CN212131642U - Connection structure of water conservancy pipeline - Google Patents
Connection structure of water conservancy pipeline Download PDFInfo
- Publication number
- CN212131642U CN212131642U CN202020437812.3U CN202020437812U CN212131642U CN 212131642 U CN212131642 U CN 212131642U CN 202020437812 U CN202020437812 U CN 202020437812U CN 212131642 U CN212131642 U CN 212131642U
- Authority
- CN
- China
- Prior art keywords
- rod
- pipeline
- groove
- tight
- water conservancy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model relates to a water conservancy pipeline's connection structure, connecting tube including a plurality of connects gradually, connecting tube's one end is provided with the grafting pipe, the grafting pipe is linked together and the coaxial line setting with connecting tube, the periphery wall laminating of grafting pipe in connecting tube's internal perisporium, the inserting groove with grafting pipe looks adaptation is seted up along its internal perisporium to the tip of connecting tube's the other end, the grafting pipe of connecting tube is pegged graft in the inserting groove rather than adjacent connecting tube, adjacent two be provided with between the connecting tube and be used for making the fixing mechanism that the grafting pipe was fixed in the inserting groove. It has the effect of ensuring that the alignment is maintained when the pipes are docked.
Description
Technical Field
The utility model belongs to the technical field of water conservancy pipeline's technique and specifically relates to a connection structure of water conservancy pipeline is related to.
Background
Hydraulic engineering is an engineering built for controlling and allocating surface water and underground water in the nature to achieve the purposes of removing harmful substances and benefiting benefits, is also called water engineering, in which a water conservancy pipeline is one of the most important components, and is connected through various connection modes due to the difference of the diameter and the material of the pipeline.
At present when carrying out butt joint connection to water conservancy pipeline, the flange that makes the pipeline usually docks mutually, then adopts the flange fixed connection that bolt and nut made two pipelines, because, water conservancy pipeline's diameter is general bigger, when making two water conservancy pipeline docks, two pipeline butt joints are easy to askew, and operating personnel is not good to two pipelines adjusting position, makes two pipelines align, wastes time and energy.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a connection structure of water conservancy pipeline, it has the effect that keeps aligning when guaranteeing the pipeline butt joint.
The utility model discloses a can realize through following technical scheme:
the utility model provides a connection structure of water conservancy pipeline, includes the connecting tube that a plurality of connected gradually, the one end of connecting tube is provided with the pipe of pegging graft, the pipe of pegging graft is linked together and coaxial line setting with the connecting tube, the periphery wall laminating of pipe of pegging graft in the internal perisporium of connecting tube, the inserting groove with grafting pipe looks adaptation is seted up along its internal perisporium to the tip of the other end of connecting tube, the pipe of pegging graft of connecting tube is in the inserting groove rather than adjacent connecting tube, adjacent two be provided with between the connecting tube and be used for making the fixing mechanism that the pipe of pegging graft is fixed in the inserting groove.
Through adopting above-mentioned technical scheme, when connecting fixedly to adjacent two connecting tube, make connecting tube's grafting pipe peg graft in rather than adjacent connecting tube's inserting groove, the inserting groove that inserts that the grafting pipe can be convenient, rethread fixed establishment makes the grafting pipe be fixed in the inserting groove, two indirect adjacent connecting tube that make dock, when the installation, need not all to look for the angle that the connecting tube aligns at every turn, the cooperation that adopts grafting pipe and inserting groove makes installation labour saving and time saving.
The utility model discloses further set up to: the fixed establishment is including rotating the dwang of connecting tube, setting up in the locating lever of dwang, setting up fixed block on the adjacent connecting tube of dwang and setting up the fixed subassembly on the fixed block, the constant head tank has been seted up to the fixed block, the locating lever is pegged graft in the constant head tank, the lateral wall of constant head tank has been seted up and has been held the chamber, fixed subassembly is including setting up in the locating plate that holds the intracavity and setting up in the threaded rod of fixed block, the threaded hole that the chamber is linked together is seted up and holds to the fixed block, the threaded rod is worn to locate behind the screw hole and is connected with the locating.
Through adopting above-mentioned technical scheme, rotate the dwang, make the relative connecting tube of dwang rotate, the dwang takes the locating lever to rotate when the pivoted, the locating lever is rotatory to the tip of locating lever peg graft in the constant head tank of fixed block, at this moment, rotatory threaded rod, make the threaded rod carry out screw drive in the threaded hole of fixed block, the locating plate moves to one side that is close to the locating lever under the transmission of threaded rod, until the locating plate when laminating mutually with the locating lever, compress tightly the locating lever in the constant head tank through the locating plate, make adjacent connecting tube connect fixedly.
The utility model discloses further set up to: the locating lever is provided with first sawtooth stupefied, the locating plate is provided with the second sawtooth stupefied, first sawtooth stupefied sets up with the stupefied looks meshing of second sawtooth.
Through adopting above-mentioned technical scheme, the stupefied intermeshing setting of second sawtooth of locating plate and locating lever has increased the frictional resistance between locating plate and the locating lever, further strengthens the tight intensity in top of locating plate to the locating lever.
The utility model discloses further set up to: and a hand wheel is arranged at one end of the threaded rod, which deviates from the positioning plate.
Through adopting above-mentioned technical scheme, the setting up of hand wheel is convenient to be operated the threaded rod.
The utility model discloses further set up to: and a jacking component used for preliminarily positioning the positioning rod in the positioning groove is arranged between the fixed block and the rotating rod.
Through adopting above-mentioned technical scheme, the setting up of the tight subassembly in top can make the locating lever keep not taking place the displacement when pegging graft in the constant head tank, is convenient for carry out fixed operation to the locating lever.
The utility model discloses further set up to: the tight groove in top has been seted up to the dwang, the holding tank has been seted up to the lateral wall in the tight groove in top, the tight subassembly in top is including setting up the tight pole in top on the fixed block, setting up the tight piece in top in the holding tank and setting up in the tight piece in top and lie in the compression elastic component between tight piece in top and the holding tank bottom, the dwang rotates to laminating when the fixed block, the tight pole top is tightly in the tight inslot in top, the tight piece top in top is tightly in the outer wall of tight pole.
Through adopting above-mentioned technical scheme, rotate the dwang, when the dwang rotates and the fixed block is laminated mutually, the tight pole in top on the fixed block is pegged graft in the tight inslot in top of dwang, and the tight pole in top is at the in-process of pegging graft, and the tight pole in top makes the tight piece in top move towards the holding tank in, when the tight pole in top is pegged graft completely in the tight inslot in top, the tight piece in top is under the effect of compression elastic component, and the tight piece in top shifts out and pushes up the outer wall in the tight pole in the holding tank from following.
The utility model discloses further set up to: the tight piece in top is the arc, the outer curved surface of tight piece in top sets up towards the tight pole in top, the tight pole in top is seted up with the tight piece matched with arc wall in top.
Through adopting above-mentioned technical scheme, the tight piece in top sets up to the arc, and the tight piece in top pushes up tightly in the arc wall of tight pole in top, makes the tight piece in top better carry out the tight effect in top to the tight pole in top.
The utility model discloses further set up to: one end of the tightening rod, which deviates from the fixed block, is set to be an arc surface.
Through adopting above-mentioned technical scheme, the setting of tight pole cambered surface of top conveniently pegs graft in the tight inslot in top of dwang has better promotion effect when the cambered surface of tight pole of top and the cambered surface looks butt of tight piece in top simultaneously.
The utility model discloses further set up to: the compression spring comprises a compression spring.
Through adopting above-mentioned technical scheme, compression spring's simple structure, simple to operate.
The utility model discloses further set up to: the fixing mechanisms are arranged into a plurality of groups, and the plurality of groups of fixing mechanisms are arranged at equal intervals along the circumferential direction of the connecting pipe.
Through adopting above-mentioned technical scheme, the setting of multiunit fixed establishment can strengthen the connection stability between two adjacent connecting tube, and circumference is equidistant arranges simultaneously, makes two adjacent connecting tube's atress even.
To sum up, the utility model discloses a beneficial technological effect does:
firstly, when two adjacent connecting pipelines are connected and fixed, the splicing pipe of the connecting pipeline is spliced in the splicing groove of the adjacent connecting pipeline, the splicing pipe can be conveniently inserted into the splicing groove, then the splicing pipe is fixed in the splicing groove through the fixing mechanism, the two adjacent connecting pipelines are indirectly butted, when in installation, the angle for aligning the connecting pipelines is not required to be found every time, and the time and labor are saved by adopting the matching of the splicing pipe and the splicing groove;
secondly, the rotating rod is rotated, when the rotating rod rotates to be attached to the fixed block, the tightening rod on the fixed block is inserted into the tightening groove of the rotating rod, the tightening rod enables the tightening piece to move towards the accommodating groove in the inserting process, and when the tightening rod is completely inserted into the tightening groove, the tightening piece moves out of the accommodating groove and tightly presses against the outer wall of the tightening rod under the action of the compression elastic part;
thirdly, the compression spring is simple in structure and convenient to install.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a partial explosion between adjacent connecting pipes according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of an embodiment of the invention;
FIG. 4 is an enlarged view of portion A of FIG. 3;
fig. 5 is an exploded view of the fixing block, the rotating rod and the positioning rod according to the embodiment of the present invention;
fig. 6 is an enlarged view of a portion B in fig. 5.
In the figure, 1, connecting a pipeline; 11. inserting a pipe; 12. inserting grooves; 211. a connecting portion; 2111. tightly pushing the groove; 212. a rotating part; 22. positioning a rod; 221. a first serrated edge; 23. a fixed block; 231. positioning a groove; 2311. an accommodating chamber; 24. a fixing assembly; 241. a threaded rod; 2411. a hand wheel; 242. positioning a plate; 2421. a second serrated edge; 3. a support block; 4. a rotating shaft; 51. a tightening rod; 511. an arc-shaped slot; 52. a compression spring; 53. and (5) tightly pressing the sheet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a water conservancy pipeline's connection structure, connecting tube 1 including a plurality of connects gradually, the welding of connecting tube 1's one end has grafting pipe 11, and grafting pipe 11 is linked together and the coaxial line setting with connecting tube 1, and in the one end of grafting pipe 11 stretched into connecting tube 1's periphery wall, the periphery wall of grafting pipe 11 was laminated in connecting tube 1's internal perisporium.
Referring to fig. 1 and 2, an insertion groove 12 adapted to the insertion pipe 11 is formed in the circumferential direction of the end portion of the other end of the connecting pipe 1 along the inner circumferential wall, the insertion pipe 11 of the connecting pipe 1 is inserted into the insertion groove 12 of the adjacent connecting pipe 1, and a fixing mechanism for fixing the insertion pipe 11 in the insertion groove 12 is arranged between the adjacent two connecting pipes 1.
Combine fig. 2, fig. 3, fig. 4, fixing mechanism sets up to four groups, four groups of fixing mechanism are along equal interval distribution of connecting tube 1's circumference, fixing mechanism includes the dwang, locating lever 22, fixed block 23 and fixed subassembly 24, connecting tube 1 has two supporting shoe 3 near the periphery wall welding that has the one end of grafting pipe 11, two supporting shoe 3 are arranged along connecting tube 1's radial interval, the dwang includes rotation portion 212 and connecting portion 211, the one end of rotation portion 212 is located between two supporting shoe 3 and rotates through axis of rotation 4 and supporting shoe 3 to be connected, the axis direction of axis of rotation 4 sets up with connecting tube 1's axis direction is perpendicular, the both ends of axis of rotation 4 weld with two supporting shoe 3 relative one side respectively, axis of rotation 4 runs through rotation portion 212 and rotates with rotation portion 212 and is connected.
The connecting portion 211 and the rotating portion 212 are welded at one end far away from the rotating shaft 4, the connecting portion 211 and the rotating portion 212 are arranged perpendicularly, the positioning rod 22 is welded at one end far away from the rotating portion 212 of the connecting portion 211, and the positioning rod 22 and the rotating portion 212 are arranged in parallel and are located on the same side of the connecting portion 211.
Fixed block 23 welds on connecting tube 1 keeps away from the periphery wall of grafting pipe 11 one end, and constant head tank 231 has been seted up to one side that fixed block 23 deviates from connecting tube 1, and the lateral wall of constant head tank 231 sets up to the arc, and connecting portion 211 rotates to when being parallel state with connecting tube 1, and locating lever 22 is pegged graft in constant head tank 231.
The side wall of the positioning slot 231 is provided with a containing cavity 2311, the fixing assembly 24 comprises a positioning plate 242 and a threaded rod 241, and the positioning plate 242 is movably arranged in the containing cavity 2311. The fixed block 23 is provided with a threaded hole communicated with the accommodating cavity 2311, the axis of the threaded rod 241 is consistent with the axis direction of the connecting pipeline 1, one end of the threaded rod 241 penetrates through the threaded hole of the fixed block 23 and then is rotatably connected with the positioning plate 242, and the threaded rod 241 is in threaded connection with the threaded hole. One end of the threaded rod 241 departing from the positioning plate 242 is located outside the accommodating cavity 2311 and is welded with a hand wheel 2411, the hand wheel 2411 is rotated, the threaded rod 241 performs thread transmission, and the threaded rod 241 pushes the positioning plate 242 to move and attach to the positioning rod 22.
One side of locating lever 22 towards locating lever 242 has welded a plurality of first sawtooth stupefied 221, a plurality of first sawtooth stupefied 221 evenly arrange along locating lever 22's length direction, one side of locating lever 242 towards locating lever 22 has welded a plurality of second sawtooth stupefied 2421, a plurality of second sawtooth stupefied 2421 evenly arrange along the direction of height of locating lever 242, when locating lever 242 laminated in locating lever 22, the stupefied 221 of first sawtooth set up with the stupefied 2421 intermeshing of second sawtooth.
Referring to fig. 5 and 6, a jacking assembly for primarily positioning the positioning rod 22 in the positioning groove 231 is arranged between the connecting portion 211 of the fixing block 23 and the rotating rod, the jacking assembly comprises a jacking rod 51, the jacking rod 51 is vertically arranged, one end of the jacking rod 51 is welded with one side of the fixing block 23 departing from the connecting pipeline 1 (refer to fig. 1), and the upper end of the jacking rod 51 is set to be an arc surface.
Connecting portion 211 has seted up tight groove 2111 towards one side of fixed block 23, and tight pole 51 in the tight groove 2111 of top can be pegged graft, and holding tank (not shown in the figure) has been seted up to the lateral wall in tight groove 2111 of top, and the tight subassembly in top still includes tight piece 53 in top and compression spring 52, and tight piece 53 in top is the arc, and the outer curved surface of tight piece 53 in top sets up to the tank bottom of holding tank dorsad, and the arc wall 511 with tight piece 53 looks adaptation in top is seted up to the outer wall of tight pole 51 in top. The compression spring 52 is positioned between the bottom of the accommodating groove and the tightening piece 53, one end of the compression spring 52 is fixedly connected with the bottom of the accommodating groove, and the other end of the compression spring is fixedly connected with the inner curved surface of the tightening piece 53. When the tightening rod 51 is tightened in the tightening groove 2111, the tightening sheet 53 is tightened in the arc-shaped groove 511 of the tightening rod 51 by the tightening sheet 53 under the action of the compression spring 52.
The implementation principle of the embodiment is as follows: when the adjacent connecting pipelines 1 need to be connected and fixed, the inserting pipe 11 of the connecting pipeline 1 is inserted into the inserting groove 12 of the adjacent connecting pipeline 1, the connecting part 211 on the rotating rod is rotated to drive the connecting part 211 to rotate around the rotating shaft 4, the positioning rod 22 is driven by the connecting part 211 to be inserted into the positioning groove 231 of the fixing block 23, when the positioning rod 22 is inserted into the positioning groove 231, the connecting part 211 is attached to the fixing block 23, the tightening groove 2111 of the connecting part 211 is matched with the tightening rod 51 on the fixing block 23, the tightening piece 53 in the accommodating groove is pressed against the arc-shaped groove 511 of the tightening rod 51, at the moment, the hand wheel 2411 is rotated to drive the hand wheel 2411 to drive the threaded rod 241 to perform threaded transmission in the threaded hole of the fixing block 23, the positioning plate 242 moves towards one side close to the positioning rod 22 under the transmission of the threaded rod 241 until the second sawtooth ridge 2421 of the positioning plate 242 is meshed with the first sawtooth ridge 221 of the positioning rod 22, at this time, the positioning rod 22 is fixed in the positioning groove 231.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. The utility model provides a connection structure of water conservancy pipeline, includes connecting tube (1) that a plurality of connects gradually, its characterized in that: one end of the connecting pipeline (1) is provided with an inserting pipe (11), the inserting pipe (11) is communicated with the connecting pipeline (1) and is coaxially arranged, the outer peripheral wall of the inserting pipe (11) is attached to the inner peripheral wall of the connecting pipeline (1), an inserting groove (12) matched with the inserting pipe (11) is formed in the end portion of the other end of the connecting pipeline (1) along the inner peripheral wall of the end portion of the connecting pipeline, the inserting pipe (11) of the connecting pipeline (1) is inserted into the inserting groove (12) of the adjacent connecting pipeline (1), and a fixing mechanism used for enabling the inserting pipe (11) to be fixed in the inserting groove (12) is arranged between the connecting pipelines (1).
2. The water conservancy pipeline connecting structure according to claim 1, characterized in that: the fixing mechanism comprises a rotating rod rotatably connected with the connecting pipeline (1), a positioning rod (22) arranged on the rotating rod, a fixing block (23) arranged on the connecting pipeline (1) adjacent to the rotating rod and a fixing component (24) arranged on the fixing block (23), the fixing block (23) is provided with a positioning groove (231), the positioning rod (22) is inserted into the positioning groove (231), the side wall of the positioning groove (231) is provided with a containing cavity (2311), the fixing component (24) comprises a positioning plate (242) arranged in the containing cavity (2311) and a threaded rod (241) arranged on the fixing block (23), the fixing block (23) is provided with a threaded hole communicated with the containing cavity (2311), the threaded rod (241) is rotatably connected with the positioning plate (242) after penetrating through the threaded hole, and the threaded rod (241) is in threaded connection with the threaded hole, the positioning plate (242) is attached to the positioning rod (22).
3. The water conservancy pipeline connecting structure according to claim 2, characterized in that: the positioning rod (22) is provided with a first sawtooth edge (221), the positioning plate (242) is provided with a second sawtooth edge (2421), and the first sawtooth edge (221) and the second sawtooth edge (2421) are meshed.
4. The water conservancy pipeline connecting structure according to claim 2, characterized in that: and a hand wheel (2411) is arranged at one end of the threaded rod (241) deviating from the positioning plate (242).
5. The water conservancy pipeline connecting structure according to claim 2, characterized in that: a jacking assembly used for enabling the positioning rod (22) to be preliminarily positioned in the positioning groove (231) is arranged between the fixing block (23) and the rotating rod.
6. A water conservancy pipeline's connection structure according to claim 5, characterized in that: tight groove in top (2111) has been seted up to the dwang, the holding tank has been seted up to the lateral wall in the tight groove in top (2111), the tight subassembly in top is including setting up tight pole in top (51) on fixed block (23), setting up tight piece in top (53) in the holding tank and set up in tight piece in top (53) and be located the compression elastic component between tight piece in top (53) and the holding tank bottom, the dwang rotates when laminating in fixed block (23), tight pole in top (51) top is tightly in tight groove in top (2111), tight piece in top (53) top is tightly in the outer wall of tight pole in top (51).
7. A water conservancy pipeline's connection structure according to claim 6, characterized in that: the jacking sheet (53) is arc-shaped, the outer curved surface of the jacking sheet (53) is arranged towards the jacking rod (51), and the jacking rod (51) is provided with an arc-shaped groove (511) matched with the jacking sheet (53).
8. The water conservancy pipeline connecting structure according to claim 7, characterized in that: one end of the tightening rod (51) departing from the fixed block (23) is set to be an arc surface.
9. A water conservancy pipeline's connection structure according to claim 6, characterized in that: the compression spring includes a compression spring (52).
10. The water conservancy pipeline connecting structure according to claim 1, characterized in that: the fixing mechanisms are arranged into a plurality of groups, and the plurality of groups of fixing mechanisms are arranged at equal intervals along the circumferential direction of the connecting pipeline (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020437812.3U CN212131642U (en) | 2020-03-30 | 2020-03-30 | Connection structure of water conservancy pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020437812.3U CN212131642U (en) | 2020-03-30 | 2020-03-30 | Connection structure of water conservancy pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212131642U true CN212131642U (en) | 2020-12-11 |
Family
ID=73672152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020437812.3U Active CN212131642U (en) | 2020-03-30 | 2020-03-30 | Connection structure of water conservancy pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212131642U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113154151A (en) * | 2021-03-11 | 2021-07-23 | 江苏久聚建设工程有限公司 | Pipeline connecting structure for municipal water supply and drainage |
| CN116379233A (en) * | 2023-06-06 | 2023-07-04 | 铁氟龙防腐科技(江苏)有限公司 | Steel lining tetrafluoro pipeline with connecting and reinforcing mechanism |
-
2020
- 2020-03-30 CN CN202020437812.3U patent/CN212131642U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113154151A (en) * | 2021-03-11 | 2021-07-23 | 江苏久聚建设工程有限公司 | Pipeline connecting structure for municipal water supply and drainage |
| CN116379233A (en) * | 2023-06-06 | 2023-07-04 | 铁氟龙防腐科技(江苏)有限公司 | Steel lining tetrafluoro pipeline with connecting and reinforcing mechanism |
| CN116379233B (en) * | 2023-06-06 | 2023-08-18 | 铁氟龙防腐科技(江苏)有限公司 | Steel lining tetrafluoro pipeline with connecting and reinforcing mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212131642U (en) | Connection structure of water conservancy pipeline | |
| CN210196642U (en) | Pipeline installation device | |
| CN210281144U (en) | Automatic pipeline welding device | |
| CN216503219U (en) | Full-automatic tubular pile butt welding robot | |
| CN109595408B (en) | Screw-in type pipeline connector | |
| CN213916907U (en) | Socket welding structure for pipe fitting machining | |
| CN210499060U (en) | Clamp for clamping and fixing bathroom accessories | |
| CN112413248A (en) | Sealing connection structure for pump valve pipeline | |
| CN218455044U (en) | Seamless steel pipe for coal mine machinery | |
| CN216666805U (en) | Underwater pipeline connecting device | |
| CN215568691U (en) | Low temperature resistant stainless steel flange easy to assemble | |
| CN114151632A (en) | Underwater pipeline connecting device and pipeline connecting method | |
| CN218063788U (en) | Oblique shaft type variable pump convenient for butt joint of pipelines | |
| CN209774473U (en) | Anchor clamps are used in firearms assembly | |
| CN108127383B (en) | A kind of replacing options for crane oil inlet pipe | |
| CN109237159B (en) | Stainless steel pipe joint | |
| CN112361094A (en) | Corrosion-resistant spiral steel pipe with joint self-locking structure | |
| CN211638868U (en) | Rapid aligning device for large-diameter pipeline installation | |
| CN212153558U (en) | Connecting device for municipal water supply pipeline | |
| CN219274996U (en) | Welding jig of U type high pressure pipe fitting | |
| CN214992956U (en) | Grouting machine for road reinforcement | |
| CN216298435U (en) | Rotary welding device for pipe fittings | |
| CN220366086U (en) | Sewage pipeline connection structure | |
| CN214147035U (en) | Quick leaking stoppage instrument of jar body and pipeline connection root | |
| CN116624681B (en) | Hydraulic rubber tube anti-drop device for hydraulic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |