Fabricated steel bar connecting device for house building construction

Abstract

The invention discloses an assembly type steel bar connecting device for house building construction, and relates to the technical field of steel bar welding, the assembly type steel bar connecting device comprises a rack, a movable frame is slidably mounted at the top of the rack, a fixed frame and a pushing device are fixedly mounted at the top of the rack, and the output end of the pushing device is fixedly connected with the movable frame; lever frames are arranged on the top of the movable frame and the top of the fixed frame correspondingly, limiting assemblies are arranged on the surfaces of the lever frames and comprise connecting blocks, the connecting blocks are slidably installed on the surfaces of the lever frames, and positioning blocks slidably penetrate through the bottoms of the connecting blocks. And meanwhile, the bent block on the moving plate can also extrude the deformed steel bar, and the bent block can be inserted into a spiral gap of the deformed steel bar, so that the bent block can further prevent the deformed steel bar from rotating during welding.

Description

Technical Field

[0001] This invention belongs to the field of steel bar welding, specifically relating to a prefabricated steel bar connection device for building construction. Background Technology

[0002] Rebar welding involves making slight contact between the end faces of the rebars, applying electricity to generate resistance heat and an electric arc (flash), melting the end faces, and then quickly upsetting and pressurizing to connect them.

[0003] Patent publication number CN210360002U relates to a rebar connection device for construction, belonging to the field of rebar connection technology. It includes a base, with a platform fixedly connected to the upper surface of the base, and a forward / reverse motor fixedly connected to the bottom surface of the platform. A threaded rod is fixedly connected to the output end of the forward / reverse motor. A first bearing is fixedly embedded in the inner bottom wall of the base, and the inner ring of the first bearing is fixedly connected to the bottom end of the threaded rod. This rebar connection device achieves the effect of moving a first and second fixing plate left and right via a slider, and has the function of fixing the rebar through two clamping blocks. It has the advantage of automated rebar clamping. Each screw hole has a screw threaded to its top, enabling vertical clamping of the rebar, further ensuring its stability. Each support plate has a through hole on one side, providing support for the rebar and improving its stability. Current technology can only weld vertically threaded steel bars. It is difficult to accurately weld threaded steel bars with bending angles, which can easily cause the bent threaded steel bars to rotate, affecting the welding effect. Since a certain amount of pressure is required during welding, insufficient pressure will also affect the welding effect. At the same time, because the threaded steel bars will have a conical protrusion when cut, the flat state of the threaded steel bar ends will affect the welding strength. Strong light and spatter will occur during welding. Direct exposure to the strong light will affect the health of workers. However, continuous protection of the welding position will affect the workers' observation of the welding effect. Summary of the Invention

[0004] The purpose of this invention is to provide a prefabricated steel bar connection device for building construction, which solves the problems that it is difficult to accurately maintain the threaded steel bars with bending angles for simple welding, and the bending threaded steel bars are prone to rotation, affecting the welding effect. Since a certain pressure is required during welding, insufficient pressure will also affect the welding effect.

[0005] To achieve the above objectives, the present invention provides a prefabricated steel bar connection device for building construction, comprising a frame, a movable frame slidably mounted on the top of the frame, a fixed frame and a pushing device fixedly mounted on the top of the frame, the output end of the pushing device being fixedly connected to the movable frame, a lever frame being provided on the top of both the movable frame and the fixed frame, a limiting component being provided on the surface of the lever frame, the limiting component including a connecting block, the connecting block being slidably mounted on the surface of the lever frame, a positioning block being slidably penetrating the bottom of the connecting block, a positioning plate being fixedly mounted on the top of both the movable frame and the fixed frame, a movable plate being slidably penetrating the bottom of the connecting block, an arc-shaped groove being formed at the bottom of the movable plate, a bending block being fixedly mounted inside the arc-shaped groove, a telescopic plate being fixedly mounted on the right side of the connecting block, a rubber block being slidably mounted on the free end of the telescopic plate, a connecting frame being fixedly mounted on the top of the rubber block, a clamping plate being slidably mounted on the left side of the lever frame, the left side of the clamping plate engaging with the connecting block, a strong spring being provided between the connecting block and the lever frame, the elastic force of the strong spring being able to push the connecting block to move in the welding direction.

[0006] In one or more embodiments of the present invention, a first spring is provided between the positioning block and the connecting block. The elastic force of the first spring can keep the positioning block clamping the threaded steel bar. The top of the positioning plate is provided with a semi-circular groove and an umbrella-shaped groove to accommodate threaded steel bars with more bending angles. A second spring is provided between the moving plate and the connecting block. The elastic force of the second spring can also keep the moving plate clamping the threaded steel bar and assist the moving plate in resetting downward.

[0007] In one or more embodiments of the present invention, the connecting frame passes through the lever frame, and the bottom of the card plate and the top of the connecting frame are provided with arc-shaped protrusions. The arc-shaped protrusions are for pushing the card plate upward and disengaging from the connecting block when the connecting frame moves. The fixed end and the free end of the telescopic plate are provided with a No. 3 spring, which supports the free end of the telescopic plate and the rubber block.

[0008] In one or more embodiments of the present invention, a grinding assembly is provided on the top of the frame. The grinding assembly includes a telescopic frame, which is fixedly installed on the top of the frame. A support plate is fixedly installed on the free top of the telescopic frame. A transmission rod is hinged to the top of the support plate. The end of the transmission rod away from the support plate is hinged to a connecting block. A telescopic stop plate is fixedly installed on the right side of the support plate. A return spring is provided inside the fixed end and the free end of the telescopic stop plate.

[0009] In one or more embodiments of the present invention, the grinding assembly further includes a slide rod that slides through a support plate. A force-bearing spring is provided between the slide rod and the support plate. Grinding machines are fixedly installed on both the left and right sides of the slide rod. The grinding machines grind the ends of the threaded steel to prevent the end face of the threaded steel from being tapered when it is cut. The grinding force will continue to increase as the threaded steel moves towards the center, which can improve the flatness of the end face of the threaded steel.

[0010] In one or more embodiments of the present invention, a protective component is provided on the surface of the support plate. The protective component includes a protective lens, which is rotatably mounted on the front of the support plate. An arc-shaped plate is fixedly mounted on the bottom of the protective lens. A telescopic rod is fixedly mounted on the right side of the support plate. A connecting plate is fixedly mounted on the free end of the telescopic rod. An insert rod is fixedly mounted on the left side of the connecting plate. A rotating block is fixedly mounted on the right side of the support plate. Spiral grooves are evenly formed inside the rotating block and on the circumferential surface of the insert rod. The inside of the rotating block is slidably connected to the insert rod. A push plate is rotatably mounted on the outer wall of the rotating block. A blocking block is fixedly mounted on the outer wall of the rotating block. The output shaft of the grinder is an elastic telescopic rod. A bearing is mounted on the free end of the elastic telescopic rod. The top of the connecting plate is fixedly connected to the outer wall of the bearing. The elastic telescopic rod can protect the grinder and prevent it from being forcibly squeezed. At the same time, the elasticity of the elastic telescopic rod can keep the grinder under a certain pressure when grinding threaded steel.

[0011] In one or more embodiments of the present invention, the blocking block is located at the bottom of the push plate. The blocking block can limit the push plate in one direction, so that the push plate can only rotate upward on the surface of the rotating block. The blocking block will prevent the push plate from rotating downward, so that the blocking block will not affect the arc plate driving the push plate to reset. An arc-shaped cylinder is fixedly installed on the right side of the support plate. A piston rod is slidably installed inside the arc-shaped cylinder. The end of the piston rod away from the arc-shaped cylinder is fixed to the arc plate.

[0012] In one or more embodiments of the present invention, a first torsion spring is provided between the protective lens and the support plate. The elastic force of the first torsion spring can cause the protective lens to return to its upward position when the push plate separates from the arc plate. A second torsion spring is provided between the push plate and the rotating block. The second torsion spring can cause the push plate to return to its original position. An exhaust pipe and a one-way valve are provided on the surface of the arc cylinder. The one-way valve is used to quickly introduce air into the arc cylinder so that the arc cylinder will not affect the downward rotation speed of the protective lens. The opening size of the exhaust pipe is much smaller than the opening size of the one-way valve, so that the exhaust pipe will reduce the exhaust speed of the arc cylinder, thereby reducing the upward return speed of the protective lens.

[0013] Compared with the prior art, the beneficial effects of the present invention are that the semi-circular groove and umbrella-shaped groove on the positioning block and positioning plate can position the threaded steel with more bending angles, avoiding the inability to accurately position the bent threaded steel. At the same time, the bending block on the moving plate will also squeeze the threaded steel. The bending block will be inserted into the spiral gap of the threaded steel, so that the bending block can further prevent the threaded steel from rotating during welding. When the threaded steel is squeezed and welded and displacement occurs, the rubber block will drive the connecting frame to push the clamping plate upward to release the limitation on the connecting block. The strong spring will push the connecting block to move towards the welding center position, avoiding insufficient extrusion pressure affecting the welding strength. The telescopic stop plate allows for precise adjustment of the spacing between two threaded steel bars, eliminating the need for manual measurement each time. This prevents inconsistent spacing from causing differences in processing pressure and affecting the welding effect. The transmission rod pushes the support plate and telescopic stop plate upwards in the left and right directions, causing the threaded steel bars to contact the grinding machine as they move towards the center. The grinding machine then grinds the ends of the threaded steel bars, preventing the end face from being tapered when cut. As the threaded steel bars continue to move towards the center, the grinding force continuously increases, improving the flatness of the end face of the threaded steel bars.

[0014] The protective lens and push plate allow the welded rebar to be blocked during welding. The protective lens can block the welding position to prevent the flash from damaging the worker's eyes and also block the sparks. Under the action of the arc-shaped cylinder and piston rod, the protective lens will slowly release the obstruction of the welding position, so as to prevent the protective lens from continuously blocking the welding position and affecting the worker's observation of the welding process. Attached Figure Description

[0015] Figure 1 This is an overall view of the frame in one embodiment of the present invention; Figure 2 This is a schematic diagram of the positioning plate and the movable frame in one embodiment of the present invention; Figure 3 This is a schematic diagram showing the positions of the telescopic rod and the support plate in one embodiment of the present invention; Figure 4 This is a schematic diagram showing the positions of the telescopic plate and the rubber block in one embodiment of the present invention; Figure 5 This is a partial cross-sectional view of the card plate and connecting block in one embodiment of the present invention; Figure 6 This is a schematic diagram showing the positions of the connecting block and the positioning block in one embodiment of the present invention; Figure 7 This is a schematic diagram showing the positions of the slide bar and the grinding machine in one embodiment of the present invention; Figure 8 This is a schematic diagram showing the positions of the protective lens and the curved plate in one embodiment of the present invention.

[0016] Explanation of key figure labels: 1. Frame; 2. Moving frame; 3. Fixed frame; 4. Pushing device; 5. Lever frame; 61. Connecting block; 62. Positioning block; 63. Positioning plate; 64. Moving plate; 65. Telescopic plate; 66. Rubber block; 67. Connecting frame; 68. Clamping plate; 71. Telescopic frame; 72. Support plate; 73. Transmission rod; 74. Telescopic stop plate; 75. Slide rod; 76. Grinding machine; 81. Protective lens; 82. Telescopic rod; 83. Connecting plate; 84. Arc plate; 85. Rotating block; 86. Insert rod; 87. Arc cylinder; 88. Pushing plate; 89. Piston rod. Detailed Implementation

[0017] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0018] like Figures 1-8 As shown, one embodiment of the present invention is: a prefabricated steel bar connection device for building construction, including a frame 1, a movable frame 2 slidably mounted on the top of the frame 1, a fixed frame 3 and a pushing device 4 fixedly mounted on the top of the frame 1, the output end of the pushing device 4 being fixedly connected to the movable frame 2, a lever frame 5 being provided on the top of both the movable frame 2 and the fixed frame 3, a driving device being provided on the back of the lever frame 5, the driving device being used to drive the lever frame 5 to rotate, a limiting component being provided on the surface of the lever frame 5, the limiting component including a connecting block 61, the connecting block 61 being slidably mounted on the surface of the lever frame 5, a positioning block 62 being slidably passed through the bottom of the connecting block 61, a positioning plate 63 being fixedly mounted on the top of both the movable frame 2 and the fixed frame 3, a movable plate 64 being slidably passed through the bottom of the connecting block 61, an arc-shaped groove being opened at the bottom of the movable plate 64, a bending block being fixedly mounted inside the arc-shaped groove, and the right side of the connecting block 61 being... A telescopic plate 65 is fixedly installed on the side, and a rubber block 66 is slidably installed on the free end of the telescopic plate 65. A connecting frame 67 is fixedly installed on the top of the rubber block 66. A clamping plate 68 is slidably installed on the left side of the lever frame 5. The left side of the clamping plate 68 is engaged with the connecting block 61. A strong spring is provided between the connecting block 61 and the lever frame 5. The elastic force of the strong spring can push the connecting block 61 to move in the welding direction, so as to avoid the bending of the threaded steel from being unable to be accurately positioned. The bending block on the moving plate 64 will also squeeze the threaded steel. The bending block will insert into the spiral gap of the threaded steel, so that the bending block can further prevent the threaded steel from rotating during welding. When the threaded steel is squeezed and displaced during welding, the rubber block 66 will drive the connecting frame 67 to push the clamping plate 68 to move upward to release the limit on the connecting block 61. The strong spring will push the connecting block 61 to move towards the welding center position, so as to avoid insufficient extrusion force affecting the welding strength.

[0019] A first spring is installed between the positioning block 62 and the connecting block 61. The elastic force of the first spring can keep the positioning block 62 clamping the threaded steel. The top of the positioning plate 63 is provided with a semi-circular groove and an umbrella-shaped groove, which can accommodate threaded steel with more bending angles. A second spring is installed between the moving plate 64 and the connecting block 61. The elastic force of the second spring can also keep the moving plate 64 clamping the threaded steel, and at the same time assist the moving plate 64 to reset downward.

[0020] The connecting frame 67 passes through the lever frame 5. The bottom of the card plate 68 and the top of the connecting frame 67 are both provided with arc-shaped protrusions. The arc-shaped protrusions are to push the card plate 68 upward and disengage from the connecting block 61 when the connecting frame 67 moves. The fixed end and the free end of the telescopic plate 65 are provided with a No. 3 spring. The No. 3 spring supports the free end of the telescopic plate 65 and the rubber block 66.

[0021] In this embodiment, the threaded steel bar is placed inside the semi-circular groove and umbrella-shaped groove on the top of the positioning plate 63. The front part of the lever frame 5 is pressed down, causing the lever frame 5 to move the connecting block 61 downward. The downward movement of the connecting block 61 causes the positioning block 62 and the moving plate 64 to move downward. When the positioning block 62 pushes downward, it squeezes the threaded steel bar. When the moving plate 64 moves downward, the curved block inside the arc groove inserts into the spiral gap of the threaded steel bar. When the connecting block 61 moves downward, it causes the telescopic plate 65 and the rubber block 66 to move downward. After the rubber block 66 moves downward, it squeezes onto the thread. The pushing device 4 pushes the moving frame 2 towards the fixed frame 3. The moving frame 2 causes the positioning plate 63 to move closer for welding. Next, the compressed rebar will be squeezed together. When the rebar is squeezed against the positioning plate 63 and displacement occurs, the movement of the rebar will drive the rubber block 66 to move away from the connecting block 61. The movement of the rubber block 66 will drive the connecting frame 67 to move. When the connecting frame 67 moves, the arc-shaped protrusion at the top of the connecting frame 67 will push the arc-shaped protrusion at the bottom of the clamping plate 68 to move the clamping plate 68 upward. The upward movement of the clamping plate 68 will disengage from the connecting block 61 and release the limiting effect on the connecting block 61. Under the action of the strong spring, it will push the connecting block 61 to move towards the welding position. The positioning block 62 and the moving plate 64 on the connecting block 61 will push the rebar to move in the welding direction to avoid displacement of the rebar and insufficient extrusion pressure.

[0022] Please see Figures 1-8Based on the above embodiments, in another embodiment of the present invention, a grinding assembly is provided on the top of the frame 1. The grinding assembly includes a telescopic frame 71, which is fixedly installed on the top of the frame 1. A support plate 72 is fixedly installed on the free top of the telescopic frame 71. A transmission rod 73 is hinged to the top of the support plate 72. The end of the transmission rod 73 away from the support plate 72 is hinged to the connecting block 61. A telescopic abutment plate 74 is fixedly installed on the right side of the support plate 72. A return spring is provided inside the fixed end and the free end of the telescopic abutment plate 74. This eliminates the need for manual measurement of the spacing each time, preventing differences in spacing from causing variations in processing pressure and affecting the welding effect.

[0023] The grinding assembly also includes a slide rod 75, which slides through the support plate 72. A force-bearing spring is installed between the slide rod 75 and the support plate 72. Grinding machines 76 are fixedly installed on both the left and right sides of the slide rod 75. The grinding machines 76 grind the ends of the threaded steel to prevent the end face of the threaded steel from being tapered when it is cut. The grinding force will continue to increase as the threaded steel moves towards the center, which can improve the flatness of the end face of the threaded steel.

[0024] A protective assembly is provided on the surface of the support plate 72. The protective assembly includes a protective lens 81, which is rotatably mounted on the front of the support plate 72. An arc-shaped plate 84 is fixedly mounted on the bottom of the protective lens 81. A telescopic rod 82 is fixedly mounted on the right side of the support plate 72. A connecting plate 83 is fixedly mounted on the free end of the telescopic rod 82. An insert rod 86 is fixedly mounted on the left side of the connecting plate 83. A rotating block 85 is fixedly mounted on the right side of the support plate 72. Spiral grooves are evenly formed inside the rotating block 85 and on the circumferential surface of the insert rod 86. The rotating block 85 and the insert rod 86 are slidably connected. A push plate 88 is rotatably mounted on the outer wall of the rotating block 85, and a blocking block is fixedly mounted on the outer wall of the rotating block 85. The output shaft of the grinder 76 is an elastic telescopic rod, and a bearing is installed at the free end of the elastic telescopic rod. The top of the connecting plate 83 is fixedly connected to the outer wall of the bearing. The elastic telescopic rod can protect the grinder 76 and prevent it from being forcibly squeezed. At the same time, the elasticity of the elastic telescopic rod can keep the grinder 76 under certain pressure when grinding the threaded steel, so as to avoid damage to the eyes of the workers caused by the flash generated during welding, and can also block the generated sparks.

[0025] The blocking block is located at the bottom of the push plate 88. The blocking block can limit the push plate 88 in one direction, so that the push plate 88 can only rotate upward on the surface of the rotating block 85. The blocking block will prevent the push plate 88 from rotating downward, so that the blocking block will not affect the arc plate 84 from driving the push plate 88 to reset. An arc cylinder 87 is fixedly installed on the right side of the support plate 72. A piston rod 89 is slidably installed inside the arc cylinder 87. The end of the piston rod 89 away from the arc cylinder 87 is fixed to the arc plate 84.

[0026] A first torsion spring is provided between the protective lens 81 and the support plate 72. The elastic force of the first torsion spring can cause the protective lens 81 to return to its upward position when the push plate 88 is separated from the arc plate 84. A second torsion spring is provided between the push plate 88 and the rotating block 85. The second torsion spring can cause the push plate 88 to return to its position. An exhaust pipe and a one-way valve are provided on the surface of the arc cylinder 87. The one-way valve is used to quickly introduce air into the arc cylinder 87 so that the arc cylinder 87 will not affect the downward rotation speed of the protective lens 81. The opening size of the exhaust pipe is much smaller than the opening size of the one-way valve, so that the exhaust pipe will reduce the exhaust speed of the arc cylinder 87, thereby reducing the upward return speed of the protective lens 81.

[0027] In this embodiment, when the rebar is placed, the left rebar is attached to the top of the grinder 76, and the right rebar is attached to the right side of the telescopic abutment plate 74. When the moving frame 2 moves, it will drive the lever frame 5 and the connecting block 61 to move. When the connecting block 61 moves, it will drive the transmission rod 73 to move, so that the transmission rod 73 will push the support plate 72 to move upward. When the support plate 72 moves upward, it will drive the telescopic abutment plate 74 and the grinder 76 to move upward, so that the rebars on both sides of the support plate 72 will come into contact with the grinder 76. As the two rebars gradually approach each other, the rebars will gradually increase their contact force with the grinder 76, thus improving the grinding effect. When the two threaded rods approach the extrusion grinder 76, the elastic telescopic rod on the grinder 76 is compressed and contracts. This contraction causes the bearing to move, which in turn moves the connecting plate 83. The connecting plate 83 then moves the insert rod 86, causing its spiral groove to insert into the rotating block 85. This pushes the rotating block 85 to rotate, causing the push plate 88 to rotate upwards. The upward rotation of the push plate 88 brings it into contact with the arc-shaped plate 84, causing it to rotate and push the arc-shaped plate 84 and the protective lens 81 downwards. The downward rotation of the protective lens 81 then... The flash generated during the welding of threaded steel is blocked. As the arc plate 84 continues to rotate, the push plate 88 will disengage from the arc plate 84. Under the action of the first torsion spring, the protective lens 81 and the arc plate 84 will be reset. When the arc plate 84 is reset, it will push the piston rod 89 to move into the arc cylinder 87. The piston rod 89 will squeeze the air inside the arc cylinder 87 and discharge it from the exhaust pipe. The slow exhaust from the exhaust pipe will limit the exhaust speed inside the arc cylinder 87, so that the piston rod 89 can only move slowly into the arc cylinder 87. This can reduce the upward rotation speed of the protective lens 81 and prevent the protective lens 81 from immediately resetting and failing to block the flash.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A prefabricated reinforcing bar connecting device for housing construction work, characterized by The utility model provides a kind of movable frame and fixed frame top lever frame, it is equipped with limiting assembly on the surface of lever frame, limiting assembly includes connecting block, connecting block is slidably installed on the surface of lever frame, the bottom of connecting block is slidably penetrated with positioning block, the top of movable frame and fixed frame is fixedly installed with positioning plate, the bottom of connecting block is slidably penetrated with moving plate, the bottom of moving plate is equipped with arc slot, and the inside of arc slot is fixedly installed with curved block, the right side of connecting block is fixedly installed with telescopic plate, the free end of telescopic plate is slidably installed with rubber block, the top of rubber block is fixedly installed with connecting frame, the left side of lever frame is slidably installed with clamping plate, and the left side of clamping plate is connected with connecting block, and strong spring is arranged between connecting block and lever frame, and the top of rack (1) is equipped with grinding assembly.

2. The prefabricated reinforcing steel connecting device for house construction according to claim 1, characterized in that, The inside between positioning block (62) and connecting block (61) is provided with a spring, the top of positioning plate (63) is equipped with semicircular groove and umbrella-shaped groove, and the inside between moving plate (64) and connecting block (61) is provided with a spring.

3. The prefabricated reinforcing steel connecting device for house construction according to claim 2, characterized in that, The connecting frame (67) penetrates lever frame (5), and the bottom of clamping plate (68) and the top of connecting frame (67) are provided with arc protrusions, and the inside of fixed end of telescopic plate (65) and free end is provided with a spring.

4. The prefabricated reinforcing steel connecting device for housing construction according to claim 3, characterized in that, The top of telescopic frame (71) is fixedly installed in rack (1), the free top of telescopic frame (71) is fixedly installed with support plate (72), the top of support plate (72) is hinged with transmission rod (73), the end of transmission rod (73) away from support plate (72) is hinged with connecting block (61), the right side of support plate (72) is fixedly installed with telescopic resistance plate (74), and the inside of fixed end and free end of telescopic resistance plate (74) is provided with reset spring.

5. The prefabricated reinforcing connecting device for house construction according to claim 4, characterized in that, The top of telescopic frame (71) is fixedly installed in rack (1), the free top of telescopic frame (71) is fixedly installed with support plate (72), the top of support plate (72) is hinged with transmission rod (73), the end of transmission rod (73) away from support plate (72) is hinged with connecting block (61), the right side of support plate (72) is fixedly installed with telescopic resistance plate (74), and the inside of fixed end and free end of telescopic resistance plate (74) is provided with reset spring.

6. The prefabricated reinforcing connecting device for house construction according to claim 5, characterized in that, The surface of the support plate (72) is provided with a protection assembly, the protection assembly comprises a protection lens (81), the protection lens (81) is rotatably installed on the front of the support plate (72), the bottom of the protection lens (81) is fixedly installed with an arc-shaped plate (84), the right side of the support plate (72) is fixedly installed with a telescopic rod (82), the free end of the telescopic rod (82) is fixedly installed with a connecting plate (83), the left side of the connecting plate (83) is fixedly installed with a plug rod (86), the right side of the support plate (72) is fixedly installed with a rotating block (85), the inside of the rotating block (85) and the circumference of the plug rod (86) are uniformly provided with spiral grooves, the rotating block (85) is slidably connected with the plug rod (86), the outer wall of the rotating block (85) is rotatably installed with a push plate (88), the outer wall of the rotating block (85) is fixedly installed with a blocking block, the output shaft of the sander (76) is an elastic telescopic rod, the free end of the elastic telescopic rod is installed with a bearing, and the top of the connecting plate (83) is fixedly connected with the outer wall of the bearing.

7. The prefabricated reinforcing connecting device for house construction according to claim 6, characterized in that, The blocking block is located at the bottom of the push plate (88), the right side of the support plate (72) is fixedly installed with an arc-shaped air cylinder (87), the inside of the arc-shaped air cylinder (87) is slidably installed with a piston rod (89), and one end, away from the arc-shaped air cylinder (87), of the piston rod (89) is fixedly connected with the arc-shaped plate (84).

8. The prefabricated reinforcing connecting device for house construction according to claim 7, characterized in that, A first torsion spring is arranged between the protection lens (81) and the support plate (72), a second torsion spring is arranged between the push plate (88) and the rotating block (85), and the surface of the arc-shaped air cylinder (87) is provided with an exhaust pipe and a one-way valve.

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