CN207696511U - Shaped steel lineation device - Google Patents
Shaped steel lineation device Download PDFInfo
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- CN207696511U CN207696511U CN201721854304.XU CN201721854304U CN207696511U CN 207696511 U CN207696511 U CN 207696511U CN 201721854304 U CN201721854304 U CN 201721854304U CN 207696511 U CN207696511 U CN 207696511U
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Abstract
The utility model belongs to shaped steel scoring tool technical field more particularly to shaped steel lineation device.Shaped steel lineation device includes the first strut, the second strut, third strut, two connecting rods being mutually parallel, the first measuring scale and the second measuring scale；The wing plate of first strut and shaped steel is arranged in parallel；Second strut is vertically arranged with the first strut, and first end is connected with the first end of the first strut；Third strut is arranged in parallel with the second strut；Each connecting rod is arranged in parallel with the first strut, and first end is connected with the second strut, second end is connected with third strut；First measuring scale is fixed on the first strut；Second measuring scale is connected with third strut, and length direction is consistent with the length direction of third strut；Second measuring scale can be moved along the length direction of third strut.For the shaped steel lineation device convenient for positioning, it is accurate and convenient to use to measure, and reduces accumulated error, improves measuring accuracy, production efficiency is improved in save trouble and labor.
Description
Technical field
The utility model belongs to shaped steel scoring tool technical field more particularly to shaped steel lineation device.
Background technology
The central sill and curb girder of railway freight-car are the passes that main load-supporting part, wherein H profile steel and Z-shaped steel are central sill or curb girder
Key building block, by taking H profile steel as an example, the two boards being mutually parallel are commonly referred to as wing plate, and perpendicular plate is known as web with wing plate.
In the process of central sill or curb girder, it usually needs fish belly shape is made in the both ends of shaped steel, and needs to cut wing plate
It cuts.It needs to cut web when making fish belly shape structure, and needs using wing plate as positioning datum.Before cutting, need to draw
Line determines that cutting position, the precision of scribing line determine accuracy and the precision of cutting.
When shaped steel is suppressed or welded in process of production, between wing plate and web, connecting portion can be formed and not advised
Arc chord angle then causes the web thickness at the position uneven and differs at a distance from wing plate edge, be not easy to measure, is not easy to examine
It surveys.Fish belly shape structure is being made, since the presence of arc chord angle makes square that can not position.At present in scribing line, two are mostly used
The mode that the multiple squares of personal use are positioned, crossed repeatedly, poor accuracy, there are accumulated errors, cause cutting accuracy low, shadow
Follow-up welding quality is rung, welding deformation is increased.
When crossing to wing plate, due to the presence of arc chord angle, measuring center line and relative dimensions are not easy, also use two at present
The mode that the multiple squares of personal use position repeatedly, other than there are accumulated error, it is also necessary to overturn shaped steel to position or survey
Amount, but shaped steel weight is big, it is difficult to overturn, the case where crossing inaccurate, frequently result in big cutting position deviation or even cut wound web,
It is time-consuming and laborious, increase difficulty of processing.
Utility model content
In view of this, the utility model embodiment provides shaped steel lineation device, convenient for positioning, when use, is convenient and efficient,
Scribing line accuracy is improved, it is time saving and energy saving, improve production efficiency.
In order to achieve the above objectives, technical solution used by the utility model is：
Shaped steel lineation device, including：
First strut is arranged in parallel with the wing plate of shaped steel；
Second strut is vertically arranged with first strut, and first end is connected with the first end of first strut；
Third strut is arranged in parallel with second strut, and is located at the same of second strut with first strut
Side；
Two connecting rods being mutually parallel；Each connecting rod is arranged in parallel with first strut, and first end
It is connected with second strut, second end is connected with the third strut；Two connecting rods are located at second strut
The homonymy of first strut；
First measuring scale is fixed on first strut, and the length direction one of length direction and first strut
It causes；With
Second measuring scale is connected with the third strut, and length direction is consistent with the length direction of third strut；
Second measuring scale can be moved along the length direction of the third strut.
Further, second strut includes：
Loop bar is vertically arranged with first strut, and first end is fixedly connected with the first end of first strut；With
Mobile bar is telescopically connected with the second end of the loop bar, and is fixedly connected with two connecting rods.
Further, the second end of the loop bar is equipped with limit hole along the length direction of the loop bar；The mobile bar is worn
In the limit hole；
One end that the mobile bar is connected with the loop bar is equipped with multiple location holes；Multiple location holes are moved along described
The length direction of bar is in single-row arrangement；
Second strut further includes the caging bolt for fixing the loop bar and the mobile bar；The caging bolt
Across the location hole.
Further, each connecting rod includes：
Main strut, second end are fixedly connected with the third strut；With
Secondary strut, first end are fixedly connected with second strut, and second end and the first end of the main strut are flexible
Connection.
Further, the first end of the main strut is equipped with pilot hole along the length direction of the main strut；The secondary branch
The second end of bar is arranged in the pilot hole；
The second end of the pair strut is equipped with multiple adjustment holes；Length direction of multiple adjustment holes along the secondary strut
In single-row arrangement；
The connecting rod further includes the fixing bolt for fixing the main strut and the secondary strut；The fixing bolt
Across the adjustment hole.
Further, the third strut is tied with the main strut of the connecting rod close to first strut in one
Structure, and junction is fillet.
Further, the length direction of third strut described in the third strut upper edge is equipped with sliding slot；
The shaped steel lineation device further includes：
Sliding block, first end is connected with second measuring scale, and is arranged in the sliding slot；
Baffle is fixedly connected with the second end of the sliding block, and end rides upon on the third strut；With
Jackscrew for being fixed on the baffle on the third strut.
Further, first measuring scale protrudes from first strut close to institute close to the side of the connecting rod
State the side of connecting rod.
Further, it is separate to protrude from the third strut for side of second measuring scale far from second strut
The side of second strut.
Further, second measuring scale, can be with described the to after the movement of the direction of first strut
One measuring scale abuts against.
By adopting the above-described technical solution, the technological progress that the utility model obtains is：
When the wing plate of shaped steel is vertically arranged, web is horizontally disposed, the first strut is vertically arranged, and the second strut level is set
It sets, the first strut is located at the lower section of the second strut and the first end of the first strut is connected with the first end of the second strut.Close to the
The connecting rod of one strut is vertically arranged, and upper end is connected with the second strut.First strut, the second strut and close to the first strut
Connecting rod forms U-shaped groove.
When using the lineation device, the wing plate of shaped steel is placed in the U-shaped groove.First measuring scale is fixed on the first strut
On, for measure wing plate vertically on size.Third strut is horizontally disposed, is abutted against with the web of shaped steel.Second surveys
Gage is connected with third strut, for measure web in the horizontal direction on size.
It is using advantageous effect caused by above-mentioned technical proposal：Shaped steel lineation device in the program is convenient for positioning,
Influence when can eliminate the wing plate of shaped steel and the solder fillet of web connecting portion, be positioned to lineation device, it is accurate to measure, and
And it is convenient to use, reduce accumulated error, improve measuring accuracy, production efficiency is improved in save trouble and labor.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without having to pay creative labor, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the front view for the shaped steel lineation device that the utility model embodiment provides；
Fig. 2 is the schematic diagram for the shaped steel lineation device that the utility model embodiment provides；
Fig. 3 is the assembling schematic diagram for the second strut that the utility model embodiment provides；
Fig. 4 is the assembling schematic diagram for the connecting rod that the utility model embodiment provides；
Fig. 5 is the assembling schematic diagram for the third strut that the utility model embodiment provides；
Fig. 6 is the use state diagram for the shaped steel lineation device that the utility model embodiment provides.
Reference sign：
The first struts of 10-, the first measuring scales of 11-, the second struts of 20-, 21- loop bars, 211- limit holes, 22- mobile bars,
221- location holes, 23- caging bolts, 30- third struts, the second measuring scales of 31-, 32- sliding slots, 33- sliding blocks, 34- baffles, 40-
Connecting rod, 41- main struts, 411- pilot holes, 42- pair struts, 421- adjustment holes, 43- fixing bolts, 50- wing plates, 60- webs.
Specific implementation mode
In being described below, for illustration and not for limitation, it is proposed that such as tool of particular system structure, technology etc
Body details, to understand thoroughly the utility model embodiment.However, it will be clear to one skilled in the art that there is no these
The utility model can also be realized in the other embodiments of detail.In other situations, omit to well-known system,
The detailed description of apparatus, circuit and method, in case unnecessary details interferes the description of the utility model.
In order to illustrate technical solution described in the utility model, illustrated below by specific embodiment.
The utility model embodiment provides a kind of shaped steel lineation device, in conjunction with shown in Fig. 1 and Fig. 2, shaped steel lineation device
Including the first strut 10, the second strut 20,30, two connecting rods being mutually parallel 40 of third strut, the first measuring scale 11 and
Two measuring scales 31.The wing plate of first strut 10 and shaped steel is arranged in parallel.Second strut 20 is vertically arranged with the first strut 10, and the
One end is connected with the first end of the first strut 10.Third strut 30 is arranged in parallel with the second strut 20, and with the first strut 10
In the homonymy of the second strut 20.Each connecting rod 40 is arranged in parallel with the first strut 10, and first end and 20 phase of the second strut
Even, second end is connected with third strut 30；Two connecting rods 40 and the second strut 20 are located at the homonymy of the first strut 10.First surveys
Gage 11 is fixed on the first strut 10, and length direction is consistent with the length direction of the first strut 10.Second measuring scale 31 with
Third strut 30 is connected, and length direction is consistent with the length direction of third strut 30.Second measuring scale 31 can be along third branch
The length direction of bar 30 moves.
The wing plate 50 and web 60 of shaped steel are mutually perpendicular to, and when the wing plate 50 of shaped steel is vertically arranged, web 60 is horizontally disposed.
First strut 10 is vertically arranged, and is abutted against with wing plate 50.Second strut 20 is horizontally disposed, and the first strut 10 is located at second
The lower section of bar 20, the first end of the first strut 10 are connected with the first end of the second strut 20.Close to the connecting rod of the first strut 10
40 are vertically arranged, and upper end is connected with the second strut 20.First strut 10, the second strut 20 and the connection close to the first strut 10
Bar 40 forms U-shaped groove.Connecting rod 40 far from the first strut 10 plays connection and supporting role.
When using the shaped steel lineation device, the wing plate 50 of shaped steel is placed in the U-shaped groove.First measuring scale 11 is fixed on
On one strut 10, for measure wing plate 50 vertically on size wing plate 50 is cut to crossing on wing plate 50
It cuts.Third strut 30 is horizontally disposed, is abutted against with the web 60 of shaped steel.Second measuring scale 31 is connected with third strut 30, is used for
Measure web 60 in the horizontal direction on size web 60 is cut to crossing on web 60.In addition, second surveys
Gage 31 can move in the horizontal direction, therefore convenient for adjusting the measuring basis of horizontal direction, using more flexible convenient.
In conjunction with shown in Fig. 6, the first strut 10 is abutted with the edge of wing plate 50, and third strut 30 is abutted with web 60, and the wing
Plate 50 is located in U-shaped groove, so that shaped steel lineation device avoids wing plate 50 and 60 connecting portion of web in positioning
, the irregular solder fillet of geomery, therefore measure when do not influenced by solder fillet, improve accuracy of measurement.
In addition, before processing shaped steel, need to carry out quality testing to shaped steel, one of which Testing index is to check wing plate
Verticality between 50 and web 60.When detection, using the shaped steel lineation device in the embodiment, by the first strut 10 and wing plate
50 abut against, and third strut 30 and web 60 are abutted against, and the first measuring scale 11 is parallel with wing plate 50 at this time, the first measuring scale
11 is perpendicular with the second measuring scale 31, the relative position between web 60 and the second measuring scale 31 is observed, such as web 60 and second
Measuring scale 31 is parallel, illustrates that the wing plate 50 of the shaped steel and 60 verticality of web are qualified；As web 60 and the second measuring scale 31 are uneven
Row, illustrates that the wing plate 50 of the shaped steel and 60 verticality of web are unqualified.
As a kind of embodiment, in conjunction with shown in Fig. 2 and Fig. 3, the second strut 20 includes loop bar 21 and mobile bar 22.Loop bar 21
It is vertically arranged with the first strut 10, and first end is fixedly connected with the first end of the first strut 10.Mobile bar 22 and loop bar 21
Second end is telescopically connected, and is fixedly connected with two connecting rods 40.
The thickness of the shaped steel of different model, wing plate 50 is different, to adapt to the wing plate 50 of different-thickness, by loop bar 21 and movement
Bar 22 is designed as being telescopically connected structure.First strut 10, the second strut 20 and the connecting rod 40 close to the first strut 10, constitute U
Connected in star, wing plate 50 are located in U-shaped groove.When adjusting the width of U grooves, stretching between mobile bar 22 and loop bar 21 is adjusted
Contracting amount.Mobile bar 22 is connected with two connecting rods 40, therefore when the horizontal position of adjusting mobile bar 22, two connecting rods 40 are therewith
It is mobile.
If a connecting rod 40 is connected with mobile bar 22, another connecting rod 40 is connected with loop bar 21, then third strut
Stretching structure is also set accordingly on 30, the difficulty for increasing processing and using.Therefore two connecting rods 40 are and mobile bar
22 are connected, convenient for adjusting.
In the present embodiment, in conjunction with shown in Fig. 3, the second end of loop bar 21 is equipped with limit hole 211 along the length direction of loop bar 21.
Mobile bar 22 is arranged in limit hole 211.One end that mobile bar 22 is connected with loop bar 21 is equipped with multiple location holes 221.It is multiple fixed
Position hole 221 is in single-row arrangement along the length direction of mobile bar 22.Second strut 20 further includes for fixing loop bar 21 and mobile bar
22 caging bolt 23.Caging bolt 23 passes through location hole 221.
Mobile bar 22 is inserted into limit hole 211, and after location determination, caging bolt 23 is passed through location hole 221, by loop bar 21
It is fixed together with mobile bar 22.When adjusting the stroke of loop bar 21 and mobile bar 22, caging bolt 23 is unscrewed, by mobile bar
22 move left and right, and tighten caging bolt 23 after location determination again.Preferably, the diameter of the screw rod of caging bolt 23 and each positioning
The diameter in hole 221 is consistent, and connection is more firm.
As a kind of embodiment, in conjunction with shown in Fig. 2 and Fig. 4, each connecting rod 40 includes main strut 41 and secondary strut 42.
The second end of main strut 41 is fixedly connected with third strut 30.The first end of secondary strut 42 is fixedly connected with the second strut 20, and
Second end and the first end of main strut 41 are telescopically connected.
The shaped steel of different model, in the vertical direction, the edge and the distance between web 60 of wing plate 50 are also different,
To adapt to the shaped steel of different model, it is set as the main strut 41 of each connecting rod 40 and secondary strut 42 to be telescopically connected structure.Two
A connecting rod 40 is arranged in parallel, and when adjusting needs two connecting rods 40 being adjusted in synchronism.When two main struts 41 move, the is driven
Three struts 30 move.When two secondary struts 42 move, the second strut 20 and the first strut 10 is driven to move.
In the present embodiment, in conjunction with shown in Fig. 4, the first end of main strut 41 is equipped with pilot hole along the length direction of main strut 41
411.The second end of secondary strut 42 is arranged in pilot hole 411.The second end of secondary strut 42 is equipped with multiple adjustment holes 421.It is multiple
Adjustment hole 421 is in single-row arrangement along the length direction of secondary strut 42.Connecting rod 40 further includes for fixing main strut 41 and secondary branch
The fixing bolt 43 of bar 42.Fixing bolt 43 passes through adjustment hole 421.
The second end of secondary strut 42 is inserted into pilot hole 411, will after the relative position determination of secondary strut 42 and main strut 41
Fixing bolt 43 passes through adjustment hole 421, main strut 41 and secondary strut 42 is fixed together.When adjusting main strut 41 and secondary strut
When 42 stroke, fixing bolt 43 is unscrewed, main strut 41 or secondary strut 42 are moved up and down, is tightened again after location determination solid
Determine bolt 43.Preferably, the diameter of the screw rod of fixing bolt 43 is consistent with the diameter of each adjustment hole 421 so that connection is more
It is firm.
Specifically, in conjunction with shown in Fig. 1 and Fig. 2, third strut 30, the main strut with the connecting rod 40 close to the first strut 10
41 be in integral structure, and junction is fillet.Connecting rod 40 close to the first strut 10 is head rod.First strut 10,
The connecting rod 40 of second strut 20 and close first strut 10, constitutes U-shaped groove, and wing plate 50 is located in U-shaped groove, the first connection
The junction of bar and third strut 30, it is adjacent with wing plate 50 and the solder fillet position of the connecting portion of web 60.First is connected
Extension bar is structure as a whole with the setting of third strut 30, and junction is set as fillet, is positioned convenient for shaped steel lineation device, is easy behaviour
Make.
As a kind of embodiment, in conjunction with shown in Fig. 2 and Fig. 5, the length direction of 30 upper edge third strut 30 of third strut is set
There is sliding slot 32.The shaped steel lineation device further includes sliding block 33, baffle 34 and for baffle 34 to be fixed on third strut 30
Jackscrew.The first end of sliding block 33 is connected with the second measuring scale 31, and is arranged in sliding slot 32.Baffle 34 and the second of sliding block 33
End is fixedly connected, and end rides upon on third strut 30.
In the vertical direction, the height of baffle 34 is more than the height of sliding slot 32, therefore the upper and lower ends of baffle 34 ride upon
On third strut 30, and fixed by jackscrew.When shaped steel lineation device positions, jackscrew is unscrewed, baffle 34, which drives, at this time slides
Block 33 is moved along sliding slot 32 to the direction far from the first strut 10, to drive the second measuring scale 31 to separate first strut 10
It moves in direction.At this point, the first strut 10, the second strut 20 and close to the first strut 10 connecting rod 40 form U-shaped groove, open
It is opened at mouthful, convenient for wing plate 50 to be placed in U-shaped groove.After shaped steel lineation device positions, by the second measuring scale 31 to close
The direction of first strut 10 is moved, and can measure 60 size in the horizontal direction of web at this time, convenient for after scribing line to web 60 into
Row cutting.
As a kind of embodiment, in conjunction with shown in Fig. 2 and Fig. 6, the first measuring scale 11 is protruded from close to the side of connecting rod 40
First strut 10 is close to the side of connecting rod 40.As shown in fig. 6, in the horizontal direction, the left side of the first measuring scale 11 is than first
The left side of strut 10 is protruded, and when positioning, the right side edge of wing plate 50 is abutted with the left side of the first strut 10, by the end of wing plate 50
Face is abutted with the blade of the first measuring scale 11, and graduation mark is close to the end face of wing plate 50 at this time, convenient for measuring or crossing.
In the present embodiment, in conjunction with shown in Fig. 2 and Fig. 6, side of second measuring scale 31 far from the second strut 20 protrudes from
Side of three struts 30 far from the second strut 20.As shown in fig. 6, in the vertical direction, the lower edge of the second measuring scale 31 is than
The lower edges of three struts 30 protrudes, and when positioning, the lower edge of third strut 30 is abutted with the top edge of web 60, by web 60
End face abutted with the blade of the second measuring scale 31, graduation mark is close to the end face of web 60 at this time, convenient for measure or scribing line.
Specifically, in conjunction with shown in Fig. 2 and Fig. 6, the second measuring scale 31 is after the direction movement to close first strut 10, energy
It is enough to be abutted against with the first measuring scale 11.When second measuring scale 31 is abutted with the first measuring scale 11, can be with the edge of wing plate 50
Measuring line measures the size of web 60 in the horizontal direction, measures more accurate.
Shaped steel lineation device in the program can eliminate the welding of the wing plate and web connecting portion of shaped steel convenient for positioning
Fillet, influence when being positioned to shaped steel lineation device, it is accurate and convenient to use to measure, and reduces accumulated error, improves and surveys
Accuracy is measured, production efficiency is improved in save trouble and labor.
Embodiment described above is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to before
Embodiment is stated the utility model is described in detail, it will be understood by those of ordinary skill in the art that：It still can be with
Technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；And
These modifications or replacements, the spirit for various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
And range, it should be included within the scope of protection of this utility model.
Claims (10)
1. shaped steel lineation device, which is characterized in that including：
First strut is arranged in parallel with the wing plate of shaped steel；
Second strut is vertically arranged with first strut, and first end is connected with the first end of first strut；
Third strut is arranged in parallel with second strut, and is located at the homonymy of second strut with first strut；
Two connecting rods being mutually parallel；Each connecting rod is arranged in parallel with first strut, and first end and institute
State that the second strut is connected, second end is connected with the third strut；Two connecting rods are located at described with second strut
The homonymy of first strut；
First measuring scale is fixed on first strut, and length direction is consistent with the length direction of the first strut；With
Second measuring scale is connected with the third strut, and length direction is consistent with the length direction of third strut；It is described
Second measuring scale can be moved along the length direction of the third strut.
2. shaped steel lineation device according to claim 1, which is characterized in that second strut includes：
Loop bar is vertically arranged with first strut, and first end is fixedly connected with the first end of first strut；With
Mobile bar is telescopically connected with the second end of the loop bar, and is fixedly connected with two connecting rods.
3. shaped steel lineation device according to claim 2, it is characterised in that：The second end of the loop bar is along the loop bar
Length direction is equipped with limit hole；The mobile bar is arranged in the limit hole；
One end that the mobile bar is connected with the loop bar is equipped with multiple location holes；Multiple location holes are along the mobile bar
Length direction is in single-row arrangement；
Second strut further includes the caging bolt for fixing the loop bar and the mobile bar；The caging bolt passes through
The location hole.
4. shaped steel lineation device according to claim 1, which is characterized in that each the connecting rod includes：
Main strut, second end are fixedly connected with the third strut；With
Secondary strut, first end are fixedly connected with second strut, and second end and the first end of the main strut are telescopically connected.
5. shaped steel lineation device according to claim 4, it is characterised in that：The first end of the main strut is along the main branch
The length direction of bar is equipped with pilot hole；The second end of the pair strut is arranged in the pilot hole；
The second end of the pair strut is equipped with multiple adjustment holes；Multiple adjustment holes are in single along the length direction of the secondary strut
Row's arrangement；
The connecting rod further includes the fixing bolt for fixing the main strut and the secondary strut；The fixing bolt passes through
The adjustment hole.
6. shaped steel lineation device according to claim 4, it is characterised in that：The third strut, with close described first
The main strut of the connecting rod of strut is in integral structure, and junction is fillet.
7. shaped steel lineation device according to claim 1, it is characterised in that：Third strut described in the third strut upper edge
Length direction be equipped with sliding slot；
The shaped steel lineation device further includes：
Sliding block, first end is connected with second measuring scale, and is arranged in the sliding slot；
Baffle is fixedly connected with the second end of the sliding block, and end rides upon on the third strut；With for by the gear
Plate is fixed on the jackscrew on the third strut.
8. shaped steel lineation device according to claim 1, it is characterised in that：First measuring scale is close to the connecting rod
Side, protrude from first strut close to the side of the connecting rod.
9. shaped steel lineation device according to claim 8, it is characterised in that：Second measuring scale is far from described second
The side of bar protrudes from side of the third strut far from second strut.
10. according to claim 1 to 9 any one of them shaped steel lineation device, it is characterised in that：Second measuring scale to
After the movement of the direction of first strut, it can be abutted against with first measuring scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721854304.XU CN207696511U (en) | 2017-12-26 | 2017-12-26 | Shaped steel lineation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721854304.XU CN207696511U (en) | 2017-12-26 | 2017-12-26 | Shaped steel lineation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207696511U true CN207696511U (en) | 2018-08-07 |
Family
ID=63029102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721854304.XU Active CN207696511U (en) | 2017-12-26 | 2017-12-26 | Shaped steel lineation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207696511U (en) |
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2017
- 2017-12-26 CN CN201721854304.XU patent/CN207696511U/en active Active
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