CN212128889U

CN212128889U - Formwork assembly

Info

Publication number: CN212128889U
Application number: CN202020738288.3U
Authority: CN
Inventors: 李啸晨; 常永健; 李东敏; 刘慧�; 李建东
Original assignee: Haiwei Engineering Construction Co Ltd of FHEC of CCCC; CCCC First Highway Engineering Co Ltd
Current assignee: Haiwei Engineering Construction Co Ltd of FHEC of CCCC; CCCC First Highway Engineering Co Ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-12-11
Anticipated expiration: 2030-05-07

Abstract

The utility model provides a template component relates to construction technical field. The utility model provides a template component includes exterior sheathing and pull rod. A first thread is arranged on the rod body of the pull rod and extends spirally along the length direction of the pull rod. The position department that is close to one of them side on the face of exterior sheathing is provided with connecting portion, is provided with the screw hole that corresponds with first screw thread on the connecting portion, and the first screw thread department of pull rod can be in the screw hole on connecting portion by threaded connection. The utility model discloses the in-process of the interior forms and the exterior sheathing of adopting construction component departments such as fixed guardrail of counter pull rod that exist among the prior art, the operation space that is close to bottom department of the exterior sheathing of construction component departments such as guardrail is narrow when being difficult to walk around behind the exterior sheathing and install the nut on the counter pull rod in this department's ann, and the nut easily drops and causes the technical problem of potential safety hazard.

Description

Formwork assembly

Technical Field

The utility model belongs to the technical field of the construction technique and specifically relates to a template component is related to.

Background

The upper traffic lane and the lower traffic lane of the existing bridge are arranged at intervals, one side of the upper traffic lane, which is close to the lower traffic lane, is provided with a guardrail, and one side of the lower traffic lane, which is close to the upper traffic lane, is also provided with a guardrail. When the two guardrails are of a reinforced concrete structure or a concrete structure, the process of constructing the guardrail is as follows: the method comprises the steps of fixing an outer template at one side of a guardrail close to a lane and fixing an inner template at one side of the guardrail far away from the lane, pouring concrete between the outer template and the inner template after the outer template and the inner template are fixed, and forming the guardrail after the concrete is formed.

In the process of fixing the inner and outer formworks at the guard rail, one of the members for reinforcing the inner and outer formworks is a tie rod provided with threads on a rod body. The position that is close to the top of inner formword and is close to the bottom all is provided with the perforation that corresponds with the tie rod, and what correspond, the position that is close to the top of outer formword and is close to the bottom also all is provided with the perforation that corresponds with the tie rod. The installation process of the pull rod is as follows: after the outer template and the inner template are respectively arranged at the positions corresponding to the two sides of the guardrail, the counter-pull rod is arranged in the through holes reserved on the inner template and the outer template in a penetrating way, and the two ends of the counter-pull rod respectively extend out of the inner template and the outer template. And then, two ends of the opposite pull rod are respectively sleeved with a nut, one nut is screwed to be attached to the outer side of the inner template, and the other nut is screwed to be attached to the outer side of the outer template.

But when the interval between the upper and lower lane of bridge is less, and guardrail design height is higher, can make the operating space of the outer formworks of construction member department such as guardrail near bottom department narrow, is difficult to walk around the nut on this department's ann and tear open the pull rod behind the outer formworks, and the operation is very inconvenient. And when the nut on the pull rod is installed and disassembled at the position, the nut is easy to fall off due to inconvenient operation, thereby hurting pedestrians or vehicles passing below the bridge and generating great potential safety hazard.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a template component to alleviate the in-process of the interior sheathing and the exterior sheathing of adopting construction member departments such as fixed guardrail of pull rod among the prior art, the exterior sheathing of construction member department such as guardrail be close to the operating space of bottom department when narrow, be difficult to walk around behind the exterior sheathing and install the nut on the pull rod in this department's ann, and the nut easily drops and causes the technical problem of potential safety hazard.

The utility model provides a template component which comprises an outer template and a pull rod;

a first thread is arranged on the rod body of the pull rod and extends spirally along the length direction of the pull rod;

the position department that is close to one of them side on the face of exterior sheathing is provided with connecting portion, is provided with the screw hole that corresponds with first screw thread on the connecting portion, and the first screw thread department of pull rod can be in the screw hole on connecting portion by threaded connection.

Further, the connecting part is a nut and is fixed on the surface of the outer template;

the outer formwork is provided with a through hole on the plate face at the connecting part, and the connecting part is communicated with the through hole on the plate face of the outer formwork.

Furthermore, a second thread is arranged on the rod body of the pull rod and extends along the length direction of the pull rod;

the template assembly also comprises an inner template and an abutting nut, wherein the inner template is arranged on one side of the outer template at intervals; the position of the inner template corresponding to the connecting part on the outer template is provided with a through hole, and the second thread of the pull rod can penetrate through the through hole on the inner template;

the butt nut threaded connection is on the second screw thread, and the butt nut can laminate on the one side of keeping away from the outer die plate of inner formword.

Further, the connecting part is fixed on one side of the outer template far away from the inner template.

Further, the template assembly also comprises a fixing plate, wherein the fixing plate is perpendicular to the outer peripheral wall of the connecting part and is fixed on one side, close to the outer template, of the outer peripheral wall of the connecting part;

the fixed plate can be attached and fixed on one side of the outer template far away from the inner template.

Furthermore, the template component also comprises a leakage-proof pipe which is fixed on one side of the connecting part close to the outer template and is communicated with the connecting part;

the leakage-proof pipe is sleeved in the through hole on the outer template, and the outer wall of the leakage-proof pipe is attached to the inner wall of the through hole on the outer template.

Furthermore, along the length direction of the pull rod, a continuous external thread is arranged on the rod body of the pull rod from one end of the pull rod to the other end of the pull rod;

the part of the external thread of the pull rod, which is close to the outer template, is a first thread, and the part of the external thread of the pull rod, which is close to the inner template, is a second thread.

Further, the template assembly further comprises a handle, and the handle is fixed on the pull rod and located on one side, far away from the first threads, of the second threads.

Further, the handle comprises a fixing nut, a first connecting rod, a strip-shaped plate and a second connecting rod;

the first connecting rod, the strip-shaped plate and the second connecting rod are sequentially connected to enable the handle to be U-shaped;

the strip-shaped plate is provided with a through hole and is sleeved on the pull rod;

the fixing nut is fixed on one side of the strip-shaped plate, which is far away from the first thread, and is fixed on one end of the pull rod, which is far away from the first thread.

Further, the template component further comprises a sleeve, the sleeve is sleeved on the pull rod, and the sleeve can abut against between the outer template and the inner template.

The utility model provides a template component can produce following beneficial effect:

the utility model provides a template component includes exterior sheathing and pull rod. A first thread is arranged on the rod body of the pull rod and extends spirally along the length direction of the pull rod. The position department that is close to one of them side on the face of exterior sheathing is provided with connecting portion, is provided with the screw hole that corresponds with first screw thread on the connecting portion, and the first screw thread department of pull rod can be in the screw hole on connecting portion by threaded connection. Utilize the utility model provides a during construction components such as template component construction guardrail, erect the exterior sheathing in construction component departments such as guardrail earlier to make connecting portion be located the position department that is close to the bottom of exterior sheathing, erect construction component department such as guardrail with current interior sheathing and the relative position department of exterior sheathing simultaneously. Then, one end of the pull rod in the template assembly sequentially penetrates through a through hole reserved in the existing inner template and a threaded hole in a connecting part on the outer template, the pull rod is rotated, the first threaded part of the pull rod is in threaded connection with the threaded hole in the connecting part of the outer template, and the pull rod penetrates through the inner template and the outer template. And finally, the pull rod and the inner template can be fixed together, and the pull rod can reinforce the inner template and the outer template.

Compared with the prior art, the utility model provides a fixed connection between pull rod and the exterior sheathing among the template assembly realizes through the screw hole on the first screw thread on the pull rod and the connecting portion on the exterior sheathing, wears to establish the pull rod on the exterior sheathing and rotates the pull rod and can be in the same place pull rod and exterior sheathing fixed connection. The pull rod and the outer template can be separated by reversely rotating the pull rod and drawing the pull rod out of the outer template. Consequently utilizing the utility model provides a during the process of construction members such as template component construction guardrail, owing to need not walk around behind the exterior sheathing ann tear open the nut on the pull rod, even the operating space of being close to bottom department of exterior sheathing is narrow, does not influence the operation yet, therefore the utility model provides a template component can reduce the degree of difficulty of the process of tearing open ann between pull rod and the exterior sheathing to and can not tear the in-process nut that drops at the aforesaid ann open, can reduce the potential safety hazard.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a formwork assembly and a guardrail provided by an embodiment of the present invention;

FIG. 2 is a schematic structural view of the template assembly of FIG. 1;

FIG. 3 is a schematic view of the connection, pull rod, handle and sleeve of FIG. 1;

FIG. 4 is a front view of the connection portion of FIG. 3;

FIG. 5 is a side view of the connection portion and the leakage preventing pipe of FIG. 3;

FIG. 6 is a front view of the abutment nut of FIG. 3;

FIG. 7 is a schematic view of the connection, tie rod and sleeve of FIG. 3;

FIG. 8 is a front view of the handle of FIG. 3;

fig. 9 is a side view of the handle of fig. 3.

Icon: 1-external template; 10-a connecting part; 100-fixing plate; 2-a pull rod; 20-an abutment nut; 200-an extension; 3-lane of traffic; 30-a guardrail; 4-inner template; 5-a rib plate; 6-leakage-proof pipe; 7-a handle; 70-fixing the nut; 71-a first link; 72-a strip; 73-a second link; 8-sleeve.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

Example (b):

as shown in fig. 1 and 2, the formwork assembly provided in this embodiment includes an outer formwork 1 and tie rods 2. The body of the pull rod 2 is provided with a first thread, and the first thread extends spirally along the length direction of the pull rod 2. The position department that is close to one of them side on the face of exterior sheathing 1 is provided with connecting portion 10, is provided with the screw hole that corresponds with first screw thread on the connecting portion 10, and the first screw thread department of pull rod 2 can be in threaded connection in the screw hole on connecting portion 10.

The formwork assembly provided by the embodiment can be used in the case that the space of the outer formwork 1 near the bottom of the construction member such as the guard rail 30 and the wall is narrow. Taking the guard bar 30 at the roadside of the up-down lane 3 with the construction member as the bridge as an example, the outer formwork 1 at the guard bar 30 is narrow in space at the position close to the bottom as shown in fig. 1, one side of the up-down lane 3 close to the down lane 3 is provided with one guard bar 30, one side of the down lane 3 close to the up lane 3 is also provided with one guard bar 30, and the outer formwork 1 at the guard bar 30 is fixed at one side of the guard bar 30 close to the other guard bar 30. Because the distance between the two guardrails 30 is small and the guardrails 30 have a certain height, the space at the position of the outer formworks 1 near the bottom of the guardrails 30 is narrow.

When constructing construction members such as the guard rail 30 using the formwork assembly provided in the present embodiment, as shown in fig. 2, the outer formwork 1 is erected at the guard rail 30 first, and the connecting portion 10 is located at a position near the bottom of the outer formwork 1, while the existing inner formwork 4 is erected at a position opposite to the outer formwork 1 at the construction members such as the guard rail 30. Then, one end of the pull rod 2 in the template assembly sequentially penetrates through a through hole reserved in the existing inner template 4 and a threaded hole in the connecting part 10 on the outer template 1, the pull rod 2 is rotated, the first threaded part of the pull rod 2 is in threaded connection with the threaded hole in the connecting part 10 of the outer template 1, and the pull rod 2 penetrates through the inner template 4 and the outer template 1. Finally, the pull rod 2 and the inner formwork 4 can be fixed together, and the pull rod 2 can reinforce the inner formwork 4 and the outer formwork 1.

When the outer formwork 1 and the inner formwork 4 are fixed to a construction member such as the guard rail 30, the tie bar 2 is a construction tool for reinforcing the outer formwork 1 and the inner formwork 4, and is not the only construction tool for fixing the outer formwork 1 and the inner formwork 4. When the outer formwork 1 and the inner formwork 4 are reinforced, construction tools such as battens and steel pipes are used together with the pull rods 2 to support the outer formwork 1 and the inner formwork 4.

Compared with the prior art, the fixed connection between pull rod 2 and the outer mould board 1 in the template component provided by the embodiment is realized through the first screw thread on pull rod 2 and the screw hole on the connecting part 10 on the outer mould board 1, and pull rod 2 is arranged on the outer mould board 1 in a penetrating way and the pull rod 2 is rotated to fixedly connect the pull rod 2 and the outer mould board 1 together. The pull rod 2 and the outer formwork 1 can be separated by reversely rotating the pull rod 2 and drawing the pull rod 2 out of the outer formwork 1.

Therefore, when the formwork assembly construction guardrail 30 and other construction members provided by the embodiment are utilized, the nuts do not need to be detached on the pull rods 2 after the outer formwork 1 is bypassed, and even if the operation space of the outer formwork 1 close to the bottom is narrow, the operation is not affected, so that the difficulty of the detaching process between the pull rods 2 and the outer formwork 1 can be reduced by the formwork assembly provided by the embodiment, the nuts cannot fall off in the detaching process, and the potential safety hazard can be reduced.

It can be seen that the template component that this embodiment provided has alleviated the adoption that exists among the prior art and has fixed the interior template and the exterior sheathing of construction member department such as guardrail to the pull rod, and when the operating space that is close to bottom department of the exterior sheathing of construction member department such as guardrail was narrow, be difficult to walk around the nut on the pull rod of installing and tearing open in this department behind the exterior sheathing, and the nut easily drops and causes the technical problem of potential safety hazard.

In practical applications, the connecting portion 10 may be a plurality of connecting portions 10, and some of the connecting portions 10 in the plurality of connecting portions 10 may be disposed near the top of the erected external form 1. The connecting portion 10 can further reduce the potential safety hazard of falling nuts.

As shown in fig. 2, 3, 4 and 5, the connecting portion 10 is a nut, and the connecting portion 10 is fixed to the plate surface of the outer panel 1. The outer formwork 1 is provided with a through hole on the plate surface at the connecting part 10, and the connecting part 10 is communicated with the through hole on the plate surface of the outer formwork 1.

The connecting portion 10 is used for increasing the thickness of the connecting portion of the outer formwork 1 and the tie bar 2, so that the tie bar 2 and the outer formwork 1 can be stably connected together.

The through hole on the outer template 1 can be a round hole with a smooth inner wall, and the pull rod 2 in the template component provided by the embodiment can adopt the existing counter-pull rod 2 with through long threads. At this moment, the formwork assembly provided by the embodiment can be obtained by additionally arranging the connecting part 10 on the outer formwork 1, so that the formwork assembly provided by the embodiment can reduce the difficulty of mounting and dismounting the pull rod 2 and the outer formwork 1 and the potential safety hazard in the mounting and dismounting process, is easy to manufacture and has lower manufacturing cost.

In the present embodiment, the connection portion 10 may be a hexagonal nut.

Wherein, the outer template 1 can be a steel template, and the connecting part 10 can be welded on the outer template 1.

As shown in fig. 2, in order to enhance the strength of the outer formwork 1, a rib plate 5 may be further disposed on a side of the outer formwork 1 facing away from the inner formwork 4, and the rib plate 5 is perpendicular to the plate surface of the outer formwork 1.

Further, as shown in fig. 2 and 3, a second thread is further disposed on the body of the pull rod 2, and the second thread extends along the length direction of the pull rod 2. The formwork assembly further comprises an inner formwork 4 and an abutment nut 20, the inner formwork 4 being spaced apart on one side of the outer formwork 1. The inner formwork 4 is provided with a through hole at a position corresponding to the connecting part 10 on the outer formwork 1, and the second thread of the pull rod 2 can penetrate through the through hole on the inner formwork 4. The abutment nut 20 is threaded on the second thread and the abutment nut 20 can be attached on the side of the inner formwork 4 remote from the outer formwork 1.

In the use process, after the first thread of the pull rod 2 is screwed into the threaded hole on the connecting part 10 of the outer formwork 1, the abutting nut 20 can be screwed at the second thread of the pull rod 2, and the abutting nut 20 is abutted on one side of the inner formwork 4 far away from the outer formwork 1, and at the moment, the pull rod 2 is fixedly connected on the outer formwork 1 and the inner formwork 4.

After concrete is poured between the inner formwork 4 and the outer formwork 1, the tie rods 2 need to be removed from between the outer formwork 1 and the inner formwork 4 so that the tie rods 2 can be reused. When dismantling pull rod 2, can reverse rotation butt nut 20 earlier for butt nut 20 keeps away from interior template 4, and reverse rotation pull rod 2 again makes pull rod 2 withdraw from in the screw hole on connecting portion 10. At this time, the fixing relationship between the tie bar 2 and the inner formwork 4 is released, the fixing relationship between the tie bar 2 and the outer formwork 1 is released, and the tie bar 2 can be drawn out from between the outer formwork 1 and the inner formwork 4.

Wherein, the inner wall of the through hole provided at the position corresponding to the connection portion 10 of the inner template 4 may be a smooth plane.

It can be seen that the abutment nut 20 is used to effect a fixed connection between the tie bar 2 and the inner formworks 4 in cooperation with the second thread.

As shown in fig. 2, in order to increase the strength of the inner formworks 4, ribs 5 may also be provided on the side of the inner formworks 4 facing away from the outer formworks 1, the ribs 5 being perpendicular to the plate surfaces of the inner formworks 4.

As shown in fig. 2, the connecting portion 10 is fixed to the outer formwork 1 on a side away from the inner formwork 4.

The connection portion 10 is fixed on the side of the outer form 1 away from the inner form 4, and the connection portion 10 can be prevented from occupying the space between the inner form 4 and the outer form 1, thereby preventing the connection portion 10 from affecting the concrete pouring process.

Therefore, the present embodiment preferably has the connecting portion 10 fixed to the outer formwork 1 on the side away from the inner formwork 4.

As shown in fig. 4 and 5, the formwork assembly provided in the present embodiment further includes a fixing plate 100, the fixing plate 100 being perpendicular to the outer circumferential wall of the connecting portion 10 and fixed on a side of the outer circumferential wall of the connecting portion 10 adjacent to the outer formwork 1. The fixing plate 100 can be fitted and fixed on the side of the outer mold plate 1 remote from the inner mold plate 4.

The fixing plate 100 serves to increase a contact area between the connecting portion 10 and the outer mold plate 1 and improve installation stability between the connecting portion 10 and the outer mold plate 1.

As shown in fig. 4, the fixing plate 100 may be provided in plurality, and a plurality of fixing plates 100 are fixed to the outer circumferential wall of the connecting portion 10 at equal intervals in the circumferential direction of the connecting portion 10.

The fixing plate 100 may be made of metal or alloy, and the fixing plate 100 is welded to the outer circumferential wall of the connecting part 10.

In the present embodiment, in order to improve the mounting stability between the abutment nut 20 and the inner mold plate 4, as shown in fig. 6, an extension 200 perpendicular to the outer peripheral wall of the abutment nut 20 may be provided on the side wall of the abutment nut 20. The extension 200 on the outer peripheral wall of the abutment nut 20 serves to increase the contact area between the abutment nut 20 and the inner formwork 4, and thus the mounting stability between the abutment nut 20 and the inner formwork 4 can be improved.

As shown in fig. 5, the formwork assembly provided in this embodiment further includes a leakage preventing pipe 6, and the leakage preventing pipe 6 is fixed to a side of the connecting portion 10 adjacent to the outer formwork 1 and is communicated with the connecting portion 10. The leakage-proof pipe 6 is sleeved in the perforation on the outer template 1, and the outer wall of the leakage-proof pipe 6 is attached to the inner wall of the perforation on the outer template 1.

The leakage-proof pipe 6 is embedded in the through hole on the outer formwork 1 and used for preventing the concrete between the outer formwork 1 and the inner formwork 4 from flowing out along the gap between the connecting part 10 and the side wall of the outer formwork 1 after passing through the through hole on the outer formwork 1, and further playing a role in preventing slurry leakage.

As shown in fig. 3 and 7, the body of the pull rod 2 is provided with a continuous external thread from one end of the pull rod 2 to the other end thereof along the length direction of the pull rod 2. The part of the external thread of the pull rod 2, which is close to the outer template 1, is a first thread, and the part of the external thread of the pull rod 2, which is close to the inner template 4, is a second thread.

The body of the pull rod 2 is provided with continuous external threads from one end to the other end of the pull rod 2, namely, the body of the pull rod 2 is provided with continuous external threads which are full-length, and at the moment, the first threads and the second threads are parts of the continuous external threads. When the rod body of the pull rod 2 is provided with continuous external threads with full length, the pull rod 2 can adopt a threaded pull rod 2 commonly used in the existing construction process.

As shown in fig. 3, 8 and 9, the formwork assembly provided by the present embodiment further includes a handle 7, and the handle 7 is fixed on the tie rod 2 and is located on the side of the second thread far from the first thread.

The handle 7 is used for promoting the convenience of rotating the pull rod 2, and then is convenient for install pull rod 2 on the exterior sheathing 1 and is convenient for dismantle pull rod 2 from exterior sheathing 1 get off.

Further, as shown in fig. 3, 8 and 9, the handle 7 includes a fixing nut 70, a first link 71, a strip 72 and a second link 73. The first link 71, the strip-shaped plate 72 and the second link 73 are connected in this order to make the handle 7U-shaped. The strip-shaped plate 72 is provided with a perforation, and the strip-shaped plate 72 is sleeved on the pull rod 2. The fastening nut 70 is fastened on the side of the strip 72 remote from the first thread and on the end of the pull rod 2 remote from the first thread.

The fastening nut 70 is used to fasten the strip 72 to the tie rod 2. When the pull rod 2 with the handle 7 is installed on the outer template 1 and the inner template 4, one end far away from the handle 7 can sequentially penetrate through the through hole on the inner template 4 and the through hole on the outer template 1, and then the handle 7 is utilized to rotate the pull rod 2, so that the first thread of the pull rod 2 is in threaded connection with the threaded hole on the connecting part 10. After the position of the pull rod 2 is continuously adjusted, the abutting nut 20 is rotated, so that the abutting nut 20 abuts on one side of the inner formwork 4, which is far away from the outer formwork 1, and the installation of the pull rod 2 can be completed.

When the pull rod 2 with the handle 7 is detached from the outer formwork 1 and the inner formwork 4, the abutting nut 20 can be rotated reversely firstly, so that the abutting nut 20 is far away from the inner formwork 4, and then the handle 7 is held to rotate the pull rod 2 reversely, so that the pull rod 2 is withdrawn from the threaded hole on the connecting part 10.

As shown in fig. 2 and 3, the formwork assembly provided by the present embodiment further includes a sleeve 8, the sleeve 8 is sleeved on the tie bar 2, and the sleeve 8 can abut between the outer formwork 1 and the inner formwork 4.

When the pull rod 2 is installed on the outer formwork 1 and the inner formwork 4, one end, far away from the handle 7, of the pull rod 2 penetrates through the through hole in the inner formwork 4, the sleeve 8 is sleeved on the pull rod 2, and the sleeve 8 can abut against the space between the outer formwork 1 and the inner formwork 4. After the sleeve 8 is sleeved, one end of the pull rod 2, which is far away from the handle 7, penetrates through the through hole in the outer template 1, and then the pull rod 2 is screwed, so that the first thread of the pull rod 2 is fixed in the threaded hole in the connecting part 10.

After the tie rods 2 are installed on the outer formworks 1 and the inner formworks 4, the outer formworks 1 and the inner formworks 4 are reinforced, and then concrete can be poured between the outer formworks 1 and the inner formworks 4. During the concrete pouring process, the sleeve 8 is abutted between the outer formwork 1 and the inner formwork 4, so that the concrete cannot be contacted with the rod body of the pull rod 2.

After the concrete is solidified and formed, the outer formwork 1 and the inner formwork 4 need to be detached, the abutting nut 20 and the pull rod 2 can be screwed in sequence at the moment, the pull rod 2 is detached from the space between the outer formwork 1 and the inner formwork 4, and then the outer formwork 1 and the inner formwork 4 are detached. In the process of disassembling the pull rod 2, because the pull rod 2 is not contacted with concrete, the pull rod 2 is easy to be drawn out, and the process of disassembling the pull rod 2 is not hindered by the concrete.

The material of the sleeve 8 may be PVC (Polyvinyl chloride, abbreviated as PVC). When the sleeve 8 is made of PVC, the sleeve 8 can be drawn out after the concrete is formed due to poor adhesion between the PVC and the concrete.

The extracted sleeve 8 and the pull rod 2 can be reused.

The sleeve 8 is used for isolating concrete poured between the outer formwork 1 and the inner formwork 4 and the pull rod 2, and the pull rod 2 is prevented from being detached from the outer formwork 1 and the inner formwork 4 difficultly after concrete forming.

It should be noted that, when the formwork assembly does not include the sleeve 8, the tie bar 2 may not be detached from between the outer formwork 1 and the inner formwork 4 after the concrete is formed between the outer formwork 1 and the inner formwork 4 in order to prevent the quality of the formed concrete from being affected. Alternatively, in order to facilitate the removal of the tie bars 2 from between the outer form 1 and the inner form 4, a release agent for preventing the bonding between the tie bars 2 and the concrete may be applied to the tie bars 2 before the tie bars 2 are installed.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A formwork assembly, comprising an outer formwork and tie rods;

the plate surface of the outer template is provided with a connecting part at a position close to one side edge, the connecting part is provided with a threaded hole corresponding to the first thread, and the first thread of the pull rod can be in threaded connection with the threaded hole in the connecting part.

2. The form assembly of claim 1, wherein said connecting member is a nut, said connecting member being secured to a face of said outer form;

the outer template is provided with be provided with the perforation on the face of connecting portion department, connecting portion with the perforation UNICOM that sets up on the face of outer template.

3. The formwork assembly defined in claim 2, wherein the tie rod body is further provided with a second thread extending along the length of the tie rod;

the template assembly further comprises an inner template and an abutting nut, and the inner template is arranged on one side of the outer template at intervals; a through hole is formed in the position, corresponding to the connecting part on the outer template, of the inner template, and a second thread of the pull rod can penetrate through the through hole in the inner template;

the butt nut threaded connection is in on the second screw thread, just the butt nut can laminate keeping away from of inner formword on one side of outer formword.

4. The template assembly according to claim 3, wherein the connecting portion is secured to a side of the outer template distal from the inner template.

5. The template assembly according to claim 4, further comprising a fixing plate perpendicular to the outer peripheral wall of the connecting portion and fixed on a side of the outer peripheral wall of the connecting portion adjacent to the outer template;

the fixing plate can be attached and fixed to one side of the outer template far away from the inner template.

6. The template assembly according to claim 4, further comprising a leak-proof tube fixed on a side of the connecting portion adjacent to the outer template and communicating with the connecting portion;

the leakage-proof pipe is sleeved in the through hole in the outer template, and the outer wall of the leakage-proof pipe is attached to the inner wall of the through hole in the outer template.

7. The template assembly according to claim 3, wherein the shank of the tie bar is provided with a continuous external thread from one end of the tie bar to the other end thereof along the length of the tie bar;

the part of the external thread of the pull rod, which is close to the outer template, is the first thread, and the part of the external thread of the pull rod, which is close to the inner template, is the second thread.

8. The die plate assembly as claimed in any one of claims 3-7, further comprising a handle secured to said tie bar on a side of said second threads remote from said first threads.

9. The template assembly of claim 8, wherein the handle comprises a retaining nut, a first link, a strip, and a second link;

the fixing nut is fixed on one side, far away from the first thread, of the strip-shaped plate and is fixed at one end, far away from the first thread, of the pull rod.

10. The template assembly according to claim 9, further comprising a sleeve sleeved over the tie bar and capable of abutting between the outer template and the inner template.