Computer network monitoring equipment

Abstract

The invention discloses computer network monitoring equipment, which comprises a shell, four rollers are rotatably mounted at the bottom of the shell, a push handle is fixedly mounted on one side of the shell, a sliding hole is formed in the top of the shell, and a plurality of temperature sensors and humidity sensors are fixedly mounted on the outer surface of the shell; the dustproof mechanism is used for preventing dust from influencing the accuracy of data monitored by the sensor; and the dustproof mechanism comprises a supporting column, the supporting column is slidably installed on the inner surface of the sliding hole, the bottom of the supporting column is in threaded connection with a threaded rod, and one end of the threaded rod is fixedly connected with a second motor. A ventilation hood at the top of a supporting column is driven by a second motor to completely slide to the top of the shell, during working, air in an inner cavity of the shell is blown to an inner cavity of the ventilation hood through a ventilation pipe and an air outlet pipeline by a first fan, and air flow in the inner cavity of the ventilation hood can dissipate heat of the first motor and the monitor; and the monitor is driven by the output shaft of the first motor to rotate, so that omnibearing monitoring in the machine room can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of monitoring devices, and specifically to a computer network monitoring device. Background Art

[0002] A typical monitoring system usually consists of two major parts: front-end and back-end devices. The front-end devices include core components such as cameras, adjustable lenses, pan-tilt heads, protective enclosures, microphones, alarm detectors, and multi-functional decoders. These devices are linked with the back-end control center through transmission media such as wired, wireless, or fiber optic.

[0003] After retrieval, a patent document with the publication number CN113915475A discloses a computer network monitoring device, which includes a cylindrical rod and a sensor slot I. Inside the cylindrical rod, multiple sensor slots I, a top cover, and a vertical rod are arranged from top to bottom. The lower side of the top cover is fixedly connected to the vertical rod, and multiple sensor slots I are arranged on the vertical rod from top to bottom. The top cover covers the upper side of the cylindrical rod. A rectangular frame, a wheel shaft, rubber wheels, and an H-shaped frame are provided. H-shaped frames are arranged at both the left and right ends of the rectangular frame. A wheel shaft is rotatably connected to the lower part of each H-shaped frame, and rubber wheels are fixedly connected to the front and rear ends of the wheel shaft. Each rubber wheel presses against the outer circumference of the cylindrical rod. The wheel shaft is driven to rotate by a servo motor I, and the H-shaped frame is slidably connected to the rectangular frame in the left-right direction.

[0004] During use, sensors are installed in the sensor slots. By rolling the rubber wheels on the outer surface of the cylindrical rod, the height of the rectangular frame can be adjusted, so that the sensors on the monitoring device can perform monitoring work at different heights. However, when this monitoring device is working, the monitoring components are still in an exposed state, and the surface of the monitoring components is easily contaminated with dust, and the accumulation of dust will affect the accuracy of the sensor detection data.

[0005] Therefore, in view of the above problems, a computer network monitoring device is proposed. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve the problem that the monitoring components are in an exposed state and the surface of the monitoring components is easily contaminated with dust, affecting the monitoring effect, a computer network monitoring device proposed by the present invention includes a housing. Four rollers are rotatably installed at the bottom of the housing. A push handle is fixedly installed on one side of the housing. A sliding hole is opened at the top of the housing. A number of temperature sensors and humidity sensors are fixedly installed on the outer surface of the housing;

[0007] It also includes a dust-proof mechanism for preventing dust from affecting the accuracy of the sensor monitoring data;

[0008] The dust-proof mechanism includes support columns, which are slidably installed on the inner surface of the sliding holes. A threaded rod is threadedly connected to the bottom of the support column. One end of the threaded rod is fixedly connected to a second motor, and the second motor is fixedly installed on the inner wall of the housing. A first motor is fixedly installed on the top of the support column. The output shaft of the first motor is fixedly connected to a mounting block, and a monitor is fixedly installed in the inner cavity of the mounting block. A ventilation hood is fixedly connected to the top of the support column.

[0009] Preferably, an air outlet duct is provided at the top of the support column. A ventilation pipe is fixedly connected to one side of the air outlet duct, and a first fan is fixedly installed on the inner wall of the ventilation pipe.

[0010] Preferably, two limiting rings are fixedly installed at the bottom of the support column. A threaded hole is provided at the bottom of the support column, and the threaded rod is threadedly installed on the inner surface of the threaded hole. Two limiting posts are fixedly installed on the inner wall of the housing, and the two limiting posts are respectively slidably installed on the inner surfaces of the two limiting rings.

[0011] Preferably, a first rack is fixedly connected to one side of the limiting ring. Two first connecting rods are fixedly installed on the outer surface of the limiting post. A first gear is rotatably installed on the common opposite surface of the two first connecting rods, and the first gear meshes with the first rack.

[0012] Preferably, a mounting plate is fixedly installed on the inner wall of the housing. A second rack is slidably installed on the inner wall of the mounting plate. The second rack meshes with the first gear, and an alarm is fixedly installed at the bottom of the second rack.

[0013] Preferably, a first ventilation hole and a second ventilation hole are provided on the outer surface of the housing. A cover is rotatably installed on the outer surface of the housing. An air inlet groove is fixedly installed on the inner surface of the second ventilation hole. An air inlet pipe is fixedly installed on the inner wall of the housing. A second fan is fixedly installed on the inner wall of the air inlet pipe. A second connecting rod is fixedly connected to one side of the second fan. One end of the second connecting rod penetrates through the air inlet groove and is fixedly connected to a dust removal plate, and the dust removal plate is rotatably installed on one side of the air inlet groove.

[0014] Preferably, a second installation groove, a first installation groove and a dust collection groove are provided on the top of the housing. A second gear is rotatably installed on the inner surface of the first installation groove, and a scraper is fixedly installed on the top of the second gear.

[0015] Preferably, a third gear is rotatably installed on the inner surface of the second installation groove. The third gear meshes with the second gear. A third motor is fixedly installed on the top of the third gear, and a mounting bracket is fixedly installed on the top of the third motor. The mounting bracket is fixedly installed on the top of the housing.

[0016] A computer network monitoring device includes.

[0017] The advantages of the present invention are as follows:

[0018] 1. By means of the hand-held push handle, the present invention can drive the roller to rotate, thereby realizing the driving of the monitoring device. After moving the monitoring device to a predetermined location, the output shaft of the second motor drives the threaded rod to rotate on the inner surface of the threaded hole, and at the same time, the two limit posts slide on the inner surfaces of the two limit rings to play a role in limiting the support column. At this time, the ventilation hood at the top of the support column completely slides to the top of the housing. During operation, the first fan blows the air in the inner cavity of the housing through the ventilation pipe and the air outlet duct into the inner cavity of the ventilation hood, and the air flow in the inner cavity of the ventilation hood can dissipate heat from the first motor and the monitor. By driving the monitor to rotate with the output shaft of the first motor, all-round monitoring of the computer room can be realized.

[0019] 2. During the up-and-down movement of the support column, the present invention drives the limit ring and the first rack to move synchronously. The first rack drives the first gear to rotate, and the first gear further drives the second rack to slide along the mounting plate. During this process, the second rack brings the alarm to the bottom of the housing. When the temperature sensor and the humidity sensor detect that the data in the computer room exceeds the preset data, an alarm is issued to remind the staff. When in use, it is also necessary to ensure the air flow and cleanliness in the inner cavity of the housing. When in use, the second fan sucks the external air into the inner cavity of the housing, and at the same time, the air inlet groove can filter the air entering the inner cavity of the housing, blocking dust and impurities on the outer surface of the air inlet groove. In order to prevent dust from blocking the air inlet groove, when in use, the second fan will also drive the dust removal plate to rotate through the second connecting rod to clean the dust on the outer surface of the air inlet groove, thereby maintaining the cleanliness of the air entering the inner cavity of the housing.

[0020] 3. The output shaft of the third motor drives the third gear to rotate, and the third gear further drives the second gear to rotate. The second gear drives the scraper to rotate, enabling the scraper to clean the outer surface of the ventilation hood, so as to provide better monitoring conditions for the monitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the support column structure of an embodiment of the present invention;

[0024] Figure 3Schematic diagram of the internal structure of the housing according to an embodiment of the present invention;

[0025] Figure 4 Schematic diagram of the first gear connection structure according to an embodiment of the present invention;

[0026] Figure 5 Schematic diagram of the installation structure of the air inlet pipe according to an embodiment of the present invention;

[0027] Figure 6 Schematic diagram of the top structure of the housing according to an embodiment of the present invention.

[0028] In the figure: 1. Housing; 101. Temperature sensor; 102. Humidity sensor; 11. Roller; 12. First ventilation hole; 13. Cover; 14. Push handle; 15. Second ventilation hole; 16. Slide hole; 2. Support column; 21. Limit ring; 210. Threaded hole; 211. Limit post; 212. Threaded rod; 213. Second motor; 22. Ventilation pipe; 23. First fan; 24. Air outlet duct; 25. First motor; 26. Installation block; 27. Monitor; 28. Ventilation hood; 3. First rack; 31. First connecting rod; 32. First gear; 33. Installation plate; 34. Second rack; 35. Alarm; 4. Air inlet pipe; 41. Air inlet groove; 42. Second fan; 43. Second connecting rod; 44. Dust removal plate; 5. Ash collection tank; 51. First installation groove; 52. Second installation groove; 53. Second gear; 54. Third gear; 55. Third motor; 56. Installation frame; 57. Scraper. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1 to 6As shown in the figure, a computer network monitoring device includes a housing 1. Four rollers 11 are rotatably installed at the bottom of the housing 1. A push handle 14 is fixedly installed on one side of the housing 1. A sliding hole 16 is formed at the top of the housing 1. A plurality of temperature sensors 101 and humidity sensors 102 are fixedly installed on the outer surface of the housing 1. It further includes a dust-proof mechanism for preventing dust from affecting the accuracy of sensor monitoring data. The dust-proof mechanism includes a support column 2. The support column 2 is slidably installed on the inner surface of the sliding hole 16. A threaded rod 212 is threadedly connected to the bottom of the support column 2. One end of the threaded rod 212 is fixedly connected to a second motor 213. The second motor 213 is fixedly installed on the inner wall of the housing 1. A first motor 25 is fixedly installed at the top of the support column 2. The output shaft of the first motor 25 is fixedly connected to a mounting block 26. A monitor 27 is fixedly installed in the inner cavity of the mounting block 26. The top of the support column 2 is fixedly connected to a ventilation hood 28.

[0031] During the process of monitoring a computer room, not only the temperature and humidity in the computer room need to be detected, but also the situation in the computer room needs to be recorded through a camera device. The surface of existing monitoring devices is prone to dust accumulation, which affects the monitoring quality.

[0032] When the present invention is in use, first, the staff can push the entire monitoring device by holding the push handle 14 to move the monitoring device to a suitable position for monitoring and recording the situation in the computer room. When in use, first, the output shaft of the second motor 213 drives the threaded rod 212 to rotate, and the threaded rod 212 drives the support column 2 to slide upward. When the ventilation hood 28 is completely exposed on the top of the housing 1, the monitor 27 can record the situation in the computer room through the ventilation hood 28, thereby achieving the purpose of monitoring. The ventilation hood 28 can block dust from contacting the monitor 27, achieving the purpose of cleaning the monitor 27. When in use, the output shaft of the first motor 25 drives the mounting block 26 to rotate, and the mounting block 26 further drives the monitor 27 to perform a circular motion to achieve the purpose of comprehensively monitoring the entire computer room. The temperature sensor 101 and humidity sensor 102 can respectively monitor other data in the computer room.

[0033] Further, as Figure 2 shown, an air outlet duct 24 is formed at the top of the support column 2. A ventilation pipe 22 is fixedly connected to one side of the air outlet duct 24. A first fan 23 is fixedly installed on the inner wall of the ventilation pipe 22.

[0034] When the present invention is in use, the first fan 23 blows the air in the inner cavity of the housing 1 into the inner cavity of the ventilation hood 28 through the ventilation pipe 22 and the air outlet duct 24, so that the air in the inner cavity of the ventilation hood 28 circulates, and finally the air passes through the ventilation hood 28 and flows to the outside. This process can dissipate heat from the first motor 25 and the monitor 27.

[0035] Further, as Figure 3 shown, two limiting rings 21 are fixedly installed at the bottom of the support column 2, a threaded hole 210 is formed in the bottom of the support column 2, the threaded rod 212 is threadedly installed on the inner surface of the threaded hole 210, two limiting posts 211 are fixedly installed on the inner wall of the housing 1, and the two limiting posts 211 are respectively slidably installed on the inner surfaces of the two limiting rings 21.

[0036] When the present invention is in use, the threaded rod 212 rotates on the inner surface of the threaded hole 210, and the two limiting posts 211 respectively slide on the inner surfaces of the two limiting rings 21 to play a limiting role.

[0037] Further, as Figure 4 shown, a first rack 3 is fixedly connected to one side of the limiting ring 21, two first connecting rods 31 are fixedly installed on the outer surface of the limiting post 211, a first gear 32 is rotatably installed on the common opposite surface of the two first connecting rods 31, and the first gear 32 meshes with the first rack 3;

[0038] An installation plate 33 is fixedly installed on the inner wall of the housing 1, a second rack 34 is slidably installed on the inner wall of the installation plate 33, the second rack 34 meshes with the first gear 32, and an alarm 35 is fixedly installed at the bottom of the second rack 34.

[0039] When the present invention is in use, during the upward movement of the support column 2, the support column 2 will drive the first rack 3 to move upward. The first rack 3 meshes with the first gear 32 to drive the first gear 32 to rotate, and the first gear 32 meshes with the installation plate 33 to drive the second rack 34 to slide along the inner surface of the installation plate 33. When the support column 2 slides upward, the second rack 34 slides downward to drive the alarm 35 to slide down to the bottom of the housing 1. When the temperature sensor 101 and the humidity sensor 102 detect that the data in the computer room exceeds or is lower than the preset data range, an alarm is issued. When the alarm 35 and the monitor 27 are used synchronously, the alarm 35 will only be exposed from the inner cavity of the housing 1 when the monitor 27 is in use, playing a role in protecting the alarm 35.

[0040] Further, as Figure 5 shown, a first ventilation hole 12 and a second ventilation hole 15 are formed on the outer surface of the housing 1, a cover 13 is rotatably installed on the outer surface of the housing 1, an air inlet groove 41 is fixedly installed on the inner surface of the second ventilation hole 15, an air inlet pipe 4 is fixedly installed on the inner wall of the housing 1, a second fan 42 is fixedly installed on the inner wall of the air inlet pipe 4, a second connecting rod 43 is fixedly connected to one side of the second fan 42, one end of the second connecting rod 43 penetrates through the air inlet groove 41 and is fixedly connected to a dust removal plate 44, and the dust removal plate 44 is rotatably installed on one side of the air inlet groove 41.

[0041] When the present invention is in use, the second fan 42 sucks the air outside the housing 1 into the inner cavity of the housing 1. During this process, the outside air will first pass through the air inlet groove 41, and the dust and impurities in the air will be blocked on the outer surface of the air inlet groove 41. In order to prevent the dust and impurities from blocking the air inlet groove 41, when the second fan 42 is working, the second fan 42 will drive the dust removal plate 44 to rotate through the second connecting rod 43. The scraping of the dust removal plate 44 on the outer surface of the air inlet groove 41 can scrape off the dust on the outer surface of the air inlet groove 41, thereby avoiding the problem of the air inlet groove 41 being blocked. When in use, the second fan 42 causes the air flow in the inner cavity of the housing 1, and the flowing air will blow up the baffle 13 through the first ventilation hole 12, and then discharge the air in the inner cavity of the housing 1 through the first ventilation hole 12. When the second fan 42 is not in use, due to the gravity, the baffle 13 will rotate close to the housing 1 and block the first ventilation hole 12, preventing the dust from entering the inner cavity of the housing 1 through the first ventilation hole 12.

[0042] Further, as Figure 6 shown, a second installation groove 52, a first installation groove 51 and an ash collecting groove 5 are formed in the top of the housing 1. A second gear 53 is rotatably installed on the inner surface of the first installation groove 51, and a scraping plate 57 is fixedly installed on the top of the second gear 53;

[0043] A third gear 54 is rotatably installed on the inner surface of the second installation groove 52. The third gear 54 meshes with the second gear 53. A third motor 55 is fixedly installed on the top of the third gear 54, and a mounting bracket 56 is fixedly installed on the top of the third motor 55. The mounting bracket 56 is fixedly installed on the top of the housing 1.

[0044] When the present invention is in use, in order to ensure the monitoring effect of the monitor 27, it is also necessary to clean the outer surface of the ventilation hood 28 to keep the outer surface of the ventilation hood 28 clean. When in use, the output shaft of the third motor 55 drives the third gear 54 to rotate. The third gear 54 meshes with the second gear 53, and then the second gear 53 will also rotate. When the second gear 53 rotates, it will drive the scraping plate 57 to scrape on the outer surface of the ventilation hood 28, and due to the shape design of the scraping plate 57, the dust can be scraped into the ash collecting groove 5, which is convenient for the staff to collect the dust later. When in use, during the upward and downward movement of the ventilation hood 28, the scraping plate 57 can clean the entire outer surface of the ventilation hood 28.

[0045] Working principle: When in use, the operator holds the push handle 14 by hand to drive the roller 11 to rotate, thereby realizing the driving of the monitoring device. After moving the monitoring device to a predetermined location, the output shaft of the second motor 213 drives the threaded rod 212 to rotate on the inner surface of the threaded hole 210, and at the same time, the two limit posts 211 slide on the inner surfaces of the two limit rings 21 to play a role in limiting the support column 2. At this time, the ventilation hood 28 at the top of the support column 2 completely slides to the top of the housing 1. During operation, the first fan 23 blows the air in the inner cavity of the housing 1 through the ventilation pipe 22 and the air outlet duct 24 into the inner cavity of the ventilation hood 28. The air flow in the inner cavity of the ventilation hood 28 can dissipate heat from the first motor 25 and the monitor 27. The rotation of the monitor 27 driven by the output shaft of the first motor 25 can realize the all-round monitoring of the computer room.

[0046] When in use, during the up and down movement of the support column 2, it will drive the limit ring 21 and the first rack 3 to move synchronously. The first rack 3 drives the first gear 32 to rotate, and the first gear 32 further drives the second rack 34 to slide along the mounting plate 33. During this process, the second rack 34 brings the alarm 35 to the bottom of the housing 1. When the temperature sensor 101 and the humidity sensor 102 detect that the data in the computer room exceeds the preset data, an alarm is issued to remind the staff. When in use, it is also necessary to ensure the air flow and cleanliness in the inner cavity of the housing 1. When in use, the second fan 42 sucks the external air into the inner cavity of the housing 1, and at the same time, the air inlet groove 41 can filter the air entering the inner cavity of the housing 1, blocking the dust and impurities on the outer surface of the air inlet groove 41. In order to prevent the air inlet groove 41 from being blocked by dust, when in use, the second fan 42 will also drive the dust removal plate 44 to rotate through the second connecting rod 43 to clean the dust on the outer surface of the air inlet groove 41, thereby maintaining the cleanliness of the air entering the inner cavity of the housing 1. The rotation of the third gear 54 driven by the output shaft of the third motor 55 further drives the second gear 53 to rotate, and the rotation of the second gear 53 drives the scraper 57 to rotate, enabling the scraper 57 to clean the outer surface of the ventilation hood 28, so as to provide better monitoring conditions for the monitor 27.

[0047] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0048] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all such changes and improvements fall within the scope of the present invention claimed.

Claims

1. A computer network monitoring device, comprising a housing (1). Four rollers (11) are rotatably installed at the bottom of the housing (1). A push handle (14) is fixedly installed on one side of the housing (1). A sliding hole (16) is formed at the top of the housing (1). A plurality of temperature sensors (101) and humidity sensors (102) are fixedly installed on the outer surface of the housing (1). It further includes a dust-proof mechanism for preventing dust from affecting the accuracy of the sensor monitoring data. It is characterized in that: The dust-proof mechanism includes a support column (2). The support column (2) is slidably installed on the inner surface of the sliding hole (16). A threaded rod (212) is threadedly connected to the bottom of the support column (2). One end of the threaded rod (212) is fixedly connected to a second motor (213). The second motor (213) is fixedly installed on the inner wall of the housing (1). A first motor (25) is fixedly installed at the top of the support column (2). An output shaft of the first motor (25) is fixedly connected to a mounting block (26). A monitor (27) is fixedly installed in the inner cavity of the mounting block (26). A ventilation hood (28) is fixedly connected to the top of the support column (2).

2. The computer network monitoring device according to claim 1, characterized in that: An air outlet duct (24) is formed at the top of the support column (2). A ventilation pipe (22) is fixedly connected to one side of the air outlet duct (24). A first fan (23) is fixedly installed on the inner wall of the ventilation pipe (22).

3. The computer network monitoring device according to claim 2, characterized in that: Two limit rings (21) are fixedly installed at the bottom of the support column (2). A threaded hole (210) is formed at the bottom of the support column (2). The threaded rod (212) is threadedly installed on the inner surface of the threaded hole (210). Two limit posts (211) are fixedly installed on the inner wall of the housing (1). The two limit posts (211) are respectively slidably installed on the inner surfaces of the two limit rings (21).

4. The computer network monitoring device according to claim 3, wherein: A first rack (3) is fixedly connected to one side of the limit ring (21). Two first connecting rods (31) are fixedly installed on the outer surface of the limit post (211). A first gear (32) is rotatably installed on the common opposite surface of the two first connecting rods (31). The first gear (32) meshes with the first rack (3).

5. A computer network monitoring device according to claim 4, characterized in that: A mounting plate (33) is fixedly installed on the inner wall of the housing (1). A second rack (34) is slidably installed on the inner wall of the mounting plate (33). The second rack (34) meshes with the first gear (32). An alarm (35) is fixedly installed at the bottom of the second rack (34).

6. The computer network monitoring device according to claim 5, wherein: A first ventilation hole (12) and a second ventilation hole (15) are formed on the outer surface of the housing (1). A cover (13) is rotatably installed on the outer surface of the housing (1). An air inlet groove (41) is fixedly installed on the inner surface of the second ventilation hole (15). An air inlet pipe (4) is fixedly installed on the inner wall of the housing (1). A second fan (42) is fixedly installed on the inner wall of the air inlet pipe (4). A second connecting rod (43) is fixedly connected to one side of the second fan (42). One end of the second connecting rod (43) penetrates through the air inlet groove (41) and is fixedly connected to a dust removal plate (44). The dust removal plate (44) is rotatably installed on one side of the air inlet groove (41).

7. A computer network monitoring device according to claim 6, characterized in that: A second installation groove (52), a first installation groove (51) and an ash collecting groove (5) are formed at the top of the housing (1). A second gear (53) is rotatably installed on the inner surface of the first installation groove (51), and a scraping plate (57) is fixedly installed at the top of the second gear (53).

8. A computer network monitoring device according to claim 7, characterized in that: A third gear (54) is rotatably installed on the inner surface of the second installation groove (52). The third gear (54) meshes with the second gear (53). A third motor (55) is fixedly installed at the top of the third gear (54), and a mounting bracket (56) is fixedly installed at the top of the third motor (55). The mounting bracket (56) is fixedly installed on the top of the housing (1).

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