CN111907921A - Protective cover for petroleum machinery workpiece - Google Patents
Protective cover for petroleum machinery workpiece Download PDFInfo
- Publication number
- CN111907921A CN111907921A CN202010999848.5A CN202010999848A CN111907921A CN 111907921 A CN111907921 A CN 111907921A CN 202010999848 A CN202010999848 A CN 202010999848A CN 111907921 A CN111907921 A CN 111907921A
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- China
- Prior art keywords
- outer side
- arc
- shield
- ball screw
- movable clamping
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D59/00—Plugs, sleeves, caps, or like rigid or semi-rigid elements for protecting parts of articles or for bundling articles, e.g. protectors for screw-threads, end caps for tubes or for bundling rod-shaped articles
- B65D59/06—Caps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
- B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2581/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D2581/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
- B65D2581/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
- B65D2581/051—Details of packaging elements for maintaining contents at spaced relation from package walls, or from other contents
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a protective cover for petroleum mechanical workpieces, which comprises a protective shell, a rubber ring, jacks, fixing devices and through holes, wherein the fixing devices are arranged in the protective shell, movable clamping plates are arranged at the bottom ends of the fixing devices, the number of the movable clamping plates is four, mechanical workpieces to be protected are clamped and fixed through the inner sides of the four movable clamping plates through rubber pads, a connecting mechanism is arranged at the bottom of a knob and connected with the four movable clamping plates through four connecting rods, contraction and expansion of the four movable clamping plates are controlled, the movable clamping plates can be conveniently adjusted according to the mechanical workpieces to be protected and clamped and fixed, and the protective cover is simple in disassembly and assembly operation and convenient to use.
Description
Technical Field
The invention relates to the field of protection covers, in particular to a protection cover for a petroleum mechanical workpiece.
Background
In the middle of the parts of petroleum machinery, especially in underground tools, most workpieces are cylindrical on the whole, such as screw drilling tools, drilling jars, super jars, conventional coring tools, arrow-shaped back pressure valves, drilling tool stabilizers and the like, the workpieces are all made of forged blanks through machining, two ends or one end of each formed workpiece are provided with internal threads or external threads, the external threads of the workpieces need to be carefully protected in the process of maintenance and transportation after the workpieces are formed, so that the external threads are prevented from being damaged due to collision of the workpieces, once the threads of the workpieces are damaged, the sealing performance is reduced, and even the workpieces cannot be used, so that the workpieces are scrapped.
The prior art cup joints the protection through the rubber sleeve to the mechanical parts after processing, and the rubber sleeve is resistant to collide with the effect poor, and is general to mechanical parts's protecting effect, and because mechanical parts's big or small diverse, the rubber sleeve that leads to cup jointing easily loosens and takes off, and the rubber sleeve undersize is not convenient for cup joint, is not convenient for carry out the protection installation to the mechanical parts of variation in size.
Disclosure of Invention
Accordingly, to address the above-described deficiencies, the present invention provides a shield for a petroleum machine workpiece.
The invention is realized in such a way that a protective cover for a petroleum mechanical workpiece is constructed, the protective cover comprises a protective shell and a fixing device, the middle part of the outer side of the protective shell is sleeved with a rubber ring, the bottom end of the outer side of the protective shell is provided with an insertion hole, the circle center of the top end of the protective shell is provided with a through hole, the fixing device is arranged in the protective shell and comprises a knob, a connecting mechanism, a fixed plate and a movable clamping plate, the bottom end of the knob is connected with the connecting mechanism, the bottom end of the connecting mechanism is connected with the movable clamping plate, the bottom end of the outer side of the connecting mechanism is welded with the fixed plate.
Preferably, the connecting mechanism comprises a ball screw, a ball nut, a movable ring, a connecting rod, a shaft seat and a supporting block, the ball screw vertically penetrates through the ball nut and is in threaded connection with the ball nut, the movable ring is locked outside the ball nut, the outer side of the movable ring is rotatably connected with the connecting rod through a rotating shaft, the bottom end of the ball screw is welded with the circle center of the shaft seat, the bottom end of the shaft seat is mutually locked with the supporting block through a bolt, the outer side of the supporting block is mutually welded with a fixed plate, the top end of the ball screw penetrates through a through hole and extends out to be connected with a knob, and the bottom end of the connecting.
Preferably, the movable clamping plate comprises an arc-shaped plate, a polished rod, a rubber pad and a connecting rotating shaft, the polished rod is welded on the outer side of the arc-shaped plate, the rubber pad is bonded on the inner side of the arc-shaped plate, the top end of the arc-shaped plate is rotatably connected with the connecting rod through the connecting rotating shaft, and the jack is penetrated through the outer side of the polished rod to extend out.
Preferably, a layer of rubber ring is sleeved on the outer side of the knob, and anti-skid grains are arranged on the outer side of the rubber ring.
Preferably, the knob and the ball screw are concentrically arranged, and the ball screw, the ball nut and the movable ring are concentrically arranged.
Preferably, the number of the movable clamping plates and the number of the connecting rods are four, and the four connecting rods are respectively connected with the four movable clamping plates.
Preferably, the connecting rod is straight rod-shaped, and the connecting rod inclines outwards from top to bottom.
Preferably, the arc-shaped plates are arc-shaped, and the four arc-shaped plates are uniformly arranged by taking the circle center of the protective shell as the circle center.
Preferably, the surface of the polish rod is smooth, and the inner wall of the jack is attached to the polish rod.
Preferably, the outer side of the rubber pad is attached to the inner side of the arc-shaped plate, and anti-skid grains are arranged on the inner side of the rubber pad.
Preferably, the ball screw and the ball nut are both made of No. 45 steel.
Preferably, the rubber pad is made of nitrile rubber.
The invention has the following advantages: the invention provides a protective cover for petroleum machinery workpieces through improvement, compared with the same type of equipment, the protective cover has the following improvement:
the method has the advantages that: according to the protective cover for the petroleum mechanical workpiece, the fixing device is arranged in the protective cover, the movable clamping plates are arranged at the bottom end of the fixing device, the number of the movable clamping plates is four, and mechanical workpieces to be protected are clamped and fixed through the inner sides of the four movable clamping plates through the rubber pads.
The method has the advantages that: according to the protective cover for the petroleum mechanical workpiece, the connecting mechanism is arranged at the bottom of the knob and is connected with the four movable clamping plates through the four connecting rods, so that contraction and expansion of the four movable clamping plates are controlled, the movable clamping plates can be conveniently adjusted according to the mechanical workpiece to be protected and can be clamped and fixed, the disassembly and assembly operation is simple, and the use is convenient.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the fixing device of the present invention;
FIG. 3 is a top sectional view of the fastening device of the present invention;
FIG. 4 is a schematic view of the movable clamp plate of the present invention;
fig. 5 is a top sectional view of the movable clamp structure of the present invention.
Wherein: the device comprises a protective shell-1, a rubber ring-2, a jack-3, a fixing device-4, a through hole-5, a knob-41, a connecting mechanism-42, a fixing plate-43, a movable clamping plate-44, a ball screw-421, a ball nut-422, a movable ring-423, a connecting rod-424, a shaft seat-425, a supporting block-426, an arc-shaped plate-441, a polished rod-442, a rubber pad-443 and a connecting rotating shaft-444.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 5, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1, the invention provides a protective cover for a petroleum machinery workpiece through improvement, which comprises a protective shell 1 and a fixing device 4, wherein a rubber ring 2 is sleeved in the middle of the outer side of the protective shell 1, an insertion hole 3 is formed in the bottom end of the outer side of the protective shell 1, a through hole 5 is formed in the center of a circle of the top end of the protective shell 1, and the fixing device 4 is installed inside the protective shell 1.
Referring to fig. 2, the present invention provides a shield for a petroleum mechanical workpiece by an improvement, wherein a fixing device 4 includes a knob 41, a connecting mechanism 42, a fixing plate 43 and a movable clamp plate 44, the bottom end of the knob 41 is connected with the connecting mechanism 42, the bottom end of the connecting mechanism 42 is connected with the movable clamp plate 44, the bottom end of the outer side of the connecting mechanism 42 is welded with the fixing plate 43, the outer side of the fixing plate 43 is welded with the shield shell 1, a rubber ring is sleeved on the outer side of the knob 41, anti-slip lines are arranged on the outer side of the rubber ring to prevent slipping of the knob 41, the knob 41 and the ball screw 421 are concentrically arranged, the ball screw 421, the ball nut 422 and the movable ring 423 are concentrically arranged, the knob 41 drives the center of the top end of the ball screw 421 to rotate, the ball screw 421 drives the ball nut 422 and the movable ring 423 to vertically move along the center of the ball screw 421, and the four connecting rods 424 are respectively connected with the four movable clamping plates 44, and the movement of the four movable clamping plates 44 is controlled through the four connecting rods 424.
Referring to fig. 3, the present invention provides a shield for a petroleum mechanical workpiece by improving a coupling mechanism 42 including a ball screw 421, a ball nut 422, a movable ring 423, a connecting rod 424, a shaft seat 425, and a supporting block 426, the ball screw 421 vertically penetrates the ball nut 422, the ball screw 421 is connected with the ball nut 422 by screw thread, the outer side of the ball nut 422 is locked with a movable ring 423, the outer side of the movable ring 423 is rotatably connected with a connecting rod 424 by a rotating shaft, the bottom end of the ball screw 421 is welded with the circle center of a shaft seat 425, the bottom end of the shaft seat 425 is locked with a supporting block 426 by a bolt, the outer side of the supporting block 426 is welded with a fixed plate 43, the top end of the ball screw 421 penetrates through a through hole 5 to extend out to be connected with a knob 41, the bottom end of the connecting rod 424 is connected with a, and the link 424 is inclined outward from top to bottom, so that the link 424 pulls the movable clamp plate 44 inward to contract when moving upward.
Referring to fig. 4 and 5, the present invention provides a protective cover for a petroleum machinery workpiece by improvement, the movable clamp plate 44 includes an arc plate 441, a polish rod 442, a rubber pad 443 and a connecting rotating shaft 444, the polish rod 442 is welded on the outer side of the arc plate 441, the rubber pad 443 is adhered on the inner side of the arc plate 441, the top end of the arc plate 441 is rotatably connected with the connecting rod 424 through the connecting rotating shaft 444, the outer side of the polish rod 442 extends through the insertion hole 3, the arc plate 441 is arc-shaped, and the four arc plates 441 are uniformly arranged with the center of the protective case 1 as the center, so that the four arc plates 441 contract and expand with the center of the protective case 1 as the center, the surface of the polish rod 442 is smooth, the inner wall of the insertion hole 3 is adhered to the polish rod 442, the moving track of the polish rod 442 is limited, and the moving track of the arc plate 441 is further limited, the ball screw, the hardness is high, and is not fragile, and rubber pad 443 adopts the butadiene acrylonitrile rubber material, and extrusion resistance intensity is big, and not fragile.
Example two:
according to the protective cover for the petroleum mechanical workpiece, the anti-skid grains are arranged on the outer side of the rubber ring 2, so that the protective cover 1 is prevented from skidding, the outer side of the rubber pad 443 is attached to the inner side of the arc-shaped plate 441, the anti-skid grains are arranged on the inner side of the rubber pad 443, and the fixing effect on the mechanical workpiece is improved.
The invention provides a protective cover for a petroleum mechanical workpiece through improvement, and the working principle is as follows;
firstly, when a mechanical workpiece is protected, holding the rubber ring 2 on the outer side of the protective shell 1 by hand, and sleeving the protective shell 1 on the outer side of the mechanical workpiece to be protected;
secondly, the knob 41 is rotated, the knob 41 drives the center of the circle at the top end of the ball screw 421 to rotate, the knob 41 and the ball screw 421 are concentrically arranged, the ball screw 421, the ball nut 422 and the movable ring 423 are concentrically arranged, so that the knob 41 drives the center of the circle at the top end of the ball screw 421 to rotate, the surface of the polished rod 442 is smooth, the inner wall of the jack 3 is attached to the polished rod 442 to limit the moving track of the polished rod 442, and further limit the rotating track and the moving track of the arc-shaped plate 441, when the ball screw 421 rotates, the ball nut 422 is driven to move upwards through the thread fit between the ball nut 422, the ball nut 422 drives the movable ring 423 to move vertically upwards along the center of the circle of the ball screw 421, the top end of the connecting rod 424 is driven to move upwards through the rotating shaft outside of the movable ring 423, because the movable clamping plates 44 and the connecting rods 424 are respectively provided, the movement of the four movable clamping plates 44 is controlled by the four connecting rods 424, and the connecting rods 424 are straight rod-shaped, so that the connecting rods 424 incline outwards from top to bottom, when the connecting rods 424 move upwards, the movable clamping plates 44 are pulled inwards to be contracted, and the movable rings 423 move upwards to pull the arc-shaped plates 441 of the four movable clamping plates 44 inwards to be contracted by the four connecting rods 424;
thirdly, because arc 441 is the arc form, and four arc 441 use the 1 centre of a circle department of protective housing evenly to set up as the centre of a circle, make four arc 441 contract with 1 centre of a circle department of protective housing as the central point, arc 441 carries out the centre gripping through inboard rubber pad 443 to the mechanical product of required protection fixed, can accomplish the installation to mechanical product, protects mechanical product, and dismouting easy operation, convenient to use.
The invention provides a protective cover for petroleum machinery workpieces through improvement, a fixing device 4 is arranged in a protective shell 1, a movable clamping plate 44 is arranged at the bottom end of the fixing device 4, four movable clamping plates 44 are arranged, mechanical workpieces to be protected are clamped and fixed through rubber pads 443 on the inner sides of the four movable clamping plates 44, a connecting mechanism 42 is arranged at the bottom of a knob 41, the connecting mechanism 42 is connected with the four movable clamping plates 44 through four connecting rods 424, contraction and expansion of the four movable clamping plates 44 are controlled, the movable clamping plates 44 can be conveniently adjusted according to the mechanical workpieces to be protected, the mechanical workpieces are clamped and fixed, disassembly and assembly operations are simple, and use is convenient.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, the specific connection mode of each part adopts the conventional means of bolt and rivet, welding and the like mature in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A protective cover for a petroleum mechanical workpiece comprises a protective shell (1), wherein a rubber ring (2) is sleeved in the middle of the outer side of the protective shell (1), an insertion hole (3) is formed in the bottom end of the outer side of the protective shell (1), and a through hole (5) is formed in the circle center of the top end of the protective shell (1);
the method is characterized in that: still include fixing device (4), protective housing (1) internally mounted has fixing device (4), fixing device (4) include knob (41), coupling mechanism (42), fixed plate (43) and activity splint (44), knob (41) bottom is connected with coupling mechanism (42), coupling mechanism (42) bottom is connected with activity splint (44), coupling mechanism (42) outside bottom weld has fixed plate (43), and fixed plate (43) outside and protective housing (1) mutual weld.
2. A shield for a petroleum mechanical workpiece, according to claim 1, wherein: the connecting mechanism (42) comprises a ball screw (421), a ball nut (422), a movable ring (423), a connecting rod (424), a shaft seat (425) and a supporting block (426), the ball screw (421) vertically penetrates through the ball nut (422), the ball screw (421) is connected with the ball nut (422) by screw thread, a movable ring (423) is locked at the outer side of the ball nut (422), the outer side of the movable ring (423) is rotationally connected with the connecting rod (424) through a rotating shaft, the bottom end of the ball screw (421) is welded with the circle center of the shaft seat (425), the bottom end of the shaft seat (425) is mutually locked with the supporting block (426) through a bolt, the outer side of the supporting block (426) is welded with the fixing plate (43), the top end of the ball screw (421) penetrates through the through hole (5) to extend out to be connected with the knob (41), and the bottom end of the connecting rod (424) is connected with the movable clamping plate (44).
3. A shield for a petroleum mechanical workpiece, according to claim 1, wherein: the movable clamping plate (44) comprises an arc-shaped plate (441), a polished rod (442), a rubber pad (443) and a connecting rotating shaft (444), the polished rod (442) is welded on the outer side of the arc-shaped plate (441), the rubber pad (443) is bonded on the inner side of the arc-shaped plate (441), the top end of the arc-shaped plate (441) is rotatably connected with the connecting rod (424) through the connecting rotating shaft (444), and the outer side of the polished rod (442) penetrates through the insertion hole (3) to extend out.
4. A shield for a petroleum mechanical workpiece, according to claim 1, wherein: a layer of rubber ring is sleeved on the outer side of the knob (41), and anti-skid lines are arranged on the outer side of the rubber ring.
5. A shield for a petroleum mechanical workpiece, according to claim 1, wherein: the knob (41) and the ball screw (421) are arranged concentrically, and the ball screw (421), the ball nut (422) and the movable ring (423) are arranged concentrically.
6. A shield for a petroleum mechanical workpiece, according to claim 1, wherein: the movable clamping plates (44) and the connecting rods (424) are four, and the four connecting rods (424) are respectively connected with the four movable clamping plates (44).
7. A shield for a petroleum mechanical workpiece, according to claim 2, wherein: the connecting rod (424) is straight rod-shaped, and the connecting rod (424) inclines outwards from top to bottom.
8. A shield for a petroleum mechanical workpiece, according to claim 3, wherein: the arc-shaped plates (441) are arc-shaped, and the four arc-shaped plates (441) are uniformly arranged by taking the circle center of the protective shell (1) as the circle center.
9. A shield for a petroleum mechanical workpiece, according to claim 3, wherein: the surface of the polished rod (442) is smooth, and the inner wall of the jack (3) is attached to the polished rod (442).
10. A shield for a petroleum mechanical workpiece, according to claim 3, wherein: the outer side of the rubber pad (443) is attached to the inner side of the arc-shaped plate (441), and anti-slip lines are arranged on the inner side of the rubber pad (443).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010999848.5A CN111907921A (en) | 2020-09-22 | 2020-09-22 | Protective cover for petroleum machinery workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010999848.5A CN111907921A (en) | 2020-09-22 | 2020-09-22 | Protective cover for petroleum machinery workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111907921A true CN111907921A (en) | 2020-11-10 |
Family
ID=73265373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010999848.5A Withdrawn CN111907921A (en) | 2020-09-22 | 2020-09-22 | Protective cover for petroleum machinery workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111907921A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5931288A (en) * | 1982-08-13 | 1984-02-20 | 株式会社日立製作所 | Detector for grasp of screw type grasper |
| CN2802244Y (en) * | 2005-06-13 | 2006-08-02 | 北京管通科技开发有限责任公司 | Leaking stoppage clippers |
| CN202967884U (en) * | 2012-12-05 | 2013-06-05 | 嘉兴顺联橡塑机械有限公司 | Four-claw fixture device |
| CN204110554U (en) * | 2014-09-20 | 2015-01-21 | 台州奥博管业有限公司 | Protective cover |
| CN205716219U (en) * | 2016-05-05 | 2016-11-23 | 浙江富华管业有限公司 | A kind of pipe cap |
| CN108674813A (en) * | 2018-06-25 | 2018-10-19 | 江苏省金峰石油机械制造有限公司 | A kind of quick detachable external thread petroleum machinery workpiece protective cover |
| GB201909766D0 (en) * | 2018-11-06 | 2019-08-21 | Bewi Energy As | Apparatus for handling protectors for elongate objects |
| CN209815500U (en) * | 2019-04-12 | 2019-12-20 | 新乡职业技术学院 | Hydraulic self-locking fixing device of mechanical telescopic mechanism |
| CN209940276U (en) * | 2019-03-05 | 2020-01-14 | 天津市浩航科技有限公司 | Automobile parts processing is with hanging transport turnover device |
-
2020
- 2020-09-22 CN CN202010999848.5A patent/CN111907921A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5931288A (en) * | 1982-08-13 | 1984-02-20 | 株式会社日立製作所 | Detector for grasp of screw type grasper |
| CN2802244Y (en) * | 2005-06-13 | 2006-08-02 | 北京管通科技开发有限责任公司 | Leaking stoppage clippers |
| CN202967884U (en) * | 2012-12-05 | 2013-06-05 | 嘉兴顺联橡塑机械有限公司 | Four-claw fixture device |
| CN204110554U (en) * | 2014-09-20 | 2015-01-21 | 台州奥博管业有限公司 | Protective cover |
| CN205716219U (en) * | 2016-05-05 | 2016-11-23 | 浙江富华管业有限公司 | A kind of pipe cap |
| CN108674813A (en) * | 2018-06-25 | 2018-10-19 | 江苏省金峰石油机械制造有限公司 | A kind of quick detachable external thread petroleum machinery workpiece protective cover |
| GB201909766D0 (en) * | 2018-11-06 | 2019-08-21 | Bewi Energy As | Apparatus for handling protectors for elongate objects |
| CN209940276U (en) * | 2019-03-05 | 2020-01-14 | 天津市浩航科技有限公司 | Automobile parts processing is with hanging transport turnover device |
| CN209815500U (en) * | 2019-04-12 | 2019-12-20 | 新乡职业技术学院 | Hydraulic self-locking fixing device of mechanical telescopic mechanism |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201110 |