Prestressed steel strand twisting device

Abstract

The utility model relates to the technical field of steel strand production, and discloses a prestressed steel strand twisting device. The prestressed steel strand twisting device comprises a bottom plate, a limiting pipe is fixedly installed above the bottom plate, a connecting frame is fixedly installed in the limiting pipe, a driving motor is installed in the center of the connecting frame in a penetrating and inserting mode, and a driving shaft is fixedly installed at the front end of a rotating shaft of the driving motor; a bearing plate and a limiting plate are installed on the outer side of the driving shaft in a penetrating mode, a bearing is installed on the outer side of the bearing plate and the outer side of the limiting plate in an embedded mode, and a wire cup is rotationally connected with the movable frame through a damping rotating shaft, so that the wire cup needs certain force during wire outgoing; the steel wire bypasses the guide wheel at the outer side end of the connecting rod from the outer side and penetrates through the limiting plate through the sleeve in the connecting pipe at the corresponding position, and the rotating angle of the connecting rod can be limited through the elastic force of the spring during stretching, so that the connecting rod enables the steel wire to be in a tightened state through the guide wheel, and tension deviation of the steel wire is avoided.

Description

Technical Field

[0001] This utility model relates to the field of steel strand production technology, specifically a prestressed steel strand twisting device. Background Technology

[0002] Prestressed steel strand is a type of stranded steel cable composed of 2, 3, 7 or 19 high-strength steel wires. According to different surface morphologies, it can be divided into: smooth steel strand, indented steel strand, die-drawn steel strand, galvanized prestressed steel strand, etc. Due to its advantages of high strength and excellent relaxation performance, it is widely used in concrete engineering, mining tunnels and other construction fields.

[0003] The existing Chinese utility model patent with publication number CN221269383U discloses a prestressed steel strand stranding device, including a stranding device body, a guiding and conveying mechanism, and an adjustable support mechanism. An auger assembly is provided on one side of the stranding device body, and an adjusting slide rail connects the auger assembly to the stranding device body. The guiding and conveying mechanism is located on the side of the auger assembly away from the stranding device body, and includes a pair of guiding conveying components. Multiple sets of evenly distributed support balls are rotatably connected to the sides of the pair of guiding conveying components that are close to each other. The adjustable support mechanism is located on the side of the guiding conveying components away from the support balls. This utility model, through the arrangement of the corresponding mechanisms, enables the prestressed steel strand stranding device to provide auxiliary support and guiding conveying for the prestressed steel strand, reducing the wear caused by the prestressed steel strand stranding device on the prestressed steel strand and improving the stability of the prestressed steel strand stranding process.

[0004] Existing stranding machines cannot adjust the tension of each wire. When the tension of a wire deviates from that of other wires, it will affect the quality of the stranded wire. At the same time, the existing twisting device may also affect the quality of the stranded wire because the wire will rub against the limiting structure during use. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a prestressed steel strand twisting device that has advantages such as no cleaning dead corners and no contact with the ground, thus solving the aforementioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a prestressed steel strand twisting device, comprising: a base plate, a limiting tube fixedly installed on the top of the base plate, a connecting frame fixedly installed inside the limiting tube, a drive motor inserted through the center of the connecting frame, a drive shaft fixedly installed at the front end of the drive motor's shaft, a receiving plate and a limiting plate inserted through the outer side of the drive shaft, bearings fitted onto the outer sides of the receiving plate and the limiting plate, a limiting frame fixedly installed at the front end of the drive shaft, and the front and rear sides of the limiting frame being movable. The device is equipped with guide wheels, and a sleeve is inserted inside the limiting frame. A sleeve is inserted inside the limiting plate, and a connecting pipe is inserted inside the limiting plate. A base is fixedly installed on the front side of the limiting plate, and a connecting rod is movably installed at the front end of the base. A spring is fixedly installed at one end of the connecting rod. A movable frame is installed on the front side of the receiving plate, and a spool is movably installed at the center of the movable frame. A support frame is fixedly installed on the front side of the base plate, and a cable outlet pipe is fixedly installed at the top of the support frame. The connecting frame can limit the position of the drive motor.

[0009] As a preferred embodiment of this utility model, the limiting tube is installed symmetrically on the top of the base plate with the center of the base plate as the reference, and the drive motor is fixedly installed inside the rear limiting tube through the connecting bracket; the drive motor can drive the drive shaft to rotate.

[0010] As a preferred embodiment of this utility model, the receiving plate is rotatably connected to the rear limiting tube of the base plate via a bearing, and the limiting plate is rotatably connected to the front limiting tube of the base plate via a bearing; the receiving plate can drive the spool to rotate.

[0011] As a preferred technical solution of this utility model, the limiting frame is fixed to the front end of the drive shaft by interlocking, and the guide wheels are installed in a ring on the front and rear sides of the limiting frame with the center of the limiting frame as the reference. The distance between the front guide wheel of the limiting frame and the axis of the drive shaft is smaller than the distance between the rear guide wheel of the limiting frame and the axis of the drive shaft. The limiting frame can easily drive the steel wire to rotate.

[0012] As a preferred embodiment of this utility model, the sleeve is made of graphite, and the connecting tube is installed in a ring around the outer edge of the limiting plate with the center of the limiting plate as the reference. The sleeve is also installed inside the connecting tube. The sleeve can limit the position of the steel wire.

[0013] As a preferred embodiment of this utility model, the base is installed in a ring shape on the front side of the limiting plate with the center of the limiting plate as the reference, and the installation position of the base corresponds one-to-one with the installation position of the connecting pipe. The connecting rod and the base form a rotatable connection, and a guide wheel is movably installed on the outer end of the connecting rod. The base can limit the position of the connecting rod.

[0014] As a preferred embodiment of this utility model, the spring is fixed to the inner end of the connecting rod, and the rear end of the spring is fixedly connected to the base. The movable frame is movably connected to the receiving plate by screws. The spool is rotatably connected to the movable frame by a damping shaft. The axis of the outlet tube and the axis of the drive shaft are in the same straight line. The outlet tube can limit the outlet position.

[0015] Compared with the prior art, the present invention provides a prestressed steel strand twisting device, which has the following beneficial effects:

[0016] 1. This utility model utilizes a connecting rod, which is movably mounted on the top of the base, forming a rotatable connection between the connecting rod and the base. A guide wheel is movably mounted on the outer end of the connecting rod, and a spring is fixed to the inner end of the connecting rod, with the rear end of the spring fixedly connected to the base. The base is installed in a ring shape on the front side of the limiting plate, with the center of the limiting plate as the reference. The installation position of the base corresponds one-to-one with the installation position of the connecting pipe. The spool can wind up a certain amount of steel wire, and the spool forms a rotatable connection with the movable frame through a damping shaft. This requires a certain force when the spool releases the wire. The steel wire passes around the guide wheel on the outer end of the connecting rod and then through the sleeve inside the corresponding connecting pipe and through the limiting plate. This method can limit the rotation angle of the connecting rod through the elastic force of the spring during tension, thereby keeping the steel wire taut through the guide wheel and preventing deviations in the tension of the steel wire.

[0017] 2. This utility model, through the setting of guide wheels and sleeves, allows the guide wheels to reduce the frictional force when the steel wire moves by rotating. The guide wheels are installed in a ring on the front and rear sides of the limiting frame with the center of the limiting frame as the reference. The distance between the guide wheel on the front side of the limiting frame and the axis of the drive shaft is smaller than the distance between the guide wheel on the rear side of the limiting frame and the axis of the drive shaft. This allows the steel wire to pass through the sleeve in the center of the limiting frame from the inside of the guide wheel on the rear side of the limiting frame after passing through the limiting plate, and finally enter the outlet tube from the outside of the guide wheel on the front side of the limiting frame. This method ensures that the steel wire is in a horizontal state when passing through the sleeve inside the limiting frame, with the surface of the steel wire parallel to the inner wall of the sleeve. Furthermore, the sleeve is made of graphite material, which reduces the frictional force between the steel wire and the sleeve during twisting, preventing damage to the steel wire due to friction during twisting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the drive motor mounting structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the connecting rod installation structure of this utility model;

[0021] Figure 4This is a schematic diagram of the spool mounting structure of this utility model;

[0022] The components are as follows: 1. Base plate; 11. Limiting tube; 12. Connecting frame; 13. Drive motor; 14. Drive shaft; 15. Support plate; 16. Limiting plate; 17. Bearing; 18. Limiting frame; 19. Guide wheel; 110. Sleeve; 111. Connecting tube; 112. Base; 113. Connecting rod; 114. Spring; 115. Movable frame; 116. Spool; 117. Support frame; 118. Outlet tube. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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 this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1 - Figure 4In this embodiment, a prestressed steel strand twisting device includes: a base plate 1, a limiting tube 11 fixedly installed on the top of the base plate 1, a connecting frame 12 fixedly installed inside the limiting tube 11, a drive motor 13 inserted through the center of the connecting frame 12, a drive shaft 14 fixedly installed at the front end of the shaft of the drive motor 13, a receiving plate 15 and a limiting plate 16 inserted through the outer side of the drive shaft 14, bearings 17 fitted on the outer sides of the receiving plate 15 and the limiting plate 16, a limiting frame 18 fixedly installed at the front end of the drive shaft 14, and guide wheels 1 movably installed on the front and rear sides of the limiting frame 18. 9. A sleeve 110 is inserted inside the limiting frame 18. A sleeve 110 is inserted inside the limiting plate 16. A connecting pipe 111 is inserted inside the limiting plate 16. A base 112 is fixedly installed on the front side of the limiting plate 16. A connecting rod 113 is movably installed at the front end of the base 112. A spring 114 is fixedly installed at one end of the connecting rod 113. A movable frame 115 is installed on the front side of the receiving plate 15. A spool 116 is movably installed at the center of the movable frame 115. A support frame 117 is fixedly installed on the front side of the base plate 1. A cable outlet pipe 118 is fixedly installed at the top of the support frame 117.

[0027] The limiting tube 11 is mirror-symmetrically installed above the base plate 1 with the center of the base plate 1 as the reference. The drive motor 13 is fixedly installed inside the rear limiting tube 11 through the connecting bracket 12. The receiving plate 15 is rotatably connected to the rear limiting tube 11 of the base plate 1 through the bearing 17. The limiting plate 16 is rotatably connected to the front limiting tube 11 of the base plate 1 through the bearing 17. The limiting frame 18 is fixed to the front end of the drive shaft 14 by insertion. The guide wheels 19 are installed in a ring on the front and rear sides of the limiting frame 18 with the center of the limiting frame 18 as the reference, and the distance between the front guide wheel 19 of the limiting frame 18 and the axis of the drive shaft 14 is less than the distance between the rear guide wheel 19 of the limiting frame 18 and the axis of the drive shaft 14. The sleeve 110 is made of graphite. The connecting tube 111 is connected to the limiting plate 16. The center is used as a reference and is installed in a ring around the outer edge of the limiting plate 16. The connecting pipe 111 is also installed with a sleeve 110 inside. The base 112 is installed in a ring around the front of the limiting plate 16 with the center as a reference. The installation position of the base 112 corresponds one-to-one with the installation position of the connecting pipe 111. The connecting rod 113 and the base 112 are rotatably connected. The outer end of the connecting rod 113 is movably installed with a guide wheel 19. The spring 114 is fixed to the inner end of the connecting rod 113. The rear end of the spring 114 is fixedly connected to the base 112. The movable frame 115 is movably connected to the receiving plate 15 by screws. The spool 116 is rotatably connected to the movable frame 115 by a damping shaft. The axis of the outlet pipe 118 and the axis of the drive shaft 14 are in the same straight line.

[0028] Specifically, the base plate 1 can limit the position of the limiting tube 11, the limiting tube 11 can limit the position of the receiving plate 15 and the limiting plate 16, the connecting frame 12 can limit the position of the drive motor 13, the drive motor 13 can drive the drive shaft 14 to rotate, the drive shaft 14 can drive the receiving plate 15 and the limiting plate 16 to rotate, the receiving plate 15 can drive the spool 116 to rotate, the limiting plate 116 can limit the position of the steel wire, the bearing 17 can facilitate the rotation of the receiving plate 15 and the limiting plate 16, the limiting frame 18 can facilitate the rotation of the steel wire, and the guide wheel 19 can reduce the rotation by means of rotation. The frictional force when the steel wire moves, the sleeve 110 can limit the position of the steel wire, the connecting pipe 111 can facilitate the connection between the sleeve 110 and the limiting plate 16, the base 112 can limit the position of the connecting rod 113, the connecting rod 113 can adjust the tension of the steel wire by the elastic force of the spring 114 to keep the steel wire taut, the spring 114 can limit the rotation angle of the connecting rod 113, the movable frame 115 can limit the position of the spool 116, the spool 16 can bear a certain amount of steel wire, the support frame 117 can limit the position of the outlet pipe 118, and the outlet pipe 118 can limit the outlet position.

[0029] In use, the connecting rod 113 is movably mounted on the top of the base 112, forming a rotatable connection between the connecting rod 113 and the base 112. A guide wheel 19 is movably mounted on the outer end of the connecting rod 113. A spring 114 is fixed to the inner end of the connecting rod 113, and the rear end of the spring 114 is fixedly connected to the base 112. The base 112 is installed in a ring shape on the front side of the limiting plate 16 with the center of the limiting plate 16 as a reference, and the installation position of the base 112 is the same as the installation position of the connecting pipe 111. With a one-to-one correspondence, the spool 116 can wind up a certain amount of steel wire, and the spool 116 is rotatably connected to the movable frame 115 through the damping shaft, so that the spool 116 needs a certain force when the wire is released. The steel wire passes around the guide wheel 19 at the outer end of the connecting rod 113 from the outside, and then passes through the sleeve 110 inside the corresponding connecting tube 111 and through the limiting plate 16. In this way, the elastic force of the spring 114 during tension can limit the rotation angle of the connecting rod 113, so that the connecting rod 113 keeps the steel wire in a taut state through the guide wheel 19, avoiding the deviation of the steel wire tension. The guide wheel 19 can reduce the friction when the steel wire moves by rotating. The guide wheel 19 is installed in a ring on the front and rear sides of the limiting frame 18 with the center as the reference, and the distance between the front guide wheel 19 of the limiting frame 18 and the axis of the drive shaft 14 is smaller than the distance between the rear guide wheel 19 of the limiting frame 18 and the axis of the drive shaft 14, so that the steel wire passes through the limiting plate 16 and then exits the limiting plate 16. The inner side of the guide wheel 19 on the rear side of the frame 18 passes through the sleeve 110 in the center of the limiting frame 18 and finally enters the outlet tube 118 from the outer side of the guide wheel 19 on the front side of the limiting frame 18. This method allows the steel wire to be in a horizontal state when passing through the sleeve 110 inside the limiting frame 18. The surface of the steel wire is parallel to the inner wall of the sleeve 110. Furthermore, the sleeve 110 is made of graphite, which can reduce the friction between the steel wire and the sleeve 110 when twisting, thus preventing damage to the steel wire due to friction during twisting.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pre-stressed steel strand twisting device, characterized in that, include: A base plate (1) is provided, with a limiting tube (11) fixedly installed on its upper part. A connecting frame (12) is fixedly installed inside the limiting tube (11). A drive motor (13) is inserted through the center of the connecting frame (12). A drive shaft (14) is fixedly installed at the front end of the shaft of the drive motor (13). A receiving plate (15) and a limiting plate (16) are inserted through the outer side of the drive shaft (14). A bearing (17) is fitted on the outer side of the receiving plate (15) and the limiting plate (16). A limiting frame (18) is fixedly installed at the front end of the drive shaft (14). Guide wheels (19) are movably installed on the front and rear sides of the limiting frame (18). A connecting frame (19) is inserted through the inner part of the limiting frame (18). A sleeve (110) is installed inside the limiting plate (16), a connecting pipe (111) is installed inside the limiting plate (16), a base (112) is fixedly installed on the front side of the limiting plate (16), a connecting rod (113) is movably installed at the front end of the base (112), a spring (114) is fixedly installed at one end of the connecting rod (113), a movable frame (115) is installed on the front side of the receiving plate (15), a spool (116) is movably installed at the center of the movable frame (115), a support frame (117) is fixedly installed on the front side of the base plate (1), and a cable outlet pipe (118) is fixedly installed at the top of the support frame (117).

2. The prestressed steel strand tightening device according to claim 1, characterized in that: The limiting tube (11) is installed symmetrically in front and behind the base plate (1) with the center of the base plate (1) as the reference. The drive motor (13) is fixedly installed inside the rear limiting tube (11) through the connecting bracket (12).

3. The prestressed steel strand tightening device according to claim 1, characterized in that: The receiving plate (15) is rotatably connected to the rear limiting tube (11) of the base plate (1) via the bearing (17), and the limiting plate (16) is rotatably connected to the front limiting tube (11) of the base plate (1) via the bearing (17).

4. The prestressed steel strand tightening device according to claim 1, characterized in that: The limiting frame (18) is fixed to the front end of the drive shaft (14) by interlocking. The guide wheel (19) is installed in a ring on the front and rear sides of the limiting frame (18) with the center of the limiting frame (18) as the reference. The distance between the front guide wheel (19) of the limiting frame (18) and the axis of the drive shaft (14) is less than the distance between the rear guide wheel (19) of the limiting frame (18) and the axis of the drive shaft (14).

5. The prestressed steel strand tightening device according to claim 1, characterized in that: The sleeve (110) is made of graphite. The connecting tube (111) is installed in a ring around the outer edge of the limiting plate (16) with the center of the limiting plate (16) as the reference. The sleeve (110) is also installed inside the connecting tube (111).

6. The prestressed steel strand tightening device according to claim 1, characterized in that: The base (112) is installed in a ring around the center of the limiting plate (16) on the front side of the limiting plate (16), and the installation position of the base (112) corresponds one-to-one with the installation position of the connecting pipe (111). The connecting rod (113) and the base (112) form a rotatable connection, and a guide wheel (19) is movably installed on the outer end of the connecting rod (113).

7. The prestressed steel strand tightening device according to claim 1, characterized in that: The spring (114) is fixed to the inner end of the connecting rod (113), and the rear end of the spring (114) is fixedly connected to the base (112). The movable frame (115) is movably connected to the receiving plate (15) by screws. The spool (116) is rotatably connected to the movable frame (115) by a damping shaft. The axis of the outlet tube (118) is in the same straight line as the axis of the drive shaft (14).

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