Pressure static force level gauge capable of automatically adjusting level

Abstract

The invention relates to the technical field of static level gauges, and discloses a pressure static level gauge capable of automatically adjusting levelness, the pressure static level gauge comprises a pressure static level gauge, the back side of the pressure static level gauge is provided with a fixing strip, the back side of the fixing strip is provided with a horizontal adjusting unit, and the horizontal adjusting unit is provided with a fixing unit; the fixing unit is matched with the horizontal adjusting unit to install the pressure static force level gauge on the wall surface, the horizontal adjusting unit and the fixing unit rotate, the horizontal adjusting unit can adjust the self level, and then the horizontal state of the pressure static force level gauge is adjusted; the problem that the inclination angle of the pressure static level gauge is too large due to building settlement to affect accurate detection of the building settlement by the pressure static level gauge is avoided, and meanwhile, the problem that the inclination of the pressure static level gauge causes bending of a connected water pipe to increase water flow resistance to affect a water flow pressure value borne by the pressure static level gauge and further cause detection errors is avoided; manual on-site correction is reduced, and practicability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of static levels, in particular to a pressure static level with automatic level adjustment. Background Art

[0002] The pressure static level is a precision instrument used to measure and monitor the settlement or deformation of structures such as buildings, bridges, and dams. It is based on the principle of static leveling and reflects the settlement or deformation of the structure by measuring the height change of each measuring point relative to a certain reference point or reference surface. When in use, the pressure static level needs to be installed at the key measuring points of the structure and connected to the central monitoring room through a data transmission and processing system. In this way, the monitoring personnel can monitor the height change data of each measuring point in real time and analyze the settlement or deformation of the structure based on these data.

[0003] When installing the existing pressure static level, a bracket is generally used. The bracket is fixed to the back side or bottom surface of the pressure static level, and then the bracket is directly fixed to the wall to achieve the installation of the pressure static level. However, in actual use, some buildings with severe settlement will cause the pressure static level installed on its side wall to tilt as it settles at an inclined angle. Although the pressure static level can still perform accurate settlement measurement after having a certain inclination angle, the angle is small, generally a few degrees or less. When the settlement causes the pressure static level to tilt at a large angle, the pressure plate in the pressure static level is unevenly subjected to the pressure of the water flow, thereby causing detection errors. At the same time, the inclination of the pressure static level will also cause the connected water pipes to bend or bend, increasing the resistance of water flowing therein, affecting the accuracy of the pressure static level in monitoring the settlement through the pressure generated by the water flow. The existing method to avoid the pressure static level from affecting the detection due to excessively large angles is to calibrate it manually on site, which is time-consuming, labor-intensive, and inconvenient to use. Therefore, a pressure static level with automatic level adjustment is proposed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a pressure static level with automatic level adjustment to solve the background technical problems.

[0005] To achieve the above object, the present invention provides the following technical solution: a pressure static level with automatic level adjustment, comprising a pressure static level, a fixing bar is installed on the back side of the pressure static level, a level adjustment unit is arranged on the back side of the fixing bar, and a fixing unit is arranged on the level adjustment unit;

[0006] The fixing unit comprises a fixing plate, a fixing hole is provided on the fixing plate, and a shaft is fixedly connected to a side wall of the fixing plate;

[0007] The horizontal adjustment unit includes a cross bar, with adjustment frames at both ends of the cross bar, counterweights installed on the adjustment frames, a vertical bar fixedly connected to the middle of the cross bar, a rotating hole provided in the middle of the cross bar, an axle rod rotatably connected in the rotating hole, two mounting holes provided on the side wall of the vertical bar, and the fixing strip is fixed to the vertical bar through bolts and the mounting holes.

[0008] Preferably, two adjustment grooves are provided on the outer wall of the crossbar, and the two adjustment frames are respectively slidably connected to the two adjustment grooves. A threaded rod is rotatably connected in the adjustment groove. One end of the threaded rod passes through the crossbar and is provided with a screw head. The threaded rod is threadedly connected to the adjustment frame.

[0009] Preferably, a threaded hole is formed on the side wall of the adjustment frame, a connecting screw is fixedly connected to the side wall of the counterweight, and the connecting screw is threadedly connected to the threaded hole.

[0010] Preferably, a limiting groove is provided on the inner wall of the rotating hole, a sealing cover is inserted into the limiting groove and the rotating hole, an electromagnetic block for limiting the rotation of the shaft is embedded in the side wall of the sealing cover, and a buckle groove is provided on the front side of the sealing cover;

[0011] A circular disc is fixed in the middle of the vertical rod, and a circular groove is provided on the side wall of the circular disc. A vertical rod is rotatably connected in the circular groove. A first electrode is installed on the outer wall of the vertical rod, and a baffle is installed at the opening of the circular groove. Two second electrodes are installed on the side wall of the baffle, which are respectively located on both sides of the first electrode. The movable range of the first electrode coincides with that of the second electrode, and the second electrode contacts the first electrode to control the start and stop of the electromagnetic block.

[0012] Preferably, an arc hole is provided on the baffle plate, and two threaded columns are movably inserted into the arc hole. One end of the threaded column close to the circular groove is fixedly connected to the second electrode, and the other end of the threaded column is threadedly connected to a nut, and the position of the second electrode is adjusted by the threaded column and the nut.

[0013] Preferably, the outer wall of the shaft is fixedly connected to a detection disk, and the side wall of the detection disk is provided with two arc grooves, and pressure sensors are installed on the inner walls at both ends of the arc grooves. The outer wall of the cross bar is fixedly connected to two symmetrically distributed sliding rods, and the two sliding rods slide with the inner walls of the two arc grooves respectively. Two arc springs are provided in the arc groove, and the two ends of the arc springs are respectively against the sliding rod and the pressure sensor.

[0014] Preferably, an arc rod is fixedly connected between two pressure sensors located in the same arc groove, an arc spring is sleeved on the outer wall of the sliding rod, and the sliding rod is slidably connected to the outer wall of the arc rod.

[0015] Preferably, scale lines are provided on the crossbar.

[0016] Preferably, the outer wall of the baffle is provided with angle scales.

[0017] Preferably, a clearance hole is formed through the front side of the vertical rod, and the clearance hole coincides with one of the fixing holes.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention installs the pressure static level on the wall through the cooperation of the fixing unit and the horizontal adjustment unit. The horizontal adjustment unit rotates with the fixing unit, and the horizontal adjustment unit can adjust its own level, thereby adjusting the horizontal state of the pressure static level, thereby preventing the pressure static level from tilting too much due to building settlement, thereby affecting the accurate detection of the building settlement by the pressure static level, and simultaneously preventing the pressure static level from tilting and causing the connected water pipe to bend, thereby increasing the water flow resistance and affecting the water flow pressure value received by the pressure static level, thereby causing detection errors, reducing manual on-site corrections and improving practicality.

[0020] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the overall structure of a pressure static level with automatic level adjustment provided in some embodiments of the present invention;

[0022] Figure 2 A schematic diagram of the structure from a back side perspective of the overall structure of a pressure static level with automatic level adjustment provided in some embodiments of the present invention;

[0023] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0024] Figure 4 A schematic diagram of the internal structure of a circular groove of a pressure static level with automatic level adjustment provided in some embodiments of the present invention;

[0025] Figure 5 A detailed structural schematic diagram of a level adjustment unit of a pressure static level with automatic level adjustment provided in some embodiments of the present invention;

[0026] Figure 6 A schematic diagram of the structure of a counterweight block of a pressure static level with automatic level adjustment provided in some embodiments of the present invention;

[0027] Figure 7 A schematic diagram of the internal structure of a rotating hole of a pressure static level with automatic level adjustment provided in some embodiments of the present invention;

[0028] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;

[0029] Fig. 9 A schematic diagram of the installation position structure of an electromagnetic block and a sealing cover of a pressure static level with automatic level adjustment provided in some embodiments of the present invention;

[0030] Fig.10 A schematic diagram of the internal structure of an adjustment tank of a pressure static level with automatic level adjustment provided in some embodiments of the present invention;

[0031] Fig.11 for Fig.10 A partial enlarged view of point C in the middle;

[0032] Fig.12 A schematic diagram of the structure of a detection plate of a pressure static level with automatic level adjustment provided in some embodiments of the present invention;

[0033] Fig.13 for Fig.12 A partial enlarged view of point D in the middle;

[0034] Fig.14 for Fig.12 A partial enlarged view of point E in the middle.

[0035] In the figure: 1, pressure static level; 2, fixing bar; 21, arc hole; 22, threaded column; 23, second electrode; 24, nut; 25, angle scale; 3, fixing unit; 31, fixing plate; 32, fixing hole; 33, shaft; 4, horizontal adjustment unit; 41, cross bar; 42, adjustment slot; 43, adjustment frame; 44, counterweight; 45, vertical bar; 46, mounting hole; 47, rotating hole; 48, threaded rod; 49, screw head; 410, threaded hole ; 411, connecting screw; 412, scale line; 5, give way hole; 6, limit groove; 7, sealing cover; 8, buckle groove; 9, electromagnetic block; 10, detection disk; 11, arc groove; 12, sliding rod; 13, pressure sensor; 14, arc spring; 15, arc rod; 16, circular disk; 17, circular groove; 18, vertical rod; 19, first electrode; 20, baffle; 21, arc hole; 22, threaded column; 23, second electrode; 24, nut; 25, angle scale. DETAILED DESCRIPTION

[0036] 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 technical field without creative work are within the scope of protection of the present invention.

[0037] like Figures 1 to 14As shown, a pressure static level with automatic level adjustment in the present invention comprises a pressure static level 1, a fixing bar 2 is installed on the back side of the pressure static level 1, a level adjustment unit 4 is installed on the back side of the fixing bar 2, and a fixing unit 3 is installed on the level adjustment unit 4;

[0038] The fixing unit 3 includes a fixing plate 31, and two fixing holes 32 are provided on the side wall of the fixing plate 31. The fixing plate 31 is fixed to the wall surface by passing through the fixing holes 32 with wall nails, and a shaft 33 is fixedly connected to the side wall of the fixing plate 31;

[0039] The horizontal adjustment unit 4 includes a cross bar 41, and adjustment frames 43 are installed on the outer walls of both ends of the cross bar 41. A counterweight 44 is installed on the adjustment frame 43. A vertical rod 45 is fixedly connected to the middle of the cross bar 41. The vertical rod 45 is vertically distributed with the cross bar 41. Two mounting holes 46 are provided on the side wall of the vertical rod 45. The fixing bar 2 is fixed to the vertical rod 45 through the mounting holes 46 with bolts. A rotating hole 47 is provided in the middle of the cross bar 41. One end of the shaft 33 rotates in the rotating hole 47 through a bearing; the cross bar 41 rotates with the shaft 33 as the axis, and the two ends thereof are used to rotate. The gravity of the counterweight block 44 is used to accurately find the level, and the vertical rod 45 fixes the pressure static level 1 through the fixing bar 2, so that the pressure static level 1 is always kept in a horizontal state, thereby preventing the pressure static level 1 from tilting too much due to building settlement, which affects the accurate detection of building settlement by the pressure static level 1. At the same time, the pressure static level 1 is prevented from tilting and causing the connected water pipe to bend, which increases the water flow resistance and affects the water flow pressure value received by the pressure static level 1, thereby causing detection errors, reducing manual on-site corrections and improving practicality.

[0040] In order to further improve the adaptability, two adjustment grooves 42 are formed through the outer wall of the cross bar 41, and two adjustment frames 43 are respectively slidably connected to the two adjustment grooves 42. The inner wall of the adjustment groove 42 is rotatably connected with a threaded rod 48. One end of the threaded rod 48 passes through the outside of the cross bar 41 and is fixedly connected with a screw head 49. The threaded rod 48 is threadedly connected to the adjustment frame 43. By rotating the screw head 49, the threaded rod 48 can be driven to rotate, and the threaded rod 48 drives the adjustment frame 43 to move in the adjustment groove 42. Then, by moving the adjustment frame 43, the position of the counterweight 44 is adjusted. A scale line 412 is provided on the cross bar 41. The scale line 412 can be used to accurately adjust the position of the counterweight 44 to meet different usage conditions, ensure the level of the cross bar 41, and meet the level adjustment of different types of pressure static level gauges 1, thereby improving adaptability.

[0041] A threaded hole 410 is provided on the side wall of the adjustment frame 43, and a connecting screw 411 is fixedly connected to the side wall of the counterweight block 44. The connecting screw 411 is threadedly connected to the threaded hole 410. The counterweight block 44 is detachable and convenient to carry and install. Counterweight blocks 44 of different weights can also be selected for use to improve adaptability.

[0042] The inner wall of the rotating hole 47 is provided with two limiting grooves 6, and a sealing cover 7 is inserted in the limiting groove 6 and the rotating hole 47. The limiting groove 6 can limit the inserted sealing cover 7 so that it does not rotate. A buckle groove 8 is provided on the front side of the sealing cover 7, and the buckle groove 8 is used to conveniently buckle the sealing cover 7 from the rotating hole 47 and the limiting groove 6. An electromagnetic block 9 for limiting the shaft rod 33 is embedded and installed on one side of the sealing cover 7. A disc 16 is fixed to the middle of the vertical rod 45, and a circular groove 17 is provided on the side wall of the disc 16. A vertical rod 18 is rotatably connected in the circular groove 17. When the pressure static level 1 is tilted due to building settlement, the vertical rod 18 always remains vertically downward according to its own gravity. A baffle 20 is installed at the opening of the circular groove 17, and an arc hole 21 is provided on the baffle 20. Two threaded columns 22 are movably penetrated in the arc hole 21. The threaded column 22 is close to the circular groove 1 A second electrode 23 is fixedly installed at one end of the inner wall of the arc hole 21, and the diameter of the second electrode 23 is larger than the inner wall width of the arc hole 21. A nut 24 is threadedly connected to the other end of the threaded column 22. The outer wall of the vertical rod 18 is fixedly connected to the first electrode 19. The range of movement of the first electrode 19 coincides with the second electrode 23. The outer wall of the baffle 20 is provided with an angle scale 25. The pressure static level 1 can still perform accurate measurement within a certain range of angle inclination. Even if this angle is very small, during the installation stage of the pressure static level 1, the angle between the two second electrodes 23 and the first electrode 19 is adjusted by using the angle scale 25. This angle is the maximum inclination angle that the pressure static level 1 can accurately measure. According to the maximum inclination angle value that the pressure static level 1 can accurately measure, the position of the second electrode 23 is adjusted, and the nut 24 is tightened after the adjustment is completed.

[0043] When the pressure static level 1 is installed normally, the electromagnetic block 9 is in working state, and the electromagnetic block 9 magnetically attracts the shaft 33, so that the cross bar 41 does not rotate, and avoids the cross bar 41 from swinging due to human contact or excessive wind, which causes the pressure static level 1 to swing and affects the accuracy of building settlement monitoring;

[0044] When the pressure static level 1 is tilted due to sedimentation of the building, the vertical rod 18 remains downward, and the disk 16 and the baffle 20 rotate accordingly, so that the second electrode 23 approaches the first electrode 19. When the tilt angle of the pressure static level 1 exceeds the maximum tilt angle that can be accurately measured, the second electrode 23 contacts the first electrode 19. The second electrode 23 and the first electrode 19 are connected to a control relay, so that the positive and negative poles of the control relay are reversed to turn off the electromagnetic block 9. At this time, the shaft rod 33 is unrestricted, and the level of the cross bar 41 is adjusted by the gravity of the counterweight block 44. The cross bar 41 corrects the tilt of the pressure static level 1 through the vertical rod 45 to make it return to the horizontal position. In the horizontal state, a time relay is also provided. After the second electrode 23 contacts the first electrode 19, the time relay starts the countdown. During the countdown, the pressure static level 1 returns to the horizontal state and remains stable. After the countdown is over, the time relay reverses the circuit of the control relay again, so that the electromagnetic block 9 restarts to restrict the cross bar 41, so that the cross bar 41 cannot rotate, and the pressure static level 1 remains horizontal and stable. The horizontal correction of the pressure static level 1 is controlled by the inclination angle of the circuit, which can improve the stability of the pressure static level 1, ensure accurate detection of building settlement, reduce manual on-site correction, and facilitate use.

[0045] A clearance hole 5 is formed through the front side of the vertical rod 45, and the clearance hole 5 coincides with one of the fixing holes 32. The clearance hole 5 can make way for one of the fixing holes 32, so that a longer wall nail can be passed through the clearance hole 5, then inserted into the fixing hole 32, and finally nailed into the wall for fixing.

[0046] In order to measure the inclination angle of the building's settlement, the outer wall of the shaft rod 33 is fixedly connected to a detection plate 10, and the side wall of the detection plate 10 is provided with two arc grooves 11, and the inner walls of both ends of the arc groove 11 are installed with pressure sensors 13, and the outer wall of the cross bar 41 is fixedly connected to two symmetrically distributed sliding rods 12, and the two sliding rods 12 slide with the inner walls of the two arc grooves 11 respectively, and an arc rod 15 is fixedly connected between the two pressure sensors 13 located in the same arc groove 11, and the outer wall of the arc rod 15 is sleeved with two arc springs 14, and the two ends of the arc spring 14 are respectively against the sliding rod 12 and the pressure sensor 13, and the arc The rod 15 restricts the arc spring 14 so that it will not be deformed or bent. The slide bar 12 is slidably connected to the outer wall of the arc rod 15. When the pressure static level 1 is tilted and horizontal correction is performed, the cross bar 41 will drive the slide bar 12 to slide in the arc groove 11. The movement of the slide bar 12 will cause two of the arc springs 14 in the two arc grooves 11 to be compressed. The compressed arc spring 14 will apply pressure to the pressure sensor 13. The pressure value of the pressure sensor 13 during installation is used as a reference. The tilt angle of the building settlement is calculated by the change in the pressure value detected by the pressure sensor 13. The specific tilt angle is estimated as follows:

[0047] System Modeling:

[0048] Assume that the radius of the circular groove is R, the initial arc length of the spring (when not compressed) is L0, the corresponding central angle is θ0, the spring constant is k, and when the rod rotates, the length of the spring compression is ΔL;

[0049] Geometric relations:

[0050] The relationship between the central angle θ0 and the arc length L0 is: L0 = Rθ0 (where θ0 is in radians);

[0051] When the spring is compressed by ΔL, the new arc length L = L0-ΔL;

[0052] The corresponding new center angle θ is:

[0053] Mechanical properties of spring:

[0054] The force F generated when the spring is compressed by ΔL is: F = kΔL;

[0055] Pressure Sensor:

[0056] The pressure P measured by the pressure sensor is equal to the force F generated by the spring (assuming that the contact between the sensor and the spring is rigid and there is no energy loss);

[0057] Solve for the rotation angle:

[0058] Knowing that P = kΔL, we can solve

[0059] Substituting ΔL into the formula for θ yields:

[0060] because So the rotation angle Δθ is:

[0061]

[0062] The building inclination angle is calculated through the above model. In practical applications, the model needs to be calibrated to take into account the nonlinear characteristics and errors of the actual system.

[0063] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pressure static level with automatic level adjustment, comprising a pressure static level (1), characterized in that: A fixing strip (2) is installed on the back side of the pressure static level (1), a level adjustment unit (4) is arranged on the back side of the fixing strip (2), and a fixing unit (3) is arranged on the level adjustment unit (4); The fixing unit (3) comprises a fixing plate (31), a fixing hole (32) is provided on the fixing plate (31), and a shaft (33) is fixedly connected to a side wall of the fixing plate (31); The horizontal adjustment unit (4) comprises a cross bar (41), both ends of which are provided with adjustment frames (43), a counterweight (44) is installed on the adjustment frame (43), a vertical bar (45) is fixedly connected to the middle of the cross bar (41), a rotating hole (47) is provided in the middle of the cross bar (41), the shaft (33) is rotatably connected in the rotating hole (47), the side wall of the vertical bar (45) is provided with two mounting holes (46), and the fixing strip (2) is fixed to the vertical bar (45) by bolts matching the mounting holes (46).

2. A pressure static level with automatic level adjustment according to claim 1, characterized in that: The outer wall of the cross bar (41) is provided with two adjustment grooves (42), and the two adjustment frames (43) are respectively slidably connected to the two adjustment grooves (42). A threaded rod (48) is rotatably connected in the adjustment groove (42), one end of the threaded rod (48) passes through the cross bar (41) and is provided with a screw head (49), and the threaded rod (48) is threadedly connected to the adjustment frame (43).

3. A pressure static level with automatic level adjustment according to claim 1, characterized in that: A threaded hole (410) is formed on the side wall of the adjustment frame (43), a connecting screw (411) is fixedly connected to the side wall of the counterweight (44), and the connecting screw (411) is threadedly connected to the threaded hole (410).

4. A pressure static level with automatic level adjustment according to claim 1, characterized in that: A limiting groove (6) is provided on the inner wall of the rotating hole (47), a sealing cover (7) is inserted into the limiting groove (6) and the rotating hole (47), an electromagnetic block (9) for limiting the rotation of the shaft (33) is embedded in the side wall of the sealing cover (7), and a buckle groove (8) is provided on the front side of the sealing cover (7); A disk (16) is fixed in the middle of the vertical rod (45), a circular groove (17) is provided on the side wall of the disk (16), a vertical rod (18) is rotatably connected in the circular groove (17), a first electrode (19) is installed on the outer wall of the vertical rod (18), a baffle (20) is installed at the opening of the circular groove (17), two second electrodes (23) are installed on the side wall of the baffle (20) and are respectively located on both sides of the first electrode (19), the movable range of the first electrode (19) overlaps with the second electrode (23), and the second electrode (23) and the first electrode (19) contact to control the start and stop of the electromagnetic block (9).

5. A pressure static level with automatic level adjustment according to claim 4, characterized in that: The baffle plate (20) is provided with an arc hole (21), and two threaded columns (22) are movably inserted into the arc hole (21). One end of the threaded column (22) close to the circular groove (17) is fixedly connected to the second electrode (23), and the other end of the threaded column (22) is threadedly connected to a nut (24). The position of the second electrode (23) is adjusted by the threaded column (22) and the nut (24).

6. A pressure static level with automatic level adjustment according to claim 1, characterized in that: The outer wall of the shaft rod (33) is fixedly connected to a detection disk (10), and the side wall of the detection disk (10) is provided with two arc grooves (11). The inner walls at both ends of the arc grooves (11) are both provided with pressure sensors (13). The outer wall of the cross bar (41) is fixedly connected to two symmetrically distributed sliding rods (12), and the two sliding rods (12) slide on the inner walls of the two arc grooves (11) respectively. Two arc springs (14) are arranged in the arc groove (11), and the two ends of the arc spring (14) are respectively against the sliding rod (12) and the pressure sensor (13).

7. A pressure static level with automatic level adjustment according to claim 6, characterized in that: An arc rod (15) is fixedly connected between two pressure sensors (13) located in the same arc groove (11); an arc spring (14) is sleeved on the outer wall of the slide rod (12); and the slide rod (12) is slidably connected to the outer wall of the arc rod (15).

8. A pressure static level with automatic level adjustment according to claim 2, characterized in that: The crossbar (41) is provided with scale lines (412).

9. A pressure static level with automatic level adjustment according to claim 5, characterized in that: The outer wall of the baffle plate (20) is provided with an angle scale (25).

10. A pressure static level with automatic level adjustment according to claim 1, characterized in that: A clearance hole (5) is formed through the front side of the vertical rod (45), and the clearance hole (5) coincides with one of the fixing holes (32).

Images