Quick connecting device for reinforcing steel bars

Abstract

The invention relates to the technical field of connecting devices, and discloses a steel bar quick connecting device which comprises a bottom plate, two roller conveyors are symmetrically and fixedly installed on the upper surface of the bottom plate, a rectangular frame is fixedly installed on the upper surface of the bottom plate, and a first moving frame and a second moving frame are slidably installed on the inner wall of the rectangular frame. Fixing rings are fixedly mounted at the ends of the first moving frame and the second moving frame, clamping mechanisms are mounted on the inner walls of the two fixing rings, moving mechanisms are arranged between the rectangular frame and the first moving frame and between the rectangular frame and the second moving frame, and a limiting mechanism is mounted on the bottom plate. According to the invention, a second steel bar is conveyed to the position below the limiting mechanism by the roller conveyor, then the second mechanism is limited by the limiting mechanism, the steps of pipe feeding, steel bar feeding and connection are repeated, so that a third steel bar can be fixedly connected with the second steel bar, and continuous connection operation of a plurality of steel bars can be realized by repeating the steps.

Description

Technical Field

[0001] The invention relates to the technical field of connection devices, and in particular to a steel bar quick connection device. Background Art

[0002] Rebar connection is the main content of rebar construction. There are four main ways to connect rebar: binding lap joint, mechanical connection, sleeve grouting connection and welding. The mechanical connection of rebar usually adopts straight thread sleeve. Straight thread sleeve can transmit the axial tension or pressure of rebar. The use of rebar connection sleeve in the construction industry can greatly reduce the use of materials, and it is easy to operate, not limited by the type of rebar composition, can be prefabricated in advance, does not take up construction period, and has high processing efficiency. Moreover, straight thread sleeve has the advantages of easy connection and no need for electricity during construction. Therefore, it has been widely used in rebar connection construction.

[0003] An existing steel bar splicing connection device (publication number: CN118002719A) has at least the following disadvantages: the above patent extends one end of the threaded steel bar into the columnar space, then allows the clamp to clamp the threaded steel bar and start the motor to drive the threaded steel bar to rotate, thereby achieving the connection between the threaded steel bar and the sleeve; because the above patent can only connect two steel bars at a time, it is impossible to continuously connect and fix multiple steel bars when multiple steel beams need to be connected together continuously. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a steel bar quick connection device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A steel bar quick connection device comprises a base plate, two roller conveyors are symmetrically fixedly installed on the upper surface of the base plate, a rectangular frame is fixedly installed on the upper surface of the base plate, a first movable frame and a second movable frame are slidably installed on the inner walls of the rectangular frame, fixed rings are fixedly installed on the ends of the first movable frame and the second movable frame, clamping mechanisms are installed on the inner walls of the two fixed rings, a movable mechanism is provided between the rectangular frame and the first movable frame and the second movable frame, and a limiting mechanism is installed on the base plate.

[0006] As a further solution of the present invention, the clamping mechanism includes a clamping box, two swivels are fixedly installed on the outer surface of the clamping box, one of the swivels is rotatably installed on the inner wall of the fixed ring, guide rods are inserted into the outer surfaces of the clamping box on opposite sides, V-shaped clamps are fixedly installed on adjacent ends of the two guide rods, and a top ring is fixedly installed on the other end of the guide rod, the V-shaped clamp is slidably installed on the inner wall of the clamping box, a compression spring is sleeved on the outer surface of the guide rod, and the compression spring is arranged between the top ring and the outer side of the clamping box, and a clamping assembly is installed on the bottom plate.

[0007] As a further solution of the present invention, the clamping assembly includes two compression tubes, a fixed plate is fixedly installed on the upper surface of the base plate, a compression tube close to the first movable frame is fixedly installed on the outer surface of the fixed plate, and a trumpet tube is fixedly installed on the end portions of the two compression tubes away from the limiting mechanism, and a plurality of connecting rods are fixedly installed between the two trumpet tubes, and the two compression tubes respectively correspond to the positions of the clamping mechanism installed on the fixing ring.

[0008] As a further solution of the present invention, the moving mechanism includes a first screw rod and a second screw rod fixedly installed at the head and tail ends, the ends of the first screw rod and the second screw rod away from each other respectively penetrate the two ends of the rectangular frame and are rotatably installed therewith, the first screw rod penetrates the outer surface of the first moving frame and is threadedly connected thereto, the second screw rod penetrates the outer surface of the second moving frame and is threadedly connected thereto, the pitch of the second screw rod is greater than the pitch of the first screw rod, and a driving motor is fixedly installed on the outer surface of the rectangular frame near one end of the second screw rod, and the output end of the driving motor is fixedly installed with the rotation center of the second screw rod.

[0009] As a further solution of the present invention, a synchronous rotation mechanism is provided between the clamping mechanisms installed on the two fixed rings, and the synchronous rotation mechanism includes a mounting plate fixedly installed on the outer surface of the second movable frame on the side close to the first movable frame, and a rotating tube is rotatably installed through the outer surface of the mounting plate, and a rotating rod is installed inside the rotating tube at one end away from the second movable frame through a spline transmission, and the end of the rotating rod away from the rotating tube is rotatably installed on the outer surface of the fixed ring installed on the first movable frame, and a transmission assembly is installed between the first screw and the rotating rod.

[0010] As a further solution of the present invention, the transmission assembly includes a support plate fixedly mounted on the outer surface of the first movable frame close to the rotating rod, the rotating rod penetrates the outer surface of the support plate and is rotatably mounted therewith, the first screw rod is a hollow structure, and a transmission rod is installed inside the first screw rod through a spline transmission, one end of the transmission rod penetrates the outer surface of the support plate and is rotatably mounted therewith, pulleys are fixedly mounted on the outer surfaces of the transmission rod and the rotating rod, belts are sleeved on the outer surfaces of the two pulleys, and the two pulleys are rotatably mounted on the outer surface of the support plate.

[0011] As a further solution of the present invention, transmission gears are fixedly installed on the outer surfaces of the rotating tube and the rotating rod, and the outer surfaces of the two rotating rings installed on the adjacent sides of the two clamping boxes are respectively fixedly installed with a first gear ring and a second gear ring, and the two transmission gears are meshed with the first gear ring and the second gear ring.

[0012] As a further solution of the present invention, the limiting mechanism includes a portal frame fixedly installed on the upper surface of the base plate, a first electric telescopic rod fixedly installed on the top of the portal frame, the telescopic end of the first electric telescopic rod passes through the top of the portal frame and is fixedly installed with a limiting wheel.

[0013] As a further solution of the present invention, an upper tube mechanism is installed on the base plate, and the upper tube mechanism includes a support frame fixedly installed on the upper surface of the base plate, a second electric telescopic rod is fixedly installed on the top of the support frame, the telescopic end of the second electric telescopic rod passes through the top of the support frame and is fixedly installed with a lifting box, a limit rod is fixedly installed between the inner walls at opposite ends of the lifting box, an L-shaped plate is slidably installed on the outer surface of the limit rod, the telescopic L-shaped plate is slidably installed on the inner wall of the lifting box, a U-shaped magnetic block is fixedly installed on the end of the L-shaped plate away from the lifting box, the opening of the U-shaped magnetic block is arranged downward, a stop block is provided on the inner wall of the U-shaped magnetic block close to the L-shaped plate, and a reset spring is sleeved on the outer surface of the limit rod, and the reset spring is arranged between the inner wall of the lifting box close to one end of the first movable frame and the outer surface of the L-shaped plate.

[0014] The beneficial effects of the present invention are: 1. The second screw rod and the first screw rod are driven to rotate by a driving motor, so that the second screw rod and the first screw rod simultaneously drive the second moving frame and the first moving frame to move in the direction of the first steel bar, so that the two clamping mechanisms on the second moving frame and the first moving frame clamp the casing and the second steel bar respectively, and the rotating rod is driven to rotate through the pulley and the belt while the first screw rod rotates, so that the rotating rod can drive the rotating tube to rotate, so that the two transmission gears installed on the rotating rod and the rotating tube respectively drive the two clamping mechanisms to rotate through the first gear ring and the second gear ring, so that the casing can be threadedly connected to the tail of the first steel bar, and the end of the second steel bar can be screwed into the other end of the casing, thereby realizing automatic connection and fixation between the casing and the two steel bars; 2. After the two steel bars are connected through the sleeve, the limiting mechanism releases the limit on the first steel bar, and the second steel bar is conveyed to the bottom of the limiting mechanism by the roller conveyor. The limiting mechanism then limits the second mechanism, and the above-mentioned steps of placing the pipe, placing the steel bar and connecting are repeated, so that the third steel bar can be connected and fixed with the second steel bar. This reciprocating process can realize the continuous connection operation of multiple steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a steel bar quick connection device proposed by the present invention; Figure 2 A schematic diagram of the side view of a rectangular frame of a steel bar quick connection device proposed by the present invention; Figure 3 This is a left-side structural schematic diagram of a rectangular frame of a steel bar quick connection device proposed by the present invention; Figure 4 A schematic diagram of the structure of a clamping box of a steel bar quick connection device proposed by the present invention; Figure 5 A schematic diagram of the structure of an upper pipe mechanism of a steel bar quick connection device proposed by the present invention; Figure 6 A schematic diagram of the structure of a clamping assembly of a steel bar quick connection device proposed by the present invention; Figure 7 A schematic diagram of the structure of a limiting mechanism of a steel bar quick connection device proposed by the present invention; Figure 8 for Figure 2 A magnified view of the structure at center; Fig. 9 for Figure 3 Enlarged view of the structure at point B in the middle.

[0016] In the figure: 1, bottom plate; 2, roller conveyor; 3, rectangular frame; 4, first mobile frame; 5, second mobile frame; 6, fixed ring; 7, clamping box; 8, rotating ring; 9, guide rod; 10, V-shaped clamp block; 11, top ring; 12, compression spring; 13, first screw rod; 14, second screw rod; 15, first gear ring; 16, second gear ring; 17, mounting plate; 18, support plate; 19, rotating rod; 20, transmission rod; 21. Rotating tube; 22. Transmission gear; 23. Pulley; 24. Belt; 25. Support frame; 26. Second electric telescopic rod; 27. Lifting box; 28. Limit rod; 29. ​​L-shaped plate; 30. U-shaped magnetic block; 31. Return spring; 32. Fixed plate; 33. Compression tube; 34. Speaker tube; 35. Connecting rod; 36. Door frame; 37. First electric telescopic rod; 38. Driving motor; 39. Limit wheel. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] See attached Figure 1 -Attached Fig. 9 A steel bar quick connection device comprises a base plate 1, two roller conveyors 2 are symmetrically fixedly installed on the upper surface of the base plate 1, a rectangular frame 3 is fixedly installed on the upper surface of the base plate 1, a first movable frame 4 and a second movable frame 5 are slidably installed on the inner walls of the rectangular frame 3, a fixing ring 6 is fixedly installed at the ends of the first movable frame 4 and the second movable frame 5, a clamping mechanism is installed on the inner walls of the two fixing rings 6, a moving mechanism is provided between the rectangular frame 3 and the first movable frame 4 and the second movable frame 5, and a limiting mechanism is installed on the base plate 1.

[0020] In this embodiment, the clamping mechanism includes a clamping box 7, and two swivels 8 are fixedly installed on the outer surface of the clamping box 7, one of the swivels 8 is rotatably installed with the inner wall of the fixed ring 6, and guide rods 9 are inserted into the outer surfaces of the opposite sides of the clamping box 7, and the adjacent ends of the two guide rods 9 are fixedly installed with V-shaped clamps 10, and the other ends of the guide rods 9 are fixedly installed with top rings 11, and the V-shaped clamps 10 are slidably installed with the inner wall of the clamping box 7, and the outer surface of the guide rods 9 is sleeved with compression springs 12, and the compression springs 12 are arranged between the top ring 11 and the outer side of the clamping box 7. A clamping assembly is installed on the bottom plate 1, and the clamping assembly includes two compression tubes 33, and a fixed plate 32 is fixedly installed on the upper surface of the bottom plate 1, and a compression tube 33 close to the first movable frame 4 is fixedly installed on the outer surface of the fixed plate 32, and the ends of the two compression tubes 33 away from the limiting mechanism are fixedly installed with trumpet tubes 34, and multiple connecting rods 35 are fixedly installed between the two trumpet tubes 34, and the two compression tubes 33 respectively correspond to the positions of the clamping mechanism installed on the fixed ring 6.

[0021] When in use, the first mobile frame 4 and the second mobile frame 5 push the clamping box 7 toward the inside of the compression tube 33 through the swivel 8, so that the top ring 11 installed on the clamping box 7 abuts against the inner wall of the bell tube 34, and push the two V-shaped clamps 10 toward each other through the guide rod 9, so that the two V-shaped clamps 10 can clamp the sleeve or the steel bar, so that the swivel 8 drives the sleeve or the steel bar to rotate synchronously when driving the clamping box 7 to rotate.

[0022] In this embodiment, the moving mechanism includes a first screw rod 13 and a second screw rod 14 which are fixedly installed at the head and tail ends. The ends of the first screw rod 13 and the second screw rod 14 that are away from each other respectively penetrate the two ends of the rectangular frame 3 and are rotatably installed therewith. The first screw rod 13 penetrates the outer surface of the first moving frame 4 and is threadedly connected thereto. The second screw rod 14 penetrates the outer surface of the second moving frame 5 and is threadedly connected thereto. The pitch of the second screw rod 14 is greater than the pitch of the first screw rod 13, so that the moving speed of the second moving frame 5 is greater than the speed of the first moving frame 4, so that the second steel bar can be docked with the casing; a drive motor 38 is fixedly installed on the outer surface of the rectangular frame 3 near one end of the second screw rod 14, and the output end of the drive motor 38 is fixedly installed with the rotation center of the second screw rod 14.

[0023] In this embodiment, a synchronous rotation mechanism is provided between the clamping mechanisms installed on the two fixed rings 6, and the synchronous rotation mechanism includes a mounting plate 17 fixedly installed on the outer surface of the second movable frame 5 close to the first movable frame 4. A rotating tube 21 is rotatably installed on the outer surface of the mounting plate 17. A rotating rod 19 is installed inside the rotating tube 21 away from the end of the second movable frame 5 through a spline transmission. The end of the rotating rod 19 away from the rotating tube 21 is rotatably installed on the outer surface of the fixed ring 6 installed on the first movable frame 4, and a transmission assembly is installed between the first screw rod 13 and the rotating rod 19.

[0024] In this embodiment, the transmission assembly includes a support plate 18 fixedly mounted on the outer surface of the first movable frame 4 close to the rotating rod 19. The rotating rod 19 penetrates the outer surface of the support plate 18 and is rotatably mounted therewith. The first screw rod 13 is a hollow structure, and a transmission rod 20 is installed inside the first screw rod 13 through a spline transmission. One end of the transmission rod 20 penetrates the outer surface of the support plate 18 and is rotatably mounted therewith. Pulleys 23 are fixedly mounted on the outer surfaces of the transmission rod 20 and the rotating rod 19. Belts 24 are sleeved on the outer surfaces of the two pulleys 23, and the two pulleys 23 are rotatably mounted on the outer surface of the support plate 18.

[0025] In this embodiment, transmission gears 22 are fixedly installed on the outer surfaces of the rotating tube 21 and the rotating rod 19, and the outer surfaces of the two rotating rings 8 installed on the adjacent side of the two clamping boxes 7 are respectively fixedly installed with the first gear ring 15 and the second gear ring 16, and the two transmission gears 22 are meshed with the first gear ring 15 and the second gear ring 16.

[0026] In this embodiment, the limiting mechanism includes a door frame 36 fixedly mounted on the upper surface of the base plate 1, and a first electric telescopic rod 37 is fixedly mounted on the top of the door frame 36. The telescopic end of the first electric telescopic rod 37 passes through the top of the door frame 36 and is fixedly mounted with a limiting wheel 39.

[0027] In this embodiment, an upper tube mechanism is installed on the base plate 1, and the upper tube mechanism includes a support frame 25 fixedly installed on the upper surface of the base plate 1, a second electric telescopic rod 26 is fixedly installed on the top of the support frame 25, the telescopic end of the second electric telescopic rod 26 passes through the top of the support frame 25 and is fixedly installed with a lifting box 27, a limit rod 28 is fixedly installed between the inner walls of the opposite ends of the lifting box 27, an L-shaped plate 29 is slidably installed on the outer surface of the limit rod 28, and the telescopic L-shaped plate 29 is slidably installed with the inner wall of the lifting box 27, and a U-shaped magnetic block 30 is fixedly installed on the end of the L-shaped plate 29 away from the lifting box 27, the opening of the U-shaped magnetic block 30 is set downward, and a stopper is provided on the inner wall of the U-shaped magnetic block 30 close to the L-shaped plate 29, and a reset spring 31 is sleeved on the outer surface of the limit rod 28, and the reset spring 31 is set between the inner wall of the lifting box 27 close to the end of the first movable frame 4 and the outer surface of the L-shaped plate 29.

[0028] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: when in use, the first steel bar to be connected is placed on the roller conveyor 2 on the limiting mechanism, and the steel bar is pressed and limited by the limiting mechanism. At this time, the sleeve used to connect the two steel bars is clamped in the U-shaped magnetic block 30, and the lifting box 27, the L-shaped plate 29 and the U-shaped magnetic block 30 are driven by the second electric telescopic rod 26 to move downward as a whole to between the first mobile frame 4 and the second mobile frame 5. After the sleeve moves into place, the U-shaped magnetic block 30 will generate magnetic attraction with the V-shaped clamping block 10 installed on the first mobile frame 4, so that the U-shaped magnetic block 30 can drive the sleeve to be inserted between the two V-shaped clamping blocks 10, and the U-shaped magnetic block 30 is adsorbed on the V-shaped clamping block 10, so that the subsequent two V-shaped clamping blocks 10 clamp the sleeve; After the sleeve is placed, the second steel bar is placed on the roller conveyor 2 away from the limiting mechanism, so that the end of the second steel bar is placed between the two V-shaped clamps 10 on the second mobile frame 5, and the end of the second steel bar is abutted against the sleeve; The second screw rod 14 and the first screw rod 13 are driven to rotate by the driving motor 38, so that the second screw rod 14 and the first screw rod 13 simultaneously drive the second mobile frame 5 and the first mobile frame 4 to move in the direction of the first steel bar, so that the two clamping mechanisms on the second mobile frame 5 and the first mobile frame 4 respectively clamp the sleeve and the second steel bar, and while the first screw rod 13 rotates, the rotating rod 19 is driven to rotate through the pulley 23 and the belt 24, so that the rotating rod 19 can drive the rotating tube 21 to rotate, so that the two transmission gears 22 installed on the rotating rod 19 and the rotating tube 21 respectively drive the two clamping mechanisms to rotate through the first gear ring 15 and the second gear ring 16, so that the sleeve can be threadedly connected to the tail of the first steel bar, and the end of the second steel bar can be screwed into the other end of the sleeve, thereby realizing automatic connection and fixation between the sleeve and the two steel bars; After the two steel bars are connected through the sleeve, the limiting mechanism releases the limit on the first steel bar, and the roller conveyor 2 conveys the second steel bar to the bottom of the limiting mechanism, and then the limiting mechanism limits the second mechanism, and repeats the above-mentioned steps of placing the pipe, placing the steel bars and connecting, so that the third steel bar can be connected and fixed to the second steel bar, and this reciprocating process can realize the continuous connection operation of multiple steel bars.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A steel bar quick connection device, comprising a base plate (1), wherein two roller conveyors (2) are symmetrically fixedly mounted on the upper surface of the base plate (1), characterized in that: A rectangular frame (3) is fixedly mounted on the upper surface of the bottom plate (1); a first movable frame (4) and a second movable frame (5) are slidably mounted on the inner wall of the rectangular frame (3); fixed rings (6) are fixedly mounted on the ends of the first movable frame (4) and the second movable frame (5); clamping mechanisms are mounted on the inner walls of the two fixed rings (6); a movable mechanism is arranged between the rectangular frame (3) and the first movable frame (4) and the second movable frame (5); and a limiting mechanism is mounted on the bottom plate (1).

2. A steel bar quick connection device according to claim 1, characterized in that: The clamping mechanism comprises a clamping box (7), the outer surface of which is fixedly mounted two rotating rings (8), one of which is rotatably mounted on the inner wall of the fixed ring (6), guide rods (9) are inserted into the outer surfaces of the clamping box (7) on opposite sides, and V-shaped clamping blocks (10) are fixedly mounted on adjacent ends of the two guide rods (9), and a top ring (11) is fixedly mounted on the other ends of the guide rods (9), and the V-shaped clamping blocks (10) are slidably mounted on the inner wall of the clamping box (7), and a compression spring (12) is sleeved on the outer surface of the guide rod (9), and the compression spring (12) is arranged between the top ring (11) and the outer side of the clamping box (7), and a clamping assembly is installed on the bottom plate (1).

3. A steel bar quick connection device according to claim 2, characterized in that: The clamping assembly comprises two compression tubes (33), a fixing plate (32) is fixedly mounted on the upper surface of the bottom plate (1), a compression tube (33) close to the first movable frame (4) is fixedly mounted on the outer surface of the fixing plate (32), a trumpet tube (34) is fixedly mounted on the end portions of the two compression tubes (33) away from the limiting mechanism, a plurality of connecting rods (35) are fixedly mounted between the two trumpet tubes (34), and the two compression tubes (33) respectively correspond to the positions of the clamping mechanisms mounted on the fixing ring (6).

4. A steel bar quick connection device according to claim 3, characterized in that: The moving mechanism comprises a first screw rod (13) and a second screw rod (14) which are fixedly mounted at their ends, the ends of the first screw rod (13) and the second screw rod (14) being away from each other respectively passing through two ends of a rectangular frame (3) and being rotatably mounted thereon, the first screw rod (13) passing through the outer surface of the first moving frame (4) and being threadedly connected thereto, the second screw rod (14) passing through the outer surface of the second moving frame (5) and being threadedly connected thereto, the pitch of the second screw rod (14) being greater than the pitch of the first screw rod (13), and a driving motor (38) being fixedly mounted on the outer surface of the rectangular frame (3) near one end of the second screw rod (14), the output end of the driving motor (38) being fixedly mounted to the rotation center of the second screw rod (14).

5. A steel bar quick connection device according to claim 4, characterized in that: A synchronous rotation mechanism is provided between the clamping mechanisms installed on the two fixed rings (6), and the synchronous rotation mechanism comprises a mounting plate (17) fixedly mounted on the outer surface of the second movable frame (5) close to the first movable frame (4), a rotating tube (21) is rotatably mounted through the outer surface of the mounting plate (17), a rotating rod (19) is installed inside the rotating tube (21) at one end away from the second movable frame (5) through a spline transmission, and the end of the rotating rod (19) away from the rotating tube (21) is rotatably mounted on the outer surface of the fixed ring (6) installed on the first movable frame (4), and a transmission assembly is installed between the first screw rod (13) and the rotating rod (19).

6. A steel bar quick connection device according to claim 5, characterized in that: The transmission assembly comprises a support plate (18) fixedly mounted on the outer surface of a side of the first mobile frame (4) close to the rotating rod (19); the rotating rod (19) penetrates the outer surface of the support plate (18) and is rotatably mounted thereon; the first screw rod (13) is a hollow structure, and a transmission rod (20) is mounted inside the first screw rod (13) via a spline transmission; one end of the transmission rod (20) penetrates the outer surface of the support plate (18) and is rotatably mounted thereon; pulleys (23) are fixedly mounted on the outer surfaces of the transmission rod (20) and the rotating rod (19); belts (24) are sleeved on the outer surfaces of the two pulleys (23), and the two pulleys (23) are rotatably mounted on the outer surface of the support plate (18).

7. A steel bar quick connection device according to any one of claims 1 to 6, characterized in that: Transmission gears (22) are fixedly mounted on the outer surfaces of the rotating tube (21) and the rotating rod (19), and a first gear ring (15) and a second gear ring (16) are fixedly mounted on the outer surfaces of two rotating rings (8) mounted on adjacent sides of the two clamping boxes (7), respectively, and the two transmission gears (22) are meshed with the first gear ring (15) and the second gear ring (16).

8. A steel bar quick connection device according to claim 1, characterized in that: The limiting mechanism comprises a door frame (36) fixedly mounted on the upper surface of the base plate (1), a first electric telescopic rod (37) fixedly mounted on the top of the door frame (36), a telescopic end of the first electric telescopic rod (37) passing through the top of the door frame (36) and fixedly mounted with a limiting wheel (39).

9. A steel bar quick connection device according to claim 1, characterized in that: An upper tube mechanism is installed on the bottom plate (1), and the upper tube mechanism comprises a support frame (25) fixedly installed on the upper surface of the bottom plate (1), a second electric telescopic rod (26) is fixedly installed on the top of the support frame (25), the telescopic end of the second electric telescopic rod (26) passes through the top of the support frame (25) and is fixedly installed with a lifting box (27), a limit rod (28) is fixedly installed between the inner walls of the two opposite ends of the lifting box (27), an L-shaped plate (29) is slidably installed on the outer surface of the limit rod (28), and the telescopic L The L-shaped plate (29) is slidably mounted on the inner wall of the lifting box (27); a U-shaped magnetic block (30) is fixedly mounted on one end of the L-shaped plate (29) away from the lifting box (27); the opening of the U-shaped magnetic block (30) is arranged downward; a stopper is arranged on the inner wall of the U-shaped magnetic block (30) close to the L-shaped plate (29); a return spring (31) is sleeved on the outer surface of the limit rod (28); and the return spring (31) is arranged between the inner wall of the lifting box (27) close to the first movable frame (4) and the outer surface of the L-shaped plate (29).

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