Straight thread connecting device and method for steel bars of fabricated prefabricated parts of factory building

Abstract

The invention relates to the technical field of steel bar connection, and discloses a plant fabricated prefabricated part steel bar straight thread connecting device and method.The plant fabricated prefabricated part steel bar straight thread connecting device comprises a supporting rod and two sets of connecting assemblies arranged at the two ends of the supporting rod correspondingly; the two groups of connecting assemblies are respectively connected with steel bars in the two members; each connecting assembly comprises an adjusting ring, and the supporting rod is sleeved with the adjusting ring in a threaded mode. The connecting cover is arranged on the supporting rod in a sliding and sleeving manner in the axial direction of the supporting rod, can be arranged on the adjusting ring in a sleeving manner and is arranged on the outer wall of the reinforcing steel bar in a threaded and sleeving manner, so that the adjusting ring is clamped between the connecting cover and the reinforcing steel bar; the locking seat is arranged on the supporting rod in a threaded and sleeving manner and is opposite to one end, deviating from the adjusting ring, of the connecting cover; the end of the steel bar is coaxially provided with a containing cavity, and the supporting rod can stretch into the containing cavity. The convenience of steel bar connection can be improved.

Description

Technical Field

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

[0002] At present, when assembling prefabricated components in a factory building, the steel bars between two relative prefabricated components are usually arranged opposite to each other, and in order to improve the connection strength between the steel bars, a connecting device is provided between the two relative steel bars.

[0003] Referring to the Chinese patent document with publication number CN111206723A, a prefabricated building component steel bar connection structure and a connection method thereof are disclosed. The connection structure includes a square sleeve, and a straight threaded sleeve and a rectangular head bolt are arranged 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 positioned relative to the square sleeve through grouting, and the straight threaded sleeve is simultaneously threadedly connected to the end of the steel bar and the screw of the rectangular head bolt.

[0004] Among them, the straight threaded sleeve is first fully threaded on the rectangular head bolt, and then the end close to the steel bar is moved from the rectangular head bolt thread to the steel bar. However, when the straight threaded sleeve is about to be sleeved on the steel bar, the thread of the straight threaded sleeve and the thread of the steel bar are easily misaligned, making it impossible for the straight threaded sleeve to be smoothly screwed into the steel bar, increasing the difficulty of construction. 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 a connection method for steel bars of factory-assembled prefabricated components.

[0006] In the first aspect, the present application provides a straight thread connection device for prefabricated steel bars of a factory building assembly, which adopts the following technical solution: A straight thread connection device for prefabricated steel bars of a factory building assembly comprises: a support rod and a connection assembly, wherein the connection assembly comprises 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 assemblies comprises An adjusting ring, threadedly sleeved on the support rod; A connecting cover is slidably sleeved on the supporting rod along the axial direction of the supporting rod, and can be sleeved over the adjusting ring and threadedly sleeved on the outer wall of the steel bar to clamp the adjusting ring between the connecting cover and the steel bar; and A locking seat, threadedly sleeved on the support rod, opposite to the end of the connecting cover away from the adjusting ring; Wherein, a receiving cavity for the support rod to extend into is coaxially opened at the end of the steel bar.

[0007] By adopting the above technical solution, the adjusting ring, the connecting cover and the locking seat are sequentially arranged on the support rod, so that they can be quickly disassembled and replaced from the support rod, so as to facilitate the assembly of the connection components and the matching of the model size. At the same time, the connecting device is connected to the steel bar thread through the connecting cover, and the connecting cover slides on the support rod, so that the connecting cover is not restricted by the thread on the support rod when being connected to the steel bar thread, so as to improve the convenience of connecting the connecting device and the steel bar.

[0008] Optionally, the steel bar of one of the components is provided with a stop seat in the accommodating cavity, the cross-section of the stop seat is polygonal, and the end of the support rod has a stop groove for sleeved with the stop seat.

[0009] By adopting the above technical solution, the anti-rotation seat and the anti-rotation groove cooperate to limit the rotation of the support rod relative to the steel bar, thereby improving the stability of the support rod.

[0010] Optionally, the inner diameter of the steel bar at the accommodating cavity is larger than the outer diameter of the support rod and smaller than the outer diameter of the adjustment ring, and the outer diameter of the adjustment ring is smaller than the outer diameter of the steel bar; The connecting cover includes a connecting sleeve and a movable ring. The connecting sleeve forms a threaded cavity that runs through its two opposite ends and is used to coaxially thread the steel bar; the movable ring moves radially along the connecting sleeve to 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 circumferential size of the locking seat is larger than the inner circumferential size of the connecting sleeve.

[0011] By adopting the above technical solution, the inner diameter of the accommodating cavity is larger than the outer diameter of the support rod, so that the support rod can adapt to the radial deviation between the steel bars, further improving the convenience of the connecting device in connecting the steel bars.

[0012] Optionally, a deformable ring and an abutment ring are provided between the locking seat and the movable ring, the deformable ring and the abutment ring are sequentially distributed along the movable ring toward the locking seat, the outer diameters of the deformable ring and the abutment ring are consistent with the inner diameter of the connecting sleeve, and the deformable ring is made of a deformable material; The movable ring has a plurality of grooves on one side facing the locking seat. When the locking seat abuts against the end of the connecting sleeve, the locking seat and the movable ring jointly clamp the deformable ring and the abutting ring, and the deformable ring is subjected to pressure so that part of the structure is deformed and embedded in the groove.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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; 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.

[0017] 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.

[0018] 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; The pushing columns have multiple ones and are distributed in the second section at intervals along the circumference of the second section, and the pushing columns are radially slidably penetrated in the second section along the second section; the driving ring is threadedly sleeved on the second section and is coaxial with the support rod, and the driving ring has an oblique cut surface that abuts against one end of the pushing column away from the support rod, and the oblique cut surface is radially inclined along the second section; when the driving ring moves on the second section, it can push the pushing column through the oblique cut surface to extrude the extrusion section toward the support rod, so that the extrusion section is deformed and holds the support rod tightly.

[0019] By adopting the above technical solution, the locking seat body first moves by thread to the position against the connecting sleeve, so that the extrusion sheet enters the enclosed cavity, and then the driving ring is driven by the thread to drive the pushing column to squeeze the extrusion sheet, so as to achieve the extrusion of the extrusion sheet. This method of firstly entering the extrusion sheet into the locking seat and then squeezing it can make the locking seat first press against the connecting sleeve, and it is not easy for the locking seat and the connecting sleeve to be loosely abutted.

[0020] Optionally, the thread rotation direction of the second section for the drive ring thread movement is consistent with the thread rotation direction of the support rod, and when the drive ring moves toward the connecting sleeve relative to the second section, the bevel surface drives the pushing column to move toward the support rod.

[0021] By adopting the above technical solution, when the driving ring moves toward the direction approaching the movable ring, the main body is given a tendency to move toward the direction of extruding the connecting sleeve, so as to assist the main body to further press against the connecting sleeve.

[0022] In the second aspect, the present application provides a method for connecting steel bars of prefabricated components of a factory building by straight thread, which adopts the following technical solution: The method for connecting steel bars of prefabricated components of a factory building with straight threads comprises the following steps: Step 1: first hoist the first component into place, and then connect the connecting assembly at one end of the support rod to the end of the steel bar of the first component. Specifically, first push the support rod into the accommodating cavity, then move the adjusting ring thread to abut against the end of the steel bar, then thread the connecting cover onto the steel bar, make the adjusting ring abut between the steel bar and the connecting cover, and then move the locking seat thread to abut against the connecting cover; Step 2: hoist the second component into place so that the other end of the support rod extends into the accommodating cavity of the second component, and then connect the connecting assembly at the other end of the support rod to the steel bar of the second component.

[0023] Optionally, in step 2, before hoisting the second component, the adjusting ring threads in the connecting assemblies at the other ends of the support rods are first moved to the same horizontal position, and when the second component is hoisted, the end of the steel bar of the second component abuts against the adjusting ring, so that after the hoisting of the second component is completed, there is a reserved gap between the first component and the second component; The method also includes step three: injecting waterproof sealant into the reserved seam.

[0024] By adopting the above technical solution, the threads of the adjustment rings are moved to the same horizontal position to guide the lowering position of the second component, so that a reserved gap is left between the first component and the second component, and the efficiency of hoisting the second component into place can be improved.

[0025] In summary, the present application includes at least one of the following beneficial effects: 1. The connection between the connection cover and the support rod is more flexible and convenient through the sliding of the connection cover and the steel bar. The flexible cooperation of the support rod, the adjustment ring, the connection cover and the locking seat can improve the convenience of replacing the parts in the connection device and adapt to steel bars of different sizes. 2. By providing the gear of 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 the two connected steel bars, thereby improving the adaptability of the connecting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of Embodiment 1 of the present application; Figure 2 yes Figure 1 Cross-section at AA in the middle; Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at B in the middle; Figure 4 is a schematic diagram of the exploded structure of the connection assembly in an embodiment of the present application; Figure 5 is a cross-sectional view of an exploded connection assembly in an embodiment of the present application; Figure 6 It is a structural diagram of Embodiment 2 of the present application; Figure 7 yes Figure 6 Schematic diagram of the enlarged structure at point C in the middle.

[0027] Explanation of the reference numerals in the accompanying drawings: 1. Support rod; 2. Connecting assembly; 3. Adjusting ring; 4. Connecting cover; 41. Connecting 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. Threaded cavity; 10. Deformation ring; 11. Abutment ring; 12. Groove; 13. Extrusion sheet; 131. Extrusion section; 132. Guide section; 14. Extrusion groove; 15. Threaded groove; 16. Enclosed cavity; 17. Beveled surface; 18. Movable cavity; 19. Protrusion; 20. Threaded surface; 21. Rebar. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 To Attachment Figure 7 This application is described in further detail.

[0029] Embodiment 1:

[0030] The present application embodiment discloses a straight thread connection device for prefabricated steel bars of a factory building. Figure 1 and Figure 2The straight thread connection device of the prefabricated steel bar of the factory building assembly type comprises 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 sets of connection assemblies 2. The two sets of connection assemblies 2 are respectively installed at both ends of the support rod to respectively connect the steel bars 21 on the two prefabricated components. The heads of the steel bars 21 are all threaded, and an accommodating cavity 6 for the support rod 1 to extend into is opened on the end surface of the steel bar 21.

[0031] Reference Figure 3 and Figure 4 Specifically, each set of connection components 2 includes an adjustment ring 3, a connection cover 4 and a locking seat 5. The adjustment ring 3 is in a circular ring shape and is coaxially threadedly sleeved on the outer wall of the support rod 1, and the outer diameter of the adjustment ring 3 is smaller than the outer diameter of the steel bar 21. The connection cover 4 is in a circular cover body shape, and 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 threaded cavity 9 facing the end of the support rod 1, and the threaded cavity 9 is used to thread 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 adjustment ring 3. In this embodiment, the locking seat 5 is in a circular ring shape. In other embodiments, the locking seat 5 can also be in the shape of a hexagonal nut.

[0032] When the connecting 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 connecting cover 4 .

[0033] Reference Figure 2 Furthermore, in the two prefabricated components, a stopper 7 is fixed on the inner end wall of the receiving cavity 6 of the steel bar 21 in the prefabricated component to be installed first. The stopper 7 is polygonal in shape, and the center line of the stopper 7 coincides with the axis of the steel bar 21. The two ends of the support rod 1 that are far away from each other are provided with stopper grooves 8 for sleeves of the stopper 7. In this embodiment, the stopper 7 is in the shape of a square, and the support rod 1 can be sleeved on the stopper 7 when it extends into the receiving cavity 6 along the axis parallel to the steel bar 21, so as to limit the rotation of the support rod 1 relative to the steel bar 21, so as to improve the convenience of moving the adjustment ring 3, the connecting cover 4 and the locking seat 5.

[0034] Reference Figure 2 and Figure 3 Furthermore, in order to enable the connection device to adapt to the radial offset and misalignment of the anti-rotation seat 7 relative to the steel bar 21, and to adapt to the radial offset and 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 the accommodating cavity 6 can adapt to the radial offset of the anti-rotation seat 7 and the steel bar 21 when enclosing the support rod 1. At the same time, the outer diameter of the adjustment ring 3 is larger than the inner diameter of the accommodating cavity 6 and smaller than the outer diameter of the steel bar 21, so as to limit the adjustment ring 3 from entering the accommodating cavity 6.

[0035] Reference Figure 3 and Figure 5 , moreover, the connection cover 4 includes a connection sleeve 41 and a movable ring 42. The connection sleeve 41 is hollow and cylindrical with two ends connected. The inner cavity of the connection sleeve 41 is the threaded cavity 9 for threading the steel bar 21. The movable ring 42 is annular and coaxially sleeved on the support rod 1. The inner wall of the connection sleeve 41 away from the end of the support rod 1 is provided with an annular movable cavity 18. The movable cavity 18 is used for the movable ring 42 to move radially relative to the connection sleeve 41, and the outer diameter of the movable ring 42 is smaller than the maximum diameter of the movable cavity 18 and larger than the inner diameter of the connection sleeve 41 to limit the movable ring 42 from being separated from the connection sleeve 41. Adaptively, in order to put the movable ring 42 into the connection sleeve 41, the connection sleeve 41 is assembled and welded. The movable ring 42 can adapt to the axial deviation between the support rod 1 and the steel bar 21 by radially moving relative to the connection sleeve 41, so that the connection sleeve 41 can still be threaded to the steel bar 21 when the axis of the support rod 1 and the axis of the steel bar 21 are relatively offset.

[0036] Reference Figure 3 and Figure 4 Furthermore, there is a deformable ring 10 and an abutting ring 11 in a circular shape and enclosing the support rod 1 between the locking seat 5 and the movable ring 42. The inner diameter of the deformable ring 10 is consistent with the inner diameter of the abutting ring 11 and both are larger than the outer diameter of the support rod 1. The outer diameter of the deformable ring 10, the outer diameter of the abutting ring 11 and the inner diameter of the connecting sleeve 41 are all consistent. The deformable ring 10 and the abutting ring 11 are distributed in sequence along the direction close to the locking seat 5. The deformable 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 deformable ring 10 is made of rubber, and the abutting ring 11 is made of steel. The common thickness of the abutting ring 11 plus the deformable 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.

[0037] Reference Figure 4 and Figure 5, a plurality of grooves 12 are arranged in an array on the side of the movable ring 42 facing the locking seat 5, and the grooves 12 are in an arc shape. A plurality of arc-shaped protrusions 19 are arranged in an array on the side of the abutting ring 11 facing away from the locking seat 5. After the connecting sleeve 41 is threadedly sleeved with the steel bar 21, the deformation ring 10 and the abutting ring 11 are first inserted into the cavity enclosed by the side of the movable ring 42 close to the locking seat 5 and the peripheral part of the connecting sleeve 41, and the side of the abutting ring 11 close to the locking seat 5 exceeds the side of the connecting sleeve 41 close to the locking seat 5, and 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 in the direction close to the movable ring 42, and the abutting ring 11 presses the deformation ring 10 until it undergoes elastic deformation, so that the deformation ring 10 partially abuts into the groove 12, thereby positioning the movable ring 42 relative to the abutting ring 11, that is, limiting 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 with the end surface of the connecting sleeve 41 .

[0038] Reference Figure 3 and Figure 4 In addition, a plurality of extrusion sheets 13 are evenly spaced and fixed along the circumference of the inner circumference of one end of the movable ring 42 close to the locking seat 5. The extrusion sheets 13 are in the shape of an arc coaxial with the movable ring 42, so that the inner circumference of the extrusion sheet 13 is against the outer wall of the support rod 1, and the extrusion sheet 13 is made of a material that can be deformed under pressure, such as aluminum alloy, copper alloy, polyamide, polyoxymethylene, etc.

[0039] 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.

[0040] 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.

[0041] Reference Figure 4 and Figure 5Specifically, 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.

[0042] 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: Step 1: Before assembly, a receiving cavity 6 is firstly formed at the end of the first component steel bar 21 and a rotation stopper 7 is fixed, and a receiving cavity 6 is firstly formed at the end of the second component steel bar 21.

[0043] 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.

[0044] Specifically, first, the adjusting ring 3 is threadedly moved to abut against the end of the steel bar 21, and then the connecting cover 4 is threadedly sleeved onto 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, and then the locking seat 5 is threadedly moved to abut against the end of the connecting sleeve 41, so that the locking seat 5 presses the deformation ring 10 through the abutment ring 11 to deform and embed it into the groove 12, and at the same time, the locking seat 5 squeezes the extrusion sheet 13, so that the extrusion sheet 13 is deformed and holds the support rod 1 tightly.

[0045] Step 3: Thread the adjusting ring 3 in the connecting assembly 2 at one end of each supporting rod 1 away from the first member to the same horizontal position; Step 4: Lift the second component into place so that the end of the support rod 1 away from the first component extends into the accommodating cavity 6 corresponding to the steel bar 21 of the second component, and the steel bar 21 of the second component abuts against the adjusting ring 3 to form a reserved gap between the first component and the second component, and then install the connecting cover 4 and the locking seat 5 in place in sequence.

[0046] Step 5: Inject waterproof sealant into the reserved seam.

[0047] Embodiment 2:

[0048] The difference between the embodiment of the present application and the first embodiment is that the structure of the locking seat 5 is different.

[0049] Reference Figure 6 and Figure 7 Specifically, in the present 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 which are sequentially connected along the axial direction of the support rod 1, and the first section 511 is farther away from the movable ring 42 than the second section 512. The first section 511 is threadedly sleeved on the support rod 1. In the present 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 caliber of the enclosing cavity 16 is greater than or equal to the outer diameter of the extrusion sheet 13.

[0050] The pushing column 52 slides radially in the second section 512 along the second section 512 . The second section 512 has a sliding hole for the pushing column 52 to slide. The sliding hole connects the outer periphery of the second section 512 and the enclosed cavity 16 . There are multiple pushing columns 52 evenly spaced along the circumference of the second section 512 .

[0051] The outer circumference of the second section 512 is coaxially provided with a thread groove 15 that is sunken relative to the outer circumference of the second section 512, so that the second section 512 forms a thread surface 20, and the drive ring 53 is coaxially threadedly sleeved on the second section 512 in cooperation with the thread groove 15, and the sliding hole is simultaneously connected to the thread groove 15. The inner circumference of the drive ring 53 has a chamfered surface 17 arranged in an annular direction, and the chamfered surface 17 is inclined along the axial direction of the drive ring 53, and the distance between the chamfered surface 17 and the thread surface 20 of the second section 512 gradually increases in the direction close to the movable ring 42.

[0052] When the main body 51 is threadedly moved to the second section 512 and abutted against the connecting sleeve 41, and the driving ring 53 is located at the end of the thread groove 15 away from the movable ring 42, the chamfered surface 17 is opposite to the sliding hole, and one end of the pushing column 52 abuts against the chamfered surface 17. The chamfered surface 17 restricts the pushing column 52 from disengaging from the second section 512. The other end of the pushing column 52 abuts against the extrusion section 131 through the guide of the guide section 132. At this time, the driving ring 53 is threadedly moved toward the movable ring 42 to the end of the thread groove 15 close to the movable ring 42. The driving ring 53 pushes the pushing column 52 toward the support rod 1 through the chamfered surface 17, so that the pushing column 52 squeezes the extrusion section 131, and the extrusion section 131 is squeezed and deformed to hold the support rod 1 tightly.

[0053] Therefore, the locking seat 5 is connected to the connecting sleeve 41 by first adjusting the driving ring 53 to the end of the thread groove 15 away from the movable ring 42, then threading the main body 51 to abut against the connecting sleeve 41, and then threading the driving ring 53 to the end of the thread groove 15 close to the movable ring 42.

[0054] It should be noted that the thread rotation direction of the threaded surface 20 of the second section 512 is consistent with the thread rotation direction of the corresponding support rod 1, so that when the drive ring 53 moves threadedly toward the movable ring 42, it has a tendency to drive the main body 51 to move threadedly toward the movable ring 42, thereby further assisting the main body 51 to tighten against the connecting sleeve 41.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in 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).

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 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).

4. The straight thread connection device for prefabricated steel bars of factory buildings according to claim 3 is characterized in that: 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).

5. The straight thread connection device for prefabricated steel bars of factory buildings according to claim 3 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).

6. The straight thread connection device for prefabricated steel bars of factory buildings according to claim 5 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.

7. The straight thread connection device for prefabricated steel bars of factory buildings according to claim 5 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).

8. The straight thread connection device for prefabricated steel bars of factory buildings according to claim 7 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).

9. 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 8, 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.

10. The method for connecting steel bars of prefabricated components of a factory building with straight threads according to claim 9, 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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