Mechanical connecting piece for building

Abstract

The utility model relates to a mechanical connecting piece for a building. The mechanical connecting piece comprises a connecting sleeve, a connecting rod and a limiting ring, the connecting rod comprises a rod body and a clamping head located at one end of the rod body. The limiting ring is at least partially located in the containing cavity and located between the connecting sleeve and the connecting rod, the clamping head abuts against the limiting ring, the limiting ring is provided with a radial adjusting hole, and the connecting rod can move along the radial adjusting hole. The limiting ring is provided with a rotary clamping groove, the clamping head and the rotary clamping groove are in sliding fit in the length direction of the radial adjusting hole, and when the connecting rod rotates around the axis of the connecting rod, the clamping head can be connected with the rotary clamping groove in a clamped mode so as to drive the limiting ring to rotate relative to the connecting sleeve. The connecting piece is flexible in installation and easy to operate, the limiting ring can be rapidly adjusted to the accurate position, the connecting operation difficulty can be remarkably reduced, the connecting efficiency is greatly improved, and the requirement of site construction for timeliness is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to prefabricated component connecting technical field especially relates to a building mechanical connector. BACKGROUND

[0002] The prefabricated concrete component is usually designed with the steel bars outwardly extending to facilitate mutual splicing, and in the prefabricated component splicing construction process, due to the production processing, on-site assembly error and other reasons, the two steel bars to be connected can be misaligned or inclined and not on the same straight line, and thus cannot be connected by using the conventional connector.

[0003] To this end, the related technology provides a steel bar connector to connect the two steel bars not on the same straight line, the steel bar connector includes a sleeve and a connecting rod axially inserted into the sleeve, the sleeve is internally provided with a mounting cavity, the bottom of the sleeve is provided with a through hole in communication with the mounting cavity, and the top of the sleeve is provided with an internal thread to connect the first steel bar, one end of the connecting rod is designed with a limiting clamp head, the other end of the connecting rod extends out of the through hole to connect the second steel bar, and the limiting clamp head of the connecting rod is provided with an adjusting ring between the bottom wall of the mounting cavity, the adjusting ring is designed with a slot, and the connecting rod can move along the slot of the adjusting ring to adjust the radial position of the connecting rod relative to the sleeve, thereby realizing the connection of the two steel bars with different axes.

[0004] However, in actual use, in order to rotate the adjusting ring to the appropriate position so that the direction of the slot of the adjusting ring is consistent with the misalignment direction or the inclination direction of the two steel bars, the adjusting ring can only be rotated by the connecting rod, on the one hand, the connecting rod needs to be slid along the slot to a position far away from the center to generate a torque, and then the adjusting ring is rotated, on the other hand, due to the friction between the adjusting ring and the sleeve, there is a feeling of resistance when the adjusting ring is rotated by the connecting rod, and the operation is extremely unstable, and the adjusting ring can be either rotated to the position or rotated too much, it is difficult to quickly adjust the adjusting ring to the accurate position, and it often needs to be repeatedly operated to be successful, which is time-consuming and laborious, and if a large number of such connectors are needed on site, the construction progress will be seriously delayed. TECHNICAL SOLUTION

[0005] The technical scheme provides a building mechanical connector to solve the above technical problems.

[0006] The building mechanical connecting piece provided by the technical scheme comprises a connecting sleeve, a connecting rod and a limiting ring, the inside of the connecting sleeve is provided with a receiving cavity, one end of the connecting sleeve is provided with a through hole which is in communication with the receiving cavity, the connecting rod is arranged in the connecting sleeve, the connecting rod comprises a rod body which extends out of the through hole and a clamping head which is located at one end of the rod body, the limiting ring is located at least partially in the receiving cavity and between the connecting sleeve and the connecting rod, the clamping head abuts against the limiting ring, the limiting ring is provided with a radial adjusting hole, the connecting rod can move along the radial adjusting hole, the limiting ring is provided with a rotating clamping groove, the clamping head and the rotating clamping groove are slidably matched along the length direction of the radial adjusting hole, and the clamping head and the rotating clamping groove are stop matched in the rotating direction, so as to drive the limiting ring to rotate relative to the connecting sleeve.

[0007] Further, the rotating clamping groove is located at the upper end of the radial adjusting hole, the extending direction of the rotating clamping groove is consistent with the length direction of the radial adjusting hole, the radial adjusting hole penetrates the bottom surface of the limiting ring downward from the bottom wall of the rotating clamping groove, the clamping head is provided with a rotating clamping part, and the rotating clamping part is embedded in the rotating clamping groove, so as to limit the circumferential rotation freedom degree of the clamping head relative to the limiting ring.

[0008] Further, the rotating clamping groove is located at one side or both sides of the upper end of the radial adjusting hole, the extending direction of the rotating clamping groove is consistent with the length direction of the radial adjusting hole, the clamping head is provided with a rotating clamping part, and the rotating clamping part is embedded in the rotating clamping groove, so as to limit the circumferential rotation freedom degree of the clamping head relative to the limiting ring.

[0009] Further, the rotating clamping part of the clamping head is provided with a limiting surface, and the limiting surface is circumferentially limited matched with the side wall of the rotating clamping groove.

[0010] Further, the clamping head comprises a first stepped part and a second stepped part, the first stepped part axially abuts against the top surface of the limiting ring, the rotating clamping part comprises the second stepped part, the second stepped part axially abuts against the bottom wall of the rotating clamping groove, and the side wall of the second stepped part forms the limiting surface.

[0011] Further, the clamping head is provided with the first stepped part and the second stepped part which are symmetrical in the width direction of the radial adjusting hole.

[0012] Further, the rotating clamping part of the clamping head comprises a protruding part which is embedded in the rotating clamping groove from the axial abutting surface of the clamping head.

[0013] Further, the clamping head is provided with the protruding part which is symmetrical in the width direction of the radial adjusting hole.

[0014] Furthermore, the rotating slot includes a "U"-shaped slot with an upward-facing opening or an "L"-shaped slot with only one sidewall.

[0015] Furthermore, the receiving cavity is provided with a detachment-preventing surface, and the outer wall of the limiting ring is provided with a snap-fit ​​surface that abuts against the detachment-preventing surface, wherein the detachment-preventing surface and the snap-fit ​​surface are conical surfaces or partially spherical surfaces.

[0016] Furthermore, an axial stop surface is formed between the receiving cavity and the through hole to prevent the limiting ring from disengaging from the connecting sleeve. The limiting ring includes a first cylindrical section received in the receiving cavity and a second cylindrical section received in the through hole, and a stepped surface is formed between the outer wall of the first cylindrical section and the outer wall of the second cylindrical section.

[0017] Furthermore, the inner diameter of the through hole gradually decreases, and the shape of the second cylindrical section is adapted to the through hole.

[0018] Furthermore, it also includes a locking nut fitted onto the rod body of the connecting rod and screwed onto the rod body, the locking nut abutting against the connecting sleeve to lock and fix one end of the connecting sleeve to the connecting rod.

[0019] Furthermore, one end of the connecting sleeve extending from the rod body is a partially spherical surface, and the locking nut is provided with a ball-shaped cup portion that can match the partially spherical surface of the connecting sleeve.

[0020] Furthermore, the radial adjustment hole is located eccentrically on the limiting ring.

[0021] Furthermore, the two ends of the rotating slot pass through the limiting ring.

[0022] Furthermore, the dimension of the card head in the width direction of the radial adjustment hole is greater than the dimension of the card head in the length direction of the radial adjustment hole.

[0023] Furthermore, the two sides of the clip head in the radial adjustment hole length direction are arc-shaped so as to match the inner wall of the connecting sleeve.

[0024] Furthermore, the axial projection of the card head is elliptical.

[0025] Furthermore, let the width of the rotating slot be L1, the length of the card head along its major axis be L2, and the length of the card head along its minor axis be L3, then L2 > L3 > L1.

[0026] The mechanical connector for construction provided by this technical solution has a rotating groove designed on the limiting ring. The locking head can slide and engage with the rotating groove along the length direction of the radial adjustment hole, and can also engage with the rotating groove when the connecting rod rotates around its own axis. This causes the limiting ring to rotate relative to the connecting sleeve, rotating the adjusting ring to a suitable position so that the direction of its radial adjustment hole is consistent with the misalignment or skew direction of the two rods to be connected, thereby realizing the docking of the two rods to be connected. Thus, regardless of the position of the connecting rod in the radial adjustment hole, it can directly drive the limiting ring to rotate by rotating the connecting rod. If the connecting rod is exactly on the central axis of the connecting sleeve, it can drive the limiting ring to rotate synchronously around the central axis of the connecting sleeve. If the connecting rod deviates from the central axis of the connecting sleeve, the connecting rod can drive the limiting ring to rotate around the central axis of the connecting sleeve. While rotating around its own central axis, the connecting rod can also revolve around the central axis of the connecting sleeve. The entire rotation process is smooth and unobstructed. Through hand movements, the limiting ring can be rotated significantly by the connecting rod, or it can be rotated at a slight angle by the connecting rod. There will be no under-rotation or over-rotation. The installation is flexible and easy to operate, and the limiting ring can be quickly adjusted to the accurate position. This can significantly reduce the difficulty of connection operation, greatly improve connection efficiency, and meet the timeliness requirements of on-site construction. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of a mechanical connector for construction provided in the first embodiment of the present utility model;

[0028] Figure 2 for Figure 1 The mechanical connector for building shown is viewed from the end of the structure.

[0029] Figure 3 for Figure 1 A top view of the mechanical connector used in the building shown;

[0030] Figure 4 for Figure 1 A cross-sectional view of the connecting sleeve shown;

[0031] Figure 5 for Figure 1 The isometric view of the limiting ring shown;

[0032] Figure 6 for Figure 5 A cross-sectional view of the limiting ring shown;

[0033] Figure 7 for Figure 1 Axonometric view of the connecting rod shown;

[0034] Figure 8This is a schematic diagram illustrating the operation of rotating the adjusting ring by rotating the connecting rod;

[0035] Figure 9 for Figure 8 A schematic diagram showing how the connecting rod drives the adjusting ring to rotate and revolve.

[0036] Figure 10 This is a structural schematic diagram of a mechanical connector for construction provided in the second embodiment of the present utility model;

[0037] Figure 11 for Figure 10 The isometric view of the limiting ring shown;

[0038] Figure 12 for Figure 11 A cross-sectional view of the limiting ring shown;

[0039] Figure 13 for Figure 10 The diagram shows the structure of the locking nut.

[0040] Figure 14 An exploded view of the mechanical connector for construction provided in the third embodiment of this utility model;

[0041] Figure 15 for Figure 14 The isometric view of the limiting ring shown;

[0042] Figure 16 This is a structural schematic diagram of the mechanical connector for construction provided in the fourth embodiment of the present utility model;

[0043] Figure 17 for Figure 16 The isometric view of the limiting ring shown;

[0044] Figure 18 for Figure 16 Axonometric view of the connecting rod shown;

[0045] Figure 19 This is a structural schematic diagram of a mechanical connector for construction provided in the fifth embodiment of the present utility model;

[0046] Figure 20 for Figure 19 The isometric view of the limiting ring shown;

[0047] Figure 21 for Figure 19 Axonometric view of the connecting rod shown;

[0048] Figure 22 A schematic diagram of a structure for connecting the first member of a first precast component and the second member of a second precast component using a mechanical connector for construction according to the first embodiment;

[0049] Figure 23 for Figure 22 The image shows an isometric view of the two sets of mechanical connectors used in construction coming together.

[0050] Figure 24 This is a schematic diagram of a structure using the mechanical connector for building construction according to the second embodiment for docking;

[0051] Figure 25 for Figure 24 A sectional view;

[0052] Figure 26 This is a schematic diagram of a structure using a mechanical connector for building construction according to the third embodiment.

[0053] Figure 27 for Figure 26 A sectional view.

[0054] In the picture:

[0055] 1-Connecting sleeve; 11-Receiving cavity; 111-Anti-detachment stop surface; 12-Through hole; 13-Axial stop surface; 16-Threaded part; 2-Connecting rod; 21-Rod body; 211-Threaded part; 22-Clipper; 221-First step part; 222-Second step part; 223-Limiting surface; 224-Protrusion part; 3-Limiting ring; 3a-First cylindrical section; 3b-Second cylindrical section; 31-Radial adjustment hole; 32-Snapping surface; 33-Stepped surface; 36-Rotating groove; 4-Locking nut; 41-Spherical cup part; 5-Intermediate connecting piece; 6-Connecting nut; 7-Locking nut; 100-First prefabricated component; 101-First rod; 200-Second prefabricated component; 201-Second rod. Detailed Implementation

[0056] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0057] In this document, terms such as "upper," "lower," "inner," and "outer" are established based on the positional relationships shown in the accompanying drawings. Depending on the drawings, the corresponding positional relationships may also change. Therefore, they should not be interpreted as an absolute limitation on the scope of protection. Moreover, relational terms such as "first" and "second" are only used to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0058] Please refer to Figures 1 to 7 , Figure 1 This is a structural schematic diagram of a mechanical connector for construction provided in the first embodiment of the present utility model; Figure 2 for Figure 1The mechanical connector for building shown is viewed from the end of the structure. Figure 3 for Figure 1 A top view of the mechanical connector used in the building shown; Figure 4 for Figure 1 A cross-sectional view of the connecting sleeve shown; Figure 5 for Figure 1 The isometric view of the limiting ring shown; Figure 6 for Figure 5 A cross-sectional view of the limiting ring shown; Figure 7 for Figure 1 The isometric view of the connecting rod shown.

[0059] As shown in the figure, in one specific embodiment, the mechanical connector for construction provided by this utility model mainly consists of a connecting sleeve 1, a connecting rod 2, and a limiting ring 3. The connecting sleeve 1 has a receiving cavity 11 inside, and one end of the connecting sleeve 1 has a through hole 12 communicating with the receiving cavity 11. The connecting rod 2 passes through the connecting sleeve 1 and includes a rod body 21 extending out of the through hole 12 and a clamp 22 located at one end of the rod body 21. The clamp 22 is a part that is enlarged relative to the diameter of the rod body 21, so that the connecting rod 2 is T-shaped in the longitudinal section.

[0060] The limiting ring 3 is located in the receiving cavity 11 and between the connecting sleeve 1 and the connecting rod 2. The clamp 22 abuts against the limiting ring 3. The limiting ring 3 is provided with a radial adjustment hole 31. The connecting rod 2 can move along the radial adjustment hole 31 to adjust the radial position of the connecting rod 2 relative to the connecting sleeve 1, to compensate for radial errors or deviations, and to realize the connection of different axes.

[0061] The cross-sectional area of ​​the through hole 12 is larger than that of the radial adjustment hole 31. The projection of the position adjustment hole 31 in the horizontal direction falls completely into the projection of the through hole 12 in the horizontal direction, making the rod 21 of the connecting rod 2 more smoothly deflected radially or moved horizontally in the radial adjustment hole 31.

[0062] An axial stop surface 13 is formed between the receiving cavity 11 and the through hole 12 to prevent the limiting ring 3 from disengaging from the connecting sleeve 1. The limiting ring 3 has a first cylindrical section 3a located in the receiving cavity 11 and a second cylindrical section 3b located in the through hole 12. The inner diameter of the through hole 12 gradually decreases. The shape of the second cylindrical section 3b is adapted to the through hole 12. A stepped surface 33 is formed between the outer wall of the first cylindrical section 3a and the outer wall of the second cylindrical section 3b.

[0063] To facilitate adjustment of the limiting ring 3, a rotating groove 36 is provided at the end of the limiting ring 3 that abuts against the connecting rod 2. The locking head 22 of the connecting rod 2 is embedded in the rotating groove 36 and can slide and cooperate with the rotating groove 36 along the length direction of the radial adjustment hole 31. At the same time, when the connecting rod 2 rotates around its own axis, the locking head 22 can engage with the rotating groove 36 to drive the limiting ring 3 to rotate relative to the connecting sleeve 1.

[0064] In this embodiment, the rotating slot 36 is located at the upper end of the radial adjustment hole 31, and its extension direction is consistent with the length direction of the radial adjustment hole 31. Both ends of the slot 3 pass through the limiting ring 3, and its length and width are greater than those of the radial adjustment hole 31. The radial adjustment hole 31 extends downward from the bottom wall of the rotating slot 36 through the bottom surface of the limiting ring 3. The card head 22 is provided with a rotating locking part, which is embedded in the rotating slot 36 to restrict the circumferential rotational freedom of the card head 22 relative to the limiting ring 3.

[0065] Specifically, the locking head 22 has a first stepped portion 221 and a second stepped portion 222 that are symmetrical in the width direction of the radial adjustment hole 31. The first stepped portion 221 axially abuts against the top surface of the limiting ring 3, and the second stepped portion 222 axially abuts against the bottom wall of the rotating slot 36. The second stepped portion 222 forms a rotating locking portion, and its side wall forms a limiting surface 223, which is circumferentially limited and engaged with the side wall of the rotating slot 36 through the limiting surface 223.

[0066] The dimension of the clamp head 22 in the width direction of the radial adjustment hole 31 is greater than the dimension of the clamp head 22 in the length direction of the radial adjustment hole 31. The two sides of the clamp head 22 in the length direction of the radial adjustment hole 31 are arc-shaped and can match the inner wall of the connecting sleeve 1. For example, in this embodiment, the axial projection of the clamp head 22 is elliptical.

[0067] Compared to a circular chuck head 22 with an axial projection, designing the axial projection of the chuck head 22 as an ellipse allows for several advantages. First, a first step 221 and a second step 222 can be designed on both sides of the major axis of the ellipse to engage with the chuck head 22. This ensures sufficient axial contact area between the chuck head 22 and the limiting ring 3, providing adequate axial connection strength to meet practical requirements while achieving radial adjustment and circumferential limiting. Second, the chuck head 22 can move outward as much as possible along the minor axis of the ellipse, allowing the connecting rod 2 a larger range of motion within the radial adjustment hole 31. This enhances the adjustment adaptability and achieves a better balance between axial connection strength and radial adjustment range, avoiding situations where axial connection strength is high but radial adjustment range is low, or vice versa.

[0068] In actual operation, when operating connecting rod 2, the internal structure of connecting sleeve 1 may not be observable. Furthermore, the positions of connecting sleeve 1, connecting rod 2, and limiting ring 3 are not fixed before connection. To ensure proper engagement between the locking head 22 of connecting rod 2 and the rotating groove 36 of limiting ring 3, a misalignment prevention design is implemented. Specifically, let the width of rotating groove 36 be L1, the length of locking head 22 along its major axis be L2, and the length along its minor axis be L3. Therefore, L2 > L3 > L1. With this design, the locking head 22 of connecting rod 2 can only be positioned... Figure 3 The correct orientation is shown for inserting the rotating slot 36, without being relative to... Figure 3 After rotating 90°, the connector is inserted into the rotating slot 36, ensuring that there will be no assembly errors even when operating blindly, and ensuring that the connector can be installed in the correct manner.

[0069] In addition, the connector also has a locking nut 4 that is fitted onto the rod body 21 of the connecting rod 2 and screwed onto the rod body 21. The locking nut 4 abuts against the connecting sleeve 1 to lock and fix one end of the connecting sleeve 1 to the connecting rod 2, so that the contact between the connecting sleeve 1, the connecting rod 2 and the limiting ring 3 is tighter, thereby improving the pull-out and tensile strength of the connector.

[0070] Please refer to this as well. Figure 8 , Figure 9 , Figure 8 This is a schematic diagram illustrating the operation of rotating the adjusting ring by rotating the connecting rod; Figure 9 for Figure 8 A schematic diagram showing how the connecting rod drives the adjusting ring to rotate and revolve.

[0071] In actual use, because the limiting ring is designed with a rotating groove, the locking head can slide and engage with the rotating groove along the length of the radial adjustment hole, and at the same time, it can engage with the rotating groove when the connecting rod rotates around its own axis, thereby driving the limiting ring to rotate relative to the connecting sleeve, rotating the adjusting ring to a suitable position, so that the direction of its radial adjustment hole is consistent with the misalignment or skew direction of the two rods to be connected, thereby realizing the docking of the two rods to be connected.

[0072] Since the limiting ring is driven to rotate by rotating the connecting rod, if the central axis O2 of the connecting rod coincides with the central axis O1 of the connecting sleeve (which is less likely), the limiting ring can be driven to rotate synchronously around the central axis of the connecting sleeve. If the central axis O2 of the connecting rod deviates from the central axis O1 of the connecting sleeve (which is more likely), the connecting rod can drive the limiting ring to rotate around the central axis O1 of the connecting sleeve. While rotating around its own central axis O2, the connecting rod can also revolve around the central axis O1 of the connecting sleeve.

[0073] Compared to using a connecting rod to move the limit ring, the entire rotation process is smooth and unobstructed. With hand movements, the limit ring can be rotated at a large angle or at a small angle via the connecting rod. There will be no under-rotation or over-rotation. The installation is flexible and easy to operate, and the limit ring can be quickly adjusted to the accurate position. This significantly reduces the difficulty of connection operations, greatly improves connection efficiency, and meets the timeliness requirements of on-site construction.

[0074] Please refer to Figures 10 to 13 , Figure 10 This is a structural schematic diagram of a mechanical connector for construction provided in the second embodiment of the present utility model; Figure 11 for Figure 10 The isometric view of the limiting ring shown; Figure 12 for Figure 11 A cross-sectional view of the limiting ring shown; Figure 13 for Figure 10 The diagram shows the structure of the locking nut.

[0075] As shown in the figure, the difference between this embodiment and the first embodiment is that:

[0076] The through hole 12 of the connecting sleeve 1 is a straight through hole, the receiving cavity 11 is provided with a non-detachment stop surface 111, and the outer wall of the limiting ring 3 is provided with a snap-fit ​​surface 32 that abuts against the non-detachment stop surface 111. The non-detachment stop surface 111 and the snap-fit ​​surface 32 are locally spherical surfaces (or conical surfaces) that can fit together.

[0077] The limiting ring 3 and the connecting sleeve 1 abut against each other through a local spherical surface, which can effectively prevent the limiting ring 3 from coming off the connecting sleeve 1 and ensure the axial connection strength of the two.

[0078] Furthermore, the end of the connecting sleeve 1 that extends out of the rod body 21 is a partially spherical surface, and the locking nut 4 is provided with a ball cup part 41 that can match the partially spherical surface of the connecting sleeve 1, so as to better apply the locking force to the connecting sleeve 1 and make the connecting sleeve 1 bear force evenly.

[0079] In this embodiment, the parts that are the same as in Embodiment 1 are given the same reference numerals, and the same text descriptions are omitted.

[0080] Please refer to Figure 14 , Figure 15 , Figure 14 An exploded view of the mechanical connector for construction provided in the third embodiment of this utility model; Figure 15 for Figure 14 The isometric view of the limiting ring shown.

[0081] As shown in the figure, the difference between this embodiment and the first embodiment is that the radial adjustment hole 31 is in an eccentric position on the limiting ring 3, that is, the center of the position adjustment hole 31 is not on the vertical central axis of the limiting ring 3, and there is a certain distance between them.

[0082] Because the area occupied by the radial adjustment hole 31 is reduced, this structure can increase the axial engagement area between the clamping head 22 and the limiting ring 3, thereby further improving the axial connection strength between the two. At the same time, the adjustment range of the connecting rod 2 in the radial adjustment hole 31 is mainly concentrated in the area far from the center. Therefore, it is more suitable for docking scenarios with large errors or deviations.

[0083] In use, if the operator visually determines that the error or deviation of the connecting rod is large, the connector of this embodiment can be used directly for docking, thereby saving operation time.

[0084] In this embodiment, the parts that are the same as in Embodiment 1 are given the same reference numerals, and the same text descriptions are omitted.

[0085] Please refer to Figures 16 to 18 , Figure 16 This is a structural schematic diagram of the mechanical connector for construction provided in the fourth embodiment of the present utility model; Figure 17 for Figure 16 The isometric view of the limiting ring shown; Figure 18 for Figure 16 The isometric view of the connecting rod shown.

[0086] As shown in the figure, the difference between this embodiment and the first embodiment is that:

[0087] The rotating slot 36 and the radial adjustment hole 31 are spaced apart. The rotating slot 36 is a U-shaped slot with the opening facing upward and is located on both sides of the upper end of the radial adjustment hole 31. Its extension direction is consistent with the length direction of the radial adjustment hole 31. Two protrusions 224 are symmetrically provided on the axial abutment surfaces on both sides of the clamp head 22. The protrusions 224 form a rotating clamping part, which is embedded in the rotating slot 36 to restrict the circumferential rotational freedom of the clamp head 22 relative to the limiting ring 3.

[0088] When the connecting rod 2 moves along the radial adjustment hole 31, the protrusion 224 can slide in the rotating slot 36. When the connecting rod 2 rotates, the clamp head 22 can drive the limiting ring 3 to rotate together through the protrusion 224, thereby achieving the purpose of adjusting the limiting ring 3.

[0089] Of course, there can be only one rotating slot 36, located on one side of the upper end of the radial adjustment hole 31, which can also achieve the purpose of this utility model.

[0090] In this embodiment, the parts that are the same as in Embodiment 1 are given the same reference numerals, and the same text descriptions are omitted.

[0091] Please refer to Figures 19 to 21 , Figure 19 This is a structural schematic diagram of a mechanical connector for construction provided in the fifth embodiment of the present utility model; Figure 20 for Figure 19 The isometric view of the limiting ring shown; Figure 21 for Figure 19 The isometric view of the connecting rod shown.

[0092] As shown in the figure, the difference between this embodiment and the first embodiment is that:

[0093] The rotating slot 36 and the radial adjustment hole 31 are spaced apart. The rotating slot 36 is an "L"-shaped slot with only one side wall and is located on both sides of the upper end of the radial adjustment hole 31. Its extension direction is consistent with the length direction of the radial adjustment hole 31. Two protrusions 224 are symmetrically provided on the axial abutment surfaces on both sides of the clamp head 22. The protrusions 224 form a rotating clamping part, which is embedded in the rotating slot 36 to restrict the circumferential rotational freedom of the clamp head 22 relative to the limiting ring 3.

[0094] When the connecting rod 2 moves along the radial adjustment hole 31, the protrusion 224 can slide along the rotating slot 36. When the connecting rod 2 rotates, the clamp head 22 can drive the limiting ring 3 to rotate together through the protrusion 224, thereby achieving the purpose of adjusting the limiting ring 3.

[0095] Of course, there can be only one rotating slot 36, located on one side of the upper end of the radial adjustment hole 31, which can also achieve the purpose of this utility model.

[0096] In this embodiment, the parts that are the same as in Embodiment 1 are given the same reference numerals, and the same text descriptions are omitted.

[0097] Please continue to refer to this. Figure 22 , Figure 23 , Figure 22 A schematic diagram of a structure for connecting the first member of a first precast component and the second member of a second precast component using a mechanical connector for construction according to the first embodiment; Figure 23 for Figure 22 The image shows an isometric view of the two sets of mechanical connectors used in construction coming together.

[0098] The first member 101 of the first precast component 100 and the second member 201 of the second precast component 200 are connected using the building mechanical connector of the first embodiment described above, including:

[0099] Assembly steps of the connector: Place the limiting ring 3 in the receiving cavity 11 of the connecting sleeve 1, the locking head 22 of the connecting rod 2 abuts against the limiting ring 3, and the rod body 21 of the connecting rod 2 extends out of the position adjustment hole 31 and the through hole 12. Assemble the connecting sleeve 1, connecting rod 2 and limiting ring 3 of the two sets of connectors into a whole.

[0100] Connection steps for two sets of connectors: Connect the other ends of the connecting sleeves 1 of the two sets of connectors directly. For example, one connecting sleeve 1 has an external thread and the other connecting sleeve 1 has an internal thread. The two connecting sleeves 1 are threaded together.

[0101] One of the connecting parts is connected to the first rod 101 in the following steps: the limiting ring 3 and the connecting rod 2 are rotated together relative to the connecting sleeve 1 by a predetermined angle, and the radial position of the connecting rod 2 in the position adjustment hole 31 is adjusted so that the other end of the rod body 21 of the connecting rod 2 is directly or indirectly connected to the first rod 101.

[0102] The other connecting member is connected to the second rod 201 by rotating the limiting ring 3 and the connecting rod 2 together relative to the connecting sleeve 1 by a predetermined angle, adjusting the radial position of the connecting rod 2 in the position adjustment hole 13, so that the other end of the rod body 21 of the connecting rod 2 is directly or indirectly connected to the second rod 201.

[0103] With the locking nut 4 present, in the connecting component assembly step, the locking nut 4 is fitted onto the rod 21 from the other end of the rod. The prefabricated component splicing method also includes a locking step following the steps of connecting one connector to the first rod 101 and the other connector to the second rod 201, by tightening the locking nut 4 until it abuts against one end of the connecting sleeve 1, causing the clamp 22 to abut against the limiting ring 3. It also includes a filling and reinforcement step following the locking step; filling and reinforcement material is applied to the connection portion between the first prefabricated component 100 and the second prefabricated component 200, i.e., covering the mechanical connector.

[0104] In another embodiment, the mechanical connectors used in construction as described in the second embodiment can be used for docking. Apart from the different structures of the connectors, the connecting sleeves 1 of the two sets of connecting components are connected by an intermediate connector 5. For example, the intermediate connector 5 is a double-threaded sleeve, with both ends threadedly connected to the two connecting sleeves 1. The specific structure after connection is as follows: Figure 24 , Figure 25 As shown.

[0105] In another embodiment, the mechanical connectors for construction described in the third embodiment can be used for docking. One set of connectors has external threads on its connecting sleeves 1, and the other set has internal threads on its connecting sleeves 1. The two connecting sleeves 1 are threaded together, and the specific structure after connection is as follows: Figure 26 , Figure 27 As shown.

[0106] The radial position of the connecting rod 2 in the two sets of connectors in the radial adjustment hole 31 can be adjusted independently to improve the radial deviation connection range applicable to the mechanical connector, which is suitable for connecting two rods with a large radial deviation range.

[0107] Of course, the structures of the two sets of connectors can be basically the same or completely the same, or the structures of the two sets of connectors can be different. For example, one set of connectors can be the connector assembly shown in the first embodiment, and the other set of connectors can be the connector assembly shown in the second embodiment, or one set of connectors can be the connector assembly shown in the second embodiment, and the other set of connectors can be the connector assembly shown in the third embodiment, and so on.

[0108] During installation, if the total length of the mechanical connector does not match the distance between the first rod 101 and the second rod 201, the connecting sleeve 1 or the intermediate connector 5 can be screwed in or out by a certain distance to change the total length of the mechanical connector.

[0109] It should be noted that the other end of the connecting sleeve 1 is provided with a threaded portion 16 or a snap-fit ​​portion to facilitate the connection of the connecting sleeve 1 with the rod, intermediate connecting member 5, or another connecting sleeve 1 or connecting rod 2. The threaded portion can be an internal threaded hole or an external thread. The snap-fit ​​portion has a snap-fit ​​hole inside for the rod or intermediate connecting member to be inserted. The snap-fit ​​portion can be a radially elastic card assembly or an integrated elastic card sleeve, etc. The connecting sleeve 1 and the rod can be connected by snap-fit, screw, pin, grouting, or welding. For example, the threaded portion of the connecting sleeve 1 is screwed to the rod, or the connecting sleeve 1 is indirectly connected to the rod body through an intermediate connecting component. The intermediate connecting component can be an adapter, one end of which is screwed, snap-fit, pinned, welded, or grouted to the connecting sleeve, and the other end of which is screwed, snap-fit, pinned, welded, or grouted to the rod, etc.

[0110] The other end of the connecting rod 2 is provided with a threaded part 211 or a plug-in part, so that the connecting rod 2 can be connected to the rod, the connecting sleeve, the intermediate connecting part 5, or another connecting rod 2. The threaded part 211 can be an internal thread or an external thread. The plug-in part can be a reducing plug or a plug with an annular groove on its outer peripheral wall, etc. The other end of the connecting rod 2 can be directly connected to the rod or indirectly connected through an intermediate connecting part. For example, the threaded part of the other end of the connecting rod 2 is screwed to the rod, or the intermediate connecting part is a connecting nut 6, with both ends of the connecting nut 6 screwed to the rod and the connecting rod 2 respectively. To make the connection between the connecting rod 2 and the connecting nut 6 more secure, a locking nut 7 is sleeved on and screwed onto the rod body 21, and the locking nut 7 abuts against the connecting nut 6. Alternatively, the intermediate connecting component can be a receiving sleeve, with a snap-fit ​​part that can be radially elastically stretched and expanded at one end. The snap-fit ​​part can be a separate card assembly or an integrated card cylinder, etc. The insertion part of the connecting rod 2 is inserted into the snap-fit ​​part to form a snap-fit ​​with the snap-fit ​​part. The rod is snap-fitted, screwed, welded, grouted, or pinned to the receiving sleeve, etc. Of course, in addition to snap-fitting, the connecting rod 2 and the receiving sleeve can also be connected by grouted connection, welding, or pinning.

[0111] The two connecting sleeves 1 can also be connected by means other than screwing, such as snap-fitting, grouting, welding, or bonding. For example, an adapter rod can be used instead of a double-ended screw or double-ended nut. The two ends of the adapter rod are snap-fitted, grouted, welded, or bonded to the corresponding two connecting sleeves 1. Taking snap-fitting as an example, the connecting sleeve 1 is provided with a snap-fitting part. The snap-fitting part has a snap-fitting hole for inserting the adapter rod. The snap-fitting part can be a radially elastic card assembly or an integrated elastic card cylinder, etc. The adapter rod is inserted into the snap-fitting hole of the snap-fitting part and forms a snap-fit ​​with the snap-fitting part.

[0112] To connect the two connecting components, the other ends of the rod bodies 21 of the two connecting rods 2 can be directly connected or connected through an intermediate connector 5, and the other ends of the two connecting sleeves 1 can be connected to the two rods respectively. The intermediate connector 5 can be a double-ended screw or a double-ended nut, and the two connecting rods 2 can be indirectly connected through the double-ended screw or double-ended nut. Alternatively, one of the rod bodies 21 of the two connecting rods 2 can be provided with an external thread, and the other can be provided with an internal thread that mates with the external thread. Alternatively, the two connecting rods 2 can also be connected by means other than screwing, such as by snap-fitting or grouting. For example, a sleeve can be used instead of a double-ended screw or double-ended nut. For example, the sleeve can be provided with a snap-fitting part that can be radially elastically stretched and expanded to snap-fit ​​the insertion part of the rod body 21. Alternatively, the sleeve and the rod body 21 can be connected by grouting. Alternatively, without a sleeve, the other ends of the rod bodies 21 of the two connecting rods 2 can be directly welded or bound together or connected by a hoop.

[0113] To connect the two connecting components, the other end of the rod body 21 of the connecting rod 2 of one connecting component can be directly connected to the other end of the connecting sleeve 1 of the other connecting component, or connected through an intermediate connector 5. The connecting sleeve 1 of one connecting component and the other end of the connecting rod 2 of the other connecting component are respectively connected to two rods. The connecting sleeve 1 and the rod body 21 are connected by screwing, snapping, grouting, pinning, welding, or clamping, etc. The intermediate connector 5 can be an adapter sleeve or an adapter rod. One end of the adapter sleeve or adapter rod is screwed, snapped, grouted, pinned, or welded to the other end of the rod body 21, etc., and the other end of the adapter sleeve or adapter rod is screwed, snapped, grouted, pinned, or welded to the other end of the connecting sleeve 1, etc. The other end of the rod 21 is directly connected to the connecting sleeve 1. This can be achieved by either the rod 21 or the connecting sleeve 1 having an internal threaded hole, and the other having an external thread that mates with the internal threaded hole. Alternatively, the end of the rod 21 furthest from the clamp 22 can form a nut with an internal thread, which is then screwed onto the external thread of the connecting sleeve 1. The rod 21 and the connecting sleeve 1 can be connected in ways other than screwing. These connections can be made by snap-fitting, bonding, grouting, or welding. Specifically, the connecting sleeve 1 has a snap-fit ​​part, which can be a card assembly capable of radial elastic contraction and expansion, or an integrated clamping sleeve. The other end of the rod 21 is inserted into the connecting sleeve 1 and snaps into the snap-fit ​​part. Alternatively, the other end of the rod 21 is inserted into the connecting sleeve 1, and grout is injected into the connecting sleeve 1 to fill the gap between the connecting sleeve 1 and the rod 21.

[0114] The mechanical connectors for construction provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A mechanical connector for construction, characterized in that, The assembly includes a connecting sleeve (1), a connecting rod (2), and a limiting ring (3); the connecting sleeve (1) has a receiving cavity (11) inside, and one end of the connecting sleeve (1) has a through hole (12) communicating with the receiving cavity (11); the connecting rod (2) passes through the connecting sleeve (1), and the connecting rod (2) includes a rod body (21) extending out of the through hole (12) and a clamp (22) located at one end of the rod body (21); the limiting ring (3) is at least partially located in the receiving cavity (11) and is located between the connecting sleeve (1) and the connecting rod (2). Between the connecting rods (2), the clamp (22) abuts against the limiting ring (3), the limiting ring (3) is provided with a radial adjustment hole (31), the connecting rod (2) can move along the radial adjustment hole (31); the limiting ring (3) is provided with a rotating groove (36), the clamp (22) and the rotating groove (36) slide together along the length direction of the radial adjustment hole (31), and the clamp (22) and the rotating groove (36) stop together in the rotation direction, so as to drive the limiting ring (3) to rotate relative to the connecting sleeve (1).

2. The mechanical connector for construction according to claim 1, characterized in that, The rotating slot (36) is located at the upper end of the radial adjustment hole (31), and its extension direction is consistent with the length direction of the radial adjustment hole (31). The radial adjustment hole (31) extends downward from the bottom wall of the rotating slot (36) through the bottom surface of the limiting ring (3). The card head (22) is provided with a rotating snap-fit ​​part, which is embedded in the rotating slot (36) to restrict the circumferential rotational freedom of the card head (22) relative to the limiting ring (3).

3. The mechanical connector for construction according to claim 1, characterized in that, The rotating slot is located on one or both sides of the upper end of the radial adjustment hole (31), and its extension direction is consistent with the length direction of the radial adjustment hole (31); the card head (22) is provided with a rotating snap-fit ​​part, which is embedded in the rotating slot (36) to restrict the circumferential rotational freedom of the card head (22) relative to the limiting ring (3).

4. The mechanical connector for construction according to claim 2, characterized in that, The rotating snap-fit ​​portion of the snap-fit ​​head (22) is provided with a limiting surface (223), which is circumferentially limited and matched with the side wall of the rotating snap-fit ​​groove (36).

5. The mechanical connector for construction according to claim 4, characterized in that, The locking head (22) includes a first step portion (221) and a second step portion (222). The first step portion (221) axially abuts against the top surface of the limiting ring (3). The rotating locking portion includes the second step portion (222). The second step portion (222) axially abuts against the bottom wall of the rotating locking groove (36). The side wall of the second step portion (222) forms the limiting surface (223).

6. The mechanical connector for construction according to claim 5, characterized in that, The clip (22) is provided with a first step portion (221) and a second step portion (222) symmetrical in the width direction of the radial adjustment hole (31).

7. The mechanical connector for construction according to claim 3, characterized in that, The rotating engagement portion of the card head (22) includes a protrusion (224) that is inserted into the rotating slot (36) from the axial abutment surface of the card head (22).

8. The mechanical connector for construction according to claim 7, characterized in that, The clip (22) is provided with a symmetrical protrusion (224) in the width direction of the radial adjustment hole (31).

9. The mechanical connector for construction according to claim 8, characterized in that, The rotating slot (36) includes a "U"-shaped slot with an upward opening or an "L"-shaped slot with only one sidewall.

10. The mechanical connector for construction according to claim 1, characterized in that, The receiving cavity (11) is provided with a detachment stop surface (111), and the outer wall of the limiting ring (3) is provided with a snap-fit ​​surface (32) that abuts against the detachment stop surface (111). The detachment stop surface (111) and the snap-fit ​​surface (32) are conical surfaces or partially spherical surfaces.

11. The mechanical connector for construction according to claim 1, characterized in that, An axial stop (13) is formed between the receiving cavity (11) and the through hole (12) to prevent the limiting ring (3) from disengaging from the connecting sleeve (1). The limiting ring (3) includes a first cylindrical section (3a) received in the receiving cavity (11) and a second cylindrical section (3b) received in the through hole (12). A stepped surface (33) is formed between the outer wall of the first cylindrical section (3a) and the outer wall of the second cylindrical section (3b).

12. The mechanical connector for construction according to claim 11, characterized in that, The inner diameter of the through hole (12) gradually decreases, and the shape of the second cylindrical section (3b) is adapted to the through hole (12).

13. The mechanical connector for construction according to claim 1, characterized in that, It also includes a rod body (21) fitted onto the connecting rod (2) and a locking nut (4) screwed onto the rod body (21), the locking nut (4) abutting against the connecting sleeve (1) to lock and fix one end of the connecting sleeve (1) to the connecting rod (2).

14. The mechanical connector for construction according to claim 13, characterized in that, The end of the connecting sleeve (1) extending out of the rod body (21) is a partial spherical surface, and the locking nut (4) is provided with a ball cup (41) that can match the partial spherical surface of the connecting sleeve (1).

15. The mechanical connector for construction according to claim 1, characterized in that, The radial adjustment hole (31) is located on the eccentric position of the limiting ring (3).

16. The mechanical connector for construction according to claim 1, characterized in that, The two ends of the rotating slot (36) pass through the limiting ring (3).

17. The mechanical connector for construction according to any one of claims 1 to 16, characterized in that, The size of the clip (22) in the width direction of the radial adjustment hole (31) is greater than the size of the clip (22) in the length direction of the radial adjustment hole (31).

18. The mechanical connector for construction according to claim 17, characterized in that, The two sides of the clip (22) in the length direction of the radial adjustment hole (31) are arc-shaped so as to match the inner wall of the connecting sleeve (1).

19. The mechanical connector for construction according to claim 18, characterized in that, The axial projection of the card head (22) is elliptical.

20. The mechanical connector for construction according to claim 19, characterized in that, it is provided with The width of the rotating slot (36) is L1, the length of the card head (22) in the long axis direction is L2, and the length of the card head (22) in the short axis direction is L3, then L2 > L3 > L1.

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