CN219702863U - Ball curtain cleaning device of ball curtain cinema of recreation ground - Google Patents

Ball curtain cleaning device of ball curtain cinema of recreation ground Download PDF

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Publication number
CN219702863U
CN219702863U CN202320264573.XU CN202320264573U CN219702863U CN 219702863 U CN219702863 U CN 219702863U CN 202320264573 U CN202320264573 U CN 202320264573U CN 219702863 U CN219702863 U CN 219702863U
Authority
CN
China
Prior art keywords
sleeve
ball curtain
rotating plate
cleaning device
chassis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN202320264573.XU
Other languages
Chinese (zh)
Inventor
李灿光
卜佳
李景钊
黄颂
李坚
李涛
黄俊华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen OCT Vision Inc
Original Assignee
Shenzhen OCT Vision Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen OCT Vision Inc filed Critical Shenzhen OCT Vision Inc
Priority to CN202320264573.XU priority Critical patent/CN219702863U/en
Application granted granted Critical
Publication of CN219702863U publication Critical patent/CN219702863U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

本实用新型提出一种游乐场球幕影院的球幕清扫装置,包括推车、底盘、旋转板、套筒、电动伸缩缸和吸尘器,其中,底盘设置于所述推车上,旋转板可旋转的设置于所述底盘,套筒设置于所述旋转板的一侧,且与所述旋转板铰接,电动伸缩缸设置于所述旋转板的另一侧,电动伸缩缸一端与所述旋转板铰接,另一端与所述套筒铰接,以使所述套筒可沿着水平方向向前或向后旋转,吸尘器设置于所述推车上,吸尘器设置吸尘软管,所述吸尘软管固定在所述套筒。本实用新型能够适应不同高度、不同方位以及不同位置的球幕清扫,结构简单,使用方便,清扫效率高。

The utility model proposes a dome cleaning device for amusement park dome theaters, which includes a cart, a chassis, a rotating plate, a sleeve, an electric telescopic cylinder and a vacuum cleaner. The chassis is arranged on the cart and the rotating plate can rotate. is arranged on the chassis, a sleeve is arranged on one side of the rotating plate, and is hingedly connected with the rotating plate, an electric telescopic cylinder is arranged on the other side of the rotating plate, and one end of the electric telescopic cylinder is connected to the rotating plate Hinged, the other end is hinged with the sleeve so that the sleeve can rotate forward or backward along the horizontal direction. The vacuum cleaner is installed on the cart. The vacuum cleaner is equipped with a dust collection hose. The dust suction soft The tube is fixed to the sleeve. The utility model can be adapted to cleaning dome screens at different heights, different orientations and different positions, has a simple structure, is easy to use and has high cleaning efficiency.

Description

Ball curtain cleaning device of ball curtain cinema of recreation ground
Technical Field
The utility model relates to the technical field of playgrounds, in particular to a ball curtain cleaning device for a ball curtain cinema of a playground.
Background
The dome movie is also called a "dome movie" or a "dome movie". A large screen movie appears in the 70 s of the 20 th century. The shooting and the projection adopt ultra-wide angle fish-eye lenses, the auditorium is of a dome structure, the screen is hemispherical, and the audience is surrounded by the screen, so that the screen looks like a dome. Because the screen image is large and clear, the screen image extends from the front to the back of the audience, and is accompanied by stereo ring sound, the audience can have very strong on-site effect if the audience is placed in the screen image.
At present, in order to attract tourists, the interest of the amusement park is increased, and a spherical screen cinema is correspondingly introduced, but after the spherical screen cinema is used for a long time, dust can be accumulated on the inner surface of the spherical screen, so that the watching effect of a film is affected. And because the ball curtain is high, but the surface is not bearing, and ball curtain periphery position is narrow, and the lift is difficult to get into, and the staff need manual use telescopic link cooperation brush head to clean the ball curtain, and when the telescopic link stretches out and draws back longer, the staff is handheld the hand of telescopic link just more hard, and just not control well, and the cleaning degree of difficulty is great.
Disclosure of Invention
The utility model provides a ball curtain cleaning device of a ball curtain cinema of an amusement park, which solves the problems of laborious cleaning and insufficient cleaning when a worker manually cleans the ball curtain of the ball curtain cinema in the prior art.
The utility model is realized by the following technical scheme:
a ball curtain cleaning device for a ball curtain cinema of a recreation ground, comprising:
a cart;
the chassis is arranged on the cart;
a rotating plate rotatably arranged on the chassis;
the sleeve is arranged on one side of the rotating plate and hinged with the rotating plate;
the electric telescopic cylinder is arranged on the other side of the rotating plate, one end of the electric telescopic cylinder is hinged with the rotating plate, and the other end of the electric telescopic cylinder is hinged with the sleeve, so that the sleeve can rotate forwards or backwards along the horizontal direction; and
the dust collector is arranged on the cart;
wherein the rotating plate is provided with a first locking component;
the dust collector is provided with a dust collection hose which is fixed on the sleeve.
The sleeve is provided with a detachable long rod, the long rod is provided with a fixing part for fixing the dust collection hose, and the sleeve is provided with a second locking part for locking the long rod.
Further technical scheme is that the fixing component comprises a plurality of pipe clamps, and the pipe clamps are arranged on the long rod at intervals along a preset distance.
The second locking component comprises a second bolt, a plurality of second through holes formed in the sleeve and a plurality of second screw holes formed in the long rod, and the second bolt penetrates through the second through holes to be screwed into the second screw holes to fix the long rod on the sleeve.
The rotary support plate is fixedly arranged on the chassis, and the rotary plate is in rotary connection with the rotary support plate.
The technical scheme is that a slotted hole is formed in the rotary supporting plate, a bearing is arranged in the slotted hole, a rotating shaft is arranged at the bottom of the rotary plate, and the rotating shaft is in rotary connection with the bearing.
The further technical scheme is that the first locking component comprises a first bolt, a first through hole formed in the rotating plate and a plurality of first screw holes formed in the chassis, and the first bolt penetrates through the first through hole and is screwed into the first screw holes to fix the rotating plate on the chassis.
Further technical scheme is, the both sides of rotor plate set up first mount pad and second mount pad respectively, set up the third mount pad on the sleeve, first mount pad with telescopic one end is articulated, the second mount pad with electric telescopic jar's one end is articulated, the third mount pad with electric telescopic jar's the other end is articulated.
The further technical scheme is that a groove is formed in the chassis, a plurality of connecting rods are arranged on the groove, and the dust collector is arranged on the connecting rods.
The further technical scheme is that the dust collection hose is provided with a two-way pipe.
The utility model has the beneficial effects that:
when the utility model is used, the power supply of the dust collector and the electric telescopic cylinder is connected, and the cart is pushed to the spherical screen surface to be cleaned; then adjusting the extension amount of the electric telescopic cylinder to enable the sleeve to rotate forwards or backwards for a certain angle along the horizontal direction, so that the suction port position of the dust collection hose on the sleeve is lowered or raised, and the suction port height of the dust collection hose is adjusted; finally, the rotary plate is adjusted, and the direction of the suction port of the dust collection hose is adjusted, so that the suction port of the dust collection hose is aligned to different positions of the ball curtain for dust collection; the ball curtain cleaning device is simple in structure, convenient to use, time-saving, labor-saving and better in ball curtain cleaning effect.
Drawings
Fig. 1 is a schematic perspective view of a cart according to the present utility model;
FIG. 2 is a schematic side view of the cart of the present utility model;
fig. 3 is a schematic overall structure of the present utility model.
Reference numerals illustrate:
1. a chassis; 2. a slewing support plate; 3. a first mount; 4. a rotating plate; 5. a second mounting base; 6. a fixing plate; 7. an electric telescopic cylinder; 8. a third mount; 9. a sleeve; 10. an armrest; 11. a connecting rod; 12. a groove; 13. a wheel; 14. a first bolt; 15. a first screw hole; 16. a long rod; 17. a dust collection hose; 18. a pipe clamp; 19. a two-way pipe; 20. a dust collector; 21. a second through hole; 22. and a second bolt.
Detailed Description
The present utility model will be described in further detail below in order to make the objects, technical solutions and effects of the present utility model more clear and distinct. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
At present, when the ball curtain of the ball curtain cinema of the existing amusement park is cleaned, due to the special structure of the ball curtain, the lifter cannot enter, and a worker can only clean the ball curtain by holding the telescopic rod to match with the brush.
Therefore, the inventor aims at the technical problems and provides an improvement scheme, which is as follows:
the utility model provides a ball curtain cleaning device of amusement park ball curtain cinema, includes shallow, chassis 1, rotor plate 4, sleeve 9, electric telescopic jar 7 and dust catcher 20, wherein, chassis 1 set up in on the shallow, rotor plate 4 rotatable set up in chassis 1, sleeve 9 set up in one side of rotor plate 4, and with rotor plate 4 articulates, electric telescopic jar 7 set up in the opposite side of rotor plate 4, electric telescopic jar 7 one end with rotor plate 4 articulates, the other end with sleeve 9 articulates, so that sleeve 9 can be followed horizontal direction and forward or backward rotation, dust catcher 20 set up in on the shallow, dust catcher 20 set up dust absorption hose 17, dust absorption hose 17 is fixed sleeve 9.
In the above scheme, referring to fig. 1 to 3, the cart is composed of a frame, wheels 13 and a chassis 1, the number of the wheels 13 is 4, the wheels 13 are respectively and uniformly arranged at the bottom of the frame, the wheels 13 adopt universal wheels, and an existing locking structure of the wheels 13 is provided, so that the cart is convenient to fix; the chassis 1 is fixed on the frame and is used for installing parts, so that the dust collector 20 is conveniently fixed and a cleaning device is arranged; the cleaning device consists of a rotating plate 4, a sleeve 9, an electric telescopic cylinder 7 and a dust collector 20, wherein the electric telescopic cylinder 7 can enable the sleeve 9 to rotate forwards or backwards along the horizontal direction, namely the inclination angle of the sleeve 9 can be changed, so that the suction port position of a dust collection hose 17 fixed on the sleeve 9 is lowered or raised. Furthermore, since the rotary plate 4 can be rotated, the sleeve 9 can also be rotated to change the angle, thereby changing the orientation of the suction opening, such as the southwest, northwest, etc.; the sleeve 9 and the dust collection hose 17 may be fixed by various means, such as welding, adhesive, and the like, and is not limited thereto.
Further, the cart is further provided with a storage battery, the storage battery is electrically connected with the dust collector 20 and the electric telescopic cylinder 7, so that the use occasion of the device is not limited, an external power supply or an external power supply is not required to be pulled out, the convenience of the device is improved, and more particularly, the storage battery is a chargeable storage battery. In addition, the trolley is also provided with a handrail 10, so that a worker can push the trolley conveniently.
When in actual use, a worker firstly starts the power supply of the dust collector 20 and the electric telescopic cylinder 7, pushes the cart to the spherical screen of the spherical screen cinema to be cleaned, and locks the wheels 13 of the cart; then, the extension amount of the electric telescopic cylinder 7 is adjusted, when the electric telescopic cylinder 7 is extended, the sleeve 9 is rotated and tilted backward, and when the electric telescopic cylinder 7 is shortened, the sleeve 9 is rotated and tilted forward; the sleeve 9 can rotate forwards or backwards along the horizontal direction by a certain angle, so that the suction port position of the dust collection hose 17 on the sleeve 9 is lowered or raised, and the suction port height of the dust collection hose 17 is adjusted; finally, the rotary plate 4 is adjusted, the suction port of the dust collection hose 17 is adjusted, so that the rotary plate 4 rotates to a proper position, and then the rotary plate is locked by the first locking component, so that the suction port of the dust collection hose 17 is aligned to different positions of the ball curtain for dust collection; the ball curtain cleaning device is simple in structure, convenient to use, time-saving, labor-saving and better in ball curtain cleaning effect.
In one embodiment, the sleeve 9 is provided with a detachable wand 16, the wand 16 is provided with a fixing part for fixing the dust collection hose 17, and the sleeve 9 is provided with a second locking part for locking the wand 16. In the application, the sleeve 9 is sleeved with the long rod 16, the long rod 16 is fixed through the second locking component, and the dust collection hose 17 can be fixed on the long rod 16, so that the position of the dust collection hose 17 is further raised, and a ball curtain with a higher position is cleaned conveniently.
In one embodiment, the securing means comprises a plurality of tube clamps 18, the plurality of tube clamps 18 being spaced apart along the predetermined distance on the elongate rod 16. In the present utility model, the pipe clamps 18 are used to clamp the dust collection hose 17 such that the dust collection hose 17 is fixed to the wand 16, more specifically, the number of the pipe clamps 18 is 4, which are uniformly arranged on the wand 16; it should be noted that the pipe clamp 18 is of the prior art, and any pipe clamp 18 is available.
In one embodiment, the second locking member includes a second bolt 22, a plurality of second through holes 21 provided on the sleeve 9, and a plurality of second screw holes provided on the long rod 16, and the second bolt 22 is screwed into the second screw holes through the second through holes 21 to fix the long rod 16 to the sleeve 9. In the utility model, as the long rod 16 is sleeved and arranged in the sleeve 9, in order to ensure that the long rod 16 is not easy to shake, the long rod 16 is locked on the sleeve 9 by arranging the second locking part; the scheme adopts a common bolt form to lock the long rod 16, has simple structure, convenient disassembly and low cost.
In one embodiment, the rotary support plate 2 is fixedly arranged on the chassis 1, and the rotary plate 4 is rotatably connected with the rotary support plate 2. In the utility model, a rotary supporting plate 2 is arranged in the middle of a chassis 1, and the rotary supporting plate 2 is disc-shaped; more specifically, the slewing bearing plate 2 is fixed on the chassis 1 in a common bolt mode, so that the disassembly and the fixation are convenient; when in actual use, the rotary support plate 2 is arranged for supporting the rotary plate 4 to rotate, so that the chassis 1 is prevented from being directly arranged on the chassis 1 and the strength of the chassis 1 is easily affected, and the reliability of the chassis 1 is improved.
Further, a slot hole is formed in the slewing support plate 2, a bearing is arranged in the slot hole, a rotating shaft is arranged at the bottom of the rotating plate 4, and the rotating shaft is rotatably connected with the bearing. In the present utility model, by providing the bearing for connection with the rotation shaft of the rotation plate 4, the rotation plate 4 reduces rotation friction and ensures rotation accuracy of the rotation plate 4.
In one embodiment, the first locking component comprises a first bolt 14, a first through hole arranged on the rotating plate 4 and a plurality of first screw holes 15 arranged on the chassis 1, and the first bolt 14 is screwed into the first screw holes 15 through the first through hole to fix the rotating plate 4 on the chassis 1. In the utility model, the first through hole is designed in the middle of the rotating plate 4, the first screw hole 15 is arranged on the chassis 1 and is designed on the rotating track of the first through hole, more specifically, the number of the first screw holes 15 is a plurality, and the number of the first bolts 14 and the first through holes is one; in actual use, the first through hole and the first screw hole 15 are only required to be ensured to be on the same circular track; this scheme locks rotor plate 4 through setting up ordinary bolt form, simple structure, the installation of being convenient for and dismantlement.
In one embodiment, the two sides of the rotating plate 4 are respectively provided with a first mounting seat 3 and a second mounting seat 5, the sleeve 9 is provided with a third mounting seat 8, the first mounting seat 3 is hinged to one end of the sleeve 9, the second mounting seat 5 is hinged to one end of the electric telescopic cylinder 7, and the third mounting seat 8 is hinged to the other end of the electric telescopic cylinder 7. In the utility model, the first mounting seat 3, the second mounting seat 5 and the third mounting seat 8 are completely identical in structural shape and have the same function, and are used for hinging to rotate the sleeve 9 and the electric telescopic cylinder 7; more specifically, the mounting seat is composed of two plates which are symmetrically arranged with each other, and the middle part is provided with a pin shaft which is used for connecting the end part of the sleeve 9 and the end part of the electric telescopic cylinder 7; this scheme is through setting up first mount pad 3, second mount pad 5 and third mount pad 8 for rotor plate 4 can carry out the rotation of certain angle under the drive of electric telescopic jar 7, is convenient for adjust the high position of dust absorption hose 17.
In one embodiment, a groove 12 is formed on the chassis 1, a plurality of connecting rods 11 are arranged on the groove 12, and the dust collector 20 is mounted on the connecting rods 11. In the utility model, the chassis 1 is composed of an upper part for installing the electric telescopic cylinder 7, the sleeve 9, the rotating plate 4 and other parts, and a lower part for installing the dust collector 20; more specifically, a groove 12 is arranged at the lower part, a plurality of connecting rods 11 are arranged in the groove 12, and the connecting rods 11 are used for supporting the dust collector 20; due to the inner wall of the groove 12, the dust collector 20 is blocked by the inner wall when being placed in the groove 12, and is not easy to slide out of the chassis 1 when in use; it should be noted that welding or adhesive means may be used to secure the cleaner 20 to the recess 12.
In one embodiment, the dust collection hose 17 is provided with a two-way pipe 19. In the application, as the dust collection hose 17 needs to be fixed on the sleeve 9 and the long rod 16, the two-way pipe 19 is arranged at the end part of the other end of the dust collection hose 17, so that a single suction port of the dust collection hose 17 is changed into a double suction port, the cleaning efficiency is higher, and the cleaning effect is better.
In summary, the device of the utility model can replace the manual operation, has small volume, can be pushed into the spherical screen frame for use, and changes the position of the dust collection hose 17 by moving the cart; by rotating the rotating plate 4, the suction port orientation of the dust collection hose 17 on the sleeve 9 is changed; by adjusting the extension amount of the electric telescopic cylinder 7, the inclination angle of the sleeve 9 is changed, and the suction opening height of the dust collection hose 17 is changed; the device can be suitable for cleaning the ball curtain at different heights, different directions and different positions, and has the advantages of simple structure, convenient use and high cleaning efficiency.
Of course, the present utility model can be implemented in various other embodiments, and based on this embodiment, those skilled in the art can obtain other embodiments without any inventive effort, which fall within the scope of the present utility model.

Claims (10)

1. Ball curtain cleaning device of amusement park ball curtain cinema, characterized by comprising:
a cart;
the chassis is arranged on the cart;
a rotating plate rotatably arranged on the chassis;
the sleeve is arranged on one side of the rotating plate and hinged with the rotating plate;
the electric telescopic cylinder is arranged on the other side of the rotating plate, one end of the electric telescopic cylinder is hinged with the rotating plate, and the other end of the electric telescopic cylinder is hinged with the sleeve, so that the sleeve can rotate forwards or backwards along the horizontal direction; and
the dust collector is arranged on the cart;
wherein the rotating plate is provided with a first locking component;
the dust collector is provided with a dust collection hose which is fixed on the sleeve.
2. The ball curtain cleaning device of the ball curtain cinema of the amusement park according to claim 1, wherein the sleeve is provided with a detachable long rod, the long rod is provided with a fixing part for fixing the dust collection hose, and the sleeve is provided with a second locking part for locking the long rod.
3. The amusement park curtain cleaning apparatus according to claim 2, wherein said fixing means comprises a plurality of tube clamps, a plurality of said tube clamps being arranged on said pole at intervals along a predetermined distance.
4. The amusement park ball curtain cleaning device according to claim 2, wherein the second locking member comprises a second bolt, a plurality of second through holes provided on the sleeve, and a plurality of second screw holes provided on the long rod, the second bolt being screwed into the second screw holes through the second through holes to fix the long rod to the sleeve.
5. The ball curtain cleaning device of the ball curtain cinema of the amusement park according to claim 1, further comprising a rotary support plate fixedly arranged on the chassis, wherein the rotary plate is rotatably connected with the rotary support plate.
6. The ball curtain cleaning device for the ball curtain cinema of the amusement park according to claim 5, wherein a slotted hole is arranged on the slewing supporting plate, a bearing is arranged in the slotted hole, a rotating shaft is arranged at the bottom of the rotating plate, and the rotating shaft is rotationally connected with the bearing.
7. The amusement park ball curtain cleaning device according to claim 1, wherein the first locking member comprises a first bolt, a first through hole provided on the rotating plate, and a plurality of first screw holes provided on the chassis, the first bolt being screwed into the first screw holes through the first through hole to fix the rotating plate on the chassis.
8. The ball curtain cleaning device of the ball curtain cinema of the amusement park according to claim 1, wherein a first mounting seat and a second mounting seat are respectively arranged on two sides of the rotating plate, a third mounting seat is arranged on the sleeve, the first mounting seat is hinged with one end of the sleeve, the second mounting seat is hinged with one end of the electric telescopic cylinder, and the third mounting seat is hinged with the other end of the electric telescopic cylinder.
9. The ball curtain cleaning device of the ball curtain cinema of the amusement park according to claim 1, wherein a groove is arranged on the chassis, a plurality of connecting rods are arranged on the groove, and the dust collector is arranged on the connecting rods.
10. The ball curtain cleaning device of the ball curtain cinema of the amusement park according to claim 1, wherein the dust collection hose is provided with a two-way pipe.
CN202320264573.XU 2023-02-15 2023-02-15 Ball curtain cleaning device of ball curtain cinema of recreation ground Expired - Fee Related CN219702863U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320264573.XU CN219702863U (en) 2023-02-15 2023-02-15 Ball curtain cleaning device of ball curtain cinema of recreation ground

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320264573.XU CN219702863U (en) 2023-02-15 2023-02-15 Ball curtain cleaning device of ball curtain cinema of recreation ground

Publications (1)

Publication Number Publication Date
CN219702863U true CN219702863U (en) 2023-09-19

Family

ID=87978338

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320264573.XU Expired - Fee Related CN219702863U (en) 2023-02-15 2023-02-15 Ball curtain cleaning device of ball curtain cinema of recreation ground

Country Status (1)

Country Link
CN (1) CN219702863U (en)

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Granted publication date: 20230919