CN211824175U - Device for measuring elongation of reinforcing steel bar - Google Patents

Abstract

The utility model provides a device for measuring the elongation of steel bars, comprising a base, bases arranged at both ends of the base, and a clamping device installed on the base for fixing steel bars. The base is a rectangular plate-like structure, and the base is symmetrical It is installed at both ends of the base, and the middle part of the upper end of the base is provided with an installation groove, and the clamping device is fixedly arranged in the installation groove. The device fixes the steel bar through the clamping seat, which improves the stability of the steel bar when it is broken. When the vernier caliper is touched, it will not cause obvious movement; the screw controls the movement of the clamping seat, which is convenient for pushing the steel bar to close; the vernier caliper is fixed in the On the upper end of the clamping device, after the steel bar is fixed, the vernier caliper is lowered to measure the steel bar. The use of the device can improve the stability of the measurement after the steel bar is broken, thereby improving the accuracy of the measurement data, and the operation is simple and convenient.

Description

A device for measuring the elongation of steel bars

technical field

The utility model relates to the technical field of engineering building materials detection, in particular to a device for measuring the elongation of steel bars.

Background technique

The elongation after fracture is required to be tested in the mechanical properties of steel bars. "Steel for Reinforced Concrete Part 1: Hot-Rolled Round Bar" GB1499.1-2017 stipulates that the elongation after fracture of HPB300 rebar is greater than or equal to 25%; "Steel for Reinforced Concrete Part 2: Hot-rolled ribbed rebar" GB1499. 2-2018 stipulates that the elongation of HRB400E steel bar after fracture must be greater than or equal to 16%.

The existing test is to first leave a gauge mark on the surface of the steel bar, then after the steel bar is broken, place the steel bar flat on the operating table and splicing it together. After the splicing is completed visually, touch the gauge mark with a vernier caliper to measure the length, and finally calculate the length. Elongation. Most of the steel bars are cylinders. Since the two ports after the steel bars are broken are uneven, if the steel bars are not bound when they are spliced, when the vernier caliper is used to measure the elongation, the steel bars will be easily rolled and unstable, so that the splicing cannot be performed. strict, affecting the accuracy of the measurement data.

Utility model content

The technical problem solved by the present invention is to provide a device for measuring the elongation of steel bars, so as to solve the problems raised in the above background technology.

The technical problem solved by the utility model is realized by the following technical solutions: a device for measuring the elongation of steel bars, comprising a base, a base arranged at both ends of the base, and a clamping device installed on the base for fixing the steel bars, so the The base is a rectangular plate-like structure, the base is symmetrically installed at both ends of the base, the middle part of the upper end of the base is provided with an installation groove, and the clamping device is fixedly arranged in the installation groove;

The clamping device comprises a guide plate and a rotating seat installed in the installation groove, a clamping seat arranged on the guide plate for sliding connection, and a screw thread connected with the clamping seat, and the two ends of the screw rod are respectively rotatably connected with the rotating seat, The screw rod penetrates through the corresponding screw hole at the lower end of the clamping seat and is threadedly connected with the clamping seat.

The clamping seat is provided with two groups and is symmetrically arranged on the guide plate. The clamping seat includes a sliding seat connected with the screw thread, a positioning seat arranged on the sliding seat, and a clamping component arranged on one side of the positioning seat to fix the steel bar. There is a V-shaped groove in the middle of the positioning seat for placing steel bars.

As a further solution of the present invention, a guide rod is installed vertically on the upper end of the rotating seat, and a scale assembly is slidably connected to the guide rod, and the scale assembly includes a benchmark rod slidably installed on the guide rod and a In the vernier caliper, both ends of the benchmark rod are sleeved on the guide rod for sliding connection, and the outer end of the benchmark rod is sleeved on the guide rod with a tightening bolt for fixing; the back of the vernier caliper is provided with a collar, and the vernier caliper is slidably connected on the benchmark rod through the collar.

As a further scheme of the present invention: the guide plate is a double-group parallel structure, the guide plate is installed horizontally at both ends of the installation groove, the installation groove is located between the guide plates on both sides to install a rotating seat, and the guide plate and the rotating seat are fixed on the base by screws. in the mounting slot of the seat.

As a further solution of the present invention, the upper end of the guide plate is slidably provided with a storage plate, and the storage plate is provided with a V-shaped groove corresponding to the storage of steel bars.

As a further scheme of the present utility model: the screw is provided with a first thread body and a second thread body, the first thread body and the second thread body are symmetrically arranged about the middle of the screw rod, and the first thread body and the second thread body are respectively aligned with the positioning Seat threaded connection.

As a further solution of the present invention, two ends of the sliding seat are provided with sliding grooves corresponding to the guide plate, and the sliding seat is clamped on the guide plate through the sliding grooves and is slidably connected.

As a further solution of the present utility model: the clamping assembly includes a clamping rod disposed on the side end of the positioning seat, a sleeve sleeved on the clamping rod, and a pressing plate connected on one side of the sleeve, and the upper end of the clamping rod is provided with an external Threaded, the clamping rod is connected with a tightening nut at the threaded part.

As a further solution of the present invention, the lower end of the pressing plate is provided with an arc-shaped groove corresponding to the steel bar.

Compared with the prior art, the beneficial effects of the utility model are: the device fixes the steel bars through the clamping seat, improves the stability of the steel bars when they are broken, and does not cause obvious movement when the vernier caliper is detected by touching them; The movement of the clamping seat is controlled to facilitate pushing the rebar to close; the vernier caliper is fixed on the upper end of the clamping device, and after the rebar is fixed, the vernier caliper is lowered to measure the rebar. The use of the device can improve the stability of the measurement after the steel bar is broken, thereby improving the accuracy of the measurement data, and the operation is simple and convenient.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the side view structure schematic diagram of the utility model;

3 is a schematic diagram of the screw installation structure of the present invention;

Fig. 4 is the side view structure schematic diagram of the clamping seat of the present invention;

FIG. 5 is a schematic side view of the structure of the vernier caliper of the present invention.

Detailed ways

In order to make the realization technical means, creation features, achievement goals and effects of the present invention easy to understand and understand, the present invention will be further described below with reference to the specific figures.

As shown in Figures 1 to 5,

This embodiment provides a device for measuring the elongation of steel bars, including a base 1, a base 2 disposed at both ends of the base 1, and a clamping device installed on the base 2 for fixing the steel bars, and the base 1 is a rectangular plate The base 2 is symmetrically installed on both ends of the base 1, the middle part of the upper end of the base 2 is provided with an installation groove, and the clamping device is fixedly arranged in the installation groove; the clamping device includes a guide plate installed in the installation groove 11 and the rotating base 12, the clamping base 3 that is slidably connected to the guide plate 11, and the screw 13 that is threadedly connected to the clamping base 3. The screw hole corresponding to the lower end of the seat 3 is threadedly connected with the clamping seat 3. The outer end of the rotating seat 12 where the screw rod 13 is located at one end of the base 2 is provided with a handle 14, and the handle 14 controls the rotation of the screw rod 13; the clamping seat 3 is provided with a handle 14. There are two sets and are symmetrically arranged on the guide plate 11. The clamping seat 3 includes a sliding seat 31 threadedly connected with the screw 13, a positioning seat 32 arranged on the sliding seat 31, and a clamping seat 32 arranged on the side of the positioning seat 32 to fix the steel bar 4. assembly, a V-shaped groove is provided in the middle of the positioning seat 32 for placing the steel bar 4 .

In this embodiment, a guide rod 21 is vertically installed on the upper end of the rotating base 12 , and a scale assembly is slidably connected to the guide rod 21 . On the vernier caliper 23, the two ends of the benchmark rod 22 are sleeved on the guide rod 21 for sliding connection, and the outer end of the benchmark rod 22 is sleeved on the guide rod 21 with a tightening bolt 24 for fixing, so as to limit the lifting height of the benchmark rod 22; the vernier caliper The back of 23 is provided with a collar 25 , and the vernier caliper 23 is slidably connected on the benchmark 22 through the collar 25 . Specifically, after the steel bar 4 is fixed on the clamping base 3, the benchmark 22 is lowered to an appropriate position, and the vernier caliper 23 is adjusted to measure the steel bar 4, which is beneficial to improve the measurement accuracy. The angle offset at time leads to inaccurate detection data.

In this embodiment, the guide plates 11 are of two parallel structures. The guide plates 11 are installed horizontally at both ends of the installation slot. The installation slot is located between the guide plates 11 on both sides to install the rotating seat 12. The guide plate 11 and the rotating seat 12 are fixed and installed by screws. in the mounting slot of the base 2. The upper end of the guide plate is slidably provided with a storage plate 33. The storage plate 33 is located between the two sets of sliding seats 31 on the guide plate 11. The storage plate 33 is easy to move to the breaking point of the steel bar. V-groove. The screw 13 is provided with a first threaded body 15 and a second threaded body 16, the first threaded body 15 and the second threaded body 16 are symmetrically arranged about the middle of the screw 13, and the first threaded body 15 and the second threaded body 16 are respectively connected to the positioning seat. 32 threaded connection, when the screw 13 rotates, the synchronous movement of the clamping base 3 in the opposite or opposite directions is controlled. Two ends of the sliding seat 31 are provided with sliding grooves 34 corresponding to the guide plate 11 , and the sliding seat 31 is clamped on the guide plate 11 through the sliding grooves 34 and is slidably connected.

In this embodiment, the clamping assembly includes a clamping rod 35 disposed on the side end of the positioning seat 32, a sleeve 36 sleeved on the clamping rod 35, and a pressing plate 37 connected to one side of the sleeve 36. The upper end of the clamping rod 35 An external thread is provided, and the clamping rod 35 is connected with a tightening nut 38 at the threaded portion. Specifically, the pressure plate 37 is slidably connected to the clamping rod 35 through the sleeve 36 , and the height of the sleeve 36 is restricted by the rotation of the tightening nut 38 , so that the pressure plate 37 is pressed on the steel bar 4 for fixing. The lower end of the pressing plate 37 is provided with an arc groove corresponding to the steel bar 4 , which is convenient for fixing the steel bar 4 .

The working principle of the utility model is as follows: the broken steel bars 4 are placed on the clamping seats 3 at both ends of the screw rod 13 respectively, the steel bars 4 are put into the V-shaped grooves of the positioning seat 32, and the height of the pressing plate 37 is limited by adjusting the tightening nut 38 Rotate the handle 14 to control the clamping seat 3 on the screw 13 to move toward each other, and the fracture of the steel bar 4 is closed on the storage plate 33; after the benchmark 22 is lowered to the appropriate position, move the vernier caliper 23 to measure the fracture of the steel bar 4 after elongation.

The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention The new model will also have various changes and improvements, which all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. The utility model provides a measure reinforcing bar elongation device, includes the base, sets up the base at base both ends and installs the clamping device who is used for fixed reinforcing bar on the base, its characterized in that: the base is of a rectangular plate-shaped structure, the bases are symmetrically arranged at two ends of the base, the middle part of the upper end of the base is provided with an installation groove, and the clamping device is fixedly arranged in the installation groove;

the clamping device comprises a guide plate and a rotating seat which are arranged in the mounting groove, a clamping seat which is arranged on the guide plate and is in sliding connection with the guide plate, and a screw rod which is in threaded connection with the clamping seat, wherein two ends of the screw rod are respectively in rotating connection with the rotating seat, the screw rod penetrates through a screw hole corresponding to the lower end of the clamping seat and is in threaded connection with the clamping seat, a handle is arranged at the outer end of the rotating seat, which is positioned at one end of the base, of the screw rod;

the clamping seat is provided with two groups of clamping seats which are symmetrically arranged on the guide plate, each clamping seat comprises a sliding seat in threaded connection with the screw, a positioning seat arranged on the sliding seat and a clamping assembly arranged on one side of the positioning seat for fixing the steel bars, and a V-shaped groove is formed in the middle of the positioning seat and used for placing the steel bars.

2. The apparatus for measuring elongation of reinforcing bar according to claim 1, wherein: the upper end of the rotating seat is vertically provided with a guide rod, the guide rod is connected with a scale assembly in a sliding manner, the scale assembly comprises a mark post which is arranged on the guide rod in a sliding manner and a vernier caliper which is arranged on the mark post, two ends of the mark post are sleeved on the guide rod in a sliding manner, and the outer end of the mark post, which is sleeved on the guide rod, is provided with a screwing bolt for fixing; the back of the vernier caliper is provided with a lantern ring, and the vernier caliper is connected on the marker post in a sliding mode through the lantern ring.

3. The apparatus for measuring elongation of reinforcing bar according to claim 1, wherein: the guide plates are of a double-group parallel structure, the guide plates are transversely arranged at two ends of the mounting groove, the mounting groove is located between the guide plates on two sides, the rotating seat is mounted between the guide plates on two sides, and the guide plates and the rotating seat are fixedly mounted in the mounting groove of the base through screws.

4. A device for measuring the elongation of reinforcing bars according to claim 3, characterized in that: the upper end position of baffle slides and is equipped with the storage plate, be equipped with the V type groove that the corresponding reinforcing bar was deposited on the storage plate.

5. The apparatus for measuring elongation of reinforcing bar according to claim 4, wherein: the screw rod is provided with a first thread body and a second thread body, the first thread body and the second thread body are symmetrically arranged around the middle of the screw rod, and the first thread body and the second thread body are respectively in threaded connection with the positioning seat.

6. The apparatus for measuring elongation of reinforcing bar according to claim 5, wherein: the sliding seat is characterized in that sliding grooves are formed in the two ends of the sliding seat corresponding to the guide plates, and the sliding seat is clamped on the guide plates through the sliding grooves in a sliding connection mode.

7. The apparatus for measuring elongation of reinforcing bar according to claim 6, wherein: the clamping assembly comprises a clamping rod arranged at the side end of the positioning seat, a sleeve sleeved on the clamping rod, and a pressing plate connected to one side of the sleeve, wherein an external thread is arranged at the upper end part of the clamping rod, and the clamping rod is connected with a screwing nut at the threaded part.

8. The apparatus for measuring elongation of reinforcing bar according to claim 7, wherein: the lower end of the pressing plate is provided with an arc-shaped groove corresponding to the reinforcing steel bar.

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