Double-slide-rail switching structure for automatic calibration of multi-parameter static penetrometer

Abstract

The utility model relates to a double-slide-rail switching structure for automatic calibration of a multi-parameter static penetrometer, which comprises a double-slide-rail switching mechanism fixed below a lifting beam, and a plurality of test pressure heads matched with static penetrometers of different models are arranged on the double-slide-rail switching mechanism. Part of the test pressure heads are used for being matched with a conical tip of the static penetrometer, part of the test pressure heads are used for being matched with a friction sleeve of the static penetrometer, and the test pressure heads on the double-sliding-rail switching mechanism can slide on the double-sliding-rail switching mechanism to switch positions. The beneficial effects are that through the structure of the double slide rail switching mechanism and the plurality of test pressure heads, calibration requirements of static penetrometers of different models and different parameters can be realized, switching is rapid and labor-saving, and experiment efficiency is substantially improved.

Description

Technical Field

[0001] The utility model relates to the technical field of calibration of geological survey equipment, in particular to a double-slide rail switching structure for automatic calibration of a multi-parameter static penetration instrument. Background Art

[0002] The static penetration tester is an in-situ testing equipment used in engineering geological surveys. It can test soil without changing the soil structure, moisture content and other properties. Commonly used static penetration testers are divided into single-bridge and double-bridge types according to the measurement parameters. The single-bridge static penetration tester can only measure the cone tip resistance parameter, while the double-bridge static penetration tester can measure two parameters including cone tip resistance and side wall friction, so it has a wider range of uses.

[0003] Because the static penetration tester is used in complex geological environments for a long time, its special cone tip and sleeve structure make it easy to produce deviations during transportation or use. Therefore, the static penetration tester needs to be calibrated regularly. However, the current mainstream static penetration tester calibration device has the disadvantages of complex test pressure head switching (upper and lower screws are required to fix the test pressure head, which is extremely inefficient) and cannot be adapted to the calibration of static penetration testers of multiple models or multiple parameters, resulting in low calibration efficiency and limited calibration capabilities. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a double-slide rail switching structure for automatic calibration of a multi-parameter static penetration instrument, so as to overcome the deficiencies in the above-mentioned prior art.

[0005] The utility model provides a technical solution to the above-mentioned technical problems as follows: a double-slide rail switching structure for automatic calibration of a multi-parameter static penetration instrument, comprising: a double-slide rail switching mechanism fixed under a lifting beam, a plurality of test pressure heads adapted to different types of static penetration instruments are arranged on the double-slide rail switching mechanism, some of the test pressure heads are used to match the cone tip of the static penetration instrument, and some of the test pressure heads are used to match the friction sleeve of the static penetration instrument, and each test pressure head on the double-slide rail switching mechanism can switch its position on the double-slide rail switching mechanism.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the double slide rail switching mechanism includes: two guide rails arranged below the lifting beam and fixed to the lifting beam at both ends, a plurality of movable toolings are provided between the two guide rails in a sliding connection, and a test pressure head that can move upward is arranged in each tooling.

[0008] Furthermore, a centering stabilizing structure is provided between the test pressure head and the lifting beam to make the test pressure head coaxial with the static penetration instrument to be tested.

[0009] Furthermore, the centering stabilizing structure includes: a ball head fixed at the bottom of the lifting beam and a ball socket fixed at the top of the test pressure head, the ball head and the ball socket are matched, and the ball head is coaxial with the static penetration instrument to be tested.

[0010] Furthermore, the tooling includes: two slide blocks, the two slide blocks are respectively slidably matched with the two guide rails, an assembly frame is arranged between the two slide blocks, and a test pressure head that can move upward is arranged in the assembly frame.

[0011] Furthermore, a positioning structure is provided between the slider and the guide rail, and when the slider slides along the guide rail to the position directly above the static penetration instrument to be tested, the positioning structure positions the slider and the guide rail.

[0012] Furthermore, a guide structure for guiding the test pressure head to fall back is provided between the assembly frame and the test pressure head.

[0013] The beneficial effect of the utility model is that when calibrating static penetration instruments of different models, it is only necessary to select and slide to switch to the corresponding test pressure head on the double-slide switching mechanism to match the static penetration instrument of that model, without the need to disassemble and reassemble the upper and lower screws, and the switching process is simple, thereby effectively improving work efficiency. In addition, the double-slide switching mechanism has both a test pressure head that matches the cone tip of the static penetration instrument and a test pressure head that matches the friction sleeve of the static penetration instrument. Therefore, two parameters including the cone tip resistance and the side wall friction can be calibrated, and rapid switching between the test pressure heads measuring each parameter can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The structure of the double slide rail switching structure used for automatic calibration of the multi-parameter static penetration instrument in the utility model Figure 1 ;

[0015] Figure 2 The structure of the double slide rail switching structure used for automatic calibration of the multi-parameter static penetration instrument in the utility model Figure 2 ;

[0016] Figure 3 It is a cross-sectional view of a double-slide rail switching structure for automatic calibration of a multi-parameter static penetration instrument in the utility model;

[0017] Figure 4 This is an application diagram of the double slide rail switching structure used for automatic calibration of a multi-parameter static penetration instrument in the utility model.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Double slide rail switching mechanism, 110. Guide rail, 120. Tooling, 121. Slider, 122. Assembly frame, 130. Centering stabilizing structure, 131. Ball head, 132. Ball socket, 140. Positioning structure, 150. Guide structure, 2. Test pressure head, 3. Lifting beam, 4. Static penetration instrument. DETAILED DESCRIPTION

[0020] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0021] Example 1

[0022] like Figure 1 , Figure 2 , Figure 4 As shown, a double-slide switching structure for automatic calibration of a multi-parameter static penetration tester includes: a double-slide switching mechanism 1 fixed under a lifting beam 3, and a plurality of test pressure heads 2 adapted to different types of static penetration testers are arranged on the double-slide switching mechanism 1. Since two parameters are usually measured when calibrating the static penetration tester 4, namely: the cone tip resistance of the static penetration tester 4 and the side wall friction of the static penetration tester 4, some of the test pressure heads 2 among all the test pressure heads 2 are used to match the cone tip of the static penetration tester 4. At this time, this type of test pressure head 2 can be used to measure the static penetration tester The cone tip resistance of the probe 4 is achieved, and the remaining part of the test ram 2 is used to match the friction sleeve of the static penetration tester 4. At this time, this type of test ram 2 can be used to measure the friction force of the side wall of the static penetration tester 4. Each test ram 2 on the double-rail switching mechanism 1 can be slid and switched on the double-rail switching mechanism 1. When calibrating static penetration testers 4 of different models, it is only necessary to select and slide to the corresponding test ram 2 on the double-rail switching mechanism 1 to match the static penetration tester of that model. There is no need to disassemble and reassemble the upper and lower screws. The switching process is simple, which effectively improves work efficiency.

[0023] Example 2

[0024] like Figure 1 , Figure 2 As shown, this embodiment is a further improvement on the basis of embodiment 1, and the details are as follows:

[0025] The double-slide rail switching mechanism 1 includes: two guide rails 110, the two guide rails 110 are arranged below the lifting beam 3, the two ends of the two guide rails 110 are respectively fixed to the lifting beam 3, the two guide rails 110 are arranged in parallel, and a plurality of movable fixtures 120 are provided between the two guide rails 110 in a sliding connection manner, that is, the fixtures 120 can slide back and forth on the guide rails 110, and each fixture 120 is provided with a test pressure head 2 that can move upward, that is, the test pressure head 2 in each fixture 120 is not fixed; the lifting beam 3 will drive the lifting beam 3 to move downward during the downward movement. The double-slide switching mechanism 1 moves downward synchronously and allows the head of the static probe 4 to enter the test pressure head 2. When the lifting beam 3 continues to move downward, the static probe 4 lifts the test pressure head 2 from the tooling 120 and rests it on the bottom of the lifting beam 3 to form experimental conditions. When the calibration experiment is completed, the lifting beam 3 moves upward, and the test pressure head 2 falls back into the tooling 120 by gravity. When switching the test pressure head 2, it is sufficient to move the tooling 120 with the corresponding test pressure head 2 on the guide rail 110. During the entire process, there is no need to replace the test pressure head 2 by means of upper and lower screws.

[0026] Example 3

[0027] like Figure 1 , Figure 2 As shown, this embodiment is a further improvement on the basis of embodiment 2, and the details are as follows:

[0028] There is a centering stabilizing structure 130 between the test ram 2 and the lifting beam 3 to make the test ram 2 coaxial with the static penetration instrument 4 to be tested. Since the test ram 2 will be lifted up during the experiment and will fall back into the tooling 120 after the test, it is difficult to ensure that it can be aligned during each test. Therefore, the test ram 2 is centered by the centering stabilizing structure 130 so that the test ram 2 can be coaxial with the static penetration instrument 4 to be tested during each test, ensuring that the experiment can be carried out accurately.

[0029] Example 4

[0030] like Figure 1 , Figure 2 As shown, this embodiment is a further improvement on the basis of embodiment 3, and the details are as follows:

[0031] The centering stabilizing structure 130 includes: a ball head 131 and a ball socket 132, wherein the ball head 131 is fixed at the bottom of the lifting beam 3, and the ball socket 132 is fixed at the top of the test pressure head 2, the ball head 131 is adapted to the ball socket 132, and the ball head 131 is coaxial with the static penetration probe 4 to be tested. During the upward movement of the test pressure head 2, automatic centering is achieved through the cooperation of the ball head 131 and the ball socket 132, and the ball head 131 and the ball socket 132 form hard contact, so that the force value can be loaded onto the static penetration probe 4 later.

[0032] In the specific implementation process, other centering methods are not excluded, such as fixing a plurality of positioning columns with tapered lower ends at the bottom of the lifting beam 3 , and correspondingly opening a plurality of positioning holes on the test pressure head 2 .

[0033] Example 5

[0034] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment is a further improvement on the basis of Embodiment 3 or 4, and the details are as follows:

[0035] The tooling 120 includes: two sliders 121, and the two sliders 121 are respectively slidably matched with the two guide rails 110. The matching between the sliders 121 and the guide rails 110 is the existing technology, so it is not described in detail here. An assembly frame 122 is provided between the two sliders 121, and a movable test pressure head 2 is arranged in the assembly frame 122. The test pressure head 2 is placed in the assembly frame 122, so the test pressure head 2 can move upward later.

[0036] Furthermore: a positioning structure 140 is provided between the slider 121 and the guide rail 110. When the slider 121 slides along the guide rail 110 to be directly above the static penetration probe 4 to be tested, the positioning structure 140 positions the slider 121 and the guide rail 110 to prevent the slider 121 from accidentally sliding after running to the specified position, thereby affecting subsequent experiments. In addition, the positioning structure 140 can also allow the operator to quickly know that the slider 121 has slid to the specified position on the guide rail 110.

[0037] The positioning structure 140 can be: an elastic positioning pin or elastic ball embedded in the surface of the guide rail 110, and a positioning groove opened on the inner wall of the slider 121. When the slider 121 slides to the specified position on the guide rail 110, the elastic positioning pin or elastic ball on the guide rail 110 will enter the positioning groove to achieve positioning.

[0038] like Figure 3 As shown, a guide structure 150 is provided between the assembly frame 122 and the test pressure head 2 to guide the test pressure head 2 to fall back. When the test pressure head 2 falls back after the test, the guide structure 150 guides the test pressure head 2 to fall back, so as to ensure that it is accurately reset to facilitate the next test;

[0039] The guide structure 150 may be a sleeve installed below the assembly frame 122 and covering the head of the test pressure head 2. During the test, the head of the test pressure head 2 does not separate from the sleeve;

[0040] Of course, the guide structure 150 may also be a sleeve covering the tail of the test pressure head 2, and during the test process, the tail of the test pressure head 2 does not separate from the sleeve;

[0041] Or it may be other structures, for example, a guide sleeve or guide column is assembled between the assembly frame 122 and the test pressure head 2 .

[0042] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A double slide rail switching structure for automatic calibration of a multi-parameter static penetration instrument, characterized in that: include: A double-slide switching mechanism (1) is fixed below a lifting beam (3), and a plurality of test pressure heads (2) adapted to different types of static penetration instruments are arranged on the double-slide switching mechanism (1). Among all the test pressure heads (2), some of the test pressure heads (2) are used to match the cone tip of the static penetration instrument (4), and some of the test pressure heads (2) are used to match the friction sleeve of the static penetration instrument (4). Each test pressure head (2) on the double-slide switching mechanism (1) can slide and switch positions on the double-slide switching mechanism (1).

2. According to claim 1, a dual-slide rail switching structure for automatic calibration of a multi-parameter static penetration tester is characterized in that: The double-slide rail switching mechanism (1) comprises: two guide rails (110) arranged below a lifting beam (3) and having two ends respectively fixed to the lifting beam (3); a plurality of movable fixtures (120) are provided between the two guide rails (110) in a sliding connection manner; and a test pressure head (2) that can move upward is arranged in each fixture (120).

3. According to claim 2, a double slide rail switching structure for automatic calibration of a multi-parameter static penetration tester is characterized in that: A centering stabilizing structure (130) is provided between the test pressure head (2) and the lifting beam (3) to allow the test pressure head (2) to be coaxial with the static penetration instrument (4) to be tested.

4. According to claim 3, a double slide rail switching structure for automatic calibration of a multi-parameter static penetration instrument is characterized in that: The centering stabilizing structure (130) comprises: a ball head (131) fixed at the bottom of the lifting beam (3) and a ball socket (132) fixed at the top of the test pressure head (2); the ball head (131) is matched with the ball socket (132); and the ball head (131) is coaxial with the static penetration instrument (4) to be tested.

5. According to claim 4, a double slide rail switching structure for automatic calibration of a multi-parameter static penetration tester is characterized in that: The tooling (120) comprises: two slide blocks (121), the two slide blocks (121) are respectively slidably matched with two guide rails (110), an assembly frame (122) is provided between the two slide blocks (121), and a test pressure head (2) that can move upward is arranged in the assembly frame (122).

6. A double slide rail switching structure for automatic calibration of a multi-parameter static penetration tester according to claim 5, characterized in that: A positioning structure (140) is provided between the slider (121) and the guide rail (110); when the slider (121) slides along the guide rail (110) to a position directly above the static penetration tester to be tested, the positioning structure (140) positions the slider (121) and the guide rail (110).

7. A double slide rail switching structure for automatic calibration of a multi-parameter static penetration tester according to claim 5, characterized in that: A guide structure (150) for guiding the test pressure head (2) to fall back is provided between the assembly frame (122) and the test pressure head (2).

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