Installation protection device for ground displacement monitoring instrument

Abstract

The application relates to a mounting protection device of a ground displacement monitor, which comprises a supporting column, the lower end of the supporting column is provided with a rotating shaft parallel to the supporting column, a push block is connected in series on the rotating shaft, the upper end of the rotating shaft is connected with the supporting column, and a connecting head is connected with the lower end of the rotating shaft; the push block and the supporting column are single-degree-of-freedom slidingly connected along the length direction of the supporting column, a first connecting rod and a second connecting rod are arranged between the push block and the connecting head, the two ends of the first connecting rod and the second connecting rod are hingedly connected, the two opposite ends of the first connecting rod and the second connecting rod are respectively hingedly connected with the push block and the connecting head, the rotating track planes of the first connecting rod and the second connecting rod are parallel to the sliding direction of the push block; a driving part is connected with the push block, and the driving part is used for driving the push block to slide on the supporting column. The mounting protection device can solve the problem that the supporting column has the risk of toppling in a long-time use process, and the normal monitoring work of the ground displacement monitor is affected.

Description

Technical Field

[0001] This invention relates to the field of geological monitoring technology, and specifically to an installation and protection device for a ground displacement monitoring instrument. Background Technology

[0002] Geological monitoring is a method of monitoring geological hazards. It involves using various technologies and methods to measure and monitor geological hazard activities and the dynamic changes of various triggering factors. It is a crucial basis for predicting and forecasting geological hazards, and therefore an important aspect of disaster reduction and prevention. Among the various equipment used for geological monitoring is the ground displacement monitoring instrument, which monitors changes in ground displacement to achieve the monitoring effect.

[0003] In existing technologies, ground displacement monitoring instruments are typically fixedly installed on support columns, which are then secured to the ground using expansion bolts and other connectors. However, due to external factors such as earthquakes and wind, the connection between the support column and the ground frequently experiences compression and collisions, leading to a gradual loosening of the connection. This can result in the support column potentially tipping over during prolonged use, affecting the normal monitoring operation of the ground displacement monitoring instrument. Therefore, we provide an installation protection device for ground displacement monitoring instruments. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an installation protection device for a ground displacement monitoring instrument, so as to solve the problem that the support column in the prior art has the risk of tipping over during long-term use, which affects the normal monitoring work of the ground displacement monitoring instrument.

[0005] This invention is achieved through the following technical solution: An installation protection device for a ground displacement monitoring instrument includes a support column, a rotating shaft parallel to the support column at the lower end of the support column, a push block connected in series on the rotating shaft, an upper end of the rotating shaft connected to the support column, and a connector connected to the lower end of the rotating shaft. The push block and the support column are slidably connected along the length of the support column with a single degree of freedom. A first link and a second link are provided between the push block and the connector. The two ends of the first link and the second link facing each other are hinged together, and the two ends facing away from each other are hinged together with the push block and the connector, respectively. The rotation trajectory plane of the first link and the rotation trajectory plane of the second link are both parallel to the sliding direction of the push block. The push block is connected to a drive unit, which is used to drive the push block to slide on the support column.

[0006] Furthermore, a support plate is provided outside the rotating shaft, and the two ends of the first connecting rod and the second connecting rod facing each other are hinged to the surface of the support plate facing the rotating shaft, and are parallel to the two rotation center lines on the support plate.

[0007] Furthermore, multiple support plates are provided, and the multiple support plates are arranged in a circular array with the rotating shaft as the center; Both the first and second links are provided in multiple forms, and each is set in a one-to-one correspondence with multiple support plates.

[0008] Furthermore, a slide bar and two limiting rods are provided between any two adjacent support plates, and the slide bar is slidably connected to the support column along the length of the support column; The two limiting rods are hinged at their opposite ends and hinged to the slide bar and the connector respectively, and the rotation trajectory plane of the two limiting rods is parallel to the sliding direction of the slide bar. A linkage component is provided between the push block and the slide bar. When the push block slides on the support column, the linkage component drives the slide bar to slide on the support column.

[0009] Furthermore, the linkage component includes a protrusion and a rack, one end of the protrusion being connected to the side of the push block facing the slide bar, and the other end being inserted into the tooth groove of the rack; The rack and slide bar are fixedly connected to the side of the protrusion facing the rack.

[0010] Furthermore, the protrusion and the push block are slidably connected radially along the rotating shaft, and the end of the protrusion facing the rack is wedge-shaped with the inclined surface located on the side facing the support column; A second spring is provided between the protrusion and the push block. One end of the second spring is fixedly connected to the protrusion and the other end is fixedly connected to the push block. When the second spring is naturally extended, the protrusion is inserted into the tooth groove of the rack.

[0011] Furthermore, the rotating shaft is rotatably connected to the support column, and the rotating shaft has an external thread in the middle and is connected to the push block through a threaded engagement. The connector is sleeved outside the rotating shaft and rotates in conjunction with the rotating shaft.

[0012] Furthermore, the drive unit includes a first spring sleeved outside the rotating shaft. One end of the first spring is fixedly connected to the support column, and the other end is fixedly connected to the push block. When the first spring is in its naturally extended state, the push block abuts against the connector.

[0013] Furthermore, the support column is a hollow structure with openings at both the top and bottom. The upper end of the rotating shaft is inserted into the support column and extends out from the upper opening of the support column, and the rotating shaft is rotatably engaged with the support column. The drive unit also includes a wind turbine, the axle of which is fixedly connected to the upper end of the shaft.

[0014] The beneficial effects of this invention are as follows: This protective device for installing a ground displacement monitor fixes a support column to the ground and inserts the portion of the rotating shaft protruding from the lower end of the support column below the ground to distribute and reduce the lateral load at the connection between the support column and the ground, making the support column more stable on the ground. At the same time, the drive unit drives the push block away from the support column, causing the first and second connecting rods to rotate relative to each other, reducing the angle between them. As a result, the two ends of the hinged first and second connecting rods move away from the rotating shaft and abut against the rock and soil below the ground, thus supporting the rotating shaft and limiting the free swaying of the rotating shaft and the support column, improving the stability of the ground displacement monitor installed on the support column.

[0015] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of the planar structure of an embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of the push block and the connector in an embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the pusher block in an embodiment of the present invention; Figure 5 for Figure 2 Sectional view of AA; Figure 6 for Figure 2 Cross-sectional view of BB; Figure 7 for Figure 2 Enlarged view of point C in the middle; Figure 8 for Figure 3 Enlarged view of point D in the middle.

[0017] In the figure: support column 11, flange 111, sliding hole 112, rotating shaft 12, push block 13, protrusion 131, second spring 132, connecting bar 133, connector 14, first connecting rod 15, second connecting rod 16, support plate 17; Slide bar 21, rack 211, limit rod 22; First spring 31, wind turbine 32; 4. Ground displacement monitoring instrument. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the above description of the present invention, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0023] Please see Figure 1-8 The present invention provides a technical solution: an installation protection device for a ground displacement monitoring instrument, including a support column 11, a rotating shaft 12 parallel to the support column 11 and a push block 13 connected in series on the rotating shaft 12 at the lower end of the support column 11, the upper end of the rotating shaft 12 being connected to the support column 11, and a connector 14 being connected to the lower end of the rotating shaft 12. The push block 13 and the support column 11 are slidably connected along the length of the support column 11 with a single degree of freedom. A first connecting rod 15 and a second connecting rod 16 are provided between the push block 13 and the connector 14. The two ends of the first connecting rod 15 and the second connecting rod 16 facing each other are hinged together, and the two ends facing away from each other are respectively hinged to the push block 13 and the connector 14. The rotation trajectory plane of the first connecting rod 15 and the rotation trajectory plane of the second connecting rod 16 are both parallel to the sliding direction of the push block 13. The push block 13 is connected to a driving part, which is used to drive the push block 13 to slide on the support column 11.

[0024] The ground displacement monitoring instrument 4 is a GNSS displacement monitoring station, which is fixedly installed on the support column 11 with clamps.

[0025] A flange 111 is fixedly connected to the lower end of the support column 11. The flange 111 supports the support column 11, thereby increasing the contact area between the support column 11 and the ground, and thus making the support column 11 stand stably on the ground. A sliding hole 112 along the length of the support column 11 is opened on the lower end surface of the support column 11. A connecting strip 133 is fixedly connected to the push block 13. The upper end of the connecting strip 133 is inserted into the sliding hole 112 and slides with the sliding hole 112 to support the push block 13. Multiple connecting strips 133 are provided and arranged in a circular array around the rotating shaft 12. Multiple sliding holes 112 are opened on the support column 11, corresponding one-to-one with the multiple connecting strips 133, to restrict the free rotation of the push block 13.

[0026] When installing the support column 11, a cylindrical mounting hole is dug in the ground. The portion of the rotating shaft 12 protruding from the lower end of the support column 11 is inserted into the mounting hole. After the bottom surface of the flange 111 contacts the ground, the flange 111 is fixed to the ground with expansion bolts, allowing the support column 11 to stand upright. When the support column 11 sways due to factors such as earthquakes or wind, the rotating shaft 12 distributes and reduces the lateral load on the expansion bolts. At the same time, the squeezing action of the rock and soil on the rotating shaft 12 reduces the amplitude of the swaying of the support column 11, thus making the support column 11 stand more stably on the ground.

[0027] The drive unit drives the push block 13 to slide downward on the support column 11, thereby pushing the first connecting rod 15 and the second connecting rod 16 to rotate in opposite directions, reducing the included angle between the first connecting rod 15 and the second connecting rod 16, so that the two ends of the first connecting rod 15 and the second connecting rod 16 that are hinged are away from the rotating shaft 12, and then abut against the inner side wall of the mounting hole, thereby increasing the external dimensions of the rotating shaft 12, thus supporting the rotating shaft 12, restricting the free swing of the rotating shaft 12 in the mounting hole, and improving the stability of the ground displacement monitoring instrument 4 installed on the support column 11.

[0028] In this embodiment: a support plate 17 is provided outside the rotating shaft 12, and the two ends of the first connecting rod 15 and the second connecting rod 16 facing each other are hinged to the surface of the support plate 17 facing the rotating shaft 12, and are parallel to the two rotation center lines on the support plate 17.

[0029] In this embodiment: multiple support plates 17 are provided, and the multiple support plates 17 are arranged in a circular array with the rotating shaft 12 as the center; Both the first link 15 and the second link 16 are provided in multiple ways, and each is provided in a one-to-one correspondence with multiple support plates 17.

[0030] By setting the support plate 17, the contact area between the first connecting rod 15 and the second connecting rod 16 and the inner wall of the mounting hole is increased, thereby reducing the pressure at the contact point between the first connecting rod 15 and the second connecting rod 16 and the inner wall of the mounting hole. This makes the structure of the mounting hole more stable, thus providing continuous and stable support for the rotating shaft 12 and improving the stability of the rotating shaft 12. The rotation center lines of the first connecting rod 15 and the second connecting rod 16 coincide on the support plate 17, allowing the tilt angle of the support plate 17 to be freely changed. As a result, when the mounting hole deforms, the support plate 17 automatically adjusts its tilt angle along with the deformation of the inner wall of the mounting hole, ensuring that the support plate 17 continuously abuts against the inner wall of the mounting hole and continuously supports the rotating shaft 12. The support plate 17 is an arc-shaped plate. Multiple support plates 17 are spliced ​​together to form a circular tube. The pusher 13 pushes the multiple support plates 17 away from the rotating shaft 12 to expand the diameter of the tubular structure formed by splicing multiple support plates 17, thereby making better contact with the inner wall of the mounting hole. It also gathers the squeezing force of the rock and soil applied to the support plate 17 from all directions into the direction pointing towards the rotating shaft 12, further improving the stability of the rotating shaft 12.

[0031] In this embodiment: a slide bar 21 and two limiting rods 22 are provided between any two adjacent support plates 17, and the slide bar 21 is slidably connected to the support column 11 along the length direction of the support column 11; The two limiting rods 22 are hinged at their opposite ends and hinged at their opposite ends to the slide bar 21 and the connector 14, respectively. The rotation trajectory plane of the two limiting rods 22 is parallel to the sliding direction of the slide bar 21. A linkage component is provided between the push block 13 and the slide bar 21. When the push block 13 slides on the support column 11, the linkage component drives the slide bar 21 to slide on the support column 11.

[0032] The upper end of the slider 21 is inserted into the sliding hole 112 and slides in cooperation with the sliding hole 112.

[0033] During use, when the push block 13 slides downward on the support column 11, the multiple support plates 17 are dispersed and expanded, increasing the overall size of the multiple support plates 17 and creating a gap between two adjacent support plates 17. As a result, the two limiting rods 22 are exposed. Under the action of the linkage component, the slide bar 21 slides downward synchronously in the slide hole 112, thereby pushing the two limiting rods 22 to rotate in opposite directions, reducing the included angle between the two limiting rods 22, and causing the two ends of the hinged two limiting rods 22 to move away from the rotating shaft 12. As a result, they protrude from the gap between the two adjacent support plates 17 and abut against the inner wall of the mounting hole, thus providing support for the rotating shaft 12.

[0034] In this embodiment: the linkage component includes a protrusion 131 and a rack 211. One end of the protrusion 131 is connected to the side of the push block 13 facing the slide bar 21, and the other end is inserted into the tooth groove of the rack 211. The rack 211 is fixedly connected to the side of the slide bar 21 facing the protrusion.

[0035] In this embodiment: the protrusion 131 and the push block 13 are slidably connected along the radial direction of the rotating shaft 12. The end of the protrusion 131 facing the rack 211 is wedge-shaped and the inclined surface is located on the side facing the support column 11. A second spring 132 is provided between the protrusion 131 and the push block 13. One end of the second spring 132 is fixedly connected to the protrusion 131 and the other end is fixedly connected to the push block 13. When the second spring 132 is naturally extended, the protrusion 131 is inserted into the tooth groove of the rack 211.

[0036] The push block 13 has a storage groove on its side facing the rack 211. The protrusion 131 is slidably fitted into the storage groove, and the second spring 132 is embedded in the storage groove. The teeth on the rack 211 are wedge-shaped, and the inclined surface of the teeth on the rack 211 is parallel to the inclined surface of the protrusion 131.

[0037] like Figure 8 As shown, the end of the protrusion 131 facing away from the push block 13 is inserted into the tooth groove of the rack 21. During use, when the second spring 132 naturally extends, it pushes the protrusion 131 out of the receiving groove, and then the end of the protrusion 131 facing away from the push block 13 is inserted into the tooth groove of the rack 211, with the protrusion 131 abutting against the rack 211. When the push block 13 slides downward on the support column 11, the lower surface of the protrusion 131 abuts against the upper surface of one of the teeth on the rack 211, thereby pushing the rack 211 and the slide bar 21 to slide downward on the support column 11, so that the two limiting rods 22 fold and protrude outward toward the rotating shaft 12 until the two ends of the two limiting rods 22 are hinged and abut against the inner wall of the mounting hole, thus supporting the rotating shaft 12.

[0038] When the push block 13 slides upward on the support column 11, the inclined surface on the protrusion 131 abuts against the inclined surface of the tooth on the rack 211, causing the protrusion 131 to be squeezed and pushed into the receiving groove. Then the protrusion 131 smoothly slides over the tooth on the rack 211, so that the rack 211 and the slide bar 21 do not slide upward with the protrusion 131. As a result, the included angle between the two limiting rods 22 remains unchanged, providing stable support for the rotating shaft 12.

[0039] That is, when the push block 13 slides downward on the support column 11, the included angle between the two limiting rods 22 decreases, and then extends outward to abut against the rock and soil to support the rotating shaft 12. When the push block 13 slides upward on the support column 11, the included angle between the two limiting rods 22 remains unchanged, stably supporting the rotating shaft 12. When the push block 13 slides downward on the support column 11 again, the included angle between the two limiting rods 22 decreases again, and then the two limiting rods 22 continue to extend into the rock and soil until they insert into the rock and soil, improving the grip of the support column 11 and also improving the torsional resistance of the support column 11, further improving the stability of the installation of the support column 11.

[0040] In this embodiment: the rotating shaft 12 is rotatably connected to the support column 11, and the rotating shaft 12 has an external thread in the middle and is connected to the push block 13 through a threaded engagement; The connector 14 is sleeved on the outside of the rotating shaft 12 and rotates in conjunction with the rotating shaft 12.

[0041] In this embodiment: the driving part includes a first spring 31 sleeved on the outside of the rotating shaft 12. One end of the first spring 31 is fixedly connected to the support column 11 and the other end is fixedly connected to the push block 13. When the first spring 31 is in its naturally extended state, the push block 13 abuts against the connector 14.

[0042] The length of the rack 211 is smaller than that of the slider 21, and the lower end of the rack 211 is aligned with the lower end of the slider 21. When the protrusion 131 moves to the upper end of the slider 21 after completely sliding over the rack 211, the protrusion 131 can slide freely up or down without obstruction and disengage from the rack 211.

[0043] When the rotating shaft 12 is inserted into the mounting hole, it is rotated in the reverse direction. The external thread on the rotating shaft 12 pushes the push block 13 closer to the support column 11, and the first spring 31 is compressed and contracted. At the same time, multiple support plates 17 converge towards the rotating shaft 12 to reduce the overall diameter of the multiple support plates 17, so as to facilitate the insertion of the rotating shaft 12 into the mounting hole. After the rotating shaft 12 is inserted into the mounting hole, the torque applied to the rotating shaft 12 is released. The first spring 31 naturally extends and pushes the push block 13 away from the support column 11. Then, the support plates 17 move away from the rotating shaft 12 and abut against the inner wall of the mounting hole to support the rotating shaft 12. At the same time, the two limiting rods 22 extend outward from the rotating shaft 12, so that the two ends of the two limiting rods 22 that are hinged abut against the inner wall of the mounting hole, further supporting the rotating shaft 12.

[0044] Under the influence of factors such as earthquakes, the rocks and soil below the ground squeeze and collide with each other, which in turn squeezes and collides with the support plate 17, pushing the support plate 17 closer to the rotating shaft 12, so that the push block 13 approaches the support column 11. The first spring 31 is squeezed and contracted, and the protrusion 131 on the push block 13 slides over the rack 211. When the squeezing force of the rocks and soil on the support plate 17 decreases or disappears, the first spring 31 releases energy to push the push block 13 away from the support column 11. The support plate 17 moves away from the rotating shaft 12 again and abuts against the surrounding rocks and soil, restoring its supporting function for the rotating shaft 12. During the relative squeezing and collision process between the support plate 17 and the soil, the diameter of the mounting hole is continuously enlarged. Under the action of the first spring 31, the support plate 17 always abuts against the inner wall of the mounting hole, making the installation of the support column 11 more stable. At the same time, the protrusion 131 on the push block 13 abuts against the rack 211, pushing the rack 211 and the slide bar 21 to slide downward on the support column 11, so that the included angle between the two limiting rods 22 gradually decreases, and then the two ends of the two limiting rods 22 are hinged and inserted into the rock and soil, improving the gripping ability of the support column 11 and further limiting the swaying and tipping of the support column 11.

[0045] As a result, under the influence of factors such as earthquakes, the support plate 17 repeatedly closes or expands, continuously reducing the angle between the two limiting rods 22, thus increasing the length of the two limiting rods 22 inserted into the rock and soil, further improving the gripping ability of the support column 11. When the angle between the two limiting rods 22 is reduced to its minimum, the protrusion 131 slides to the upper end of the slide bar 21 and completely slides past the rack 211. Then, the protrusion 131 moves within the stroke of the upper end of the slide bar 21 without the rack 211, so that the downward or upward movement of the protrusion 131 relative to the slide bar 21 is not hindered by the rack 211, keeping the two limiting rods 22 fully inserted into the rock and soil. At the same time, after the two limiting rods 22 are fully inserted into the rock and soil, the support plate 17 can still approach or move away from the rotating shaft 12. Under the action of the first spring 31, it plays a buffering and shock-absorbing role against the impact force of the rock and soil on the support column 11, thereby protecting the internal components of the ground displacement monitoring instrument 4.

[0046] In this embodiment: the support column 11 is a hollow structure with openings at both the top and bottom ends; the upper end of the rotating shaft 12 is inserted into the support column 11 and extends out from the upper opening of the support column 11; and the rotating shaft 12 is rotatably engaged with the support column 11. The drive unit also includes a wind turbine 32, the axle of which is fixedly connected to the upper end of the rotating shaft 12.

[0047] By fixing the wind turbine 32 to the upper end of the rotating shaft 12, and with the rotation trajectory plane of the wind turbine 32 parallel to the horizontal plane, when the wind blows onto the support column 11, the wind force drives the wind turbine 32 and the rotating shaft 12 to rotate in the forward direction. This causes the push block 13 to push the support plate 17 away from the rotating shaft 12, allowing the support plate 17 to further press against the inner wall of the mounting hole. As a result, the reaction force of the inner wall of the mounting hole strengthens the support force on the rotating shaft 12, reducing the probability of the support column 11 swaying under the action of the wind, thereby protecting the internal components of the ground displacement monitor 4 from being damaged by shaking.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An installation protection device for a ground displacement monitoring instrument, comprising a support column (11), characterized in that: The lower end of the support column (11) is provided with a rotating shaft (12) parallel to the support column (11) and a push block (13) connected in series on the rotating shaft (12). The upper end of the rotating shaft (12) is connected to the support column (11), and the lower end of the rotating shaft (12) is connected to a connector (14). The push block (13) and the support column (11) are slidably connected along the length of the support column (11) with a single degree of freedom. A first connecting rod (15) and a second connecting rod (16) are provided between the push block (13) and the connector (14). The two ends of the first connecting rod (15) and the second connecting rod (16) facing each other are hinged together, and the two ends facing away from each other are hinged together with the push block (13) and the connector (14) respectively. The rotation trajectory plane of the first connecting rod (15) and the rotation trajectory plane of the second connecting rod (16) are both parallel to the sliding direction of the push block (13). A drive unit is connected to the push block (13), which is used to drive the push block (13) to slide on the support column (11); The rotating shaft (12) is provided with a support plate (17). The two ends of the first connecting rod (15) and the second connecting rod (16) facing each other are hinged to the surface of the support plate (17) facing the rotating shaft (12) and are parallel to the two rotation center lines on the support plate (17). The support plate (17) is provided in multiple ways, and the first connecting rod (15) and the second connecting rod (16) are provided in multiple ways, and each of them is provided in a one-to-one correspondence with the multiple support plates (17); A slide bar (21) and two limiting rods (22) are provided between any two adjacent support plates (17), and the slide bar (21) is slidably connected to the support column (11) along the length direction of the support column (11); The two limiting rods (22) are hinged at their opposite ends and hinged at their opposite ends to the slide bar (21) and the connector (14) respectively. The rotation trajectory plane of the two limiting rods (22) is parallel to the sliding direction of the slide bar (21). A linkage component is provided between the push block (13) and the slide bar (21). When the push block (13) slides on the support column (11), the linkage component drives the slide bar (21) to slide on the support column (11). The linkage component includes a protrusion (131) and a rack (211). One end of the protrusion (131) is connected to the side of the push block (13) facing the slide bar (21), and the other end is inserted into the tooth groove of the rack (211). The rack (211) and the slide bar (21) are fixedly connected to one side of the protrusion (131); The protrusion (131) and the push block (13) are slidably connected along the radial direction of the rotating shaft (12). The end of the protrusion (131) facing the rack (211) is wedge-shaped and the inclined surface is located on the side facing the support column (11). A second spring (132) is provided between the protrusion (131) and the push block (13). One end of the second spring (132) is fixedly connected to the protrusion (131) and the other end is fixedly connected to the push block (13). When the second spring (132) is naturally extended, the protrusion (131) is inserted into the tooth groove of the rack (211). The teeth on the rack (211) are wedge-shaped, and the inclined surfaces of the teeth on the rack (211) are parallel to the inclined surfaces of the protrusions (131).

2. The installation protection device for the ground displacement monitoring instrument according to claim 1, characterized in that: Multiple support plates (17) are arranged in a ring array with the pivot (12) as the center.

3. The installation protection device for the ground displacement monitoring instrument according to claim 2, characterized in that: The rotating shaft (12) is rotatably connected to the support column (11), and the rotating shaft (12) has an external thread in the middle and is connected to the push block (13) through a threaded engagement. The connector (14) is sleeved on the outside of the rotating shaft (12) and rotates in conjunction with the rotating shaft (12).

4. The installation protection device for the ground displacement monitoring instrument according to claim 3, characterized in that: The drive unit includes a first spring (31) sleeved outside the rotating shaft (12). One end of the first spring (31) is fixedly connected to the support column (11), and the other end is fixedly connected to the push block (13). When the first spring (31) is in its naturally extended state, the push block (13) abuts against the connector (14).

5. The installation protection device for the ground displacement monitoring instrument according to claim 4, characterized in that: The support column (11) is a hollow structure with openings at both the top and bottom. The upper end of the rotating shaft (12) is inserted into the support column (11) and extends out from the upper opening of the support column (11). The rotating shaft (12) and the support column (11) are rotatably engaged. The drive unit also includes a wind turbine (32), the axle of which is fixedly connected to the upper end of the shaft (12).

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