CN112798503B

CN112798503B - Permeameter

Info

Publication number: CN112798503B
Application number: CN202110418662.0A
Authority: CN
Inventors: 张闯; 李建中
Original assignee: Central South University
Current assignee: Central South University
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-07-27
Anticipated expiration: 2041-04-19
Also published as: CN112798503A

Abstract

The invention discloses a permeameter, comprising: the back side of the upper end surface of the workbench is provided with a back plate; the sliding block is arranged on the front surface of the back plate in a sliding mode along the vertical direction; the fixed clamping assembly is rotatably arranged on the sliding block; the permeameter body has a vertical state and a horizontal state, and can realize switching between the vertical state and the horizontal state; the vertical supporting piece is used for supporting and limiting the permeameter body in a vertical state; the horizontal supporting piece is used for supporting and limiting the permeameter body in a horizontal state. The invention realizes compound movement by sliding the sliding block and rotating the fixed clamping assembly, can drive the permeameter body to realize switching between a vertical state and a horizontal state, and meets two conditions of permeability test.

Description

Permeameter

Technical Field

The invention relates to permeability testing equipment, in particular to a permeameter.

Background

Permeability is an important property of porous materials such as concrete, earthen materials or soil. The applicability of the material is determined by testing the permeability of the material, so that the material meets the use requirement.

The penetration comprises the penetration in the horizontal penetration direction and the penetration in the vertical direction, and usually, the penetration performance test in two directions is difficult to realize by one penetration test instrument, so that the applicability is not strong, and the penetration performance test in two directions can be realized by using two sets of instruments, so that the cost is high, and the operation is troublesome.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a permeameter which can meet the permeability test in two directions.

A permeameter according to an embodiment of the invention includes: the back side of the upper end surface of the workbench is provided with a back plate; the sliding block is arranged on the front surface of the back plate in a sliding mode along the vertical direction; the fixed clamping assembly is used for clamping and fixing the permeameter body, and is rotatably arranged on the sliding block; the permeameter body has a vertical state and a horizontal state, and can realize switching between the vertical state and the horizontal state along with rotation of the fixed clamping assembly and sliding of the sliding block; the vertical supporting piece is fixedly arranged on the upper end surface of the workbench and used for supporting and limiting the permeameter body in a vertical state; and the horizontal supporting piece is fixedly arranged on the upper end surface of the workbench and used for supporting and limiting the permeameter body in a horizontal state.

The permeameter provided by the embodiment of the invention at least has the following technical effects: through the slip of slider and the rotation of fixed centre gripping subassembly, realize compound motion, can drive the switching that the permeameter body realized vertical state and horizontality, satisfy two kinds of penetration test's condition, it is spacing to recycle vertical support piece and horizontal support piece and support the vertical state and the horizontality of permeameter body respectively, guarantees in its testing process, can obtain effective support and spacing, ensures that the test is accurate to be accomplished.

According to some embodiments of the invention, the slider has a U-shaped opening with an upper opening, and a circular contour groove is arranged on the back of the U-shaped opening, and the diameter of the circular contour groove is larger than the width of the U-shaped opening; the fixed clamping assembly comprises a rotating part matched with the circular contour groove, and the rotating part is embedded in the circular contour groove and can rotate relatively along the axis of the rotating part.

According to some embodiments of the invention, the two ends of the rotating part in the axial direction are respectively attached to the inner wall of the circular contour groove and the back plate.

According to some embodiments of the invention, the fixed clamp assembly further comprises a connecting shaft, a connecting rod; one end of the connecting shaft is connected with the rotating part, and the other end of the connecting shaft is connected with the connecting rod; two ends of the connecting rod are respectively provided with a group of clamp rings, the two clamp rings in the same group are oppositely arranged, and at least one clamp ring is hinged with the connecting rod; one end of each clamp ring far away from the connecting rod is provided with a connecting part, and the connecting parts of the two clamp rings in the same group are connected through a fastener to clamp and fix the permeameter body between the two clamp rings.

According to some embodiments of the invention, the back plate is provided with a sliding strip extending in a vertical direction, the sliding strip is provided with a sliding groove extending in the vertical direction, the sliding block is matched with the sliding groove, and the sliding block is embedded in the sliding groove and can slide vertically along the sliding groove.

According to some embodiments of the invention, the slider and the runner are T-shaped in cross-section.

According to some embodiments of the invention, the vertical support comprises a collar and a support inside the collar for supporting the permeameter body in a vertical position.

According to some embodiments of the invention, the support portion has a plurality of circumferentially arranged indentations.

According to some embodiments of the invention, the horizontal support member includes two arc plates arranged at intervals, and the two arc plates are respectively located at two sides of the vertical support member and are used for supporting the permeameter body in a horizontal state.

According to some embodiments of the invention, the horizontal support is higher in height than the vertical support.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a permeameter according to an embodiment of the present invention in a vertical state;

FIG. 2 is a schematic view of the exploded state of FIG. 1;

FIG. 3 is a schematic structural view of the permeameter body in a horizontal state;

FIG. 4 is a schematic view of a slider configuration;

FIG. 5 is an enlarged view at A of FIG. 2;

fig. 6 is a schematic structural view of the fixed clamp assembly.

Reference numerals:

a workbench 100, a back plate 110, a slide bar 120 and a chute 130;

a sliding block 200, a U-shaped opening 210, a semicircular arc wall 211 and a circular outline groove 220;

the fixing clamping assembly 300, the rotating part 310, the connecting rod 320, the clamp ring 330, the connecting part 331 and the connecting shaft 340;

a permeameter body 400, a water pipe 410 and a circular cutting groove 420;

the vertical support 500, the retaining ring 510, the support part 520, the gap 521 and the second support column 530;

horizontal support 600, circular arc board 610, first support column 620.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, a permeameter according to an embodiment of the present invention includes a work table 100, a slider 200, a stationary clamp assembly 300, a permeameter body 400, a vertical support 500, and a horizontal support 600.

A back plate 110 is disposed on the back side of the upper end surface of the worktable 100 and extends upward to be perpendicular to the upper end surface of the worktable 100. The slider 200 is slidably mounted on the front surface of the back plate 110 in a vertical direction; the fixed clamping assembly 300 is used for clamping and fixing the permeameter body 400, and the fixed clamping assembly 300 is rotatably arranged on the sliding block 200 and can ascend and descend along with the sliding block 200; the permeameter body 400 has a vertical state and a horizontal state, and the permeameter body 400 can realize switching between the vertical state and the horizontal state along with the rotation of the fixed clamping assembly 300 and the sliding of the sliding block 200; the sliding of the sliding block 200 itself and the rotation of the fixed clamping assembly 300 are utilized to realize the compound movement, so as to realize the switching of the two states. It is conceivable that the permeameter body 400 is formed in a cylindrical shape as a whole, and water passing pipes 410 are provided at both ends, one of the water passing pipes 410 is used for water inlet and the other is used for water discharge, and the water passing pipe 410 can be filled with water of different water pressures to test the permeability under different water pressure conditions. The vertical support 500 is fixedly installed on the upper end surface of the workbench 100 and is used for supporting and limiting the permeameter body 400 in a vertical state; the horizontal support 600 is fixedly installed on the upper end surface of the worktable 100 and is used for supporting and limiting the permeameter body 400 in a horizontal state. The vertical support piece 500 and the horizontal support piece 600 are used for supporting and limiting the vertical state and the horizontal state of the permeameter body 400 respectively, so that effective supporting and limiting can be achieved in the testing process, and accurate completion of testing is guaranteed.

Referring to fig. 4, in some embodiments of the present invention, the slider 200 has a U-shaped opening 210 with an upper opening, the U-shaped opening 210 penetrates the slider 200 in a front-rear direction, a circular contour groove 220 is formed at the back of the U-shaped opening 210, and the diameter of the circular contour groove 220 is greater than the width of the U-shaped opening 210; the fixed clamping assembly 300 comprises a rotating part 310 matched with the circular contour groove 220, the rotating part 310 is embedded into the circular contour groove 220 and can relatively rotate along the axis of the rotating part 310, the diameter of the rotating part 310 is matched with the circular contour groove 220, the diameter of the circular contour groove 220 is larger than the width of the U-shaped opening 210, so that the rotating part 310 cannot be separated from the front side of the U-shaped opening 210, and after the rotating part 310 is separated from the circular contour groove 220, the fixed clamping assembly 300 can be separated from the upper end opening of the U-shaped opening 210, and the installation and the disassembly are convenient.

In some embodiments of the present invention, two axial ends of the rotating portion 310 are respectively attached to the inner wall of the circular contour groove 220 and the back plate 110, specifically, the rotating portion 310 is attached to the front surface of the back plate 110, the rotating portion 310 is limited by the inner wall of the circular contour groove 220 and the back plate 110 from moving axially, the axial direction of the rotating portion 310 is positioned, so that it does not generate axial displacement, only when the slider 200 is separated from the back plate 110, the rotating portion 310 and the fixed clamping component 300 can be detached from the slider 200, thereby improving stability and convenience of detachment, and the structure is ingenious and simple, the cost is low, and the processing is convenient.

Referring to fig. 6, in some embodiments of the present invention, the fixed clamp assembly 300 further comprises a connecting shaft 340, a connecting rod 320; one end of the connecting shaft 340 is connected with the rotating part 310, the other end is connected with the connecting rod 320, the connecting shaft 340 and the rotating part 310 are both cylindrical, the diameter of the rotating part 310 is larger than that of the connecting shaft 340, the connecting shaft 340 and the rotating part 310 are coaxial, and the axes are arranged along the front-back horizontal direction; in addition, U type mouth 210 bottom has a semicircle arc wall 211, and connecting axle 340 matches and laminates with semicircle arc wall 211 for connecting axle 340 can obtain the support, and connecting axle 340 and the cooperation of semicircle arc wall 211 also play certain radial spacing and guide effect, have still improved support stability, optimize the stress distribution of fixed centre gripping subassembly 300. Two ends of the connecting rod 320 are respectively provided with a group of clamp rings 330, the two clamp rings 330 in the same group are oppositely arranged, and at least one clamp ring 330 is hinged to the connecting rod 320. The end of the clamp rings 330 away from the connecting rod 320 is provided with a connecting part 331, and the connecting parts 331 of two clamp rings 330 in the same group are connected by a fastener to clamp and fix the permeameter body 400 between the two clamp rings 330. Specifically, the clamp ring 330 is integrally in the shape of an arc strip, the connecting portion 331 extends radially outward from the end of the clamp ring 330, the connecting portion 331 is provided with a waist-shaped hole, and a bolt can pass through the waist-shaped holes of the two connecting portions 331 and cooperate with a nut to push the two clamp rings 330 to approach and clamp and fix the permeameter body 400.

Referring to fig. 3, in some embodiments of the present invention, the back plate 110 is provided with a slide bar 120 extending in a vertical direction, the slide bar 120 is provided with a slide groove 130 extending in the vertical direction, and a back side of the slide groove 130 is formed by a front surface of the back plate 110. The slider 200 is matched with the sliding groove 130, the slider 200 is embedded into the sliding groove 130 and can vertically slide along the sliding groove 130, sliding guide is realized through the matching of the slider 200 and the sliding groove 130, and the sliding stability is improved.

In some embodiments of the present invention, the cross-section of the sliding block 200 and the sliding groove 130 is T-shaped, the sliding groove 130 is open at the front side, and the width of the open side is smaller than the width of the rear half. Make slider 200 be injectd in spout 130, play spacing effect, avoid slider 200 to break away from spout 130 from the spout 130 front side.

Referring to fig. 5, in some embodiments of the present invention, the vertical support 500 includes a retainer ring 510 and a support part 520 located inside the retainer ring 510, the support part 520 is connected to the bottom of the retainer ring 510, the support part 520 is used for supporting the permeameter body 400 in the vertical state, and the retainer ring 510 can play a certain role in limiting and positioning the permeameter body 400. The support part 520 has a recess at the center so that the water pipe 410 at the bottom is leaked. The supporting portion 520 is fixed to the upper end surface of the table 100 by a second supporting column 530.

Referring to fig. 5, in some embodiments of the present invention, the supporting portion 520 has a plurality of notches 521 arranged in a surrounding manner, and the two ends of the permeameter body 400 are generally connected with the cover plates through the bolt sets, which are generally arranged in a surrounding manner, and the notches 521 correspond to the bolt sets, so as to avoid structural interference.

In some embodiments of the present invention, the horizontal support 600 includes two circular arc plates 610 disposed at intervals, and the circular arc plates 610 are fixed on the upper end surface of the workbench 100 by a first support column 620 at the bottom for supporting the permeameter body 400 in a horizontal state. The two circular arc plates 610 are respectively located at both sides of the vertical support 500. In addition, as shown in fig. 2, the outer peripheral wall of the permeameter body 400 is provided with an annular cutting groove 420, and the annular cutting groove 420 is used for embedding the clamp ring 330 for positioning. More preferably, the partial embedding ring grooving 420 of clamp ring 330 and protrusion infiltration appearance body 400 periphery wall, the permeameter body 400 of horizontality is placed on arc board 610, two sets of clamp ring 330 are located between two arc boards 610, and the side of clamp ring 330 bulge pastes with arc board 610 side mutually, play the locate effect, when permeameter body 400 receives the axial force, arc board 610 can provide certain resistance, avoid the atress to concentrate on the hookup location of fixed centre gripping subassembly 300 with slider 200, indirectly improved structural strength.

In some embodiments of the present invention, to avoid structural interference, the horizontal support 600 is higher than the vertical support 500 such that the permeameter body 400 in a horizontal state is placed without contacting the vertical support 500.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A permeameter, comprising:

the back side of the upper end face of the workbench (100) is provided with a back plate (110);

a slider (200) slidably mounted on the front surface of the back plate (110) in the vertical direction;

the fixed clamping assembly (300) is used for clamping and fixing the permeameter body (400), and the fixed clamping assembly (300) is rotatably arranged on the sliding block (200); the permeameter body (400) has a vertical state and a horizontal state, and the permeameter body (400) can realize switching between the vertical state and the horizontal state along with rotation of the fixed clamping assembly (300) and sliding of the sliding block (200);

the vertical supporting piece (500) is fixedly arranged on the upper end face of the workbench (100) and is used for supporting and limiting the permeameter body (400) in a vertical state;

the horizontal supporting piece (600) is fixedly arranged on the upper end face of the workbench (100) and is used for supporting and limiting the permeameter body (400) in a horizontal state;

the sliding block (200) is provided with a U-shaped opening (210) with an opening at the upper part, a circular contour groove (220) is formed in the back of the U-shaped opening (210), and the diameter of the circular contour groove (220) is larger than the width of the U-shaped opening (210); the fixed clamping component (300) comprises a rotating part (310) matched with the circular contour groove (220), and the rotating part (310) is embedded in the circular contour groove (220) and can rotate relatively along the axis of the rotating part;

the two ends of the rotating part (310) in the axial direction are respectively attached to the inner wall of the circular contour groove (220) and the back plate (110).

2. The permeameter of claim 1, wherein: the fixed clamping assembly (300) further comprises a connecting shaft (340) and a connecting rod (320); one end of the connecting shaft (340) is connected with the rotating part (310), and the other end of the connecting shaft is connected with the connecting rod (320);

two ends of the connecting rod (320) are respectively provided with a group of clamp rings (330), the two clamp rings (330) in the same group are oppositely arranged, and at least one clamp ring (330) is hinged with the connecting rod (320); one end of each clamp ring (330) far away from the connecting rod (320) is provided with a connecting part (331), and the connecting parts (331) of the two clamp rings (330) in the same group are connected through fasteners to clamp and fix the permeameter body (400) between the two clamp rings (330).

3. The permeameter of claim 1, wherein: the back plate (110) is provided with a sliding strip (120) extending along the vertical direction, the sliding strip (120) is provided with a sliding groove (130) extending along the vertical direction, the sliding block (200) is matched with the sliding groove (130), and the sliding block (200) is embedded into the sliding groove (130) and can vertically slide along the sliding groove (130).

4. The permeameter of claim 3, wherein: the cross sections of the sliding block (200) and the sliding groove (130) are T-shaped.

5. The permeameter of claim 1, wherein: the vertical support (500) comprises a retainer ring (510) and a support part (520) positioned inside the retainer ring (510), wherein the support part (520) is used for supporting the permeameter body (400) in a vertical state.

6. The permeameter of claim 5, wherein: the supporting part (520) is provided with a plurality of notches (521) which are arranged in a surrounding way.

7. The permeameter of claim 1, wherein: the horizontal supporting piece (600) comprises two arc plates (610) which are arranged at intervals, and the two arc plates (610) are respectively positioned on two sides of the vertical supporting piece (500) and used for supporting the permeameter body (400) in a horizontal state.

8. The permeameter of claim 7, wherein: the horizontal support (600) is higher than the vertical support (500).