CN111502244B

CN111502244B - Full-steel large formwork structure for wall boards on two sides of expansion joint and construction method thereof

Info

Publication number: CN111502244B
Application number: CN202010373234.6A
Authority: CN
Inventors: 蒋树春
Original assignee: Wuxi Xisheng Construction Co ltd
Current assignee: Wuxi Xisheng Construction Co ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2021-07-23
Anticipated expiration: 2040-05-06
Also published as: CN111502244A

Abstract

The invention relates to an all-steel large formwork structure for wallboards on two sides of an expansion joint, which comprises a wall formwork system, wherein the wall formwork system comprises an inner formwork and an outer formwork, a jacking pipe is supported between the inner formwork and the outer formwork, a locking rod penetrates through the inner formwork and the outer formwork, a guide hole is formed in the locking rod, an ejection rod group slides in the guide hole, a mounting groove is formed in the locking rod, a touch block is arranged in the mounting groove, the touch block is rotatably connected in the mounting groove, an ejection groove is formed in the ejection rod group, a stepping-down waist hole is formed in the bottom of the mounting groove, a stress rod is fixedly connected with the touch block, a mounting ring groove is formed in the outer side wall formed by the touch block and the locking rod, an elastic rubber ring is sleeved in the mounting ring groove, a locking nut is connected to the locking rod in a threaded manner, a limiting hole is formed in the locking rod, a butt hole is formed in the ejection rod group, and a limiting pin is inserted in the limiting hole and the butt hole. The invention can improve the formwork supporting and stripping efficiency of the whole wall formwork system.

Description

Full-steel large formwork structure for wall boards on two sides of expansion joint and construction method thereof

Technical Field

The invention relates to the technical field of concrete wall formwork, in particular to an all-steel large formwork structure for wallboards on two sides of an expansion joint and a construction method thereof.

Background

The building expansion joint is a structural joint between two side walls, and is mainly used for preventing the structure of a building member from cracking or damaging due to climate temperature change (thermal expansion and cold contraction). When constructing the expansion joint, firstly, wall structures on two sides of the expansion joint need to be performed, and in the prior art, a full-steel large formwork structure is usually adopted to perform the wall structures on two sides of the expansion joint.

At present, chinese patent publication No. CN108571164A discloses a method for constructing an expansion joint shaping template, which comprises the following steps:

designing an expansion joint, wherein the expansion joint is designed according to the actually measured thickness, and the width of the expansion joint is more than or equal to 2 multi-layer plates, the thickness of 2 wood ridges, the height of 2 steel pipes and the thickness of 2 screw caps;

step two, processing a shaping template, namely manufacturing the shaping template by adopting a multilayer board with the thickness of 12-18mm, ensuring that the drilling positions of the templates on the two sides of the expansion joint are strictly aligned, ensuring that the space of fastening screws is the same as the determined dimension of a conventional shear wall, and adding a reverse fixing keel shaping screw rod besides a stress screw rod to ensure that the primary keel and the secondary keel are connected with the wood template into a whole;

and thirdly, welding a fastener, wherein before the fastener is welded, the primary and secondary keels and the wood template are tightly connected by using a reverse shaping screw rod, so that the stability is ensured not to be influenced by the sliding of the keels, the fastener is welded after the fastener is fixed, the welding of the mountain-shaped clamp and the steel pipe needs to be carried out by spot welding, the stress capacity of the steel pipe is prevented from being damaged due to the over-deep welding seam, the screw rod is required to be used for calibration in the processes of mountain-shaped clamp welding and nut welding, and the screw rod hole of the inner template, the outer screw rod hole, the hole of the mountain-shaped clamp and the center of the nut are ensured to be in a straight line during the fastening.

Above-mentioned structure is in the work progress, and fastening screw passes both sides typical forms, through the both ends difference threaded connection nut at fastening screw to this makes the typical forms obtain tightening up and fastening, however, in actual work progress, the nut need be screwed up respectively to the both sides of typical forms, and the engineering volume is great, influences the installation effectiveness of template.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an all-steel large formwork structure for wall plates on two sides of an expansion joint and a construction method thereof.

One of the objects of the present invention is: when the formwork supporting and removing of the wall formwork system are carried out, the number of screwed nuts is reduced, and therefore the formwork supporting and removing efficiency of the whole wall formwork system is improved.

The second purpose of the invention is that: when the formwork supporting and removing of the wall formwork system are carried out, the inner formwork is pressed tightly by the locking rods, compared with the traditional process, the construction step of screwing the bolts at one side of the inner formwork is saved, and the wall formwork system formwork supporting and removing efficiency is improved.

One of the purposes of the invention is realized by the following technical scheme:

a large all-steel formwork structure for wallboards on two sides of an expansion joint comprises wall formwork systems on two sides of the expansion joint, wherein each wall formwork system comprises an inner formwork and an outer formwork, the inner formwork and the outer formwork are arranged in parallel, a jacking pipe is supported between the inner formwork and the outer formwork, a locking rod penetrates between the inner formwork and the outer formwork, the jacking pipe is sleeved on the locking rod, a guide hole penetrates through the locking rod along the axis direction, an ejection rod group slides in the guide hole, the locking rod penetrates through the outer side wall of the end part of the inner formwork and is provided with a plurality of mounting grooves, the circumferential direction of the mounting grooves is the same as the axial direction of the locking rod, a touch block is arranged in each mounting groove, one end, far away from the inner formwork, of the touch block is rotatably connected in each mounting groove, the outer side wall of the end part, close to the touch block, of each ejection rod group is provided with an ejection groove, the distance between the bottom of the ejection groove and the axis of the ejection rod group is gradually increased along the direction from the inner template to the outer template, a yielding waist hole communicated with the guide hole is formed in the bottom of the mounting groove, one end of the touch block, far away from the rotating connection point, of the touch block is fixedly connected with a stress rod, the stress rod penetrates through the yielding waist hole and abuts against the bottom of the ejection groove, a mounting ring groove is formed in the outer side wall formed by the touch block and the locking rod, an elastic rubber ring is sleeved in the mounting ring groove, a locking nut used for pressing the outer template is in threaded connection with the end, penetrating through by the locking rod, of the rod body of the outer template, a limiting hole is formed in the rod body, penetrating through the locking rod, the limiting hole is arranged along the diameter direction of the locking rod, a butt joint hole corresponding to the limiting hole is formed in the ejection rod group, and when the stress rod abuts against the mounting groove to one end, facing the outer template, the limiting hole is communicated with the butt joint hole, and a limit pin is inserted in the communicated limit hole and the butt joint hole.

By adopting the technical scheme, when the formwork is erected, a worker props the top pipe between the inner formwork and the outer formwork, and then the locking rod sequentially penetrates through the outer formwork, the top pipe and the inner formwork. After the conflict piece passed the inner formword completely, the staff pushed in ejector rod group, and the atress pole receives the ejecting power in the ejecting groove of external diameter constantly increase, impels conflict piece to roll out the mounting groove to this makes the external diameter grow that the check lock lever passed inner formword one end, can't pass the inner formword back, and meanwhile, the staff inserts communicating spacing hole and butt joint downthehole with the spacer pin, and the lock that with this realization was organized to ejector rod dies. Then the staff screws up lock nut on the one end that the check lock pole passed the exterior sheathing, strains the check lock pole through lock nut to realize the tightening up between interior sheathing and the exterior sheathing. When the formwork of the wall formwork system is supported, workers do not need to screw the nuts on one side of the inner formwork and only need to screw the locking nuts on one side of the outer formwork.

The present invention in a preferred example may be further configured to: the ejection rod group comprises an ejection rod and an ejection block, the ejection rod and the ejection block coaxially slide in the guide hole, the ejection block is close to the installation groove, one end of the guide hole close to the inner template is in threaded connection with a plug, and a reset pressure spring is clamped between the plug and the ejection block.

Through adopting above-mentioned technical scheme, when the form removal, the staff takes the spacer pin out, and the resilience force of the pressure spring that resets this moment makes ejector pin group remove to the direction of keeping away from the end cap, and the conflict piece is retrieved to the mounting groove under the elasticity of elastic rubber circle to this makes the check lock lever take out from wall form system, and the staff of being convenient for carries out the form removal work in later stage.

The present invention in a preferred example may be further configured to: the device comprises a top bar, a locking bar, a limiting sliding groove, a guide bolt and a locking bar, wherein the limiting sliding groove is formed in the bar body of the top bar and is formed in the length direction of the top bar, the end part, penetrating out of an outer template, of the locking bar penetrates through the guide bolt, the guide bolt is in threaded connection with the locking bar, the end part of the guide bolt is located in the limiting sliding groove, and the length of the limiting sliding groove is not smaller than the height of the top block.

By adopting the technical scheme, the matching of the guide bolt and the limiting sliding groove has a limiting effect, and the possibility that the ejection rod group falls out of the guide hole in the process of sliding the ejection rod group is reduced.

The present invention in a preferred example may be further configured to: the utility model discloses a supporting structure of a touch screen, including mounting groove, setting up contact block, the both sides wall of its tank bottom of mounting groove perpendicular to has opened the arc wall respectively, the centre of a circle of arc wall and the center of rotation coincidence of contact block, it has the communicating mounting hole with the arc wall to open on the contact block, insert respectively in the both ends of mounting hole and be equipped with the restriction pole, press from both sides between two restriction poles and be equipped with ejecting pressure spring, the restriction pole slides in the arc wall.

Through adopting above-mentioned technical scheme, the staff extrudees the restriction lever of both sides for in the restriction lever gets into the mounting groove, when restriction lever and arc wall just to the time, the restriction lever of this end gets into the arc wall under the elasticity of ejecting pressure spring, with this installation of realization touch block in the mounting groove. The conflict piece is at the rotation in-process, and the cooperation of restriction pole and arc wall has limiting displacement, has reduced the possibility that the conflict piece is deviate from in following the mounting groove completely.

The present invention in a preferred example may be further configured to: the conflict piece includes first body and second body, first body and second body are laminated mutually, and both pass through bolted connection fastening, the mounting hole is including communicating big footpath section and path section, the path section is located the both ends of big footpath section, the restriction lever slides in the path section, and the relative tip difference fixedly connected with of both sides restriction lever slides the sliding block in big footpath section, decide the pressure spring and compress tightly between the sliding block of both sides.

Through adopting above-mentioned technical scheme, the external diameter of sliding block is greater than the internal diameter of path section, has reduced the possibility that the restriction pole falls out from the mounting hole to this stability between restriction pole and the arc wall has been improved.

The present invention in a preferred example may be further configured to: and one end of the stress rod, which faces the bottom of the ejection groove, is rotatably connected with a guide wheel.

Through adopting above-mentioned technical scheme, the setting up of leading wheel makes the friction between atress pole and the bottom of ejecting groove be rolling friction, has reduced the frictional resistance between atress pole and the bottom of ejecting groove to this makes the removal of ejecting rod group more smooth and easy.

The present invention in a preferred example may be further configured to: the end face of the ejector block facing the ejector rod is glued with a buffer rubber pad.

Through adopting above-mentioned technical scheme, rubber cushion pad can cushion the impact force that comes from the ejector pin to this noise in having reduced the installation has improved operational environment's travelling comfort.

The second purpose of the invention is realized by the following technical scheme:

a construction process for an all-steel large formwork structure of wallboards on two sides of an expansion joint comprises the following steps:

s1, formwork support: erecting an inner template and an outer template on two sides of the expansion joint by using a bracket respectively;

s2, parallelism detection: measuring the distance between the inner template and the outer template by using a laser range finder, measuring the distances between the four corners of the inner template and the outer template during measurement, and solving the difference value between the values of the distances;

s3, installing a locking rod:

1. jacking a jacking pipe between the inner template and the outer template, and simultaneously enabling a locking rod to penetrate through the outer template, the jacking pipe and the inner template;

2. when the mounting groove completely penetrates through the inner template, the side faces, deviating from the outer template and the inner template, of the mounting groove are respectively attached to the back edges, so that two ends of the locking rod respectively penetrate through the back edges on two sides;

3. the ejector rod is pressed in, the ejector rod enables the abutting block to rotate out of the mounting groove, the locking nut is screwed, and the abutting block gradually compresses the inner membrane along with tightening of the locking nut on the locking rod, so that tightening of the inner template and the outer template is achieved;

s4, pouring concrete: pouring concrete between the inner template and the outer template facing to the two sides of the expansion joint, and in the pouring process, vibrating and guiding the concrete by using a vibrating and guiding rod;

s5, demolding: treat the concrete setting back, the staff at first twists out lock nut, takes out the spacer pin after that, and the elasticity of the pressure spring that resets makes the kicking block shift out and remove to the direction of keeping away from the end cap, and the resilience force of elastic rubber circle makes during the conflict piece gets into the mounting groove this moment, and the staff takes out behind the check lock lever, takes out interior sheathing and exterior sheathing, realizes pouring of wall body.

By adopting the technical scheme, when the formwork supporting and the formwork removing of the wall formwork system are carried out, workers do not need to enter between the inner formworks on the two sides to screw nuts, and only need to utilize the ejector rod group, compared with the traditional process, the construction step of screwing the bolts on one side of the inner formworks is saved, and the wall formwork system formwork supporting and removing efficiency is improved.

In summary, the invention includes at least one of the following beneficial technical effects:

1. when the formwork of the wall formwork system is supported, the pressing-in can be realized only by pressing the ejection rod group into one side of the inner formwork by a worker, and the nut is not required to be screwed into one side of the inner formwork;

2. the limiting rods on two sides are extruded by workers to enable the limiting rods to enter the mounting groove, and when the limiting rods are aligned with the arc-shaped groove, the limiting rods at the end enter the arc-shaped groove under the elastic force of the ejection pressure spring, so that the abutting blocks can be rapidly mounted in the mounting groove;

3. in the rotating process of the contact block, the limiting rod is matched with the arc-shaped groove to have a limiting effect, so that the possibility that the contact block is completely separated from the mounting groove is reduced;

4. when the formwork supporting and removing of the wall formwork system are carried out, workers do not need to enter the space between the inner formworks on the two sides to screw nuts, only the ejector rod group is needed, compared with the traditional process, the construction step of screwing bolts on one side of the inner formworks is saved, and the wall formwork system formwork supporting and removing efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram for embodying the present invention.

Fig. 2 is a schematic view showing a structure of the locking lever.

Fig. 3 is a sectional view for embodying the inner structure of the locking lever.

Fig. 4 is an enlarged view for embodying the portion a in fig. 3.

FIG. 5 is a schematic structural view of a waist hole, a fixing hole and an arc-shaped groove for embodying abduction.

Fig. 6 is a sectional view for embodying the internal structure of the contact block.

In the figure, 1, a wall formwork system; 11. an inner template; 12. an outer template; 13. jacking pipes; 2. a locking lever; 21. a guide hole; 22. mounting grooves; 221. a abdication waist hole; 222. an arc-shaped slot; 223. a fixing hole; 23. a limiting hole; 24. a lock nut; 25. a guide bolt; 26. mounting a ring groove; 261. an elastic rubber ring; 3. an ejector rod group; 31. a top rod; 311. a butt joint hole; 312. a restricting chute; 32. a top block; 321. ejecting the groove; 322. a cushion rubber pad; 4. a contact block; 41. a stress beam; 411. a guide wheel; 42. a first body; 44. a second body; 43. mounting holes; 431. a large diameter section; 432. a small diameter section; 5. a plug; 6. a spacing pin; 7. a restraining bar; 71. ejecting a pressure spring; 72. a sliding block; 8. and a pressure spring is reset.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1:

the invention discloses an all-steel large formwork structure for wallboards on two sides of an expansion joint, and with reference to fig. 1, the all-steel large formwork structure comprises wall formwork systems 1 positioned on two sides of the expansion joint, wherein each wall formwork system 1 comprises an inner formwork 11 and an outer formwork 12, the inner formwork 11 and the outer formwork 12 are arranged in parallel, and a jacking pipe 13 is supported between the inner formwork 11 and an outer formwork. A locking rod 2 for tightening the inner formwork 11 and the outer formwork 12 is arranged between the inner formwork 11 and the outer formwork 12 in a penetrating mode, and the top pipe 13 is sleeved on the locking rod 2.

Referring to fig. 1, when pouring walls at two sides of an expansion joint, a worker firstly erects wall formwork systems 1 at two sides of the expansion joint respectively, after erection is completed, the inner formwork 11 and the outer formwork 12 are tightened by using a locking rod 2, then the worker pours concrete between the inner formwork 11 and the outer formwork 12, and after the concrete is solidified, the locking rod 2 and the wall formwork systems 1 are removed to form a wall.

Referring to fig. 2 and 3, a guide hole 21 penetrates through the locking rod 2 along the axial direction, the ejection rod group 3 slides in the guide hole 21, the locking rod 2 penetrates through the outer side wall of the end portion of the inner formwork 11 and is provided with four mounting grooves 22, the number of the mounting grooves 22 is four, and the length direction of the mounting grooves 22 is the same as the axial direction of the locking rod 2.

Referring to fig. 3 and 4, a contact block 4 is provided in the mounting groove 22, and a distance is provided between the contact block 4 and the bottom of the mounting groove 22. The one end that the contact block 4 kept away from the inner formword 11 rotates to be connected in mounting groove 22, when tightening up inner formword 11 and exterior sheathing 12, conflict piece 4 rolls out from mounting groove 22, supports tight inner formword 11 through contact block 4, need not through nut locking, and the construction is simple, has improved staff's installation effectiveness.

Referring to fig. 3 and 4, the ejector rod group 3 includes an ejector rod 31 and an ejector block 32, the ejector rod 31 and the ejector block 32 coaxially slide in the guide hole 21, the ejector block 32 is disposed near the installation groove 22, and one end of the guide hole 21 near the inner formwork 11 is connected with a plug 5 through a thread. An ejection groove 321 is formed in the outer side wall of the top block 32, and the ejection groove 321 is formed along the axial direction of the guide hole 21. The distance from the bottom of the ejecting groove 321 to the axis of the ejecting block 32 is gradually increased along the direction from the inner formwork 11 to the outer formwork 12.

Referring to fig. 5 and 6, a yielding waist hole 221 communicated with the guide hole 21 is formed at the bottom of the mounting groove 22, a stress rod 41 is fixedly connected to one end of the abutting block 4 away from the rotation connection point thereof, and the stress rod 41 penetrates through the yielding waist hole 221 and abuts against the bottom of the ejection groove 321. When the interference block 4 is positioned in the mounting groove 22, the force bearing rod 41 is positioned at the center of the abdicating waist hole 221. In addition, in order to reduce the friction force between the force bearing rod 41 and the abutting groove, a guide wheel 411 is rotatably connected to one end of the force bearing rod 41 facing the bottom of the mounting groove 22, and the guide wheel 411 makes the friction between the force bearing rod 41 and the abutting groove be rolling friction, so that the smoothness of the top block 32 in the moving process is improved.

Referring to fig. 3, one end of the ejector rod 31, which is far away from the ejector block 32, penetrates through the locking rod 2, and after the locking rod 2 penetrates through the outer formwork 12, the ejector pipe 13 and the inner formwork 11, a worker presses the ejector rod 31, and the ejector rod 31 causes the ejector block 32 to move towards the plug 5. During the movement of the top block 32, the force-bearing rod 41 is gradually separated from the installation groove 22 along the bottom of the interference groove, so that the outer diameter of the locking rod 2 passing through one end of the inner formwork 11 is increased.

Referring to fig. 3 and 4, a cushion rubber pad 322 is glued on the end face of the ejector block 32 facing the ejector rod 31, and the cushion rubber pad 322 has a buffering effect and can buffer the pressure of the ejector rod 31, so that the noise generated in the construction process is reduced.

Referring to fig. 2 and 3, a limiting hole 23 penetrates through the shaft of the locking rod 2 penetrating through the outer formwork 12, the limiting hole 23 is arranged along the diameter direction of the locking rod 2, a butting hole 311 corresponding to the limiting hole 23 is formed in the top rod 31, when the stress rod 41 butts against one end of the mounting groove 22 facing the outer formwork 12, the limiting hole 23 is communicated with the butting hole 311, and a limiting pin 6 is inserted into the communicated limiting hole 23 and the butting hole 311.

Referring to fig. 2 and 3, after the outer diameter of the locking rod 2 passing through one end of the inner mold plate 11 is increased, the worker inserts the limit pin 6 into the limit hole 23 and the butt hole 311 which are communicated with each other, so that the effect of locking the ejector rod 31 is achieved, and the possibility of movement of the ejector rod 31 is reduced.

Referring to fig. 1 and 2, the end of the locking rod 2 penetrating through the outer formwork 12 is connected with a locking nut 24 for compressing the outer formwork 12 through threads, after the ejector rod 31 is locked by the limiting pin 6, a worker tightens the locking nut 24, the locking rod 2 is tightened by the locking nut 24, the contact block 4 compresses the inner formwork 11 gradually, and tightening between the inner formwork 11 and the outer formwork 12 is achieved.

Referring to fig. 5 and 6, two side walls of the installation groove 22 perpendicular to the groove bottom are respectively provided with an arc-shaped groove 222, and the arc-shaped grooves 222 are distributed near the inner formworks 11. The center of the arc-shaped slot 222 coincides with the rotation center of the collision block 4. The contact block 4 is provided with a mounting hole 43 communicated with the arc-shaped groove 222, two ends of the mounting hole 43 are respectively inserted with a limiting rod 7, an ejection pressure spring 71 is clamped between the two limiting rods 7, and the limiting rods 7 slide in the arc-shaped groove 222.

Referring to fig. 5 and 6, in the process that collision block 4 rotates out of installation groove 22, arc-shaped groove 222 can limit the moving range of limiting rod 7, so that the rotating range of collision block 4 is controlled, and the possibility that collision block 4 is separated from installation groove 22 is reduced.

Referring to fig. 5 and 6, two ends of the mounting hole 43 in the length direction of the collision block 4 are respectively provided with one mounting hole 43, and the two mounting holes 43 are arranged in parallel. The two mounting holes 43 are respectively provided with a limiting rod 7 and an ejection pressure spring 71. The contact block 4 includes a first body 42 and a second body 44, and the first body 42 and the second body 44 are attached to each other and fastened by a bolt. The mounting hole 43 includes a large-diameter section 431 and a small-diameter section 432 which are communicated with each other, and the small-diameter section 432 is located at both ends of the large-diameter section 431, and the restricting rod 7 is slidably moved in the small-diameter section 432.

Referring to fig. 5 and 6, the opposite ends of the two side limiting rods 7 are fixedly connected with sliding blocks 72 sliding in the large diameter section 431, and the ejection compression spring 71 is pressed between the sliding blocks 72 on the two sides. The inner side wall of the mounting groove 22 far away from the inner formwork 11 is provided with a fixing hole 223, and two inner side walls of the mounting groove 22 vertical to the groove bottom of the fixing hole 223 are respectively provided with one fixing hole 223. In the process of installing the contact block 4 in the installation groove 22, a worker presses the two limiting rods 7 at one end of the contact block 4, so that the limiting rods 7 at two sides enter the installation groove 22, and when the limiting rods 7 at the end are aligned with the fixing holes 223, the pushing-out compression springs 71 limit the entering into the fixing holes 223, so that the contact block 4 is rotatably connected in the installation groove 22.

Referring to fig. 5 and 6, after the limiting rod 7 enters the fixing hole 223, a worker presses the limiting rod 7 far away from one end of the mounting hole 43, so that the limiting rod 7 enters the mounting groove 22, and when the limiting rod 7 is opposite to the arc-shaped groove 222, the limiting rod 7 at the end enters the arc-shaped groove 222 under the elastic force of the ejection compression spring 71, so that the contact block 4 is mounted in the mounting groove 22.

Referring to fig. 5 and 6, in addition, since the outer diameter of the sliding block 72 is larger than the inner diameter of the small diameter section 432, the sliding block 72 has a restricting function, and the possibility that the restricting rod 7 is disengaged from the mounting hole 43 is reduced.

Referring to fig. 3, the stem of the top bar 31 is provided with a regulating runner 312, and the regulating runner 312 is provided symmetrically with respect to the axis of the guide hole 21 and is opened along the longitudinal direction of the top bar 31. The end of the locking rod 2 penetrating through the outer template 12 is provided with guide bolts 25, and the number and the positions of the guide bolts 25 are arranged corresponding to the limiting sliding grooves 312. The guide bolt 25 is connected to the locking rod 2 in a threaded manner, the end of the guide bolt 25 penetrates through the wall thickness of the locking rod 2 and is located in the limiting sliding groove 312, and the length of the limiting sliding groove 312 is equal to the height of the top block 32. In the process of moving the ejector rod 31, the guide bolt 25 can limit the moving distance of the ejector rod 31, and the possibility that the ejector rod 31 falls out of the guide hole 21 is reduced.

The outer side wall formed by the abutting block 4 and the locking rod 2 is provided with a mounting ring groove 26, and an elastic rubber ring 261 is sleeved in the mounting ring groove 26. In addition, a return compression spring 8 is clamped between the plug 5 and the top block 32. After the completion is pour at the wall body, the staff takes out spacer pin 6, and the resilience force of pressure spring 8 that resets this moment makes kicking block 32 and ejector pin 31 remove to the direction of keeping away from end cap 5, and the in-process of removal, elastic rubber circle 261 make in contact block 4 advances mounting groove 22 to this makes the staff can take out check lock lever 2.

Example 2:

the embodiment discloses a construction method for an all-steel large formwork structure of wallboards on two sides of an expansion joint in embodiment 1, which comprises the following steps:

s1, formwork support: an inner template 11 and an outer template 12 are respectively erected on two sides of the expansion joint by utilizing a bracket;

s2, parallelism detection: measuring the distance between the inner template 11 and the outer template 12 by using a laser range finder, measuring the distance between four corners of the inner template 11 and the outer template 12 during measurement, and solving the difference value between the values of the distances;

s3, installing the locking rod 2:

1. jacking a top pipe 13 between the inner formwork 11 and the outer formwork 12, and simultaneously enabling the locking rod 2 to penetrate through the outer formwork 12, the top pipe 13 and the inner formwork 11;

2. when the mounting groove 22 completely penetrates through the inner formwork 11, the side faces of the outer formwork 12, which are deviated from the inner formwork 11, are respectively attached to the back edges, so that two ends of the locking rod 2 respectively penetrate through the back edges on two sides;

3. the ejector rod 31 is pressed in, the ejector rod 31 enables the abutting block 4 to rotate out of the mounting groove 22, the lock nut 24 is screwed, and the abutting block 4 gradually compresses the inner membrane along with the tightening of the lock nut 24 on the lock rod 2, so that the inner template 11 and the outer template 12 are tightened;

s4, pouring concrete: concrete is poured between the inner formwork 11 and the outer formwork 12 facing to the two sides of the expansion joint, and in the pouring process, the concrete is vibrated and guided by utilizing the vibration guide rods;

s5, demolding: after the concrete is solidified, the worker firstly screws out the locking nut 24, then takes out the limiting pin 6, the elasticity of the reset pressure spring 8 enables the ejector block 32 to move out to move towards the direction far away from the plug 5, the resilience force of the elastic rubber ring 261 enables the contact block 4 to enter the mounting groove 22, and after the worker takes out the locking rod 2, the inner formwork 11 and the outer formwork 12 are taken out, so that the pouring of the wall body is realized.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a big template structure of expansion joint both sides wallboard all steel, is including wall form system (1) that is located the expansion joint both sides, wall form system (1) includes interior template (11) and exterior sheathing (12), interior template (11) and exterior sheathing (12) parallel arrangement each other, it has push pipe (13), its characterized in that to prop between interior template (11) and exterior sheathing (12): wear to be equipped with check bar (2) between interior template (11) and exterior sheathing (12), push pipe (13) cover is established on check bar (2), check bar (2) link up along the axis direction has guiding hole (21), guiding hole (21) internal slipping has ejector pin group (3), it has mounting groove (22) to open on the tip lateral wall that interior template (11) was passed in check bar (2), mounting groove (22) are equipped with a plurality ofly along the circumference of check bar (2), the length direction of mounting groove (22) and the axial syntropy of check bar (2), be equipped with in mounting groove (22) and support touch multitouch (4), support touch multitouch (4) and keep away from the one end rotation of interior template (11) and connect in mounting groove (22), ejector pin group (3) are close to and open on the tip lateral wall of touch multitouch (4) and have ejecting groove (321), ejecting groove (321) tank bottom is apart from the distance of ejector pin group (3) along interior template (11) to axle center to ejector pin group (3), the distance of ejecting groove (321) between the bottom distance of ejecting staff group (3) along interior template axle center The direction of board (12) increases gradually, the tank bottom of mounting groove (22) is seted up with the communicating waist hole of stepping down (221) of guiding hole (21), touch multitouch (4) are kept away from its one end fixedly connected with stress bar (41) of rotating the tie point, stress bar (41) pass and step down waist hole (221) and contradict in the tank bottom of ejecting groove (321), the lateral wall of touch multitouch (4) and check lock lever (2) constitution is opened has installation annular (26), installation annular (26) endotheca is equipped with elastic rubber circle (261), threaded connection has lock nut (24) that are used for compressing tightly exterior sheathing (12) on the tip that exterior sheathing (12) were worn out to check lock lever (2), it has spacing hole (23) to wear through on the pole body of exterior sheathing (12) to check lock lever (2), spacing hole (23) set up along the diameter direction of check lock lever (2), the ejection rod group (3) is provided with a butt joint hole (311) corresponding to the limiting hole (23), when the stress rod (41) is abutted to one end, facing the outer template (12), of the mounting groove (22), the limiting hole (23) is communicated with the butt joint hole (311), and a limiting pin (6) is inserted into the communicated limiting hole (23) and the butt joint hole (311).

2. The large all-steel formwork structure for wall plates on two sides of an expansion joint according to claim 1, which is characterized in that: ejector rod group (3) include ejector pin (31) and kicking block (32), ejector pin (31) and kicking block (32) coaxial slide in guiding hole (21), kicking block (32) are close to mounting groove (22) and set up, guiding hole (21) are close to one end threaded connection of inner formword (11) and have end cap (5), it has pressure spring (8) that reset to press from both sides tightly between end cap (5) and kicking block (32).

3. The large full-steel formwork structure for wall plates on two sides of an expansion joint according to claim 2, characterized in that: a limiting sliding groove (312) is formed in the rod body of the ejector rod (31), the limiting sliding groove (312) is formed in the length direction of the ejector rod (31), a guide bolt (25) penetrates through the end portion, penetrating out of the outer template (12), of the locking rod (2), the guide bolt (25) is in threaded connection with the locking rod (2), the end portion of the guide bolt (25) is located in the limiting sliding groove (312), and the length of the limiting sliding groove (312) is not smaller than the height of the ejector block (32).

4. The large all-steel formwork structure for wall plates on two sides of an expansion joint according to claim 1, which is characterized in that: arc wall (222) have been opened respectively to the both sides wall of its tank bottom of mounting groove (22) perpendicular to, the centre of a circle of arc wall (222) and the center of rotation coincidence of touch multitouch (4), it has communicating mounting hole (43) with arc wall (222) to open on touch multitouch (4), insert respectively in the both ends of mounting hole (43) and be equipped with restriction lever (7), press from both sides between two restriction levers (7) and be equipped with ejecting pressure spring (71), restriction lever (7) slide in arc wall (222).

5. The large full-steel formwork structure for wall plates on two sides of an expansion joint according to claim 4, characterized in that: the contact block (4) comprises a first block body (42) and a second block body (44), the first block body (42) and the second block body (44) are mutually attached and fastened through bolts, the mounting hole (43) comprises a large-diameter section (431) and a small-diameter section (432) which are communicated with each other, the small-diameter section (432) is located at two ends of the large-diameter section (431), the limiting rod (7) slides in the small-diameter section (432), the opposite ends of the limiting rods (7) on two sides are respectively and fixedly connected with sliding blocks (72) which slide in the large-diameter section (431), and the compression spring is compressed between the sliding blocks (72) on two sides.

6. The large all-steel formwork structure for wall plates on two sides of an expansion joint according to claim 1, which is characterized in that: one end of the stress rod (41) facing the bottom of the ejection groove (321) is rotatably connected with a guide wheel (411).

7. The large full-steel formwork structure for wall plates on two sides of an expansion joint according to claim 2, characterized in that: the end face of the ejector block (32) facing the ejector rod (31) is glued with a buffer rubber pad (322).

8. A construction process for an all-steel large formwork structure of wall plates on two sides of an expansion joint according to any one of claims 1 to 7 comprises the following steps:

s1, formwork support: an inner template (11) and an outer template (12) are respectively erected on two sides of the expansion joint by utilizing a bracket;

s2, parallelism detection: measuring the distance between the inner template (11) and the outer template (12) by using a laser range finder, measuring the distances between four corners of the inner template (11) and the outer template (12) during measurement, and solving the difference value between the values of the distances;

s3, installing a locking rod (2):

1. jacking a jacking pipe (13) between the inner template (11) and the outer template (12), and simultaneously enabling the locking rod (2) to penetrate through the outer template (12), the jacking pipe (13) and the inner template (11);

2. when the mounting groove (22) completely penetrates through the inner template (11), the side faces of the outer template (12) and the inner template (11) which are deviated from each other are respectively attached to the back edges, so that two ends of the locking rod (2) respectively penetrate through the back edges on two sides;

3. the push rod (31) is pressed in, the push rod (31) enables the contact block (4) to rotate out of the mounting groove (22), the lock nut (24) is screwed, and the contact block (4) gradually compresses the inner membrane along with the tightening of the lock nut (24) on the lock rod (2), so that the inner template (11) and the outer template (12) are tightened;

s4, pouring concrete: concrete is poured between the inner formwork (11) and the outer formwork (12) facing to the two sides of the expansion joint, and in the pouring process, the vibration guide rod is used for conducting vibration guide on the concrete;

s5, demolding: after the concrete solidifies, the staff firstly unscrews the lock nut (24), then takes out the spacer pin (6), the elasticity of the reset pressure spring (8) makes the ejector block (32) shift out to the direction of keeping away from the end cap (5) and move, the resilience force of the elastic rubber ring (261) makes the contact block (4) enter the mounting groove (22), and after the staff takes out the lock lever (2), the inner formwork (11) and the outer formwork (12) are taken out, and the pouring of the wall body is realized.