Digital display steel chisel penetration meter

Abstract

The utility model relates to the technical field of detection instruments, and particularly discloses a digital display steel chisel penetration instrument which comprises a steel chisel guide pipe, a base and a top plane, the lower end of the steel chisel guide pipe is fixedly connected to the upper end of the top plane, the lower end of the top plane is fixedly connected with the base through three supporting rods, and a steel chisel is arranged in the steel chisel guide pipe; a supporting frame is fixedly arranged at the upper end of the top plane, a rotating shaft is rotationally arranged on the supporting frame, a distance measuring rotating plate is fixedly arranged at one end of the rotating shaft, a coding distance measuring roller is fixedly arranged at the other end of the distance measuring rotating plate, a coding wheel testing hole is formed in the steel chisel guide pipe, and one side of the coding distance measuring roller is located in the coding wheel testing hole. The side, close to the coding wheel testing hole, of the coding distance measuring roller makes contact with the steel chisel. According to the utility model, the insertion depth of the steel chisel can be automatically recorded, the precision is higher, the descending height and inclination of the steel chisel are more accurately controlled, and the impact energy is more standard.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of detection instrument, concretely relates to a digital display steel drill penetration meter. BACKGROUND

[0002] In the urban road construction, the medium coarse sand is backfilled in the chest cavity and the pipe top backfill of the drainage pipe, which plays a role in protecting the pipe wall. The yellow sand should be backfilled in layers, about 20cm per layer. Some sewage backfill is deeper, reaching more than 10 layers. When backfilling the upper layer, the quality of the lower layer needs to be evaluated, and whether to proceed to the next backfilling process is determined according to the evaluation results. At present, the compaction degree of pipe backfill is mostly detected by the cutting ring method. This method requires the detection unit to take samples on site and send them to the indoor laboratory for detection. The sampling time and test time of each layer is about 8 hours. This method is accurate, but the cycle is too long.

[0003] As one of the methods to control the compaction quality of yellow sand backfill, the steel drill method is used in some projects to indirectly control the compaction degree under the condition of tight construction period. The detection result accuracy of this method is slightly inferior to the cutting ring method, but the detection cycle is very short. The test cycle time of the steel drill insertion method is less than 1 minute each time, and the detection unit does not need to be present for detection each time in the later stage. Under the supervision of the supervision unit, the construction unit self-checks, and the steel drill penetration method is used to control the compaction quality of yellow sand, which greatly shortens the detection cycle.

[0004] For the commonly used backfill sand with dry density ≥1.6kN / m 3 , the steel drill penetration method is used for testing. A Φ16mm, 196cm long steel bar (the head is flat) is vertically dropped from a height of 50cm. When the insertion depth is less than or equal to 7cm, it is considered that the compaction degree of the yellow sand reaches the light compaction standard value of 90% or more. When the insertion depth is less than or equal to 5cm, it is considered that the compaction degree of the yellow sand reaches the light compaction standard value of 95% or more.

[0005] This method is simple to operate. The palm holds the steel drill and lifts it to a distance of 50cm from the surface of the yellow sand, vertically to the ground. The steel bar is quickly released by hand, making the steel bar fall vertically. The steel drill is inserted into the surface of the yellow sand. After the steel drill is inserted into the yellow sand, the thumb and index finger pinch the steel bar. The tip of the thumb nail is aligned with the position of the steel drill and the top layer of the yellow sand. The steel bar is pulled out, and the distance from the tip of the thumb nail to the bottom end of the steel drill is measured with a steel ruler. This is the steel drill penetration method.

[0006] The prior art uses a manual method to read the steel bar penetration depth, which is relatively simple and rough, has a large human error, and has many factors that can easily affect the detection result, the steel bar is held by hand, the steel bar is long and heavy, and it is difficult to ensure the verticality during operation, the shaking range is large in front, back, left and right, and the height swing is also large, the actual drop height is often within 48cm to 52cm, the precision of the method is not high at present, the error is large, and the detection result is easily distorted, which seriously affects the engineering quality. Practical new type content

[0007] To solve the above problems in the prior art, the utility model provides a digital steel bar penetration depth instrument, can automatic record steel bar insertion depth, precision is higher, steel bar drop height and inclination control are more accurate, impact energy is more standard.

[0008] The purpose of the utility model can be achieved through the following technical solutions:

[0009] A digital steel bar penetration depth instrument, including steel bar guide pipe, base and top plane, the lower end of the steel bar guide pipe is fixedly connected to the upper end of the top plane, the lower end of the top plane is fixedly connected with the base through three supporting rods, the inside of the steel bar guide pipe is provided with a steel bar;

[0010] The upper end of the top plane is fixedly provided with a support frame, a rotating shaft is rotatably arranged on the support frame, a distance measuring rotating plate is fixedly arranged on one end of the rotating shaft, a coded distance measuring roller is fixedly arranged on the other end of the distance measuring rotating plate, a coded wheel test hole is formed in the steel bar guide pipe, one side of the coded distance measuring roller is located in the coded wheel test hole, and the side of the coded distance measuring roller close to the coded wheel test hole is in contact with the steel bar.

[0011] Further, the three supporting rods are evenly distributed on the upper end of the base.

[0012] Further, the upper end of the top plane is fixedly provided with a battery, and one side of the top plane is provided with a coded distance measuring display.

[0013] Further, the battery is electrically connected with the coded distance measuring display and the coded distance measuring roller.

[0014] Further, the lower end of the steel bar is provided with a scale.

[0015] Further, a latch hole is formed in one side of the steel bar guide pipe, and a fixed latch is fixedly arranged in the latch hole.

[0016] Further, the latch hole and the coded wheel test hole are located on the two sides of the steel bar guide pipe respectively.

[0017] Further, the fixed vertical height 50cm position of the steel drill is provided with an encoding test device.

[0018] The utility model discloses beneficial effect is:

[0019] (1) through setting up steel drill guide pipe, steel drill and encoding distance measuring roller, the technical effect that can reach is that the lower end fixed connection of steel drill guide pipe is in the top plane upper end, and the lower end of top plane is fixedly connected with base through three support rods, and the inside of steel drill guide pipe is provided with steel drill, and the upper end of top plane is fixedly provided with support frame, and the rotary shaft is rotatably arranged on the support frame, and the rotary shaft is fixedly provided with distance measuring rotary plate on one end, and the other end of distance measuring rotary plate is fixedly provided with encoding distance measuring roller, and the steel drill guide pipe is provided with encoding wheel test hole, and one side of encoding distance measuring roller is located in the encoding wheel test hole, and the side of encoding distance measuring roller close to encoding wheel test hole is in contact with steel drill;

[0020] The precision of the steel drill descending height 50cm is ±0.1cm, the steel drill guide pipe can prevent the steel drill from swinging left and right, the impact energy is more standard, the steel drill insertion depth can be automatically recorded, the precision is higher, and the steel drill descending height and inclination control are more accurate.

[0021] (2) through setting up steel drill and scale, the technical effect that can reach is that the scale is marked on the side of steel drill at the bottom end by laser engraving technology, the bottom end of steel drill is taken as zero scale, and the large numerical scale line is marked in the direction of top end, the steel drill insertion depth value can be directly read, when the value deviation between the encoding distance measuring display value and the scale on the steel drill is more than ±1 when the scale on the steel drill is flush with the sand surface, the steel drill insertion depth value is invalid, and the zero point of the bottom of steel drill and the sand surface should be recalibrated.

[0022] The steel drill and scale can detect the deviation value of the steel drill insertion depth value, the measurement data can be found in time, the measurement efficiency is improved, and the rework and resource waste caused by wrong measurement data are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in combination with the drawings.

[0024] Figure 1 It is the first perspective view of the utility model;

[0025] Figure 2 It is Figure 1 It is the local enlarged view of A in the middle;

[0026] Figure 3 It is the second perspective view of the utility model;

[0027] Figure 4 It is the first perspective view of the utility model in which the steel drill, base and three support rods are removed;

[0028] Figure 5 Figure 2 is a second perspective view of the steel drill, base and three support rods being removed in the utility model;

[0029] Figure 6 Figure 3 is a perspective view of the steel drill guide tube in the utility model;

[0030] Explanation of reference signs:

[0031] In the figure: 1, base; 2, top plane; 3, steel drill guide tube; 4, steel drill; 5, support rod; 6, fixed bolt; 7, coded distance measuring display; 8, coded distance measuring roller; 9, battery; 10, coded wheel test hole; 11, scale; 12, distance measuring rotating plate; 13, rotating shaft; 14, support frame. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0033] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0035] Reference Figures 1 to 6The present invention discloses a digital display steel rod penetration meter, which includes a steel rod guide tube 3, a base 1 and a top plane 2. The lower end of the steel rod guide tube 3 is fixedly connected to the upper end of the top plane 2, and the lower end of the top plane 2 is fixedly connected to the base 1 by three support rods 5. A steel rod 4 is provided inside the steel rod guide tube 3.

[0036] A support frame 14 is fixedly installed at the upper end of the top plane 2. A rotating shaft 13 is rotatably installed on the support frame 14. A ranging rotating plate 12 is fixedly installed at one end of the rotating shaft 13. An encoding ranging roller 8 is fixedly installed at the other end of the ranging rotating plate 12. An encoding wheel test hole 10 is opened on the steel rod guide tube 3. One side of the encoding ranging roller 8 is located in the encoding wheel test hole 10. The side of the encoding ranging roller 8 near the encoding wheel test hole 10 is in contact with the steel rod 4.

[0037] Three support rods 5 are evenly distributed on the upper end of the base 1.

[0038] A battery 9 is fixedly installed at the upper end of the top plane 2, and an coded distance measuring display 7 is installed on one side of the top plane 2.

[0039] Battery 9 is electrically connected to the coded ranging display 7 and the coded ranging roller 8.

[0040] The lower end of the steel rod 4 is equipped with a scale 11. The steel rod 4 and the scale 11 can detect the deviation value of the insertion depth of the digital steel rod 4, which makes it easy to detect whether the measurement data is wrong in time, improves the measurement efficiency, and reduces rework and resource waste caused by incorrect measurement data.

[0041] A pin hole is provided on one side of the steel rod guide tube 3, and a fixing pin 6 is fixedly installed on the pin hole.

[0042] The pin hole and the encoder wheel test hole 10 are located on both sides of the steel rod guide tube 3.

[0043] A coding test device is installed at a fixed vertical height of 50cm on the steel rod 4. The coding test device can automatically collect and display the depth of the steel rod 4 inserted into the yellow sand.

[0044] The accuracy of the steel rod 4's descent height of 50cm is ±0.1cm. The steel rod guide tube 3 can prevent the steel rod 4 from swinging back and forth and left and right, making the impact energy more standardized. It can automatically record the insertion depth of the steel rod 4 with higher accuracy, and the descent height and tilt of the steel rod 4 are more accurately controlled.

[0045] The working principle and use process of the utility model are as follows: the fixed bolt 6 is pulled out before first detection, the battery 9 is powered on, the contact zero point of the steel drill 4 and the sand surface is corrected, then the steel drill 4 is lifted to the bolt hole, because the coding distance measuring roller 8 is close to the surface of the steel drill 4, the coding distance measuring roller 8 is reversed, at this time, the value of the coding distance measuring display 7 is -50cm, the fixed bolt 6 is inserted, the bottom end of the steel drill 4 is fixed at the fixed bolt 6, when the steel drill 4 freely falls and just contacts the sand surface, the coding distance measuring display 7 is 0cm, the steel drill 4 continues to fall until the steel drill 4 is inserted into the sand surface, the coding distance measuring display 7 is a positive value, when the steel drill 4 is not falling after being inserted into the sand surface, the coding distance measuring roller 8 also stops rotating, at this time, the display value of the coding distance measuring display 7 is the depth of the steel drill 4 after falling vertically from the height of -50cm and being inserted into the yellow sand, the value is the penetration value of the steel drill 4;

[0046] The scale 11 is marked on the side surface of the steel drill 4 by using the laser lettering technology at the bottom end of the steel drill 4, the bottom end of the steel drill 4 is taken as zero scale, the large scale line is marked in the direction of the top end, the insertion depth value of the steel drill 4 can be directly read out, when the value deviation between the coding distance measuring display value and the scale on the steel drill 4 and the sand surface is more than ±1, the insertion depth value of the digital display steel drill 4 is invalid, the zero point of the bottom of the steel drill 4 and the sand surface should be re-calibrated.

[0047] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, although the utility model has been disclosed as above, however, the utility model is not limited, any person skilled in the art can make some changes or modifications for the equivalent embodiment with the disclosed technical content without departing from the technical scheme of the utility model, as long as the changes, modifications, equivalent changes and modifications of the above embodiment do not depart from the technical scheme of the utility model, and the technical essence of the utility model, all still belong to the range of the technical scheme of the utility model.

Claims

1. A digital steel rod penetrometer, characterized in that: Including steel drill guide tube (3), base (1) and top plane (2), the lower end of the steel drill guide tube (3) is fixedly connected to the upper end of the top plane (2), the lower end of the top plane (2) is fixedly connected with the base (1) through three supporting rods (5), the inside of the steel drill guide tube (3) is provided with a steel drill (4); The upper end of the top plane (2) is fixedly provided with a support frame (14), a rotating shaft (13) is rotatably arranged on the support frame (14), a ranging rotating plate (12) is fixedly arranged on one end of the rotating shaft (13), an encoding ranging roller (8) is fixedly arranged on the other end of the ranging rotating plate (12), an encoding wheel test hole (10) is formed in the steel drill guide tube (3), one side of the encoding ranging roller (8) is located in the encoding wheel test hole (10), and the side, close to the encoding wheel test hole (10), of the encoding ranging roller (8) is in contact with the steel drill (4).

2. The digital steel drill penetration apparatus according to claim 1, wherein: The three supporting rods (5) are evenly distributed on the upper end of the base (1).

3. The digital steel rod penetrometer according to claim 1, characterized in that: A battery (9) is fixedly arranged on the upper end of the top plane (2), and an encoding ranging display (7) is arranged on one side of the top plane (2).

4. The digital steel rod penetrometer according to claim 3, characterized in that: The battery (9) is electrically connected with the encoding ranging display (7) and the encoding ranging roller (8).

5. The digital steel rod penetrometer according to claim 1, characterized in that: A scale (11) is arranged on the lower end of the steel drill (4).

6. The digital steel rod penetrometer according to claim 1, characterized in that: A bolt hole is formed in one side of the steel drill guide tube (3), and a fixed bolt (6) is fixedly arranged in the bolt hole.

7. The digital steel drill penetration gauge according to claim 6, wherein: The bolt hole and the encoding wheel test hole (10) are respectively located on two sides of the steel drill guide tube (3).

8. The digital steel rod penetrometer according to claim 1, characterized in that: An encoding test device is arranged at a position with a fixed vertical height of 50 cm of the steel drill (4).

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