Vertical strainmeter for seismic monitoring

Abstract

The application discloses vertical strain amount observation equipment for earthquake monitoring and relates to the technical field of earthquake monitoring.The vertical strain amount observation equipment comprises a support frame placed on the ground, fixing rods, a driving assembly, an auxiliary assembly, connecting pieces and a cleaning assembly, a measuring instrument is arranged in the support frame, the bottom of each fixing rod is connected with the measuring instrument, a plurality of fixing rods are arranged, the fixing rods are combined and fixed through the threaded columns and threaded grooves arranged at the two ends of the fixing rods, fixed support plates and movable support plates are arranged in the support frame, first pressing blocks are symmetrically arranged on the outer side of each fixed support plate, second pressing blocks are symmetrically arranged on the outer side of each movable support plate, first sliding blocks and second sliding blocks with external teeth are arranged on the outer side of each movable support plate, and adjusting gears are arranged on the top of each movable support plate.The measuring instrument is fixed through the fixing rods, the measuring instrument is driven into a pit through the fixing rods, the measuring instrument can be prevented from colliding with the inner wall of the pit during the process of being placed into the pit, and the measuring instrument is placed into the deeper part of the pit step by step through the mutual combination of the fixing rods.

Description

Technical Field

[0001] The present invention relates to the technical field of earthquake monitoring, and in particular to a vertical strain observation device for earthquake monitoring. Background Art

[0002] The acquisition of vertical strain will provide basic analytical data for earthquake prediction research and geodynamic research. Vertical observation requires drilling a vertical deep hole underground, placing the instrument into the deep hole, and monitoring the vertical crust in real time.

[0003] When placing a measuring instrument into a deep hole, it is generally lowered into the pit by a rope. However, the rope itself is made of soft material and will swing when subjected to a small external force. At this time, the suspended measuring instrument will collide with the inner wall of the pit and contact the soil on the inner wall of the pit, causing the soil to cover and enter the precision parts inside the measuring instrument, affecting the use accuracy of the precision parts. If the collision is too severe, the precision parts inside the measuring instrument will be damaged, resulting in greater malfunction problems, and thus affecting the measurement accuracy of the measuring instrument. For this reason, we propose a vertical strain observation device for earthquake monitoring. Summary of the Invention

[0004] The purpose of the present invention is to provide a vertical strain observation device for earthquake monitoring to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A vertical strain observation device for earthquake monitoring, comprising a support frame placed on the ground, a fixed rod, a driving assembly, an auxiliary assembly and a cleaning assembly, a measuring instrument being provided in the support frame, the bottom of the fixed rod being connected to the measuring instrument, a plurality of fixed rods being provided, and two adjacent fixed rods being combined and fixed by the cooperation of threaded columns and threaded grooves provided at both ends of the fixed rods, a fixed support plate being fixed in the support frame, a movable support plate being slidably provided in the support frame, a mounting groove being provided at the bottom of the movable support plate and cooperating with the top of the fixed rod, a through hole being provided in the middle of the fixed support plate, a first pressing block being symmetrically provided on the outer side of the fixed support plate, a second pressing block being symmetrically provided on the outer side of the movable support plate, a first slider and a second slider being provided on the outer side of the movable support plate, an adjusting gear being provided on the top of the movable support plate for driving the first slider and the second slider to move toward each other, external teeth being provided on the inner sides of the first slider and the second slider and cooperating with the adjusting gear, a driving assembly for driving the adjusting gear to rotate being provided on the outer side of the movable support plate, an auxiliary assembly being provided in the support frame and driving the movable support plate to move, and a cleaning assembly being provided on the outer side of the support frame and used to clean dust and dirt adhering to the outer side of the fixed rod taken out from the pit.

[0006] Preferably, the driving assembly includes a driving motor, a mounting bracket is fixedly provided on the top of the movable support plate, a rotating shaft is provided for rotation inside the mounting bracket, the driving motor is fixedly provided on the outside of the mounting bracket, the output end of the driving motor is fixed to one end of the rotating shaft, two first bevel gears are fixedly provided on the outside of the rotating shaft, two adjusting gears are provided, and the two adjusting gears are symmetrically provided on both sides of the mounting groove, a second bevel gear is fixedly provided on the outside of the gear shaft of the adjusting gear, and the second bevel gear is meshed and connected with the first bevel gear.

[0007] Preferably, both the movable support plate and the fixed support plate are provided with sliding holes, the first pressure block is slidably arranged in the sliding hole of the fixed support plate, a limit rod is fixedly provided on the top of the first pressure block, the top of the limit rod passes through the sliding hole of the movable support plate, the top of the limit rod is slidably connected to the top of the support frame, the sliding holes provided on the movable support plate are symmetrically distributed, the first slider and the second slider are respectively slidably arranged in two groups of symmetrically distributed sliding holes, the limit rod passes through the first slider and is slidably connected to the first slider, the second pressure block is provided at the bottom of the movable support plate, and the second pressure block is fixed to the second slider.

[0008] Preferably, the two first bevel gears are respectively arranged on the outside of the two second bevel gears.

[0009] Preferably, a rubber pad is fixedly provided on one end of the first pressing block and the second pressing block close to the installation groove.

[0010] Preferably, the auxiliary component includes an auxiliary motor, which is fixed on the top of the support frame. Two screws are symmetrically arranged in the support frame. The screws are rotatably connected to the support frame, and the screws are threadedly connected to the movable support plate. A driven gear is fixed on the top of the screw, and a driving gear is fixed on the output end of the auxiliary motor. The driving gear is meshed with the driven gear.

[0011] Preferably, the cleaning assembly includes a cleaning ring, a fixing frame is fixed inside the support frame, the cleaning ring is fixed in an opening set in the middle of the fixing frame, a water pipe is fixed inside the cleaning ring, a nozzle is fixed on the outside of the water pipe, the nozzle is arranged inside the cleaning ring, a pump head is fixed on the outside of the fixing frame, the water outlet end of the pump head is fixed to the water inlet of the water pipe, the water inlet end of the pump head is fixed with a water inlet pipe, a water tank is fixed on the end of the water inlet pipe away from the pump head, an auxiliary frame is fixed on the bottom inside the support frame, and the water tank is fixed on the top of the auxiliary frame.

[0012] Preferably, the connecting piece includes a mounting tube, a support rod is slidably provided at the bottom of the mounting tube, the bottom of the support rod is threadedly engaged with the fixing seat threadedly provided at the top of the measuring instrument through a thread, and the top of the mounting tube is threadedly engaged with the threaded column threadedly provided at the bottom of the fixing rod through a thread, the support rod passes through the bottom of the mounting tube, and the support rod is symmetrically provided with a rotating frame on the outside of the end head of the support rod located inside the mounting tube, and a support rod is rotatably provided inside the rotating frame, and openings are evenly provided on the outside of the mounting tube, and a support plate is rotatably provided on the fixed axis provided on the lower side of the opening, and a movable frame is fixedly provided on the inside of the support plate, and one end of the support rod away from the rotating frame is rotatably connected to the movable frame, and a limit frame is fixed inside the mounting tube, and a long hole is provided in the support rod, and the limit frame passes through the long hole and is slidably connected to the support rod through the long hole.

[0013] Preferably, the cleaning ring is arranged below the fixed support plate.

[0014] Preferably, a storage rack is fixedly provided on the outer side of the auxiliary frame and the outer side of the support frame.

[0015] Preferably, the bottom thread of the support frame is provided with symmetrically distributed threaded rods, the bottom end of the threaded rod is rotatably provided with a support foot, and the top end of the threaded rod is fixedly provided with a handle.

[0016] Preferably, symmetrically distributed universal wheels are fixedly provided on the bottom of the support frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention fixes the measuring instrument with a fixing rod, which drives the measuring instrument into the pit. This can effectively prevent the measuring instrument from colliding with the inner wall of the pit during the placement process. By combining multiple fixing rods, the measuring instrument can be placed deeper into the pit step by step.

[0019] 2. When one fixed rod is inserted into the hole and another fixed rod needs to be connected, the first slider and the second slider are driven to move simultaneously by adjusting the gear, and the second pressing block on the movable support plate is separated from the fixed rod, and the first pressing block on the fixed support plate is pressed against the top of the fixed rod in the hole. Then, the movable support plate is driven up by the screw rod, and the fixed rod to be connected is connected to the top of the fixed rod in the hole. The adjusting gear is rotated in the opposite direction to separate the first pressing block from the fixed rod, and the second pressing block is pressed against the top of the installed fixed rod. After that, the fixed rod can be further penetrated into the hole by moving the movable support plate downward, thereby placing the measuring instrument deeper into the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0022] Figure 3This is a schematic diagram of the top structure of the fixed support plate and the movable support plate of the present invention;

[0023] Figure 4 This is a schematic diagram of the bottom structure of the movable support plate of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the drive assembly of the present invention;

[0025] Figure 6 This is a schematic diagram of the relative positions of the first pressing block and the fixing rod when the second pressing block clamps the fixing rod according to the present invention;

[0026] Figure 7 This is a schematic diagram of the relative position structure of the cleaning component and the fixing rod of the present invention;

[0027] Figure 8 This is a schematic diagram of the cleaning component structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the connection between the connecting piece of the present invention, the measuring instrument and the fixing rod;

[0029] Figure 10 This is a schematic cross-sectional view of the structure of the mounting tube portion of the present invention.

[0030] In the figure: 1-support frame; 2-measuring instrument; 3-fixing rod; 4-fixed support plate; 5-movable support plate; 6-mounting slot; 7-through hole; 8-first pressure block; 9-second pressure block; 10-first slider; 11-second slider; 12-adjusting gear; 13-external gear; 14-driving assembly; 15-auxiliary assembly; 16-cleaning assembly; 17-driving motor; 18-mounting frame; 19-rotating shaft; 20-first bevel gear; 21-second bevel gear; 22-sliding hole; 23-limiting rod; 24-rubber pad; 25-Auxiliary motor; 26-Screw; 27-Driven gear; 28-Driving gear; 29-Cleaning ring; 30-Fixed frame; 31-Water pipe; 32-Nozzle; 33-Pump head; 34-Water inlet pipe; 35-Water tank; 36-Auxiliary frame; 37-Storage rack; 38-Threaded rod; 39-Supporting foot; 40-Turning handle; 41-Connecting piece; 42-Mounting cylinder; 43-Supporting rod; 44-Turning frame; 45-Retaining rod; 46-Opening; 47-Retaining plate; 48-Movable frame; 49-Limiting frame; 50-Slot hole; 51-Compression spring. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0032] Example:

[0033] See also Figures 1-10 The diagram shows a vertical strain observation device for earthquake monitoring, comprising a support frame 1 placed on the ground, a fixed rod 3, a drive assembly 14, an auxiliary assembly 15, and a cleaning assembly 16. A measuring instrument 2 is provided in the support frame 1, and the bottom of the fixed rod 3 is connected to the measuring instrument 2. The measuring instrument 2 can measure the vertical strain at a specified depth.

[0034] There are multiple fixing rods 3, and two adjacent fixing rods 3 can be combined and fixed by the cooperation of the threaded columns and threaded grooves provided at both ends of the fixing rods 3. After one fixing rod 3 is deeply inserted into the pit, and the measuring instrument 2 has not yet reached the specified depth, another fixing rod 3 can be threadedly combined with the fixing rod 3 in the pit to send the measuring instrument 2 deeper into the pit until the measuring instrument 2 reaches the specified depth.

[0035] A fixed support plate 4 is fixed in the support frame 1, and a movable support plate 5 is slidably provided in the support frame 1. The bottom of the movable support plate 5 is provided with a mounting groove 6 that cooperates with the top of the fixing rod 3. A through hole 7 is provided in the middle of the fixed support plate 4, and the through hole 7 is used for the fixing rod 3 to pass. A first pressing block 8 is symmetrically provided on the outside of the fixed support plate 4, and a second pressing block 9 is symmetrically provided on the outside of the movable support plate 5. The pressing directions of the first pressing block 8 and the second pressing block 9 both pass through the axis of the through hole 7 to ensure that the inner limit fixing rod 3 is in the center of the through hole 7, thereby ensuring that the measuring instrument 2 is in the center of the pit to avoid contact with the inner wall of the pit. The first pressing block 8 and the second pressing block 9 are fixed with a rubber pad 24 at one end close to the mounting groove 6. The rubber pad 24 contacts the outer side of the fixing rod 3, which can increase the clamping force area and improve the stability of the fixing rod 3 when being clamped by the first pressing block 8 or the second pressing block 9;

[0036] The first sliding block 10 and the second sliding block 11 are arranged outside the movable support plate 5, the adjusting gear 12 is arranged on the top of the movable support plate 5 and used for driving the first sliding block 10 and the second sliding block 11 to move oppositely, the first sliding block 10 and the second sliding block 11 are respectively arranged on the two sides of the adjusting gear 12, so that the first sliding block 10 and the second sliding block 11 cannot move towards the center of the through hole 7 at the same time, the external teeth 13 matched with the adjusting gear 12 are arranged inside the first sliding block 10 and the second sliding block 11, the slide holes 22 are arranged on the movable support plate 5 and the fixed support plate 4, the first pressing block 8 is slidably arranged in the slide hole 22 of the fixed support plate 4, the limiting rod 23 is fixedly arranged on the top of the first pressing block 8, the limiting rod 23 penetrates through the slide hole 22 of the movable support plate 5 and is slidably connected with the top of the support frame 1, the slide holes 22 arranged on the movable support plate 5 are symmetrically distributed, the first sliding block 10 and the second sliding block 11 are respectively slidably arranged in the two groups of symmetrically distributed slide holes 22, the limiting rod 23 penetrates through the first sliding block 10 and is slidably connected with the first sliding block 10, and the second pressing block 9 is arranged on the bottom of the movable support plate 5 and is fixed with the second sliding block 11.

[0037] The driving assembly 14 used for driving the adjusting gear 12 to rotate is arranged outside the movable support plate 5, the auxiliary assembly 15 is arranged in the support frame 1 and used for driving the movable support plate 5 to move, and the cleaning assembly 16 is arranged outside the support frame 1 and used for cleaning the dust and soil adhered to the outer side of the fixed rod 3 taken out from the pit.

[0038] Some embodiments of the present application will be described in detail below with reference to the drawings:

[0039] Please refer to Figures 1-10 In the embodiment, the measuring instrument 2 is fixed by the fixed rod 3, the measuring instrument 2 is driven by the fixed rod 3 to enter the pit, so that the collision between the measuring instrument 2 and the inner wall of the pit in the process of placing the measuring instrument 2 into the pit can be effectively prevented, and the measuring instrument 2 can be placed into the deeper part of the pit step by step through the mutual combination of the plurality of fixed rods 3.

[0040] The driving assembly 14 comprises a driving motor 17, the top of the movable support plate 5 is fixedly provided with a mounting frame 18, a rotating shaft 19 is rotatably arranged in the mounting frame 18, the driving motor 17 is fixedly arranged outside the mounting frame 18, the output end of the driving motor 17 is fixed to one end of the rotating shaft 19, two first bevel gears 20 are fixedly arranged outside the rotating shaft 19, the adjusting gears 12 are provided in two, the two adjusting gears 12 are symmetrically arranged on the two sides of the mounting groove 6, a second bevel gear 21 is fixedly arranged outside the tooth shaft of the adjusting gear 12, the second bevel gear 21 is in meshing connection with the first bevel gear 20, the two first bevel gears 20 are arranged outside the two second bevel gears 21 in sequence, at this time, the two first bevel gears 20 are towards the same direction, the two adjusting gears 12 can be driven to rotate in the same direction through the rotation of the rotating shaft 19, so that the two first resisting blocks or the second resisting blocks symmetrically arranged are used for clamping the fixed rod 3, and the first resisting block or the second resisting block cannot clamp the outside of the fixed rod 3 at the same time in the process that the fixed rod 3 penetrates into the pit, so that the smooth movement of the fixed rod 3 is ensured.

[0041] The auxiliary assembly 15 comprises an auxiliary motor 25, the auxiliary motor 25 is fixedly arranged at the top of the support frame 1, two screw rods 26 are symmetrically arranged in the support frame 1, the screw rods 26 are in rotating connection with the support frame 1, the screw rods 26 are in threaded connection with the movable support plate 5, a driven gear 27 is fixedly arranged at the top end of the screw rod 26, a driving gear 28 is fixedly arranged at the output end of the auxiliary motor 25, and the driving gear 28 is in meshing connection with the driven gear 27.

[0042] In the technical scheme, the operation mode that the device is arranged in the pit is as follows:

[0043] Firstly, the measuring instrument 2 is fixed at the bottom end of the fixed rod 3, the top end of the fixed rod 3 is arranged in the mounting groove 6 at the bottom of the movable support plate 5, the rotating shaft 19 is driven to rotate through the driving motor 17, then the two adjusting gears 12 are driven to rotate in the same direction through the meshing of the first bevel gears 20 and the second bevel gears 21, so that the first sliding block 10 and the second sliding block 11 connected with the adjusting gears 12 are driven to move away from each other through the meshing of the adjusting gears 12 and the external teeth 13, at this time, the second resisting block 9 is driven to move towards the fixed rod 3 through the second sliding block 11, until the fixed rod 3 is clamped through the rubber pad 24, and the top end of the fixed rod 3 is fixed in the mounting groove 6.

[0044] Then, the driving gear 28 is driven to rotate through the auxiliary motor 25, then the two screw rods 26 are driven to rotate through the meshing of the driving gear 28 and the two driven gears 27, so that the movable support plate 5 is driven to move downwards through the threaded action of the screw rods 26, the fixed rod 3 is pushed into the pit, and the measuring instrument 2 is arranged in the pit.

[0045] When the movable support plate 5 moves to about to contact the fixed support plate 4, if the measuring instrument 2 has not reached the specified depth, the driving motor 17 is reversed to drive the rotating shaft 19 to rotate in the opposite direction, thereby driving the two adjusting gears 12 to reverse through the engagement of the first bevel gear 20 and the second bevel gear 21, thereby driving the two first pressing blocks 8 to move toward the fixed rod 3 through the first slider 10 and the limit rod 23, and driving the second pressing block 9 to leave the fixed rod 3 through the second slider 11. When the rubber pad 24 of the first pressing block 8 completely clamps the fixed rod 3, the rubber pad 24 of the second pressing block 9 no longer contacts the fixed rod 3. At this time, the screw 26 is driven to rotate by the auxiliary motor 25, driving the movable support plate 5 to move upward. When the movable support plate 5 moves up to a suitable height, the second fixed rod 3 is assembled at the top of the fixed rod 3 in the pit, and then the above steps are repeated until the measuring instrument 2 is placed in the specified depth in the pit.

[0046] In the implementation of the present technical solution, when the movable support plate 5 drives the fixed rod 3 to go deeper into the pit, the rubber pad 24 of the first pressing block 8 does not contact the fixed rod 3 and does not interfere with the normal movement of the fixed rod 3. When the fixed rod 3 is added, when the first pressing block 8 completely clamps the fixed rod 3, the rubber pad 24 of the second pressing block 9 just leaves the outside of the fixed rod 3, which can prevent the fixed rod 3 from falling accidentally in the pit, and at the same time facilitates the movable support plate 5 to rise along with the screw 26, providing convenience for the subsequent assembly of the fixed rod 3.

[0047] In some embodiments of the present technical solution, Figure 7 and Figure 8 As shown, the cleaning assembly 16 includes a cleaning ring 29, a fixing frame 30 is fixedly provided inside the support frame 1, the cleaning ring 29 is fixedly provided in an opening provided in the middle of the fixing frame 30, a water pipe 31 is fixedly provided inside the cleaning ring 29, a nozzle 32 is fixedly provided on the outside of the water pipe 31, and the nozzle 32 is provided inside the cleaning ring 29. Furthermore, the cleaning ring 29 is provided below the fixed support plate 4, which can prevent the water sprayed by the nozzle 32 from falling on the fixed support plate 4 and making subsequent cleaning inconvenient. A pump head 33 is fixedly provided on the outside of the fixed frame 30, and the water outlet end of the pump head 33 is fixed to the water inlet of the water pipe 31, and the water inlet end of the pump head 33 is fixedly provided with a water inlet pipe 34, and a water tank 35 is fixedly provided on the end of the water inlet pipe 34 away from the pump head 33. An auxiliary frame 36 is fixedly provided at the bottom inside the support frame 1, and the water tank 35 is fixedly provided on the top of the auxiliary frame 36.

[0048] When the fixing rod 3 is recovered, the fixing rod 3 is pulled out of the hole step by step. At this time, the water in the water tank 35 is sucked into the water inlet pipe 34 through the pump head 33, and the water enters the nozzle 32 through the water pipe 31 and is sprayed out. The water is sprayed on the outside of the fixing rod 3, which can wash away the dirt and dust adhering to the outside of the fixing rod 3, so as to prevent the dirt on the fixing rod 3 from drying out after the fixing rod 3 is left for a period of time without being cleaned, which increases the difficulty of cleaning.

[0049] In some embodiments of the present technical solution, Figure 1 and Figure 7 As shown, a storage rack 37 is fixedly provided on the outside of the auxiliary rack 36 and the outside of the support rack 1;

[0050] The arrangement of the storage rack 37 allows the fixing rod 3 to be stored in the storage rack 37 , and the fixing rod 3 and the device to be placed together for easy use.

[0051] In some embodiments of the present technical solution, Figure 9 and Figure 10 As shown, the connecting piece 41 includes a mounting tube 42, a support rod 43 is slidably provided at the bottom of the mounting tube 42, and the bottom of the support rod 43 is threadedly engaged with the fixing seat threadedly provided at the top of the measuring instrument 2, and the top of the mounting tube 42 is threadedly engaged with the threaded column threadedly provided at the bottom of the fixing rod 3. The support rod 43 passes through the bottom of the mounting tube 42, and a rotating frame 44 is symmetrically provided on the outside of the end of the support rod 43 located inside the mounting tube 42. A push rod 45 is rotatably provided inside the rotating frame 44. Openings 46 are evenly provided on the outside of the mounting tube 42, and a push plate 47 is rotatably provided on the fixed axis provided on the lower side of the opening 46. A movable frame 48 is fixedly provided on the inside of the push plate 47, and one end of the push rod 45 away from the rotating frame 44 is rotatably connected to the movable frame 48. A limiting frame 49 is fixed in the mounting tube 42, and a long hole 50 is provided in the push rod 45. The limiting frame 49 passes through the long hole 50 and is slidably connected to the push rod 45 through the long hole 50;

[0052] The principle of the connecting piece 41 fixing the measuring instrument 2 to the bottom of the pit is as follows: when the measuring instrument 2 is transported to the bottom of the pit, as the fixing rod 3 continues to push, the measuring instrument stops moving, and the fixing rod 3 drives the mounting tube 42 to slide toward the measuring instrument 2 on the support rod 43. At this time, the support rod 43 and the mounting tube 42 produce relative displacement, and the end of the support rod 43 located in the mounting tube 42 gradually approaches the top of the mounting tube 42. During the upward movement of the support rod 43, the rotating frame 44 on the support rod 43 gradually approaches the limit frame 49 , so that the support rod 43 pushes the supporting rod 45 to slide on the limiting frame 49 through the rotating frame 44, and then the other end of the supporting rod 45 presses the movable end of the supporting plate 47 out of the opening 46 to the outside of the installation cylinder 42, so that the supporting plate 47 is opened from the opening 46 of the installation cylinder 42 until the movable end of the supporting plate 47 is against the inner wall of the pit, thereby ensuring that the measuring instrument 2 is in the center of the pit when it is installed, and preventing the measuring instrument 2 from accidentally shaking due to external reasons such as earthquakes after being installed in the pit and colliding with the inner wall of the pit;

[0053] Further, such as Figure 10 As shown, a compression spring 51 is fixed to one end of the support rod 43 located in the mounting tube 42. The compression spring 51 is used to accumulate the potential energy generated by the relative displacement of the support rod 43 and the mounting tube 42, so that the support plate 47 can be stored in the opening 46 when the device is subsequently pulled out of the pit.

[0054] In some embodiments of the present technical solution, in order to facilitate the transportation of the device, the support frame 1 is provided with a plurality of wheels 2 arranged symmetrically on the bottom of the support frame 1. Figure 2 As shown in the drawings, the support frame 1 is provided with a plurality of wheels 2 arranged symmetrically on the bottom of the support frame 1, and further, in order to support and fix the device after the device is moved to the designated position, the support frame 1 is provided with a plurality of supporting legs 3 arranged symmetrically on the bottom of the support frame 1. Figure 1 As shown in the drawings, the support frame 1 is provided with a plurality of threaded rods 38 arranged symmetrically on the bottom of the support frame 1, the bottom end of the threaded rod 38 is rotatably provided with a supporting leg 39, and the top end of the threaded rod 38 is fixedly provided with a rotating handle 40. By rotating the rotating handle 40, the threaded rod 38 can be rotated on the bottom of the support frame 1, driving the supporting leg 39 away from the bottom of the support frame 1, so as to lift the wheels to a position not in contact with the ground, thereby preventing the device from moving accidentally with the wheels when placed, and fixing the position of the device.

[0055] In some embodiments of the present technical solution, the fixing frame 30 can be slidably arranged in the support frame 1, and an auxiliary screw rod for driving the movement of the fixing frame 30 is arranged in the support frame 1, and an external motor is further arranged to drive the rotation of the auxiliary screw rod, so as to drive the fixing frame 30, the water pipe 31 and the spray head 32 to move up and down on the outside of the fixing rod 3, so that the spray head 32 repeatedly washes the outside of the fixing rod 3, improving the cleaning effect.

[0056] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0057] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A vertical strain observation device for earthquake monitoring, comprising a support frame (1) placed on the ground, wherein a measuring instrument (2) is provided in the support frame (1); It is characterized in that Also includes: A fixing rod (3), the bottom of the fixing rod (3) is connected to the measuring instrument (2), a plurality of fixing rods (3) are provided, and two adjacent fixing rods (3) can be combined and fixed by the cooperation of the threaded columns and threaded grooves provided at both ends of the fixing rods (3), a fixed support plate (4) is fixedly provided in the support frame (1), a movable support plate (5) is slidably provided in the support frame (1), the bottom of the movable support plate (5) is provided with a mounting groove (6) that cooperates with the top of the fixing rod (3), and a through hole ( 7), a first pressing block (8) is symmetrically provided on the outer side of the fixed support plate (4), a second pressing block (9) is symmetrically provided on the outer side of the movable support plate (5), a first slider (10) and a second slider (11) are provided on the outer side of the movable support plate (5), an adjusting gear (12) is provided on the top of the movable support plate (5) for driving the first slider (10) and the second slider (11) to move in opposite directions, and outer teeth (13) are provided on the inner sides of the first slider (10) and the second slider (11) for cooperating with the adjusting gear (12); A driving assembly (14) for driving the adjusting gear (12) to rotate, the driving assembly (14) being arranged on the outside of the movable support plate (5); An auxiliary component (15), the auxiliary component (15) being arranged in the support frame (1) and being used to drive the movable support plate (5) to move; a cleaning assembly (16), the cleaning assembly (16) being arranged on the outside of the support frame (1) and being used to clean dust and dirt adhering to the outside of the fixing rod (3) taken out from the pit; A connecting piece (41) is used to ensure that the measuring instrument (2) is located at the center of the pit when placed in the pit. The connecting piece (41) is provided at the connection between the fixing rod (3) and the measuring instrument (2).

2. The vertical strain observation device for earthquake monitoring according to claim 1, characterized in that: The driving assembly (14) includes a driving motor (17), a mounting frame (18) is fixedly provided on the top of the movable support plate (5), a rotating shaft (19) is rotatably provided in the mounting frame (18), the driving motor (17) is fixedly provided on the outside of the mounting frame (18), the output end of the driving motor (17) is fixed to one end of the rotating shaft (19), two first bevel gears (20) are fixedly provided on the outside of the rotating shaft (19), two adjusting gears (12) are provided, and the two adjusting gears (12) are symmetrically provided on both sides of the mounting groove (6), a second bevel gear (21) is fixedly provided on the outside of the gear shaft of the adjusting gear (12), and the second bevel gear (21) is meshed and connected with the first bevel gear (20).

3. The vertical strain observation device for earthquake monitoring according to claim 2, characterized in that: The movable support plate (5) and the fixed support plate (4) are both provided with sliding holes (22), the first pressure block (8) is slidably arranged in the sliding hole (22) of the fixed support plate (4), a limiting rod (23) is fixedly provided on the top of the first pressure block (8), the top of the limiting rod (23) passes through the sliding hole (22) of the movable support plate (5), the top of the limiting rod (23) is slidably connected to the top of the support frame (1), the sliding holes (22) provided on the movable support plate (5) are symmetrically distributed, the first slider (10) and the second slider (11) are respectively slidably arranged in two groups of symmetrically distributed sliding holes (22), the limiting rod (23) passes through the first slider (10) and is slidably connected to the first slider (10), the second pressure block (9) is provided at the bottom of the movable support plate (5), and the second pressure block (9) is fixed to the second slider (11).

4. The vertical strain observation device for earthquake monitoring according to claim 3, characterized in that: The two first bevel gears (20) are respectively arranged on the outsides of the two second bevel gears (21).

5. The vertical strain observation device for earthquake monitoring according to claim 1, characterized in that: A rubber pad (24) is fixedly provided on one end of the first pressing block (8) and the second pressing block (9) close to the installation groove (6).

6. The vertical strain observation device for earthquake monitoring according to claim 2, characterized in that: The auxiliary component (15) includes an auxiliary motor (25), the auxiliary motor (25) is fixedly arranged on the top of the support frame (1), two screw rods (26) are symmetrically arranged in the support frame (1), the screw rods (26) are rotatably connected to the support frame (1), the screw rods (26) are threadedly connected to the movable support plate (5), a driven gear (27) is fixedly arranged on the top of the screw rod (26), and a driving gear (28) is fixedly arranged on the output end of the auxiliary motor (25), and the driving gear (28) is meshedly connected with the driven gear (27).

7. The vertical strain observation device for earthquake monitoring according to claim 2, characterized in that: The cleaning assembly (16) includes a cleaning ring (29), a fixing frame (30) is fixedly provided in the support frame (1), the cleaning ring (29) is fixedly provided in an opening provided in the middle of the fixing frame (30), the cleaning ring (29) is provided below the fixed support plate (4), a water pipe (31) is fixedly provided in the cleaning ring (29), a nozzle (32) is fixedly provided on the outside of the water pipe (31), and the nozzle (32) is provided on the cleaning ring (29). ), a pump head (33) is fixedly provided on the outside of the fixing frame (30), the water outlet end of the pump head (33) is fixed to the water inlet of the water pipe (31), the water inlet end of the pump head (33) is fixedly provided with a water inlet pipe (34), and a water tank (35) is fixedly provided at one end of the water inlet pipe (34) away from the pump head (33), an auxiliary frame (36) is fixedly provided on the bottom inside the supporting frame (1), and the water tank (35) is fixedly provided on the top of the auxiliary frame (36).

8. The vertical strain observation device for earthquake monitoring according to claim 7, characterized in that: The connecting member (41) includes a mounting tube (42), a support rod (43) is slidably provided at the bottom of the mounting tube (42), the bottom of the support rod (43) is threadedly engaged with a fixing seat provided at the top of the measuring instrument (2), the top of the mounting tube (42) is threadedly engaged with a threaded column provided at the bottom of the fixing rod (3), the support rod (43) passes through the bottom of the mounting tube (42), and a rotating frame (44) is symmetrically provided on the outside of the end of the support rod (43) located inside the mounting tube (42), and a stop rod (45) is rotatably provided inside the rotating frame (44). The outside of the installation tube (42) is evenly provided with openings (46), and a support plate (47) is rotatably provided on a fixed shaft arranged on the lower side of the inside of the opening (46). A movable frame (48) is fixedly provided on the inside of the support plate (47). The end of the support rod (45) away from the rotating frame (44) is rotatably connected to the movable frame (48). A limiting frame (49) is fixedly provided in the installation tube (42), and a long hole (50) is provided in the support rod (45). The limiting frame (49) passes through the long hole (50) and is slidably connected to the support rod (45) through the long hole (50).

9. The vertical strain observation device for earthquake monitoring according to claim 7, characterized in that: A storage rack (37) is fixedly provided on the outside of the auxiliary rack (36) and the outside of the support rack (1).

10. The vertical strain observation device for earthquake monitoring according to claim 1, characterized in that: The bottom of the support frame (1) is provided with symmetrically distributed threaded rods (38), the bottom end of the threaded rod (38) is rotatably provided with a support foot (39), and the top end of the threaded rod (38) is fixedly provided with a turning handle (40).

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