CN201103226Y - Electric safety device for service port - Google Patents
Electric safety device for service port Download PDFInfo
- Publication number
- CN201103226Y CN201103226Y CNU2007200320522U CN200720032052U CN201103226Y CN 201103226 Y CN201103226 Y CN 201103226Y CN U2007200320522 U CNU2007200320522 U CN U2007200320522U CN 200720032052 U CN200720032052 U CN 200720032052U CN 201103226 Y CN201103226 Y CN 201103226Y
- Authority
- CN
- China
- Prior art keywords
- cover plate
- main cover
- access hole
- closed
- cover boards
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- Expired - Lifetime
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Abstract
The utility model discloses an electric safety device for a service port, which comprises a frame; a pair of main cover boards that can be opened and closed is arranged on a group of opposite sides of the frame; when bring closed, the pair of main cover boards are joined together. Two pairs of subsidiary cover boards that can be opened and closed are arranged on the main cover boards. The two pairs of subsidiary cover boards are positioned on the other group of opposite sides of the frame and cover above the main cover boards after being closed; the main cover boards are connected with a transmission mechanism which is connected with a motor. The electric safety device for the service port of the utility model has safe operation for maintainers during open process; when the cover boards are closed, the cover boards provide protection for the maintainers and when being opened, the cover boards can form safety guards. The electric safety device for the service port has reliable property, convenient operation and wide application range and can not only be served as permanent protective device for the service port, but also be used for temporary maintenance, which is ideal safety protective device during maintenance operation.
Description
Technical field
The utility model relates to a kind of access hole electric safe device, is specially adapted to the access hole security protection of industries such as electric power, chemical industry, metallurgy.
Background technology
Access hole security protection problem is an outstanding problem of industrial security protection aspects such as electric power, chemical industry, metallurgy, be Accident Area, the maintenance that is simply equipped of tradition access hole the time is opened inconvenience, and is time-consuming when needing overhead traveling crane and many people to cooperate overhead traveling crane to hang to uncap plate, require great effort, take up space.The tradition access hole detects when mouth is opened does not in use have safety barrier, needs the field fabrication safety barrier, in the guards making process, personnel's falling accident takes place easily, therefore traditional access hole requirement of incompatibility modern enterprise hommization safety management.
Traditional access hole all has the following aspects shortcoming at present:
1. open inconvenience, need to use aids such as overhead traveling crane;
2. the access hole security protection need be adopted temporary measure, as interim making guardrail, influences site environment, is unfavorable for security civilization production; And be not easy to operate.
3. the cover plate profile is simple and crude, and is inharmonious with whole facility floor, do not meet enterprise's requirement up to standard;
4. dangerous during operating cost;
Summary of the invention
The purpose of this utility model is, a kind of industry access hole safety devices such as electric power, chemical industry, metallurgy that are applicable to are provided.The function of this device is simple and direct, flexible, and cover plate can form guardrail during unlatching, and cover plate and ground form the plane when closing, and the time only needs 1 minute, without any need for aid, has characteristics such as reliable, that maintenance is easy.
In order to realize above-mentioned task, access hole electric safe device of the present utility model is taked following technical solution:
A kind of access hole electric safe device, comprise a framework, it is characterized in that, a pair of main cover plate that can opened/closed is installed on one group of opposite side of framework, this lumps together when main cover plate is closed, on main cover plate, have two pairs can opened/closed auxilliary cover plate, described two pairs of auxilliary cover plates are positioned on another group opposite side of framework, closed bonnet is above main cover plate; Main cover plate is connected with transmission mechanism respectively with auxilliary cover plate, and transmission mechanism links to each other with motor.
Some other characteristics of the present utility model are:
Described framework adopts light-duty square steel to make.
Described main cover plate is made up of light-duty square steel and glass-fiber reinforced plastic grille plate.
The kind of drive that described transmission mechanism adopts turbine and worm to cooperate with leading screw.
Described power of electric motor is 0.55KW.
Access hole electric safe device of the present utility model, maintainer's handling safety in the process of opening, cover plate forms protection to the maintainer when cover plate is closed, and cover plate can form guardrail during unlatching.Dependable performance, easy to operate, widely applicable both can be used as permanent access hole protector, can also use as ad hoc inspection and repair, was desirable safety device in the inspection operation process.
Description of drawings
Fig. 1 is access hole electric safe device of the present utility model state diagram when closed;
Fig. 2 is the state diagram of the auxilliary cover plate of access hole electric safe device of the present utility model when opening;
Fig. 3 is the state diagram of the main cover plate of access hole electric safe device of the present utility model when opening;
Fig. 4 is main cover plate, the state diagram when auxilliary cover plate is all opened of access hole electric safe device of the present utility model;
Fig. 5 carries out transverse bending to main cover plate 3 to check the calculating schematic diagram;
Fig. 6 is that the shoulder pad to framework 1 carries out bending and checks and calculate schematic diagram;
Fig. 7 opens main cover plate 3 to carry out the Force Calculation schematic diagram;
Label among the figure is: 1, framework, 2, auxilliary cover plate, 3, main cover plate, 4, transmission mechanism, 5, motor.
The utility model is described in further detail below in conjunction with accompanying drawing.
Label among the figure is: 1, framework, 2, auxilliary cover plate, 3, main cover plate, 4, transmission mechanism, 5, motor.
The utility model is described in further detail below in conjunction with accompanying drawing.
The specific embodiment
Referring to Fig. 1～4, access hole electric safe device of the present utility model is the applicant through investigation widely, and the independent product of developing comprises a framework 1, a pair of main cover plate 3 that can opened/closed is installed on 1 one groups of opposite side of framework, and this lumps together when main cover plate 3 is closed; On main cover plate 3, have two pairs can opened/closed auxilliary cover plate 2, described two pairs of auxilliary cover plates 2 are positioned on another group opposite side of framework 1, closed back and above main cover plate 3; Main cover plate 3 is connected with transmission mechanism 4, and transmission mechanism 4 links to each other with motor 5.
1. framework:
2. main cover plate:
3. auxilliary cover plate:
4. transmission mechanism:
Transmission mechanism 4 adopts the kind of drive of turbine and worm, leading screw cooperation, and links to each other with motor 5.Provide power by motor 5; driving turbine and worm and leading screw realizes main cover plate 3, auxilliary cover plate 2 to open and closure; this mechanism driving mechanism volume is little, in light weight, between turbine and worm and the leading screw self-lock protection is arranged again simultaneously, has guaranteed that main cover plate 3, auxilliary cover plate 2 are opened, the self-locking of the process of closure.This kind transmission design leading screw acts on the Li Keda 2.5T of main cover plate 3, has guaranteed main cover plate 3 unlatchings, enough power is arranged when closing.
5. motor:
Motor adopts the 0.55KW motor, handle adopt wired movable button and be furnished with spacing, the smooth implementation when having guaranteed the cover plate opened/closed, simple to operate, safe and reliable.
6. key position is checked and is calculated
1). main cover plate 3 is carried out transverse bending check (referring to Fig. 5)
For example: the overall dimensions of main cover plate 3 are: 220 * 126 (cm):
Known: holding capacity Q=500Kg, main cover plate 3 length L=220cm, [σ]=1550Kgf/cm
2, section bar: 8 * 8 square tubes, wall thickness 0.4cm; Ask: maximal bending moment Mmax, section factor W and carry out the check of stress:
Mmax＝1/4QL＝0.25×500×220＝27500Kgf.cm
W＝a
2-b
2/6a＝8
2-7.2
2/6×8＝30cm
3
σ＝Mmax/W＝27500/30＝917Kgf/cm
2
Can find out the moment of flexure maximum that main cover plate 3 length are subjected in the centre position by above calculating, but through checking satisfactory σ＜[σ] thus main cover plate 3 bearing loads greater than 500kg more than.
2). the shoulder pad to framework 1 carries out the bending check
The shoulder pad schematic diagram of framework 1 is seen Fig. 6, by analysis mainly power and shearing force by bending of framework shoulder pad; Calculate check below respectively:
Known: stressed Q=250Kg, fixed distance point are 10cm, and stressed member is: thick 1.2cm, wide 15cm; [τ]=950Kgf/cm
2, [σ]=1550Kgf/cm
2Ask:: flexural stress σ, shear stress τ;
Moment M=Q * 10=250 * 10=2500Kgf.cm
Section factor W=a
2B/6=15 * 1.2
2/ 6=3.6cm
3
σ＝M/W＝2500/3.6＝625Kgf/cm
2
Shearing force τ=Q/F=250/1.2 * 15=14Kgf/cm
2
More than check to calculate, flexural stress that the framework shoulder pad is subjected to and shear stress all are far smaller than their allowable value, i.e. σ＜[σ], τ＜[τ], so the supporting capacity of the shoulder pad of framework does not have problem..
3. main cover plate 3 is opened and carry out the Force Calculation (see figure 7)
Can known: Q=200Kgf, AB=130cm, B be to the distance=33.5cm of stress point, and P is the top power=2500Kg of transmission mechanism leading screw, asks: open main cover plate 3 under the running of transmission mechanism.
According to force balance principle, to B point power taking square P * 33.5=Q * 130=200 * 130
Try to achieve P=800Kgf
Now leading screw top power is that the mechanism of 2500kgf is greater than P=800Kgf, so main cover plate 3 can be opened smoothly.
Operating principle of the present utility model is as follows:
When opening, motor 5 drives the turbine and worm and the guide screw movement of transmission mechanism 4, main cover plate 3 is backed down, auxilliary cover plate 2 is thereupon by main cover plate 3 jack-up, unlatching along with main cover plate 3, auxilliary cover plate 2 is slowly opened under the effect of the power of main cover plate 3, auxilliary cover plate 2 is not finished when opening, and auxilliary cover plate 2 has limited the unlatching of main cover plate 3, has played the effect that interlocking is protected mutually between them, thereby guaranteed safety of operators, after auxilliary cover plate 2 was opened fully, main cover plate 3 could be opened fully, and be hinged owing to assisting cover plate 2 and main cover plate 3 this moment, promptly form fence, when needs were closed, main cover plate 3 was slowly closed by the drive of transmission mechanism 4, and auxilliary cover plate 2 is slowly closed thereupon, put in place until main cover plate 3, auxilliary cover plate 2 covers naturally on main cover plate 3.
Access hole electric safe device of the present utility model, main and auxiliary cover plate can form guardrail during unlatching, safe and reliable, simple in structure, swift and convenient to operate, maintenance convenience, and opening and closing only need one man operation, only can finish with one fen clock time, and without any need for aid.
Claims (7)
1. access hole electric safe device, comprise a framework (1), it is characterized in that, a pair of main cover plate (3) that can opened/closed is installed on (1) one group of opposite side of framework, this lumps together when closing main cover plate (3), on main cover plate (3), have two pairs can opened/closed auxilliary cover plate (2), described two pairs of auxilliary cover plates (2) are positioned on another group opposite side of framework (1), closed back and in the top of main cover plate (3); Main cover plate (3) is connected with transmission mechanism (4), and transmission mechanism (4) links to each other with motor (5).
2. access hole electric safe device as claimed in claim 1 is characterized in that, described framework (1) adopts light-duty square steel to make.
3. access hole electric safe device as claimed in claim 1 is characterized in that described main cover plate (3) is made up of light-duty square steel and glass-fiber reinforced plastic grille plate.
4. access hole electric safe device as claimed in claim 1 is characterized in that, the kind of drive that described transmission mechanism adopts turbine and worm to cooperate with leading screw.
5. access hole electric safe device as claimed in claim 1 is characterized in that described power of electric motor is 0.55KW.
6. access hole electric safe device as claimed in claim 1 is characterized in that, described main cover plate (3) adopts solid joint to be connected with framework (1).
7. access hole electric safe device as claimed in claim 1 is characterized in that, described main cover plate (3) forms fence with auxilliary cover plate (2) when opening fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200320522U CN201103226Y (en) | 2007-06-15 | 2007-06-15 | Electric safety device for service port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200320522U CN201103226Y (en) | 2007-06-15 | 2007-06-15 | Electric safety device for service port |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201103226Y true CN201103226Y (en) | 2008-08-20 |
Family
ID=39950250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200320522U Expired - Lifetime CN201103226Y (en) | 2007-06-15 | 2007-06-15 | Electric safety device for service port |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201103226Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545231A (en) * | 2016-11-01 | 2017-03-29 | 新昌县丰泽机械有限公司 | A kind of intelligent fastening system of access hole |
-
2007
- 2007-06-15 CN CNU2007200320522U patent/CN201103226Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545231A (en) * | 2016-11-01 | 2017-03-29 | 新昌县丰泽机械有限公司 | A kind of intelligent fastening system of access hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080820 |
|
| CX01 | Expiry of patent term |