CN114645983B - Disassembly-free inclined clamping mechanism for pipeline connection - Google Patents
Disassembly-free inclined clamping mechanism for pipeline connection Download PDFInfo
- Publication number
- CN114645983B CN114645983B CN202210333949.8A CN202210333949A CN114645983B CN 114645983 B CN114645983 B CN 114645983B CN 202210333949 A CN202210333949 A CN 202210333949A CN 114645983 B CN114645983 B CN 114645983B
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- clamping ring
- clamping
- ring
- groove
- block
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- 230000000149 penetrating effect Effects 0.000 claims description 9
- 230000007306 turnover Effects 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims 1
- 230000010354 integration Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention relates to a pipeline connecting device, in particular to a disassembly-free inclined clamping mechanism for pipeline connection, which comprises a first clamping ring and a second clamping ring which are semicircular, wherein inclined openings are formed at the end parts of the first clamping ring and the second clamping ring, and the inclined openings at the two ends of the first clamping ring and the second clamping ring face opposite directions; a clamping assembly is arranged between the end part of the first clamping ring and the end part of the second clamping ring, and comprises a swinging structure arranged on the first clamping ring or the second clamping ring and a clamping block arranged on the second clamping ring or the first clamping ring; the swing structure is connected with a telescopic structure movably arranged on the first clamping ring or the second clamping ring. Through set up a set of block subassembly respectively at the both ends of first snap ring and second snap ring makes when first snap ring and second snap ring block with the two closure integration, can be in the same place two snap rings firm cohesion under the condition that need not demolish the bolt to seal the end of two pipelines of connection and include together, play the function of quick connect, and dismouting is convenient quick.
Description
Technical Field
The invention relates to a pipeline connecting device, in particular to a disassembly-free inclined clamping mechanism for pipeline connection.
Background
Pipe connection is a very important ring in engineering construction, and is directly related to engineering quality. With the rapid development of the pipeline industry, the method for connecting pipelines is more and more, but different pipelines have advantages and disadvantages and also have different purposes, and the correct connection mode is the skill of engineering personnel.
Currently available pipeline connection modes include threaded connection, welding, socket connection, adhesive connection, flange connection, connector connection, single groove connection, clamping sleeve connection and hot melting connection; wherein the welded, bonded, and hot melt connections are non-detachable connections.
Although threaded connection, socket connection, flange connection, connector connection, single groove connection and clamping sleeve connection can be realized repeatedly, the disassembly and assembly process is complicated, and the disassembly and assembly can be completed only by disassembling the bolts, so that time and labor are wasted.
Disclosure of Invention
The invention aims to provide a disassembly-free inclined clamping mechanism for pipeline connection, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the disassembly-free inclined clamping mechanism for the pipeline connection comprises a first clamping ring and a second clamping ring which are semicircular and have the same size, inclined openings are formed in the end parts of the first clamping ring and the second clamping ring, and the inclined openings at the two ends of the first clamping ring and the second clamping ring face opposite directions;
a clamping assembly is arranged between the end part of the first clamping ring and the end part of the second clamping ring, and comprises a swinging structure arranged on the first clamping ring or the second clamping ring and a clamping block arranged on the second clamping ring or the first clamping ring;
the swing structure is connected with a telescopic structure movably arranged on the first clamping ring or the second clamping ring; when the first clamping ring and the second clamping ring are clamped, the second clamping ring or the inclined opening at the end part of the first clamping ring extrudes the telescopic structure to enable the swinging structure to be overturned onto the clamping block, and the first clamping ring and the second clamping ring are locked to form a complete arc shape.
The invention further defines the scheme that: the one end of first snap ring and second snap ring be provided with the shrink groove of the axis parallel of first snap ring or second snap ring, shrink groove link up with accomodate the groove, extending structure sets up shrink groove and accomodate the inslot, and be in one side of accomodating the groove is provided with the rotation chamber, rotate the chamber with accomodate the groove intercommunication.
The invention is still further defined as: the telescopic structure comprises a push block penetrating out of one end of the shrinkage groove and in sliding fit with the shrinkage groove, a toothed plate fixed at the other end of the push block and movably arranged in the storage groove, and a pulley rotatably arranged at one end of the push block penetrating out of the shrinkage groove;
wherein, the push block is connected with the one end that is connected with the pinion rack and is provided with the arch, is provided with in the department of link up of accomodating groove and shrink groove with protruding complex backstop portion.
The invention is still further defined as: the swing structure comprises a gear rotatably arranged in the rotating cavity and meshed with the toothed plate, a rotating shaft for rotatably arranging the gear in the rotating cavity, and a turnover structure connected with the rotating shaft;
and one side of the push block, which is close to the gear, is provided with a yielding groove, the first clamping ring or the second clamping ring is provided with a perforation communicated with the rotating cavity, and the rotating shaft penetrates through the perforation.
The invention is still further defined as: the turnover structure comprises a swing arm fixed at one end of the rotating shaft penetrating out of the perforation and a roller connected with the swing arm through an elastic structure.
The invention is still further defined as: the roller is attached to the arc starting point of the bulge when the roller swings to be in contact with the clamping block;
when the roller is attached to the starting point of the raised circular arc, the central line of the elastic structure is perpendicular to the radius of the circular arc at the starting point of the excessive raised circular arc.
The invention is still further defined as: the elastic structure comprises a sliding hole arranged on the swing arm, a pull rod with one end in sliding connection with the inner wall of the sliding hole, and a pressure spring sleeved on the outer wall of the connecting rod and abutted to the sliding hole;
the center line of the sliding hole coincides with the center line of the swing arm, a flange is arranged at one end of the sliding hole, which faces the roller, and one end of the pressure spring is abutted against the inner wall of the flange;
one end of the pull rod extending into the sliding hole is provided with a step, the other end of the pressure spring is abutted against the step, and the roller is rotatably arranged at one end of the pull rod extending out of the sliding hole.
The invention is still further defined as: one end of the first clamping ring and one end of the second clamping ring are fixed with guide posts, and the other ends of the first clamping ring and the second clamping ring are provided with matching holes matched with the guide posts.
Compared with the prior art, the invention has the beneficial effects that: the mechanism is characterized in that a group of clamping assemblies are arranged at two ends of the first clamping ring and two ends of the second clamping ring respectively, so that the first clamping ring and the second clamping ring are locked into a whole when clamped, the two clamping rings can be firmly clamped together under the condition that bolts do not need to be removed, the ends of two connected pipelines are sealed and included together, the function of quick connection is achieved, and the disassembly and the assembly are convenient and quick, so that the labor is greatly saved.
Drawings
Fig. 1 is a schematic structural view of a pipe connection disassembly-free diagonal clamping mechanism.
FIG. 2 is a schematic view of another orientation of the pipe connection disassembly-free diagonal clamp mechanism.
Fig. 3 is a schematic view of a partially disassembled structure of the pipe connection disassembly-free diagonal clamping mechanism.
Fig. 4 is a schematic structural view of another view of fig. 3.
Fig. 5 is a schematic view of the pipe connection disassembly-free diagonal clamping mechanism with the shrink slot and the receiving slot partially cut away.
In the figure: 1-a first clamping ring; 2-a second snap ring; 3-guide posts; 4-a mating hole; 5-a shrink tank; 6-pushing blocks; 7-pulleys; 8-tooth plate; 9-gear; 10-rotating shaft; 11-swing arms; 12-a pull rod; 13-a compression spring; 14-a receiving groove; 15-a rotation chamber; 16-perforating; 17-slide holes; 18-a roller; 19-a yielding groove; 20-clamping blocks.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, an element in the present disclosure may be referred to as being "fixed" or "disposed" on another element or being directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 to 5, as an embodiment of the invention, the pipe connection disassembly-free diagonal clamping mechanism includes a first clamping ring 1 and a second clamping ring 2 which are semicircular and have the same size, diagonal ports are formed at the ends of the first clamping ring 1 and the second clamping ring 2, and the diagonal ports at the two ends of the first clamping ring 1 and the second clamping ring 2 face opposite;
a clamping assembly is arranged between the end part of the first clamping ring 1 and the end part of the second clamping ring 2, and comprises a swinging structure arranged on the first clamping ring 1 or the second clamping ring 2 and a clamping block 20 arranged on the second clamping ring 2 or the first clamping ring 1;
the swing structure is connected with a telescopic structure movably arranged on the first clamping ring 1 or the second clamping ring 2; when the first clamping ring 1 and the second clamping ring 2 are clamped, the second clamping ring 2 or the inclined opening at the end part of the first clamping ring 1 extrudes the telescopic structure to enable the swinging structure to be overturned onto the clamping block 20, and the first clamping ring 1 and the second clamping ring 2 are locked to be in a complete arc shape.
In this embodiment, this mechanism makes two lockings become an organic wholely when first snap ring 1 and second snap ring 2 block through setting up a set of block subassembly respectively at the both ends of first snap ring 1 and second snap ring 2, can be in the same place two snap rings firm embracing of clamp ring under the condition that need not demolish the bolt to seal the end of two pipelines of connection and include together, play the function of quick-operation, and dismouting is convenient quick, has saved the manpower greatly.
As another embodiment of the present invention, one end of the first snap ring 1 and one end of the second snap ring 2 are provided with a shrinkage groove 5 parallel to the axis of the first snap ring 1 or the second snap ring 2, the shrinkage groove 5 is communicated with a receiving groove 14, the shrinkage structure is arranged in the shrinkage groove 5 and the receiving groove 14, a rotating cavity 15 is arranged at one side of the receiving groove 14, and the rotating cavity 15 is communicated with the receiving groove 14.
In this embodiment, when one end of the first snap ring 1 or the second snap ring 2 presses the telescopic structure, the telescopic structure is retracted into the shrinkage groove 5 and the storage groove 14, so as to drive the swing structure to swing, and then the first snap ring 1 and the second snap ring 2 are locked by being matched with the clamping block 20.
As a further embodiment of the present invention, the telescopic structure comprises a push block 6 penetrating out of one end of the shrinkage groove 5 and in sliding fit with the shrinkage groove 5, a toothed plate 8 fixed at the other end of the push block 6 and movably arranged in the storage groove 14, and a pulley 7 rotatably arranged at one end of the push block 6 penetrating out of the shrinkage groove 5;
wherein, the push block 6 is provided with a bulge at one end connected with the toothed plate 8, and a stop part matched with the bulge is arranged at the through part of the containing groove 14 and the shrinkage groove 5.
In this embodiment, the end of the push block 6 with the projection can be prevented from completely slipping out of the receiving groove 14 into the retraction groove 5 by the stop portion provided; when the inclined opening of the first clamping ring 1 or the second clamping ring 2 extrudes the pulley 7, the pulley 7 and the pushing block 6 are driven to retract into the shrinkage groove 5, and the pushing block 6 drives the toothed plate 8 to move in the storage groove 14 parallel to the axis of the first clamping ring 1 or the second clamping ring 2.
As still another embodiment of the present invention, the swing structure includes a gear 9 rotatably installed in the rotation chamber 15 and engaged with the toothed plate 8, a rotation shaft 10 for rotatably installing the gear 9 in the rotation chamber 15, and a turnover structure connected to the rotation shaft 10;
the push block 6 is provided with a yielding groove 19 at one side close to the gear 9, the first clamping ring 1 or the second clamping ring 2 is provided with a perforation 16 communicated with the rotating cavity 15, and the rotating shaft 10 passes through the perforation 16.
In this embodiment, the purpose of the relief groove 19 is to avoid interference of the push block 6 with the gear wheel 9 during the movement of the toothed plate 8; in the process that the push block 6 and the pulley 7 retract into the shrinkage groove 5, the push block 6 drives the toothed plate 8 to move, so that the gear 9 and the rotating shaft 10 are driven to rotate, and the rotating shaft 10 drives the turnover structure to swing until the toothed plate 8 moves to the end of the stroke.
As still another embodiment of the present invention, the turnover structure includes a swing arm 11 fixed to one end of the rotation shaft 10 penetrating the through hole 16 and a roller 18 connected to the swing arm 11 through an elastic structure.
In this embodiment, the roller 18 is driven to follow the swing through the elastic structure in the process of rotating the rotating shaft 10, when the roller 18 swings to contact with the clamping block 20, the roller 18 drives the elastic structure to stretch and be clamped on the clamping block 20, so that the elastic structure and the clamping block 20 are clamped into a whole, and finally the first clamping ring 1 and the second clamping ring 2 are locked together.
As another embodiment of the present invention, a rounded bump is provided on one side of the clamping block 20 adjacent to the elastic structure, a circular arc-shaped recess is provided on the other side of the clamping block 20, and when the roller 18 swings to contact with the clamping block 20, the roller 18 is attached to a circular arc starting point of the bump;
when the roller 18 is attached to the starting point of the arc of the bump, the center line of the elastic structure is perpendicular to the radius of the arc at the starting point of the bump.
In this embodiment, since the center line of the elastic structure is perpendicular to the radius of the arc at the starting point of the ridge when the roller 18 is attached to the starting point of the arc of the ridge, the roller 18 rolls along the arc of the ridge until entering into the arc-shaped recess when continuing to swing.
As another embodiment of the present invention, the elastic structure includes a sliding hole 17 formed on the swing arm 11, a pull rod 12 with one end slidably connected to an inner wall of the sliding hole 17, and a compression spring 13 sleeved on an outer wall of the connecting rod 12 and abutting against the sliding hole;
the center line of the sliding hole 17 coincides with the center line of the swing arm 11, a flange is arranged at one end of the sliding hole 17 facing the roller 18, and one end of the pressure spring 13 is abutted against the inner wall of the flange;
a step is arranged at one end of the pull rod 12 extending into the slide hole 17, the other end of the pressure spring 13 is abutted against the step, and a roller 18 is rotatably arranged at one end of the pull rod 12 extending out of the slide hole 17.
In this embodiment, when the roller 18 is attached to the starting point of the raised arc, continuing to rotate the swing arm 11 drives the roller 18 to roll along the raised arc, and at this time, the roller 18 pulls the pull rod 12 to slide outwards from the sliding hole 17 slowly, and further compresses the pressure spring 13;
after the roller 18 passes through the middle point of the raised arc, the roller 18 is automatically pulled into the arc-shaped concave position by the elasticity of the pressure spring 13, at the moment, the first clamping ring 1 and the second clamping ring 2 are completely included, and the first clamping ring 1 and the second clamping ring 2 are clamped into a whole by the elasticity of the pressure spring 13.
As a further embodiment of the present invention, a guide post 3 is fixed on one end of the first snap ring 1 and the second snap ring 2, and a mating hole 4 adapted to the guide post 3 is formed on the other end of the first snap ring 1 and the second snap ring 2.
The guide post 3 and the matching hole 4 can guide the first clamping ring 1 and the second clamping ring 2 when being clamped, so that the first clamping ring and the second clamping ring are concentric when being completely included, and the effect of forming a complete circular ring is achieved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (2)
1. The pipeline connection disassembly-free inclined clamping mechanism is characterized by comprising a first clamping ring (1) and a second clamping ring (2) which are semicircular and have the same size, inclined openings are formed in the end parts of the first clamping ring (1) and the second clamping ring (2), and the inclined openings at the two ends of the first clamping ring (1) and the second clamping ring (2) face opposite directions;
a clamping assembly is arranged between the end part of the first clamping ring (1) and the end part of the second clamping ring (2), and comprises a swinging structure arranged on the first clamping ring (1) or the second clamping ring (2) and a clamping block (20) arranged on the second clamping ring (2) or the first clamping ring (1);
the swing structure is connected with a telescopic structure movably arranged on the first clamping ring (1) or the second clamping ring (2); when the first clamping ring (1) and the second clamping ring (2) are clamped, the second clamping ring (2) or a bevel extrusion telescopic structure at the end part of the first clamping ring (1) enables the swinging structure to be overturned onto the clamping block (20) and locks the first clamping ring (1) and the second clamping ring (2) to be in a complete arc shape;
one end of the first clamping ring (1) and one end of the second clamping ring (2) are provided with a shrinkage groove (5) parallel to the axis of the first clamping ring (1) or the axis of the second clamping ring (2), the shrinkage groove (5) is communicated with a containing groove (14), the telescopic structure is arranged in the shrinkage groove (5) and the containing groove (14), one side of the containing groove (14) is provided with a rotating cavity (15), and the rotating cavity (15) is communicated with the containing groove (14);
the telescopic structure comprises a push block (6) penetrating out of one end of the shrinkage groove (5) and in sliding fit with the shrinkage groove (5), a toothed plate (8) fixed at the other end of the push block (6) and movably arranged in the storage groove (14), and a pulley (7) rotatably arranged at one end of the push block (6) penetrating out of the shrinkage groove (5);
wherein, a bulge is arranged at one end of the pushing block (6) connected with the toothed plate (8), and a stop part matched with the bulge is arranged at the through part of the containing groove (14) and the shrinkage groove (5);
the swing structure comprises a gear (9) rotatably arranged in the rotating cavity (15) and meshed with the toothed plate (8), a rotating shaft (10) rotatably arranged in the rotating cavity (15) and a turnover structure connected with the rotating shaft (10);
a yielding groove (19) is formed in one side, close to the gear (9), of the push block (6), a through hole (16) communicated with the rotating cavity (15) is formed in the first clamping ring (1) or the second clamping ring (2), and the rotating shaft (10) penetrates through the through hole (16);
the turnover structure comprises a swing arm (11) fixed on one end of the rotating shaft (10) penetrating out of the perforation (16) and a roller (18) connected with the swing arm (11) through an elastic structure;
a smooth bulge is arranged on one side of the clamping block (20) close to the elastic structure, an arc-shaped recess is arranged on the other side of the clamping block (20), and when the roller (18) swings to be in contact with the clamping block (20), the roller (18) is attached to an arc starting point of the bulge;
when the roller (18) is attached to the starting point of the circular arc of the bulge, the central line of the elastic structure is perpendicular to the radius of the circular arc at the starting point of the bulge.
2. The pipe connection disassembly-free diagonal clamping mechanism according to claim 1, wherein the elastic structure comprises a sliding hole (17) formed in the swing arm (11), a pull rod (12) with one end slidably connected with the inner wall of the sliding hole (17), and a pressure spring (13) sleeved on the outer wall of the pull rod (12) and abutted with the sliding hole (17);
the center line of the sliding hole (17) is overlapped with the center line of the swing arm (11), a flange is arranged at one end of the sliding hole (17) facing the roller (18), and one end of the pressure spring (13) is abutted against the inner wall of the flange;
one end of the pull rod (12) extending into the sliding hole (17) is provided with a step, the other end of the pressure spring (13) is abutted against the step, and the roller (18) is rotatably arranged at one end of the pull rod (12) extending out of the sliding hole (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210333949.8A CN114645983B (en) | 2022-03-31 | 2022-03-31 | Disassembly-free inclined clamping mechanism for pipeline connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210333949.8A CN114645983B (en) | 2022-03-31 | 2022-03-31 | Disassembly-free inclined clamping mechanism for pipeline connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114645983A CN114645983A (en) | 2022-06-21 |
| CN114645983B true CN114645983B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210333949.8A Active CN114645983B (en) | 2022-03-31 | 2022-03-31 | Disassembly-free inclined clamping mechanism for pipeline connection |
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| Country | Link |
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| CN (1) | CN114645983B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH116591A (en) * | 1997-06-17 | 1999-01-12 | Maruyasu Kogyo Kk | Pipe connector device |
| JP3198549U (en) * | 2015-04-24 | 2015-07-09 | ▲黄▼ 平仲 | Improved structure of wrench with swing ratchet |
| CN109519635A (en) * | 2017-09-20 | 2019-03-26 | 湖北屯仓管业科技发展有限公司 | Large-sized plastic rubber pipeline butt-joint mounting device |
| CN110548262A (en) * | 2019-08-21 | 2019-12-10 | 宁海兴达旅游用品有限公司 | Automatic telescopic rod stick |
| CN212857001U (en) * | 2020-05-24 | 2021-04-02 | 伊犁华泽水利建设工程有限公司 | Water trap for hydraulic engineering |
| CN212908341U (en) * | 2020-06-19 | 2021-04-06 | 深圳市南士科技股份有限公司 | Direct-insertion environment-resistant circular electric connector |
| CN214248655U (en) * | 2020-11-20 | 2021-09-21 | 天津市久盛通达科技有限公司 | Socket type steel-plastic composite pipeline for drainage and pipe fitting |
-
2022
- 2022-03-31 CN CN202210333949.8A patent/CN114645983B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH116591A (en) * | 1997-06-17 | 1999-01-12 | Maruyasu Kogyo Kk | Pipe connector device |
| JP3198549U (en) * | 2015-04-24 | 2015-07-09 | ▲黄▼ 平仲 | Improved structure of wrench with swing ratchet |
| CN109519635A (en) * | 2017-09-20 | 2019-03-26 | 湖北屯仓管业科技发展有限公司 | Large-sized plastic rubber pipeline butt-joint mounting device |
| CN110548262A (en) * | 2019-08-21 | 2019-12-10 | 宁海兴达旅游用品有限公司 | Automatic telescopic rod stick |
| CN212857001U (en) * | 2020-05-24 | 2021-04-02 | 伊犁华泽水利建设工程有限公司 | Water trap for hydraulic engineering |
| CN212908341U (en) * | 2020-06-19 | 2021-04-06 | 深圳市南士科技股份有限公司 | Direct-insertion environment-resistant circular electric connector |
| CN214248655U (en) * | 2020-11-20 | 2021-09-21 | 天津市久盛通达科技有限公司 | Socket type steel-plastic composite pipeline for drainage and pipe fitting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114645983A (en) | 2022-06-21 |
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