CN211398769U - Pipe connection structure that antidetonation support was used - Google Patents
Pipe connection structure that antidetonation support was used Download PDFInfo
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- CN211398769U CN211398769U CN201922154036.6U CN201922154036U CN211398769U CN 211398769 U CN211398769 U CN 211398769U CN 201922154036 U CN201922154036 U CN 201922154036U CN 211398769 U CN211398769 U CN 211398769U
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Abstract
The utility model discloses a pipe connection structure that antidetonation support was used, characterized by, including connecting the pipe, connect the inside joint that is equipped with in pipe both ends, connect and be equipped with the fastener of connecting usefulness with the form of running through between pipe and the joint. The utility model has the advantages that the connecting circular pipe replaces channel steel to play a connecting role, and compared with the unilateral connection and the asymmetry of the channel steel, the connecting circular pipe has good structural symmetry and high connection stability; the joint stretches into and connects the intraductal fixed of pipe, and fastener through connection pipe and articulate forms the point of two symmetries to connecting the pipe to can have two symmetrical points to apply force on connecting the pipe when connecting the pipe and receiving vibrations, thereby prevent to connect the pipe because unilateral atress and deformation, the packing limiting displacement that the cooperation connects can improve the reliability of connecting the pipe, has improved the shock resistance of antidetonation support.
Description
Technical Field
The utility model belongs to the technical field of the antidetonation support, specifically a pipe connection structure that antidetonation support was used.
Background
In view of the great destructiveness of earthquakes, the earthquake-proof performance is an important construction index which must be considered before building construction, and by arranging the earthquake-proof facilities, when an earthquake occurs, earthquake damage can be relieved, and secondary disasters can be reduced or prevented as much as possible, so that casualties and property loss are reduced. The building is usually provided with water supply, drainage, fire protection, heating, ventilation, air conditioning, gas, electric power, heating power, communication and other electromechanical engineering facilities, the engineering facilities are all provided with pipelines, the laying of the pipelines in the building is an important factor influencing the anti-seismic performance of the building, so the arrangement of the anti-seismic support outside the pipelines is also an important consideration for building construction, and the pull rod of the existing anti-seismic support adopts a channel steel structure, has uneven tensile force and cannot exert the best effect. For example, patent number CN 2019106437965 discloses in 2019, 11.5.2019 "an anti-seismic support is indulged to crane span structure side" in chinese patent literature, which includes the crane span structure, the bottom fixed mounting of crane span structure has the stull channel-section steel, the equal fixed mounting in both ends of stull channel-section steel has the vertical channel-section steel of vertical setting, two the equal fixed mounting in bottom of vertical channel-section steel has the indulging of slope setting to prop the channel-section steel, and the one side that two vertical channel-section steels kept away from each other all is equipped with the antidetonation connecting piece of fixed mounting on the stull channel-section steel, one side fixed. The side-brace steel channel has the defects that the side-brace steel channel is used as a pull rod and needs to bear lateral thrust and bending moment, but the steel channel is of an open structure, and has an opening at one side, so that stress concentration is easy to occur due to an asymmetric structure when the surface of the steel channel is subjected to the thrust and the bending moment, the pull rod made of the steel channel is easy to deform, and the shock resistance of the pull rod is not reliable enough.
Disclosure of Invention
Based on the problem, the utility model provides a pipe connection structure that antidetonation support was used, the original channel-section steel structure that adopts of pull rod in the antidetonation support replaces with the pipe, and the atress is even, prevents that surface stress from concentrating, has improved the shock resistance of antidetonation support.
In order to realize the purpose of the invention, the utility model adopts the following technical scheme: a circular tube connecting structure for an anti-seismic support is characterized by comprising a connecting circular tube, connectors are arranged inside two ends of the connecting circular tube, and a connecting fastener is arranged between the connecting circular tube and the connectors in a penetrating mode.
The round pipe connecting structure can be used as a pull rod and used for supporting and pulling a bracket of a limiting pipeline to realize an anti-seismic function, can be used for various anti-seismic bracket occasions such as a cable bridge, a single pipe, a single rectangular air pipe, a plurality of pipes, a plurality of square pipes, a single pipe door and the like, and is wide in application field; the fastener can adopt a pin, a lock ring or a bolt and nut matched structure to realize locking of the joint and the connecting circular tube, the connecting circular tube replaces channel steel to play a connecting role, and compared with unilateral connection and asymmetry of the channel steel, the connecting circular tube has good structural symmetry and high connection stability; the joint stretches into and connects the intraductal fixed of pipe, and fastener through connection pipe and articulate forms the point of two symmetries to connecting the pipe to can have two symmetrical points to apply force on connecting the pipe when connecting the pipe and receiving vibrations, thereby prevent to connect the pipe because unilateral atress and deformation, the packing limiting displacement that the cooperation connects can improve the reliability of connecting the pipe, has improved the shock resistance of antidetonation support.
Preferably, the joint comprises a connecting section matched with the inner diameter of the connecting circular pipe, the connecting section extends into the connecting circular pipe, and the joint is further provided with a hinge section extending out of the circular pipe. In the linkage segment stretched into the connection pipe, made the connection pipe form similar solid construction's whole with joint complex tip position to can prevent to connect the conquassation deformation of pipe tip, can improve the intensity of joint with being connected the pipe junction, prevent to connect the pipe and warp, improve and connect pipe structural strength, improve the shock resistance who connects the pipe.
Preferably, the connecting section has a cylindrical shape, the hinge section has a semi-cylindrical shape, and the circular arc side surface of the hinge section is located on the extension surface of the outer circumferential side surface of the connecting section. When the hinged section is connected with other parts, the hinged center is just positioned on the axis of the connecting section, so that the stability and the connection reliability of the hinged part of the joint can be improved.
Preferably, two opposite through holes are respectively formed in the side surfaces of the two ends of the connecting circular pipe; the connecting line of the two through holes which are connected with the same end of the round pipe vertically passes through the axis of the round pipe; the joint is provided with a mounting hole matched with the through hole, the fastener comprises a fastening bolt penetrating through the mounting hole and the corresponding through hole, and the fastening bolt is connected with a fastening nut matched with the fastening bolt. The fastening bolt penetrates through the two through holes and the mounting hole, two opposite connecting points are formed on the side face of the connecting circular tube, and symmetrical supporting force is formed for the connecting circular tube, so that bending deformation of the wall face of the connecting circular tube due to stress on only one end of the connecting circular tube can be prevented, and the reliability of the connecting circular tube is improved.
Preferably, the mounting hole is internally provided with a matching thread matching with the fastening bolt. The fastening bolt is matched with the fastening nut after being screwed with the matched threads in the mounting hole to form a double-layer spaced thread screwing structure, and the connection is reliable and stable.
Preferably, the end part of the joint extending into the connecting circular tube is provided with a transition chamfer. The convenient joint is inserted in connecting the pipe, can prevent to connect the tip in connecting the pipe and cause stress concentration to connecting the pipe, guarantees to connect the life of pipe.
Preferably, the connecting circular pipe is made of steel materials. The structure is high in strength and convenient to produce and manufacture.
Preferably, the surface of the connecting circular pipe is provided with a zinc coating. Has the functions of beauty and rust prevention.
To sum up, the beneficial effects of the utility model are that: the connecting circular pipe has high stability, is not easy to damage and has high anti-seismic performance; the connecting circular tube is convenient to form; the installation mode of the connecting circular pipe and the joint is reliable and convenient; the production process of the connecting circular tube is simple, and the cost is low; the joint of the joint and the connecting circular pipe is high in reliability and not easy to damage, and the pull rod formed by the connecting circular pipe and the joint is used for the anti-seismic support, so that the anti-seismic stability of the anti-seismic support can be improved, and the anti-seismic support is convenient to install.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of the middle connection pipe of the present invention.
Fig. 3 is a schematic structural diagram of the middle joint of the present invention.
Fig. 4 is the utility model discloses be applied to single tube side direction antidetonation support's structural schematic.
Fig. 5 is the structure schematic diagram of the utility model discloses be applied to multitube side direction antidetonation support.
Fig. 6 is the utility model discloses be applied to the structure sketch map of rectangle tuber pipe side direction antidetonation support.
Fig. 7 is a schematic structural view of the lateral anti-seismic bracket applied to a cable bridge.
Fig. 8 is the utility model discloses be applied to single tube door type frame pipe side direction antidetonation support's structural schematic.
Fig. 9 is the utility model discloses be applied to many square pipes side direction antidetonation support's schematic structure.
Fig. 10 is a schematic structural view of the present invention applied to a single-tube lateral and longitudinal anti-seismic support.
Figure 11 is a schematic structural view of the utility model applied to a multi-tube lateral and longitudinal anti-seismic support.
Fig. 12 is a schematic structural view of the utility model discloses be applied to rectangle tuber pipe side direction and vertical antidetonation support.
Fig. 13 is a schematic structural view of the lateral and longitudinal anti-seismic bracket of the cable tray of the present invention.
Fig. 14 is a schematic structural view of the present invention applied to the lateral and longitudinal anti-seismic supports of the single-tube door type frame tube.
Fig. 15 is the utility model discloses be applied to many square pipe side direction and vertical antidetonation support's schematic structure.
Wherein: connecting circular tube 1 through hole 11 joint 2 connecting section 21 hinging section 22 mounting hole 23 transition chamfer 24 fastening bolt 3 fastening nut 4 concrete floor 6 expanding bottom anchor 61 anti-seismic connecting support 62U-shaped tube bundle 7 ohm type tube bundle 8 rectangular air pipe 9 cable bridge rack 10 single door type frame pipe 20 square pipe 30.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 3, embodiment 1 is a circular tube connection structure for an anti-seismic support, and is characterized by comprising a connection circular tube 1, wherein the connection circular tube 1 is made of a galvanized steel tube. The joints 2 are arranged in the two ends of the connecting circular tube 1, and the fastening piece for connection is arranged between the connecting circular tube 1 and the joints 2 in a penetrating mode. Two opposite through holes 11 are respectively arranged on the side surfaces of the two ends of the connecting circular tube 1; the connection line of the two through holes 11 connected with the same end of the circular tube 1 vertically passes through the axis of the circular tube. The joint 2 comprises a connecting section 21 matched with the inner diameter of the connecting circular tube 1, the connecting section 21 extends into the connecting circular tube 1, and the joint 2 is further provided with a hinging section 22 extending out of the circular tube. The shape of the connecting section 21 is cylindrical, the shape of the hinge section 22 is semi-cylindrical, and the circular arc side surface of the hinge section 22 is located on the extension surface of the outer circumferential side surface of the connecting section 21. When the hinge section 22 is connected with other parts, the hinge center is just positioned on the axis of the connecting section 21, so that the stability and the connection reliability of the hinge part of the joint 2 can be improved. Be equipped with the mounting hole 23 of cooperation through-hole 11 on the joint 2, the fastener is including running through mounting hole 23 and the fastening bolt 3 that corresponds through-hole 11, and fastening bolt 3 connects the fastening nut 4 rather than the adaptation. The fitting hole 23 is provided with a fitting thread for fitting the fastening bolt 3. The end of the joint 2 extending into the connecting circular tube 1 is provided with a transition chamfer 24. The joint 2 and the connecting circular pipe 1 are combined to form a pull rod, and two ends of the pull rod are respectively connected with a connecting support for supporting a limiting pipeline and a concrete floor slab. The connecting circular tube 1 is high in stability, not prone to damage and high in anti-seismic performance; the connecting circular tube 1 is convenient to form; the installation mode of the connecting circular tube 1 and the joint 2 is reliable and convenient; the production process of the connecting circular tube 1 is simple and the cost is low; the joint of the joint 2 and the connecting circular pipe 1 is high in reliability and not easy to damage, and the pull rod formed by the connecting circular pipe 1 and the joint 2 is used in the anti-seismic support, so that the anti-seismic stability of the anti-seismic support can be improved, and the anti-seismic support is convenient to install.
As shown in fig. 4, the circular tube connecting structure is applied to a single-tube lateral anti-seismic support, two ends of a connecting circular tube 1 are fixedly connected with a joint 2 through a fastening bolt 3, the joint 2 at the upper end of the connecting circular tube 1 is hinged on an anti-seismic connecting support 62, and the anti-seismic connecting support 62 is fixed on a concrete floor 6 through an expanded anchor bolt 61; connect the joint 2 of pipe 1 lower extreme to articulate and fix on the linking bridge of U-shaped pipe bundle 7 upper end, the upper end center of linking bridge is spacing through vertical support, connects pipe 1 and plays reliable tensile and antidetonation effect as the collateral branch support, and articulated center just lies in the linkage segment and connects on the axis of pipe 1 when connecting 2 and external part are articulated to can improve the stability and the connection reliability who connects 2 articulated departments.
In fig. 5, the circular tube connection structure is applied to a multi-tube lateral anti-seismic support, and comprises a connection support and three ohmic tube bundles 8 on the connection support, wherein two longitudinal supports are vertically connected to the upper sides of two ends of the connection support. The two ends of the connecting circular pipe 1 are fixed with the joints 2, the joint 2 at the upper end of the connecting circular pipe 1 is hinged on an anti-seismic connecting bracket 62, and the anti-seismic connecting bracket 62 is fixed on the concrete floor 6 through a bottom expanding anchor bolt 61; the joint 2 at the lower end of the connecting circular tube 1 is hinged and fixed on a vertical support which is vertically arranged, and the left-right shaking of the connecting support is limited by the connecting circular tube 1.
In fig. 6, the circular tube connecting structure is applied to a lateral anti-seismic support of a rectangular air duct, two ends of a connecting circular tube 1 are fixed with joints 2, the joint 2 at the upper end of the connecting circular tube 1 is hinged on an anti-seismic connecting support 62, and the anti-seismic connecting support 62 is fixed on a concrete floor 6 through a bottom-expanding anchor bolt 61; the joint 2 connected with the lower end of the circular tube 1 is hinged and fixed on the upper side of the connecting bracket of the rectangular air pipe 9. The upper sides of the two ends of the connecting support are vertically connected with two longitudinal supports which are fixed with the concrete floor 6.
In fig. 7, the circular tube connecting structure is applied to a lateral anti-seismic support of a cable bridge, two ends of a connecting circular tube 1 are fixed with a joint 2, the joint 2 at the upper end of the connecting circular tube 1 is hinged on an anti-seismic connecting support 62, and the anti-seismic connecting support 62 is fixed on a concrete floor 6 through a bottom-expanding anchor bolt 61; the joint 2 at the lower end of the connecting circular tube 1 is hinged and fixed on the upper side of the connecting bracket of the cable bridge 10. The upper sides of the two ends of the connecting support are vertically connected with two longitudinal supports which are fixed with the concrete floor 6.
In fig. 8, the circular tube connection structure is applied to the single-tube-door-shaped frame tube 20 lateral anti-seismic support, the connection support where the single-tube-door-shaped frame tube 20 is located realizes fixed connection with the concrete floor slab 6 through the longitudinal support of two vertical settings, the lower end of the pull rod structure formed by the connection circular tube 1 and the two-end connector 2 is fixed on the side of the longitudinal support, the upper end connector 2 of the connection circular tube 1 is fixed on an anti-seismic connection support 62 through a hinged mode, and the anti-seismic connection support 62 is fixed with the concrete floor slab 6 through the bottom-expanding anchor bolt 61. Is suitable for water supply and fire fighting systems with the DN 150.
In fig. 9, the circular pipe connection structure is applied to a lateral anti-seismic support of a plurality of square pipes 30. At least two square pipes 30 are fixed on a connecting support through limiting parts, the connecting support is fixedly connected with the concrete floor 6 through two vertically arranged longitudinal supports, the lower end of a pull rod structure consisting of a connecting circular pipe 1 and two end connectors 2 is fixed on the side surface of the longitudinal support, the upper end connector 2 of the connecting circular pipe 1 is fixed on an anti-seismic connecting support 62 in a hinged mode, and the anti-seismic connecting support 62 is fixed with the concrete floor 6 through an expanding anchor bolt 61.
In fig. 10, the circular tube connection structure is applied to a mono-tube lateral and longitudinal anti-seismic bracket. Figure 10 differs from the seismic support shown in figure 4 in that an inclined auxiliary tie-rod is provided outside the longitudinal support; the auxiliary pull rod also comprises a connecting circular pipe 1 and a connector 2, the connector 2 at the lower end of the connecting circular pipe 1 of the auxiliary pull rod is connected and fixed on the longitudinal support, and the connector 2 at the upper end of the connecting circular pipe 1 of the auxiliary pull rod is fixedly connected with the concrete floor 6 through an anti-seismic connecting support and a bottom expanding anchor bolt. The plane of the parallel longitudinal support of the auxiliary pull rod is vertical to the plane of the parallel longitudinal support of the lateral pull rod, so that the pull rods in two directions are provided for the longitudinal support, and the lateral and longitudinal anti-seismic effect is realized.
In fig. 11, the round tube connection joints are applied to multi-tube lateral and longitudinal seismic supports. Fig. 11 differs from the seismic brace shown in fig. 5 in that an auxiliary tie bar is provided on each side of the two longitudinal supports; the auxiliary pull rod also comprises a connecting circular tube 1 and a connector 2, the connector 2 at the lower end of the connecting circular tube 1 of the auxiliary pull rod is connected and fixed on a connecting support provided with three ohmic tube bundles 8, and the connector 2 at the upper end of the connecting circular tube 1 of the auxiliary pull rod is fixedly connected with a concrete floor 6 through an anti-seismic connecting support and an expanded-bottom anchor bolt. The plane of the parallel longitudinal support of the auxiliary pull rod is vertical to the plane of the parallel longitudinal support of the lateral pull rod, so that the pull rods in two directions are provided for the longitudinal support, and the lateral and longitudinal anti-seismic effect is realized.
In fig. 12, the circular tube connection structure is applied to lateral and longitudinal anti-seismic supports of the rectangular air duct 9. Fig. 12 differs from the seismic brace shown in fig. 6 in that an auxiliary tie rod is provided on each side of the two longitudinal supports; the auxiliary pull rod also comprises a connecting circular pipe 1 and a connector 2, the connector 2 at the lower end of the connecting circular pipe 1 of the auxiliary pull rod is connected and fixed on the longitudinal support, and the connector 2 at the upper end of the connecting circular pipe 1 of the auxiliary pull rod is fixedly connected with the concrete floor 6 through an anti-seismic connecting support and a bottom expanding anchor bolt. The plane of the parallel longitudinal support of the auxiliary pull rod is vertical to the plane of the parallel longitudinal support of the lateral pull rod, so that the pull rods in two directions are provided for the longitudinal support, and the lateral and longitudinal anti-seismic effect is realized.
In fig. 13, the circular tube connection structure is applied to lateral and longitudinal seismic supports of the cable tray 10. Figure 13 differs from the seismic brace shown in figure 7 in that an auxiliary tie bar is provided on each side of the two longitudinal supports; the auxiliary pull rod also comprises a connecting circular pipe 1 and a connector 2, the connector 2 at the lower end of the connecting circular pipe 1 of the auxiliary pull rod is connected and fixed on the longitudinal support, and the connector 2 at the upper end of the connecting circular pipe 1 of the auxiliary pull rod is fixedly connected with the concrete floor 6 through an anti-seismic connecting support and a bottom expanding anchor bolt. The plane of the parallel longitudinal support of the auxiliary pull rod is vertical to the plane of the parallel longitudinal support of the lateral pull rod, so that the pull rods in two directions are provided for the longitudinal support, and the lateral and longitudinal anti-seismic effect is realized.
In fig. 14, the circular pipe coupling structure is applied to the lateral and longitudinal anti-seismic brackets of the single-pipe gate type frame pipe 20. Figure 14 differs from the seismic brace shown in figure 8 in that an auxiliary tie bar is provided on each side of the two longitudinal supports; the auxiliary pull rod also comprises a connecting circular tube 1 and a connector 2, the connector 2 at the lower end of the connecting circular tube 1 of the auxiliary pull rod is connected and fixed on a connecting support provided with a single-tube-door-shaped frame tube 20, and the connector 2 at the upper end of the connecting circular tube 1 of the auxiliary pull rod is fixedly connected with the concrete floor 6 through an anti-seismic connecting support and an expanding bottom anchor bolt. The plane of the parallel longitudinal support of the auxiliary pull rod is vertical to the plane of the parallel longitudinal support of the lateral pull rod, so that the pull rods in two directions are provided for the longitudinal support, and the lateral and longitudinal anti-seismic effect is realized.
In fig. 15, the circular pipe coupling structure is applied to lateral and longitudinal anti-seismic supports of a plurality of square pipes 30. Figure 15 differs from the seismic brace shown in figure 9 in that an auxiliary tie bar is provided on each side of the two longitudinal supports; the auxiliary pull rod also comprises a connecting circular pipe 1 and a connector 2, the connector 2 at the lower end of the connecting circular pipe 1 of the auxiliary pull rod is fixedly connected on a connecting support provided with two square pipes 30, and the connector 2 at the upper end of the connecting circular pipe 1 of the auxiliary pull rod is fixedly connected on a concrete floor 6 through an anti-seismic connecting support and an expanding bottom anchor bolt. The plane of the parallel longitudinal support of the auxiliary pull rod is vertical to the plane of the parallel longitudinal support of the lateral pull rod, so that the pull rods in two directions are provided for the longitudinal support, and the lateral and longitudinal anti-seismic effect is realized.
It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner of practicing the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and examples. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.
Claims (8)
1. A circular tube connecting structure for an anti-seismic support is characterized by comprising a connecting circular tube, connectors are arranged inside two ends of the connecting circular tube, and a connecting fastener is arranged between the connecting circular tube and the connectors in a penetrating mode.
2. A tubular connection structure for an earthquake-proof support as set forth in claim 1, wherein said joint comprises a connection section adapted to an inner diameter of the connection tubular, the connection section extending into the connection tubular, and the joint further comprises a hinge section extending out of the tubular.
3. A circular tube coupling structure for an earthquake-proof support as claimed in claim 2, wherein the coupling section is cylindrical in shape, the hinge section is semi-cylindrical in shape, and the arc side of the hinge section is located on the extension plane of the outer circumferential side of the coupling section.
4. A circular tube connecting structure for an earthquake-proof support according to claim 1, 2 or 3, wherein two opposite through holes are respectively formed in the side surfaces of the two ends of the connecting circular tube; the connecting line of the two through holes which are connected with the same end of the round pipe vertically passes through the axis of the round pipe; the joint is provided with a mounting hole matched with the through hole, the fastener comprises a fastening bolt penetrating through the mounting hole and the corresponding through hole, and the fastening bolt is connected with a fastening nut matched with the fastening bolt.
5. A tubular connection structure for an earthquake-proof support as recited in claim 4, wherein the fitting hole is provided therein with a fitting thread for fitting the fastening bolt.
6. A tubular connection for an earthquake-resistant support as claimed in claim 1, 2 or 3, wherein the end of the joint extending into the connecting tubular is provided with a transition chamfer.
7. A round pipe connecting structure for an earthquake-proof support according to claim 1, wherein the connecting round pipe is made of steel material.
8. A circular pipe connecting structure for an anti-seismic bracket according to claim 1 or 7, wherein a zinc plating layer is provided on the surface of the connecting circular pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922154036.6U CN211398769U (en) | 2019-12-04 | 2019-12-04 | Pipe connection structure that antidetonation support was used |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922154036.6U CN211398769U (en) | 2019-12-04 | 2019-12-04 | Pipe connection structure that antidetonation support was used |
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| CN211398769U true CN211398769U (en) | 2020-09-01 |
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| CN201922154036.6U Active CN211398769U (en) | 2019-12-04 | 2019-12-04 | Pipe connection structure that antidetonation support was used |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255950A (en) * | 2019-12-04 | 2020-06-09 | 浙江航鑫支吊架有限公司 | Pipe connection structure and antidetonation support that antidetonation support was used |
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2019
- 2019-12-04 CN CN201922154036.6U patent/CN211398769U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255950A (en) * | 2019-12-04 | 2020-06-09 | 浙江航鑫支吊架有限公司 | Pipe connection structure and antidetonation support that antidetonation support was used |
| CN111255950B (en) * | 2019-12-04 | 2022-04-22 | 浙江航鑫支吊架有限公司 | Pipe connection structure and antidetonation support that antidetonation support was used |
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