Steel strand anchor release safety protection device and pretensioning method prestressed beam production equipment

Abstract

The utility model relates to a kind of steel strand unanchoring safety protection device and pre-tensioning method prestressed beam production equipment, wherein, steel strand unanchoring safety protection device includes baffle, buffer and limiting piece;The both sides of baffle are connected with a buffer, and the end of buffer away from baffle is fixedly arranged on force bearing device, and the middle part of baffle is equipped with first limiting hole, and the end of multiple steel strands is passed through first limiting hole, and is connected with tensioning device, and the part of steel strand between baffle and tensioning device is equipped with limiting piece, and the size of limiting piece is greater than the size of first limiting hole, when steel strand is separated from tensioning device, baffle can block steel strand rebound by the limiting piece of steel strand end portion.The beneficial effect is, the steel strand unanchoring safety protection device of the utility model is simple in structure, easy to operate, effectively prevent steel strand rebound when unanchoring, protect operator safety, improve production efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of prestressed beam production and construction technology, and in particular to a safety protection device for steel strand anchorage detachment and a prestressed beam production device. Background Technology

[0002] Prestressed steel strands are widely used in engineering projects, and they are an indispensable material in the production of prestressed beams. The production of prestressed beams typically involves first laying steel strands on a tensioning platform, then anchoring them to the tensioning pedestals at both ends using anchors. Initial and final tensioning are then performed using tensioning equipment. After tensioning, the reinforcing bars are tied to the steel strands, the molds are assembled, and finally, concrete is poured to form the beam.

[0003] Chinese patent document CN113276271B discloses a pre-tensioned prestressed concrete production facility, including a load-bearing system, a release system, and steel strands. The load-bearing system has steel plate brackets embedded in it to support one end of the steel strands. The release system releases the steel strands by connecting the other end to a pulley system. The load-bearing system includes a pair of pedestals, a concrete floor, steel plate brackets, and steel pads. The pair of pedestals are positioned opposite each other and connected to both sides of the concrete floor. Multiple steel plate brackets are embedded in the pedestals and spaced apart along the width of the pedestals. The arrangement of the steel plate brackets at the tensioning end ensures that the steel strands pass through adjacent steel plate brackets in a staggered manner. A steel pad with multiple circular holes is welded to the outside of the steel plate brackets at the tensioning end. One end of each steel strand passes through these holes and is fixed to the outside of the steel pad by a sleeve-type anchor.

[0004] However, during the production of prestressed beams using the pre-tensioning method, the steel strands are under high tension, and if the anchorages have quality defects or are improperly operated, strand derailment or detachment accidents are highly likely. Existing solutions for safety protection against strand derailment have the following shortcomings: Firstly, methods that improve safety by modifying the anchorage structure often lead to more complex anchorage structures, increasing production costs and hindering the economical production of prestressed beams. Secondly, constructing protective barriers on the construction site is limited by site conditions, is cumbersome to install, and may obstruct normal construction processes, reducing production efficiency. Furthermore, most existing protective devices are designed for specific working conditions, lacking adaptability and failing to meet the needs of different construction environments.

[0005] Therefore, there is an urgent need for a steel strand anchorage safety protection device that is simple in structure, easy to install, has a significant protective effect, and can overcome site limitations, so as to ensure the safety of construction personnel and improve production efficiency during the production of prestressed beams using the pre-tensioning method. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the serious threat to the lives of construction workers posed by strand derailment or misfire accidents during the production of pre-tensioned prestressed beams, and to achieve significant safety protection without disrupting normal construction processes, this paper provides a safety protection device for strand derailment and pre-tensioned prestressed beam production equipment.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0010] In the first aspect, this utility model provides a steel strand anchorage safety protection device, which is installed on a pre-tensioned prestressed beam production equipment. The pre-tensioned prestressed beam production equipment includes a load-bearing device, a tensioning device, and multiple steel strands. The tensioning device is installed on the load-bearing device. The steel strand anchorage safety protection device includes a grid plate, a buffer component, and a limiting component.

[0011] A buffer is connected to both sides of the baffle. The end of the buffer away from the baffle is fixedly mounted on the load-bearing device. A first limiting hole is opened in the middle of the baffle. The ends of multiple steel strands pass through the first limiting hole and are connected to the tensioning device. A limiting device is set on the part of the steel strands located between the baffle and the tensioning device. The size of the limiting device is larger than the size of the first limiting hole. When the steel strands are separated from the tensioning device, the baffle can prevent the steel strands from rebounding through the limiting device at the ends of the steel strands.

[0012] Optionally, the limiting element is a rope clip.

[0013] Optionally, at least two rope clamps are provided at the end of each steel strand.

[0014] Optionally, it may also include a first pull ring and a second pull ring;

[0015] The first pull ring is fixedly installed on the grid plate, and the second pull ring is fixedly installed on the load-bearing device. One end of the buffer is connected to the grid plate through the first pull ring, and the other end of the buffer is connected to the load-bearing device through the second pull ring.

[0016] Optionally, the baffle plate is made of steel plate or carbon fiber plate, and the buffer is made of steel wire rope, spring or damped telescopic rod.

[0017] Secondly, this utility model embodiment provides a prestressed beam production device using the pre-tensioning method, including a load-bearing device, a tensioning device, multiple steel strands, and the aforementioned steel strand anchorage safety protection device.

[0018] Optionally, the load-bearing device includes two tensioning steel supports, and the tensioning device includes a comb plate, multiple steel screws, a first steel nut, and a wire rod connector;

[0019] Two tensioning steel supports are arranged opposite each other. Buffers are installed on the side of the two tensioning steel supports facing away from the steel strands. Comb plates are installed on the side of the two tensioning steel supports facing away from the steel strands. Multiple precision steel screws, corresponding one-to-one with the steel strands, are movably inserted inside the comb plates. After the end of the steel strand passes through the first limiting hole, it is connected to one end of the precision steel screw through a wire rod connector. A limiting device is installed on the part of the steel strand between the grid plate and the wire rod connector. A first precision steel nut is fitted onto the other end of the precision steel screw, and the first precision steel nut abuts against the side of the comb plate away from the tensioning steel supports.

[0020] Optionally, it also includes a limiting plate and multiple second steel nuts;

[0021] Two tensioning steel supports are fixedly equipped with limiting plates on the side away from the comb plate. The limiting plates have a second limiting hole in the middle. Multiple steel screws pass through the second limiting hole and are connected to the steel strands one by one. The part of the steel screw located between the limiting plate and the steel strand is equipped with a second steel nut. The size of the second steel nut is larger than the size of the second limiting hole. When the steel strand is separated from the steel screw, the limiting plate can prevent the steel screw from rebounding through the second steel nut.

[0022] (III) Beneficial Effects

[0023] The beneficial effects of this utility model are as follows: The safety protection device for steel strand detachment in a pre-tensioned prestressed beam production equipment includes a load-bearing device, a tensioning device, and multiple steel strands. The tensioning device is installed on the load-bearing device. The safety protection device for steel strand detachment includes a grid plate, a buffer, and a limiting device. A buffer is connected to both sides of the grid plate. The end of the buffer away from the grid plate is fixedly installed on the load-bearing device. A first limiting hole is opened in the middle of the grid plate. The ends of the multiple steel strands pass through the first limiting hole and are connected to the tensioning device. A limiting device is set on the part of the steel strand located between the grid plate and the tensioning device. The size of the limiting device is larger than the size of the first limiting hole. When the steel strand detaches from the tensioning device, the grid plate can prevent the steel strand from rebounding through the limiting device at the end of the steel strand. Compared to existing protective devices, firstly, the limiting component of this utility model's steel strand de-anchoring safety protection device can be blocked by a baffle plate in the event of a steel strand de-anchoring accident. This allows the steel strand to pull against the baffle plate and transfer the impact force to the buffer component, effectively mitigating the impact force of the steel strand and limiting its flight, preventing injuries. Secondly, this device is installed at the tensioning device, has a simple structure, is easy to install, has no site conditions restrictions, is not constrained by the construction site environment, and has a significant protective effect. Thirdly, as an additional safety guarantee, this device requires no modification to the original pre-tensioned prestressed beam production equipment and construction process, and will not increase production costs or complicate the structure. Fourthly, this device cleverly utilizes the constraint principle between the hole size and the limiting component to achieve the blocking function, without affecting normal tensioning operations. It only functions when the steel strand de-anchors, ensuring construction safety and maintaining the smooth progress of the construction process.

[0024] This utility model discloses a prestressed beam production equipment using the pre-tensioning method, comprising two tensioning steel supports. The tensioning device includes a comb plate, a limiting plate, multiple precision steel screws, a first precision steel nut, a wire rod connector, and a second precision steel nut. A limiting plate is fixedly installed on the side of the two tensioning steel supports away from the comb plate. A second limiting hole is opened in the middle of the limiting plate. After the multiple precision steel screws pass through the second limiting hole, they are connected to the steel strands one by one. The portion of the precision steel screw located between the limiting plate and the steel strand is provided with a second precision steel nut. The size of the second precision steel nut is larger than the size of the second limiting hole. When the steel strand detaches from the precision steel screw, the limiting plate can prevent the precision steel screw from rebounding through the second precision steel nut. In the tensioned state, when an anchorage accident occurs, the second precision steel nut on the precision steel screw will be blocked by the limiting plate, effectively preventing the precision steel screw from ejecting and injuring people, forming a double safety guarantee. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the pre-tensioned prestressed beam production equipment of this utility model.

[0026] Figure 2 for Figure 1 An enlarged schematic diagram of the prestressed beam production equipment at the grid plate;

[0027] Figure 3 This is another three-dimensional schematic diagram of the pre-tensioned prestressed beam production equipment of this utility model;

[0028] Figure 4 for Figure 3 An enlarged schematic diagram of the prestressed beam production equipment at point A in the diagram;

[0029] Figure 5 for Figure 3 An enlarged schematic diagram of the prestressed beam production equipment at point B.

[0030] [Explanation of Labels in the Attached Image]

[0031] 1: Baffle plate; 2: Buffer component; 3: Limiting component; 4: First pull ring; 5: Second pull rod;

[0032] 6: Tensioning steel support; 7: Limiting plate; 8: Precision steel screw; 9: Comb plate; 10: Second precision steel nut; 11: First precision steel nut; 12: Steel strand; 13: Line pole connector. Detailed Implementation

[0033] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," "left," "right," "front," and "rear" are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.

[0034] Example 1:

[0035] Please refer to Figure 1 and Figure 2 This embodiment provides a safety protection device for steel strand anchorage detachment in a pre-tensioned prestressed beam production equipment. The pre-tensioned prestressed beam production equipment includes a load-bearing device, a tensioning device, and multiple steel strands 12. The tensioning device is installed on the load-bearing device. The safety protection device for steel strand anchorage detachment includes a baffle plate 1, a buffer 2, and a limiting device 3.

[0036] A buffer member 2 is connected to both sides of the baffle plate 1. The end of the buffer member 2 away from the baffle plate 1 is fixedly mounted on the load-bearing device. A first limiting hole is provided in the middle of the baffle plate 1. The ends of multiple steel strands 12 pass through the first limiting hole and are connected to the tensioning device. A limiting member 3 is provided on the part of the steel strands 12 located between the baffle plate 1 and the tensioning device. The size of the limiting member 3 is larger than the size of the first limiting hole. When the steel strands 12 are separated from the tensioning device, the baffle plate 1 can prevent the steel strands 12 from rebounding through the limiting member 3 at the end of the steel strands 12. It should be noted that the first limiting hole is a rectangular slit, and the external size of the limiting member 3 is larger than the width of the rectangular slit.

[0037] The limiting component 3 is preferably a rope clamp. The rope clamp is made of high-strength alloy steel, which has sufficient strength and hardness to effectively withstand the impact force generated when the steel strand 12 rebounds. The rope clamp can hold the steel strand 12 tightly, preventing relative displacement. The external dimensions of the rope clamp are larger than the size of the first limiting hole, ensuring that the steel strand 12 can be effectively blocked by the baffle plate 1 when it loses its anchor and rebounds.

[0038] Furthermore, the limiting member 3 can also be other components that can be fixed on the steel strand 12, and its size is larger than the size of the first limiting hole.

[0039] Preferably, each steel strand 12 has at least two rope clamps at its end. The multiple rope clamps increase safety redundancy; even if one rope clamp is damaged or fails, the remaining rope clamps can still provide a blocking effect, thus improving the reliability of the entire protective device.

[0040] Preferably, the steel strand anchorage safety protection device of this embodiment further includes a first pull ring 4 and a second pull ring 5. The first pull ring 4 is fixedly mounted on the grid plate 1, and the second pull ring 5 is fixedly mounted on the load-bearing device. One end of the buffer member 2 is connected to the grid plate 1 through the first pull ring 4, and the other end of the buffer member 2 is connected to the load-bearing device through the second pull ring 5. It should be noted that both the first pull ring 4 and the second pull ring 5 are made of high-strength alloy steel and have sufficient strength to withstand the tensile force transmitted by the buffer member 2.

[0041] Preferably, the baffle plate 1 is a steel plate, carbon fiber plate, or high-strength alloy plate, and the buffer 2 is a steel wire rope, spring, or a damped telescopic rod. Carbon fiber plate is a high-performance composite material made of carbon fiber and a resin matrix (such as epoxy resin). It features high strength, lightweight, corrosion resistance, and an elastic modulus close to that of steel, but with higher tensile strength. Furthermore, carbon fiber plate is rust-resistant and can adapt to harsh environments. High-strength alloy plate is a type of metal plate with high strength characteristics, typically composed of multiple metallic elements. Through specific alloy composition design and heat treatment processes, these alloy plates achieve excellent mechanical properties, such as high strength, good toughness, and wear resistance. A damped telescopic rod combines a telescopic rod with a damper, allowing it to extend and retract freely within a certain range while providing resistance during extension and retraction, making movement smoother and safer. It should be noted that the aforementioned carbon fiber plate, high-strength alloy plate, and damped telescopic rod are all existing devices on the market; this embodiment applies them to the field of building construction.

[0042] The safety protection device for steel strand detachment in this embodiment has the following advantages: First, when a steel strand 12 detaches, the limiting member 3 can be blocked by the baffle plate 1, causing the steel strand 12 to pull on the baffle plate 1 and transfer the impact force to the buffer member 2, effectively mitigating the impact force of the steel strand 12 and limiting its flight, preventing injuries. Second, the device is installed at the tensioning device, has a simple structure, is easy to install, has no site conditions, is not constrained by the construction site environment, and has a significant protective effect. Third, as an additional safety guarantee, the device does not require any changes to the original pre-tensioned prestressed beam production equipment and construction process, and will not increase production costs or complicate the structure. Fourth, the device cleverly utilizes the constraint principle between the hole size and the limiting member 3 to achieve the blocking function, without affecting normal tensioning operations, and only plays a role when the steel strand detaches, thus ensuring construction safety and maintaining the smooth progress of the construction process.

[0043] Example 2:

[0044] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment provides a prestressed beam production equipment using the pre-tensioning method, including a load-bearing device, a tensioning device, multiple steel strands 12, and the steel strand anchorage safety protection device described in Embodiment 1.

[0045] Preferably, the load-bearing device includes two tensioning steel supports 6, and the tensioning device includes a comb plate 9, multiple precision steel screws 8, a first precision steel nut 11, and a wire rod connector 13. The two tensioning steel supports 6 are arranged opposite each other, and a buffer 2 is provided on the side of the two tensioning steel supports 6 facing away from the steel strand 12. A comb plate 9 is provided on the side of the two tensioning steel supports 6 facing away from the steel strand 12. Multiple precision steel screws 8 corresponding one-to-one with the steel strand 12 are movably inserted inside the comb plate 9. After the end of the steel strand 12 passes through the first limiting hole, it is connected to one end of the precision steel screw 8 through the wire rod connector 13. A limiting member 3 is provided on the part of the steel strand 12 located between the grid plate 1 and the wire rod connector 13. The other end of the precision steel screw 8 is fitted with a first precision steel nut 11, and the first precision steel nut 11 abuts against the side of the comb plate 9 away from the tensioning steel supports 6.

[0046] The first steel nut 11 is made of a material that matches the steel screw 8 and has sufficient strength to withstand tensile force. The dimensions of the first steel nut 11 match the threads of the steel screw 8. The first steel nut 11 abuts against the comb plate 9.

[0047] It should be noted that the tensioning table for producing prestressed beams is divided into two ends in the left-right direction, one end being the tensioning end and the other end being the anchoring end. This embodiment is described using the anchoring end as an example. Of course, the steel strand detachment safety protection device of this embodiment also needs to be installed at the tensioning end.

[0048] Preferably, the pole connector 13 is a push-plug type wedge anchor. The push-plug type wedge anchor is one of the most crucial and commonly used end anchoring devices in pre-tensioned prestressed concrete construction, and it is an existing anchor on the market. Of course, the pole connector 13 can also be other existing anchors on the market.

[0049] Preferably, the system also includes a limiting plate 7 and multiple second steel nuts 10. A limiting plate 7 is fixedly installed on the side of the two tensioning steel supports 6 away from the comb plate 9. A second limiting hole is provided in the middle of the limiting plate 7. Multiple steel screws 8 pass through the second limiting hole and are connected to the steel strands 12 one-to-one. A second steel nut 10 is provided on the portion of the steel screw 8 located between the limiting plate 7 and the steel strands 12. The size of the second steel nut 10 is larger than the size of the second limiting hole. When the steel strands 12 detach from the steel screw 8, the limiting plate 7 can prevent the steel screw 8 from rebounding through the second steel nuts 10.

[0050] The second steel nut 10 is made of the same material and specifications as the first steel nut 11, and has sufficient strength to withstand the rebound force. The size of the second steel nut 10 is larger than the size of the second limiting hole, ensuring that when the steel strand 12 disengages from the steel screw 8, the second steel nut 10 can be effectively blocked by the limiting plate 7 to prevent the steel screw 8 from rebounding and causing damage.

[0051] In practical applications, the working process of the prestressed beam production equipment is as follows: First, multiple steel strands 12 are passed through the first limiting holes on the grid plate 1, and limiting components 3 are installed on the steel strands 12. Then, a second steel nut 10 is installed on the steel screw 8, and the steel screw 8 is passed through the second limiting hole on the limiting plate 7. Next, the steel strands 12 and the steel screw 8 are connected through the wire rod connector 13, and the steel screw 8 is passed through the comb plate 9. A first steel nut 11 is installed at the other end of the steel screw 8. Finally, the steel strands 12 are tensioned. After reaching the predetermined tension force, the reinforcing bars are tied, and concrete is poured. After the concrete reaches a certain strength, the tension is released, and the production of the prestressed beam is completed.

[0052] Throughout the production process, the safety protection device for steel strand de-anchoring, the limiting plate 7, and multiple second steel nuts 10 work together to effectively prevent safety accidents caused by the de-anchoring rebound of steel strand 12 and steel screw 8, significantly improving the safety of prestressed beam production.

[0053] The other parts that are the same as in Example 1 will not be repeated here.

[0054] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0056] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A safety protection device for steel strand anchorage detachment, installed on a pre-tensioned prestressed beam production equipment, the pre-tensioned prestressed beam production equipment including a load-bearing device, a tensioning device and multiple steel strands (12), wherein the tensioning device is installed on the load-bearing device, characterized in that: The safety protection device for steel strand anchorage includes a grid plate (1), a buffer (2) and a limiting device (3); A buffer (2) is connected to both sides of the baffle (1). The end of the buffer (2) away from the baffle (1) is fixedly installed on the load-bearing device. A first limiting hole is opened in the middle of the baffle (1). The ends of multiple steel strands (12) pass through the first limiting hole and are connected to the tensioning device. A limiting member (3) is set on the part of the steel strand (12) between the baffle (1) and the tensioning device. The size of the limiting member (3) is larger than the size of the first limiting hole. When the steel strand (12) is separated from the tensioning device, the baffle (1) can prevent the steel strand (12) from rebounding through the limiting member (3) at the end of the steel strand (12).

2. The safety protection device for steel strand anchorage detachment as described in claim 1, characterized in that: The limiting component (3) is a rope clip.

3. The safety protection device for steel strand anchorage detachment as described in claim 2, characterized in that: At least two rope clamps are provided at the end of each steel strand (12).

4. The safety protection device for steel strand anchorage detachment as described in claim 1, characterized in that: It also includes a first pull ring (4) and a second pull ring (5); The first pull ring (4) is fixedly installed on the baffle plate (1), and the second pull ring (5) is fixedly installed on the load-bearing device. One end of the buffer (2) is connected to the baffle plate (1) through the first pull ring (4), and the other end of the buffer (2) is connected to the load-bearing device through the second pull ring (5).

5. The safety protection device for steel strand anchorage detachment as described in claim 1, characterized in that: The baffle (1) is a steel plate or carbon fiber plate, and the buffer (2) is a steel wire rope, spring or a damped telescopic rod.

6. A prestressed beam production equipment using the pre-tensioning method, characterized in that: It includes a load-bearing device, a tensioning device, multiple steel strands (12), and a steel strand anchorage safety protection device as described in any one of claims 1-5.

7. The prestressed beam production equipment as described in claim 6, characterized in that: The load-bearing device includes two tensioning steel supports (6), and the tensioning device includes a comb plate (9), multiple steel screws (8), a first steel nut (11) and a rod connector (13). Two tensioning steel supports (6) are arranged opposite each other. A buffer (2) is provided on the side of the two tensioning steel supports (6) facing away from the steel strand (12). A comb plate (9) is provided on the side of the two tensioning steel supports (6) facing away from the steel strand (12). Multiple fine steel screws (8) corresponding to the steel strand (12) are movably inserted inside the comb plate (9). After the end of the steel strand (12) passes through the first limiting hole, it is connected to one end of the fine steel screw (8) through the wire rod connector (13). A limiting member (3) is provided on the part of the steel strand (12) between the grid plate (1) and the wire rod connector (13). A first fine steel nut (11) is sleeved on the other end of the fine steel screw (8). The first fine steel nut (11) abuts against the side of the comb plate (9) away from the tensioning steel support (6).

8. The prestressed beam production equipment as described in claim 7, characterized in that: It also includes a limiting plate (7) and multiple second steel nuts (10); Two tensioning steel supports (6) are fixedly installed on the side away from the comb plate (9) with a limiting plate (7). The limiting plate (7) has a second limiting hole in the middle. Multiple steel screws (8) pass through the second limiting hole and are connected to the steel strands (12) one by one. The part of the steel screw (8) located between the limiting plate (7) and the steel strands (12) is provided with a second steel nut (10). The size of the second steel nut (10) is larger than the size of the second limiting hole. When the steel strands (12) are separated from the steel screws (8), the limiting plate (7) can prevent the steel screws (8) from rebounding through the second steel nut (10).

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