Method for aligning circular hole by using triple eccentric gasket

Abstract

The invention belongs to the field of concrete member installation, and particularly relates to a method for aligning a circular hole through a triple eccentric gasket. Comprising the following steps that a triple eccentric gasket is manufactured, the appearance of the triple eccentric gasket is an annular circular truncated cone, the eccentricity ratios of the triple eccentric gasket are L1, L2 and L3, and the triple eccentric gasket is provided with a centering round hole matched with a bolt; after a gasket is installed in the preformed hole of the movable component, the gasket is inserted into the preformed hole of the fixed component; and by adjusting the relative positions of the triple gaskets, a track circle, a filling circular ring and a filling range circle covering an error range are sequentially formed, and finally the circle center of the centering circular hole is accurately aligned with the center of the preformed hole of the fixed component. Through rotation adjustment of the triple eccentric washers, the error, smaller than or equal to L1 + L2 + L3, of the circle centers of preformed holes of the movable component and the fixed component can be compensated, and gapless rigid connection is achieved in combination with the self-locking effect of the annular circular truncated cone structure. The method can reduce the construction precision requirement and improve the installation efficiency; component displacement caused by bolt looseness is avoided, and the long-term stability and safety of connection are remarkably improved.

Description

Technical Field

[0001] The invention belongs to the field of concrete component installation, in particular to a method for aligning a circular hole by utilizing a triple eccentric washer. Background Art

[0002] In construction projects, the connection between reinforced concrete wall panels and columns usually relies on the alignment of pre-set holes. In the prior art, the pre-set holes between the wall panels and the columns often cannot be accurately aligned due to construction errors, material deformation, or positioning deviations. Generally, the method of increasing the diameter of the wall panel circular hole to a larger diameter than the pre-set hole of the column is adopted to cover the pre-set hole of the column. Although this solves the installation problem, the wall panel and the column are fixed by the friction generated by tightening the mounting bolts to prevent them from moving. However, during the service life, if the bolts are slightly loosened, there is a possibility of movement under the action of the wall panel's own weight, and there will also be certain risks. That is, it is impossible to achieve gapless and precise alignment of the pre-set holes of the movable component and the fixed component while allowing a certain amount of construction error, resulting in low connection reliability and poor long-term stability. Especially for high-rise buildings or scenes with high seismic requirements, this problem may cause serious safety hazards. Therefore, there is an urgent need for an installation method that can effectively compensate for multi-directional errors and ensure a rigid connection.

[0003] Purpose of the Invention

[0004] In order to achieve the above-mentioned purpose, the present invention provides a method for aligning circular holes using triple eccentric washers. By using the method for aligning circular holes using triple eccentric washers, the reserved circular holes of the wall panels on which the triple eccentric washers are installed can be accurately aligned with the reserved holes of the columns through the mutual rotation of the triple eccentric washers. The wall panels are connected to the columns and tightened by bolts, so that the movable components can be firmly fixed on the columns.

[0005] In order to achieve the above objectives, the present invention specifically adopts the following technical means:

[0006] A. Make a triple eccentric washer. The triple eccentric washer has an annular frustum structure, and its eccentricity dimensions include L1, L2, and L3, and is provided with a centering hole;

[0007] B. Install the triple eccentric washer into the circular hole of the movable component, and insert the inner ring inner hole tubular cone into the pre-set circular hole cone of the fixed component;

[0008] C. Adjust the relative position of the triple eccentric washers, including:

[0009] C1. Fix the first and second eccentric washers and rotate the third eccentric washer so that the center of the centering hole forms a trajectory around the center of the inner ring.

[0010] C2. Fix the first eccentric washer and rotate the second and third eccentric washers to form a filling ring;

[0011] C3. Synchronously rotate the triple eccentric washers so that the trajectory circle covers the filling range circle formed by the filling ring;

[0012] D. Fasten the movable component to the fixed component with bolts.

[0013] Furthermore, the eccentricity dimension of the triple eccentric washer satisfies: L1+L2≥L3.

[0014] Furthermore, the radius of the filling range circle is the sum of L1+L2+L3, and the center error of the reserved holes of the fixed component and the movable component is less than or equal to the radius.

[0015] Furthermore, the diameter of the centering circular hole is adapted to the diameter of the bolt, and the triple eccentric washer and the movable component are compressed by tightening the bolt.

[0016] Furthermore, in step C1, there is an eccentric distance L3 between the center of the trajectory circle and the center of the reserved hole of the fixing component.

[0017] Furthermore, in step C2, when L1≠L2, there is an uncovered area in the filled ring, and the area is covered twice by rotating the trajectory circle in step C.

[0018] Furthermore, the centers of the outer ring, the middle ring, and the inner ring of the triple eccentric washer are offset in sequence, and the offset directions are located on the same connecting line.

[0019] Furthermore, any point within the filling range circle can be precisely aligned with the center of the centering hole by adjusting the relative position of the triple eccentric washers.

[0020] Furthermore, the triple eccentric washer is made of engineering plastic or metal.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] This solution precisely controls the center position of the centering hole through the mutual rotational adjustment of the triple eccentric washers, ensuring perfect alignment between the pre-set holes in the movable and fixed components, eliminating any gaps. Furthermore, when the bolts are tightened, the circumferential cone structure of the triple eccentric washers creates a self-locking effect during the tightening process, significantly enhancing the connection's stability and preventing the risk of movement due to loose bolts.

[0023] The radius of the fill circle is determined by the sum of the eccentricity dimensions L1+L2+L3, allowing for center deviations between the pre-set holes in the movable and fixed components within this radius. By adjusting the relative positions of the triple eccentric washers, any offset point within this tolerance range can be accommodated, significantly reducing construction precision requirements and improving installation efficiency. The triple eccentric washer's structural design, through mechanical self-locking and precise alignment, ensures uniform force distribution across the connection, reducing localized stress concentration. This ensures a tight connection even after extended use, significantly extending component life and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A plan view of an eccentric washer according to an embodiment of the present invention;

[0025] Figure 2 It is a cross-sectional view along the AA direction; Figure (a) is a cross-sectional view of the eccentric washer, and Figure (b) is a cross-sectional view of the fixing component;

[0026] Figure 3 It is a schematic diagram of the formation of the filled ring in the present invention;

[0027] Figure 4 It is a schematic diagram of the formation of the filled circle in the present invention;

[0028] Figure 5 Figure (c) is a schematic diagram of the operation of centering a triple eccentric washer at any point; Figure (c) is the synchronous rotation centering of the triple eccentric washer; Figure (d) is the single rotation centering of the inner ring.

[0029] Numbers in the figure:

[0030] 1: Outer ring of eccentric washer;

[0031] 1-1: Center of outer ring (center of reserved hole of fixed component);

[0032] 1-2: The maximum operating boundary of the inner circle of the outer ring rotating around the center 1-1;

[0033] 2: Eccentric washer middle ring;

[0034] 2-1: center of the middle ring;

[0035] 2-2: The maximum operating boundary of the inner circle of the middle ring rotating around the center 1-1;

[0036] 2-3: The maximum operating boundary of the inner circle of the middle ring rotating around the center 2-1.

[0037] 3: Inner ring of eccentric washer;

[0038] 3-1: center of inner ring;

[0039] 3-2: The center trajectory circle of the centering hole 4;

[0040] 3-3: inner ring inner hole tubular truncated cone;

[0041] 4: Centering the round hole;

[0042] 4-1: Align the center of the circular hole;

[0043] 4-2: Center the center line of the circular hole;

[0044] 5: Active components;

[0045] 6: Fixed components;

[0046] 6-1: Centerline of circular hole of fixed component;

[0047] 6-2: Pre-set circular holes in fixed components;

[0048] 6-3: Pre-set circular hole cone in the fixed component.

[0049] 7: Fill the ring (the center trajectory does not cover area 7-1);

[0050] 8: Full coverage trajectory circle range;

[0051] 9: Any center point within the coverage area;

[0052] 10: Bolt. DETAILED DESCRIPTION

[0053] The following describes the embodiments of the present invention by means of specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0054] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, certain parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, the omission of certain well-known structures and their descriptions in the accompanying drawings is understandable.

[0055] The present invention is a method for aligning a circular hole using a triple eccentric washer, and the implementation steps are as follows:

[0056] Step A: Make the Triple Eccentric Washer

[0057] See also Figure 1 and Figure 2 (a) According to the error control requirements, determine the eccentricity dimensions L1, L2, and L3 of the triple eccentric washer, and set the hole diameter of the centering hole 4 (to match the diameter of the bolt 10).

[0058] The triple eccentric washer consists of an outer ring 1, a middle ring 2, and an inner ring 3. The overall structure is a circular frustum. Its taper, diameter, and thickness are adjusted based on the actual reserved hole tolerance. The material used is either engineering plastic or metal, depending on the strength and corrosion resistance requirements of the project scenario.

[0059] Step B: Installation of movable and fixed components

[0060] See also Figure 2 (b) Position the movable component 5 (such as a reinforced concrete wall panel) at the preset position of the fixed component 6.

[0061] Install triple eccentric washers in the circular hole of the movable component 5 to ensure that the outer ring 1, the middle ring 2, and the inner ring 3 are nested in sequence.

[0062] The inner hole tubular cone body 3-3 ( Figure 2 (a) Insert the pre-set circular hole truncated cone 6-3 of the fixing member 6 ( Figure 2 (b)) Complete the initial positioning.

[0063] Step C: Triple Eccentric Washer Adjustment

[0064] Step C1: Formation of trajectory circle 3-2.

[0065] See also Figure 1 and 3 , fix the outer ring 1 and the middle ring 2 (i.e., the eccentric washers 1 and 2), rotate the inner ring 3 360 degrees around the center 3-1 of its outer circle, so that the center 4-1 of the centering hole 4 forms a trajectory circle 3-2 around the center 3-1 (see Figure 1 dotted circle).

[0066] The radius of the trajectory circle 3 - 2 is determined by the eccentricity L3 , and the distance between the center 3 - 1 of the circle and the center 1 - 1 of the reserved hole of the fixing component is L3 .

[0067] Step C2: Generation of Filled Ring 7

[0068] See also Figure 3 , fix the outer ring 1, keep the middle ring 2 and the inner ring 3 without relative displacement, rotate the middle ring 2 360 degrees around the center 2-1, and form a filling ring 7 (see Figure 3 shaded area).

[0069] When L1≠L2, there is an uncovered area 7-1 in the filled ring 7 (see Figure 3blank area in the middle), and is fully covered only when L1=L2.

[0070] Step C3: Filling the area of ​​circle 8

[0071] See also Figure 4 The synchronously rotating triple eccentric washers 1, 2, and 3 rotate 360 ​​degrees around the center of the circle 1-1, and the trajectory circle 3-2 passes through the uncovered area 7-1 twice during the rotation process, and finally forms a filling range circle 8.

[0072] The radius of the filling range circle 8 is the sum of L1+L2+L3, and the center error of the reserved holes of the movable component and the fixed component must be less than or equal to this radius.

[0073] Step D: Bolt-on connection

[0074] See also Figure 5 (c) and Figure 5 (d), where Figure 5 (c) The center trajectory circle 3-2 is rotated synchronously with the triple eccentric washers 1, 2, and 3 (without mutual movement between them) so that the circumference of the center trajectory circle 3-2 is aligned with the center of the centering hole 9 located at any position within the filling circle 8; Figure 5 (d) Rotate the inner ring 3 of the eccentric washer around the center 3-1 of its outer circle to rotate the center of the centering hole 4 to the center 9 of the centering hole at any position. This completes the operation steps of aligning the holes using the triple eccentric washer.

[0075] The specific steps are as follows: After the adjustment is completed, the center 4-1 of the centering hole 4 is accurately aligned with the center of the reserved hole of the fixing component (see Figure 5 (c)), or by rotating the inner ring 3 alone to align with any offset point 9 (see Figure 5 (d)). Insert the bolt 10 and tighten it, and use the tapered structure of the annular truncated cone ( Figure 2 (a)) Generates self-locking force, so that the movable component 5 and the fixed component 6 form a gap-free rigid connection.

[0076] This method can cover any offset point within the error range and eliminate installation gaps through multi-level adjustment of the triple eccentric washers; the annular frustum structure generates uniform compression force when the bolts are tightened, avoiding the risk of loosening during long-term use; and reduces the requirements for the accuracy of the reserved holes (error ≤ L1+L2+L3), simplifying the installation process.

[0077] The above embodiments are only preferred implementations of the present invention. Equivalent modifications or replacements made by those skilled in the art under the principles of the present invention all fall within the protection scope of the present invention.

Claims

1. A method for aligning a circular hole using a triple eccentric washer, characterized in that: A. Making a triple eccentric washer, wherein the triple eccentric washer is a truncated cone structure, the eccentricity dimensions of which include L1, L2, and L3, and is provided with a centering hole (4); B. Install the triple eccentric washer in the circular hole of the movable component (5), and insert the inner ring inner hole tubular truncated cone (3-3) into the pre-set circular hole truncated cone (6-3) of the fixed component (6); C. Adjust the relative position of the triple eccentric washers, including: C1. Fix the first and second eccentric washers (1, 2), rotate the third eccentric washer (3) so that the center of the center hole (4-1) forms a trajectory circle (3-2) around the center of the inner ring (3-1); C2. Fix the first eccentric washer (1), rotate the second and third eccentric washers (2, 3) to form a filling ring (7); C3 synchronously rotate the triple eccentric washers (1, 2, 3) so that the trajectory circle (3-2) covers the filling range circle (8) formed by the filling ring (7); D. Fasten the movable component (5) and the fixed component (6) together with bolts (10).

2. The method for aligning a circular hole using a triple eccentric washer according to claim 1, characterized in that: The eccentricity dimension of the triple eccentric washer satisfies: L1+L2≥L3.

3. The method for aligning a circular hole using a triple eccentric washer according to claim 1, characterized in that: The radius of the filling range circle (8) is the sum of L1+L2+L3, and the center error of the reserved holes of the fixed component (6) and the movable component (5) is less than or equal to the radius.

4. The method for aligning a circular hole using a triple eccentric washer according to claim 1, characterized in that: The diameter of the centering circular hole (4) is adapted to the diameter of the bolt (10), and the triple eccentric washer and the movable component (5) are compressed by tightening the bolt (10).

5. The method for aligning a circular hole using a triple eccentric washer according to claim 1, characterized in that: In step C1, there is an eccentric distance L3 between the center (3-1) of the trajectory circle (3-2) and the center (1-1) of the reserved hole of the fixing component (6).

6. The method for aligning a circular hole using a triple eccentric washer according to claim 1, characterized in that: In step C2, when L1≠L2, there is an uncovered area (7-1) in the filling ring (7), and this area is covered twice by the rotating trajectory circle (3-2) in step C3.

7. The method for aligning a circular hole using a triple eccentric washer according to claim 1, characterized in that: The centers of the outer ring (1), the middle ring (2), and the inner ring (3) of the triple eccentric washer are offset in sequence, and the offset directions are located on the same connecting line.

8. The method for aligning a circular hole using a triple eccentric washer according to claim 1, characterized in that: Any point (9) within the filling range circle (8) can be precisely aligned with the point (9) by adjusting the relative position of the triple eccentric washers.

9. The method for aligning a circular hole using a triple eccentric washer according to claim 1, characterized in that: The triple eccentric washer is made of engineering plastic or metal.

Images