CN116605614A - High-power self-cooling type electric roller - Google Patents
High-power self-cooling type electric roller Download PDFInfo
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- CN116605614A CN116605614A CN202310569808.0A CN202310569808A CN116605614A CN 116605614 A CN116605614 A CN 116605614A CN 202310569808 A CN202310569808 A CN 202310569808A CN 116605614 A CN116605614 A CN 116605614A
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- 238000001816 cooling Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000003825 pressing Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 13
- 210000004907 gland Anatomy 0.000 claims description 15
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/02—Adaptations of individual rollers and supports therefor
- B65G39/07—Other adaptations of sleeves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The application relates to a high-power self-cooling type electric roller, which comprises a roller body and an electric roller body, wherein two cover plates are connected in a sliding manner in the roller body, an installation mechanism is arranged in the cover plates, a sleeve is connected in a sliding manner to the inner cavity wall of each cover plate, two pressing covers are attached to one opposite sides of the two sleeves, a limiting mechanism is arranged in each pressing cover, two bearing sleeves and two supports are sleeved on the outer surface of the electric roller body, two limiting blocks are fixed on the upper surface of each pressing cover at the lower end, two limiting grooves are formed in the lower surface of each pressing cover at the lower end, and each installation mechanism comprises two first cavities formed in the cover plates. This high-power self-cooled motorized pulley through the installation mechanism who sets up, slides the apron in the barrel, rotates first rotatory handle, drives first threaded rod and rotates, makes the movable block remove, promotes first fixture block card and goes into in the first draw-in groove, fixes barrel and apron, conveniently carries out quick assembly disassembly to the apron.
Description
Technical Field
The application relates to the technical field of motorized rollers, in particular to a high-power self-cooling motorized roller.
Background
The electric roller is a novel driving device which is used for jointly arranging a motor and a speed reducer in a roller body, is mainly applied to fixed and movable belt conveyors and replaces a traditional motor, and the speed reducer is a separate driving device outside the driving roller.
For example, chinese patent (publication No. CN 1053629C) discloses a self-cooling electric roller for a rubber belt conveyor, which adopts a combined design of a movable tooth transmission technology, and two sets of motor speed reducer units are parallelly arranged in a driving roller of the rubber belt conveyor to form an integral driving machine; the planetary transmission with small tooth difference features multiple tooth meshing, bearing capacity 7 times higher than that of gears with the same transmission ratio, single-stage transmission ratio up to 60, compact structure, small size, light weight, high transmission efficiency, strong overload capacity, convenient use, drum diameter of 630-1250 mm, driving power up to 150KW, etc. owing to the explosion-proof design, it may be used in various fields such as ground and underground.
The self-cooling type electric roller for the rubber belt conveyor has certain defects that two groups of identical motor-reducer devices are symmetrically and parallelly installed in the roller, so that the whole roller has compact structure, high bearing capacity, light weight and small size, and 110KW is taken as an example, each weight of the electric roller is less than 1.8T, and each set of weight of the original common driving device is 3.2T, compared with each steel material saving 1.4T, when the electric roller is installed or detached, other parts on a rotating shaft outside a sealing cavity are required to be removed firstly, an oil seal can be pushed to a preset oil seal installation position in the sealing cavity along one end of the shaft, or the oil seal can be removed in opposite steps and directions, so that the electric roller is time-consuming and labor-consuming, and other parts of equipment can be damaged when the oil seal is replaced, and the normal operation and production efficiency and quality of mechanical equipment are influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a high-power self-cooling type electric roller, which has the advantages of convenient disassembly and assembly and the like, and solves the problem of inconvenient disassembly and assembly of the existing high-power self-cooling type electric roller.
In order to achieve the above purpose, the present application provides the following technical solutions: the high-power self-cooling type electric roller comprises a roller body and an electric roller body, wherein two cover plates are connected in a sliding manner in the roller body, a mounting mechanism is arranged in each cover plate, a sleeve is connected in a sliding manner to the inner cavity wall of each cover plate, two pressing covers are attached to one opposite sides of each sleeve, a limiting mechanism is arranged in each pressing cover, two bearing sleeves and two supports are sleeved on the outer surface of the electric roller body, two limiting blocks are fixed on the upper surface of each pressing cover at the lower end, and two limiting grooves are formed in the lower surface of each pressing cover at the lower end;
the installation mechanism comprises two first cavities formed in the cover plates, the installation mechanism further comprises two first threaded holes formed in the back sides of the two cover plates, first threaded rods are connected with inner threads of the first threaded holes, moving blocks are connected to the opposite sides of the first threaded rods through bearing seats in a rotating mode, the upper side and the lower side of the moving blocks are respectively abutted to first clamping blocks, transverse plates are respectively fixed to the left side and the right side of the first clamping blocks, telescopic rods are respectively fixed to the opposite sides of the transverse plates, first springs are sleeved on the outer surfaces of the telescopic rods, and the installation mechanism further comprises a plurality of first clamping grooves formed in the upper side and the lower side of an inner cavity of the cylinder body.
Further, the first fixture block sliding connection is in the inside of first draw-in groove, left and right sides two the one side that the first threaded rod is opposite to each other is fixed with first rotatory handle.
Further, the upper side and the lower side of the movable block, which are opposite, are respectively fixed with a sliding plate, a sliding rod is fixed between the left side and the right side of the inner cavity of the first cavity, and the sliding plates are connected to the outer surfaces of the sliding rods in a sliding manner.
Further, the first clamping blocks and the moving blocks are trapezoidal, and the opposite sides of the upper telescopic rod and the lower telescopic rod are respectively fixed on the opposite sides of the inner cavities of the two first cavities.
Further, the opposite sides of the upper and lower two first springs are respectively fixed on the opposite sides of the inner cavities of the two first cavities, and the opposite sides of the upper and lower two first springs are respectively fixed on the opposite sides of the upper and lower two transverse plates.
Further, stop gear is including seting up in the inside second cavity of gland and seting up two second screw holes in two glands on one side that the back of the body is opposite, the inside threaded connection of second screw hole has the second threaded rod, upper and lower two the relative one side of second threaded rod all rotates through the bearing frame and is connected with the movable plate, upper and lower two the relative one side of movable plate all is fixed with a plurality of second fixture blocks, be fixed with two dead levers between the upper and lower both sides of second cavity inner chamber, the second spring has been cup jointed to the surface of dead lever, stop gear is still including seting up in the left through-hole of sleeve and seting up in the recess on one side that two apron is opposite, stop gear is still including seting up in the apron inside and a plurality of second draw-in grooves that are linked together with the recess.
Further, the upper side and the lower side of the second threaded rod are both fixed with a second rotary handle, and the second clamping block is slidably connected to the inside of the second clamping groove.
Further, the opposite sides of the upper and lower second springs are respectively fixed on the opposite sides of the inner cavities of the two second cavities, and the opposite sides of the upper and lower second springs are respectively fixed on the opposite sides of the upper and lower movable plates.
Further, stopper sliding connection is in the inside of spacing groove, upper and lower two the oil seal groove has all been seted up to the opposite one side of gland inner chamber.
Further, felt oil seals are sleeved on the outer surface of the electric roller body, and the felt oil seals are located in the oil seal grooves.
Compared with the prior art, the technical scheme of the application has the following beneficial effects:
1. this high-power self-cooled motorized pulley through the installation mechanism who sets up, slides the apron in the barrel, rotates first rotatory handle, drives first threaded rod and rotates, makes the movable block remove, promotes first fixture block card and goes into in the first draw-in groove, fixes barrel and apron, conveniently carries out quick assembly disassembly to the apron.
2. This high-power self-cooled motorized pulley inserts the apron with the sleeve in, with two gland looks butt, rotates the second rotatory handle, drives the rotation of second threaded rod, makes the movable plate slide at the surface of dead lever, drives the second fixture block card and go into in the second draw-in groove when the movable plate removes, fixes gland and sleeve, makes things convenient for the dismouting.
Drawings
FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is a left side schematic view of the motorized pulley body and the support of the present application;
FIG. 3 is a left side schematic view of the gland, stopper and stopper groove of the present application;
FIG. 4 is an enlarged schematic view of the structure of FIG. 1A according to the present application;
fig. 5 is an enlarged schematic view of the structure of fig. 1B according to the present application.
In the figure: the novel roller comprises a 1 cylinder body, a 2 electric roller body, a 3 cover plate, a 4 mounting mechanism, a 401 first cavity, a 402 first threaded hole, a 403 first threaded rod, a 404 moving block, a 405 first clamping block, a 406 first clamping groove, a 407 transverse plate, a 408 telescopic rod, a 409 first spring, a 5 limiting mechanism, a 501 second cavity, a 502 second threaded hole, a 503 second threaded rod, a 504 moving plate, a 505 fixed rod, a 506 second spring, a 507 through hole, a 508 groove, a 509 second clamping groove, a 510 second clamping block, a 6 gland, a 7 sleeve, an 8 bearing sleeve, a 9 support, a 10 limiting block and a 11 limiting groove.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1-3, a high-power self-cooling electric roller in this embodiment includes a roller body 1 and an electric roller body 2, wherein two cover plates 3 are slidably connected in the roller body 1 for sealing, a mounting mechanism 4 is provided in the cover plates 3 for mounting the cover plates 3, inner cavity walls of the cover plates 3 are slidably connected with sleeves 7, two covers 6 are attached to opposite sides of the two sleeves 7, a limit mechanism 5 is provided in the cover 6 for fixing the cover 6 and the sleeve 7 to the cover plates 3, two bearing sleeves 8 and two supports 9 are sleeved on the outer surface of the electric roller body 2, the outer surface of the bearing sleeves 8 are attached to the inner cavity walls of the cover plates 3, two limit blocks 10 are fixed on the upper surface of the lower end cover 6 through the supports 9, and two limit grooves 11 are provided on the lower surface of the lower end cover 6.
The limiting block 10 is slidably connected to the inside of the limiting groove 11, and is used for limiting the positions of the two pressing covers 6, oil seal grooves are formed in opposite sides of inner cavities of the upper pressing cover 6 and the lower pressing cover 6, felt oil seals are sleeved on the outer surface of the electric roller body 2, and are located in the oil seal grooves, so that the tightness is improved.
Referring to fig. 4, in order to install the cover plate 3, the installation mechanism 4 in this embodiment includes two first cavities 401 opened in the cover plate 3, the installation mechanism 4 further includes two first threaded holes 402 opened in opposite sides of the two cover plates 3, the first threaded holes 402 are internally threaded with first threaded rods 403, opposite sides of the left and right first threaded rods 403 are respectively connected with moving blocks 404 through bearing seats in a rotating manner, the moving blocks 404 are driven to move through the first threaded rods 403, opposite sides of the upper and lower moving blocks 404 are respectively abutted with first clamping blocks 405, the first clamping blocks 405 and the moving blocks 404 are respectively trapezoid, the moving blocks 404 are pushed to move, the first clamping blocks 405 are respectively fixed with transverse plates 407 on the left and right sides of the first clamping blocks 405, telescopic rods 408 are respectively fixed on opposite sides of the inner cavities of the two first cavities 401, first springs 409 are sleeved on the outer surfaces of the telescopic rods 408, the first springs 409 are made to make the first springs 409 move in a straight line through the first clamping blocks 405, and the first clamping blocks 405 are further compressed by the first clamping blocks 405, and the first clamping blocks 4 are further installed on the two sides of the cylinder body, and the cylinder body is provided with multiple first clamping blocks 405.
The first clamping block 405 is slidably connected to the inside of the first clamping groove 406, and is used for fixing the cover plate 3 to the inside of the cylinder 1, and the opposite sides of the left and right two first threaded rods 403 are respectively fixed with a first rotating handle, so that the first threaded rods 403 are convenient to rotate.
In addition, the sliding plates are fixed on the opposite sides of the upper moving block 404 and the lower moving block 404, a sliding rod is fixed between the left side and the right side of the inner cavity of the first cavity 401, the sliding plates are slidably connected to the outer surfaces of the sliding rods, stability of the moving blocks 404 during moving is improved, the moving blocks 404 are prevented from rotating along with the first threaded rod 403, a baffle is fixed on the inner cavity wall of the cylinder body 1, and the cover plate 3 is attached to the baffle for limiting the position of the cover plate 3.
The opposite sides of the upper and lower first springs 409 are respectively fixed to the opposite sides of the inner cavities of the two first cavities 401, and the opposite sides of the upper and lower first springs 409 are respectively fixed to the opposite sides of the upper and lower transverse plates 407, so as to reset the first clamping blocks 405 and enable the first clamping blocks 405 to be far away from the first clamping grooves 406.
The mounting mechanism 4 in this embodiment slides the cover plate 3 into the cylinder 1, rotates the first rotating handle, drives the first threaded rod 403 to rotate, moves the moving block 404, pushes the first clamping block 405 to clamp into the first clamping groove 406, and fixes the cylinder 1 and the cover plate 3.
Referring to fig. 5, in order to install the gland 6 and the sleeve 7, the limiting mechanism 5 in this embodiment includes a second cavity 501 formed in the gland 6 and two second threaded holes 502 formed on opposite sides of the upper and lower two glands 6, the second threaded holes 502 are internally threaded with second threaded rods 503, opposite sides of the upper and lower two second threaded rods 503 are respectively connected with a moving plate 504 through bearing seats, the moving plates 504 are driven to move by rotating the second threaded rods 503 in the second threaded holes 502, a plurality of second clamping blocks 510 are respectively fixed on opposite sides of the upper and lower two moving plates 504, two fixing rods 505 are fixed between upper and lower sides of an inner cavity of the second cavity 501, the moving plates 504 are slidably connected to outer surfaces of the two fixing rods 505, stability of the moving plates 504 during movement is increased, second springs 506 are sleeved on the outer surfaces of the fixing rods 505, the limiting mechanism 5 further includes through holes 507 formed on left sides of the sleeve 7 and grooves 508 formed on opposite sides of the two cover plates 3, and the limiting mechanism 5 further includes a plurality of second clamping grooves 509 formed in the inner sides of the cover plates 3 and communicated with the grooves 508.
The upper and lower sides of the two opposite second threaded rods 503 are respectively fixed with a second rotating handle, so that the second threaded rods 503 are conveniently rotated, and the second clamping blocks 510 are slidably connected to the inside of the second clamping grooves 509 and are used for fixing the gland 6 and the sleeve 7.
In addition, the opposite sides of the upper and lower second springs 506 are respectively fixed to the opposite sides of the inner cavities of the two second cavities 501, and the opposite sides of the upper and lower second springs 506 are respectively fixed to the opposite sides of the upper and lower moving plates 504, so as to provide stability for the movement of the moving plates 504.
In the limiting mechanism 5 in this embodiment, the sleeve 7 is inserted into the cover plate 3, the two pressing covers 6 are abutted, the second rotary handle is rotated to drive the second threaded rod 503 to rotate, the moving plate 504 slides on the outer surface of the fixed rod 505, and the moving plate 504 drives the second clamping block 510 to be clamped into the second clamping groove 509 when moving, so as to fix the pressing cover 6 and the sleeve 7.
The working principle of the embodiment is as follows:
(1) After the cover plate 3 slides into the barrel 1, the cover plate 3 is abutted with the baffle plate, the first rotary handle is rotated, the first rotary handle drives the first threaded rod 403 to rotate in the first threaded hole 402, when the first threaded rod 403 rotates, the moving block 404 is driven to move, the moving block 404 can drive the sliding plate to slide on the outer surface of the sliding rod when moving, the stability of the moving block 404 when moving is improved, when the moving block 404 moves, the first clamping block 405 is pushed to be clamped into the first clamping groove 406 to fix the barrel 1 and the cover plate 3, and when the first clamping block 405 moves, the transverse plate 407 is driven to move together, and the telescopic rod 408 and the first spring 409 are extruded through the transverse plate 407.
(2) After the sleeve 7 is inserted into the cover plate 3, the two pressing covers 6 are abutted to enable the limiting block 10 to be clamped into the limiting groove 11, at the moment, the second rotary handle is rotated to drive the second threaded rod 503 to rotate in the second threaded hole 502, the second threaded rod 503 rotates to drive the movable plate 504 to slide on the outer surface of the fixed rod 505 and enable the second spring 506 to reset, the stability of movement of the movable plate 504 is improved through the second spring 506, and when the movable plate 504 moves, the second clamping block 510 is driven to be clamped into the second clamping groove 509 to fix the pressing cover 6 and the sleeve 7.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a high-power self-cooled motorized pulley, includes barrel (1) and motorized pulley body (2), its characterized in that: the novel electric cylinder is characterized in that two cover plates (3) are connected inside the cylinder body (1) in a sliding manner, an installing mechanism (4) is arranged inside the cover plates (3), a sleeve (7) is connected to the inner cavity wall of each cover plate (3) in a sliding manner, two pressing covers (6) are attached to one sides of the sleeves (7) opposite to each other, a limiting mechanism (5) is arranged inside each pressing cover (6), two bearing sleeves (8) and two supporting seats (9) are sleeved on the outer surface of the electric cylinder body (2), two limiting blocks (10) are fixed on the upper surface of each pressing cover (6) at the lower end, and two limiting grooves (11) are formed in the lower surface of each pressing cover (6);
the installation mechanism (4) comprises two first cavities (401) formed in the cover plates (3), the installation mechanism (4) further comprises two first threaded holes (402) formed in the opposite sides of the two cover plates (3), first threaded rods (403) are connected to the inner threads of the first threaded holes (402), moving blocks (404) are rotatably connected to the opposite sides of the first threaded rods (403) through bearing seats, first clamping blocks (405) are abutted to the opposite sides of the moving blocks (404), transverse plates (407) are fixed to the left side and the right side of the first clamping blocks (405), telescopic rods (408) are fixed to the opposite sides of the transverse plates (407), first springs (409) are sleeved on the outer surfaces of the telescopic rods (408), and the installation mechanism (4) further comprises a plurality of first clamping grooves (406) formed in the upper side and the lower side of the inner cavity of the cylinder (1).
2. A high power self-cooling motorized pulley as in claim 1, wherein: the first clamping block (405) is slidably connected to the inside of the first clamping groove (406), and the left side and the right side of the two first threaded rods (403) are respectively fixed with a first rotary handle.
3. A high power self-cooling motorized pulley as in claim 1, wherein: slide plates are fixed on the opposite sides of the upper moving block (404) and the lower moving block, a slide rod is fixed between the left side and the right side of the inner cavity of the first cavity (401), and the slide plates are connected to the outer surfaces of the slide rods in a sliding mode.
4. A high power self-cooling motorized pulley as in claim 1, wherein: the first clamping blocks (405) and the moving blocks (404) are trapezoidal, and the opposite sides of the upper telescopic rods (408) and the lower telescopic rods (408) are respectively fixed on the opposite sides of the inner cavities of the two first cavities (401).
5. A high power self-cooling motorized pulley as in claim 1, wherein: the upper and lower sides of the first springs (409) are respectively fixed on the opposite sides of the inner cavities of the two first cavities (401), and the opposite sides of the upper and lower springs (409) are respectively fixed on the opposite sides of the upper and lower transverse plates (407).
6. A high power self-cooling motorized pulley as in claim 1, wherein: stop gear (5) are including seting up in the inside second cavity (501) of gland (6) and seting up two second screw holes (502) of two gland (6) opposite sides about, the inside threaded connection of second screw hole (502) has second threaded rod (503), upper and lower two the opposite one side of second threaded rod (503) all rotates through the bearing frame and is connected with movable plate (504), upper and lower two the opposite one side of movable plate (504) all is fixed with a plurality of second fixture blocks (510), be fixed with two dead levers (505) between the upper and lower both sides of second cavity (501) inner chamber, second spring (506) have been cup jointed to the surface of dead lever (505), stop gear (5) still including set up through-hole (507) in sleeve (7) left side and set up in recess (508) of two apron (3) opposite sides, stop gear (5) still including set up in apron (3) inside and with recess (508) a plurality of second draw-in grooves (509) that are linked together.
7. The high power self-cooling motorized pulley as set forth in claim 6, wherein: and the upper side and the lower side of the second threaded rod (503) are respectively fixed with a second rotary handle, and the second clamping block (510) is connected in the second clamping groove (509) in a sliding way.
8. The high power self-cooling motorized pulley as set forth in claim 6, wherein: the upper and lower sides of the second springs (506) opposite to each other are respectively fixed on the sides of the inner cavities of the two second cavities (501) opposite to each other, and the sides of the upper and lower second springs (506) opposite to each other are respectively fixed on the sides of the upper and lower movable plates (504) opposite to each other.
9. A high power self-cooling motorized pulley as in claim 1, wherein: the limiting block (10) is connected with the inside of the limiting groove (11) in a sliding mode, and oil seal grooves are formed in the opposite sides of the inner cavities of the upper gland (6) and the lower gland.
10. A high power self-cooling motorized pulley as set forth in claim 9, wherein: the outer surface of the electric roller body (2) is sleeved with a felt ring oil seal, and the felt ring oil seal is positioned in the oil seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310569808.0A CN116605614A (en) | 2023-05-19 | 2023-05-19 | High-power self-cooling type electric roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310569808.0A CN116605614A (en) | 2023-05-19 | 2023-05-19 | High-power self-cooling type electric roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116605614A true CN116605614A (en) | 2023-08-18 |
Family
ID=87675995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310569808.0A Pending CN116605614A (en) | 2023-05-19 | 2023-05-19 | High-power self-cooling type electric roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116605614A (en) |
-
2023
- 2023-05-19 CN CN202310569808.0A patent/CN116605614A/en active Pending
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