Plate connecting device with alignment function

Abstract

The utility model relates to the technical field of plate connecting devices, in particular to a plate connecting device with an alignment function, which comprises a bolt and a nut. The bolt comprises a head part, an alignment rod and a screw rod which are coaxially connected in sequence; the alignment rod is a positive cylinder, and the length of the alignment rod is greater than the thickness of a single plate to be connected; the edge of the cross section of the alignment rod is a cross section contour line, the cross section contour line is centrosymmetric, and the symmetric center is a point O; a point A, a point B and a point C are arranged on the cross section contour line, the point A and the point B are symmetrical about the point O, and the point C is located between the point A and the point B; the lengths of connecting lines from the point A to the point C and from the point B to the point C and the point O on the contour line of the cross section are gradually increased; two times of the length of the connecting line between the point C and the point O is slightly greater than the width of the connected waist-shaped hole; according to the utility model, the edges of the two sides in the width direction of the waist-shaped hole in the plate to be connected can be automatically aligned, so that the plate to be connected can be aligned and mounted without deflection.

Description

Technical Field

[0001] The utility model relates to the technical field of plate connecting devices, in particular to a plate connecting device with an alignment function. Background Art

[0002] In many fields, especially in the field of building formwork, it is necessary to use bolt and nut assemblies to align and connect at least two plates; the plates are provided with waist-shaped holes for the bolts to pass through, and the width of the waist-shaped holes is slightly larger than the outer diameter of the bolts; when connecting, it is necessary to first align the two side edges of the waist-shaped holes of the plates to be connected in the width direction, and then tighten the bolts to ensure that the plates to be connected will not deflect in the up and down directions; however, in the actual operation process, there are the following problems: 1. It is very difficult to align the two side edges of the waist-shaped holes of the plates to be connected in the width direction, which leads to low installation efficiency and easy installation deviation; and even if the alignment is good and the installation is good, it is easy to deflect by external force; 2. When installing or disassembling, two wrenches are required to connect the bolts and nuts respectively so that the bolts and nuts can rotate with each other to complete the installation or disassembly, which is not easy to operate. Utility Model Content

[0003] The main purpose of the present utility model is to provide a plate connection device with an alignment function, so as to solve the problems in the above-mentioned prior art that it is difficult to align the upper and lower edges of the two waist-shaped holes during the plate connection process, and even if they are aligned and installed, they are easily deflected by external forces, and two wrenches are required to connect the bolts and nuts respectively during installation or disassembly, which is not easy to operate.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a plate connection device with an alignment function, including a bolt and a nut; the bolt includes a head, an alignment rod, and a screw rod coaxially connected in sequence; the alignment rod is a regular cylinder, and the length of the alignment rod is greater than the thickness of a single plate to be connected; the edge of the cross section of the alignment rod is a cross section contour line, and the cross section contour line is centrally symmetrical, with the center of symmetry being point O; there are points A, B and C on the cross section contour line, and points A and B are symmetrical about point O, and point C is located between points A and B; the length of the line from point A to point C and from point B to point C and point O on the cross section contour line gradually increases; twice the length of the line between point C and point O is slightly greater than the width of the waist-shaped hole to be connected.

[0005] Furthermore, the portion of the cross-sectional contour line from point B to point C is an involute of a base circle with point O as the center.

[0006] Furthermore, the perpendicular distance between any point on the portion of the cross-sectional contour line from point A to point C and the perpendicular bisector of AB is less than or equal to the length of AO.

[0007] Furthermore, the portion of the cross-sectional contour line from point A to point C is a straight line.

[0008] Furthermore, the length of the line between point A and point B is greater than the minor diameter of the thread on the screw and less than or equal to the major diameter of the thread on the screw; this can ensure the strength of the bolt and does not affect the use range of the screw.

[0009] Furthermore, a first washer is coaxially fixedly connected to one side of the head close to the screw rod; by integrating the first washer and the bolt, there is no need to install the washer on site, which simplifies the operation steps and makes connection more convenient.

[0010] Furthermore, the nut is coaxially fixedly connected to a second washer, and the inner diameter of the second washer is larger than the maximum outer diameter of the alignment rod; the second washer and the nut are arranged as one body, and do not require on-site installation, and are easy to use; the inner diameter of the second washer is larger than the maximum outer diameter of the alignment rod, and when the indirect plate is relatively thin, the alignment rod can extend into the interior of the second washer, thereby increasing the range of use of the connecting device.

[0011] Furthermore, the inner hole of the second washer is a tapered hole, and the small end of the tapered hole faces the nut; by setting the tapered hole, the second washer can have a certain elasticity after the connection is tightened, making the connection device more secure and preventing it from falling off.

[0012] The beneficial effects of the utility model are:

[0013] By setting up an alignment rod, the curved surface on the side of the alignment rod can be used to automatically align the two side edges of the waist-shaped hole on the plate to be connected in the width direction, so that the plates to be connected can be installed in an aligned manner without deflection, thereby ensuring installation efficiency and installation accuracy; after alignment and installation, the alignment rod and the waist-shaped hole are tightly attached without gap, and will not deflect even when subjected to external force.

[0014] When installing or removing the alignment rod, the alignment rod will be able to clamp with the waist-shaped hole after rotating a certain angle. At this time, you only need to use a wrench to tighten the nut. There is no need to use two wrenches to connect the bolt and nut at the same time. The operation is more convenient and easy to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0016] Figure 1 Schematic diagram of the structure of the bolt in the embodiment;

[0017] Figure 2 is a schematic structural diagram of a cross-sectional profile in an embodiment;

[0018] Figure 3 Schematic diagram of the structure of the nut and the second washer in the embodiment;

[0019] Figure 4 is a schematic diagram of the cross-sectional structure of the second gasket in the embodiment;

[0020] Figure 5 Schematic diagram of the structure in which the alignment rod is located in the waist-shaped hole in the embodiment;

[0021] In the figure: 1, bolt; 2, nut; 101, head; 102, screw; 103, alignment rod; 103a, cross-sectional contour line; 104, first washer; 3, second washer; 4, waist-shaped hole. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] like Figures 1 to 3 As shown, according to an embodiment of the present invention, a plate connection device with an alignment function is provided, including a bolt 1 and a nut 2; the bolt 1 includes a head 101, an alignment rod 103, and a screw rod 102 coaxially connected in sequence; the alignment rod 103 is a regular cylinder, and the length of the alignment rod 103 is greater than the thickness of a single plate to be connected; the edge of the cross section of the alignment rod 103 is a cross section contour line 103a, and the cross section contour line 103a is centrally symmetrical, with the center of symmetry being point O; there are points A, B and C on the cross section contour line 103a, and points A and B are symmetrical about point O, and point C is located between points A and B; the length of the line from point A to point C and from point B to point C and point O on the cross section contour line 103a gradually increases; twice the length of the line between point C and point O is slightly greater than the width of the connected waist-shaped hole; specifically, twice the length of the line between point C and point O is 1-6 mm larger than the width of the connected waist-shaped hole.

[0024] like Figure 2 As shown, in some embodiments, the portion from point B to point C on the cross-sectional contour line 103a is an involute of a base circle with point O as the center.

[0025] like Figure 2 As shown, in some embodiments, the vertical distance between any point on the portion from point A to point C on the cross-sectional contour line 103a and the perpendicular bisector of AB is less than or equal to the length of AO; thereby making it easier to insert the alignment rod 103 into the waist-shaped hole 4 when it is initially placed therein, with less obstruction.

[0026] like Figure 2 As shown, in some embodiments, the portion of the cross-sectional contour line 103a from point A to point C is a straight line.

[0027] like Figure 2As shown, in some embodiments, the length of the line between point A and point B is greater than the minor diameter of the thread on the screw 102 and less than or equal to the major diameter of the thread on the screw 102; thereby ensuring the strength of the bolt 1 and not affecting the use range of the screw 102.

[0028] like Figure 1 As shown, in some embodiments, a first washer 104 is coaxially fixedly connected to one side of the head 101 close to the screw 102; by integrally arranging the first washer 104 and the bolt 1, there is no need to install the washer on site, which simplifies the operation steps and makes the connection more convenient.

[0029] like Figure 3 As shown, in some embodiments, the nut 2 is coaxially fixedly connected to the second washer 3, and the inner diameter of the second washer 3 is larger than the maximum outer diameter of the alignment rod 103; the second washer 3 and the nut 2 are integrally arranged, and do not require on-site installation, and are easy to use; the inner diameter of the second washer 3 is larger than the maximum outer diameter of the alignment rod 103, and when the plate is indirectly relatively thin, the alignment rod 103 can extend into the interior of the second washer 3, thereby increasing the scope of use of the connecting device.

[0030] like Figure 4 As shown, in some embodiments, the inner hole of the second washer 3 is a tapered hole 301, and the small end of the tapered hole 301 faces the nut 2; by setting the tapered hole, the second washer can have a certain elasticity after the connection is tightened, making the connection device more secure and preventing it from falling off.

[0031] The plate connection device with the alignment function of this embodiment can be used in the field of building formwork; it can also be used in the fields of steel structures, mechanical equipment, molds, models, etc.

[0032] like Figure 5 As shown, the working principle of the above embodiment is:

[0033] When installing the plate connecting device with an alignment function, the bolt 1 is inserted into the waist-shaped holes 4 of at least two plates to be connected, and the bolt 1 is rotated clockwise so that the curved surface of the edge of the alignment rod 103 contacts and clamps the waist-shaped hole 4; the edges on both sides of the waist-shaped holes 4 in the width direction of the at least two plates to be connected are automatically aligned; thereby, the plates to be connected can be installed in an aligned manner without deflection, thereby ensuring installation efficiency and installation accuracy; after alignment, the nut 2 is screwed onto the screw rod 102 to lock the plate connection to be connected; after alignment and installation, the alignment rod 103 and the waist-shaped hole 4 are tightly attached without gap, and will not deflect even after being subjected to external force.

[0034] When the plate connecting device with the alignment function is disassembled, the bolt 1 is rotated counterclockwise to disengage the curved surface of the edge of the alignment rod 103 from the waist-shaped hole 4.

[0035] When installing and disassembling the plate connection device with the alignment function, the alignment rod 103 will be able to clamp with the waist-shaped hole 4 after rotating a certain angle. At this time, you only need to use a wrench to tighten the nut 2, and there is no need to use two wrenches to connect the bolt 1 and the nut 2 at the same time. The operation is more convenient and it is easy to install and disassemble.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A plate connection device with an alignment function, comprising a bolt (1) and a nut (2); characterized in that: The bolt (1) comprises a head (101), an alignment rod (103), and a screw rod (102) which are coaxially connected in sequence; the alignment rod (103) is a regular cylinder, and the length of the alignment rod (103) is greater than the thickness of a single plate to be connected; the edge of the cross section of the alignment rod (103) is a cross section contour line (103a), and the cross section contour line (103a) is centrally symmetrical, with the center of symmetry being point O; the cross section contour line (103a) has point A, point B, and point C, and points A and B are symmetrical about point O, and point C is located between point A and point B; the length of the line from point A to point C and from point B to point C and point O on the cross section contour line (103a) gradually increases; and twice the length of the line between point C and point O is slightly greater than the width of the waist-shaped hole to be connected.

2. The plate connecting device with alignment function according to claim 1, characterized in that: The portion from point B to point C on the cross-sectional contour line (103a) is an involute of a base circle with point O as the center.

3. The plate connecting device with alignment function according to claim 2, characterized in that: The vertical distance between any point on the portion from point A to point C on the cross-sectional contour line (103a) and the perpendicular bisector of AB is less than or equal to the length of AO.

4. The plate connecting device with alignment function according to claim 3, characterized in that: The portion from point A to point C on the cross-sectional contour line (103a) is a straight line.

5. The plate connecting device with alignment function according to claim 1, characterized in that: The length of the line connecting point A and point B is greater than the minor diameter of the thread on the screw (102) and less than or equal to the major diameter of the thread on the screw (102).

6. The plate connecting device with alignment function according to claim 1, characterized in that: A first washer (104) is coaxially fixedly connected to one side of the head (101) close to the screw (102).

7. The plate connecting device with alignment function according to claim 1, characterized in that: The nut (2) is coaxially fixedly connected to a second washer (3), and the inner diameter of the second washer (3) is larger than the maximum outer diameter of the alignment rod (103).

8. The plate connecting device with alignment function according to claim 7, characterized in that: The inner hole of the second washer (3) is a tapered hole (301), and the small end of the tapered hole (301) faces the nut (2).

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