CN112952674A - Prefabricated antidetonation gallows - Google Patents
Prefabricated antidetonation gallows Download PDFInfo
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- CN112952674A CN112952674A CN202110135933.1A CN202110135933A CN112952674A CN 112952674 A CN112952674 A CN 112952674A CN 202110135933 A CN202110135933 A CN 202110135933A CN 112952674 A CN112952674 A CN 112952674A
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- 238000013016 damping Methods 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/26—Installations of cables, lines, or separate protective tubing therefor directly on or in walls, ceilings, or floors
- H02G3/263—Installation, e.g. suspension, of conduit channels or other supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention provides a prefabricated anti-seismic support and hanger frame, which comprises a support and hanger frame main body, triangular inclined struts, anti-seismic connecting components, a damping spring and an inclination detector, wherein the triangular inclined struts are arranged at the top of the support and hanger frame main body, the inclined struts are arranged on two sides of the support and hanger frame main body, the plane included angle between the inclined struts and the support and hanger frame main body is 45 degrees, the triangular inclined struts and the inclined struts are provided with the anti-seismic connecting components, the damping spring is arranged between crossbearers on the support and hanger frame main body, and the inclination detector is arranged on one side of the damping spring: the U-shaped damping spring is arranged on the anti-seismic support and hanger frame, so that the vibration or pressure intensity of the dense bus is reduced, and the dense bus is prevented from being damaged due to the random vibration under the action of strong shock and in the logistics transportation process; be equipped with the slope detector on the antidetonation gallows, whether the main effect lies in that whether there is the slope in real-time supervision gallows in installation and the use that comes into operation, has prevented that a gallows from causing the condition that the pipeline destroyed because of the slope in macroseism and commodity circulation transportation.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of supports and hangers, in particular to a prefabricated anti-seismic support and hanger which is quickly installed and has the functions of anti-seismic, vibration reduction, hoisting, inclination detection and inclination alarm.
[ background of the invention ]
When an earthquake occurs, the damage of the electromechanical equipment of the building can not only cause the failure of the use function of the equipment, but also cause secondary disasters such as fire disasters, and the number of casualties is greatly increased and even exceeds that caused by direct disasters such as collapse of the building. Furthermore, the electromechanical devices are also subjected to random vibration effects during logistics transportation. Therefore, the earthquake fortification of the building electromechanical equipment is very important in the comprehensive earthquake fortification of the building and the logistics transportation. In order to prevent personnel casualties and property loss caused by failure, short circuit and fire of an electric power system in an earthquake or a logistics process, anti-seismic reinforcement is required to be carried out between an electromechanical pipeline system and building structures such as concrete, a steel structure and a wood structure, anti-seismic support hangers are required to be arranged on cable bridges, cable ladder frames, cable boxes and bus ducts with more than certain mass, and a reliable anchoring form is adopted.
[ summary of the invention ]
The invention aims to solve the seismic problem of the dense bus related to the upper section, is beneficial to enhancing the working stability of an electromechanical pipeline system during an earthquake or in a logistics process and avoids the defects of casualties and property loss caused by failure of a power system, and provides a novel rapid-installation prefabricated seismic support and hanger with the functions of seismic resistance, vibration reduction, hoisting, inclination detection and inclination alarm.
The invention is realized by the following technical scheme:
the utility model provides a prefabricated antidetonation gallows, includes a gallows main part, triangle bracing, antidetonation connecting elements, damping spring, slope detector, gallows main part top is equipped with the triangle bracing, a gallows main part both sides are equipped with the bracing, the bracing with the plane contained angle of a gallows main part is 45, be equipped with antidetonation connecting elements on triangle bracing, the bracing, be equipped with damping spring between the crossbearer in the gallows main part, damping spring one side is equipped with the slope detector.
Furthermore, the support hanger main body comprises a first upright post, a second upright post, a first cross frame, a second cross frame, a third cross frame, a fourth cross frame, a base and a right-angle connecting piece, wherein the first cross frame is arranged between the first upright post and the bottom of the second upright post, two ends of the first cross frame are respectively and fixedly connected with the bottoms of the first upright post and the second upright post through the right-angle connecting piece, the second cross frame is arranged above the first cross frame, two ends of the second cross frame are respectively and fixedly connected with the first upright post and the second upright post through the right-angle connecting piece, the third cross frame is arranged above the second cross frame, two ends of the third cross frame are respectively and fixedly connected with the middle parts of the first upright post and the second upright post through the right-angle connecting piece, the fourth cross frame is arranged between the top parts of the first upright post and the second upright post, two ends of the fourth cross frame are respectively and fixedly connected with the top parts of the first upright post and the second upright post through, first crossbearer with be equipped with a plurality of damping spring between the second crossbearer, the third crossbearer with also be equipped with a plurality of damping spring between the fourth crossbearer, first stand, second stand top are equipped with the base, be equipped with the slope detector on second crossbearer, the fourth crossbearer.
Further, the triangular inclined strut comprises a first connecting component, a first connecting arm, a second connecting component, a second connecting arm, a third connecting component and a fourth connecting component, wherein the first connecting component and the second connecting component are respectively installed at two ends of a fourth cross frame, one end of the first connecting arm is connected with the first connecting component, the other end of the first connecting arm is connected with the third connecting component, one end of the second connecting arm is connected with the second connecting component, the other end of the second connecting arm is connected with the fourth connecting component, and the triangular inclined strut is formed by the first connecting component, the first connecting arm, the second connecting component, the second connecting arm, the third connecting component and the fourth connecting component.
Further, the bracing includes first bracing connecting piece, first bracing linking arm, second bracing connecting piece, second bracing linking arm, third bracing connecting piece, fourth bracing connecting piece, first bracing connecting piece, second bracing connecting piece are installed respectively at second crossbearer both ends, bracing linking arm one end with first bracing connecting piece is connected, first bracing linking arm other end with the third bracing connecting piece is connected, second bracing linking arm one end with the second bracing connecting piece is connected, the second bracing linking arm other end with the fourth bracing connecting piece is connected.
Furthermore, the anti-seismic connecting component comprises a connecting piece, a bolt, a middle vertical plate and a middle transverse plate, wherein a round hole is formed in the connecting piece, a threaded hole is formed in the middle transverse plate, the middle transverse plate penetrates through the round hole in the connecting piece through the bolt and is fixedly connected with the connecting piece, the middle vertical plate is movably connected with the middle transverse plate through the bolt, the bolt penetrates through the threaded hole in the middle transverse plate and is aligned with the groove, a clamping object can pass through the gap, the threaded hole is opposite to the middle vertical plate, the middle vertical plate is provided with a groove meshed with the middle transverse plate, one side of the groove covers the threaded hole in the middle transverse plate, the inner surface of the groove, which covers one side of the threaded hole, is in a ladder shape, and a gap for the clamping object to.
Furthermore, the right-angle connecting piece is a special-shaped channel steel nut, and teeth on two sides of the right-angle connecting piece can be embedded into the channel steel curled edge, so that the fastening and the fixing of any position in the channel steel curled edge are realized.
Further, the damping spring is a U-shaped damping spring.
Further, the U-shaped damping spring is made of steel.
Further, the inclination detector comprises a shell, a main control circuit board and an inclination angle sensor, wherein a round hole is formed in one side of the shell, the main control circuit board is arranged inside the shell, the inclination angle sensor is arranged on the main control circuit board, and the main control circuit board is in signal connection with the inclination angle sensor.
The invention has the beneficial effects that:
(1) compared with the traditional support and hanger on-site installation process which needs on-site cutting and welding, the product material of the prefabricated installation process needs to be precisely designed and produced according to the product design, the tolerance of the component type product is not more than 1mm, the dimensional tolerance of the vertical and horizontal main body section bars is not more than 20mm, and the production precision is higher;
(2) the prefabricated anti-seismic support and hanger is provided with the U-shaped damping spring, so that vibration borne by the dense bus is reduced, pressure intensity borne by the dense bus is reduced, and the dense bus is prevented from being damaged under the action of strong shock and under the action of random vibration in the logistics transportation process;
(3) the prefabricated anti-seismic support and hanger frame is provided with an inclination detector, and the main function is to monitor whether the support and hanger frame is inclined in the installation process and the use process in real time, so that the condition that pipelines are damaged due to inclination in the strong earthquake and the logistics transportation process of the support and hanger frame is prevented; when the support hanger is inclined at an angle of more than 5 degrees (inclined towards any direction) due to improper operation of workers in an installation stage or random vibration generated by earthquake and logistics transportation in an in-use stage, the inclination detector can automatically give an alarm and transmit a detection result to a client terminal;
(4) the base is arranged on the stand column of the prefabricated anti-seismic support and hanger, the base connecting hole is designed to be oval, the position of the support and hanger can be adjusted more conveniently and flexibly, and rooting of a steel structure and a concrete structure can be realized.
[ description of the drawings ]
FIG. 1 is a schematic structural view of a prefabricated seismic support hanger of the present invention;
FIG. 2 is a schematic structural view of the seismic connecting member of the present invention;
FIG. 3 is a schematic cross-sectional view of the anti-seismic connecting member according to the present invention;
FIG. 4 is a schematic view of the tilt detector of the present invention;
FIG. 5 is a schematic structural diagram of a main control circuit board and a tilt sensor according to the present invention;
FIG. 6 is a schematic diagram of the signal transmission of the tilt detector of the present invention;
reference numerals: 1. a support hanger main body; 11. a first upright post; 12. a second upright post; 13. a first cross frame; 14. a second cross frame; 15. a third cross frame; 16. a fourth cross frame; 17. a base; 18. a right angle connector; 2. a triangular inclined strut; 21. a first connecting member; 22. a first connecting arm; 23. a second connecting member; 24. a second connecting arm; 25. a third connecting member; 26. a fourth connecting member; 3. bracing; 31. a first sprag connection; 32. a first diagonal bracing link arm; 33. a second sprag connection; 34. a second diagonal bracing connecting arm; 35. a third diagonal brace connector; 36. a fourth sprag connection; 4. an anti-seismic connecting member; 41. a connecting member; 42. a bolt; 43. a bolt; 44. a middle vertical plate; 45. a middle transverse plate; 5. a damping spring; 6. an inclination detector; 61. a housing; 62. a main control circuit board; 63. an inclination angle sensor.
[ detailed description ] embodiments
The invention is further described with reference to the accompanying drawings and the detailed description:
as shown in fig. 1, 2, 3, 4, 5 and 6, a prefabricated anti-seismic support and hanger comprises a support and hanger main body 1, triangular inclined struts 2, 3, anti-seismic connecting members 4, damping springs 5 and an inclination detector 6, wherein the triangular inclined struts 2 are arranged at the top of the support and hanger main body 1, the inclined struts 3 are arranged on two sides of the support and hanger main body 1, a plane included angle between each inclined strut 3 and the support and hanger main body 1 is 45 degrees, the anti-seismic connecting members 4 are arranged on the triangular inclined struts 2 and the inclined struts 3, the damping springs 5 are arranged between crossbearers on the support and hanger main body 1, and the inclination detector 6 is arranged on one side of each damping spring 5.
Preferably, the support hanger main body 1 comprises a first upright post 11, a second upright post 12, a first cross frame 13, a second cross frame 14, a third cross frame 15, a fourth cross frame 16, a base 17 and a right-angle connecting piece 18, the first cross frame 13 is arranged between the bottoms of the first upright post 11 and the second upright post 12, two ends of the first cross frame 13 are respectively and fixedly connected with the bottoms of the first upright post 11 and the second upright post 12 through the right-angle connecting piece 18, the second cross frame 14 is arranged above the first cross frame 13, two ends of the second cross frame 14 are respectively and fixedly connected with the first upright post 11 and the second upright post 12 through the right-angle connecting piece 18, the third cross frame 15 is arranged above the second cross frame 14, two ends of the third cross frame 15 are respectively and fixedly connected with the middle parts of the first upright post 11 and the second upright post 12 through the right-angle connecting piece 18, the fourth cross frame 16 is arranged between the tops of the first upright post 11 and the second upright post 12, fourth crossbearer 16 both ends pass through right angle connecting piece 18 respectively with first stand 11, second stand 12 top fixed connection, first crossbearer 13 with be equipped with a plurality of damping spring 5 between the second crossbearer 14, third crossbearer 15 with also be equipped with a plurality of damping spring 5 between the fourth crossbearer 16, first stand 11, second stand 12 top are equipped with base 17, be equipped with slope detector 6 on second crossbearer 14, the fourth crossbearer 16.
Preferably, the triangular diagonal brace 2 includes a first connecting member 21, a first connecting arm 22, a second connecting member 23, a second connecting arm 24, a third connecting member 25 and a fourth connecting member 26, the first connecting member 21 and the second connecting member 23 are respectively installed at both ends of the fourth cross frame 16, one end of the first connecting arm 22 is connected with the first connecting member 21, the other end of the first connecting arm 22 is connected with the third connecting member 25, one end of the second connecting arm 24 is connected with the second connecting member 23, the other end of the second connecting arm 24 is connected with the fourth connecting member 26, and a triangular diagonal brace is formed by the first connecting member 21, the first connecting arm 22, the second connecting member 23, the second connecting arm 24, the third connecting member 25 and the fourth connecting member 26.
Preferably, the bracing 3 includes first bracing connecting piece 31, first bracing linking arm 32, second bracing connecting piece 33, second bracing linking arm 34, third bracing connecting piece 35, fourth bracing connecting piece 36, first bracing connecting piece 31, second bracing connecting piece 33 are installed respectively at second crossbearer 14 both ends, bracing linking arm 32 one end with first bracing connecting piece 31 is connected, first bracing linking arm 32 other end with third bracing connecting piece 35 is connected, second bracing linking arm 34 one end with second bracing connecting piece 33 is connected, second bracing linking arm 34 other end with fourth bracing connecting piece 36 is connected.
Preferably, the anti-seismic connecting member 4 comprises a connecting piece 41, a bolt 42, a bolt 43, an intermediate vertical plate 44, an intermediate transverse plate 45, the connecting piece 41 is provided with a round hole, the middle transverse plate 45 is provided with a threaded hole, the middle transverse plate 45 passes through the round hole on the connecting piece 41 through a bolt 42 to be fixedly connected with the connecting piece 41, the middle vertical plate 44 is movably connected with the middle transverse plate 45 through a bolt 42, the bolt 43 passes through a threaded hole on the middle transverse plate 45, and is aligned with the recess, clearance for the clamp to enter and exit, the threaded hole being opposite the center riser 44, the middle vertical plate 44 is provided with a groove engaged with the middle transverse plate 45, one side of the groove covers a threaded hole on the middle transverse plate 45, the inner surface of the groove on the side covering the threaded hole is in a step shape, and a gap for the clamped object to enter and exit is formed between the middle transverse plate 45 and the step-shaped inner surface of the groove.
Preferably, the inclination detector 6 comprises a shell 61, a main control circuit board 62 and an inclination sensor 63, wherein a round hole is formed in one side of the shell, the main control circuit board 62 is arranged inside the shell 61, the inclination sensor 63 is arranged on the main control circuit board 62, and the main control circuit board 62 is in signal connection with the inclination sensor 63.
Preferably, the right-angle connector 18 is a special-shaped channel steel nut, and teeth arranged on two sides of the right-angle connector can be embedded into the channel steel curled edge, so that the right-angle connector can be fastened and positioned at any position in the channel steel curled edge.
Preferably, the damping spring 5 is a U-shaped damping spring.
Preferably, the U-shaped damping spring is made of steel.
Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (9)
1. The utility model provides a prefabricated antidetonation gallows which characterized in that: including a gallows main part, triangle bracing, antidetonation connecting elements, damping spring, slope detector, a gallows main part top is equipped with the triangle bracing, a gallows main part both sides are equipped with the bracing, the bracing with the plane contained angle of a gallows main part is 45, be equipped with antidetonation connecting elements on triangle bracing, the bracing, be equipped with damping spring between the crossbearer in the gallows main part, damping spring one side is equipped with the slope detector.
2. The prefabricated earthquake-resistant support and hanger frame as claimed in claim 1, wherein: the support hanger main body comprises a first upright post, a second upright post, a first cross frame, a second cross frame, a third cross frame, a fourth cross frame, a base and right-angle connecting pieces, wherein the first cross frame is arranged between the first upright post and the bottom of the second upright post, two ends of the first cross frame are respectively and fixedly connected with the bottoms of the first upright post and the second upright post through the right-angle connecting pieces, the second cross frame is arranged above the first cross frame, two ends of the second cross frame are respectively and fixedly connected with the middle parts of the first upright post and the second upright post through the right-angle connecting pieces, the third cross frame is arranged above the second cross frame, two ends of the third cross frame are respectively and fixedly connected with the middle parts of the first upright post and the second upright post through the right-angle connecting pieces, the fourth cross frame is arranged between the top parts of the first upright post and the second upright post, and two ends of the fourth cross frame are respectively and fixedly connected with the top parts of the first upright post, first crossbearer with be equipped with a plurality of U type damping spring between the second crossbearer, the third crossbearer with also be equipped with a plurality of U type damping spring between the fourth crossbearer, first stand, second stand top are equipped with the base, be equipped with the slope detector on second crossbearer, the fourth crossbearer.
3. The prefabricated earthquake-resistant support and hanger frame as claimed in claim 1, wherein: the triangular inclined strut comprises a first connecting component, a first connecting arm, a second connecting component, a second connecting arm, a third connecting component and a fourth connecting component, wherein the first connecting component and the second connecting component are respectively installed at two ends of a fourth cross frame, one end of the first connecting arm is connected with the first connecting component, the other end of the first connecting arm is connected with the third connecting component, one end of the second connecting arm is connected with the second connecting component, the other end of the second connecting arm is connected with the fourth connecting component, and the triangular inclined strut is formed by the first connecting component, the first connecting arm, the second connecting component, the second connecting arm, the third connecting component and the fourth connecting component.
4. The prefabricated earthquake-resistant support and hanger frame as claimed in claim 1, wherein: the bracing includes first bracing connecting piece, first bracing linking arm, second bracing connecting piece, second bracing linking arm, third bracing connecting piece, fourth bracing connecting piece, first bracing connecting piece, second bracing connecting piece are installed respectively at the second crossbearer both ends, bracing linking arm one end with first bracing connecting piece is connected, the first bracing linking arm other end with the third bracing connecting piece is connected, second bracing linking arm one end with the second bracing connecting piece is connected, the second bracing linking arm other end with the fourth bracing connecting piece is connected.
5. The prefabricated earthquake-resistant support and hanger frame as claimed in claim 1, wherein: the anti-seismic connecting component comprises a connecting piece, a bolt, a middle vertical plate and a middle transverse plate, wherein a round hole is formed in the connecting piece, a threaded hole is formed in the middle transverse plate, the middle transverse plate penetrates through the round hole in the connecting piece through the bolt and is fixedly connected with the connecting piece, the middle vertical plate is movably connected with the middle transverse plate through the bolt, the bolt penetrates through the threaded hole in the middle transverse plate and is aligned with a groove, a clamp object can pass through the gap, the threaded hole is right opposite to the middle vertical plate, the groove meshed with the middle transverse plate is formed in the middle vertical plate, one side of the groove covers the threaded hole in the middle transverse plate, the inner surface of one side of the groove covering the threaded hole is in a ladder shape, and a gap for the clamp object to.
6. The prefabricated earthquake-resistant support and hanger frame as claimed in claim 1, wherein: the inclination detector comprises a shell, a main control circuit board and an inclination angle sensor, wherein a round hole is formed in one side of the shell, the main control circuit board is arranged inside the shell, the inclination angle sensor is arranged on the main control circuit board, and the main control circuit board is in signal connection with the inclination angle sensor.
7. The prefabricated earthquake-resistant support and hanger frame as claimed in claim 2, wherein: the right-angle connecting piece is a special-shaped channel steel nut, and teeth on two sides of the right-angle connecting piece can be embedded into the channel steel curled edge, so that the fastening and the fixing at any position in the channel steel curled edge are realized.
8. The prefabricated earthquake-resistant support and hanger frame as claimed in claim 1, wherein: the damping spring is a U-shaped damping spring.
9. The prefabricated earthquake-resistant support and hanger frame as claimed in claim 1, wherein: the U-shaped damping spring is made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110135933.1A CN112952674B (en) | 2021-02-01 | 2021-02-01 | Prefabricated antidetonation gallows |
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|---|---|---|---|
| CN202110135933.1A CN112952674B (en) | 2021-02-01 | 2021-02-01 | Prefabricated antidetonation gallows |
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| CN112952674A true CN112952674A (en) | 2021-06-11 |
| CN112952674B CN112952674B (en) | 2022-08-09 |
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| CN202110135933.1A Expired - Fee Related CN112952674B (en) | 2021-02-01 | 2021-02-01 | Prefabricated antidetonation gallows |
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| KR101632256B1 (en) * | 2016-01-29 | 2016-06-22 | 주식회사 이테크 | Seismic Switchgear |
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| CN112952674B (en) | 2022-08-09 |
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