Device for improving connecting efficiency of finish rolling deformed steel bars

Abstract

The utility model relates to the technical field of deformed steel bar connection, and discloses a device for improving finish rolling deformed steel bar connection efficiency, which comprises two limiting sleeves, two connecting support frames are connected between the two limiting sleeves, the central axes of the two limiting sleeves coincide, and fastening components are arranged on the surfaces of the two limiting sleeves; the limiting sleeve comprises a fixed sleeve base, the surface of the fixed sleeve base is rotationally connected with a movable piece, and the fastening assembly is connected between the fixed sleeve base and the movable piece. According to the device for improving the connecting efficiency of the finish-rolled deformed steel bars, the limiting sleeves, the connecting supporting frame and the fastening assembly are arranged, the connecting supporting frame is connected and fixed with the two limiting sleeves and supports the whole device, the two limiting sleeves clamp the ends of the two finish-rolled deformed steel bars correspondingly, the two finish-rolled deformed steel bars are accurately aligned, a connector rotating space is provided, and the connecting efficiency of the two finish-rolled deformed steel bars is improved. The two finish rolling deformed steel bars can be conveniently and concentrically aligned, and a connector can be conveniently installed.

Description

Technical Field

[0001] The utility model relates to the technical field of threaded steel connection, in particular to a device for improving the connection efficiency of precision-rolled threaded steel. Background Art

[0002] Precision-rolled threaded steel bars, also known as threaded steel bars for prestressed concrete, are large-diameter, high-strength, and high-dimensional-precision straight steel bars with discontinuous external threads rolled on the entire bar. The steel bars can be connected by connectors with internal threads at any cross-section. Prestressed beams in hydraulic, port and navigation projects are gradually beginning to use precision-rolled threaded steel bars as prestressed bars. A prestressed pedestal production line can produce multiple prefabricated beams at the same time. The prestressed precision-rolled threaded steel bars between beams are connected by connectors for overall tensioning.

[0003] Conventional connection method of fine-rolled rebar: Taking PSB785 grade fine-rolled rebar with a diameter of 25mm as an example, the matching connector is 15cm long. First, draw a line 7.5cm away from the end of the prestressed tendon to be connected to make a clear mark, and then rotate the connector completely into the connection of the first prestressed tendon to make the tail of the connector flush with the end of the prestressed tendon, and then make the connection end of the second prestressed tendon flush with the connection end of the first prestressed tendon, and then rotate the connector out to the 7.5cm mark from the end of the second prestressed tendon so that the two ends of the connector are aligned with the two marks to achieve connection. To ensure that the two prestressed tendons are aligned and tightened, finally use a torque wrench to rotate the prestressed tendon and tighten it to prevent the end from being detached.

[0004] When the above connection method is used, when the on-site prestressed tendons are connected with the tensioning wire rods (both are fine-rolled threaded steel bars), since the height of the tensioning wire rods is consistent with the position of the prestressed tendons in the drawings, the connection of the tensioning wire rods is suspended in the air. When connected to the prestressed tendons, the two ends are not concentric, resulting in difficulty in alignment, which is time-consuming and labor-intensive. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a device for improving the connection efficiency of fine-rolled threaded steel bars, which solves the problems mentioned in the above background.

[0006] The utility model provides the following technical solution: a device for improving the connection efficiency of fine-rolled threaded steel, comprising: two limiting sleeves, two connecting support frames are connected between the two limiting sleeves, and the central axes of the two limiting sleeves coincide, and fastening components are arranged on the surfaces of the two limiting sleeves;

[0007] The limiting sleeve comprises a surface of a fixed cylinder seat rotatably connected with a movable piece, and the fastening assembly is connected between the fixed cylinder seat and the movable piece.

[0008] Preferably, the fastening assembly includes an adjusting rod, an adjusting block, a limit block and a limit seat, the adjusting block is threadedly connected to the surface of the adjusting rod, the surface of the adjusting rod is symmetrically provided with rotating rods, the surfaces of two rotating rods are connected to fixed blocks, the two fixed blocks are connected to the surface of the movable sheet, the limit seat is connected to the surface of the fixed cylinder seat, the surface of the adjusting rod is connected to the inner wall of the limit seat, the limit block is connected to the surface of the adjusting rod, and the surface of the limit block is movably connected to the surface of the limit seat.

[0009] Preferably, a hand-twisting rod is connected to the surface of the limit block, and one end of the hand-twisting rod is connected to a grip rod.

[0010] Preferably, a hinge is installed on the surface of the fixed cylinder seat, and the other end of the hinge is connected to the surface of the movable sheet.

[0011] Preferably, the connecting support frame is made of hot-rolled round steel bars, and the diameter of the connecting support frame is 25 mm.

[0012] Preferably, the connecting support frame is a U-shaped connecting support frame.

[0013] Preferably, the end of the connecting support frame is welded to the surface of the fixed cylinder seat.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The device for improving the connection efficiency of fine-rolled threaded steel bars comprises a limit sleeve, a connection support frame and a fastening assembly. The connection support frame connects and fixes two limit sleeves and supports the entire device. The two limit sleeves respectively clamp the ends of two fine-rolled threaded steel bars so that the two fine-rolled threaded steel bars are accurately aligned and provide a rotation space for the connector, so that the two fine-rolled threaded steel bars are conveniently aligned concentrically and the connector is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a side structural schematic diagram of the utility model.

[0020] In the figure: 1. limit sleeve; 101. fixed cylinder seat; 102. movable sheet; 2. connecting support frame; 3. fastening assembly; 31. adjusting rod; 32. adjusting block; 33. rotating rod; 34. fixed block; 35. limit block; 36. limit seat; 4. hinge; 5. hand-tightening rod; 6. grip rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 A device for improving the connection efficiency of fine-rolled threaded steel bars comprises: two limiting sleeves 1, two connecting support frames 2 are connected between the two limiting sleeves 1, and the central axes of the two limiting sleeves 1 coincide with each other, fastening components 3 are arranged on the surfaces of the two limiting sleeves 1, the limiting sleeves 1 comprise a surface of a fixed sleeve seat 101 rotatably connected with a movable sheet 102, and the fastening component 3 is connected between the fixed sleeve seat 101 and the movable sheet 102.

[0023] See also Figure 3 The fastening assembly 3 includes an adjusting rod 31, an adjusting block 32, a limiting block 35 and a limiting seat 36. The adjusting block 32 is threadedly connected to the surface of the adjusting rod 31. The surface of the adjusting rod 31 is symmetrically provided with rotating rods 33. The surfaces of the two rotating rods 33 are connected to fixed blocks 34. The two fixed blocks 34 are connected to the surface of the movable sheet 102. The limiting seat 36 is connected to the surface of the fixed cylinder seat 101. The surface of the adjusting rod 31 is connected to the inner wall of the limiting seat 36. The limiting block 35 is connected to the surface of the adjusting rod 31, and the surface of the limiting block 35 is movably connected to the surface of the limiting seat 36. The surface of the limiting block 35 is connected to a hand-tightening rod 5, and one end of the hand-tightening rod 5 is connected to a gripping rod 6.

[0024] A hinge 4 is installed on the surface of the fixed cylinder seat 101 , and the other end of the hinge 4 is connected to the surface of the movable sheet 102 .

[0025] The connecting support frame 2 is made of hot-rolled round steel bars, the diameter of the connecting support frame 2 is 25 mm, the connecting support frame 2 is a U-shaped connecting support frame 2, and the end of the connecting support frame 2 is welded to the surface of the fixed cylinder seat 101.

[0026] The two limiting sleeves 1 are connected by two connecting support frames 2. The connecting support frames 2 are made of 25mm diameter, HPB300 hot-rolled round steel bars, that is, hot-rolled round steel bars with a yield strength of 300MPa are processed into a U shape. The two ends of the connecting support frame 2 are respectively welded to the surfaces of the two fixed cylinder seats 101, forming an eight-shaped shape. When the supporting connecting rod is welded to the sleeve, it is necessary to ensure that the central axes of the two limiting sleeves 1 coincide with each other, and the height of the limiting sleeve 1 meets the size and angle of the adjusting support connecting frame. The limiting sleeve 1 is assembled through the fixed cylinder seat 101 and the movable sheet 102, and the movable sheet 102 is connected to the fixed cylinder seat 101 through the hinge 4. The seat 101 is rotatably connected. The fixed cylinder seat 101 is made of elastic steel sheet. The opening and closing part has a full-length gap for fastening. After the fine-rolled threaded steel is inserted into the fixed cylinder seat 101, the rotating adjustment rod 31 is docked with the inner wall of the limit seat 36. The gripping rod 6 is held to drive the hand-tightening rod 5 to rotate. The hand-tightening rod 5 drives the adjustment rod 31 to rotate. The adjustment rod 31 rotates on the inner wall of the adjustment block 32. The position of the movable adjustment rod 31 can be moved to fasten the movable sheet 102, which can bite and fix the fine-rolled threaded steel. The net spacing between the two fixed sleeves is 1.5 times the length of the connector. The height of the two fine-rolled threaded steels is consistent, and the connector rotation space is provided;

[0027] When installing, when the fine-rolled threaded steel is connected, one end of the fine-rolled threaded steel is inserted into the limiting sleeve 1, and the connector is first screwed into the first fine-rolled threaded steel, so that one end of the connector is flush with the end of the prestressed tendon, and the end face of the other end of the connector is closely aligned with the end face of the limiting sleeve 1, and the adjusting rod 31 is rotated to connect with the inner wall of the limiting seat 36, and the grip rod 6 is held to drive the hand-tightening rod 5 to rotate, and the hand-tightening rod 5 drives the adjusting rod 31 to rotate, and the adjusting rod 31 rotates on the inner wall of the adjusting block 32, and the position of the movable adjusting rod 31 is tightened to the movable piece 102 to fix the position of the first fine-rolled threaded steel, and the other fine-rolled threaded steel connection end is inserted into the other limiting sleeve 1, so that the two fine-rolled threaded steel ends are flush and close, and the limiting sleeve 1 is tightened to fix the second fine-rolled threaded steel, and the connector is screwed out so that its outer end face is closely aligned with the end face of the opposite sleeve. At this time, the joint of the two fine-rolled threaded steels is the center position of the connector, and the sleeve removal device is opened, and the connection of the fine-rolled threaded steels is completed.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for improving the connection efficiency of finished rolled threaded steel, characterized in that: include: Two limiting sleeves (1), two connecting support frames (2) are connected between the two limiting sleeves (1), the central axes of the two limiting sleeves (1) coincide with each other, and fastening components (3) are arranged on the surfaces of the two limiting sleeves (1); The limiting sleeve (1) comprises a fixed sleeve seat (101) having a surface rotatably connected to a movable sheet (102), and the fastening assembly (3) is connected between the fixed sleeve seat (101) and the movable sheet (102).

2. The device for improving the connection efficiency of finished rolled threaded steel bars according to claim 1, characterized in that: The fastening assembly (3) comprises an adjusting rod (31), an adjusting block (32), a limiting block (35) and a limiting seat (36); the adjusting block (32) is threadedly connected to the surface of the adjusting rod (31); the surface of the adjusting rod (31) is symmetrically provided with rotating rods (33); the surfaces of the two rotating rods (33) are connected to fixed blocks (34); the two fixed blocks (34) are connected to the surface of the movable sheet (102); the limiting seat (36) is connected to the surface of the fixed cylinder seat (101); the surface of the adjusting rod (31) is connected to the inner wall of the limiting seat (36); the limiting block (35) is connected to the surface of the adjusting rod (31); and the surface of the limiting block (35) is movably connected to the surface of the limiting seat (36).

3. The device for improving the connection efficiency of finished rolled threaded steel bars according to claim 2, characterized in that: A hand-twisting rod (5) is connected to the surface of the limit block (35), and one end of the hand-twisting rod (5) is connected to a grip rod (6).

4. The device for improving the connection efficiency of finished rolled threaded steel bars according to claim 1, characterized in that: A hinge (4) is installed on the surface of the fixed cylinder seat (101), and the other end of the hinge (4) is connected to the surface of the movable sheet (102).

5. The device for improving the connection efficiency of finished rolled threaded steel bars according to claim 1, characterized in that: The connecting support frame (2) is made of hot-rolled smooth round steel bars, and the diameter of the connecting support frame (2) is 25 mm.

6. The device for improving the connection efficiency of finished rolled threaded steel bars according to claim 1, characterized in that: The connecting support frame (2) is a U-shaped connecting support frame (2).

7. The device for improving the connection efficiency of finished rolled threaded steel bars according to claim 1, characterized in that: The end of the connecting support frame (2) is welded to the surface of the fixed cylinder seat (101).

Images