CN101936089B - Telescopic safety fence - Google Patents
Telescopic safety fence Download PDFInfo
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- CN101936089B CN101936089B CN 200910065366 CN200910065366A CN101936089B CN 101936089 B CN101936089 B CN 101936089B CN 200910065366 CN200910065366 CN 200910065366 CN 200910065366 A CN200910065366 A CN 200910065366A CN 101936089 B CN101936089 B CN 101936089B
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- telescopic
- magnetic
- isolation strip
- reed
- rotating shaft
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Abstract
A telescopic safety fence is composed of a telescopic isolation belt and a base, wherein the telescopic isolation belt is composed of an isolation belt, a rotation shaft, a spring plate and an outer protective casing; the telescopic isolation belt is connected with the base; the base is a magnetic base and provided with a pick-up surface; the telescopic safety fence is fixed on an object through the pick-up action between the base and the surface of the object, and the magnetic base is provided with a switch which can be turned on or off to control the magnetism of the base. The invention combines the telescopic isolation belt with the magnetic base; the fence can not only be arranged on the ground, but also be adsorbed on the outer surface of a magnetizer by means of the magnetism of the magnetic base; the height and position of the fence can be freely adjusted, thus the fence can be arranged in a striking place; and as the magnetic base is adsorbed on the outer surface of the equipment through the magnetism, the size and weight of the fence can be greatly decreased, the fence is not easy to knock down, and when the place with the equipment has not enough space or the ground is rough, the telescopic safety fence can be used normally.
Description
Technical field:
The present invention relates to a kind of indication isolation strip device of the zone isolation for various public places and accident place, indication isolation strip device, particularly a kind of Telescopic safety fence when relating in particular to electric power apparatus examination.
Background technology:
Clear in State Grid Corporation of China's " electrical safe working order ", the substation equipment interruption maintenance must arrange safe fence, caution board around contiguous charging equipment, be strayed into (mistake is stepped on) charged interval to prevent the maintainer.At present, the device for floor space in areas mainly is comprised of isolation chain, insulated column two parts. and the material cost of these devices is high, and whole device volume is large, and weight is large, uses and carry all inconveniences.Also have to adopt to stand on ground and get telescopic isolation strip, that this structure is taken up an area the space is large, and the base of this type of isolation strip easily falls, in case to just can not effectively indicating to people.(applying date is on August 9th, 2006 to Chinese utility model patent " Telescopic safe fence ", application number is 200620106534.3, notice of authorization day is on October 17th, 2007, notice of authorization number is CN 200961379Y) a kind of safe fence for power equipment disclosed, although this safe fence is provided with the ratchet mechanism of one-way movement, but need the manual rotation handle during its folding and unfolding isolation strip, inconvenient operation, and also it adopts the base support total.(applying date is on April 17th, 1997 to Chinese utility model patent " isolation strip device ", application number is 97203562.1, notice of authorization day is on February 24th, 1999, notice of authorization number is CN 2308682Y) disclosed a kind of telescopic isolation strip, although its isolation strip can be by the spring automatic drawing back, but its column periphery only is provided with a fixing dop to be connected with the movable chuck of another isolation strip, when these two isolation strip effect that no longer connects during straight line bad, and this isolation strip is by base support, easily knocked over, and in the space the less place base that might be unable to hold.Particularly for the isolation of power equipment caution, if being put on the ground sometimes, the isolation strip may because its position be crossed lowly and eye-catching not, sometimes may not place above-mentioned isolation strip owing to narrow space has ground space; Moreover, only have a fixed chuck on the existing telescopic isolation strip, linking to each other with movable chuck to fetch by it surrounds to the space, when the movable chuck of fixed chuck and another isolation strip during not at straight line, be not easy to make up the isolation strip, nor can the criss-cross square area of isolation of member.
Summary of the invention:
The object of the present invention is to provide a kind of Telescopic safety fence, it is eye-catching not and easily knocked over the technical problem that does not have indicative function in ground by base support that described this Telescopic safety fence will solve in the prior art Telescopic safety fence action need.
The objective of the invention is to be achieved through the following technical solutions: this Telescopic safety fence; consisted of by telescopic isolation strip and pedestal; this telescopic isolation strip is by the isolation strip; rotating shaft; reed and outer protection cover consist of; isolation strip one end is fixed in the rotating shaft and around this rotating shaft and twines; the isolation strip other end passes from the outer protection cover; telescopic isolation strip is connected with pedestal; it is characterized in that: this pedestal is the magnetic pedestal of tool; pedestal is provided with an adhesive face; this Telescopic safety fence is fixed on the object by the magnetic attraction effect of pedestal and body surface; this magnetic base is by two magnetic conductive shells; two magnetic conduction abaculus and cylindrical permanent magnet do not consist of; two magnetic conductive shells and the magnetic conduction abaculus cuboid piece shape structure of establishing cylindrical hole in consisting of not; two not the magnetic conduction abaculus be positioned on the diameter line of cylindrical hole; cylindrical permanent magnet is inserted in the hole of cuboid piece to be rotatably connected; two magnetic poles of cylindrical permanent magnet lay respectively at the top and bottom of this cylinder; front end face in cylindrical permanent magnet is fixed with a handles, and the magnetic of pedestal can be opened and turn off to swing handle
(it is attenuated to produces enough adhesive active forces).Herein, because the top and bottom of cylindrical permanent magnet are magnetic pole, therefore when making its pole pair answer the shell of magnetic conduction by the handle rotating permanent magnet, the magnetic line of force can be by magnetic conductive shell and the adhesive of exterior object phase, and magnetic base shows magnetic; When the magnetic pole of permanent magnet was aligned with two non-magnetic abaculus, its magnetic line of force was closed, and can not outwards transmit, and whole pedestal is exhibit magnetic properties not externally, by this, realized the opening and closing of magnetic base magnetic.
Certainly, from the angle of practical function, this cylindrical magnet is electromagnet also, and a power-on switch is set as the pedestal magnetic switch at the power circuit of electromagnet.
Magnetic conductive shell is made of iron, and the magnetic conduction abaculus is not made of aluminium.
Magnetic conductive shell so long as material that can magnetic conduction consist of can, the alloy that also can or contain a certain amount of iron such as steel, nickel is also passable, non-magnetic abaculus also can be that other non-magnetic materials consist of, such as engineering plastics and copper.
The reed of telescopic isolation strip is the winding escalator spring; the rotating shaft lower end is provided with a notch; the inner termination of reed is connected in the notch of rotating shaft lower end; the reed periphery also is provided with a reed casket, has groove on this reed casket, in the external end head clamping of reed and the groove of reed casket; the rotating shaft upper end is provided with a circular cover; insert in the shrinkage pool at this circle cover center the upper end of rotating shaft, and the hole at reed casket center is passed in the lower end of rotating shaft, is supported on the rotating shaft support spare at outer protection cover center, lower end.
Described support member is a bolt, and the bolt head center of bolt rear end is provided with an axial shrinkage pool, and the rotating shaft lower end is supported in the shrinkage pool at this bolt head center.
The outer protection cover is that stainless steel is protected cylinder; this stainless steel cylinder lower end is connected by the stainless steel brace of bolt with an end semicircular in shape; the stainless steel brace other end is connected with the shell of pedestal by locking knob; this locking knob front end is provided with thread segment, and is in mating connection with a screwed hole in the shell.
Telescopic isolation strip is provided with fixing subcard head and the master card head that is connected with the isolation strip movable end, and the circular cover outside of upper end is fixed in subcard head upper end, and the outside of reed casket is fixed in the lower end.
Be provided with three sub-dops in telescopic isolation strip, these three sub-dops and master card head distribute along the central angles such as circumferencial direction of circular cover.
The subcard head is that cross section is I-shaped long element, is provided with the elongated slot that matches with the subcard head in the master card head, and the lower end of a master card elongated slot is provided with the splayed entrance.
Operating principle of the present invention is: the present invention combines controllable magnetic pedestal and reed traction contracting formula isolation strip, and the controllable magnetic pedestal is as the carrier of the telescopic isolation strip of reed, can be adsorbed on shell and is on the equipment surface of the magnetic conductions such as iron and steel.The telescopic isolation strip of reed can be accomplished 3～5 meters long, the telescopic isolation strip of reed cascaded up one by one just can form very long isolation strip, also can make up criss-cross square area of isolation by a plurality of subcard heads, the equipment of needs isolation is isolated, play warning function, support equipment safety.
The present invention compares with prior art, and its effect is actively with obvious.The present invention is with the telescopic isolation strip formation Telescopic safety fence that combines with magnetic base, this fence needn't be arranged on the ground, can pass through the magnetic absorption of magnetic base in the device outer surface of magnetic conduction, the high and low position of fence can arbitrarily be regulated, and fence can be arranged at higher, eye-catching position; Simultaneously, because magnetic base is adsorbed by magnetic force and device outer surface, size and the weight of fence reduce greatly, are not easy to be knocked over.Simultaneously, the present invention can not put on the ground, does not have sufficient space or ground not at ordinary times at the scene of equipment, does not affect the normal use of this Telescopic safety fence.A switching device that can open and close (or weakening) its magnetic is set on the magnetic base, can conveniently this Telescopic fence be installed on the equipment or from equipment and takes off.Certainly, if adopt the permanent magnetism cylinder in the magnetic base, it can be at magnetic conductive shell and does not rotate in the circular port of the pedestal that consists of of magnetic conduction abaculus, by at permanent magnetism cylinder end face one handles being set, the rotary permanent-magnet cylinder makes pedestal externally show magnetic or non-exhibit magnetic properties easily.Magnetic conductive shell adopts iron to consist of, and the magnetic conduction abaculus is not made of aluminium, is convenient to process the endoporus that needs.The rotating shaft of telescopic isolation strip is inserted respectively on a circular cover and the support member at two ends up and down, and this can reduce the rotating shaft rotary resistance, and returning spring adopts disc spring, can take full advantage of the cylindrical space that holds the isolation strip, makes its more compact structure.Support member adopts bolt, is convenient to telescopic isolation strip is connected with the magnetic base of bottom, and can takes the two apart placement easily when not using, the bolt head of this bolt rear end is provided with a shrinkage pool, in order to the supporting revolving shaft lower end, this part is dual-purpose, makes compact conformation.Evenly distributing on telescopic isolation strip arranges three fixing subcard heads and a movable chuck that is connected with the termination, isolation strip, all can have suitable stator dop and another master card head to be connected when adjacent two isolation strip are in any angle position.The subcard head is I-shaped, is convenient to the master card head and inserts from top to down cooperation, and it is also convenient to pull down.
Description of drawings:
Fig. 1 is the sectional structure schematic diagram of Telescopic safety fence the first embodiment of the present invention.
Fig. 2 is the lateral view of Telescopic safety fence the first embodiment of the present invention.
Fig. 3 is the schematic diagram after the combination of magnetic conduction abaculus of the irony magnetic conductive shell of Telescopic safety fence the first embodiment of the present invention and aluminium matter.
Fig. 4 is the top view of reed casket of the rotating shaft lower end of Telescopic safety fence the first embodiment of the present invention.
Fig. 5 is A-A sectional view among Fig. 4.
The specific embodiment:
Embodiment 1:
Such as Fig. 1; Fig. 2; Fig. 3; Fig. 4 and shown in Figure 5; this Telescopic safety fence of the present invention; in the present embodiment; consisted of by telescopic isolation strip and pedestal 1; this telescopic isolation strip is by isolation strip 2; rotating shaft 3; reed 4 and outer protection cover 5 consist of; telescopic isolation strip and pedestal 2 link together by a stainless steel brace 6 that is rectangular in shape; wherein; this pedestal 1 is the magnetic pedestal of tool; this magnetic base 1 is by two irony magnetic conductive shells 11; two aluminium matter not magnetic conduction abaculus 12 and a cylindrical permanent magnet 13 consists of; two irony magnetic conductive shells 11 and aluminium matter is the magnetic conduction abaculus 12 cuboid piece shape structure of establishing cylindrical hole 14 in consisting of not; the side of this cuboid piece can be used as the adhesive face with equipment connection; two aluminium matter not magnetic conduction abaculus 12 is positioned on the diameter line of cylindrical hole 14; cylindrical permanent magnet 13 is inserted in the hole 14 of cuboid piece to be rotatably connected; two magnetic pole N of cylindrical permanent magnet and the S utmost point lay respectively at the top and bottom of this cylinder 13; front end face in cylindrical permanent magnet is fixed with a handles 15; in hole 14 corresponding to cylindrical permanent magnet rear end, be provided with the non-magnetic diaphragm seal of aluminium matter; pedestal 1 consists of a structure that permanent magnetism cylinder 13 is surrounded like this, can also a non-magnetic diaphragm seal be set again at cylindrical permanent magnet 13 front end face mounting knob places in case of necessity.Herein, because the top and bottom of cylindrical permanent magnet 13 are magnetic pole, therefore when making its pole pair answer the shell of magnetic conduction by handle 15 rotating permanent magnets, the magnetic line of force can be by magnetic conductive shell and the adhesive of exterior object phase, and magnetic base shows magnetic; When the magnetic pole of permanent magnet is aligned with two non-magnetic abaculus, its magnetic line of force is closed, can not outwards transmit, whole pedestal is exhibit magnetic properties not externally, by this, consist of the switch that can open and turn off pedestal magnetic, that is to say that the magnetic of magnetic base can be opened and turn off (it is attenuated to can not produces enough adhesive active forces) under the effect of this switch, the adhesive that realizes easily magnetic base and device outer surface with pull down.Correspondence position at pedestal 1 is write " ON/ opens " and " OFF/ pass ", convenient operation librarian use.Irony magnetic conductive shell and can by glue bond together, also can not being bolted between the magnetic conduction abaculus.From protection magnet magnetic line of force angle, adopt glue bond more better.
The reed 4 of telescopic isolation strip is winding escalator spring 4; rotating shaft 3 is copper rotating shafts 3; outer protection cover 5 is stainless steel cylinders 5; copper axle 3 middle and upper parts are fixed with plastic sleeve 31; the inside one end with convenient fixedly isolation strip 2 and reed 4; 2 the insides, isolation strip, one end is fixed on the axle sleeve 31 in the rotating shaft and around this axle sleeve and twines; isolation strip 2 other ends pass from outer protection cover 5; axle sleeve 31 lower ends are provided with a notch; the inner termination of reed 4 is connected in the notch of axle sleeve 31 lower ends; reed 4 peripheries also are provided with a reed casket 7; have groove 71 on this reed casket 7; in the external end head clamping of reed 4 and the groove 71 of reed casket, rotating shaft 3 upper ends are provided with a circular cover 8, and insert in the shrinkage pool at these circle cover 8 centers the upper end of axle sleeve 31; the hole at reed casket 7 centers is passed in the lower end of rotating shaft 3; be supported on the bolt at center, stainless steel cylinder 5 lower end, the bolt head center of bolt 32 rear ends is provided with an axial shrinkage pool 33, and rotating shaft 3 lower ends are supported in the shrinkage pool 33 at this bolt head center.
These stainless steel cylinder 5 lower ends are connected by the semicircle end of bolt 32 with a stainless steel brace 6 that is rectangular in shape, stainless steel brace 6 other ends are connected with pedestal 1 by locking knob 9, these locking knob 9 front ends are provided with thread segment, and are in mating connection with a screwed hole in irony magnetic conduction 11 shells.
Telescopic isolation strip is provided with three fixing subcard heads 21 and the master card that is connected with isolation strip 2 movable ends 22, circular cover 8 outsides of upper end are fixed in subcard head 21 upper ends, the outside of reed casket 7 is fixed in the lower end, these three sub-dops 21 and master card 22 central angle such as circumferencial direction along circular cover 8 distribute, subcard head 21 is that cross section is I-shaped long element, be provided with the elongated slot that matches with the subcard head in the master card 22, the lower end of a master card elongated slot is provided with the splayed entrance.
Certainly, from the angle of practical function, this cylindrical magnet also can be replaced by an electromagnet, and a power-on switch is set as the pedestal magnetic switch at the power circuit of electromagnet.
Magnetic conductive shell so long as material that can magnetic conduction consist of can, the alloy that also can or contain a certain amount of iron such as steel, nickel is also passable, non-magnetic abaculus also can be that other non-magnetic materials consist of, such as engineering plastics and copper.
Rotating shaft lower end support member also can other structures, such as one with inward recess thing piece (metal derby or unit of plastic all can), it also can be thrust bearing, the present embodiment adopts a bolt to realize the support and two functions that telescopic isolation strip is connected with pedestal of countershaft, so that more compact structure is assembled more convenient.Certainly, if end support arranges a thrust bearing under the shrinkage pool of bolt head and rotating shaft, effect can be better, just increase like this complexity of structure, and infrastructure cost.
The circular cover of rotating shaft upper end and the reed casket of its lower end adopt plastics to consist of, and are convenient to assemble the subcard head.Certainly, the reed casket of circular cover and its lower end also can by metal material, consist of such as stainless steel.
Between the shrinkage pool of rotating shaft upper end and circular cover a rolling bearing can be set also, can reduce rotary resistance like this, prolong the application life of circular cover.
Making installation step of the present invention is as follows: (1) is wrapped in the isolation strip on the plastic sleeve of rotating shaft, and reed the inner is clamped on notch place, axle center, plastic sleeve bottom, and close plastics reed casket, plastics cover; (2) subcard head lower end, isolation strip is fixed on the plastics reed casket, the upper end is fixed on plastic barrel and covers, in case reed ejects; (3) rotating shaft tightens reed, then isolation strip one end is pulled out, and is stressed when guaranteeing to pull out, and loads onto isolation strip master card head; (4) parts that assemble are filled in the stainless steel cylinder, the aperture of interior six side's screw rear ends is withstood in copper axle lower end, with screw parts is fixed on the stainless steel casing; The stainless steel cylinder of the telescopic isolation strip that (5) will assemble and stainless steel brace are assembled together, at the thread segment of the six side's screws nut that is tightened; (6) the stainless steel brace is fixed on the controllable magnetic pedestal with locking knob.
The course of work of the present invention is as follows: controllable magnetic pedestal and reed traction contracting formula isolation strip is combined, and the controllable magnetic pedestal is as the carrier of the telescopic isolation strip of reed, can be adsorbed on shell and is on the equipment surface of the magnetic conductions such as iron and steel.The telescopic isolation strip of reed can be accomplished 3～5 meters long, and the telescopic isolation strip of reed is cascaded up one by one just can form very long isolation strip, and 1. next isolation strip, left side can be fixed on the subcard head of this cylinder left side; The isolation strip of 2. stretching out to the right in this cylinder can be fixed on the subcard head of next cylinder; 3. the isolation strip that (be people stand this side) comes from this cylinder the place ahead can be fixed on the subcard head of this cylinder the place ahead.If 4. this cylinder is positioned at last protection screen, can also attract from this cylinder back an isolation strip so, walk around the screen end and be fixed on the subcard head of this cylinder back.Also can make up criss-cross square area of isolation by a plurality of subcard heads, use flexibly, the equipment of needs isolation is isolated, play warning function, support equipment safety.
Claims (8)
1. Telescopic safety fence; consisted of by telescopic isolation strip and pedestal; this telescopic isolation strip is by the isolation strip; rotating shaft; reed and outer protection cover consist of; isolation strip one end is fixed in the rotating shaft and around this rotating shaft and twines; the isolation strip other end passes from the outer protection cover; telescopic isolation strip is connected with pedestal; it is characterized in that: this pedestal is the magnetic pedestal of tool; pedestal is provided with an adhesive face; this Telescopic safety fence is fixed on the object by the magnetic attraction effect of pedestal and body surface; this magnetic base is by two magnetic conductive shells; two magnetic conduction abaculus and cylindrical permanent magnet do not consist of; two magnetic conductive shells and the magnetic conduction abaculus cuboid piece shape structure of establishing cylindrical hole in consisting of not; two not the magnetic conduction abaculus be positioned on the diameter line of cylindrical hole; cylindrical permanent magnet is inserted in the hole of cuboid piece to be rotatably connected; two magnetic poles of cylindrical permanent magnet lay respectively at the top and bottom of this cylinder; front end face in cylindrical permanent magnet is fixed with a handles, and the magnetic of pedestal can be opened and turn off to swing handle.
2. Telescopic safety fence as claimed in claim 1, it is characterized in that: magnetic conductive shell is made of iron, and the magnetic conduction abaculus is not made of aluminium.
3. Telescopic safety fence as claimed in claim 1 or 2; it is characterized in that: the reed of telescopic isolation strip is the winding escalator spring; the rotating shaft lower end is provided with a notch; the inner termination of reed is connected in the notch of rotating shaft lower end; the reed periphery also is provided with a reed casket; have groove on this reed casket; in the external end head clamping of reed and the groove of reed casket; the rotating shaft upper end is provided with a circular cover; insert in the shrinkage pool at this circle cover center the upper end of rotating shaft; the hole at reed casket center is passed in the lower end of rotating shaft, is supported on the rotating shaft support spare at outer protection cover center, lower end.
4. Telescopic safety fence as claimed in claim 3 is characterized in that: described support member is a bolt, and the bolt head center of bolt rear end is provided with an axial shrinkage pool, and the rotating shaft lower end is supported in the shrinkage pool at this bolt head center.
5. Telescopic safety fence as claimed in claim 4; it is characterized in that: the outer protection cover is that stainless steel is protected cylinder; this stainless steel cylinder lower end is connected by the stainless steel brace of bolt with an end semicircular in shape; the stainless steel brace other end is connected with the shell of pedestal by locking knob; this locking knob front end is provided with thread segment, and is in mating connection with a screwed hole in the shell.
6. such as claim 1 or 2 each described Telescopic safety fences, it is characterized in that: telescopic isolation strip is provided with fixing subcard head and the master card head that is connected with the isolation strip movable end, the circular cover outside of upper end is fixed in subcard head upper end, and the outside of reed casket is fixed in the lower end.
7. Telescopic safety fence as claimed in claim 6 is characterized in that: be provided with three sub-dops in telescopic isolation strip, these three sub-dops and master card head distribute along the central angles such as circumferencial direction of circular cover.
8. Telescopic safety fence as claimed in claim 7, it is characterized in that: the subcard head is that cross section is I-shaped long element, is provided with the elongated slot that matches with the subcard head in the master card head, and the lower end of a master card elongated slot is provided with the splayed entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910065366 CN101936089B (en) | 2009-07-03 | 2009-07-03 | Telescopic safety fence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910065366 CN101936089B (en) | 2009-07-03 | 2009-07-03 | Telescopic safety fence |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101936089A CN101936089A (en) | 2011-01-05 |
| CN101936089B true CN101936089B (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910065366 Expired - Fee Related CN101936089B (en) | 2009-07-03 | 2009-07-03 | Telescopic safety fence |
Country Status (1)
| Country | Link |
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| CN (1) | CN101936089B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741988A (en) * | 2013-11-22 | 2014-04-23 | 国家电网公司 | Series compensation fence for substation |
| CN106049982A (en) * | 2016-07-22 | 2016-10-26 | 国网河南禹州市供电公司 | Reel type insulating resin safety net |
| CN109236030B (en) * | 2018-09-30 | 2020-10-30 | 国网江苏省电力公司盐城供电分公司 | Electric power construction equipment with magnetic attraction hinge for stabilizing steering safety protective guard |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2547763Y (en) * | 2002-05-14 | 2003-04-30 | 杭州富阳新颖电子有限公司 | Multifunctional warning elt |
| CN2705258Y (en) * | 2004-04-15 | 2005-06-22 | 江文炫 | Permanent magnetic working table |
| CN200961379Y (en) * | 2006-08-09 | 2007-10-17 | 李仁� | Telescopic safe rail |
| CN200964717Y (en) * | 2006-10-17 | 2007-10-24 | 川立开发实业有限公司 | Scroll type fence |
| CN201099839Y (en) * | 2007-10-11 | 2008-08-13 | 上海千驰电力设备有限公司 | Magnetic rail free reel |
| CN201460399U (en) * | 2009-07-03 | 2010-05-12 | 河南省电力公司濮阳供电公司 | Telescopic safety fence |
-
2009
- 2009-07-03 CN CN 200910065366 patent/CN101936089B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2547763Y (en) * | 2002-05-14 | 2003-04-30 | 杭州富阳新颖电子有限公司 | Multifunctional warning elt |
| CN2705258Y (en) * | 2004-04-15 | 2005-06-22 | 江文炫 | Permanent magnetic working table |
| CN200961379Y (en) * | 2006-08-09 | 2007-10-17 | 李仁� | Telescopic safe rail |
| CN200964717Y (en) * | 2006-10-17 | 2007-10-24 | 川立开发实业有限公司 | Scroll type fence |
| CN201099839Y (en) * | 2007-10-11 | 2008-08-13 | 上海千驰电力设备有限公司 | Magnetic rail free reel |
| CN201460399U (en) * | 2009-07-03 | 2010-05-12 | 河南省电力公司濮阳供电公司 | Telescopic safety fence |
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| Publication number | Publication date |
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| CN101936089A (en) | 2011-01-05 |
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