Detachable self-locking connection nodes between modular building units

Abstract

The present invention discloses a detachable self-locking connection node between modular building units, including a horizontal connection plate, a self-locking device arranged at the bottom of an upper module column, and a fixing member and a connecting bolt arranged at the top of a lower module column. A horizontally arranged, retractable slider is arranged in the self-locking device, a fixing plate is arranged on the fixing member, a limiting sleeve is arranged in the center of the fixing plate, the connecting bolt is connected in the limiting sleeve, and a chamfered surface and a hexagonal hole that match the inclined surface of the slider are arranged on the top. During installation, the self-locking device moves down to dock with the limiting sleeve, and the bolt cap of the connecting bolt pushes the slider to move into the slide slot until the two are separated, the slider extends out to clamp the step surface under the bolt cap of the connecting bolt, the limiting sleeve is inserted into the central limiting hole of the lock body, and the lock body is pressed on the horizontal connection plate. The present invention can realize self-locking connection and quick unlocking, does not need to reserve operating space, and is applicable to the node forms of center column, side column and corner column at the same time, and has a simple structure and is easy to install and disassemble.

Description

Technical Field

[0001] The invention relates to the field of construction engineering, in particular to a self-locking and unlockable connection node for connecting steel structure module building units. Background Art

[0002] Steel structure modular building is a highly prefabricated building that divides traditional houses into single rooms or a certain three-dimensional building space as building module units. It is prefabricated in the factory and quickly assembled into a whole building on site by connecting nodes.

[0003] Modular buildings are different from traditional building construction methods. Since the modules already have a certain beam-column system when they leave the factory, there will be multiple beams and columns at the node positions after the modules are assembled, such as the connection nodes of "two columns and four beams" for corner columns, "four columns and eight beams" for side columns, and "eight columns and sixteen beams" for middle columns. In the existing connection technology, it is generally necessary to reserve operating space for manual installation, and self-locking connection cannot be achieved. When the modular building is demolished, it is impossible to quickly disassemble the nodes. Therefore, proposing a simple structure that can achieve self-locking connection and quick unlocking, without reserving operating space, and applicable to the middle column, side column and corner column node form is the key to solving the node connection problem between modular steel structure modules. Summary of the invention

[0004] In order to solve the technical problems existing in the known technology, the present invention provides a detachable self-locking connection node between modular building units. The node can realize self-locking connection and quick unlocking, does not require reserved operation space, is applicable to the node forms of center columns, side columns and corner columns, and has a simple structure and is easy to install and disassemble.

[0005] The technical solution adopted by the present invention to solve the technical problems existing in the known technology is: a detachable self-locking connection node between modular building units, including a horizontal connecting plate, the node also includes a self-locking device arranged at the bottom of the upper module column and a fixing member and a connecting bolt arranged at the top of the lower module column, the self-locking device is provided with a lock body fixedly connected to the main body of the upper module column, the lock body is provided with a central limiting hole, and a plurality of sliding grooves uniformly distributed in the circumferential direction and extending in the radial direction are provided on the side wall of the central limiting hole of the lock body, a sliding block is installed in the sliding groove, an elastic component is clamped between the sliding block and the sliding groove, the upper end of the outer side surface of the sliding block is a vertical surface, and the rest of the large part is an inclined surface; the fixing member is provided with a fixing plate fixedly connected to the main body of the lower module column, and a fixing member is provided in the center of the fixing plate A limiting sleeve, the connecting bolt is connected to the limiting sleeve, the top of the bolt cap is provided with a chamfered surface that fits the inclined surface of the slider, and the top of the connecting bolt is provided with a hexagonal hole, the lock body, the horizontal connecting plate and the fixed plate are arranged in sequence from top to bottom, and the horizontal connecting plate is sleeved on the limiting sleeve. During installation, the self-locking device moves down and docks with the limiting sleeve, and the bolt cap of the connecting bolt pushes the slider to move into the sliding groove until the two are disengaged, and the slider extends out to clamp the step surface under the bolt cap of the connecting bolt, the limiting sleeve is inserted into the central limiting hole of the lock body, the lock body is pressed on the horizontal connecting plate and connected to the limiting sleeve, and the horizontal connecting plate is clamped between the lock body and the fixed plate.

[0006] On the basis of the above scheme, the present invention also makes the following improvements:

[0007] The outer surface of the limiting sleeve is a prismatic surface, and the shapes of the positioning hole of the horizontal connecting plate and the central limiting hole of the lock body are adapted to the shape of the outer surface of the limiting sleeve.

[0008] The elastic component is two springs arranged side by side on the left and right sides.

[0009] The advantages and positive effects of the present invention are: the self-locking connection of the module assembly can be achieved by simply lowering the upper module onto the lower module through a lifting device, and the construction is simple and fast; quick unlocking can be achieved; no operating space needs to be reserved; it is suitable for the nodes of the middle column, side column and corner column, and has a wide range of applications; the structure is simple; the force is reasonable, and the node connection requirements between modular steel structure modules are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention in a decomposed state;

[0011] Figure 2 It is a schematic diagram of the structure of the fixing member of the present invention;

[0012] Figure 3This is a schematic diagram of a horizontal connecting plate when the present invention is used at a corner node position;

[0013] Figure 4 It is a schematic diagram of the connecting bolt of the present invention;

[0014] Figure 5 It is a schematic diagram of the structure of the self-locking device of the present invention;

[0015] Figure 6 It is a schematic diagram of a slider and a compression spring of the present invention;

[0016] Figure 7 A schematic diagram of a bolt stopper for installation of the present invention;

[0017] Figure 8 A schematic diagram of the unlocking lever for dismantling of the present invention;

[0018] Fig. 9 This is a schematic diagram of the bolt stopper in use during installation of the present invention;

[0019] Fig.10 It is a cross-sectional schematic diagram of the self-locking connection completion state of the present invention;

[0020] Fig.11 This is a schematic diagram of the present invention being used at a corner node position;

[0021] Fig.12 This is a schematic diagram of the use of the present invention at the edge node position;

[0022] Fig.13 This is a schematic diagram of the present invention used at the middle node position.

[0023] In the figure: 1-fixing part; 2-horizontal connecting plate; 3-connecting bolt; 4-self-locking device; 5-slider; 6-compression spring; 7-upper module column body; 8-lower module column body; 9-fixing plate; 10-limiting sleeve; 11-internal thread; 12-positioning hole; 13-hexagonal hole; 14-bottom surface of nut; 15-chamfered surface; 16-center limiting hole; 17-slide groove; 18-top surface; 19-inclined surface; 20-bolt limiter; 21-operating part; 22-upper limit surface; 23-chamfered; 24-lower limit surface; 25-unlocking rod; 26-magnetic end; 27-thread; 28-lock body. DETAILED DESCRIPTION

[0024] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0025] See also Figures 1 to 13A detachable self-locking connection node between modular building units includes a horizontal connecting plate 2, a self-locking device 4 arranged at the bottom of an upper module column, and a fixing member 1 and a connecting bolt 3 arranged at the top of a lower module column.

[0026] See also Figure 5 , 6 and 10, the self-locking device 4 is provided with a lock body 28 fixedly connected to the upper module column body 7, the lock body 28 is provided with a central limiting hole 16, and a plurality of slide grooves 17 uniformly distributed in the circumferential direction and extending in the radial direction are provided on the side wall of the central limiting hole of the lock body 28, a slider 5 is mounted in the slide groove 17, an elastic component is clamped between the slider 5 and the slide groove 17, the upper end of the outer side surface of the slider 5 is a vertical surface, and the rest of the majority is an inclined surface 19.

[0027] In this embodiment, the elastic component is two compression springs 6 arranged side by side on the left and right, which have good stability.

[0028] The fixing member 1 is provided with a fixing plate 9 fixedly connected to the lower module column body 8, a limiting sleeve 10 is provided in the center of the fixing plate 9, the connecting bolt 3 is connected in the limiting sleeve 10, a chamfered surface 15 matching the inclined surface 19 of the slider 5 is provided on the top of the bolt cap, and a hexagonal hole 13 is provided on the top of the connecting bolt 3.

[0029] The lock body 28, the horizontal connecting plate 2 and the fixed plate 9 are arranged in sequence from top to bottom, and the horizontal connecting plate 2 is sleeved on the limiting sleeve 10. During installation, the self-locking device 4 moves down and docks with the limiting sleeve 10, and the bolt cap of the connecting bolt 3 pushes the slider 5 to move into the sliding groove 17 until the two are disengaged, and the slider 5 moves down to under the bolt cap of the connecting bolt 3, and the slider 5 extends out to clamp the step surface under the bolt cap of the connecting bolt, the limiting sleeve 10 is inserted into the central limiting hole 16 of the lock body 28, and the lock body 28 is pressed on the horizontal connecting plate 2, and the horizontal connecting plate 2 is clamped between the lock body 28 and the fixed plate 2.

[0030] In this embodiment, the outer surface of the limiting sleeve 10 is preferably a prismatic surface, and the shapes of the positioning hole of the horizontal connecting plate 2 and the central limiting hole 16 of the lock body 28 are adapted to the outer surface shape of the limiting sleeve 10 to prevent twisting.

[0031] A more detailed description of the present invention is as follows:

[0032] The node provided by the present invention is used for connecting the columns of the upper module and the lower module, and includes a fixing member 1, a horizontal connecting plate 2, a connecting bolt 3 and a self-locking device 4, wherein the fixing member 1 is welded to the top of the column of the lower module, the horizontal connecting plate 2 is connected to the fixing member 1, the connecting bolt 3 is screwed on the fixing member 1, the self-locking device 4 is welded to the bottom of the column of the upper module, and the slider 5 and the compression spring 6 are installed in the slide groove 17 in the self-locking device 4. During installation, the bolt limiter can be used to accurately control the position of the connecting bolt 3, and during disassembly, the unlocking rod can be used to loosen the connecting bolt for quick unlocking.

[0033] like Figure 2 As shown, the fixing part 1 consists of two parts, namely a fixing plate 9 connected to the lower module column body 8 and a limiting sleeve 10 with an internal thread 11 in the middle, wherein the outer diameter of the limiting sleeve 10 is consistent with the diameter of the positioning hole 12 on the horizontal connecting plate 2 and the diameter of the central limiting hole 16 on the self-locking device 4, the limiting sleeve 10 is connected to the connecting plate 2 and the self-locking device 4, and the internal thread 11 of the limiting sleeve 10 is adapted to be connected with the thread 27 of the connecting bolt 3.

[0034] like Figure 3 As shown, the horizontal connecting plate 2 is provided with a positioning hole 12 for connecting with the limiting sleeve 10 . Figure 3 The horizontal connecting plate structure shown is the structure of the present invention when used at the corner node position, and has 1 connecting hole. When used at the edge node position, the horizontal connecting plate should have 2 positioning holes; when used at the middle node position, the horizontal connecting plate should have 4 positioning holes. The horizontal connecting plate is used for horizontal connection between units, which is the prior art and will not be repeated here.

[0035] like Figure 4 As shown, the connecting bolt 3 is provided with a hexagonal hole 13 at the top, and its diameter is consistent with the diameter of the magnetic end 26 of the unlocking rod 25. The bottom surface 14 of the bolt cap contacts the top surface 18 of the slider after self-locking is completed, and the chamfered surface 15 on the top of the nut is adapted to the inclined surface 19 of the slider. During the self-locking process, the connecting bolt 3 pushes the slider 5 to slide. The connecting bolt 3 is threadedly connected to the limiting sleeve 10.

[0036] like Figure 5 As shown, the self-locking device 4 is provided with four slide grooves 17 in the lock body 28, and the sliders are symmetrically arranged along the symmetry axis. A compression spring 6 is provided at the rear so that the slider 5 can slide in the slide groove. A center limit hole 16 is provided on the self-locking device, and the hole diameter is adapted to the outer diameter of the limit sleeve 10. During the self-locking process, the connecting bolt 3 passes through the center limit hole 16.

[0037] like Figure 6As shown, one slider 5 is equipped with two compression springs 6, which has good stability. The slider 5 is a wedge-shaped hexahedron, in which the inclined surface 19 contacts the chamfered surface 15 at the top of the connecting bolt nut during the self-locking process. As the upper module descends, the connecting bolt 3 pushes the slider 5 to slide inside the slide groove 17 until the inclined surface 19 is separated from the chamfered surface 15, and the slider 5 extends under the action of the compression spring 6.

[0038] When installing the above nodes, you can use Figure 7 The bolt stopper 20 shown is used to control the installation gap. The bolt stopper 20 includes 4 main parts, 1) an operating part 21, which is a three-fold line design and conforms to the ergonomic design, 2) an upper limit surface 22 is an arc design, and the arc of this part is the same as that of the thread 27, 3) an upper limit surface chamfer 23 is an arc chamfer design, and 4) a lower limit surface 24 is an arc surface, which is consistent with the outer side of the limit sleeve 10 of the fixing member 1.

[0039] When unlocking the above nodes, you can use Figure 8 The unlocking lever shown, the unlocking lever 25 is divided into two parts, a rod body and an end, the unlocking lever 25 is T-shaped, the rod body can be made of steel pipe, and the end is a magnetic end 26, which is a regular hexagonal column, matching the hexagonal hole 13 at the top of the connecting bolt. After unlocking, the connecting bolt is sucked on the end and pulled up by the unlocking lever into the upper module column.

[0040] like Fig. 9 As shown, the use state of the bolt limiter includes four parts. The horizontal connecting plate 2 is connected to the fixing part 1, the connecting bolt 3 and the fixing part 1 are first tightened preliminarily, and then the bolt limiter 20 is placed on the horizontal connecting plate 2 so that the lower limit surface coincides with the limit sleeve 10, and then the connecting bolt is tightened until the lower bottom surface 14 of the connecting bolt nut contacts the upper limit surface 22 of the bolt limiter, and finally the bolt limiter 20 is removed by operating the operating part 21 of the bolt limiter.

[0041] like Fig.10 As shown, the self-locking connection completion state of the above-mentioned node includes the following parts: 1) the fixing part 1 is welded to the lower module column body 8, 2) the horizontal connecting plate 2 is connected to the limiting sleeve 10 of the fixing part 1 through the positioning hole 12, 3) the connecting bolt 3 is connected to the fixing part 1, 4) the self-locking device 4 is welded to the upper module column body 7, 5) the self-locking device 4 is pressed on the horizontal connecting plate 2 and connected to the limiting sleeve 10, 6) the slider 5 and the spring 6 are installed in the slide groove 17, and 7) the slider 5 is stuck on the step surface under the connecting bolt nut.

[0042] The self-locking working mode of the present invention is as follows: the horizontal connecting plate 2 is placed on the fixing part 1 after aligning the positioning hole 12, and the connecting bolt 3 is installed. It is first tightened, and then the connecting bolt 3 is tightened to the set position using the bolt limiter 20, and the bolt limiter 20 is removed. The upper module column and the lower module column are aligned and then fall down, and the chamfered surface 15 on the top of the connecting bolt nut first contacts the inclined surface 19 of the slider, and the slider 5 moves in the slide groove toward the inside of the self-locking device 4 until the slider is disengaged from the nut, and the top surface 18 of the slider drops below the lower bottom surface of the nut. The slider 5 slides out under the action of the compression spring 6, and at the same time, the upper module falls onto the lower module to realize the self-locking function.

[0043] The unlocking working method of the present invention is to first vertically place the unlocking rod 25 into the upper module column through the top of the upper module column until the magnetic end 26 is inserted into the hexagonal hole 13 at the top of the connecting bolt, and then turn the unlocking rod counterclockwise. After the connecting bolt leaves the fixing part 1, the magnetic end of the unlocking rod pulls it up into the upper module column to achieve unlocking.

[0044] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can make many forms without departing from the scope of protection of the present invention and the claims, all of which fall within the scope of protection of the present invention.

Claims

1. A detachable self-locking connection node between modular building units, comprising a horizontal connection plate, characterized in that: The node also includes a self-locking device arranged at the bottom of the upper module column and a fixing member and a connecting bolt arranged at the top of the lower module column. The self-locking device is provided with a lock body fixedly connected to the main body of the upper module column, the lock body is provided with a central limiting hole, a plurality of slide grooves uniformly distributed along the circumferential direction and extending along the radial direction are provided on the side wall of the central limiting hole of the lock body, a slider is installed in the slide groove, an elastic component is clamped between the slider and the slide groove, the upper end of the outer side surface of the slider is a vertical surface, and the rest of the majority is an inclined surface; The fixing member is provided with a fixing plate fixedly connected to the main body of the lower module column, a limiting sleeve is provided in the center of the fixing plate, the connecting bolt is connected in the limiting sleeve, the top of the bolt cap is provided with a chamfered surface matching the inclined surface of the slider, and a hexagonal hole is provided at the top of the connecting bolt. When the node is installed, a bolt limiter is used to control the installation gap; the bolt limiter is arranged between the horizontal connecting plate and the connecting bolt; the bolt limiter includes 4 main parts: 1) an operating part, which is a three-fold line design and conforms to ergonomic design; 2) an upper limit surface, which is an arc-shaped design, and the curvature of this part is the same as that of the threaded part; 3) an upper limit surface chamfer, which is an arc chamfer design; 4) a lower limit surface, which is an arc surface, and this part matches the outer side of the limiting sleeve of the fixing member; The lock body, the horizontal connecting plate and the fixed plate are arranged in sequence from top to bottom, and the horizontal connecting plate is sleeved on the limiting sleeve. During installation, the self-locking device moves down and docks with the limiting sleeve, and the bolt cap of the connecting bolt pushes the slider to move into the sliding groove until the two are disengaged, and the slider extends out to clamp the step surface under the bolt cap of the connecting bolt, the limiting sleeve is inserted into the central limiting hole of the lock body, the lock body is pressed on the horizontal connecting plate and connected to the limiting sleeve, and the horizontal connecting plate is clamped between the lock body and the fixed plate.

2. The detachable self-locking connection node between modular building units according to claim 1 is characterized in that: The outer surface of the limiting sleeve is a prismatic surface, and the shapes of the positioning hole of the horizontal connecting plate and the central limiting hole of the lock body are adapted to the shape of the outer surface of the limiting sleeve.

3. The detachable self-locking connection node between modular building units according to claim 1 is characterized in that: The elastic component is two springs arranged side by side on the left and right sides.

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