CN112127396A - Be used for high strain measurement stake from aversion universal platform - Google Patents
Be used for high strain measurement stake from aversion universal platform Download PDFInfo
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- CN112127396A CN112127396A CN202011137101.5A CN202011137101A CN112127396A CN 112127396 A CN112127396 A CN 112127396A CN 202011137101 A CN202011137101 A CN 202011137101A CN 112127396 A CN112127396 A CN 112127396A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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Abstract
The invention relates to a self-displacement general platform for high-strain measuring piles, which comprises a base, wherein the base is used for being connected to the lower end of a vertical bearing capacity testing guide frame of a high-strain measuring mono-pile, the two sides of the base are respectively connected with a lifting support arm for adjusting the height of the base, the base comprises an X-axis moving frame and a Y-axis moving frame, the X-axis moving frame and the Y-axis moving frame are connected in a sliding way, and the lifting displacement and the horizontal displacement of the base are staggered during self-displacement. Compared with the prior art, the method has stronger adaptability to the field and can reduce the transfer cost.
Description
Technical Field
The invention relates to the field of building strain force testing equipment, in particular to a self-displacement universal platform for a high strain measuring pile.
Background
At present, the vertical bearing capacity test of a high strain detection single pile mainly adopts an ultra-large truck crane to hoist a heavy hammer and a guide frame to a detection point, the heavy hammer is lifted to a required height through the ultra-large truck crane, and the heavy hammer falls off through a self-releasing clamp, so that a free-falling hammer impacts a to-be-detected pile; after finishing one detection point, continuously moving the large equipment to a second detection point by the ultra-large truck crane, and repeating the working process. The problems and disadvantages of the prior art are: firstly, the ground energy is required to meet the requirements of walking, positioning and hoisting of an ultra-large truck crane; thirdly, for complex sites, such as the detection of the bearing capacity of pile foundation engineering in deep foundation pits or large excavation sites, the test requirement can be met only by greatly improving the tonnage model of the truck crane, the cost of high strain detection is greatly increased, and a large number of projects cannot be used for detecting the vertical bearing capacity of a single pile due to the fact that the hoisting requirement cannot be met.
In order to solve the problems, the invention designs a self-shifting universal platform for a high-strain measuring pile, the universal platform is combined with a high-strain measuring single-pile vertical bearing capacity testing guide frame, the guide frame can be driven to move, a heavy hammer can be lifted by a hydraulic system after the guide frame is in place, the detected pile is impacted by a free falling hammer to complete the on-site high-strain measuring work, the site adaptability of on-site measurement is greatly improved, and the problem of the bearing capacity detection of the engineering pile after foundation pit excavation is solved.
Disclosure of Invention
In order to solve the problems, the invention provides a self-shifting general platform for a high-strain measuring pile, which has the advantages of simple structure and low manufacturing cost, and can greatly improve the field adaptability of field detection, thereby solving the problem of detecting the bearing capacity of an engineering pile after foundation pit excavation.
According to the technical scheme, the self-displacement general platform for the high-strain test pile comprises a base connected to the lower end of a vertical bearing capacity test guide frame of a high-strain test single pile, lifting support arms used for adjusting the height of the base are connected to two sides of the base respectively, the base comprises an X-axis moving frame and a Y-axis moving frame, the X-axis moving frame and the Y-axis moving frame are connected in a sliding mode, and during self-displacement, lifting displacement and horizontal displacement of the base are conducted in a staggered mode.
Preferably, the X-axis moving frame comprises a first base frame, the front end and the rear end of the first base frame are connected with a ground cushion beam, and the ground cushion beam is slidably connected to the bottom of the first base frame through an X-axis sliding mechanism.
Preferably, the X-axis sliding mechanism includes an X-axis automatic push rod for driving the ground pad beam and the first base frame to slide relatively, and a first limit guide block is matched with the inner side and/or the outer side of the ground pad beam and the first base frame.
Preferably, the Y-axis moving frame comprises a second base frame, the second base frame is in sliding fit with the X-axis moving frame through a second limiting guide block, and a Y-axis automatic push rod used for driving the X-axis moving frame and the Y-axis moving frame to slide relatively is mounted on the second base frame.
Preferably, the lifting support arm comprises a telescopic arm, the tail end of the telescopic arm is connected with the lifting arm, and the telescopic direction of the telescopic arm is parallel to the moving direction of the X-axis moving frame.
Preferably, both ends all are equipped with the sleeve roof beam around the Y axle removes the frame, the both ends of sleeve roof beam are provided with respectively flexible arm, flexible arm includes fixed mounting flexible push rod and the sliding fit in the sleeve roof beam, flexible push rod's drive end is connected flexible roof beam.
Preferably, the inner cavities of the cross beams or longitudinal beams of the X-axis moving frame and the Y-axis moving frame are respectively provided with an inner beam supporting seat, each inner beam supporting seat comprises a pulley seat and a supporting frame body connected to the pulley seat, and the pulley seats extend out of bottom hole grooves of the cross beams or longitudinal beams of the X-axis moving frame and the Y-axis moving frame.
Preferably, the edge of the joint of the first base frame and the ground cushion beam is provided with a convex strip, and the first limiting guide block is matched with the convex strip of the joint of the first base frame and the ground cushion beam.
Preferably, the insides of the beams and the stringers of the X-axis moving frame and the Y-axis moving frame are hollow and provided with X supporting plates, and the insides of the beams and the stringers of the X-axis moving frame and the Y-axis moving frame are divided into at least 3 inner cavities.
Preferably, support the support body include with the bottom plate that the pulley holder is connected, be connected with the riser on the bottom plate, the both sides of riser are connected with more than or less 1 support riser respectively, support the support body joint and be in the inner chamber of crossbeam or longeron that X axle removed the frame, Y axle removed the frame.
Compared with the prior art, the invention has the following beneficial effects:
the general platform for the self-displacement of the high-strain detection single pile has the advantages of simple structure, convenience in use and low preparation cost, can be combined with the vertical bearing capacity test guide frame of the high-strain detection single pile, can drive the vertical bearing capacity test guide frame of the high-strain detection single pile to be transferred to the next transfer point by controlling the automatic displacement of the general platform, does not need to depend on the hoisting transfer of an ultra-large automobile, has stronger adaptability to a field compared with the prior art, and can reduce the transfer cost.
Drawings
Fig. 1 is a first structural schematic diagram of a self-shifting universal platform for a high-strain pile measurement according to the present invention;
FIG. 2 is a second structural schematic diagram of the self-shifting universal platform for high strain gauges according to the present invention;
fig. 3 is a structural diagram of a longitudinal beam of an X-axis moving frame for a high-strain-gauge self-displacement universal platform in the embodiment;
fig. 4 is a structural diagram of an inner beam support seat of the self-shifting universal platform for a high-strain measurement pile in the embodiment;
fig. 5 is a schematic connection diagram of a beam of the beam inner support seat and the X-axis moving frame of the self-shifting universal platform for the high-strain measurement pile in the embodiment;
FIG. 6 is a perspective view of the structure of the self-displacing universal platform for high strain gauges in the present embodiment;
fig. 7 is a schematic connection diagram of the lifting support arm and the sleeve beam of the self-shifting universal platform for a high strain gage in this embodiment.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-6, the invention provides a self-displacement general platform for a high-strain measuring pile, which comprises a base connected to the lower end of a vertical bearing capacity testing guide frame of a high-strain measuring single pile, wherein lifting support arms 3 used for adjusting the height of the base are respectively connected to two sides of the base, the base comprises an X-axis moving frame 1 and a Y-axis moving frame 2, the X-axis moving frame 1 and the Y-axis moving frame 2 are connected in a sliding manner, and during self-displacement, the lifting displacement and the horizontal displacement of the base are performed in a staggered manner.
The X-axis moving frame 1 comprises a first base frame 11, the first base frame 11 is of an internal hollow frame structure, the front end and the rear end of the first base frame 11 are connected with ground cushion beams 12, and the ground cushion beams 12 are connected to the bottom of the first base frame 11 in a sliding mode through an X-axis sliding mechanism. In detail, in this embodiment, the first base frame 11 includes two cross beams and two longitudinal beams, two the cross beams and two the longitudinal beams are connected to form four side frames, and two the floor mat beams 12 are respectively connected to the lower ends of the cross beams at the front and rear ends of the first base frame 1. The X-axis sliding mechanism comprises an X-axis automatic push rod 13 which drives the ground cushion beam 12 and the first base frame 11 to slide relatively, and the ground cushion beam 12 and the inner side and the outer side of the first base frame 11 are matched with a first limiting guide block 14.
In this embodiment, the ground mat roof beam 12 with the inboard and the outside of first base frame 11 junction are equipped with three respectively first spacing guide block 14, the junction edge of first base frame 11 and ground mat roof beam 12 all is equipped with the sand grip, first spacing guide block 13 cooperation sets up on the sand grip of the junction of first base frame 11 and ground mat roof beam 12. More in detail, be equipped with the guide way on the first spacing guide block 14, the sand grip cooperates with the guide way, first spacing guide block 14 can be "L" shaped plate structure, "[" shaped plate structure or "E" shaped plate structure, bolt fixed connection is passed through to the one end of first spacing guide block 14 first base frame 11, the other end with the side surface contact of ground bed hedgehopping 12 under the thrust of X axle automatic pushing rod 13, ground bed hedgehopping 12, first base frame 11 relative slip.
The Y-axis moving frame 2 comprises a second base frame 21, the second base frame 21 is in sliding fit with the X-axis moving frame 1 through a second limiting guide block 22, and a Y-axis automatic push rod 23 used for driving the X-axis moving frame 1 and the Y-axis moving frame 2 to slide relatively is mounted on the second base frame 21. More in detail, second base frame 21 with the inboard and the outside edge of first base frame 11 junction all are equipped with the sand grip, be equipped with the guide way on the spacing guide block 22 of second, the sand grip cooperates with the guide way, first spacing guide block 14 can be "L" shaped plate structure, "[" shaped plate structure or "E" shaped plate structure, in this embodiment, bolt fixed connection is passed through to the one end of the spacing guide block 22 of second base frame 21, the other end with the side surface contact of first base frame 11 under the thrust or the pulling force of Y axle automatic pushing rod 23, first base frame 11, second base frame 21 relative slip.
In detail, the second base frame 21 is a hollow frame structure, the second base frame 21 includes two cross beams and two longitudinal beams, the cross beams and the longitudinal beams are connected to form four side frames, and the second limiting guide block 22 is arranged on the convex strips on the inner side and the outer side of the longitudinal beams of the first base frame 11 and the second base frame 21.
Referring to fig. 7, the lifting support arm 3 includes a telescopic arm 31, a lifting arm 32 is connected to an end of the telescopic arm 31, and a telescopic direction of the telescopic arm 31 is parallel to a moving direction of the X-axis moving frame 1. The front end and the rear end of the Y-axis moving frame 2 are both provided with sleeve beams 24, the two ends of each sleeve beam 24 are respectively provided with the telescopic arms 31, each telescopic arm 31 comprises a telescopic push rod 311 fixedly installed in each sleeve beam 24 and a telescopic beam 312 arranged in each sleeve beam 24 in a sliding mode, and the driving end of each telescopic push rod 311 is connected with the corresponding telescopic beam 312. In this embodiment, the lifting arm 32 is connected to the end of the telescopic beam 312, the telescopic arm 31 is perpendicular to the lifting arm 32, and the bottom of the lifting arm 32 is connected to the pad 33. The distance between the lifting arm 32 and the base can be adjusted through the telescopic arm 31, so that the universal platform can meet the requirement for detecting the bearing capacity of the engineering piles of foundation pits with different sizes.
In more detail, the X-axis automatic push rod 13, the Y-axis automatic push rod 23, the telescopic push rod 311, and the lifting arm 32 may be selected from an air cylinder, an electric push rod, or an oil cylinder.
In addition, in order to improve the bearing capacity and the moving capacity of the universal platform, the beam inner support seat 4 is installed in both the beam of the X-axis moving frame 1 and the longitudinal beam of the Y-axis moving frame 2, the beam inner support seat 4 includes a pulley seat 41 and a support frame body 42 connected to the pulley seat 41, the pulley seat 41 extends from the bottom hole grooves of the beam of the X-axis moving frame 1 and the longitudinal beam of the Y-axis moving frame 2, and a pulley at the bottom of the pulley seat 41 is in slidable contact with the upper end surface of the ground bolster 12 and the upper end surface of the longitudinal beam of the first base frame 11. The support frame body 42 may reinforce the strength of the cross beam of the X-axis moving frame 1 and the longitudinal beam of the Y-axis moving frame 2, and the pulley seat 41 may reduce the friction between the first base frame 11 and the ground bolster 12, and between the second base frame 21 and the first base frame 11.
More in detail, support the support body 42 include with the bottom plate 421 that pulley holder 41 is connected, be connected with riser 422 on the bottom plate 421, riser 422's both sides are connected with respectively and are no less than 3 and support riser 423, support the support body 42 with the inner chamber of the crossbeam of X axle removal frame 1, the inner chamber looks adaptation of the longeron of Y axle removal frame 2, and the joint is in the inner chamber of X axle removal frame 1, Y axle removal frame 2 is provided with the bottom of the inner chamber of support seat 4 in the roof beam be equipped with pulley holder 41 assorted hole groove, pulley holder 41's pulley certainly the hole groove extends.
In addition, the insides of the cross beams and the longitudinal beams of the X-axis moving frame 1 and the Y-axis moving frame 2 are hollow and provided with X supporting plates 10, the insides of the cross beams and the longitudinal beams of the X-axis moving frame 1 and the Y-axis moving frame 2 are divided into not less than 3 inner cavities, the beam inner supporting seats 4 are arranged in one or more than one inner cavities of the cross beams or the longitudinal beams, in the embodiment, X is not less than 3, the larger the X value is, the more the supporting plates 10 are arranged in the cross beams and the longitudinal beams, and the higher the strength of the cross beams and the longitudinal beams is. The support plates 10 are used for enhancing the strength of the cross beams and the longitudinal beams, and the support plates 10 can be arranged in the cross beams and the longitudinal beams at equal intervals or at unequal intervals.
The working principle is as follows: when the self-displacement general platform for the high-strain pile measuring is moved rightwards, the lifting arm 32 is contracted upwards to enable the ground pad beam 12 to be contacted with the ground, the base is pressed on the ground, the X-axis automatic push rod 13 is extended to push the first base frame 11 and the second base frame 21 to synchronously move rightwards along the X-axis direction, after the movement of the first base frame 11 is stopped, the lifting arm 32 is extended downwards to lift the base, at the moment, the ground pad beam 12 is lifted off the ground, the X-axis automatic push rod 13 is contracted to pull the ground pad beam 12 to move towards the displacement direction of the first base frame 11, and the general platform can be automatically moved rightwards by repeating the action;
when the self-displacement general platform for the high-strain pile testing moves leftwards, the lifting arm 32 extends downwards to lift the base, at the moment, the ground pad beam 12 is lifted off the ground, the X-axis automatic push rod 13 extends to push the ground pad beam 12 to move leftwards along the X-axis direction, after the movement of the ground pad beam 12 is stopped, the lifting arm 32 contracts upwards to enable the ground pad beam 12 to be in contact with the ground, the base bears the ground, the X-axis automatic push rod 13 contracts to pull the first base frame 11 and the second base frame 21 to synchronously move leftwards along the X-axis direction, and the general platform can automatically move leftwards by repeating the action;
when the self-displacement general platform for high-strain pile measurement moves forwards, the lifting arm 32 contracts upwards to enable the ground pad beam 12 to be in contact with the ground, the base is pressed on the ground, the Y-axis automatic push rod 23 extends and pushes the second base frame 21 to move forwards along the Y-axis direction, after the movement of the second base frame 21 is stopped, the lifting arm 32 extends downwards to enable the ground pad beam 12 to lift off the ground, the Y-axis automatic push rod 23 contracts to pull the first base frame 11 to move towards the displacement direction of the second base frame 21, and the general platform can automatically move forwards by repeating the action;
when the self-displacement general platform for the high-strain pile is moved backwards, the lifting arm 32 extends downwards to lift the ground pad beam 12 off the ground, the Y-axis automatic push rod 23 extends to push the first base frame 11 to move backwards along the Y-axis direction, after the first base frame 11 stops moving, the lifting arm 32 contracts upwards to contact the ground pad beam 12 with the ground, the base bears the ground, the Y-axis automatic push rod 23 contracts to pull the second base frame 21 to move towards the displacement direction of the first base frame 11, and the general platform can automatically move backwards by repeating the action;
when the self-displacement universal platform for high-strain pile measurement is reversed, the ground pad beam 12 is in contact with the ground, the base is pressed on the ground, the X-axis automatic push rod 13 arranged on the front side of the first base frame 11 pushes the first base frame 11 and the second base frame 21 to synchronously move leftwards along the X-axis direction, the X-axis automatic push rod 13 arranged on the rear side of the first base frame 11 drives the first base frame 11 and the second base frame 21 to synchronously move rightwards along the X-axis direction, on the contrary, the X-axis automatic push rod 13 arranged on the front side of the first base frame 11 pushes the first base frame 11 and the second base frame 21 to synchronously move rightwards along the X-axis direction, and the X-axis automatic push rod 13 arranged on the rear side of the first base frame 11 drives the first base frame 11 and the second base frame 21 to synchronously move leftwards along the X-axis direction, also, repeating this action may cause the universal platform to complete a 360 degree turn or change direction.
The general platform for the self-displacement of the high-strain detection single pile has the advantages of simple structure, convenience in use and low preparation cost, can be combined with the vertical bearing capacity test guide frame of the high-strain detection single pile, can drive the vertical bearing capacity test guide frame of the high-strain detection single pile to be transferred to the next transfer point by controlling the automatic displacement of the general platform, does not need to depend on the hoisting transfer of an ultra-large automobile, has stronger adaptability to a field compared with the prior art, and can reduce the transfer cost.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. The utility model provides a be used for high strain measurement stake from aversion universal platform, a serial communication port, includes the base, the both sides of base are connected with respectively and are used for the adjustment lift support arm (3) of base height, the base includes that X axle removes frame (1), Y axle removal frame (2), X axle removal frame (1) and Y axle removal frame (2) slidable connection, during from the displacement, the lift displacement and the horizontal displacement of base are crisscross goes on.
2. The self-displacing universal platform for high strain gages according to claim 1, wherein: the X-axis moving frame (1) comprises a first base frame (11), the front end and the rear end of the first base frame (11) are connected with a ground cushion beam (12), and the ground cushion beam (12) is connected with the bottom of the first base frame (11) in a sliding mode through an X-axis sliding mechanism.
3. The self-displacing universal platform for high strain gages according to claim 2, wherein: the X-axis sliding mechanism comprises an X-axis automatic push rod (13) for driving the ground cushion beam (12) and the first base frame (11) to slide relatively, and a first limiting guide block (14) is matched on the inner side and/or the outer side of the ground cushion beam (12) and the first base frame (11).
4. The self-displacing universal platform for high strain gages according to claim 1, wherein: y axle removes frame (2) and includes second base frame (21), second base frame (21) through second spacing guide block (22) with X axle removes frame (1) slidable formula cooperation, install on second base frame (21) and be used for the drive X axle removes frame (1) and Y axle and removes frame (2) relative gliding Y axle automatic push rod (23).
5. The self-displacing universal platform for high strain gages according to claim 1, wherein: the lifting support arm (3) comprises a telescopic arm (31), the tail end of the telescopic arm (31) is connected with a lifting arm (32), and the telescopic direction of the telescopic arm (31) is parallel to the moving direction of the X-axis moving frame (1).
6. The self-displacing universal platform for high strain gages according to claim 5, wherein: the Y-axis moving frame is characterized in that sleeve beams (24) are arranged at the front end and the rear end of the Y-axis moving frame (2), telescopic arms (31) are arranged at the two ends of the sleeve beams (24) respectively, each telescopic arm (31) comprises a telescopic push rod (311) fixedly installed in the sleeve beam (24) and a telescopic beam (312) arranged in the sleeve beam (24) in a sliding mode, and the driving end of each telescopic push rod (311) is connected with the telescopic beam (312).
7. The self-displacing universal platform for high strain gages according to claim 1, wherein: beam inner supporting seats (4) are installed in inner cavities of cross beams or longitudinal beams of the X-axis moving frame (1) and the Y-axis moving frame (2), each beam inner supporting seat (4) comprises a pulley seat (41) and a supporting frame body (42) connected to the pulley seat (41), and the pulley seats (41) extend out of bottom hole grooves of the cross beams or the longitudinal beams of the X-axis moving frame (1) and the Y-axis moving frame (2).
8. A self-displacing universal platform for high strain gages according to claim 3, wherein: the edge of the joint of the first base frame (11) and the ground cushion beam (12) is provided with a convex strip, and the first limiting guide block (14) is matched with the convex strip of the joint of the first base frame (11) and the ground cushion beam (12).
9. The self-displacing universal platform for high strain gages according to claim 7, wherein: the X-axis moving frame (1), the Y-axis moving frame (2) and the longitudinal beam are hollow inside and provided with X supporting plates (10), and the X-axis moving frame (1), the Y-axis moving frame (2) and the longitudinal beam are divided into at least 3 inner cavities.
10. The self-displacing universal platform for high strain gages according to claim 7, wherein: support body (42) include with bottom plate (421) that pulley holder (41) are connected, be connected with riser (422) on bottom plate (421), the both sides of riser (422) are connected with 1 piece respectively and support riser (423) not at least, support body (42) joint is in the inner chamber of crossbeam or longeron of X axle removal frame (1), Y axle removal frame (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011137101.5A CN112127396A (en) | 2020-10-22 | 2020-10-22 | Be used for high strain measurement stake from aversion universal platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011137101.5A CN112127396A (en) | 2020-10-22 | 2020-10-22 | Be used for high strain measurement stake from aversion universal platform |
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| Publication Number | Publication Date |
|---|---|
| CN112127396A true CN112127396A (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011137101.5A Pending CN112127396A (en) | 2020-10-22 | 2020-10-22 | Be used for high strain measurement stake from aversion universal platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217308A (en) * | 2022-08-24 | 2022-10-21 | 铁科院(深圳)特种工程有限公司 | Self-walking operating platform suitable for steep slope construction operation |
-
2020
- 2020-10-22 CN CN202011137101.5A patent/CN112127396A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217308A (en) * | 2022-08-24 | 2022-10-21 | 铁科院(深圳)特种工程有限公司 | Self-walking operating platform suitable for steep slope construction operation |
| CN115217308B (en) * | 2022-08-24 | 2024-02-20 | 铁科院(深圳)特种工程有限公司 | Self-walking type operation platform suitable for steep slope construction operation |
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