CN110026923A - A kind of crane quickly adjusted for pinking schlieren region to be measured - Google Patents
A kind of crane quickly adjusted for pinking schlieren region to be measured Download PDFInfo
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- CN110026923A CN110026923A CN201910341443.XA CN201910341443A CN110026923A CN 110026923 A CN110026923 A CN 110026923A CN 201910341443 A CN201910341443 A CN 201910341443A CN 110026923 A CN110026923 A CN 110026923A
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- hole
- fixed
- square
- pinking
- schlieren
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/10—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting holders for tool or work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention proposes a kind of cranes quickly adjusted for pinking schlieren region to be measured, belong to schlieren experiment devices field, including pedestal, top plate, fixed support component, slide assemblies, support column assembly, clamp assembly, adjusting screw rod and adjusting nut；Pedestal and top plate are respectively designed with square through hole and square groove with fixed support component and slide assemblies cooperation, fixed support component and support column assembly support crane as bearing member, slide assemblies can make big stroke sliding according to the actual size of detonation chamber, two adjusting screw rods are individually fixed in fixed support component and slide assemblies, it is assembled while clamp assembly clamps detonation chamber with adjusting nut, detonation chamber can be driven to slide together by rotating adjusting nut, to realize the quick adjustment of regional location to be measured.The present invention can overcome the problems, such as that the fixed difficult, adjustable range of existing lifting platform and pinking chamber size support that range is limited, provide support to the smooth development of pinking schlieren experiment.
Description
Technical field
When the present invention relates to a kind of using stration technique research detonation wave propagation process, detonation chamber area to be measured can be quickly adjusted
The crane in domain belongs to schlieren experiment devices field.
Background technique
In pinking research field, schlieren is one of most common flash ranging means, is on the one hand attributed to the knot of schlieren system
Structure is simple, cost is relatively low, on the other hand can be intuitively displayed the interaction process of shock wave during flame propagation, helps to grind
The person of studying carefully understands the mechanism that pinking is formed.
The common layout of schlieren system is " Z " font, i.e. point light source forms directional light after the first concave mirror, is passed through
Region to be measured, then pass through the edge of a knife from the second concave mirror, finally shot by high-speed camera.Building schlieren system
In the process, optical path adjustment finishes just no longer changes substantially, particularly with the feelings of concave mirror larger (diameter is at tens centimetres or more)
Condition, because the weight of each device of system is larger, and shooting effect is extremely sensitive to the change in location of light path devices, once it carries out high
Low or pitch regulation, then preferable shooting effect can just be obtained by needing to take a substantial amount of time.Therefore, if measured zone need to be changed,
Common operation is the position for adjusting experimental piece.
However, detonation chamber biggish for some quality and size, the adjustment convenience of regional location to be measured are poor.It is existing
Some solutions are mainly using manually or electrically lifting platform, but the method has following inconvenience in implementation process.Firstly,
Detonation chamber can generate thrust and slide when working, and the table top of lifting platform is mostly smooth surface, therefore need to additionally have a sleeve clamp made to order
The two is fixed, this will be such that experimental cost greatly increases；Secondly, the lifting platform for determining size, height adjustment range have
It limits (the corresponding adjustable range of such as 20 × 20cm mesa dimensions is usually no more than 30cm), adjusting needed for being not necessarily able to satisfy experiment
Range；In addition, the general traverse of detonation chamber is on Lifting platform, it is meant that pinking need to be moved when adjusting region to be measured in the horizontal direction
Room, therefore the vertical lift performance of lifting platform will have no ample scope for abilities.Research both domestic and external is made a general survey of, at present still without a especially suitable
For the mechanism that pinking schlieren region to be measured is quickly adjusted, therefore, design that a structure is simple, cost is relatively low, the scope of application
Wider crane is of great significance for the smooth development of pinking schlieren experiment.
Summary of the invention
In pinking schlieren measure field, the adjusting of regional location to be measured is relatively conventional operation.Used lifting platform
Generally existing fixed defect difficult, adjustable range is limited, pinking chamber size supports range limited, to the development band of schlieren experiment
It is greatly inconvenient to come.To solve the above-mentioned problems, the invention proposes one kind, cost is relatively low, easy to operate, while to region to be measured
The adjusting of position and pinking chamber size have the crane compared with strong adaptability.
In order to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of crane quickly adjusted for pinking schlieren region to be measured, including pedestal, fixed support component, Slide Group
Part, support column assembly, clamp assembly, adjusting screw rod, adjusting nut and top plate, it is characterised in that: fixed support component is installed on
First square through hole of pedestal, slide assemblies are placed in the second square through hole of pedestal and can make big stroke sliding (2~50cm),
To achieve the purpose that adapt to a variety of different size detonation chambers, adjusting screw rod is individually fixed in fixed support component and slide assemblies
On, the side of clamp assembly is machined with the U-type groove of through-hole and placement adjusting nut across adjusting screw rod, and the other side then clamps quick-fried
Shaking room can drive clamp assembly (i.e. detonation chamber) to slide up and down together by rotating adjusting nut, to realize region position to be measured
The quick adjustment set.
The pedestal is manufactured using steel plate, guarantees the whole stationarity of crane, and left side is machined with the first square through hole,
For fixing the assembly of support component, right side is machined with the second square through hole of 50cm long, and slide assemblies are placed within and make
Big stroke sliding, surrounding design have bolt mounting holes and the first bolt mounting groove, are respectively used to fixed support component and Slide Group
The fastening of part；The top plate material is the aluminium alloy of lighter in weight, and the left and right sides is machined with the first square groove and the respectively
Two square grooves, are respectively used to the assembly of fixed support component and slide assemblies, and upper surface design is fastened and fixed support component
With the bolt mounting holes and the second bolt mounting groove of slide assemblies；Also there are two cylindricalitys for processing respectively for the rightmost side of pedestal and top plate
Through-hole, the support column assembly (overall structure is thin ends and thick middle cylindrical body) is inserted into cylindricality through-hole, the bottom of as
Right side bearing member between seat and top plate, prevents slide assemblies from smooth can not slide under the action of top plate gravity.
The fixation support component includes fixed supported slab, the first fixed block and the second fixed block；Fixed supported slab is rectangular
Body iron plate, surface are machined with a series of bolts hole, lower end and upper end be inserted respectively into pedestal and top plate the first square through hole and
First square groove realizes positioning, realizes the fastening with pedestal and top plate by bolt, and as left side bearing member；The cunning
Dynamic component includes sliding support plate, third fixed block and the 4th fixed block；Its upper and lower side is inserted respectively into the second of top plate and pedestal
In square groove and the second square through hole, and big stroke sliding (2~50cm) can be made according to the specific size of detonation chamber；Four solid
Determining block is that side is machined with square through hole (for assembling with the adjusting screw rod), and the other side is threaded the iron block in hole,
First fixed block and the second fixed block are assemblied in the upper and lower side of fixed supported slab by bolt respectively, and third fixed block and the 4th fix
Block is assemblied in the upper and lower side of sliding support plate by bolt respectively.
The adjusting screw rod quantity is two, length 1m, and both ends are square cylinder, and the surface of middle section is machined with
Screw thread；The square cylinder of two adjusting screw rods is inserted respectively into two fixed blocks of the fixation support component and slide assemblies
Square through hole in, guarantee the positioning and fastening of adjusting screw rod, intermediate threaded cylindrical is used for the up and down adjustment of detonation chamber position.
The clamp assembly includes two clamp blocks, is fastened respectively by bolt and detonation chamber two sides, by fixture group
Part and detonation chamber are assembled into an entirety, and the other side is U-shaped shape, and is machined with cylindrical hole, may pass through adjusting screw rod simultaneously
It is arbitrarily slided in it.
The adjusting nut quantity is two, is respectively placed in the U-type groove of two clamp blocks, and adjusts spiral shell
Mother is about 2mm at a distance from U-type groove edge, on the one hand makes adjusting nut smooth rotation in U-type groove, on the other hand avoids adjusting
There are larger gaps for nut and clamp block U-type groove edge, have clamp assembly in above-below direction and loosen；Two adjusting nuts with
Two clamp blocks are respectively assembled in two adjusting screw rods, while rotating two adjusting nuts, can drive clamp assembly and pinking
One-dimensional sliding (range 1m) is made in room in above-below direction, realizes the quick adjusting in detonation chamber region to be measured.
The utility model has the advantages that crane is adjusted using schlieren provided by the invention region to be measured, it, can spirit by rotating adjusting nut
The living upper and lower position for adjusting detonation chamber measured zone, easy to operate, range is up to 1m, be twice of same scale elevator platform with
On, and its structure is more simple, even if detonation chamber is still able to achieve being connected between the two under high-frequency ignition；In addition, sliding branch
The sliding stroke of plate is suitable for the case where detonation chamber width dimensions are within 50cm, the adaptation to pinking chamber size up to 50cm
Property is more broad.
Detailed description of the invention
Fig. 1 is pinking schlieren light path system schematic diagram.
Fig. 2 is crane overall structure diagram.
Fig. 3 is pedestal, support column assembly and top plate assembling schematic diagram.
Fig. 4 is fixed support component, slide assemblies and adjusting screw rod assembling schematic diagram.
Fig. 5 is clamp assembly and adjusting nut assembling schematic diagram.
Wherein, 1 is crane, and 2 be light source, and 3 be aperture, and 4 be the first concave mirror, and 5 be the second concave mirror, and 6 be the edge of a knife, 7
For high-speed camera, 1-1 is pedestal, and 1-2 is top plate, and 1-3 is fixed supported slab, and 1-4 is sliding support plate, and 1-5 is the first support column,
1-6 is the second support column, and 1-7 is the first adjusting screw rod, and 1-8 is the second adjusting screw rod, and 1-9 is the first adjusting nut, and 1-10 is
Second adjusting nut, 1-11 are the first fixed block, and 1-12 is the second fixed block, and 1-13 is third fixed block, and 1-14 is the 4th solid
Determine block, 1-15 is the first clamp block, and 1-16 is the second clamp block, and 1-17 is detonation chamber, and 1-18 is the first square through hole, and 1-19 is
Second square through hole, 1-20 are the first bolt mounting groove, and 1-21 is the first cylindricality through-hole, and 1-22 is the second cylindricality through-hole, 1-23
For the first square groove, 1-24 is the second square groove, and 1-25 is the second bolt mounting groove, and 1-26 is third cylindricality through-hole, 1-
27 be the 4th cylindricality through-hole.
Specific embodiment
With reference to the accompanying drawing and specific implementation process the invention will be further described.
Referring to Fig. 1, before carrying out schlieren measure, first by light source 2, aperture 3, the first concave mirror 4, the second concave mirror 5, knife
The center of the devices such as mouth 6, high-speed camera 7 is adjusted to sustained height, guarantees that the directional light of the first concave mirror 4 reflection be able to be thrown completely
It is mapped on the second concave mirror 5, in addition makes the light between aperture 3 and the first concave mirror 4, with the first concave mirror 4 and the second concave surface
The angle of light maintains 10~20 ° of a small ranges between mirror 5, improves the shooting effect of schlieren image, detonation chamber 1-17 is (by rising
Drop frame 1 clamps) it is placed in the parallel rays between the first concave mirror 4 and the second concave mirror 5, thus schlieren system has been built
It is whole.
Referring to fig. 2, Fig. 3 and Fig. 4, crane 1 is whole to use modularized design, is spliced by multiple subassemblies.Pedestal
The left and right ends 1-1 are machined with the first square through hole 1-18 and the second square through hole 1-19, are respectively used to fixed supported slab 1-3 and sliding
The cooperation of supporting plate 1-4, left side design have bolt mounting holes, after fixed supported slab 1-3 is inserted into the first square through hole 1-18, pass through
Bolt realizes being connected for the two, and the front-back design on right side has the first bolt mounting groove 1-20, sliding support plate 1-4 rectangular second
It horizontally slips in through-hole 1-19, suitable position is slided into according to the specific size of detonation chamber 1-17 in experimentation, it is then logical
It crosses bolt sliding support plate 1-4 is anchored in pedestal 1-1.The left and right ends top plate 1-2 are machined with the first square groove 1-23 and
The upper end of two square groove 1-24, fixed supported slab 1-3 and sliding support plate 1-4 are inserted respectively into two grooves, the bolt in left side
Mounting hole and the second bolt mounting groove 1-25 on right side are respectively used to the tight of fixed supported slab 1-3 and sliding support plate 1-4 and top plate 1-2
Gu.First support column 1-5 and the second support column 1-6 is thick cylinder between the detail of both ends, the both ends buttress shaft of the first support column 1-5
Body is inserted respectively into the both ends buttress shaft body difference of the first cylindricality through-hole 1-21 and third cylindricality through-hole 1-26, the second support column 1-6
Be inserted into the second cylindricality through-hole 1-22 and the 4th cylindricality through-hole 1-27, among two support columns thicker part by pedestal 1-1 and
Top plate 1-2 is supported as bearing member, prevents sliding support plate 1-4 under the action of top plate 1-2 gravity from smooth can not slide (such as
Shown in Fig. 3).First fixed block 1-11, the second fixed block 1-12, third fixed block 1-13 and the 4th fixed block 1-14 are one end
It is machined with square through hole, the iron block for having threaded hole is designed in the other side, can be fixed by the first fixed block 1-11 and second by bolt
Block 1-12 is connected with fixed supported slab 1-3, and third fixed block 1-13 and the 4th fixed block 1-14 are connected with sliding support plate 1-4.The
The length of one adjusting screw rod 1-7 and the second adjusting screw rod 1-8 are 1m, and both ends are machined with square cylinder, and centre is threaded rod, and
The sectional dimension of square cylinder is smaller than the sectional dimension of threaded rod, when the square cylinder at the first both ends adjusting screw rod 1-7 is inserted into
The square cylinder of the square through hole of first fixed block 1-11 and the second fixed block 1-12, the second both ends adjusting screw rod 1-8 is inserted into
After the square through hole of third fixed block 1-13 and the 4th fixed block 1-14, it is ensured that 6 freedom degrees of two adjusting screw rods are tight
Lattice are limited, avoid the later period when adjusting detonation chamber 1-17 regional location to be measured, two adjusting screw rods occur to loosen and to being adjusted
Journey makes troubles (as shown in Figure 4).
It is made of referring to fig. 2 with Fig. 5, clamp assembly the first clamp block 1-15 and the second clamp block 1-16.First clamp block
The side design of 1-15 and the second clamp block 1-16 has bolt hole, realizes fastening (such as Fig. 2 by bolt and detonation chamber 1-17
It is shown), the other side is U-type groove, and design has a cylindrical hole, and size just may pass through two adjusting screw rods and smooth in it
Sliding, the first adjusting nut 1-9 and the second adjusting nut 1-10 are placed individually into two U-type grooves, and apart from U-type groove edge
Distance is in 2mm or so, it is ensured that two adjusting nuts in U-type groove under the premise of smooth rotation, the first clamp block 1-15 of limitation and
Loosening of the second clamp block 1-16 in vertical direction；First adjusting nut 1-9 and the design of the second surface adjusting nut 1-10 have rolling
Flower, prevents from skidding in adjustment process, and interior design has and the first adjusting screw rod 1-7 and the second adjusting screw rod 1-8 cooperation
Screw thread (as shown in Figure 5).After clamp assembly assembles, it is inserted into the first adjusting screw rod 1-7 and the second adjusting screw rod 1-8,
Detonation chamber 1-17 is supported, while rotating the first adjusting nut 1-9 and the second adjusting nut 1-10, detonation chamber 1- can be driven
17 is mobile (range 1m) in vertical direction, to facilitate the region to be measured adjusted in schlieren experiment；After adjusting,
Under the action of clamp assembly and detonation chamber 1-17 gravity, the first adjusting nut 1-9 and the first adjusting screw rod 1-7, second is adjusted
Thread contact face between nut 1-10 and the second adjusting screw rod 1-8 is tightly pushed down, and introducing self-locking function is equivalent to, and prevents
One adjusting nut 1-9 and the second adjusting nut 1-10 occur voluntarily sliding during the experiment.
A specific embodiment of the invention is described in detail in conjunction with attached drawing and specific implementation process above, but this hair
Bright to be not limited to the above embodiment, those skilled in the art without departing from the principles of the invention, can be to above-mentioned
Method makes various changes and optimization.
Claims (6)
1. a kind of crane quickly adjusted for pinking schlieren region to be measured, including pedestal, fixed support component, Slide Group
Part, support column assembly, clamp assembly, adjusting screw rod, adjusting nut and top plate, it is characterised in that: fixed support component is installed on
First square through hole of pedestal, slide assemblies are placed in the second square through hole of pedestal and can make big stroke sliding (2~50cm),
To achieve the purpose that adapt to a variety of different size detonation chambers, adjusting screw rod is individually fixed in fixed support component and slide assemblies
On, the side of clamp assembly is machined with the U-type groove of through-hole and placement adjusting nut across adjusting screw rod, and the other side then clamps quick-fried
Shaking room can drive clamp assembly (i.e. detonation chamber) to slide up and down together by rotating adjusting nut, to realize region position to be measured
The quick adjustment set.
2. a kind of crane quickly adjusted for pinking schlieren region to be measured according to claim 1, it is characterised in that:
The pedestal is manufactured using steel plate, guarantees the whole stationarity of crane, left side is machined with the first square through hole, for fixing
The assembly of support component, right side are machined with the second square through hole of 50cm long, and slide assemblies are placed within and make big stroke cunning
Dynamic, surrounding design has bolt mounting holes and the first bolt mounting groove, is respectively used to the fastening of fixed support component and slide assemblies；
The top plate material is the aluminium alloy of lighter in weight, and the left and right sides is machined with the first square groove and second rectangular recessed respectively
Slot, is respectively used to the assembly of fixed support component and slide assemblies, and upper surface design is fastened and fixed support component and Slide Group
The bolt mounting holes of part and the second bolt mounting groove；Also there are two cylindricality through-hole, institutes for processing respectively for the rightmost side of pedestal and top plate
The support column assembly (overall structure is thin ends and thick middle cylindrical body) stated is inserted into cylindricality through-hole, as pedestal and top plate
Between right side bearing member, prevent slide assemblies from smooth can not slide under the action of top plate gravity.
3. a kind of crane quickly adjusted for pinking schlieren region to be measured according to claim 1 or 2, feature exist
In: the fixation support component includes fixed supported slab, the first fixed block and the second fixed block；Fixed supported slab is cuboid iron
Plate, surface are machined with a series of bolts hole, and lower end and upper end are inserted respectively into the first square through hole and first of pedestal and top plate
Square groove realizes positioning, realizes the fastening with pedestal and top plate by bolt, and as left side bearing member；The Slide Group
Part includes sliding support plate, third fixed block and the 4th fixed block；Its upper and lower side is inserted respectively into top plate and the second of pedestal rectangular
In groove and the second square through hole, and big stroke sliding (2~50cm) can be made according to the specific size of detonation chamber；Four fixed blocks
For side be machined with square through hole (for the described adjusting screw rod assembly), the other side is threaded the iron block in hole, first
Fixed block and the second fixed block are assemblied in the upper and lower side of fixed supported slab by bolt respectively, and third fixed block and the 4th fixed block are logical
Cross the upper and lower side that bolt is assemblied in sliding support plate respectively.
4. a kind of crane quickly adjusted for pinking schlieren region to be measured according to claim 1 or 3, feature exist
In: the adjusting screw rod quantity is two, length 1m, and both ends are square cylinder, and the surface of middle section is threaded；
The square cylinder of two adjusting screw rods is inserted respectively into the side of two fixed blocks of the fixation support component and slide assemblies
In shape through-hole, guarantee the positioning and fastening of adjusting screw rod, intermediate threaded cylindrical is used for the up and down adjustment of detonation chamber position.
5. a kind of crane quickly adjusted for pinking schlieren region to be measured according to claim 1 or 4, feature exist
Include two clamp blocks in: the clamp assembly, fastened respectively by bolt and detonation chamber two sides, by clamp assembly with it is quick-fried
Shake room is assembled into an entirety, and the other side is U-shaped shape, and is machined with cylindrical hole, may pass through adjusting screw rod and in it
Arbitrarily sliding.
6. a kind of crane quickly adjusted for pinking schlieren region to be measured, feature exist according to claim 1 or 5
In: the adjusting nut quantity is two, is respectively placed in the U-type groove of two clamp blocks, and adjusting nut and U
The distance at type groove edge is about 2mm, on the one hand makes adjusting nut smooth rotation in U-type groove, on the other hand avoids adjusting nut
There are larger gaps with clamp block U-type groove edge, have clamp assembly in above-below direction and loosen；Two adjusting nuts and two
Clamp block is respectively assembled in two adjusting screw rods, while rotating two adjusting nuts, and clamp assembly and detonation chamber can be driven to exist
Up and down direction makees one-dimensional sliding (range 1m), realizes the quick adjusting in detonation chamber region to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910341443.XA CN110026923B (en) | 2019-04-26 | 2019-04-26 | Lifting frame for quickly adjusting to-be-detected area of knocking schlieren |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910341443.XA CN110026923B (en) | 2019-04-26 | 2019-04-26 | Lifting frame for quickly adjusting to-be-detected area of knocking schlieren |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110026923A true CN110026923A (en) | 2019-07-19 |
| CN110026923B CN110026923B (en) | 2021-02-12 |
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ID=67240366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910341443.XA Active CN110026923B (en) | 2019-04-26 | 2019-04-26 | Lifting frame for quickly adjusting to-be-detected area of knocking schlieren |
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| Country | Link |
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| CN (1) | CN110026923B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2192146A (en) * | 1986-06-10 | 1988-01-06 | Peter N Jackson | A transverse clamp |
| CN107315010A (en) * | 2017-08-15 | 2017-11-03 | 合肥工业大学 | A kind of lightweight schlieren |
| CN107758562A (en) * | 2017-11-20 | 2018-03-06 | 国网山东省电力公司龙口市供电公司 | A kind of lift for power construction |
| CN108214346A (en) * | 2017-11-28 | 2018-06-29 | 浙江卓怡纺织有限公司 | A kind of cross pipe fitting fixed mechanism |
| CN109368992A (en) * | 2018-12-29 | 2019-02-22 | 蚌埠凯盛工程技术有限公司 | A kind of glass pressing machine elevation and subsidence regulating device that can adjust wide cut |
-
2019
- 2019-04-26 CN CN201910341443.XA patent/CN110026923B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2192146A (en) * | 1986-06-10 | 1988-01-06 | Peter N Jackson | A transverse clamp |
| CN107315010A (en) * | 2017-08-15 | 2017-11-03 | 合肥工业大学 | A kind of lightweight schlieren |
| CN107758562A (en) * | 2017-11-20 | 2018-03-06 | 国网山东省电力公司龙口市供电公司 | A kind of lift for power construction |
| CN108214346A (en) * | 2017-11-28 | 2018-06-29 | 浙江卓怡纺织有限公司 | A kind of cross pipe fitting fixed mechanism |
| CN109368992A (en) * | 2018-12-29 | 2019-02-22 | 蚌埠凯盛工程技术有限公司 | A kind of glass pressing machine elevation and subsidence regulating device that can adjust wide cut |
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| Publication number | Publication date |
|---|---|
| CN110026923B (en) | 2021-02-12 |
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