Geotechnical density detection device

Abstract

The utility model discloses a geotechnical density detection device which comprises a base plate and a base hole in the center of the base plate, the upper portion of the base plate is provided with a positioning frame used for calibrating that a sand filling cylinder and the base hole are coaxial, the positioning frame comprises supporting ruler rods symmetrically supported on the upper portion of the base plate, and a pair of V-shaped frames used for limiting the sand filling cylinder is arranged between the two supporting ruler rods. According to the utility model, the upper part of the base plate is provided with the sand filling cylinders capable of adjusting the spacing according to different diameters, so that the sand filling cylinders and the base holes of the base plate can be coaxial, the inaccuracy of sand filling caused by position deviation of uniform sand in the sand filling cylinders is avoided, and the accuracy of dry density measurement is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of geotechnical density detection, and particularly relates to a geotechnical density detection device. BACKGROUND

[0002] When the geotechnical density is measured by the sand pouring method, the ground surface is first treated to be flat, then the base plate is placed on the ground surface, the chisel is used to dig the test hole along the base hole in the center of the base plate, the soil dug out is saved, the sand pouring cylinder filled with uniform sand is placed at the base hole, the sand pouring cylinder outlet switch is opened, and the uniform sand falls freely from a certain height into the test hole, so that the test hole is filled with sand and the surface is flat, the dry density of the soil sample is calculated by measuring the mass of the poured sand and the volume of the soil.

[0003] However, when the sand pouring cylinder is placed, it is difficult to coaxially place the sand pouring cylinder and the base hole, deviation is prone to occur, the uniform sand in the sand pouring cylinder cannot accurately enter the test hole, the mass of the sand poured into the test hole is inaccurate, and the measurement accuracy of the dry density is affected. UTILITY MODEL CONTENT

[0004] In order to solve the above problems, the utility model provides a geotechnical density detection device.

[0005] The utility model is realized through the following technical schemes:

[0006] A geotechnical density detection device, comprising a base plate and a base hole in the center thereof, a positioning frame for calibrating the coaxiality of the sand pouring cylinder and the base hole is arranged on the upper portion of the base plate, the positioning frame comprises support scale bars supported symmetrically on the upper portion of the base plate, and a pair of V-shaped frames for limiting the sand pouring cylinder is arranged between the two support scale bars.

[0007] Further, the two support scale bars are symmetrically arranged on opposite sides of the base plate, a connecting sleeve is slidably connected to each end of each support scale bar, and a frame-shaped clamping sleeve clamped on the edge of the base plate is fixed to the lower portion of the connecting sleeve.

[0008] Further, a scale line is arranged on the upper portion of the support scale bar, and the scale line increases in value to both sides with the central portion of the support scale bar as a reference.

[0009] Further, a locking screw for fixing the support scale bar is arranged on the upper portion of the sleeve.

[0010] Further, the V-shaped frame comprises two V-shaped connecting rods hingedly connected, and the outer end of the connecting rod is hingedly connected to the sleeve sleeved on the support scale bar.

[0011] Compared with the prior art, the utility model discloses the beneficial effects are: the utility model discloses the spacing of the sand filling barrel of different diameters can be adjusted on the upper portion of the base plate, can guarantee that the sand filling barrel and the base hole of the base plate are in the coaxial position, avoid the inaccuracy of sand filling caused by the position deviation of the even sand in the sand filling barrel, guarantee the accuracy of the measurement of the dry density. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structure three-dimensional schematic diagram of the utility model;

[0013] Figure 2 It is the support ruler rod structure schematic diagram of the utility model;

[0014] In the drawing: base plate 1, base hole 2, support ruler rod 3, frame-shaped clamping sleeve 4, connecting sleeve 5, locking screw 6, V-shaped frame 7, sliding sleeve 8, scale line 9, sand filling barrel 10. DETAILED DESCRIPTION

[0015] The utility model will be further described in detail below in combination with the drawings and specific embodiments:

[0016] As Figure 1 The utility model discloses a soil density detection device, including base plate 1 and the base hole 2 in its center, the upper portion of base plate 1 is provided with the positioning frame for calibrating sand filling barrel 10 and the coaxial base hole 2, and the positioning frame includes the support ruler rod 3 that is supported on the upper portion of base plate 1 symmetrically, a pair of V-shaped frame 7 for limiting sand filling barrel 10 is arranged between two support ruler rods 3, and two V-shaped frames 7 are used to clamp the center position of sand filling barrel 10.

[0017] As Figure 1 Two support ruler rods 3 are symmetrically arranged on the diagonal two sides of base plate 1, and the connecting sleeve 5 is slidably connected to the two ends of each support ruler rod 3, the lower portion of connecting sleeve 5 is fixed with the frame-shaped clamping sleeve 4 clamped on the edge of base plate 1, the frame-shaped clamping sleeve 4 and connecting sleeve 5 are arranged at an inclination of 45 degrees, so that the support ruler rods 3 on both sides are kept in parallel state.

[0018] As Figure 2 The scale line 9 is arranged on the upper portion of support ruler rod 3, and the scale line 9 is increased in value to both sides with the central support ruler rod 3 as the reference, so that the position adjustment of the V-shaped frame and the frame-shaped clamping sleeve 4 is facilitated.

[0019] As Figure 1 The locking screw 6 for fixing support ruler rod 3 is arranged on the upper portion of sliding sleeve 5, the locking screw 6 is fixed to prevent the movement of support ruler rod 3, and the accurate positioning of support ruler rod 3 on base plate 1 is realized.

[0020] As Figure 1As shown, the V-shaped frame 7 comprises two V-shaped articulated connecting rods, the outer ends of which are hingedly connected with the sliding sleeves 8 sleeved on the support ruler 3, so that the V-shaped frame 7 can adapt to the change of the interval of the support ruler 3.

[0021] The implementation principle of the soil density detection device is as follows:

[0022] According to the sand pouring cylinder 10 of different diameter sizes (100mm or 150mm in diameter), the positioning frame can be adjusted, when adjusting, the frame-shaped clamping sleeve 4 at both ends of the support ruler 3 is clamped on the opposite edge of the base plate 1, the locking screw 6 is loosened, the frame-shaped clamping sleeve 4 is moved on the edge of the base plate 1, and at the same time the support ruler 3 is slid in the connecting sleeve 5 at the upper part;

[0023] When the interval between the two support rulers 3 is adjusted to be sufficient to place the sand pouring cylinder 10 corresponding to the diameter, the position of the support ruler 3 is adjusted according to the scale line 9 so that the "0" scale line in the middle is at the midpoint of the frame-shaped clamping sleeve 4 on both sides, all the locking screws 6 are tightened to complete the adjustment of the positioning frame, after the adjustment, the sand pouring cylinder 10 filled with uniform sand is placed above the base hole 2 of the base plate 1, the V-shaped frame 7 on both sides is slid inward at the same time, the V-shaped frame 7 on both sides clamps the sand pouring cylinder 10, according to the scale line 9 where the sliding sleeve 8 of the V-shaped frame 7 is located, the V-shaped frame 7 and the clamped sand pouring cylinder 10 are moved as a whole, and the scale line 9 where the sliding sleeve 8 on both sides is located is ensured to have the same position value, so that the center positioning of the sand pouring cylinder 10 is realized, the inaccuracy of sand pouring caused by the position deviation of the uniform sand in the sand pouring cylinder 10 is avoided, and the accuracy of the dry density measurement is ensured.

[0024] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A geotechnical density detection device comprising a base plate (1) and a base hole (2) in the center thereof, characterized in that: The upper part of the base plate (1) is provided with a positioning frame for calibrating the coaxiality of the sand filling cylinder (10) and the base hole (2), which comprises a pair of support ruler bars (3) symmetrically supported on the upper part of the base plate (1), and a pair of V-shaped frames (7) for limiting the sand filling cylinder (10) is arranged between the two support ruler bars (3).

2. The geotechnical density detection device of claim 1, wherein: The two support ruler bars (3) are symmetrically arranged on the opposite sides of the base plate (1), and the connecting sleeve (5) is slidably connected to the two ends of each support ruler bar (3), and the lower part of the connecting sleeve (5) is fixedly connected with the frame-shaped clamping sleeve (4) clamped on the edge of the base plate (1).

3. A geotechnical density detection device according to claim 2, wherein: The upper part of the support ruler bar (3) is provided with a scale line (9), which is incrementally numbered to both sides with the central part of the support ruler bar (3) as the reference.

4. The geotechnical density detection device of claim 2, wherein: The upper part of the connecting sleeve (5) is provided with a locking screw (6) for fixing the support ruler bar (3).

5. The geotechnical density detection device of claim 1, wherein: The V-shaped frame (7) comprises two V-shaped connecting rods hingedly connected, and the outer ends of the connecting rods are hingedly connected with the sliding sleeve (8) sleeved on the support ruler bar (3).

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