A method for pre-assembling eccentric hinge arc gate support hinge

Abstract

The application discloses a kind of eccentric hinge arc door support hinge pre-assembly methods, belong to eccentric hinge arc door technical field, including selecting site, burying foundation plate, installation adjustment pre-assembly device and detection qualified, install auxiliary support, assemble two fixed hinge bases, check each reference edge, center line and hole position deviation qualified, connect fixed hinge base and main base bolt, detect the coaxiality deviation qualified of the center of four shaft holes of two hinge bases without bearing cover, assemble hinge base bearing cover, detect the coaxiality deviation qualified of the center of four shaft holes of two hinge bases, make the alignment mark of hinge base and pre-assembly device, remove hinge base bearing cover and assemble movable hinge base, eccentric shaft and bearing, assemble movable hinge base, adjust eccentric angle of eccentric shaft consistent, install crank arm and coupling, adjust movable hinge base and detect center line qualified, eccentric action test.The application can solve the problem of positioning precision of eccentric hinge device assembly without support girder, and can improve the safety, accuracy and one-time qualified rate of assembly work.

Description

Technical Field

[0001] This invention relates to the field of mechanical assembly technology, specifically to a pre-assembly method for an eccentric hinged arc door support. Background Technology

[0002] With the continuous development of my country's water conservancy and hydropower engineering, the construction of high dams and large-capacity reservoirs is a growing trend, leading to the increasing application of large, deep-hole arc gates. Eccentric hinge arc gates offer advantages such as adaptability to high water heads, high safety and reliability, high automation, and stable operation. They are receiving increasing attention in the design of deep-hole arc gates under high water heads and pressures, resulting in their growing application.

[0003] The opening and closing of an eccentric hinged arched gate revolves around two hinge supports. The reliability and safety of the arched gate's operation largely depend on the precision of the hinge manufacturing and assembly. The precise control of the coaxiality of the left and right hinge supports after assembly is crucial, directly affecting the smoothness of the arched gate's operation and its service life.

[0004] The arched gate hinge system consists of components such as hinge seats, movable hinge seats, eccentric hinge shafts, couplings, and crank arms. The movable hinge seats are connected to the arched gate support arms, while the hinge seats are installed on the dam foundation. According to specifications, the arched gate must be pre-assembled as a whole during manufacturing. The coaxiality deviation of the left and right hinge seat shaft holes is one of the important inspection indicators, and the detection of the coaxiality deviation of the left and right hinge seat shaft holes during installation is also crucial.

[0005] In the prior art, the invention patent document with publication number CN214199958U, publication date 2021-09-14, entitled "A device for adjusting and detecting the coaxiality of multiple hinges", discloses the following technical solution: A device for adjusting and detecting the coaxiality of multiple hinges, which includes a measuring bracket, a top plate fixed to the top of the measuring bracket, upright plates symmetrically fixed to the top of the top plate, an adjusting frame fixed to the top of the upright plates, an adjusting disc supported inside the adjusting frame by an adjusting bolt assembly, a central hole provided in the center of the adjusting disc, a steel wire passing through the central hole, one end of the steel wire passing around a supporting crossbar and fixed to a steel wire tension bolt, the supporting crossbar being fixed to the outer wall of the adjusting frame, and the steel wire tension bolt being fixed to the upright plate.

[0006] The aforementioned device is only suitable for adjusting the coaxiality of multiple fixed hinge holes with a supporting beam. However, for the hinge support device of an eccentric hinge arched door, which lacks a supporting beam, it is necessary not only to adjust the coaxiality of the holes in the fixed hinge without a supporting beam, but also to assemble structures such as the movable hinge and the eccentric shaft. During the assembly and fixing process, due to the difficulty in determining various reference lines, the difficulty in adjusting the eccentric angle, and the difficulty in controlling the assembly and synchronous rotation accuracy, the assembly accuracy of the hinge support device is directly affected. Therefore, the aforementioned device cannot complete the overall pre-assembly process of the eccentric hinge device without a supporting beam. Summary of the Invention

[0007] This invention aims to solve the problems of difficulty in determining the baseline, difficulty in adjusting the eccentric angle, difficulty in controlling the assembly and synchronous rotation accuracy, poor assembly accuracy and low efficiency in the pre-assembly process of eccentric hinge arched doors in the prior art. It proposes a pre-assembly method for the hinge support of eccentric hinge arched doors, which can realize the rapid assembly and synchronous rotation accuracy control of the eccentric hinge device without support beam.

[0008] To achieve the above-mentioned objectives, the technical solution of the present invention is as follows:

[0009] A pre-assembly method for an eccentric hinged arc door support, the method being based on a pre-assembly device, the pre-assembly device comprising a main base and end reference seats, side reference seats, hole reference seats, and auxiliary supports detachably connected to the main base; the pre-assembly method comprising the following steps:

[0010] Step 1: Select a suitable site to install the main base, and install and adjust the end reference base, side reference base, and hole reference base on the pre-assembled device until the accuracy is qualified;

[0011] Step 2: Install auxiliary brackets on the main base at the corresponding installation positions of the hinge seat and crank arm;

[0012] Step 3: Install two fixed hinge seats respectively, using the end faces of the side reference seat and the hole reference seat and the main base surface as positioning reference surfaces, so that the base plate of the fixed hinge seat is exactly aligned with these three positioning reference surfaces, thereby determining the cross center of the base plate.

[0013] Step 4: Use measuring tools to check that the accuracy of all reference edges, center lines and hole positions of the two fixed hinge seats is up to standard;

[0014] Step 5: Connect the two fixed hinge seats to the base plate bolts on the pre-assembled device;

[0015] Step 6: Use a total station to check that the coaxiality deviation of the four shaft holes of the two fixed hinge seats without bearing covers is qualified.

[0016] Step 7: Assemble the hinge bearing cover and recheck the coaxiality deviation of the four shaft holes of the two fixed hinges to ensure it is within acceptable limits.

[0017] Step 8: Mark the alignment of the two fixed hinge seats with the pre-assembled device;

[0018] Step 9: Remove the hinge bearing cover, assemble the movable hinge, eccentric shaft and bearing, so that the movable hinge on the corresponding side is assembled with the fixed hinge.

[0019] Step 10: Adjust the eccentric shafts on the two hinge seats to make the eccentric angles consistent;

[0020] Step 11: Install the crank arm and coupling;

[0021] Step 12: Adjust the hinge seat and use a total station to check if the center benchmark is qualified;

[0022] Step 13, Eccentric Action Test: Use a special lifting tool to bear the weight of the movable hinge seat on both sides of the lifting tool, and use a manual hoist in the middle to simulate the operation of the crank arm, so that the eccentric shaft rotates and the movable hinge seat moves accordingly.

[0023] In one embodiment, the measuring instruments include, but are not limited to, total stations, rulers, plumb bobs, and steel wires.

[0024] In one embodiment, a deviation value within the range of 0.15 mm indicates that the accuracy is acceptable.

[0025] In one embodiment, the alignment mark between the fixed hinge seat and the pre-assembled device specifically includes: making an alignment mark at the position of the cross center line on the side of the base plate of the fixed hinge seat by means of engraving and punching, so as to facilitate the detection and review of the center line dimension and monitor the dimension change.

[0026] In one embodiment, when connecting the fixed hinge seat to the base plate bolts on the pre-assembled device, the fixed hinge seat has no less than three bolts on each side of its hinge hole axis.

[0027] In one embodiment, the side reference base and the hole reference base are respectively located on two adjacent right-angled sides of the fixed hinge base plate, and the reference end faces of the side reference base and the hole reference base are in contact with the side surface of the fixed hinge base plate.

[0028] In one embodiment, the side reference seat is located at one end of the shaft hole direction of the fixed hinge seat, and the side reference seats of the left and right fixed hinge seats are on the same side; the hole reference seat is set on the same side of the left and right fixed hinge seats with the reference surface perpendicular to the side reference seat. Each fixed hinge seat relies on the cooperation of the side reference seat and the hole reference seat to position the cross center of the fixed hinge seat base plate.

[0029] In one embodiment, the end reference seat is located at the center of the end cross of the hinge hole of the fixed hinge seat, and is used to determine the position of the eccentric hinge shaft.

[0030] In one embodiment, in order to improve positioning accuracy, for each fixed hinge base plate, there are at least two side reference bases and two hole reference bases on its two adjacent right-angled sides.

[0031] In summary, the present invention has the following advantages:

[0032] 1. The pre-assembly method of the present invention utilizes a pre-assembly device and adopts a priority adjustment of the hinge seat. It can be combined with innovative processes such as machining the connecting holes of the crank arm and the coupling and secondary hole machining to solve the problem of assembly positioning accuracy of the eccentric support hinge device without support beam. Using this assembly process can improve the safety, accuracy and first-pass yield of the assembly work.

[0033] 2. This invention uses a pre-assembly device with a main base, end reference base, side reference base, hole reference base, and auxiliary bracket to assist in the pre-assembly process of the eccentric hinge arc door hinge. The device is easy to install and the reference is reliable. The side reference base and hole reference base cooperate with the main base to determine the cross center of the two fixed hinge base plates, which in turn determines the hole center position of the movable hinge base and the fixed hinge base assembly, thereby ensuring the coaxiality of the holes of the left and right fixed hinge bases. The end reference base is set at the end cross center position of the hinge hole of the fixed hinge base, which restricts the axial direction of the eccentric hinge shaft, thus determining the position of the eccentric hinge shaft.

[0034] 3. The method described in this invention is used to complete the pre-assembly of the eccentric hinge arc door support, which improves product quality and production efficiency, and enhances the safety and reliability of equipment operation. Attached Figure Description

[0035] Figure 1 This is a front view of the existing eccentric hinged arc door support structure.

[0036] Figure 2 This is a side view of the structure of an existing eccentric hinged arc door support.

[0037] Figure 3 A front view of the pre-assembly structure of the eccentric hinged arc door support hinge combination pre-assembly device;

[0038] Figure 4 A side view of the structure for pre-assembly of the eccentric hinged arc door support hinge combination pre-assembly device;

[0039] In the picture:

[0040] 1. Live hinge seat, 2. Fixed hinge seat, 3. Coupling, 4. Bearing, 5. Eccentric hinge shaft, 6. Crank arm, 2.1. Adjusting end hinge seat, 2.2. Fixed end hinge seat, 7. Main base, 8. Center reference, 9. Side reference seat, 10. End reference seat, 11. Auxiliary bracket, 12. Hole reference seat. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0044] In the description of this invention, it should be noted that the terms "upper," "vertical," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] like Figure 1-2As shown, the arched gate hinge device consists of a fixed hinge seat 2, a movable hinge seat 1, an eccentric hinge shaft 5, a coupling 3, and a crank arm 6. During actual installation, the movable hinge seat 1 is connected to the arched gate support arm, while the fixed hinge seat 2 is installed on the dam foundation. According to specifications, the arched gate must undergo overall pre-assembly during manufacturing, and the coaxiality deviation of the left and right hinge seat shaft holes is one of the important inspection indicators. Detecting the coaxiality deviation of the left and right hinge seat shaft holes during installation is also crucial. However, existing technologies for eccentric hinge devices without supporting beams suffer from problems such as poor reference accuracy, complex equipment, inconvenient installation and adjustment, low inspection efficiency, and poor operability.

[0047] Therefore, the present invention provides a pre-assembly method for an eccentric hinged arc door hinge. This method requires the use of a pre-assembly device, such as... Figure 3 The diagram shows the cooperation relationship between the pre-assembled device and the eccentric hinge arch door support. The pre-assembled device adopts a modular design, including a main base 7, a side reference base 9, an end reference base 10, a hole reference base 12, and an auxiliary support 11. The main base 7 is a horizontal panel, and the side reference base 9, end reference base 10, hole reference base 12, and auxiliary support 11 are all detachably mounted on the surface of the main base 7.

[0048] To better implement the present invention, the side reference seat 9 and the hole reference seat 12 are further located on two adjacent right-angled sides of the base plate of the fixed hinge seat 2, and their reference end faces are in contact with the side surface of the base plate of the fixed hinge seat 2. Figure 3 As shown, the side reference seat 9 is located at one end of the fixed hinge seat 2 in the direction of the shaft hole, and the side reference seats 9 of the two fixed hinge seats 2 are on the same side. The hole reference seat 12 is set on the same side of the two fixed hinge seats 2, perpendicular to the reference surface of the side reference seat 9. Each fixed hinge seat 2 relies on the cooperation of the side reference seat 9 and the hole reference seat 12 to position the cross center of the base plate of the fixed hinge seat 2. After the cross center of the base plate is confirmed, the center position of the hole of the movable hinge seat 1 and the fixed hinge seat 3 is also confirmed, thereby ensuring the coaxiality of the holes of the two fixed hinge seats 2.

[0049] Furthermore, to improve assembly accuracy, for each fixed hinge base 2, the number of side reference seats 9 and hole reference seats 12 on each of its two adjacent right-angled sides is at least two. It should be noted that, to prevent over-positioning, each fixed hinge base 2 has side reference seats 9 and hole reference seats 12 on only two adjacent right-angled sides of its base plate.

[0050] Furthermore, to prevent axial displacement of the eccentric hinge shaft 5 after assembly, the end reference seat 10 is set at the center of the cross at the end of the hinge hole of the fixed hinge seat 2, serving as a positioning reference for determining the position of the eccentric hinge shaft 5. Figure 3As shown, the end reference seat 10 adopts a welded steel structure, consisting of vertical and horizontal bars that are connected and fixed to each other. The free end face of the horizontal bar of the end reference seat 10 serves as the positioning reference surface to determine the position of the eccentric hinge shaft 5.

[0051] The auxiliary bracket 11 is mainly used to support the hinge seat 1 and the crank arm 6 during pre-assembly to prevent them from rotating. Its installation position is as follows: Figure 3 and Figure 4 As shown.

[0052] Based on the above-mentioned pre-assembly device, the specific operation steps of the eccentric hinge arc door support pre-assembly method of the present invention are as follows:

[0053] Step 1: Select a suitable site to install the main base 7 in the pre-assembled device;

[0054] Step 2: Install and adjust the pre-assembled device, and check whether the accuracy of the main base 7, side reference base 9, end reference base 10, hole reference base 12, etc. of the pre-assembled device is within the qualified accuracy range. Generally, an accuracy within 0.15mm indicates that it is qualified.

[0055] Step 3: Install the auxiliary bracket 11 on the main base 7 at the corresponding installation positions of the hinge seat 1 and the crank arm 6, such as... Figure 3 and Figure 4 As shown;

[0056] Step 4: Assemble the fixed hinge base 2: Install two fixed hinge bases 2 respectively, using the end faces of the side reference base 9 and the hole reference base 12 and the main base 7 as positioning reference surfaces, so that the base plate of the fixed hinge base 2 exactly abuts against these three positioning reference surfaces, thereby determining the cross center of the base plate. During installation, first install the fixed end of the fixed hinge base 2, and then install the adjusting end of the fixed hinge base 2. Figure 3 The right side is the fixed end hinge 2.2, and the left side is the adjusting end hinge 2.1).

[0057] Step 5: Use a total station, engineering ruler, plumb bob, steel wire and other measuring tools to check that all the reference edges, center lines and hole positions of the two fixed hinge seats 2 are within acceptable limits. When the deviation value is within 0.15mm, it is considered acceptable.

[0058] Step 6: Connect the two fixed hinge seats 2 to the base plate bolts on the pre-assembled device. Each fixed hinge seat 2 should have no less than three bolts on each side when viewed from the left and right sides of its hinge hole axis.

[0059] Step 7: Use a total station to check that the coaxiality deviation of the four shaft holes of the two fixed hinge seats 2 without bearing 4 covers is qualified.

[0060] Step 8: Assemble the hinge bearing 4 cover and check again the coaxiality deviation of the four shaft holes of the two fixed hinge bearings 2 to ensure it is within acceptable limits; this step can verify whether the dimensional changes are caused by assembly.

[0061] Step 9: Make alignment marks between the fixed hinge seat 2 and the pre-assembled device: Make alignment marks on the cross center line of the bottom plate of the fixed hinge seat 2 by means of engraving and punching to facilitate the inspection and verification of the center line dimensions and to monitor dimensional changes.

[0062] Step 10: Remove the cover of the hinge bearing 4, assemble the movable hinge 1, the eccentric shaft and the bearing 4, so that the movable hinge 1 on the corresponding side is assembled with the fixed hinge 2.

[0063] Step 11: Adjust the eccentric shafts on the two hinge seats 1 to make the eccentric angles consistent. During adjustment, align the reference lines of the two eccentric shafts by rotating them.

[0064] Step 12: Install crank arm 6 and coupling 3;

[0065] Step 13: Adjust hinge seat 1 and use the total station to check if it meets the central reference 8;

[0066] Step Fourteen: Eccentric Action Test: Using a special lifting device, the weight of the movable hinge seat 1 is borne on both sides of the lifting device, and a manual hoist is used in the middle to simulate the operation of the crank arm 6, so that the eccentric shaft rotates and the movable hinge seat 1 moves accordingly. In this embodiment, the lifting device is a welded steel structure.

[0067] The pre-assembly method described in the above steps of this invention, combined with the pre-assembly device, adopts a priority adjustment of the hinge seat, and can combine innovative processes such as machining the connecting holes of the crank arm and the coupling and secondary hole machining to solve the problem of assembly positioning accuracy of the eccentric hinge device without a support beam, and can improve the safety, accuracy and first-pass yield of the assembly work.

[0068] This invention uses an end reference seat 10 (high-precision end face plate) with a positioning accuracy of 0.15mm for positioning. The device is easy to install and the reference is reliable. This improves product quality and production efficiency, and enhances the safety and reliability of equipment operation.

[0069] Although specific embodiments of the present invention have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A method for pre-assembling an eccentric hinged arc door hinge, used for the pre-assembly of an eccentric hinged arc door hinge without a supporting beam, characterized in that, This method is based on a modular pre-assembly device, which includes a main base (7) and an end reference seat (10), a side reference seat (9), a hole reference seat (12), and an auxiliary bracket (11) detachably connected to the main base (7). The side reference seat (9) is located at one end of the fixed hinge seat (2) in the direction of the shaft hole, and the side reference seats (9) of the two fixed hinge seats (2) are arranged on the same side. The hole reference seat (12) is set on the same side of the two fixed hinge seats (2) with the reference surface perpendicular to the side reference seat (9). The end reference seat (10) is set at the center of the cross at the end of the hinge hole of the fixed hinge seat (2) to position the eccentric hinge shaft (5) and limit its axial displacement. The pre-assembly method includes the following steps: Step 1: Select a site to install the main base (7), and install and adjust the side reference base (9), end reference base (10), and hole reference base (12) until the accuracy is qualified; Step 2: Install auxiliary brackets (11) on the main base (7) at the installation positions corresponding to the hinge seat (1) and the crank arm (6); Step 3: Install two fixed hinge seats (2) respectively. Use the end face of the side reference seat (9), the end face of the hole reference seat (12) and the main base surface as positioning reference surfaces, so that the bottom plate of the fixed hinge seat (2) abuts against these three positioning reference surfaces, thereby determining the cross center of the bottom plate. Step 4: Use measuring tools to check all the reference edges, center lines and hole position deviations of the two fixed hinge seats (2). After the accuracy is qualified, proceed to the next step. Step 5: Connect the two fixed hinge seats (2) to the base plate bolts on the pre-assembled device; Step 6: Use a total station to check the coaxiality deviation of the four shaft holes of the two fixed hinge seats (2) without bearing covers. If the deviation is qualified, proceed to the next step. Step 7: Assemble the hinge bearing cover and recheck the coaxiality deviation of the four shaft holes of the two fixed hinge seats (2). If it passes the test, proceed to the next step. Step 8: Mark the alignment of the fixed hinge (2) and the pre-assembled device by engraving lines and punching at the cross center line position on the side of the base plate of the two fixed hinge seats (2); Step 9: Remove the hinge bearing cover, assemble the movable hinge (1), eccentric shaft and bearing (4), so that the movable hinge (1) on the corresponding side is assembled with the fixed hinge (2); Step 10: Adjust the eccentric shafts on the two hinge seats (1), rotate the eccentric shafts to align the baselines of the two seats, and make the eccentric angles consistent. Step 11: Install the crank arm (6) and coupling (3); Step 12: Adjust the hinge seat (1) and use the total station to check if the center benchmark (8) is qualified; Step 13, Eccentric Action Test: Use a special lifting tool to make the weight of the movable hinge seat (1) bear on both sides of the lifting tool, and use a manual hoist in the middle to simulate the operation of the crank arm (6) to realize the rotation of the eccentric shaft and the corresponding movement of the movable hinge seat (1).

2. The pre-assembly method for an eccentric hinged arc door according to claim 1, characterized in that, The measuring instruments include a total station, a ruler, a plumb bob, and a steel wire.

3. The pre-assembly method for an eccentric hinged arc door according to claim 1, characterized in that, In steps one and four, a deviation within 0.15mm indicates that the accuracy is acceptable.

4. The pre-assembly method for an eccentric hinged arc door according to claim 1, characterized in that, In step five, fix the bottom plate bolts on both sides of the hinge seat (2) along the axis of the hinge hole, with no less than three bolts on each side.

5. The pre-assembly method for an eccentric hinged arc door according to claim 1, characterized in that, The side reference seat (9) and the hole reference seat (12) are located on two adjacent right-angled sides of the base plate of the fixed hinge seat (2), and the reference end faces of the side reference seat (9) and the hole reference seat (12) are in contact with the side surface of the base plate of the fixed hinge seat (2).

6. A pre-assembly method for an eccentric hinged arc door according to claim 1 or 5, characterized in that, For each fixed hinge base (2), the number of side reference bases (9) and hole reference bases (12) on its two adjacent right-angled sides is at least two.

7. The pre-assembly method for an eccentric hinged arc door according to claim 1, characterized in that, The end reference seat (10) is a welded steel structure, consisting of a vertical rod and a horizontal rod connected together. The free end face of the horizontal rod is used as the positioning reference surface to determine the position of the eccentric hinge shaft (5).

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