Pipeline backfill sand compaction degree detection equipment

Abstract

The utility model discloses pipeline backfill sand compactness detection equipment which comprises a top plate, supporting legs are fixedly connected to the periphery of the top plate, the supporting legs can stretch out and draw back, a test steel needle is installed in the center of the top plate, and the test steel needle can fall off from the top plate. According to the invention, the support legs are arranged in a telescopic form, and when a non-horizontal plane is detected, individual support legs are extended, so that the top plate is in a horizontal state, and then the test steel needles arranged on the top plate are in a vertical state to meet detection conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to building backfill site compaction degree detection technical field, specifically a pipeline backfill sand compaction degree detection equipment. BACKGROUND

[0002] At present, in the new construction, expansion and updating engineering of urban drainage pipeline, rigid pipeline is used in pipe jacking technology with larger pipe diameter, and more than 90% of other flexible pipelines are used, and the trench backfill material of the flexible pipeline basically uses medium and coarse sand backfill.

[0003] In the current national standard "Water Supply and Drainage Pipeline Engineering Construction and Acceptance Specification" GB50268-2008, the detection method of compaction degree of trench backfill material of flexible pipeline is often ring knife detection method. Considering the problem of ring knife detection, the compaction degree of trench backfill yellow sand is basically detected by steel drill penetration method at present. The advantages of steel drill penetration method are: first, convenient operation; second, flexible detection time; third, short detection time; fourth, low detection cost; fifth, shortening construction period; and sixth, reducing surrounding traffic safety and environmental impact.

[0004] A pipeline backfill sand compaction degree measuring equipment is disclosed in Chinese patent publication No. CN221765227U, which comprises a support frame, an auxiliary support, a positioning guide pipe, a vertical detector and a locking assembly. The auxiliary support is installed at the bottom of the support frame, the positioning guide pipe is fixedly installed in the mounting hole on the support top plate, the vertical detector is fixedly installed on the positioning guide pipe, and the locking assembly is installed on the support top plate and used for locking the detection steel bar placed in the positioning guide pipe. The locking assembly comprises a locking pin and a spring. In the detection, the locking pin in the locking assembly can be released, the detection steel bar falls freely from the vertically corrected positioning guide pipe, penetrates vertically into the measured area, and the depth of penetration is recorded by reading the scale on the steel bar after the steel bar is stable. The problem of poor uniformity of the detection steel bar at present is solved, and the free falling height and verticality of the steel bar cannot be accurately controlled, causing large detection data error.

[0005] The height of the support in the above-mentioned application is fixed, and the detection steel bar will be in a non-vertical state when detecting a non-horizontal surface, which cannot be detected. UTILITY MODEL CONTENT

[0006] The utility model provides a pipeline backfill sand compaction degree detection equipment to solve the problems in the background art.

[0007] To achieve the above purpose, the utility model is implemented by the following technical solutions:

[0008] A pipeline backfill sand compaction degree detection equipment, including the top plate, the top plate is fixedly connected with the supporting leg around, the supporting leg can be telescopic, the test steel needle is installed in the center of the top plate, the test steel needle can be dropped from the top plate.

[0009] Preferably, the test steel needle penetrates the top plate, the top plate is fixedly connected with the clamping jaw, and the clamping jaw clamps the test steel needle.

[0010] Preferably, the supporting leg comprises a sleeve, the sleeve is fixedly connected to the top plate, a limiting support is arranged on the sleeve, the limiting support is rotatably connected with a limiting roller at an end away from the supporting leg, and the limiting roller is attached to the test steel needle.

[0011] Preferably, a screw rod is inserted into the sleeve, a plurality of fastening pressing pieces are arranged at the lower end of the sleeve, an internal thread is arranged on the inner side of the fastening pressing piece, and the internal thread is threadedly connected with the screw rod.

[0012] Preferably, the fastening pressing piece is conical.

[0013] Preferably, a fastening thread is arranged at the end of the sleeve close to the fastening pressing piece, a fastening sleeve is threadedly connected on the fastening thread, and the fastening sleeve inwardly extrudes the fastening pressing piece.

[0014] Preferably, a supporting leg is connected to the lower end of the supporting leg.

[0015] Preferably, the supporting leg comprises a mounting seat, the mounting seat is fixedly connected to the lower end of the supporting leg, two groups of first connecting ears are arranged on the lower surface of the mounting seat, and upper rotating ears on the connecting piece are rotatably connected to the first connecting ears;

[0016] A supporting plate is arranged below the connecting piece, two groups of second connecting ears are arranged on the upper surface of the supporting plate, and lower rotating ears on the connecting piece are rotatably connected to the second connecting ears.

[0017] Preferably, the two groups of first connecting ears are symmetrically arranged.

[0018] The two groups of second connecting ears are symmetrically arranged.

[0019] Preferably, the included angle between the projections of the first connecting ear and the second connecting ear on the horizontal plane is 90 degrees.

[0020] Compared with the prior art, the utility model at least has the following beneficial effects:

[0021] In the application, the supporting leg is arranged in a telescopic form, when detecting a non-horizontal plane, the individual supporting leg is elongated, so that the top plate is in a horizontal state, and then the test steel needle arranged on the top plate is in a vertical state, so that the detection condition is met. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the main body structure left view schematic diagram of the utility model;

[0023] Figure 2 It is the support leg structure schematic diagram of the utility model;

[0024] Figure 3 It is the support leg local section view schematic diagram of the utility model;

[0025] Figure 4 It is the sleeve lower end structure schematic diagram of the utility model;

[0026] Figure 5 It is the support leg structure schematic diagram of the utility model.

[0027] In the drawing: 1, top plate; 2, support leg; 3, test steel needle; 4, limiting support; 5, limiting roller; 6, support leg; 21, sleeve; 22, screw rod; 23, fastening sleeve; 24, fastening thread; 25, fastening pressing sheet; 26, internal thread; 61, mounting seat; 62, first connecting lug; 63, connecting piece; 64, second connecting lug; 65, support plate; 66, upper rotating lug; 67, lower rotating lug. DETAILED DESCRIPTION

[0028] In the utility model, the description such as " first " and " second " is only for the purpose of description, and is not the meaning of special order or sequence, and is not used to limit the utility model, it is only for distinguishing the protection assembly or operation described with the same technical language, and can not be understood as indicating or suggesting its relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by " first " and " second " can explicitly or implicitly include at least one feature. In addition, the technical solutions and technical features of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0029] Embodiment 1

[0030] Please refer to Figure 1 A pipeline backfill sand compaction degree detection equipment, including top plate 1, the top plate 1 around fixedly connected with support leg 2, the support leg 2 can be telescopic, the top plate 1 center is installed with test steel needle 3, the test steel needle 3 can be dropped from top plate 1.

[0031] The test steel needle 3 penetrates the top plate 1, the top plate 1 is fixedly connected with the clamping jaw, and the clamping jaw clamps the test steel needle 3.

[0032] The working principle and beneficial effects of the above scheme:

[0033] The present application sets the support leg 2 in a telescopic form, when detecting a non-horizontal surface, one of the support legs 2 is elongated, so that the top plate 1 is in a horizontal state, and the test steel needle 3 arranged on the top plate 1 is in a vertical state, which meets the detection condition.

[0034] Embodiment 2

[0035] Please refer to Figures 1-4 On the basis of embodiment 1, the support leg 2 comprises a sleeve 21 fixedly connected to the top plate 1, a limiting support 4 is arranged on the sleeve 21, the limiting support 4 is rotatably connected to a limiting roller 5 away from one end of the support leg 2, and the limiting roller 5 is attached to the test steel needle 3.

[0036] A screw rod 22 is inserted into the sleeve 21, a plurality of fastening pressing pieces 25 are arranged at the lower end of the sleeve 21, an internal thread 26 is arranged on the inner side of the fastening pressing piece 25, and the internal thread 26 is threadedly connected with the screw rod 22.

[0037] The fastening pressing piece 25 is conical.

[0038] The sleeve 21 is provided with a fastening thread 24 at one end close to the fastening pressing piece 25, a fastening sleeve 23 is threadedly connected on the fastening thread 24, and the fastening sleeve 23 inwardly extrudes the fastening pressing piece 25.

[0039] The working principle and beneficial effects of the above scheme are as follows:

[0040] When detecting a horizontal surface, the support leg 2 is elongated, the fastening sleeve 23 is unscrewed, the screw rod 22 is rotated to be screwed out of the sleeve 21, and after being rotated to a suitable height, the fastening sleeve 23 is tightened, the fastening sleeve 23 extrudes the fastening pressing piece 25 during the fastening process, the pressure of the fastening pressing piece 25 on the screw rod 22 is increased, and the friction between the screw rod 22 and the internal thread 26 is increased, so that the possibility of rotation of the internal screw rod 22 is reduced, the influence on the horizontal state of the top plate 1 is reduced, and the stability of the detection state is ensured.

[0041] The limiting support 4 and the limiting roller 5 arranged on the sleeve 21 can effectively ensure that the test steel needle 3 is in a vertical state when falling.

[0042] Embodiment 3

[0043] Please refer to Figure 5 On the basis of embodiments 1-2, the support leg 2 is connected with a support foot 6 at the lower end.

[0044] The foot 6 comprises a mounting base 61 fixedly connected to the lower end of the supporting leg 2, and two groups of first connecting ears 62 are arranged on the lower surface of the mounting base 61, and upper rotating ears 66 on a connecting piece 63 are rotatably connected to the first connecting ears 62;

[0045] A supporting plate 65 is arranged below the connecting piece 63, and two groups of second connecting ears 64 are arranged on the upper surface of the supporting plate 65, and lower rotating ears 67 on the connecting piece 63 are rotatably connected to the second connecting ears 64.

[0046] The two groups of first connecting ears 62 are symmetrically arranged;

[0047] The two groups of second connecting ears 64 are symmetrically arranged.

[0048] The included angle between the projections of the first connecting ears 62 and the second connecting ears 64 on the horizontal plane is 90 degrees.

[0049] The working principle and beneficial effects of the above scheme are as follows:

[0050] When detecting a non-horizontal plane, the deflection between the connecting piece 63 and the mounting base 61 and the supporting plate 65 can ensure that the supporting plate 65 always contacts the ground, thereby ensuring the stability of the supporting leg 2;

[0051] The symmetric arrangement of the two groups of first connecting ears 62 and the second connecting ears 64 ensures the stability of the deflection;

[0052] The arrangement that the included angle between the projections of the first connecting ears 62 and the second connecting ears 64 on the horizontal plane is 90 degrees avoids the mutual interference of the first connecting ears 62 and the second connecting ears 64 during movement, and also enables the supporting plate 65 to have deflection ability in any direction, thereby better adapting to a non-horizontal plane.

[0053] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A pipeline backfill sand compaction degree detection equipment, characterized in that, it comprises a top plate (1), the periphery of the top plate (1) is fixedly connected with a supporting leg (2), the supporting leg (2) is telescopic, a test steel needle (3) is installed at the center of the top plate (1), and the test steel needle (3) can be detached from the top plate (1); a supporting foot (6) is connected to the lower end of the supporting leg (2); the supporting foot (6) comprises a mounting seat (61), the mounting seat (61) is fixedly connected to the lower end of the supporting leg (2), two groups of first connecting ears (62) are arranged on the lower surface of the mounting seat (61), and upper rotating ears (66) on a connecting piece (63) are rotatably connected to the first connecting ears (62); a supporting plate (65) is arranged below the connecting piece (63), two groups of second connecting ears (64) are arranged on the upper surface of the supporting plate (65), and lower rotating ears (67) on the connecting piece (63) are rotatably connected to the second connecting ears (64); the two groups of first connecting ears (62) are symmetrically arranged; the two groups of second connecting ears (64) are symmetrically arranged; the included angle between the projections of the first connecting ears (62) and the second connecting ears (64) on the horizontal plane is 90 degrees.

2. The pipeline backfill sand compaction degree detection equipment according to claim 1, characterized in that, the test steel needle (3) penetrates through the top plate (1), and a clamping jaw is fixedly connected to the top plate (1) and clamps the test steel needle (3).

3. The pipeline backfill sand compaction degree detection equipment according to claim 1, characterized in that, the supporting leg (2) comprises a sleeve (21), the sleeve (21) is fixedly connected to the top plate (1), a limiting support (4) is arranged on the sleeve (21), a limiting roller (5) is rotatably connected to the end of the limiting support (4) away from the supporting leg (2), and the limiting roller (5) is attached to the test steel needle (3).

4. The pipeline backfill sand compaction degree detection equipment according to claim 3, characterized in that, a screw rod (22) is inserted into the sleeve (21), a plurality of fastening pressing pieces (25) are arranged at the lower end of the sleeve (21), an internal thread (26) is arranged on the inner side of the fastening pressing piece (25), and the internal thread (26) is threadedly connected with the screw rod (22).

5. The pipeline backfill sand compaction degree detection equipment according to claim 4, characterized in that, the fastening pressing piece (25) is conical.

6. The pipeline backfill sand compaction degree detection equipment according to claim 4, characterized in that, a fastening thread (24) is arranged at the end of the sleeve (21) close to the fastening pressing piece (25), a fastening sleeve (23) is threadedly connected on the fastening thread (24), and the fastening sleeve (23) inwardly extrudes the fastening pressing piece (25).

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