Steel Straight Thread Connecting Device and Connecting Method for Prefabricated Components of Factory Buildings

Abstract

The present application relates to the technical field of steel bar connection, and discloses a straight thread connection device and a connection method for a prefabricated steel bar of a factory building assembly type. The straight thread connection device for a prefabricated steel bar of a factory building assembly type includes: a support rod and a connection assembly, wherein the connection assembly has two groups respectively arranged at both ends of the support rod, and the two groups of the connection assemblies respectively connect the steel bars in the two components; each group of the connection assembly includes an adjustment ring, which is threadedly sleeved on the support rod; a connection cover, which is slidably sleeved on the support rod along the axial direction of the support rod, can be sleeved over the adjustment ring and threadedly sleeved on the outer wall of the steel bar to clamp the adjustment ring between the connection cover and the steel bar; and a locking seat, which is threadedly sleeved on the support rod, and is opposite to the end of the connection cover away from the adjustment ring; wherein the end of the steel bar is coaxially provided with a receiving cavity for the support rod to extend into. The present application can improve the convenience of steel bar connection.

Description

Technical Field

[0001] The present application relates to the technical field of steel bar connection, and in particular to a straight thread connection device and connection method for steel bars of prefabricated components of factory buildings. Background Art

[0002] Currently, when prefabricated components of a factory building are assembled, the steel bars between two opposite prefabricated components are usually arranged oppositely. In order to improve the connection strength between the steel bars, a connection device is used in cooperation between the two opposite steel bars.

[0003] Referring to the Chinese patent document with the publication number CN111206723A, a steel bar connection structure and connection method for prefabricated components of an assembled building are disclosed. The connection structure includes a square sleeve, and straight thread sleeves and rectangular head bolts are provided at both ends of the square sleeve away from each other. When the steel bar is connected to the connection structure, the rectangular head bolt is relatively positioned with the square sleeve through grouting, and the straight thread sleeve is simultaneously thread-connected to the end of the steel bar and the screw rod of the rectangular head bolt.

[0004] Among them, the straight thread sleeve is first entirely thread-sleeved on the rectangular head bolt, and then the end close to the steel bar is thread-moved from the rectangular head bolt to the steel bar. However, when the straight thread sleeve is about to be sleeved onto the steel bar, the situation that the threads of the straight thread sleeve are deviated and misaligned with the threads of the steel bar is likely to occur, making it impossible for the straight thread sleeve to smoothly screw into the steel bar and increasing the construction difficulty. Summary of the Invention

[0005] In order to improve the convenience of steel bar connection, the present application provides a straight thread connection device and connection method for steel bars of prefabricated components of factory buildings.

[0006] In a first aspect, the present application provides a straight thread connection device for steel bars of prefabricated components of factory buildings, adopting the following technical solution:

[0007] The straight thread connection device for steel bars of prefabricated components of factory buildings includes: a support rod and a connection assembly. There are two groups of the connection assembly respectively arranged at both ends of the support rod, and the two groups of the connection assembly are respectively connected to the steel bars in two components; each group of the connection assembly includes

[0008] An adjusting ring, thread-sleeved on the support rod;

[0009] A connection cover, axially slidably sleeved on the support rod along the support rod, capable of sleeving over the adjusting ring and thread-sleeving on the outer wall of the steel bar to clamp the adjusting ring between the connection cover and the steel bar; and

[0010] A locking seat, thread-sleeved on the support rod, opposite to the end of the connection cover away from the adjusting ring;

[0011] Among them, a receiving cavity for the support rod to extend into is coaxially provided at the end of the steel bar.

[0012] By adopting the above technical solution, the adjusting ring, the connecting cover and the locking seat are sequentially arranged on the support rod so as to be quickly disassembled, assembled and replaced on the support rod, facilitating the assembly of the connecting component and the matching of model sizes. At the same time, the connecting device is threadedly connected to the steel bar through the connecting cover, and the connecting cover slides on the support rod, so that the threaded connection between the connecting cover and the steel bar is not restricted by the thread on the support rod, improving the convenience of connecting the connecting device to the steel bar.

[0013] Optionally, a rotation prevention seat is arranged in the receiving cavity of the steel bar of one of the components. The cross section of the rotation prevention seat is polygonal, and the end of the support rod has a rotation prevention groove for sleeving the rotation prevention seat.

[0014] By adopting the above technical solution, the cooperation between the rotation prevention seat and the rotation prevention groove restricts the relative rotation of the support rod with respect to the steel bar, improving the stability of the support rod.

[0015] Optionally, the inner diameter of the steel bar at the receiving cavity is larger than the outer diameter of the support rod and smaller than the outer diameter of the adjusting ring, and the outer diameter of the adjusting ring is smaller than the outer diameter of the steel bar;

[0016] The connecting cover includes a connecting sleeve and a movable ring. The connecting sleeve forms a threaded cavity that penetrates through opposite ends of itself and is used for coaxially threadedly sleeving the steel bar; the movable ring moves radially along the connecting sleeve at one end of the connecting sleeve, and at the same time, the movable ring is coaxially sleeved on the outer wall of the support rod; the outer peripheral dimension of the locking seat is larger than the inner peripheral dimension of the connecting sleeve.

[0017] By adopting the above technical solution, the inner diameter of the receiving cavity is larger than the outer diameter of the support rod, enabling the support rod to adapt to the radial deviation between steel bars, further improving the convenience of connecting the connecting device to the steel bars.

[0018] Optionally, a deformation ring and an abutting ring are provided between the locking seat and the movable ring. The deformation ring and the abutting ring are sequentially distributed along the movable ring towards the locking seat. The outer diameters of the deformation ring and the abutting ring are both the same as the inner diameter of the connecting sleeve, and the deformation ring is made of a deformable material;

[0019] The surface of the movable ring facing the locking seat has a plurality of grooves. When the locking seat abuts against the end of the connecting sleeve, the locking seat and the movable ring jointly clamp the deformation ring and the abutting ring, and the deformation ring is subjected to pressure to cause partial structure deformation and embed into the grooves.

[0020] By adopting the above technical solution, the deformable ring is deformed when under pressure and embedded in the groove, so that the deformable ring positions the movable ring. At the same time, the deformable ring and the abutment ring are relatively positioned with the connecting sleeve by embedding in the connecting sleeve, so that the movable ring and the connecting sleeve are relatively positioned.

[0021] Optionally, the movable ring has an extrusion sheet at one end close to the locking seat, the extrusion sheet coaxially abuts against the outer wall of the support rod and is arranged in plurality along the circumferential direction of the movable ring; each of the extrusion sheets includes an extrusion section and a guide section arranged in sequence along a direction away from the movable ring, the extrusion sections have uniform thickness, and the end of the extrusion section away from the movable ring protrudes beyond the end of the connecting sleeve close to the locking seat; the guide section is connected to the extrusion section, and the thickness of the guide section gradually decreases in the direction away from the extrusion section; when the locking seat abuts against the end of the connecting sleeve, it can squeeze the extrusion sheet, so that the extrusion sheet is deformed and holds the support rod tightly.

[0022] By adopting the above technical solution, the movement of the locking seat drives the extrusion sheet to hold the support rod tightly, so as to achieve relative fixation between the movable ring and the support rod, thereby improving the stability between the connecting sleeve and the support rod.

[0023] Optionally, the locking seat is provided with a coaxially arranged extrusion groove and a thread groove in sequence along the axial direction of the support rod, the notch size of the extrusion groove is larger than the notch size of the thread groove, and the locking seat is threadedly sleeved on the support rod through the thread groove; and the diameter of the extrusion groove is larger than the minimum outer diameter of the guide section and smaller than the outer diameter of the extrusion section;

[0024] When the locking seat moves toward the connecting sleeve, the extrusion sheet is guided by the guide section into the extrusion groove, so that the extrusion section is squeezed by the locking seat and deformed.

[0025] By adopting the above technical solution, the extrusion groove of the locking seat extrude the extrusion sheet under the guidance of the guide section, so that the extrusion sheet is deformed and holds the support rod tightly.

[0026] Optionally, the locking seat comprises a main body, a pushing column and a driving ring; the main body comprises a first section and a second section sequentially arranged along a direction close to the connecting sleeve, the first section is threadedly sleeved on an outer wall of the support rod, and the second section encloses the support rod and the extrusion sheet through an enclosed cavity;

[0027] The pushing columns are multiple and are circumferentially spaced in the second section and axially slide through the second section; the driving ring is threadedly sleeved on the second section and is coaxial with the support rod, the driving ring has an inclined surface abutting against the end of the pushing column away from the support rod, and the inclined surface is inclined radially of the second section; when the driving ring threadedly moves on the second section, the pushing column can be pushed by the inclined surface to squeeze the squeezing section towards the support rod, so that the squeezing section is deformed to tightly hold the support rod.

[0028] By adopting the above technical solution, the main body of the locking seat is first threadedly moved to the position abutting against the connecting sleeve, so that the squeezing piece enters the enclosing cavity, and then the driving ring is threadedly moved to drive the pushing column to squeeze the squeezing piece, so as to realize the squeezing of the squeezing piece. This way of first making the squeezing piece enter the locking seat and then squeezing can make the locking seat first abut tightly against the connecting sleeve, and it is not easy to have the situation that the connection between the locking seat and the connecting sleeve is loose.

[0029] Optionally, the thread helix direction of the second section for the driving ring to threadedly move is the same as that of the support rod, and when the driving ring moves relative to the second section towards the direction close to the connecting sleeve, the inclined surface is driven to push the pushing column to move towards the direction close to the support rod.

[0030] By adopting the above technical solution, when the driving ring moves towards the direction close to the movable ring, a tendency for the main body to move towards the direction of squeezing the connecting sleeve is given at the same time, so as to assist the main body to further abut tightly against the connecting sleeve.

[0031] In a second aspect, the present application provides a method for directly threading the steel bars of factory building prefabricated components, and adopts the following technical solution:

[0032] The method for directly threading the steel bars of factory building prefabricated components includes the following steps:

[0033] Step 1: First hoist the first component in place, and then connect the connecting component at one end of the support rod to the end of the steel bar of the first component. Specifically, first insert the support rod into the accommodating cavity, then threadedly move the adjusting ring to abut against the end of the steel bar, and then threadedly sleeve the connecting cover onto the steel bar, so that the adjusting ring abuts between the steel bar and the connecting cover, and then threadedly move the locking seat to abut against the connecting cover;

[0034] Step 2: Hoist the second component in place, extend the other end of the support rod into the accommodating cavity of the second component, and then connect the connecting component at the other end of the support rod to the steel bar of the second component.

[0035] Optionally, in step two, before hoisting the second component, the adjusting rings in the connection assemblies at the other ends of the support rods are threadedly moved to the same horizontal position. When hoisting the second component, the reinforcing bar ends of the second component abut against the adjusting rings, so that after the second component is hoisted, there is a reserved gap between the first component and the second component;

[0036] It further includes step three: injecting waterproof sealant into the reserved gap.

[0037] By adopting the above technical solution, by threadedly moving the adjusting rings to the same horizontal position, the lowering position of the second component can be guided, a reserved gap is left between the first component and the second component, and the hoisting efficiency of the second component in place can be improved.

[0038] In summary, the present application includes at least one of the following beneficial effects:

[0039] 1. The connection between the connecting cover and the reinforcing bar is made more flexible and convenient through the sliding of the connecting cover and the support rod. Moreover, through the flexible cooperation of the support rod, the adjusting ring, the connecting cover and the locking seat, the convenience of replacing the components in the connecting device can be improved to adapt to reinforcing bars of different sizes;

[0040] 2. By providing the gear in the accommodating cavity and the relative sliding of the movable ring and the connecting sleeve, the support rod can adapt to the radial deviation between two adjacent reinforcing bars, improving the adaptability of the connecting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic structural diagram of Embodiment 1 of the present application;

[0042] Figure 2 is Figure 1 a sectional view taken along line A-A in

[0043] Figure 3 is Figure 2 an enlarged schematic structural diagram at B in

[0044] Figure 4 is a schematic exploded structural diagram of the connecting assembly in the embodiment of the present application;

[0045] Figure 5 is a sectional view taken along the section after the connecting assembly in the embodiment of the present application is exploded;

[0046] Figure 6 is a schematic structural diagram of Embodiment 2 of the present application;

[0047] Figure 7 is Figure 6 an enlarged schematic structural diagram at C in

[0048] Description of reference numerals: 1. Support rod; 2. Connection assembly; 3. Adjusting ring; 4. Connection cover; 41. Connection sleeve; 42. Movable ring; 5. Locking seat; 51. Main body; 511. First section; 512. Second section; 52. Pushing column; 53. Driving ring; 6. Accommodating cavity; 7. Anti-rotation seat; 8. Anti-rotation groove; 9. Thread cavity; 10. Deformation ring; 11. Abutting ring; 12. Groove; 13. Extrusion piece; 131. Extrusion section; 132. Guide section; 14. Extrusion groove; 15. Thread groove; 16. Enclosing cavity; 17. Inclined cutting surface; 18. Movable cavity; 19. Protrusion; 20. Threaded surface; 21. Steel bar. Detailed implementation manners

[0049] The following further describes the present application in detail in conjunction with the attached Figure 1 to the attached Figure 7 drawings.

[0050] Embodiment 1:

[0051] The embodiment of the present application discloses a straight thread connection device for steel bars of prefabricated components of a factory building. Referring to Figure 1 and Figure 2 , the straight thread connection device for steel bars of prefabricated components of a factory building includes a support rod 1 and a connection assembly 2. The support rod 1 is in the shape of a screw rod. Each support rod 1 corresponds to two groups of connection assemblies 2. The two groups of connection assemblies 2 are respectively installed at both ends of the support rod for connecting the steel bars 21 on two prefabricated components respectively. The heads of the steel bars 21 all have threads, and an accommodating cavity 6 for the support rod 1 to extend into is formed on the end face of the steel bar 21.

[0052] Referring to Figure 3 and Figure 4 , specifically, each group of connection assemblies 2 includes an adjusting ring 3, a connection cover 4 and a locking seat 5. The adjusting ring 3 is in the shape of a circular ring and is coaxially threadedly sleeved on the outer wall of the support rod 1, and the outer diameter of the adjusting ring 3 is smaller than the outer diameter of the steel bar 21. The connection cover 4 is in the shape of a circular cover body. The connection cover 4 is slidably sleeved on the support rod 1. The axis of the connection cover 4 is parallel to the axis of the support rod 1, and the connection cover 4 has a thread cavity 9 facing the end of the support rod 1 for threadedly sleeving the end of the steel bar 21. The locking seat 5 is threadedly sleeved on the support rod 1, and the locking seat 5 is opposite to the side of the connection cover 4 away from the adjusting ring 3. In this embodiment, the locking seat 5 is in the shape of a circular ring. In other embodiments, the locking seat 5 can also be in the shape of a hexagonal head nut.

[0053] When the connection assembly 2 is connected to the steel bar 21, the end of the support rod 1 extends into the accommodating cavity 6, and the adjusting ring 3 is threadedly moved to abut against the end of the steel bar 21, and then the locking seat 5 is threadedly moved to abut against the connection cover 4.

[0054] Referring to Figure 2, Further, in the two prefabricated components, a rotation stop seat 7 is fixed on the inner end wall of the accommodating cavity 6 of the steel bar 21 in the prefabricated component installed first. The rotation stop seat 7 is polygonal, and the center line of the rotation stop seat 7 coincides with the axis of the steel bar 21. At both ends of the support rod 1 away from each other, rotation stop grooves 8 for sleeving the rotation stop seat 7 are provided. In this embodiment, the rotation stop seat 7 is square-shaped. When the support rod 1 extends into the accommodating cavity 6 along the axial direction of the steel bar 21, it can be sleeved on the rotation stop seat 7 to limit the relative rotation of the support rod 1 with respect to the steel bar 21, so as to improve the convenience when moving and adjusting the adjusting ring 3, the connecting cover 4 and the locking seat 5.

[0055] Refer to Figure 2 and Figure 3 , Further, in order to enable the connecting device to adapt to the radial offset misalignment of the rotation stop seat 7 relative to the steel bar 21 and to adapt to the radial offset misalignment of the two prefabricated components relative to the steel bar 21, the inner diameter of the steel bar 21 at the accommodating cavity 6 is larger than the outer diameter of the support rod 1, so that when the accommodating cavity 6 encloses the support rod 1, it can adapt to the radial offset of the rotation stop seat 7 and the steel bar 21. At the same time, the outer diameter of the adjusting ring 3 is larger than the inner diameter of the accommodating cavity 6 and smaller than the outer diameter of the steel bar 21 to limit the adjusting ring 3 from entering the accommodating cavity 6.

[0056] Refer to Figure 3 and Figure 5 , Moreover, the connecting cover 4 includes a connecting sleeve 41 and a movable ring 42. The connecting sleeve 41 is in the shape of a hollow cylinder with both ends communicating. The inner cavity of the connecting sleeve 41 is the threaded cavity 9 for threadedly sleeving the steel bar 21. The movable ring 42 is in the shape of a circular ring. The movable ring 42 is coaxially sleeved on the support rod 1. An annular movable cavity 18 is provided on the inner wall of the connecting sleeve 41 at one end away from the end of the support rod 1. The movable cavity 18 is used for the movable ring 42 to move radially relative to the connecting sleeve 41, and the outer diameter of the movable ring 42 is simultaneously smaller than the maximum diameter of the movable cavity 18 and larger than the inner diameter of the connecting sleeve 41 to limit the movable ring 42 from detaching from the connecting sleeve 41. Adaptively, in order to put the movable ring 42 into the connecting sleeve 41, the connecting sleeve 41 is formed by assembling and welding. The movable ring 42 can adapt to the axis deviation between the support rod 1 and the steel bar 21 through the radial movement relative to the connecting sleeve 41, so that when the axes of the support rod 1 and the steel bar 21 are relatively offset, the connecting sleeve 41 can still be threadedly sleeved on the steel bar 21.

[0057] Refer to Figure 3 and Figure 4, Further, between the locking seat 5 and the movable ring 42, there are a deformation ring 10 and an abutting ring 11 that are annular and enclose the support rod 1. The inner diameter of the deformation ring 10 is the same as that of the abutting ring 11 and is larger than the outer diameter of the support rod 1. The outer diameter of the deformation ring 10, the outer diameter of the abutting ring 11, and the inner diameter of the connecting sleeve 41 are all the same. The deformation ring 10 and the abutting ring 11 are arranged in sequence along the direction close to the locking seat 5. The deformation ring 10 is made of a material that can undergo elastic deformation, and the abutting ring 11 is made of a hard material. In this embodiment, the deformation ring 10 is made of rubber material, and the abutting ring 11 is made of steel. The combined thickness of the abutting ring 11 and the deformation ring 10 is greater than the straight-line distance from the side of the movable ring 42 close to the locking seat 5 to the side of the connecting sleeve 41 close to the locking seat 5.

[0058] Refer to Figure 4 and Figure 5 , On the side of the movable ring 42 facing the locking seat 5, a plurality of grooves 12 are arrayed and opened. The grooves 12 are arc-shaped. On the side of the abutting ring 11 facing away from the locking seat 5, a plurality of arc-shaped protrusions 19 are arrayed and fixed. After the connecting sleeve 41 is threadedly sleeved on the steel bar 21, first, the deformation ring 10 and the abutting ring 11 are snapped into the cavity jointly enclosed by the side of the movable ring 42 close to the locking seat 5 and the periphery of the connecting sleeve 41. The side of the abutting ring 11 close to the locking seat 5 extends beyond the side of the connecting sleeve 41 close to the locking seat 5. Then, the locking seat 5 is threadedly moved in the direction close to the connecting sleeve 41 until the locking seat 5 abuts against the side of the connecting sleeve 41 close to the locking seat 5. During the threaded movement of the locking seat 5, the abutting ring 11 is pushed towards the movable ring 42. The abutting ring 11 presses the deformation ring 10 to cause elastic deformation, so that a part of the deformation ring 10 is pressed into the grooves 12, thereby positioning the movable ring 42 relative to the abutting ring 11, that is, restricting the movement of the movable ring 42 relative to the connecting sleeve 41. At the same time, the locking seat 5 further positions the connecting sleeve 41 through the friction force generated by the abutment between the locking seat 5 and the end face of the connecting sleeve 41.

[0059] Refer to Figure 3 and Figure 4 , In addition, along the circumferential direction of its own circumference, a plurality of pressing pieces 13 are evenly spaced and fixed on the inner periphery of the end of the movable ring 42 close to the locking seat 5. The pressing pieces 13 are in the shape of an arc coaxial with the movable ring 42, so that the inner periphery of the pressing pieces 13 abuts against the outer wall of the support rod 1, and the pressing pieces 13 are made of a material that can deform under pressure, such as aluminum alloy, copper alloy, polyamide, polyoxymethylene, etc.

[0060] Each extrusion sheet 13 includes an extrusion section 131 and a guide section 132 which are sequentially connected along the axial direction of the support rod 1, and the extrusion section 131 is closer to the movable ring 42 than the guide section 132. The inner diameters of the extrusion section 131 and the guide section 132 are consistent, and the outer diameters of the extrusion section 131 along the axial direction of the support rod 1 are consistent, that is, the extrusion section 131 has a uniform thickness, and the outer diameter of the guide section 132 gradually decreases along the axial direction of the support rod 1 away from the movable ring 42, that is, the thickness of the guide section 132 gradually decreases away from the movable ring 42, and the outer diameter of the end of the guide section 132 close to the extrusion section 131 is consistent with the outer diameter of the extrusion section 131, and the outer diameter of the end of the guide section 132 away from the extrusion section 131 is consistent with the outer diameter of the support rod 1.

[0061] One end of the extrusion section 131 close to the locking seat 5 axially extends beyond the other end of the connecting sleeve 41 close to the locking seat 5 along the support rod 1. When the locking seat 5 is threadedly moved to abut against the connecting sleeve 41, the locking seat 5 can squeeze the extrusion section 131, causing the extrusion section 131 to deform and hold the support rod 1 tightly, thereby positioning the support rod 1 relative to the movable ring 42, thereby improving the stability between the connecting cover 4 and the support rod 1.

[0062] Reference Figure 4 and Figure 5 Specifically, in this embodiment, the locking seat 5 has an extrusion groove 14 and a thread groove 15 which are sequentially opened along the axial direction of the support rod 1 in the direction away from the movable ring 42. The extrusion groove 14 and the thread groove 15 are coaxial with the support rod 1. The locking seat 5 is threadedly sleeved on the support rod 1 through the thread groove 15. The diameter of the extrusion groove 14 is larger than the minimum outer diameter of the guide section 132 and smaller than the maximum outer diameter of the guide section 132. When the locking seat 5 moves in a threaded direction toward the connecting sleeve 41, the guide section 132 first enters the extrusion groove 14, and then the locking seat 5 gradually sleeves the extrusion section 131 through the extrusion groove 14 under the guidance of the guide section 132, and presses the extrusion section 131 to deformation to hold the support rod 1 tightly. The thread on the support rod 1 can strengthen the connection strength between the extrusion section 131 and the support rod 1. When the locking seat 5 abuts against the connecting sleeve 41, the locking seat 5 keeps pressing the extrusion sheet 13 at the same time.

[0063] The present application also discloses a method for connecting steel bars of a prefabricated component of a factory building by straight thread, comprising the following steps:

[0064] Step 1: Before assembly, a receiving cavity 6 is firstly formed at the end of the first component steel bar 21 and a rotation stop seat 7 is fixed, and a receiving cavity 6 is firstly formed at the end of the second component steel bar 21.

[0065] Step 2: During on-site installation, first hoist the first component into place, then insert one end of the support rod 1 into the steel bar 21 of the first component, so that the support rod 1 abuts against the inner end surface of the accommodating cavity 6 and sets the anti-rotation seat 7, and then connect the connecting component 2 on the support rod 1 corresponding to the steel bar 21 of the first component to the steel bar 21.

[0066] Specifically, first, the adjusting ring 3 is threadedly moved until it abuts against the end of the steel bar 21. Then, the connecting cover 4 is threadedly sleeved on the steel bar 21, so that the adjusting ring 3 is pressed tightly between the end of the steel bar 21 and the movable ring 42. Subsequently, the locking seat 5 is threadedly moved until it abuts tightly against the end of the connecting sleeve 41, so that the locking seat 5 presses the deformation ring 10 through the abutting ring 11 to deform and embed it into the groove 12. At the same time, the locking seat 5 squeezes the squeezing piece 13, causing the squeezing piece 13 to deform and hold the support rod 1 tightly.

[0067] Step 3: Threadedly move the adjusting rings 3 in the connecting assemblies 2 at the ends of the support rods 1 away from the first member to the same horizontal position;

[0068] Step 4: Hoist the second member in place, so that one end of the support rod 1 away from the first member extends into the accommodating cavity 6 of the steel bar 21 of the corresponding second member. The steel bar 21 of the second member abuts against the adjusting ring 3, forming a reserved gap between the first member and the second member. Then, install the connecting cover 4 and the locking seat 5 in place in sequence.

[0069] Step 5: Inject waterproof sealant into the reserved gap.

[0070] Embodiment 2:

[0071] The difference between the embodiment of the present application and Embodiment 1 lies in: the structure of the locking seat 5 is different.

[0072] Refer to Figure 6 and Figure 7 , specifically, in this embodiment, the locking seat 5 includes a main body 51, a pushing column 52 and a driving ring 53. The main body 51 includes a first section 511 and a second section 512 connected in sequence along the axial direction of the support rod 1. The first section 511 is farther from the movable ring 42 than the second section 512. The first section 511 is threadedly sleeved on the support rod 1. In this embodiment, the first section 511 is in the shape of a circular ring coaxial with the support rod 1. In other embodiments, the first section 511 can also be in the shape of a hexagonal nut coaxial with the support rod 1. The second section 512 is in the shape of a circular ring coaxial with the adjusting rod and is fixed to the first section 511. The inner cavity of the second section 512 is an enclosing cavity 16 for enclosing the support rod 1, and the diameter of the enclosing cavity 16 is greater than or equal to the outer diameter of the squeezing piece 13.

[0073] The pushing column 52 slides radially in the second section 512. There is a sliding hole in the second section 512 for the pushing column 52 to slide. The sliding hole communicates with the outer circumference of the second section 512 and the enclosing cavity 16, and a plurality of pushing columns 52 are arranged at equal intervals along the circumferential direction of the second section 512.

[0074] A threaded groove 15 that is recessed relative to the outer periphery of the second section 512 is coaxially provided on the outer periphery of the second section 512, so that the second section 512 forms a threaded surface 20. The driving ring 53 is coaxially threadedly sleeved on the second section 512 by matching with the threaded groove 15, and the sliding hole is also communicated with the threaded groove 15. The inner periphery of the driving ring 53 has an axially arranged inclined surface 17. The inclined surface 17 is inclined along the axial direction of the driving ring 53, and the distance between the inclined surface 17 and the threaded surface 20 of the second section 512 gradually increases in the direction close to the movable ring 42.

[0075] When the main body 51 is threadedly moved to the second section 512 abuts against the connecting sleeve 41, and the driving ring 53 is located at the end of the threaded groove 15 away from the movable ring 42, the inclined surface 17 is opposite to the sliding hole, one end of the pushing column 52 abuts against the inclined surface 17, and the inclined surface 17 restricts the pushing column 52 from detaching from the second section 512. The other end of the pushing column 52 abuts against the pressing section 131 after being guided by the guiding section 132. At this time, the driving ring 53 is threadedly moved in the direction close to the movable ring 42 to the end of the threaded groove 15 close to the movable ring 42. The driving ring 53 pushes the pushing column 52 to move in the direction close to the support rod 1 through the inclined surface 17, so that the pushing column 52 presses the pressing section 131, and the pressing section 131 is pressed and deformed to tightly hold the support rod 1.

[0076] Therefore, the way to make the locking seat 5 abut against the connecting sleeve 41 is as follows: first, adjust the driving ring 53 to the end of the threaded groove 15 away from the movable ring 42, then threadedly move the main body 51 to abut against the connecting sleeve 41, and then threadedly move the driving ring 53 to the end of the threaded groove 15 close to the movable ring 42.

[0077] It should be noted that the thread direction of the threaded surface 20 of the second section 512 is the same as the thread direction of the corresponding support rod 1, so that when the driving ring 53 is threadedly moved in the direction close to the movable ring 42, there is a tendency to drive the main body 51 to threadedly move in the direction close to the movable ring 42, so as to further assist the main body 51 to tightly abut against the connecting sleeve 41.

[0078] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A straight thread connection device for prefabricated steel bars of a factory building, characterized in that: include: A support rod (1) and a connection assembly (2), wherein the connection assembly (2) comprises two groups respectively arranged at two ends of the support rod (1), and the two groups of the connection assembly (2) respectively connect the steel bars (21) in the two components; each group of the connection assembly (2) comprises An adjusting ring (3) threadedly sleeved on the support rod (1); a connecting cover (4) which is slidably sleeved on the supporting rod (1) along the axial direction of the supporting rod (1), and can be sleeved over the adjusting ring (3) and threadedly sleeved on the outer wall of the reinforcing bar (21) so as to clamp the adjusting ring (3) between the connecting cover (4) and the reinforcing bar (21); and A locking seat (5) is threadedly sleeved on the support rod (1) and is located at an end of the connecting cover (4) away from the adjusting ring (3); Wherein, a receiving cavity (6) for the support rod (1) to extend into is coaxially formed at the end of the steel bar (21); The inner diameter of the steel bar (21) at the accommodating cavity (6) is larger than the outer diameter of the support rod (1) and smaller than the outer diameter of the adjustment ring (3), and the outer diameter of the adjustment ring (3) is smaller than the outer diameter of the steel bar (21); The connecting cover (4) comprises a connecting sleeve (41) and a movable ring (42); the connecting sleeve (41) forms a threaded cavity (9) which passes through two opposite ends of the connecting sleeve and is used for coaxially threading the reinforcing bar (21); the movable ring (42) moves radially along the connecting sleeve (41) at one end of the connecting sleeve (41), and the movable ring (42) is coaxially sleeved on the outer wall of the supporting rod (1); the outer circumference of the locking seat (5) is larger than the inner circumference of the connecting sleeve (41); A deformable ring (10) and an abutment ring (11) are provided between the locking seat (5) and the movable ring (42); the deformable ring (10) and the abutment ring (11) are sequentially distributed along the movable ring (42) in a direction toward the locking seat (5); the outer diameters of the deformable ring (10) and the abutment ring (11) are consistent with the inner diameter of the connecting sleeve (41), and the deformable ring (10) is made of a deformable material; The movable ring (42) has a plurality of grooves (12) on one side facing the locking seat (5); when the locking seat (5) abuts against the end of the connecting sleeve (41), the locking seat (5) and the movable ring (42) jointly clamp the deformable ring (10) and the abutting ring (11), and the deformable ring (10) is subjected to pressure so that a part of its structure is deformed and embedded in the grooves (12).

2. The straight thread connection device for prefabricated steel bars of factory buildings according to claim 1 is characterized in that: The steel bar (21) of one of the components is provided with a rotation stop seat (7) in the accommodating cavity (6); the rotation stop seat (7) has a polygonal cross section; and the end of the support rod (1) has a rotation stop groove (8) for sleeve-mounting the rotation stop seat (7).

3. The straight thread connection device for prefabricated steel bars of factory buildings according to claim 1 is characterized in that: The movable ring (42) has an extrusion sheet (13) at one end close to the locking seat (5), the extrusion sheet (13) coaxially abutting against the outer wall of the support rod (1) and being arranged in plurality along the circumferential direction of the movable ring (42); each of the extrusion sheets (13) comprises an extrusion section (131) and a guide section (132) arranged in sequence in a direction away from the movable ring (42); the extrusion section (131) has a uniform thickness, and the end of the extrusion section (131) away from the movable ring (42) protrudes beyond the end of the connecting sleeve (41) close to the locking seat (5); the guide section (132) is continuous with the extrusion section (131), and the thickness of the guide section (132) gradually decreases in a direction away from the extrusion section (131); when the locking seat (5) abuts against the end of the connecting sleeve (41), the extrusion sheet (13) can be squeezed to cause the extrusion sheet (13) to deform and hold the support rod (1).

4. The straight thread connection device for prefabricated steel bars of factory buildings according to claim 3 is characterized in that: The locking seat (5) is provided with a coaxially arranged extrusion groove (14) and a thread groove (15) in sequence along the axial direction of the support rod (1); the notch size of the extrusion groove (14) is larger than the notch size of the thread groove (15); the locking seat (5) is threadedly sleeved on the support rod (1) through the thread groove (15); and the diameter of the extrusion groove (14) is larger than the minimum outer diameter of the guide section (132) and smaller than the outer diameter of the extrusion section (131); When the locking seat (5) moves toward the connecting sleeve (41), the extrusion sheet (13) is guided by the guide section (132) into the extrusion groove (14), so that the extrusion section (131) is squeezed by the locking seat (5) and deformed.

5. The straight thread connection device for prefabricated steel bars of factory buildings according to claim 3 is characterized in that: The locking seat (5) comprises a main body (51), a pushing column (52) and a driving ring (53); the main body (51) comprises a first section (511) and a second section (512) which are arranged in sequence along a direction close to the connecting sleeve (41); the first section (511) is threadedly sleeved on the outer wall of the support rod (1), and the second section (512) encloses the support rod (1) and the extrusion sheet (13) through an enclosing cavity (16); The pushing column (52) has a plurality of pushing columns (52) which are distributed in the second section (512) at intervals along the circumference of the second section (512), and the pushing column (52) is radially slidably penetrated in the second section (512) along the second section (512); the driving ring (53) is threadedly sleeved on the second section (512) and is coaxial with the support rod (1); the driving ring (53) has an inclined surface (17) which abuts against an end of the pushing column (52) away from the support rod (1), and the inclined surface (17) is radially inclined along the second section (512); when the driving ring (53) moves on the thread on the second section (512), it can push the pushing column (52) through the inclined surface (17) to squeeze the squeezing section (131) in a direction close to the support rod (1), so that the squeezing section (131) is deformed and tightly holds the support rod (1).

6. The straight thread connection device for prefabricated steel bars of factory buildings according to claim 5 is characterized in that: The thread rotation direction of the second section (512) for the threaded movement of the drive ring (53) is consistent with the thread rotation direction of the support rod (1), and when the drive ring (53) moves toward the connecting sleeve (41) relative to the second section (512), the chamfered surface (17) drives the push column (52) to move toward the support rod (1).

7. A method for connecting steel bars of prefabricated components of a factory building with straight thread, applicable to the steel bars of prefabricated components of a factory building with straight thread as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: first hoist the first component into place, then connect the connecting assembly (2) at one end of the support rod (1) to the end of the steel bar (21) of the first component, specifically, first push the support rod (1) into the accommodating cavity (6), then move the adjusting ring (3) threadedly until it abuts against the end of the steel bar (21), then thread the connecting cover (4) onto the steel bar (21), so that the adjusting ring (3) abuts between the steel bar (21) and the connecting cover (4), and then thread the locking seat (5) until it abuts against the connecting cover (4); Step 2: hoist the second component into place so that the other end of the support rod (1) extends into the accommodating cavity (6) of the second component, and then connect the connecting assembly (2) at the other end of the support rod (1) to the steel bar (21) of the second component.

8. The method for connecting steel bars of prefabricated components of a factory building with straight threads according to claim 7 is characterized in that: In step 2, before hoisting the second component, the adjusting ring (3) in the connecting assembly (2) at the other end of each support rod (1) is threadedly moved to the same horizontal position. When the second component is hoisted, the end of the steel bar (21) of the second component abuts against the adjusting ring (3), so that after the second component is hoisted, a reserved gap is formed between the first component and the second component. The method also includes step three: injecting waterproof sealant into the reserved seam.

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