Quick tightening device for reinforcing steel bar straight thread sleeve
By designing a quick tightening device for a straight threaded sleeve of reinforcing bars, which includes a motor bracket and a pipe wrench, the problems of low efficiency and unstable quality of traditional manual tightening are solved, achieving efficient and stable reinforcing bar connections and improving construction efficiency and connection quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-03-20
AI Technical Summary
Traditional manual tightening of straight threaded sleeves for connecting steel bars is inefficient, labor-intensive, and difficult to guarantee consistent tightening torque. The quality is greatly affected by human factors, and it is difficult to complete a large number of tightening tasks in a short time, resulting in weak or damaged steel bar connections.
A quick tightening device for straight threaded steel bars is adopted, which includes components such as a motor bracket, casters, a bearing top plate, a three-phase asynchronous motor, a gear ring reducer, and pipe clamps. The device uses a motor to drive the pipe clamps to tighten or loosen the straight threaded steel bars, thereby achieving stable torque output and rapid tightening.
It improves the efficiency of steel bar connection, ensures that the torque at each connection point meets the design requirements, avoids the problem of local overtightness or looseness, improves connection quality and work efficiency, and reduces labor costs.
Smart Images
Figure CN224011653U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of building construction, concretely to a reinforcing steel bar straight thread sleeve quick tightening device. BACKGROUND
[0002] The subway station enclosure structure underground continuous wall is deep, reinforcing cage manufacturing usually connects several steels by mechanical connection, and the material usually used for steel connection is straight thread sleeve, that is, the straight thread screw heads of two steels are screwed into the two ends of the sleeve, and the steel screw heads are tightly pressed in the central position of the sleeve.
[0003] The traditional process is manual tightening by pipe wrench, which completely relies on manual operation, and the operator needs to rotate the pipe wrench. When manually tightening the steel, the worker is easily tired, and with the passage of time and the increase of workload, the worker's physical consumption is large, the tightening speed and strength will gradually decrease, it is difficult to maintain a stable working state, and a large amount of tightening work cannot be completed in a short time. In addition, due to the personal quality of the operator, it is difficult to ensure that the torque of each steel connecting point can reach the standard value required by the design. If the torque is too small, the steel connection is not firm, which will affect the stability of the structure; if the torque is too large, the steel may be damaged or the connecting part may be damaged; due to the limitation of manual operation, the operation strength and method of different workers and the same worker at different times may be different, which leads to the uneven degree of steel tightening; in addition, after manual tightening of the straight thread sleeve, there are phenomena such as poor connection between adjacent two steels, too much tooth exposure, etc. affecting the quality. This process is deficient in the tightening quality and working efficiency of the steel joint. SUMMARY
[0004] The utility model provides a reinforcing steel bar straight thread sleeve quick tightening device to solve the problems of low efficiency, high labor intensity, difficult to guarantee the consistency of tightening torque and great influence of quality by human factors when connecting two steels by straight thread sleeve.
[0005] The utility model adopts the following technical scheme to realize:
[0006] The utility model provides a kind of reinforcing bar straight thread sleeve quick tightening device, including motor bracket, the bottom four corners of motor bracket are equipped with universal wheel, the top surface of motor bracket is fixed with bearing top plate, three-phase asynchronous motor is placed in motor bracket, three-phase asynchronous motor is electrically connected with positive and negative rotation switch fixed in the rear end of three-phase asynchronous motor, the top edge of motor bracket is installed with the starting switch connected three-phase asynchronous motor in the front of bearing top plate, starting switch is connected in series with positive and negative rotation switch, the output end of three-phase asynchronous motor is connected with the input end of gear ring speed reducer, the output shaft end of gear ring speed reducer is connected with transmission rod by universal coupling, the axis of transmission rod is located in the same straight line with the rotation shaft of the output end of gear ring speed reducer, the free end of transmission rod is fixed with pipe tongs clamp clamping straight thread steel by connecting block, the clamping opening section of straight thread steel in pipe tongs clamp is located in the same straight line with the axis of transmission rod, steel bracket is placed in the front of pipe tongs clamp, steel bracket is movably installed on the cross frame of steel bracket, the hook bend center of steel bracket is located in the same straight line with the axis of transmission rod.
[0007] When implemented, it includes a motor bracket, the bottom four corners of the motor bracket are equipped with universal wheels, the universal wheels are connected with the bracket by screws for walking, a carrying handrail is installed on the rear side of the motor bracket, the lower end of the carrying handrail is welded to the bottom frame of the motor bracket, the carrying handrail is welded from two identical handrail frames and handle bars, the lower end of the handrail frame is fixed to the middle of the side edge of the bottom frame of the motor bracket, the middle and lower part of the handrail frame is fixed to the top corner of the rear side of the top frame of the motor bracket, the two points are more stable, the handrail frame is inclined, the handle bar is connected between the top ends of the handrail frame, when not working, the device is moved by pushing the handle bar, the bottom end of the handrail frame is fixed, during the movement of the entire device, when encountering a ditch or a protrusion that needs to be crossed, the front wheels of the entire motor bracket can be lifted by stepping on the bottom frame of the motor bracket, thereby enabling the device to cross.
[0008] A bearing top plate is fixed to the top surface of the motor bracket, the left and right sides of the bearing top plate are wrapped around the left and right side edges of the top edge of the motor bracket to form an arc edge for the operator to ride, to ensure the safety of the operator, the bearing top plate is made of insulating material, a grounding device is connected to the bottom frame of the motor bracket, a three-phase asynchronous motor is placed in the motor bracket, and a space is left between the plane where the left and right side edges of the motor bracket are located and the three-phase asynchronous motor to avoid burns or low-temperature burns caused by long-term contact when the operator rides on top, preferably, side plates are fixed to the left and right sides of the motor bracket and are integrally connected with the bearing top plate.
[0009] The three-phase asynchronous motor is electrically connected with a forward-reverse switch fixed at the rear end of the three-phase asynchronous motor. The forward-reverse switch is a two-connection press type forward-reverse switch, which is used to adjust the rotating direction of the three-phase asynchronous motor, and can realize the tightening and loosening of the straight-threaded steel bar. In the normal state, no adjustment is made. The top edge of the motor bracket is located in front of the bearing top plate, and a starting switch connected with the three-phase asynchronous motor is installed, which is convenient for stopping the three-phase asynchronous motor when the straight-threaded steel bar is replaced. The starting switch is connected in series with the forward-reverse switch.
[0010] The output end of the three-phase asynchronous motor is connected with the input end of the gear ring speed reducer, which can avoid the problems of wire slipping and deformation of the straight-threaded sleeve caused by too high rotating speed, and can avoid the uneven stress on the straight-threaded steel bar, thereby affecting the product quality. The three-phase asynchronous motor is connected as a whole, the output shaft of the gear ring speed reducer is connected with a transmission rod through a universal joint, the universal joint is a cross shaft type universal shaft, which can realize the movement of the transmission rod, and is convenient for the pipe clamp to be taken off from the straight-threaded steel bar. The axis of the transmission rod and the rotating shaft of the output end of the gear ring speed reducer are located on the same straight line. The free end of the transmission rod is fixed with a pipe clamp for clamping the straight-threaded steel bar through a connecting block. Further, the connecting block is screwed on the end of the transmission rod through a bolt. By replacing different connecting blocks, the pipe clamp with different jaw sizes can be adapted, and the installation of straight-threaded steel bars of different specifications can be realized. The clamping opening section of the pipe clamp and the axis of the transmission rod are located on the same straight line. A steel bar bracket is placed in front of the pipe clamp. The steel bar bracket is made of φ22 steel bar. The steel bar bracket includes a horizontal frame, and human-shaped legs are fixed at both ends of the horizontal frame. A steel bar hanger is movably installed on the horizontal frame of the steel bar bracket. Specifically, the hook handle of the steel bar hanger is movably sleeved on the horizontal frame. The hook opening of the steel bar hanger is larger than the diameter of the straight-threaded steel bar, which is convenient for the straight-threaded steel bar to be taken and placed. The hook bend center of the steel bar hanger and the axis of the transmission rod are located on the same straight line.
[0011] When the straight-threaded steel bar is lifted at one end, the length of the straight-threaded steel bar is large, and the lifting height (i.e. the height between the output end of the three-phase asynchronous motor and the ground) is small, that is, the long straight-threaded steel bar is lifted by a small height. The middle end of the straight-threaded steel bar will be bent, and the end placed on the ground will be straight. The axis of the straight-threaded steel bar and the straight-threaded sleeve remains on a straight line, and wire slipping will not occur. The free end of the straight-threaded steel bar is suspended in the steel bar hanger. Since the length behind the suspension point is short, the straight-threaded steel bar behind the steel bar hanger also remains straight.
[0012] The operator rides on the bearing top plate, lifts one end of the straight threaded steel bar upward and hangs it on the steel bar hook, lifts the transmission rod, clamps the tail end of the straight threaded steel bar by using the pipe clamp, at this time, the universal coupling makes the transmission rod and the output shaft of the gear ring speed reducer be in the same straight line, and the straight threaded steel bar is in the same straight line at one end of the steel bar hook, the operator operates the start switch, the three-phase asynchronous motor drives the gear ring speed reducer to rotate, the output shaft of the gear ring speed reducer rotates to drive the transmission rod to rotate, the connecting block rotates synchronously around the shaft of the transmission rod, the pipe clamp drives the straight threaded steel bar to rotate, and the straight threaded steel bar is screwed into the straight threaded sleeve.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The steel bar straight threaded sleeve quick tightening device provided by the utility model has stable and powerful rotation speed and torque output, can complete the tightening operation of the steel bar in a short time, can greatly shorten the construction time and improve the work efficiency in large-scale building construction, accurately adjusts the torque size, ensures that the tightening strength of each steel bar connecting point can meet the design requirement, makes the engagement between the threads of the steel bar and the connecting piece more uniform, avoids the problems of local over-tightening or over-looseness that may occur in manual tightening, thereby improving the overall connection quality, and can effectively improve the quality of the steel bar cage connector connection.
[0015] The steel bar tightening work that originally needs multiple workers to spend a lot of time to complete can now be quickly completed by fewer workers cooperating with the electric tool, thereby reducing the labor cost.
[0016] The device is made of common materials such as stainless steel square tubes, walking wheels and stainless steel sheets, is integrally manufactured and formed, and has a simple structure and is convenient to process.
[0017] The operator can ride on the device and also move by sliding with both feet, greatly facilitating the use and movement of the device, and having good practical application and popularization value. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 The utility model discloses a structure schematic diagram.
[0019] Fig. 2 The utility model discloses a side view.
[0020] Fig. 3 The utility model discloses a rear view.
[0021] In the diagram: 1-Handrail, 101-Handrail frame, 102-Handle lever, 2-Wheel caster, 3-Three-phase asynchronous motor, 4-Gear ring reducer, 5-Forward / reverse switch, 6-Bearing top plate, 7-Transmission rod, 8-Pipe clamp, 9-Motor bracket, 10-Rebar bracket, 1001-Horizontal frame, 1002-Human-shaped support leg, 1003-Rebar hook, 11-Start switch, 12-Universal coupling, 13-Connecting block. Detailed Implementation
[0022] The specific embodiments of this utility model will now be described with reference to the accompanying drawings.
[0023] A quick-tightening device for a straight threaded sleeve for reinforcing bars, such as Figs. 1-3 As shown: The motor bracket 9 is welded from 30mm square steel. Four casters 2 are installed at the bottom corners of the motor bracket 9, and are connected to the bracket with screws. The casters 2 are 1.5-inch casters with brakes for movement. A handling arm 1 is installed on the rear side of the motor bracket 9. The lower end of the handling arm 1 is welded to the bottom frame of the motor bracket 9. The handling arm 1 is also welded from 30mm square steel and includes two identical armrest frames 101 and handle bars 102. The lower end of the armrest frame 101 is fixed to the bottom of the motor bracket 9. The lower part of the handrail 101 is fixed to the rear corner of the top frame of the motor bracket 9 at the middle of the side edge of the frame. The two-point fixation is more stable. The handrail 101 is tilted at an angle of 45°. A handle bar 102 is connected between the top of the handrail 101. When not in operation, the device can be moved by pushing the handle bar 102. The bottom end of the handrail 101 is fixed. During the movement of the entire device, when encountering ditches or protrusions that need to be crossed, the front wheel of the entire motor bracket 9 can be lifted by stepping on the bottom frame of the motor bracket 9, thereby enabling the device to cross.
[0024] A supporting top plate 6 is fixed to the top surface of the motor bracket 9. The left and right sides of the supporting top plate 6 cover the left and right edges of the top edge of the motor bracket 9, forming an arc edge for the operator to sit on. To ensure the safety of the operator, the supporting top plate 6 is made of insulating material. A grounding device is connected to the bottom frame of the motor bracket 9. A three-phase asynchronous motor 3 is placed in the motor bracket 9. The three-phase asynchronous motor 3 adopts existing technology and is commercially available. The motor power is 1.5KW, 380V, 3.7A, 50Hz. There is a margin between the plane where the left and right edges of the motor bracket 9 are located and the three-phase asynchronous motor 3 to avoid burns or low-temperature burns caused by prolonged contact when the operator sits on it.
[0025] Alternatively, side plates are fixed to the left and right sides of the motor bracket, and the side plates are integrally connected to the supporting top plate.
[0026] like Fig. 3As shown: three-phase asynchronous motor 3 and fixed in the rear end of three-phase asynchronous motor 3 positive and negative rotation switch 5 electrical connection, positive and negative rotation switch 5 using two press type positive and negative rotation switch, for adjusting the direction of rotation of three-phase asynchronous motor 3, can realize the tightening and loosening of straight rebar, usually state does not adjust, the top edge of the motor bracket 9 located in the front of the bearing top plate 6 is installed with the starting switch 11 connected three-phase asynchronous motor 3, convenient to replace the straight rebar stop three-phase asynchronous motor 3, starting switch 11 and positive and negative rotation switch 5 in series.
[0027] The output end of three-phase asynchronous motor 3 and the input end of gear ring reducer 4 are connected, which avoids high speed leading to slip or deformation of straight thread sleeve, resulting in uneven stress of straight rebar, and further affecting product quality. The gear ring reducer 4 adopts existing technology, which is commercially available and has a power matching with the three-phase asynchronous motor 3. The input speed is 1440 r / min, and the center height is 140 mm. The gear ring reducer 4 is connected with the three-phase asynchronous motor to form a whole. The output shaft end of the gear ring reducer 4 is connected with the transmission rod 7 through the universal joint 12. The universal joint adopts cross shaft type universal shaft, which can realize the movement of the transmission rod 7, and is convenient for the pipe clamp 8 to be taken off from the straight rebar. The axis of the transmission rod 7 and the rotating shaft of the output end of the gear ring reducer 4 are located on the same straight line. The free end of the transmission rod 7 is fixed with the pipe clamp 8 for clamping the straight rebar through the connecting block 13. The pipe clamp 8 adopts 10-inch pipe clamp. As another way, the connecting block 13 is screwed on the end of the transmission rod 7 through bolts. By replacing different connecting blocks 13, the pipe clamp 8 with different jaw sizes can be adapted to install straight rebars of different specifications. The straight rebar is located on the same straight line with the axis of the transmission rod 7. The pipe clamp 8 is placed in front of the rebar bracket 10. The rebar bracket 10 is made of φ22 rebar. The rebar bracket 10 includes a horizontal frame 1001. The two ends of the horizontal frame 1001 are respectively fixed with human-shaped legs 1002. The rebar bracket 10 movably installs a rebar hanger 1003 on the horizontal frame 1001. Specifically, the hook handle end of the rebar hanger 1003 movably loops on the horizontal frame 1001. The hook opening of the rebar hanger 1003 is larger than the diameter of the straight rebar, which is convenient for taking and placing the straight rebar. The hook bend center of the rebar hanger 1003 and the axis of the transmission rod are located on the same straight line.
[0028] When using, one end of the straight rebar is lifted. Since the length of the straight rebar is large and the lifting height (i.e. the height between the output end of the three-phase asynchronous motor 3 and the ground) is small, i.e. the very long straight rebar is lifted by a small height, the middle end of the straight rebar will be bent, and the end placed on the ground will be straight. The axis of the straight rebar and the straight thread sleeve remains on a straight line, which will not cause slip. The free end of the straight rebar is hung in the rebar hanger 1003. Since the length behind the hanging point is short, the straight rebar behind the rebar hanger 1003 remains straight.
[0029] The operator sits on the bearing top plate 6, lifts one end of the straight threaded steel bar upward and hangs it on the steel bar hook 1003, lifts the transmission rod 7, clamps the end of the straight threaded steel bar by using the pipe clamp 8, at this time, the universal joint 12 makes the transmission rod 7 and the output shaft of the gear ring speed reducer 4 be in the same straight line, and the straight threaded steel bar is in the same straight line at one end of the steel bar hook 1003, the operator operates the starting switch 11, the three-phase asynchronous motor 3 drives the gear ring speed reducer 4 to rotate, the output shaft of the gear ring speed reducer 4 rotates, drives the transmission rod 7 to rotate, the connecting block 13 rotates synchronously around the shaft of the transmission rod, the pipe clamp drives the straight threaded steel bar to rotate, and the straight threaded steel bar is rotated into the straight threaded sleeve.
[0030] The scope of the utility model is not limited to the above specific embodiments, and for those skilled in the art, the utility model can have various modifications and alterations, and any modification, improvement and equivalent replacement within the concept and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A quick-tightening device for a straight threaded sleeve on reinforcing bars, characterized in that: The system includes a motor bracket (9), with casters (2) installed at the four corners of the bottom of the motor bracket (9). A load-bearing top plate (6) is fixed on the top surface of the motor bracket (9). A three-phase asynchronous motor (3) is placed in the motor bracket (9). The three-phase asynchronous motor (3) is electrically connected to a forward / reverse switch (5) fixed at the rear end of the three-phase asynchronous motor (3). A start switch (11) for connecting the three-phase asynchronous motor (3) is installed on the top edge of the motor bracket (9) in front of the load-bearing top plate (6). The start switch (11) is connected in series with the forward / reverse switch (5). The output end of the three-phase asynchronous motor (3) is connected to the input end of the gear ring reducer (4). The output shaft end of the gear ring reducer (4) is connected to the transmission rod (7) through a universal coupling. The axis of the transmission rod (7) and the shaft of the output end of the gear ring reducer (4) are on the same straight line. The free end of the transmission rod (7) is fixed with a pipe wrench (8) for clamping straight thread steel bars through a connecting block (13). The straight thread steel bar is located in the clamping section of the pipe wrench (8) and the axis of the transmission rod (7) are on the same straight line. A steel bar bracket (10) is placed in front of the pipe wrench (8). A steel bar hook (1003) is movably installed on the crossbar (1001) of the steel bar bracket (10). The hook bend center of the steel bar hook (1003) is on the same straight line as the axis of the transmission rod.
2. The quick tightening device for a straight threaded sleeve for reinforcing bars according to claim 1, characterized in that: The steel bar bracket (10) includes a crossbeam (1001), and human-shaped support legs (1002) are fixed at both ends of the crossbeam (1001).
3. The quick tightening device for a straight threaded sleeve for reinforcing bars according to claim 2, characterized in that: The movable ring at the end of the hook handle of the steel bar hook (1003) is fitted onto the crossbar (1001), and the hook opening of the steel bar hook (1003) is larger than the diameter of the straight threaded steel bar.
4. The quick tightening device for a straight threaded sleeve for reinforcing bars according to claim 1, characterized in that: A handling handle (1) is installed on the rear side of the motor bracket (9), and the lower end of the handling handle (1) is welded to the bottom frame of the motor bracket (9).
5. A quick tightening device for a straight threaded sleeve for reinforcing bars according to claim 4, characterized in that: The handling handrail (1) includes two identical handrail frames (101) and a handle bar (102). The lower end of the handrail frame (101) is fixed to the middle of the side edge of the bottom frame of the motor bracket (9). The lower middle part of the handrail frame (101) is fixed to the rear corner of the top frame of the motor bracket (9). The top ends of the handrail frames (101) are connected to the handle bar (102).
6. The quick tightening device for a straight threaded sleeve for reinforcing bars according to claim 1, characterized in that: The left and right sides of the top edge of the motor bracket (9) are covered by the top edge of the top plate (6).
7. A quick tightening device for a straight threaded sleeve for reinforcing bars according to claim 6, characterized in that: The supporting top plate (6) is made of insulating material, and a grounding device is connected to the bottom frame of the motor bracket (9).