Nomadic production method and special equipment based on pre-tensioning method for precast prestressed beam

Abstract

The application discloses a nomadic production method based on pre-tensioning method prefabricated prestressed beam and special equipment thereof, and comprises the following steps: according to the construction scheme, a prefabricated prestressed beam production area is planned in advance near the construction site, and a line is laid to determine the installation direction of the production special equipment; the production special equipment is transported to the predetermined production area, the mold frame standard section in the special equipment is arranged and combined according to the line laying direction and the length specification of the prefabricated prestressed beam, and is assembled into a long line module. One of the purposes of the application is to provide a nomadic production method based on pre-tensioning method prefabricated prestressed beam, through the arrangement and combination of the mold frame standard section, the production method can be applied to various mainstream prefabricated prestressed beams of different sizes, and flexible production is realized; meanwhile, the installation of the arrangement and combination can realize nomadic production, thereby reducing the transportation cost and production cost in the construction process; another purpose of the application is to provide special equipment based on the aforementioned nomadic production method.

Description

Technical Field

[0001] This invention relates to the technical field of prefabricated buildings, and more specifically, to a nomadic production method and dedicated equipment for prestressed beams based on the pre-tensioning method. Background Technology

[0002] Prestressed beams are widely used in building, municipal, and bridge engineering, but mainly post-tensioned beams, with pre-tensioned prestressed beams having a smaller application range, especially in prefabricated buildings. Pre-tensioned precast prestressed beams, however, have large spans and are unsupported, with prestressing tendons having much greater strength than ordinary steel bars. Compared to cast-in-place reinforced concrete beams, they save significant construction measures and building materials. Furthermore, they do not require anchorages, saving material costs compared to post-tensioned prestressed beams. The absence of on-site tensioning and release also saves construction time and improves construction efficiency.

[0003] However, most prefabrication plants now use fixed tensioning pedestals to produce prestressed beams using the pre-tensioning method. Due to the limitations of economic transportation distance, it is difficult to cover a large area of ​​the construction market, which is quite restrictive. This production method requires a large initial investment and does not make full use of the inherent strength of the prefabricated beam mold material, resulting in significant waste. Furthermore, the molds used in this production method are mostly of a fixed shape, which cannot enable flexible production and requires a high degree of standardization in the early design of buildings. Summary of the Invention

[0004] One objective of this invention is to provide a nomadic production method for prestressed beams based on the pre-tensioning method. By arranging and combining standard sections of the mold frame, this production method is applicable to various mainstream prestressed beam sizes, achieving flexible production and reducing costs in the production process such as mold making. Simultaneously, the arrangement and combination installation method allows the production of prestressed beams to move with the construction project, achieving nomadic production and thus reducing transportation costs and production costs during construction. Another objective of this invention is to improve a dedicated device based on the aforementioned nomadic production method, aiming to solve the technical problems described in the background art.

[0005] To achieve the above objectives, the present invention first discloses a technical solution:

[0006] A nomadic production method for prestressed beams based on the pre-tensioning method is characterized by the following key steps:

[0007] S1: Based on the construction plan, pre-plan the precast prestressed beam production area near the construction site, and lay out the lines to determine the installation location of the special production equipment;

[0008] S2: Transport the special production equipment to the designated production area, arrange and combine the standard sections of the mold frame in the special equipment according to the laying direction and the size specifications of the precast prestressed beam, and assemble them into a long line module;

[0009] S3: The first and last standard sections of the formwork frame are used as tensioning sections and anchoring sections, respectively. Prestressing tensioning devices from special equipment are arranged at the tensioning sections, and prestressing tendon traction devices from special equipment are arranged at the anchoring sections.

[0010] S4: Adjust the side molds and bottom molds of all standard sections of the precast prestressed beam according to their dimensions and specifications;

[0011] S5: Install the first clamping plate at the end of the tensioning section and the second clamping plate at the end of the anchoring section;

[0012] S6: The beam reinforcement is inserted into the long line module one by one using the prestressed tendon traction device to complete the reinforcement layout. According to the adjusted size, the predetermined production length of the prestressed beam and the production quantity of the prestressed beam, the end templates are arranged in the long line module. Two adjacent end templates form the production cavity of the corresponding prestressed beam in the long line module.

[0013] S7: Anchor one end of the prestressed tendon with anchors and tension the other end of the prestressed tendon with a prestressing tensioning device. After the target prestress is reached, the prestress is limited by fasteners.

[0014] S8: After all prestressing tendons have been tensioned, begin pouring the predetermined volume of concrete into the production mold cavity;

[0015] S9: Curing of prefabricated components including leveling, polishing, roughening, and finishing;

[0016] S10: Production ends, special equipment is dismantled, and loaded onto trucks for transport to the next production area;

[0017] S11: Repeat steps S1-S10.

[0018] Furthermore, when assembling the standard section of the mold frame in step S2, a single-piece, single-layer multi-piece, or multi-layer stacking method can be adopted.

[0019] Furthermore, in step S9, the surface is initially smoothed and compacted using an aluminum alloy scraper. Any areas with grout leakage are cleaned promptly during leveling to reduce the difficulty of demolding later. The concrete finishing or roughening operation is performed for the first time after the concrete has initially set. After initial setting, the finishing or roughening operation is performed using a steel trowel or steel brush. The finishing or roughening operation starts from one side and proceeds backwards. After the concrete has fully set, the surface of the component is finished for a second finishing operation, with the same operation sequence as the first finishing. The roughening operation is performed only once after the concrete has initially set.

[0020] Based on the aforementioned nomadic production method, this invention also discloses a special equipment, the key of which is: including a prestressed tensioning device and a prestressed tendon traction device arranged opposite each other in the X direction, with n standard mold frame sections arranged between them, and the n standard mold frame sections connected end to end along the X direction to form a long module; wherein: the first standard mold frame section serves as a tensioning section, and a first clamping plate is connected to the end of the tensioning section, and fasteners for limiting the prestress of the prestressed tendons after tensioning are provided on the tendon-passing gap of the first clamping plate; the nth standard mold frame section serves as an anchoring section, and a second clamping plate is connected to the end of the anchoring section, and anchors for limiting the position of the prestressed tendons during tensioning are provided on the tendon-passing gap of the second clamping plate; m end templates are also provided in the long module, and the reserved space between the mth end template and the (m-1)th end template serves as the production cavity for the corresponding prestressed beam; n, m ≥ 2, and n, m are positive integers.

[0021] Furthermore, the standard section of the mold frame includes a bottom mold, and two side molds are erected on both sides of the bottom mold in the Y direction. Both side molds adopt a hollow structure with closed ends. The hollow structure cavity is provided with steel components that can bear and transmit horizontal pressure, and the distance between the two is adjustable. The size of the end mold plate is adapted to the distance between the two side molds.

[0022] Furthermore, an upper pull rod is installed between the two side molds, with one end of the upper pull rod hinged to one of the side molds and the other end detachably connected to the other side mold.

[0023] Furthermore, a guide rail is arranged along the Y direction on the bottom mold, and at least one of the side molds is slidably connected to the guide rail by a sliding member. A limiting member for limiting the sliding position is also provided between the sliding member and the guide rail.

[0024] Furthermore, at least one of the two side molds is a rotatable side mold to enable the opening and closing of the production cavity.

[0025] Furthermore, the bottom mold includes two bottom frames arranged opposite each other in the Y direction, which are connected by a spiral telescopic mechanism, and a rotatable side mold is hinged to the outside of each bottom frame by a hinge seat. A fixed-size bottom plate is also selectively provided on the bottom frame.

[0026] Furthermore, the prestressing tensioning device includes a three-dimensional tensioning installation platform capable of moving in the X, Y, and Z directions. A tensioning seat is installed on the three-dimensional tensioning installation platform via a hydraulic jack arranged in the X direction. The tensioning seat is connected to a prestressing tendon connector via a tensioning rod extending in the X direction. The prestressing tendon traction device includes a three-dimensional traction installation platform capable of moving in the X, Y, and Z directions. An upper traction structure and a lower traction structure are assembled on the traction three-dimensional platform via a spacing adjustment mechanism arranged in the Z direction. The reserved gap between the two serves as a traction channel for traction of the prestressing tendon along the X direction.

[0027] Compared with the prior art, the significant advantages of the present invention are:

[0028] The production method of the present invention enables nomadic and flexible production of prestressed beams using the pre-tensioning method, improves the functionality and flexibility of precast beam molds, and allows the production of precast beams to move with the construction project, reducing transportation costs during the construction process and lowering the one-time investment costs for manufacturers.

[0029] By arranging and combining standard sections of the mold frame, this production method can be applied to precast prestressed beams of various sizes or the same size, achieving flexible production and reducing costs in the production process such as mold making.

[0030] Before construction begins, a prefabrication site can be planned near the project site to assemble equipment for production. This not only reduces the transportation distance of components but also reduces the intensity of manual labor and improves construction efficiency.

[0031] By adjusting the side and bottom mold patterns, the standard section of a single mold frame can be used to produce various mainstream precast prestressed beams of different sizes. This significantly improves the equipment's versatility, helps to greatly reduce mold opening costs, and further demonstrates the advantages of flexible production.

[0032] Based on the modular concept, it breaks through the previous equipment's ability to produce only a single beam or a single layer of beams, enabling it to adopt parallel, stacked, and other forms to adapt to various site requirements.

[0033] The addition of prestressing tensioning devices and prestressing tendon traction devices improves ease of use, allowing workers to quickly and accurately place and tension the tendons, shortening the production cycle of precast prestressed beams, and thus improving production efficiency. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0035] Figure 1 The process flow diagram of the nomadic production method in Example 1;

[0036] Figure 2 This is a top view of the overall structure of the special production equipment in Example 1;

[0037] Figure 3 This is a top view of the segmented structure of the long-line module in Example 1;

[0038] Figure 4 This is a top view of the standard section of the module frame in Example 1;

[0039] Figure 5 This is a left view (a) of the standard section of the mold frame in the adjusted state in Embodiment 1.

[0040] Figure 6 This is a left-side schematic diagram (II) of the standard section of the mold frame in the adjusted state in Embodiment 1.

[0041] Figure 7 This is a left-side view (III) of the standard section of the mold frame in the adjusted state in Example 1.

[0042] Figure 8 This is a left-side view (fourth) of the standard section of the module frame in the adjusted state in Example 1;

[0043] Figure 9 This is a left-side schematic diagram of the prestressing tensioning device in Example 1;

[0044] Figure 10 This is a front view schematic diagram of the prestressed tendon traction device in Example 1;

[0045] Figure 11 This is a left-side view (I) of the standard section of the mold frame in the adjusted state in Example 2;

[0046] The diagram is labeled as follows: 1-Prestressing tensioning device, 2-Prestressing tendon traction device, 3-Standard section of formwork frame, 4-End template, 6-First clamping plate, 7-Fastener, 8-Second clamping plate, 9-Anchor, 10-Long line module, 301-Bottom formwork, 302-Side formwork, 303-Upper tie rod, 304-Guide rail, 305-Limiting component, 306-Bottom frame, 307-Spiral telescopic mechanism, 308-Fixed-size base plate, 309-Fixed-size block, 310-Hinge seat, 101-Tensioning three-dimensional installation platform, 102-Hydraulic jack, 103-Tensioning seat, 104- Tensioning rod, 105-Prestressed tendon connector, 106-X-direction slide rail, 107-Y-direction slide rail, 108-Z-direction lifting platform, 109-Support seat, 110-Mounting rod, 111-Nut, 201-Torture three-dimensional installation platform, 202-Spacing adjustment mechanism, 203-Upper traction structure, 204-Lower traction structure, 205-Z-direction slide rail, 206-Handwheel, 207-Double threaded screw, 208-Upper sliding seat, 209-Lower sliding seat, 210-Upper traction belt, 211-Upper mounting plate, 212-Lower traction belt, 213-Lower mounting plate. Detailed Implementation

[0047] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0048] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] Figure 1 The first embodiment of the present invention is shown: a nomadic production method for prestressed beams based on the pre-tensioning method, comprising the following steps:

[0050] S1: Based on the construction plan, pre-plan the precast prestressed beam production area near the construction site, and lay out the lines to determine the installation location of the special production equipment;

[0051] S2: Transport the special production equipment to the designated production area, arrange and combine the standard sections 3 of the mold frame in the special equipment according to the laying direction and the size specifications of the precast prestressed beam, and assemble them into a long line module 10.

[0052] S3: The first and last standard sections 3 of the formwork frame are respectively used as tensioning sections and anchoring sections, and the prestressing tensioning device 1 of the special equipment is arranged at the tensioning section, and the prestressing tendon traction device 2 of the special equipment is arranged at the anchoring section.

[0053] S4: Adjust the side molds 302 and bottom molds 301 of all standard sections 3 of the precast prestressed beams in a unified manner according to their size specifications;

[0054] S5: Install the first clamping plate 6 at the end of the tensioning section and the second clamping plate 8 at the end of the anchoring section;

[0055] S6: The prestressed tendon traction device 2 is used to insert the beam tendons one by one into the long line module 10 to complete the reinforcement arrangement. According to the adjusted size, the predetermined production length of the prestressed beam and the production quantity of the prestressed beam, the end template 4 is arranged in the long line module 10. Two adjacent end templates 4 form the production cavity of the corresponding prestressed beam in the long line module 10.

[0056] S7: Anchor one end of the prestressed tendon with anchor 9 and tension the other end of the prestressed tendon with prestressing tensioning device 1. After the target prestress is reached, the prestress is limited by fastener 7.

[0057] S8: After all prestressing tendons have been tensioned, begin pouring the predetermined volume of concrete into the production mold cavity;

[0058] S9: Curing of prefabricated components including leveling, polishing, roughening, and finishing;

[0059] S10: Production ends, special equipment is dismantled, and loaded onto trucks for transport to the next production area;

[0060] S11: Repeat steps S1-S10.

[0061] In this embodiment, when assembling the standard section of the formwork frame in step S2, single-piece, single-layer multi-piece, and multi-layer stacking methods can be adopted. In step S9, the surface is initially smoothed and compacted with an aluminum alloy scraper. Leaking grout areas are cleaned in time during leveling to reduce the difficulty of demolding later. The concrete troweling or roughening operation is carried out for the first time after the concrete has initially set. After the initial setting, the troweling or roughening operation is carried out with tools such as steel trowels or steel brushes. The troweling or roughening operation starts from one side and works backward from front to back. After the final setting of the concrete is completed, the surface of the component is troweled a second time, and the operation sequence is the same as the first troweling. The roughening operation is only carried out once after the initial setting of the concrete.

[0062] Please see Figures 2 to 4Based on the foregoing description, this embodiment also discloses a nomadic production method and dedicated equipment for prestressed beams based on the pre-tensioning method, including a prestressing tensioning device 1 and a prestressing tendon traction device 2 arranged opposite each other in the X direction, with n standard template sections 3 arranged between them, and the n standard template sections 3 connected end to end along the X direction to form a long module 10; wherein: the first standard template section 3 serves as a tensioning section, and a first clamping plate 6 is connected to the end of the tensioning section, and the first clamping plate 6 is provided with a spacer for the tendon through which it passes. Fasteners 7 are used to limit the prestress of the prestressed tendons after tensioning; the nth standard section 3 of the mold frame serves as an anchoring section, and a second clamping plate 8 is connected to the end of the anchoring section. Anchors 9 for limiting the position of the prestressed tendons during tensioning are provided on the through-tendon gap of the second clamping plate 8; m end templates 4 are also provided in the long line module 10, and the reserved space between the mth end template 4 and the (m-1)th end template 4 serves as the production mold cavity for the corresponding prestressed beam; n and m ≥ 2, and n and m are positive integers.

[0063] like Figure 4 As shown, in a specific implementation, the standard section 3 of the mold frame includes a bottom mold 301, and two side molds 302 are erected on both sides of the bottom mold 301 in the Y direction. Both side molds 302 adopt a hollow structure with closed ends. The hollow structure cavity is equipped with steel components that can bear and transmit horizontal pressure, and the distance between them is adjustable. The size of the end template 4 is adapted to the distance between the two side molds 302. In this embodiment, during the tensioning process, the first clamping plate 6 and the second clamping plate 8 are used to transmit prestress to the two side molds 302. At the same time, the sealing plates at both ends of the side molds 302 can increase the force transmission area between two adjacent standard sections 3 of the mold frame. It should be noted that the structure of the first clamping plate 6 and the second clamping plate 8 is the same, that is, they both adopt a double clamping plate structure, including an upper clamping plate body and a lower clamping plate body. The reserved gap between them serves as the through-rib gap, and the reserved gap between them is adjustable (not shown in the figure). It is understood that the production quantity of precast prestressed beams can be adjusted by changing the number of end templates 4, and the length parameters of the precast prestressed beams can be adjusted by changing the distance between two adjacent end templates 4. Therefore, multiple precast prestressed beams of the same or different lengths can be produced at once using this special equipment. Optionally, at least one partition mold (not shown in the figure) extending in the X direction can be set on the bottom mold 301 between the two side molds 302, so that more production cavities can be divided in the long line module 10 using both the partition mold and the end mold 4 plates, thereby enabling this special equipment to produce more precast prestressed beams of the same or different sizes in the same batch.

[0064] from Figures 2 to 4As can be seen, in order to improve the structural strength of the standard section 3 of the mold frame and to facilitate the demolding of the precast prestressed beam, an upper tie rod 303 is installed between the two side molds 302. One end of the upper tie rod 303 is hinged to one of the side molds 302, and the other end is detachably connected to the other side mold 302.

[0065] Please see Figures 5 to 8 Specifically, a guide rail 304 is arranged along the Y direction on the bottom mold 301, and at least one side mold 302 is slidably connected to the guide rail 304 via a sliding member. A limiting member 305 for limiting the sliding position is also provided between the sliding member and the guide rail 304. In this embodiment, one of the side molds 302 is a fixed side mold 302a fixedly connected to the bottom mold 301, and the other is a movable side mold 302b slidably connected to the guide rail 304 via a sliding member. Moving the movable side mold 302b can adjust the distance between the fixed side mold 302a and the movable side mold 302b. After adjustment, installing the end template 4 of a predetermined size can form the production mold cavity (the size adjustment method is referred to in section 5). Figure 8 The production mold cavity volume can be freely varied according to requirements, offering high flexibility and versatility. Preferably, to prevent aggregate from flowing into the gap between the movable side mold 302b and the bottom mold 301, a fixed-size block 309 (see reference) can be provided on the bottom mold 301 according to the distance between the fixed side mold 302a and the movable side mold 302b. Figure 8 ).

[0066] like Figure 2 and Figure 9 As shown, in a specific implementation, the prestressed tensioning device 1 includes a three-dimensional tensioning installation platform 101 that can move in the X, Y, and Z directions. A tensioning seat 103 is provided on the three-dimensional tensioning installation platform 101 via hydraulic jacks 102 arranged in the X direction. The tensioning seat 103 is connected to a prestressed tendon connector 105 via a tensioning rod 104 extending in the X direction. Preferably, the three-dimensional tensioning platform includes a Y-direction slide rail 107, an X-direction slide rail 106 that can move along the Y-direction slide rail 107, and a Z-direction lifting platform 108 that can move along the X-direction slide rail 106. A support seat 109 is provided on the Z-direction lifting platform 108, and an installation rod 110 is hinged to the support seat 109. The hydraulic jacks 102 adopt a through-type jack structure, with one end locked to the installation rod 110 by a nut 111, and the other end abutting against the tensioning seat 103. Preferably, two mounting rods 110 are provided, and two hydraulic jacks 102 are also provided symmetrically, with the mounting rods 110 symmetrically distributed on both sides of the tension rod 104.

[0067] from Figure 2 and Figure 10As can be seen, the prestressed tendon traction device 2 includes a traction three-dimensional installation platform 201 capable of moving in the X, Y, and Z directions. An upper traction structure 203 and a lower traction structure 204 are mounted on the traction three-dimensional platform via a spacing adjustment mechanism 202 arranged in the Z direction. The reserved gap between them serves as a traction channel for traction of the prestressed tendons along the X direction. In this embodiment, the structure of the traction three-dimensional installation platform 201 is similar to that of the tensioning three-dimensional traction platform, and will not be repeated here. The spacing adjustment mechanism 202 includes a Z-axis guide rail 205, in which a double-threaded screw 207 driven by a handwheel 206 is disposed. An upper sliding seat 208 and a lower sliding seat 209 are slidably connected on the Z-axis guide rail 205 corresponding to the positive and negative threads of the double-threaded screw 207, respectively. The upper traction structure 203 includes an upper traction belt 210, which is mounted on the upper sliding seat 208 via an upper mounting plate 211. The lower traction structure 204 includes a lower traction belt 212, which is mounted on the lower sliding seat 209 via a lower mounting plate 213. The spacing between the upper and lower mounting belts can be adjusted by rotating the handwheel 206 to ensure effective traction of the prestressing tendons, thereby enabling rapid reinforcement placement in the production mold cavity and significantly improving construction efficiency.

[0068] Figure 11 The second embodiment of the present invention is shown. Compared with the first embodiment, at least one of the two side molds 302 is a rotatable side mold 302c to realize the opening and closing of the production mold cavity.

[0069] In a specific implementation, the bottom mold 301 includes two bottom frames 306 arranged opposite each other in the Y direction, connected by a spiral telescopic mechanism 307. A rotatable side mold 302c is hinged to the outer side of each bottom frame 306 via a hinge seat 310. A fixed-size base plate 308 is selectively provided on each bottom frame 306. In this embodiment, the distance between the two bottom frames 306 can be adjusted by adjusting the length of the spiral telescopic mechanism 307. After the bottom frames 306 are adjusted, a base plate with a suitable distance can be inserted to adjust the width of the production mold cavity. When demolding is required, simply release the pull rod and rotate the side mold 302 outwards for quick demolding. Therefore, this embodiment facilitates demolding operations while allowing for adjustment of the production mold cavity size, resulting in better performance.

[0070] In summary, the production method of this invention enables nomadic and flexible production of prestressed beams using the pre-tensioning method, improving the functionality and flexibility of prestressed beam molds. This allows prestressed beam production to move with the construction project, reducing transportation costs during construction and lowering the initial investment for manufacturers. Through the arrangement and combination of the standard mold frame sections 3, this production method is applicable to various sizes of prestressed beams, both different and the same, achieving flexible production and reducing costs associated with mold making and other production processes. Before construction begins, a prefabrication site can be planned near the project site for equipment assembly and production, reducing component transportation distances, lowering labor intensity, and improving construction efficiency. High efficiency; by adjusting the side mold 302 and bottom mold 301, the standard section 3 of a single mold frame can be used to produce various mainstream precast prestressed beams of different sizes, significantly improving the equipment's versatility and reducing mold opening costs, further demonstrating the advantages of flexible production; based on the modular concept, it breaks through the previous production form of only single beams or single-layer beams, allowing it to be used in parallel, stacked, and other forms to adapt to various site requirements, further demonstrating the advantages of flexible production; equipped with a prestressing tensioning device 1 and a prestressing tendon traction device 2, it improves ease of use, facilitating workers to quickly and accurately place and tension the tendons, shortening the production cycle of precast prestressed beams, thereby improving production efficiency.

[0071] Finally, it should be noted that the technical solutions disclosed above are only a preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art can understand that implementing all or part of the processes of the above embodiments and making equivalent changes in accordance with the claims of the present invention still fall within the scope of the invention.

Claims

1. A nomadic production method for prestressed beams based on the pre-tensioning method, characterized in that... Includes the following steps: S1: Based on the construction plan, pre-plan the precast prestressed beam production area near the construction site, and lay out the lines to determine the installation location of the special production equipment; S2: Transport the special production equipment to the designated production area, arrange and combine the standard sections of the mold frame in the special equipment according to the laying direction and the size specifications of the precast prestressed beam, and assemble them into a long line module; S3: The first and last standard sections of the formwork frame are used as tensioning sections and anchoring sections, respectively. Prestressing tensioning devices from special equipment are arranged at the tensioning sections, and prestressing tendon traction devices from special equipment are arranged at the anchoring sections. S4: Adjust the side molds and bottom molds of all standard sections of the precast prestressed beam according to their dimensions and specifications; S5: Install the first clamping plate at the end of the tensioning section and the second clamping plate at the end of the anchoring section; S6: The beam reinforcement is inserted into the long line module one by one using the prestressed tendon traction device to complete the reinforcement layout. According to the adjusted size, the predetermined production length of the prestressed beam and the production quantity of the prestressed beam, the end templates are arranged in the long line module. Two adjacent end templates form the production cavity of the corresponding prestressed beam in the long line module. S7: Anchor one end of the prestressed tendon with anchors and tension the other end of the prestressed tendon with a prestressing tensioning device. After the target prestress is reached, the prestress is limited by fasteners. S8: After all prestressing tendons have been tensioned, begin pouring the predetermined volume of concrete into the production mold cavity; S9: Curing of prefabricated components including leveling, polishing, roughening, and finishing; S10: Production ends, special equipment is dismantled, and loaded onto trucks for transport to the next production area; S11: Repeat steps S1-S10.

2. The nomadic production method for prestressed beams based on the pre-tensioning method according to claim 1, characterized in that: When assembling the standard section of the mold frame in step S2, single-section, single-layer multi-section, and multi-layer stacking methods can be used.

3. The nomadic production method for prestressed beams based on the pre-tensioning method according to claim 1 or 2, characterized in that: In step S9, the surface is initially smoothed and compacted using an aluminum alloy scraper. Any areas with grout leakage are cleaned promptly during leveling to reduce the difficulty of demolding later. The concrete finishing or roughening operation is performed for the first time after the concrete has initially set. After initial setting, the finishing or roughening operation is performed using a steel trowel or steel brush. The finishing or roughening operation starts from one side and proceeds backwards. After the concrete has fully set, the surface of the component is finished for a second finishing operation, following the same sequence as the first finishing operation. The roughening operation is performed only once after the concrete has initially set.

4. A special device for use in any one of the nomadic production methods described in claims 1-3, characterized in that: The system includes a prestressing tensioning device and a prestressing tendon traction device arranged opposite each other in the X direction. Between these two devices are n standard template sections, which are connected end-to-end along the X direction to form a long module. Specifically: the first standard template section serves as a tensioning section, with a first clamping plate connected to its end. Fasteners for limiting the prestress of the prestressing tendons after tensioning are provided on the tendon-passing gaps of the first clamping plate. The nth standard template section serves as an anchoring section, with a second clamping plate connected to its end. Anchors for limiting the position of the prestressing tendons during tensioning are provided on the tendon-passing gaps of the second clamping plate. The long module also includes m end templates, with the reserved space between the m-th and (m-1)-th end templates serving as the production cavity for the corresponding prestressed beam. n and m ≥ 2, and n and m are positive integers.

5. The special equipment according to claim 4, characterized in that: The standard section of the mold frame includes a bottom mold, and two side molds are erected on both sides of the bottom mold in the Y direction. Both side molds adopt a hollow structure with closed ends. The hollow structure cavity is equipped with steel components that can bear and transmit horizontal pressure, and the distance between the two is adjustable. The size of the end mold is adapted to the distance between the two side molds.

6. The special equipment according to claim 5, characterized in that: An upper pull rod is also installed between the two side molds. One end of the upper pull rod is hinged to one of the side molds, and the other end is detachably connected to the other side mold.

7. The special equipment according to claim 6, characterized in that: The bottom mold is provided with a guide rail along the Y direction, and at least one of the side molds is slidably connected to the guide rail by a sliding member. A limiting member for limiting the sliding position is also provided between the sliding member and the guide rail.

8. The special equipment according to claim 7, characterized in that: At least one of the two side molds is a rotatable side mold to enable the opening and closing of the production mold cavity.

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