Reinforcing steel bar mechanical connecting device for reinforcing steel bar modular construction
By combining mechanical connecting sleeves with semi-circular threaded threads, the problem of rebar connection strength and safety in modular rebar construction is solved, achieving efficient and reliable rebar connection suitable for various construction environments.
Patent Information
- Application Number
- CN202520507558.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-21
AI Technical Summary
In modular construction of reinforcing bars, there are processing errors in the connection between reinforcing bars, which leads to a decrease in the tensile strength of the reinforcing bars when using sleeve connections, and the exposed threads weaken the structural safety under stress.
The system employs a combination of mechanical connecting sleeves and semi-circular threaded threads to achieve rebar connection through threaded engagement. It also utilizes compensating threads and snap rings to compensate for the strength of exposed rebar and prevent displacement and corrosion.
It improves the tensile strength and corrosion resistance of the steel bar joints, reduces installation and adjustment time, and is suitable for construction needs in various environments.
Smart Images
Figure CN223952105U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to building technical field especially, it is a kind of steel bar mechanical connecting device for steel bar modular construction. BACKGROUND
[0002] In the steel bar modular construction process, steel bar is directly processed into integral steel cage module in factory, steel bar position is fixed and cannot rotate, and there is certain processing error. After steel bar module is hoisted to site, module steel bar needs to be connected again under the condition that steel bar is not rotated and displaced, considering the error of steel bar spacing.
[0003] Using general sleeve to connect modular steel bar, there is a long remaining thread exposed, which seriously weakens the tensile property of steel bar and reduces the structural stress safety. INVENTION CONTENTS
[0004] To solve the above technical problems, the utility model provides a kind of steel bar mechanical connecting device for steel bar modular construction.
[0005] The utility model provides a kind of steel bar mechanical connecting device for steel bar modular construction, including mechanical connecting sleeve, first half circle embrace silk screw buckle and second half circle embrace silk screw buckle;
[0006] The mechanical connecting sleeve is equipped with first internal thread, and is formed with the thread cooperation with the steel bar thread section of first steel bar and second steel bar;When the mechanical connecting sleeve rotates, the mechanical connecting sleeve is driven to move axially by thread engagement, and the first steel bar and the second steel bar are connected;
[0007] The first half circle embrace silk screw buckle and second half circle embrace silk screw buckle are spliced to form a whole circle structure, and the inner wall is equipped with the compensation thread matched with the steel bar thread section;The first half circle embrace silk screw buckle and the second half circle embrace silk screw buckle are sleeved on the exposed steel bar thread section.
[0008] Optionally, it further includes snap spring that is arranged on the outer periphery of the half circle embrace silk screw buckle, the snap spring has inward protruding clamping protrusions, and the clamping protrusions are formed with interference fit with the annular grooves of the outer wall of the first half circle embrace silk screw buckle and the second half circle embrace silk screw buckle.
[0009] Optionally, the butt joint surface of the first half circle embrace silk screw buckle and the second half circle embrace silk screw buckle is equipped with anti-disengagement tenon that is engaged with each other, and the anti-disengagement tenon includes protruding part arranged on the first half circle embrace silk screw buckle and recessed part arranged on the second half circle embrace silk screw buckle.
[0010] Optionally, the thickness of the first half circle embrace silk screw buckle and the second half circle embrace silk screw buckle is higher than the sum of steel bar rib height and thread depth.
[0011] Optionally, the mechanical connection sleeve is provided with a second internal thread, and the first half-round wire clamping screw and the second half-round wire clamping screw are provided with external threads matched with the second internal thread.
[0012] The diameter of the second internal thread is greater than the diameter of the first internal thread, the axial length of the second internal thread is less than the axial length of the first internal thread, and the external thread is arranged on the side of the mechanical connection sleeve in the axial direction of the external thread.
[0013] Optionally, the clamping protrusions of the clamping spring are distributed at equal intervals in the circumferential direction.
[0014] Optionally, the first internal thread of the mechanical connection sleeve is divided into a first thread segment and a second thread segment, the pitch of the first thread segment is greater than that of the second thread segment by 0.1-0.3 mm, forming a differential thread structure, and the first thread segment and the second thread segment are provided with cavities.
[0015] The utility model has the following technical effects:
[0016] The utility model provides a steel bar mechanical connection device for steel bar modularization construction, is fixed on one steel bar in the mechanical connection sleeve screw connection, for example first steel bar, after rotating the mechanical connection sleeve along the axial direction, until the mechanical connection sleeve is screwed with second steel bar, that is, realize connecting first steel bar and second steel bar. Since the mechanical connection sleeve needs to be screwed on the first steel bar in advance, the length of the steel bar thread segment of the first steel bar is greater than that of the second steel bar, and after the mechanical connection sleeve connects the first steel bar and the second steel bar, part of the steel bar thread segment on the first steel bar is exposed outside, the utility model is screwed on the exposed steel bar thread segment by the first half-round wire clamping screw and the second half-round wire clamping screw, and the threads of the screw and the steel bar thread segment are engaged with each other, so that the first half-round wire clamping screw and the second half-round wire clamping screw can compensate the exposed steel bar thread segment, restore or improve the strength at the position, and avoid breaking under stress. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.
[0018] Figure 1 A steel bar mechanical connection device structure schematic view for steel bar modularization construction is provided for the embodiments of the utility model.
[0019] Figure 2 Another steel bar mechanical connecting device structure schematic view for steel bar modular construction is provided for the embodiment of the utility model;
[0020] Figure 3 Another steel bar mechanical connecting device structure schematic view for steel bar modular construction is provided for the embodiment of the utility model;
[0021] Figure 4 Another steel bar mechanical connecting device structure schematic view for steel bar modular construction is provided for the embodiment of the utility model;
[0022] Figure 5 Another steel bar mechanical connecting device structure schematic view for steel bar modular construction is provided for the embodiment of the utility model;
[0023] Figure 6 Another steel bar mechanical connecting device structure schematic view for steel bar modular construction is provided for the embodiment of the utility model;
[0024] Figure 7 A steel bar mechanical connecting device application scene schematic view for steel bar modular construction is provided for the embodiment of the utility model;
[0025] Reference signs
[0026] 1, mechanical connecting sleeve; 2, first half round wire embracing screw buckle; 3, second half round wire embracing screw buckle; 11, first internal thread; 01, first steel bar; 02, second steel bar; 10, steel bar threading section; 4, clamping spring; 41, clamping protrusion; 23, annular groove; 24, anti-disengagement tenon; 241, protruding part; 242, recessed part; 12, second internal thread; 13, external thread; 11a, first threaded section; 11b, second threaded section. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.
[0028] Figure 1The utility model provides a kind of steel bar mechanical connecting device structure schematic diagram for steel bar modularization construction provided for the embodiment of the utility model, including mechanical connecting sleeve 1, first half circle silk embracing screw buckle 2 and second half circle silk embracing screw buckle 3.Mechanical connecting sleeve 1 is equipped with first internal thread 11, and with the steel bar thread segment 10 of first steel bar 01, second steel bar 02 Form thread cooperation.When mechanical connecting sleeve 1 rotates, it is driven mechanical connecting sleeve 1 axial movement by thread engagement, connects first steel bar 01 and second steel bar 02.First half circle silk embracing screw buckle 2 and second half circle silk embracing screw buckle 3 are split to form whole circle structure, and its inner wall is equipped with the compensation thread matched with steel bar thread segment 10.First half circle silk embracing screw buckle 2 and second half circle silk embracing screw buckle 3 are sleeved in exposed steel bar thread segment 10.
[0029] As Figure 1 Shown, when rotating mechanical connecting sleeve 1, first internal thread 11 at both ends is engaged with steel bar thread segment 10, drives mechanical connecting sleeve 1 to second steel bar 02 moves until the steel bar thread segment 10 of second steel bar 02 is completely covered.Afterwards, two half circle silk embracing screw buckles, i.e. first half circle silk embracing screw buckle 2 and second half circle silk embracing screw buckle 3 are split and wrapped exposed steel bar thread segment 10, and the strength loss of steel bar thread segment 10 exposed outside is compensated by the special compensation thread of inner wall.In this embodiment, the fixing mode after first half circle silk embracing screw buckle 2 and second half circle silk embracing screw buckle 3 are split is not limited, and fixed split relationship can be formed between the two through other components outside, or fixed split relationship can be formed through its own specific structure, such as clamping groove and the like. Figure 1 For the convenience of illustration, part of steel bar thread segment 10 is exemplarily exposed outside first half circle silk embracing screw buckle 2 and second half circle silk embracing screw buckle 3.Obviously, part of steel bar thread segment 10 can also be exposed outside first half circle silk embracing screw buckle 2 and second half circle silk embracing screw buckle 3 based on actual demand in some scenarios.
[0030] The design utilizes axial force generated by the rotation of mechanical connecting sleeve 1 to realize steel bar displacement-free connection, avoiding the difficulty that steel bar needs to be adjusted in position in traditional method.Half circle silk embracing screw buckle wrapped exposed steel bar thread segment 10 can effectively restore the strength at the connection, and on-site test shows that the tensile performance of joint reaches or exceeds the standard of base material, while exposed steel bar thread segment 10 is completely covered, which significantly improves corrosion resistance, and is suitable for long-term service in high humidity environment.
[0031] Figure 2 Another kind of steel bar mechanical connecting device structure schematic diagram for steel bar modularization construction provided for the embodiment of the utility model is provided.Combining with referring to Figure 1 And Figure 2In some embodiments, a clamping spring 4 is further included, which is clamped on the outer periphery of the half-round wire-encircling screw, and the clamping spring 4 has an inwardly protruding clamping protrusion 41 which forms an interference fit with the annular groove 23 of the outer wall of the first half-round wire-encircling screw 2 and the second half-round wire-encircling screw 3.
[0032] As shown in Figure 1 and Figure 2 , Figure 2 a is a side view of the first half-round wire-encircling screw 2 and the second half-round wire-encircling screw 3, Figure 2 b is a cross-sectional view of the clamping spring 4. During installation, the operator aligns the clamping protrusion 41 of the clamping spring 4 with the annular groove 23 of the first half-round wire-encircling screw 2 and the second half-round wire-encircling screw 3, and makes them tightly clamped by a special tool. The radial pressure of the clamping spring 4 forms a continuous clamping force, preventing the first half-round wire-encircling screw 2 and the second half-round wire-encircling screw 3 from being displaced in vibration.
[0033] Tests show that the first half-round wire-encircling screw 2 and the second half-round wire-encircling screw 3 can remain stable under continuous vibration after the clamping spring 4 is added, and only a simple tool is needed to release the locking during disassembly, facilitating repeated use. This structure not only ensures reliability but also reduces overall weight, and is particularly suitable for temporary support projects that need to be frequently disassembled.
[0034] Figure 3 Another structure schematic diagram of a steel bar mechanical connecting device for steel bar modular construction is provided in an embodiment of the present application. In some embodiments, the abutting surfaces of the first half-round wire-encircling screw 2 and the second half-round wire-encircling screw 3 are provided with mutually meshing anti-disengagement tenons 24, and the anti-disengagement tenons 24 include a protruding portion 241 provided on the first half-round wire-encircling screw 2 and a recessed portion 242 provided on the second half-round wire-encircling screw 3.
[0035] In some scenarios, when the steel bar axis deviation is large, the anti-disengagement tenons 24 of the abutting surfaces of the first half-round wire-encircling screw 2 and the second half-round wire-encircling screw 3 play a role. The meshing of the protruding portion 241 and the recessed portion 242 forms a mechanical lock, which can still maintain the integrity of the overall structure even if the external clamping spring 24 fails. During installation, the mortise is tightly engaged by a moderate torque.
[0036] Actual application shows that this design greatly reduces the installation and adjustment time, and is stable in performance in low-temperature environments, overcoming the environmental limitations of traditional adhesives.
[0037] In some embodiments, the thickness of the first half-round wire-encircling screw 2 and the second half-round wire-encircling screw 3 is higher than the sum of the steel bar rib height and the thread depth.
[0038] For the application scenarios of large-diameter high-strength steel bars, the thickened design of the first half-round wire-encircling screw 2 and the second half-round wire-encircling screw 3 compensates for the weakening of the steel bar cross-sectional thickness caused by threading.
[0039] By optimizing the wall thickness, the stress distribution of the screw thread is more uniform when bearing load, and early failure caused by stress concentration is avoided.
[0040] Engineering detection shows that the thickened screw thread has excellent durability under fatigue load, and is particularly suitable for occasions with extremely high requirements for connection reliability, such as containment of nuclear power plants.
[0041] Figure 4 Another kind of reinforcing steel bar mechanical connection device structure schematic diagram for reinforcing steel bar modular construction is provided for the embodiment of the utility model. In some embodiments, the mechanical connection sleeve 1 is provided with a second internal thread 12, and the first half-round wire-encircling screw thread 2 and the second half-round wire-encircling screw thread 3 are provided with external threads 13 matched with the second internal thread 12. The diameter of the second internal thread 12 is greater than the diameter of the first internal thread 11, the axial length of the second internal thread 12 is less than the axial length of the first internal thread 11, and the external threads 13 are arranged on the side of the external threads 13 in the axial direction of the mechanical connection sleeve 1.
[0042] Specifically, in the different gender node connection, the second internal thread of the mechanical connection sleeve 1 and the external thread form double matching. Through the structure design, after the first half-round wire-encircling screw thread 2 and the second half-round wire-encircling screw thread 3 form a complete circular screw thread, the external threads 13 and the second internal threads 12 are engaged with each other, so that the mechanical connection sleeve 1, the first half-round wire-encircling screw thread 2 and the second half-round wire-encircling screw thread 3 are fixed with each other.
[0043] Figure 5 Another kind of reinforcing steel bar mechanical connection device structure schematic diagram for reinforcing steel bar modular construction is provided for the embodiment of the utility model. In some embodiments, the clamping protrusions 41 of the clamping spring 4 are distributed at equal intervals in the circumferential direction.
[0044] Specifically, considering that the foundation settlement frequently occurs in soft soil area construction, the equal-interval clamping protrusions 41 of the clamping spring 4 are designed to realize uniform stress distribution. By optimizing the protrusion interval and height, stable clamping force is provided within a limited deformation amount.
[0045] Actual monitoring shows that the improved clamping spring 4 maintains balanced stress under dynamic load, prolongs the maintenance period, and its simple installation characteristics are particularly suitable for field operation environment.
[0046] Figure 6 Another kind of reinforcing steel bar mechanical connection device structure schematic diagram for reinforcing steel bar modular construction is provided for the embodiment of the utility model. In some embodiments, the first internal thread 11 of the mechanical connection sleeve 1 is divided into a first thread segment 11a and a second thread segment 11b, the pitch of the first thread segment 11a is 0.1-0.3mm larger than that of the second thread segment 11b, a differential thread structure is formed, and the first thread segment 11a and the second thread segment 11b are provided with cavities.
[0047] Specifically, the threaded sections with different pitches of the mechanical connecting sleeve 1 generate a difference in axial clamping force during rotation. This progressive clamping mechanism effectively eliminates the mating clearance and improves the overall rigidity of the joint.
[0048] Engineering applications show that this design can achieve greater preload at the same torque, making it particularly suitable for critical parts subjected to alternating loads and significantly improving the structural dynamic performance.
[0049] In addition, the cavity design can reduce thread friction between the reinforcing bar and the mechanical connection sleeve 1 during the connection process.
[0050] The following is a brief description of how to use the device provided by this utility model.
[0051] like Figure 7 This is a schematic diagram illustrating an application scenario of a mechanical connection device for modular construction of reinforcing bars, provided as an embodiment of the present invention.
[0052] First, screw the mechanical connection sleeve 1 onto the threaded section 10 of the first reinforcing bar 01, as follows. Figure 7 As shown in (a).
[0053] The second step is to rotate the mechanical connecting sleeve 1 forward along the direction of the second reinforcing bar 02 until the mechanical connecting sleeve 1 completely covers the threaded section 10 of the second reinforcing bar 02. Figure 7 As shown in (b).
[0054] The third step involves splicing the first semi-circular threaded thread 2 and the second semi-circular threaded thread 3 onto the exposed threaded section 10 of the first reinforcing bar 01, forming a complete threaded structure. A retaining spring 4 is then used to secure the first semi-circular threaded thread 2 and the second semi-circular threaded thread 3. Figure 7 As shown in (c).
[0055] It should be noted that the terminology used in this utility model is for describing specific embodiments only and is not intended to limit the scope of this application. As shown in this utility model specification, unless the context clearly indicates otherwise, words such as "a," "an," "an," and / or "the" do not specifically refer to the singular and may include the plural. The terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, or apparatus. Without further limitations, an element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element.
[0056] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting" and the like should be broadly understood, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0057] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application.
Claims
1. A mechanical connecting device for reinforcing steel modular construction, characterized in that, Includes a mechanical connecting sleeve, a first semi-circular threaded thread, and a second semi-circular threaded thread; The mechanical connecting sleeve is provided with a first internal thread and forms a threaded engagement with the threaded sections of the first and second reinforcing bars; when the mechanical connecting sleeve rotates, it is driven to move axially through the thread engagement, connecting the first and second reinforcing bars; The first semi-circular threaded thread and the second semi-circular threaded thread are joined together to form a complete circular structure, and the inner wall of the structure is provided with compensating threads that cooperate with the threaded section of the steel bar; the first semi-circular threaded thread and the second semi-circular threaded thread are sleeved on the exposed threaded section of the steel bar.
2. The apparatus of claim 1, wherein, It also includes a retaining spring that is snapped onto the outer periphery of the semi-circular threaded thread, the retaining spring having an inwardly protruding snapping protrusion that forms an interference fit with the annular groove on the outer wall of the first and second semi-circular threaded thread.
3. The apparatus of claim 1 or 2, wherein, The mating surfaces of the first semi-circular threaded thread and the second semi-circular threaded thread are provided with interlocking anti-disengagement tenons, which include a protrusion on the first semi-circular threaded thread and a recess on the second semi-circular threaded thread.
4. The apparatus of claim 1, wherein, The thickness of the first semicircular threaded thread and the second semicircular threaded thread is greater than the sum of the height of the steel rib and the threading depth.
5. The apparatus of claim 1, wherein, The mechanical connection sleeve is provided with a second internal thread, and the first semi-circular threaded thread and the second semi-circular threaded thread are provided with external threads that mate with the second internal thread. The diameter of the second internal thread is greater than the diameter of the first internal thread, the axial length of the second internal thread is less than the axial length of the first internal thread, and the external thread is located on the side of the external thread facing the mechanical connection sleeve in the axial direction.
6. The apparatus of claim 2, wherein, The snap ring has snap-fit protrusions that are evenly spaced along the circumference.
7. The apparatus of claim 1, wherein, The first internal thread of the mechanical connecting sleeve is divided into a first thread segment and a second thread segment. The pitch of the first thread segment is 0.1-0.3 mm larger than that of the second thread segment, forming a differential thread structure. The first thread segment and the second thread segment are provided with cavities.