Energy-saving lighting device for road construction

Abstract

The utility model provides an energy-saving lighting device for road construction, and belongs to the technical field of constructional engineering. The energy-saving lighting device for road construction comprises a moving vehicle, a lifting mechanism is installed on the surface of the moving vehicle, a fixing block is arranged at the top end of the lifting mechanism, a threaded head is welded to the bottom end of the fixing block, the outer wall of the threaded head is in threaded connection with the inner top end of the lifting mechanism, a lighting mechanism is installed on the side wall of the fixing block, and a flashing board is welded to the top end of the fixing block. The inner top of the flashing board shields the lighting mechanism, the lighting end of the lighting mechanism obliquely faces the road, the lifting mechanism, the fixing block, the threaded head, the lighting mechanism and the flashing board are used in cooperation, the height of the lighting mechanism can be adjusted through the lifting mechanism, and a user can conveniently maintain or replace the lighting mechanism; and the design of the multiple lighting pieces and the adjusting pieces can provide a sufficient and uniform lighting effect, the angle of the device can be flexibly adjusted, and in addition, the device can be prevented from being corroded by rainwater.

Description

Technical Field

[0001] The present application relates to the technical field of construction engineering, and in particular to an energy-saving lighting device for road construction. Background Art

[0002] With the acceleration of urbanization and the continuous improvement of infrastructure construction, road construction has become an important part of urban development. In the process of road construction, the use of lighting devices is particularly important, which is not only related to construction efficiency, but also directly related to the safety of construction workers.

[0003] At present, traditional energy-saving lighting devices for road construction are mainly lighting equipment that meets the needs of road lighting and reduces energy consumption and environmental pollution. In the design and manufacturing process of such devices, attention will be paid to the use of efficient and energy-saving lighting technology and materials to achieve the purpose of both meeting lighting needs and reducing energy consumption. Existing energy-saving lighting devices for road construction adopt a variety of innovative methods and structures to achieve efficient, safe and energy-saving lighting effects. First of all, in terms of methods, these devices widely use efficient and energy-saving LED light sources. Compared with traditional lighting equipment, LED lamps have higher light efficiency and longer service life, can significantly reduce energy consumption, and meet the lighting needs of road construction. Secondly, in terms of structure, these devices are exquisitely designed and easy to carry and install. They usually adopt a modular design, which is convenient for flexible adjustment according to the size and shape of the construction area. At the same time, the device is also equipped with a stable bracket and base to ensure that it can be placed stably in a complex and changeable construction environment to prevent shaking and tilting. In terms of working principle, these energy-saving lighting devices mainly rely on advanced control systems and power management technologies. Through the intelligent control system, the device can automatically adjust the brightness according to the lighting needs of the construction site to avoid unnecessary energy consumption. At the same time, the use of energy-saving power management technologies, such as power factor correction and energy feedback technology, can further improve energy efficiency and reduce operating costs. However, there are many problems with traditional road construction lighting devices. First, due to the unreasonable design or distribution of light sources, the lighting area often has uneven brightness and overlapping shadows, which not only affects the visual comfort of construction workers, but also may cause visual blind spots and increase construction risks. Secondly, in road construction, the terrain and working surface of the construction area may change at any time, and the lighting angle needs to be flexibly adjusted to meet the lighting needs in different scenarios. However, traditional lighting devices often lack flexible adjustment mechanisms, which makes construction workers face many inconveniences when adjusting the lighting angle. In addition, since the installation position of lighting lamps is generally high, it is also a problem that cannot be ignored that users are not easy to maintain. In the high-altitude working environment, maintenance personnel not only face operational difficulties, but also may face safety risks. Traditional lighting devices often do not fully consider this in design and structure, making maintenance work cumbersome and dangerous. Finally, these devices also lack necessary protection measures. Under severe weather conditions such as rainy days, traditional lighting devices are often easily eroded by rain, resulting in damage or short circuit of electrical components, and may even cause safety accidents. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides an energy-saving lighting device for road construction to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model to solve its technical problems is:

[0006] A road construction energy-saving lighting device comprises a mobile vehicle, a lifting mechanism is installed on the surface of the mobile vehicle, a fixed block is arranged at the top of the lifting mechanism, a threaded head is welded to the bottom end of the fixed block, the outer wall of the threaded head is threadedly connected to the top of the lifting mechanism, a lighting mechanism is installed on the side wall of the fixed block, and a rain shield is welded to the top, the inner top of the rain shield shields the lighting mechanism, and the lighting end of the lighting mechanism is inclined toward the road.

[0007] Furthermore, the lifting mechanism includes a driving motor, a bearing, an outer cylinder, a threaded column, a lifting cylinder, two protrusions and two rows of grooves. The fixed end of the driving motor is bolted to the top of the moving vehicle, and the output end passes through the surface of the moving vehicle and is fixedly connected to the bottom end of the threaded column. The inner ring of the bearing is fixedly connected to the outer wall of the threaded column, and the outer ring fits tightly with the inner wall of the outer cylinder. The bottom end of the outer cylinder is bolted to the surface of the moving vehicle, and two protrusions are welded on both sides of the inner top end. The threaded column is installed inside the outer cylinder, and the inner wall of the lifting cylinder is provided with an internal thread and is threadedly connected to the outer wall of the threaded column. Two rows of grooves are provided on both sides of the outer wall and fit with the inner wall of the outer cylinder, and the two protrusions are slidably connected to the inside of the two rows of grooves.

[0008] Furthermore, the lighting mechanism includes four object carriers, four lighting components and four groups of adjustment components. The bottom ends of the four object carriers are respectively connected to the side wall bolts of the fixed block, and the four groups of adjustment components are respectively welded on the surface. The four lighting components are installed inside the four groups of adjustment components.

[0009] Furthermore, the object carrier includes a mounting seat and a bearing plate, one end of the mounting seat is bolted to the side wall of the fixing block, and the other end is welded to the side wall of the bearing plate, and the adjusting member is welded to the surface of the bearing plate.

[0010] Furthermore, the lighting component includes an energy-saving lighting lamp and a battery. The energy-saving lighting lamp has a shell on the back and is fixedly connected to the supporting plate through the adjusting component. The battery is installed inside the shell and is electrically connected to the energy-saving lighting lamp.

[0011] Furthermore, the adjustment member includes a support frame, two adjustment twists and two back blocks. The bottom end of the support frame is welded to the surface of the bearing plate. The two back blocks are respectively fixedly connected to the two sides of the back of the energy-saving lighting lamp, and the outer walls are tightly fitted to the two sides of the inner wall of the support frame. The opposite ends of the two adjustment twists are respectively locked and connected to the support frame and the side walls of the back blocks.

[0012] Furthermore, the mobile vehicle includes a mobile box, a cover plate and four self-locking mobile wheels. The four corners of the bottom of the mobile box are respectively connected to the top bolts of the four self-locking mobile wheels. The top bolts are fixed to the cover plate. A through hole is opened on the surface of the cover plate. An outer cylinder is fixed to the surface of the cover plate with bolts, and the bottom bolts are fixed to the driving motor.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model adopts a lifting mechanism, so that the lighting mechanism can be flexibly lifted and lowered according to construction requirements. Driven by the drive motor, the threaded column drives the lifting cylinder to lift and lower, thereby achieving precise adjustment of the height of the lighting mechanism. At the same time, the matching design of the protrusion and the groove ensures stability and safety during the lifting process. In this way, it is convenient for users to repair or replace the lighting mechanism.

[0015] 2. The design of the lighting mechanism of the utility model fully considers the lighting needs of the construction site. Through the combination of multiple object-carrying parts and lighting parts, the device can provide sufficient and uniform lighting effects to ensure that every corner of the construction area can be fully illuminated. In addition, the existence of the adjustment part allows the angle of the lighting part to be flexibly adjusted to meet the lighting needs of different terrains and work surfaces.

[0016] 3. The utility model adopts a combination of energy-saving lighting lamps and batteries, which not only has a high-efficiency lighting effect, but also can significantly reduce energy consumption, which is in line with the environmental protection concept of energy conservation and emission reduction. At the same time, the design of the battery enables the device to work normally without power supply, so that it is not restricted by other power sources on the construction site, which improves the flexibility and convenience of the construction site.

[0017] 4. The fixing block of the utility model is threadedly connected to the lifting mechanism through a threaded head, and multiple load-bearing parts are connected to the fixing block through bolts, which is convenient for disassembling the entire lighting mechanism or disassembling a damaged lighting lamp separately.

[0018] 5. The design of the rain shield of the utility model effectively protects the lighting mechanism from rain erosion and prolongs the service life of the device. At the same time, the existence of the mobile vehicle makes the entire device easy to move and transport, and adapts to the needs of different construction sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the energy-saving lighting device for road construction provided by the implementation method of the present application;

[0021] Figure 2 A schematic diagram of the structure of some road construction energy-saving lighting devices provided in the implementation mode of this application;

[0022] Figure 3 A schematic diagram of the internal structure of the lifting mechanism provided in the embodiment of the present application;

[0023] Figure 4 A schematic diagram of a cross-sectional structure of an outer cylinder provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of the connection structure between the lighting component and the adjustment component provided in the embodiment of the present application;

[0025] Figure 6 A schematic diagram of the bottom view structure of the fixing block and the threaded head provided in the embodiment of the present application;

[0026] Figure 7 A schematic diagram of the structure of the mounting base and the supporting plate provided in the implementation manner of the present application.

[0027] In the figure: 1-mobile vehicle; 2-lifting mechanism; 3-fixed block; 4-threaded head; 5-illumination mechanism; 6-rain shield; 21-driving motor; 22-bearing; 23-outer cylinder; 24-threaded column; 25-lifting cylinder; 26-bump; 27-groove; 51-carrying part; 52-illumination part; 53-adjusting part; 511-mounting seat; 512-carrying plate; 521-energy-saving lighting lamp; 522-battery; 531-support frame; 532-adjusting twist; 533-back block; 11-mobile box; 12-cover plate; 13-self-locking moving wheel. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0029] Example:

[0030] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 A road construction energy-saving lighting device includes a mobile vehicle 1, wherein the mobile vehicle 1 includes a mobile box 11, a cover plate 12 and four self-locking mobile wheels 13.

[0031] Among them, the mobile vehicle 1 serves as the basic mobile platform of the entire lighting device, and its design fully considers the complex environment and mobility requirements of the construction site. The mobile box 11, as the main structure of the mobile vehicle, is made of sturdy and durable metal material and has good compression and impact resistance. Four self-locking moving wheels 13 are installed at the four corners of the bottom. These moving wheels not only have a high load-bearing capacity, but also can easily cope with the uneven ground at the construction site. The setting of the self-locking function allows the mobile vehicle to stay stably in any position when needed to prevent sliding or moving. The cover plate 12 is bolted to the top of the mobile box 11, which plays a role in protecting the internal structure and equipment of the mobile box 11. At the same time, the through holes opened on the surface of the cover plate 12 not only facilitate the installation and fixation of the lifting mechanism 2, but also ensure the ventilation and heat dissipation of the internal structure of the mobile vehicle 1. In addition, the design of the cover plate 12 also takes into account the requirements of waterproof and dustproof to ensure that the device can work normally under severe weather conditions.

[0032] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 A road construction energy-saving lighting device includes a lifting mechanism 2 installed on the surface of a mobile vehicle 1, a fixed block 3 provided on the top of the lifting mechanism 2, a threaded head 4 welded at the bottom of the fixed block 3, a lighting mechanism 5 installed on the side wall, and a rain shield 6 welded on the top, wherein the lifting mechanism 2 includes a driving motor 21, a bearing 22, an outer cylinder 23, a threaded column 24, a lifting cylinder 25, two protrusions 26 and two rows of grooves 27; the lighting mechanism 5 includes four object carriers 51, four lighting components 52 and four groups of adjusting components 53; the object carrier 51 includes a mounting seat 511 and a bearing plate 512; the lighting component 52 includes an energy-saving lighting lamp 521 and a battery 522; the adjusting component 53 includes a support frame 531, two adjusting twists 532 and two back blocks 533.

[0033] Among them, the lifting mechanism 2 is a key component for adjusting the height of the lighting mechanism 5. Its design takes into account stability and reliability while also focusing on the convenience and flexibility of operation. The drive motor 21, as the power source of the lifting mechanism 2, adopts a high-performance DC motor with the characteristics of large output torque and wide speed adjustment range. Its fixed end is firmly connected to the inner top of the mobile vehicle 1 by bolts, ensuring that it will not loosen due to vibration or external force during operation. The output end penetrates the surface of the mobile vehicle 1 and is connected to the bottom end of the threaded column 24 by clamping to achieve power transmission. The threaded column 24 is the core component of the lifting mechanism 2. Its outer wall is designed with precise threads that match the inner threads of the inner wall of the lifting cylinder 25 to achieve lifting and lowering movement. At the same time, in order to ensure the stability of the threaded column 24 during rotation, we fixedly connect the bearing 22 to its outer wall. The inner ring of the bearing 22 is fixedly connected to the threaded column 24, and the outer ring is tightly fitted with the inner wall of the outer cylinder 23. This design not only reduces friction, but also improves the working efficiency of the lifting mechanism 2. The outer cylinder 23 serves as the outer shell of the lifting mechanism 2, and its bottom end is connected to the surface of the mobile vehicle 1 by bolts, which ensures the stability of the entire lifting mechanism. The two protrusions 26 welded on both sides of the inner top cooperate with the two rows of grooves 27 opened on the outer wall of the lifting cylinder 25, playing a guiding and limiting role. In the process of the lifting cylinder 25 moving up and down, the two protrusions 26 slide inside the grooves 27 to ensure the smooth lifting movement. In actual application, when it is necessary to adjust the height of the lighting mechanism 5, the lifting movement of the lifting cylinder 25 can be achieved by controlling the speed and direction of the drive motor 21. This design is not only easy to operate, but also has a fast lifting speed. It can meet the needs of the construction site for rapid adjustment of the height of the lighting mechanism 5, and is convenient for users to repair the lighting mechanism 5.

[0034] Among them, the lighting mechanism 5 is the core part of the road construction energy-saving lighting device, and its design fully considers the lighting needs and energy-saving requirements of the construction site. First, the lighting mechanism 5 adopts the design of four object carriers 51, and each object carrier 51 is firmly connected to the side wall of the fixed block 3 by bolts. This design not only ensures the stability of the lighting mechanism 5, but also makes the structure of the entire device more compact and reasonable. On the surface of the object carrier 51, we welded four groups of adjustment parts 53. These adjustment parts 53 have flexible angle adjustment functions, and can accurately adjust the illumination angle of the lighting part 52 according to the specific needs of the construction site. In this way, whether it is for flat ground or for steep slopes, the lighting mechanism 5 can provide the best lighting effect. The four lighting parts 52 are respectively installed in the four groups of adjustment parts 53. The lighting part 52 adopts high-efficiency and energy-saving LED lamps, which have the characteristics of high brightness, low energy consumption and long life. At the same time, the outer shell of the lighting part 52 adopts a waterproof and dustproof design to ensure normal operation under severe weather conditions.

[0035] Among them, the object carrier 51 is an important part of the lighting mechanism 5. Its design is not only related to the stability and safety of the lighting element 52, but also directly affects the service life of the entire lighting device. Figure 7 As shown, the object carrier 51 is mainly composed of a mounting seat 511 and a bearing plate 512. One end of the mounting seat 511 is firmly connected to the side wall of the fixing block 3 by bolts. This connection method is not only simple and reliable, but also easy to disassemble and repair. The other end is welded to the side wall of the bearing plate 512, and the weld is specially treated to ensure the strength and stability of the connection. The bearing plate 512 is the main component supporting the lighting component 52, and its design fully considers the load-bearing and stability. The bearing plate 512 is made of high-quality metal material with a flat and smooth surface, which can withstand greater weight and impact. At the same time, adjustment parts 53 are also welded on the surface of the bearing plate 512. These adjustment parts 53 match the lighting component 52, so that the lighting component 52 can be flexibly adjusted.

[0036] Among them, the lighting component 52 is a key component for providing light sources, and its design directly determines the lighting effect and energy-saving performance of the entire lighting device. First of all, the core component of the lighting component 52 is the energy-saving lighting lamp 521. This lamp adopts advanced energy-saving technologies, such as LED light sources and high-efficiency driving circuits, to ensure that while providing sufficient brightness, it greatly reduces energy consumption. The shell on the back not only plays a protective role, but also makes the installation and disassembly of the lamp easier. In addition, in order to ensure that the lighting component 52 can work continuously and stably, we have equipped it with a battery 522. The battery 522 is installed inside the shell and is electrically connected to the energy-saving lighting lamp 521 to provide a stable power supply for the lamp. This design allows the lighting component 52 to work for a long time without an external power supply, greatly improving its applicability and convenience.

[0037] Among them, the adjustment member 53 is a key component connecting the lighting member 52 and the object carrier 51. Its design not only affects the adjustment range and stability of the lighting member 52, but also directly affects the user experience of the entire lighting device. The main components of the adjustment member 53 include a support frame 531, two adjustment twists 532 and two back blocks 533. The support frame 531 is the main structure, and its bottom end is welded to the surface of the bearing plate 512 to ensure the stable connection between the adjustment member 53 and the object carrier 51. At the same time, the design of the support frame 531 also takes into account the load-bearing and stability to ensure that there will be no shaking or falling off when adjusting the lighting member 52. The back block 533 is fixedly connected to both sides of the back of the energy-saving lighting lamp 521, and fits tightly on both sides of the inner wall of the support frame 531. The adjustment twist 532 is the core component of the adjustment member 53, and its opposite ends are respectively locked and connected to the side walls of the support frame 531 and the back block 533. By rotating the adjustment knob 532, the positions of the back block 533 and the lighting element 52 inside the support frame 531 can be flexibly adjusted, thereby changing the illumination angle of the lighting element 52. This design enables the lighting device to be flexibly adjusted according to different construction environments and requirements, thereby improving the lighting effect and convenience of use.

[0038] The working principle of the road construction energy-saving lighting device: when in use, first, the mobile vehicle 1 is used as the carrier of the entire lighting device, responsible for transporting it to the construction site and providing it with a stable working platform. The lifting mechanism 2 is a key component for adjusting the height of the lighting mechanism 5. The threaded column 24 is driven to rotate by the driving motor 21, and the lifting movement of the lifting cylinder 25 is realized by the threaded connection between the threaded column 24 and the inner wall of the lifting cylinder 25. At the same time, the sliding of the protrusion 26 in the groove 27 ensures the stable lifting of the lifting cylinder 25. This lifting design allows the lighting mechanism 5 to be adjusted to a suitable height according to construction requirements. The lighting mechanism 5 is responsible for providing a light source. The four object carriers 51 are connected to the fixed block 3 by bolts to ensure the stable installation of the lighting component 52. The adjusting component 53 enables the lighting component 52 to flexibly adjust the angle and direction to adapt to different construction environments and lighting requirements. During the work process, the construction personnel can adjust the angle and position of the lighting component 52 through the adjusting component 53 according to the on-site conditions to meet the lighting requirements of the construction area. At the same time, the lifting mechanism 2 can adjust the height of the lighting mechanism 5 as needed to ensure that the lighting range covers the entire construction area.

[0039] It should be noted that the specific models and specifications of the energy-saving lighting lamp 521, the battery 522, and the drive motor 21 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0040] The power supply and principle of the energy-saving lighting lamp 521 and the driving motor 21 are clear to those skilled in the art and will not be described in detail here.

[0041] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An energy-saving lighting device for road construction, comprising a mobile vehicle (1), characterized in that: The mobile vehicle (1) is provided with a lifting mechanism (2) on its surface, a fixing block (3) is provided at the top of the lifting mechanism (2), a threaded head (4) is welded to the bottom of the fixing block (3), the outer wall of the threaded head (4) is threadedly connected to the top of the lifting mechanism (2), a lighting mechanism (5) is installed on the side wall of the fixing block (3), and a rain shield (6) is welded to the top, the top of the rain shield (6) shields the lighting mechanism (5), and the lighting end of the lighting mechanism (5) is tilted toward the road.

2. The road construction energy-saving lighting device according to claim 1, characterized in that: The lifting mechanism (2) comprises a driving motor (21), a bearing (22), an outer cylinder (23), a threaded column (24), a lifting cylinder (25), two protrusions (26) and two rows of grooves (27); the fixed end of the driving motor (21) is bolted to the top of the moving vehicle (1); the output end penetrates the surface of the moving vehicle (1) and is fixedly connected to the bottom end of the threaded column (24); the inner ring of the bearing (22) is fixedly connected to the outer wall of the threaded column (24); the outer ring is tightly attached to the inner wall of the outer cylinder (23). The bottom end of the outer cylinder (23) is bolted to the surface of the moving vehicle (1), and two protrusions (26) are welded on both sides of the inner top end. The threaded column (24) is installed inside the outer cylinder (23). The inner wall of the lifting cylinder (25) is provided with an internal thread and is threadedly connected to the outer wall of the threaded column (24). Two rows of grooves (27) are respectively provided on both sides of the outer wall and are fitted to the inner wall of the outer cylinder (23). The two protrusions (26) are slidably connected to the inside of the two rows of grooves (27).

3. The road construction energy-saving lighting device according to claim 2, characterized in that: The lighting mechanism (5) comprises four object-carrying parts (51), four lighting parts (52) and four groups of adjusting parts (53); the bottom ends of the four object-carrying parts (51) are respectively connected to the side walls of the fixing block (3) by bolts, and the four groups of adjusting parts (53) are respectively welded on the surfaces; the four lighting parts (52) are installed inside the four groups of adjusting parts (53).

4. The road construction energy-saving lighting device according to claim 3, characterized in that: The object carrier (51) comprises a mounting seat (511) and a bearing plate (512); one end of the mounting seat (511) is bolted to a side wall of the fixing block (3), and the other end is welded to a side wall of the bearing plate (512); the adjusting member (53) is welded to a surface of the bearing plate (512).

5. The road construction energy-saving lighting device according to claim 4, characterized in that: The lighting component (52) comprises an energy-saving lighting lamp (521) and a storage battery (522); the energy-saving lighting lamp (521) has a shell on its back and is fixedly connected to the supporting plate (512) via the adjusting component (53); the storage battery (522) is installed inside the shell and is electrically connected to the energy-saving lighting lamp (521).

6. The energy-saving lighting device for road construction according to claim 5, characterized in that: The adjusting member (53) comprises a supporting frame (531), two adjusting knobs (532) and two back blocks (533); the bottom end of the supporting frame (531) is welded to the surface of the bearing plate (512); the two back blocks (533) are respectively fixedly connected to the two sides of the back of the energy-saving lighting lamp (521), and the outer side walls are respectively tightly fitted to the two sides of the inner wall of the supporting frame (531); the opposite ends of the two adjusting knobs (532) are respectively locked and connected to the supporting frame (531) and the side walls of the back blocks (533).

7. The energy-saving lighting device for road construction according to claim 6, characterized in that: The moving vehicle (1) comprises a moving box (11), a cover plate (12) and four self-locking moving wheels (13); the four corners of the bottom of the moving box (11) are respectively connected to the top ends of the four self-locking moving wheels (13) by bolts; the top ends are bolted to the cover plate (12); a through hole is provided on the surface of the cover plate (12); an outer cylinder (23) is bolted to the surface of the cover plate (12); and the bottom ends are bolted to the driving motor (21).

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