Photovoltaic panel cleaning device

Abstract

The utility model relates to the field of photovoltaic cleaning devices, in particular to a photovoltaic panel cleaning device which comprises a shell, a driving mechanism, a walking mechanism and a cleaning mechanism. The driving mechanism, the walking mechanism and the cleaning mechanism are all arranged in the shell. The driving mechanism comprises a first motor and a second motor; the walking mechanism comprises an upper end walking wheel set, a middle end walking wheel set and a lower end walking wheel set which are arranged in the length direction of the shell at intervals, and one middle end walking wheel in the middle end walking wheel set and one upper end walking wheel in the upper end walking wheel set are connected through a first synchronous wheel shaft and driven by a first motor. The other middle-end walking wheel in the middle-end walking wheel group is connected with one lower-end walking wheel in the lower-end walking wheel group through a second synchronous wheel shaft and is driven by a second motor, so that the photovoltaic panel cleaning equipment walks on the surface of the photovoltaic panel; the cleaning mechanism is arranged on one side of the walking mechanism in the length direction of the shell and used for cleaning the surface of the photovoltaic panel.

Description

Technical Field

[0001] The embodiments of this specification relate to the field of photovoltaic cleaning devices, and in particular to a photovoltaic panel cleaning device. Background Art

[0002] Large photovoltaic power plants are usually located in the Gobi Desert. However, the wind and sand in these areas often cover the surface of photovoltaic modules, which significantly reduces their power generation efficiency. In order to deal with this problem, photovoltaic panel cleaning robots have come into being. These robots clean photovoltaic panels efficiently and safely. They can effectively remove pollutants that fall on photovoltaic panels, ensuring the power generation efficiency of photovoltaic modules.

[0003] However, the existing photovoltaic panel cleaning robots are designed with a single motor driving all the running wheels. When faced with the vertical difference between adjacent photovoltaic modules in the actual environment, this synchronous running system may cause one side's running wheel to pass smoothly, while the other side's running wheel is stuck at the difference, thus causing running obstacles. As the size of photovoltaic panels increases, elongated photovoltaic panel cleaning robots have emerged. However, for long photovoltaic panel cleaning robots, if there is a vertical difference between adjacent photovoltaic modules during work, the running obstacle problem caused will only be more serious. Utility Model Content

[0004] The embodiments of the present specification provide a photovoltaic panel cleaning device, aiming to solve one or more of the above problems and other potential problems.

[0005] In order to achieve the above objectives, the following technical solutions are provided:

[0006] The present specification provides a photovoltaic panel cleaning device, including a shell, a driving mechanism, a walking mechanism and a cleaning mechanism; the driving mechanism, the walking mechanism and the cleaning mechanism are all arranged in the shell; the driving mechanism includes a first motor and a second motor; the walking mechanism includes an upper walking wheel group, a middle walking wheel group and a lower walking wheel group arranged at intervals along the length direction of the shell, one of the middle walking wheels in the middle walking wheel group is connected to one of the upper walking wheels in the upper walking wheel group through a first synchronous wheel shaft, and the other of the middle walking wheels in the middle walking wheel group is connected to one of the lower walking wheels in the lower walking wheel group through a second synchronous wheel shaft; the first motor drives the upper walking wheel group and synchronously drives one of the middle walking wheels of the middle walking wheel group through the first synchronous wheel shaft, the second motor drives the lower walking wheel group and synchronously drives the other of the middle walking wheels of the middle walking wheel group through the second synchronous wheel shaft, so that the photovoltaic panel cleaning device walks on the surface of the photovoltaic panel; the cleaning mechanism is arranged on one side of the walking mechanism along the length direction of the shell and is used to clean the surface of the photovoltaic panel.

[0007] In some embodiments, the shell includes a side cover and a cover plate, the side cover is arranged at both ends of the cover plate; the cover plate includes a plurality of single covers connected end to end; the side cover and the plurality of single covers connected end to end are connected via a connecting mechanism.

[0008] In some embodiments, the connection mechanism includes a connection rod and a fixing plate disposed adjacent to a plurality of the single covers, and the fixing plate is sleeved outside the connection rod.

[0009] In some embodiments, a fastener is provided at the connection between the connecting rod and the fixing plate.

[0010] In some embodiments, the first synchronous axle and the second synchronous axle each include a driving shaft and a driven shaft, and the driving shaft and the driven shaft are connected by a coupling to rotate synchronously.

[0011] In some embodiments, a wheel power shaft is provided in the walking mechanism; one side of the wheel power shaft of the upper walking wheel group and the lower walking wheel group is connected to the motor shaft of the first motor and the second motor respectively.

[0012] In some embodiments, shaft sleeves are respectively provided on both sides of the wheel power shaft, and fastening shaft sleeves for fastening the shaft sleeves are provided on both sides of the shaft sleeves.

[0013] In some embodiments, the mid-end running wheel set is fixed to both sides of the fixing plate through the wheel power shaft.

[0014] In some embodiments, the fixing plate (14) connected to the middle-end running wheel set (32) is higher in height in a direction perpendicular to the length of the shell than the other fixing plates (14).

[0015] In some embodiments, the side covers are provided with limiting guide wheels for limiting the photovoltaic panel cleaning device on the photovoltaic panel, and the outer edges of the limiting guide wheels are respectively geared with the upper and lower ends of the photovoltaic panel and move along the upper and lower ends of the photovoltaic panel.

[0016] A photovoltaic panel cleaning device in an embodiment of the present specification uses different motors to independently drive the upper running wheel group of the photovoltaic panel cleaning device to synchronously drive one of the middle running wheel groups and the lower running wheel group to synchronously drive the other of the middle running wheel groups, so as to control the speed of the upper running wheel and the lower running wheel respectively. Especially for the photovoltaic panel cleaning device with an extended size, the defect in the prior art that the photovoltaic panel cleaning device may have an operation obstacle and get stuck at the gap of the photovoltaic panel when there is a gap between the upper and lower ends of the photovoltaic panel is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other objects, features and advantages of the embodiments of the present specification will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present specification are shown by way of example and not limitation.

[0018] Figure 1 A schematic diagram of the structure of a photovoltaic panel cleaning device provided in an embodiment of this specification;

[0019] In the various drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0020] 11-side cover, 111-limiting guide wheel, 12-single cover, 13-connecting rod, 14-fixing plate, 21-first motor, 22-second motor, 31-upper end walking wheel group, 32-middle end walking wheel group, 33-lower end walking wheel group, 34-first synchronous wheel axle, 35-second synchronous wheel axle, 36-coupling, 4-cleaning mechanism. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present specification will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present specification are shown in the accompanying drawings, it should be understood that the present specification can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present specification more thorough and complete, and to fully convey the scope of the present specification to those skilled in the art.

[0022] The term "including" and its variations used in this document represent open inclusion, that is, "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one other embodiment". Terms such as "upper", "lower", "front", and "rear" indicating placement or positional relationships are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the principles of this specification, and do not indicate or imply that the referred elements must have a specific orientation, be constructed or operate in a specific orientation, and therefore should not be understood as limitations on this specification.

[0023] A photovoltaic panel cleaning device according to an embodiment of the present specification is described in detail below with reference to the accompanying drawings. Figure 1 The schematic diagram of the structure of a photovoltaic panel cleaning device provided in an embodiment of the present specification is shown. A photovoltaic panel cleaning device in an embodiment of the present specification comprises: a housing, a driving mechanism, a walking mechanism and a cleaning mechanism 4: the driving mechanism, the walking mechanism and the cleaning mechanism 4 are all arranged in the housing; the driving mechanism comprises a first motor 21 and a second motor 22; the walking mechanism comprises an upper walking wheel group 31, a middle walking wheel group 32 and a lower walking wheel group 33 arranged at intervals along the length direction of the housing, one of the middle walking wheels in the middle walking wheel group 32 is connected to one of the upper walking wheels in the upper walking wheel group 31 through a first synchronous wheel shaft 34, and the other middle walking wheel in the middle walking wheel group 32 is connected to one of the upper walking wheels in the upper walking wheel group 31 through a first synchronous wheel shaft 34. The walking wheel is connected to one of the lower walking wheels in the lower walking wheel group 33 through the second synchronous wheel shaft 35; the first motor 21 drives the upper walking wheel group 31 and synchronously drives one of the middle walking wheels of the middle walking wheel group 32 through the first synchronous wheel shaft 34, and the second motor 22 drives the lower walking wheel group 33 and synchronously drives the other middle walking wheel of the middle walking wheel group 32 through the second synchronous wheel shaft 35, so that the photovoltaic panel cleaning equipment walks on the surface of the photovoltaic panel; the cleaning mechanism 4 is arranged on one side of the walking mechanism along the length direction of the shell and is used to clean the surface of the photovoltaic panel.

[0024] When there is a drop between adjacent photovoltaic panels, the travel mechanism can be driven and controlled by using different motors, and the upper travel wheel group 31 and the lower travel wheel group 33 respectively drive one of the middle travel wheels of the middle travel wheel group 32 to perform differential motion. When running from west to east, if the upper travel wheel group 31 passes the drop smoothly, and the lower travel wheel group 33 is stuck at the drop, the speed output by the second motor 22 is controlled to be greater than the speed output by the first motor 21, so that the lower travel wheel group 33 passes the drop; if the lower travel wheel group 33 passes the drop smoothly, and the upper travel wheel group 31 is stuck at the drop, the speed output by the first motor 21 is controlled to be greater than the speed output by the second motor 22, so that the upper travel wheel group 31 passes the drop. This ensures that the photovoltaic panel cleaning device will not be stuck due to a fault when there is a drop between adjacent photovoltaic panels, but will pass over the drop to maintain normal cleaning work. The upper end walking wheel set 31, the middle end walking wheel set 32 ​​and the lower end walking wheel set 33 are preferably each provided with two walking wheels. In addition, the cleaning mechanism 4 is composed of a plurality of cleaning roller brushes, each of which is driven by a separate motor to ensure that each of the cleaning roller brushes can obtain stable power output during the cleaning process, avoid a decrease in the cleaning effect due to uneven load, and prevent the failure of one of the motors or roller brushes from affecting the normal operation of other cleaning roller brushes, thereby improving the availability of the equipment.

[0025] In order to adapt to the increasing size of photovoltaic panels, an extended photovoltaic panel cleaning device is often used to clean the photovoltaic panels. However, the extended photovoltaic panel cleaning device is mostly a detachable multi-section structure. When the cleaning robot passes through a photovoltaic panel with a drop, due to factors such as jamming, tilting, and unstable disassembly connection points, the structure of the existing detachable and combinable extended photovoltaic panel cleaning device is not stable enough. It is easy to cause the extended photovoltaic panel cleaning device to produce unnecessary shaking when passing through the drop photovoltaic panel due to the unstable connection between the side cover and the single cover, thereby affecting the operation. When the photovoltaic panel cleaning device of the embodiment of this specification is an extended structure, in order to allow the photovoltaic panel cleaning device to pass through the drop smoothly, reduce the failure rate and the problem of unstable connection of the extended photovoltaic panel cleaning device, the shell includes a side cover 11 and a cover plate, the side cover 11 is arranged at both ends of the cover plate, the cover plate includes a plurality of single covers 12 connected end to end, and the side cover 11 and the plurality of single covers 12 connected end to end are connected by a connecting mechanism. The side cover 11 has two pieces, which are respectively located at the upper end and the lower end of the cover plate. There is no limit to the number of the single covers 12. Adjacent single covers 12 are fixedly connected by screws. The length of the cover plate is determined according to the size of the photovoltaic panel. The number of the single covers 12 can be adaptively changed according to the size of the photovoltaic panel. Since the size of the single cover 12 is fixed, if the size of the cover plate composed of several single covers 12 is too long relative to the size of the photovoltaic panel, the size of the cover plate can be controlled by cutting the two ends of the cover plate to the same size to meet the size of the photovoltaic panel. In order to ensure the stability of the photovoltaic panel cleaning device, the number of the single covers 12 is preferably 4. In order to solve the problem that the structure of the lengthened photovoltaic panel cleaning robot is not stable enough, the fixing of several single covers 12 is achieved by the connecting mechanism. The connecting mechanism includes a connecting rod 13 and a fixing plate 14 arranged at the adjacent positions of several single covers 12, and the fixing plate 14 is sleeved outside the connecting rod 13. The connecting rod 13 is arranged at intervals along the width direction of the shell at the bottom of the shell, and the head and tail ends of the connecting rod 13 are respectively connected to the two side covers 11. If the size of the cover plate has not been cut, the fixing plate 14 is arranged adjacent to several of the single covers 12. If the size of the cover plate has been cut, the fixing plates 14 are arranged in the shell at equal intervals along the length direction of the cover plate. A connecting hole matching the connecting rod 13 is provided at the bottom of each fixing plate 14, and the connecting rod 13 is passed through the connecting hole in turn, and the connection between the connecting rod 13 and the fixing plate 14 is fixed by a fastener. In order to control the weight of the photovoltaic panel cleaning device so as not to affect the operation too much, and at the same time ensure the fixity of the device, the number of the connecting rods 13 is preferably 3, and the fixing plates 14 are preferably 3.

[0026] The upper running wheel set 31 and the lower running wheel set 33 are respectively arranged on the side cover 11 located at the upper end of the cover plate and the side cover 11 at the upper end of the cover plate. The middle running wheel set 32 ​​is arranged on the fixing plate 14 located at half the length of the cover plate.

[0027] The connection points between the two ends of the connecting rod 13 and the two side covers 11 are also fixed by the fasteners. Wherein, the connection point between the connecting rod 13 and the fixing plate 14 at half the length of the cover plate is preferably provided with fasteners on both sides of the fixing plate 14, and the fasteners are bearing seats to prevent the force generated during the running of the middle-end walking wheel 32 from acting on the connecting rod 13 at this part, resulting in unstable fixation of the connecting rod 13. At the connection points between the connecting rod 13 and the fixing plate 14 at other places, fasteners are preferably provided on one side of the fixing plate 14.

[0028] The first synchronous wheel shaft 34 and the second synchronous wheel shaft 35 each include a driving shaft and a driven shaft, and the driving shaft and the driven shaft are connected to rotate synchronously via a coupling 36. The driving shaft is arranged close to the first motor 21 and the second motor 22, and the driven shaft is arranged close to the middle end walking wheel set 32. To ensure a better effect of transmitting motion and torque, the length of the driving shaft is greater than that of the driven shaft.

[0029] The walking mechanism is provided with a wheel power shaft; one side of the wheel power shaft of the upper walking wheel group 31 and the lower walking wheel group 33 is respectively connected to the motor shaft of the first motor 21 and the second motor 22; and sleeves are respectively provided on both sides of the wheel power shaft. Each walking wheel is a double-wheel structure, in which the wheel power shaft is provided. The two upper walking wheels of the upper walking wheel group 31 are respectively connected to the first motor 21, and the wheel power shafts of the two lower walking wheels of the lower walking wheel group 33 are respectively connected to the second motor 22. Sleeves are provided on the shafts on both sides of each wheel power shaft to reduce axial force and friction and correct axis center error. Tightening sleeves for tightening the sleeves are tightly provided on both sides of the sleeves.

[0030] The middle end running wheel set 32 ​​is fixed on both sides of the fixing plate 14 through the wheel power shaft. The wheel power shaft passes through the fixing plate 14 to fix the middle end running wheel set 32.

[0031] The fixing plates 14 are arranged in the shell at equal intervals along the length direction of the cover plate. The fixing plates 14 are connected to the cover plate through their bottom edges, so that the fixing plates 14 are perpendicular to the cover plate. The vertical distance between the bottom edge and the top edge of the fixing plates 14 is the height of the fixing plates 14. The height of the fixing plates 14 connected to the middle-end walking wheel set 32 ​​is higher than that of the other fixing plates 14. The fixing plates 14 here not only need to fix the connecting rod 13 at the bottom, but also need to fix the position of the middle-end walking wheel set 32 ​​at the top. One of the walking wheels of the double-wheel structure is fixed on one side of the fixing plate 14 here, and the other is fixed on the other side of the fixing plate 14 here, so the height of the fixing plates 14 here is lengthened, and the remaining fixing plates 14 do not need to be used to fix the walking wheels. The height of the remaining fixing plates 14 cannot be set too high to avoid affecting the connection between the walking wheels and the synchronous wheel shaft. The heights of the fixing plates 14 connected to the middle-end walking wheel set 32 ​​and other fixing plates 14 are lower than the height of the side cover 11.

[0032] The side covers 11 are each provided with a limiting guide wheel 111 for limiting the photovoltaic panel cleaning device on the photovoltaic panel, and the outer edges of the limiting guide wheel 111 are respectively engaged with the upper end and the lower end of the photovoltaic panel and move along the upper end and the lower end of the photovoltaic panel. The number of the limiting guide wheels 111 is preferably 4, and two are respectively provided on the side covers 11 at the upper end and the lower end of the photovoltaic cleaning device.

[0033] Although several specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of this specification. Certain features described in the context of separate embodiments may also be implemented in a single implementation in combination. Conversely, various features described in the context of a single implementation may also be implemented in multiple implementations individually or in any suitable sub-combination.

[0034] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

[0035] The embodiments of the present specification have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A photovoltaic panel cleaning device, comprising a housing, a driving mechanism, a walking mechanism and a cleaning mechanism (4), characterized in that: The driving mechanism, the walking mechanism and the cleaning mechanism (4) are all arranged in the housing; the driving mechanism comprises a first motor (21) and a second motor (22); the walking mechanism comprises an upper walking wheel group (31), a middle walking wheel group (32) and a lower walking wheel group (33) arranged at intervals along the length direction of the housing; one of the middle walking wheels in the middle walking wheel group (32) is connected to one of the upper walking wheels in the upper walking wheel group (31) via a first synchronous wheel shaft (34); another of the middle walking wheels in the middle walking wheel group (32) is connected to one of the lower walking wheels in the lower walking wheel group (33) via a first synchronous wheel shaft (34); The walking wheels are connected via a second synchronous wheel shaft (35); the first motor (21) drives the upper walking wheel group (31) and synchronously drives one of the middle walking wheels of the middle walking wheel group (32) via the first synchronous wheel shaft (34); the second motor (22) drives the lower walking wheel group (33) and synchronously drives another of the middle walking wheels of the middle walking wheel group (32) via the second synchronous wheel shaft (35), so that the photovoltaic panel cleaning device moves on the surface of the photovoltaic panel; the cleaning mechanism (4) is arranged on one side of the walking mechanism along the length direction of the shell and is used to clean the surface of the photovoltaic panel.

2. A photovoltaic panel cleaning device according to claim 1, characterized in that: The housing comprises a side cover (11) and a cover plate, wherein the side cover (11) is arranged at both ends of the cover plate; the cover plate comprises a plurality of single covers (12) connected end to end; and the side cover (11) and the plurality of single covers (12) connected end to end are connected via a connecting mechanism.

3. A photovoltaic panel cleaning device according to claim 2, characterized in that: The connection mechanism comprises a connection rod (13) and a fixing plate (14) arranged adjacent to a plurality of the single covers (12), wherein the fixing plate (14) is sleeved outside the connection rod (13).

4. A photovoltaic panel cleaning device according to claim 3, characterized in that: A fastener is provided at the connection between the connecting rod (13) and the fixing plate (14).

5. A photovoltaic panel cleaning device according to claim 1, characterized in that: The first synchronous wheel shaft (34) and the second synchronous wheel shaft (35) both comprise a driving shaft and a driven shaft, and the driving shaft and the driven shaft are connected via a coupling (36) to rotate synchronously.

6. A photovoltaic panel cleaning device according to claim 4, characterized in that: A wheel power shaft is provided in the walking mechanism; one side of the wheel power shaft of the upper walking wheel set (31) and the lower walking wheel set (33) is connected to the motor shafts of the first motor (21) and the second motor (22), respectively.

7. A photovoltaic panel cleaning device according to claim 6, characterized in that: Shaft sleeves are respectively arranged on both sides of the wheel power shaft, and fastening shaft sleeves for fastening the shaft sleeves are arranged on both sides of the shaft sleeves.

8. A photovoltaic panel cleaning device according to claim 6, characterized in that: The middle end running wheel set (32) is fixed to both sides of the fixing plate (14) via the wheel power shaft.

9. A photovoltaic panel cleaning device according to claim 8, characterized in that: The fixing plate (14) connected to the middle-end running wheel set (32) is higher in height than the other fixing plates (14) in a direction perpendicular to the length of the shell.

10. A photovoltaic panel cleaning device according to claim 2, characterized in that: The side covers (11) are provided with limiting guide wheels (111) for limiting the photovoltaic panel cleaning device on the photovoltaic panel, and the outer edges of the limiting guide wheels (111) are respectively engaged with the upper end and the lower end of the photovoltaic panel and move along the upper end and the lower end of the photovoltaic panel.

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