A rock core sampling device for geological disaster reconnaissance

Abstract

The utility model relates to sampling technical field especially relates to a kind of rock core sampling equipment for geological disaster investigation.It includes sampling structure, sampling structure, cooling structure;Wherein leveling base is used to ensure that sampling structure can always keep level state in whole working process, so that leveling base effectively avoids the sampling error caused by equipment inclination;Cooling structure is used to spray cooling liquid to sampling structure uniformly, can rapidly and effectively reduce the heat generated in sampling process.The utility model can keep the second bottom plate level by adjusting multiple lifting pieces under uneven ground condition, and further ensure that sampling structure can be sampled vertically downward.Through cooling structure, cooling liquid can be sprayed in time during drilling core process, effectively reducing the high temperature generated by the friction between drill cylinder and rock, so that the rapid wear of drill cylinder due to overheating is avoided.

Description

Technical Field

[0001] This utility model relates to the field of sampling technology, and in particular to a rock core sampling device for geological disaster investigation. Background Technology

[0002] Geological exploration is a survey activity that uses various methods and means to investigate geology, select suitable bearing strata, determine the foundation type based on its bearing capacity, and calculate foundation parameters. After discovering industrially valuable mineral deposits during mineral prospecting, investigations and studies of the geological conditions of specific areas are necessary to ascertain the quality, quantity, and mining technology conditions of the minerals, and to provide the mineral reserves and geological data required for mine construction design. During geological exploration, rock sampling equipment is required to collect rock samples.

[0003] Patent document CN214584137U discloses a core drilling sampling device, including a universal rotating mechanism, a support mechanism, and a sampling mechanism. The universal rotating mechanism includes a fixed chassis, a rotating chassis, a rotating shaft, and a traveling unit. The rotating shaft is located between the fixed chassis and the rotating chassis, and the traveling unit is located on the side of the fixed chassis closest to the ground. The support mechanism includes a support frame and a track frame. The support frame is located on the side of the rotating chassis away from the ground, and the track frame is located on the side of the support frame close to the ground. The sampling mechanism includes a power unit, a lifting rod, a sampling cylinder, a bearing seat, and a cooling cylinder. The power unit is slidably mounted on the track frame. One end of the lifting rod passes through the power unit along its length and is located on both sides of the power unit, while the other end passes through the bearing seat. The sampling cylinder is permeable and located on the bearing seat. The cooling cylinder is located on the side of the bearing seat away from the ground. The length of the lifting rod is greater than the height of the end of the power unit away from the ground to the ground, allowing it to directly reach specific sampling locations for operation.

[0004] When using the above-mentioned technology, the following technical problems were found in the existing technology: Vertical sampling can avoid the distortion of core bedding and fracture direction caused by borehole inclination, ensuring that the core sample can intuitively reflect the original physical and mechanical properties of the strata (such as density and compressive strength) and lithological characteristics (such as mineral composition and cementation state); timely spraying of coolant during core drilling can effectively reduce the high temperature generated by the friction between the drill bit and the rock, prevent the drill bit from wearing out rapidly due to overheating, and thus extend the service life of the drill barrel. Therefore, a rock core sampling device for geological disaster exploration was designed. Utility Model Content

[0005] Therefore, it is necessary to provide a rock core sampling device for geological disaster exploration to address the above-mentioned technical problems, in order to solve the technical problems of difficulty in vertical sampling due to uneven ground, and severe wear of drill bits caused by high temperature during core drilling.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A rock core sampling device for geological hazard investigation includes a sampling structure and further includes: The leveling base includes a first base plate, a second base plate movably connected to the first base plate via connectors and supporting the sampling structure, and a plurality of lifting members connected between the first and second base plates, enabling the second base plate to be horizontally positioned above the first base plate; and The cooling structure includes a tank fixed to a second base plate for transferring coolant, a spray section covering part of the sampling structure, and a conveying section capable of discharging coolant from the tank toward the spray section.

[0007] As a preferred embodiment of the rock core sampling device for geological disaster exploration provided by this utility model, the sampling structure includes a first support fixed to a second base plate, a core sample that can move along the height direction of the first support through a set of guide parts, and a lifting component fixed to one side of the first support and capable of driving the core sample to move.

[0008] As a preferred embodiment of the rock core sampling device for geological disaster exploration provided by this utility model, each of the guide parts includes a guide rail fixed on the other side of the first support, and a slider slidably disposed on the guide rail. The core drilling component includes a base plate fixed to the slider and having one end passing through the central slot of the first bracket and being connected to the lifting component via transmission, a first motor inverted and fixed on the base plate, and a drill barrel located at the bottom end of the base plate and coaxially connected to the first motor.

[0009] As a preferred embodiment of the rock core sampling device for geological disaster exploration provided by this utility model, the lifting component includes a first screw rod arranged in the same direction as the first support and rotatably connected to the first support and threadedly connected to the base plate, a second motor fixed to the first support and coaxially connected to the first screw rod, and a cover also fixed to the first support and covering the first screw rod.

[0010] As a preferred embodiment of the rock core sampling device for geological disaster exploration provided by this utility model, both the first base plate and the second base plate are provided with openings that allow the drill barrel to pass through. The connector includes a ball seat fixed in the middle of the first base plate and a ball head fixed to the bottom of the first base plate and capable of rotating at any angle within the ball seat.

[0011] As a preferred embodiment of the rock core sampling device for geological disaster exploration provided by this utility model, each of the multiple lifting components includes a first node connected to a second base plate via a universal joint, a second node fixed on the first base plate, a set of connecting frames connected between the first node and the second node, and a transmission part capable of driving the set of connecting frames to move the first node closer to or away from the second node.

[0012] As a preferred embodiment of the rock core sampling device for geological disaster exploration provided by this utility model, each of the connecting frames includes two connecting rods that are rotatably connected to the first node and the second node respectively, and a third node connected between the two connecting rods; The transmission unit includes a second screw that is helically connected in opposite directions to the third node of a set of connecting frames, and a handle fixed to one end of the second screw.

[0013] As a preferred embodiment of the rock core sampling device for geological disaster exploration provided by this utility model, the spraying unit includes an annular pipe suspended above the opening of the second base plate through which the drill cylinder passes by a second bracket, and a plurality of nozzles equidistantly arranged along the central circumference of the annular pipe and communicating with the annular pipe. The conveying unit includes a pump body whose inlet is connected to the housing via a first pipe, and a second pipe connecting the pump body and the annular pipe.

[0014] As a preferred embodiment of the rock core sampling device for geological disaster exploration provided by this utility model, it further includes a control box suspended above the second base plate by a column and electrically connected to the conveying section of the sampling structure and the cooling structure; and A power supply box that is fixed on the second base plate and electrically connected to the sampling structure, the cooling structure's conveying section, and the control box.

[0015] As a preferred embodiment of the rock core sampling device for geological disaster exploration provided by this utility model, the leveling base also includes a level fixed on the second base plate for observing the levelness.

[0016] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0017] At the same time, through the above technical solutions, this utility model has at least the following beneficial effects: This utility model provides a rock core sampling device for geological disaster exploration. Through a leveling base, multiple lifting components can be adjusted to keep the second base plate horizontal even on uneven ground, ensuring that the sampling structure can perform sampling operations vertically downwards. This ensures vertical core acquisition regardless of the terrain at the exploration site, avoiding distortions in core bedding and fracture direction caused by borehole inclination. The resulting core samples more accurately reflect the original physical and mechanical properties and lithological characteristics of the strata. This utility model provides a rock core drilling and sampling device for geological disaster exploration. Through a cooling structure, coolant is sprayed in a timely manner during the core drilling process, effectively reducing the high temperature generated by friction between the drill barrel and the rock. This prevents rapid wear of the drill barrel due to overheating, significantly extending its service life and reducing equipment operating costs and maintenance frequency. Furthermore, the continuous spraying of coolant also reduces dust generated during core drilling, improving the working environment and protecting the health of operators. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of a rock core sampling device for geological disaster investigation according to this utility model. Figure 2 This is a schematic diagram of the sampling structure of a rock core sampling device for geological disaster investigation according to this utility model. Figure 3 This is a schematic diagram of the leveling base structure of a rock core sampling device for geological disaster investigation according to this utility model. Figure 4 This is a schematic diagram of the lifting component of the leveling base of a rock core sampling device for geological disaster investigation according to this utility model. Figure 5 This is a schematic diagram of the cooling structure of a rock core sampling device for geological disaster investigation according to this utility model.

[0020] In the diagram: 100, sampling structure; 110, first support; 120, guide section; 200, leveling base; 210, first base plate; 220, connector; 221, ball seat; 222, ball head; 230, second base plate; 240, opening; 300, lifting component; 310, universal joint; 320, first node; 330, second node; 340, connecting frame; 341, connecting rod; 342, third node; 350, transmission section; 351, second screw; 352, handle. ; 400, Cooling structure; 410, Housing; 420, Spraying section; 421, Annular pipe; 422, Nozzle; 423, Second bracket; 430, Conveying section; 431, First pipe; 432, Pump body; 433, Second pipe; 500, Drill core component; 510, Base plate; 520, First motor; 530, Drill barrel; 600, Lifting component; 610, First screw; 620, Second motor; 630, Baffle; 700, Column; 800, Control box; 900, Power supply box. Detailed Implementation

[0021] like Figure 1 As shown, this type of rock core drilling and sampling equipment for geological disaster exploration includes a sampling structure 100, a cooling structure 400, a column 700, a control box 800, and a power supply box 900. The sampling structure 100 is used for core drilling and sampling tasks. The leveling base 200 ensures that the sampling structure 100 remains horizontal during operation, improving sampling accuracy. The cooling structure 400 effectively reduces the heat generated during sampling by spraying coolant onto the sampling structure 100, protecting the equipment and extending its service life. The control box 800 is suspended above the leveling base 200 and fixed by the column 700. It is responsible for controlling the working status of the sampling structure 100 and the cooling structure 400 to realize automated operation. The power supply box 900 is fixed on the leveling base 200 to provide stable power support for the entire equipment and ensure that the equipment will not be interrupted due to power problems during long-term operation.

[0022] like Figure 3 As shown, and refer to Figure 1 The leveling base 200 further includes a first base plate 210, a connector 220, a second base plate 230, and multiple lifting components 300. Specifically, the first base plate 210 serves as the foundation of the entire leveling base 200, and its bottom is equipped with an anti-slip structure to ensure the stability of the equipment during operation and prevent it from sliding or shifting. The connector 220 ensures a stable connection between the second base plate 230 and the first base plate 210, while allowing the second base plate 230 to be finely adjusted within a certain range; the upper surface of the second base plate 230 forms a bearing surface that matches the sampling structure 100, ensuring that the sampling structure 100 can remain stable during operation and improving sampling accuracy. Multiple lifting components 300 are evenly distributed between the first base plate 210 and the second base plate 230. Driven manually, hydraulically or pneumatically, the level of the second base plate 230 on the first base plate 210 can be adjusted as needed to ensure that the sampling structure 100 is always in the best working condition.

[0023] like Figure 2 As shown, and refer to Figure 1 and Figure 3 The sampling structure 100 further includes a first support 110, a set of guide parts 120, a core drill 500, and a lifting part 600. Specifically, the first support 110 serves as the main supporting component of the sampling structure 100 and is firmly fixed on the second base plate 230, providing a stable operating platform for the entire sampling process. A set of guide parts 120 is installed on the first support 110 and is arranged along the height direction of the first support 110 to ensure that the core drill 500 can move accurately along a predetermined path. The core drill 500 is connected to the first support 110 via the guide part 120 and can move up and down along the guide part 120 under the drive of the lifting part 600, thereby realizing core sampling of the rock. The lifting part 600 is fixed to one side of the first support 110 and drives the core drill 500 to move through mechanical transmission, ensuring that the core drill 500 can maintain a stable moving speed and direction during the sampling process, thereby improving the accuracy and efficiency of sampling.

[0024] In some embodiments, as shown in the figure, a set of guide portions 120 further includes a guide rail and a slider; specifically, the guide rail is made of a high-strength alloy material to ensure that the slider can slide smoothly and steadily on it, reduce the resistance caused by friction, and thus improve the accuracy of the movement of the core drill 500. The core drill 500 further includes a base plate 510, a first motor 520, and a drill barrel 530; specifically, the base plate 510, as a key connecting component of the core drill 500, is designed in a rectangular shape, which not only facilitates stable fixing with the slider, but also ensures stability when connected to the lifting component 600 in transmission. The first motor 520 is inverted and fixed on the base plate 510, providing sufficient power to drive the drill barrel 530 to rotate at high speed, thereby achieving effective core drilling of the rock. The drill barrel 530 is made of high-hardness alloy steel, and its inner wall is specially treated to have a certain degree of sharpness and wear resistance, enabling it to quickly cut into the rock during core drilling and improve sampling efficiency.

[0025] The lifting component 600 further includes a first screw 610, a second motor 620, and a baffle 630. Specifically, the first screw 610 is preferably a high-precision ball screw, which can ensure the stability and accuracy of the base plate 510 during the lifting process and effectively reduce errors caused by mechanical backlash or vibration. The second motor 620 is preferably a servo motor, which has high response speed and precise position control capability. It can quickly adjust the height of the core drill 500 according to actual needs to adapt to rock sampling at different depths. That is, by threading one end of the base plate 510 through the through groove in the middle of the first bracket 110 to the first screw 610, the base plate 510 can move up and down when the first screw 610 rotates, thereby driving the core drill 500 to achieve precise lifting operation. The shield 630 is made of lightweight, high-strength engineering plastic, which not only protects the first screw 610 from external environmental influences such as dust and moisture, but also prevents operators from accidentally coming into contact with rotating parts, thus improving the safety of the equipment.

[0026] In some embodiments, such as Figure 3 As shown, both the first base plate 210 and the second base plate 230 have openings 240, allowing the drill barrel 530 to smoothly penetrate into the rock layer for sampling during core drilling operations. The size of the opening 240 is determined based on the actual application, ensuring that the drill barrel 530 can pass freely without affecting the overall structural strength of the first base plate 210 and the second base plate 230 due to an excessively large opening 240.

[0027] The connector 220 further includes a ball seat 221 and a ball head 222; specifically, the ball seat 221 is cylindrical with a smooth inner wall and high dimensional accuracy to ensure that the ball head 222 can rotate smoothly at any angle therein; The ball head 222 has a solid structure and is made of high-strength alloy steel. It is precision machined and heat-treated to give it sufficient hardness and wear resistance, and can maintain stable performance during frequent rotation. The ball seat 221 is fixedly connected to the first base plate 210 by bolts, and anti-loosening washers are provided at the connection to prevent the bolts from loosening due to vibration or other reasons during use. The ball head 222 is connected to the second base plate 230 by welding, ensuring that the entire connecting part 220 can stably transmit power and bear loads during equipment operation, and providing a reliable guarantee for the flexible rotation between the first base plate 210 and the second base plate 230.

[0028] In some embodiments, such as Figure 4 As shown, and refer to Figure 3Each of the multiple lifting components 300 further includes a universal joint 310, a first node 320, a second node 330, a set of connecting frames 340, and a transmission unit 350; specifically, the universal joint 310 has multi-angle rotation capability, can adapt to forces in different directions, and ensures that the lifting component 300 can flexibly adjust its posture in complex working environments. The first node 320 is made of high-strength cast steel with rust-proof treatment. It is connected to the universal joint 310 by bolts and can withstand large tensile and compressive forces. The second node 330 is fixed to the first base plate 210 by welding. A set of connecting frames 340 can be composed of multiple parallel steel connecting rods, which are connected by pins to form a stable triangular structure that can effectively distribute the force. The transmission unit 350 can be driven by a hydraulic cylinder, which is connected to an external hydraulic system through a pipeline. It can precisely control the moving distance and speed of the first node 320, so as to realize the smooth lifting and lowering of the lifting component 300. Thus, under the drive of the lifting component 300, the second base plate 230 can be adjusted in height, so that the second base plate 230 is horizontally positioned on the first base plate 210 through the connecting member 220. In actual operation, when rock core sampling is required, the operator can control the transmission unit 350 to drive the first node 320 to move, thereby driving the connecting frame 340 to move, based on the geological conditions of the site. With the flexible cooperation of the universal joint 310, the entire lifting component 300 can smoothly and accurately adjust the first base plate 210 to a horizontal angle, ensuring that the core drilling component 500 can maintain a vertical position for core sampling of the rock, effectively avoiding sampling deviation caused by the tilt of the base plate and improving the accuracy of sampling.

[0029] In some embodiments, not shown in the figures, the leveling base 200 also includes a level fixed to the second base plate 230 or the first bracket 110 for observing the levelness. During operation, the operator can quickly determine whether the second base plate 230 is level by observing the level. If a tilt is found, the transmission unit 350 can be controlled in time to drive the first node 320 to move, thereby driving the connecting frame 340 to move. With the cooperation of the universal joint 310, the horizontal angle of the first base plate 210 is precisely adjusted until the level shows that it is level, ensuring that the core drilling component 500 can always remain vertical to perform core drilling and sampling operations on the rock.

[0030] In some embodiments, continue as follows Figure 4As shown, a set of connecting frames 340 further includes two connecting rods 341 and a third node 342; the transmission part 350 further includes a second screw 351 and a handle 352; specifically, one end of the two connecting rods 341 is rotatably connected to the first node 320 and the second node 330 respectively, and the other end is connected to the third node 342. This structure allows the connecting frame 340 to flexibly extend and retract under the drive of the transmission part 350, so as to achieve the angle adjustment of the second base plate 230 on the first base plate 210 through the connector 220; The second screw 351 is spirally connected in the opposite direction to the third node 342 of a set of connecting brackets 340. When the handle 352 is rotated, the second screw 351 will drive the third node 342 to move. Then, through the transmission action of the connecting rod 341, the relative position of the first node 320 and the second node 330 will change, and finally the purpose of adjusting the horizontal angle of the first base plate 210 will be achieved. It should be noted that the reverse spiral design of the second screw 351 in the transmission unit 350 allows it to simultaneously act on the third node 342 of a set of connecting frames 340 when the handle 352 is turned, achieving synchronous movement of the two connecting rods 341. This synchronicity ensures the stability and accuracy of the lifting component 300 during adjustment. The handle 352 is fixed to the second screw 351, providing the operator with a convenient control method. This allows the operator to quickly adjust the level angle of the first base plate 210 by turning the handle 352 when the second base plate 230 is found to be tilted, until the level indicator shows that it is level.

[0031] like Figure 5 As shown, and refer to Figure 1 The cooling structure 400 further includes a housing 410, a spraying section 420, and a conveying section 430; specifically, the housing 410 is fixed on the second base plate 230 and contains coolant to cool the heat generated during the sampling process and prevent the equipment from being damaged due to overheating. The spray section 420 covers part of the sampling structure 100. When the coolant is delivered by the conveying section 430, it can be sprayed evenly on the sampling structure 100, effectively reducing the temperature during the sampling process.

[0032] In some embodiments, such as Figure 5 As shown, the spraying section 420 further includes an annular pipe 421, multiple nozzles 422, and a second support 423; the conveying section 430 further includes a first pipe 431, a pump body 432, and a second pipe 433; specifically, the annular pipe 421 is stably suspended above the opening 240 of the second base plate 230 by the second support 423, ensuring that no interference occurs when the drill barrel 530 passes through, while providing a stable spraying platform for the nozzles 422; Multiple nozzles 422 are equidistantly distributed along the central circumference of the annular tube 421. This arrangement allows the coolant to be sprayed evenly and comprehensively onto the drill barrel 530, thereby achieving the best cooling effect. In the conveying section 430, the pump body 432 serves as the power source, drawing coolant from the housing 410 through the first pipe 431 and conveying the coolant to the annular pipe 421 through the second pipe 433. Finally, the coolant is evenly sprayed out through multiple nozzles 422, thereby effectively controlling the temperature of the drill barrel 530 during the sampling process and preventing damage or performance degradation of the drill barrel 530 due to overheating.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. The present utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A rock core sampling device for geological disaster investigation, comprising a sampling structure (100), characterized in that, Also includes: The leveling base (200) includes a first base plate (210), a second base plate (230) movably connected to the first base plate (210) via a connector (220) and supporting the sampling structure (100), and a plurality of lifting members (300) connected between the first base plate (210) and the second base plate (230) and enabling the second base plate (230) to be horizontally positioned above the first base plate (210). as well as The cooling structure (400) includes a tank (410) fixed on a second base plate (230) for transferring coolant, a spray section (420) covering part of the sampling structure (100), and a conveying section (430) capable of discharging coolant from the tank (410) toward the spray section (420).

2. The rock core sampling equipment for geological disaster investigation according to claim 1, characterized in that, The sampling structure (100) includes a first bracket (110) fixed to a second base plate (230), a core drill (500) movable along the height direction of the first bracket (110) via a set of guides (120), and a lifting member (600) fixed to one side of the first bracket (110) and capable of moving the core drill (500).

3. The rock core sampling equipment for geological disaster investigation according to claim 2, characterized in that, Each of the guide portions (120) includes a guide rail fixed to the other side of the first bracket (110) and a slider slidably disposed on the guide rail; The core drill (500) includes a base plate (510) fixed to the slider and with one end passing through the middle slot of the first bracket (110) and connected to the lifting member (600) in a transmission connection, a first motor (520) fixed upside down on the base plate (510), and a drill barrel (530) located at the bottom end of the base plate (510) and coaxially connected to the first motor (520).

4. The rock core sampling equipment for geological disaster investigation according to claim 3, characterized in that, The lifting component (600) includes a first screw (610) that is co-located with the first bracket (110) and rotatably connected to the first bracket (110) and threadedly connected to the base plate (510), a second motor (620) that is fixed to the first bracket (110) and coaxially connected to the first screw (610), and a cover (630) that is also fixed to the first bracket (110) and covers the first screw (610).

5. The rock core sampling equipment for geological disaster investigation according to claim 3, characterized in that, Both the first base plate (210) and the second base plate (230) have openings (240) that allow the drill barrel (530) to pass through. The connector (220) includes a ball seat (221) fixed in the middle of the first base plate (210) and a ball head (222) fixed in the bottom of the first base plate (210) and capable of rotating at any angle within the ball seat (221).

6. The rock core sampling equipment for geological disaster investigation according to claim 5, characterized in that, Each of the multiple lifting components (300) includes a first node (320) connected to a second base plate (230) via a universal joint (310), a second node (330) fixed on the first base plate (210), a set of connecting frames (340) connecting the first node (320) and the second node (330), and a transmission part (350) capable of driving the set of connecting frames (340) to move the first node (320) closer to or away from the second node (330).

7. The rock core sampling equipment for geological disaster investigation according to claim 6, characterized in that, Each of the connecting frames (340) includes two connecting rods (341) that are rotatably connected to the first node (320) and the second node (330) respectively, and a third node (342) connected between the two connecting rods (341). The transmission unit (350) includes a second screw (351) that is screwed in opposite directions to the third node (342) of a set of connecting frames (340), and a handle (352) fixed to one end of the second screw (351).

8. The rock core sampling equipment for geological disaster investigation according to claim 5, characterized in that, The spraying section (420) includes an annular tube (421) suspended above an opening (240) in the second base plate (230) through which the drill barrel (530) passes, via a second bracket (423), and a plurality of nozzles (422) equidistantly arranged along the central circumference of the annular tube (421) and communicating with the annular tube (421). The conveying unit (430) includes a pump body (432) whose inlet is connected to the housing (410) via a first pipe (431), and a second pipe (433) connecting the pump body (432) and the annular pipe (421).

9. The rock core sampling equipment for geological disaster investigation according to claim 1, characterized in that, It also includes a control box (800) suspended above the second base plate (230) via a column (700) and electrically connected to a conveying section (430) of the sampling structure (100) and the cooling structure (400); and A power supply box (900) is fixed on the second base plate (230) and electrically connected to the sampling structure (100), the conveying part (430) of the cooling structure (400), and the control box (800).

10. The rock core sampling equipment for geological disaster investigation according to claim 9, characterized in that, The leveling base (200) also includes a level fixed on the second base plate (230) for observing the levelness.

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