Prefabricated floor slab processing embedded steel bar protection device

Abstract

The application belongs to the technical field of floor processing auxiliary tools, and is especially a fabricated floor processing embedded steel bar protection device, which comprises a formwork, the top end of the formwork is symmetrically provided with two groups of vertical plates, the two ends of the two groups of vertical plates are both provided with horizontal plates inserted on the side walls, the inner wall of the horizontal plate is provided with a locking mechanism, and the inner cavity of the horizontal plate is provided with a sealing mechanism. The fabricated floor processing embedded steel bar protection device is provided with a limiting plate in a Z-shaped structure, when a staff member manually presses and rotates the rotating disc, the limiting cylinder can be driven to rotate synchronously, the limiting plate can be locked or loosened, the locking state of the two groups of vertical plates can be simultaneously released, the sealing strip on the side edge of the vertical plate can be extruded by the clamping block synchronously when the vertical plate is installed, the sealing strip can be tightly attached to the vertical plate, the sealing property of the vertical plate can be improved, and the sealing mechanism and the locking mechanism can be reset by the release key, so that quick disassembly operation is realized.

Description

Technical Field

[0001] This invention relates to the field of auxiliary tools for floor slab processing, specifically a protective device for embedded reinforcement in prefabricated floor slab processing. Background Technology

[0002] Prefabricated floor slabs are floor slabs that are prefabricated in a factory or on-site, and then manually or mechanically hoisted onto the building and grouted. This saves on formwork, improves efficiency, and shortens the construction period. During floor slab fabrication, a set of molds is typically assembled into a rectangular space. Reinforcing bars and triangular beams are then installed inside the molds before concrete is poured and the floor slab is installed. The molds help to restrict and protect the reinforcing bars during installation, facilitating their placement.

[0003] However, the existing molds are too complicated to install, making them difficult to install, disassemble, and operate quickly. Secondly, gaps may exist between the slabs during mold installation, which can easily cause excess protrusions or even leaks when pouring concrete, leading to the failure of the precast floor slab. Summary of the Invention

[0004] The purpose of this invention is to provide a protective device for embedded rebar during prefabricated floor slab processing, so as to solve the problems of existing protective devices for embedded rebar during prefabricated floor slab processing mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated floor slab processing embedded reinforcement protection device, comprising a template, wherein two sets of vertical plates are symmetrically arranged at the top of the template, and horizontal plates are inserted into the side walls at both ends of the two sets of vertical plates, a locking mechanism is provided in the inner wall of the horizontal plate, and a sealing mechanism is provided in the inner cavity of the horizontal plate.

[0006] Both ends of the two sets of vertical plates are provided with grooves, and the inner walls of the grooves are filled with sealing strips. Both ends of the vertical plates are fixedly connected with U-shaped limiting plates, and the upper and lower inner walls of the limiting plates are provided with limiting grooves.

[0007] The locking mechanism includes a drive chamber, in which two sets of lead screws are rotatably connected to the inner wall of the drive chamber. The two sets of lead screws are symmetrically arranged about the axis of the drive chamber. The front end of each set of lead screws is fixedly connected to a limiting cylinder. The inner wall of each limiting cylinder is provided with a threaded groove. The inner wall of each limiting cylinder is slidably connected to a plug rod. The two sets of plug rods are connected by a T-shaped connecting rod. The outer wall of the plug rod is fixedly connected with a protrusion. The outer diameter of the protrusion matches the inner diameter of the threaded groove. The front end of the connecting rod is provided with a driving component.

[0008] A limiting plate is fixedly connected to the top of the limiting cylinder, and the outer diameter of the limiting plate matches the inner diameter of the limiting groove.

[0009] Preferably, the driving component includes a take-up roller, the side wall of which is rotatably connected to the inner wall of the drive chamber, a telescopic spring is fixedly connected to the inner wall of the take-up roller, and a movable rod is fixedly connected to the front end of the telescopic spring. The movable rod and the take-up roller are connected by spline insertion. A toothed disc is fixedly connected to the front end of the movable rod, and a dial is fixedly connected to the front section of the toothed disc.

[0010] A steel cable is wound around the outer wall of the take-up roller, and the end of the steel cable is fixedly connected to the front end of the connecting rod.

[0011] Preferably, toothed blocks are fixedly connected to the inner wall of the drive compartment, and several toothed blocks are arranged in a circular array at equal intervals, and several toothed blocks mesh with the toothed disc.

[0012] Preferably, the drive component further includes a release key, the shaft end of which is rotatably connected to the outer wall of the dial.

[0013] Preferably, the sealing mechanism includes a sealing chamber, in which a clamping block is slidably connected to the inner wall of the sealing chamber, and two sets of clamping blocks are symmetrically arranged about the axis of the sealing chamber. A first rotating plate is hinged to the bottom end of the clamping block, and a movable sleeve is hinged to the top end of the first rotating plate. A trigger plate is slidably connected to the inner wall of the movable sleeve, and a second rotating plate is hinged to the top end of the trigger plate. The end of the second rotating plate is rotatably connected to the top wall of the sealing chamber.

[0014] Preferably, the sealing mechanism further includes a squeezing plate, the side wall of which is fixedly connected to the side wall of the trigger plate, the cross-section of which is L-shaped, a return spring is fixedly connected to the front end of which is fixedly connected to the end of which is fixedly connected to the inner wall of the sealing chamber, a baffle is fitted to the front end of which is fixedly connected to the bottom end of which is a movable frame, an inner hole is opened on the outer wall of which the movable frame is threaded with a lead screw.

[0015] Preferably, the bottom end of the extrusion plate has an inclined surface formed by machining, and the inclined surface is fitted to the side wall of the baffle.

[0016] Preferably, two sets of clamping blocks are symmetrically arranged about the side axis of the vertical plate, and the two sets of clamping blocks are fixedly connected to the same inner pressure plate at their lower ends. The clamping blocks, inner pressure plates and sealing strips are arranged at the same horizontal level.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. When using this device, the U-shaped limiting plate allows the limiting cylinder to rotate synchronously when the operator manually presses and rotates the dial, thus locking or unlocking the limiting plate and simultaneously releasing the locking state of the two sets of vertical plates.

[0019] 2. When using this device, the sealing mechanism allows the clamping block to be triggered simultaneously to squeeze the sealing strip on the side of the vertical plate during installation, ensuring that the sealing strip fits tightly against the vertical plate and increasing the sealing performance of the vertical plate.

[0020] 3. When using this device, the release key allows the sealing and locking mechanisms to be reset via the coil spring and return spring when the operator presses the dial, enabling quick disassembly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a cross-sectional view of the locking mechanism in this invention;

[0024] Figure 4 A schematic diagram of the end portion of the vertical plate in this invention;

[0025] Figure 5 Schematic diagram of the sealing mechanism of this invention;

[0026] Figure 6 This invention Figure 5 Enlarged structural diagram at point A in the middle;

[0027] Figure 7 Schematic diagram of the cross-sectional structure of the driving component in this invention;

[0028] Figure 8 A schematic diagram of the toothed block distribution structure in the horizontal plate of this invention;

[0029] Figure 9 Schematic diagram of the vertical plate three-dimensional structure of the present invention;

[0030] Figure 10 A schematic diagram of the connection structure between the limiting cylinder and the plug rod of the present invention.

[0031] In the diagram: 1. Template; 2. Vertical plate; 3. Horizontal plate; 4. Locking mechanism; 41. Drive chamber; 42. Lead screw; 43. Limiting cylinder; 45. Threaded groove; 46. Insert rod; 47. Protrusion; 48. Drive component; 481. Take-up roller; 482. Telescopic spring; 483. Movable rod; 484. Gear plate; 485. Dial plate; 486. Release key; 49. Limiting plate; 5. Sealing mechanism; 51. Sealing chamber; 52. Clamping block; 53. First rotating plate; 54. Movable sleeve; 55. Trigger plate; 56. Second rotating plate; 57. Extrusion plate; 58. Return spring; 59. Baffle; 510. Moving frame; 511. Inner pressure plate; 6. Sealing strip; 7. Limiting plate; 8. Limiting groove. Detailed Implementation

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

[0033] Please see Figure 1-10 The present invention provides a technical solution: a prefabricated floor slab processing embedded reinforcement protection device, including a template 1, two sets of vertical plates 2 are symmetrically arranged at the top of the template 1, and horizontal plates 3 are inserted into the side walls at both ends of the two sets of vertical plates 2. A locking mechanism 4 is provided in the inner wall of the horizontal plate 3, and a sealing mechanism 5 is provided in the inner cavity of the horizontal plate 3.

[0034] Both ends of the two sets of vertical plates 2 are provided with grooves, and the inner walls of the grooves are filled with sealing strips 6. Both ends of the vertical plates 2 are fixedly connected with U-shaped limiting plates 7. Limiting grooves 8 are provided on the inner walls of the upper and lower sides of the limiting plates 7. With the setting of the two sets of grooves and sealing strips 6, the connection end of the vertical plates 2 can be sealed during installation, thereby increasing the sealing effect and preventing concrete leakage.

[0035] The locking mechanism 4 includes a drive chamber 41. Two sets of lead screws 42 are rotatably connected to the inner wall of the drive chamber 41. The two sets of lead screws 42 are symmetrically arranged about the axis of the drive chamber 41. The front ends of the two sets of lead screws 42 are fixedly connected to a limiting cylinder 43. The inner walls of the two sets of limiting cylinders 43 are provided with threaded grooves 45. The inner walls of the two sets of limiting cylinders 43 are slidably connected to a plug rod 46. The two sets of plug rods 46 are connected by a T-shaped connecting rod. The outer wall of the plug rod 46 is fixedly connected to a protrusion 47. The outer diameter of the protrusion 47 matches the inner diameter of the threaded groove 45. The front end of the connecting rod is provided with a driving component 48.

[0036] A limiting plate 49 is fixedly connected to the top of the limiting cylinder 43, and the outer diameter of the limiting plate 49 matches the inner diameter of the limiting groove 8. Since threaded grooves 45 are opened in the inner walls of both sets of limiting cylinders 43, and a protrusion 47 is fixedly connected to the outer wall of the insertion rod 46, and the outer diameter of the protrusion 47 matches the inner diameter of the threaded groove 45, when the insertion rod 46 moves, the protrusion 47 moves in the threaded groove 45, pulling and driving the two sets of limiting cylinders 43 to rotate. At this time, the limiting plate 49 on the limiting cylinder 43 rotates into the limiting groove 8, directly limiting the limiting plate 7 set in the U-shaped structure, thereby limiting the insertion end of the vertical plate 2.

[0037] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the drive unit 48 includes a take-up roller 481, the side wall of the take-up roller 481 is rotatably connected to the inner wall of the drive chamber 41, a telescopic spring 482 is fixedly connected to the inner wall of the take-up roller 481, and a movable rod 483 is fixedly connected to the front end of the telescopic spring 482. The movable rod 483 and the take-up roller 481 are connected by spline insertion. A gear plate 484 is fixedly connected to the front end of the movable rod 483, and a dial 485 is fixedly connected to the front end of the gear plate 484.

[0038] A steel cable is wound around the outer wall of the take-up roller 481, and the end of the steel cable is fixedly connected to the front end of the connecting rod. The operator manually pinches the protrusion on the dial 485 and pushes the dial 485 inward. The dial 485 drives the toothed disc 484 to move inward, so that the outer teeth of the toothed disc 484 move away from the tooth block. At the same time, since the movable rod 483 and the take-up roller 481 are connected by splines, when the dial 485 is rotated, the dial 485 drives the take-up roller 481 to rotate. The steel cable on the take-up roller 481 drives the plug rod 46 to move towards the take-up roller 481 through the connecting rod.

[0039] In this embodiment, as Figure 7 and Figure 8 As shown, toothed blocks are fixedly connected to the inner wall of the drive compartment 41, and several toothed blocks are arranged in a circular array at equal intervals. Several toothed blocks mesh with the toothed disk 484. By meshing several toothed blocks with the outer teeth of the toothed disk 484, the position of the toothed disk 484 can be restricted, making it convenient for staff to perform installation or disassembly operations at any time.

[0040] In this embodiment, as Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the drive unit 48 also includes a release key 486. The shaft end of the release key 486 is rotatably connected to the outer wall of the dial 485. When the release key 486 is manually pressed, the dial 485 is pushed forward, causing the dial 485 to move forward and push the toothed disc 484 away from the toothed block. Since the release key 486 and the dial 485 are rotatably connected, the take-up roller 481 is reset by the coil spring, and the extrusion plate 57 is reset by the reset spring 58. The extrusion plate 57 pushes the moving frame 510 to move in the opposite direction, and at the same time drives the lead screw 42 to rotate, causing the limiting cylinder 43 to rotate in the opposite direction, releasing the restriction on the U-shaped limiting plate 7, making the horizontal plate 3 and the vertical plate 2 loose, which facilitates the demolding of the workers.

[0041] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the sealing mechanism 5 includes a sealing chamber 51. A clamping block 52 is slidably connected to the inner wall of the sealing chamber 51, and two sets of clamping blocks 52 are symmetrically arranged about the axis of the sealing chamber 51. A first rotating plate 53 is hinged to the bottom end of the clamping block 52, and a movable sleeve 54 is hinged to the top end of the first rotating plate 53. A trigger plate 55 is slidably connected to the inner wall of the movable sleeve 54, and a second rotating plate 56 is hinged to the top end of the trigger plate 55. The end of the second rotating plate 56 is rotatably connected to the top wall of the sealing chamber 51. When the limiting cylinder 43 rotates, the limiting cylinder 43 synchronously drives the lead screw 42 to rotate. 42 drives the movable frame 510 to slide to the right. At this time, because the front end of the extrusion plate 57 has a mechanically processed inclined surface, when the movable frame 510 moves to the right, it can push the extrusion plate 57 to move to the rear. The extrusion plate 57 moves backward and simultaneously pushes the trigger plate 55 to move backward. At the same time, the trigger plate 55 pushes the movable sleeve 54 to move backward and the movable sleeve 54 slides on the trigger plate 55. The first rotating plate 53 and the second rotating plate 56 on the movable sleeve 54 rotate synchronously. The first rotating plate 53 drives the clamping block 52 on one side to move inward and squeeze the sealing strip 6.

[0042] In this embodiment, as Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the sealing mechanism 5 also includes a pressing plate 57. The side wall of the pressing plate 57 is fixedly connected to the side wall of the trigger plate 55. The cross-section of the pressing plate 57 is L-shaped. A return spring 58 is fixedly connected to the front end of the pressing plate 57, and the end of the return spring 58 is fixedly connected to the inner wall of the sealing chamber 51. A baffle 59 is fitted to the front end of the pressing plate 57. A movable frame 510 is fixedly connected to the bottom end of the baffle 59. An inner hole is opened on the outer wall of the movable frame 510, and the movable frame 510 is threadedly engaged with the lead screw 42 through the inner hole. Since the bottom surface of the pressing plate 57 has a bevel formed by machining, when the pressing plate 57 is reset by the return spring 58, it pushes the movable frame 510 to slide in the opposite direction, which in turn drives the lead screw 42 to rotate in the opposite direction. The lead screw 42 drives the limiting cylinder 43 to rotate in the same direction, thereby pulling the plug rod 46 to reset and releasing the compression restriction on the sealing strip 6, which facilitates the quick disassembly operation by the staff.

[0043] In this embodiment, as Figure 5 and Figure 6 As shown, the bottom end of the extrusion plate 57 has a machined inclined surface, and the inclined surface is fitted to the side wall of the baffle 59. Because the bottom end of the extrusion plate 57 has a machined inclined surface, when the moving frame 510 moves to the right, it can push the extrusion plate 57 to move to the rear. As the extrusion plate 57 moves backward, the extrusion plate 57 simultaneously pushes the trigger plate 55 to move backward. At the same time, the trigger plate 55 pushes the movable sleeve 54 to move backward, and the movable sleeve 54 slides on the trigger plate 55.

[0044] In this embodiment, as Figure 5 and Figure 6 As shown, two sets of clamping blocks 52 are symmetrically arranged about the side axis of the vertical plate 2, and the same inner pressure plate 511 is fixedly connected to both ends of the two sets of clamping blocks 52. The clamping blocks 52, the inner pressure plate 511 and the sealing strip 6 are arranged at the same horizontal level. By setting the inner pressure plate 511 at the lower end of the clamping block 52, the inner pressure plate 511 moves synchronously when the clamping block 52 moves, increasing the compression area of ​​the sealing strip 6, increasing the sealing effect between the sealing strip 6 and the vertical plate 2, further increasing the sealing performance of the vertical plate 2, and preventing leakage during equipment use.

[0045] The method of use and advantages of this invention: The working process of this prefabricated floor slab reinforcement protection device is as follows:

[0046] like Figures 1 to 10As shown, the worker manually places the first set of horizontal plates 3 on the template 1 and locks the horizontal plates 3 on the template 1 with external bolts. Then, the worker manually aligns one side of the horizontal plate 3 with the inside of the drive chamber 41 and inserts it. At this time, the worker manually pinches the protrusion on the dial 485 and pushes the dial 485 inward. The dial 485 drives the gear plate 484 to move inward, so that the outer teeth of the gear plate 484 move away from the tooth block. At the same time, since the movable rod 483 and the take-up roller 481 are connected by splines, the worker rotates the dial 485. The dial 485 drives the take-up roller 481 to rotate. The steel cable on the take-up roller 481 drives the plug rod 46 to move towards the take-up roller 481 through the connecting rod.

[0047] Next, since threaded grooves 45 are provided in the inner walls of both sets of limiting cylinders 43, and protrusions 47 are fixedly connected to the outer wall of the plug rod 46, and the outer diameter of the protrusions 47 matches the inner diameter of the threaded grooves 45, when the plug rod 46 moves, it moves in the threaded grooves 45 through the protrusions 47, pulling and driving the two sets of limiting cylinders 43 to rotate. At this time, the limiting plate 49 on the limiting cylinder 43 rotates into the limiting groove 8, directly limiting the limiting plate 7 set in the U-shaped structure, thereby limiting the insertion end of the vertical plate 2.

[0048] Simultaneously, when the limiting cylinder 43 rotates, it synchronously drives the lead screw 42 to rotate. The lead screw 42 drives the moving frame 510 to slide to the right. At this time, because the front end of the extrusion plate 57 has a mechanically machined inclined surface, when the moving frame 510 moves to the right, it can push the extrusion plate 57 to move backward. The extrusion plate 57 moves backward, and simultaneously pushes the trigger plate 55 to move backward. At the same time, the trigger plate 55 pushes the movable sleeve 54 to move backward, and the movable sleeve 54 slides on the trigger plate 55. Furthermore, the first rotating plate 53 and the second rotating plate 56 on the movable sleeve 54 rotate synchronously. The rotating plate 53 drives the clamping block 52 on one side to move inward, squeezing the sealing strip 6 so that the sealing strip 6 and the inner wall of the vertical plate 2 fit tightly together, increasing the sealing at the connection between the vertical plate 2 and the horizontal plate 3. Then, the dial 485 is manually supported, so that the dial 485 moves back to its original position through the telescopic spring 482, so that the toothed disc 484 at the rear end of the dial 485 is inserted into the toothed block again, thereby restricting the dial 485 and realizing the installation on one side of the vertical plate 2. Then, the subsequent vertical plate 2 is inserted into the horizontal plate 3, and the above installation process is repeated. Then, another set of horizontal plates 3 is aligned with the two sets of vertical plates 2 and inserted for installation.

[0049] Finally, during disassembly, the release key 486 can be manually pressed, and the dial 485 can be pushed forward, causing the dial 485 to move forward and push the toothed disc 484 away from the toothed block. Since the release key 486 and the dial 485 are connected by a rotation, the take-up roller 481 is reset by the coil spring, and the extrusion plate 57 is reset by the return spring 58. The extrusion plate 57 pushes the moving frame 510 to move in the opposite direction, and at the same time drives the lead screw 42 to rotate, causing the limiting cylinder 43 to rotate in the opposite direction, releasing the restriction on the U-shaped limiting plate 7, and loosening the horizontal plate 3 and the vertical plate 2. At this time, the operator can remove the bolts on one set of horizontal plates 3, remove the horizontal plate 3, and manually pull out the two sets of vertical plates 2 for quick disassembly, which is convenient for the operator to disassemble the mold.

[0050] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. An assembled floor embedded bar processing protection device, comprising a formwork (1), characterized in that: The top end of the template (1) is symmetrically provided with two groups of vertical plates (2), and the two ends of the two groups of vertical plates (2) are both inserted with horizontal plates (3), the inner wall of the horizontal plate (3) is provided with a locking mechanism (4), and the inner cavity of the horizontal plate (3) is provided with a sealing mechanism (5); The front and rear ends of the two groups of vertical plates (2) are both provided with grooves, and the inner wall of the groove is filled with a sealing strip (6), and the front and rear ends of the vertical plate (2) are both fixedly connected with a limit plate (7) in the shape of a Chinese character, and the inner wall of the upper and lower sides of the limit plate (7) is both provided with a limit groove (8); The locking mechanism (4) comprises a driving bin (41), two groups of lead screws (42) are rotatably connected in the inner wall of the driving bin (41), the two groups of lead screws (42) are symmetrically provided about the axis of the driving bin (41), the front ends of the two groups of lead screws (42) are both fixedly connected with a limiting cylinder (43), the outer walls of the two groups of limiting cylinders (43) are both fixedly connected with a limiting block (44), the inner walls of the two groups of limiting cylinders (43) are both provided with a threaded groove (45), the inner walls of the two groups of limiting cylinders (43) are both slidably connected with an inserting rod (46), the two groups of inserting rods (46) are connected through a T-shaped connecting rod, the outer wall of the inserting rod (46) is fixedly connected with a protruding point (47), the outer diameter of the protruding point (47) matches the inner diameter of the threaded groove (45), and the front end of the connecting rod is provided with a driving piece (48); The outer diameter of the two limiting blocks (44) matches the inner diameter of the two limit grooves (8); The driving piece (48) comprises a winding roller (481), the side wall of the winding roller (481) is rotatably connected with the inner wall of the driving bin (41), the inner wall of the winding roller (481) is fixedly connected with a telescopic spring (482), the front end of the telescopic spring (482) is fixedly connected with a movable rod (483), the movable rod (483) and the winding roller (481) are inserted and connected through a spline, the front end of the movable rod (483) is fixedly connected with a gear disc (484), and the front end of the gear disc (484) is fixedly connected with a dial (485); The outer wall of the winding roller (481) is wound with a steel cable, and the end of the steel cable is fixedly connected with the front end of the connecting rod; The driving piece (48) further comprises a release key (486), and the shaft end of the release key (486) is rotatably connected with the outer wall of the dial (485); The sealing mechanism (5) comprises a sealing bin (51), the inner wall of the sealing bin (51) is slidably connected with a clamping block (52), the clamping block (52) is symmetrically provided about the axis of the sealing bin (51), the bottom end of the clamping block (52) is hingedly connected with a first rotating plate (53), the top end of the first rotating plate (53) is hingedly connected with a movable sleeve (54), the inner wall of the movable sleeve (54) is slidably connected with a trigger plate (55), the top end of the trigger plate (55) is hingedly connected with a second rotating plate (56), and the end of the second rotating plate (56) is rotatably connected with the top wall of the sealing bin (51). The sealing mechanism (5) further comprises an extrusion plate (57), a side wall of the extrusion plate (57) is fixedly connected with a side wall of the trigger plate (55), a cross section of the extrusion plate (57) is provided in an L-shaped structure, a front end of the extrusion plate (57) is fixedly connected with a return spring (58), a tail end of the return spring (58) is fixedly connected with an inner wall of the sealing bin (51), the front end of the extrusion plate (57) is abutted with a baffle (59), a bottom end of the baffle (59) is fixedly connected with a moving frame (510), an outer wall of the moving frame (510) is provided with an inner hole, and the moving frame (510) is threadedly arranged with the lead screw (42) through the inner hole; A plurality of tooth blocks are fixedly connected on the inner cavity wall of the driving bin (41) and are arranged in an equidistant annular array, and the plurality of tooth blocks are engaged with the toothed disc (484); The bottom end of the extrusion plate (57) has a machined inclined surface, and the inclined surface is abutted with a side wall of the baffle (59).

2. The prefabricated floor slab processing embedded steel bar protection device according to claim 1, characterized in that: The clamping blocks (52) are symmetrically arranged about the side surface axis of the vertical plate (2) in two groups, and the downward two ends of the two groups of clamping blocks (52) are fixedly connected with the same inner pressing plate (511), and the clamping blocks (52), the inner pressing plate (511) and the sealing strip (6) are arranged in the same horizontal direction.

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