Mounting structure for displacement monitoring of fractured roof and mounting method of mounting structure

Abstract

The invention relates to the technical field related to fracturing, in particular to an installation structure for fracturing roof displacement monitoring and an installation method thereof.The installation structure for fracturing roof displacement monitoring comprises a fixing plate and further comprises an assembly table movably arranged on the fixing plate and connected with a thread driving mechanism installed on the fixing plate, and the thread driving mechanism is connected with the assembly table; the thread driving mechanism can drive the assembly table to perform lifting action; the vertical plate is arranged at the bottom of the assembly table and connected with the assembly table through multiple sets of elastic connecting mechanisms, the end, away from the assembly table, of the vertical plate is connected with a ring body through a yoke plate, and a displacement sensor used for detecting the top plate is arranged on the yoke plate; during installation, only the displacement sensor needs to be arranged on the yoke plate, the assembly table drives the ring body to go deep into the drill hole, and the energy storage mechanism drives the circumferential expanding and supporting mechanism to execute the expanding action, so that the circular ring is supported and stabilized in the drill hole, installation of the displacement sensor is completed, intervention of workers is not needed, manpower is saved, and the device is suitable for popularization and application.

Description

Technical Field

[0001] The present invention relates to the technical field related to fracturing, and in particular to an installation structure for monitoring displacement of a fracturing top plate and an installation method thereof. Background Art

[0002] Well fracturing is a technology that helps improve the efficiency of mine gas control and ensure safe and efficient production in mines. Among them, the sudden break of the roof is an important factor inducing rock burst in mines. In order to improve the safety of mines and prevent roof disasters, it is necessary to monitor the roof displacement in real time, grasp the movement state of the roof in time, predict possible roof disasters such as roof collapse, and take preventive measures to ensure the safety of miners.

[0003] In actual construction, displacement monitoring can be carried out through a displacement sensor combined with an amplifier, so the sensor needs to be placed in the borehole. If manual installation is used, not only is the workload large, but the installation work is also inconvenient due to the structure of the borehole. Summary of the invention

[0004] The object of the present invention is to provide an installation structure and an installation method for monitoring the displacement of a fracturing top plate, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A mounting structure for monitoring displacement of a fracturing top plate, comprising a fixing plate, and further comprising: An assembly platform, movably disposed on the fixed plate and connected to a threaded drive mechanism installed on the fixed plate, wherein the threaded drive mechanism can drive the assembly platform to perform a lifting action; A vertical plate is arranged at the bottom of the assembly platform and connected to the assembly platform through multiple sets of elastic connection mechanisms. One end of the vertical plate away from the assembly platform is connected to a ring body through a connecting plate. A displacement sensor for detecting the top plate is arranged on the connecting plate. The circumferential expansion and support mechanism is arranged on the connecting plate and connected to the energy storage mechanism installed on the vertical plate. The energy storage mechanism cooperates with two sets of limiting mechanisms arranged on the assembly platform. When the threaded driving mechanism drives the connecting plate to push the displacement sensor into the drill hole and the displacement sensor reaches the end of the stroke, the limiting mechanism can be disengaged from the energy storage mechanism, prompting the energy storage mechanism to release elastic potential energy so that the circumferential expansion and support mechanism performs an expansion action. After the assembly platform rises, the elastic connection mechanism prompts the vertical plate to be disengaged from the assembly platform.

[0006] As a further solution of the present invention: the circumferential expansion mechanism includes multiple groups of sliding components arranged on the connecting plate, the multiple groups of sliding components are equidistantly distributed along the circumference of the ring body, and can move radially along the ring body, each group of sliding components is connected to a kit slidably arranged on the vertical plate, and the kit is connected to the energy storage mechanism.

[0007] As a further solution of the present invention: the sliding assembly includes a movable seat slidably arranged on the connecting plate and an arc-shaped abutment member connected to the movable seat through a connecting arm, the movable seat is connected to the kit through a support rod, and the two ends of the support rod are respectively hinged to the kit and the movable seat, and a limit column is also fixedly provided at one end of the vertical plate away from the connecting plate, and the limit column abuts against the assembly table.

[0008] As a further solution of the present invention: a cylindrical cavity is provided in the vertical plate, and the energy storage mechanism includes a column fixed in the cylindrical cavity, a frustum slidably arranged on the column, and a second cylindrical spring sleeved on the outer circumference of the column, one end of the second cylindrical spring is connected to the frustum, and the other end is connected to the inner wall of the cylindrical chamber.

[0009] As a further solution of the present invention: the truncated table is connected to the kit via a plurality of connecting columns, and the vertical plate is provided with a plurality of strip-shaped through grooves adapted to the connecting columns, the strip-shaped through grooves being connected to the columnar chamber for the movement of the connecting columns.

[0010] As a further solution of the present invention: the limiting mechanism includes a slider slidably arranged on the assembly table and a limiting arm connected to the slider, a support arm is installed on the kit, and the support arm abuts against the limiting arm, wherein a sliding fitting component is also provided between the slider and the fixed plate.

[0011] As a further solution of the present invention: the sliding fitting assembly comprises a driven shaft pin mounted on the sliding block via a vertical shaft and two limit plates fixed on the fixed plate and respectively located on both sides of the vertical shaft, wherein the limit plates are provided with a groove body adapted to the driven shaft pin; Wherein, the driven shaft pin passes through the groove body and is slidably connected with the limiting plate. The groove body includes a first slide groove and a second slide groove connected to each other. The first slide groove is vertically arranged, and the second slide groove is inclined.

[0012] As a further solution of the present invention: the elastic connection mechanism includes a protruding plate fixed on the assembly table, two guide rods slidably arranged on the protruding plate, and a second triangular block fixed to the two guide rods toward one end of the vertical plate, the outer periphery of the two guide rods is also sleeved with a first cylindrical spring, the two ends of the first cylindrical spring are respectively connected to the protruding plate and the second triangular block, the vertical plate is fixed with a first triangular block, and the inclined surfaces of the first triangular block and the second triangular block are abutted.

[0013] As a further solution of the present invention: the threaded drive mechanism includes a screw rod rotatably mounted on the fixed plate and a threaded sleeve sleeved on the screw rod and threadedly connected to the screw rod, one end of the threaded sleeve away from the fixed plate is fixed to the assembly table, and a drive motor is also installed on the fixed plate, and the screw rod is connected to the output end of the drive motor.

[0014] A method for installing a fracturing top plate displacement monitoring system, using the above-mentioned installation structure, comprises the following steps: Step 1: Install the displacement sensor on the connecting plate; Step 2: The thread drive mechanism works in the forward direction, driving the assembly table to drive the ring body to move into the drill hole; Step 3: The limit mechanism is triggered and separated from the energy storage mechanism, and the energy storage mechanism releases elastic potential energy, prompting the circumferential expansion mechanism to perform an expansion action, and the ring body is stabilized in the drill hole; Step 4: The threaded drive mechanism works in the reverse direction, and the elastic connection mechanism causes the vertical plate to separate from the assembly platform, driving the assembly platform to rise and reset.

[0015] Compared with the prior art, the present invention has the following beneficial effects: During installation, the displacement sensor only needs to be set on the connecting plate, and the threaded driving mechanism drives the assembly platform to drive the ring body to go deeper into the borehole. When the assembly platform forms the end during movement, the limit mechanism is triggered, which can prompt the energy storage mechanism to release the elastic potential energy, so that the energy storage mechanism drives the circumferential expansion mechanism to perform the expansion action, so that the ring is supported and stably in the borehole, and the installation of the displacement sensor is completed without the intervention of the staff, thereby saving manpower and being suitable for popularization and use. Secondly, multiple sets of elastic connection mechanisms are arranged between the vertical plate and the assembly platform, so that the expansion movement of multiple arc-shaped abutments can be in front, and the separation movement of the assembly platform and the vertical plate can be in the back, ensuring that the arc-shaped abutments can be stably supported on the inner wall of the drilled hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a structural schematic diagram of an embodiment of an installation structure for monitoring the displacement of a fracturing roof.

[0017] Figure 2The schematic diagram is a structural diagram from another angle of an embodiment of an installation structure for monitoring displacement of a fracturing top plate.

[0018] Figure 3 The present invention is a structural schematic diagram of another angle of an embodiment of an installation structure for monitoring the displacement of a fracturing roof.

[0019] Figure 4 The structure explosion diagram of the threaded drive mechanism in one embodiment of an installation structure for monitoring the displacement of a fracturing roof is shown.

[0020] Figure 5 The present invention is a schematic structural diagram of a sliding fitting assembly in one embodiment of an installation structure for monitoring displacement of a fracturing top plate.

[0021] Figure 6 The present invention is a schematic diagram of the connection relationship between the circumferential expansion support mechanism and the energy storage mechanism in one embodiment of an installation structure for monitoring the displacement of a fracturing roof.

[0022] Figure 7 The structure of the circumferential expansion mechanism in one embodiment of the installation structure for monitoring the displacement of the fracturing roof is exploded.

[0023] Figure 8 for Figure 7 Schematic diagram of the structure from another angle.

[0024] Fig. 9 for Figure 3 A magnified view of the structure at center.

[0025] Fig.10 for Figure 8 Exploded view of the structure at point B.

[0026] In the figure: 1, fixed plate; 2, driving motor; 3, screw rod; 4, threaded sleeve; 5, assembly table; 6, ring body; 7, connecting plate; 8, vertical plate; 801, strip through groove; 802, limiting column; 9, first triangular block; 10, second triangular block; 11, protruding plate; 12, guide rod; 13, first cylindrical spring; 14, supporting rod; 15, movable seat; 16, connecting arm; 17, arc-shaped abutment; 18, kit; 19, supporting arm; 20, limiting arm; 21, vertical column; 22, second cylindrical spring; 23, round table; 2301, connecting column; 24, sliding block; 25, vertical shaft; 26, driven shaft pin; 27, limiting plate; 2701, first slide groove; 2702, second slide groove; 28, displacement sensor. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0029] See also Figure 1-Figure 10 In an embodiment of the present invention, a mounting structure for monitoring displacement of a fracturing top plate includes a fixing plate 1 and further includes: An assembly platform 5 is movably disposed on the fixed plate 1 and connected to a threaded driving mechanism installed on the fixed plate 1, wherein the threaded driving mechanism can drive the assembly platform 5 to perform a lifting action; A vertical plate 8 is provided at the bottom of the assembly platform 5 and connected to the assembly platform 5 through multiple sets of elastic connection mechanisms. One end of the vertical plate 8 away from the assembly platform 5 is connected to the ring body 6 through a connecting plate 7. The connecting plate 7 is provided with a displacement sensor 28 for detecting the top plate. The circumferential expansion and support mechanism is arranged on the connecting plate 7 and connected to the energy storage mechanism installed on the vertical plate 8. The energy storage mechanism cooperates with two sets of limiting mechanisms arranged on the assembly platform 5. When the threaded driving mechanism drives the connecting plate 7 to push the displacement sensor 28 into the borehole and the displacement sensor 28 reaches the end of the stroke, the limiting mechanism can be disengaged from the energy storage mechanism, prompting the energy storage mechanism to release elastic potential energy so that the circumferential expansion and support mechanism performs an expansion action. After the assembly platform 5 rises, the elastic connection mechanism prompts the vertical plate 8 to be disengaged from the assembly platform 5.

[0030] Specifically, when in use, a suitable installation position is first selected, and then the threaded drive mechanism works in the forward direction, driving the assembly platform 5 to drive the vertical plate 8, the connecting plate 7 and the ring body 6 to move into the borehole through the elastic connection mechanism, so as to transport the displacement sensor 28 into the borehole; When the displacement sensor 28 reaches the end of the stroke, the limit mechanism will be separated from the energy storage mechanism, so that the energy storage mechanism releases elastic potential energy, driving the circumferential expansion mechanism to perform an expansion action, and the ring body 6 is supported and stabilized in the borehole, completing the installation of the displacement sensor 28; Then, the threaded drive mechanism works in the reverse direction to drive the assembly platform 5 to rise. During this process, the elastic connection mechanism disconnects the vertical plate 8 from the assembly platform 5 to facilitate the assembly platform 5 to rise and reset.

[0031] Please refer again Figure 6 The circumferential expansion mechanism includes a plurality of sliding components arranged on the connecting plate 7. The plurality of sliding components are evenly distributed along the circumference of the ring body 6 and can move radially along the ring body 6. Each group of sliding components is connected to a set 18 slidably arranged on the vertical plate 8, and the set 18 is connected to the energy storage mechanism. The sliding component includes a movable seat 15 slidably arranged on the connecting plate 7 and an arc-shaped abutment member 17 connected to the movable seat 15 through a connecting arm 16. The movable seat 15 is connected to the set 18 through a support rod 14, and the two ends of the support rod 14 are respectively hinged to the set 18 and the movable seat 15. A limiting column 802 is also fixedly provided at one end of the vertical plate 8 away from the connecting plate 7, and the limiting column 802 abuts against the assembly table 5.

[0032] Specifically, when the displacement sensor 28 descends to the end of the stroke, that is, the limiting mechanism is disengaged from the energy storage mechanism, the energy storage mechanism releases elastic potential energy, and accordingly, the energy storage mechanism drives the kit 18 to slide on the vertical plate 8 toward the connecting plate 7, and then, the kit 18 drives the movable seat 15 to slide radially along the ring body 6 on the connecting plate 7 through the support rod 14. Specifically, the movable seat 15 slides away from the vertical plate 8 on the connecting plate 7, so that the arc-shaped abutment member 17 is supported on the inner wall of the borehole, so that the ring body 6 is stably arranged in the borehole, that is, the displacement sensor 28 is smoothly installed in the borehole.

[0033] Please refer again Figure 7 , Figure 8 as well as Fig.10A cylindrical cavity is provided in the vertical plate 8, and the energy storage mechanism includes a column 21 fixed in the cylindrical cavity, a round table 23 slidably provided on the column 21, and a second cylindrical spring 22 sleeved on the outer circumference of the column 21, one end of the second cylindrical spring 22 is connected to the round table 23, and the other end is connected to the inner wall of the cylindrical chamber; the round table 23 is connected to the kit 18 through a plurality of connecting columns 2301, and a plurality of strip through grooves 801 adapted to the connecting columns 2301 are provided on the vertical plate 8, and the strip through grooves 801 are connected to the cylindrical chamber for the movement of the connecting columns 2301.

[0034] Specifically, in the latter part of the stroke in which the threaded drive mechanism drives the assembly table 5 to drive the ring body 6 to move into the borehole, the limiting mechanism is triggered and disengaged from the kit 18, so that the constrained state of the kit 18 is released, and then the second cylindrical spring 22 can rebound, that is, the second cylindrical spring 22 drives the round table 23 to slide on the column 21 toward the connecting plate 7, and the round table 23 drives the kit 18 to slide on the vertical plate 8 toward the connecting plate 7 through a plurality of the connecting columns 2301, and the connecting columns 2301 slide along the strip-shaped through grooves 801, and accordingly, the kit 18 drives the movable seat 15 to slide radially along the ring body 6 on the connecting plate 7 through the support rod 14, so that the arc-shaped abutment member 17 is supported on the inner wall of the borehole, thereby realizing the smooth installation of the displacement sensor 28 in the borehole.

[0035] Please refer again Figure 5 The limiting mechanism includes a slider 24 slidably mounted on the assembly platform 5 and a limiting arm 20 connected to the slider 24. A support arm 19 is mounted on the kit 18, and the support arm 19 abuts against the limiting arm 20. A sliding matching assembly is also provided between the slider 24 and the fixed plate 1. The sliding matching assembly includes a driven shaft pin 26 mounted on the slider 24 through a vertical shaft 25 and two limiting plates 27 fixedly mounted on the fixed plate 1 and located on both sides of the vertical shaft 25, respectively. A groove body adapted to the driven shaft pin 26 is provided on the limiting plate 27; the driven shaft pin 26 penetrates the groove body and is slidably connected to the limiting plate 27, and the groove body includes a first slide groove 2701 and a second slide groove 2702 connected to each other, wherein the first slide groove 2701 is vertically arranged, and the second slide groove 2702 is inclined.

[0036] In detail, when the threaded drive mechanism drives the assembly platform 5 to move toward the borehole, the assembly platform 5 drives the slider 24, the vertical shaft 25 and the driven shaft pin 26 to move together. Specifically, the driven shaft pin 26 slides along the first slide groove 2701 and the second slide groove 2702 in sequence. When the driven shaft pin 26 slides along the first slide groove 2701, the slider 24 and the assembly platform 5 remain relatively stationary, and the driven shaft pin 26 slides along the second slide groove. When 2702 slides, the driven shaft pin 26 will slide and cooperate with the limiting plate 27 through the second slide groove 2702, so that the driven shaft pin 26 drives the slider 24 to make way through the vertical shaft 25, and the slider 24 drives the limiting arm 20 to move away from the kit 18 until the limiting arm 20 is offset from the support arm 19. Therefore, the kit 18 is released from the limit, and the second columnar spring 22 rebounds, so that the multiple arc-shaped abutment members 17 are supported on the inner wall of the borehole.

[0037] Please refer again Fig. 9 The elastic connection mechanism includes a protruding plate 11 fixed on the assembly table 5, two guide rods 12 slidably arranged on the protruding plate 11, and a second triangular block 10 fixed to the two guide rods 12 at one end of the vertical plate 8. The outer periphery of the two guide rods 12 is also sleeved with a first cylindrical spring 13, and the two ends of the first cylindrical spring 13 are respectively connected to the protruding plate 11 and the second triangular block 10. A first triangular block 9 is fixed on the vertical plate 8, and the inclined surfaces of the first triangular block 9 and the second triangular block 10 are abutted.

[0038] After the plurality of arc-shaped abutments 17 are supported on the inner wall of the borehole, the threaded drive mechanism works in the reverse direction to drive the assembly platform 5 to rise and reset. In the previous stroke of reset, the inclined surfaces of the first triangular block 9 and the second triangular block 10 will slide, that is, the second triangular block 10 will give way and move toward the protruding plate 11, and the first columnar spring 13 will be compressed until the second triangular block 10 is disengaged from the first triangular block 9, and the assembly platform 5 is smoothly disengaged from the vertical plate 8. Therefore, the setting of the elastic connection mechanism can make the expansion movement of the plurality of arc-shaped abutments 17 come first, and the disengagement movement of the assembly platform 5 and the vertical plate 8 come later, thereby ensuring that the arc-shaped abutments 17 can be stably supported on the inner wall of the borehole.

[0039] Please refer again Figure 4The threaded drive mechanism includes a screw rod 3 rotatably mounted on the fixed plate 1 and a threaded sleeve 4 sleeved on the screw rod 3 and threadedly connected to the screw rod 3. One end of the threaded sleeve 4 away from the fixed plate 1 is fixed to the assembly table 5, and a drive motor 2 is also installed on the fixed plate 1. The screw rod 3 is connected to the output end of the drive motor 2.

[0040] During operation, the driven shaft pin 26 and the limit plate 27 can act as a guide. When the driving motor 2 drives the screw rod 3 to rotate forward or reverse, the threaded sleeve 4 can be threadedly matched with the screw rod 3, and then the threaded sleeve 4 can drive the assembly platform 5 to descend or ascend. The threaded matching between the threaded sleeve 4 and the screw rod 3 is used to realize the lifting and lowering function of the assembly platform 5, and the driving accuracy is high and the stability is good.

[0041] As another embodiment of the present invention, a method for installing a fracturing top plate displacement monitoring system is also proposed, using the installation structure, and comprising the following steps: Step 1: Install the displacement sensor 28 on the connecting plate 7; Step 2: The thread drive mechanism works in the forward direction, driving the assembly platform 5 to drive the ring body 6 to move into the borehole; Step 3: The limiting mechanism is triggered and disengaged from the energy storage mechanism, and the energy storage mechanism releases elastic potential energy, prompting the circumferential expansion mechanism to perform an expansion action, and the ring body 6 is stabilized in the borehole; Step 4: The threaded drive mechanism works in the reverse direction, and the elastic connection mechanism causes the vertical plate 8 to be separated from the assembly platform 5, driving the assembly platform 5 to rise and reset.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mounting structure for monitoring displacement of a fracturing top plate, comprising a fixing plate (1); It is characterized in that Also includes: An assembly platform (5) is movably mounted on the fixing plate (1) and is connected to a threaded drive mechanism mounted on the fixing plate (1), wherein the threaded drive mechanism is capable of driving the assembly platform (5) to perform a lifting action; A vertical plate (8) is disposed at the bottom of the assembly platform (5) and connected to the assembly platform (5) via a plurality of sets of elastic connection mechanisms; one end of the vertical plate (8) away from the assembly platform (5) is connected to a ring body (6) via a connecting plate (7); a displacement sensor (28) for detecting the top plate is provided on the connecting plate (7); The circumferential expansion and support mechanism is arranged on the connecting plate (7) and connected to the energy storage mechanism installed on the vertical plate (8). The energy storage mechanism cooperates with two sets of limiting mechanisms arranged on the assembly platform (5). When the threaded drive mechanism drives the connecting plate (7) to push the displacement sensor (28) into the borehole, and the displacement sensor (28) reaches the end of the stroke, the limiting mechanism can be separated from the energy storage mechanism, prompting the energy storage mechanism to release elastic potential energy, so that the circumferential expansion and support mechanism performs an expansion action. After the assembly platform (5) rises, the elastic connection mechanism prompts the vertical plate (8) to be separated from the assembly platform (5).

2. The installation structure for monitoring displacement of a fracturing top plate according to claim 1, characterized in that: The circumferential expansion mechanism comprises a plurality of sliding components arranged on the connecting plate (7), the plurality of sliding components being equidistantly distributed along the circumference of the ring body (6) and being able to move radially along the ring body (6), each group of sliding components being connected to a set (18) slidably arranged on the vertical plate (8), and the set (18) being connected to the energy storage mechanism.

3. The installation structure for monitoring displacement of a fracturing top plate according to claim 2, characterized in that: The sliding assembly comprises a movable seat (15) slidably arranged on the connecting plate (7) and an arc-shaped abutment member (17) connected to the movable seat (15) via a connecting arm (16); the movable seat (15) is connected to the set (18) via a support rod (14), and the two ends of the support rod (14) are respectively hinged to the set (18) and the movable seat (15); a limiting column (802) is fixedly provided at one end of the vertical plate (8) away from the connecting plate (7), and the limiting column (802) abuts against the assembly table (5).

4. The installation structure for monitoring displacement of a fracturing top plate according to claim 3, characterized in that: A cylindrical cavity is provided in the vertical plate (8), and the energy storage mechanism comprises a vertical column (21) fixed in the cylindrical cavity, a round table (23) slidably arranged on the vertical column (21), and a second cylindrical spring (22) sleeved on the outer circumference of the vertical column (21), one end of the second cylindrical spring (22) is connected to the round table (23), and the other end is connected to the inner wall of the cylindrical cavity.

5. The installation structure for monitoring displacement of a fracturing top plate according to claim 4, characterized in that: The truncated table (23) is connected to the kit (18) via a plurality of connecting columns (2301), and the vertical plate (8) is provided with a plurality of strip-shaped through grooves (801) adapted to the connecting columns (2301), wherein the strip-shaped through grooves (801) are connected to the columnar chamber and are used for the connecting columns (2301) to move.

6. The installation structure for monitoring displacement of a fracturing roof according to claim 2, characterized in that: The limiting mechanism comprises a slider (24) slidably mounted on the assembly platform (5) and a limiting arm (20) connected to the slider (24); a support arm (19) is mounted on the kit (18); the support arm (19) is in contact with the limiting arm (20); and a sliding fitting component is further provided between the slider (24) and the fixing plate (1).

7. The installation structure for monitoring displacement of a fracturing roof according to claim 6, characterized in that: The sliding fit assembly comprises a driven shaft pin (26) mounted on the slide block (24) via a vertical shaft (25), and two limit plates (27) fixed on the fixed plate (1) and located on both sides of the vertical shaft (25), wherein the limit plates (27) are provided with a groove body adapted to the driven shaft pin (26); The driven shaft pin (26) passes through the groove body and is slidably connected to the limiting plate (27); the groove body comprises a first slide groove (2701) and a second slide groove (2702) connected to each other; the first slide groove (2701) is vertically arranged, and the second slide groove (2702) is inclined.

8. The installation structure for monitoring displacement of a fracturing top plate according to claim 1, characterized in that: The elastic connection mechanism comprises a protruding plate (11) fixed on the assembly platform (5), two guide rods (12) slidably arranged on the protruding plate (11), and a second triangular block (10) fixed to one end of the two guide rods (12) facing the vertical plate (8), the outer circumference of the two guide rods (12) is also sleeved with a first columnar spring (13), the two ends of the first columnar spring (13) are respectively connected to the protruding plate (11) and the second triangular block (10), the vertical plate (8) is fixedly provided with a first triangular block (9), and the inclined surfaces of the first triangular block (9) and the second triangular block (10) are in contact with each other.

9. The installation structure for monitoring displacement of a fracturing roof according to claim 8, characterized in that: The threaded drive mechanism comprises a screw rod (3) rotatably mounted on the fixing plate (1) and a threaded sleeve (4) sleeved on the screw rod (3) and threadedly connected to the screw rod (3); one end of the threaded sleeve (4) away from the fixing plate (1) is fixed to the assembly table (5); a drive motor (2) is also mounted on the fixing plate (1); and the screw rod (3) is connected to an output end of the drive motor (2).

10. A method for installing a fracturing top plate displacement monitoring system, using the installation structure as claimed in claim 1, characterized in that: The following steps are involved: Step 1, installing the displacement sensor (28) on the connecting plate (7); Step 2: The thread drive mechanism works in a forward direction, driving the assembly platform (5) to drive the ring body (6) to move toward the borehole; Step 3: the limit mechanism is triggered and disengaged from the energy storage mechanism, and the energy storage mechanism releases elastic potential energy, prompting the circumferential expansion mechanism to perform an expansion action, so that the ring body (6) is firmly fixed in the borehole; Step 4: the threaded drive mechanism works in the reverse direction, and the elastic connection mechanism causes the vertical plate (8) to separate from the assembly platform (5), thereby driving the assembly platform (5) to rise and reset.

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