A prestressed steel strand integral bundle threading device

Abstract

The present invention relates to the technical field of engineering machinery, and specifically to an integral bundle threading device for prestressed steel strands, the bundle threading device comprising: a main shaft connected to the output shaft of a power device; and a plurality of bundle threading components respectively connected to the main shaft in a transmission manner; the plurality of bundle threading components are linearly arranged in sequence, and a guide assembly for gathering a plurality of steel strands is provided at one end of the outgoing line; the present invention greatly reduces the resistance and friction caused by a single bundle threading by designing an integral bundle threading device for prestressed steel strands composed of a plurality of bundle threading components, and significantly improves the efficiency and reliability of the bundle threading operation; in addition, the device presets different modes to cope with different bundle threading scenarios, including but not limited to single bundle threading, multiple synchronous bundle threading, etc., making the device more flexible and efficient.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, in particular to a prestressed steel strand integral bundle threading device. Background Art

[0002] Prestressed corrugated pipes are widely used in bridges. Prestressed corrugated pipes are generally installed in the lower half of the web of the beam. In order to tension and grout after pouring, prestressed corrugated pipes are often set to a parabola shape. Prestressed steel strands shuttle through the prestressed corrugated pipes, and the two together constitute prestressed tendons.

[0003] The concrete bridge deck will bend downward due to its own gravity or the weight of the vehicles on the bridge deck, causing stretching or even cracking under the bridge body. Therefore, after pouring, the prestressed steel strands need to be contracted and the prestressed tendons need to be tensioned to prevent the above phenomenon from happening. When the prestressed steel strands are contracted at the bottom of the bridge, the lower half of the bridge body is compressed and deformed upward, which can offset the downward deformation of the bridge body. Compared with traditional steel-concrete structure bridges, bridges with prestressed tendons can withstand greater loads.

[0004] Regarding the method of threading prestressed steel strands through prestressed corrugated pipes, the method currently commonly used is to use a bundle threading machine. The operation process is to thread a single steel strand into the bundle threading machine, and then the bundle threading machine transports it to the prestressed corrugated pipe. After reserving about 40-60 cm of tensioning head, use a cutting machine to cut the steel strand, and then repeat the steps until a preset number of steel strands are inserted into the prestressed corrugated pipe.

[0005] Although the strand threading machine can improve engineering efficiency, the problems with the above single strand threading method are still very obvious: the efficiency is not high enough, and when there are many steel strands in the prestressed corrugated pipe, the subsequent threading resistance will increase, and the strands may even be clamped by the steel strands in the prestressed corrugated pipe, making it impossible to thread the strand. In this case, the steel strand being threaded can only be pulled out and re-threaded.

[0006] Based on the above introduction and the problems faced by existing bundle threading machines, combined with actual engineering experience, the present invention is committed to exploring new bundle threading devices to achieve the purpose of overall bundle threading of steel strands. Summary of the invention

[0007] The present invention aims at the technical problems existing in the prior art and provides a prestressed steel strand integral bundle threading device to solve the problems that the prestressed steel strand bundle threading efficiency is not high enough and the prestressed steel strand is easily clamped.

[0008] The technical solution of the present invention to solve the above technical problems is as follows:

[0009] A prestressed steel strand integral bundle threading device is provided, the bundle threading device comprising:

[0010] a main shaft connected to the output shaft of the power unit; and

[0011] A plurality of beam-penetrating components respectively connected to the main shaft in a transmission manner;

[0012] The plurality of bundle-threading components are linearly arranged in sequence, and a guide assembly for gathering a plurality of steel strands is provided at one end of the outgoing line.

[0013] Furthermore, the beam-threading component comprises:

[0014] Shell assembly;

[0015] A driving wheel rotatably mounted in the housing assembly, wherein the driving wheel is drivingly connected to the main shaft;

[0016] A driving gear coaxially arranged with the driving wheel;

[0017] a reduction gear meshing with the driving gear; and

[0018] A squeezing and pushing device installed on one side of the reduction gear, wherein the squeezing and pushing device is provided with an annular groove for squeezing and pushing the steel strand;

[0019] The annular groove is provided with a plurality of engaging openings in an annular shape.

[0020] Furthermore, the extrusion and pushing device includes two extrusion bodies;

[0021] One of the extrusion bodies is installed on one side of the reduction gear, and the other extrusion body is rotatably installed in the housing assembly;

[0022] The annular grooves are respectively opened at one end of the two extrusion bodies, and the other end of the extrusion body is provided with a gear ring, and the two gear rings are meshed and connected.

[0023] Furthermore, the shell assembly is provided with a guide portion, a guide hole is opened in the guide portion, the annular groove is located in the guide hole, and a bell mouth is provided at one end of the guide hole.

[0024] Furthermore, the bundle-threading component is also provided with an adjustment component for adjusting the distance between the two annular grooves to adapt to steel strands with different diameters.

[0025] Furthermore, the adjustment component includes:

[0026] an adjustment plate hinged to the housing assembly, wherein one of the extrusion bodies is rotatably mounted on the adjustment plate;

[0027] An adjusting bolt having one end passing through the adjusting plate and fixed on the housing assembly; and

[0028] A compression spring abutting between the other end of the adjusting bolt and the adjusting plate;

[0029] The tooth height of the gear ring is greater than the deformation amount of the compression spring.

[0030] Furthermore, the beam threading device further comprises:

[0031] A cutting machine disposed at the wire outlet of the bundle passing component;

[0032] A coupling detachably connected to the main shaft; and

[0033] A transmission assembly for transmitting the coupling power to the cutting machine.

[0034] Furthermore, the coupling comprises:

[0035] A base mounted on the output shaft of the power unit;

[0036] A mounting tube mounted on the base, wherein a side wall of the mounting tube is provided with an ear groove;

[0037] A clutch shaft is slidably mounted in the mounting tube, a limiting column is mounted on one end of the clutch shaft located in the mounting tube, and the limiting column slides in the ear groove; and

[0038] A spring is abutted between the base and the clutch shaft.

[0039] Furthermore, the transmission assembly comprises:

[0040] A linkage frame, wherein the linkage frame is rotatably connected to the clutch shaft through a bearing, the linkage frame is slidably connected to a frame body of the beam threading device, and the cutting machine is connected to the linkage frame through a cable;

[0041] A clutch disc, wherein the main clutch disc is fixed on the clutch shaft;

[0042] A driving disk, the driving disk is rotatably mounted on a frame of the beam threading device, and the clutch disk is detachably connected to the driving disk;

[0043] A first driving wheel, wherein the first driving wheel is coaxial with the driving disc;

[0044] A first driven wheel, the first driven wheel is drivingly connected to the first driving wheel;

[0045] a first bevel gear, the first bevel gear being coaxial with the first driven wheel;

[0046] a second bevel gear, the second bevel gear being meshed and connected with the first bevel gear; and

[0047] A second driving wheel, the second driving wheel is coaxial with the second bevel gear, and the second driving wheel is drivingly connected to a second driven wheel installed on the cutting machine.

[0048] Furthermore, the guide assembly includes a plurality of guide tubes installed at the ends of the guide holes, the ends of the guide tubes are provided with outlet flanges, and a convergence port is installed on a side of the outlet flange away from the guide tubes.

[0049] The beneficial effects of the present invention are:

[0050] The prestressed steel strand integral bundle threading device provided by the present invention reflects an in-depth understanding and careful consideration of the prestressed steel strand bundle threading work in bridge construction operations in terms of design, structural implementation and functional realization, which not only improves the efficiency of engineering construction, but also improves the construction quality and safety of bridges; the present invention greatly reduces the resistance and friction caused by a single strand threading by designing a prestressed steel strand integral bundle threading device composed of multiple strand threading components, and significantly improves the efficiency and reliability of the strand threading operation. In addition, the device presets different modes to cope with different strand threading scenarios, including but not limited to single strand threading, multiple synchronous strand threading, etc., making the device more flexible and efficient.

[0051] The prestressed steel strand integral bundle threading device of the present invention will be able to achieve fast and continuous steel strand bundle threading operations, effectively reducing delays and operational difficulties caused by steel strand clamping or increased bundle threading resistance. The present invention fully utilizes the advantages of mechanical transmission principles and modern engineering materials to provide an efficient and stable solution suitable for prestressed concrete bridges and other engineering projects requiring bundle threading operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the local structure of the present invention;

[0053] Figure 2 It is another perspective schematic diagram of the local structure of the present invention;

[0054] Figure 3 It is another perspective schematic diagram of the local structure of the present invention;

[0055] Figure 4 The internal structure of the present invention is a local detail Figure 1 ;

[0056] Figure 5 for Figure 4 A partial enlarged view of the area “A” in the middle;

[0057] Figure 6 The internal structure of the present invention is a local detail Figure 2 ;

[0058] Figure 7 It is the overall structural diagram of the beam-threading component of the present invention;

[0059] Figure 8 This is a disassembled diagram of the overall structure of the beam-threading component of the present invention;

[0060] Fig. 9 Partial details of the beam-threading component of the present invention Figure 1 ;

[0061] Fig.10 Partial details of the beam-threading component of the present invention Figure 2 ;

[0062] Fig.11 It is a schematic diagram of the overall structure of the present invention;

[0063] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0064] 1. Spindle;

[0065] 2. beam-through component; 21. housing assembly; 211. guide portion; 2110. guide hole; 22. driving wheel; 23. driving gear; 24. reduction gear; 25. squeezing and pushing device; 251. annular groove; 2510. bite opening; 252. extrusion body; 2520. gear ring;

[0066] 3. Guide assembly; 31. Guide tube; 32. Outlet flange; 33. Aggregation port;

[0067] 4. Adjustment assembly; 41. Adjustment plate; 42. Adjustment bolt; 43. Compression spring; 5. Cutting machine;

[0068] 6. Coupling; 61. Base; 62. Mounting tube; 621. Ear groove; 63. Clutch shaft; 631. Limiting column; 64. Spring;

[0069] 7. Transmission assembly; 71. Linkage frame; 72. Cable; 73. Clutch plate; 74. Driving plate; 75. First driving wheel; 76. First driven wheel; 77. First bevel gear; 78. Second bevel gear; 79. Second driving wheel; 710. Second driven wheel. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. In addition, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0071] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0072] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use scenarios of other materials.

[0074] The present invention provides the following preferred embodiments:

[0075] Embodiment 1

[0076] refer to Figures 1 to 3 As shown, in this embodiment, the prestressed steel strand integral bundle threading device provided by the present invention realizes a new type of integral bundle threading device capable of improving bundle threading efficiency through high integration and innovative design. The bundle threading device is mainly composed of a main shaft 1 connected to the output shaft of a power device and a plurality of bundle threading components 2 respectively connected to the main shaft 1 in a transmission manner. The plurality of bundle threading components 2 are linearly arranged in sequence and neatly arranged to ensure that the steel strands can be threaded in a uniform and continuous manner during the steel strand bundle threading operation. It can be understood that the number of bundle threading components 2 can be set to be the same as the number of preset steel strands. For example, if a group of steel strands has seven strands, seven bundle threading components 2 are set. The number of attached drawings of the present invention is six, which is only used as an example and should be understood by those skilled in the art.

[0077] In this embodiment, the power device can be an electric motor, a hydraulic or pneumatic device, which provides a stable and controllable rotational force to be transmitted to the main shaft 1. The design of the main shaft 1 needs to have both high strength and wear resistance to cope with the friction and stress that may be encountered in the process of providing power. The main shaft 1 can be connected to the beam-threading component 2 by gears, chains or belt drives to ensure effective power transmission and response speed.

[0078] Furthermore, the bundle-threading component 2 is the main driving component of the present invention, which is responsible for smoothly delivering the steel strands into the prestressed corrugated pipe. Multiple bundle-threading components 2 can transport a preset number of steel strands as a whole, reduce resistance and improve bundle-threading efficiency.

[0079] Furthermore, the guide component 3 can be designed as a conical barrel or a device provided with a guide tube 31, which is located at the outlet end of the bundle-threading component 2. Its function is to integrate and converge the multiple steel strands pushed by the bundle-threading component 2, ensuring that they are smoothly aggregated and guided into a preset corrugated tube path. The guide component 3 can be designed and adjusted according to different engineering requirements and steel strand specifications to adapt to the convergence needs in different situations.

[0080] Furthermore, under the orderly action of each bundle threading component 2, the steel strands enter the device from the inlet end and are pushed to the guide assembly 3 at the outlet end in sequence and stably. Under the convergence and guidance of the guide assembly 3, the integrated steel strand bundle is smoothly inserted into the prestressed corrugated pipe. The design of this embodiment greatly reduces the resistance and friction caused by a single bundle threading, and significantly improves the efficiency and reliability of the bundle threading operation. In addition, the device presets different modes to cope with different bundle threading scenarios, including but not limited to single bundle threading, multiple synchronous bundle threading, etc., making the device more flexible and efficient.

[0081] Furthermore, in order to ensure the continuity and reliability of the bundle threading operation, an automated control system can be equipped in actual applications to monitor the bundle threading status, adjust the transmission force and clamping force in real time, and even perform fault detection and self-repair to ensure the stability of the bundle threading process. The prestressed steel strand integral bundle threading device provided by the present invention reflects an in-depth understanding and careful consideration of the prestressed steel strand bundle threading work in bridge construction operations in terms of design, structural implementation and functional realization, which not only improves the engineering construction efficiency, but also improves the construction quality and safety of the bridge.

[0082] Embodiment 2

[0083] refer to Figures 6 to 10As shown, based on the prestressed steel strand integral bundle threading device recorded in Example 1, this embodiment further provides a more detailed structural implementation of the device to achieve more efficient and reliable steel strand bundle threading operation; in this embodiment, each bundle threading component 2 is composed of a shell assembly 21, a driving wheel 22, a driving gear 23, a reduction gear 24 and a squeezing and pushing device 25, and these components work together to achieve continuous and precise steel strand squeezing and pushing and bundle threading. The design of the shell assembly 21 must take into account both structural strength and operational convenience to ensure the stability of the device during operation and the convenience of maintenance. The shell provides structural support and protection for each bundle threading component 2 to prevent the external environment from affecting the internal mechanical components.

[0084] Furthermore, the driving wheel 22 is rotatably installed in the housing assembly 21 and is connected to the main shaft 1 through gears, belts, chains, etc. The design of the driving wheel 22 must ensure that it can transmit sufficient power to push the steel strand to pass through the prestressed corrugated pipe; therefore, the driving wheel 22 needs to be made of a highly wear-resistant material, and the connection with the transmission main shaft 1 must be precise and firm.

[0085] Furthermore, the driving gear 23 is coaxially arranged with the driving wheel 22 and is in meshing state with the reduction gear 24. In the present embodiment, the coordinated use of the driving gear 23 and the reduction gear 24 can realize the deceleration control of the rotation speed of the driving wheel 22, thereby adjusting the squeezing and pushing speed of the steel strands as required. Through the mechanical deceleration mechanism of the present embodiment, the speed of the steel strands threading can be more accurately controlled, ensuring adaptability and flexibility under different conditions.

[0086] Furthermore, the pushing device 25 is installed on one side of the reduction gear 24, and is designed with an annular groove 251 for pushing the steel strand. The shape and size of the annular groove 251 match the diameter of the prestressed steel strand, which can ensure the stable grasping and pushing of the steel strand. The pushing device 25 can be wheel-shaped or other shapes suitable for pushing the steel strand. Its surface treatment and material selection need to optimize the friction during the pushing process to ensure effective pushing of the steel strand without damaging the steel strand.

[0087] Furthermore, a plurality of bite openings 2510 may be provided on the annular groove 251, and the bite openings 2510 are provided in an annular shape and distributed on the inner surface of the annular groove 251. The function of these bite openings 2510 is to increase the bite thrust of the annular groove 251 on the steel strands. When designing, the size, shape and arrangement of the bite openings 2510 need to be carefully calculated to ensure that sufficient thrust is generated on the steel strands during the threading process without causing damage to the surface of the steel strands. The design of the bite openings 2510 should also facilitate the steel strands to enter quickly but not easily come out during squeezing and pushing, so as to ensure the continuity and stability of the squeezing and pushing process.

[0088] The benefit of this embodiment is that the prestressed steel strand integral bundle threading device will be able to achieve fast and continuous steel strand bundle threading operations, effectively reducing delays and operational difficulties caused by steel strand clamping or increased bundle threading resistance. The design of this embodiment fully utilizes the advantages of mechanical transmission principles and modern engineering materials, providing a solution that is both efficient and stable, and is suitable for prestressed concrete bridges and other engineering projects that require bundle threading operations.

[0089] Embodiment 3

[0090] refer to Figures 7 to 9 As shown, based on the second embodiment, this embodiment further optimizes the squeezing and pushing device 25 in the prestressed steel strand integral bundle threading device, specifically by introducing two extrusion bodies 252 to improve the efficiency and reliability of bundle threading. In this improved implementation, the design and configuration of the squeezing and pushing device 25 improves the bundle threading operation performance and efficiency.

[0091] Specifically, in this embodiment, the squeezing and pushing device 25 uses two relatively matched extrusion bodies 252 to achieve a more stable and uniform steel strand squeezing and pushing force. One extrusion body 252 is fixedly mounted on one side of the reduction gear 24, and is responsible for transmitting the rotational force to the other extrusion body 252 through the ring gear 2520, while the other extrusion body 252 is rotatably mounted in the shell assembly 21. This configuration allows the two extrusion bodies 252 to form a clamping and pushing effect on the steel strand during relative rotation.

[0092] Furthermore, one end of each of the two extrusion bodies 252 is designed with an annular groove 251 that adapts to the shape of the steel strand, so as to stabilize the steel strand and apply thrust to it during the bundle threading operation. The design of the extrusion body 252 needs to be precisely manufactured according to the diameter and elastic properties of the steel strand to ensure that uniform and sufficient pressure can be provided when clamping the steel strand.

[0093] Furthermore, the design of the annular groove 251 needs to adapt to the size of the steel strand and not damage the surface of the steel strand during the squeezing and pushing process. At the same time, combined with the records in Example 2, it can be seen that a plurality of bite openings 2510 are provided on the annular groove 251 to enhance the bite thrust of the squeezing and pushing device 25 on the steel strand, ensuring that the steel strand will not fall off easily when subjected to lateral force, and at the same time being able to cope with different resistances encountered during the bundle threading operation and provide stable thrust.

[0094] Furthermore, the gear ring 2520 at the other end of the extrusion body 252 is a transmission element in the extrusion device 25. The two gear rings 2520 are meshingly connected, ensuring that the two extrusion bodies 252 can operate synchronously during the mutual meshing process. This synchronous operation ensures the uniform distribution of the extrusion force, thereby avoiding uneven tension and possible damage to the steel strands, and also improves the overall performance of the bundle threading device.

[0095] Furthermore, the design of the entire squeezing and pushing system also needs to take into account durability and maintainability. Transmission components such as the ring gear 2520 need to be made of wear-resistant materials and have an easily replaceable design so that they can be quickly repaired after long-term use or accidental damage, thereby minimizing operational downtime.

[0096] The prestressed steel strand integral bundle threading device of the present embodiment realizes continuous and uniform squeezing and pushing of steel strands through two synchronous extrusion bodies 252, greatly improving the efficiency and reliability of the bundle threading operation; in addition, the addition of the bite mouth 2510 further enhances the squeezing and pushing force, making the entire bundle threading operation smoother, while reducing the problem of inconsistent tension of steel strands caused by uneven bundle threading of steel strands; the present embodiment has a sophisticated design and is easy to operate, which meets the high efficiency and high quality requirements for prestressed strand threading operations in modern bridge construction.

[0097] Embodiment 4

[0098] refer to Figure 6 , Figure 7 and Fig. 9 As shown, based on the second embodiment, this embodiment further improves the structure of the prestressed steel strand integral bundle threading device, which is mainly reflected in that a guide portion 211 is newly added to the shell assembly 21. The guide portion 211 is designed with a guide hole 2110 and is equipped with a bell mouth at one end, which is the feeding end of the steel strand. This improvement is aimed at the guiding problem of the steel strand when entering the bundle threading component 2 during the bundle threading operation, and aims to improve the accuracy, convenience and efficiency of the bundle threading.

[0099] In this embodiment, the guide portion 211 on the shell assembly 21 is an optimized design feature, which provides path guidance and support for the feeding of the steel strand. The design of the guide portion 211 must not only be firmly combined with the shell assembly 21, but also ensure that the guide hole 2110 opened therein can accurately align the steel strand and the annular groove 251 in the bundle-threading component 2; it can be understood that the guide portion 211 can also be designed as an integral part with the shell assembly 21 to save processing and assembly processes.

[0100] Furthermore, the inner diameter of the guide hole 2110 is designed according to the outer diameter of the steel strand, leaving appropriate room to avoid severe friction during the movement of the steel strand, but maintaining an appropriate guiding effect to ensure that the steel strand smoothly enters the annular groove 251 along the set path. In order to improve the bundle threading efficiency, a bell mouth is designed at one end of the guide hole 2110. This gradually widening structure helps to guide the steel strand to easily penetrate the bundle threading component 2 even when the angle is not very accurate.

[0101] Furthermore, the design focus of the bell mouth is on the gradual expansion of its opening angle and diameter, which can accommodate and correct the steel strands entering from different angles, reduce the requirements for accurate alignment of the steel strands with the bundle threading device during operation, and thus significantly reduce the complexity of the process and labor intensity; in addition, the surface of the bell mouth needs to be smoothed to prevent the steel strands from being scratched or entangled during the entry process.

[0102] When performing the prestressed steel strand bundling operation, the operator aligns one end of the steel strand with the bell-shaped mouth, and then the steel strand can easily slide into the annular groove 251 along the guide hole 2110. The annular groove 251 and the pushing device 25 further push the steel strand into the prestressed corrugated tube, and the multiple bite openings 2510 ensure that there is sufficient continuous thrust on the steel strand during the bundling process. The bundling device designed in this way significantly improves the applicability and work efficiency of the device, especially in a narrow working environment or inconvenient vision. The bell-shaped mouth can greatly reduce the difficulty of introducing the steel strand and optimize the entire bundling workflow.

[0103] By combining multiple improved features, while ensuring the stability of steel strand transportation, this embodiment also enhances the ability of the present invention to adapt to different working environments, and effectively improves the overall performance and operational flexibility of the prestressed steel strand integral bundle threading device.

[0104] Embodiment 5

[0105] refer to Figure 6 , Figure 7 and Fig. 9 As shown, on the basis of the third embodiment, for the prestressed steel strand integral bundle threading device, this embodiment optimizes and newly adds an adjustment component 4. The function of the adjustment component 4 of this embodiment is to adjust the spacing between the two annular grooves 251 according to the steel strands of different diameters. Such a design can make the bundle threading component 2 adapt to steel strands of different specifications, increase the versatility and adaptability of the equipment, and at the same time reduce the dependence on the specific steel strand size, further improving work efficiency.

[0106] In this embodiment, the adjustment component 4 can adopt a variety of different adjustment mechanisms, such as pneumatic adjustment, hydraulic adjustment or elastic adjustment, etc. Those skilled in the art can adopt the following specific working principles for these different adjustment mechanisms:

[0107] 1. Pneumatic adjustment: A cylinder or other pneumatic drive element is used to adjust the distance between the two extrusion bodies 252. By controlling the air pressure entering the cylinder, the cylinder piston rod can be extended and retracted according to the required spacing of the ring grooves 251, so that the extrusion bodies 252 move relative to each other and the spacing of the ring grooves 251 can be quickly adjusted. The pneumatic adjustment system must be equipped with accurate air pressure control and a stable air source supply to ensure the continuity and repeatability of the adjustment.

[0108] 2. Hydraulic adjustment: If the spacing of the annular grooves 251 is adjusted hydraulically, the pressure generated by the hydraulic pump is transmitted through the hydraulic cylinder. The telescopic length of the hydraulic cylinder piston is adjusted by changing the pressure and flow direction of the hydraulic oil, thereby adjusting the position of the extrusion body 252. The advantage of the hydraulic system is that it can provide a larger adjustment torque, which is suitable for large-diameter or high-tension steel strands. The hydraulic system requires a precise control system to ensure fine adjustment of the spacing of the annular grooves 251.

[0109] 3. Elastic adjustment: For the elastic adjustment mechanism, elastic elements are used to absorb or provide additional force so as to automatically adjust the distance between the two extrusion bodies 252 when the diameter of the steel strand changes. The preset tension or stiffness of the elastic element is calculated and selected based on the possible range of steel strand diameters to ensure rapid self-adaptation when switching between steel strands of different diameters.

[0110] Regardless of the adjustment method used, the key is to ensure the accuracy and stability of the adjustment component 4. The adjustment component 4 may also include a sensor to monitor the current spacing of the annular groove 251 and compare it with the set value. The system can automatically adjust through feedback control signals to ensure that the spacing of the annular groove 251 is always in the best state.

[0111] Furthermore, the adjustment component 4 should be designed to be easy to operate and maintain. It can be adjusted by a manual knob or by remote control through an automated control system. The automated control system can calculate the required spacing of the annular groove 251 based on program presets or the steel strand diameter data input by the operator, and automatically complete the adjustment work.

[0112] In this embodiment, the addition of the adjustment component 4 makes the overall bundle threading device of the prestressed steel strand more suitable for rapid adjustment under field conditions. By accurately controlling the spacing of the annular grooves 251, it can ensure that the steel strands are always in the optimal stress state during the squeezing and pushing process, thereby not only improving the construction speed and reducing the construction difficulty, but also improving the accuracy and reliability of the bundle threading operation, thereby ensuring the installation quality of the prestressed steel strands.

[0113] Embodiment 6

[0114] refer to Fig. 9 and Fig.10As shown, on the basis of Example 5, in order to save production and use costs, the present invention chooses to use an elastic adjustment mechanism. This embodiment further refines the specific implementation method of the adjustment component 4 in the prestressed steel strand integral bundle threading device; specifically, the adjustment component 4 is to achieve precise adjustment of the position of the extrusion body 252 through the interaction of the adjustment plate 41, the adjustment bolt 42 and the compression spring 43, and then adjust the spacing between the two annular grooves 251 to adapt to steel strands of different diameters; in addition, the introduction of the height limit of the gear ring 2520 is to ensure that under the action of pressure, even if the compression spring 43 is deformed, the structure still maintains a stable meshing state, thereby avoiding adjustment failure caused by deformation of the compression spring 43.

[0115] Furthermore, the adjustment plate 41 is hinged on the shell assembly 21, and an extrusion body 252 is rotatably mounted on the adjustment plate 41. Such a design allows the extrusion body 252 to gradually move around its rotation axis under the guidance of the adjustment plate 41, and such movement is directly related to the spacing adjustment of the two annular grooves 251. The hinge method of the adjustment plate 41 must ensure its stability and flexibility so that the adjustment action of the extrusion body 252 can be carried out smoothly.

[0116] Furthermore, one end of the adjusting bolt 42 passes through the adjusting plate 41 and is fixed on the shell assembly 21. This structure forms an adjustable fulcrum. By rotating the adjusting bolt 42, the adjusting plate 41 can be tilted within a specific range relative to the shell assembly 21, thereby changing the relative position of the extrusion body 252 and then adjusting the spacing of the annular groove 251. The structure of the adjusting bolt 42 must maintain good wear resistance to ensure reliability in long-term use.

[0117] Furthermore, in order to cooperate with the adjusting bolt 42, a compression spring 43 is arranged between the adjusting bolt 42 and the adjusting plate 41 to provide pressure to ensure the stability of the adjusting plate 41. The stiffness and preload of the compression spring 43 need to be designed according to the maximum pressure that may occur during construction to avoid failure or excessive deformation during the adjustment process. The design of the compression spring 43 also needs to ensure flexibility and response speed during adjustment to ensure rapid adjustment during switching of steel strands of different diameters.

[0118] Furthermore, the structure of the ring gear 2520 is the key to maintaining the stability of the adjustment component 4. Specifically, the tooth height of the ring gear 2520 is greater than the maximum deformation that may occur to the compression spring 43. This ensures that even when the compression spring 43 is stretched to its limit state, the ring gear 2520 can remain engaged, thereby avoiding sudden displacement of the adjustment plate 41 or unexpected changes in the position of the extrusion body 252, thereby ensuring the reliability and safety of the adjustment process. This structural design takes into account extreme situations in actual operation and prevents adjustment failures by providing a tooth height that is greater than the deformation.

[0119] During operation, the extrusion body 252 moves according to the required steel strand diameter, and with the slight tilt change of the adjustment plate 41, the precise adjustment of the distance between the two annular grooves 251 is achieved; in this process, the compression spring 43 provides the necessary pressure and reaction force to ensure the smooth progress of the adjustment process; through the adjustment mechanism designed in this embodiment, the prestressed steel strand integral bundle threading device has a high degree of adaptability and reliability, which greatly improves the efficiency of engineering construction.

[0120] Embodiment 7

[0121] refer to Figure 1 and Fig.11 As shown, according to the description of Example 1, the design of the prestressed steel strand integral bundle threading device already includes the insertion, guiding and squeezing and pushing of the steel strands by the bundle threading component 2. In order to solve the complex process problem of workers manually cutting the steel strands after bundling, this embodiment further supplements several other components of the device of the present invention, including a cutting machine 5, a coupling 6 separable from the main shaft 1, and a transmission assembly 7. These added features enable the prestressed steel strand integral bundle threading device to directly cut the steel strands at the outlet after installing the prestressed steel strands, thereby improving the automation level and construction efficiency of the entire device.

[0122] Specifically, a cutter 5 is provided at the wire outlet of the bundle-threading component 2 so that after the steel strand is pushed through the bundle-threading component 2, it can be quickly and accurately cut to the required length. The design of the cutter 5 needs to take into account the speed and accuracy of the cutting process to ensure that the cut surface is smooth and the impact on the mechanical properties of the steel strand is minimized. The cutter 5 can use a high-speed rotating blade, grinding wheel or other suitable hard materials.

[0123] Furthermore, the function of the coupling 6 is to transmit the rotational power of the output shaft of the power device to the cutter 5, so that the cutter 5 can perform the cutting action after obtaining the power. The coupling 6 is designed to be separable from the main shaft 1. This design also provides convenience during equipment maintenance, repair of the cutter 5 or replacement of tools; for example, when the blade of the cutter 5 needs to be sharpened or replaced, the coupling 6 can be conveniently combined with the main shaft 1, so that the cutter 5 stops working for corresponding maintenance work.

[0124] Furthermore, the transmission assembly 7 is the part connecting the coupling 6 and the cutting machine 5, and is responsible for transmitting power from the coupling 6 to the cutting machine 5. The transmission assembly 7 can be a gear transmission, a chain transmission, a belt transmission or other forms of mechanical transmission devices. When selecting the type of the transmission assembly 7, factors such as transmission efficiency, easy maintenance and tolerable transmission torque should be considered. The design of the transmission assembly 7 should ensure that a stable transmission effect can be maintained under high loads and a low wear rate can be maintained during long-term use.

[0125] Furthermore, when the cutting action begins, the rotational force of the output shaft of the power device is transmitted to the driving mechanism of the cutting machine 5 through the coupling 6 and the transmission assembly 7. It should be noted that at this time, the coupling 6 and the main shaft 1 have been separated, and the main shaft 1 no longer rotates, thereby stopping the transportation of the steel strand to prepare for the cutting work; then, the coupling 6 drives the cutting machine 5 to cut the steel strand through the transmission assembly 7. The linked power transmission process of this embodiment should be designed to be both efficient and reliable to ensure that each cut can be completed accurately during continuous operation.

[0126] The benefit of this embodiment is that the automated design significantly improves the efficiency and accuracy of the prestressed steel strand threading process, reduces the need for manual operation, and at the same time, the safety, stability, and maintenance convenience of the entire equipment are also enhanced.

[0127] Embodiment 8

[0128] refer to Figure 4 and Figure 5 As shown, in the prestressed steel strand integral bundle threading device recorded in Example 7, the design of the coupling 6 is the core component to ensure the efficiency and flexibility of power transmission, and also supports the efficient operation of the cutting machine 5; in the specific implementation, the coupling 6 includes a base 61, a mounting cylinder 62, a clutch shaft 63 and a spring 64, which together constitute a controllable connection mechanism that can transmit the rotational power output by the power device to the cutting machine 5.

[0129] Furthermore, the base 61 of the coupling 6 is installed at the end of the output shaft of the power device. This base 61 is the basis for the combination of the coupling 6 and the power device. Its design must ensure sufficient rigidity and strength to stably support the structure of the entire coupling 6 and enable it to withstand the power impact and torsional load transmitted from the power device.

[0130] Furthermore, a mounting tube 62 is provided on the base 61. This cylindrical structure is responsible for supporting and guiding the movement of the clutch shaft 63. Ear grooves 621 are provided on the side walls of the mounting tube 62. These ear grooves 621 correspond to the limiting columns 631 installed at one end of the clutch shaft 63, and play the role of guiding the limiting columns 631 to slide and driving the main shaft 1 to rotate, while allowing the clutch shaft 63 to slide axially in the tube.

[0131] Furthermore, the clutch shaft 63 is slidably installed inside the mounting cylinder 62. When power needs to be transmitted, the clutch shaft 63 reaches a connected state through dynamic cooperation with the mounting cylinder 62, thereby realizing power transmission. The setting of the limit column 631 ensures that the clutch shaft 63 will not escape from the mounting cylinder 62 during rotation. At the same time, the sliding of the limit column 631 in the ear groove 621 can be used as a mechanical signal to prompt the operator of the engagement or disengagement state of the clutch.

[0132] Furthermore, a spring 64 is arranged between the base 61 and the clutch shaft 63 to generate a thrust to push the clutch shaft 63 into the main shaft 1. In a specific implementation, a keyway is provided at the end of the main shaft 1, and a spline is provided at the end of the clutch shaft 63. At the same time, it is necessary to consider the smoothness of the spline entering the keyway. The preferred approach is to provide rounded corners at the keyway port and the end of the spline. The application of the spring 64 not only provides a simple and effective operating means, but also utilizes its restoring force to maintain the stability of the clutch shaft 63 and the main shaft 1 in the connected state.

[0133] Through the design of this embodiment, the operator can separate the coupling 6 from the main shaft 1 by pulling the cutting machine 5, so that the torque of the output shaft of the power device is transmitted to the transmission assembly 7, thereby driving the cutting machine 5 to work; and when the cutting machine 5 stops working, the action of the spring 64 can make the clutch shaft 63 automatically return to the main shaft 1, and then prepare for the next bundle threading. Such a design not only improves the degree of automation of the prestressed steel strand bundle threading device, but also makes the design of the coupling 6 reduce the mechanical complexity of the equipment, increase the operability of the equipment and the safety during maintenance.

[0134] Embodiment 9

[0135] refer to Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, the key to the design of the transmission assembly 7 of the prestressed steel strand integral bundle threading device in Example 8 is to provide a reliable and accurate power transmission path to achieve precise operation of the cutting machine 5. In this embodiment, the transmission assembly 7 includes a plurality of mechanical elements that cooperate with each other to ensure smooth transfer of power from the power device to the cutting machine 5.

[0136] Furthermore, the linkage frame 71 is a switch in the transmission assembly 7, which is rotatably connected to the clutch shaft 63 through a bearing. This design enables the linkage frame 71 to rotate without following the clutch shaft 63, thereby not affecting the stable operation of other components. The use of bearings can reduce friction during rotation; the linkage frame 71 is slidably connected to the frame body of the beam-threading device to ensure that it slides within a certain range without rotating to adapt to the system's action requirements. The cutting machine 5 is connected to the linkage frame 71 through a cable 72. This method provides a flexible guiding force transmission path, so that when the cutting machine 5 is pulled, the action can be transmitted to the linkage frame 71 through the cable 72, thereby realizing the disengagement of the clutch shaft 63 and the main shaft 1, and then realizing the clutch disk 73 and the drive disk 74 in close contact transmission.

[0137] Furthermore, the clutch disc 73 is installed on the clutch shaft 63 and can be detachably connected to the drive disc 74. The drive disc 74 is rotatably installed on the frame of the bundle-threading device. Such an arrangement facilitates the smooth transmission of power and maintenance of the equipment. When power is transmitted from the clutch shaft 63 to the drive disc 74, the first bevel gear 77 is driven to rotate through the drive disc 74, and finally the cutting machine 5 is driven to work.

[0138] Furthermore, in order to complete the required power conversion and transmission, the transmission assembly 7 uses a transmission wheel system, including a first driving wheel 75 and a first driven wheel 76. The first driving wheel 75 is coaxial with the driving disk 74, and is connected to the first driven wheel 76 through a transmission element such as a transmission belt or chain. This arrangement can stably transmit power to the subsequent transmission wheel system, and adjust the speed and torque through the gear transmission ratio to meet different cutting requirements.

[0139] Furthermore, the meshing of the first bevel gear 77 and the second bevel gear 78 and their coaxial design allow a right-angle conversion so that power can be transferred from an axial direction to a vertical direction. The first bevel gear 77 is coaxial with the first driven wheel 76, and the second bevel gear 78 is meshed therewith. Through this right-angle meshing, the spatial power transmission direction can be changed.

[0140] Furthermore, the final transmission link involves the second driving wheel 79 and the second driven wheel 710 on the cutting machine 5. The second driving wheel 79 is coaxial with the second bevel gear 78 and is connected to the second driven wheel 710 installed on the cutting machine 5 through certain transmission elements, such as a transmission belt or chain. This power transfer ensures that the cutting machine 5 obtains sufficient power and can also adjust the cutting speed as needed.

[0141] Through the coordinated work of the above-mentioned transmission assembly 7, the cutting operation of the prestressed steel strand bundle threading device can be automated and precisely controlled. The complex power path design from the output shaft of the power device to the cutting machine 5 ensures that sufficient power can be transmitted while maintaining the accuracy and stability of the operation, which greatly improves the work efficiency and cutting quality of the prestressed steel strand bundle threading and cutting. The design of this embodiment takes into account the power transmission efficiency, the simplification of the mechanical structure and the convenience of maintenance, thereby obtaining an efficient, reliable and easy-to-maintain prestressed steel strand cutting device.

[0142] Embodiment 10

[0143] refer to Figure 1 , Figure 2 and Figure 6 As shown, in this embodiment, the structural features of the guide assembly 3 are specifically detailed. The design of the guide assembly 3 is intended to ensure the smooth guidance and accurate output of the prestressed steel strands, and cooperate with the power transmission assembly of the overall device to achieve continuous and efficient threading operations. In this embodiment, the guide assembly 3 is responsible for guiding the steel strands to smoothly pass through the entire bundle threading device, and aggregate and export the steel strands into the prestressed corrugated pipe.

[0144] Specifically, the guide assembly 3 is composed of a plurality of guide tubes 31, each of which is installed at the end of a preset guide hole 2110. The guide tubes 31 finally converge at an outlet flange 32. The guide tubes 31 not only provide guidance for the steel strands coming out of the bundle-threading component 2, but also prevent the steel strands from bending or being damaged when passing through. The design of the outlet flange 32 can ensure the straightness and tension of the steel strands during the passage, while reducing friction and serving as an interface for transferring the force of the steel strands.

[0145] Furthermore, a gathering port 33 is installed on the outer side of the outlet flange 32. The gathering port 33 is provided to integrate the steel strands that are dispersedly passed through the guide tube 31 together, so as to facilitate subsequent operations or serve as the starting point of the next process. The size and shape of the gathering port 33 are designed to adapt to the overlapping arrangement of multiple steel strands at the end of the bundle threading device, while also ensuring that no compression or deformation is caused to the steel strands.

[0146] Furthermore, during the passage of the prestressed steel strands, the guide assembly 3 ensures that each steel strand can be transported from the bundle-threading component 2 through the guide tube 31 to the outlet flange 32 according to a predetermined path, and then smoothly transition to the aggregation port 33 through the outlet flange 32, and finally pass out as a whole. This transition design from dispersion to concentration not only improves the efficiency of prestressed steel strand installation during use, but also ensures the smoothness and safety of the steel strands during the outlet process by optimizing the design of the steel strand outlet, reduces the problem of steel strand entanglement or knotting that may occur during the bundle threading process, and improves the accuracy and reliability of the bundle threading work.

[0147] The benefit of this embodiment is that while ensuring efficient operation, it also greatly reduces the construction risks that may be caused by misalignment or improper overlap. Through the design of this embodiment, the guide component 3 of the prestressed steel strand bundle threading device can stably and predictably guide the steel strands to be bundled into the prestressed corrugated pipe. Whether in the scenario of single bundle threading or aggregation of multiple steel strands, the system can provide excellent results, ensuring the effective transportation of prestressed steel strands, and thus ensuring the quality and efficiency of prestressed concrete structure construction.

[0148] The beneficial effects of the present invention are specifically embodied in that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prestressed steel strand integral bundle threading device, characterized in that: The bundle-threading device comprises: a main shaft (1) connected to the output shaft of the power device; and a plurality of bundle-threading components (2) respectively connected to the main shaft (1); the plurality of bundle-threading components (2) are linearly arranged in sequence, and a guide assembly (3) for gathering a plurality of steel strands is provided at one end of the wire output; The beam threading device further comprises: a cutter (5) arranged at the wire outlet of the beam threading component (2); a coupling (6) detachably pluggable with the main shaft (1); and a transmission assembly (7) for transmitting power from the coupling (6) to the cutter (5); The coupling (6) comprises: a base (61) mounted on the output shaft of the power device; a mounting tube (62) mounted on the base (61), the side wall of the mounting tube (62) being provided with an ear groove (621); a clutch shaft (63) slidably mounted in the mounting tube (62), a limiting column (631) being mounted on one end of the clutch shaft (63) located in the mounting tube (62), the limiting column (631) sliding in the ear groove (621); and a spring (64) abutting between the base (61) and the clutch shaft (63); The transmission assembly (7) comprises: a linkage frame (71), the linkage frame (71) being rotatably connected to the clutch shaft (63) via a bearing, the linkage frame (71) being slidably connected to a frame body of the beam threading device, and the cutting machine (5) being connected to the linkage frame (71) via a cable (72); a clutch disk (73), the clutch disk (73) being fixed on the clutch shaft (63); a driving disk (74), the driving disk (74) being rotatably mounted on the frame body of the beam threading device, the clutch disk (73) being detachably connected to the driving disk (74); and a first driving wheel (75), the first driving wheel (75) being connected to the clutch shaft (63) and the driving disk (74) being detachably mounted on the frame body of the beam threading device. The cutting machine (5) comprises a first driven wheel (76), the first driven wheel (76) being transmission-connected to the first driving wheel (75); a first bevel gear (77), the first bevel gear (77) being coaxial with the first driven wheel (76); a second bevel gear (78), the second bevel gear (78) being meshingly connected with the first bevel gear (77); and a second driving wheel (79), the second driving wheel (79) being coaxial with the second bevel gear (78), and the second driving wheel (79) being transmission-connected to a second driven wheel (710) mounted on the cutting machine (5).

2. The prestressed steel strand integral bundle threading device according to claim 1 is characterized in that: The bundle-threading component (2) comprises: a housing assembly (21); a driving wheel (22) rotatably mounted in the housing assembly (21), the driving wheel (22) being transmission-connected to the main shaft (1); a driving gear (23) coaxially arranged with the driving wheel (22); a reduction gear (24) meshing with the driving gear (23); and a pushing device (25) mounted on one side of the reduction gear (24), the pushing device (25) being provided with an annular groove (251) for pushing the steel strand; and a plurality of engaging openings (2510) being annularly opened on the annular groove (251).

3. The prestressed steel strand integral bundle threading device according to claim 2, characterized in that: The extrusion device (25) comprises two extrusion bodies (252); one of the extrusion bodies (252) is mounted on one side of the reduction gear (24), and the other extrusion body (252) is rotatably mounted in the housing assembly (21); the annular grooves (251) are respectively formed at one end of the two extrusion bodies (252), and a gear ring (2520) is provided at the other end of the extrusion body (252), and the two gear rings (2520) are meshingly connected.

4. The prestressed steel strand integral bundle threading device according to claim 2, characterized in that: The housing assembly (21) is provided with a guide portion (211), the guide portion (211) is provided with a guide hole (2110), the annular groove (251) is located in the guide hole (2110), and a bell mouth is provided at one end of the guide hole (2110).

5. The prestressed steel strand integral bundle threading device according to claim 3, characterized in that: The bundle-threading component (2) is also provided with an adjustment component (4) for adjusting the distance between the two annular grooves (251) to accommodate steel strands of different diameters.

6. The prestressed steel strand integral bundle threading device according to claim 5, characterized in that: The adjustment component (4) comprises: an adjustment plate (41) hinged on the housing component (21), wherein one of the extrusion bodies (252) is rotatably mounted on the adjustment plate (41); an adjustment bolt (42) one end of which passes through the adjustment plate (41) and is fixed on the housing component (21); and a compression spring (43) abutting between the other end of the adjustment bolt (42) and the adjustment plate (41); the tooth height of the gear ring (2520) is greater than the deformation amount of the compression spring (43).

7. The prestressed steel strand integral bundle threading device according to claim 4, characterized in that: The guide assembly (3) comprises a plurality of guide tubes (31) mounted at the ends of the guide holes (2110), the ends of the guide tubes (31) being provided with outlet flanges (32), and a convergence port (33) being mounted on a side of the outlet flanges (32) away from the guide tubes (31).

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