Steel formwork facilitating demolding in concrete engineering construction and construction method

Abstract

The invention discloses a steel formwork facilitating concrete engineering construction demolding and a construction method, and relates to the technical field of civil engineering. The device comprises a connecting mechanism arranged on the left wall and the lower wall of an outer steel formwork, and the connecting mechanism comprises a mounting box hinged to the outer steel formwork, a rectangular strip arranged in the mounting box and a rotating column arranged on the side, away from the outer steel formwork, of the rectangular strip, and the section of the rotating column is oval; the demolding mechanism is arranged on the inner side of the outer steel formwork and comprises a mounting frame arranged in front of the inner steel formwork and fixedly connected with the outer steel formwork, a worm located on the inner side of the mounting frame and perpendicular to the inner steel formwork, a rectangular column connected with the worm in a meshed mode and fixedly connected with the inner steel formwork and a shaking assembly. Limiting between the two adjacent steel formwork bodies is achieved through the two inserting strips, the connecting efficiency is improved, fixing between the two adjacent steel formwork bodies is achieved through the rotating column, a threaded structure does not need to be adopted, and demolding is facilitated through cooperation of the worm and the rectangular column.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering, and in particular to a steel template and a construction method for facilitating demoulding in concrete engineering construction. Background Art

[0002] Steel formwork is a formwork material used for concrete pouring in civil engineering, usually composed of steel plates or steel frames. It is used in large-scale engineering projects, especially concrete structures that require high precision and strength, such as bridges, buildings, water conservancy, municipal engineering, etc. Before the concrete pouring operation, the steel formwork is spliced ​​at the periphery of the pouring position according to the pouring position of the structure. At present, two adjacent steel formworks are fixed by bolts. However, when splicing two adjacent steel formworks under actual construction conditions, the traditional method requires a large number of bolts to be tightened, which not only reduces the construction efficiency due to cumbersome operations, but also increases the labor intensity of construction workers. In order to solve the above problems, the application publication number CN117552622A provides a steel formwork for building concrete construction that is easy to demould. By synchronously driving the cooperation of all screws and nuts, the existing method can effectively reduce the number of screwing times when workers disassemble and assemble a single steel formwork without reducing the number of bolt connection points, thereby improving the convenience and efficiency of demoulding the steel formwork to a certain extent. When the existing steel formwork is spliced, the steel formwork to be spliced ​​and the adjacent steel formwork are placed in the installation position, and then the connection between the two adjacent steel formworks is achieved through screws and nuts. However, when the steel formwork at the installation position is subjected to strong winds or accidental collisions with foreign objects, it will shake greatly or even fall down, making it difficult to accurately align the screw and nut, thereby reducing the connection efficiency between the screw and the nut. At the same time, when the existing steel formwork uses the combination of screws and nuts to lock two adjacent steel formworks, the required locking force is large, which is laborious in actual operation. At the same time, many screws and nuts are easily contaminated by impurities during use, which increases the difficulty of locking, causes abnormal wear and premature scrapping; Furthermore, after the concrete is formed, there is a certain degree of adhesion between the steel formwork and the concrete, which makes it inconvenient to demould the steel formwork. To solve this problem, the existing steel formwork allows the back plate and the outer frame to rotate relative to each other to facilitate demoulding. However, in order to achieve the purpose of relative rotation of the back plate and the outer frame, the back plate and the outer frame cannot be connected seamlessly. When the concrete is poured, the gap will be filled, resulting in slender protrusions on the surface of the concrete after it is formed, affecting the forming quality of the concrete. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the fact that the steel formwork in the above-mentioned prior art will shake greatly or even fall down when subjected to strong winds or accidental collisions with foreign objects, making it difficult to accurately align the screw and the nut, thereby reducing the connection efficiency between the screw and the nut, a steel formwork that is convenient for demoulding during concrete engineering construction is proposed.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a steel formwork that is convenient for demoulding during concrete engineering construction, comprising a steel formwork body, including an inner steel formwork, an outer steel formwork arranged outside the inner steel formwork and having a clearance fit with the inner steel formwork, an insert bar fixed to both the left and lower walls of the outer steel formwork, and a trapezoidal bar fixed to the right wall inside the outer steel formwork; a connecting mechanism arranged on the left and lower walls of the outer steel formwork, comprising an installation box hinged to the outer steel formwork, a rectangular bar arranged inside the installation box, and an elliptical cross-section arranged on a side of the rectangular bar away from the outer steel formwork A rotating column, a rotating rod is fixed at the middle position of both ends of the rotating column, the rotating rod is rotatably connected to the installation box through a bearing, a gear is fixed to the outside of the rotating rod on one side of the installation box corresponding to the side of the rotating rod, and a rotating plate is provided on both sides of the gear, and any rotating plate abuts against the teeth in the gear; and a demoulding mechanism provided on the inner side of the outer steel formwork, including a mounting frame provided in front of the inner steel formwork and fixedly connected to the outer steel formwork, a worm located on the inner side of the mounting frame and vertically arranged with the inner steel formwork, a rectangular column meshing with the worm and fixedly connected to the inner steel formwork, and a shaking assembly.

[0006] As a preferred solution of the steel formwork for facilitating demoulding during concrete engineering construction of the present invention, a moving rod is arranged on the upper inner side of the outer steel formwork, a positioning block slidably connected to the outer steel formwork is fixed to the right end of the moving rod, a spring is arranged on the left wall of the positioning block corresponding to the outside of the moving rod, a trapezoidal plate fixedly connected to the outer steel formwork is arranged on the left end of the spring corresponding to the outer clearance of the moving rod, the length of the left wall of the trapezoidal plate is smaller than the length of the right wall of the trapezoidal plate, a vertical plate is fixed to the left end of the moving rod, a moving groove is opened on the vertical plate, a connecting strip is arranged inside the moving groove, an operating block and a sliding block are fixed to the left and right ends of the connecting strip respectively, and the length of the right wall of the sliding block is smaller than the length of the left wall of the sliding block.

[0007] As a preferred solution of the steel formwork for facilitating demoulding of concrete engineering construction of the present invention, a rectangular groove is provided above the trapezoidal bar corresponding to the right wall of the outer steel formwork, the right wall of the outer steel formwork and the upper wall of the outer steel formwork are provided with connecting holes, a slot is provided at the position of the insertion strip on the lower side corresponding to the upper wall of the outer steel formwork, the left wall of the insertion strip on the lower wall of the outer steel formwork and the lower wall of the insertion strip on the left wall of the outer steel formwork are provided with retaining grooves, and the trapezoidal bar and the positioning block are respectively adapted to the corresponding retaining grooves.

[0008] The beneficial effect of the steel formwork for facilitating demoulding in concrete engineering construction of the present invention is that when connecting with the adjacent steel formwork body, the inserting strip of the left wall of the steel formwork body is inserted into the rectangular groove in the adjacent steel formwork body on its left, and then the steel formwork body is moved downward until the trapezoidal strip in the adjacent steel formwork body on its left is inserted into the retaining groove of the inserting strip on the left side of the steel formwork body. In this process, the inserting strip on the lower wall of the steel formwork body will pass through the slot in the adjacent steel formwork body below it, and under the action of the spring in the adjacent steel formwork body below it, the positioning block in the adjacent steel formwork body below it is inserted into the retaining groove in the inserting strip on the lower wall of the steel formwork body, so that the two adjacent steel formwork bodies can be used for demoulding. The steel formwork body to be installed is limited. Compared with the prior art, two insert strips are used to initially limit the steel formwork body to be installed and its two adjacent steel formwork bodies. By utilizing the limiting effect, there is no need to manually prevent the steel formwork body to be installed from tilting or even falling due to external forces when performing the fixed connection operation between the steel formwork body and its two adjacent steel formwork bodies. This makes it more convenient to perform the subsequent fixed connection operation between the steel formwork body and its two adjacent steel formwork bodies, and solves the problem that the steel formwork in the prior art will shake greatly or even fall when subjected to strong winds or accidental collisions with foreign objects, making it difficult to accurately align the screw and the nut, thereby reducing the connection efficiency between the screw and the nut.

[0009] In view of the fact that when the above-mentioned existing steel formworks use the combination of screws and nuts to lock two adjacent steel formworks, the required locking force is relatively large, which is relatively laborious in actual operation. At the same time, more screws and nuts are easily contaminated by impurities during use, which increases the difficulty of locking and causes abnormal wear and premature scrapping. Therefore, further improvements are made to a steel formwork that is convenient for demoulding during concrete engineering construction.

[0010] As a preferred solution of the steel formwork for facilitating demoulding during concrete engineering construction of the present invention, a T-shaped plate is symmetrically fixed to the front wall of the rectangular bar, a through groove is opened at the front wall of the installation box corresponding to the position of the T-shaped plate, the T-shaped plate passes through the through groove and is slidably connected to the installation box, a boss adapted to the connecting hole is fixed to the side wall of the rectangular bar close to the outer steel formwork, and an operating rod is fixed to the outside of the rotating rod corresponding to the side of the gear away from the installation box.

[0011] As a preferred solution of the steel formwork for facilitating demoulding of concrete engineering construction of the present invention, a baffle is arranged between the two rotating plates, the baffle is in contact with any rotating plate, and the ends of the baffle and the rotating plate close to the front wall of the installation box are respectively fixed with round rod one and round rod two that match the clearance of the installation box, and the rear ends of the round rod one and the round rod two are respectively fixed with round plates one and round plates two, an elastic part is fixed to the outer side wall of the rotating plate, an inclined plate is fixed to the outer end of the elastic part, and the inclined plate is fixedly connected to the installation box.

[0012] Another beneficial effect of the steel formwork for demoulding during concrete engineering construction of the present invention is that after the installation box cover is closed on the outside of the steel formwork body to be installed and the side wall of the adjacent steel formwork body, the operating rod is controlled to rotate to drive the rotating column to rotate. Since the cross-section of the rotating column is elliptical, when the rotating column rotates, the corresponding rectangular bar is driven to move away from the rotating column and forms an extrusion effect on the rectangular bar. At the same time, after the boss is inserted into the corresponding connecting hole, the steel formwork body to be installed is stably connected to the adjacent steel formwork body. In this state, the corresponding rotating plate is used to block the gear to prevent the gear from rotating after the force on the operating rod is released, so that the cooperation between the rectangular bar and the boss is achieved. The invention aims to fix the steel formwork body to be installed with the adjacent steel formwork body. The connection method between the steel formwork body and the adjacent steel formwork body is not only labor-saving but also can ensure the stability of the connection. At the same time, the connection is not made in the form of threads. Therefore, it will not be easily contaminated by impurities during use, which will increase the difficulty of locking and cause abnormal wear and premature scrapping. The invention solves the problem that when the existing steel formwork uses the combination of screws and nuts to lock two adjacent steel formworks, the locking force required is large, which is laborious in actual operation. At the same time, more screws and nuts are easily contaminated by impurities during use, which increases the difficulty of locking and causes abnormal wear and premature scrapping.

[0013] In view of the fact that in order to achieve the purpose of relative rotation between the back plate and the outer frame in the prior art, the back plate and the outer frame cannot be connected without a seamless gap, and the gap will be filled after the concrete is poured, resulting in slender protrusions on the concrete surface after the concrete is formed, affecting the forming quality of the concrete. Therefore, a further improvement is made to a steel formwork that is convenient for demoulding during concrete engineering construction.

[0014] As a preferred solution of the steel formwork for facilitating demoulding during concrete engineering construction of the present invention, L-shaped plates fixedly connected to the outer steel formwork are symmetrically arranged in front of the upper and lower edges of the inner steel formwork, and sliding rods fixedly connected to the inner steel formwork are gap-fittedly arranged on the left and right sides of the L-shaped plate, the sliding rods are T-shaped, and a sliding plate is arranged between the sliding rod and the corresponding L-shaped plate, and a sliding groove is opened on the sliding plate, and a limiting plate with a T-shaped cross section and fixed to the L-shaped plate is arranged on the inner side of the sliding groove.

[0015] As a preferred solution of the steel formwork for facilitating demoulding of concrete engineering construction according to the present invention, a guide tube fixed to a mounting frame is provided in a clearance fit on the outside of the rectangular column, a connecting rod rotatably connected to the mounting frame through a bearing is fixed at the middle position of the front wall of the worm, a rectangular block is fixed to the front end of the connecting rod, and a vibration column fixed to the mounting frame is provided on the side of the operating rod away from the rectangular column.

[0016] As a preferred solution of the steel formwork for facilitating demoulding of concrete engineering construction according to the present invention, the shaking assembly includes a connecting sleeve mounted on the outside of the rectangular block, the outside of the connecting sleeve is rotatably connected to a shaking plate through a bearing, a rocking rod is fixed to the left end of the front wall of the shaking plate, a striking plate is arranged behind the right side of the shaking plate, and a protrusion rotatably connected to the shaking plate through a bearing is fixed to the left end of the front wall of the striking plate.

[0017] As a preferred solution of the steel formwork for facilitating demoulding of concrete engineering construction of the present invention, a connecting plate is arranged in front of the rocking plate, a truncated cone-shaped pinching block is fixed to the front wall of the connecting plate, and a second socket and a first socket are respectively provided on both sides of the connecting sleeve and the front wall of the rocking plate, and an insertion rod is fixed to the rear wall of the connecting plate at the position of the second socket and the first socket, and the insertion rod is inserted into the corresponding inside of the second socket and the first socket.

[0018] The beneficial effect of the steel formwork for demoulding in concrete engineering construction of the present invention is as follows: the rocking plate is driven to rotate by operating the rocking lever, and when the plug rod is plugged into the corresponding second and first plug holes, the rotation of the rocking plate can drive the rectangular block to rotate, thereby driving the connecting rod and the worm to rotate, and driving the rectangular column to move back and forth accordingly. By utilizing this movement, the outer steel formwork and the inner steel formwork can be separated from the formed concrete respectively, so as to facilitate the demoulding of the steel formwork body. In addition, by separating the plug rod from the corresponding second and first plug holes, the rocking lever can be operated to rotate to swing the electric striking plate, and the striking plate acts on the vibration to produce The vibration acts on the outer steel formwork and the inner steel formwork, which can further improve the demoulding effect. Compared with the prior art, due to the clearance fit between the outer steel formwork and the inner steel formwork, and the demoulding is achieved by staggering the outer steel formwork and the inner steel formwork front and back during demoulding, the generation of gaps is reduced. Therefore, the molding quality of the concrete after molding is improved, and the problem that in the prior art, in order to achieve the purpose of relative rotation between the back plate and the outer frame, the back plate and the outer frame cannot be connected without a gap, and the gap will be filled after the concrete is poured, resulting in slender protrusions on the concrete surface after concrete molding, affecting the molding quality of the concrete is solved.

[0019] The present invention also provides a steel formwork construction method that is convenient for demoulding during concrete engineering construction. The steel formwork that is convenient for demoulding during concrete engineering construction is demoulded according to the following steps: S1. First, during assembly, the insert strip on the left side of the steel formwork body to be installed is passed through the rectangular groove in the adjacent steel formwork body on the left that has been installed, and then the steel formwork body to be installed is moved downward until the trapezoidal strip in the steel formwork body installed on the left is inserted into the retaining groove in the insert strip of the left wall of the outer steel formwork in the steel formwork body to be installed. At the same time, the insert strip of the lower wall of the steel formwork body to be installed passes through the slot in the installed steel formwork body below, until the lower wall of the outer steel formwork in the steel formwork body to be installed is fitted with the upper wall of the outer steel formwork in the installed steel formwork body below. At this time, under the action of the spring in the installed steel formwork body below, the positioning block in the installed steel formwork body below is inserted into the retaining groove in the insert strip of the lower wall of the outer steel formwork in the steel formwork body to be installed, so that the steel formwork body to be installed is positioned and connected with the installed steel formwork body on the left and the installed steel formwork body below. S2, then operate the two installation boxes in sequence to rotate along the inner and outer steel templates of the steel template body to be installed until the installation boxes are located outside the inner and outer steel template side walls of the two adjacent steel template bodies, at this time, control the operating lever to rotate, drive the gear and the rotating column to rotate, the rotating column applies a force in the direction of the outer steel template to the rectangular bar so that the boss is plugged into the corresponding connection hole, when the rotating column applies a suitable extrusion force to the rectangular bar, under the blocking of the rotating plate on the gear, the position of the gear is fixed so that the rotating column continuously maintains a suitable pressure on the rectangular bar to complete the fixed connection between the steel template body to be installed and the adjacent installed steel template body; S3. Finally, when demoulding, the blocking bar is operated to rotate to block the other rotating plate, and the operating rod is rotated to drive the rotating column to release the force applied to the rectangular bar, and then the rectangular bar is operated to disengage the boss from the corresponding connecting hole, and then the sliding plate is operated to move in the direction away from the blocking piece, and the shaking assembly is operated to make the connecting sleeve sleeve on the outside of the rectangular block, and the plug rod is respectively inserted into the second plug hole and the first plug hole, and the rocker is operated to rotate to drive the rocker to rotate, so that the connecting sleeve, the connecting rod and the worm are rotated, thereby driving the rectangular column to move away from the formed concrete, and the inner steel formwork is moved forward a small amount to separate the inner steel formwork from the formed concrete, and then the rocker is operated to rotate in the reverse direction to separate the outer steel formwork from the formed concrete, and the steel formwork body can be demoulded. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 The overall structural diagram of a steel formwork that facilitates demoulding during concrete engineering construction.

[0021] Figure 2 This is the structural diagram of the steel formwork body.

[0022] Figure 3 for Figure 2 Another structural diagram from another perspective.

[0023] Figure 4 for Figure 2 An exploded view of some of the structures in .

[0024] Figure 5 This is the connection structure diagram between the steel formwork body and the connecting mechanism.

[0025] Figure 6 This is a structural diagram of the connecting mechanism.

[0026] Figure 7 for Figure 6 Another structural diagram from another perspective.

[0027] Figure 8 for Figure 7 Partial structure diagram.

[0028] Fig. 9 This is the connection structure diagram between the steel formwork body and the demoulding mechanism.

[0029] Fig.10 for Fig. 9 Exploded view of the structure of the middle part Figure 1 .

[0030] Fig.11 for Fig. 9 Exploded view of the structure of the middle part Figure 2 .

[0031] Fig.12 An exploded view of part of the structure of the shaking assembly.

[0032] Fig.13 for Fig.12 Exploded view of the structure of the middle part.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 100-steel template body, 101-outer steel template, 101a-rectangular groove, 101b-connecting hole, 101c-slot, 102-insertion strip, 102a-stop groove, 103-trapezoidal strip, 104-inner steel template, 105-trapezoidal plate, 106-moving rod, 106a-positioning block, 107-spring, 108-vertical plate, 108a-moving groove, 109-sliding block, 110-operating block, 110a-connecting strip, 200-connecting mechanism, 201-installation box, 201a-through groove, 201b-inclined plate, 202-rotating column, 202a-rotating rod, 203-rectangular strip, 203a-T-shaped plate, 203b-boss, 204-gear, 205-rotating plate, 205a-elastic member, 205b-round rod one, 205b-1-round plate one, 206-operating rod, 207-block bar, 207b-round rod two, 207b-1-round plate two, 300-demolding mechanism, 301-L-shaped plate, 301a-limiting plate, 302-slide plate, 302a-slide groove, 303-blocking piece, 303a-slide rod, 304-mounting frame, 304a-guide tube, 304b-vibration column, 305-rectangular column, 306-worm, 306a-connecting rod, 307-rectangular block, 308-rocking plate, 308a-rocking rod, 308b-jack one, 309-connecting sleeve, 309a-jack two, 310-strike plate, 310a-protrusion, 311-connecting plate, 311a-pinch block, 311b-insertion rod. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1

[0038] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 , which is the first embodiment of the present invention, and provides a steel formwork that is convenient for demoulding during concrete engineering construction. By using two inserts 102, the steel formwork body 100 to be installed is connected to the steel formwork body 100 to its left and the steel formwork body 100 below it, so as to achieve the purpose of preliminary limiting the steel formwork body 100 to be installed, and achieve the effect of facilitating the subsequent fixed connection between the two steel formwork bodies 100.

[0039] Specifically, it includes a steel template body 100, including an inner steel template 104, an outer steel template 101 arranged on the outside of the inner steel template 104 and gap-matched with the inner steel template 104, an insertion strip 102 fixed to the left wall and the lower wall of the outer steel template 101, and a trapezoidal strip 103 fixed to the right wall inside the outer steel template 101. The above-mentioned arrangement utilizes two insertion strips 102 to be plugged into the steel template body 100 in the corresponding direction, so that the steel template body 100 is connected to two adjacent steel template bodies 100 to achieve a preliminary limiting effect; a connecting mechanism 200 arranged on the left wall and the lower wall of the outer steel template 101, including an installation box 201 hinged to the outer steel template 101, a rectangular strip 203 arranged inside the installation box 201, and a rotating column 202 with an elliptical cross-section arranged on the side of the rectangular strip 203 away from the outer steel template 101. The above-mentioned arrangement utilizes the rotating column 202 with an elliptical cross-section to rotate The rectangular bar 203 is driven to move, and the corresponding side walls of the two outer steel templates 101 are clamped and fixed, so that the fixing effect between the two steel template bodies 100 can be achieved without using a threaded structure; and a demoulding mechanism 300 is arranged on the inner side of the outer steel template 101, including a mounting frame 304 arranged in front of the inner steel template 104 and fixedly connected to the outer steel template 101, a worm 306 located on the inner side of the mounting frame 304 and vertically arranged with the inner steel template 104, a rectangular column 305 meshingly connected with the worm 306 and fixedly connected to the inner steel template 104, and a shaking component. The above-mentioned arrangement adopts the cooperation of the worm 306 and the rectangular column 305 to realize the mutual misalignment between the outer steel template 101 and the inner steel template 104, so as to achieve the purpose of demoulding between the steel template body 100 and the formed concrete, and adopts the cooperation of the shaking component and the vibration column 304b to generate vibration to assist in demoulding.

[0040] Read in detail Figure 4 As shown, a moving rod 106 is provided on the upper inner side of the outer steel template 101, and the moving rod 106 can move relative to the trapezoidal plate 105. A positioning block 106a slidably connected to the outer steel template 101 is fixed at the right end of the moving rod 106, and the positioning block 106a is adapted to the corresponding retaining groove 102a. At the same time, the right end of the positioning block 106a is an inclined surface, which facilitates the corresponding insertion strip 102 to push the positioning block 106a when it moves downward. A spring 107 is provided on the left wall of the positioning block 106a corresponding to the outside of the moving rod 106, and the spring 107 can apply a rightward supporting force to the positioning block 106a. The left end of the spring 107 corresponds to the outer clearance of the moving rod 106 and is provided with a trapezoidal plate 105 fixedly connected to the outer steel template 101. The length of the left wall of the trapezoidal plate 105 is less than the length of the right wall of the trapezoidal plate 105, that is, The lower end of the trapezoidal plate 105 is an inclined surface, and a vertical plate 108 is fixed to the left end of the moving rod 106. The vertical plate 108 is located on the left side of the trapezoidal plate 105. A moving groove 108a is provided on the vertical plate 108 to provide a moving space for the up and down movement of the connecting bar 110a. The connecting bar 110a is arranged inside the moving groove 108a. The left and right ends of the connecting bar 110a are respectively fixed with an operating block 110 and a sliding block 109. The length of the right wall of the sliding block 109 is less than the length of the left wall of the sliding block 109, that is, the upper wall of the sliding block 109 is an inclined surface. By using the inclined surface on the sliding block 109 and the inclined surface on the trapezoidal plate 105, after applying an upward force to the operating block 110, the vertical plate 108 and the positioning block 106a are driven to move leftward. This operation is used to separate two adjacent steel template bodies 100 after demoulding; According to the above arrangement, after the inserting strip 102 of the lower wall of the steel formwork body 100 passes through the slot 101c in the steel formwork body 100 below it, the spring 107 applies a rightward force to the positioning block 106a in the steel formwork body 100 below it, until the right end of the positioning block 106a is inserted into the retaining groove 102a in the inserting strip 102, the steel formwork body 100 and the steel formwork body 100 below it can be connected. When the steel formwork body 100 and the steel formwork body 100 below it are disassembled, the operating block 110 in the steel formwork body 100 below it is manually operated to move up, and the trapezoidal plate 105 and the sliding block are moved upward. Under the action of the upper inclined surface 109, the vertical plate 108, the moving rod 106 and the positioning block 106a move to the left until the positioning block 106a is disengaged from the corresponding retaining groove 102a, and the steel formwork body 100 and the steel formwork body 100 below it can be disengaged. When the sliding block 109 is located between the trapezoidal plate 105 and the vertical plate 108, the operation on the operating block 110 can be released. Since the spring 107 applies a rightward force to the positioning block 106a, the trapezoidal plate 105 and the vertical plate 108 have friction with the sliding block 109, and this friction prevents the sliding block 109 from falling when the operation on the operating block 110 is released.

[0041] Read in detail Figure 2 and Figure 3 As shown, a rectangular groove 101a is provided above the trapezoidal strip 103 corresponding to the right wall of the outer steel template 101, and the length of the rectangular groove 101a is more than twice the width of the insert strip 102 to ensure that the insert strip 102 can be smoothly inserted into the rectangular groove 101a. The right wall of the outer steel template 101 and the upper wall of the outer steel template 101 are provided with a connecting hole 101b. The cooperation of the connecting hole 101b and the boss 203b can avoid the front and rear misalignment of two adjacent steel template bodies 100, so that the outer steel templates 101 in the two adjacent steel template bodies 100 are in the same vertical plane to prevent the concrete from being uneven after molding. The insert strip 102 located at the lower side A slot 101c is provided at the position of the strip 102 corresponding to the upper wall of the outer steel template 101, providing space for the insertion of the corresponding insert strip 102, and a retaining groove 102a is provided on the left wall of the insert strip 102 of the lower wall of the outer steel template 101 and the lower wall of the insert strip 102 of the left wall of the outer steel template 101. The trapezoidal strip 103 and the positioning block 106a are respectively matched with the corresponding retaining groove 102a. The cooperation between the trapezoidal strip 103 and the corresponding retaining groove 102a can limit the left and right directions of the steel template body 100, and the cooperation between the positioning block 106a and the corresponding retaining groove 102a can limit the up and down directions of the steel template body 100; The above-mentioned arrangement first inserts the insert strip 102 on the left side into the rectangular groove 101a in the steel formwork body 100 on its left, and then moves the steel formwork body 100 downward so that the insert strip 102 on the lower side of the steel formwork body 100 is inserted into the slot 101c in the steel formwork body 100 below it, until the positioning block 106a is inserted into the corresponding slot 101c. The order of demoulding is opposite to that of assembling, and will not be elaborated here. At the same time, considering that the outer steel formwork 101 and the inner steel formwork 104 will have a small amount of misalignment in the front-to-back direction during the demoulding process, the width of the rectangular groove 101a and the slot 101c needs to be slightly larger than the thickness of the insert strip 102. Example 2

[0042] Reference Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The difference from the previous embodiment is that this embodiment drives the rectangular bar 203 to move by rotating the rotating column 202, so that the rectangular bar 203 is used to squeeze the side walls of the outer steel templates 101 of two adjacent steel template bodies 100, and the cooperation of the connecting hole 101b and the boss 203b is used to achieve a stable connection between the two adjacent steel template bodies 100. There is no need to adopt a threaded structure, the operation is more convenient and labor-saving, and the influence of interference from external impurities is reduced.

[0043] For details, please read Figure 5 , Figure 6 , Figure 7 and Figure 8 , rotating rods 202a are fixed at the middle positions of both ends of the rotating column 202, and the rotating rods 202a enable the rotating column 202 to rotate at a relatively fixed position with respect to the installation box 201. The rotating rod 202a is rotatably connected with the installation box 201 through a bearing, and a gear 204 is fixed to the outside of the rotating rod 202a on one side of the installation box 201 corresponding to the side of the rotating rod 202a. Rotating plates 205 are provided on both sides of the gear 204. The gear 204 is blocked by the rotation of the rotating plates 205 to prevent the gear 204 from rotating by itself. Any rotating plate 205 of the gear 204 abuts against the teeth in the gear 204. In this state, the gear 204 can only rotate in one direction; A T-shaped plate 203a is symmetrically fixed to the front wall of the rectangular bar 203, so that the rectangular bar 203 moves along the installation box 201. A through slot 201a is provided at the position of the T-shaped plate 203a corresponding to the front wall of the installation box 201, providing a moving space for the movement of the T-shaped plate 203a. The T-shaped plate 203a passes through the through slot 201a and is slidably connected to the installation box 201. A boss 203b adapted to the connecting hole 101b is fixed to the side wall of the rectangular bar 203 close to the outer steel template 101. The boss 203b and the connecting hole 101b are clearance-matched. The boss 203b is inserted into the connecting hole 101b to avoid the front-to-back misalignment of two adjacent steel template bodies 100 when fixedly connected. An operating rod 206 is fixed to the outside of the rotating rod 202a corresponding to the side of the gear 204 away from the installation box 201, which is used to operate and drive the rotating column 202 to rotate; A stop bar 207 is provided between the two rotating plates 205. The side of the stop bar 207 in contact with the rotating plate 205 is preferably flat and at 90 degrees to prevent the stop bar 207 from self-rotating when in use. The stop bar 207 abuts against any rotating plate 205. The ends of the stop bar 207 and the rotating plate 205 close to the front wall of the installation box 201 are respectively fixed with a round rod 1 205b and a round rod 207b that are clearance-matched with the installation box 201, so as to make the corresponding stop bar 207 and the rotating plate 205 rotate at a fixed position. The rear ends of the round rod 1 205b and the round rod 207b are respectively fixed with a fixed There are circular plates 1 205b-1 and 207b-1, the diameters of which are larger than the diameters of the round rods 1 205b-1 and 207b-1, so as to prevent the round rods 1 205b and 207b from being separated from the installation box 201. An elastic member 205a is fixed to the outer side wall of the rotating plate 205 to provide support for the corresponding rotating plate 205, so as to prevent the rotating plate 205 from accidentally falling off when the rotating plate 205 abuts against the teeth in the gear 204. An inclined plate 201b is fixed to the outer end of the elastic member 205a, and the inclined plate 201b is fixedly connected to the installation box 201. With the above arrangement, when the rotating column 202 is used to squeeze the rectangular strip 203, the lower end of the rotating plate 205 on the side away from the outer steel template 101 is disengaged from the teeth in the gear 204, and then the end of the rotating plate 205 close to the outer steel template 101 close to the gear 204 is operated to abut against the teeth in the gear 204. At this time, the operating lever 206 is controlled to rotate the rotating column 202 to squeeze the rectangular strip 203. When the rectangular strip 203 is squeezed to a suitable force, in this state, the lower end of the rotating plate 205 close to the outer steel template 101 abuts against the gear 204. Under the action of the rotating plate 205, the gear 204 can be prevented from rotating and losing the force applied by the rotating column 202 to the rectangular plate, so that the rotating column 202 keeps applying force to the rectangular strip 203. When demoulding, when two adjacent steel template bodies 100 are separated, the outer steel template 101 is separated from the gear 204. At this time, the control operating rod 206 is rotated to drive the rotating column 202 to rotate, and the force on the rectangular strip 203 is gradually released. Example 3

[0044] Reference Figure 1 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13 , which is the third embodiment of the present invention. This embodiment is based on any of the above embodiments, and is different from the above embodiments in that: the relative movement between the inner steel formwork 104 and the outer steel formwork 101 is achieved by utilizing the cooperation of the worm 306 and the rectangular column 305, so as to promote the demoulding operation between the outer steel formwork 101 and the inner steel formwork 104 and the formed concrete, and at the same time, the vibration generated by the impact of the striking plate 310 on the vibration column 304b can improve the demoulding effect, and the purpose of demoulding is achieved by utilizing the above settings, and the outer steel formwork 101 and the inner steel formwork 104 are clearance-matched, and at the same time, the front and rear offset of the outer steel formwork 101 and the inner steel formwork 104 during demoulding is used to achieve demoulding, thereby reducing the generation of gaps.

[0045] For details, please read Fig. 9 , Fig.10 and Fig.11As shown, L-shaped plates 301 fixedly connected to the outer steel template 101 are symmetrically arranged in front of the upper and lower sides of the inner steel template 104, and sliding rods 303a fixedly connected to the inner steel template 104 are arranged with clearance fit on the left and right sides of the L-shaped plate 301. The sliding rod 303a is T-shaped to provide guidance for the movement of the inner steel template 104. A slide plate 302 is arranged between the sliding rod 303a and the corresponding L-shaped plate 301. When the two side walls of the slide plate 302 are respectively in contact with the side wall of the baffle 303 close to the side of the L-shaped plate 301 and the front wall of the L-shaped plate 301, the rear wall of the inner steel template 104 and the rear wall of the outer steel template 101 are in the same vertical direction. The inner steel formwork 104 and the outer steel formwork 101 are aligned with each other in a straight manner, so as to quickly align the rear wall of the inner steel formwork 104 and the outer steel formwork 101. After the slide plate 302 is separated from the stop bar 207, there is a space between the side wall of the stop sheet 303 close to the L-shaped plate 301 and the L-shaped plate 301. The space enables the outer steel formwork 101 to move away from the formed concrete, so as to realize the demoulding of the outer steel formwork 101. The slide plate 302 is provided with a slide groove 302a. The inner side of the slide groove 302a is provided with a limit plate 301a with a T-shaped cross section and fixed to the L-shaped plate 301. The cooperation between the limit plate 301a and the slide groove 302a provides a limit for the movement of the slide plate 302. The outer clearance of the rectangular column 305 is matched with a guide tube 304a fixed to the mounting frame 304 to provide a guide for the movement of the rectangular column 305. A connecting rod 306a is fixed at the middle position of the front wall of the worm 306 and is rotatably connected to the mounting frame 304 through a bearing. A rectangular block 307 is fixed to the front end of the connecting rod 306a. When the connecting sleeve 309 rotates, the rectangular block 307 is driven to rotate, thereby driving the worm 306 to rotate. A vibration column 304b fixed to the mounting frame 304 is provided on the side of the operating rod 206 away from the rectangular column 305. When the striking plate 310 impacts and vibrates, it will generate vibration, so that both the inner steel template 104 and the outer steel template 101 vibrate, thereby improving the demoulding effect. With the above arrangement, after the installation of two adjacent steel formwork bodies 100 is completed, the slide plate 302 is operated so that the slide plate 302 is located between the L-shaped plate 301 and the side wall of the baffle 303 close to the L-shaped plate 301, and the worm 306 is rotated to drive the rectangular column 305 to move backward, thereby driving the inner steel formwork 104 to move toward the pouring position, until the two side walls of the slide plate 302 are respectively in contact with the side walls of the L-shaped plate 301 and the baffle 303 close to the L-shaped plate 301, and at this time, the rear wall of the outer steel formwork 101 and the rear wall of the inner steel formwork 104 are in the same vertical plane; When performing the demoulding operation, after the boss 203b is disengaged from the connecting hole 101b, the striking plate 310 is used to impact the vibration column 304b to generate vibration to assist in demoulding, and then the two slides 302 on the same side are operated to approach each other so that the slides 302 are disengaged from the corresponding baffles 303, and then the worm 306 is rotated to drive the rectangular column 305 to move, thereby driving the inner steel formwork 104 and the outer steel formwork 101 to be misaligned, so that the outer steel formwork 101 and the inner steel formwork 104 can be separated from the formed concrete in turn, thereby achieving the demoulding effect.

[0046] Read in detail Fig.11 , Fig.12 and Fig.13 As shown, the shaking assembly includes a connecting sleeve 309 sleeved on the outside of the rectangular block 307, and the outside of the connecting sleeve 309 is rotatably connected to a shaking plate 308 through a bearing. A rocking rod 308a is fixed to the left end of the front wall of the shaking plate 308. The rocking rod 308a can be rotated to drive the shaking plate 308 to rotate. A striking plate 310 is arranged at the rear of the right side of the shaking plate 308. When the striking plate 310 rotates, it can hit the vibration column 304b to achieve the effect of generating vibration. A protrusion 310a rotatably connected to the shaking plate 308 through a bearing is fixed to the left end of the front wall of the striking plate 310. A connecting plate 311 is provided in front of the rocking plate 308, a truncated cone-shaped pinching block 311a is fixed to the front wall of the connecting plate 311, a second plug hole 309a and a first plug hole 308b are respectively provided on both sides of the connecting sleeve 309 and the front wall of the rocking plate 308, and an insertion rod 311b is fixed to the corresponding rear wall where the second plug hole 309a and the first plug hole 308b are located, and the insertion rod 311b is plugged into the corresponding second plug hole 309a and the first plug hole 308b; With the above arrangement, the shaking assembly can be separated from the rectangular block 307, so that in actual use, only one shaking assembly can be used to realize the demoulding operation of the entire steel template body 100; When vibration is required, the rocking plate 308 is operated to make the connecting sleeve 309 sleeved on the outside of the rectangular block 307, so that the rocking rod 308a rotates to drive the rocking plate 308 to rotate, thereby making the striking plate 310 rotate to hit the vibration column 304b to generate vibration; When the worm 306 needs to be driven to rotate, the connecting plate 311 is operated to make the plug rod 311b be plugged into the corresponding socket 2 309a and socket 1 308b respectively. At this time, the rocking plate 308 rotates to drive the rectangular block 307 to rotate, thereby driving the worm 306 to rotate. Example 4

[0047] This embodiment is the fourth embodiment of the present invention. This embodiment provides a steel formwork construction method that is convenient for demoulding during concrete engineering construction. The steel formwork that is convenient for demoulding during concrete engineering construction is demoulded according to the following steps: S1. First, during assembly, the insert strip 102 on the left side of the steel formwork body 100 to be installed is passed through the rectangular groove 101a of the adjacent steel formwork body 100 that has been installed on the left, and then the steel formwork body 100 to be installed is moved downward until the trapezoidal strip 103 in the steel formwork body 100 that has been installed on the left is plugged into the retaining groove 102a of the insert strip 102 on the left wall of the outer steel formwork 101 in the steel formwork body 100 to be installed. At the same time, the insert strip 102 on the lower wall of the steel formwork body 100 to be installed passes through the slot 101c in the installed steel formwork body 100 below. , until the lower wall of the inner and outer steel templates 101 of the steel template body 100 to be installed fits with the upper wall of the inner and outer steel templates 101 of the installed steel template body 100 below, at this time, under the action of the spring 107 in the installed steel template body 100 below, the positioning block 106a in the installed steel template body 100 below is plugged into the retaining groove 102a in the inserting strip 102 of the lower wall of the inner and outer steel templates 101 of the steel template body 100 to be installed, so that the steel template body 100 to be installed is positioned and connected with the installed steel template body 100 on the left and the installed steel template body 100 below; S2, then operate the two installation boxes 201 in sequence to rotate along the inner and outer steel templates 101 of the steel template body 100 to be installed, until the installation box 201 is located outside the side walls of the inner and outer steel templates 101 of the two adjacent steel template bodies 100, at this time, control the operating rod 206 to rotate, drive the gear 204 and the rotating column 202 to rotate, the rotating column 202 applies a force in the direction of the outer steel template 101 to the rectangular bar 203 so that the boss 203b is plugged into the corresponding connecting hole 101b, when the rotating column 202 applies a suitable extrusion force to the rectangular bar 203, under the blocking of the rotating plate 205 on the gear 204, the position of the gear 204 is fixed so that the rotating column 202 continuously maintains a suitable pressure on the rectangular bar 203 to complete the fixed connection between the steel template body 100 to be installed and the adjacent installed steel template body 100; S3. Finally, when demoulding, the blocking bar 207 is operated to rotate to block the other rotating plate 205, and the operating rod 206 is rotated to drive the rotating column 202 to release the force applied to the rectangular bar 203, and then the rectangular bar 203 is operated to disengage the boss 203b from the corresponding connecting hole 101b, and then the slide plate 302 is operated to move away from the blocking piece 303, and the shaking assembly is operated to make the connecting sleeve 309 sleeved on the outside of the rectangular block 307, and the plug rods 311b are respectively plugged into the plug holes. In the second 309a and the socket one 308b, the operating rocker 308a is rotated to drive the rocker plate 308 to rotate, so that the connecting sleeve 309, the connecting rod 306a and the worm 306 rotate, thereby driving the rectangular column 305 to move away from the formed concrete, and the inner steel formwork 104 moves forward a small amount to separate the inner steel formwork 104 from the formed concrete, and then the operating rocker 308a is reversely rotated to separate the outer steel formwork 101 from the formed concrete, and the steel formwork body 100 can be demoulded.

[0048] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0049] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0050] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A steel formwork that facilitates demoulding in concrete engineering construction, characterized in that: include, The steel template body (100) comprises an inner steel template (104), an outer steel template (101) disposed outside the inner steel template (104) and gap-matched with the inner steel template (104), an insert bar (102) fixed to both the left wall and the lower wall of the outer steel template (101), and a trapezoidal bar (103) fixed to the right wall inside the outer steel template (101); A connection mechanism (200) provided on the left wall and the lower wall of the outer steel template (101), comprising a mounting box (201) hinged to the outer steel template (101), a rectangular bar (203) provided inside the mounting box (201), and a rotating column (202) with an elliptical cross-section provided on a side of the rectangular bar (203) away from the outer steel template (101), wherein rotating rods (202a) are fixed at the middle positions of both ends of the rotating column (202), and the rotating rod (202a) is rotatably connected to the mounting box (201) via a bearing, and a gear (204) is fixed on one side of the mounting box (201) corresponding to the outside of the rotating rod (202a), and rotating plates (205) are provided on both sides of the gear (204), and any of the rotating plates (205) abuts against teeth in the gear (204); and, The demoulding mechanism (300) disposed inside the outer steel template (101) comprises a mounting frame (304) disposed in front of the inner steel template (104) and fixedly connected to the outer steel template (101), a worm (306) located inside the mounting frame (304) and vertically disposed to the inner steel template (104), a rectangular column (305) meshingly connected to the worm (306) and fixedly connected to the inner steel template (104), and a shaking assembly.

2. A steel formwork for facilitating demoulding in concrete engineering construction as claimed in claim 1, characterized in that: A moving rod (106) is arranged above the inner side of the outer steel template (101); a positioning block (106a) slidably connected to the outer steel template (101) is fixed to the right end of the moving rod (106); a spring (107) is arranged on the left wall of the positioning block (106a) corresponding to the outside of the moving rod (106); a trapezoidal plate (105) fixedly connected to the outer steel template (101) is arranged at the left end of the spring (107) corresponding to the outside of the moving rod (106) in a clearance fit; the trapezoidal plate The length of the left wall of the trapezoidal plate (105) is smaller than the length of the right wall of the trapezoidal plate (105); a vertical plate (108) is fixed to the left end of the moving rod (106); a moving groove (108a) is provided on the vertical plate (108); a connecting strip (110a) is provided inside the moving groove (108a); an operating block (110) and a sliding block (109) are fixed to the left and right ends of the connecting strip (110a) respectively; and the length of the right wall of the sliding block (109) is smaller than the length of the left wall of the sliding block (109).

3. A steel formwork for facilitating demoulding in concrete engineering construction as claimed in claim 2, characterized in that: A rectangular groove (101a) is provided above the trapezoidal bar (103) corresponding to the right wall of the outer steel template (101); a connection hole (101b) is provided on the right wall of the outer steel template (101) and the upper wall of the outer steel template (101); a slot (101c) is provided at the position of the insertion bar (102) located on the lower side corresponding to the upper wall of the outer steel template (101); a retaining groove (102a) is provided on the left wall of the insertion bar (102) on the lower wall of the outer steel template (101) and the lower wall of the insertion bar (102) on the left wall of the outer steel template (101); and the trapezoidal bar (103) and the positioning block (106a) are respectively matched with the corresponding retaining groove (102a).

4. A steel formwork for facilitating demoulding in concrete engineering construction as claimed in claim 3, characterized in that: A T-shaped plate (203a) is symmetrically fixed to the front wall of the rectangular strip (203); a through slot (201a) is provided at the position of the T-shaped plate (203a) corresponding to the front wall of the installation box (201); the T-shaped plate (203a) passes through the through slot (201a) and is slidably connected to the installation box (201); a boss (203b) adapted to the connection hole (101b) is fixed to the side wall of the rectangular strip (203) close to the outer steel template (101); and an operating rod (206) is fixed to the outside of the rotating rod (202a) on the side of the gear (204) away from the installation box (201).

5. A steel formwork for facilitating demoulding in concrete engineering construction as claimed in claim 4, characterized in that: A stop bar (207) is provided between the two rotating plates (205), the stop bar (207) abuts against any of the rotating plates (205), and the stop bar (207) and one end of the rotating plate (205) close to the front wall of the installation box (201) are respectively fixed with a round rod 1 (205b) and a round rod 2 (207b) that are clearance-matched with the installation box (201), and the rear ends of the round rod 1 (205b) and the round rod 2 (207b) are respectively fixed with a round plate 1 (205b-1) and a round plate 2 (207b-1), and an elastic member (205a) is fixed to the outer side wall of the rotating plate (205), and an inclined plate (201b) is fixed to the outer end of the elastic member (205a), and the inclined plate (201b) is fixedly connected to the installation box (201).

6. A steel formwork for facilitating demoulding in concrete engineering construction as claimed in claim 1, characterized in that: L-shaped plates (301) fixedly connected to the outer steel formwork (101) are symmetrically arranged in front of the upper and lower sides of the inner steel formwork (104), and sliding rods (303a) fixedly connected to the inner steel formwork (104) are gap-fittedly arranged on the left and right sides of the L-shaped plate (301), and the sliding rods (303a) are arranged in a T-shape, and a sliding plate (302) is arranged between the sliding rod (303a) and the corresponding L-shaped plate (301), and a sliding groove (302a) is provided on the sliding plate (302), and a limiting plate (301a) with a T-shaped cross section and fixed to the L-shaped plate (301) is arranged on the inner side of the sliding groove (302a).

7. A steel formwork for facilitating demoulding in concrete engineering construction as claimed in claim 4, characterized in that: A guide tube (304a) fixed to the mounting frame (304) is provided in a clearance fit outside the rectangular column (305); a connecting rod (306a) rotatably connected to the mounting frame (304) via a bearing is fixed to the middle position of the front wall of the worm (306); a rectangular block (307) is fixed to the front end of the connecting rod (306a); and a vibration column (304b) fixed to the mounting frame (304) is provided on a side of the operating rod (206) away from the rectangular column (305).

8. A steel formwork for facilitating demoulding in concrete engineering construction as claimed in claim 7, characterized in that: The shaking assembly comprises a connecting sleeve (309) sleeved on the outside of the rectangular block (307); the outside of the connecting sleeve (309) is rotatably connected to a shaking plate (308) via a bearing; a shaking rod (308a) is fixed to the left end of the front wall of the shaking plate (308); a striking plate (310) is arranged at the rear of the right side of the shaking plate (308); a protrusion (310a) rotatably connected to the shaking plate (308) via a bearing is fixed to the left end of the front wall of the striking plate (310).

9. A steel formwork for facilitating demoulding in concrete engineering construction as claimed in claim 8, characterized in that: A connecting plate (311) is arranged in front of the rocking plate (308), a truncated cone-shaped pinching block (311a) is fixed to the front wall of the connecting plate (311), a second plug hole (309a) and a first plug hole (308b) are respectively provided on both sides of the connecting sleeve (309) and the front wall of the rocking plate (308), and an insertion rod (311b) is fixed to the rear wall of the connecting plate (311) at the position where the second plug hole (309a) and the first plug hole (308b) are located, and the insertion rod (311b) is inserted into the inside of the corresponding second plug hole (309a) and the first plug hole (308b).

10. A steel formwork construction method that facilitates demoulding in concrete engineering construction, characterized in that: The steel formwork for facilitating demoulding of concrete engineering construction as described in any one of claims 5 to 9 is demoulded according to the following steps: S1, when demoulding, the blocking bar (207) is operated to rotate to block the other rotating plate (205), and the operating rod (206) is rotated to drive the rotating column (202) to release the force applied to the rectangular bar (203), and then the rectangular bar (203) is operated to disengage the boss (203b) from the corresponding connecting hole (101b); S2, then operate the slide plate (302) to move in a direction away from the blocking piece (303), operate the shaking assembly to make the connecting sleeve (309) sleeved on the outside of the rectangular block (307), and make the insertion rod (311b) respectively inserted into the second insertion hole (309a) and the first insertion hole (308b), operate the rocking rod (308a) to rotate to drive the rocking plate (308) to rotate, so that the connecting sleeve (309), the connecting rod (306a) and the worm (306) rotate, thereby driving the rectangular column (305) to move away from the formed concrete, and the inner steel formwork (104) moves forward a small amount so that the inner steel formwork (104) is separated from the formed concrete, and then operate the rocking rod (308a) to rotate in the reverse direction so that the outer steel formwork (101) is separated from the formed concrete, and the steel formwork body (100) can be demoulded.

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