 and the female component 20 along the first direction X and / or the second direction Y in the first state and the second state is tighter (the shaking gap is smaller), the bottom of the convex strip 13 and the protrusion 14 in the third direction Z is set to a profile extending outward from top to bottom, and at the same time, the bottom of each limiting surface and the groove 24 is also correspondingly set to a profile extending outward from top to bottom. When the male component 10 and the female component 20 are pressed against each other by the connecting member, the above-mentioned outwardly extending profiles are further squeezed, so that the mutual limitation of the male component 10 and the female component 20 is tighter, and the tight connection effect is close to the welding effect, thereby avoiding shaking during the casting process.

[0052] like Fig.10 As described, in one embodiment, a pin connector can be used to pass the pin 9 from bottom to top through the first through hole 15 and the second through hole 25, and then the wedge-shaped pin piece 8 is inserted into the opening of the pin 9 above the male component 10, and the male component 10 and the female component 20 are pressed against each other along the third direction Z using the inclined surface of the wedge-shaped pin piece 8.

[0053] like Fig.11 As shown, in one embodiment, a threaded connector can be used. In this case, the second through hole 25 has an internal thread. The inner surface of the second through hole 25 can be threaded, or a nut 7 can be fixedly or movably arranged under the second through hole 25. The bolt 6 penetrates the first through hole 15 and the second through hole 25, and the male part 10 and the female part 20 are pressed against each other along the third direction Z through the threaded connection.

[0054] The connection assembly of the present invention can also be used to connect two keels 30 at the outer corner of the template. Figure 6 , 12 As shown in Figures 13 and 14, the second body 22 is provided with a third through hole 26 at one end away from the second connecting portion 21 along the first direction X. In one embodiment, the third through hole 26 is a long hole. The keel 30 has openings on both sides. The size of the opening in the third direction Z is larger than the size of the second body 22 in the third direction Z, so as to ensure that the second body 22 can pass through the opening from one side of the keel 30 to the other side. The distance between the third through hole 26 and the second connecting portion 21 is larger than the size of the keel 30 along the second direction Y, so as to ensure that when the second body 22 passes from one side of the keel 30 to the other side along the second direction Y, the third through hole 26 can be exposed from the other side of the keel 30, so that the first pin 41 can pass through the third through hole 26 outside the keel 30. At this time, the first pin 41 is used to tighten the keel 30 to its corresponding template. At the same time, a through hole is opened on the keel 30 so that the second pin piece 42 can penetrate into the keel 30 through the through hole along the third direction Z, and one side edge of the second pin piece 42 is used to resist one side edge of the mother component 20, thereby tightening the keel 30 of the mother component 20 to its corresponding template.

[0055] In one embodiment, since the female component 20 can be used to pass through the keel 30 from the side at the positive corner to support the keel 30, in order to improve the connection strength between the first connection part 21 and the second connection part 22 of the female component 20, as shown in FIG. Figure 7 As shown, a support rib 27 extends from the second connection portion 21 along the first direction X away from the second connection portion 21, and the extended portion of the support rib 27 is connected to the second body 22. In another embodiment, in order to improve the connection strength between the first connection portion 21 and the second connection portion 22 of the female component 20, as shown in FIG. Figure 6 As shown, a support rib 28 extends from the second body 22 along the third direction Z away from the second body 22, and the extended portion of the support rib 28 is connected to the second connecting portion 21. Those skilled in the art will appreciate that the above-mentioned support rib structure may also be used between the first connecting portion 11 and the first body portion 12 of the male component 10.

[0056] In one embodiment, Figure 7 As shown, in order to further reduce the weight of the female component 20 and also reduce the material cost, a hollow structure 29 is provided on the second body 22 at the boss 23 .

[0057] In one embodiment, Figure 5 As shown, in order to further reduce the weight of the mother component 20, especially to avoid the phenomenon of paint retention during the varnishing process, a through hole 16 is provided in the first connecting portion 11, and the first connecting portion 11 transitions to the through hole 16 through an inclined surface 161. In addition, in another embodiment, as Figure 7 As shown, the second connection part 21 is provided with a through hole 210, and the second connection part 21 transitions to the through hole 210 through an inclined surface 2101. By opening the through holes 16 and 210, when the length direction of the keel unit connected with the male part 10 and the female part 20 at both ends is perpendicular to the ground and is suspended after being dipped in paint, the paint can flow through the through hole 16 or 210 along the inclined surface 161 or 2101 and out, thereby avoiding unnecessary paint remaining on the plate-like plane of the first connection part 11 or the second connection part 21.

[0058] In one embodiment, in order to make way for the secondary keel 5 in the second state, as Figure 4 and 7 As shown, a first notch 17 is provided at a corner of the first body 12 away from the first connection portion 11 along the first direction X, and a second notch 211 is provided at a corner of the second body 22 away from the second connection portion 21 along the first direction X. Fig.14As shown, the size and position of the first notch 17 and the second notch 211 are adapted to allow the first notch 17 and the second notch 211 to give way to the secondary keel 5 in the second state (at the inner corner), or the first notch 17 and the second notch 211 are used to limit the secondary keel 5 from the first direction X and the second direction Y. Those skilled in the art will understand that the secondary keel 5 can be a wooden square of a wooden formwork, or can be a connecting plate on both sides of an aluminum formwork.

[0059] In one embodiment, the male component 10 and the female component 20 may be integrally formed by casting. In another embodiment, the protruding structure of the male component 10 and the stopper structure of the female component 20 may also be made by cutting. In another embodiment, the first connecting portion 11 and the first body 12 may be welded, and the second connecting portion 21 and the second body 22 may be welded.

[0060] like Fig.14 As shown, the male component 10 and the female component 20 of the present invention can be connected with the keel 30 as a keel unit in the factory and then transported to the site for direct assembly. Alternatively, the male component 10, the female component 20 and the keel 30 can be connected on site. In one embodiment, when tightening the building casting formwork, firstly, the corner area is used as a reference, and the first double-piece keel 31 and the second double-piece keel 32 are connected at the inner corner, and the third double-piece keel 33 and the fourth double-piece keel 34 are connected at the outer corner, and then the second double-piece keel 32 and the fifth double-piece keel 35 are connected at the locking mouth, and the third double-piece keel 33 and the first double-piece keel 31 are connected at the locking mouth, thereby completing the connection of the entire tightening system.

[0061] In one embodiment, the keel 30 can be designed as a standard part with only a few fixed lengths. Through the connection assembly of the present invention, it can be applied to the formwork tightening of most conventional structures of building cast walls, without the need for separate production of keel units of special sizes, which greatly reduces production costs.

[0062] In another embodiment, when the wall to be cast has a "W"-shaped structure, or other similar structures require the use of a keel with a smaller length, a keel 30' with a single-piece structure can be produced separately, such as Fig.15 As shown, the male component 10 or the female component 20 may be connected to only one end of the keel 30' formed by a piece of profile, or may be connected to the male component 10 and the female component 20 at both ends, or may be connected to the male component 10 or the female component 20 at both ends. Of course, the production cost is optimal when the male component 10 or the female component 20 is connected to only one end. Fig.16As shown, when tightening the building casting formwork, first use the corner area as a reference, and use the connection assembly of the present invention to connect the first double-piece keel 31 with the first single-piece keel 31' at the inner corner, and connect the third double-piece keel 33 with the third single-piece keel 33' at the inner corner, then connect the first single-piece keel 31' with the second double-piece keel 32 at the outer corner, and connect the third single-piece keel 33' with the fourth double-piece keel 34 at the outer corner, and finally perform the end locking connection to complete the connection of the entire tightening system.

[0063] The connection assembly of the present invention can be used to connect two keels at the straight surface and the corners at the same time. There is no need to distinguish different accessories and connection methods for different areas, which greatly reduces the difficulty of the assembly process and improves the assembly process time. When encountering a wall structure to be cast with more corner structures, since the connection structure only requires two accessories, the male part and the female part, the material use cost is reduced, and the parts standardization of the template clamping system is also achieved. Finally, due to the use of a raised structure and a stopper structure for cooperation, the connection between the two keels at the straight surface has sufficient limit perpendicular to the wall direction, and has sufficient limit along the two keel directions at the corner, ensuring the stability of the keel connection. In addition, due to the stable connection, two or more keels can be connected and combined into a whole, and directly fixed on the wall, which is more convenient to assemble.

[0064] The foregoing description is not intended to be exhaustive nor to limit the invention to the exact form disclosed, and various variations and modifications may exist in accordance with the above teachings or may be obtained from the practice of the invention. These embodiments are selected and described to illustrate the principles of the invention and its practical application, so that those skilled in the art can utilize the invention in various embodiments and various modifications suitable for the specific purpose contemplated.

Claims

1. A connecting assembly for connecting two keels, characterized in that: The connection assembly comprises a male component and a female component, and the male component and the female component can be assembled into a first state and a second state, wherein the first state is suitable for connecting the two keels relative to each other along a first direction (X), and the second state is suitable for connecting one keel along the first direction (X) and the other keel along a second direction (Y) perpendicular to the first direction (X); The male component includes a protruding structure in a third direction (Z) perpendicular to the first direction (X) and the second direction (Y), respectively, and the female component includes a stop structure in the third direction (Z). The protruding structure is adapted to the stop structure so as to limit the male component and the female component to each other along the second direction (Y) in the first state, and limit the male component and the female component to each other along the first direction (X) and the second direction (Y) in the second state. The protruding structure includes a convex strip extending along the first direction (X). The male component includes a first connecting portion and a first body connected to each other, the first connecting portion is suitable for being connected to the end of the keel, and the first body is provided with the protruding structure. And / or the female part comprises a second connecting portion and a second body connected to each other, the second connecting portion is suitable for connecting to the end of the keel, and the second body (22) is provided with the stop structure; A first notch is provided at a corner of one end of the first body away from the first connecting portion along the first direction (X), and a second notch is provided at a corner of one end of the second body away from the second connecting portion along the first direction (X), and the first notch (17) is adapted to the second notch so as to cooperate with the second notch to give way or limit the corner template system parts in the second state; The protrusion structure includes a protrusion, and the female part includes a boss extending along the third direction (Z), and the boss is respectively provided with a third limiting surface on both sides along the second direction (Y). The stop structure also includes a groove formed on the boss, and the protrusion is adapted to the groove so that the protrusion cooperates with the groove in both the first state and the second state, so that in the first state, the male part and the female part limit each other along the second direction (Y), and in the second state, the male part and the female part limit each other along the first direction (X) and the second direction (Y) at the same time.

2. The connection assembly according to claim 1, characterized in that: A support rib extends from the second connection portion along the first direction (X) away from the second connection portion, and an extended portion of the support rib is connected to the second body.

3. The connection assembly according to claim 1, characterized in that: A support rib extends from the second body along the third direction (Z) away from the second body, and an extended portion of the support rib is connected to the second connecting portion.

4. The connection assembly according to claim 1, characterized in that: The second body is provided with a boss extending along the third direction (Z), and the second body is provided with a hollow structure at the boss.

5. The connection assembly according to claim 1, characterized in that: The first connection portion is provided with a through hole, and the first connection portion transitions to the through hole through an inclined surface; and / or the second connection portion is provided with a through hole, and the second connection portion transitions to the through hole through an inclined surface.

6. The connection assembly according to claim 1, characterized in that: The protrusions include at least two rows of protrusions arranged along the second direction (Y), and the grooves include at least two mutually parallel grooves arranged along the second direction (Y). The at least two rows of protrusions are adapted to the at least two grooves so that in the first state, each row of protrusions cooperates with the grooves, thereby limiting the male component and the female component to each other along the second direction (Y).

7. The connection assembly according to claim 1, characterized in that: The protrusions include at least two rows of protrusions arranged along the first direction (X), and the at least two rows of protrusions are adapted to the grooves and the third limiting surface, so that at least one row of the protrusions cooperates with the grooves in the second state, and the remaining protrusions are located outside the third limiting surface, so that the male component and the female component are limited to each other along the first direction (X) and the second direction (Y) at the same time.

8. A keel unit, used for tightening a building casting formwork, comprising a keel, characterized in that: It also includes a connection assembly as described in any one of claims 1-7.

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