Steel bar weight deviation detector

Abstract

The present invention relates to the field of building material testing equipment, in particular to a steel bar weight deviation detector. It aims to solve the problem that the steel bar weight deviation detection method in the prior art is simple and single in targeting. The present invention includes a base, a weighing mechanism is installed on the base, and a diameter detection unit is slidably installed on the base. The weighing mechanism includes an elastic base, a driving steel bar support unit, a mobile steel bar support unit and a fixed steel bar support unit installed on the elastic base, and the driving steel bar support unit, the mobile steel bar support unit and the fixed steel bar support unit are provided with steel bar support through holes with the same shape and position. The mobile steel bar support unit is provided with a moving pair connection between the elastic base, and the number of through holes is 5, which are distributed in a circular array. The advantages are: the weight, coarseness and uniformity, curvature and other indexes of the sample can be measured simultaneously, and the installation and disassembly of the test piece are convenient.

Description

Technical Field

[0001] The invention relates to the field of building material testing equipment, in particular to a steel bar weight deviation detector. Background Art

[0002] Rebar is a common building material. Its inspection standards can be summarized as whether the external dimensions are in compliance with regulations and whether the internal strength and hardness are in compliance with regulations. In the inspection of external dimensions, the current inspection method mainly measures its weight, and then calculates it in combination with the national standard size and density to verify whether its weight is within the compliance range. This method is relatively traditional, but it has low technical requirements for workers and is still widely used.

[0003] Among the Chinese patent documents that have been made public, the patent number CN201611103125.2, titled "A Steel Bar Weight Deviation Detection Instrument", discloses a device with a calibration disk. The device is also equipped with a scanning device, which scans the length and diameter of the device, and then verifies the volume and density of the test sample to detect whether its own density is within the specified range.

[0004] There is also a patent with application number CN201922160709.9, named Steel Bar Weight Deviation Detector, which provides a detection device combined with a laser rangefinder. The laser rangefinder detects the size information of the tested piece and then detects whether the test piece is qualified.

[0005] However, the applicant believes that most of the current technologies start from the length and weight of the steel bars, and detect whether their weight is within a reasonable range of the corresponding length. However, they do not take into account the situation where the thickness of the steel bars is inconsistent during the malicious stretching or torsion of the steel bars, and there is no corresponding detection of the shape and position dimensions. The detection is imperfect, the detection method is simple, and the targeting is single. Summary of the invention

[0006] The purpose of the present invention is to solve the problems of imperfect detection, simple detection method and single targeting in the prior art.

[0007] The specific scheme of the present invention is:

[0008] A steel bar weight deviation detector is designed, comprising a base, a weighing mechanism is installed on the base, and a diameter detection unit is slidably installed on the base, the weighing mechanism comprises an elastic base, a driving steel bar support unit, a movable steel bar support unit and a fixed steel bar support unit are installed on the elastic base, the driving steel bar support unit, the movable steel bar support unit and the fixed steel bar support unit are provided with steel bar support through holes with the same shape and position, a movable pair is provided between the movable steel bar support unit and the elastic base, and the number of the through holes is 5, which are distributed in a circular array.

[0009] In a specific implementation, a sleeve is provided on the steel bar hole of the movable steel bar support unit, a pressure sensor is provided in the sleeve, and the pressure sensor is communicatively connected with the main control console; the side of the movable steel bar support unit is detachably buckled with a support pole.

[0010] The driving steel bar support unit is provided with a power mechanism and a friction wheel driven by the power mechanism, each through hole is provided with a stepped shaft to loosely cover a driven wheel, and a friction ring for transmitting power is provided between the driven wheel and the sample steel bar.

[0011] In a specific implementation, the diameter detection unit includes a non-contact detection element and a partition to prevent obstruction between steel bars. The non-contact detection element is connected to the main control console by a circuit, and the partition passes through the movable steel bar support unit to form a movable pair connection.

[0012] In a specific implementation, a transmission belt mechanism is installed at the bottom of the diameter detection unit to drive the diameter detection unit to rotate at a constant speed.

[0013] In a specific implementation, size adaption rings are provided on the through holes of the driving steel bar support unit, the moving steel bar support unit and the fixed steel bar support unit.

[0014] In a specific implementation, five partition grooves are evenly distributed on the circumference of the movable steel bar support unit, and the corresponding driving steel bar support unit and the fixed steel bar support unit are provided with partition end fixing grooves.

[0015] In a specific implementation, a rocker-type bracket is further provided on the outer side of the fixed steel bar support unit, and a non-contact length detection device is provided on the rocker-type bracket to measure the distance that the steel bar extends out of the fixed steel bar support unit. The rocker-type bracket comprises a stepped telescopic cylinder (15) at the bottom and a rocker (16) installed at the end of the telescopic cylinder. The telescopic cylinder is provided with a scale to calculate the observed stretching length.

[0016] In a specific implementation, a motor and a gear rack mechanism for driving the movable steel bar support unit to move are provided in the movable pair between the movable steel bar support unit and the elastic base; a motor and a gear rack mechanism for driving the diameter detection unit to move are installed between the diameter detection unit and the base.

[0017] The beneficial effects of the present invention are:

[0018] A set of equipment was designed. First, the disassembly and assembly of the test piece was convenient during the test. Second, the sampling was reasonable. Five samples were randomly sampled from the entire batch for information collection, which achieved the balance and scientificity of the sampling.

[0019] Different from other technologies that infer whether the density is qualified based on the volume information and weight information, this application also realizes dynamic measurement to measure whether the uniformity of the sample is qualified and whether the curvature is compliant;

[0020] The designed power mechanism that drives a single steel bar to rotate can be effectively combined with a non-contact detector to detect whether the outer diameter change of the steel bar is within the regular allowable range. At the same time, the design of the moving pair improves the flexibility of adjustment during the installation of the test piece.

[0021] Non-contact measurement in multiple directions can measure multiple data. For example, when the sample steel bars are of different lengths, it can assist in detecting the length of the sample steel bars.

[0022] On the one hand, the limiting groove can form a moving pair to facilitate the movement of the moving steel bar support unit in the middle, and on the other hand, it plays the role of a shielding plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a stereogram of the structure of the present invention;

[0024] Figure 2 It is another perspective view of the structure of the present invention;

[0025] Figure 3 yes Figure 1 The main view in the structure;

[0026] Figure 4 yes Figure 1 A top view of the structure;

[0027] Figure 5 yes Figure 1 Left view in structure;

[0028] Figure 6 yes Figure 1 Right view in structure;

[0029] The names of the components in the figure are: 1. Base; 2. Elastic base; 3. Drive steel bar support unit; 4. Mobile steel bar support unit; 5. Fixed steel bar support unit; 6. Diameter detection unit; 7. Sleeve; 8. Main control console; 9. Friction wheel; 10. Driven wheel; 11. Support vertical rod; 12. Partition; 13. Non-contact length detection device; 14. Non-contact detection element; 15. Stepped telescopic cylinder; 16. Rocker; 17. Limiting groove. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] Example 1

[0032] A steel bar weight deviation detector, see Figures 1 to 6, including a base 1, a weighing mechanism is installed on the base 1, and a diameter detection unit 6 is slidably installed on the base 1. The weighing mechanism includes an elastic base 2, a driving steel bar support unit 3, a moving steel bar support unit 4 and a fixed steel bar support unit installed on the elastic base 2, and the driving steel bar support unit 3, the moving steel bar support unit 4 and the fixed steel bar support unit are provided with steel bar support through holes with the same shape and position, and the moving steel bar support unit 4 is provided with a moving pair connection between the elastic base 2, and the number of through holes is 5, which are distributed in a circular array. During the detection, five steel bars are selected and inserted into the corresponding through holes in turn, and then the relative positions of the driving steel bar support unit 3, the moving steel bar support unit 4 and the fixed steel bar support unit are adjusted to achieve reasonable and stable fixation for subsequent observation.

[0033] The steel bar hole of the mobile steel bar support unit 4 is provided with a sleeve 7, and a pressure sensor is provided inside the sleeve 7, and the pressure sensor is connected to the main control console 8 in communication; the side of the mobile steel bar support unit 4 is detachably buckled with a support pole 11. The purpose of setting the pressure sensor is to understand the difference in the pressure values ​​in each hole through observation, so as to determine that the bending degree of the sample in the through hole with high pressure is large, and then use the data standard to determine whether its bending degree is qualified. The purpose of designing the support pole to be detachable is that it can play a supporting role in the installed state, and can adjust the position in combination with the limit groove 17, and the sliding of the detection element will not be affected after disassembly.

[0034] The driving steel bar support unit 3 is provided with a power mechanism and a friction wheel 9 driven by the power mechanism. Each through hole is provided with a stepped shaft with an empty sleeve driven wheel 10. A friction ring for transmitting power is provided between the driven wheel 10 and the sample steel bar. During the working process, the power mechanism transmits power to drive each sample steel bar to rotate. Then, the pressure sensor is used to detect whether the bending is qualified. At the same time, while rotating, the diameter detection unit 6 works to detect various diameter data, determine whether the thickness is consistent, and whether the cross section is elliptical rather than approximately circular. The shape and position tolerances of the steel bar surface are further detected. In specific work, the friction wheel 9 can also be replaced by a gear.

[0035] The diameter detection unit 6 includes a non-contact detection element and a partition 12 to prevent shielding between steel bars. The non-contact detection element is connected to the main control console by a circuit, and the partition 12 passes through the movable steel bar support unit 4 to form a movable pair connection.

[0036] The bottom of the diameter detection unit 6 is installed with a transmission belt mechanism that drives it to rotate at a constant speed. The transmission belt mechanism adopts a common mechanism and is not drawn in the drawings. The purpose is to drive the diameter detection unit 6 to move smoothly and at a constant speed to detect data.

[0037] The through holes of the driving steel bar support unit 3, the moving steel bar support unit 4 and the fixed steel bar support unit are provided with size adapter rings. Various types of steel bars can be detected. When the diameter of the detected steel bar is small, the size adapter ring is installed externally, and the size adapter ring is matched with the axial hole between the through holes. It should be noted here that the size adapter ring has elasticity inside and is an interference fit connection with the steel bar to prevent the steel bar from slipping inside the size adapter ring, affecting the measurement accuracy and bringing safety hazards.

[0038] In a specific implementation, five partition plates 12 grooves can be evenly distributed on the movable steel bar support unit 4, and corresponding driving steel bar support units 3 and fixed steel bar support units are provided with end fixing grooves of the partition plates 12. The purpose of the partition plates 12 is, on the one hand, to prevent interference between the upper and lower steel bars during detection, and on the other hand, to design an auxiliary support between the driving steel bar support unit 3, the movable steel bar support unit 4 and the fixed steel bar support unit.

[0039] A motor and a gear rack mechanism for driving the movable steel bar support unit 4 to move are installed in the moving pair between the movable steel bar support unit 4 and the elastic base 2; a motor and a gear rack mechanism for driving the diameter detection unit 6 to move are installed between the diameter detection unit 6 and the base 1.

[0040] Example 2

[0041] In this embodiment, the principle is the same as that of the embodiment 1, and the specific difference is that a rocker 16-type bracket is also provided on the outside of the fixed steel bar support unit, and a non-contact length detection device 13 is provided on the rocker 16-type bracket to measure the distance of the steel bar extending out of the fixed steel bar support unit. The rocker 16-type bracket includes a stepped telescopic cylinder 15 at the bottom and a rocker 16 installed at the end of the telescopic cylinder. A scale is provided on the telescopic cylinder to calculate the observed stretching length. During operation, a detection space is formed between the non-contact length detection device 13 on the rocker 16-type bracket and the stepped telescopic cylinder 15, and the length of each extended steel bar can be detected one by one. At the same time, if the steel bar extends too long, the telescopic cylinder can be stretched. The working stretching and contraction principle of the telescopic cylinder is similar to a multi-layer concentric sleeve structure.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel bar weight deviation detector, characterized in that: The invention comprises a base (1), a weighing mechanism is mounted on the base (1), and a diameter detection unit (6) is slidably mounted on the base (1), the weighing mechanism comprises an elastic base (2), a driving steel bar support unit (3), a movable steel bar support unit (4) and a fixed steel bar support unit are mounted on the elastic base (2), the driving steel bar support unit (3), the movable steel bar support unit (4) and the fixed steel bar support unit are provided with steel bar support through holes with the same shape and position, the movable steel bar support unit (4) and the elastic base (2) are connected by a moving pair, the number of the through holes is 5 and they are distributed in a circular array, the steel bar holes of the movable steel bar support unit (4) are provided with sleeves (7), the sleeves A pressure sensor is provided in the cylinder (7), and the pressure sensor is communicatively connected with the main control console (8); the side of the movable steel bar support unit (4) is detachably mounted with a support upright pole (11); the driving steel bar support unit (3) is provided with a power mechanism and a friction wheel (9) driven by the power mechanism; each through hole is provided with a stepped shaft with an empty sleeve of a driven wheel (10); a friction ring for transmitting power is provided between the driven wheel (10) and the sample steel bar; the diameter detection unit (6) includes a non-contact detection element and a partition (12) for preventing shielding between steel bars; the non-contact detection element and the main control console are connected by a circuit; the partition (12) passes through the movable steel bar support unit (4) to form a movable pair connection.

2. The steel bar weight deviation detector according to claim 1, characterized in that: A transmission belt mechanism is installed at the bottom of the diameter detection unit (6) to drive it to rotate at a constant speed.

3. The steel bar weight deviation detector according to claim 2, characterized in that: Size adaption rings are provided on the through holes of the driving steel bar support unit (3), the moving steel bar support unit (4) and the fixed steel bar support unit.

4. The steel bar weight deviation detector according to claim 1, characterized in that: The movable steel bar support unit (4) is provided with five partition plate (12) grooves evenly distributed around the circumference, and the corresponding driving steel bar support unit (3) and the fixed steel bar support unit are provided with partition plate (12) end fixing grooves.

5. The steel bar weight deviation detector according to claim 1, characterized in that: A rocker (16) type bracket is also provided on the outer side of the fixed steel bar support unit. A non-contact length detection device (13) is provided on the rocker (16) type bracket to measure the distance that the steel bar extends out of the fixed steel bar support unit. The rocker (16) type bracket comprises a stepped telescopic cylinder (15) at the bottom and a rocker (16) installed at the end of the telescopic cylinder. A scale is provided on the telescopic cylinder to calculate the observed stretching length.

6. The steel bar weight deviation detector according to claim 1, characterized in that: A motor and a gear rack mechanism for driving the movable steel bar support unit (4) to move are provided in the movable pair between the movable steel bar support unit (4) and the elastic base (2); and a motor and a gear rack mechanism for driving the movable steel bar support unit (4) to move are installed between the diameter detection unit (6) and the base (1).

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