Electric screwing tool for connecting reinforcing steel bar and sleeve

Abstract

The utility model relates to an electric screwing tool for connecting a reinforcing steel bar and a sleeve, which comprises a U-shaped span frame, the U-shaped span frame comprises a cross beam, the top of a swinging support is rotatably arranged on the cross beam, the bottom of the swinging support is an arc-shaped hook part, and the arc-shaped hook part is used for supporting the reinforcing steel bar A; the clamp is connected with an output shaft of the motor through a universal coupling, and the clamp is used for clamping a reinforcing steel bar A; and the motor is fixedly mounted on the motor mounting frame. By the adoption of the technical scheme, the number of needed workers is small, the labor intensity is low, and misalignment of the two non-connecting ends of two butt-joint steel bars can be tolerated to a certain degree.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of steel bar connection, and particularly relates to an electric screwing tool for connecting a steel bar and a sleeve. BACKGROUND

[0002] An underground continuous wall is an important way for deep foundation pit support, has a relatively long length, generally more than 25 meters, and thus the steel bars used have a relatively long length and a relatively large diameter. A relatively long steel bar is generally formed by connecting two or more steel bars through a mechanical sleeve.

[0003] In order to improve the construction efficiency of steel bar connection, the industry has developed corresponding tools to match the electric screwing connection of steel bars and sleeves. In order to facilitate the rotation of the electric clamping part for clamping the steel bar, the steel bar is generally raised to be higher than the ground. For example, the utility model patent with the publication number CN216007552U discloses a connecting device for connecting straight-thread steel bars and sleeves, which is provided with a steel bar fixing support including a triangular support, a horizontal rod and a steel bar support. The two ends of the horizontal rod are supported on the triangular support, and a pair of steel bar supports are fixedly arranged at the middle part of the horizontal rod for clamping the steel bar between the two steel bar supports to place the steel bar in a clamped manner so that the steel bar is not easy to deviate.

[0004] The above-mentioned prior art has the following defects: In order to realize the butt joint of two steel bars, at least two sets of steel bar fixing supports are required. When connecting, the two steel bars having a connection relationship need to be placed on the steel bar fixing supports, and the work of lifting and taking down the steel bars is large. Since two sleeves are required for the preliminary connection with the steel bars, at least three people are required to cooperate to complete the connection. In addition, the connecting sleeve is located at the middle part of the two sets of steel bar fixing supports and is basically located at the position of maximum sagging deformation. The butt joint effect of the two steel bars is not good. SUMMARY

[0005] The technical problem to be solved by the present application is to make up for the deficiencies of the prior art and provide an electric screwing tool for connecting a steel bar and a sleeve.

[0006] To solve the above-mentioned technical problem, the technical scheme of the present application is as follows:

[0007] An electric screwing tool for connecting a steel bar and a sleeve, comprising a U-shaped cross frame, the U-shaped cross frame comprising a horizontal beam, a top part of a swing support being rotatably arranged on the horizontal beam, and an arc-shaped hook part at a bottom part of the swing support for supporting a steel bar A; further comprising a clamp connected to an output shaft of a motor through a universal joint, the clamp being used for clamping the steel bar A; and the motor being fixedly installed on a motor mounting frame.

[0008] Further, the U-shaped cross frame further comprises a diagonal brace and a flat plate, the flat plate being used for being placed on the ground and fixing the diagonal brace, and the diagonal brace being supported at two ends of the horizontal beam.

[0009] Further, the top of the swing support is rotationally arranged on a sliding module, the sliding module is slidably connected with the cross beam, and the sliding direction is the horizontal X direction.

[0010] Further, the sliding module comprises a sliding sleeve and a screw rod which are integrally connected, the sliding sleeve is slidably connected with the cross beam, the screw rod is horizontal and perpendicular to the X direction, and a nut is screwed on the overhanging end of the screw rod; the swing support comprises a small plate, a boom and the arc-shaped hook portion which are sequentially and integrally connected from top to bottom, the small plate is rotationally connected with the screw rod, and the sliding sleeve and the nut jointly limit the front and back movement of the small plate.

[0011] Further, the motor mounting frame comprises a top plate and a bottom plate which are arranged in a spaced-apart manner, and the top plate and the bottom plate are supported and connected by columns which are separately arranged at four corners; the motor is fixedly mounted on the bottom plate and located between the top plate and the bottom plate.

[0012] Further, a plurality of casters are fixedly connected below the bottom plate of the motor mounting frame.

[0013] Further, the clamp comprises a movable jaw and a fixed jaw, the movable jaw and the fixed jaw are rotationally connected through a pin shaft, and a torsion spring is arranged between the movable jaw and the fixed jaw to keep clamping.

[0014] Further, a connecting rod A is welded on the fixed jaw, the connecting rod A is offset and welded in parallel with a connecting rod B, the jaw opening of the clamp faces the side of the connecting rod B, and the connecting rod B is connected with the output shaft of the motor through a universal coupling.

[0015] Compared with the prior art, the present technical solution does not need 3 people to cooperate and lift and place 2 butt-jointed steels, and at most only needs 2 people to cooperate: one person observes the screwing state, and one person lifts and places the to-be-clamped end of the steel A and manipulates the clamp and the remote controller, thereby reducing the personnel ratio and labor intensity; the rotation of the steel A drives the swing support to swing, so that the misalignment of the two non-connection ends of the two steels (the steel A and the steel B) can be tolerated to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of an embodiment of the present application (one).

[0017] Figure 2 is a perspective view of an embodiment of the present application (two).

[0018] Figure 3 is a front view of an embodiment of the present application.

[0019] Figure 4 is Figure 1 is an enlarged view of part A in FIG.

[0020] Figure 5 is Figure 1 is an enlarged view of part B in FIG. 1.

[0021] Figure 6 is Figure 2 is an enlarged view of part C in FIG. 1.

[0022] Figure 7 is a schematic diagram of the use state of an embodiment of the present application.

[0023] In the figure: 1-U-shaped cross frame, 101-cross beam, 102-inclined support, 103-flat plate, 2-swing support, 201-arc-shaped hook part, 202-derrick, 203-small plate, 3-clamp, 301-movable clamp head, 302-fixed clamp head, 4-motor, 5-motor mounting frame, 501-bottom plate, 502-stand column, 503-top plate, 6-castor, 7-sliding module, 701-sliding sleeve, 702-nut, 703-screw rod, 8-connection rod A, 9-connection rod B, 10-universal coupling, 11-steel bar A, 12-steel bar sleeve, 13-steel bar B, 14-ground. DETAILED DESCRIPTION

[0024] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0025] An electric screwing tool for connecting a steel bar and a sleeve includes a U-shaped cross frame 1, a swing support 2, a clamp 3, a motor 4, and a handheld remote controller for controlling the start and stop of the motor 4.

[0026] The U-shaped cross frame 1 includes a cross beam 101, an inclined support 102, and a flat plate 103 connected integrally, as shown in Figure 3 The cross beam 101 is arranged horizontally along the horizontal X direction, and one inclined support 102 is welded at each end of the cross beam 101, and the flat plate 103 is welded at the bottom of the inclined support 102. The flat plate 103 is used to be placed on the ground 14 and fix the inclined support 102, and the inclined support 102 is supported at both ends of the cross beam 101.

[0027] The swing support 2 includes a small plate 203, a derrick 202, and an arc-shaped hook part 201 connected integrally from top to bottom, and the arc-shaped hook part 201 is used to support the steel bar A 11; the sliding module 7 includes a sliding sleeve 701 and a screw rod 703 connected integrally, the sliding sleeve 701 is slidingly connected with the cross beam 101, and the sliding direction is the horizontal X direction, the screw rod 703 is horizontal and perpendicular to the X direction, and the nut 702 is screwed on the overhanging end of the screw rod 703; the small plate 203 of the swing support 2 is rotationally connected with the screw rod 703, and the sliding sleeve 701 and the nut 702 jointly limit the forward and backward movement of the small plate 203.

[0028] The clamp 3 comprises a movable jaw 301 and a fixed jaw 302, the movable jaw 301 and the fixed jaw 302 are connected by a pin shaft, and a torsion spring is arranged between the movable jaw 301 and the fixed jaw 302 to keep clamping; when the clamp is not clamping and the jaws are fully engaged, the jaws are arranged as "heaven covers earth", the overhanging end of the movable jaw 301 is "heaven", and the overhanging end of the fixed jaw 302 is "earth", as shown in Figure 5 A connecting rod A8 is welded on the fixed jaw 302, the connecting rod A8 is welded in parallel offset with the connecting rod B9, the jaw of the clamp 3 is directed to the side of the connecting rod B9, and the connecting rod B9 is connected with the output shaft of the motor 4 through the universal joint 10.

[0029] The motor mounting frame 5 comprises a top plate 503 and a bottom plate 501 arranged in an upper and lower interval, and the top plate 503 and the bottom plate 501 are supported and connected by columns 502 arranged at four corners; the motor 4 is fixedly installed on the bottom plate 501 between the top plate 503 and the bottom plate 501. A plurality of casters 6 are fixedly connected below the bottom plate 501 of the motor mounting frame 5.

[0030] Use of the embodiment:

[0031] As shown in Figure 7 , the cross beam 101 of the U-shaped cross frame 1 is arranged above the batch of longitudinally arranged steel bars A11 and away from the steel sleeve 12 to be connected. The end of the steel bar B13 to be connected is connected with the steel sleeve 12, and the steel bar A11 to be connected is screwed with the steel sleeve 12 by two turns manually. The sliding module 7 is pushed to drive the swing support 2 to move above the steel bar A11 to be connected, and the end of the steel bar A11 to be clamped is lifted and placed on the arc-shaped hook portion 201 of the swing support 2. The motor mounting frame 5 is moved to a suitable position, so that the output shaft of the motor 4 is perpendicular to the cross beam 101 as much as possible. The overhanging end of the movable jaw 301 of the clamp 3 is attached to the top of the steel bar A11, the fixed jaw 302 is pulled downward to open the jaw of the clamp 3, and the clamp 3 is pushed sideways to clamp the steel bar A11, and the clamp of the steel bar A11 is maintained by the rebound force of the torsion spring. The hand-held remote controller is operated to drive the motor 4 to rotate the steel bar A11, and the steel bar A11 is screwed with the steel sleeve 12 by rotating the steel bar A11; when the screwing is in place, the motor 4 stops rotating. At most, only two people are needed to cooperate: one person observes the screwing state, and the other person lifts the end of the steel bar A11 to be clamped and operates the clamp 3 and the remote controller. When operating, the operator can sit on the top plate 503 of the motor mounting frame 5 to reduce the labor intensity.

[0032] This embodiment can connect two steel bars that are not exactly on the same straight line. Because the longer steel bar has a certain degree of flexibility, the rotation of steel bar A11 will cause the swing support 2 to swing when only the end connected to the steel bar sleeve 12 is aligned. This can tolerate the misalignment of the two non-connecting ends of the two steel bars (steel bar A11 and steel bar B13) to a certain extent.

[0033] The above description is only one embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An electric screwing tool for connecting a reinforcing bar to a sleeve, characterized in that: The utility model provides a kind of steel bar bending machine, including U-shaped crosspiece (1), the top of swing support (2) is rotationally arranged on crossbeam (101), the bottom of swing support (2) is arc hook portion (201), and arc hook portion (201) is used to support steel bar A (11);It further includes clamp (3), clamp (3) is connected with the output shaft of motor (4) by universal coupling (10), clamp (3) is used to hold steel bar A (11);Motor (4) is fixedly installed on motor mounting bracket (5).

2. The electric screwing tool for connecting a reinforcing bar to a sleeve according to claim 1, characterized in that: The U-shaped crosspiece (1) further includes a diagonal brace (102) and a flat plate (103), the flat plate (103) is used to be placed on the ground (14) and fix the diagonal brace (102), and the diagonal brace (102) is supported at both ends of the crossbeam (101).

3. The electric screwing tool for connecting a reinforcing bar with a sleeve according to claim 1, characterized in that: The top of the swing support (2) is rotationally arranged on a sliding module (7), and the sliding module (7) is slidably connected with the crossbeam (101) in a horizontal X direction.

4. The electric screwing tool for connecting a reinforcing bar with a sleeve according to claim 3, characterized in that: The sliding module (7) includes a sliding sleeve (701) and a screw rod (703) connected integrally, the sliding sleeve (701) is slidably connected with the crossbeam (101), the screw rod (703) is horizontal and perpendicular to the X direction, and a nut (702) is screwed on the overhanging end of the screw rod (703); the swing support (2) includes a small plate (203), a boom (202) and the arc hook portion (201) connected integrally from top to bottom, the small plate (203) is rotationally connected with the screw rod (703), and the sliding sleeve (701) and the nut (702) jointly limit the forward and backward movement of the small plate (203).

5. The electric screwing tool for connecting a reinforcing bar with a sleeve according to claim 1, characterized in that: The motor mounting bracket (5) includes a top plate (503) and a bottom plate (501) arranged vertically, and the top plate (503) and the bottom plate (501) are supported and connected by columns (502) arranged at four corners; the motor (4) is fixedly installed on the bottom plate (501) between the top plate (503) and the bottom plate (501).

6. The electric screwing tool for connecting a reinforcing bar to a sleeve according to claim 5, characterized in that: A plurality of casters (6) are fixedly connected below the bottom plate (501) of the motor mounting bracket (5).

7. The electric screwing tool for connecting a reinforcing bar with a sleeve according to claim 1, characterized in that: The clamp (3) includes a movable jaw (301) and a fixed jaw (302), the movable jaw (301) and the fixed jaw (302) are rotationally connected by a pin shaft, and a torsional spring is arranged between the movable jaw (301) and the fixed jaw (302) to keep clamping.

8. The electric screwing tool for connecting a reinforcing bar to a sleeve according to claim 7, characterized in that: A connecting rod A (8) is welded on the fixed jaw (302), the connecting rod A (8) is offset and welded in parallel with a connecting rod B (9), the jaw opening of the clamp (3) faces the side of the connecting rod B (9), and the connecting rod B (9) is connected with the output shaft of the motor (4) by a universal coupling (10).

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