Multi-platform adaptive reconstruction and expansion existing pavement performance acquisition device

Abstract

The utility model relates to a multi-platform adaptive reconstruction and expansion existing pavement performance acquisition device. The traditional existing road performance classification mostly adopts manual detection, the manual detection efficiency is low, the accuracy is poor and the cost is high, detection vehicles are also adopted for current part of highway pavement disease detection, but vehicles need to be refitted, the investment is relatively high and the service area is limited. The device comprises a carrying mechanism and a rotatable three-dimensional laser scanning mechanism, the carrying mechanism is arranged on a universal unmanned aerial vehicle or a vehicle, and the three-dimensional laser scanning mechanism is arranged below or above the carrying mechanism; the carrying mechanism comprises an adjusting damping assembly, and the adjusting damping assembly is arranged below the universal unmanned aerial vehicle or above the vehicle. According to the utility model, the existing pavement performance detection efficiency and detection accuracy can be improved, the labor cost and the influence on the existing traffic can be reduced, and the device has the advantages of portability, universality and wide application range, and can be carried on various types of transportation tools.

Description

TECHNICAL FIELD

[0001] The utility model relates to road surface detection technical field, concretely relates to a multi -platform adaptation type reconstruction existing road surface performance collection device. BACKGROUND

[0002] Now, highway personnel flow amount increases day by day, and early road standard can not satisfy the traffic volume demand of present stage, and existing road reconstruction engineering also increases along with it. When reconstructing or partially utilizing existing road, to reduce cost as much as possible and make full use of existing road, it is inevitable to evaluate the present situation performance classification, thereby different disposal measures are adopted to different grade road sections.

[0003] Most of traditional existing road performance classification adopts artificial detection, and the detection personnel walk detection efficiency is low, and the cycle is long, and in the detection process, the identification, positioning and measurement of disease mainly rely on naked eye judgment, are easily influenced by subjective factors, and the disease grade division has great variability, and the accuracy is poor, and artificial detection needs to close traffic, seriously influences the transportation efficiency of highway, when the existing road is long, the cost of manpower is high in sectional investment. In addition, the detection vehicle is also used for detecting the road disease of part of the highway at present, but the vehicle needs to be modified, the investment is high and the service area is limited.

[0004] Therefore, a multi -platform adaptation type reconstruction existing road surface performance collection device with high detection efficiency, good accuracy, low cost and portability is needed. SUMMARY

[0005] The utility model aims at providing a multi -platform adaptation type reconstruction existing road surface performance collection device to at least solve the problems of low efficiency, poor accuracy, high cost and limited detection range in present road detection.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0007] A multi -platform adaptation type reconstruction existing road surface performance collection device, including the lading mechanism and rotatable three -dimensional laser scanning mechanism, the lading mechanism is arranged on the general unmanned aerial vehicle or vehicle, and the three -dimensional laser scanning mechanism is arranged below or above the lading mechanism.

[0008] The lading mechanism includes the adjusting damping assembly, and the adjusting damping assembly is arranged below the general unmanned aerial vehicle or above the vehicle.

[0009] Further, the lading mechanism further includes the connecting assembly, and the connecting assembly is arranged on the general unmanned aerial vehicle, and the adjusting damping assembly is arranged below the connecting assembly.

[0010] Further, the connecting assembly comprises a plurality of upper fixing frames, a plurality of vertical telescopic fixing frames and a plurality of lower fixing frames, the upper fixing frames and the lower fixing frames are arranged at the upper and lower ends of the vertical telescopic fixing frames respectively, and rubber fixing blocks are arranged on the bottom surfaces of the upper fixing frames.

[0011] Further, the adjusting and damping assembly comprises a plurality of strong magnetic blocks, a plurality of longitudinal adjusting fixing frames, a plurality of rubber damping balls, a plurality of transverse adjusting fixing frames and a damping plate, the strong magnetic blocks are arranged below the lower fixing frames, the longitudinal adjusting fixing frames are arranged in parallel and are arranged below the strong magnetic blocks at two ends respectively, the transverse adjusting fixing frames are arranged in parallel between the longitudinal adjusting fixing frames and are perpendicular to the longitudinal adjusting fixing frames in the horizontal direction, and the damping plate is fixed below the longitudinal adjusting fixing frames through the rubber damping balls.

[0012] Further, a plurality of corresponding distributed screw holes are formed in the damping plate and the longitudinal adjusting fixing frames respectively.

[0013] Further, the general unmanned aerial vehicle comprises a fuselage, a plurality of propellers, a plurality of connecting pieces and a plurality of landing gears, the connecting pieces are arranged around the fuselage respectively, the propellers are arranged on the connecting pieces respectively, and the landing gears are arranged at the bottom of the fuselage.

[0014] Further, the landing gear comprises a telescopic rod and a rubber protection pad, the telescopic rod is arranged at the lower end surface of the fuselage, and the rubber protection pad is arranged at the bottom of the telescopic rod.

[0015] Further, the telescopic rod is in a U-shaped structure.

[0016] Further, the three-dimensional laser scanning mechanism comprises a scanning fuselage, a camera, a plurality of vertical lens rotating wheels and a horizontal lens rotating wheel, the camera is arranged at the middle part of the scanning fuselage, the vertical lens rotating wheels are arranged at the two sides of the camera respectively, one end of the horizontal lens rotating wheel is connected with the camera, and the other end of the horizontal lens rotating wheel is connected with the adjusting and damping assembly.

[0017] Further, the adjusting and damping assembly comprises a plurality of strong magnetic blocks, a plurality of longitudinal adjusting fixing frames, a plurality of rubber damping balls, a plurality of transverse adjusting fixing frames and a damping plate, the strong magnetic blocks are arranged on the top of the vehicle, the longitudinal adjusting fixing frames are arranged in parallel and are arranged above the strong magnetic blocks at two ends respectively, the transverse adjusting fixing frames are arranged in parallel between the longitudinal adjusting fixing frames and are perpendicular to the longitudinal adjusting fixing frames in the horizontal direction, and the damping plate is fixed above the longitudinal adjusting fixing frames through the rubber damping balls.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] 1. The utility model provides a multi -platform adaptation type performance collection device of extension and reconstruction existing pavement, through adjustable mounting mechanism, the rotatable three -dimensional laser scanning mechanism is fixed on general unmanned aerial vehicle or vehicle and carries out all -round scanning, returns to the scanning pavement photo through the large -scale existing road disease type and grading standard training, realizes intelligent efficient existing road disease detection and nature classification, the utility model can improve existing pavement performance detection efficiency, avoids the classification deviation caused by the project personnel manager's cognition, thereby improves detection accuracy, can reduce artificial cost and the influence to existing traffic, and has portable universality, wide application range, can be carried on each type transport tool, application is flexible, convenient operation.

[0020] 2. The utility model discloses a mounting mechanism can be applicable to each type size's unmanned aerial vehicle also can be directly carried on each type roof, wide application range, wide field of vision range, convenient to carry, can be used for multi -region pavement detection, has reduced the influence of closed traffic, has guaranteed the safety of detection personnel.

[0021] 3. The utility model discloses a rubber shock -absorbing ball reduces the body and vehicle vibration in the scanning process, guarantees the stability in the vehicle -borne or airborne scanning process, thereby ensures the accuracy of scanning result.

[0022] 4. The utility model discloses a vertical lens rotating wheel and horizontal lens rotating wheel can realize all -round no -dead -angle scanning, guarantees the accuracy of scanning, improves the precision of classification. ACCURACY

[0023] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description is only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying creative labor, can also obtain the drawing of other embodiments according to these drawings.

[0024] Figure 1 It is the main view structural schematic drawing of example 1;

[0025] Figure 2 It is the top view structural schematic drawing of example 1;

[0026] Figure 3 It is the side view structural schematic drawing of the mounting mechanism of example 1;

[0027] Figure 4 It is the top view structural schematic drawing of the mounting mechanism of example 1;

[0028] Figure 5 It is the landing gear structural schematic drawing of example 1;

[0029] Figure 6 is a schematic diagram of the front structure of embodiment 2;

[0030] Figure 7 is a schematic diagram of the side structure of embodiment 2;

[0031] identified in the figure as:

[0032] 1 - general unmanned aerial vehicle, 11 - fuselage, 12 - propeller, 13 - connecting piece, 14 - landing gear, 141 - telescopic rod, 142 - rubber protection pad,

[0033] 2 - carrying mechanism, 21 - upper fixing frame, 22 - vertical telescopic fixing frame, 23 - strong magnetic block, 24 - longitudinal adjustment fixing frame, 25 - lower fixing frame, 26 - rubber fixing block, 27 - rubber shock absorbing ball, 28 - transverse adjustment fixing frame,

[0034] 3 - three-dimensional laser scanning mechanism, 31 - scanning body, 32 - camera, 33 - vertical lens rotating wheel, 34 - horizontal lens rotating wheel. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0036] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or it can be detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] Embodiment 1:

[0039] As Figure 1As shown, the embodiment provides a multi-platform adaptive type reconstruction and expansion existing pavement performance collection device, which is suitable for disease detection and pavement performance evaluation classification of cement and asphalt pavement, especially for long distance, range dispersed existing road reconstruction or engineering using existing road, the device comprises a carrying mechanism 2 and a three-dimensional laser scanning mechanism 3, the carrying mechanism 2 is arranged on the general unmanned aerial vehicle 1, and the three-dimensional laser scanning mechanism 3 is arranged below the carrying mechanism 2.

[0040] Specifically, as Figure 2 shown, the general unmanned aerial vehicle 1 comprises a fuselage 11, four propellers 12, four connecting pieces 13 and two landing gears 14, the connecting pieces 13 are integrally connected to four corners of the fuselage 11, the horizontal section of the connecting piece 13 is triangular, and the corner away from the fuselage 11 is arc-shaped, the four propellers 12 are respectively welded and fixed to the top surface of the arc-shaped corner away from the fuselage 11 of the connecting piece 13, and the two landing gears 14 are symmetrically welded to the bottom of the fuselage 11, so that the general unmanned aerial vehicle 1 can be used for multi-region pavement detection, the influence of closing traffic is reduced, and the safety of the detection personnel is ensured.

[0041] As Figure 5 shown, the landing gear 14 comprises a telescopic rod 141 and a rubber protection pad 142, the telescopic rod 141 is in a U-shaped structure, the two ends of the top of the U-shaped telescopic rod 141 are welded and fixed to the lower end surface of the fuselage 11, and the rubber protection pad 142 is pasted to the bottom of the U-shaped telescopic rod 141, so as to avoid abrasion of the bottom of the telescopic rod 141.

[0042] In the embodiment, the carrying mechanism 2 comprises a connecting assembly and an adjusting and damping assembly, the connecting assembly is arranged on the fuselage 11 of the general unmanned aerial vehicle 1, and the adjusting and damping assembly is arranged below the fuselage 11 and the connecting assembly and between the two landing gears 14.

[0043] As Figure 4 shown, the connecting assembly comprises four upper fixing frames 21, four vertical telescopic fixing frames 22 and four lower fixing frames 25, one upper fixing frame 21 and one lower fixing frame 25 are respectively welded to the upper and lower ends of each vertical telescopic fixing frame 22, thereby forming four same components, the upper fixing frame 21 and the lower fixing frame 25 are both cuboids and consistent in size, and the bottom surface of each upper fixing frame 21 is pasted with a rubber fixing block 26, so that the supporting assembly is fixed firmly on the general unmanned aerial vehicle 1, and the device can be suitable for unmanned aerial vehicles of various types and sizes by adjusting the vertical telescopic fixing frame 22.

[0044] The adjusting and damping assembly comprises four strong magnetic blocks 23, two longitudinal adjusting fixing frames 24, four rubber damping balls 27, two transverse adjusting fixing frames 28 and a damping plate, the four strong magnetic blocks 23 are respectively magnetically attracted to the bottom surface of the lower fixing frame 25, the two longitudinal adjusting fixing frames 24 are arranged in parallel, and the two ends of each longitudinal adjusting fixing frame 24 are magnetically attracted to the bottom surface of the strong magnetic block 23, the two transverse adjusting fixing frames 28 are arranged in parallel between the two longitudinal adjusting fixing frames 24, the two ends of the transverse adjusting fixing frame 28 are respectively welded with the side ends of the longitudinal adjusting fixing frame 24 to form an integral whole, and are distributed perpendicularly to the longitudinal adjusting fixing frame 24 in the horizontal direction, the longitudinal adjusting fixing frame 24 and the transverse adjusting fixing frame 28 integrally form an I-shaped structure, and the longitudinal adjusting fixing frame 24 and the transverse adjusting fixing frame 28 can be stretched and contracted.

[0045] As shown in Figure 3 the damping plate is arranged below the longitudinal adjusting fixing frame 24, the rubber damping ball 27 is arranged between the longitudinal adjusting fixing frame 24 and the damping plate, the damping plate is a cuboid, and a screw hole is formed at each corner of the damping plate, corresponding screw holes are formed on the longitudinal adjusting fixing frame 24, two screw holes are formed on each longitudinal adjusting fixing frame 24, nuts are arranged in the screw holes of the damping plate and the longitudinal adjusting fixing frame 24, and the two ends of the rubber damping ball 27 are respectively sleeved on the nuts of the damping plate and the longitudinal adjusting fixing frame 24, so as to fixedly connect the damping plate and the longitudinal adjusting fixing frame 24, the four rubber damping balls 27 at the four corners can reduce the vibration of the machine body during scanning, ensure the stability during airborne scanning, and thus ensure the accuracy of the scanning result.

[0046] The three-dimensional laser scanning mechanism 3 is located between the two landing gears 14 and is fixed below the damping plate of the mounting mechanism 2 through the horizontal lens rotating wheel 34, the three-dimensional laser scanning mechanism 3 comprises a scanning machine body 31, a camera 32, two vertical lens rotating wheels 33 and the horizontal lens rotating wheel 34, the camera 32 is arranged in the middle of the scanning machine body 31, the two vertical lens rotating wheels 33 are respectively fixed on the two sides of the camera 32, one end of the horizontal lens rotating wheel 34 is connected with the camera 32, and the other end is connected with the bottom of the damping plate, the horizontal lens rotating wheel 34 plays a connecting role and a rotating role, and through the vertical lens rotating wheel 33 and the horizontal lens rotating wheel 34, omnidirectional and dead-angle-free scanning can be realized, so as to ensure the accuracy of scanning and improve the accuracy of classification, and a positioning system is arranged on the three-dimensional laser scanning mechanism 3, in this embodiment, the positioning system is a prior art.

[0047] In this embodiment, a remote control mechanism is also provided, which includes an integrated screen display component, a signal transmitting component and an operation panel. The screen display component, the signal transmitting component and the operation panel are all prior art. Through the remote control mechanism, the operation of the general unmanned aerial vehicle 1 and the three-dimensional laser scanning mechanism 3 can be controlled, and the image data obtained by the camera 32 can be uploaded to a terminal capable of processing images, and finally the road surface condition can be obtained.

[0048] The embodiment can improve the detection and discrimination rate, avoid classification deviation caused by the cognition of project personnel supervisors, and greatly reduce the cost of manpower and material resources and construction time.

[0049] The installation and use process of the embodiment is as follows:

[0050] First, adjust the mounting mechanism 2, adjust the longitudinal adjusting fixing frame 24 according to the size of the general unmanned aerial vehicle 1, perform horizontal longitudinal adjustment, adjust the transverse adjusting fixing frame 28 to the size of the chassis of the general unmanned aerial vehicle 1, perform horizontal transverse adjustment, then adjust the vertical telescopic fixing frame 22 according to the height of the general unmanned aerial vehicle 1, fix the mounting mechanism 2 on the fuselage 11 of the general unmanned aerial vehicle 1, then install the three-dimensional laser scanning mechanism 3. After take-off, if the landing gear 14 blocks the line of sight, the telescopic rod 141 can be adjusted to retract the landing gear 14, reduce interference, and extend the landing gear 14 when landing.

[0051] The position of the three-dimensional laser scanning mechanism 3 is determined based on the positioning system, and the vertical lens rotating wheel 33 and the horizontal lens rotating wheel 34 are used for full-directional and dead-angle-free scanning of the road surface. After scanning, the scanning data is transmitted to the background system for classification of the road surface performance.

[0052] After detection, the landing gear 14 is slowly lowered, and a detection report is obtained at the image processing center. The unreasonable section can be appropriately modified according to the video playback function.

[0053] Embodiment 2:

[0054] As shown in Figure 6 The embodiment provides a multi-platform adaptive type reconstruction and expansion existing road surface performance acquisition device, which includes a mounting mechanism 2 and a three-dimensional laser scanning mechanism 3. The mounting mechanism 2 is arranged on the top of a vehicle, and the three-dimensional laser scanning mechanism 3 is arranged above the mounting mechanism 2.

[0055] As shown in Figure 7As shown, the mounting mechanism 2 comprises an adjusting and damping assembly, which comprises four strong magnetic blocks 23, two longitudinal adjusting fixing frames 24, four rubber damping balls 27, two transverse adjusting fixing frames 28 and a damping plate, the four strong magnetic blocks 23 are respectively magnetically attracted to the top of the vehicle, the two longitudinal adjusting fixing frames 24 are arranged in parallel, and the two ends of each longitudinal adjusting fixing frame 24 are magnetically attracted to the top surface of the strong magnetic block 23, the two transverse adjusting fixing frames 28 are arranged in parallel between the two longitudinal adjusting fixing frames 24, and the two ends of the transverse adjusting fixing frame 28 are respectively welded with the side ends of the longitudinal adjusting fixing frame 24 to form an integral whole, and are distributed in the horizontal direction perpendicular to the longitudinal adjusting fixing frame 24.

[0056] The damping plate is arranged above the longitudinal adjusting fixing frame 24.

[0057] The three-dimensional laser scanning mechanism 3 is fixed above the damping plate of the mounting mechanism 2 through a horizontal lens rotating wheel 34, one end of the horizontal lens rotating wheel 34 is connected with the camera 32, and the other end is connected with the top of the damping plate.

[0058] The installation and use process of the embodiment is as follows:

[0059] The strong magnetic blocks 23 are directly attracted to the top of each type of vehicle, and then the three-dimensional laser scanning mechanism 3 is installed.

[0060] The position of the three-dimensional laser scanning mechanism 3 is determined based on the positioning system, and the vertical lens rotating wheel 33 and the horizontal lens rotating wheel 34 are used for omnidirectional and dead-angle-free scanning of the road surface, and after the scanning is completed, the road surface performance classification is performed on the background system.

[0061] After the detection is completed, the detection report is obtained at the image processing center, and the unreasonable section can be appropriately modified according to the video playback function.

[0062] The remaining structure and principle are consistent with those of embodiment 1.

[0063] The above application of specific examples is used to describe the utility model, which is only used to help understand the utility model, and does not limit the utility model. For the skilled in the art to which the utility model belongs, according to the idea of the utility model, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A multi-platform adaptable device for collecting data on the performance of existing road surfaces during reconstruction and expansion, characterized in that: The application relates to a three-dimensional laser scanning device, which comprises a carrying mechanism (2) and a rotatable three-dimensional laser scanning mechanism (3), the carrying mechanism (2) is arranged on a general unmanned aerial vehicle (1) or a vehicle, and the three-dimensional laser scanning mechanism (3) is arranged below or above the carrying mechanism (2); the carrying mechanism (2) comprises an adjusting and damping assembly, the adjusting and damping assembly is arranged below the general unmanned aerial vehicle (1) or above the vehicle; the three-dimensional laser scanning mechanism (3) comprises a scanning body (31), a camera (32), a plurality of vertical lens rotating wheels (33) and a horizontal lens rotating wheel (34), the camera (32) is arranged in the middle of the scanning body (31), the vertical lens rotating wheels (33) are arranged on the two sides of the camera (32) respectively, and one end of the horizontal lens rotating wheel (34) is connected with the camera (32) and the other end is connected with the adjusting and damping assembly.

2. The multi-platform adaptive performance acquisition device for reconstruction and expansion of existing pavement according to claim 1, characterized in that: The carrying mechanism (2) further comprises a connecting assembly, the connecting assembly is arranged on the general unmanned aerial vehicle (1), and the adjusting and damping assembly is arranged below the connecting assembly.

3. The multi-platform adaptive performance acquisition device for reconstruction and expansion of existing pavement according to claim 2, characterized in that: The connecting assembly comprises a plurality of upper fixing frames (21), a plurality of vertical telescopic fixing frames (22) and a plurality of lower fixing frames (25), the upper fixing frames (21) and the lower fixing frames (25) are arranged on the upper and lower ends of the vertical telescopic fixing frames (22) respectively, and rubber fixing blocks (26) are arranged on the bottom surfaces of the upper fixing frames (21).

4. The multi-platform adaptive performance acquisition device for reconstruction and expansion of existing pavement according to claim 3, characterized in that: The adjusting and damping assembly comprises a plurality of strong magnetic blocks (23), a plurality of longitudinal adjusting fixing frames (24), a plurality of rubber damping balls (27), a plurality of transverse adjusting fixing frames (28) and a damping plate, the strong magnetic blocks (23) are arranged below the lower fixing frames (25), the longitudinal adjusting fixing frames (24) are arranged in parallel and are arranged below the strong magnetic blocks (23) at two ends respectively, the transverse adjusting fixing frames (28) are arranged in parallel between the longitudinal adjusting fixing frames (24) and are perpendicular to the longitudinal adjusting fixing frames (24) in the horizontal direction, and the damping plate is fixed below the longitudinal adjusting fixing frames (24) through the rubber damping balls (27).

5. The multi-platform adaptive performance acquisition device for reconstruction and expansion of existing pavement according to claim 4, characterized in that: A plurality of corresponding distributed screw holes are formed in the damping plate and the longitudinal adjusting fixing frames (24).

6. The multi-platform adaptive performance acquisition device for reconstruction and expansion of existing pavement according to claim 1, characterized in that: The general unmanned aerial vehicle (1) comprises a body (11), a plurality of propellers (12), a plurality of connecting pieces (13) and a plurality of landing gears (14), the connecting pieces (13) are arranged around the body (11), the propellers (12) are arranged on the connecting pieces (13) respectively, and the landing gears (14) are arranged at the bottom of the body (11).

7. The multi-platform adaptive performance acquisition device for reconstruction and expansion of existing pavement according to claim 6, characterized in that: The landing gear (14) comprises a telescopic rod (141) and a rubber protection pad (142), the telescopic rod (141) is arranged at the lower end surface of the body (11), and the rubber protection pad (142) is arranged at the bottom of the telescopic rod (141).

8. The multi-platform adaptive performance acquisition device for reconstruction and expansion of existing pavement according to claim 7, characterized in that: The telescopic rod (141) is in a U-shaped structure.

9. The multi-platform adaptive performance acquisition device for reconstruction and expansion of existing pavement according to claim 1, characterized in that: The adjusting shock-absorbing assembly comprises a plurality of strong magnetic blocks (23), a plurality of longitudinal adjusting fixing frames (24), a plurality of rubber shock-absorbing balls (27), a plurality of transverse adjusting fixing frames (28) and a shock-absorbing plate, the strong magnetic blocks (23) are arranged on the top of the vehicle, the longitudinal adjusting fixing frames (24) are arranged in parallel and two ends are arranged above the strong magnetic blocks (23) respectively, the transverse adjusting fixing frames (28) are arranged in parallel between the longitudinal adjusting fixing frames (24) and are perpendicular to the longitudinal adjusting fixing frames (24) in the horizontal direction, and the shock-absorbing plate is fixed above the longitudinal adjusting fixing frames (24) through the rubber shock-absorbing balls (27).

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