Joint clamping device and joint clamping system

Abstract

The utility model discloses an abutted seam clamping device and an abutted seam clamping system. The abutted seam clamping device comprises a clamping assembly and a lead screw assembly. The clamping assembly comprises a fixed rod, at least two movable rods and fasteners, the two movable rods are rotationally connected with the two ends of the fixed rod correspondingly, and the two fasteners are arranged at the joints of the fixed rod and the movable rods correspondingly and used for locking relative rotation between the movable rods and the fixed rod; the lead screw assembly comprises an adjusting rod, a screw and a nut, one end of the screw is fixedly connected with the adjusting rod, and the other end of the screw penetrates through the fixing rod to be in threaded connection with the nut. According to the device, the adjustability of the clamping force is achieved through the lead screw assembly so as to adapt to an actually existing abutted seam gap, and therefore the adaptability of the device to different installation precision is improved. And by adjusting the angle between the movable rod and the fixed rod, the requirement for the width of the supporting template is relatively reduced. According to the device, larger installation tolerance is allowed, and installation convenience and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete construction technology, specifically to a joint clamping device and a joint clamping system. Background Technology

[0002] In prefabricated concrete structures, the treatment of the joints between composite slabs is crucial to achieving structural integrity and ensuring the quality of cast-in-place layer pouring.

[0003] However, existing technologies have significant problems: most devices relying on rigid connections (such as screws and embedded sleeves) cannot accommodate the 5mm installation error allowed by the "Technical Specification for Prefabricated Concrete Structures," requiring manual adjustment with shims, which is inefficient and prone to grout leakage. Existing seals mostly use static grout-stopping plates or rubber strips (such as CN110847413A), which cannot provide dynamic clamping force. Vibration during concrete pouring can easily cause the seals to shift, leading to grout leakage and requiring secondary sealing. Some support devices (such as arched corner frames) have high requirements for the position of embedded parts. Pre-embedded deviations (such as 10mm) often prevent the device from being installed or require on-site modification, increasing construction difficulty. Traditional bolt clamping is prone to damaging the edges of composite slabs (especially thin slabs) due to excessive force, while insufficient force leads to grout leakage, making it difficult to guarantee construction quality.

[0004] Therefore, existing technologies cannot meet the needs for efficient, reliable, and convenient splicing of composite panels and urgently need improvement. Utility Model Content

[0005] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a seam clamping device and seam clamping system to solve the technical problems of complex seam processing operations and poor results in the prior art.

[0006] To achieve the above-mentioned technical objectives, the present application adopts the following technical solution:

[0007] In one aspect, this application provides a seam clamping device, including a clamping assembly and a lead screw assembly.

[0008] The clamping assembly includes a fixed rod, at least two movable rods, and fasteners. The two movable rods are rotatably connected to both ends of the fixed rod, and the two fasteners are respectively disposed at the connection between the fixed rod and the movable rods to lock the relative rotation between the movable rods and the fixed rod.

[0009] The lead screw assembly includes an adjusting rod, a screw, and a nut. One end of the screw is fixedly connected to the adjusting rod, and the other end of the screw passes through the fixing rod and is threadedly connected to the nut.

[0010] In some embodiments of this application, the fastener includes a fastening bolt, one end of each movable rod is provided with a first screw hole, and each end of the fixed rod is provided with a second screw hole, and the fastening bolt passes through the first screw hole and the second screw hole.

[0011] In some embodiments of this application, the fastener further includes a fastening nut, which is sleeved on the outside of the fastening bolt and threadedly connected to the fastening bolt.

[0012] In some embodiments of this application, the extension direction of the fixed rod is perpendicular to the extension direction of the screw, and the angle between any movable rod and the fixed rod is an obtuse angle.

[0013] In some embodiments of this application, a buffer element is also included, the buffer element comprising a sleeve and a spring, the spring being sleeved on the outside of the screw and the sleeve being sleeved on the outside of the spring.

[0014] In some embodiments of this application, the sleeve, the spring, and the screw are coaxially arranged.

[0015] In some embodiments of this application, the extension direction of the adjusting rod is perpendicular to the extension direction of the screw.

[0016] Secondly, this application also provides a seam clamping system, including at least two precast composite slabs, a support template, and a seam clamping device as described in any embodiment of the first aspect, wherein two movable rods of the seam clamping device abut against the lower surfaces of both ends of the support template, and the upper surfaces of both ends of the support template abut against the two precast composite slabs.

[0017] In some embodiments of this application, the support template includes a base plate and two side plates, the two side plates being perpendicularly connected to both ends of the base plate to form right-angle grooves, and the movable rod being embedded in the right-angle grooves.

[0018] In some embodiments of this application, a concrete pad and supporting reinforcing bars are also included. The concrete pad is located on the supporting template and between the joint clamping device and the precast composite slab, and the supporting reinforcing bars are located between the concrete pad and the adjusting rod.

[0019] Compared with the prior art, the beneficial technical effects of the technical solution provided in this application include:

[0020] This application achieves adjustable clamping force through a screw assembly. The applied clamping force can be precisely controlled by rotating the adjusting rod to adapt to existing joint gaps, thereby improving the device's adaptability to different installation precisions and reducing the tediousness of manual adjustments and the risk of grout leakage. The movable rod of the device is rotatably connected; by adjusting the angle between the movable rod and the fixed rod, the overall width of the clamping assembly can be adjusted, relatively reducing the width requirements of the supporting formwork. This device allows for greater installation tolerance, reducing situations where installation is impossible or requires on-site modification, and improving installation convenience and efficiency. Because the clamping force is adjustable, the operator can apply appropriate pressure as needed, helping to protect the edges of the components and ensuring construction quality. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in the embodiments will be briefly described below:

[0022] Figure 1 This is a schematic diagram of the structure of a seam clamping device provided in an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of a seam clamping system provided in an embodiment of this application.

[0024] Figure label:

[0025] Clamping assembly 1, fixed rod 11, movable rod 12, fastener 13, lead screw assembly 2, adjusting rod 21, screw 22, nut 23, buffer 3;

[0026] 4. Precast composite slab, 5. Supporting formwork, 6. Concrete pad, 7. Supporting steel bars. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] Those skilled in the art will understand that, in this specification, the term "comprising" is an open-ended expression, meaning that the stated feature is present but other features are excluded. Directional terms such as "upper," "lower," "left," and "right" refer to exemplary directions based on the accompanying drawings. Features specified as "first" or "second" implicitly include one or more of that feature. Singular expressions can also be used in plural forms. "Multiple" means two or more. The terms "installed," "connected," and "linked" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection via an intermediate medium, and it can be a connection within two components. Furthermore, "linked" can include wireless connections.

[0029] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a seam clamping device and seam clamping system to solve the technical problems of complex seam processing operations and poor results in the prior art.

[0030] To achieve the above-mentioned technical objectives, the present application adopts the following technical solution:

[0031] like Figure 1 As shown. In a first aspect, this application provides a seam clamping device, including a clamping assembly 1 and a lead screw assembly 2.

[0032] The clamping assembly 1 includes a fixed rod 11, at least two movable rods 12, and fasteners 13. The two movable rods 12 are rotatably connected to both ends of the fixed rod 11, and the two fasteners 13 are respectively disposed at the connection between the fixed rod 11 and the movable rods 12 to lock the relative rotation between the movable rods 12 and the fixed rod 11.

[0033] The lead screw assembly 2 includes an adjusting rod 21, a screw 22 and a nut 23. One end of the screw 22 is fixedly connected to the adjusting rod 21, and the other end of the screw 22 passes through the fixing rod 11 and is threadedly connected to the nut 23.

[0034] This application achieves adjustable clamping force through the screw assembly 2. The applied clamping force can be precisely controlled by rotating the adjusting rod 21 to adapt to actual joint gaps, thereby improving the device's adaptability to different installation precisions and reducing the tediousness of manual adjustments and the risk of grout leakage. The movable rod 12 of the device is rotatably connected. By adjusting the angle between the movable rod 12 and the fixed rod 11, the overall width of the clamping assembly 1 can be adjusted, relatively reducing the width requirement for the supporting template 5. This device allows for greater installation tolerance, reducing situations where installation is impossible or requires on-site modification, and improving installation convenience and efficiency. Because the clamping force is adjustable, the operator can apply appropriate pressure as needed, which helps protect the edges of the components and ensures construction quality.

[0035] In some embodiments of this application, the fastener 13 includes a fastening bolt, one end of each of the movable rods 12 is provided with a first screw hole, and each end of the fixed rod 11 is provided with a second screw hole, and the fastening bolt passes through the first screw hole and the second screw hole.

[0036] By utilizing the rotatable connection between the movable rod 12 and the fixed rod 11, the opening width of the clamping assembly 1 can be expanded or reduced as needed, allowing it to initially adapt to the dimensions of the components to be clamped (such as the edge of a composite slab or a formwork support). This device does not require precise matching of formwork supports of a specific width, reducing the installation accuracy requirements of the formwork system itself. Due to its self-adaptive capability, even if there are allowable errors in the installation of the composite slab, or slight deviations in the position of the embedded parts, the device is easier to install, greatly reducing situations where installation is impossible or on-site modifications are required.

[0037] In some embodiments of this application, the fastener 13 further includes a fastening nut 23, which is sleeved on the outside of the fastening bolt and threadedly connected to the fastening bolt.

[0038] Adjust the angle between the movable rod 12 and the fixed rod 11 as needed to accommodate different joint widths or installation errors. Pass the fastening bolt through the first threaded hole on the movable rod 12 and the second threaded hole on the fixed rod 11 to achieve initial positioning. Fit the fastening nut 23 onto the outside of the fastening bolt, and rotate the fastening nut 23 to move it along the bolt's thread. Through the tightening action of the threads, the movable rod 12 and the fixed rod 11 are securely connected together, ensuring that the movable rod 12 will not shift when clamping force is applied or when subjected to external force.

[0039] After the movable rod 12 is initially positioned by the bolt, the axial force is generated by rotating the adjusting rod 21 (lead screw assembly 2) and using the transmission action of the lead screw to further press the fixed rod 11 and the movable rod 12 against the component to be clamped, applying a precise and adjustable clamping force.

[0040] In some embodiments of this application, the extension direction of the fixed rod 11 is perpendicular to the extension direction of the screw 22, and the angle between any movable rod 12 and the fixed rod 11 is an obtuse angle.

[0041] When an axial force is applied by rotating the adjusting rod 21 (driving the screw 22), this force acts on the fixed rod 11, pushing (or pulling) the fixed rod 11 to move axially along the screw 22.

[0042] The vertical arrangement allows the driving force of the lead screw assembly 2 to act directly on the fixed rod 11, resulting in a relatively direct force flow path. The fixed rod 11 primarily bears the axial push / pull force from the lead screw and the reaction force from the movable rod 12, providing good bending and torsional stiffness along its length. The vertical arrangement helps to effectively convert the driving force of the lead screw into clamping force, reducing unnecessary bending moments.

[0043] The obtuse angle design makes the lever arm of the movable rod 12 relatively long when clamping, which helps to generate a larger clamping stroke and clamping force under the same axial force of the lead screw, thus improving clamping efficiency.

[0044] In some embodiments of this application, a buffer element is also included, which includes a sleeve and a spring, the spring being sleeved on the outside of the screw 22 and the sleeve being sleeved on the outside of the spring.

[0045] When the adjusting rod 21 is rotated, driving the nut 23 via the screw 22, the screw 22 moves relative to the sleeve. The spring, when compressed or stretched, provides a buffering and damping effect. This prevents sudden excessive clamping force or impact on the edges of the laminated plates.

[0046] When the device is subjected to external impact or vibration, the spring can absorb some of the energy, play a buffering and protective role, prevent the impact force from being directly transmitted to the fixed rod 11, avoid damage and prevent the tightened bolts of the fixed rod 11 from loosening.

[0047] The elastic deformation of the spring allows for a certain amount of deformation space when the clamping force reaches a preset value or when subjected to external impact. The sleeve serves to protect the spring, limit its deformation range, and may provide guidance.

[0048] In some embodiments of this application, the sleeve, the spring, and the screw 22 are coaxially arranged.

[0049] The coaxial arrangement ensures that the spring and sleeve maintain a stable relative position when the screw 22 rotates or moves axially. When the screw 22 rotates, the nut 23, which is connected by a thread, moves axially along the screw 22. This movement compresses or stretches the coaxially arranged spring.

[0050] Because the sleeve, spring, and screw 22 are coaxially arranged, the spring's buffering effect is more direct and precise, effectively absorbing and dispersing the impact force generated by the movement of screw 22, thus preventing damage to the laminated plate. The sleeve provides stable guidance for screw 22, ensuring smooth rotation and axial movement and reducing friction and wear. The sleeve effectively protects the spring from external impurities or physical damage, extending its service life.

[0051] In some embodiments of this application, the extension direction of the adjusting rod 21 is perpendicular to the extension direction of the screw 22.

[0052] The axial movement of the screw 22 is primarily used to achieve the main clamping or positioning functions, while the axial movement of the adjusting rod 21 is used to provide additional, independent adjustment functions. The screw 22 is responsible for providing the main, transmittable axial force to ensure the overall connection strength at the joints of the laminated panels. The adjusting rod 21 can be designed to apply a force perpendicular to the axis of the screw 22 or to make displacement adjustments via some mechanism (such as a lever).

[0053] In practical applications, when there is unevenness or slight misalignment in the joints of the laminated panels, the adjusting rod 21 can move along its axial direction, generating a force or displacement perpendicular to the axis of the screw 22 through the mechanism it is connected to. This force / displacement can compensate for deviations in the plane or in the direction perpendicular to the axis of the screw 22 that cannot be completely resolved by the axial force of the screw 22, enabling the device to better fit the uneven joints.

[0054] like Figure 2 As shown. In a second aspect, this application also provides a seam clamping system, including at least two prefabricated composite slabs 4, a support template 5, and a seam clamping device as described in any embodiment of the first aspect, wherein two movable rods 12 of the seam clamping device abut against the lower surfaces of both ends of the support template 5, and the upper surfaces of both ends of the support template 5 abut against the two prefabricated composite slabs 4.

[0055] Two precast composite slabs 4 are placed side by side on top of the supporting template 5, forming a joint that needs to be treated. The joint clamping device provided in this application is placed below the supporting template 5, so that its two movable rods 12 can contact both sides of the lower surface of the supporting template 5.

[0056] As needed, the angle of the movable rod 12 is changed by adjusting the joint clamping device to adapt to the width of the support template 5. Then, an upward axial force is applied to the fixed rod 11 by the adjusting rod 21. The fixed rod 11, through the movable rod 12, applies an upward supporting force to the lower surface of the support template 5. As the movable rod 12 moves and the lead screw is adjusted, the support template 5 is lifted upward, and its upper surface correspondingly presses against or abuts the lower surfaces of the two prefabricated composite slabs 4, making them fit tightly together. Using a buffer (spring), the device can automatically adapt to any unevenness and minor misalignment that may exist at the joint.

[0057] Finally, the joint clamping device firmly clamps the two precast composite slabs 4 together through the support template 5, forming a whole, providing stable and reliable support and boundary conditions for subsequent reinforcement laying and concrete pouring (forming the composite layer).

[0058] In some embodiments of this application, the support template 5 includes a base plate and two side plates, the two side plates being perpendicularly connected to both ends of the base plate to form right-angle grooves, and the movable rod 12 being embedded in the right-angle grooves.

[0059] The support template 5 consists of a horizontal base plate and two side plates that are vertically connected to its two ends, forming a downward-opening "U" or "concave" shaped structure (right-angle groove).

[0060] The two movable rods 12 of the seam clamping device are designed to fit into the right-angle slot. The shape and size of the movable rods 12 match the right-angle slot. When the movable rods 12 are fitted into the right-angle slot, one side (or bottom) contacts the base plate, and the other side (or end) contacts the corresponding side plate.

[0061] In some embodiments of this application, a concrete pad 6 and a supporting steel bar 7 are also included. The concrete pad 6 is located on the supporting template 5 and between the joint clamping device and the precast composite slab 4. The supporting steel bar 7 is located between the concrete pad 6 and the adjusting rod 21.

[0062] Once the appropriate clamping force is adjusted, the support formwork 5 is adjusted to the required height and level. Concrete spacers 6 and reinforcing bars are placed on the adjusted support formwork 5. The top of the supporting reinforcing bars 7 will contact the bottom of the adjusting rod 21. The main function of the concrete spacers 6 is to provide a solid, flat, and highly accurate reference surface. It transfers the supporting force of the support formwork 5 to the adjusting rod 21 above, fixing the final height position of the adjusting rod 21 and the support formwork 5, ensuring its stability and accuracy. This provides stable and reliable support and boundary conditions for subsequent concrete pouring. Cast-in-place concrete is applied to the upper surfaces of the two precast composite slabs 4 and fills the gaps between adjacent precast composite slabs 4.

[0063] Compared with the prior art, the beneficial technical effects of the technical solution provided in this application include:

[0064] This application achieves adjustable clamping force through the screw assembly 2. The applied clamping force can be precisely controlled by rotating the adjusting rod 21 to adapt to actual joint gaps, thereby improving the device's adaptability to different installation precisions and reducing the tediousness of manual adjustments and the risk of grout leakage. The movable rod 12 of the device is rotatably connected. By adjusting the angle between the movable rod 12 and the fixed rod 11, the overall width of the clamping assembly 1 can be adjusted, relatively reducing the width requirement for the supporting template 5. This device allows for greater installation tolerance, reducing situations where installation is impossible or requires on-site modification, and improving installation convenience and efficiency. Because the clamping force is adjustable, the operator can apply appropriate pressure as needed, which helps protect the edges of the components and ensures construction quality.

[0065] Those skilled in the art will understand that the steps, measures, and schemes in the various operations, methods, processes, and procedures discussed in this application can be alternated, modified, rearranged, decomposed, combined, or deleted.

[0066] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Any other corresponding changes and modifications made based on the technical concept of this application should be included within the scope of protection of the claims of this application.

Claims

1. A seam clamping device, characterized in that, include: A clamping assembly includes a fixed rod, at least two movable rods, and fasteners. The two movable rods are rotatably connected to both ends of the fixed rod, and the two fasteners are respectively disposed at the connection between the fixed rod and the movable rods to lock the relative rotation between the movable rods and the fixed rod. A lead screw assembly, comprising an adjusting rod, a screw, and a nut, wherein one end of the screw is fixedly connected to the adjusting rod, and the other end of the screw passes through the fixing rod and is threadedly connected to the nut.

2. The seam clamping device according to claim 1, characterized in that, The fastener includes a fastening bolt. One end of each movable rod has a first screw hole, and each end of the fixed rod has a second screw hole. The fastening bolt passes through the first screw hole and the second screw hole.

3. The seam clamping device according to claim 2, characterized in that, The fastener also includes a fastening nut, which is sleeved on the outside of the fastening bolt and threadedly connected to the fastening bolt.

4. The seam clamping device according to claim 1, characterized in that, The extension direction of the fixed rod is perpendicular to the extension direction of the screw, and the angle between any of the movable rods and the fixed rod is an obtuse angle.

5. The seam clamping device according to claim 1, characterized in that, It also includes a buffer component, which comprises a sleeve and a spring, the spring being sleeved on the outside of the screw and the sleeve being sleeved on the outside of the spring.

6. The seam clamping device according to claim 5, characterized in that, The sleeve, the spring, and the screw are arranged coaxially.

7. The seam clamping device according to claim 1, characterized in that, The extension direction of the adjusting rod is perpendicular to the extension direction of the screw.

8. A seam clamping system, characterized in that, It includes at least two precast composite slabs, a support template, and a joint clamping device as described in any one of claims 1 to 7, wherein the two movable rods of the joint clamping device abut against the lower surfaces of both ends of the support template, and the upper surfaces of both ends of the support template abut against the two precast composite slabs.

9. The seam clamping system according to claim 8, characterized in that, The support template includes a base plate and two side plates. The two side plates are perpendicularly connected to both ends of the base plate to form right-angle grooves, and the movable rod is embedded in the right-angle grooves.

10. The seam clamping system according to claim 8, characterized in that, It also includes concrete pads and supporting reinforcing bars. The concrete pads are located on the supporting template and between the joint clamping device and the precast composite slab. The supporting reinforcing bars are located between the concrete pads and the adjusting rod.

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