CN207335407U - Adjustable cushion block and the rotary kiln with the adjustable cushion block - Google Patents
Adjustable cushion block and the rotary kiln with the adjustable cushion block Download PDFInfo
- Publication number
- CN207335407U CN207335407U CN201721071639.4U CN201721071639U CN207335407U CN 207335407 U CN207335407 U CN 207335407U CN 201721071639 U CN201721071639 U CN 201721071639U CN 207335407 U CN207335407 U CN 207335407U
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- China
- Prior art keywords
- guide groove
- rotating cylinder
- adjustable cushion
- adjusting bolt
- backing ring
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Abstract
The utility model provides a kind of adjustable cushion block, including the base with guide groove, the sliding block in guide groove, the jacking block in guide groove and adjusting bolt, the base is equipped with through hole, the adjusting bolt is threadedly coupled through through hole and with sliding block, one surface of the sliding block and the bottom connection of guide groove touch, another surface of the sliding block is equipped with active inclined-plane, and a surface of the jacking block is equipped with passive inclined-plane, and the passive inclined-plane fits with active inclined-plane；Rotate forward adjusting bolt, adjusting bolt band movable slider slides to the left, the passive inclined-plane of active slope driving and jacking block of sliding block along guide groove side wall and moved along the direction of the bottom away from guide groove；Rotate backward adjusting bolt, adjusting bolt band movable slider slides to the right, jacking block along guide groove side wall and moved along the direction of the bottom close to guide groove.Adjustable cushion block in the utility model, it is adjustable to realize its integral thickness.The invention also discloses a kind of rotary kiln.
Description
Technical field
A kind of adjustable cushion block is the utility model is related to, more particularly to a kind of adjustable cushion block and there is the adjustable pad
The rotary kiln of block.
Background technology
In cement industry and the Slag treatment industry of steel-making, (can hereinafter referred to as it be returned using large-scale rotary kiln and its roller
Drum body), subsequent technique processing is carried out to cement slurry or slag.The own wt of usual rotating cylinder, and it is full
Weight under load operating region is very heavy.The weight of rotating cylinder generally all arrives hundreds of tons tens, and diameter is generally 1.5
Rice is between 4 meters.Usually it is relatively fixed on rotating cylinder and backing ring is installed, and be in contact using backing ring with support roller, so as to carries
The weight of its overall rotating cylinder, and rolled by backing ring and the opposite of support roller, realize the revolution of rotating cylinder.
To ensure that rotating cylinder can be turned round stably, it need to ensure that backing ring keeps good concentricity with rotating cylinder.In life
In production practice, because rotating cylinder and backing ring are large-scale workpiece, the processing progress of single part is relatively more unmanageable, and two
Assembly precision between a part is more difficult to control, so as to be difficult to ensure that when backing ring is directly installed on rotating cylinder, two
Person keeps good concentricity., it is necessary to which rotating cylinder and backing ring are fitted close from the point of view of the demand of applying working condition；But from installation and
Replace the angle safeguarded to set out, and need to keep appropriate gap between the two, in order to install and disassemble.Above-mentioned two opposition
Demand just generates contradiction, it is difficult to be solved by the machining tolerance between two workpiece.For this reason, in production practices, usually
Sufficiently large gap can be reserved therebetween, and is solved using backing plate to adjust.But the adjustment structure of existing backing plate, exists
Gap adjustment is uneven, coordinates untight problem with rotating cylinder and backing ring, so as to cause the concentric of rotating cylinder and backing ring
Degree is difficult to ensure that.
Utility model content
In view of the foregoing deficiencies of prior art, the technical problems to be solved in the utility model is to provide a kind of structure
Simple adjustable cushion block.
To achieve the above object, the utility model provides a kind of adjustable cushion block, including the base with guide groove, is located at
Sliding block in guide groove, the jacking block in guide groove and adjusting bolt, the base are equipped with through hole, the adjusting spiral shell
Through through hole and being threadedly coupled with sliding block, a surface of the sliding block and the bottom connection of guide groove touch bolt, the sliding block it is another
One surface is equipped with active inclined-plane, and a surface of the jacking block is equipped with passive inclined-plane, the passive inclined-plane and active inclined-plane phase
Fitting；Adjusting bolt is rotated forward, adjusting bolt band movable slider slides to the left, the passive inclined-plane of active slope driving of sliding block and top
Block along guide groove side wall and moved along the direction of bottom away from guide groove；Adjusting bolt is rotated backward, adjusting bolt drives
Sliding block slides to the right, jacking block along guide groove side wall and moved along the direction of bottom close to guide groove.
Further, the base includes bottom plate, the left plate of left end positioned at bottom plate and the right side of right end positioned at bottom plate
Plate, between left plate and right panel, the through hole is located in left plate the guide groove.
Further, another surface of the jacking block is equipped with the first arc surface, the table backwards to guide groove of the base
Face is equipped with the second arc surface；And the central axis of the central axis and the second arc surface of first arc surface coincides.
Further, the radius of first arc surface is more than the radius of the second arc surface.
Further, the central axis of first arc surface is parallel with the central axis of adjusting bolt.
As described above, the adjustable cushion block that the utility model is related to, has the advantages that：
The operation principle of adjustable cushion block is in the utility model：Adjusting bolt is rotated forward, adjusting bolt connects in screw thread
Under the action of connecing, band movable slider slide to the left, the passive inclined-plane of active slope driving and jacking block of sliding block along guide groove side wall and
Moved along the direction of the bottom away from guide groove, so as to increase this adjustable cushion block along the bottom away from and close to guide groove
Thickness on direction；Adjusting bolt is rotated backward, adjusting bolt is under the action of threaded connection, band movable slider slides to the right, pushes up
Block along guide groove side wall and moved along the direction of bottom close to guide groove；So as to reduce this adjustable cushion block along remote
With the thickness on the direction of the bottom of guide groove.Adjustable cushion block in the utility model, it is adjustable to realize its integral thickness；
And adjustable cushion block in the utility model, using the relative movement between above-mentioned active inclined-plane and passive inclined-plane, realize that it is overall thick
The adjusting of degree, and the amplitude of accommodation of its integral thickness is realized and is continuously adjusted, so as to ensure that its regulating effect is more preferable.Separately
Outside, adjustable cushion block in the utility model, overall structure is simple, processing cost is relatively low.
Another technical problem to be solved in the utility model is to provide a kind of rotary kiln simple in structure.
To achieve the above object, the utility model provides a kind of rotary kiln, including rotating cylinder and is set in rotating cylinder
On backing ring, the backing ring passes through multiple adjustable cushion blocks and rotating cylinder tight fit.
Further, the lateral wall backwards to the surface of guide groove and rotating cylinder of the base fits；The jacking block
Another surface and the madial wall of backing ring fit.
Further, whole adjustable cushion blocks are uniformly distributed along the circumferential direction of rotating cylinder.
Further, the central axis of the central axis of the rotating cylinder and backing ring extends in left-right direction, described
Guide groove in left-right direction on width be more than backing ring in left-right direction on width.
Further, the rotary kiln, further includes support roller, and the support roller is in rolling contact with backing ring.
As described above, the rotary kiln that the utility model is related to, has the advantages that：
Rotary kiln in the utility model, the thickness based on its adjustable cushion block is adjustable, in an assembling process, by right respectively
The thickness of whole adjustable cushion blocks adjusts accordingly, and is moved radially to adjust backing ring relative to rotating cylinder, to ensure to hold in the palm
The concentricity of circle and rotating cylinder reaches sets requirement, so as to facilitate the assembling between backing ring and rotating cylinder.And since it can
The amplitude of accommodation of the thickness of mode cushion block can realize and continuously adjust, can be relative to rotating cylinder radially so that backing ring be effectively ensured
Mobile amplitude realizes and continuously adjusts that is, the utility model also achieves the micro tune of relative position between backing ring and rotating cylinder
Section, and then ensure the assembly precision higher of this rotary kiln.In addition, rotary kiln in the utility model, whole based on its adjustable cushion block
Body is simple in structure, processing cost is relatively low.
Brief description of the drawings
Fig. 1 is the structure diagram of adjustable cushion block in the utility model.
Fig. 2 is the left view of adjustable cushion block in the utility model.
Fig. 3 is the top view of adjustable cushion block in the utility model.
Fig. 4 is A-A sectional views in Fig. 3.
Fig. 5 is the structure diagram of rotary kiln in the utility model.
Component label instructions
1 base, 3 jacking block
11 guide groove, 31 passive inclined-plane
12 bottom plate, 32 first arc surface
13 left plate, 4 adjusting bolt
14 right panel, 5 rotating cylinder
15 second arc surface, 6 backing ring
2 sliding block, 7 support roller
21 active inclined-planes
Embodiment
Illustrate the embodiment of the utility model by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
It should be clear that structure, ratio, size depicted in this specification attached drawing etc., only coordinating specification revealed
Content, so that those skilled in the art understands and reads, is not limited to the enforceable qualifications of the utility model, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, are not influencing this practicality
Under new the effect of can be generated and the purpose that can reach, should all still it fall in the revealed technology contents institute energy of the utility model
In the range of covering.Meanwhile cited such as " on ", " under ", "left", "right", " centre " and " one " term in this specification,
It is merely convenient to narration to understand, and is not used to limit the enforceable scope of the utility model, its relativeness is altered or modified,
In the case where changing technology contents without essence, when being also considered as the enforceable category of the utility model.
As shown in Figures 1 to 4, a kind of adjustable cushion block of the utility model offer, including the base 1 with guide groove 11,
Sliding block 2 in guide groove 11, the jacking block 3 in guide groove 11 and adjusting bolt 4, base 1 are equipped with through hole, adjust
Section bolt 4 is threadedly coupled through through hole and with sliding block 2, and a surface of sliding block 2 and the bottom connection of guide groove 11 touch, sliding block 2
Another surface is equipped with active inclined-plane 21, and a surface of jacking block 3 is equipped with passive inclined-plane 31, passive inclined-plane 31 and active inclined-plane 21
Fit.The operation principle of adjustable cushion block is in the utility model：Adjusting bolt 4 is rotated forward, adjusting bolt 4 connects in screw thread
Slided to the left under the action of connecing, with movable slider 2, the active inclined-plane 21 of sliding block 2 promotes passive inclined-plane 31 and jacking block 3 along guide groove 11
Side wall and moved along the direction of bottom away from guide groove 11, led so as to increase this adjustable cushion block along away from and close to
Thickness on the direction of the bottom of groove 11；Adjusting bolt 4 is rotated backward, adjusting bolt 4 is under the action of threaded connection, drive
Sliding block 2 slides to the right, jacking block 3 along guide groove 11 side wall and moved along the direction of bottom close to guide groove 11；So as to reduce
This adjustable cushion block is along the thickness on the direction of the bottom away from and close to guide groove 11.Adjustable pad in the utility model
Block, it is adjustable to realize its integral thickness；And adjustable cushion block in the utility model, utilize above-mentioned active inclined-plane 21 and passive inclined-plane
Relative movement between 31, realizes the adjusting of its integral thickness, and the amplitude of accommodation of its integral thickness is realized and is continuously adjusted,
So as to ensure that its regulating effect is more preferable.In addition, adjustable cushion block in the utility model, overall structure is simple, processing cost is relatively low.
As shown in Figures 1 to 5, the utility model also provides a kind of rotary kiln, including rotating cylinder 5 and is set in revolving drum
Backing ring 6 on body 5, backing ring 6 pass through multiple above-mentioned adjustable cushion blocks and 5 tight fit of rotating cylinder.Rotary kiln in the utility model,
Thickness based on its adjustable cushion block is adjustable, in an assembling process, by carrying out phase to the thickness of whole adjustable cushion blocks respectively
It should adjust, be moved radially to adjust backing ring 6 relative to rotating cylinder 5, to ensure that backing ring 6 and the concentricity of rotating cylinder 5 reach
To sets requirement, so as to facilitate the assembling between backing ring 6 and rotating cylinder 5.And the adjusting of the thickness due to its adjustable cushion block
Amplitude can be realized and continuously adjusted, so that backing ring 6, which is effectively ensured, to be realized continuously relative to the amplitude that rotating cylinder 5 moves radially
Adjust, i.e. the utility model also achieves the trace regulation of relative position between backing ring 6 and rotating cylinder 5, and then ensures this revolution
The assembly precision higher of kiln.In addition, rotary kiln in the utility model, based on its adjustable cushion block, overall structure is simple, is processed into
This is relatively low.
As shown in figure 5, base 1 fits backwards to the surface of guide groove 11 and the lateral wall of rotating cylinder 5, i.e. base 1
The lateral wall of inner surface and rotating cylinder 5 fit；Another surface of jacking block 3 and the madial wall of backing ring 6 fit, i.e. jacking block
3 outer surface and the madial wall of backing ring 6 fit.Meanwhile as shown in Figures 2 to 4, in the present embodiment on the outer surface of jacking block 3
Equipped with the first arc surface 32, first arc surface 32 and the madial wall of backing ring 6 fit；The table backwards to guide groove 11 of base 1
Face is equipped with the second arc surface 15, and second arc surface 15 and the lateral wall of rotating cylinder 5 fit.Above-mentioned first arc surface 32
The central axis of central axis and the second arc surface 15 coincide, and extend in left-right direction.And first in the present embodiment
The radius of arc surface 32 is more than the radius of the second arc surface 15.Adjustable cushion block employs the knot of above-mentioned double cambered surfaces in the present embodiment
Structure designs, and solves the fit-up gap between rotating cylinder 5 and backing ring 6, concentricity and maintenance etc. well and actually encounter
Problem.
The central axis of the central axis of rotating cylinder 5 and backing ring 6 extends in left-right direction in the present embodiment.Assembling
During, the guide groove 11 of base 1 is corresponding with backing ring 6 in the lateral direction.And above-mentioned guide groove 11 in left-right direction on
Width be more than backing ring 6 in left-right direction on width, interfered to avoid backing ring 6 and the left and right sides wall of guide groove 11.
As shown in Figure 2 and Figure 4, the central axis of the first arc surface 32 and the central axis of adjusting bolt 4 in the present embodiment
Parallel, i.e. the length of adjusting bolt 4 extends in left-right direction, so that ensure adjusting bolt 4 when forward and reverse rotates, energy
Band movable slider 2 to the left and moves right respectively, and then drives jacking block 3 along inward-outward direction, i.e. moving radially along rotating cylinder 5,
And realize the adjusting of the thickness of the adjustable cushion block along rotating cylinder 5 radially.
As shown in Figures 1 to 4, in the present embodiment base 1 include bottom plate 12, positioned at bottom plate 12 left end left plate 13, with
And the right panel 14 of the right end positioned at bottom plate 12, between left plate 13 and right panel 14, upper through hole is located in left plate 13 guide groove 11.
Above-mentioned adjusting bolt 4 is threadedly coupled through the through hole in left plate 13 with sliding block 2 in the present embodiment.Left plate 13 and the right side in the present embodiment
Plate 14 extends along inward-outward direction, and right panel 14 is more than the height of left plate 13 along the height in inward-outward direction.And right panel 14 is located at
The right side of backing ring 6.Base 1 is an integral structure in the present embodiment.The right side wall of left plate 13 forms guide groove 11 in the present embodiment
Left side wall, the left side wall of right panel 14 forms the right side wall of guide groove 11.
As shown in figure 5, whole adjustable cushion blocks are uniformly distributed along the circumferential direction of rotating cylinder 5 in the present embodiment.
In addition, as shown in figure 5, rotary kiln in the present embodiment, further includes two support rollers 7, two support rollers 7 are rolled with backing ring 6
Dynamic contact, to have carried backing ring 6 and rotating cylinder 5.
The concentricity that adjustable cushion block solves between rotating cylinder 5 and backing ring 6 well in the present embodiment ensures, assembling
Stiff stability and the problem of easy to disassemble maintenance.
The specific implementation step that adjustable cushion block is applied on rotary kiln in the present embodiment is as follows：
1) newly made or the modification scheme design phase in engineering project, it is appropriate just will to be reserved between rotating cylinder 5 and backing ring 6
Radial fit gap, according to actual condition, which is averagely not less than 20mm, according to investigation statistics, on
The radial fit gap of 20mm is stated less than the preset clearance in conventional production practices between required rotating cylinder 5 and backing ring 6.
2) difference according to the inner sidewall diameter of the outer sidewall diameter of rotating cylinder 5 and backing ring 6 and between the two is closed
System, processes suitable above-mentioned adjustable cushion block, and ensures that the adjustment stroke of adjustable cushion block meets the needs actually adjusted, and
Reserve 20% adjustable surplus.
3) in actually manufacture or transformation project, when feeling relieved first, i.e., the concentric of rotating cylinder 5 and backing ring 6 is adjusted first
When spending, station is installed in the setting that need to be sleeved on backing ring 6 on rotating cylinder 5 first, then is evenly distributed between backing ring 6 and rotating cylinder 5
And 3 above-mentioned adjustable cushion blocks are fixed, and corresponding supplementary measures are used, 3 adjustable cushion blocks are adjusted respectively, are made each adjustable
The madial wall of the first arc surface 32 and backing ring 6 of formula cushion block fits closely, and the lateral wall of the second arc surface 15 and rotating cylinder 5 is tight
Closely connected conjunction, and the concentricity of backing ring 6 and rotating cylinder 5 is reached the requirement of setting.
4) on this basis, will design need other adjustable cushion block deciles, be uniformly installed in place, and using welding or
Bolted mode is fixed.In this way, rotating cylinder 5 assembles in place with backing ring 6, possesses trial operation condition.
5) after actually going into operation, lime light examines the reliability that adjustable cushion block is connected with backing ring 6 and rotating cylinder 5, with
Ensure to keep good matching relationship between backing ring 6 and rotating cylinder 5, and in stable working status.
By practice test, adjustable cushion block plays in the assembling process of rotating cylinder 5 and backing ring 6 in the present embodiment
Important function, embodies as follows：
1) there is this adjustable cushion block of double cambered surfaces, had based on it continuously adjust, plane body lock, wedging power it is big, reliable
Property it is high the features such as, facilitate between backing ring 6 and rotating cylinder 5 dismounting and concentricity adjustment, carried for the assembling and maintenance of this rotary kiln
Great convenience is supplied.
2) solve the problems, such as that the concentricity adjustment between conventional backing ring 6 and rotating cylinder 5 is uneven, discontinuous, pass through
The thickness of multiple adjustable cushion blocks is adjusted respectively, it is possible to achieve backing ring 6 radially connects shifting relative to rotating cylinder 5
It is dynamic, and both concentricitys is reached sets requirement, so as to ensure the operation that rotary kiln can be stablized.
3) radial clearance solved between conventional rotating cylinder 5 and backing ring 6 is difficult to the problem thoroughly eliminated, by adjustable
Relative motion between formula pad sliding block 2 in the block and jacking block 3, completely eliminates to produce between rotating cylinder 5 and backing ring 6 and rocks
Gap, realizes both interference fits to a certain extent；Avoid and made between rotating cylinder 5 and backing ring 6 because of relative motion
Into mutual abrasion.
4) become the linear contact cooperation of conventional rotating cylinder 5 and backing ring 6, be engaged into face, add and match somebody with somebody between the two
Contact area is closed, ensure that the stability of rotary kiln running.
In conclusion the utility model effectively overcomes various shortcoming of the prior art and has high industrial exploitation value
Value.
The above embodiments are only illustrative of the principle and efficacy of the utility model, new not for this practicality is limited
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
God and all equivalent modifications completed under technological thought or change, should be covered by the claim of the utility model.
Claims (10)
- A kind of 1. adjustable cushion block, it is characterised in that：Including the base (1) with guide groove (11), in guide groove (11) Sliding block (2), jacking block (3) and adjusting bolt (4) in guide groove (11), the base (1) is equipped with through hole, institute Adjusting bolt (4) is stated through through hole and is threadedly coupled with sliding block (2), a surface of the sliding block (2) and the bottom of guide groove (11) Portion is in contact, and another surface of the sliding block (2) is equipped with active inclined-plane (21), and a surface of the jacking block (3) is equipped with quilt Dynamic inclined-plane (31), the passive inclined-plane (31) fit with active inclined-plane (21)；Rotate forward adjusting bolt (4), adjusting bolt (4) band movable slider (2) slides to the left, and the active inclined-plane (21) of sliding block (2) promotes passive inclined-plane (31) and jacking block (3) along guide groove (11) side wall and moved along the direction of the bottom away from guide groove (11)；Rotate backward adjusting bolt (4), adjusting bolt (4) Band movable slider (2) slide to the right, jacking block (3) along guide groove (11) side wall and along close to guide groove (11) bottom direction It is mobile.
- 2. adjustable cushion block according to claim 1, it is characterised in that：The base (1) includes bottom plate (12), positioned at bottom plate (12) right panel (14) of the left plate (13) of left end and right end positioned at bottom plate (12), the guide groove (11) are located at left plate (13) between right panel (14), the through hole is located in left plate (13).
- 3. adjustable cushion block according to claim 1, it is characterised in that：Another surface of the jacking block (3) is equipped with first Arc surface (32), the base (1) are equipped with the second arc surface (15) backwards to the surface of guide groove (11)；And first circle The central axis of cambered surface (32) and the central axis of the second arc surface (15) coincide.
- 4. adjustable cushion block according to claim 3, it is characterised in that：The radius of first arc surface (32) is more than second The radius of arc surface (15).
- 5. adjustable cushion block according to claim 3, it is characterised in that：The central axis and tune of first arc surface (32) The central axis for saving bolt (4) is parallel.
- 6. a kind of rotary kiln, including rotating cylinder (5) and the backing ring (6) that is set on rotating cylinder (5), it is characterised in that：Institute State backing ring (6) and pass through multiple adjustable cushion blocks as described in any one of claim 1 to 5 and rotating cylinder (5) tight fit.
- 7. rotary kiln according to claim 6, it is characterised in that：The base (1) backwards to guide groove (11) surface with The lateral wall of rotating cylinder (5) fits；Another surface of the jacking block (3) and the madial wall of backing ring (6) fit.
- 8. rotary kiln according to claim 6, it is characterised in that：Whole adjustable cushion blocks are equal along the circumferential direction of rotating cylinder (5) Even distribution.
- 9. rotary kiln according to claim 6, it is characterised in that：The central axis of the rotating cylinder (5) and backing ring (6) Central axis extends in left-right direction, the guide groove (11) in left-right direction on width be more than backing ring (6) along right and left Upward width.
- 10. rotary kiln according to claim 6, it is characterised in that：Further include support roller (7), the support roller (7) and backing ring (6) It is in rolling contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721071639.4U CN207335407U (en) | 2017-08-25 | 2017-08-25 | Adjustable cushion block and the rotary kiln with the adjustable cushion block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721071639.4U CN207335407U (en) | 2017-08-25 | 2017-08-25 | Adjustable cushion block and the rotary kiln with the adjustable cushion block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207335407U true CN207335407U (en) | 2018-05-08 |
Family
ID=62374380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721071639.4U Active CN207335407U (en) | 2017-08-25 | 2017-08-25 | Adjustable cushion block and the rotary kiln with the adjustable cushion block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207335407U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515104A (en) * | 2018-05-21 | 2018-09-11 | 杨光明 | Adjustable cushion block |
| CN109926783A (en) * | 2018-09-11 | 2019-06-25 | 万向钱潮股份有限公司 | It is a kind of it is controllable weld open grade size open link stopper and method |
| CN111672934A (en) * | 2020-07-24 | 2020-09-18 | 中国十七冶集团有限公司 | Device and method for gradually and finely adjusting roundness of lower edge of blast furnace shell |
-
2017
- 2017-08-25 CN CN201721071639.4U patent/CN207335407U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108515104A (en) * | 2018-05-21 | 2018-09-11 | 杨光明 | Adjustable cushion block |
| CN109926783A (en) * | 2018-09-11 | 2019-06-25 | 万向钱潮股份有限公司 | It is a kind of it is controllable weld open grade size open link stopper and method |
| CN111672934A (en) * | 2020-07-24 | 2020-09-18 | 中国十七冶集团有限公司 | Device and method for gradually and finely adjusting roundness of lower edge of blast furnace shell |
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