Formwork device for mirror-finished concrete precast beams

Abstract

The present application relates to the technical fields of precast beam mould, especially to a mirror surface concrete precast beam formwork device, which comprises a support, a plurality of supports are arranged in sequence to form a mould group, and two mould groups are arranged oppositely, a vibration guiding part is arranged in the middle of the support and can be displaced, and a transmission gear set is arranged below the support; a first pull rod, two ends of the first pull rod are connected with the support above respectively; a second pull rod, one end of the second pull rod is engaged with the transmission gear set, and the other end is connected with the support; the mirror surface concrete precast beam formwork device is provided, the mould vibration is caused by displacement vibration guiding, and the concrete vibration work is completed by cooperating with artificial vibration, the stress is uniform, and the product quality is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of precast beam moulds, in particular to a template device for a mirror concrete precast beam. Background Art

[0002] With the development of technology, materials, equipment and other aspects, prefabricated beams are increasingly used in bridge construction. They are prefabricated in factories and then transported to the construction site for installation and fixation according to the design requirements. This saves time on on-site binding and pouring operations and can be carried out simultaneously with on-site construction, greatly improving work efficiency.

[0003] At present, for the production of precast beams, it is very inconvenient to design corresponding molds according to the corresponding size requirements of the beam body and carry out single production. At the same time, the existing molds are manually vibrated after the steel bars are tied and poured, which easily leads to uneven force on the concrete near the mold and uneven vibration sinking, which easily causes problems such as rod marks and color differences in the surface area. At the same time, vibration leakage or over-vibration is prone to occur near the edges during vibration, thereby producing water ripples, which greatly affects the quality of the finished precast beam and causes the beam body to be scrapped. Therefore, there is an urgent need for a mold that can evenly guide vibration to the concrete. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the above-mentioned technical deficiencies and provide a formwork device for mirror concrete precast beams. The device causes the mold to vibrate through displacement vibration, and cooperates with manual vibration to complete the concrete vibration operation, so that the force is evenly distributed and the quality of the finished product is guaranteed.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] A bracket, wherein a plurality of the brackets are arranged in sequence to form a mold group, and two groups of the mold groups are arranged opposite to each other, a displaceable vibration guide component is provided in the middle of the bracket, and a transmission gear group is provided below the bracket;

[0007] a first pull rod, both ends of which are respectively connected to the upper portion of the bracket;

[0008] A second pull rod, one end of which is meshed and connected with the transmission gear set, and the other end of which is connected with the bracket.

[0009] Preferably, the vibration-guiding component includes a driving shaft rotatably connected to the bracket, and a base and a conductive frame threadedly connected to the driving shaft; a high-frequency vibrator is provided on the conductive frame; a transmission assembly for connection is provided between two adjacent driving shafts, and a sealing end cover is provided at the end.

[0010] Preferably, the drive shaft includes an external threaded sleeve, a transmission shaft and a sliding drive member; the external threaded sleeve is rotatably connected to the bracket, and a ring mouth portion is provided in the middle of the inner wall; the transmission shaft is installed in the center of the external threaded sleeve and contacts the external threaded sleeve through the sliding drive member; the sliding drive member is driven to move by air pressure or hydraulic pressure.

[0011] Preferably, the sliding drive member is provided with a plurality of clamping members connected to the ring mouth portion in the middle, and support portions are provided at both ends, and a plurality of conducting holes are provided in the circumferential direction of the support portions. The sliding drive member is provided with at least one pressure relief member.

[0012] Preferably, a plurality of slide grooves are provided along the axial direction of the transmission shaft; and a plurality of guide blocks adapted to the slide grooves are provided on the inner walls of the sliding drive member and the support portion.

[0013] Preferably, the ring mouth is provided with a plurality of circular protrusions; the clamping member is provided with a docking groove adapted to the circular protrusions; and a spring sheet is provided at the connection between the clamping member and the sliding drive member.

[0014] Preferably, a channel is provided on the sliding drive member; and positioning springs connected to the channel are provided at both ends of the pressure relief member.

[0015] Preferably, a plurality of metal sheets are evenly arranged in the middle of the conductive frame.

[0016] Preferably, the transmission assembly includes an upper half and a lower half connected to the upper half; the upper half and the lower half are spliced ​​to form a sleeve connected to the end of the drive shaft; a plurality of first sealing gaskets are provided in the inner walls of both ends of the sleeve, and a second sealing gasket is provided in the middle.

[0017] Preferably, the inner diameter and outer diameter of the first sealing gasket are both provided with slots, and the slots are filled with sealing liquid.

[0018] Compared with the prior art, the present invention has the following advantages: 1. It relies on the vibration of the vibration-guiding component along the displacement of the mold to vibrate the concrete near the mold, ensuring uniform force during vibration, avoiding problems such as color difference and stick marks, and ensuring the quality of the finished product of the cast beam; 2. Multiple brackets are spliced ​​to form a mold group, and the number of splicing can be reasonably selected according to the casting size of the beam. There is no need to customize the mold from scratch, reducing construction costs and production cycles; 3. The assembly efficiency of the brackets during splicing is improved by cooperating with the transmission gear group through the second pull rod, and mechanical tightening is used to ensure reliability after connection; 4. Corresponding vibration-guiding components are installed in each bracket, which can also be spliced ​​and assembled to meet the use requirements of the mold group, and the vibration-guiding components can be operated in different areas to cooperate with manual vibration to achieve synchronous operation and ensure uniform vibration force. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the overall assembly of a formwork device for a mirrored concrete precast beam;

[0020] Figure 2 A diagram illustrating the structure of a mold assembly for a formwork device for mirrored concrete precast beams;

[0021] Figure 3 A schematic diagram of a support structure of a formwork device for a mirrored concrete precast beam;

[0022] Figure 4 A side view of a vibration-guiding component of a formwork device for a mirrored concrete precast beam;

[0023] Figure 5 A schematic diagram of the connection of a sliding drive component of a formwork device for a mirrored concrete precast beam;

[0024] Figure 6 This is a schematic diagram of the structure of a sliding drive component of a formwork device for a mirrored concrete precast beam;

[0025] Figure 7 This is a schematic diagram of the clamping structure of a template device for a mirrored concrete precast beam;

[0026] Figure 8 This is a schematic diagram of the structure of the sliding drive component of a formwork device for a mirrored concrete precast beam;

[0027] Figure 9 This is a schematic cross-sectional structure diagram of a sliding drive component of a formwork device for a mirrored concrete precast beam;

[0028] Figure 10 This is a schematic diagram of the structure of a pressure relief component of a formwork device for a mirrored concrete precast beam;

[0029] Figure 11 A partial cross-sectional view of an external threaded sleeve of a formwork device for a mirrored concrete precast beam;

[0030] Figure 12 A schematic diagram of the conductive frame structure of a formwork device for mirror-finished concrete precast beams;

[0031] Figure 13 This is a schematic diagram of the sleeve structure of a formwork device for a mirrored concrete precast beam;

[0032] Figure 14 A schematic diagram of an exploded sleeve of a formwork device for a mirrored concrete precast beam;

[0033] Figure 15 A cross-sectional view of a second sealing gasket of a formwork device for a mirrored concrete precast beam;

[0034] Figure 16A partial sectional view of the connection of a first sealing gasket of a formwork device for a mirrored concrete precast beam;

[0035] Figure 17 A cross-sectional view of a transmission shaft of a formwork device for a mirrored concrete precast beam;

[0036] Figure 18 A schematic diagram of a sealing end cover of a formwork device for a mirrored concrete precast beam;

[0037] Figure 19 This is a schematic diagram of the second tie rod structure of a formwork device for a mirrored concrete precast beam.

[0038] In the figure: 1. bracket; 2. mold group; 3. vibration guide component; 4. external threaded sleeve; 5. transmission shaft; 6. sliding drive component; 7. upper half; 8. lower half; 9. sleeve; 101. transmission gear group; 102. first pull rod; 103. second pull rod; 301. drive shaft; 302. base; 303. conduction frame; 304. high-frequency vibrator; 305. transmission assembly; 306. sealing end cover; 307. metal sheet; 401. ring mouth; 402. circular protrusion; 501. slide groove; 601. clamp; 602. support part; 603. conduction hole; 604. pressure relief part; 605. guide block; 606. docking groove; 607. spring sheet; 608. channel; 609. positioning spring; 901. first sealing gasket; 902. second sealing gasket; 903. notch; 904. sealing liquid. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0040] Specific implementation method 1: Combination Figure 1-19As shown, a formwork device for mirror concrete precast beams is characterized in that it includes: a bracket 1, multiple brackets 1 are arranged in sequence to form a mold group 2, and the two groups of mold groups 2 are arranged opposite to each other, a displaceable vibration guide component 3 is provided in the middle of the bracket 1, and a transmission gear group 101 is provided below the bracket 1; a first pull rod 102, the two ends of the first pull rod 102 are respectively connected to the top of the bracket 1; a second pull rod 103, one end of the second pull rod 103 is meshed with the transmission gear group 101, and the other end is connected to the bracket 1; multiple brackets 1 are arranged in sequence to form a mold group 2 support on one side, by adopting two groups of mold groups 2 symmetrically arranged, and using the second pull rod 103 and the subsequent first pull rod in sequence. The connection of rod 102 completes the combined installation of the entire mold. According to the size of the precast beam to be cast, an appropriate number of brackets 1 are selected and installed, which effectively avoids the disadvantages of redesigning the mold and reduces construction costs. In addition, a corresponding vibration guide component 3 is installed on each bracket 1, and multiple vibration guide components 3 are interconnected to achieve the use requirements of a single power to drive the vibration guide component 3 in different areas, simplify its own structure, and facilitate cooperation with manual vibration. Each area is gradually vibrated to ensure uniform force. At the same time, it effectively avoids the color difference or rod print of cement near the mold after molding, improves the quality of the finished product, avoids the scrapping of the beam body, and causes material loss and increased production costs.

[0041] Combine Figure 3 As shown, the vibration guide component 3 includes a drive shaft 301 rotatably connected to the bracket 1, a base 302 and a conductive frame 303 threadedly connected to the drive shaft 301; a high-frequency vibrator 304 is provided on the conductive frame 303; a transmission assembly 305 for connection is provided between two adjacent drive shafts 301, and a sealed end cap 306 is provided at the end. The drive shaft 301 is driven to rotate by an electric motor, and a sliding rod is arranged below the drive shaft 301 for sliding connection to achieve guided displacement of the base 302. The vibration generated by the high-frequency vibrator 304 contacts the mold surface on the bracket 1 through the conductive frame 303, achieving vibration transmission. During the displacement process, the cement near the mold is gradually vibrated, thereby avoiding the occurrence of color difference and stick marks caused by manual vibration that cannot reasonably control the distance from the mold. The overall force is evenly distributed, effectively ensuring construction quality. The sealed end cap 306 achieves a sealed connection to the end of the drive shaft 301 and provides an inlet for the medium.

[0042] Combine Figure 3-12As shown, the drive shaft 301 includes an external threaded sleeve 4, a transmission shaft 5 and a sliding drive member 6; the external threaded sleeve 4 is rotatably connected to the bracket 1, and a ring portion 401 is provided in the middle of the inner wall; the transmission shaft 5 is installed in the center of the external threaded sleeve 4 and contacts the external threaded sleeve 4 through the sliding drive member 6; the sliding drive member 6 is pushed for displacement by air pressure or hydraulic pressure; the external threaded sleeve 4 is rotatably connected to the bracket 1, and a bearing can be added to reduce friction and provide support, while the transmission shaft 5 is arranged in the center of the external threaded sleeve 4, and relies on the sliding drive member 6 to achieve its own support and drive connection with the external threaded sleeve 4. In the working state, the external threaded sleeve 4 The inner portion is filled with a medium, such as high-pressure gas or hydraulic oil. By controlling the gas or liquid pressure, the sliding drive member 6 is driven to adjust the displacement on the transmission shaft 5. When the sliding drive member 6 moves to the ring mouth portion 401, the two are clamped and fixed. The friction force is used to transmit the power of the transmission shaft 5, driving the external threaded sleeve 4 to rotate, completing the displacement adjustment of the base 302. When it is necessary to disengage, the internal pressure is increased to overcome the clamping force between the sliding drive member 6 and the ring mouth portion 401, and the sliding drive member 6 is continued to be pushed for displacement adjustment, thereby achieving the same power to drive the external threaded sleeve 4 in each area to rotate, which is an ingenious structure.

[0043] Combine Figure 18 As shown, in a preferred embodiment, the sealing end cover 306 has two forms. The sealing end cover 306 with an opening is the sealing end cover 306 at the connection between the transmission shaft and the motor, while the fully closed one is the sealing end cover 306 at the end connection of the transmission shaft. At the same time, the sealing end cover 306 is provided with a pipeline for air or hydraulic oil to enter, and the left and right displacement of the sliding drive member 6 is controlled by controlling the movement direction of the medium.

[0044] In a preferred embodiment, a plurality of clips 601 connected to the ring mouth portion 401 are provided in the middle of the sliding drive member 6, and support portions 602 are provided at both ends. A plurality of conducting holes 603 are provided in the circumferential direction of the support portion 602, and at least one pressure relief member 604 is provided on the sliding drive member 6; the upper surface of the clip 601 is adapted to the shape of the ring mouth portion 401. When the sliding drive member 6 is displaced to the ring mouth portion 401, the clip 601 pops out and is connected to the ring mouth portion 401 by snapping. The friction between the two is used to complete the power transmission of the transmission shaft 5, and when it needs to be disengaged, the inner pressure is increased. The internal pressure overcomes the clamping resistance between the clamping piece 601 and the ring mouth part 401, compresses the clamping piece 601 to reset, realizes power separation, and the support part 602 contacts the inner wall of the external threaded sleeve 4 to realize support for the transmission shaft 5. The through hole 603 designed by itself is used for the circulation of the medium. The design of the pressure relief piece 604 realizes the pressure relief effect as the pressure increases after the clamping piece 601 is clamped with the ring mouth part 401. At the same time, the staff can observe whether the clamping piece 601 is completely docked with the ring mouth part 401 according to the pressure change, leaving the staff with reaction time for operation.

[0045] Combined with the graph and Figure 6 As shown, a plurality of slide grooves 501 are provided along the axial direction of the transmission shaft 5; a plurality of guide blocks 605 adapted to the slide grooves 501 are provided on the inner wall of the sliding drive member 6 and the support portion 602; the sliding connection between the slide grooves 501 and the guide blocks 605 realizes the displacement of the sliding drive member 6 and satisfies the power transmission requirement of the transmission shaft 5;

[0046] Combine Figure 7 、 Figure 8 and Figure 11 As shown, the ring mouth portion 401 is provided with a plurality of circular protrusions 402; the clamping member 601 is provided with a docking groove 606 adapted to the circular protrusion 402, and a spring piece 607 is provided at the connection between the clamping member 601 and the sliding drive member 6; the docking groove 606 on the clamping member 601 is engaged with the circular protrusion 402 of the ring mouth portion 401 to improve the strength of power transmission, and the circular protrusion 402 and the docking groove 606 of the corresponding shape are used to facilitate the connection between the two without interference, and the design of the spring piece 607 realizes the support of the clamping member 601, and when it contacts the inner wall of the external threaded sleeve 4, the spring piece 607 is compressed, and when the clamping member 601 is aligned with the ring mouth portion 401, the spring piece 607 elastically resets to realize the connection between the two;

[0047] The sliding drive member 6 is provided with sliding slots that are slidably connected to both sides of the clamping member 601, which can achieve the displacement of the clamping member 601 by a certain distance, and cooperate with the spring sheet 607 to complete the adjustment of the position of the clamping member 601 itself;

[0048] Combine Figure 9 and Figure 10 As shown, in a preferred embodiment, a channel 608 is provided on the sliding drive member 6; positioning springs 609 connected to the channel 608 are provided at both ends of the pressure relief member 604; the positioning springs 609 realize the positioning of the pressure relief member 604, and when the internal pressure exceeds the elastic force of the positioning springs 609, the pressure relief member 604 is pushed to compress the positioning springs 609, thereby opening the channel 608 and completing the pressure relief operation. The staff can judge whether the sliding drive member 6 has moved to the ring mouth portion 401 area based on the pressure change, while leaving the staff with reaction time; wherein, the middle part of the channel 608 and the connection between the pressure relief member 604 and the middle part of the channel 608 are also provided with a plurality of small holes for medium circulation;

[0049] Combine Figure 12 As shown, a plurality of metal sheets 307 are evenly arranged in the middle of the conductive frame 303; by arranging a plurality of thinner metal sheets 307 on the conductive frame 303, the overall conduction effect is improved and the loss in conduction is reduced during the vibration force conduction process, wherein the metal sheets 307 are preferably made of iron;

[0050] Combine Figure 3 、 Figure 4 and Figure 12 As shown, the conductive frame 303 is arranged obliquely, parallel to and in contact with the mold portion of the bracket 1. The vibration force of the high-frequency vibrator 304 is transmitted through the conductive frame 303 to vibrate the cement near the mold portion. At the same time, the conductive frame 303 extends obliquely downward to better adapt to the sinking of the cement during vibration, ensuring uniform force during the vibration operation.

[0051] A first hydraulic cylinder may be provided on the conductive frame 303 to push the conductive frame 303 to contact and connect with the bracket 1. A mounting seat is provided between the base 302 and the conductive frame 303, and a rubber shock-absorbing pad is provided at the connection between the mounting seat and the base 302 to prevent the vibration force of the high-frequency vibrator 304 from affecting the base 302 and the external threaded sleeve 4.

[0052] Combine Figure 13-16 As shown, the transmission assembly 305 includes an upper half 7 and a lower half 8 connected to the upper half 7; the upper half 7 and the lower half 8 are spliced ​​together to form a sleeve 9 connected to the end of the drive shaft 301; a plurality of first sealing gaskets 901 are provided in the inner walls of both ends of the sleeve 9, and a second sealing gasket 902 is provided in the middle; the sealing sleeve 9 is formed by splicing the upper half 7 and the lower half 8 to connect and seal the end of the external threaded sleeve 4, and at the same time, the middle parts of the upper half 7 and the lower half 8 have a step portion equal to the inner diameter of the external threaded sleeve 4, which can ensure that the sliding drive member 6 is smoothly displaced between two adjacent external threaded sleeves 4; and the first sealing gasket 901 and the second sealing gasket 902 are used in combination to effectively ensure the overall sealing performance;

[0053] The second sealing gasket 902 is arranged near the connection between the sleeve 9 and the external threaded sleeve 4, which can seal the connection between the two. In addition, the second sealing gasket 902 is stepped, which effectively improves the sealing performance.

[0054] Combine Figure 16 As shown, in a preferred embodiment, the inner diameter and outer diameter of the first sealing gasket 901 are both provided with a slot 903, and the slot 903 is filled with a sealing liquid 904; the slot 903 on the first sealing gasket 901 is designed and filled with a sealing liquid 904, which further improves the sealing performance after the sleeve 9 is connected to the external threaded sleeve 4, ensuring that the overall structure is stable and reliable.

[0055] Combine Figure 17 As shown, both ends of the transmission shaft 5 have polygonal protrusions and corresponding recesses, and the protrusions are connected with the recesses to achieve docking transmission between two adjacent transmission shafts 5.

[0056] Combine Figure 19As shown, one end of the second pull rod 103 is provided with a rack portion meshing with the transmission gear set 101, and the other end is fixed to the bracket 1 on the other side by a nut. The second pull rod 103 is driven to move by the rotation of the transmission gear set 101, thereby realizing the connection and position adjustment between the two sets of mold assemblies 2, and effectively improving the assembly efficiency.

[0057] The transmission gear set 101 is composed of a rotating rod and a gear, and is connected to a corresponding driving structure to drive the rotating rod to rotate.

[0058] Combine Figure 1-19 As shown in the figure, the specific vibration operation process is as follows:

[0059] Compressed air or hydraulic oil is injected into the external threaded sleeve 4 through the sealing end cover 306 to drive the sliding drive member 6 to move. When the clamping member 601 is docked with the ring mouth portion 401 on the external threaded sleeve 4, the motor for driving the transmission shaft 5 to rotate is started. Through the rotation of the motor, power is transmitted to the external threaded sleeve 4. As the external threaded sleeve 4 rotates, the base 302 is driven to move. During the displacement process, the high-frequency vibrator 304 works, and the vibration force is transmitted to the mold part of the bracket 1 by the conductive frame 303, vibrating the concrete close to the mold part. At this time, manual vibration is performed simultaneously in the middle of the corresponding area to ensure that the overall vibration force is uniform, avoid color difference, rod mark, water mark phenomenon, etc., ensure the yield rate of prefabricated beams, and avoid waste of resources;

[0060] To sum up, the present invention forms a mold group 2 by splicing multiple brackets 1 in sequence, and adopts double-group cooperation to form a casting mold. The corresponding number of brackets 1 can be selected for assembly according to precast beams of the same model but different sizes, thereby reducing construction costs. At the same time, the second pull rod 103 cooperates with the transmission gear group 101 to facilitate the tightening and fixing of the two groups of mold groups 2, thereby increasing the assembly speed. In addition, the vibration guide components 3 of each bracket 1 cooperate with manual vibration to achieve regional operation, ensure the vibration effect, effectively ensure the yield rate, and avoid material waste. At the same time, the drive shaft 301 can realize single-power regional control of the movement of the base 302 on each bracket 1. The structure is compact, reduces power layout, has a clever structure, and can be assembled and connected in conjunction with the bracket 1. The overall structure is applicable to each other.

[0061] It should be understood that the above-described specific embodiments of the present invention are merely illustrative or illustrative of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the appended claims are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A formwork device for mirrored concrete precast beams, characterized in that: include: A bracket (1), wherein a plurality of the brackets (1) are sequentially arranged to form a mold group (2), and two groups of the mold groups (2) are arranged opposite to each other, a displaceable vibration guide component (3) is provided in the middle of the bracket (1), and a transmission gear group (101) is provided below the bracket (1); A first pull rod (102), wherein both ends of the first pull rod (102) are respectively connected to the upper portion of the bracket (1); A second pull rod (103), one end of the second pull rod (103) is meshed and connected to the transmission gear set (101), and the other end is connected to the bracket (1); The vibration-guiding component (3) comprises a driving shaft (301) rotatably connected to the bracket (1), and a base (302) and a conducting frame (303) threadedly connected to the driving shaft (301); a high-frequency vibrator (304) is provided on the conducting frame (303); a transmission assembly (305) for connection is provided between two adjacent driving shafts (301), and a sealing end cap (306) is provided at each end; The drive shaft (301) comprises an external threaded sleeve (4), a transmission shaft (5) and a sliding drive member (6); the external threaded sleeve (4) is rotatably connected to the bracket (1), and a ring opening (401) is provided in the middle of the inner wall; the transmission shaft (5) is installed at the center of the external threaded sleeve (4) and contacts the external threaded sleeve (4) through the sliding drive member (6); the sliding drive member (6) is displaced by air pressure or hydraulic pressure; The sliding drive member (6) is provided with a plurality of clamping members (601) connected to the ring mouth portion (401) in the middle thereof, and support portions (602) are provided at both ends respectively, and the support portions (602) are provided with a plurality of conducting holes (603) in the circumferential direction thereof. The sliding drive member (6) is provided with at least one pressure relief member (604).

2. The formwork device for a mirrored concrete precast beam according to claim 1, characterized in that: A plurality of slide grooves (501) are provided along the axial direction of the transmission shaft (5); and a plurality of guide blocks (605) adapted to the slide grooves (501) are provided on the inner walls of the sliding drive member (6) and the support portion (602).

3. The formwork device for mirrored concrete precast beams according to claim 1, characterized in that: The ring mouth portion (401) is provided with a plurality of circular protrusions (402); the clamping member (601) is provided with a docking groove (606) adapted to the circular protrusions (402); and a spring sheet (607) is provided at the connection between the clamping member (601) and the sliding drive member (6).

4. The formwork device for mirrored concrete precast beams according to claim 1, characterized in that: The sliding drive member (6) is provided with a channel (608); and positioning springs (609) connected to the channel (608) are provided at both ends of the pressure relief member (604).

5. The formwork device for mirrored concrete precast beams according to claim 1, characterized in that: A plurality of metal sheets (307) are evenly arranged in the middle of the conductive frame (303).

6. The formwork device for mirrored concrete precast beams according to claim 1, characterized in that: The transmission assembly (305) comprises an upper half (7) and a lower half (8) connected to the upper half (7); the upper half (7) and the lower half (8) are spliced ​​together to form a sleeve (9) connected to the end of the drive shaft (301); a plurality of first sealing gaskets (901) are provided in the inner walls of both ends of the sleeve (9), and a second sealing gasket (902) is provided in the middle.

7. The formwork device for mirrored concrete precast beams according to claim 6, characterized in that: The inner diameter and outer diameter of the first sealing gasket (901) are both provided with slots (903), and the slots (903) are filled with sealing liquid (904).

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