Spindle-shaped guide strand pulling device for slab joint reinforcing steel bars

Abstract

The invention relates to the technical field of slab joint steel bar construction, and discloses a slab joint steel bar spindle-shaped guiding and strand penetrating device which comprises a steel bar body needing to penetrate into a frame stirrup, the front end of the steel bar body is connected with a steel bar penetrating device, and the whole steel bar penetrating device is of a spindle-shaped structure. A propeller placed on the ground is arranged below the steel bar body, the propeller pushes the steel bar body to penetrate into the frame stirrup, moving rollers are rotationally installed on the side face of the propeller, and a connecting column is rotationally installed in the propeller. A reinforcing steel bar body is clamped between the two propelling rollers, the propelling rollers rotate to propel the reinforcing steel bar body to achieve the automatic reinforcing steel bar penetrating purpose, in the process, the spindle-shaped reinforcing steel bar penetrating device is used for replacing manual guiding in the front, the propeller is used for replacing a plurality of workers forcibly pushing in the rear, few-person construction is achieved, and the construction efficiency is improved. The length of the spindle-shaped rib penetrating device is larger than the distance between two frame stirrups, and therefore it can be guaranteed that staggered rib penetrating is avoided.

Description

Technical Field

[0001] This invention relates to the field of slab joint reinforcement construction technology, specifically a spindle-shaped guide and threading device for slab joint reinforcement. Background Technology

[0002] Slab joint reinforcement construction refers to the placement of reinforcing bars in the gap between two adjacent cast-in-place concrete slabs according to design and specification requirements, and their reliable connection with the reinforcing bars on both sides of the slab. Traditionally, for slab joint reinforcement, one worker would use a small hook shaped like a golf club to adjust and guide the position of the reinforcing bar at the head as the reinforcement is being inserted, while many other workers would push the reinforcing bar inward with force. It would take at least 6 people to push large diameter reinforcing bars such as 28mm and 32mm.

[0003] As in the prior art, Chinese patent application number CN202010804702.0 discloses a rebar bending machine for inserting rebar mesh, including a frame, on which a gripping mechanism, an oblique insertion clamping mechanism, and a bending mechanism are fixedly installed. The angle between the gripping mechanism and the oblique insertion clamping mechanism is 45°, and the angle between the gripping mechanism and the bending mechanism is 90°. The gripping mechanism can clamp the rebar using a frame-type electromagnet and pull the rebar to a preset position by its own movement. The oblique insertion clamping mechanism has a large rigidity and can extend into the rebar mesh at a 45° angle, so that the rebar enters the clamping groove, ensuring that the main body of the rebar does not rotate with the rebar during the bending process. The bending mechanism can move perpendicular to the rebar insertion direction and bends the rebar using a fourth drive motor and gears.

[0004] For example, in the prior art, Chinese patent application number CN202310081293.X discloses an automatic rebar threading and positioning device for longitudinal rebars of a slab component rebar cage, including a raw material storage device and a rebar binding frame. A rebar straightening and shearing device is provided between the raw material storage device and the rebar binding frame. The rebar straightening and shearing device includes a track, a transport trolley, a rebar straightening machine, and a rebar shearing machine. The rebar binding frame includes at least two transverse rebar fixing plates and at least two supporting beams set between every two transverse rebar fixing plates. Each transverse rebar fixing plate is set perpendicular to the raw material rebar pushed into the rebar binding frame, and a first positioning groove is provided on it corresponding to each raw material rebar. Each supporting beam is set parallel to the raw material rebar and has multiple second positioning grooves for positioning transverse rebars perpendicular to the raw material rebars. These are set on a lifting device and driven by the lifting device to move back and forth in the vertical direction.

[0005] For example, in the prior art, Chinese patent application number CN201910094490.9 discloses a pipe-threading device for a rebar cage, including a guide and a reel-in device. The reel-in device is connected to one end of the rebar cage and is connected to the guide via a traction rope. The guide includes a support frame and a pipe clamping device. The outer diameter of the support frame gradually increases from both ends to the middle. One end of the support frame is connected to the traction rope, and the other end of the support frame is connected to the pipe clamping device. The pipe clamping device is located inside the support frame and can clamp multiple grouting pipes or sonic logging pipes at one time. The reel-in device automatically pulls the pipes at the other end of the rebar cage, achieving automatic pipe threading of multiple pipes at one time while ensuring smooth pipe threading.

[0006] Based on the above information, it can be seen that existing rebar threading equipment generally uses a propulsion device to move the rebar to achieve the purpose of automatic threading. However, in actual use, the head of the rebar may fall due to gravity when it is threaded, which can easily cause it to get stuck. Summary of the Invention

[0007] The purpose of this invention is to provide a spindle-shaped guide and threading device for steel bars in slab joints, so as to solve the problem of the steel bar head getting stuck due to falling as mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A spindle-shaped guide for threading reinforcing bars in slab joints includes a main body of reinforcing bars to be threaded into frame stirrups. The front end of the main body is connected to a threader, which is configured as a spindle shape. A pusher is placed on the ground below the main body of the reinforcing bars, which pushes the main body of the reinforcing bars into the frame stirrups. A movable roller is rotatably mounted on the side of the pusher, and a connecting column is rotatably mounted inside the pusher. The upper end of the connecting column is connected to the pusher roller via a disassembly and installation mechanism. The rotation of the pusher roller pushes the main body of the reinforcing bars to achieve automatic threading. The pusher consists of a first housing and a second housing, with an adjustment mechanism between them to change the distance between them. A connecting sleeve is installed at the rear end of the threader, and the front end of the main body of the reinforcing bars is inserted into the connecting sleeve. A fixing bolt is threaded on the side of the connecting sleeve to fix the main body of the reinforcing bars. The fixing bolt connects the front end of the main body of the reinforcing bars to the connecting sleeve, thereby realizing the installation of the threader.

[0010] Preferably, the disassembly and installation mechanism includes an installation column fixedly installed on the upper end of the connecting column, and the installation column is inserted into the installation hole opened on the lower surface of the push roller to form a locking. A suitable push roller is selected according to the actual needs of the main steel bar body, and then the push roller is replaced by inserting and locking between the installation hole below the push roller and the installation column above the connecting column.

[0011] Preferably, both the mounting column and the mounting hole are square structures, and a driven worm gear for driving its rotation is fixedly installed on the lower external side of the connecting column. The driven worm gear is meshed with a driving worm that is rotatably installed with the pusher. The driving worm is driven to rotate by a drive motor fixedly installed outside the pusher. The drive motor drives the driving worm to rotate, and the driven worm gear meshing with the driving worm drives the connecting column to rotate, thereby causing the connecting column to drive the pusher roller to rotate, achieving the purpose of pushing the main body of the reinforcing bar.

[0012] Preferably, the adjustment mechanism includes a connecting rod located above the first housing and the second housing, and the connecting rod has a limiting groove with a strip-shaped structure inside. The limiting groove and the connecting block form a sliding structure. There are two connecting blocks, which are threaded to the upper surfaces of the first housing and the second housing respectively. The connecting blocks slide relative to each other in the limiting groove inside the connecting rod, and the specific spacing is determined by the cooperation between the positioning mark and the scale. Finally, the connecting blocks are tightened to fix them.

[0013] Preferably, a positioning mark is fixedly installed on the upper surface of the connecting block, and the positioning mark corresponds to the position of the scale. The scale is fixedly installed on the upper surface of the connecting rod, and the specific spacing value is determined by the correspondence between the positioning mark and the scale.

[0014] Preferably, an adjusting cylinder is rotatably installed between the rebar threader and the connecting sleeve, and four adjusting cylinders are symmetrically arranged. A control air pump is fixedly installed on the outer surface of the rear end of the rebar threader, and the control air pump is connected to the adjusting cylinder through a connecting hose. The control air pump fills the corresponding adjusting cylinder with air through the connecting hose, thereby controlling the length of the adjusting cylinder. Finally, the direction of the rebar threader is changed by adjusting the length of the opposing adjusting cylinders to ensure that the rebar threader is in the middle position.

[0015] Preferably, the opposing adjusting cylinders extend and retract to control the left, right and pitch angles of the rebar threader, and the length of the rebar threader is greater than the distance between two adjacent frame stirrups. The spindle-shaped rebar threader replaces the manual guidance in front, and the pusher replaces the multiple workers pushing from behind, achieving less manpower construction. The length of the spindle-shaped rebar threader must be greater than the distance between the two frame stirrups to ensure that the rebar is not misaligned.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the spindle-shaped guide and threading device for steel reinforcement in slab joints adopts a novel structural design, the specific details of which are as follows:

[0017] 1. Connect the front end of the main body of the steel bar to the connecting sleeve using fixing bolts to install the rebar threader. Then, clamp the main body of the steel bar between two push rollers. Use the rotation of the push rollers to push the main body of the steel bar to achieve the purpose of automatic rebar threading. In this process, the spindle-shaped rebar threader replaces the manual guidance at the front, and the pusher replaces the multiple workers who push hard at the back, realizing less manpower construction. The length of the spindle-shaped rebar threader should be greater than the spacing between the two frame stirrups to ensure that the rebar is not misaligned.

[0018] Furthermore, when the propeller is working, the drive motor is turned on, which drives the active worm gear to rotate. At this time, the driven worm wheel, which is meshed with the active worm gear, drives the connecting column to rotate, thereby causing the connecting column to drive the propulsion roller to rotate, so as to achieve the purpose of propulsing the main body of the steel bar.

[0019] 2. A disassembly and installation mechanism is set between the connecting column and the push roller. Before using the pusher, select the appropriate push roller according to the actual needs of the main steel reinforcement. Then, use the mounting hole below the push roller to insert and engage with the mounting column above the connecting column to replace the push roller.

[0020] Furthermore, the thruster is divided into two parts: a first housing and a second housing. An adjustment mechanism is provided between the first housing and the second housing to change the distance between them. At this time, the connecting block slides relative to the limiting groove opened inside the connecting rod, and the specific distance is determined by the cooperation between the positioning mark and the scale. Finally, the connecting block is tightened to fix it.

[0021] 3. An adjusting cylinder is installed between the rebar threader and the connecting sleeve. The control air pump at the rear end of the rebar threader is turned on. At this time, the control air pump fills the corresponding adjusting cylinder with air through the connecting hose, thereby controlling the length of the adjusting cylinder. Finally, the direction of the rebar threader is changed by adjusting the length of the opposing adjusting cylinder to ensure that the rebar threader is in the middle position. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall working structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the installation relationship between the propeller and the rib-piercing device of the present invention;

[0024] Figure 3 This is a schematic diagram of the thruster structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the thruster of the present invention;

[0026] Figure 5 This is a schematic diagram of the lower surface structure of the propulsion roller of the present invention;

[0027] Figure 6 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0028] Figure 7 This is a schematic diagram of the connecting sleeve structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the rebar threading device of the present invention;

[0030] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B.

[0031] In the diagram: 1. Main steel reinforcement; 2. Frame stirrups; 3. Reinforcement threader; 4. Pusher; 401. First housing; 402. Second housing; 5. Moving roller; 6. Pushing roller; 7. Connecting column; 8. Driven worm gear; 9. Driving worm; 10. Drive motor; 11. Mounting column; 12. Mounting hole; 13. Connecting rod; 14. Limiting groove; 15. Connecting block; 16. Positioning mark; 17. Scale; 18. Connecting sleeve; 19. Fixing bolt; 20. Adjusting cylinder; 21. Control air pump; 22. Connecting hose. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figures 1-4 and Figure 7In order to achieve automatic rebar threading and prevent displacement, this embodiment provides the following technical solution, specifically: a rebar body 1 that needs to be threaded into the frame stirrup 2, the front end of the rebar body 1 is connected to the rebar threader 3, and the rebar threader 3 is set as a spindle-shaped structure. A pusher 4 placed on the ground is set below the rebar body 1. The pusher 4 pushes the rebar body 1 into the frame stirrup 2. A movable roller 5 is rotatably installed on the side of the pusher 4. A connecting column 7 is rotatably installed inside the pusher 4. The upper end of the connecting column 7 is connected to the pusher roller 6 through a disassembly and installation mechanism. A driven worm gear 8 for driving its rotation is fixedly installed on the lower end of the connecting column 7. A driving worm 9 rotatably installed on the side of the driven worm gear 8 is meshed with the pusher 4. The driving worm 9 is driven to rotate by a drive motor 10 fixedly installed outside the pusher 4. A connecting sleeve 18 is installed at the rear end of the rebar threader 3. The front end of the rebar body 1 is inserted into the connecting sleeve 18. A fixing bolt 19 for fixing the rebar body 1 is threaded on the side of the connecting sleeve 18.

[0034] When using the device, first insert the front end of the steel bar body 1 into the hole of the connecting sleeve 18, then tighten the fixing bolt 19 to fix the steel bar body 1 and the connecting sleeve 18, thereby realizing the installation between the rebar threader 3 and the steel bar body 1. Then, clamp the steel bar body 1 between the two pushing rollers 6 above the pusher 4, and put the rebar threader 3 into the frame stirrup 2 that needs to be threaded. Then turn on the drive motor 10 outside the pusher 4, and use the drive motor 10 to drive the active worm gear 9 to rotate. At this time, the driven worm wheel 8, which is meshed with the active worm gear 9, drives the connecting column 7 to rotate. The connecting column 7 drives the pushing rollers 6 to rotate. The friction between the pushing rollers 6 and the steel bar body 1 pushes the steel bar body 1 forward, achieving the purpose of automatic rebar threading. In this process, the spindle-shaped rebar threader 3 replaces the manual guidance at the front, and the pusher 4 replaces the multiple workers who push hard at the back, realizing less manpower construction. The length of the spindle-shaped rebar threader 3 should be greater than the distance between the two frame stirrups 2 to ensure that the rebar is not misaligned.

[0035] Example 2: Please refer to Figures 5-6In order to adapt to steel bars of different sizes, this embodiment provides the following technical solution, specifically: The disassembly and installation mechanism includes an installation column 11 fixedly installed on the upper end of the connecting column 7, and the installation column 11 is inserted into the installation hole 12 opened on the lower surface of the push roller 6 to form a locking. Both the installation column 11 and the installation hole 12 are set as square structures. The pusher 4 is composed of two parts: a first housing 401 and a second housing 402. An adjustment mechanism is provided between the first housing 401 and the second housing 402. The adjustment mechanism includes a connecting rod 13 located above the first housing 401 and the second housing 402. The connecting rod 13 has a limiting groove 14 with a strip structure inside. The limiting groove 14 and the connecting block 15 form a sliding structure. There are two connecting blocks 15, which are threadedly connected to the upper surfaces of the first housing 401 and the second housing 402 respectively. A positioning mark 16 is fixedly installed on the upper surface of the connecting block 15, and the positioning mark 16 corresponds to the position of the scale 17. The scale 17 is fixedly installed on the upper surface of the connecting rod 13.

[0036] When operating on steel reinforcement bodies 1 of different sizes, first remove the push roller 6 from the upper end of the connecting column 7. Then, select the appropriate push roller 6 according to the specific size of the steel reinforcement body 1. Align the mounting hole 12 below the push roller 6 with the mounting column 11 at the upper end of the connecting column 7 and insert them to form a locking mechanism, thereby replacing the push roller 6. Then, tighten the connecting block 15 to loosen the connection between the connecting rod 13 and the pusher 4 (the two are threadedly connected, and tightening the connecting block 15 can loosen or fix them). Next, adjust the distance between the first housing 401 and the second housing 402. During the adjustment process, the connecting block 15 slides in the limiting groove 14 opened inside the connecting rod 13, and the specific spacing value is determined by the correspondence between the positioning mark 16 and the scale 17. After the spacing is adjusted, tighten the connecting block 15 again. Finally, by adjusting the spacing and replacing the push roller 6, the device can adapt to steel reinforcement bodies 1 of different sizes.

[0037] Example 3: Please refer to Figures 7-9 In order to ensure the orientation of the rebar threader 3, this embodiment provides the following technical solution, which specifically discloses that: an adjusting cylinder 20 is rotatably installed between the rebar threader 3 and the connecting sleeve 18, and four adjusting cylinders 20 are symmetrically arranged. A control air pump 21 is fixedly installed on the outer surface of the rear end of the rebar threader 3, and the control air pump 21 is connected to the adjusting cylinder 20 through a connecting hose 22. The opposing adjusting cylinders 20 control the left and right and pitch angles of the rebar threader 3 by extension and retraction, and the length of the rebar threader 3 is greater than the spacing between two adjacent frame stirrups 2.

[0038] During the rebar insertion process, the control air pump 21 is activated when there is a deviation based on the position and angle of the rebar inserter 3. At this time, the control air pump 21 delivers gas to the corresponding adjusting cylinder 20 through the connecting hose 22, thereby controlling the length of the adjusting cylinder 20. By adjusting the length of the opposing adjusting cylinder 20, the direction of the rebar inserter 3 is changed, thus preventing the rebar inserter 3 from getting stuck.

[0039] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plate joint reinforcement bar spindle guide threading device comprising a reinforcement bar body (1) which needs to be threaded into a frame hoop (2), characterized in that: The front end of the reinforcing bar body (1) is connected with a reinforcing bar penetrating device (3), the reinforcing bar penetrating device (3) is integrally provided in a spindle structure, and a propeller (4) is arranged below the reinforcing bar body (1) and placed on the ground; the propeller (4) drives the reinforcing bar body (1) to penetrate into a frame stirrup (2), and a moving roller (5) is rotatably arranged on the side of the propeller (4). A connecting column (7) is rotatably arranged in the propeller (4), the upper end of the connecting column (7) is connected with a propelling roller (6) through a detachable mounting mechanism, and the propeller (4) is composed of a first shell (401) and a second shell (402); an adjusting mechanism is arranged between the first shell (401) and the second shell (402). A connecting sleeve (18) is arranged at the rear end of the reinforcing bar penetrating device (3), the front end of the reinforcing bar body (1) is inserted into the connecting sleeve (18), and a fixing bolt (19) is screwedly arranged on the side of the connecting sleeve (18) and used for fixing the reinforcing bar body (1).

2. A plate joint steel bar spooling guide threading device as claimed in claim 1, wherein: The detachable mounting mechanism comprises a mounting column (11) fixedly arranged on the upper end of the connecting column (7), and the mounting column (11) is inserted into a mounting hole (12) formed in the lower surface of the propelling roller (6) to form a clamping structure.

3. A plate joint steel bar spooling guide threading device as claimed in claim 2, wherein: The mounting column (11) and the mounting hole (12) are both provided in a square structure, and a driven worm gear (8) is fixedly arranged on the lower end of the connecting column (7) and used for driving the rotation of the connecting column (7).

4. A plate joint reinforcement spooling guide threading device as defined in claim 3, wherein: The driven worm gear (8) is rotatably arranged on the side of the propeller (4) and engaged with a driving worm (9) of the propeller (4), and the driving worm (9) is driven to rotate by a driving motor (10) fixedly arranged on the outer side of the propeller (4).

5. A plate joint steel bar spooling guide threading device as claimed in claim 1, wherein: The adjusting mechanism comprises a connecting rod (13) arranged above the first shell (401) and the second shell (402), and a limiting sliding groove (14) in a strip structure is formed in the connecting rod (13).

6. A plate joint reinforcement spooling guide threading device as defined in claim 5, wherein: A sliding structure is formed between the limiting sliding groove (14) and a connecting block (15), and the connecting block (15) is provided with two connecting blocks and is screwedly connected with the upper surfaces of the first shell (401) and the second shell (402).

7. A plate joint reinforcement spooling guide threading device as defined in claim 6, wherein: A positioning mark (16) is fixedly arranged on the upper surface of the connecting block (15), the positioning mark (16) corresponds to a scale (17) in position, and the scale (17) is fixedly arranged on the upper surface of the connecting rod (13).

8. A plate joint steel bar spooling guide threading device as claimed in claim 1, wherein: Adjusting cylinders (20) are rotatably arranged between the reinforcing bar penetrating device (3) and the connecting sleeve (18), and the adjusting cylinders (20) are symmetrically arranged.

9. A plate joint reinforcement spooling guide threading device as defined in claim 8, wherein: A control air pump (21) is fixedly arranged on the outer surface of the rear end of the reinforcing bar penetrating device (3), and the control air pump (21) is communicated with the adjusting cylinders (20) through a connecting hose (22).

10. A plate joint reinforcement spooling guide threading device as defined in claim 9, wherein: Opposite adjusting cylinders (20) correspondingly extend and retract to control the left-right and pitch angles of the reinforcing bar penetrating device (3), and the length of the reinforcing bar penetrating device (3) is greater than the distance between two adjacent frame stirrups (2).

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