Soil pressure gauge pressure calibration device

Abstract

The utility model discloses a pressure calibration device of a soil pressure gauge, which belongs to the technical field of pressure calibration of the soil pressure gauge, and comprises a lower calibration disc and an upper calibration disc, the upper calibration disc is arranged above the lower calibration disc, a mounting mechanism convenient for mounting and dismounting the upper calibration disc is arranged outside the lower calibration disc and the upper calibration disc, and the lower calibration disc and the upper calibration disc are arranged on the mounting mechanism. The bottom of the upper calibration disc is provided with a sealing assembly, the installation mechanism is arranged, a soil pressure meter is arranged in the lower calibration disc during use, then the upper calibration disc can be installed on the lower calibration disc through the installation mechanism, and when the upper calibration disc needs to be disassembled, the upper calibration disc can be rapidly disassembled through the installation mechanism, so that the installation is convenient, and the operation is convenient. When the upper calibration disc is located on the lower calibration disc, the influence of the outside on the mounting mechanism is small, and the phenomenon that the upper calibration disc is accidentally separated from the lower calibration disc is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of soil pressure gauge pressure calibration, in particular to a soil pressure gauge pressure calibration device. Background Art

[0002] The earth pressure gauge is composed of a back plate, a sensing plate, a signal transmission cable, a vibrating wire and an exciting electromagnetic coil. It is an effective monitoring device for understanding the changes in earth pressure inside the measured structure and for simultaneously measuring the temperature of the buried point. As an instrument for measuring earth pressure, the accuracy of the earth pressure gauge is directly related to the quality and safety of the engineering project. Through calibration, it can be ensured that the data measured by the earth pressure gauge is true and reliable, avoiding decision-making errors caused by measurement errors.

[0003] The existing earth pressure gauge pressure calibration device has the following disadvantages: the appearance of the traditional earth pressure gauge is cylindrical, so the earth pressure gauge calibration device is also a cylindrical device. When the earth pressure gauge is installed inside the calibration device, due to the appearance and shape characteristics of the cylinder, it is very inconvenient to disassemble the earth pressure gauge. Forcibly dumping or pulling the data cable will only cause damage to the earth pressure gauge;

[0004] The existing patent (publication number: CN211347214U) is a pressure calibration device for an earth pressure gauge. After the calibration work is completed, the pressing plate is pressed down, and the movement of the return sleeve can drive the steel wire to pull the positioning rod, so that the positioning rod is separated from the positioning body. As a result, the first spring resets the mounting seat, and the earth pressure gauge is ejected at the last moment, which is convenient for the disassembly of the earth pressure gauge. A mechanism is provided for the calibration device to facilitate the disassembly and assembly of the earth pressure gauge, which is convenient for the user to use and disassemble, and avoids damage to the earth pressure gauge due to disassembly and assembly, and is convenient for promotion.

[0005] In view of the above problems, the existing patent provides a solution, but when calibrating the soil pressure gauge, the second spring may be affected by external factors, causing the second spring to shake. The shaking of the second spring will cause the return sleeve to drop, and the drop of the return sleeve will pull the steel wire and the positioning rod to move, eventually causing the upper calibration plate to separate from the lower calibration plate, thereby causing errors in the calibration results.

[0006] Therefore, a pressure calibration device for an earth pressure gauge is proposed. Summary of the invention

[0007] The purpose of the utility model is to provide a soil pressure gauge pressure calibration device, which can solve the problem that when an existing soil pressure gauge pressure calibration device is calibrating the soil pressure gauge, the second spring may be affected by the outside world, thereby causing the second spring to shake, and the shaking of the second spring will cause the return sleeve to drop, and the drop of the return sleeve will pull the steel wire and the positioning rod to move, eventually causing the upper calibration plate to separate from the lower calibration plate, thereby causing errors in the calibration result.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a soil pressure gauge pressure calibration device, comprising a lower calibration plate and an upper calibration plate, wherein the upper calibration plate is arranged above the lower calibration plate, and the outer parts of the lower calibration plate and the upper calibration plate are provided with a mounting mechanism for facilitating the disassembly and assembly of the upper calibration plate, and a sealing assembly is arranged at the bottom of the upper calibration plate;

[0009] The mounting mechanism includes a rectangular frame, a slide groove, an extension plate, a sliding rod, a protective shell, a sliding frame and a first spring. The rectangular frame is bolted to the outer wall of the lower calibration disk, the slide groove is opened inside the rectangular frame, the extension plate is bolted to the outer wall of the upper calibration disk, the sliding rod is slidably connected to the inside of the extension plate, the protective shell is bolted to the side wall of the rectangular frame, the sliding frame is slidably connected to the inside of the slide groove, the first spring is welded to the side wall of the sliding frame, and one end of the spring is welded to the inner wall of the protective shell.

[0010] Preferably, the sealing assembly includes a concave gasket and a sealing gasket, the concave gasket is bonded to the top of the lower calibration disk, the sealing gasket is bonded to the bottom of the upper calibration disk, and the outer wall of the sealing gasket is tightly fitted with the inner wall of the concave gasket.

[0011] Preferably, a round rod is welded on the side wall of the sliding frame, a pull ring is welded on one end of the round rod, and one end of the round rod passes through the protective shell and is slidably connected to the protective shell.

[0012] Preferably, a sealing ring is bonded inside the protective shell, and the round rod is slidably connected to the sealing ring.

[0013] Preferably, two second springs are welded to the bottom of the extension plate to facilitate the timely rebound of the upper calibration plate, and the second springs are made of stainless steel.

[0014] Preferably, a calibration pressure rod is slidably connected to the interior of the upper calibration disk, and a calibration pressure plate is provided at the bottom of the calibration pressure rod.

[0015] Preferably, a buffer pad for increasing the service life of the external device is bonded to the inside of the lower calibration disk, and the side wall of the buffer pad fits tightly with the inner wall of the lower calibration disk.

[0016] Preferably, four supporting legs are bolted to the outer wall of the lower calibration plate to improve the stability of the upper calibration plate and the lower calibration plate.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The present application is provided with an installation mechanism. When in use, the earth pressure gauge is placed in the lower calibration plate, and then the upper calibration plate can be installed on the lower calibration plate through the installation mechanism. When the upper calibration plate needs to be removed, it can be quickly removed through the installation mechanism. When the upper calibration plate is on the lower calibration plate, the installation mechanism is little affected by the outside world, and the upper calibration plate will not accidentally separate from the lower calibration plate.

[0019] 2. The present application is provided with a sealing component, which can improve the sealing between the upper calibration disk and the lower calibration disk when in use, and prevent foreign matter from entering the interior of the upper calibration disk and the lower calibration disk to affect the calibration result. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is the overall structural view of the utility model;

[0022] Figure 2 This is a structural view of the sealing assembly of the utility model;

[0023] Figure 3 It is a left view of the utility model;

[0024] Figure 4 For this utility model Figure 3 The three-dimensional cross-section view at AA in the middle;

[0025] Figure 5 For this utility model Figure 4 Enlarged view of point A in the middle.

[0026] Description of reference numerals:

[0027] 1. Lower calibration plate; 2. Upper calibration plate; 3. Mounting mechanism; 4. Sealing assembly; 5. Round rod; 6. Pull ring; 7. Sealing ring; 8. Second spring; 9. Calibration pressure rod; 10. Calibration pressure plate; 11. Buffer pad; 12. Support leg; 301. Rectangular frame; 302. Slide groove; 303. Extension plate; 304. Slide rod; 305. Protective shell; 306. Slide frame; 307. First spring; 401. Concave pad; 402. Sealing pad. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figures 1 to 5 , the utility model provides a technical solution:

[0030] A soil pressure gauge pressure calibration device comprises a lower calibration plate 1 and an upper calibration plate 2, wherein the upper calibration plate 2 is arranged above the lower calibration plate 1, and an installation mechanism 3 is arranged outside the lower calibration plate 1 and the upper calibration plate 2 for facilitating the disassembly and assembly of the upper calibration plate 2, and a sealing assembly 4 is arranged at the bottom of the upper calibration plate 2;

[0031] The mounting mechanism 3 includes a rectangular frame 301, a slide groove 302, an extension plate 303, a sliding rod 304, a protective shell 305, a sliding frame 306 and a first spring 307. The rectangular frame 301 is bolted to the outer wall of the lower calibration disk 1, the slide groove 302 is opened inside the rectangular frame 301, the extension plate 303 is bolted to the outer wall of the upper calibration disk 2, the sliding rod 304 is slidably connected to the inside of the extension plate 303, the protective shell 305 is bolted to the side wall of the rectangular frame 301, the sliding frame 306 is slidably connected to the inside of the slide groove 302, the first spring 307 is welded to the side wall of the sliding frame 306, and one end of the spring is welded to the inner wall of the protective shell 305.

[0032] Specifically, Figure 5 As shown, a round rod 5 is welded on the side wall of the sliding frame 306 , a pull ring 6 is welded on one end of the round rod 5 , and one end of the round rod 5 penetrates the protective shell 305 and is slidably connected to the protective shell 305 .

[0033] Specifically, Figure 5 As shown, a sealing ring 7 is bonded to the inside of the protective shell 305 , and the round rod 5 is slidably connected to the sealing ring 7 .

[0034] Specifically, Figure 5 As shown, two second springs 8 are welded at the bottom of the extension plate 303 to facilitate the timely rebound of the upper calibration plate 2, and the second springs 8 are made of stainless steel.

[0035] Specifically, Figure 4 As shown, a calibration pressure rod 9 is slidably connected inside the upper calibration plate 2 , and a calibration pressure plate 10 is provided at the bottom of the calibration pressure rod 9 .

[0036] Specifically, Figure 4As shown, a buffer pad 11 for increasing the service life of external equipment is bonded to the interior of the lower calibration plate 1 , and the side wall of the buffer pad 11 fits tightly with the inner wall of the lower calibration plate 1 .

[0037] Specifically, Figure 1 As shown, four support legs 12 for improving the stability of the upper calibration plate 2 and the lower calibration plate 1 are bolted to the outer wall of the lower calibration plate 1 .

[0038] When the soil pressure gauge needs to be calibrated, the soil pressure gauge can be placed inside the lower calibration plate 1, and then the upper calibration plate 2 is placed just above the lower calibration plate 1, and then the upper calibration plate 2 is pressed down. At this time, the bottom side wall of the slide bar 304 contacts the inner wall of the slider, so that the slide frame 306 moves to one side along the slide groove 302, and then the first spring 307 contracts, and then the slide bar 304 continues to descend until the bottom of the slide bar 304 contacts the top of the extension plate 303. At this time, the first spring 307 drives the slide frame 306 to reset, thereby fixing the position of the slide bar 304. After the position of the slide bar 304 is fixed, the upper calibration plate 2 will also be fixed, and then the external equipment pushes the calibration pressure rod 9 to drive the calibration pressure plate 10 to descend to squeeze the soil pressure gauge located inside for calibration. After the calibration is completed, the user can pull the pull ring 6 and the round rod 5 to one side to move the slide frame 306 to one side, and then because of the elastic force of the second spring 8, the upper calibration plate 2 will be directly ejected to prevent the soil pressure gauge from being damaged when disassembling.

[0039] Specifically, Figure 5 As shown, the sealing assembly 4 includes a concave gasket 401 and a sealing gasket 402. The concave gasket 401 is bonded to the top of the lower calibration disk 1, and the sealing gasket 402 is bonded to the bottom of the upper calibration disk 2. The outer wall of the sealing gasket 402 fits tightly with the inner wall of the concave gasket 401.

[0040] When the upper calibration plate 2 and the lower calibration plate 1 are installed together, the sealing gasket 402 will enter the interior of the concave gasket 401, thereby improving the sealing between the upper calibration plate 2 and the lower calibration plate 1 to prevent affecting the calibration of the soil pressure gauge.

[0041] By adopting the above technical solution, the problem that when an existing earth pressure gauge pressure calibration device is calibrating the earth pressure gauge, the second spring 8 may be affected by the outside world, causing the second spring 8 to shake, and the shaking of the second spring 8 will cause the return sleeve to descend, and the descent of the return sleeve will pull the steel wire and the positioning rod to move, eventually causing the upper calibration disk 2 to separate from the lower calibration disk 1, thereby causing errors in the calibration result.

[0042] Working principle: When the earth pressure gauge needs to be calibrated, the earth pressure gauge can be placed inside the lower calibration plate 1, and then the upper calibration plate 2 is placed just above the lower calibration plate 1, and then the upper calibration plate 2 is pressed down, and then the sealing pad 402 will enter the inside of the concave pad 401, thereby improving the sealing between the upper calibration plate 2 and the lower calibration plate 1 to prevent affecting the calibration of the earth pressure gauge. At this time, the bottom side wall of the slide bar 304 contacts the inner wall of the slider, so that the slide frame 306 moves to one side along the slide groove 302, and then the first spring 307 contracts, and then the slide bar 304 continues to descend until the bottom of the slide bar 304 is in contact with the extension The top of the plate 303 contacts, and the first spring 307 drives the slide frame 306 to reset, thereby fixing the position of the slide rod 304. After the slide rod 304 is fixed, the upper calibration disk 2 will also be fixed, and then the external equipment pushes the calibration pressure rod 9 to drive the calibration pressure plate 10 to descend to squeeze the soil pressure gauge located inside to perform calibration. After the calibration is completed, the user can pull the pull ring 6 and the round rod 5 to one side to move the slide frame 306 to one side, and then because of the elastic force of the second spring 8, the upper calibration disk 2 will be directly ejected to prevent the soil pressure gauge from being damaged when disassembling.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A pressure calibration device for an earth pressure gauge, comprising a lower calibration plate (1) and an upper calibration plate (2), characterized in that: The upper calibration plate (2) is arranged above the lower calibration plate (1); the exterior of the lower calibration plate (1) and the upper calibration plate (2) is provided with a mounting mechanism (3) for facilitating the disassembly and assembly of the upper calibration plate (2); and the bottom of the upper calibration plate (2) is provided with a sealing assembly (4); The mounting mechanism (3) comprises a rectangular frame (301), a slide groove (302), an extension plate (303), a sliding rod (304), a protective shell (305), a sliding frame (306) and a first spring (307); the rectangular frame (301) is bolted to the outer wall of the lower calibration disk (1); the slide groove (302) is opened inside the rectangular frame (301); the extension plate (303) is bolted to the outer wall of the upper calibration disk (2); the sliding rod (304) is slidably connected to the inside of the extension plate (303); the protective shell (305) is bolted to the side wall of the rectangular frame (301); the sliding frame (306) is slidably connected to the inside of the slide groove (302); the first spring (307) is welded to the side wall of the sliding frame (306); and one end of the spring is welded to the inner wall of the protective shell (305).

2. The earth pressure gauge pressure calibration device according to claim 1, characterized in that: The sealing assembly (4) comprises a concave gasket (401) and a sealing gasket (402), wherein the concave gasket (401) is bonded to the top of the lower calibration disk (1), and the sealing gasket (402) is bonded to the bottom of the upper calibration disk (2), and the outer wall of the sealing gasket (402) is tightly fitted with the inner wall of the concave gasket (401).

3. The earth pressure gauge pressure calibration device according to claim 1, characterized in that: A round rod (5) is welded to the side wall of the sliding frame (306), a pull ring (6) is welded to one end of the round rod (5), and one end of the round rod (5) penetrates the protective shell (305) and is slidably connected to the protective shell (305).

4. The earth pressure gauge pressure calibration device according to claim 3, characterized in that: A sealing ring (7) is bonded inside the protective shell (305), and the round rod (5) is slidably connected to the sealing ring (7).

5. The earth pressure gauge pressure calibration device according to claim 1, characterized in that: Two second springs (8) are welded to the bottom of the extension plate (303) to facilitate the timely rebound of the upper calibration plate (2), and the second springs (8) are made of stainless steel.

6. The earth pressure gauge pressure calibration device according to claim 1, characterized in that: A calibration pressure rod (9) is slidably connected inside the upper calibration disk (2), and a calibration pressure plate (10) is provided at the bottom of the calibration pressure rod (9).

7. The earth pressure gauge pressure calibration device according to claim 1, characterized in that: A buffer pad (11) for increasing the service life of the external device is bonded to the interior of the lower calibration plate (1), and the side wall of the buffer pad (11) is tightly fitted to the inner wall of the lower calibration plate (1).

8. The earth pressure gauge pressure calibration device according to claim 1, characterized in that: Four support legs (12) are bolted to the outer wall of the lower calibration plate (1) to improve the stability of the upper calibration plate (2) and the lower calibration plate (1).

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