A temporary fixing device for a crane anti-seismic device and its operation method

Abstract

The present invention discloses a temporary fixing device for a crane anti-seismic device, including a reinforcing tool. The reinforcing tool is composed of two side panels of an integrated structure and a connecting plate located between the two side panels. A threaded hole is provided at each end of the side panel. The side panel can be used in conjunction with a main beam or an anti-seismic device. The reinforcing tool is an angled type, that is, the cross-section of the connecting plate is an isosceles trapezoid. The two side panels are fixedly connected to the two waists of the connecting plate, so that the two side panels are tilted. There is an angle between the two side panels. The reinforcing tool is used to connect the main beam and the anti-seismic device. The horizontal part of the anti-seismic device is tilted by the reinforcing tool to make way for the rail beam. There is a spacing of at least 200 mm between the anti-seismic device and the rail beam, which can solve the problem of interference between the anti-seismic device and the rail beam when it is hoisted into place with a trolley.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power construction, and in particular to a temporary fixing device for a ring-hanging anti-seismic device and an operating method thereof. Background Art

[0002] Nuclear ring crane, that is, circular bridge crane for nuclear power plant, is a special heavy bridge crane that provides lifting services for the installation and maintenance of heavy equipment in the reactor building and reactor refueling during the construction and operation phase of the nuclear power plant. When the nuclear ring crane is in place on the rail beam, a trolley anti-seismic device needs to be installed at the bottom of the ring crane to play an anti-seismic role in emergencies. The trolley anti-seismic device is heavy and needs to be hoisted into place together with the ring crane. However, the anti-seismic device is an L-shaped device, and the horizontal section needs to extend to the bottom of the rail beam. There is an interference problem when the anti-seismic device is hoisted into place together with the ring crane.

[0003] At present, the installation steps of the seismic device are as follows: first, complete the overall assembly of the ring crane on the ground, and fix the seismic device to the bottom of the trolley beam in the form of welded lifting ears, then hoist the trolley together with the seismic device to the upper track of the track beam, and then use a hand hoist to hoist the trolley seismic device to the installation position for final installation.

[0004] However, although the interference problem is solved when the anti-seismic device is installed using the above installation method, at least the following problems still exist:

[0005] When the seismic device is temporarily fixed on the ground, it is necessary to weld a lifting lug on the main beam, and then fix the seismic device with a hand winch. In this way, the temporary lifting lug cannot be removed after the installation is completed, and a permanent item will be generated on the main beam.

[0006] Since the anti-seismic device is at a very high height in the reactor building of a nuclear power plant, the use of a hand hoist to lift and install the anti-seismic device at high altitude is a high-altitude lifting operation, which has certain safety hazards. In addition, in order to ensure that the anti-seismic device can be installed in place, it is necessary to carefully verify the installation position and adjust the installation gap, which is bound to increase the time of the high-altitude lifting operation and there are certain safety hazards.

[0007] The construction process is cumbersome and involves a wide range of construction work types. It requires cooperation between various types of work such as welding, non-destructive testing, painting, lifting and locksmithing to finally complete the installation of the seismic device. Construction management and personnel coordination are demanding, and multiple types of work together will lead to low construction efficiency. Summary of the Invention

[0008] The present invention aims to solve the problems existing in the prior art. To this end, one purpose of the present invention is to provide a temporary fixing device for a crane anti-seismic device and its operating method, which can hoist the anti-seismic device into place together with the ring crane, eliminating the problem of interference with the ring rail beam. The restoration work in place is safe and reliable, the construction efficiency is high, and the construction risk is reduced.

[0009] To achieve the above-mentioned purpose, the present invention proposes a temporary fixing device for a crane anti-seismic device, including a reinforcement tool, a plurality of long screws and a plurality of temporary bolts. The reinforcement tool is composed of two side panels of an integrated structure and a connecting plate located between the two side panels. A threaded hole is provided at each end of the side panel. The side panel can be used in conjunction with a main beam or an anti-seismic device.

[0010] Further to the above scheme, the reinforcement tooling is of an angled type, that is, the cross-section of the connecting plate is an isosceles trapezoid, and the two side panels are fixedly connected to the two waists of the connecting plate, so that there is an angle between the two side panels.

[0011] Taking the above solution a step further, the reinforcement tooling is installed in the threaded holes at the top of the main beam and the anti-seismic device; the long screw is installed in the threaded holes in the middle of the main beam and the anti-seismic device; and the temporary bolts are installed in the threaded holes at the bottom of the main beam and the anti-seismic device.

[0012] A method for operating a temporary fixing device for a crane anti-seismic device, the specific steps are as follows:

[0013] S1. Fix the reinforcement tooling to the main beam. Align the threaded holes on one side panel of the reinforcement tooling with the threaded holes at the top of the main beam. Install temporary bolts in the threaded holes and tighten them with nuts. Note that the opening direction of the angle between the two side panels should face upwards.

[0014] S2. Fix the anti-seismic device and the reinforcement tooling together, align the threaded hole on the top of the anti-seismic device with the threaded hole on the other side panel of the reinforcement tooling, then install temporary bolts in the threaded holes and tighten them with nuts;

[0015] S3. Temporarily fix the main beam and the anti-seismic device together. Install a long screw in the threaded hole between the main beam and the anti-seismic device. Install temporary bolts in the threaded holes at the bottom of the main beam and the anti-seismic device and tighten them with nuts. At this time, the anti-seismic device is fixed on the main beam at an angle.

[0016] S4. Put the main beam and the seismic device in place and hoist them above the track-bearing beam.

[0017] S5. Remove the reinforcement fixture, remove the nuts, and remove the reinforcement fixture from between the main beam and the seismic device;

[0018] S6. Reset the anti-seismic device and slowly move it toward the main beam. Then slowly tighten the nut on the long screw until the anti-seismic device is completely attached to the main beam and all threaded holes between the main beam and the anti-seismic device are aligned.

[0019] S7. Preliminary fixation of the anti-seismic device: install bolts in all the remaining threaded holes and tighten them with nuts;

[0020] S8. Complete the fixing of the anti-seismic device, remove the long screw and temporary bolts, then install the bolts in the threaded holes and tighten them with nuts.

[0021] The present invention has at least the following beneficial effects: the anti-seismic device of the ring crane trolley can be directly installed into position with the ring crane, and the anti-seismic device can be put into position without generating any extra items. In addition, the operation is convenient and simple, and the anti-seismic device can be installed by only requiring a fitter to tighten the bolts. This ensures safe and interference-free installation, while reducing the coordination of construction between various types of work, thereby greatly improving construction and management efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the installation of the reinforcement tooling, main beam and anti-seismic device of the present invention;

[0025] Figure 4 This invention Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is a schematic diagram of the installation process of the earthquake-resistant device.

[0027] In the figure: 1—reinforcement tooling, 11—side plate, 12—connecting rod, 2—threaded hole, 3—long screw, 4—temporary bolt, 5—main beam, 6—anti-seismic device, 7—track-bearing beam. DETAILED DESCRIPTION

[0028] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of devices consistent with certain aspects of the present application, as detailed in the appended claims.

[0029] The terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the same ordinary meaning as understood by persons of ordinary skill in the art to which this invention belongs. The use of "a," "an," and similar terms in this specification and claims does not indicate a limitation of quantity, but rather indicates the presence of at least one. "A plurality" includes two and is equivalent to at least two. "Includes" or "comprising" and similar terms mean that the elements or items preceding "includes" or "comprising" include the elements or items listed after "includes" or "comprising," and their equivalents, and do not exclude other elements or items. "Connected" or "connected" and similar terms are not limited to physical or mechanical connections and may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0030] like Figure 1-5 As shown, a temporary fixing device for a crane anti-seismic device includes a reinforcement tool 1, which is composed of two side panels 11 of an integrated structure and a connecting plate 12 located between the two side panels 11. The reinforcement tool 1 of the integrated structure is more firm, and a threaded hole 2 is provided at each end of the side panel 11. The side panel 11 can be used in conjunction with the main beam 5 or the anti-seismic device 6. The reinforcement tool 1 is an angled type, that is, the cross-section of the connecting plate 12 is an isosceles trapezoid, and the two side panels 11 are fixedly connected to the two waists of the connecting plate 12, so that the two side panels 11 are tilted, and there is an angle between the two side panels 11. The reinforcement tool 1 is used to connect the main beam 5 and the anti-seismic device 6. The horizontal part of the L-shaped anti-seismic device 6 is tilted by the reinforcement tool 1 to make way for the position of the rail beam 7. There is a distance of at least 200 mm between the anti-seismic device 6 and the rail beam 7, which can solve the problem of interference between the anti-seismic device 6 and the rail beam 7 when the trolley is hoisted into place.

[0031] A temporary fixing device for a crane anti-seismic device also includes two long screws 3, which are installed in threaded holes 2 in the middle of a main beam 5 and an anti-seismic device 6. The anti-seismic device 6 is slowly reset by cooperating with the long screws 3 and nuts.

[0032] A temporary fixing device for a crane anti-seismic device also includes two temporary bolts 4. The temporary bolts 4 are installed in the threaded holes 2 at the bottom of the main beam 5 and the anti-seismic device 6 to control the direction of the anti-seismic device and fix it for insurance.

[0033] A method for operating a temporary fixing device for a crane anti-seismic device, the specific steps are as follows:

[0034] S1. Fix the reinforcement tool 1 to the main beam 5. Align the threaded hole 2 on one side plate 11 of the reinforcement tool 1 with the threaded hole 2 at the top of the main beam 5. Then install a temporary bolt 4 in the threaded hole 2 and tighten it with a nut. It should be noted that the opening direction of the angle between the two side plates 11 is upward;

[0035] S2. Fix the anti-seismic device 6 and the reinforcement tool 1 together, align the uppermost threaded hole 2 of the anti-seismic device 6 with the threaded hole 2 on the other side plate 11 of the reinforcement tool 1, and then install a temporary bolt 4 in the threaded hole 2 and tighten it with a nut;

[0036] S3. Temporarily fix the main beam 5 and the anti-seismic device 6 together. Install the long screw 3 in the threaded hole 2 between the main beam 5 and the anti-seismic device 6. Install temporary bolts 4 in the threaded holes 2 at the bottom of the main beam 5 and the anti-seismic device 6 and tighten them with nuts. At this time, the anti-seismic device 6 is fixed on the main beam 5 at an angle.

[0037] S4, put the main beam 5 and the anti-seismic device 6 in place, and hoist the main beam 5 and the anti-seismic device 6 into place above the track-bearing beam 7;

[0038] S5. Remove the reinforcement tool 1 and the long screw 3, remove the nut, and remove the reinforcement tool 1 and the long screw 3 from between the main beam 5 and the anti-seismic device 6;

[0039] S6. Reset the anti-seismic device 6 and slowly move it toward the main beam 5. Then slowly tighten the nut on the long screw 3 until the anti-seismic device 6 is completely attached to the main beam 5 and all the threaded holes 2 between the main beam 5 and the anti-seismic device 6 are aligned.

[0040] S7, preliminarily fix the anti-seismic device 6, install bolts in the remaining threaded holes 2, and tighten them with nuts;

[0041] S8. After fixing the anti-seismic device 6, remove the long screw rod 3 and the temporary bolt 4, then install the bolt in the threaded hole 2 and tighten it with a nut.

[0042] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for operating a temporary fixing device for a crane anti-seismic device, characterized in that: It includes a reinforcement tool, several long screws and several temporary bolts. The reinforcement tool consists of two side panels of an integrated structure and a connecting plate located between the two side panels. A threaded hole is provided at each end of the side panel. The reinforcement tool is of an angled type. The cross-section of the connecting plate is an isosceles trapezoid. The two side panels are fixedly connected to the two waists of the connecting plate respectively. The reinforcement tool is installed in the threaded holes at the top of the main beam and the anti-seismic device; the long screws are installed in the threaded holes in the middle of the main beam and the anti-seismic device; and the temporary bolts are installed in the threaded holes at the bottom of the main beam and the anti-seismic device. The specific steps are as follows: S1. Fix the reinforcement tooling to the main beam. Align the threaded holes on one side panel of the reinforcement tooling with the threaded holes at the top of the main beam. Install temporary bolts in the threaded holes and tighten them with nuts. Note that the opening direction of the angle between the two side panels should face upwards. S2. Fix the anti-seismic device and the reinforcement tooling together, align the threaded hole on the top of the anti-seismic device with the threaded hole on the other side panel of the reinforcement tooling, then install temporary bolts in the threaded holes and tighten them with nuts; S3. Temporarily fix the main beam and the anti-seismic device together. Install a long screw in the threaded hole between the main beam and the anti-seismic device. Install temporary bolts in the threaded holes at the bottom of the main beam and the anti-seismic device and tighten them with nuts. At this time, the anti-seismic device is fixed on the main beam at an angle. S4. Put the main beam and the seismic device in place and hoist them above the track-bearing beam. S5. Remove the reinforcement fixture, remove the nuts, and remove the reinforcement fixture from between the main beam and the seismic device; S6. Reset the anti-seismic device and slowly move it toward the main beam. Then slowly tighten the nut on the long screw until the anti-seismic device is completely attached to the main beam and all threaded holes between the main beam and the anti-seismic device are aligned. S7. Preliminary fixation of the anti-seismic device: install bolts in all the remaining threaded holes and tighten them with nuts; S8. Complete the fixing of the anti-seismic device, remove the long screw and temporary bolts, then install the bolts in the threaded holes and tighten them with nuts.

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