Loose earthwork supporting frame for geotechnical engineering investigation

Abstract

The utility model discloses a loose earthwork support frame for geotechnical engineering investigation, which comprises a bottom frame, an angle adjusting component and a support head, a support arm of the support frame can be rotationally adjusted through a driving component, a bracket can be adjusted through the angle adjusting component, and on one hand, the angle of the bracket can be adjusted by rotating the support arm; in geotechnical engineering investigation, terrains are often complex and changeable, the angle adjusting capacity of the supporting arm and the bracket enables the supporting frame to adapt to terrains with different gradients and shapes, it is ensured that stable supporting can be provided under various conditions, on the other hand, the supporting frame can be better attached to the surface of loose earthwork, and the supporting effect is good. And closer contact is achieved, more uniform supporting force is provided, displacement or collapse of earthwork in the exploration process is effectively prevented, and therefore the using safety and reliability of the supporting frame are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rock engineering investigation, in particular to a loose earth support frame used for geotechnical engineering investigation. Background Art

[0002] Rock engineering investigation is a technical activity to gain an in-depth understanding of geological conditions, which is crucial to ensuring the safety and stability of the project. In this type of investigation, support frames are usually required. By using support frames to support loose earth, the stability of the investigation area can be guaranteed and landslides or other geological disasters can be prevented.

[0003] However, the existing support frames have certain defects in supporting loose earthwork in geotechnical engineering surveys. The existing support frames lack an angle adjustment mechanism, and are unable to achieve angle adjustment of the support components. At the same time, the support components cannot be adjusted according to the terrain, which makes them relatively limited in complex terrains. In the case of uneven earthwork structure, the end of the support component in contact with the earthwork cannot fit well with the earthwork, so that the supporting force cannot be evenly distributed on the loose earthwork, and thus cannot provide stable support, making it easy for the earthwork to shift or collapse during the survey, thereby reducing the safety and reliability of use. At the same time, there is no buffer between the end of the support component used for support and the earthwork. During rock engineering surveys, the vibration caused by external impacts cannot be buffered, which will lead to the collapse of earthwork caused by rock engineering surveys and construction. Utility Model Content

[0004] The utility model aims to provide a loose earth support frame for geotechnical engineering investigation, which solves the problem that the existing loose earth support frame has a fixed structure and cannot realize angle adjustment of the support components.

[0005] The technical solution adopted by the utility model is: a loose earth support frame for geotechnical engineering investigation, including a base frame, an angle adjustment component and a support head, support components are installed on both sides of the base frame, and the side of the base frame is matched with a support component to provide a good basic support for the support frame, the top of the base frame is hinged with a support arm, and a driving component for driving the support arm to rotate is installed in the middle of the base frame. The installation of the driving component makes the rotation operation of the support arm easier, and the construction personnel can adjust the angle and position of the support arm through the driving component. The support arm is hinged with a bracket at one end away from the base frame, and the angle adjustment component is arranged between the bracket and the support arm. A support plate is welded on the top of the bracket. The support arm can be rotated and adjusted by a driving assembly, and the bracket can be adjusted by an angle adjustment assembly. By rotating the support arm and adjusting the angle of the bracket, on the one hand, in geotechnical engineering surveys, the terrain is often complex and changeable, and the angle adjustment capability of the support arm and the bracket enables the support frame to adapt to terrains of different slopes and shapes. On the other hand, it enables the support frame to better fit the surface of the loose earth, achieve closer contact and provide more uniform supporting force. Several of the support heads are evenly fixed on the top of the support plate. By evenly arranging multiple support heads on the support plate and using multiple support heads to support the loose earth, it can be ensured that the supporting force is evenly distributed on the entire loose earth.

[0006] The utility model is also characterized in that:

[0007] Preferably, the support head comprises a fixing plate, a mounting plate and a support plate, the fixing plate being fixed on the top of the supporting plate, a plurality of support rods being vertically welded on the fixing plate, the mounting plate being sleeved on the plurality of support rods, and the mounting plate slidingly cooperates with the plurality of support rods, a spring being sleeved on the support rod between the mounting plate and the fixing plate, and the support plate being mounted on the top of the mounting plate, and a spring being arranged in the support head. On the one hand, the spring makes the support head elastic and can automatically adjust to adapt to loose earthwork of different shapes and structures, ensuring that the support head can effectively contact the loose earthwork and provide stable support when the earthwork structure is uneven. On the other hand, the spring can provide a buffering effect, can absorb the vibration caused by the external impact generated by the rock engineering survey, and reduce the possibility of the loose earthwork collapsing due to the rock engineering survey and construction. On the other hand, the buffering effect of the spring can reduce the damage to the earthwork structure when the support head contacts the earthwork.

[0008] Preferably, wheel frames are welded at the four corners of the base frame, and travel wheels are installed on the four wheel frames. The wheel frames and travel wheels at the four corners of the base frame provide convenience for movement, so that the support frame can be quickly deployed to the required position.

[0009] Preferably, the support assembly includes a connecting seat, a support leg and a first hydraulic cylinder, the connecting seat is welded to the side of the base frame, the support leg and the first hydraulic cylinder are both hingedly fitted on the connecting seat, wherein an ear plate is welded to the middle of the support leg, a first hydraulic rod is provided at one end of the first hydraulic cylinder away from the connecting seat, the end of the first hydraulic rod away from the first hydraulic cylinder is hinged to the ear plate, and a foot pad is hinged at one end of the support leg away from the connecting seat. The support leg in the support assembly is hinged to the base frame, and the angle can be adjusted by the drive of the first hydraulic cylinder. By adjusting the angle of the support leg, the support frame can be adjusted to a suitable position regardless of whether it is flat terrain or a slope, and the contact area between the bottom of the support leg and the ground can be increased by providing the foot pad.

[0010] Preferably, the driving assembly includes a base plate, a second hydraulic cylinder and a guide plate. The base plate is fixed in the middle of the base frame. Two bases are welded on the top of the base plate. The two second hydraulic cylinders are hingedly matched on the top of the base plate through the two bases. A second hydraulic rod is provided at one end of the two second hydraulic cylinders. The two guide plates are respectively hinged at one end of the two second hydraulic rods away from the second hydraulic cylinders. The ends of the two guide plates away from the second hydraulic rods are fixed to one end of the support arm away from the bracket.

[0011] Preferably, the angle adjustment assembly includes a first rotating block, a second rotating block and a screw, the first rotating block rotatably cooperates with the bracket, the second rotating block rotatably cooperates with one end of the support arm close to the bracket, the screw penetrates the first rotating block, and the screw is threadably cooperated with the first rotating block, one end of the screw is rotatably cooperated in the second rotating block, and a circular limiting plate is welded at one end of the screw located in the second rotating block to prevent the screw from falling off the second rotating block, a rotating handle is fixed at one end of the screw away from the second rotating block, and the construction personnel rotate the rotating handle, and as the rotating handle rotates, the screw rotates in cooperation with the thread of the first rotating block, the rotation of the screw causes the first rotating block to move, thereby driving the bracket to rotate, and the first rotating block and the screw It is a threaded fit, the second rotating block is connected to the support arm, and one end of the screw is rotatably fitted in the second rotating block. As the bracket rotates, the first rotating block and the second rotating block will rotate at the same time, so that the screw continues to be matched with the first rotating block and the second rotating block. The threaded fit provides precise angle adjustment capability, and construction personnel can fine-tune the angle of the bracket by rotating the handle. At the same time, the threaded structure has a self-locking feature. Once the bracket and the support arm are adjusted to the desired angle, they can remain stable even under load and will not slide due to looseness. The angle adjustment component is compactly designed, occupies little space, and is easy to integrate into the support frame without affecting the layout and use of other components.

[0012] Preferably, a plurality of limit rods are vertically fixed to the bottom of the mounting plate, and pads are welded to the bottom of the limit rods. By fixing the limit rods at the bottom of the mounting plate, on the one hand, after the mounting plate is subjected to force to squeeze the spring downward, when the spring is compressed to a certain extent, with the support of the limit rods, the mounting plate and the support plate can provide strong support. At the same time, the limit rods can also prevent the spring from being compressed beyond its elastic limit.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model discloses a loose earth support frame for geotechnical engineering investigation, wherein the support arm of the support frame can be rotated and adjusted by a driving assembly, and the bracket can be adjusted by an angle adjustment assembly. By rotating the support arm and adjusting the angle of the bracket, on the one hand, in geotechnical engineering investigation, the terrain is often complex and changeable, and the angle adjustment capability of the support arm and the bracket enables the support frame to adapt to terrains of different slopes and shapes, ensuring stable support under various conditions. On the other hand, the support frame can better fit the surface of the loose earth, achieve closer contact and provide more uniform supporting force, effectively preventing the earth from being displaced or collapsed during the investigation, thereby improving the safety and reliability of the use of the support frame.

[0015] 2. The loose earth support frame for geotechnical engineering investigation described in the utility model has support legs and a base frame in the support assembly that are hingedly arranged, and the angle can be adjusted by driving a first hydraulic cylinder. By adjusting the angle of the support legs, the support frame can be adjusted to a suitable position regardless of whether it is flat terrain or a slope, ensuring stable support, thereby improving the adaptability of the support frame to the use site. By providing foot pads, the contact area between the bottom of the support legs and the ground can be increased, which helps to disperse the pressure of the support frame on the ground and avoid the ground being depressed. At the same time, a wider support base is provided, which increases the stability of the support frame, especially on soft or uneven ground, and can effectively prevent the support frame from tilting or sliding. In addition, the foot pads are hingedly arranged, and the angle can be adjusted to adapt to grounds of different slopes, further improving the adaptability of the support frame to the use terrain.

[0016] 3. The loose earthwork support frame for geotechnical engineering survey described in the utility model can ensure that the supporting force is evenly distributed on the entire loose earthwork by evenly arranging multiple support heads on the support plate and using the multiple support heads to support the loose earthwork, which helps to avoid local stress concentration and reduce earthwork settlement or deformation. At the same time, it can increase the stability of earthwork arrangement and reduce disturbance to the earthwork structure, thereby helping to maintain the original state of the earthwork and ensure the smooth progress of rock engineering survey. A spring is arranged in the support head. On the one hand, the spring makes the support head elastic and can automatically adjust to loose earthwork of different shapes and structures, ensuring that the support head can effectively contact the loose earthwork and provide stable support when the earthwork structure is uneven. On the other hand, the spring can provide a buffering effect, absorb the vibration caused by the external impact generated by the rock engineering survey, reduce the possibility of collapse of the loose earthwork due to the rock engineering survey and construction, thereby further improving the reliability of the support frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 The utility model is a schematic diagram of the overall structure of a preferred embodiment of a loose earth support frame for geotechnical engineering investigation provided by the utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the support assembly of the utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the drive assembly of the utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the angle adjustment component of the utility model.

[0022] Figure 5 This is a schematic diagram of the support head structure of the utility model.

[0023] In the figure: 1. chassis; 101. walking wheel; 102. support arm; 103. bracket; 104. support plate; 2. support assembly; 201. connecting seat; 202. support leg; 203. ear plate; 204. first hydraulic cylinder; 205. first hydraulic rod; 206. foot pad; 3. drive assembly; 301. bottom plate; 302. base; 303. second hydraulic cylinder; 304. second hydraulic rod; 305. guide plate; 4. angle adjustment assembly; 401. first rotating block; 402. second rotating block; 403. screw; 404. rotating handle; 5. support head; 501. fixing plate; 502. support rod; 503. mounting plate; 504. spring; 505. support plate; 506. limit rod. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments.

[0025] Example 1

[0026] like Figure 1-Figure 5 As shown, the loose earth support frame for geotechnical engineering investigation of the utility model comprises a base frame 1, an angle adjustment component 4 and a support head 5. Support components 2 are installed on both sides of the base frame 1, and the side of the base frame 1 is matched with the support component 2, which provides a good basic support for the support frame, so that the support frame can remain stable when carrying heavy objects or under unstable soil conditions. A support arm 102 is hinged on the top of the base frame 1, and a driving component 3 for driving the support arm 102 to rotate is installed in the middle of the base frame 1. The installation of the driving component 3 makes the rotation operation of the support arm 102 simpler. Construction personnel can adjust the angle and position of the support arm 102 through the driving component 3, reducing manpower requirements and operation complexity. A bracket 103 is hinged on the end of the support arm 102 away from the base frame 1, and the angle adjustment component 4 is arranged between the bracket 103 and the support arm 102. A support plate 104 is welded on the top of the bracket 103. The support arm 102 of the support frame can be rotated and adjusted by the driving component 3, and the bracket 103 can be adjusted by the angle adjustment component 4. Rotate the support arm 102 and adjust the angle of the bracket 103. On the one hand, in geotechnical engineering surveys, the terrain is often complex and changeable. The angle adjustment capability of the support arm 102 and the bracket 103 enables the support frame to adapt to terrains of different slopes and shapes, ensuring that stable support can be provided under various conditions. On the other hand, the support frame can better fit the surface of the loose earthwork, achieve closer contact and provide more uniform support force, effectively preventing the displacement or collapse of the earthwork during the survey process, thereby improving the safety and reliability of the use of the support frame. Several support heads 5 are evenly fixed on the top of the support plate 104. By evenly arranging multiple support heads 5 on the support plate 104 and using multiple support heads 5 to support the loose earthwork, it can ensure that the support force is evenly distributed on the entire loose earthwork, which helps to avoid local stress concentration and reduce earthwork settlement or deformation. At the same time, it can increase the stability of earthwork arrangement and reduce disturbance to the earthwork structure, thereby helping to maintain the original state of the earthwork and ensure the smooth progress of rock engineering surveys.

[0027] Among them, the support head 5 includes a fixing plate 501, a mounting plate 503 and a support disk 505. The fixing plate 501 is fixed on the top of the support plate 104. A plurality of support rods 502 are vertically welded on the fixing plate 501. The mounting plate 503 is sleeved on the plurality of support rods 502, and the mounting plate 503 and the plurality of support rods 502 are slidably matched. A spring 504 is sleeved on the support rod 502 between the mounting plate 503 and the fixing plate 501. The support disk 505 is mounted on the top of the mounting plate 503. The support head 5 is provided with a spring 504. On the one hand, the spring 504 makes the support head 5 elastic and can automatically adjust to adapt to different shapes. On the one hand, the spring 504 can provide a buffering effect, which can absorb the vibration caused by the external impact caused by rock engineering survey, and reduce the possibility of collapse of loose earth due to rock engineering survey and construction, thereby further improving the reliability of the support frame. On the other hand, the buffering effect of the spring 504 can reduce the damage to the earth structure when the support head 5 contacts the earth, which helps to maintain the integrity of the earth, thereby making the support frame more suitable for various geotechnical engineering surveys and construction environments.

[0028] Example 2

[0029] Based on Example 1, wheel frames are welded at the four corners of the base frame 1, and running wheels 101 are installed on the four wheel frames. The wheel frames and running wheels 101 at the four corners of the base frame 1 provide convenience for movement, so that the support frame can be quickly deployed to the required position.

[0030] The support assembly 2 includes a connecting seat 201, a supporting leg 202 and a first hydraulic cylinder 204. The connecting seat 201 is welded to the side of the base frame 1. The supporting leg 202 and the first hydraulic cylinder 204 are both hingedly matched on the connecting seat 201. A lug plate 203 is welded to the middle of the supporting leg 202. A first hydraulic rod 205 is provided at one end of the first hydraulic cylinder 204 away from the connecting seat 201. The end of the first hydraulic rod 205 away from the first hydraulic cylinder 204 is hinged to the lug plate 203. A foot pad 206 is hingedly provided at one end of the supporting leg 202 away from the connecting seat 201. The supporting leg 202 in the support assembly 2 is hingedly arranged with the base frame 1. The angle can be adjusted by the drive of the first hydraulic cylinder 204. By adjusting the angle of the support leg 202, the support frame can be adjusted to a suitable position regardless of flat terrain or slope, ensuring stable support, thereby improving the adaptability of the support frame to the site of use. By providing the foot pad 206, the contact area between the bottom of the support leg 202 and the ground can be increased, which helps to disperse the pressure of the support frame on the ground and avoid the ground being crushed. At the same time, a wider support base is provided, which increases the stability of the support frame, especially on soft or uneven ground, and can effectively prevent the support frame from tilting or sliding. In addition, the foot pad 206 is hingedly arranged, and the angle can be adjusted to adapt to grounds of different slopes, further improving the adaptability of the support frame to the terrain of use.

[0031] The driving assembly 3 includes a base plate 301, a second hydraulic cylinder 303 and a guide plate 305. The base plate 301 is fixed in the middle of the base frame 1. Two bases 302 are welded on the top of the base plate 301. The two second hydraulic cylinders 303 are hingedly matched on the top of the base plate 301 through the two bases 302. One end of the two second hydraulic cylinders 303 is provided with a second hydraulic rod 304. The two guide plates 305 are respectively hinged at one end of the two second hydraulic rods 304 away from the second hydraulic cylinders 303. The ends of the two guide plates 305 away from the second hydraulic rods 304 are fixed to the end of the support arm 102 away from the bracket 103. The second hydraulic cylinder 303, as a power source, can generate strong thrust or pulling force to effectively drive the support arm 102 to rotate.

[0032] The angle adjustment component 4 includes a first rotating block 401, a second rotating block 402 and a screw 403. The first rotating block 401 is rotatably engaged on the bracket 103, and the second rotating block 402 is rotatably engaged at one end of the support arm 102 close to the bracket 103. The screw 403 penetrates the first rotating block 401, and the screw 403 is threadedly engaged with the first rotating block 401. One end of the screw 403 is rotatably engaged in the second rotating block 402, and a circular limiting plate is welded at one end of the screw 403 located in the second rotating block 402 to prevent the screw 403 from falling off from the second rotating block 402. A rotating handle 404 is fixed at one end of the screw 403 away from the second rotating block 402. The construction personnel rotate the rotating handle 404. As the rotating handle 404 rotates, the screw 403 rotates in cooperation with the thread of the first rotating block 401. The rotation of the screw 403 causes the first rotating block 401 to move, thereby bringing The movable bracket 103 rotates, the first rotating block 401 and the screw 403 are threadedly matched, the second rotating block 402 is connected to the support arm 102, and one end of the screw 403 is rotatably matched in the second rotating block 402. As the bracket 103 rotates, the first rotating block 401 and the second rotating block 402 will rotate at the same time, so that the screw 403 continues to be matched with the first rotating block 401 and the second rotating block 402. The threaded match provides precise angle adjustment capability, and the construction personnel can fine-tune the angle of the bracket 103 by rotating the handle 404. At the same time, the threaded structure has a self-locking feature. Once the bracket 103 and the support arm 102 are adjusted to the desired angle, they can remain stable even under load and will not slide due to looseness. The angle adjustment component 4 is compactly designed and occupies little space, which is easy to integrate into the support frame and will not affect the layout and use of other components.

[0033] A number of limit rods 506 are vertically fixed to the bottom of the mounting plate 503, and pads are welded to the bottom of the limit rods 506. By fixing the limit rods 506 at the bottom of the mounting plate 503, on the one hand, after the mounting plate 503 is forced downward to squeeze the spring 504, when the spring 504 is compressed to a certain extent, with the support of the limit rods 506, the mounting plate 503 and the support plate 505 can provide strong support. At the same time, the limit rods 506 can also prevent the spring 504 from being compressed beyond its elastic limit, thereby protecting the entire support head 5 assembly from damage.

[0034] Example 3

[0035] When in use, first, the support frame is moved to the working area of ​​rock engineering survey using the walking wheels 101. After determining the earthwork that needs to be supported, the support frame is moved under the earthwork. Then, the support legs 202 are driven to rotate by the first hydraulic cylinder 204 to support the support legs 202 on the ground. Finally, the support arms 102 are driven to rotate by the second hydraulic cylinder 303 in the drive assembly 3 to send the bracket 103 under the earthwork supporting area. At the same time, the handle 404 is turned to adjust the angle of the bracket 103 so that the support plate 104 on the bracket 103 is aligned with the support area at the bottom or side of the earthwork, and the support head 5 on the support plate 104 is used to squeeze and support the earthwork.

[0036] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A loose earth support frame for geotechnical engineering investigation, characterized by: The invention comprises a base frame (1), an angle adjustment component (4) and a support head (5), and is characterized in that: support components (2) are installed on both sides of the base frame (1), a support arm (102) is hingedly connected to the top of the base frame (1), a driving component (3) for driving the support arm (102) to rotate is installed in the middle of the base frame (1), a bracket (103) is hingedly connected to one end of the support arm (102) away from the base frame (1), the angle adjustment component (4) is arranged between the bracket (103) and the support arm (102), a support plate (104) is welded to the top of the bracket (103), and a plurality of support heads (5) are evenly fixed on the top of the support plate (104).

2. The loose earth support frame for geotechnical engineering investigation according to claim 1 is characterized in that: The support head (5) comprises a fixing plate (501), a mounting plate (503) and a support plate (505); the fixing plate (501) is fixed on the top of the support plate (104); a plurality of support rods (502) are vertically welded on the fixing plate (501); the mounting plate (503) is sleeved on the plurality of support rods (502), and the mounting plate (503) and the plurality of support rods (502) are slidably matched; a spring (504) is sleeved on the support rod (502) and is located between the mounting plate (503) and the fixing plate (501); and the support plate (505) is mounted on the top of the mounting plate (503).

3. The loose earth support frame for geotechnical engineering investigation according to claim 1, characterized in that: Wheel frames are welded to the four corners of the base frame (1), and travel wheels (101) are installed on the four wheel frames.

4. The loose earth support frame for geotechnical engineering investigation according to claim 1, characterized in that: The support assembly (2) comprises a connecting seat (201), a supporting leg (202) and a first hydraulic cylinder (204); the connecting seat (201) is welded to the side of the base frame (1); the supporting leg (202) and the first hydraulic cylinder (204) are both hingedly coupled to the connecting seat (201); an ear plate (203) is welded to the middle of the supporting leg (202); a first hydraulic rod (205) is provided at one end of the first hydraulic cylinder (204) away from the connecting seat (201); an end of the first hydraulic rod (205) away from the first hydraulic cylinder (204) is hingedly coupled to the ear plate (203); and a foot pad (206) is hingedly coupled to one end of the supporting leg (202) away from the connecting seat (201).

5. The loose earth support frame for geotechnical engineering investigation according to claim 3 is characterized in that: The driving assembly (3) comprises a base plate (301), a second hydraulic cylinder (303) and a guide plate (305); the base plate (301) is fixed to the middle of the base frame (1); two bases (302) are symmetrically welded on the base plate (301); the two second hydraulic cylinders (303) are hingedly matched on the top of the base plate (301) through the two bases (302); one end of the two second hydraulic cylinders (303) is provided with a second hydraulic rod (304); the two guide plates (305) are respectively hinged to one end of the two second hydraulic rods (304) away from the second hydraulic cylinders (303); and one end of the two guide plates (305) away from the second hydraulic rod (304) is fixed to one end of the support arm (102) away from the bracket (103).

6. The loose earth support frame for geotechnical engineering investigation according to claim 5, characterized in that: The angle adjustment assembly (4) comprises a first rotating block (401), a second rotating block (402) and a screw rod (403); the first rotating block (401) is rotatably engaged with the bracket (103); the second rotating block (402) is rotatably engaged with one end of the support arm (102) close to the bracket (103); the screw rod (403) passes through the first rotating block (401), and the screw rod (403) is threadedly engaged with the first rotating block (401); one end of the screw rod (403) is rotatably engaged in the second rotating block (402); one end of the screw rod (403) is located in the second rotating block (402) and is welded with a circular limiting plate for preventing the screw rod (403) from falling out of the second rotating block (402); and a rotating handle (404) is fixed to one end of the screw rod (403) away from the second rotating block (402).

7. The loose earth support frame for geotechnical engineering investigation according to claim 2, characterized in that: A plurality of limiting rods (506) are vertically fixed to the bottom of the mounting plate (503), and pads are welded to the bottoms of the plurality of limiting rods (506).

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