Secondary forming process for diaphragm plate

Abstract

The invention provides a secondary forming process for a diaphragm plate. The secondary forming process comprises the steps of pre-burying an internal thread sleeve, arranging a connecting framework, arranging a mold, forming and the like. According to the process, T-shaped beam forming and diaphragm plate forming are divided into two process steps, a plurality of internal thread sleeves are pre-buried on the two sides of a web plate when a T-shaped beam is independently formed, so that a framework composed of a plurality of connecting rods screwed into the internal thread sleeves is arranged, and a connecting foundation is provided for a diaphragm plate component to be formed; the positions and the number of the transverse partition plates do not need to be considered when the T-shaped beam mold is opened, so that workers can mold the transverse partition plates at the preset positions of the web plates on the T-shaped beam according to preset requirements on the premise that the T-shaped beam is formed, and the mold opening cost of the mold and the bridge erecting time are saved.

Description

Technical Field

[0001] The invention relates to the field of bridge construction, and in particular to a secondary molding process for a diaphragm. Background Art

[0002] When building an elevated highway or bridge, in order to improve the erection efficiency, a complete highway will be divided into multiple splicing sections. Each splicing section is cast in advance with concrete and steel bars. When in use, the corresponding splicing section is transported to the construction location and spliced ​​to complete the erection of the predetermined section. The splicing section usually includes a T-beam, which includes a web plate that plays a supporting role. The top of the web plate has a wing plate extending laterally outward. In order to increase the stability of the T-beam, a diaphragm member perpendicular to the web plate is set on both sides of the web plate. The existing T-beam and diaphragm members are cast in one time using a set of molds, but this design has shortcomings: like Figure 8 As shown, in a straight section of a highway or bridge, multiple T-beams extend in a straight direction and the diaphragm components are in a horizontal state. However, when the highway or bridge is affected by the terrain and turns, the T-beams of the corresponding section must also be bent into a corresponding arc, resulting in changes in the number and position of the diaphragm components. For example, the diaphragm components of the turning section in the figure have a certain deflection angle relative to the diaphragm components of the straight section. Affected by this, the T-beams at the corresponding turning section need to be re-made into molds, and the cost of consumption is high.

[0003] Remaking the T-beam mold for the curved section takes a long time, which can easily affect the erection efficiency of the entire elevated highway or bridge. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide a secondary molding process for diaphragms, which pre-buries a plurality of internal threaded sleeves on both sides of the web when the T-beam is formed separately, and secondary molds diaphragm components on both sides of the web of the T-beam according to the changes in road sections. Under the premise of not affecting the quality of the diaphragms on the T-beam, the T-beam mold is no longer affected by the position and number of the diaphragms during mold opening, thereby avoiding repeated mold opening of the T-beam mold due to changes in the position of the diaphragms, reducing the cost of mold opening, and improving the efficiency of bridge or highway erection.

[0005] The technical solution of the present invention is achieved in this way: A secondary molding process for a diaphragm includes the following steps: S1: pre-embedded internal thread sleeves; when the T-beam is cast separately according to a predetermined shape, a plurality of internal thread sleeves connected to the outside are pre-embedded at the positions on the left and right sides of the web of the T-beam according to a predetermined layout; S2: Setting a connection skeleton; presetting a plurality of connection rods corresponding to the number of the internal threaded sleeves, one end of the connection rods having a threaded section, and sequentially screwing the threaded sections of the plurality of connection rods into the corresponding internal threaded sleeves in a horizontal direction to form a connection skeleton on the left and right sides of the web; S3: Setting the mold; setting the diaphragm mold around the corresponding connection frame, and making the diaphragm mold close to the web; S4: forming; pouring concrete into the diaphragm mold to form a diaphragm member, so that the diaphragm member and the connecting frame together form the diaphragm.

[0006] Preferably, the diaphragm mold includes a first enclosure panel located on the front and rear sides of the connecting frame and parallel to the connecting rod, a second enclosure panel perpendicular to the connecting rod is threadedly connected between the two first enclosure panels, and a plurality of positioning holes corresponding to the plurality of connecting rods are reserved on the second enclosure panel: in step S3, the other end of the connecting rod without a threaded section passes through the corresponding positioning hole, so that after step S4, the plurality of connecting rods are exposed outside the diaphragm component; the positioning holes can reserve space for the connecting rod to pass through, so that after the diaphragm component is formed, the exposed connecting rod portion can be connected to the diaphragm components on other T-beams.

[0007] Preferably, one end of the first enclosure panel facing the second enclosure panel has a support plate that fits on the second enclosure panel, and the support plate and the second enclosure panel are provided with waist-shaped grooves with corresponding positions. In step S3, after the connecting rod passes through the positioning hole, the threaded fastener is inserted into the waist-shaped groove and locked by a nut, so that the first enclosure panel and the second enclosure panel form a threaded connection; compared with opening a round hole, the reserved waist-shaped groove can provide sufficient penetration space for the threaded fastener, and even if there is a size deviation, the first enclosure panel and the second enclosure panel can be connected in place.

[0008] Preferably, the diaphragm mold is adjusted into place by an adjusting mechanism, which includes a base for supporting the diaphragm mold, and the base is connected to a lifting mechanism. In step S3, the lifting mechanism drives the base to rise and fall to adjust the height of the diaphragm mold into place; to ensure that the diaphragm component is successfully formed at the predetermined position.

[0009] Preferably, the adjustment mechanism also includes a support assembly, which includes two telescopic support rods for preventing the diaphragm mold from falling over, one end of the telescopic support rod is hinged to the base, and the other end is hinged to the corresponding first enclosure. In step S3, the telescopic length of the telescopic support rod itself is adjusted to keep the diaphragm mold in an upright state; so as to prevent the diaphragm mold from falling over and causing the formed diaphragm component to be misaligned.

[0010] Preferably, the telescopic support rod includes a first fixed rod and a first movable rod which are threadedly connected. In step S3, the telescopic length of the telescopic support rod itself is changed by adjusting the threaded matching length of the first fixed rod and the first movable rod. The threaded engagement adjustment method is simple and efficient. After being screwed into place, the self-locking characteristics of the thread can ensure that the first movable rod will not loosen in the reverse direction, thereby preventing the diaphragm mold from falling forward or backward.

[0011] Preferably, the diaphragm mold includes a top plate located at the top of the connecting frame, and a pressing assembly for pressing the diaphragm mold inward is arranged between the wing plate of the T-beam and the top plate, and the pressing assembly includes a telescopic pressing rod arranged between the top plate and the wing plate of the T-beam. In step S3, the telescopic length of the telescopic pressing rod is adjusted so that the diaphragm mold is tightly attached inward to the web of the T-beam to prevent leakage at the upper end of the diaphragm mold during pouring of concrete.

[0012] Preferably, the wing end of the T-beam has a plurality of U-shaped steel frame exposed at front and rear intervals, and the top plate has two supports spaced front and rear, which are connected by a cross bar; in step S3, a horizontal rod is inserted into the U-shaped steel frame, and then the two ends of at least one telescopic top pressure rod are respectively hinged on the cross bar and the horizontal rod to set the telescopic top pressure rod in place; when setting the telescopic top pressure rod, by inserting a horizontal rod into the U-shaped steel frame, the U-shaped steel frame on the T-beam is effectively used as a force support point, and there is no need to open holes in the wing of the T-beam or set up additional connecting parts, which is simple to operate.

[0013] Preferably, the telescopic push rod comprises a second fixed rod and a second movable rod connected by threads. In step S3, the length of the threaded fit between the second fixed rod and the second movable rod is adjusted to change the telescopic length of the telescopic push rod. The adjustment method of thread engagement is simple and efficient. After being screwed into place, the self-locking property of the thread can ensure that the second movable rod will not loosen in the reverse direction, so that the diaphragm mold will not be far away from the web of the T-beam.

[0014] Preferably, connecting seats are provided on the bases of the two adjusting mechanisms on the left and right sides of the web. In step S3, a pull rod is set between the two connecting seats to prevent the two adjusting mechanisms from moving away from each other, so that the two diaphragm molds are always tightly attached to the two sides of the web; to prevent leakage from the lower end of the diaphragm mold when pouring concrete.

[0015] Preferably, after step S3, there is further step S3a: spraying sealant into the gap between the positioning hole and the connecting rod and the joint between the diaphragm mold and the web to prevent leakage of concrete after pouring into the diaphragm mold.

[0016] The beneficial effects of the present invention using the above technical solution are: The present invention divides T-beam forming and diaphragm forming into two process steps, and pre-buries a plurality of internal threaded sleeves on both sides of the web when the T-beam is formed alone, so as to set a skeleton composed of a plurality of connecting rods screwed into the internal threaded sleeves, thereby providing a connection basis for the diaphragm component to be formed, so that the position and number of the diaphragms do not need to be considered when the T-beam mold is opened, thereby enabling workers to form the diaphragms according to predetermined requirements at predetermined positions on the web of the T-beam on the premise that the T-beam has been formed, thereby saving the cost of mold opening and the time of bridge erection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the T-beam after it is formed separately; Figure 2 A schematic diagram of a connection framework formed after a connecting rod is inserted into an internally threaded sleeve; Figure 3 It is a schematic diagram of the enclosure, top plate and bottom plate of the diaphragm mold being arranged around the connection frame; Figure 4 A schematic diagram of threading the longitudinal plate of the diaphragm mold onto the two enclosure plates; Figure 5 This is a schematic diagram of the diaphragm after secondary molding and the diaphragm mold is removed; Figure 6 This is a cross-sectional view of the connecting rod position after the secondary molding of the diaphragm; Figure 7 A schematic diagram of the bases of two adjustment mechanisms being connected via a pull rod; Figure 8 It is a schematic diagram of the deflection angle of the diaphragm in the straight section and the curved section in the background technology; Fig. 9 A flowchart of the method steps of the present invention; The reference numerals of the figures are: 1-T-beam, 2-internal threaded sleeve, 3-connecting frame, 4-diaphragm mold, 4a-casting port, 5-adjusting mechanism, 6-telescopic top pressure rod, 7-diaphragm member, 8-pull rod, 11-web, 12-wing plate, 13-U-shaped steel frame, 14-support beam, 31-connecting rod, 41-second enclosure, 42-first enclosure, 43-reinforcement rib plate, 44-top plate, 45-bottom plate, 46- Support plate, 47-waist groove, 51-base, 52-scissors lifting mechanism, 53-manual oil pump, 54-telescopic support rod, 55-universal wheel, 56-guide rod, 541-first fixed rod, 542-first movable rod, 543-first nut, 561-load-bearing nut, 61-first fixed rod, 62-second movable rod, 63-second nut, 64-horizontal rod, 65-support, 66-cross bar, 81-connecting seat. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0020] The specific implementation methods of the present invention are as follows: like Figure 1-7 As shown, this embodiment provides a secondary molding process for a diaphragm, comprising the following steps: S1: pre-embed the internal thread sleeve 2; when the T-beam 1 is cast separately according to a predetermined shape, a plurality of internal thread sleeves 2 connected to the outside are pre-embedded at the positions on the left and right sides of the web 11 of the T-beam 1 according to a predetermined layout; S2: Setting a connection skeleton 3; presetting a plurality of connection rods 31 corresponding to the number of the internal threaded sleeves 2, wherein the connection rods 31 may be steel bars with relatively high strength, and one end of the connection rods 31 may have a threaded section, and sequentially screwing the threaded sections of the plurality of connection rods 31 into the corresponding internal threaded sleeves 2 in a horizontal direction to form a connection skeleton 3 on the left and right sides of the web 11; S3: Setting a mold; setting a diaphragm mold 4 around the corresponding connecting frame 3, and making the diaphragm mold 4 close to the web 11; S4: Molding; the upper end of the diaphragm mold 4 has a reserved pouring port 4a, through which concrete is poured into the diaphragm mold 4 to form a diaphragm member 7, so that the diaphragm member 7 and the connecting frame 3 together form the diaphragm; wherein, the diaphragm member 7 can be stably connected to both sides of the web 11 of the T-beam 1 by relying on the threaded connection force formed between the connecting frame 3 and the internal threaded sleeve 2 to ensure that the diaphragm will not detach from the T-beam 1, thereby allowing the secondary molded diaphragm to achieve the same effect as the diaphragm directly molded once with the T-beam 1.

[0021] Further, if Figure 3-4As shown, the diaphragm mold 4 includes a first enclosure 42 located on the front and rear sides of the connecting frame 3 and parallel to the connecting rod 31. A plurality of longitudinally crossed reinforcing ribs 43 are arranged on the outer wall of the first enclosure 42. Considering the subsequent casting connection between multiple T-beams 1, the horizontal length of the connecting rod 31 is greater than the horizontal length of the first enclosure 42. A second enclosure 41 perpendicular to the connecting rod 31 is threadedly connected between the two first enclosures 42, and a plurality of positioning holes corresponding to the plurality of connecting rods 31 are reserved on the second enclosure 41; in step S3, the other end of the connecting rod 31 without a threaded section passes through the corresponding positioning hole, so that after step S4, multiple connecting rods 31 are exposed outside the diaphragm component 7; the positioning hole can leave space for the connecting rod 31 to pass through, and it is also convenient for the diaphragm mold 4 to be set in place at a predetermined position, so that after the diaphragm component 7 is formed, the exposed portion of the connecting rod 31 can be cast and connected with the diaphragm components 7 on other T-beams 1, so that multiple side-by-side T-beams 1 are connected as one.

[0022] Furthermore, considering the demoulding and positioning issues of the diaphragm mold 4, the first enclosure panel 42 and the second enclosure panel 41 are disassembled and assembled through a threaded connection, wherein the end of the first enclosure panel 42 facing the second enclosure panel 41 has a support plate 46 that fits on the second enclosure panel 41, and the support plate 46 and the second enclosure panel 41 are provided with waist-shaped grooves 47 with corresponding positions. In step S3, after the connecting rod 31 passes through the positioning hole, the threaded fastener is inserted into the waist-shaped groove 47 and is locked by a nut, so that the first enclosure panel 42 and the second enclosure panel 41 form a threaded connection; compared with opening a round hole, the waist-shaped groove 47 can provide sufficient penetration space for the threaded fastener, even if there is a size or position deviation between the support plate 46 and the second enclosure panel 41, the first enclosure panel 42 and the second enclosure panel 41 can also be connected in place, and the first enclosure panel 42 and the second enclosure panel 41 will not be difficult to connect, thereby successfully completing the forming of the diaphragm.

[0023] Furthermore, the positions of the diaphragms are different for T-beams 1 of different specifications. Therefore, in the present embodiment, the diaphragm mold 4 is adjusted into place by an adjusting mechanism 5. The adjusting mechanism 5 includes a base 51 for supporting the diaphragm mold 4. The diaphragm mold 4 has a bottom plate 45 connected to the first enclosure 42 and the second enclosure 42. The bottom plate 45 is supported by the base 51. The base 51 is connected to a lifting mechanism. The type of the lifting mechanism is not limited. For example, in the present embodiment, the lifting mechanism is an existing scissor lift mechanism 52. The bottom of the scissor lift mechanism 52 is provided with a universal wheel 55 for easy movement. The universal wheel 55 is driven by a hydraulic cylinder (not shown). The hydraulic cylinder is controlled by a manual oil pump 53 for easy control of the lifting height of the base 51. In step S3, by controlling the manual oil pump 53, the lifting mechanism drives the base 51 to rise and fall within the range of 100mm-500mm to adjust the diaphragm molds 4 of different specifications to the corresponding positions, so as to ensure that the diaphragm component 7 is smoothly formed at the predetermined position.

[0024] Furthermore, considering that the transported diaphragm mold 4 is prone to fall forward and backward without restriction, the adjustment mechanism 5 also includes a support assembly, which includes two telescopic support rods 54 for preventing the diaphragm mold 4 from falling over, and one end of the telescopic support rod 54 is hinged to the base 51. In this embodiment, the base 51 is provided with a hinge seat, one end of the telescopic support rod 54 is hinged to the hinge seat, and the other end is hinged to the corresponding first enclosure 42. In this embodiment, the other end of the telescopic support rod 54 is hinged to the reinforcing rib plate 43 provided on the first enclosure 42. In step S3, the telescopic length of the telescopic support rod 54 itself is adjusted to keep the diaphragm mold 4 in an upright state; to prevent the diaphragm mold 4 from falling over and causing the formed diaphragm component 7 to be misaligned.

[0025] Furthermore, the telescopic support rod 54 can be a cylinder or a threaded telescopic rod. Taking into account the cost issue and adjustment efficiency, the threaded telescopic rod is preferably selected in this embodiment. The telescopic support rod 54 includes a first fixed rod 541 and a first movable rod 542 that are threadedly connected. In step S3, the telescopic length of the telescopic support rod 54 itself is changed by adjusting the thread matching length of the first fixed rod 541 and the first movable rod 542; the threaded screw-in adjustment method is simple and efficient. After being screwed into place, the self-locking characteristics of the thread can ensure that the first movable rod 542 will not loosen in the reverse direction, thereby preventing the diaphragm mold 4 from falling forward or backward.

[0026] Furthermore, after the first fixed rod 541 and the first movable rod 542 that are threaded together are adjusted to the right length, although the first movable rod 542 will not slide in the opposite direction in the axial direction, it is easy to produce a rotation tendency in the circumferential direction, which affects the position accuracy of the diaphragm mold 4. Therefore, a first nut 543 is threadedly fitted on the first movable rod 542. When the first movable rod 542 is telescoped into place, the first nut 543 is rotated and attached to the end of the first fixed rod 541 to limit the first movable rod 542 from rotating along its own axis, so that the diaphragm mold 4 remains stable.

[0027] Furthermore, the diaphragm mold 4 includes a top plate 44 located at the top of the connecting frame 3, and the top plate 44 is connected between the second enclosure plate 41 and the two first enclosure plates 42. In order to make the upper end of the diaphragm mold 4 close to the web 11 and avoid a gap between the upper end of the diaphragm mold 4 and the web 11, a pressing assembly for pressing the diaphragm mold 4 inward is provided between the wing plate 12 of the T-beam 1 and the top plate 44. The pressing assembly includes a telescopic pressing rod 6 provided between the top plate 44 and the wing plate 12 of the T-beam 1. In step S3, the telescopic length of the telescopic pressing rod 6 is adjusted to make the diaphragm mold 4 close to the web 11 of the T-beam 1 inward to prevent the upper end of the diaphragm mold 4 from leaking when pouring concrete. In this embodiment, the method of setting the pressing assembly is simple and efficient. Specifically, the top plate 44 has two supports 65 spaced apart front and back, and a cross bar 6 is passed between the two supports 65. 6 connection; since the T-beams need to be cast and connected, the end of the wing plate 12 of the T-beam 1 has a plurality of U-shaped steel frame 13 spaced front and rear and exposed. In step S3, a horizontal rod 64 is inserted into the U-shaped steel frame 13, and then the two ends of at least one telescopic top pressure rod 6 are respectively hinged on the cross bar 66 and the horizontal rod 64 to set the telescopic top pressure rod 6 in place; in this embodiment, the two telescopic top pressure rods 6 are set between the cross bar 66 and the horizontal rod 64; when setting the telescopic top pressure rod 6, by inserting a horizontal rod 64 into the U-shaped steel frame 13, the U-shaped steel frame 13 on the T-beam is effectively used as a force support point, and there is no need to drill holes on the wing plate 12 of the T-beam 1 or set up additional connecting parts. The operation is simple. After the casting of the diaphragm member 7 is completed, it is only necessary to pull the horizontal rod 64 out of the U-shaped steel frame 13, and the efficiency of disassembly and assembly is also high.

[0028] Furthermore, the telescopic push rod 6 can be a cylinder or a threaded telescopic rod. Considering the cost, adjustment efficiency and adjustment accuracy, the threaded telescopic rod is preferred in this embodiment. The telescopic push rod 6 includes a second fixed rod 61 and a second movable rod 62 connected by threads. In step S3, the length of the threaded fit of the second fixed rod 61 and the second movable rod 62 is adjusted to change the telescopic length of the telescopic push rod 6. The adjustment method of threaded engagement is simple and efficient. After being screwed into place, the self-locking property of the thread can ensure that the second movable rod 62 will not loosen in the reverse direction, so that the diaphragm mold 4 will not be far away from the web 11 of the T-beam 1; wherein, the second movable rod 62 is threadedly fitted with a second nut 63. When the second movable rod 62 is telescoped into place, the second nut 63 is rotated and attached to the end of the second fixed rod 61 to limit the second movable rod 62 from rotating along its own axis, so that the diaphragm mold 4 remains stable.

[0029] Furthermore, in addition to the top pressing assembly provided at the upper end of the diaphragm mold 4, in this embodiment, a component for making the diaphragm mold 4 close to the web is also provided at the lower end of the diaphragm mold. Specifically, Figure 7 As shown, in order to facilitate the setting of the diaphragm mold 4, the bottom of the web 11 is lifted up by the support beam 14 to lift up the entire T-beam 1 so that the T-beam 1 is separated from the ground. On the left and right sides of the web 11, the bases 51 of the two adjustment mechanisms 5 are provided with connecting seats 81. In step S3, a pull rod 8 is set between the two connecting seats 81 to prevent the two adjustment mechanisms 5 from moving away from each other. The pull rod 8 passes through the gap between the web 11 and the ground. The connection method of the pull rod 8 and the connecting seat 81 can be a threaded connection, so that the two diaphragm molds 4 are always tightly attached to the two sides of the web 11; to prevent the lower end of the diaphragm mold 4 from leaking when pouring concrete.

[0030] Furthermore, in order to ensure the stable lifting and lowering of the diaphragm mold 4, a guide assembly is also provided in the present embodiment, and the guide assembly includes a guide rod 56 fixed to the ground and extending in the longitudinal direction. A guide hole is provided on the base 51, and the guide rod 56 is inserted into the guide hole. In step S3, the guide rod 56 slides in the guide hole to guide the lifting and lowering of the base 51. In addition, the guide rod 56 is a screw rod, and the thread on the screw rod is matched with a load-bearing nut 561 located at the lower end of the base 51. In step S3, when the height of the base 51 is adjusted to the right position, the load-bearing nut 561 can be rotated to fit the lower end surface of the base 51 to share the load-bearing force of the scissors lifting mechanism 52 on the diaphragm mold 4.

[0031] Furthermore, under ideal conditions, relying on the force of the telescopic top pressure rod 6 and the pull rod 8, the diaphragm mold 4 is already close to the web 11, but in reality there are still tiny gaps between the diaphragm mold 4 and the web 11, and between the connecting rod 31 and the positioning hole. To ensure that there will be no leakage after pouring the concrete, after step S3, there is also step S3a: spraying sealant into the gap between the positioning hole and the connecting rod 31, and into the joint between the diaphragm mold 4 and the web 11. The sealant can be polyurethane sealant or epoxy resin sealant, or other sealants that prevent concrete leakage. The purpose is to prevent leakage after the concrete is poured into the diaphragm mold 4.

[0032] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A secondary molding process for a diaphragm, characterized in that: The following steps are involved: S1: pre-embed an internal thread sleeve (2); when the T-beam (1) is cast separately according to a predetermined shape, a plurality of internal thread sleeves (2) connected to the outside are pre-embedded at positions on the left and right sides of the web (11) of the T-beam (1) according to a predetermined layout; S2: setting a connection skeleton (3); presetting a plurality of connection rods (31) corresponding in number to the number of the internal threaded sleeves (2), wherein one end of the connection rods (31) has a threaded section, and sequentially screwing the threaded sections of the plurality of connection rods (31) into the corresponding internal threaded sleeves (2) in a horizontal direction to form a connection skeleton (3) on the left and right sides of the web (11); S3: Setting a mold; setting a diaphragm mold (4) around the corresponding connection frame (3), and making the diaphragm mold (4) closely attached to the web (11); S4: forming; pouring concrete into the diaphragm mold (4) to form a diaphragm member (7), so that the diaphragm member (7) and the connecting frame (3) together form the diaphragm.

2. A secondary molding process for a diaphragm according to claim 1, characterized in that: The diaphragm mold (4) includes a first enclosure (42) located at the front and rear sides of the connecting frame (3) and parallel to the connecting rod (31), a second enclosure (41) perpendicular to the connecting rod (31) is connected between the two first enclosures (42) by threads, and a plurality of positioning holes corresponding to the plurality of connecting rods (31) are reserved on the second enclosure (41): in step S3, the other end of the connecting rod (31) without a threaded section passes through the corresponding positioning hole, so that after step S4, the plurality of connecting rods (31) are exposed outside the diaphragm component (7).

3. A secondary molding process for a diaphragm according to claim 2, characterized in that: One end of the first enclosure (42) facing the second enclosure (41) is provided with a support plate (46) that fits on the second enclosure (41), and waist-shaped grooves (47) corresponding in position are provided on the support plate (46) and the second enclosure (41). In step S3, after the connecting rod (31) passes through the positioning hole, the threaded fastener is inserted into the waist-shaped groove (47) and is locked by a nut, so that the first enclosure (42) and the second enclosure (41) are threadedly connected.

4. A secondary molding process for a diaphragm according to claim 2, characterized in that: The diaphragm mould (4) is adjusted into position by an adjustment mechanism (5), the adjustment mechanism (5) comprising a base (51) for supporting the diaphragm mould (4), the base (51) being connected to a lifting mechanism, and in step S3, the lifting mechanism drives the base (51) to move up and down to adjust the height of the diaphragm mould (4) into position.

5. A secondary molding process for a diaphragm according to claim 2, characterized in that: The adjustment mechanism (5) further comprises a support assembly, wherein the support assembly comprises two telescopic support rods (54) for preventing the diaphragm mold (4) from falling over, wherein one end of the telescopic support rod (54) is hinged to the base (51), and the other end is hinged to the corresponding first enclosure plate (42). In step S3, the telescopic length of the telescopic support rod (54) itself is adjusted so that the diaphragm mold (4) remains in an upright state.

6. A secondary molding process for a diaphragm according to claim 5, characterized in that: The telescopic support rod (54) comprises a first fixed rod (541) and a first movable rod (542) which are threadedly connected. In step S3, the telescopic length of the telescopic support rod (54) itself is changed by adjusting the thread matching length of the first fixed rod (541) and the first movable rod (542).

7. A secondary molding process for a diaphragm according to claim 1, characterized in that: The diaphragm mold (4) comprises a top plate (44) located at the top of the connecting frame (3); a pressing assembly for pressing the diaphragm mold (4) inwardly is arranged between the wing plate (12) of the T-beam (1) and the top plate (44); the pressing assembly comprises a telescopic pressing rod (6) arranged between the top plate (44) and the wing plate (12) of the T-beam (1); in step S3, the telescopic length of the telescopic pressing rod (6) is adjusted so that the diaphragm mold (4) is closely attached to the web (11) of the T-beam (1) inwardly.

8. A secondary molding process for a diaphragm according to claim 7, characterized in that: The end of the wing plate (12) of the T-shaped beam (1) has a plurality of U-shaped steel bar skeletons (13) spaced front and back and exposed, and the top plate (44) has two supports (65) spaced front and back, and the two supports (65) are connected by a cross bar (66); in step S3, a horizontal bar (64) is inserted into the U-shaped steel bar skeleton (13), and then the two ends of at least one telescopic top pressure rod (6) are respectively hinged on the cross bar (66) and the horizontal bar (64), so as to set the telescopic top pressure rod (6) in place.

9. A secondary molding process for a diaphragm according to claim 7, characterized in that: The telescopic pressing rod (6) comprises a second fixed rod (61) and a second movable rod (62) which are threadedly connected. In step S3, the telescopic length of the telescopic pressing rod (6) itself is changed by adjusting the threaded matching length of the second fixed rod (61) and the second movable rod (62).

10. A secondary molding process for a diaphragm according to claim 4, characterized in that: On the left and right sides of the web (11), the bases (51) of the two adjustment mechanisms (5) are provided with connecting seats (81). In step S3, a pull rod (8) is provided between the two connecting seats (81) to prevent the two adjustment mechanisms (5) from moving away from each other, thereby ensuring that the two diaphragm molds (4) are always in close contact with the two sides of the web (11).

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