Cutting device for prestressed steel strand production

Abstract

The invention relates to the technical field of wire cutting, in particular to a cutting device for prestressed steel strand production. Comprising a bottom frame which is in sliding connection with a movable frame; the motor is mounted on the moving frame, and an output shaft of the motor is fixedly connected with a saw blade; the mounting frame is fixedly connected to the bottom frame, the mounting frame is provided with supporting frames which are arranged at intervals, the supporting frames are fixedly connected with fixing belts, the fixing belts are used for hooping the steel strands so as to ensure the stability of the steel strands in the cutting process, and the supporting frames are slidably connected with L-shaped plates. According to the steel strand cutting device, the steel strand is tightly hooped through the folded fixing belts, so that in the cutting process of the steel strand, external force exists to overcome the force which interferes with the normal shape of the steel strand and is brought by cutting of a high-speed rotating saw blade, the cutting area of the steel strand is prevented from being scattered, the cutting quality is improved, and the danger caused by jumping of the steel strand is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of wire cutting, and in particular to a cutting device for producing prestressed steel strands. Background Art

[0002] Prestressed steel strand is a high-strength steel product made of multiple steel wires twisted together. It is usually used as prestressed tendons in concrete structures. Prestressed steel strand has the characteristics of high strength, high elastic modulus, and low relaxation rate. Prestressed steel strand can utilize the above characteristics to improve the overall stiffness and crack resistance of the structure, increase the safety and durability of the structure. In actual engineering projects, prestressed steel strand needs to be cut into specific lengths according to design requirements so that it can be installed in different locations and prestressed.

[0003] When the existing prestressed steel strand cutting device is in use, it usually only performs a single cut on the prestressed steel strand without any specific "fixing". As a result, the prestressed steel strand cannot withstand the vibration caused by the force transmitted by the high-speed rotating saw blade during the cutting process. The multiple steel wires twisted in this way will spread out, destroying the proper bonding force of the prestressed steel strand cutting area, thereby reducing the mechanical properties of the prestressed steel strand itself and affecting the overall stability and durability of the structure. Summary of the invention

[0004] In order to overcome the shortcomings mentioned in the above technical background, the present invention provides a cutting device for the production of prestressed steel strands.

[0005] The technical implementation scheme of the present invention is: a cutting device for the production of prestressed steel strands, comprising: a base frame, the base frame is slidably connected to a movable frame; a motor is installed on the movable frame, and the output shaft of the motor is fixedly connected to a saw blade; a mounting frame is fixedly connected to the base frame, the mounting frame is provided with support frames arranged at intervals, the support frames are fixedly connected to fixing belts, the fixing belts are used to tighten the steel strands to ensure the stability of the steel strands during the cutting process, the support frame is slidably connected to an L-shaped plate, and the L-shaped plate is fixedly connected to adjacent ends of adjacent fixing belts; a power mechanism is arranged on a side of the base frame away from the mounting frame, and is used to make the base frame and the movable frame slide relative to each other; two limiting mechanisms are arranged at intervals, both of which are arranged on the base frame, and are used to position the steel strands.

[0006] It is further explained that the rotation direction of the saw blade is the same as the rotation direction of the steel strand, which is used to reduce the degree of unraveling of the steel strand.

[0007] It is further explained that the support frames arranged at intervals are distributed in a centrally symmetrical manner, and are used to apply torsional pressure in the same direction to the steel strands in adjacent areas.

[0008] Further description, the power mechanism includes: a hydraulic push rod installed on a side of the base frame away from the mounting frame, the telescopic end of the hydraulic push rod being fixedly connected to the mobile frame; two sliding rods arranged at intervals and respectively slidably connected to adjacent support frames, a connecting rod being rotatably connected between the sliding rod and the mobile frame, and a first elastic element being fixedly connected between the sliding rod and the adjacent L-shaped plate.

[0009] Further description, the limiting mechanism includes: a plurality of electric roller groups arranged at intervals and all installed on the base frame, a soft material is provided on the outer side of the electric roller group, the base frame is fixedly connected with guide shells arranged at intervals for guiding the steel strands; a centering assembly is provided on the adjacent support frame for centering the steel strands.

[0010] Further description, the centering assembly includes: a fixed ring, fixedly connected to the adjacent support frame, the fixed ring is slidably connected with centering pieces arranged at intervals, the centering pieces are slidably connected with a first limiting rod, and a second elastic element is fixedly connected between the first limiting rod and the fixed ring; a transmission structure is arranged on the movable frame, and is used to make the fixed ring and the centering piece slide relative to each other.

[0011] It is further explained that the opposite sides of the centering piece on the same fixing ring are provided with a soft layer for preventing scratches when centering the steel strand.

[0012] Further description, the transmission structure includes: a rack fixedly connected to the movable frame, the fixed ring is rotatably connected to a gear, the gear is meshed with the rack, the gear is provided with first limit grooves arranged at intervals, the first limit grooves are inclined grooves, which are used to limit the adjacent first limit rods.

[0013] Further description, it also includes: two tensioning mechanisms, which are arranged at intervals and are both provided on the mounting frame, for tightening the steel strands, the tensioning mechanism includes: a limiting member, slidably connected to the mounting frame, the mounting frame is slidably connected to the supporting frame, the limiting member is provided with a second limiting groove, and a third elastic element is fixedly connected between the limiting member and the adjacent supporting frame; a trigger assembly, which is provided on the adjacent sliding rod, for causing the mounting frame and the supporting frame to have a tendency to move relative to each other.

[0014] Further description, the trigger assembly includes: a second limiting rod, fixedly connected to the adjacent sliding rod, the second limiting groove is used to limit the sliding rod, a fourth elastic element is fixedly connected between the support frame and the mounting frame, the second limiting groove is an inclined groove, used to enable the limiting member and the mounting frame to slide relative to each other.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention tightens the steel strand by means of the retracted fixing belt, so that during the cutting process, an external force is present to overcome the force that interferes with the normal shape of the steel strand itself caused by the high-speed rotating saw blade, thereby preventing the cutting area of ​​the steel strand from spreading, thereby improving the cutting quality and avoiding the danger caused by the jumping of the steel strand; the second elastic element is compressed to generate elastic force, so that the adjacent centering pieces apply a clamping force to the steel strand, and the magnitude of the applied clamping force is related to the diameter of the steel strand, so that the clamping force is matched with the diameter of the steel strand, and the protection of the steel strand is strengthened under the premise of ensuring stable clamping; the adjacent areas on the steel strand are pulled by the fixing belt in a fully retracted state, so that the cutting area of ​​the steel strand is tightened, and uneven deformation or jumping of the steel strand is prevented during the cutting process, thereby ensuring a smooth cutting surface and reducing burrs, reducing the occurrence of cutting defects, and facilitating subsequent end processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 It is a three-dimensional structural cross-sectional view of the steel strand of the present invention when it moves in the guide shell;

[0018] Figure 3 It is a three-dimensional structural cross-sectional view of the base frame, the movable frame and the mounting frame of the present invention;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the saw blade of the present invention when cutting a steel strand;

[0020] Figure 5 It is a cross-sectional view of the three-dimensional structure of the mounting frame and the supporting frame of the present invention when they slide relative to each other;

[0021] Figure 6 It is a three-dimensional structural exploded diagram of the mobile frame and the parts thereon of the present invention;

[0022] Figure 7 is a schematic diagram of the three-dimensional structure of the third elastic element of the present invention when it is deformed;

[0023] Figure 8 This is a schematic diagram of the three-dimensional structure of the rack driving the gear to rotate in the present invention;

[0024] Fig. 9 For the present invention Figure 8 A magnified view of the three-dimensional structure at center A;

[0025] Fig.10 It is a three-dimensional structural exploded view of the support frame and the parts thereon of the present invention.

[0026] In the above drawings: 101: steel strand, 1: base frame, 2: mobile frame, 3: motor, 4: saw blade, 5: mounting frame, 6: support frame, 7: fixed belt, 8: L-shaped plate, 901: hydraulic push rod, 902: sliding rod, 903: connecting rod, 904: first elastic element, 1001: electric roller group, 1002: guide shell, 1101: fixing ring, 1102: centering piece, 1103: first limiting rod, 1104: second elastic element, 1201: rack, 1202: gear, 1203: first limiting groove, 1301: limiting piece, 1302: second limiting groove, 1303: third elastic element, 1304: second limiting rod, 1305: fourth elastic element. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1-Figure 5 As shown in the figure, an embodiment of the present invention is proposed, which provides a cutting device for the production of prestressed steel strands to solve the problem that the cutting area of ​​the steel strands is scattered and the self-strength is reduced when the existing steel strands are cut, and the device comprises: a base frame 1, the base frame 1 is slidably connected to the mobile frame 2; a motor 3 is installed on the mobile frame 2, the output shaft of the motor 3 is fixedly connected to the saw blade 4, the rotation direction of the saw blade 4 is the same as the rotation direction of the steel strand 101, and is used to reduce the degree of spreading of the steel strand 101; a mounting frame 5 is fixedly connected to the base frame 1, and the mounting frame 5 is provided with support frames 6 arranged at intervals, and the support frames 6 are fixedly connected to the fixed The fixed belt 7 is used to tighten the steel strand 101 to ensure the stability of the steel strand 101 during the cutting process. The support frames 6 are arranged at intervals and are distributed in a centrally symmetrical manner. They are used to apply torsional pressure to the steel strands 101 in adjacent areas. The support frames 6 are slidably connected to an L-shaped plate 8, and the L-shaped plate 8 is fixedly connected to adjacent ends of the adjacent fixed belts 7; a power mechanism is arranged on a side of the base frame 1 away from the mounting frame 5, and is used to make the base frame 1 and the movable frame 2 slide relative to each other; there are two limiting mechanisms arranged at intervals, both of which are arranged on the base frame 1, and are used to position the steel strand 101.

[0029] In the above scheme, the base frame 1 is welded by steel sections to ensure stability during subsequent work. There are two support frames 6 that are symmetrically arranged. The saw blade 4 is located between the two fixing belts 7. There is a certain distance between the two fixing belts 7, and the distance is not less than the thickness of the saw blade 4. The fixing belt 7 is a high-strength steel sheet with good mechanical properties (including but not limited to high elasticity, high tensile strength and high yield strength). A number of protrusions are provided on the inner side of the fixing belt 7 to increase the friction when in contact with the steel strand 101, thereby improving the stability of the steel strand 101 during the cutting process. When using this device, the steel strand 101 is passed through the limiting mechanism (the steel strand 101 moves from right to left). After the steel strand 101 passes through the saw blade 4 and reaches the cutting length, the saw blade 4 is driven to rotate at high speed by the output shaft of the motor 3, and then the power mechanism is used to drive the moving frame 2, the motor 3 and the saw blade 4 to move downward together, so that the saw blade 4 approaches the steel strand 101, and during the process, the power mechanism is used to make the L-shaped plate 8 slide along the adjacent supporting frame 6, even if the L-shaped plate 8 pulls the adjacent fixing belt 7, the fixing belt 7 gradually closes and tightens the steel strand 101, and as the mobile frame 2 continues to move downward, the high-speed rotating saw blade 4 gradually contacts the steel strand 101 to perform the cutting work. In the cutting process, the steel strand 101 is tightened by the closed fixing belt 7, so that during the cutting process, there is an external force to overcome the force that interferes with the normal shape of the steel strand 101 caused by the high-speed rotating saw blade 4, thereby preventing the cutting area of ​​the steel strand 101 from dispersing, thereby improving the cutting quality and avoiding the danger caused by the jumping of the steel strand 101. After the cutting is completed, the power mechanism is used to drive the mobile frame 2 and the parts thereon to reset together, and then the steel strand 101 is continuously conveyed through the limit mechanism, and this is repeated until all the cutting work is completed.

[0030] like Figure 3-Figure 6 As shown, the power mechanism includes: a hydraulic push rod 901, which is installed on the side of the base frame 1 away from the mounting frame 5, and the telescopic end of the hydraulic push rod 901 is fixedly connected to the mobile frame 2; two sliding rods 902 are arranged at intervals and are respectively slidably connected to adjacent support frames 6, a connecting rod 903 is rotatably connected between the sliding rod 902 and the mobile frame 2, and a first elastic element 904 is fixedly connected between the sliding rod 902 and the adjacent L-shaped plate 8.

[0031] In the above scheme, the hydraulic push rod 901 is connected to the external hydraulic system to control the movement of the telescopic end of the hydraulic push rod 901. The length of the projection of the hinge point between the connecting rod 903 and the mobile frame 2 on the horizontal plane from the steel strand 101 is less than the length of the projection of the intersection point between the connecting rod 903 and the adjacent sliding rod 902 on the horizontal plane from the steel strand 101 (that is, the connecting rod 903 is placed obliquely), which is used to make the sliding rod 902 and the adjacent support frame 6 slide relative to each other. The first elastic element 904 is a spring, which is used to apply elastic force to the adjacent L-shaped plate 8. When the mobile frame 2 moves downward, the mobile frame 2 squeezes the connecting rod downward. 903, since the connecting rod 903 is blocked by the adjacent sliding rod 902, the connecting rod 903 cannot move downward and can only move horizontally, that is, the connecting rod 903 drives the sliding rod 902 to move horizontally (the two sliding rods 902 move back to back), and the sliding rod 902 drives the adjacent L-shaped plate 8 to move horizontally together through the adjacent first elastic element 904, and the L-shaped plate 8 pulls the adjacent fixing belt 7, and the fixing belt 7 gradually retracts and gradually tightens the adjacent area of ​​the steel strand 101, thereby ensuring the stability of the cutting area of ​​the steel strand 101 and improving the cutting quality (before performing the cutting action to complete the tightening of the steel strand 101).

[0032] like Figure 1 and Figure 2 As shown, the limiting mechanism includes: a plurality of electric roller groups 1001 arranged at intervals and all installed on a base frame 1, a soft material is provided on the outer side of the electric roller group 1001, and the base frame 1 is fixedly connected with guide shells 1002 arranged at intervals for guiding the steel strand 101; a centering component is provided on an adjacent support frame 6 for centering the steel strand 101.

[0033] In the above scheme, there are two motorized roller groups 1001 arranged on the left and right, each group contains two motorized rollers arranged in a mirror image up and down, the soft material on the outside of the motorized roller group 1001 is rubber, the distance between the upper and lower motorized rollers is smaller than the diameter of the steel strand 101, and there is a rounded corner on the inner side of the end of the guide shell 1002 to facilitate the entry of the steel strand 101. In the process of moving the steel strand 101 to the left, when the steel strand 101 contacts the rubber layer on the outer side of the motorized roller group 1001, the rubber layer is squeezed and deformed to allow the steel strand 101 to pass through, and then the motorized roller group 1001 is used to drive the steel strand 101 to move to the left, thereby realizing automatic material refilling, reducing the operating steps of the staff, and reducing the work intensity. During the process, the guide shell 1002 continuously guides the steel strand 101.

[0034] like Figure 4 and Figure 8-Figure 10As shown, the centering assembly includes: a fixing ring 1101, fixedly connected to the adjacent support frame 6, the fixing ring 1101 is slidably connected with a centering piece 1102 arranged at intervals, and the opposite sides of the centering piece 1102 on the same fixing ring 1101 are provided with a soft layer for preventing scratches when centering the steel strand 101, the centering piece 1102 is slidably connected with a first limiting rod 1103, and a second elastic element 1103 is fixedly connected between the first limiting rod 1103 and the fixing ring 1101 04; a transmission structure, arranged on the mobile frame 2, for making the fixed ring 1101 and the centering piece 1102 slide relative to each other; the transmission structure includes: a rack 1201, fixedly connected to the mobile frame 2, the fixed ring 1101 is rotatably connected to a gear 1202, the gear 1202 is meshed with the rack 1201, the gear 1202 is provided with first limiting grooves 1203 arranged at intervals, the first limiting grooves 1203 are inclined grooves, for limiting adjacent first limiting rods 1103.

[0035] In the above scheme, there are four centering pieces 1102 on the same fixing ring 1101 arranged in a ring, and the soft layer on the centering piece 1102 is made of rubber material, which is used to strengthen the protection of the steel strand 101 under the premise of ensuring that the clamping force is applied to the steel strand 101. The axis of the fixing ring 1101 coincides with the axis of the guide shell 1002, and the first limiting groove 1203 on the same gear 1202 gradually approaches the center of the gear 1202 in the clockwise direction (such as Figure 8Taking the left viewing direction as an example), the second elastic element 1104 is a spring, which is used to apply pressure to the adjacent centering piece 1102. In the initial state, the fixing ring 1101 "wraps" the adjacent centering piece 1102, and the axis of the gear 1202 coincides with the axis of the fixing ring 1101. During the downward movement of the movable frame 2, the movable frame 2 drives the rack 1201 to move downward together, and the rack 1201 drives the adjacent gear 1202 to rotate, and the first limiting groove 1203 begins to squeeze the adjacent first limiting rod 1103. The first limiting rod 1103 on the same gear 1202 begins to move in opposite directions. The first limiting rod 1103 drives the adjacent centering piece 1102 to move toward the axis together through the adjacent second elastic element 1104, and the centering piece 1102 gradually clamps the steel strand 101, thereby ensuring the stability of the steel strand 101 during the cutting process and preventing vibration caused by cutting from affecting the cutting accuracy. This causes the end face of the steel strand 101 to be uneven after cutting, affecting the subsequent normal use of the steel strand 101. As the rack 1201 continues to move downward, when the centering piece 1102 can no longer move closer to the steel strand 101 (the moving distance of the centering piece 1102 is related to the diameter of the steel strand 101), the second elastic element 1104 is compressed, thereby applying a greater clamping force to the adjacent centering piece 1102, so that the clamping force matches the diameter of the steel strand 101, thereby strengthening the protection of the steel strand 101 while ensuring stable clamping. At the same time, during the cutting process, since the movable frame 2 continues to move downward, the sliding rod 902 continues to compress the adjacent first elastic element 904, thereby further increasing the clamping force on the steel strand 101, thereby reducing the impact of additional interference force caused by the increase in contact area between the saw blade 4 and the steel strand 101 as the cutting process progresses.

[0036] like Figure 3 , Figure 8 and Fig.10 As shown, it also includes: a tensioning mechanism, which is two arranged at intervals and are both set on the mounting frame 5, for tightening the steel strand 101, the tensioning mechanism includes: a limit member 1301, which is slidably connected to the mounting frame 5, the mounting frame 5 is slidably connected to the support frame 6, the limit member 1301 is provided with a second limit groove 1302, and a third elastic element 1303 is fixedly connected between the limit member 1301 and the adjacent support frame 6; a trigger component, which is set on the adjacent sliding rod 902, and is used to make the mounting frame 5 and the support frame 6 have a tendency to move relative to each other, the trigger component includes: a second limit rod 1304, which is fixedly connected to the adjacent sliding rod 902, the second limit groove 1302 is used to limit the sliding rod 902, the second limit groove 1302 is an inclined groove, which is used to make the limit member 1301 and the mounting frame 5 slide relative to each other, and a fourth elastic element 1305 is fixedly connected between the support frame 6 and the mounting frame 5.

[0037] In the above scheme, the third elastic element 1303 is a tension spring, which is used to apply tension to adjacent support frames 6, so that the two support frames 6 have a tendency to move in opposite directions. The fourth elastic element 1305 is a tension spring, and is initially in a stretched state, which is used to apply tension to adjacent support frames 6. The elastic coefficient of the third elastic element 1303 is greater than the elastic coefficient of the fourth elastic element 1305. The length of the second limiting groove 1302 projected on the "Y" axis on the horizontal plane is greater than the relative sliding distance between the sliding rod 902 and the adjacent support frame 6. In the process of the two sliding rods 902 moving in opposite directions, the sliding rod 902 drives the adjacent second limiting rod 1304 to move together, and the second limiting rod 1304 is at the relative The two limit members 1301 start to move backwards, and the limit members 1301 slide relative to the mounting frame 5. The third elastic element 1303 is stretched, and the generated tension is applied to the adjacent support frame 6, that is, the two support frames 6 and the parts thereon have a tendency to move backwards, so that the fixing belt 7 in a fully retracted state pulls the adjacent area on the steel strand 101, tightens the cutting area of ​​the steel strand 101, and prevents the steel strand 101 from uneven deformation or jumping during the cutting process, thereby ensuring a smooth cutting surface and reducing burrs, reducing the occurrence of cutting defects, and facilitating subsequent end processing.

[0038] Although the present disclosure has been described with respect to only a limited number of embodiments, those skilled in the art having benefit of this disclosure will appreciate that various other embodiments can be devised without departing from the scope of the present invention. Accordingly, the scope of the present invention should be limited only by the appended claims.

Claims

1. A cutting device for prestressed steel strand production, characterized in that: Included are: A base frame (1), wherein the base frame (1) is slidably connected to a movable frame (2); A motor (3) is mounted on the movable frame (2), and the output shaft of the motor (3) is fixedly connected to a saw blade (4); A mounting frame (5) is fixedly connected to the base frame (1), the mounting frame (5) is provided with support frames (6) arranged at intervals, the support frames (6) are fixedly connected with fixing belts (7), the fixing belts (7) are used to tighten the steel strands (101) to ensure the stability of the steel strands (101) during cutting, the support frames (6) are slidably connected with an L-shaped plate (8), the L-shaped plate (8) is fixedly connected to adjacent ends of adjacent fixing belts (7); A power mechanism, arranged on a side of the base frame (1) away from the mounting frame (5), and used to enable the base frame (1) and the movable frame (2) to slide relative to each other; The limiting mechanisms are two spaced-apart devices, both provided on the base frame (1), and used for positioning the steel strand (101).

2. A cutting device for prestressed steel strand production according to claim 1, characterized in that: The rotation direction of the saw blade (4) is the same as that of the steel strand (101), and is used to reduce the degree of unraveling of the steel strand (101).

3. A cutting device for prestressed steel strand production according to claim 1, characterized in that: The support frames (6) are arranged at intervals and are distributed in a centrally symmetrical manner, and are used to apply torsional pressure in the same direction to the steel strands (101) in adjacent areas.

4. A cutting device for prestressed steel strand production according to claim 1, characterized in that: The power mechanism comprises: A hydraulic push rod (901) is installed on a side of the base frame (1) away from the mounting frame (5), and a telescopic end of the hydraulic push rod (901) is fixedly connected to the moving frame (2); The sliding rods (902) are two arranged at intervals and are respectively slidably connected to the adjacent support frames (6); a connecting rod (903) is rotatably connected between the sliding rod (902) and the movable frame (2); and a first elastic element (904) is fixedly connected between the sliding rod (902) and the adjacent L-shaped plate (8).

5. A cutting device for prestressed steel strand production according to claim 4, characterized in that: The limiting mechanism comprises: A plurality of electric roller groups (1001) are arranged at intervals and are all mounted on the base frame (1); a soft material is provided on the outer side of the electric roller group (1001); and the base frame (1) is fixedly connected with guide shells (1002) arranged at intervals and used for guiding the steel strands (101); A centering component is arranged on the adjacent support frame (6) and is used for centering the steel strand (101).

6. A cutting device for prestressed steel strand production according to claim 5, characterized in that: The centering component includes: A fixing ring (1101) is fixedly connected to the adjacent support frame (6); the fixing ring (1101) is slidably connected to centering pieces (1102) arranged at intervals; the centering pieces (1102) are slidably connected to a first limiting rod (1103); a second elastic element (1104) is fixedly connected between the first limiting rod (1103) and the fixing ring (1101); A transmission structure is arranged on the movable frame (2) and is used to enable the fixing ring (1101) and the centering piece (1102) to slide relative to each other.

7. A cutting device for prestressed steel strand production according to claim 6, characterized in that: The opposite sides of the centering piece (1102) on the same fixing ring (1101) are provided with a soft layer for preventing scratches when centering the steel strand (101).

8. A cutting device for prestressed steel strand production according to claim 6, characterized in that: The transmission structure comprises: The rack (1201) is fixedly connected to the movable frame (2); the fixed ring (1101) is rotatably connected to a gear (1202); the gear (1202) is meshed with the rack (1201); the gear (1202) is provided with first limiting grooves (1203) arranged at intervals; the first limiting grooves (1203) are inclined grooves for limiting adjacent first limiting rods (1103).

9. A cutting device for prestressed steel strand production according to claim 4, characterized in that: Also included are: There are two tensioning mechanisms arranged at intervals, both of which are provided on the mounting frame (5) and are used to tighten the steel strand (101), and the tensioning mechanisms include: A limiting member (1301) is slidably connected to the mounting frame (5), the mounting frame (5) is slidably connected to the support frame (6), the limiting member (1301) is provided with a second limiting groove (1302), and a third elastic element (1303) is fixedly connected between the limiting member (1301) and the adjacent support frame (6); a trigger component is arranged on the adjacent sliding rod (902) and is used to enable the mounting frame (5) and the support frame (6) to have a tendency to move relative to each other.

10. A cutting device for prestressed steel strand production according to claim 9, characterized in that: The trigger component includes: A second limiting rod (1304) is fixedly connected to the adjacent sliding rod (902); the second limiting groove (1302) is used to limit the sliding rod (902); a fourth elastic element (1305) is fixedly connected between the support frame (6) and the mounting frame (5); the second limiting groove (1302) is an inclined groove, which is used to enable the limiting member (1301) and the mounting frame (5) to slide relative to each other.

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