A rebar binding device for confined spaces

Abstract

This invention discloses a rebar tying device for confined spaces, relating to the field of rebar tying. It includes two horizontal beams, one and two horizontal beams, with both ends of the two horizontal beams two fixedly connected to the ends of the two horizontal beams one. A motor is fixedly installed on the opposite sides of the two horizontal beams two, and a track is mounted on each opposite side of the two horizontal beams two via the motor. A displacement device for changing the position of the tying device is provided between the two horizontal beams two. A vertical plate is positioned between the two horizontal beams two, with both ends fixedly connected to adjacent sides of the two horizontal beams two. A receiving groove is provided on one side of the vertical plate. This invention precisely controls the position of the housing and the rebar intersection by controlling the distance between adjacent pressure blocks. When the housing moves laterally along the receiving groove, it facilitates the sequential tying of multiple rebar intersections on the same horizontal line, reducing the time and effort required for rebar tying.

Description

Technical Field

[0001] This invention relates to the field of rebar tying, specifically a rebar tying device for confined spaces. Background Technology

[0002] In construction projects, steel bars are often interwoven and tied into a grid before concrete is poured to form a robust reinforced concrete structure. The intersections of these steel bar grids must be secured with tie wire.

[0003] When binding rebar mesh, manual hand-held rebar binding machines are generally used to bind the rebar at the binding points. Rebar binding machines are intelligent tools with built-in microcontrollers that can automatically complete all steps of rebar binding. They can be widely used in the construction engineering field to replace manual rebar binding. A rebar binding machine mainly consists of four parts: the machine body, a special cable reel, a battery box, and a charger. However, traditional rebar binding machines and methods have the following problems:

[0004] When binding reinforcing bars, for planar grids formed by intersecting bars, manual hand-held binding machines are used to bind the intersections of the reinforcing bars one at a time. Because this manual binding method wastes considerable processing time, it becomes problematic. When binding reinforcing cages formed by intersecting bars, one or more sides of the cage may be obstructed by buildings. For example, in the construction of a basement, the load-bearing walls are installed starting from the edge of the foundation pit, requiring the binding of the load-bearing wall reinforcing cages. However, because the reinforcing cages are close to the edge of the foundation pit, the space is limited, hindering the binding work. Furthermore, the confined space inside the reinforcing cage prevents the binding personnel from entering to perform the binding work. The obstruction of the building (excavation pit sidewall) prevents construction workers from changing their relative position to the rebar cage, thus making it impossible to tie the rebar cage on the side obscured by the building. It is necessary to use a tying robot to tie the rebar cage from the inside. For different construction sites, the size of the rebar mesh formed by the rebars is different, so the distance between the intersections is different. When the tying robot is working, the tying machine installed on it (patent application document No. 202210965397.2) cannot adjust the relative position between the tying machine and the robot, which makes it impossible for the tying machine to tie multiple rebar intersections located on the same horizontal line. This increases the time and effort required for rebar tying. Therefore, a rebar tying device that can be used in confined spaces is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a rebar tying device for confined spaces to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a rebar binding device for confined spaces, comprising;

[0007] There are two crossbeams, one and two crossbeams, with the two ends of the two crossbeams two fixedly connected to the two ends of the two crossbeams one, respectively.

[0008] Motor 1 is fixedly installed on one side of each of the two crossbeams that are far apart from each other. Track 1 is installed on one side of each of the two crossbeams that is far apart from each other through the rotation of motor 1. A displacement device for changing the position of the binding equipment is set between the two crossbeams.

[0009] An upright plate is set between two horizontal beams and its two ends are fixedly connected to the adjacent side of the two horizontal beams respectively. A receiving groove is opened on one side of the upright plate. A spring telescopic plate is slidably installed in the inner cavity of the receiving groove through a threaded drive. A binding device for binding steel bars is set on the telescopic end of the spring telescopic plate near the receiving groove.

[0010] A sliding groove is formed on the top of the upright plate and communicates with the inner cavity of the receiving groove. A push plate is slidably installed in the inner cavity. A sliding groove 1 is formed in the middle of one side of the push plate along the vertical direction, and multiple sliding grooves 2 are formed on one side of the push plate with the sliding groove 1 as the midpoint. The multiple sliding grooves 2 are all inclined in the direction away from the sliding groove 1. A sliding rod is slidably installed in the inner cavity of the sliding groove 1 and the multiple sliding grooves 2. A pressure block for pressing the telescopic end of the spring telescopic plate 1 is fixedly installed at one end of the sliding rod near the opening end of the receiving groove.

[0011] Hydraulic cylinder one is fixedly connected to the side of the vertical plate away from the opening of the receiving groove, and the power output end is fixedly connected to one side of the push plate.

[0012] Preferably, a guide rail is fixedly installed on the inner wall of the receiving groove away from the opening, and a slider that matches the guide rail is fixedly installed on the end of the slide rod away from the pressure block.

[0013] Preferably, the large end of the spring telescopic plate has two through holes on one side. One of the through holes has a spiral groove on its inner wall. A drive threaded rod is installed inside the through hole with the spiral groove by threaded engagement. The two ends of the drive threaded rod pass through the through hole and are rotatably connected to the inner wall of the receiving groove. A motor for driving the threaded rod to rotate is fixedly installed on the outside of the upright plate.

[0014] A guide rod is installed in the inner cavity of another through hole. The two ends of the guide rod pass through the through hole and are fixedly connected to the inner wall of the receiving groove.

[0015] Preferably, the pressure block and the slide rod are inclined on both sides away from their own bottom, and the top of the telescopic end of the spring telescopic plate is bent.

[0016] Preferably, the binding device includes a housing, a connecting rod fixedly installed on one side of the telescopic end of a spring telescopic plate, one side of the housing and the end of the connecting rod away from the spring telescopic plate are fixedly connected, and the bottom of the housing has a discharge trough communicating with its own inner cavity. A bending plate is fixedly installed on one side of the discharge trough. The bottom of the bending plate has a bending groove for bending the wire, and the top of the bending plate has a through slot communicating with its own bottom. A bearing block is fixedly installed on the inner wall of the housing. A second motor is fixedly installed on the end of the bearing block near the through slot. A cross block is fixedly installed on the power output end of the second motor. A mounting plate is provided at the bottom of the cross block. The top of the mounting plate has a groove that matches the cross block, and knotting plates are symmetrically installed in a ring on the bottom of the mounting plate. The mounting plate is located directly above the through slot.

[0017] Hydraulic cylinders are symmetrically installed on both sides of the bearing block. The power output end of the hydraulic cylinders is fixedly installed with a connecting plate that is rotatably connected to the outer wall of the mounting plate.

[0018] Guide roller 1 and guide roller 2 are rotatably mounted on one side of the inner cavity of the housing for guiding the wire. The outer walls of guide roller 1 and guide roller 2 are in contact with each other, and guide roller 1 and guide roller 2 are located directly above the gap formed by the bending plate and the discharge chute. Motor 3 for rotating guide roller 2 is fixedly mounted on the outer wall of the housing.

[0019] A guide plate for guiding the wire is installed on one side of the bottom of the housing via a torsion spring. The guide plate is located directly below the gap formed by the bending plate and the discharge chute.

[0020] A cutting frame is fixedly installed on one side of the inner cavity of the housing. The cutting frame is located directly below guide roller one and guide roller two. A hydraulic cylinder four is fixedly installed on one side of the inner cavity of the cutting frame. A cutting blade for cutting wire is fixedly installed on the power output end of the hydraulic cylinder four.

[0021] Preferably, a bearing plate is fixedly installed on one side of the telescopic end of the spring telescopic plate. A limit groove is opened on the side of the bearing plate away from the spring telescopic plate. A support bar is slidably installed in the inner cavity of the limit groove. The support bar is located directly below the connecting rod. A threaded hole is opened on the side wall of the end of the support bar in the inner cavity of the limit groove. A transmission threaded rod is provided in the inner cavity of the threaded hole. Both ends of the transmission threaded rod pass through the threaded hole and are rotatably connected to the inner wall of the limit groove. A motor for rotating the transmission threaded rod is fixedly installed on the outer wall of the bearing plate.

[0022] An installation rod is rotatably mounted on the side wall of the other end of the support bar. A reel is movably sleeved on the outer wall of the installation rod. The outer wall of the reel is evenly wound with iron wire for binding the intersection of the reinforcing bars.

[0023] The outer wall of the mounting rod is fixedly fitted with a limiting plate for limiting the unloading reel, and the end of the mounting rod away from the support bar is provided with a threaded groove. A positioning pin for positioning the unloading reel is installed in the inner cavity of the threaded groove through threaded engagement.

[0024] The housing has a through hole on the side near the unwinding reel that is compatible with the wire. A turning plate for changing the direction of wire movement is fixedly installed on one side of the inner cavity of the housing. The turning plate is designed with an L-shaped structure and the corner of the turning plate is bent.

[0025] Preferably, a load-bearing plate is provided between two adjacent crossbeams, and a clamping plate is slidably sleeved on the outer wall of the load-bearing plate. A spring telescopic plate is fixedly installed on one side of the clamping plate, and the top of the spring telescopic plate is fixedly connected to the bottom of the load-bearing plate.

[0026] The inner wall of the clamp is fitted with load-bearing wheels that fit against the outer wall of the load-bearing plate.

[0027] Preferably, the displacement device includes a U-shaped plate and an elastic plate. Multiple U-shaped plates are fixedly installed on the outer wall of the track. The elastic plate is disposed in the inner cavity of the U-shaped plate, and one end of the elastic plate is fixedly connected to one side of the inner cavity of the U-shaped plate. A slot is provided at the top of the U-shaped plate.

[0028] Preferably, a cross plate is fixedly installed between the two cross beams, a hydraulic cylinder is fixedly installed on the top of the cross plate, a mounting frame is fixedly installed on the power output end of the hydraulic cylinder, a track is rotatably installed on the bottom of the mounting frame, a plurality of mounting grooves are opened on the outer wall of the track, an electromagnet is fixedly installed in the inner cavity of the mounting groove, a column is fixedly installed on the side of the electromagnet near the conveyor roller of the track, and a conductive block is fixedly installed on the end of the column away from the electromagnet.

[0029] The interior of track 2 is equipped with a conductive slide rail for energizing the electromagnet. Connecting plates that are rotatably connected to the outer wall of the drive wheel are fixedly installed on both sides of the conductive slide rail. Motor 5 for rotating track 2 is fixedly installed on one side of the mounting frame.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] This invention pushes a spring-loaded telescopic plate. When the curved surface of the spring-loaded telescopic plate is in contact with the inclined surface of the pressure block, the top of the spring-loaded telescopic plate moves downward under force, ensuring its normal movement. This continues until the top of the spring-loaded telescopic plate is completely below the pressure block. At this point, the housing moves horizontally to directly above the intersection of the reinforcing bars and moves downward to a position where the intersection of the reinforcing bars can be tied. By controlling the distance between adjacent pressure blocks, the position of the housing and the intersection of the reinforcing bars can be precisely controlled. When the housing moves laterally along the receiving groove, it is beneficial to tie multiple reinforcing bar intersections on the same horizontal line in sequence, reducing the time and effort required for tying the reinforcing bars. Attached Figure Description

[0032] Figure 1 This is a perspective view of the present invention;

[0033] Figure 2 This is an assembly drawing of the track and the housing of this invention;

[0034] Figure 3 This is an assembly drawing of the vertical plate and the second horizontal beam of the present invention;

[0035] Figure 4 This is an assembly diagram of the unwinding roller and the housing of the present invention;

[0036] Figure 5 This is an assembly diagram of the push plate and the upright plate of the present invention;

[0037] Figure 6 This is a cross-sectional view of the housing of the present invention;

[0038] Figure 7 This is an assembly diagram of the cutting frame and cutting blade of the present invention;

[0039] Figure 8 This is an assembly diagram of the track 2 and the conductive slide rail of the present invention;

[0040] Figure 9 This is an assembly diagram of the conductive slide rail and electromagnet of the present invention;

[0041] Figure 10 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0042] Figure 11 This is an assembly drawing of the track and the U-shaped plate of the present invention;

[0043] Figure 12 For the present invention Figure 4 Enlarged view of the structure at point C;

[0044] Figure 13 For the present invention Figure 11 Enlarged view of the structure at point B;

[0045] Figure 14 This is a cross-sectional view of the spring telescopic plate of the present invention;

[0046] Figure 15 This is a diagram indicating the direction of movement of the second track of the present invention.

[0047] In the diagram: 1. Hydraulic cylinder four; 2. Track one; 3. Crossbeam one; 4. Unwinding reel; 5. Crossbeam two; 6. Housing; 7. Pressure block; 8. Push plate; 9. Slide groove two; 10. Vertical plate; 11. U-shaped plate; 12. Load-bearing plate; 13. Mounting rod; 14. Cutting frame; 15. Support bar; 16. Transmission threaded rod; 17. Bearing plate; 18. Connecting rod; 19. Spring telescopic plate one; 20. Guide rod; 21. Drive threaded rod; 22. Guide plate; 23. Hydraulic cylinder one; 24. Mounting frame; 25. 26. Horizontal plate; 27. Positioning pin; 28. Guide slide rail; 29. ​​Conductive slide rail; 20. Track II; 31. Column; 32. Conductive block; 33. Electromagnet; 34. Cutting blade; 35. Turning plate; 36. Guide roller I; 37. Guide roller II; 38. Knotting plate; 39. Bending plate; 40. Mounting plate; 41. Cross block; 42. Hydraulic cylinder II; 43. Bearing block; 44. Clamping plate; 45. Load-bearing roller; 46. Spring telescopic plate II; 47. Elastic plate; 48. Limiting plate; 49. Base. Detailed Implementation

[0048] 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.

[0049] Example 1

[0050] During building construction, the general process is to lay the bottom reinforcement bars, then tie them together, and finally lay a formwork on top of the bottom reinforcement bars. Then, the top reinforcement bars are laid and tied together. The tying is usually done manually, which is relatively slow.

[0051] Therefore, in response to the above-mentioned situations regarding the binding of rebar cages, this embodiment provides a rebar binding device for confined spaces. Please refer to [link / reference]. Figure 1-12 ,include:

[0052] Two crossbeams, 3 and 5, are fixedly connected at both ends to the ends of the two crossbeams 3. The connection between the two crossbeams 3 and 5 forms a quadrilateral frame.

[0053] Motor 1 is fixedly installed on the side of each of the two crossbeams 2 5 that are far apart from each other. Track 2 is mounted on the side of each of the two crossbeams 2 5 that is far apart from each other through the rotation of motor 1. A displacement device for changing the position of the binding equipment is set between the two crossbeams 2 5. The power output ends of the two motors 1 are respectively connected to the drive rollers of the two tracks 2. When it is necessary to bind the grid-shaped steel bars, crossbeam 3 and crossbeam 2 5 are placed on the grid-shaped steel bars until the bottom of the two tracks 2 simultaneously contacts the two parallel steel bars.

[0054] Once the motor starts, the drive roller rotates with the power output end of the motor, and under the action of the tension belt, multiple driven rollers rotate accordingly, allowing the track 2 to move stably along the laying direction of the reinforcing bars.

[0055] The upright plate 10 is set between the two crossbeams 2 5, and its two ends are fixedly connected to the adjacent side of the two crossbeams 2 5 respectively. The long end of the upright plate 10 is fixedly connected to the adjacent side of the two crossbeams 2 5. The two crossbeams 2 5 provide support for the upright plate 10.

[0056] A receiving groove is provided on one side of the upright plate 10. A spring telescopic plate 19 is slidably installed in the inner cavity of the receiving groove by means of a thread. The receiving groove can limit the sliding trajectory of the spring telescopic plate 19, allowing the spring telescopic plate 19 to move back and forth along the left and right directions of the receiving groove, and preventing the spring telescopic plate 19 from deviating when moving back and forth.

[0057] A binding device for binding reinforcing bars is provided on the side of the telescopic end of the spring telescopic plate 19 near the receiving groove. A connecting rod 18 is fixedly installed on one side of the telescopic end of the spring telescopic plate 19. One side of the housing 6 is fixedly connected to the end of the connecting rod 18 away from the spring telescopic plate 19. The connecting rod 18 is set as an L-shaped structure. The connecting rod 18 can be used as a connector between the spring telescopic plate 19 and the housing 6, allowing the housing 6 to move along the direction of the reinforcing bars with the track 2, while keeping the bottom of the housing 6 parallel to the top of the crossbeam 3 and the crossbeam 5.

[0058] The spring telescopic plate 19 consists of two slide plates of different sizes and multiple springs. One end of the larger slide plate has a groove, and one end of the smaller slide plate is slidably inserted into the groove, while the other end extends to the outside of the groove. Multiple springs are located between the bottom of the groove and the smaller slide plate and are interconnected with the bottom of the groove and the smaller slide plate. The multiple springs can apply a pushing force to the smaller slide plate and allow it to move into the groove and then quickly return to its original position.

[0059] When the housing 6 moves to the intersection of the reinforcing bars, push the spring telescopic plate 19 to move the housing 6 directly above the intersection of the reinforcing bars. Then press the top of the spring telescopic plate 19. At this time, the connecting rod 18 moves down with the telescopic end of the spring telescopic plate 19 until the bottom of the housing 6 is a certain distance away from the top of the intersection of the reinforcing bars. Then activate the binding device inside the housing 6 to bind the intersection of the reinforcing bars. After that, release the pressure on the telescopic end of the spring telescopic plate 19, and the housing 6 returns to its original position along with the telescopic end of the spring telescopic plate 19. This completes the binding operation for one intersection of reinforcing bars.

[0060] A sliding groove is formed on the top of the vertical plate 10 and communicates with the inner cavity of the receiving groove. A push plate 8 is slidably installed in the inner cavity. The sliding groove allows the push plate 8 to slide up and down vertically in the inner cavity of the receiving groove, and also limits the sliding trajectory of the push plate 8.

[0061] A vertical groove is provided on the middle of one side of the push plate 8, and multiple grooves 9 are provided on one side of the push plate 8 with the groove 1 as the midpoint. Multiple grooves 9 are provided on one side of the push plate 8 with the groove 1 as the midpoint, and the bottom center distance of two adjacent grooves 9 is the same.

[0062] Multiple slides 2 9 are inclined away from slide 1, and the inclination angle of slides 2 9 gradually increases as they move away from slide 1.

[0063] Slide rods are slidably installed in the inner cavities of slide groove 1 and multiple slide grooves 2 9. A pressure block 7 for pressing the telescopic end of spring telescopic plate 19 is fixedly installed at the end of the slide rod near the opening of the receiving groove. A guide rail 27 is fixedly installed on the inner wall of the receiving groove away from the opening. A slider adapted to the guide rail 27 is fixedly installed at the end of the slide rod away from the pressure block 7. When the push plate 8 is pressed, the side wall of slide groove 2 9 presses against the outer wall of the slide rod. As slide groove 2 9 slides relative to the slide rod, multiple sliders slide synchronously along the guide rail 27 and move the same distance. After the push plate 8 has moved, the spacing between multiple pressure blocks 7 is the same. The distance between two adjacent pressure blocks 7 can be precisely controlled by changing the distance of the push plate 8 moving up and down.

[0064] The pressure block 7 and the sliding rod are both inclined away from their bottom sides. The top of the telescopic end of the spring telescopic plate 19 is curved, and the top of the spring telescopic plate 19 is arched. Press the push plate 8 according to the distance between two adjacent steel bars until the distance between the middle of the bottom ends of two adjacent pressure blocks 7 is the same as the distance between two adjacent steel bars. At the same time, the middle of the bottom ends of multiple pressure blocks 7 and the middle of the steel bars are on the same horizontal line. Stop pressing or moving the push plate 8, and then fix the moved push plate 8. Then push the spring telescopic plate 19. When the curved surface of the spring telescopic plate 19 is aligned with the pressure block 7, the spring telescopic plate 19 is pushed. When the inclined surface of block 7 is in contact, the top of spring telescopic plate 19 is forced to move downward, while ensuring the normal movement of spring telescopic plate 19 until the top of spring telescopic plate 19 is completely under the pressure block 7. At this time, the shell 6 moves horizontally to the top of the rebar intersection and moves downward to a position where the rebar intersection can be tied. By controlling the distance between adjacent pressure blocks 7, the position of shell 6 and rebar intersection can be accurately controlled. When shell 6 moves laterally along the receiving groove, it is beneficial to tie multiple rebar intersections on the same horizontal line in sequence, reducing the time and effort required for rebar tying.

[0065] Hydraulic cylinder 23 is fixedly connected to the side of the vertical plate 10 away from the opening of the receiving groove, and the power output end is fixedly connected to one side of the push plate 8. When hydraulic cylinder 23 is started, the push plate 8 moves up and down with the power output end of hydraulic cylinder 23 and can be positioned after the push plate 8 has moved, preventing displacement when the bottom of the pressure block 7 contacts the top of the spring telescopic plate 19. This allows the housing 6 to be accurately moved down to the binding position, so that multiple steel bar intersections located on the same horizontal line can be bound in an orderly manner according to the moving distance of the housing 6.

[0066] Furthermore, when the spring telescopic plate 19 moves between two adjacent pressure blocks 7, the telescopic end of the spring telescopic plate 19 moves upward, thereby resetting the housing 6, which facilitates the re-movement of the track 2.

[0067] Two through holes are opened on one side of the large end of the spring telescopic plate 19. One of the through holes has a spiral groove on its inner wall. A drive threaded rod 21 is installed inside the through hole with the spiral groove through a threaded fit. Both ends of the drive threaded rod 21 pass through the through hole and are rotatably connected to the inner wall of the receiving groove. A motor 2 for driving the rotation of the threaded rod 21 is fixedly installed on the outside of the upright plate 10. A hole adapted to the drive threaded rod 21 is opened on one side of the upright plate 10. One end of the drive threaded rod 21 passes through the hole and extends to the outside of the receiving groove. The power output end of the motor 2 is connected to the end of the drive threaded rod 21 extending to the outside of the receiving groove through a chain. After the motor 2 starts, the drive threaded rod 21 rotates under the action of the chain. With the cooperation of the spiral groove, the spring telescopic plate 19 slides along the axis of the drive threaded rod 21 and is positioned by the threaded fit, which improves the stability of the spring telescopic plate 19 in the static state.

[0068] Furthermore, the second motor (which controls the rotation direction of its own rotor through an H-bridge circuit, the most common method for controlling the direction of a DC motor, consisting of four switches (usually transistors or relays) that control the direction of current flow at both ends of the motor; when current flows into the motor from one direction, the motor rotates in that direction; when the current direction changes, the motor rotates in the opposite direction; by alternating the direction of the current, the reciprocating motion of the motor can be achieved) can change the rotation direction of its own power output end through a lower current, thereby adjusting the rotation direction of the drive screw rod 21.

[0069] A guide rod 20 is provided in the inner cavity of another through hole. The two ends of the guide rod 20 pass through the through hole and are fixedly connected to the inner wall of the receiving groove. When the spring telescopic plate 19 moves back and forth, the guide rod 20 and the through hole can limit its own sliding trajectory, preventing the spring telescopic plate 19 from rotating with the drive threaded rod 21 and from shaking or tilting during the sliding process, thus improving the sliding stability of the spring telescopic plate 19.

[0070] The binding device includes a housing 6, and the bottom of the housing 6 has a discharge trough that communicates with its own inner cavity. A bending plate 38 is fixedly installed on one side of the discharge trough. One end of the bending plate 38 is fixedly connected to one side of the inner cavity of the discharge trough. At the same time, the bending plate 38 is set as an arched structure. The gap formed between the other end of the bending plate 38 and one side of the inner cavity of the discharge trough allows the free end of the iron wire to pass through.

[0071] A guide plate 22 for guiding the wire is installed on one side of the bottom of the housing 6 by a torsion spring. The guide plate 22 is located directly below the gap formed by the bending plate 38 and the discharge chute. The guide plate 22 is bent and extends from the end connected to the bottom of the housing 6 towards the bending plate 38.

[0072] The bottom of the bending plate 38 is provided with a bending groove for bending the wire, and the top of the bending plate 38 is provided with a through slot that communicates with its own bottom. After the shell 6 moves down to the side where the guide plate 22 is located at the intersection of the reinforcing bars, the free end of the wire enters the interior of the shell 6 and moves quickly to the bottom of the shell 6 through the gap between the bending plate 38 and the other side of the inner cavity of the bending groove until the free end contacts the bending surface of the guide plate 22. The free end of the wire moves along the bending surface of the guide plate 22 under continuous pushing. When the free end of the wire collides with the bending surface of the guide plate 22, it slides along the bending surface of the guide plate 22. The wire moving along the bending surface of the guide plate 22 bends and deforms and moves continuously toward the bending plate 38 until the free end of the wire enters the interior of the bending groove and moves continuously inside the bending groove to form a spiral structure. At this time, the spiral structure of the wire is wrapped around the outside of the intersection of the wires.

[0073] Furthermore, as the curved surface of the spring telescopic plate 19 contacts the outer wall of the pressure block 7 and moves downward, the bottom of the housing 6 continuously approaches the reinforcing bar. After the housing 6 moves downward to a certain extent (the top of the spring telescopic plate 19 does not contact the bottom of the pressure block 7), the bottom of the guide plate 22 extends to below the reinforcing bar. As the housing 6 continues to move, the outer wall of the guide plate 22 contacts the outer wall of the reinforcing bar and the top rotates through the torsion spring until the bottom of the guide plate 22 rotates to directly above the reinforcing bar. When the top of the spring telescopic plate 19 and the bottom of the pressure block 7 are in contact, the bottom of the guide plate 22 rotates across the top of the reinforcing bar and moves to the other side, preventing the extension of the guide plate 22 from adversely affecting the normal movement of the housing 6, while ensuring the normal bending of the wire by the guide plate 22.

[0074] A cutting frame 14 is fixedly installed on one side of the inner cavity of the housing 6. The cutting frame 14 is located directly below the guide roller 35 and the guide roller 36. A hydraulic cylinder 1 is fixedly installed on one side of the inner cavity of the cutting frame 14. A cutting blade 33 for cutting the wire is fixedly installed at the power output end of the hydraulic cylinder 1. Before the free end of the wire enters the gap formed between the guide plate 22 and the bending plate 38, it first passes through the cavity formed between the side wall of the cutting frame 14 and the cutting blade 33. After the wire is bent into a spiral structure, the hydraulic cylinder 1 is activated and the cutting blade 33 moves closer to the wire with the power output end until the tip of the cutting blade 33 and the inner wall of the cutting frame 14 press against the outer surface of the wire to achieve the cutting of the wire.

[0075] After the reinforcing bars are tied at the intersection, the hydraulic cylinder 41 is activated again to quickly reset the mounting plate 39. At this time, the knotting plate 37 is pulled out from inside the wrapped reinforcing bars and reset, so that the reinforcing bars can be wrapped again.

[0076] A bearing block 42 is fixedly installed on the inner wall of the housing 6. A motor 2 is fixedly installed on one end of the bearing block 42 near the through slot. A cross block 40 is fixedly installed on the power output end of the motor 2. A mounting plate 39 is provided at the bottom of the cross block 40. A groove adapted to the cross block 40 is opened on the top of the mounting plate 39. The groove is set in a cross shape. When the power output end of the motor 2 rotates, the cross block 40 rotates accordingly, and the mounting plate 39 rotates accordingly in the groove.

[0077] The bottom of the mounting plate 39 is symmetrically equipped with knotting plates 37 arranged in a ring. Hydraulic cylinders 41 are symmetrically installed on both sides of the bearing block 42. The power output end of the hydraulic cylinder 41 is fixedly installed with a connecting plate that is rotatably connected to the outer wall of the mounting plate 39. The mounting plate 39 is located directly above the through slot. After the wire forms a spiral structure under the action of the bending groove and is cut by the cutting blade 33, the hydraulic cylinder 41 is activated to move the power output end closer to the through slot until the ends of the two knotting plates 37 away from the mounting plate 39 pass through the through slot and extend directly below the bending plate 38. At this time, the wire bent into a spiral shape is located between the two knotting plates 37. Then, the motor is activated to make the knotting plates 37 rotate together with the mounting plate 39, thereby twisting the wire bent into a spiral shape and wrapping it around the outside of the rebar intersection to achieve binding of the rebar intersection.

[0078] A guide roller 35 and a guide roller 36 for guiding the wire are rotatably mounted on one side of the inner cavity of the housing 6. The outer walls of the guide roller 35 and the guide roller 36 are in contact with each other. When the guide roller 36 rotates, the guide roller 35 rotates in the opposite direction under the action of friction, so as to facilitate the synchronous rotation of the guide roller 35 and the guide roller 36.

[0079] The outer walls of both guide roller 1 35 and guide roller 2 36 are provided with annular grooves that are compatible with the wire. After the wire is inserted into the housing 6, the free end of the wire passes through the space between guide roller 1 35 and guide roller 2 36, while the outer surface is in close contact with the inner wall of the annular groove. When guide roller 1 35 and guide roller 2 36 rotate, they move quickly and stably into the cutting frame 14 under the action of friction.

[0080] Furthermore, multiple sets of guide rollers 35 and 36 are rotatably installed in the inner cavity of the housing 6 along a straight line, which helps to continuously limit the movement trajectory of the wire, prevent the free end of the wire from deviating when moving and failing to penetrate the interior of the cutting frame 14, and improve the stability of the free end of the wire penetrating the interior of the cutting frame 14.

[0081] Guide roller 1 35 and guide roller 2 36 are located directly above the gap formed by the bending plate 38 and the discharge chute. A motor 3 for rotating guide roller 2 36 is fixedly installed on the outer wall of the housing 6. Multiple holes are opened on the outside of the housing 6. One end of guide roller 2 36 closest to the cutting frame 14 passes through the hole and extends to the outside of the housing 6. The power output end of motor 3 and the end of guide roller 2 36 extending to the outside of the housing 6 are connected by a chain. When motor 3 starts, multiple guide rollers 2 36 rotate accordingly, thereby providing power for the movement of the wire.

[0082] A bearing plate 17 is fixedly installed on one side of the telescopic end of the spring telescopic plate 19. A limiting groove is opened on the side of the bearing plate 17 away from the spring telescopic plate 19. A support bar 15 is slidably installed in the inner cavity of the limiting groove. The support bar 15 is located directly below the connecting rod 18. The limiting groove can limit the sliding trajectory of the support bar 15, prevent the support bar 15 from shaking or deviating when it moves, and improve the stability of the support bar 15 when it moves.

[0083] The support bar 15 has a threaded hole on one side wall of the inner cavity of the limiting groove. A transmission threaded rod 16 is provided in the inner cavity of the threaded hole. Both ends of the transmission threaded rod 16 pass through the threaded hole and are rotatably connected to the inner wall of the limiting groove. A motor four for rotating the transmission threaded rod 16 is fixedly installed on the outer wall of the bearing plate 17. One end of the bearing plate 17 has an adapter hole that matches the transmission threaded rod 16. One end of the transmission threaded rod 16 passes through the adapter hole and extends to the outside of the bearing plate 17. The power output end of the motor four is connected to the end of the transmission threaded rod 16 that extends to the outside of the bearing plate 17 via a chain drive. After the power output end of the motor four rotates, the transmission threaded rod 16 rotates accordingly. With the cooperation of the threaded hole, the support bar 15 moves along the limiting groove.

[0084] As the guide roller 36 rotates, the wire wound around the outside of the unwinding reel 4 continuously enters the interior of the housing 6. Consequently, the wire on the outer surface of the unwinding reel 4 moves further away from the through hole. Then, the motor 4 is started to rotate the transmission threaded rod 16, causing the unwinding reel 4 to move towards the through hole along with the support bar 15. This effectively reduces the distance between the wire wound around the outer surface of the unwinding reel 4 and the through hole as it enters the interior of the housing 6, preventing the wire from bending or getting stuck when entering the interior of the housing 6 through the through hole.

[0085] Furthermore, since motor four and motor two are of the same model, the rotation direction of the power output end of motor four can be changed by alternating current, which is beneficial to change the moving direction of support bar 15 and to position the moved support bar 15.

[0086] A mounting rod 13 is rotatably mounted on the side wall of the other end of the support bar 15. A reel 4 is movably sleeved on the outer wall of the mounting rod 13. The outer wall of the reel 4 is evenly wound with iron wire for binding the intersection of the reinforcing bars. The reel 4 is a cylindrical structure with a large amount of iron wire wound around it. When binding reinforcing bars in a narrow space, the number of times the iron wire can be replaced can be reduced. A through hole adapted to the iron wire is opened on the side of the housing 6 near the reel 4. Multiple sets of guide rollers 1 35 and guide rollers 2 36 are installed on the outer wall of the housing 6. The middle of the opening end of the through hole and the guide rollers 1 35 and 2 36 are on the same horizontal line. The free end of the iron wire outside the reel 4 is inserted between the guide rollers 1 35 and 2 36 outside the housing 6. The free end of the iron wire passes through the through hole and enters the interior of the housing 6.

[0087] A turning plate 34 for changing the direction of wire movement is fixedly installed on one side of the inner cavity of the housing 6. The turning plate 34 is set in an L-shape and the corner of the turning plate 34 is bent. One end of the wire entering the housing 6 contacts the bent part of the turning plate 34 and squeezes one end of the wire to bend it toward the cutting frame 14, so that the insertion end of the wire is inserted between the first guide roller 35 and the second guide roller 36.

[0088] A limiting disc 47 for limiting the unwinding reel 4 is fixedly sleeved on the outer wall of the mounting rod 13. A threaded groove is opened at the end of the mounting rod 13 away from the support bar 15. A positioning pin 26 for positioning the unwinding reel 4 is installed in the inner cavity of the threaded groove through threaded engagement. After the unwinding reel 4 is sleeved on the outside of the mounting rod 13, one end of it fits into one end of the limiting disc 47. Then, one end of the positioning pin 26 is inserted into the threaded groove. Then, the positioning pin 26 is rotated and connected to one end of the mounting rod 13 under the engagement of the threaded groove. At this time, one end of the positioning pin 26 and the other end of the unwinding reel 4 are tightly fitted together and apply a continuous pressure to the unwinding reel 4 towards the limiting disc 47. Under the double compression of the limiting disc 47 and the positioning pin 26, the unwinding reel 4 is fixed, allowing the unwinding reel 4 to rotate together with the mounting rod 13.

[0089] In this embodiment, a load-bearing plate 12 is provided between two adjacent crossbeams 5. A clamping plate 43 is slidably sleeved on the outer wall of the load-bearing plate 12. A spring telescopic plate 45 (with the same composition and working principle as the spring telescopic plate 19) is fixedly installed on one side of the clamping plate 43. The top of the spring telescopic plate 45 is fixedly connected to the bottom of the load-bearing plate 17. When the telescopic end of the spring telescopic plate 19 moves up and down, the telescopic end of the spring telescopic plate 45 moves up and down accordingly. At the same time, under the action of the clamping plate 43, it supports the load-bearing plate 17, which improves the stability of the load-bearing plate 17 when it moves back and forth.

[0090] The inner wall of the clamping plate 43 is rotatably mounted with a load-bearing wheel 44 that fits against the outer wall of the load-bearing plate 12. The load-bearing wheel 44 can act as a connecting medium between the inner wall of the clamping plate 43 and the outer wall of the load-bearing plate 12, effectively reducing the friction between the clamping plate 43 and the load-bearing plate 12 when the clamping plate 43 moves back and forth, and improving the smoothness of the unwinding reel 4 when it moves back and forth.

[0091] This embodiment is applicable to binding steel bars laid parallel to the horizontal plane. Under the action of its own weight, the track 2 can walk on the steel bar frame.

[0092] Example 2

[0093] When binding the intersection of the cage-like steel mesh formed by the wall, the ground and the load-bearing columns, not only the steel bars parallel to the horizontal line need to be bound, but also the side of the cage-like steel mesh perpendicular to the horizontal plane needs to be bound. When the track 2 is placed on the side wall of the cage-like steel mesh perpendicular to the horizontal plane, the center of gravity of the track 2 changes, and it falls and separates from the outside of the cage-like steel mesh under the action of gravity. Therefore, it is impossible to bind the cage-like steel mesh perpendicular to the horizontal plane.

[0094] Therefore, when binding the reinforcing bars at intersections in the above situations, please refer to [the relevant documentation / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 11 Further improvements made based on Example 1:

[0095] The elastic plate 46 is set in the inner cavity of the U-shaped plate 11, and one end of the elastic plate 46 is fixedly connected to one side of the inner cavity of the U-shaped plate 11. When the track 2 moves along the steel bar, the elastic plate 46 located at the rear of the track 2 in the direction of movement separates from the steel bar, while the elastic plate 46 located at the front of the track 2 in the direction of movement is attached to the outer surface of the steel bar again under the action of gravity and the movement of the track 2, thereby improving the stability of the track 2 in the direction of movement.

[0096] The elastic plate 46 is designed with a U-shaped structure, which can tightly wrap around the outer surface of the steel bar, effectively preventing the track 2 from falling off when crawling along the steel bar that is perpendicular to the horizontal plane.

[0097] The top of the U-shaped plate 11 is provided with a slot. When the track 2 passes through the intersection of the reinforcing bars, the intersecting reinforcing bars enter the slot, which effectively prevents one end of the U-shaped plate 11 from contacting the outer wall of the reinforcing bars when the track 2 moves to the intersection of the reinforcing bars, thus preventing the track 2 from separating from the outer surface of the reinforcing bars.

[0098] The elastic plate 46 is made of metal spring sheet, which can improve its plastic deformation ability and extend the service life of the elastic plate 46.

[0099] In this embodiment, the pusher plate 8, as the tallest structure of the device, has a height of 30-40cm. When binding vertical reinforcing bars, the elastic plate 46 can be engaged with the vertically placed reinforcing bars, preventing the entire device from falling and enabling the binding of vertical reinforcing bars. Furthermore, due to its relatively short overall structure, it is suitable for construction in narrow gaps, especially when binding reinforcing bars for load-bearing walls in basements. This device can be placed in the confined space between the load-bearing wall reinforcement cage and the side wall of the foundation pit to perform the reinforcing bar binding work.

[0100] Example 3

[0101] In this embodiment, the method also applies to the binding of reinforcing bars at the post-cast strip location. The post-cast strip, a type of gap structure designed to prevent harmful cracks in reinforced concrete structures due to uneven shrinkage or settlement, has an overall width of 700mm-1000mm and is installed every 30m-40m. The reinforcing bars in the post-cast strip are of two types: continuous reinforcing bars and lapped reinforcing bars. For lapped reinforcing bars, after the main concrete is poured, the reinforcing bars of the post-cast strip are lapped together with the main reinforcing bars on the pre-reserved reinforcing bars in the main structure, and then the reinforcing bars are bound. Lapd reinforcing bars are mainly applicable to settlement-type post-cast strips.

[0102] Because the width of the post-cast strip is between 700mm and 1000mm, its overall width is relatively small. Combined with the extension of the main reinforcing bars, this makes it very inconvenient for workers to lap the reinforcing bars in the post-cast strip. Therefore, this design is also suitable for tying the reinforcing bars in the narrow space of the post-cast strip.

[0103] Due to the limitations of the main body's pre-reserved reinforcing bars (bottom and top bars), the extension length of hydraulic cylinder three cannot be too large to prevent the pushing plate 8 or the overall structure from touching the top bars. Therefore, the power output end of hydraulic cylinder three should not extend too far to prevent the device from colliding with the other side of the reinforcing cage and affecting the extension of the power output end of hydraulic cylinder one 23, thus hindering the adjustment of the pushing plate 8. At the same time, due to the clamping of the reinforcing bars by elastic plate 46, it can prevent the track one 2 from falling off when moving in the direction perpendicular to the ground along the reinforcing cage. Therefore, when adjusting the left and right positions of track one 2, the elastic plate 46 should not be completely separated from the reinforcing bars. This is a further improvement based on embodiment 2.

[0104] The displacement device includes a U-shaped plate 11 and an elastic plate 46. Multiple bases 48 are fixedly installed on the outer wall of the track 2. The bases 48 are configured as "U-shaped structures". The top of the base 48 is rotatably mounted with the U-shaped plate 11 via a torsion spring. A connecting block is fixedly installed at one end of the U-shaped plate 11. Meanwhile, rotating shafts are symmetrically arranged on both sides of the inner cavity of the base 48. A torsion spring connected to the inner wall of the base 48 is fixedly installed on the outer wall of the rotating shaft. The two sides of the connecting block are fixedly connected to the adjacent ends of two adjacent rotating shafts, respectively. When the left and right sides of the U-shaped plate 11 are subjected to force, it rotates around the rotating shaft as the axis. At the same time, the torsion spring is compressed. When the force on the left and right sides of the U-shaped plate 11 disappears, it returns to its bottom and parallel to the outer wall of the track 2 along with the torsion spring.

[0105] The power output end of the hydraulic cylinder three extends to the bottom of the horizontal plate 25. A connecting plate is installed at the power output end of the hydraulic cylinder three. Mounting brackets 24 are symmetrically installed at both ends of the connecting plate. Track two 29 is installed at the bottom of each of the two mounting brackets 24. The drive wheels of the two tracks two 29 are connected by a connecting rod.

[0106] A motor five for rotating track two 29 is fixedly installed on one side of the mounting bracket 24. Motor five and motor two are of the same model. The direction of rotation of the power output end of motor five can be changed by changing the direction of the current. The power output end of motor five is connected to one end of one of the drive wheels. When motor five starts, the two drive wheels rotate synchronously under the action of the connecting rod, which helps to make the two tracks two 29 rotate synchronously.

[0107] Multiple mounting slots are provided on the outer wall of track 29. An electromagnet 32 ​​is fixedly installed in the inner cavity of the mounting slot. A column 30 is fixedly installed on the side of the electromagnet 32 ​​near the conveyor roller of track 29. A conductive block 31 is fixedly installed on the end of the column 30 away from the electromagnet 32. A conductive slide rail 28 for energizing the electromagnet 32 ​​is provided inside track 29. A guide rail adapted to the conductive block 31 is installed at the bottom of the conductive slide rail 28 along the direction of rotation of track 29. When track 29 moves, the column 30 moves with track 29 until the conductive block 31 enters the interior of the guide rail.

[0108] Furthermore, after the intersection of the reinforcing bars that coincide with the movement trajectory of track 2 is secured, hydraulic cylinder 3 is activated, and the conductive slide rail 28 is simultaneously energized. At this time, the two tracks 29 move downward under the power output of hydraulic cylinder 3 and come into contact with the outside of the reinforcing bars. As the power output of hydraulic cylinder 3 continues to move, track 29 applies pressure to the outside of the reinforcing bars. At the same time, the outer wall of electromagnet 32 ​​located directly below the guide rail comes into contact with the outer surface of the reinforcing bars. Meanwhile, the reinforcing bars exert a counterforce on track 29, causing track 2 to lift slightly and separate from the reinforcing bars.

[0109] When the power output end of hydraulic cylinder three extends, causing track two 29 to apply a reverse force to the outside of the reinforcing bar, the reinforcing bar inside elastic plate 46 moves to the space between elastic plate 46 and the end of U-shaped plate 11 away from track one 2. Elastic plate 46 can also be locked together with the reinforcing bar without detaching. The specific configuration needs to be determined based on the actual rising height of track one 2 during use. In this embodiment, the example is that elastic plate 46 does not detach from the reinforcing bar when track one 2 rises.

[0110] After the conductive block 31 located inside the guide rail comes into contact with the inner wall of the guide rail, it is energized. The current is transmitted to the electromagnet 32 ​​through the conductive block 31 and the column 30. After the electromagnet 32 ​​is energized, it is attracted to the outer surface of the steel bar. Under the combined action of the elastic plate 46 and the attraction force of the electromagnet 32, the device can be placed more stably in the vertical plane.

[0111] The rotation direction of track 2 is perpendicular to the rotation direction of track 29. When track 2 moves to the end of the steel mesh, hydraulic cylinder 3 is activated. After track 2 is slightly lifted, motor 5 is activated to rotate track 29. At this time, multiple conductive blocks 31 continuously move in and out of the guide rail. When the conductive blocks 31 move out of the guide rail, electromagnet 32 ​​is de-energized, and the current disappears, which facilitates the continuous rotation of track 29. When track 29 rotates, the entire structure moves along with track 29, and the direction of movement is as follows. Figure 15 As shown by the middle arrow, since the elastic plate 46 and the U-shaped plate 11 are always engaged with the reinforcing bar, the U-shaped plate 11 rotates around the pivot of the base 8 until the inner wall of the U-shaped plate 11 completely detaches from the reinforcing bar. At this point, the external force on the U-shaped plate 11 disappears, and the U-shaped plate 11 returns to its original position under the action of the torsion spring. The elastic plate 46 and the U-shaped plate 11 can rotate in the direction of movement of the track 29. In the direction of movement of the track 2, the elastic plate 46 and the U-shaped plate 11 cannot rotate independently. Therefore, when the track 2 moves with the entire device, the elastic plate 46 and the U-shaped plate 11 can still hold the reinforcing bar.

[0112] As track 29 moves laterally, the outer wall of the U-shaped plate 11 repeatedly collides with the reinforcing bars at different positions. When track 29 moves to the outside of the reinforcing bars at a predetermined position, following the direction of the main body's movement, one side of the U-shaped plate 11 contacts the vertical reinforcing bar and rotates around the pivot of the base 48, without hindering the horizontal movement of the entire device. After the U-shaped plate 11 disengages from the vertical reinforcing bar, it returns to its original shape (perpendicular to track 2) under the action of the torsion spring. The U-shaped plate 11 then contacts the upper part of the horizontally placed reinforcing bar, providing support for the entire device and preventing it from falling along the reinforcing bar. The movement is more stable when track 29 carries the entire device laterally. It should be noted that since multiple U-shaped plates 11 are provided, it is not required that all U-shaped plates 11 contact the upper part of the horizontally placed reinforcing bar. In principle, it is sufficient for at least one U-shaped plate 11 to contact the upper part of the horizontally placed reinforcing bar. Of course, the more U-shaped plates 11 that come into contact with the horizontal reinforcing bars, the better the support for the overall device;

[0113] Meanwhile, when the U-shaped plate 11 is perpendicular to the track 2, it also has the function of preventing the entire device from falling. This function does not require the U-shaped plate 11 to be in contact with the horizontally placed steel bar when the track 29 moves the entire device laterally. When the conductive block 31 is not firmly attached to the steel bar, the entire device will slide down. When it slides down to the point where the U-shaped plate 11 contacts the nearest horizontally placed steel bar, the contact between the U-shaped plate 11 and the horizontally placed steel bar limits the entire device and can prevent the entire device from falling.

[0114] The distance between the two ends of the driving wheel and the driven wheel constituting track 29 is greater than the diameter of the conductive block 31. At the same time, the outer walls of the driving wheel and the driven wheel are provided with annular grooves. When the conductive block 31 passes through the driving wheel and the driven wheel, it passes through the inside of the annular groove, preventing the outside of the conductive block 31 from contacting the driving wheel and the driven wheel. This avoids the situation where the two ends of track 29 lift up when the conductive block 31 passes through the driving wheel and the driven wheel, thus improving the smoothness of track 29 during movement.

[0115] The conductive slide rail 28 is fixedly installed on both sides with connecting plates that are rotatably connected to the outer wall of the drive wheel. The connecting plates can support the conductive slide rail 28, allowing the conductive slide rail 28 to be fixed inside the track 29.

[0116] 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 rebar binding device for confined spaces, characterized in that, include: Two crossbeams, one (3) and two crossbeams, are fixedly connected at both ends to the two ends of two crossbeams, one (3); The upright plate (10) is fixedly connected to the adjacent side of the two crossbeams (5) at both ends. A receiving groove is provided on one side of the upright plate (10). A spring telescopic plate (19) is slidably installed in the inner cavity of the receiving groove by thread drive. A binding device for binding steel bars is provided on the telescopic end of the spring telescopic plate (19) near the receiving groove. A sliding groove is opened on the top of the vertical plate (10) and communicates with the inner cavity of the receiving groove. A push plate (8) is slidably installed in the inner cavity. A sliding groove one is opened in the middle of one side of the push plate (8) along the vertical direction. Multiple sliding grooves two (9) are opened on one side of the push plate (8) with the sliding groove one as the midpoint. It also includes motor one, motor one is fixedly installed on the side of the two crossbeams two (5) that are far apart from each other, and track one (2) is installed on the side of the two crossbeams two (5) that are far apart from each other through motor one, and displacement device for changing the position of the binding equipment is provided between the two crossbeams two (5). The hydraulic cylinder (23) is fixedly connected to the side of the vertical plate (10) away from the opening of the receiving groove, and the power output end is fixedly connected to the side of the push plate (8). Multiple slide grooves (9) are inclined away from slide groove 1. Slide rods are slidably installed in the inner cavities of slide groove 1 and multiple slide grooves (9). A pressure block (7) for pressing the telescopic end of spring telescopic plate 1 (19) is fixedly installed at one end of the slide rod near the opening of the receiving groove.

2. The rebar binding device for confined spaces according to claim 1, characterized in that: Two through holes are opened on one side of the large end of the spring telescopic plate (19). A spiral groove is opened on the inner wall of one of the through holes. A drive threaded rod (21) is installed inside the through hole with the spiral groove through a threaded fit. The two ends of the drive threaded rod (21) pass through the through hole and are rotatably connected to the inner wall of the receiving groove. A motor for driving the threaded rod (21) to rotate is fixedly installed on the outside of the upright plate (10). A guide rod (20) is provided in the inner cavity of another through hole. The two ends of the guide rod (20) pass through the through hole and are fixedly connected to the inner wall of the receiving groove.

3. The rebar binding device for confined spaces according to claim 1, characterized in that: The binding device includes a housing (6), a connecting rod (18) is fixedly installed on one side of the telescopic end of the spring telescopic plate (19), a discharge trough communicating with its own inner cavity is opened at the bottom of the housing (6), a bending plate (38) is fixedly installed on one side of the discharge trough, a bending groove for bending iron wire is opened at the bottom of the bending plate (38), a bearing block (42) is fixedly installed on the inner wall of the housing (6), a motor is fixedly installed at one end of the bearing block (42) near the through slot, a cross block (40) is fixedly installed at the power output end of the motor, an installation plate (39) is provided at the bottom of the cross block (40), a knotting plate (37) is symmetrically installed in a ring at the bottom of the installation plate (39), and the installation plate (39) is located directly above the through slot; Hydraulic cylinders 2 (41) are symmetrically installed on both sides of the bearing block (42), and a connecting plate that is rotatably connected to the outer wall of the mounting plate (39) is fixedly installed at the power output end of the hydraulic cylinder 2 (41). The inner cavity of the housing (6) is rotatably equipped with guide roller one (35) and guide roller two (36) for guiding the wire, and the outer walls of guide roller one (35) and guide roller two (36) are in contact with each other. A guide plate (22) for guiding the wire is installed on one side of the bottom of the housing (6) by a torsion spring. A cutting frame (14) is fixedly installed on one side of the inner cavity of the housing (6), and a hydraulic cylinder four (1) is fixedly installed on one side of the inner cavity of the cutting frame (14). A cutting blade (33) for cutting wire is fixedly installed at the power output end of the hydraulic cylinder four (1).

4. A rebar tying device for confined spaces according to claim 3, characterized in that: A bearing plate (17) is fixedly installed on one side of the telescopic end of the spring telescopic plate (19). A limit groove is opened on the side of the bearing plate (17) away from the spring telescopic plate (19). A support bar (15) is slidably installed in the inner cavity of the limit groove. A threaded hole is opened on the side wall of one end of the support bar (15) located in the inner cavity of the limit groove. A transmission threaded rod (16) is provided in the inner cavity of the threaded hole. The two ends of the transmission threaded rod (16) pass through the threaded hole and are rotatably connected to the inner wall of the limit groove. An installation rod (13) is rotatably installed on the side wall of the other end of the support bar (15). A unwinding reel (4) is movably sleeved on the outer wall of the installation rod (13). The outer wall of the unwinding reel (4) is evenly wound with iron wire for binding the intersection of the reinforcing bars. The housing (6) has a through hole adapted to the wire on the side near the unwinding reel (4), and a turning plate (34) for changing the direction of the wire movement is fixedly installed on one side of the inner cavity of the housing (6).

5. A rebar tying device for confined spaces according to claim 4, characterized in that: A load-bearing plate (12) is provided between two adjacent crossbeams (5). A clamping plate (43) is slidably sleeved on the outer wall of the load-bearing plate (12). A spring telescopic plate (45) is fixedly installed on one side of the clamping plate (43). The top of the spring telescopic plate (45) is fixedly connected to the bottom of the load-bearing plate (17). The inner wall of the clamp (43) is rotatably mounted with a load-bearing wheel (44) that fits against the outer wall of the load-bearing plate (12).

6. A rebar tying device for confined spaces according to claim 1, characterized in that: The displacement device includes a U-shaped plate (11) and an elastic plate (46). Multiple bases (48) are fixedly installed on the outer wall of the track (2). The top of the base (48) is rotatably mounted with a U-shaped plate (11) via a torsion spring. The elastic plate (46) is disposed in the inner cavity of the U-shaped plate (11), and one end of the elastic plate (46) is fixedly connected to one side of the inner cavity of the U-shaped plate (11). A slot is provided at the top of the U-shaped plate (11).

7. A rebar tying device for confined spaces according to claim 1, characterized in that: A cross plate (25) is fixedly installed between two cross beams (5). A hydraulic cylinder (3) is fixedly installed on the top of the cross plate (25). A mounting frame (24) is fixedly installed on the power output end of the hydraulic cylinder (3). A track (29) is rotatably installed on the bottom of the mounting frame (24). Multiple mounting slots are provided on the outer wall of the track (29). An electromagnet (32) is fixedly installed in the inner cavity of the mounting slot. A column (30) is fixedly installed on the side of the electromagnet (32) near the conveyor roller of the track (29). A conductive block (31) is fixedly installed on the end of the column (30) away from the electromagnet (32). The track 2 (29) is provided with a conductive slide rail (28) for energizing the electromagnet (32). The conductive slide rail (28) is fixedly mounted on both sides with connecting plates that are rotatably connected to the outer wall of the drive wheel. The mounting frame (24) is fixedly mounted on one side with a motor 5 for rotating the track 2 (29).

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