CN210483003U - Plane template and template connecting mechanism thereof - Google Patents

Abstract

The utility model relates to a template coupling mechanism and combination with plane template thereof. The template connecting mechanism comprises a template wishful lock and template supporting rods matched with the template wishful lock, the template wishful lock comprises a cylindrical wishful lock body, a head and a locking part, the template supporting rods comprise connecting ports at two ends of the supporting rod body and the supporting rod body, the connecting ports are of a long and narrow structure, the cross section of the connecting ports is composed of a rectangle and a circular structure, the circular structure is in the middle, and the rectangular structure is at two ends. The plane template and the template connecting mechanism combination thereof comprise the template connecting mechanism of the plane template, the plane template comprises a flat plate and a frame vertically arranged on the back of the flat plate, and a flat plate through hole vertically penetrating through the flat plate is arranged on the flat plate; the flat plate through hole is of a long and narrow structure, the cross section of the flat plate through hole is composed of a rectangular structure and a circular structure, the circular structure is arranged in the middle, and the rectangular structure is arranged at two ends. The matching among the template lock, the template supporting rod and the plane template is good, and the use is convenient.

Description

Plane template and template connecting mechanism thereof

Technical Field

The utility model relates to a construction equipment, the plane template that concretely relates to used in the construction process and the subassembly of installation usefulness thereof.

Background

The building form is an essential device in the process of pouring cement concrete in building construction, and is generally manufactured according to design requirements, so that a concrete structure and a member are formed according to specified positions and geometric dimensions, the correct positions of the concrete structure and the member are kept, and the self weight of the building form and external loads acting on the building form are borne. One can produce the formwork in advance in a factory, for example, plastic, and then quickly assemble and assemble various required formwork structures in a construction site. A planar template refers to a template unit that is primarily intended to be assembled into a plane.

The plastic building template is widely applied to building sites due to the characteristics of low cost, light weight and the like, and modular plastic templates on the market are generally rectangular or oblong. The plastic formwork inevitably has certain deformation in the use, the dismouting of plastic formwork is frequent, the connecting device that the design is fit for, the effect that realizes durable use, convenient high-efficient dismantlement and equipment is the difficult problem in current building templates field, can not solve betterly always. The connecting device of the existing building template is troublesome to disassemble by using a screw structure or is in an integral plastic structure, but the plastic structure is not firm, the arrangement of the template connecting hole is not reasonable, so that the bearing capacity of the connecting part is poor, and the connecting device is frequently broken or the template main body is damaged.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the defects in the prior art are overcome, and the plane template and the template connecting mechanism thereof are provided.

Therefore, the utility model provides a following technical scheme:

a template connecting mechanism comprises a template wishful lock and a template supporting rod matched with the template wishful lock, wherein the template wishful lock comprises a cylindrical wishful lock body, a head part and a locking part, the head part is arranged at one end of the wishful lock body, the cross section area of the head part is larger than that of the wishful lock body, and the locking part is arranged at the other end of the wishful lock body; the locking part is a rectangular convex block which is arranged on the circumference of the end part of the cylindrical lucky lock body and protrudes along the radial direction; the number of the locking parts is 2, and the protruding directions of the 2 rectangular locking parts form an included angle of 180 degrees; the template support rod comprises a support rod body and connectors at two ends of the support rod body, the connectors are of a long and narrow structure, the cross section of each connector is composed of a rectangular structure and a circular structure, the circular structure is arranged in the middle, and the rectangular structures are arranged at two ends.

Furthermore, the template supporting rod is of an axial hollow structure, the connecting port further comprises an extending body extending from the end face to the supporting rod body, and the extending body is of a non-hollow structure on the whole.

Further, the length of the extension body of the template support rod connecting port is half of the length of the template lock body.

Further, the template Ruyi lock further comprises a matching part, the matching part is arranged at one end, far away from the Ruyi lock body, of the head, and the matching part can be a triangle, a quadrangle, a pentagon and other polygons which are convex or concave.

Further, the template lock is preferably made of stainless steel.

Further, the utility model also provides a plane template and template connecting mechanism combination thereof, including the plane template and the template connecting mechanism of one of the above, the plane template includes the flat board and the frame that sets up perpendicularly at the flat board back, is equipped with the connecting hole on the frame, is provided with the flat board through-hole that runs through the flat board perpendicularly on the flat board; the method is characterized in that: the flat plate through hole is of a long and narrow structure, the cross section of the flat plate through hole is composed of a rectangular structure and a circular structure, the circular structure is arranged in the middle, and the rectangular structure is arranged at two ends.

Furthermore, the flat plate through hole also comprises a flat plate through hole extending body which is arranged on the back surface of the flat plate and extends towards the direction vertical to the flat plate along the outer edge of the orifice of the flat plate through hole.

Furthermore, the flat template also comprises a flat plate through hole reinforcing rib which is arranged on the back of the flat plate and extends towards the direction which is vertically far away from the flat plate, the flat plate through hole reinforcing rib comprises a circular reinforcing rib, the circular reinforcing rib is in a hollow cylinder shape, and the flat plate through hole is contained in the center of the cylinder.

Furthermore, the plate through hole reinforcing rib also comprises a main reinforcing rib which is a plate-shaped object, the main reinforcing rib is parallel to the transverse frame of the plane template, two ends of the main reinforcing rib are intersected with the vertical frame of the plane template, and the main reinforcing rib and the circular reinforcing rib are intersected at the position near the circle center of the circular reinforcing rib; the plate through hole reinforcing rib also comprises an auxiliary reinforcing rib which is a plate-shaped object and is arranged near the circle center of the circular reinforcing rib and at a position vertical to the main reinforcing rib; the length of the auxiliary reinforcing rib is larger than the diameter of the circular reinforcing rib.

Furthermore, a flat plate cavity with the diameter larger than that of the flat plate through hole is also formed at the end, close to the front surface of the flat plate, of the flat plate through hole; the flat template also comprises a through hole cover plate matched with the flat cavity in size, and the front surface of the flat plate is a generally flat plane after the through hole cover plate is covered; the flat plate through hole is of a long and narrow structure, the cross section of the flat plate through hole is composed of a rectangular structure and a circular structure, the circular structure is arranged in the middle, and the rectangular structure is arranged at two ends; the length of the flat plate through hole extension body is half of the length of the template wishful lock body.

The utility model discloses a template coupling mechanism, convenient assembling through the cooperation of the connector shape of template wishful lock and template support pole, plays fine effect. Particularly, the template lock is made of stainless steel materials, so that the size is small and the strength is high; the utility model discloses template coupling mechanism is particularly suitable for can fixed plane template in narrow spaces such as similar floorbar mould construction, does not need long threaded rod, reduces the required space of construction. The shape and the size of the flat plate through hole of the flat template are matched with the template lock locking part as same as the support rod connecting port; the arrangement of the flat plate cavity is convenient for positioning and fixing the template supporting rod, and the structure is firm due to the flat plate through hole reinforcing rib structure; the length of the connector extending body of the template supporting rod is consistent with that of the connecting hole extending body of the plane template, and the length of the connector extending body of the template supporting rod is half of that of the template free lock body, so that the template free lock can clamp the template supporting rod and the plane template tightly without loosening. More importantly, the flat template and the template connecting mechanism combined template lock, the template supporting rod and the flat template of the utility model are convenient to use, and the composite effect is exerted; the connecting mechanism has the advantages of standard specification, mutually matched size and shape and good matching property.

Drawings

FIG. 1 is a perspective view of a template ruyi lock according to the present invention;

FIG. 2 is a front, rear elevational view of the template Ruyi Lock of FIG. 1;

FIG. 3 is a schematic bottom and top view of the template Ruyi Lock of FIG. 1;

FIG. 4 is a left side elevational view of the template Ruyi Lock of FIG. 1;

FIG. 5 is a right side elevational view of the template Ruyi Lock of FIG. 1;

FIG. 6 is a perspective view of the formwork support bar of the present invention

FIG. 7 is a schematic view of the formwork support rod of the present invention, showing its front, rear, top and bottom views

FIG. 8 is a schematic view of the formwork support bar in left and right views according to the present invention

Figure 9 is a schematic view of the cross-sectional view A-A of the formwork support bar of the present invention as shown in figure 8

Fig. 10 is a perspective view of a flat form according to the present invention;

FIG. 11 is a schematic front view of the planar template of FIG. 10;

FIG. 12 is a schematic bottom view of the flat stencil of FIG. 10;

FIG. 13 is a schematic perspective view of the planar template taken in the direction G as shown in FIG. 12;

FIG. 14 is a left side view of the planar template of FIG. 10;

FIG. 15 is a schematic top view of the planar template of FIG. 10;

FIG. 16 is a right side elevational view of the planar template of FIG. 10;

FIG. 17 is a schematic cross-sectional view of the flat panel mold of FIG. 10 taken along line C-C, D-D, E-E, F-F of FIG. 11

FIG. 18 is a schematic view of the flat panel mold of FIG. 10 taken along the line A-A of FIG. 11

FIG. 19 is a schematic cross-sectional view of the flat stencil taken along line B-B of FIG. 12

FIG. 20 is a schematic view of the assembly of the flat form, form support rods, and form locks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back) are provided in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first", "second", may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1-5, in addition to the formwork lifting lock 30 functioning as a formwork connecting mechanism in combination with the stay bar 40, the formwork lifting lock 30 can be used as a connecting device alone to connect and lock two horizontally juxtaposed flat formworks through the connecting hole 4. The template ruyi lock 30 comprises a cylindrical ruyi lock body 301, a head part 302 and a locking part 303, wherein the head part is arranged at one end of the ruyi lock body, and the locking part 303 is arranged at the other end of the ruyi lock body; the template ruyi lock further comprises a matching part 304, wherein the matching part 304 is convexly arranged at one end of the head part 302 far away from the ruyi lock body 301; the locking portion 303 is a rectangular projection provided on the circumference of the end of the cylindrical lock body 301 in a radial direction. In some embodiments, the number of the locking portions 303 is 2, and the protruding directions of the 2 rectangular locking portions 303 form an angle of 180 ° with each other. In some embodiments, the mating portion 304 is triangular. In some embodiments, the template, preferably a lock (not shown), further comprises a template wrench including a recess that mates with the mating portion. In some embodiments, the template lock is preferably made of stainless steel, which is beneficial to obtaining the best mechanical strength in a smaller size. In some embodiments, the locking portion 303 is tapered or wedge-shaped, with the end proximate to the lock body 301 being larger and the end distal to the lock body 301 being smaller in size, forming a taper or wedge. This minimizes the use of raw materials.

Referring to fig. 6 to 9, the formwork support bar 40 includes a support bar body 401 and connection ports 402 at both ends of the support bar body, which are of an elongated structure having a cross section formed by a rectangular structure and a circular structure, the circular structure being in the middle and the rectangular structure being at both ends. The template supporting rod is of an axial hollow structure, the connector also comprises an extension body 402-1 and a connector opening 402-2, wherein the extension body extends from the end face to the supporting rod body, and the extension body is solid and can be partially hollow but is of a non-hollow structure as a whole, so that the connector is convenient to be fixedly connected with other templates, and the mechanical strength of the connector is convenient to improve; the opening 402-2 of the connection port is an elongated structure with a cross-section consisting of a rectangular and a circular structure, the circular structure being in the middle and the rectangular structure being at the two ends. Of course, the supporting rod body is not an axial hollow structure as a whole, but only a cavity is arranged near the connecting port, and the diameter of the cavity is larger than the length of the connecting port. Referring to fig. 9, 4 outwardly protruding annular reinforcing ribs 403 and 4 axial reinforcing ribs 404 are provided at both ends of the support bar body.

Referring to fig. 10-18, a planar form 10 is rectangular or oblong in shape and includes a planar sheet 1, reinforcement members 2, and a frame 3. The flat plate 1 is a rectangular plate-shaped object, the front surface of the flat plate is a plane with a substantially flat surface, and the plane is contacted with cement concrete when being used as a building template; the flat plate 1 is also provided with a flat plate through hole 7, and a flat plate cavity 7-1 with the diameter larger than that of the flat plate through hole 7 is also arranged in the direction of the flat plate through hole 7, which is close to the front end of the flat plate 1; the size of the through hole cover plate 7-2 is matched with that of the flat plate cavity 7-1 (namely the cross section is the same in shape, and the height in the vertical direction is almost the same), and the front surface of the flat plate 1 is integrally a generally flat plane after the through hole cover plate 7-2 is covered. The plate through hole 7 is contained in the center of the cylinder by the plate through hole reinforcing ribs 8, and the mechanical strength of the plate through hole 7 is enhanced. The plate through hole reinforcing ribs 8 comprise circular reinforcing ribs 8-1, main reinforcing ribs 8-2 and/or auxiliary reinforcing ribs 8-3 and circle center reinforcing ribs 8-4; the circular reinforcing rib 8-1 is in a hollow cylindrical shape and is arranged vertical to the flat plate, and the diameter of the cylinder is larger than the length of the through hole of the flat plate, so that the through hole of the flat plate is contained in the center of the cylinder; the vertical flat plate 1 is arranged (namely the height of the cylinder is vertical to the flat plate, the bottom surface of the cylinder is on the plane of the flat plate), the main reinforcing rib 8-2 is a plate-shaped object, the main reinforcing rib is parallel to the transverse frame of the flat template, two ends of the main reinforcing rib are intersected with the vertical frame of the flat template, and the main reinforcing rib and the circular reinforcing rib are intersected at the position near the circle center of the circular reinforcing rib; in the embodiment, each flat plate through hole 7 is provided with 2 main reinforcing ribs 8-2, the main reinforcing ribs 8-2 are intersected at the position of the circular reinforcing rib 8-1 near the circle center, and two ends of the main reinforcing rib 8-2 are connected with the frame 3; the auxiliary reinforcing ribs 8-3 are plate-shaped objects vertical to the flat plate 1 and are arranged near the circle center of the circular reinforcing rib 8-1 and at positions avoiding passing through a through hole of the flat plate, and the auxiliary reinforcing ribs 8-3 are vertical to the main reinforcing ribs 8-2; the length of the auxiliary reinforcing rib 8-3 is larger than the diameter of the circular reinforcing rib 8-1, in order to save the plastic consumption, the length of the auxiliary reinforcing rib 8-3 is not set to be connected with the frames at the two ends, and the mechanical strength can be better, and certainly, the auxiliary reinforcing rib can be set to be connected with the frames to achieve better mechanical strength. The circle center reinforcing rib 8-4 comprises a first strip rib body and a second strip rib body which are axially arranged along the bottom surface of the circular reinforcing rib 8-1 in the circular reinforcing rib 8-1 and are intersected with the circumferential surface of the circular reinforcing rib 8-1, wherein the first strip rib body is 2 strips (the number of the first strip rib bodies can be 1, 2 or more) which are arranged in parallel and are two parallel straight lines circumscribed with the outer edge of the flat plate through hole 7; the second strip-shaped rib body passes through the circle center of the flat plate through hole and is a strip-shaped object which is vertical to the first strip-shaped rib body, and the second strip-shaped rib body is divided into two sections by the flat plate through hole. The frame 3 of the flat template 10 is a plate-shaped object and is vertically arranged at the peripheral edge of the back surface of the flat plate 1, the frame 3 comprises an outer layer frame 3-1 and an inner layer frame 3-2, and the inner layer frame 3-2 is nested inside the outer layer frame 3-1; the outer frame 3-1 and the inner frame 3-2 have the same height (i.e., the distance of the frames from the vertical direction of the flat panel). In order to obtain the highest mechanical strength with the least plastic, the outer frame is thicker than the inner frame. The periphery of the frame 3 is provided with a plurality of connecting holes 4 for connecting with other plane templates, preferably, each side is provided with 2-3 connecting holes so as to be convenient for connecting and locking 2 templates by using a random lock. The connecting hole 4 penetrates through the outer layer frame 3-1 and the inner layer frame 3-2. A plurality of reinforcing blocks 5 are arranged between the outer layer frame and the inner layer frame, the reinforcing blocks 5 are arranged between the outer layer frame and the inner layer frame and connected with the outer layer frame and the inner layer frame, and the upper edges of the reinforcing blocks 5 (namely the edge ends of the reinforcing blocks far away from the flat plate direction) are lower than or close to the upper edges of the frames 3. The connecting hole 4 is a hollow column and comprises a connecting hole extending body 4-1, and the connecting hole extending body is arranged at the outer edge of a connecting hole orifice between the outer layer framework and the inner layer framework and is connected with the outer layer framework and the inner layer framework; the connecting hole orifice 4-2 is the opening of the hollow column. The upper end of the connecting hole 4 (i.e. far away from the flat plate end), in particular the upper end of the connecting hole extension body 4-1, is provided with an orifice reinforcing block which extends from the upper end of the connecting hole to the top of the frame (i.e. far away from the flat plate end). The lower end of the connecting hole 4 (namely, the lower end close to the flat plate), specifically, the lower end of the connecting hole extending body 4-1 is also provided with a reinforcing column 6, the reinforcing column 6 is of a hollow structure, is connected between the outer layer frame and the inner layer frame, and the cross section shape of the reinforcing column is matched with the shape of the connecting hole (namely, the edge of the reinforcing frame is arranged along the edge of the connecting hole and always keeps a certain distance, and the edge pattern of the reinforcing frame changes along with the change of the edge pattern of the connecting hole). The reinforcing column is provided with a through hole at the corresponding position of the inner layer frame (namely the position of the joint of the reinforcing column and the inner layer frame).

Referring to fig. 20, in use, two flat forms 10 are placed in opposition to each other so that the plate through holes 7 are placed in opposition, in a normal case two flat forms are placed in full face-to-face parallel, the plate through holes 7 in the middle of two flat forms are placed in opposition (i.e., in a line perpendicular to the plates to each other), and the two flat forms are connected by form support rods 40 and form locks 30. The utility model discloses a template lock of Ruyi 30 except that get up with vaulting pole 40 and form template coupling mechanism and play above-mentioned effect, template lock of Ruyi 30 can also regard as connecting device alone to connect two level plane templates side by side through connecting hole 4 and lock solid. The connection strength between two plane formworks can be enhanced by the formwork support rod 40, the formwork lock 30 and the acting force between the plane formworks besides the connection of the plane of the flat plate 1 through the connecting hole; and the acting force between the formwork support rods 40 and the flat formworks 10 can ensure that a sufficient distance is kept between two opposite flat formworks 10 for casting the wall, and the size of the support rods can be adjusted according to the thickness of the wall to be cast. The connecting ports of the template supporting rods and the connecting holes of the plane template are consistent in shape and size, are of a long and narrow structure, and the cross section of each connecting port is composed of a rectangular structure and a circular structure, the circular structure is arranged in the middle, and the rectangular structures are arranged at two ends; the shape and size of which is matched with the locking part of a template lock. The lengths of the connector extending body of the template supporting rod and the length of the connecting hole extending body of the plane template are also consistent and are half of the length of the template lock body, so that the template lock can clamp the template supporting rod and the plane template tightly without loosening, and the strength of the template lock is greatly improved by adopting stainless steel materials.

The utility model discloses a template coupling mechanism, convenient assembling through the cooperation of the connector shape of template wishful lock and template support pole, plays fine effect. Particularly, the template lock is made of stainless steel materials, so that the size is small and the strength is high; the utility model discloses template coupling mechanism is particularly suitable for can fixing the plane template in narrow spaces such as similar floorbar mould construction, does not need long screw rod, reduces the required space of construction. The flat plate through holes and the flat plate cavities of the flat templates are convenient for positioning and fixing the template supporting rods, and the structure is firm due to the flat plate through hole reinforcing rib structure; the length of the connector extending body of the template supporting rod is consistent with that of the connecting hole extending body of the plane template, and the length of the connector extending body of the template supporting rod is half of that of the template free lock body, so that the template free lock can clamp the template supporting rod and the plane template tightly without loosening. More importantly, the flat template and the template connecting mechanism combination thereof of the utility model have convenient use among the template lock, the template supporting rod and the flat template, and good combination effect; the connecting mechanism has the advantages of standard specification, mutually matched size and shape and good matching property.

Claims (10)

1. A template connecting mechanism comprises a template wishful lock and a template supporting rod matched with the template wishful lock, and is characterized in that the template wishful lock comprises a cylindrical wishful lock body, a head part and a locking part, wherein the head part is arranged at one end of the wishful lock body, the cross section area of the head part is larger than that of the wishful lock body, and the locking part is arranged at the other end of the wishful lock body; the locking part is a rectangular convex block which is arranged on the circumference of the end part of the cylindrical lucky lock body and protrudes along the radial direction; the number of the locking parts is 2, and the protruding directions of the 2 rectangular locking parts form an included angle of 180 degrees; the template support rod comprises a support rod body and connectors at two ends of the support rod body, the connectors are of a long and narrow structure, the cross section of each connector is composed of a rectangular structure and a circular structure, the circular structure is arranged in the middle, and the rectangular structures are arranged at two ends.

2. The template attachment mechanism of claim 1, wherein: the template supporting rod is of an axial hollow structure, the connector further comprises an extending body extending from the end face to the supporting rod body, and the extending body is of a non-hollow structure on the whole.

3. The template attachment mechanism of any of claims 1-2, wherein: the length of the extension body of the template support rod connecting port is half of the length of the template lock body.

4. The template attachment mechanism of claim 3, wherein: the template ruyi lock further comprises a matching portion, the matching portion is arranged at one end, far away from the ruyi lock body, of the head portion, and the matching portion is of a protruding triangle shape.

5. The template attachment mechanism according to claim 4, wherein the template lock is stainless steel.

6. A flat template and a template connecting mechanism combination thereof, comprising the flat template and the template connecting mechanism as claimed in any one of claims 1 to 5, wherein the flat template comprises a flat plate and a frame vertically arranged on the back of the flat plate, the frame is provided with a connecting hole, and the flat plate is provided with a flat plate through hole vertically penetrating through the flat plate; the method is characterized in that: the flat plate through hole is of a long and narrow structure, the cross section of the flat plate through hole is composed of a rectangular structure and a circular structure, the circular structure is arranged in the middle, and the rectangular structure is arranged at two ends.

7. The combination of claim 6 wherein: the flat plate through hole also comprises a flat plate through hole extending body which is arranged on the back of the flat plate and extends to the direction vertical to the flat plate along the outer edge of the orifice of the flat plate through hole.

8. The combination of claim 7 wherein: the flat template further comprises a flat plate through hole reinforcing rib which is arranged on the back of the flat plate and extends towards the direction which is perpendicular to and away from the flat plate, the flat plate through hole reinforcing rib comprises a circular reinforcing rib, the circular reinforcing rib is in a hollow cylinder shape, and the flat plate through hole is contained in the center of the cylinder.

9. The combination of a planar template and its template-connecting mechanism as set forth in claim 8, wherein: the reinforcing rib of the flat plate through hole also comprises a main reinforcing rib, wherein the main reinforcing rib is a plate-shaped object, is parallel to the transverse frame of the plane template, and has two ends intersected with the vertical frame of the plane template, and the main reinforcing rib and the circular reinforcing rib are intersected at the position near the circle center of the circular reinforcing rib; the plate through hole reinforcing rib also comprises an auxiliary reinforcing rib which is a plate-shaped object and is arranged near the circle center of the circular reinforcing rib and at a position vertical to the main reinforcing rib; the length of the auxiliary reinforcing rib is larger than the diameter of the circular reinforcing rib.

10. The combination of a planar template and its template-connecting mechanism as set forth in claim 9, wherein: the end, close to the front surface of the flat plate, of the flat plate through hole is also provided with a flat plate cavity with the diameter larger than that of the flat plate through hole; the flat template also comprises a through hole cover plate matched with the flat cavity in size, and the front surface of the flat plate is a generally flat plane after the through hole cover plate is covered; the flat plate through hole is of a long and narrow structure, the cross section of the flat plate through hole is composed of a rectangular structure and a circular structure, the circular structure is arranged in the middle, and the rectangular structure is arranged at two ends; the length of the flat plate through hole extension body is half of the length of the template wishful lock body.

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