Siltation information acquisition equipment for silt dam

Abstract

The utility model relates to the technical field of information acquisition of a silt dam, and discloses silt dam siltation information acquisition equipment, which comprises an unmanned aerial vehicle, a laser range finder is fixedly mounted on the front side of a body of the unmanned aerial vehicle through a U-shaped fixing seat, and a digital river network analyzer, a slope analyzer, a channel analyzer and a data memory are sequentially carried on the unmanned aerial vehicle. A three-dimensional laser scanner is further carried at the bottom of the body of the unmanned aerial vehicle; a controller is fixedly mounted at the top of the body of the unmanned aerial vehicle; the system further comprises a ground receiving device used in cooperation with the unmanned aerial vehicle. According to the utility model, the three-dimensional laser scanner can carry out three-dimensional scanning on the terrain of the silt dam in an air route during aerial photography, three-dimensional terrain data are established in the three-dimensional laser scanner, and the three-dimensional laser scanner can send the three-dimensional terrain data of the silt dam established in the three-dimensional laser scanner to a display in the ground receiving device. And various topographic data of the silt dam can be deeply analyzed through the data analyzer.

Description

Technical Field

[0001] The utility model relates to the technical field of information collection of silt dams, in particular to a device for collecting siltation information of silt dams. Background Art

[0002] The existing Chinese utility model patent with announcement number CN 208937029 U discloses a device for investigating the siltation condition of a silt dam, including: an aerial photography sub-device and a ground processing sub-device, wherein the aerial photography sub-device includes: photographic equipment, a laser rangefinder, a flying satellite locator, and a DEM data obtainer, a digital river network analyzer, a river channel and dam site analyzer, a storage and real-time transmission device, which are carried on a drone and connected to each other, and the ground processing sub-device includes a DEM data downloader and an in-depth analyzer.

[0003] The patent document uses aerial photography to construct digital terrain, analyzes areas where silt dams may appear, determines whether there are silt dams, and uses digital terrain to analyze the locations of silt dams, and ultimately determines the size and siltation range of the silt dams. Aerial photography can save a lot of manpower and material resources, and can build digital models of thousands of silt dams at the lowest cost, and can quickly determine the location and other parameters of the silt dams.

[0004] However, the patent document still has certain technical defects. For example, when the drone flies above the silt dam to collect siltation information of the silt dam, it is unable to perform three-dimensional terrain scanning of the slopes, ditches, etc. of the silt dam. Three-dimensional terrain scanning is the most direct way for management personnel to obtain siltation information of the silt dam.

[0005] Based on this, a device for collecting siltation information of a silt dam is now needed. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the shortcomings of the prior art, the utility model provides a siltation information collection device for a siltation dam to solve the problem raised in the background technology: when the drone flies above the siltation dam to collect the siltation information of the siltation dam, it is unable to perform three-dimensional terrain scanning of the slope, ditch, etc. of the siltation dam.

[0008] (II) Technical solution

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A device for collecting siltation information of a siltation dam comprises a drone, a laser rangefinder is fixedly mounted on the front side of the drone body through a U-shaped fixing seat, and the drone is also equipped with a digital river network analyzer, a slope analyzer, a channel analyzer and a data storage device in sequence, and a three-dimensional laser scanner is also carried on the bottom of the drone body, the three-dimensional laser scanner is arranged on the rear side of the laser rangefinder, and the three-dimensional laser scanner and the laser rangefinder are staggered with each other;

[0011] A controller is fixedly installed on the top of the UAV body, the three-dimensional laser scanner and the laser rangefinder are electrically connected to the controller through wires, and the digital river network analyzer, the slope analyzer and the channel analyzer are electrically connected to the controller through wires;

[0012] The digital river network analyzer, the slope analyzer and the channel analyzer are electrically connected to the data storage device through wires respectively;

[0013] It also includes a ground receiving device used in conjunction with the drone, the ground receiving device has a display capable of displaying the topography of the silt dam scanned by a three-dimensional laser scanner and a data analyzer, and the display is communicatively connected to the data analyzer.

[0014] Preferably, the controller has a central processing unit, which can process the data sent by the three-dimensional laser scanner, laser rangefinder, digital river network analyzer, slope analyzer and channel analyzer.

[0015] Preferably, the central processing unit has a wireless transceiver unit a, the display has a wireless transceiver unit b, and the wireless transceiver unit a is communicatively connected with the wireless transceiver unit b.

[0016] Preferably, the central processing unit is a DSP controller or a single chip microcomputer.

[0017] Preferably, the wireless transceiver unit a and the wireless transceiver unit b are both LoRa wireless transceiver modules with wireless communication protocol.

[0018] Preferably, the data analyzer is connected to the controller via a wireless transceiver unit b.

[0019] Preferably, the drone has four legs, and each of the legs is equipped with a supporting component.

[0020] Preferably, each group of the supporting components includes a support rod, which is fixedly installed at the edge of the lower surface of the drone foot, and a support plate is fixedly installed at the bottom end of the support rod, and the outer side of the support plate extends outward, wherein the support rod and the support plate are L-shaped.

[0021] Preferably, each group of the supporting components further includes a rubber buffer pad, which is bonded and mounted on the lower surface of the support plate, and the shape of the rubber buffer pad matches that of the support plate.

[0022] (III) Beneficial effects

[0023] The utility model provides a device for collecting siltation information of a siltation dam, which has the following beneficial effects:

[0024] 1. In the present invention, the 3D laser scanner mounted on the bottom of the drone body can perform 3D scanning of the terrain of the silt dam in the route during aerial photography, and establish 3D terrain data in the 3D laser scanner. After the 3D laser scanner completes the establishment of the 3D terrain data inside, it can transmit the 3D terrain data to the controller in real time, and the controller performs data processing. Since the ground receiving device can cooperate with the drone on the ground, the 3D laser scanner can send the 3D terrain data of the silt dam established inside to the display in the ground receiving device, and can perform in-depth analysis of various terrain data of the silt dam through the data analyzer;

[0025] Second, in the utility model, since the laser rangefinder is installed on the front side of the drone body through the U-shaped fixing seat, during the navigation of the drone, the laser rangefinder can be used to measure the actual height of the ground being photographed by the drone, or directly obtain the elevation change of the ground, and transmit the data to the controller in real time. After the controller performs data processing, the controller can combine the three-dimensional terrain data of the three-dimensional laser scanner with the elevation change data obtained by the laser rangefinder, thereby improving the three-dimensional terrain data of the silt dam;

[0026] 3. In the present invention, the river network information of the silt dam can be analyzed under the action of the digital river network analyzer, the slope information of the silt dam can be analyzed under the action of the slope analyzer, and the channel information of the silt dam can be analyzed under the action of the channel analyzer. The digital river network analyzer, the slope analyzer and the channel analyzer can transmit the acquired data to the controller and can also transmit the data to the data storage device to realize real-time backup;

[0027] Fourth, in the present invention, since the digital river network analyzer, the slope analyzer and the channel analyzer transmit data to the controller, the three-dimensional terrain data of the silt dam received inside the controller is more complete and comprehensive;

[0028] 5. In the present invention, since the digital river network analyzer, slope analyzer and channel analyzer are all connected to the controller, the display in the ground receiving device can also display the river network information, slope information and channel information of the silt dam in real time, and the ground technicians monitoring at the ground receiving device can grasp various information of the silt dam in real time, such as river network information, slope information and channel information. When the ground technicians obtain the relevant information of the silt dam, it can be beneficial to the comprehensive management of the silt dam;

[0029] 6. In the present utility model, the UAV can realize data intercommunication and real-time data transmission through the communication connection between the wireless transceiver unit a and the wireless transceiver unit b;

[0030] 7. In the present invention, when the data analyzer is connected to the controller via the wireless transceiver unit b, the data analyzer can perform in-depth analysis on the data of the three-dimensional laser scanner, the laser rangefinder, the digital river network analyzer, the slope analyzer and the channel analyzer, and can display the analysis results on the display;

[0031] 8. In the present utility model, under the action of the supporting component, support can be provided when the drone lands;

[0032] 9. In the present invention, since the support rod and the support plate are L-shaped and the outer side of the support plate extends outward, when the drone lands, it can avoid damage to its wings due to direct contact with the ground;

[0033] 10. In the present invention, under the action of the rubber cushion, the drone can be cushioned and shock-absorbed when landing, so that the contact state between the drone and the ground is transformed from rigid contact to flexible contact;

[0034] 11. In the present invention, the rubber buffer pad can also be replaced with a silicone pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a module block diagram of the utility model;

[0036] Figure 2 This is a module block diagram of the controller of the utility model;

[0037] Figure 3 A three-dimensional schematic diagram of the UAV of the utility model;

[0038] Figure 4 It is a three-dimensional schematic diagram of the UAV of the utility model when viewed from above.

[0039] In the figure: 100, unmanned aerial vehicle; 110, supporting component; 1110, support rod; 1120, support plate; 1130, rubber buffer pad; 200, three-dimensional laser scanner; 300, laser rangefinder; 400, controller; 410, central processing unit; 420, wireless transceiver unit a; 500, digital river network analyzer; 600, slope analyzer; 700, channel analyzer; 800, data storage device; 900, ground receiving device; 910, display; 920, wireless transceiver unit b; 930, data analyzer. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] Embodiment 1

[0042] The existing Chinese utility model patent with announcement number CN 208937029 U discloses a device for investigating the siltation condition of a silt dam.

[0043] The patent document uses aerial photography to construct digital terrain, analyzes areas where silt dams may appear, determines whether there are silt dams, and uses digital terrain to analyze the locations of silt dams, and ultimately determines the size and siltation range of the silt dams. Aerial photography can save a lot of manpower and material resources, and can build digital models of thousands of silt dams at the lowest cost, and can quickly determine the location and other parameters of the silt dams.

[0044] However, the patent document still has certain technical defects. For example, when the drone flies above the silt dam to collect siltation information of the silt dam, it is unable to perform three-dimensional terrain scanning of the slopes, ditches, etc. of the silt dam. Three-dimensional terrain scanning is the most direct way for management personnel to obtain siltation information of the silt dam.

[0045] Based on this, in order to solve the above technical problems, the inventors have adopted the following technical solutions, which are as follows:

[0046] like Figure 1-4 As shown, the utility model provides a technical solution:

[0047] A device for collecting siltation information of a siltation dam comprises an unmanned aerial vehicle 100, a laser rangefinder 300 is fixedly mounted on the front side of the drone 100 through a U-shaped fixing seat, and the unmanned aerial vehicle 100 is also equipped with a digital river network analyzer 500, a slope analyzer 600, a channel analyzer 700 and a data storage device 800 in sequence, and a three-dimensional laser scanner 200 is also carried at the bottom of the drone 100, the three-dimensional laser scanner 200 is arranged at the rear side of the laser rangefinder 300, and the three-dimensional laser scanner 200 and the laser rangefinder 300 are staggered with each other;

[0048] A controller 400 is fixedly installed on the top of the body of the drone 100, the three-dimensional laser scanner 200 and the laser rangefinder 300 are electrically connected to the controller 400 through wires, and the digital river network analyzer 500, the slope analyzer 600 and the channel analyzer 700 are electrically connected to the controller 400 through wires;

[0049] The digital river network analyzer 500, the slope analyzer 600 and the channel analyzer 700 are electrically connected to the data storage 800 through wires respectively;

[0050] It also includes a ground receiving device 900 used in conjunction with the drone 100. The ground receiving device 900 has a display 910 and a data analyzer 930 that can display the terrain of the silt dam scanned by the three-dimensional laser scanner 200. The display 910 is communicatively connected to the data analyzer 930.

[0051] In this embodiment, various devices are installed on the drone 100 and aerial photography is performed on the river basin where the silt dam exists according to a predetermined aerial photography route;

[0052] The three-dimensional laser scanner 200 carried at the bottom of the drone 100 can perform three-dimensional scanning of the terrain of the silt dam in the route during aerial photography, and establish three-dimensional terrain data in the three-dimensional laser scanner 200. After the three-dimensional terrain data is established inside the three-dimensional laser scanner 200, it can transmit the three-dimensional terrain data to the controller 400 in real time, and the controller 400 performs data processing. Since the ground receiving device 900 can cooperate with the drone 100 on the ground, the three-dimensional laser scanner 200 can send the three-dimensional terrain data of the silt dam established inside it to the display 910 in the ground receiving device 900, and can conduct in-depth analysis of various terrain data of the silt dam through the data analyzer 930;

[0053] Since the laser rangefinder 300 is installed on the front side of the drone 100 through a U-shaped fixing seat, during the navigation of the drone 100, the laser rangefinder 300 can be used to measure the actual height of the ground being photographed by the drone 100, or directly obtain the elevation change of the ground, and transmit the data to the controller 400 in real time. After the controller 400 performs data processing, the controller 400 can combine the three-dimensional terrain data of the three-dimensional laser scanner 200 with the elevation change data obtained by the laser rangefinder 300, thereby improving the three-dimensional terrain data of the silt dam.

[0054] With the help of the digital river network analyzer 500, the river network information of the silt dam can be analyzed; with the help of the slope analyzer 600, the slope information of the silt dam can be analyzed; with the help of the channel analyzer 700, the channel information of the silt dam can be analyzed. The digital river network analyzer 500, the slope analyzer 600 and the channel analyzer 700 can transmit the acquired data to the controller 400, and can also transmit the data to the data storage device 800 to achieve real-time backup.

[0055] Since the digital river network analyzer 500, the slope analyzer 600 and the channel analyzer 700 transmit data to the controller 400, the three-dimensional terrain data of the silt dam received inside the controller 400 is more complete.

[0056] Since the digital river network analyzer 500, the slope analyzer 600 and the channel analyzer 700 are all connected to the controller 400, the display 910 in the ground receiving device 900 can also display the river network information, slope information and channel information of the silt dam in real time. The ground technicians monitoring at the ground receiving device 900 can grasp various information of the silt dam in real time, such as river network information, slope information and channel information. When the ground technicians obtain the relevant information of the silt dam, it can be beneficial to the comprehensive management of the silt dam.

[0057] Embodiment 2

[0058] like Figure 1-4 As shown, based on the first embodiment, the following improvements are made:

[0059] Furthermore, the controller 400 has a central processing unit 410 therein, and the central processing unit 410 is capable of processing the data sent by the three-dimensional laser scanner 200 , the laser rangefinder 300 , the digital river network analyzer 500 , the slope analyzer 600 and the channel analyzer 700 .

[0060] The central processor 410 is a DSP controller or a single chip microcomputer.

[0061] In this embodiment, the central processor 410 may be a DSP controller or a single chip microcomputer.

[0062] Furthermore, the central processing unit 410 has a wireless transceiver unit a420, and the display 910 has a wireless transceiver unit b920, and the wireless transceiver unit a420 is communicatively connected with the wireless transceiver unit b920.

[0063] In this embodiment, the drone 100 can achieve data intercommunication and real-time data transmission through the communication connection between the wireless transceiver unit a420 and the wireless transceiver unit b920.

[0064] Among them, the wireless transceiver unit a420 and the wireless transceiver unit b920 are both LoRa wireless transceiver modules with wireless communication protocol.

[0065] Furthermore, the data analyzer 930 is connected to the controller 400 via the wireless transceiver unit b920.

[0066] In this embodiment, when the data analyzer 930 is connected to the controller 400 through the wireless transceiver unit b920, the data analyzer 930 can perform in-depth analysis on the data of the three-dimensional laser scanner 200, the laser rangefinder 300, the digital river network analyzer 500, the slope analyzer 600 and the channel analyzer 700, and can display the analysis results through the display 910.

[0067] Embodiment 3

[0068] like Figure 1-4 As shown, based on the first embodiment, the following improvements are made:

[0069] Furthermore, the drone 100 has four legs, and a supporting component 110 is installed on each leg.

[0070] In this embodiment, the supporting component 110 can provide support when the drone 100 lands.

[0071] Embodiment 4

[0072] like Figure 1-4 As shown, based on the third embodiment, the following improvements are made:

[0073] Furthermore, each group of supporting components 110 includes a support rod 1110, which is fixedly installed at the edge of the lower surface of the foot of the drone 100, and a support plate 1120 is fixedly installed at the bottom end of the support rod 1110, and the outer side of the support plate 1120 extends outward, wherein the support rod 1110 and the support plate 1120 are L-shaped.

[0074] In this embodiment, since the support rod 1110 and the support plate 1120 are L-shaped and the outer side of the support plate 1120 extends outward, the drone 100 can avoid damage to its wings due to direct contact with the ground when landing.

[0075] Furthermore, each group of supporting components 110 further includes a rubber buffer pad 1130 , which is bonded and mounted on the lower surface of the support plate 1120 , and the shape of the rubber buffer pad 1130 matches that of the support plate 1120 .

[0076] The rubber buffer pad 1130 can also be replaced with a silicone pad.

[0077] In this embodiment, under the action of the rubber buffer pad 1130, the drone 100 can be cushioned and shock-absorbed when landing, so that the contact state between the drone 100 and the ground is transformed from rigid contact to flexible contact.

[0078] In summary, the workflow of the present invention is as follows: various devices are installed on the drone 100 and aerial photography is performed on the river basin where the silt dam exists according to a predetermined aerial photography route;

[0079] The three-dimensional laser scanner 200 carried at the bottom of the drone 100 can perform three-dimensional scanning of the terrain of the silt dam in the route during the aerial photography, and establish three-dimensional terrain data in the three-dimensional laser scanner 200. After the three-dimensional terrain data is established inside the three-dimensional laser scanner 200, the three-dimensional terrain data can be transmitted to the controller 400 in real time, and the controller 400 performs data processing. Since the ground receiving device 900 can cooperate with the drone 100 on the ground, the three-dimensional laser scanner 200 can send the three-dimensional terrain data of the silt dam established inside it to the display 910 in the ground receiving device 900, and can conduct in-depth analysis of various terrain data of the silt dam through the data analyzer 930;

[0080] Since the laser rangefinder 300 is installed on the front side of the body of the drone 100 through a U-shaped fixing seat, during the navigation of the drone 100, the laser rangefinder 300 can be used to measure the actual height of the ground being photographed by the drone 100, or directly obtain the elevation change of the ground, and transmit the data to the controller 400 in real time. After the controller 400 performs data processing, the controller 400 can combine the three-dimensional terrain data of the three-dimensional laser scanner 200 with the elevation change data obtained by the laser rangefinder 300, thereby improving the three-dimensional terrain data of the silt dam;

[0081] Under the action of the digital river network analyzer 500, the river network information of the silt dam can be analyzed, under the action of the slope analyzer 600, the slope information of the silt dam can be analyzed, and under the action of the channel analyzer 700, the channel information of the silt dam can be analyzed. The digital river network analyzer 500, the slope analyzer 600 and the channel analyzer 700 can transmit the acquired data to the controller 400, and can also transmit the data to the data storage 800 to achieve real-time backup;

[0082] Since the digital river network analyzer 500, the slope analyzer 600 and the channel analyzer 700 transmit data to the controller 400, the three-dimensional terrain data of the silt dam received inside the controller 400 is more complete and comprehensive;

[0083] Since the digital river network analyzer 500, the slope analyzer 600 and the channel analyzer 700 are all connected to the controller 400, the display 910 in the ground receiving device 900 can also display the river network information, slope information and channel information of the silt dam in real time, and the ground technicians monitoring at the ground receiving device 900 can grasp various information of the silt dam in real time, such as river network information, slope information and channel information. When the ground technicians obtain the relevant information of the silt dam, it can be beneficial to the comprehensive management of the silt dam.

[0084] The drone 100 can achieve data intercommunication and real-time data transmission through the communication connection between the wireless transceiver unit a420 and the wireless transceiver unit b920;

[0085] When the data analyzer 930 is connected to the controller 400 via the wireless transceiver unit b920, the data analyzer 930 can perform in-depth analysis on the data of the three-dimensional laser scanner 200, the laser rangefinder 300, the digital river network analyzer 500, the slope analyzer 600 and the channel analyzer 700, and can display the analysis results via the display 910;

[0086] Under the action of the support component 110, it can provide support when the drone 100 lands;

[0087] Since the support rod 1110 and the support plate 1120 are L-shaped, and the outer side of the support plate 1120 extends outward, the drone 100 can avoid damage to its wings caused by direct contact with the ground when landing.

[0088] Under the action of the rubber cushion 1130, the drone 100 can be cushioned and shock-absorbed when landing, so that the contact state between the drone 100 and the ground is transformed from rigid contact to flexible contact;

[0089] The rubber buffer pad 1130 can also be replaced with a silicone pad.

[0090] The above different embodiments can be combined, replaced and used in conjunction with each other.

[0091] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0092] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for collecting siltation information of a siltation dam, comprising an unmanned aerial vehicle (100), a laser rangefinder (300) being fixedly mounted on the front side of the drone body via a U-shaped fixing seat, and the unmanned aerial vehicle (100) is also equipped with a digital river network analyzer (500), a slope analyzer (600), a channel analyzer (700) and a data storage device (800) in sequence, characterized in that: The bottom of the drone (100) is also equipped with a three-dimensional laser scanner (200), the three-dimensional laser scanner (200) is arranged on the rear side of the laser rangefinder (300), and the three-dimensional laser scanner (200) and the laser rangefinder (300) are staggered with each other; A controller (400) is fixedly mounted on the top of the body of the drone (100); the three-dimensional laser scanner (200) and the laser rangefinder (300) are electrically connected to the controller (400) via wires, respectively; and the digital river network analyzer (500), the slope analyzer (600), and the channel analyzer (700) are electrically connected to the controller (400) via wires, respectively; The digital river network analyzer (500), the slope analyzer (600) and the channel analyzer (700) are electrically connected to the data storage device (800) via wires respectively; The controller (400) has a central processing unit (410) therein, and the central processing unit (410) is capable of processing data sent by a three-dimensional laser scanner (200), a laser rangefinder (300), a digital river network analyzer (500), a slope analyzer (600), and a channel analyzer (700); Also included is a ground receiving device (900) used in conjunction with the drone (100), wherein the ground receiving device (900) has a display (910) capable of displaying the topography of the silt dam scanned by the three-dimensional laser scanner (200) and a data analyzer (930), wherein the display (910) is communicatively connected to the data analyzer (930); The central processing unit (410) has a wireless transceiver unit a (420), the display (910) has a wireless transceiver unit b (920), and the wireless transceiver unit a (420) is communicatively connected with the wireless transceiver unit b (920); The data analyzer (930) is connected to the controller (400) via the wireless transceiver unit b (920).

2. The device for collecting siltation information of a siltation dam according to claim 1, characterized in that: The central processing unit (410) is a DSP controller or a single chip microcomputer.

3. The device for collecting siltation information of a siltation dam according to claim 2 is characterized in that: The wireless transceiver unit a (420) and the wireless transceiver unit b (920) are both LoRa wireless transceiver modules with wireless communication protocol.

4. The device for collecting siltation information of a siltation dam according to claim 1, characterized in that: The drone (100) has four machine feet, and each of the machine feet is mounted with a supporting component (110).

5. The device for collecting siltation information of a siltation dam according to claim 4 is characterized by: Each group of the support components (110) comprises a support rod (1110), wherein the support rod (1110) is fixedly mounted at the edge of the lower surface of the foot of the drone (100), and a support plate (1120) is fixedly mounted at the bottom end of the support rod (1110), and the outer side of the support plate (1120) extends outward, wherein the support rod (1110) and the support plate (1120) are L-shaped.

6. The device for collecting siltation information of a siltation dam according to claim 5, characterized in that: Each group of the supporting components (110) further comprises a rubber buffer pad (1130), wherein the rubber buffer pad (1130) is bonded and mounted on the lower surface of the support plate (1120), and the shape of the rubber buffer pad (1130) matches that of the support plate (1120).

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