CN113649121A - Novel synchronous gap adjusting structure - Google Patents
Novel synchronous gap adjusting structure Download PDFInfo
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- CN113649121A CN113649121A CN202111062201.0A CN202111062201A CN113649121A CN 113649121 A CN113649121 A CN 113649121A CN 202111062201 A CN202111062201 A CN 202111062201A CN 113649121 A CN113649121 A CN 113649121A
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- gap adjusting
- adjusting seat
- shaft
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- hollow shaft
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 37
- 125000006850 spacer group Chemical group 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention belongs to the technical field of crushers, and particularly relates to a novel synchronous gap adjusting structure which comprises a driving motor, an encoder and two groups of gap adjusting seat devices, wherein each gap adjusting seat device comprises a hollow shaft and a traction shaft, a limiting part, a gap adjusting seat block and a baffle are sequentially arranged along the axial direction of the traction shaft, the baffles are fixedly arranged, the gap adjusting seat blocks and the traction shafts are arranged in a sliding mode and penetrate through the baffles, one end, penetrating through the baffle in the sliding mode, of the traction shaft is in threaded connection with the hollow shaft, the output end of the driving motor is in transmission connection with the hollow shafts of the two groups of gap adjusting seat devices respectively, bearings are arranged on the hollow shafts, the traction shafts of the two groups of gap adjusting seat devices are arranged in parallel, and the encoder is in transmission connection with the hollow shafts of one group of gap adjusting seat devices.
Description
Technical Field
The invention belongs to the technical field of crushers, and particularly relates to a novel synchronous gap adjusting structure.
Background
Crushing is an important link in feed processing, the quality of feed is directly influenced by the crushing effect, and a crusher is a common crushing device. In the feed production process, materials pass through the crusher between two rollers, and the two rollers roll and crush the materials mutually. When different finished product fodder of production, need adjust the clearance between two rollers, current clearance through between two rollers of manual regulation, the ubiquitous is when removing a roller, and the displacement at roller both ends is inconsistent, leads to the inconsistent at clearance both ends between two rollers, influences the fodder quality, and clearance between two rollers of manual regulation, and it is higher to staff technical skill requirement, and the operation is complicated, reduces production efficiency and enterprise competitiveness.
Disclosure of Invention
In order to solve the problems that the gap between two rollers is manually adjusted, the two ends of the gap are inconsistent and the adjusting efficiency is low in the prior art, the invention provides a novel synchronous gap adjusting structure.
In order to solve the technical problems, the technical scheme adopted by the invention is that the novel synchronous gap adjusting structure comprises a driving motor, an encoder and two groups of gap adjusting seat devices, wherein each gap adjusting seat device comprises a hollow shaft and a traction shaft, a limiting piece, a gap adjusting seat block and a baffle are sequentially arranged along the axial direction of the traction shaft, the baffles are fixedly arranged, the gap adjusting seat blocks and the traction shaft are arranged in a sliding mode and penetrate through the baffles, one end of the traction shaft, which penetrates through the baffle in a sliding mode, is in threaded connection with the hollow shaft, the output end of the driving motor is in transmission connection with the hollow shafts of the two groups of gap adjusting seat devices respectively, bearings are arranged on the hollow shafts, the traction shafts of the two groups of gap adjusting seat devices are arranged in parallel, and the encoder is in transmission connection with the hollow shaft of one group of the gap adjusting seat devices.
Preferably, a cavity is formed in the gap adjusting seat block, a high-pressure spring is arranged in the cavity, the high-pressure spring is sleeved on the traction shaft, two ends of the high-pressure spring are respectively in contact with the gap adjusting seat block and the baffle, a nut used for limiting the baffle is arranged on the traction shaft, and the baffle is located between the high-pressure spring and the nut. When the gap adjusting seat block moves towards the baffle and is stressed, the high-pressure spring is stressed to play a role in buffering protection and realize the compression and avoidance of the overload high-pressure spring; the position of the stop plate is limited by moving the position of the nut, so that the pretightening force of the high-pressure spring is adjusted.
Preferably, the output end of the driving motor is in transmission connection with the hollow shaft through a first transmission part, the first transmission part comprises a gap adjusting chain wheel and a driving chain wheel, the gap adjusting chain wheel is fixedly arranged on the hollow shaft, the driving chain wheel is fixedly arranged at the output end of the driving motor, and the driving chain wheel is in transmission connection with the gap adjusting chain wheels of the two groups of gap adjusting seat devices through driving chains respectively. The driving motor and hollow shaft transmission connecting structure is simple and reliable, high in transmission precision and low in cost.
Preferably, both sides of the driving sprocket are provided with tension sprockets engaged with the driving chain. The transmission reliability and the transmission precision of the first transmission piece are improved.
Preferably, the hollow shaft and the gap adjusting chain wheel are respectively provided with a shaft shoulder, the bearing is positioned between the shaft shoulders of the hollow shaft and the gap adjusting chain wheel, and two sides of the outer ring of the bearing are provided with a check ring and a connecting seat. The bearing has simple and reliable mounting structure, compact layout and convenient assembly.
Preferably, the gap adjusting seat device further comprises a connecting plate and a stop ring, and the baffle plate, the bearing, the gap adjusting chain wheel, the connecting plate and the stop ring are sequentially arranged. The installation structure of the gap adjusting chain wheel is simple and reliable, the layout is compact, and the assembly is convenient.
Preferably, the encoder is in transmission connection with the hollow shaft through a second transmission part, the second transmission part comprises a coding chain wheel, the coding chain wheel is fixedly arranged at the input end of the encoder, and the coding chain wheel is in transmission connection with the gap adjusting chain wheel through a coding chain. The transmission connecting structure of the encoder and the hollow shaft is simple and reliable, high in transmission precision and low in cost.
Further, this novel synchronous clearance adjustment structure still includes fixed cross beam, connecting seat and encoder are all fixed to be set up on the crossbeam. The fixed cross beam selects channel steel for use, so that the novel synchronous gap adjusting structure is convenient to integrally mount.
Furthermore, the gap adjusting seat device also comprises a dustproof spacer sleeve and a dustproof cover, the dustproof spacer sleeve is sleeved on the periphery of the baffle plate and is positioned between the baffle plate and the connecting seat, and the dustproof spacer sleeve is fixedly connected with the connecting seat; the dust cover is sleeved at one end of the traction shaft close to the hollow shaft. Effectively prevent this novel synchronous clearance structure of transferring by dust pollution, improve this novel synchronous clearance structure's life.
Furthermore, the limiting part is a limiting nut, a set screw is arranged between the limiting nut and the traction shaft, and anaerobic adhesive is coated between the limiting nut and the traction shaft. The set screw effectively locks the limit nut, the limit nut is prevented from rotating and moving, and the anaerobic adhesive further prevents the limit nut from loosening.
Has the advantages that: according to the novel synchronous gap adjusting structure, the hollow shafts of the two groups of gap adjusting seat devices are driven to rotate by one driving motor simultaneously, the gap value between the two rollers is accurately monitored by the encoder, and the gap adjusting seat blocks of the two groups of gap adjusting seat devices are fixedly connected with bearing seats at two ends of one roller of the crusher respectively, so that the two ends of the gap are ensured to be adjusted consistently, full-automatic adjustment is realized, the adjustment is convenient, the adjustment efficiency is high, the adjustment precision is high, and a series of problems that the gap adjustment at two ends of the roller is inconvenient, the operation difficulty is high and the two ends of the gap are difficult to ensure consistent due to the compact factor of the space arrangement of the crusher are solved; when the gap adjusting seat block moves towards the baffle and is stressed, the high-pressure spring is stressed, so that the buffer protection effect is achieved, and the overload high-pressure spring is compressed and avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic perspective view of the novel synchronous gap-adjusting structure of the present invention;
FIG. 2 is a schematic view of another angle of the novel synchronous gap-adjusting structure of the present invention, wherein the driving motor is not shown;
FIG. 3 is a schematic top view of the novel synchronous shim structure of the present invention;
FIG. 4 is a schematic side view of the new type of gap-adjusting seat device with a synchronous gap-adjusting structure according to the present invention;
FIG. 5 is a schematic cross-sectional view of a gap adjusting seat device of the novel synchronous gap adjusting structure of the present invention;
in the figure: 1. the anti-backlash mechanism comprises a driving motor, 2, an encoder, 3, a backlash adjusting seat device, 3-1, a hollow shaft, 3-2, a traction shaft, 3-3, a limit nut, 3-4, a backlash adjusting seat block, 3-5, a baffle, 3-6, a high-pressure spring, 3-7, a retainer ring, 3-8, a connecting seat, 3-9, a connecting plate, 3-10, a stop ring, 3-11, a dustproof spacer sleeve, 3-12, a dustproof cover, 3-13, a set screw, 3-14, a bearing, 4, a backlash adjusting chain wheel, 5, a driving chain wheel, 6, a driving chain, 7, a tensioning chain wheel, 8, a coding chain wheel, 9, a coding chain, 10 and a cross beam.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in figures 1-5, a novel synchronous gap adjusting structure comprises a driving motor 1, an encoder 2 and two groups of gap adjusting seat devices 3, wherein each gap adjusting seat device 3 comprises a hollow shaft 3-1 and a traction shaft 3-2, a limiting part, a gap adjusting seat block 3-4 and a baffle 3-5 are sequentially arranged along the axial direction of the traction shaft 3-2, the baffle 3-5 is fixedly arranged, the gap adjusting seat block 3-4 and the traction shaft 3-2 are both arranged in a sliding mode through the baffle 3-5, one end, sliding through the baffle 3-5, of the traction shaft 3-2 is in threaded connection with the hollow shaft 3-1, the output end of the driving motor 1 is in transmission connection with the hollow shaft 3-1 of each group of gap adjusting seat devices 3, a bearing 3-14 is arranged on the hollow shaft 3-1, the traction shafts 3-2 of the two groups of gap adjusting seat devices 3 are arranged in parallel, and the encoder 2 is in transmission connection with the hollow shaft 3-1 of one group of gap adjusting seat devices 3.
Specifically, in the embodiment, a cavity is formed in the gap adjusting seat block 3-4, a high-pressure spring 3-6 is arranged in the cavity, the high-pressure spring 3-6 is sleeved on the traction shaft 3-2, two ends of the high-pressure spring 3-6 are respectively contacted with the gap adjusting seat block 3-4 and the baffle 3-5, and when the gap adjusting seat block 3-4 moves towards the baffle 3-5 and is stressed, the high-pressure spring 3-6 is pressed, so that a buffer protection effect is achieved, and the overload high-pressure spring 3-6 is compressed and avoided; the traction shaft 3-2 is provided with a nut for limiting the baffle 3-5, the baffle 3-5 is positioned between the high-pressure spring 3-6 and the nut, and the position of the baffle is limited by moving the position of the nut, so that the pretightening force of the high-pressure spring is adjusted.
Specifically, in this embodiment, the output end of the driving motor 1 is in transmission connection with the hollow shaft 3-1 through a first transmission member, the first transmission member includes a gap adjusting sprocket 4 and a driving sprocket 5, the gap adjusting sprocket 4 is fixedly arranged on the hollow shaft 3-1, the driving sprocket 5 is fixedly arranged at the output end of the driving motor 1, and the driving sprocket 5 is in transmission connection with the gap adjusting sprockets 4 of the two groups of gap adjusting seat devices 3 through a driving chain 6; and tensioning sprockets 7 meshed with the driving chain 6 are arranged on two sides of the driving sprocket 5.
Specifically, in this embodiment, the encoder 2 is in transmission connection with the hollow shaft 3-1 through a second transmission member, the second transmission member includes a coding sprocket 8, the coding sprocket 8 is fixedly arranged at the input end of the encoder 2, and the coding sprocket 8 is in transmission connection with the gap adjusting sprocket 4 through a coding chain 9.
Specifically, in the embodiment, the hollow shaft 3-1 and the gap adjusting chain wheel 4 are both provided with shaft shoulders, the bearings 3-14 are positioned between the shaft shoulders of the hollow shaft 3-1 and the gap adjusting chain wheel 4, and two sides of the outer ring of the bearings 3-14 are provided with check rings 3-7 and connecting seats 3-8; the gap adjusting seat device 3 further comprises a connecting plate 3-9 and a stop ring 3-10, and the baffle plate 3-5, the bearing 3-14, the gap adjusting chain wheel 4, the connecting plate 3-9 and the stop ring 3-10 are sequentially arranged. The installation structure of the gap adjusting chain wheel 4 is simple and reliable, the layout is compact, and the assembly is convenient.
Specifically, in this embodiment, the gap adjusting seat device 3 further includes a dustproof spacer 3-11 and a dustproof cover 3-12, the dustproof spacer 3-11 is sleeved on the periphery of the baffle 3-5, the dustproof spacer 3-11 is located between the baffle 3-5 and the connecting seat 3-8, and the dustproof spacer 3-11 is fixedly connected with the connecting seat 3-8; the dust cover 3-12 is sleeved at one end of the traction shaft 3-2 close to the hollow shaft 3-1.
Specifically, in this embodiment, the limiting member is a limiting nut 3-3, a set screw 3-13 is disposed between the limiting nut 3-3 and the traction shaft 3-2, anaerobic adhesive is coated between the limiting nut 3-3 and the traction shaft 3-2, the set screw 3-13 effectively locks the limiting nut 3-3, the limiting nut 3-3 is prevented from rotating and moving, and the anaerobic adhesive further prevents the limiting nut 3-3 from loosening.
Specifically, in this embodiment, the novel synchronous gap adjusting structure further includes a fixed cross beam 10, the fixed cross beam 10 is a channel steel, and the dustproof spacer 3-11, the connecting seat 3-8 and the encoder 2 are all fixedly disposed on the cross beam 10, so as to facilitate the integral installation of the novel synchronous gap adjusting structure.
And gap adjusting seat blocks 3-4 of the two groups of gap adjusting seat devices 3 are respectively and fixedly connected with bearing seats at two ends of one roller of the existing crusher, and the traction shafts 3-2 are respectively vertical to the roller and the roller gap.
The adjusting process of the novel synchronous gap adjusting structure is as follows:
firstly, a driving motor 1 sequentially drives a driving chain wheel 5, a driving chain 6, a gap adjusting chain wheel 4 and a hollow shaft 3-1 to rotate, meanwhile, a coding chain 9 transmits a rotation signal of the hollow shaft 3-1 to an encoder 2, the hollow shaft 3-1 rotationally drives a traction shaft 3-2 to move close to or far away from a roller of a crusher, the traction shaft 3-2 further drives a gap adjusting seat block 3-4 to move close to or far away from the roller of the crusher, the gap adjusting seat block 3-4 further drives the roller of the crusher to move, so that the adjustment of a gap between two rollers of the crusher is realized, when the encoder 2 monitors that the rotation amount of the hollow shaft 3-1 reaches a set value, namely the gap between the two rollers reaches the set value, the driving motor 1 stops, and the adjustment of the gap between the two rollers of the crusher is completed. Wherein, one driving motor 1 simultaneously drives the hollow shafts 3-1 of the two groups of gap adjusting seat devices 3 to rotate, the encoder 2 accurately monitors the gap value between the two rollers, and the gap adjusting seat blocks 3-4 of the two groups of gap adjusting seat devices 3 are respectively and fixedly connected with bearing seats at two ends of one roller of the crusher, thereby ensuring the consistent adjustment of the two ends of the gap; when the gap adjusting seat block 3-4 moves towards the baffle 3-5 and is stressed, the high-pressure spring 3-6 is stressed to play a role in buffering protection and realize compression avoidance of the overload high-pressure spring 3-6.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (10)
1. A novel synchronous gap adjusting structure is characterized in that: the gap adjusting device comprises a driving motor (1), an encoder (2) and two groups of gap adjusting seat devices (3), wherein each gap adjusting seat device (3) comprises a hollow shaft (3-1) and a traction shaft (3-2), a limiting piece, a gap adjusting seat block (3-4) and a baffle (3-5) are sequentially arranged along the axial direction of the traction shaft (3-2), the baffle (3-5) is fixedly arranged, the gap adjusting seat block (3-4) and the traction shaft (3-2) are arranged in a sliding mode through the baffle (3-5), one end, sliding through the baffle (3-5), of the traction shaft (3-2) is in threaded connection with the hollow shaft (3-1), the output end of the driving motor (1) is in transmission connection with the hollow shafts (3-1) of the two groups of gap adjusting seat devices (3), and bearings (3-14) are arranged on the hollow shaft (3-1), traction shafts (3-2) of the two groups of gap adjusting seat devices (3) are arranged in parallel, and the encoder (2) is in transmission connection with a hollow shaft (3-1) of one group of gap adjusting seat devices (3).
2. The novel synchronous shim structure of claim 1, wherein: a cavity is formed in the gap adjusting seat block (3-4), a high-pressure spring (3-6) is arranged in the cavity, the high-pressure spring (3-6) is sleeved on the traction shaft (3-2), two ends of the high-pressure spring (3-6) are respectively in contact with the gap adjusting seat block (3-4) and a baffle (3-5), a nut used for limiting the baffle (3-5) is arranged on the traction shaft (3-2), and the baffle (3-5) is located between the high-pressure spring (3-6) and the nut.
3. The novel synchronous shim structure of claim 1 or 2, wherein: the output end of the driving motor (1) is in transmission connection with the hollow shaft (3-1) through a first transmission piece, the first transmission piece comprises a gap adjusting chain wheel (4) and a driving chain wheel (5), the gap adjusting chain wheel (4) is fixedly arranged on the hollow shaft (3-1), the driving chain wheel (5) is fixedly arranged at the output end of the driving motor (1), and the driving chain wheel (5) is in transmission connection with the gap adjusting chain wheels (4) of the two groups of gap adjusting seat devices (3) through a driving chain (6).
4. The novel synchronous shim structure of claim 3, wherein: and tensioning sprockets (7) meshed with the driving chain (6) are arranged on two sides of the driving sprocket (5).
5. The novel synchronous shim structure of claim 3, wherein: the hollow shaft (3-1) and the gap adjusting chain wheel (4) are respectively provided with a shaft shoulder, the bearing (3-14) is positioned between the shaft shoulders of the hollow shaft (3-1) and the gap adjusting chain wheel (4), and two sides of the outer ring of the bearing (3-14) are provided with a check ring (3-7) and a connecting seat (3-8).
6. The novel synchronous shim structure of claim 5, wherein: the gap adjusting seat device (3) further comprises a connecting plate (3-9) and a stop ring (3-10), and the baffle plate (3-5), the bearing (3-14), the gap adjusting chain wheel (4), the connecting plate (3-9) and the stop ring (3-10) are sequentially arranged.
7. The novel synchronous shim structure of claim 3, wherein: encoder (2) are connected with hollow shaft (3-1) transmission through the second driving medium, the second driving medium includes encoding sprocket (8), encoding sprocket (8) are fixed to be set up the input in encoder (2), encoding sprocket (8) are connected with accent crack sprocket (4) transmission through encoding chain (9).
8. The novel synchronous shim structure of claim 5, wherein: the novel synchronous gap adjusting structure further comprises a fixed cross beam (10), and the connecting seats (3-8) and the encoder (2) are fixedly arranged on the cross beam (10).
9. The novel synchronous shim structure of claim 5, wherein: the gap adjusting seat device (3) further comprises a dustproof spacer sleeve (3-11) and a dustproof cover (3-12), the dustproof spacer sleeve (3-11) is sleeved on the periphery of the baffle (3-5), the dustproof spacer sleeve (3-11) is located between the baffle (3-5) and the connecting seat (3-8), and the dustproof spacer sleeve (3-11) is fixedly connected with the connecting seat (3-8); the dust cover (3-12) is sleeved at one end of the traction shaft (3-2) close to the hollow shaft (3-1).
10. The novel synchronous shim structure of claim 1, wherein: the limiting part is a limiting nut (3-3), a set screw (3-13) is arranged between the limiting nut (3-3) and the traction shaft (3-2), and anaerobic adhesive is coated between the limiting nut (3-3) and the traction shaft (3-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111062201.0A CN113649121A (en) | 2021-09-10 | 2021-09-10 | Novel synchronous gap adjusting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111062201.0A CN113649121A (en) | 2021-09-10 | 2021-09-10 | Novel synchronous gap adjusting structure |
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| CN113649121A true CN113649121A (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111062201.0A Pending CN113649121A (en) | 2021-09-10 | 2021-09-10 | Novel synchronous gap adjusting structure |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028461A (en) * | 2012-12-25 | 2013-04-10 | 太重煤机有限公司 | Double-geared roller strong graded crusher capable of adjusting and controlling particle size continuously |
| CN208928274U (en) * | 2018-10-11 | 2019-06-04 | 福建铁拓机械有限公司 | A kind of double-roll crusher and its electric performance device |
| CN111940024A (en) * | 2020-08-31 | 2020-11-17 | 湖南湘德夏工机械设备制造有限公司 | Single-power double-roller crusher |
| CN216093970U (en) * | 2021-09-10 | 2022-03-22 | 江苏正昌粮机股份有限公司 | Novel synchronous gap adjusting structure |
-
2021
- 2021-09-10 CN CN202111062201.0A patent/CN113649121A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028461A (en) * | 2012-12-25 | 2013-04-10 | 太重煤机有限公司 | Double-geared roller strong graded crusher capable of adjusting and controlling particle size continuously |
| CN208928274U (en) * | 2018-10-11 | 2019-06-04 | 福建铁拓机械有限公司 | A kind of double-roll crusher and its electric performance device |
| CN111940024A (en) * | 2020-08-31 | 2020-11-17 | 湖南湘德夏工机械设备制造有限公司 | Single-power double-roller crusher |
| CN216093970U (en) * | 2021-09-10 | 2022-03-22 | 江苏正昌粮机股份有限公司 | Novel synchronous gap adjusting structure |
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