A prefabricated beam steel strand threading device

Abstract

The utility model discloses a prefabricated beam steel strand passes through the device, belongs to road and bridge construction technical field, including mobile platform, elevating assembly and pass through the subassembly, elevating assembly is fixed on the mobile platform, pass through the subassembly and is fixed on elevating assembly, pass through the subassembly includes the installation frame and the auxiliary cylinder that is arranged up and down in the installation frame, the driving cylinder, and steel strand is located between auxiliary cylinder and driving cylinder, the both ends of auxiliary cylinder are connected up and down through adjusting lever and installation frame slide, and auxiliary cylinder is adjusted through adjusting lever and the distance between driving cylinder. The utility model can adjust the overall height of pass through the subassembly, can adjust the distance of auxiliary cylinder and driving cylinder, can adapt to the steel strand of different diameter, can avoid the steel strand slipping on driving cylinder simultaneously, when adjusting good auxiliary cylinder, through the rotation of driving cylinder, the steel strand output completes pass through the subassembly.

Description

Technical Field

[0001] This utility model belongs to the field of road and bridge construction technology, and in particular relates to a device for threading precast beam steel strands. Background Technology

[0002] The threading of steel strands in prestressed beams is a key step in prestressed construction. Its core purpose is to apply prestress to the concrete by tensioning the prestressing tendons, thereby counteracting the tensile stress generated by the load and improving the load-bearing capacity and crack resistance of the structure.

[0003] For shorter steel strands, manual threading can be used, while longer steel strands require threading machines or winches for assistance. Since precast beams have multiple channels at different heights for threading steel strands, existing threading machines are not convenient for height adjustment and cannot flexibly adapt to different diameter steel strands for threading different precast beams.

[0004] Therefore, a precast beam steel strand threading device is needed to flexibly adjust and adapt to steel strands of different diameters. Utility Model Content

[0005] The purpose of this invention is to provide a precast beam steel strand threading device to solve the problems existing in the background art.

[0006] The objective of this utility model is achieved through the following technical solution: A precast beam steel strand threading device includes a moving platform, a lifting assembly, and a threading assembly, wherein the lifting assembly is fixed on the moving platform and the threading assembly is fixed on the lifting assembly; The threading assembly includes an installation frame and auxiliary rollers and a drive roller arranged vertically within the installation frame, with the steel strand located between the auxiliary rollers and the drive roller. The two ends of the auxiliary roller are slidably connected to the mounting frame via adjusting rods, and the distance between the auxiliary roller and the active roller is adjusted by the adjusting rods.

[0007] Furthermore, the mounting frame includes a base plate, support columns, and a top plate. The four support columns are located at the four corners of the base plate and fixed to the four corners of the top plate. The base plate is fixed to the lifting assembly.

[0008] Furthermore, the active roller has first mounting plates at both ends of its shaft, and the active roller is rotatably connected to the first mounting plates via bearing assemblies. The first mounting plates are fixed to the support columns. A rotating motor is provided on one side of the first mounting plate of the active roller, and the output shaft of the rotating motor is connected to the shaft of the active roller.

[0009] Furthermore, the auxiliary roller has second mounting plates at both ends of its shaft, and the auxiliary roller is rotatably connected to the second mounting plates via bearing assemblies. The bottom end of the adjusting rod is fixed to the upper end of the second mounting plate, and the other end of the adjusting rod passes through the top plate. The adjusting rod is a screw rod, and a threaded nut is provided above the top plate on the adjusting rod.

[0010] Furthermore, the lifting assembly adopts a worm gear lifting mechanism or a telescopic cylinder.

[0011] Furthermore, a column is provided on one side of the support column, and the column is provided with a slot in the direction corresponding to the support column. The support column is provided with a slider that slides in cooperation with the slot of the column.

[0012] Furthermore, one end of the steel strand is fitted with a bullet-shaped rubber sleeve.

[0013] The beneficial effects of this utility model are: 1) The overall height of the threading assembly can be adjusted by the lifting assembly, so that the subsequent steel strands can be aligned with the precast beam ducts to be threaded.

[0014] 2) When it is necessary to thread the steel strand, place the steel strand between the drive roller and the auxiliary roller. The auxiliary roller can be pressed down on the steel strand by adjusting the rod. Adjusting the distance between the auxiliary roller and the drive roller can accommodate steel strands of different diameters and prevent the steel strand from slipping on the drive roller. After the auxiliary roller is adjusted, the steel strand is output by the rotation of the drive roller to complete the threading. Attached Figure Description

[0015] Figure 1 This is a side view of a precast beam steel strand threading device according to the present invention; Figure 2 This is a front view of a precast beam steel strand threading device according to the present invention; In the diagram, 1-moving platform, 2-lifting assembly, 3-threading assembly, 31-base plate, 32-support column, 33-top plate, 34-active roller, 35-first mounting plate, 36-rotating motor, 37-auxiliary roller, 38-second mounting plate, 39-adjusting rod, 310-nut, 311-slider, 4-steel strand, 5-bullet-shaped rubber sleeve, 6-column. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] See Figures 1-2 This utility model provides a technical solution: like Figures 1-2 As shown, a precast beam steel strand threading device includes a mobile platform 1, a lifting assembly 2, and a threading assembly 3. The lifting assembly 2 is fixed on the mobile platform 1, and the threading assembly 3 is fixed on the lifting assembly 2. The threading assembly 3 includes an installation frame and an auxiliary roller 37 and an active roller 34 arranged vertically within the installation frame, with the steel strand 4 located between the auxiliary roller 37 and the active roller 34. The two ends of the auxiliary roller 37 are slidably connected to the mounting frame via adjusting rods 39, and the distance between the auxiliary roller 37 and the active roller 34 is adjusted by the adjusting rods 39.

[0018] Through the above technical solution, the threading assembly 3 can be quickly arranged by the mobile platform 1, and the overall height of the threading assembly 3 can be adjusted by the lifting assembly 2, so that the subsequent steel strands 4 can be aligned with the precast beam ducts to be threaded. When the steel strands 4 need to be threaded, the steel strands 4 are placed between the active roller 34 and the auxiliary roller 37. The auxiliary roller 37 can be pressed down on the steel strands 4 by the adjusting rod 39. Adjusting the distance between the auxiliary roller 37 and the active roller 34 can accommodate steel strands 4 of different diameters and prevent the steel strands 4 from slipping on the active roller 34. After the auxiliary roller 37 is adjusted, the steel strands 4 are output by the rotation of the active roller 34 to complete the threading.

[0019] Furthermore, the mounting frame includes a base plate 31, support columns 32 and a top plate 33. The four support columns 32 are located at the four corners of the base plate 31 and fixed to the four corners of the top plate 33. The base plate 31 is fixed to the lifting assembly 2.

[0020] Through the above technical solution, the installation frame is a cubic frame structure, with the base plate 31 and top plate 33 connected by support columns 32. The support columns 32 also support the active roller 34 and auxiliary roller 37 located within the installation frame. The entire installation frame is raised and lowered via the lifting assembly 2. The lifting assembly 2 employs a worm gear lifting mechanism or a telescopic cylinder. In this embodiment, the lifting assembly 2 uses a worm gear lifting mechanism, which can smoothly raise or lower the entire installation frame.

[0021] Furthermore, a column 6 is provided on one side of the support column 32, and the column 6 is provided with a slot in the direction corresponding to the support column 32. The support column 32 is provided with a slider 311 that is slidably engaged with the slot of the column 6.

[0022] When the entire installation frame is raised and lowered by the lifting component 2, the sliding block 311 cooperates with the slot of the column 6, allowing the installation frame to slide along the slot of the column 6, preventing the installation frame from tilting, and the column 6 plays a certain role in limiting and supporting it.

[0023] Furthermore, the active roller 34 has first mounting plates 35 at both ends of the roller shaft. The active roller 34 is rotatably connected to the first mounting plate 35 through a bearing assembly. The first mounting plate 35 is fixed to the support column 32. A rotating motor 36 is provided on the first mounting plate 35 on one side of the active roller 34. The output shaft of the rotating motor 36 is connected to the roller shaft of the active roller 34.

[0024] Through the above technical solution, the active roller 34 is fixed on the mounting frame by the first mounting plate 35. The active roller 34 is driven to rotate by the rotating motor 36, thereby driving the steel strand 4 to be conveyed.

[0025] Furthermore, the auxiliary roller 37 has second mounting plates 38 at both ends of its roller shaft. The auxiliary roller 37 is rotatably connected to the second mounting plate 38 via a bearing assembly. The bottom end of the adjusting rod 39 is fixed to the upper end of the second mounting plate 38. The other end of the adjusting rod 39 passes through the top plate 33. The adjusting rod 39 is a screw. The adjusting rod 39 is provided with a threaded nut 310 above the top plate 33.

[0026] Through the above technical solution, the nut 310 on the adjusting rod 39 can suspend the auxiliary roller 37 below the top plate 33. By adjusting the position of the nut 310 on the adjusting rod 39, the distance between the auxiliary roller 37 and the active roller 34 can be adjusted downwards or upwards. The structure of the adjusting rod 39 and the nut 310 facilitates adjustment.

[0027] Furthermore, a bullet-shaped rubber sleeve 5 is fitted onto one end of the steel strand 4 during insertion to prevent the end of the steel strand 4 from damaging the holes in the precast beam during the threading process. At the same time, the rubber sleeve can reduce friction and facilitate insertion.

[0028] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A precast beam steel strand threading device, characterized in that: It includes a mobile platform (1), a lifting assembly (2) and a threading assembly (3), wherein the lifting assembly (2) is fixed on the mobile platform (1) and the threading assembly (3) is fixed on the lifting assembly (2); The threading assembly (3) includes an installation frame and auxiliary rollers (37) and active rollers (34) arranged vertically within the installation frame, with the steel strand (4) located between the auxiliary rollers (37) and the active rollers (34). The two ends of the auxiliary roller (37) are slidably connected to the mounting frame through the adjusting rod (39), and the distance between the auxiliary roller (37) and the active roller (34) is adjusted by the adjusting rod (39).

2. The precast beam steel strand threading device according to claim 1, characterized in that: The mounting frame includes a base plate (31), support columns (32) and a top plate (33). The four support columns (32) are located at the four corners of the base plate (31) and fixed to the four corners of the top plate (33). The base plate (31) is fixed to the lifting assembly (2).

3. The precast beam steel strand threading device according to claim 2, characterized in that: The active roller (34) has a first mounting plate (35) at both ends of the roller shaft. The active roller (34) is rotatably connected to the first mounting plate (35) through a bearing assembly. The first mounting plate (35) is fixed to the support column (32). A rotating motor (36) is provided on the first mounting plate (35) on one side of the active roller (34). The output shaft of the rotating motor (36) is connected to the roller shaft of the active roller (34).

4. The precast beam steel strand threading device according to claim 2, characterized in that: The auxiliary roller (37) has a second mounting plate (38) at both ends of the roller shaft. The auxiliary roller (37) is rotatably connected to the second mounting plate (38) through a bearing assembly. The bottom end of the adjusting rod (39) is fixed to the upper end of the second mounting plate (38). The other end of the adjusting rod (39) passes through the top plate (33). The adjusting rod (39) is a screw. The adjusting rod (39) is provided with a threaded nut (310) above the top plate (33).

5. The precast beam steel strand threading device according to claim 1, characterized in that: The lifting assembly (2) adopts a worm gear lifting mechanism or a telescopic cylinder.

6. The precast beam steel strand threading device according to claim 2, characterized in that: The support column (32) has a column (6) on one side. The column (6) has a slot in the direction corresponding to the support column (32). The support column (32) has a slider (311) that slides in the slot of the column (6).

7. The precast beam steel strand threading device according to claim 1, characterized in that: The end through which the steel strand (4) is inserted is fitted with a bullet-shaped rubber sleeve.

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