CN217585581U - Displacement measuring device for anchor cable pulling resistance test - Google Patents

Abstract

The utility model provides a displacement measuring device for an anchor cable pulling-resistant test, which comprises an upper disc, a lower disc and a dial indicator top disc; connecting pieces are symmetrically fixed on two sides of the upper disc; the connecting piece is fixedly connected with the dial indicator top disc through a screw rod, wherein the screw rod is connected with the connecting piece through threads, and the dial indicator top disc is fixed at the upper end of the screw rod; the lower disc is fixedly connected with the upper disc through a fixing screw. The problems of low displacement measurement precision, low installation efficiency, difficult installation and replacement of dial indicators, inaccurate reading and the like in the prior art are solved.

Description

Displacement measuring device for anchor cable pulling resistance test

Technical Field

The utility model belongs to the technical field of anchor rope resistance to plucking test equipment, a experimental displacement measurement device of anchor rope resistance to plucking is related to.

Background

Anchor cables are widely applied to engineering construction of side slopes, foundation pits, tunnels and the like, and according to the requirements of construction specifications, an anchor cable pulling-resistant test is required after the anchor cable construction is finished so as to detect the application effect of the anchor cable; in the existing displacement measuring device for the anchor cable pulling-resistant experiment, the installation reference points of the displacement dial indicator are not standard, and are arranged on two sides of a jack, two sides of a counter-force support, two sides of a tool anchor head and the like, so that when the displacement measuring device is used for measuring the displacement of the anchor cable, the displacement generated in the stress process of the jack, the counter-force support and the tool anchor can be read, and the displacement measuring precision is not high; meanwhile, the installation space of the displacement dial indicator is limited, the displacement dial indicator is difficult to install and replace when the stroke of the displacement dial indicator is close, and the phenomenon of overhead dial indicator often occurs in the test process, so that the displacement reading is inaccurate.

Disclosure of Invention

In order to achieve the purpose, the utility model provides an experimental displacement measurement device of anchor rope resistance to plucking has solved that the displacement measurement precision that exists is low among the prior art, the installation effectiveness is low, the dial indicator installation is changed difficulty, the inaccurate scheduling problem of reading.

The utility model adopts the technical proposal that the displacement measuring device for the anchor cable pulling-resistant test comprises an upper disc, a lower disc and a dial indicator top disc; connecting pieces are symmetrically fixed on two sides of the upper plate; the connecting piece is fixedly connected with the dial indicator top disc through a screw rod, wherein the screw rod is connected with the connecting piece through threads, and the dial indicator top disc is fixed at the upper end of the screw rod; the lower disc is fixedly connected with the upper disc through a fixing screw.

Furthermore, the upper disc is integrally annular, and three arc-shaped sliding grooves are uniformly distributed on the annular; the lower disc is of a disc-shaped structure, three fixing screw holes are uniformly formed in the periphery of the disc, the positions of the fixing screw holes correspond to those of the arc-shaped sliding grooves, and fixing screws penetrate through the arc-shaped sliding grooves of the upper disc to be connected with the fixing screw holes.

Furthermore, a first anchor cable round hole is further formed in the inner side of the fixing screw hole of the lower disc, and the central axis of the first anchor cable round hole is parallel to the central axis of the lower disc.

Furthermore, a locking jackscrew hole is further formed between the side wall of the first anchor cable circular hole and the side wall of the lower plate, and a jackscrew is connected to the inner portion of the locking jackscrew hole through threads.

Further, a nut is mounted on the screw rod.

Furthermore, the dial indicator top plate is a circular steel plate with the diameter of 100mm and the thickness of 2-4mm, and a threaded blind hole is formed in the center of one surface of the circular steel plate.

Furthermore, the dial indicator top plate is in contact with a probe of the dial indicator, and the dial indicator is fixed on the reference beam through the dial indicator support and the magnetic indicator seat.

The utility model has the advantages that:

1) Eliminating system errors: the displacement measurement system and the counter-force system are thoroughly separated and do not affect each other, so that the displacement synchronization of the reference device and the anchor cable is realized, and the systematic error influence of the displacement of the anchorage device, the jack and the counter-force seat is eliminated.

2) The top plate can rotate to adjust the angle, so that the dial indicator is always horizontally installed, and the observation is convenient. The double-meter symmetrical installation measurement is more accurate.

3) The threaded connection is adopted, and the installation is fast and convenient.

4) The meter adjustment is convenient and flexible: when the stroke of the dial indicator is about to be exhausted, the initial reference value of the dial indicator can be quickly adjusted without detaching the dial indicator.

5) And (4) multiple functions: the two cables, the three cables and the four cables are universal. The upper disc is used independently, and can also be used for carrying out anchor rod and soil nail pulling-resistant tests.

6) Is firm and durable, is suitable for field environment and is not easy to damage.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a structural diagram of a lower plate according to an embodiment of the present invention.

Fig. 3 is an installation schematic diagram of the upper plate and the dial indicator top plate of the embodiment of the present invention.

Fig. 4 is a top view of fig. 3.

In the figure, 1, a lower disc, 2, a locking jackscrew hole, 2-1 jackscrew, 3, a first anchor rope round hole, 4, a fixing screw hole, 4-1, a fixing screw, 5, an upper disc, 6, an arc chute, 7, a second anchor rope round hole, 8, a connecting piece, 9, a screw rod, 10, a dial indicator top disc, 11, a nut, 12, an anchor rope, 13, a dial indicator bracket, 14, a magnetic gauge seat, 15, a reference beam and 16, a dial indicator are arranged.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-4, the displacement measuring device for the anchor cable pulling resistance test provided by the present invention comprises an upper plate 5, a lower plate 1 and a dial indicator top plate 10, wherein the upper plate 5 has a structure as shown in fig. 2 and 3, and is integrally in a ring shape, three arc chutes 6 are uniformly arranged on the ring, and a second anchor cable circular hole 7 is arranged inside the ring for the anchor cable 12 to pass through; two connecting pieces 8 are symmetrically fixed on two sides of the upper disc 5, the connecting pieces 8 are connected with a screw rod 9 through threads, and the upper end of the screw rod 9 is fixedly connected with the center of a dial indicator top disc 10; the structure of the lower disc 1 is as shown in fig. 1, the lower disc 1 is a disc-shaped structure, three fixing screw holes 4 are uniformly arranged around the disc, the positions of the fixing screw holes 4 correspond to the positions of the arc-shaped chutes 6, and fixing screws 4-1 penetrate through the arc-shaped chutes 6 of the upper disc 5 to be connected with the fixing screw holes 4, so that the upper disc 5 and the lower disc 1 are fixed together.

In some embodiments, the dial indicator top plate 10 is composed of a circular steel plate with the diameter of 100mm and the thickness of 2-4mm, the screw rod 9 is connected with the connecting piece 8 on two sides of the upper plate 5 through threads during assembly, the stroke of the dial indicator 16 is adjusted by rotating the screw rod 9 in the forward and reverse directions, and the screw rod 9 is fixed by rotating the nut 11 on the screw rod 9 to enable the nut 11 to be attached to the connecting piece 8.

In some embodiments, 2-4 first anchor cable round holes 3 are further formed inside the fixing screw hole 4 of the lower disc 1, a central axis of each first anchor cable round hole 3 is parallel to a central axis of the lower disc 1, and each first anchor cable round hole 3 is used for installing an anchor cable 12; a locking jackscrew hole 2 is further arranged between the side wall of the first anchor cable round hole 3 and the side wall of the lower disc 1, and a jackscrew is connected to the inner portion of the locking jackscrew hole 2 in a threaded mode and used for fixing an anchor cable 12.

In some embodiments, at the time of measurement. And a dial indicator 16 is fixed on a reference beam 15 opposite to the measuring device through a dial indicator bracket 13 and a magnetic indicator base 14, and a probe of the dial indicator 16 is in contact with the dial indicator top plate 10 so as to measure the displacement of the dial indicator top plate 10.

When the displacement measurement in the anti-pulling test is carried out by using the utility model, the jackscrews 2-1 around the lower disc 1 are loosened, the anchor cable 12 for the anti-pulling test passes through the first anchor cable round hole 3 in the center of the lower disc 1, and the jackscrews 2-1 are screwed down to fix the anchor cable 12 and the lower disc 1; an anchor rope 12 penetrates through a second anchor rope round hole 7 in the middle of the upper disc 5, a fixing screw 4-1 penetrates through an arc-shaped chute 6 of the upper disc 5 and then is connected with a fixing screw hole 4 in the lower disc 1, the upper disc 5 and the lower disc 1 are fixed, a screw rod 9 penetrates through connecting pieces 8 on two sides of the upper disc 5 and is in threaded connection with the connecting pieces 8, and the other end of the screw rod 9 is fixedly connected with a dial indicator top disc 10.

In some embodiments, in the detection process, the fixing screws 4-1 are loosened, the upper disc 5 is rotated, and the positions of the fixing screws 4-1 in the arc-shaped sliding grooves 6 are adjusted, so that the central axes of the two dial indicator top discs 10 are kept horizontal, the two dial indicators 16 can be kept horizontal all the time, and the measurement is convenient; when the stroke of the dial indicator 16 is to be exhausted, the dial indicator 16 does not need to be detached, the distance between the dial indicator top plate 10 and the probe of the dial indicator 16 can be adjusted by using the screw rod 9, and the initial reference value of the dial indicator 16 can be quickly adjusted.

Because the probe of the dial indicator 16 of the measuring device is contacted with the dial indicator top disc 10, the dial indicator top disc 10 is connected with the upper disc 5, the upper disc 5 is connected with the lower disc 1, and the lower disc 1 is fixed on the anchor cable 12, the displacement of the anchor cable 12 is directly measured and read by the dial indicator 16, and the displacement of the tool anchor, the jack and the counter-force support used in the anti-pulling test can not cause the anchor cable 12 to generate displacement, so the reading is more accurate.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on differences from other embodiments.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (7)

1. A displacement measuring device for an anchor cable pulling-resistant test is characterized by comprising an upper disc (5), a lower disc (1) and a dial indicator top disc (10); connecting pieces (8) are symmetrically fixed on two sides of the upper disc (5); the connecting piece (8) is fixedly connected with the dial indicator top disc (10) through a screw rod (9), wherein the screw rod (9) is connected with the connecting piece (8) through threads, and the dial indicator top disc (10) is fixed at the upper end of the screw rod (9); the lower disc (1) and the upper disc (5) are fixedly connected through a fixing screw.

2. The displacement measuring device for the anchor cable pulling-resistant test is characterized in that the upper disc (5) is annular as a whole, and three arc-shaped chutes (6) are uniformly distributed on the annular; the lower disc (1) is of a disc-shaped structure, three fixing screw holes (4) are uniformly formed in the periphery of the disc, the positions of the fixing screw holes (4) correspond to those of the arc-shaped sliding grooves (6), and fixing screws penetrate through the arc-shaped sliding grooves (6) of the upper disc (5) and are connected with the fixing screw holes (4).

3. The displacement measuring device for the anchor cable pulling-resistant test is characterized in that a first anchor cable round hole (3) is further formed in the inner side of the fixing screw hole (4) of the lower disc (1), and the central axis of the first anchor cable round hole (3) is parallel to the central axis of the lower disc (1).

4. The displacement measuring device for the anchor cable pulling resistance test according to claim 3, wherein a locking jackscrew hole (2) is further formed between the side wall of the first anchor cable round hole (3) and the side wall of the lower disc (1), and a jackscrew is in threaded connection with the inside of the locking jackscrew hole (2).

5. The displacement measuring device for the pulling resistance test of the anchor cable according to claim 1, wherein a nut (11) is mounted on the screw rod (9).

6. The displacement measuring device for the anchor cable pulling resistance test is characterized in that the dial indicator top plate (10) is a circular steel plate with the diameter of 100mm and the thickness of 2-4mm, and a threaded blind hole is formed in the center of one surface of the circular steel plate.

7. The displacement measuring device for the anchor cable pulling-resistant test is characterized in that the dial indicator top plate (10) is in contact with a probe of a dial indicator (16), and the dial indicator (16) is fixed on a reference beam (15) through a dial indicator bracket (13) and a magnetic indicator base (14).

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