Node connecting device for multi-layer assembly type steel structure modular house

Abstract

The invention discloses a multi-layer assembly type steel structure modularized house joint connecting device, and particularly relates to the technical field of house joint connection, which comprises a mounting block, a linkage electric cylinder, a push block and two side limiting butt joint mechanisms, each two-side limiting butt joint mechanism comprises two hinge shafts, a sleeve rod, a linkage shaft, a connecting block, a sliding block and a sliding frame, a distance sensor is arranged above the connecting block, the distance sensor is fixedly connected with the sliding frame, a sensing block is installed on one side of the distance sensor, and the sensing block is fixedly connected with the other sliding frame; and a vertical adjusting and limiting connecting mechanism is mounted in the sliding frame. The two-side limiting butt joint mechanism is adopted, so that the beneficial effects that more time and labor are saved during external reinforcing connection of the multiple steel structure house layers, and the connecting accuracy of all joints is greatly improved are achieved, and therefore the problem that the connecting accuracy is poor is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of house node connection, and more specifically, to a node connection device for a multi-layer assembled steel structure modular house. Background Art

[0002] The node connection device of the multi-layer assembled steel structure modular house mainly adopts a standardized design through the node connection device, making the connection between the modules simple and fast, greatly shortening the construction period. Secondly, it reduces on-site operations. Many connection tasks can be prefabricated in the factory, reducing the complexity and uncertainty of on-site construction and improving the overall construction efficiency.

[0003] In the existing public documents, patent announcement number CN106522363A discloses a modular steel frame connection device, which mainly enhances the firmness between the frames to avoid the risk caused by loose screws or bolts; by pre-processing the modular steel frame in the factory before construction on the construction site, the on-site construction time is greatly shortened, and it will not cause too much impact on the on-site environment. However, the connection device has the following defects: When the connecting device is used to connect the nodes of multi-story prefabricated steel structure modular house, although each node position can be docked, it is difficult to realize the reinforcement connection of each node outside the multi-story prefabricated steel structure modular house node according to actual needs during the node docking process. In this way, the outer reinforcement position is very easy to be misplaced, resulting in the subsequent external reinforcement connection being more time-consuming and labor-intensive, and the connection accuracy is poor. This requires a multi-story prefabricated steel structure modular house node connection device. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a node connection device for a multi-layer assembled steel structure modular house.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a node connection device for a multi-layer assembled steel structure modular house, comprising a mounting block, a linkage electric cylinder and a push block, wherein the linkage electric cylinder is fixed to one side of the mounting block, the push block is fixedly connected to the output end of the linkage electric cylinder, and the upper surface of the push block is provided with a limit docking mechanism on both sides; The two-side limiting docking mechanism includes two hinge shafts fixed on the upper surface of the push block, the outer wall of each hinge shaft is rotatably connected with a sleeve rod, the inner wall of the sleeve rod is rotatably connected with a linkage shaft at a position away from the hinge shaft, and a connecting block is fixedly installed on the top of the linkage shaft; a slider is fixedly connected to one side of the connecting block, a slide frame is fixedly connected to the upper surface of the slider, and a distance sensor is provided above the connecting block, the distance sensor and the slide frame are fixedly connected, a sensing block is installed on one side of the distance sensor, and the sensing block is fixedly connected to another slide frame; a vertical adjustment limiting connecting mechanism is installed inside the slide frame.

[0006] Preferably, the two hinge shafts are symmetrically arranged about the middle of the push block, and the cross-sectional shapes of the linkage shaft and the hinge shaft are both circular, the upper surface of the distance sensor is in the same horizontal plane as the upper surface of the induction block, and the vertical cross-sectional shape of the induction block is rectangular, the outer wall of the mounting block and located on one side adjacent to the linkage electric cylinder is fixedly installed with a battery, and the outer wall of the mounting block and located on the other side adjacent to the linkage electric cylinder is fixedly installed with a wireless controller; the battery is used to power the wireless controller. A plurality of steel structure housing layers are arranged on the other side of the mounting block, and the bottom end of one of the steel structure housing layers is fixedly connected to a foundation; the outer wall of the slider is slidably connected with a guide frame, and the guide frame is fixedly installed between the mounting block.

[0007] In this technical solution, the linkage electric cylinder pushes the push block to move right, the push block drives the two articulated shafts to move right, the sleeve rod drives the linkage shaft to move backward, the other linkage shaft moves forward, and the two linkage shafts approach each other. The connecting block drives the slider to move backward along the inner wall of the guide frame, the slide frame drives the distance sensor to move backward, the distance sensor approaches the position of the sensing block, and the distance sensor senses the distance between the distance sensor and the sensing block. When the distance value sensed by the distance sensor is the same as the value set by the wireless controller, the linkage electric cylinder is closed by the wireless controller. In this way, the slide frame drives the linkage screw to move backward, the sleeve block drives the positioning frame to move backward, the two front positioning frames located on one side of the mounting block move backward, and the two rear positioning frames located on the other side of the mounting block move forward.

[0008] Preferably, the vertical adjustment limit connection mechanism includes a linkage screw rotatably mounted inside the sliding frame; the outer wall of the linkage screw is threadedly connected to two sleeve blocks, and a reduction motor is fixedly mounted on the top of the sliding frame, the reduction motor is used to drive the linkage screw to rotate, a positioning frame is welded on one side of each sleeve block, a node docking groove is provided on one side of each positioning frame, a positioning groove block is provided on one side of the node docking groove, and the positioning groove block and the positioning frame are integrally formed by die casting; a rear limit assembly is installed inside the two positioning frames. The two sleeve blocks are slidably connected to the sliding frame, and the two threads on the outer wall of the linkage screw are opposite and symmetrical.

[0009] In this technical solution, two reduction motors are started, and the two reduction motors drive the two linkage screws to rotate respectively. The linkage screws drive the two socket blocks to approach each other under the action of the thread transmission force, and the positioning frame below moves upward, and then the node-installed plate is directly inserted into the node docking groove. The node-installed plate can be docked with the steel structure house layer and then welded to achieve precise positioning and docking operation, and at the same time, the plate installed in the front is inserted into the positioning groove block.

[0010] Preferably, the rear limit assembly includes a pushing electric cylinder fixedly arranged inside the positioning frame; a rotating motor is fixedly installed on the output end of the pushing electric cylinder, and a rotating rod is fixedly connected to the output end of the rotating motor, and the outer wall of the rotating rod is rotatably connected to a bearing sleeve, and the bearing sleeve is fixedly installed between the positioning frame; one end of the rotating rod is fixedly connected to a rotating plate, a limiting side groove plate is welded on one end of the rotating plate, and one end of the limiting side groove plate is fixedly connected to a limiting block, a node side groove is opened on one side of the limiting side groove plate, the rotating motor is used to drive the rotating rod to rotate, and the outer wall of the rotating rod and the inner wall of the bearing sleeve are both smooth surfaces.

[0011] In this technical solution, the rotating motor drives the rotating rod to rotate counterclockwise, the rotating rod drives the rotating plate to rotate counterclockwise, the limiting side groove plate causes the limiting block to rotate counterclockwise, the limiting side groove plate is located at the node position where the two steel structure house layers are connected, the rotating motor drives the rotating rod to contract, and the rotating plate drives the limiting side groove plate to fit the limiting side groove plate to the rear node position of the steel structure house layer, and the node mounting plate is welded and installed to the rear node position of the steel structure house layer.

[0012] Technical effects and advantages of the present invention: 1. The present invention adopts a two-side limit docking mechanism, and starts the linkage electric cylinder through the wireless controller. The linkage electric cylinder pushes the push block to move right, and the two hinged shafts carry the right ends of the two sleeve rods to move right respectively, and the sleeve rods will drive the linkage shaft to move backward, and the other linkage shaft will move forward. The sliding frame drives the distance sensor to move backward, and the distance sensor approaches the position of the sensing block. When the distance value sensed by the distance sensor is the same as the value set by the wireless controller, the linkage electric cylinder is closed through the wireless controller, so that the nodes on both sides of multiple steel structure house layers can be accurately positioned and connected, and the peripheral reinforcement positions of multiple steel structure house layers can avoid misalignment. The external reinforcement connection of multiple steel structure house layers in the later stage is more time-saving and labor-saving, and the accuracy of the connection of each node is greatly improved.

[0013] 2. The present invention adopts a vertical adjustment limit connection mechanism to start two reduction motors. The two reduction motors respectively drive the two linkage screws to rotate. The linkage screws drive the two socket blocks to approach each other under the action of the thread transmission force. At the same time, the socket blocks drive the positioning frame to move downward, and then the node-installed plate is directly inserted into the node docking groove. The node installation plate is located at the node position where the two steel structure house layers are connected, so that precise positioning and docking operations can be achieved, and misaligned installation of the node installation plate can be avoided. Multiple superimposed steel structure house layers can achieve vertical precise docking.

[0014] 3. The present invention adopts a rear limit assembly, and the rotating motor drives the rotating rod to rotate counterclockwise, and the rotating rod rotates counterclockwise along the inner wall of the bearing sleeve, and the rotating plate drives the limiting side slot plate to rotate counterclockwise, and the limiting side slot plate makes the limiting block rotate counterclockwise, and the rotating plate drives the limiting side slot plate to rotate counterclockwise, and the limiting side slot plate makes the limiting block rotate counterclockwise, and the rotating plate drives the limiting side slot plate to fit the limiting side slot plate to the rear node position of the steel structure house layer, and each node installation can be positioned and installed according to the specified position, which greatly improves the installation accuracy.

[0015] According to the mutual influence of the above-mentioned multiple effects, firstly, the nodes on both sides of multiple steel structure house layers are precisely positioned and connected, and then the linkage screw drives the two socket blocks to approach each other under the action of the thread transmission force, and the node installation plate is located at the node position of the connection between the two steel structure house layers. Finally, the node installation plate is located at the node position of the connection between the two steel structure house layers, and each node installation can be positioned and installed according to the specified position. In summary, the peripheral reinforcement position of multiple steel structure house layers is more accurate, avoiding node installation misalignment, and the external reinforcement connection of multiple steel structure house layers in the later stage is more efficient. The node connection of multiple steel structure house layers is more time-saving and labor-saving, and the connection accuracy is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the node connection device of the multi-story assembled steel structure modular house of the present invention.

[0017] Figure 2 It is a schematic diagram of the local structure of the connection between the mounting block and the linkage electric cylinder of the present invention.

[0018] Figure 3 It is a schematic diagram of the partial structure of the connection between the positioning frame and the socket block of the present invention.

[0019] Figure 4 It is a side structural schematic diagram of the node connection device of the multi-story assembled steel structure modular house of the present invention.

[0020] Figure 5 It is a schematic diagram of the local structure of the connection between the positioning frame and the pushing electric cylinder of the present invention.

[0021] Figure 6 It is a schematic diagram of the partial structure of the rear limit assembly of the present invention from top view.

[0022] The accompanying drawings are marked as follows: 1. mounting block; 2. linkage electric cylinder; 3. pushing block; 4. articulated shaft; 5. sleeve rod; 6. linkage shaft; 7. connecting block; 8. slider; 9. slide frame; 10. distance sensor; 11. induction block; 12. battery; 13. wireless controller; 14. steel structure house layer; 15. foundation; 16. guide frame; 17. linkage screw; 18. reduction motor; 19. sleeve block; 20. positioning frame; 21. node docking groove; 22. positioning groove block; 23. pushing electric cylinder; 24. rotating motor; 25. bearing sleeve; 26. rotating rod; 27. rotating plate; 28. limit side groove plate; 29. ​​limit block; 30. node side groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] As attached Figure 1-6 The multi-story assembled steel structure modular house node connection device shown in the figure is provided with two-side limit docking mechanisms, a vertical adjustment limit connection mechanism, and a rear limit assembly. The settings of each mechanism and assembly can make the peripheral reinforcement position of multiple steel structure house layers 14 more accurate, avoid node installation misalignment, and make the external reinforcement connection of multiple steel structure house layers 14 more efficient in the later stage. The node connection of multiple steel structure house layers 14 is more time-saving and labor-saving to use, and the connection accuracy is greatly improved. The specific structural settings of each mechanism and assembly are as follows.

[0025] In this embodiment, as shown in the attached Figure 1-2 As shown, the linkage electric cylinder 2 is fixed on one side of the mounting block 1, the push block 3 is fixedly connected to the output end of the linkage electric cylinder 2, and the upper surface of the push block 3 is provided with a limit docking mechanism on both sides; the limit docking mechanism on both sides includes two hinge shafts 4 fixed on the upper surface of the push block 3, the outer wall of each hinge shaft 4 is rotatably connected with a sleeve rod 5, the inner wall of the sleeve rod 5 and the position away from the hinge shaft 4 is rotatably connected with a linkage shaft 6, and a connecting block 7 is fixedly installed on the top of the linkage shaft 6; a slider 8 is fixedly connected to one side of the connecting block 7, a slide frame 9 is fixedly connected to the upper surface of the slider 8, and a distance sensor 10 is provided above the connecting block 7, the distance sensor 10 and the slide frame 9 are fixedly connected, a sensing block 11 is installed on one side of the distance sensor 10, and the sensing block 11 is fixedly connected to another slide frame 9; a vertical adjustment limit connecting mechanism is installed inside the slide frame 9.

[0026] In this embodiment, as shown in the attached Figure 2 As shown, a battery 12 is fixedly installed on the outer wall of the mounting block 1 and located on one side adjacent to the linked electric cylinder 2, and a wireless controller 13 is fixedly installed on the outer wall of the mounting block 1 and located on the other side adjacent to the linked electric cylinder 2; the battery 12 is used to power the wireless controller 13, so that the battery 12 powers the wireless controller 13, and the wireless controller 13 starts the linked electric cylinder 2, so that the linked electric cylinder 2 can be stably pushed for use.

[0027] A plurality of steel structure house layers 14 are provided on the other side of the mounting block 1, and a foundation 15 is fixedly connected to the bottom end of one of the steel structure house layers 14, so that the plurality of steel structure house layers 14 can be stacked together for hoisting connection, and the foundation 15 provides reinforcement support to the bottom steel structure house layer 14, thereby greatly improving the stability of the support for the plurality of steel structure house layers 14.

[0028] In this embodiment, as shown in the attached Figure 3-4 As shown, the vertical adjustment limit connection mechanism includes a linkage screw 17 rotatably installed inside the sliding frame 9; the outer wall of the linkage screw 17 is threadedly connected to two sleeve blocks 19, and a reduction motor 18 is fixedly installed on the top of the sliding frame 9. The reduction motor 18 is used to drive the linkage screw 17 to rotate. A positioning frame 20 is welded on one side of each sleeve block 19, and a node docking groove 21 is opened on one side of each positioning frame 20; the rear limit assembly is installed inside the two positioning frames 20. The two sleeve blocks 19 are slidably connected to the sliding frame 9, and the two threads on the outer wall of the linkage screw 17 are opposite and symmetrical.

[0029] In this embodiment, as shown in the attached Figure 5-6As shown, the rear limit assembly includes a push electric cylinder 23 fixedly arranged inside the positioning frame 20; a rotating motor 24 is fixedly installed at the output end of the push electric cylinder 23, and a rotating rod 26 is fixedly connected to the output end of the rotating motor 24, and a bearing sleeve 25 is rotatably connected to the outer wall of the rotating rod 26, and the bearing sleeve 25 is fixedly installed between the positioning frame 20; a rotating plate 27 is fixedly connected to one end of the rotating rod 26, and a limited side groove plate 28 is welded to one end of the rotating plate 27, and a limited block 29 is fixedly connected to one end of the limited side groove plate 28, and a node side groove 30 is opened on one side of the limited side groove plate 28. The rotating motor 24 is used to drive the rotating rod 26 to rotate, and the outer wall of the rotating rod 26 and the inner wall of the bearing sleeve 25 are both smooth surfaces.

[0030] The use principle of the node connection device of the multi-layer assembled steel structure modular house of the present invention is as follows: Step 1: When multi-layer assembled steel structure modular houses are stacked and connected, multiple steel structure house layers 14 are stacked together for hoisting connection, and the bottom steel structure house layer 14 is provided with reinforcement support through the foundation 15 to increase the high stability when multiple steel structure house layers 14 are stacked and used.

[0031] Step 2. When the two sides are limitedly connected, the mounting block 1 is fixedly connected to the foundation 15 by bolts, and the wireless controller 13 is powered by the battery 12. The wireless controller 13 starts the linkage electric cylinder 2, and the linkage electric cylinder 2 pushes the push block 3 to move right, and the push block 3 drives the two articulated shafts 4 to move right. The two articulated shafts 4 carry the right ends of the two sleeve rods 5 to move right respectively, and the sleeve rod 5 will drive the linkage shaft 6 to move backward, and the other linkage shaft 6 will move forward, and the two linkage shafts 6 will approach each other.

[0032] At the same time, the linkage shaft 6 drives the connection block 7 to move backward, the connection block 7 drives the slider 8 to move backward along the inner wall of the guide frame 16, and the slider 8 drives the slide frame 9 to move backward. At the same time, the slide frame 9 drives the distance sensor 10 to move backward, and the distance sensor 10 approaches the position of the induction block 11. The distance sensor 10 senses the distance between the distance sensor 10 and the induction block 11. When the distance value sensed by the distance sensor 10 is the same as the value set by the wireless controller 13, the linkage electric cylinder 2 is closed by the wireless controller 13. In this way, the slide frame 9 drives the linkage screw 17 to move backward, the linkage screw 17 drives the socket block 19 to move backward, and the socket block 19 drives the positioning frame 20 to move backward, so that the two front positioning frames 20 located on one side of the installation block 1 move backward, and the two rear positioning frames 20 located on the other side of the installation block 1 move forward.

[0033] Step 3, when adjusting the limit connection vertically, start two reduction motors 18 at the same time, and the two reduction motors 18 drive the two linkage screws 17 to rotate respectively. The linkage screws 17 rotate inside the sliding frame 9, and the linkage screws 17 drive the two socket blocks 19 to approach each other under the action of the thread transmission force. At the same time, the socket blocks 19 drive the positioning frame 20 to move downward, and the positioning frame 20 below moves upward, and the vertical spacing between the two positioning frames 20 is adjusted, and then the plate installed at the node is directly inserted into the node docking groove 21. The node installation plate is located at the node position at the connection of the two steel structure house layers 14. The node installation plate can be docked with the steel structure house layer 14 and then welded to achieve precise positioning docking operation and avoid misalignment of the node installation plate. At the same time, the plate installed in the front is inserted into the positioning groove block 22, and the limit welding can be achieved at the connection position of the two steel structure house layers 14, so that the superimposed multiple steel structure house layers 14 can be firmly docked and installed.

[0034] Step 4: When the rear limit connection is made, the rotating motor 24 drives the rotating rod 26 to rotate counterclockwise, the rotating rod 26 rotates counterclockwise along the inner wall of the bearing sleeve 25, the rotating rod 26 drives the rotating plate 27 to rotate counterclockwise, the rotating plate 27 drives the limiting side slot plate 28 to rotate counterclockwise, and the limiting side slot plate 28 causes the limiting block 29 to rotate counterclockwise, so that the limiting side slot plate 28 is located at the node position where the two steel structure house layers 14 are connected, and then the rotating motor 24 is driven to shrink by pushing the electric cylinder 23, the rotating motor 24 drives the rotating rod 26 to shrink, and the rotating rod 26 drives the rotating plate 27 to move right along the inner wall of the bearing sleeve 25. At the same time, the rotating plate 27 drives the limiting side slot plate 28 to fit the limiting side slot plate 28 at the rear node position of the steel structure house layer 14, and then the node installation plate is inserted into the node side slot 30, and the node installation plate is welded and installed with the rear node position of the steel structure house layer 14, so that multiple steel structure house layers 14 are docked and installed.

[0035] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A node connection device for a multi-story assembled steel structure modular house, comprising a mounting block (1), a linkage electric cylinder (2) and a push block (3), wherein the linkage electric cylinder (2) is fixed to one side of the mounting block (1), and the push block (3) is fixedly connected to the output end of the linkage electric cylinder (2), characterized in that: The upper surface of the push block (3) is provided with limit docking mechanisms on both sides; The two-side limit docking mechanism comprises two hinge shafts (4) fixed on the upper surface of the push block (3), the outer wall of each hinge shaft (4) is rotatably connected to a sleeve rod (5), the inner wall of the sleeve rod (5) is rotatably connected to a linkage shaft (6) at a position away from the hinge shaft (4), and a connection block (7) is fixedly installed on the top of the linkage shaft (6); A slider (8) is fixedly connected to one side of the connection block (7), a slide frame (9) is fixedly connected to the upper surface of the slider (8), and a distance sensor (10) is provided above the connection block (7), the distance sensor (10) and the slide frame (9) are fixedly connected, a sensing block (11) is installed on one side of the distance sensor (10), and the sensing block (11) is fixedly connected to another slide frame (9); A vertical adjustment limit connection mechanism is installed inside the sliding frame (9).

2. The node connection device for a multi-storey assembled steel structure modular house according to claim 1 is characterized in that: The two hinge shafts (4) are symmetrically arranged about the middle of the push block (3), and the cross-sectional shapes of the linkage shaft (6) and the hinge shaft (4) are both circular.

3. The node connection device for a multi-story assembled steel structure modular house according to claim 1 is characterized in that: The upper surface of the distance sensor (10) and the upper surface of the sensing block (11) are located at the same horizontal plane, and the vertical cross-section of the sensing block (11) is rectangular.

4. The node connection device for a multi-storey assembled steel structure modular house according to claim 1 is characterized in that: A storage battery (12) is fixedly mounted on the outer wall of the mounting block (1) and located on one side adjacent to the linkage electric cylinder (2); and a wireless controller (13) is fixedly mounted on the outer wall of the mounting block (1) and located on the other side adjacent to the linkage electric cylinder (2); The storage battery (12) is used to supply power to the wireless controller (13).

5. The node connection device for a multi-story assembled steel structure modular house according to claim 1 is characterized in that: A plurality of steel structure house layers (14) are provided on the other side of the installation block (1), and a foundation (15) is fixedly connected to the bottom end of one of the steel structure house layers (14); The outer wall of the sliding block (8) is slidably connected to a guide frame (16), and the guide frame (16) is fixedly mounted on the mounting block (1).

6. The node connection device for a multi-story assembled steel structure modular house according to claim 1 is characterized in that: The vertical adjustment limit connection mechanism comprises a linkage screw (17) rotatably mounted inside the slide frame (9); The outer wall of the linkage screw (17) is threadedly connected to two sleeve blocks (19), and a reduction motor (18) is fixedly installed on the top of the slide frame (9), and the reduction motor (18) is used to drive the linkage screw (17) to rotate. A positioning frame (20) is welded to one side of each sleeve block (19), and a node docking groove (21) is opened on one side of each positioning frame (20). A positioning groove block (22) is provided on one side of the node docking groove (21), and the positioning groove block (22) and the positioning frame (20) are integrally formed by die casting; Rear limiting components are installed inside the two positioning frames (20).

7. The node connection device for a multi-story assembled steel structure modular house according to claim 6 is characterized in that: The two sleeve blocks (19) are both slidably connected to the slide frame (9), and the two threads on the outer wall of the linkage screw rod (17) are opposite and symmetrically arranged.

8. The node connection device for a multi-story assembled steel structure modular house according to claim 6 is characterized in that: The rear limiting assembly comprises a pushing electric cylinder (23) fixedly arranged inside the positioning frame (20); A rotating motor (24) is fixedly mounted on the output end of the pushing electric cylinder (23), and a rotating rod (26) is fixedly connected to the output end of the rotating motor (24); a bearing sleeve (25) is rotatably connected to the outer wall of the rotating rod (26), and the bearing sleeve (25) is fixedly mounted on the positioning frame (20); One end of the rotating rod (26) is fixedly connected to a rotating plate (27), one end of the rotating plate (27) is welded to a limiting side slot plate (28), one end of the limiting side slot plate (28) is fixedly connected to a limiting block (29), and one side of the limiting side slot plate (28) is provided with a node side slot (30).

9. The node connection device for a multi-story assembled steel structure modular house according to claim 8 is characterized in that: The rotating motor (24) is used to drive the rotating rod (26) to rotate, and the outer wall of the rotating rod (26) and the inner wall of the bearing sleeve (25) are both smooth surfaces.

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