CN111977419A

CN111977419A - Prevent flying foam device

Info

Publication number: CN111977419A
Application number: CN202011006326.7A
Authority: CN
Inventors: 徐伟; 沙鑫美; 陈文全; 刘丹妮; 黄子航; 陈梦源; 杨萧
Original assignee: Sanjiang University
Current assignee: Sanjiang University
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2020-11-24
Anticipated expiration: 2040-09-23
Also published as: CN111977419B

Abstract

The invention provides an anti-foam-flying device, belonging to the technical field of mechanical transmission devices; the glass paper is connected between the driven bracket and the driving bracket; a horizontal paper tube shaft and a vertical paper tube shaft are arranged in the driven bracket, and full paper tubes wound with glass paper are arranged on the paper tube shafts; a horizontal paper tube shaft, a vertical paper tube shaft and a driving shaft are arranged in the driving support, an empty paper tube is arranged on the paper tube shaft in the driving support, and the cellophane filled in the paper tube penetrates out of the driven support to enter the driving support and is connected with the empty paper tube; in the driving support, motors are arranged on a driving shaft and a vertical paper tube shaft of the driving support, the driving shaft and the horizontal paper tube shaft are driven through synchronous belt pulleys, and the motors can drive the driving shaft and the vertical paper tube shaft to rotate under the control of a control cabinet, so that the replacement of cellophane is realized, and the transmission of spray is effectively inhibited; an ultraviolet lamp is further arranged in the active support to sterilize the glass paper, so that secondary transmission in the recovery process is prevented.

Description

Prevent flying foam device

Technical Field

The invention belongs to the technical field of protective devices, and particularly relates to an anti-foam-flying device.

Background

During epidemic situations, dining halls of a plurality of enterprises and schools adopt isolation baffles to separate dining positions, and spray propagation is blocked. The isolation baffle can only be used for preventing cross infection, however, the droplets and residues left on the isolation baffle by the former user often have no time to be disinfected and cleaned, and the latter user continues to eat in the environment without disinfection and cleaning, so that virus transmission is easily caused. Therefore, there is a need for an anti-splashing device that can clean the dining environment in time.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the anti-foam-flying device, which adopts the cellophane to replace a common isolation baffle, and utilizes the gear transmission to drive the cellophane cylinder to rotate, thereby realizing the replacement of the cellophane and effectively preventing the foam from spreading.

The present invention achieves the above-described object by the following technical means.

An anti-foam-flying device comprises a driven bracket and a driving bracket, wherein the driven bracket and the driving bracket are internally provided with paper tube shafts, and a control cabinet is also arranged in the driving bracket; a full paper cylinder wound with glass paper is mounted on a paper cylinder shaft in the driven support, an empty paper cylinder is mounted on a paper cylinder shaft in the driving support, and the glass paper on the full paper cylinder penetrates through the driven support to enter the driving support and is connected with the empty paper cylinder; the paper tube shaft in the driving support is driven by a motor, and the motor is in signal connection with the control cabinet.

Further, the paper tube shaft in the driven bracket comprises a horizontal paper tube shaft A and a vertical paper tube shaft A; one end of the horizontal paper tube shaft A is sequentially provided with a fixed conical clamping block A and a pair of bearings A, and the other end of the horizontal paper tube shaft A is in threaded connection with a movable conical clamping block A; one end of the vertical paper tube shaft A close to the bearing A is in threaded connection with a movable conical clamping block B, and the other end of the vertical paper tube shaft A is sequentially provided with a fixed conical clamping block B and a pair of bearings B.

Further, the paper tube shaft in the active bracket comprises a horizontal paper tube shaft B and a vertical paper tube shaft B; one end of the horizontal paper tube shaft B is in threaded connection with a movable conical clamping block C, the other end of the horizontal paper tube shaft B is sequentially provided with a fixed conical clamping block C and a pair of bearings E, and a synchronous belt pulley A is arranged on the horizontal paper tube shaft B between the bearings E; one end of the vertical paper tube shaft B close to the bearing E is in threaded connection with a movable conical clamping block D, the other end of the vertical paper tube shaft B is sequentially provided with a fixed conical clamping block D and a bearing G, and the tail end of the vertical paper tube shaft B close to the bearing G is connected with a motor D;

a driving shaft is further installed in the driving support, one end of the driving shaft is provided with a pair of bearings F, and a synchronous belt wheel B matched with the synchronous belt wheel A is installed on the driving shaft between the bearings F; the other end of the driving shaft is connected with a motor C.

Further, the bearing A, the bearing E and the bearing F are radial bearings, and the bearing B and the bearing G are thrust bearings.

Furthermore, a plurality of gray parting strips are arranged on the glass paper, and an ultraviolet lamp and a gray sensor which are in signal connection with the control cabinet are arranged on the inner wall of the active bracket close to the empty paper cylinder.

Furthermore, the driven bracket comprises two shells which have the same structure and are symmetrically detachably connected, a front cover plate is arranged at the front part of each shell, and an upper cover plate is arranged at the upper part of each shell; the external structure of the driving bracket is the same as that of the driven bracket.

Furthermore, the lower end of the shell on one side, opposite to the driving support and the driven support, is symmetrically provided with infrared sensors in signal connection with the control cabinet.

Further, a motor A and a motor B which are in signal connection with a control cabinet (18) are symmetrically arranged at the bottom of the shell on one side, opposite to the driven support, of the driving support respectively; the motor A and the motor B are respectively connected with the crankshaft A and the crankshaft B.

Furthermore, the casing, the front cover plate and the upper cover plate are all provided with strip-shaped holes for the cellophane to pass through.

Furthermore, the inner sides of the front cover plate and the upper cover plate are respectively provided with a counter bore, and radial bearings are arranged in the counter bores in an interference fit mode.

The invention has the following beneficial effects:

the anti-flying device provided by the invention can form a semi-enclosed personal space for users to use, has wide application range, is especially suitable for the space with larger flow of people, and can effectively inhibit the phenomenon of spreading viruses through flying. According to the invention, the infrared sensor is used for detecting a user, and the motor is controlled by the control cabinet to drive the paper tube shaft to rotate, so that the winding and replacement of the cellophane are realized, the automation degree is high, and the use is convenient; can effectively prevent the residual spray of the previous user from being spread to the next user, and save the human resource and the cost. The ultraviolet lamp and the gray sensor are arranged in the active bracket, and the ultraviolet lamp can disinfect the used cellophane to prevent the secondary spreading of the spray remained on the cellophane; gray parting bead on the grey level sensor can real-time response cellophane, and the auxiliary control cabinet is to the control of the motor number of turns to the rolling length of more accurately controlling cellophane avoids extravagant. The whole device is simple in structure, convenient to detach and move, quick in replacement of the cellophane and good in practical application significance.

Drawings

FIG. 1 is a schematic view of the anti-droplet apparatus according to the present invention;

FIG. 2 is a schematic view of the external structure of the driven bracket according to the present invention;

FIG. 3 is a schematic view of the internal structure of the driven bracket according to the present invention;

FIG. 4 is a schematic plan view of the cover plate of the present invention, wherein FIG. 4 (a) is a schematic plan view of the front cover plate, and FIG. 4 (b) is a schematic plan view of the upper cover plate;

FIG. 5 is a schematic view of the external structure of the active stent of the present invention;

FIG. 6 is a schematic diagram of the internal structure of the active mount without the UV lamp and the gray sensor according to the present invention;

FIG. 7 is a schematic diagram of the internal structure of the active mount for mounting the UV lamp and the gray sensor according to the present invention;

FIG. 8 is a diagram illustrating the effect of the installation of the glass fiber container of the anti-splash device of the present invention.

In the figure: 1-shell a; 2-shell B; 3-shell C; 4-shell D; 5-front cover plate A; 6-front cover plate B; 7-a connecting plate; 8-upper cover plate A; 9-upper cover plate B; 10-motor a; 11-motor B; 12-crankshaft a; 13-crankshaft B; 14-counterbore A; 15-counter bore B; 16-horizontal bar shaped holes; 17-vertical strip-shaped holes; 18-a control cabinet; 19-full paper cylinder; 20-empty paper cylinder; 21-bearing C; 22-bearing D; 23-a clamping plate; 110-horizontal cylinder axis a; 111-vertical cartridge axis a; 112-fixed tapered clamping block a; 113-fixing the tapered clamping block B; 114-movable conical gripping block a; 115-movable conical clamping block B; 116-bearing a; 117-bearing B; 118-infrared sensor a; 310-horizontal paper tube axis B; 311-a drive shaft; 312-vertical cartridge axis B; 313-fixing the tapered clamping block C; 314-stationary tapered clamping block D; 315-movable conical gripping block C; 316-movable conical gripping block D; 317-bearing E; 318-bearing F; 319-Motor C; 320-motor D; 321-synchronous pulley A; 322-synchronous pulley B; 323-infrared sensor B; 324-ultraviolet lamps; 325-grayscale sensor; 326-bearing G.

Detailed Description

The invention will be further described with reference to the following figures and specific examples, but the scope of the invention is not limited thereto.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, because they are not to be construed as limiting the present invention; the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections, direct connections, indirect connections through intervening media, and communication between two elements; the specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1, the anti-foam-flying device of the present invention includes a driven bracket and a driving bracket, and cellophane is connected between the driven bracket and the driving bracket.

As shown in fig. 2, the driven bracket includes a front cover plate A5, an upper cover plate a8, and a housing a1 and a housing B2 that are identical in structure and symmetrically arranged, a front cover plate A5 is installed at the front of the housing a1 and the housing B2, and an upper cover plate a8 is installed at the upper portion of the housing A5, the upper cover plate a8, the housing a1 and the housing B2 are preferably connected in a snap-fit manner, the housing a1 and the housing B2 are both in a concave structure, and are preferably connected and snapped in a threaded manner, as shown in fig. 2 and 3, a connecting plate 7 with a threaded hole is provided at each of the grooves of the housing a1 and the housing B2, and a snap-fit plate 23 for snapping-fit with the housing B2 is installed at one end of the bottom inside the housing a1, as shown in fig. 4, a plurality of snap-fit plates 7 for snapping-fit with the housing a1 and the housing B2 are also installed.

As shown in fig. 5, the driving bracket includes a front cover B6, an upper cover B9, a housing C3 and a housing D4, the external structures of the driving bracket and the driven bracket and the connection mode between the external structures are the same, and the housing C3 is close to the housing B2. As shown in fig. 2 and 5, a motor a10 and a motor B11 are respectively and symmetrically mounted at one end of the bottom of the side of the casing B2 opposite to the casing C3, and output shafts of the motor a10 and the motor B11 are respectively connected with a crankshaft a12 and a crankshaft B13 through couplings. The lower end of one side of the shell B2, which is opposite to the shell C3, is symmetrically provided with an infrared sensor A118 and an infrared sensor B323 respectively, and the infrared sensors are used for detecting whether a user exists or not and facilitating the automatic replacement of cellophane by the anti-spray device.

As shown in fig. 3, the internal structure of the driven bracket is as follows: the upper part of the driven bracket is provided with a horizontal paper tube shaft A110, and a vertical paper tube shaft A111 is arranged in the vertical direction. One end of a horizontal paper tube shaft A110 close to the vertical paper tube shaft A111 is sequentially provided with a fixed tapered clamping block A112 and a pair of bearings A116; preferably, the fixed conical clamping block A112 in the embodiment is connected with the horizontal paper tube shaft A110 through a screw; the other end of the horizontal paper tube shaft A110 is provided with an external thread, and the movable conical clamping block A114 is internally provided with an internal thread matched with the external thread, so that the movable conical clamping block A114 can be ensured to horizontally move on the horizontal paper tube shaft A110. One end of the vertical paper tube shaft A111 far away from the horizontal paper tube shaft A110 is sequentially provided with a fixed conical clamping block B113 and a pair of bearings B117, and preferably, the fixed conical clamping block B113 is connected with the vertical paper tube shaft A111 through a screw in the embodiment; the other end of the vertical paper tube shaft A111 is provided with an external thread, and the movable conical clamping block B115 is internally provided with an internal thread matched with the internal thread, so that the movable conical clamping block B115 can be ensured to horizontally move on the vertical paper tube shaft A111. The inside of the casing A1 and the inside of the casing B2 are both provided with grooves (for convenience of representation, the casing B2 is not shown in figure 3) for mounting the bearing A116 and the bearing B117, and the horizontal paper tube shaft A110 and the vertical paper tube shaft A111 can be fixed in a driven bracket. As shown in fig. 3 and 4, a counterbore a14 and a counterbore B15 are respectively arranged on the inner sides of the front cover plate a5 and the upper cover plate A8, a bearing C21 and a bearing D22 are respectively arranged in the counterbore a14 and the counterbore B15 in an interference fit manner, one end of the horizontal paper tube shaft a110 with the external thread can be arranged in the bearing C21, one end of the vertical paper tube shaft a111 with the external thread can be arranged in the bearing D22, and the installation stability of the paper tube shaft is further improved.

As shown in fig. 6, the internal structure of the active stent is as follows: the upper part of the driving bracket is provided with a horizontal paper tube shaft B310, the lower part of the driving bracket is provided with a driving shaft 311 parallel to the horizontal paper tube shaft B310, and a vertical paper tube shaft B312 is arranged in the vertical direction. A fixed conical clamping block C313 and a pair of bearings E317 are sequentially arranged at one end of the horizontal paper tube shaft B310 close to the vertical paper tube shaft B312, and preferably, the fixed conical clamping block C313 is connected with the horizontal paper tube shaft B310 through a screw in the embodiment; a pair of bearings F318 is mounted at one end of the driving shaft 311 near the vertical cartridge shaft B312; the insides of the casing C3 and the casing D4 are both provided with grooves (for convenience of representation, the casing D4 is not shown in FIG. 6) for mounting the bearing E317 and the bearing F318, so that the horizontal paper tube shaft B310 and the vertical paper tube shaft B312 can be fixed in the active bracket; a synchronous pulley A321 is arranged on the horizontal paper tube shaft B310 between the bearings E317, a synchronous pulley B322 matched with the synchronous pulley A321 is arranged on the driving shaft 311 between the bearings F318, and the synchronous pulley A321 is connected with the synchronous pulley B322 through a synchronous belt; the other end of the horizontal paper tube shaft B310 is provided with an external thread, and the movable conical clamping block C315 is internally provided with an internal thread matched with the external thread, so that the movable conical clamping block C315 can horizontally move on the horizontal paper tube shaft B310; the other end of the drive shaft 311 is connected to an output shaft of the motor C319 through a coupling.

A fixed conical clamping block D314 and a bearing G326 are sequentially installed at one end of the vertical paper tube shaft B312 far away from the horizontal paper tube shaft B310, and preferably, the fixed conical clamping block D314 is connected with the vertical paper tube shaft B312 through a screw in the embodiment; the tail end of the vertical paper tube shaft B312 close to the fixed conical clamping block D314 is connected with a motor D320 through a coupler; the other end of the vertical paper tube shaft B312 is provided with an external thread, and the movable conical clamping block D316 is internally provided with an internal thread matched with the external thread, so that the movable conical clamping block D316 can be ensured to horizontally move on the vertical paper tube shaft B312.

The bearing A116, the bearing C21, the bearing D22, the bearing E317 and the bearing F318 are all radial bearings, and the bearing B117 and the bearing G326 are all thrust bearings; in the radial bearing and the thrust bearing in this embodiment, axial positioning of the bearings is achieved by the circlips for the shaft, and the stability of the paper tube shaft and the drive shaft 311 during rotation is further improved.

As shown in fig. 7, the ultraviolet lamp 324 and the gray sensor 325 are mounted on the inner wall of the casing C3 on one side of the vertical paper tube axis B312 and the inner wall of the casing C3 on the upper part of the horizontal paper tube axis B310; the ultraviolet lamp 324 is used for disinfecting the used cellophane, so that secondary transmission in the process of recovering the cellophane is avoided; the glass paper used in the embodiment is preferably glass paper with a plurality of gray parting strips, the gray parting strips are evenly spaced, and the gray parting strips can be sensed by the gray sensor 325 in real time, so that the anti-splashing device is facilitated to roll the glass paper with a certain length more accurately. The lower part of the driving bracket is also provided with a control cabinet 18, and the motor A10, the motor B11, the motor C319 and the motor D320 are preferably direct-current speed reduction motors and are in signal connection with the control cabinet 18; the infrared sensor a118, the infrared sensor B323, the ultraviolet lamp 324, and the gray sensor 325 are also in signal connection with the control cabinet 18.

As shown in fig. 2 and 5, the shell B2 and the shell C3 are symmetrically provided with a horizontal strip-shaped hole 16 and a vertical strip-shaped hole 17 for cellophane to pass through, the front cover plate a and the upper cover plate a connected with the shell B are respectively provided with the horizontal strip-shaped hole 16 and the vertical strip-shaped hole 17 on the outside, and the front cover plate B and the upper cover plate B connected with the shell C are also respectively provided with the horizontal strip-shaped hole 16 and the vertical strip-shaped hole 17 on the outside.

Before the anti-foam-flying device provided by the invention is actually used, a glass fiber container is required to be installed in the device, and the specific installation process is as follows:

firstly, opening a front cover plate A5, a front cover plate B6, an upper cover plate A8 and an upper cover plate B9, then placing a full paper tube 19 wound with cellophane on a horizontal paper tube shaft A110 at the upper part of a driven bracket from the front cover plate A5, and clamping the full paper tube by rotating a movable conical clamping block A114; by using the method, the full paper tube 19 is respectively filled into the driven bracket from the position A8 of the upper cover plate, and the empty paper tube 20 which is not winded with the cellophane is filled into the driving bracket from the position B6 of the front cover plate and the position B9 of the upper cover plate. Then, the cellophane of the full paper tube 19 mounted on the horizontal paper tube shaft A110 is drawn out from the horizontal strip-shaped hole 16 of the shell B2 and pulled down, so that the cellophane sequentially passes through the gap between the crankshaft A12 and the bottom of the shell B2 and the gap between the crankshaft B13 and the bottom of the shell C3, the cellophane is continuously pulled up, and the cellophane passes through the horizontal strip-shaped hole 16 of the shell C3 and is adhered to the empty paper tube 20 of the horizontal paper tube shaft B310; the cellophane filled with the paper tube 19 and mounted on the vertical paper tube shaft a111 is drawn out from the vertical strip-shaped hole 17 of the casing B2, then the drawn cellophane passes through the vertical strip-shaped hole 17 of the casing C3 and is adhered to the empty paper tube 20 of the vertical paper tube shaft B312, the installation of the cellophane tube is completed, the effect diagram is shown in fig. 8, and finally the corresponding cover plate is mounted and used.

The anti-flying device provided by the invention can be used for dining in dining halls and can also be used as an isolating device in other occasions, so that the flying of the flying powder is effectively prevented. The present embodiment will be described by taking only a use case of dining in a dining room as an example:

when the anti-foam-flying device is actually used, the whole anti-foam-flying device is fixed on a dining table through back glue at the bottom of the support, when a diner is detected to be useful by the infrared sensor A118 and the infrared sensor B323, detection information is transmitted to the control cabinet 18, the control cabinet 18 controls the motor A10 and the motor B11 to work to respectively drive the crankshaft A12 and the crankshaft B13 to rotate, and cellophane is compressed, so that the anti-foam-flying device is convenient for the diner to use; after the meal is finished, the diner leaves, the infrared sensor A118 and the infrared sensor B323 continue to transmit the real-time detection information to the control cabinet 18, and at the moment, the control cabinet 18 controls the motor C319 and the motor D320 to work; the motor C319 drives the driving shaft 311 to rotate, the synchronous belt pulley B322 arranged on the driving shaft 311 rotates, the synchronous belt pulley B322 drives the synchronous belt pulley A321 to rotate, the synchronous belt pulley A321 drives the horizontal paper tube shaft B310, and the empty paper tube 20 on the horizontal paper tube shaft B310 rotates and winds the cellophane; meanwhile, the motor D320 also drives the vertical paper tube shaft B312 to rotate, and the empty paper tube 20 on the vertical paper tube shaft B312 rotates and winds the cellophane; through the process, the glassine paper with the droplets around the droplet prevention device can be collected into the active bracket and disinfected by the ultraviolet lamp 324, and meanwhile, the new glassine paper is replaced for the next diner to use; in the process of rolling the cellophane, the gray parting strip on the cellophane is sensed in real time by the gray sensor 325 in the active support, the sensing information is transmitted to the control cabinet 18, and the control cabinet 18 controls the rotation turns of the motor C319 and the motor D320 according to the received sensing information, so that the rolling length of the cellophane is accurately controlled, and waste is avoided.

The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An anti-foam-flying device is characterized by comprising a driven bracket and a driving bracket, wherein the driven bracket and the driving bracket are internally provided with paper tube shafts, and a control cabinet (18) is also arranged in the driving bracket; a full paper cylinder (19) wound with glass paper is mounted on a paper cylinder shaft in the driven support, an empty paper cylinder (20) is mounted on a paper cylinder shaft in the driving support, and the glass paper on the full paper cylinder (19) passes through the driven support to enter the driving support and is connected with the empty paper cylinder (20); the paper tube shaft in the driving support is driven by a motor, and the motor is in signal connection with a control cabinet (18).

2. The anti-entrainment device according to claim 1, wherein the cartridge shaft in the driven carriage comprises a horizontal cartridge shaft a (110) and a vertical cartridge shaft a (111); one end of the horizontal paper tube shaft A (110) is sequentially provided with a fixed conical clamping block A (112) and a pair of bearings A (116), and the other end is in threaded connection with a movable conical clamping block A (114); one end of the vertical paper tube shaft A (111) close to the bearing A (116) is in threaded connection with a movable conical clamping block B (115), and the other end is sequentially provided with a fixed conical clamping block B (113) and a pair of bearings B (117).

3. The anti-entrainment device according to claim 2, wherein the cartridge shaft within the active carrier comprises a horizontal cartridge shaft B (310) and a vertical cartridge shaft B (312); one end of the horizontal paper tube shaft B (310) is in threaded connection with a movable conical clamping block C (315), the other end of the horizontal paper tube shaft B (310) is sequentially provided with a fixed conical clamping block C (313) and a pair of bearings E (317), and a synchronous belt wheel A (321) is arranged on the horizontal paper tube shaft B (310) between the bearings E (317); one end of a vertical paper tube shaft B (312) close to the bearing E (317) is in threaded connection with a movable conical clamping block D (316), the other end of the vertical paper tube shaft B is sequentially provided with a fixed conical clamping block D (314) and a bearing G (326), and the tail end of the vertical paper tube shaft B (312) close to the bearing G (326) is connected with a motor D (320);

a driving shaft (311) is further installed in the driving support, one end of the driving shaft (311) is provided with a pair of bearings F (318), and a synchronous belt wheel B (322) matched with the synchronous belt wheel A (321) is installed on the driving shaft (311) between the bearings F (318); the other end of the driving shaft (311) is connected with a motor C (319).

4. The anti-entrainment device according to claim 3, characterized in that the bearing A (116), the bearing E (317), the bearing F (318) are radial bearings, and the bearing B (117), the bearing G (319) are thrust bearings.

5. The anti-entrainment device according to claim 3, characterized in that the glassine paper is provided with a plurality of grey spacers, and the inner wall of the active support near the empty paper cartridge (20) is provided with an ultraviolet lamp (324) and a gray sensor (325) which are in signal connection with the control cabinet (18).

6. The anti-entrainment device according to claim 1, wherein the driven bracket comprises two shells which are identical in structure and symmetrically detachably connected, a front cover plate is installed at the front part of the shell, and an upper cover plate is installed at the upper part of the shell; the external structure of the driving bracket is the same as that of the driven bracket.

7. The anti-entrainment device according to claim 6, characterized in that the lower ends of the housings on the opposite sides of the driving bracket and the driven bracket are symmetrically provided with infrared sensors in signal connection with the control cabinet (18).

8. The anti-entrainment device according to claim 6, characterized in that the bottom of the housing on the side opposite to the driven bracket of the driving bracket is symmetrically provided with a motor A (10) and a motor B (11) which are in signal connection with a control cabinet (18); the motor A (10) and the motor B (11) are respectively connected with the crankshaft A (12) and the crankshaft B (13).

9. The anti-entrainment device according to claim 6, wherein the housing, the front cover plate and the upper cover plate are each externally provided with a strip-shaped hole through which cellophane passes.

10. The anti-entrainment device of claim 6, wherein the inner sides of the front cover plate and the upper cover plate are provided with counter bores, and radial bearings are arranged in the counter bores in an interference manner.