CN111122372B

CN111122372B - Concrete resiliometer calibrating device

Info

Publication number: CN111122372B
Application number: CN202010069224.3A
Authority: CN
Inventors: 孟高建; 孙钦密; 焦江涛; 周韶波; 王�华; 王沛; 徐曼可
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2022-02-22
Anticipated expiration: 2040-01-21
Also published as: CN111122372A

Abstract

The invention relates to a concrete resiliometer calibrating device, which comprises a calibrating support, wherein a cylinder positioning structure is arranged on the calibrating support, the cylinder positioning structure comprises a conical positioning hole which is large in top and small in bottom and is used for being in positioning fit with a conical tip part of a cylinder, an elastic striking rod positioning support platform is arranged on the calibrating support and is arranged on the lower side of the cylinder positioning structure, a positioning support groove which is concentrically arranged with the conical positioning hole and is matched with the bottom of the elastic striking rod in a supporting and positioning fit mode is arranged at the top of the elastic striking rod positioning support platform, a sliding block is assembled on the calibrating support in an up-and-down direction guiding and moving mode, a stop rod which is hinged to the sliding block, is provided with a hinge axis and extends in the up-and-down direction and is used for being clamped in an annular groove at the end of a spring, a dynamometer or a standard weight is connected to the sliding block, and a displacement measuring device for detecting the displacement distance of the sliding block is also arranged on the calibrating support. The invention solves the technical problem that the concrete rebound apparatus needs to be completely disassembled to waste time and labor when the concrete rebound apparatus is calibrated in the prior art.

Description

Concrete resiliometer calibrating device

Technical Field

The invention relates to a concrete resiliometer calibrating device in the field of instrument calibration.

Background

The concrete resiliometer is a detection device for detecting the strength of various concrete structures such as building members, bridge members and the like. The structure of the resiliometer for project supervision is as disclosed in Chinese patent CN110308062A, which comprises a barrel and an impact hammer arranged in the barrel in a sliding manner, wherein a graduated scale, a button and a pointer slide block sliding along the graduated scale are arranged on the inner wall of the barrel, a central guide rod penetrates through the impact hammer, one end of the central guide rod is sleeved with an impact rod extending into the outside of the barrel, a guide flange and a firing mechanism are fixedly arranged at the other end of the central guide rod, an impact tension spring is sleeved on the outer side of the impact rod and is a tension spring connected with the impact hammer, a pressure spring is arranged at the tail end of the central guide rod, a sealing head is in threaded connection with the end of the barrel, one end of the tension spring is fixed with an end head, an annular groove is arranged on the end of the tension spring, and a retaining ring which is of a two-piece structure is arranged between the sealing head and the annular groove.

When the sealing head is in threaded connection with the barrel, the check ring is clamped in the annular groove, so that the end head is fixed, when the sealing head is used specifically, the central guide rod compresses the pressure spring, the pressure spring enters a preparation state before testing, the central guide rod is unlocked through the button, the central guide rod drives the impact rod to impact the surface of concrete, after impact, the impact rod is retracted into the barrel under the action of a reaction force, the impact hammer is hung by the hook hung at the center, the impact hammer is provided with a tensile impact tension spring, the strength of the concrete is fed back according to the final moving distance of the impact hammer, and the key factor determining the moving distance of the impact hammer is the impact tension spring, so that the elasticity of the impact tension spring needs to be calibrated regularly.

In the prior art, the concrete rebound apparatus is calibrated in such a way that the concrete rebound apparatus is completely disassembled, the springing tension spring is taken out, a standard weight is mounted on the springing tension spring, and the elasticity of the springing tension spring is calibrated according to the extension of the springing tension spring. This kind of calibration mode with concrete resiliometer is torn open completely for it is very troublesome to the calibration of bullet hitting the extension spring among the prior art, all need to tear apart the concrete resiliometer at every turn, and the equipment of concrete resiliometer is carried out to the completion of calibration, and the loaded down with trivial details complicacy of process of dismouting concrete resiliometer.

Disclosure of Invention

The invention aims to provide a concrete resiliometer calibrating device, which aims to solve the technical problem that the concrete resiliometer needs to be completely disassembled to waste time and labor when the concrete resiliometer is calibrated in the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the utility model provides a concrete resiliometer calibrating device, includes the calibration support, be provided with on the calibration support and supply the barrel location structure that the barrel vertical location of treating the calibration concrete resiliometer was placed, barrel location structure include big-end-up be used for with the awl point portion of barrel divides location fit's toper locating hole, be provided with on the calibration support in barrel location structure's downside and hit a pole location brace table, the top of hitting a pole location brace table be provided with the toper locating hole arrange with one heart with hit a pole bottom adaptation support location fit's location support groove, along upper and lower direction removal on the calibration support be equipped with the slider, articulated on the slider have the articulated axis along the shelves pole that is used for blocking in the ring channel of spring end that extends from top to bottom, be connected with dynamometer or standard weight on the slider, still be provided with on the calibration support and be used for detecting the displacement measurement device of slider displacement distance.

Be provided with the scale pointer of horizontal extension on the shelves pole, displacement measuring device includes the dipperstick that is located the slider right side of vertical arrangement, is provided with the measurement scale on the dipperstick.

The two gear rods are arranged in the front and back and are respectively clamped on the front side and the back side of the annular groove.

The calibration support comprises a support base, a left side supporting rod and a right side supporting rod which are arranged at left and right intervals are fixedly arranged on the support base, the barrel positioning structure is arranged on the left side supporting rod, and the displacement measuring device is arranged on the right side supporting rod.

The cylinder positioning structure is arranged on the right side of the left side supporting rod, the left side of the left side supporting rod is assembled with the dynamometer in a guiding and moving mode along the up-down direction, the dynamometer is connected with the sliding block through a U-shaped pull rope, and a pull rope channel for the pull rope to penetrate through along the left-right direction and a reversing pulley for the pull rope to pass through the reversing direction are arranged on the left side supporting rod.

The invention has the beneficial effects that: when the concrete resiliometer calibrating device is used, the concrete resiliometer is calibrated without completely disassembling the concrete resiliometer and taking out the impact tension spring, when in specific operation, only the sealing head on the cylinder body of the concrete resiliometer is needed to be disassembled, the concrete resiliometer is vertically arranged on the cylinder body positioning structure, the small end of the concrete resiliometer faces downwards, after the sealing head is disassembled, the end head of the tension spring at one end of the impact tension spring is a free end, the impact hammer at the other end of the impact tension spring is blocked by the cylinder body of the concrete resiliometer and cannot move downwards, the upper end of the impact tension spring is a fixed end, the lower end of the impact tension spring is a free end, only one end of the impact rod is guided due to the disassembly of the sealing head, the extending end of the impact rod is supported and positioned and matched through the positioning support groove, the vertical posture of the impact rod is ensured, and thus the impact tension spring can be prevented from being stretched, the excessive friction force is generated between the end head of the tension spring and the striking rod, and the positioning support groove also plays a role in limiting the downward movement of the striking rod, so that the influence on the calibration of the striking tension spring caused by the downward movement of the striking rod is avoided. When concrete resiliometer was packed into to the toper locating hole, rotate the pin, the pin is dodged the extension spring end, after concrete resiliometer packed into in place, rotate the pin to the ring channel of extension spring end, just so can realize the pin and pass power to the extension spring end, to the slider through dynamometer or standard weight, and then apply the pulling force to the extension spring end, it is tensile to hit the extension spring to bounce, displacement measurement device through slider displacement distance measures the tensile length of the extension spring that hits of hitting, hit the extension spring to bounce in proper order and calibrate, need not dismantle concrete resiliometer completely, need not hit the extension spring with bouncing and take out and just can realize calibrating concrete resiliometer, concrete resiliometer's calibration complexity has been simplified greatly, calibration efficiency has been improved.

Drawings

FIG. 1 is a schematic diagram of the construction of a concrete resiliometer according to the present invention;

FIG. 2 is an enlarged view at A of FIG. 1;

FIG. 3 is a schematic diagram of the structure of the concrete rebound apparatus calibration device according to the present invention;

FIG. 4 is a state diagram of the use of FIG. 3;

fig. 5 is a schematic view of the left side support bar of fig. 4 in cooperation with the slide and the load cell.

Detailed Description

The concrete resiliometer calibrating device disclosed by the invention is shown in the figures 1-5: before explaining the structure of the concrete resiliometer calibrating device, a simple structural introduction is firstly carried out on the concrete resiliometer in the prior art, as shown in fig. 1, the concrete resiliometer in the prior art comprises a cylinder body 10 with a conical tip part 9 at the lower end, a sealing head 8 is connected with the lower end of the cylinder body through threads, a reset spring 1 and a striking rod 4 are arranged in the cylinder body, the lower end of the striking rod 4 penetrates out from the lower side of the sealing head 8 in a guiding way, a striking tension spring 3 is sleeved on the striking rod, an impact hammer 2 is fixed at the upper end of the striking tension spring 3, a tension spring end head 7 is fixed at the lower end of the striking tension spring, an annular groove 6 is arranged at the periphery of the end tension spring 7, the sealing head 8 is connected with the lower end of the cylinder body through threads, a retainer ring 5 is arranged between the annular groove 6 of the tension spring end head and the sealing head, the retainer ring is of a two-piece structure, when the tension spring end head is fixed, the retainer ring is clamped in the annular groove, and then the sealing head is screwed, the sealing head limits the periphery of the check ring, and the check ring is in blocking fit with the end part of the cylinder body on the upper side of the check ring, so that the lower end of the tension spring end head is fixed, namely, when the concrete rebound apparatus is normally used, the tension spring end head is a fixed end, and the impact hammer is a free end. When the impact rod rebounds, the impact hammer can be driven to stretch the impact spring. The concrete resiliometer belongs to the prior art, and the concrete structure and the working principle are not detailed.

Concrete resiliometer calibrating device includes the calibration support, the calibration support includes the support base, interval arrangement's left side bracing piece 11 and right side bracing piece 15 about fixed arrangement has on the support base, the right side of left side bracing piece 11 is provided with the barrel location structure that the barrel vertical location that supplies the concrete resiliometer of treating the calibration placed, in this embodiment, barrel location structure includes big-end-up's the taper locating hole 13 that is used for and the taper point portion branch location fit of barrel, barrel location structure is still including setting up in the taper locating hole upside with the cylindricality part location fit's of barrel cylindricality locating hole 12, the cylindricality locating hole is arranged with toper coaxial line locating hole.

An elastic striking rod positioning support table 16 is arranged on the calibration support and on the lower side of the cylinder positioning structure, and a positioning support groove 17 which is concentrically arranged with the conical positioning hole and is matched with the bottom of the elastic striking rod in a supporting and positioning mode is arranged at the top of the elastic striking rod positioning support table. The left side bracing piece is also provided with a sliding block 20 which is guided to move along the up-down direction, the sliding block is hinged with two stop rods 19 which are arranged front and back, the hinge axes of the two stop rods are arranged along the up-down direction, and the two stop rods are respectively used for being clamped into the front side and the back side of the annular groove 6 of the end of the tension spring. One of the bars 19 is provided with a horizontally arranged scale pointer 18. Be provided with the displacement measurement device who is used for detecting slider displacement distance on the right side bracing piece 15, displacement measurement device includes vertical arrangement's the dipperstick 14 that is located the slider right side, is provided with the measurement scale on the dipperstick.

The left side of the left side support rod is provided with a dynamometer 22 which is guided and moved along the up-down direction, the dynamometer is connected with a slide block through a U-shaped pull rope, and the left side support rod is provided with a pull rope channel 25 for the pull rope to penetrate along the left-right direction and a reversing pulley 24 for the pull rope to change direction around the warp. Be equipped with the locking screw 21 that the axis extends along left right direction on the dynamometer, when screwing up locking screw 21, locking screw pushes up on the left side bracing piece, can realize the fixed of position about the dynamometer, and during the pine locking screw of unscrewing, the dynamometer can reciprocate.

When the concrete rebound apparatus is calibrated, only the sealing head 8 at the lower end of the cylinder body of the concrete rebound apparatus needs to be detached, the two-piece retainer ring 5 is taken away, the tension spring end 7 is a free end, the front and the rear two stop rods are respectively turned to the front side and the rear side, the stop rods are allowed to avoid the tension spring end, the concrete rebound apparatus after the sealing head is detached is loaded into the cylindrical positioning hole and the conical positioning hole from top to bottom, and the cylinder body is in a vertical posture through the conical positioning hole and the conical positioning hole. The lower end of the elastic striking rod of the concrete resiliometer is abutted against the positioning support groove of the elastic striking rod positioning support table, and the positioning support groove not only ensures the vertical posture of the elastic striking rod, but also can limit the downward movement of the elastic striking rod. The catch bar is shifted to the ring groove of extension spring end for two catch bars block both sides around the ring groove respectively, and slider accessible catch bar transmits the pulling force to the extension spring end this moment, and the rebound dynamometer, to applying the pulling force to the extension spring, the jump bit of extension spring upper end is spacing and become the stiff end by the barrel, and the extension spring is stretched, reads out the stay cord length of the extension spring of strikeing through the scale pointer, and the dynamometer shows the pulling force of the extension spring of strikeing, thereby calibrates the extension spring of strikeing.

According to the invention, the whole concrete resiliometer does not need to be completely disassembled, and the concrete resiliometer can be calibrated only by disassembling the two parts, namely the sealing head and the check ring, so that the calibration process is very simple and convenient. In other embodiments of the present invention, the cylindrical positioning hole in the cylinder positioning structure may not be provided; the displacement measuring device can also be a displacement sensor capable of measuring the displacement of the slide block; the number of the stop levers can be only one; the load cell may also be replaced by a standard weight attached to the lower end of the slide.

Claims

1. The utility model provides a concrete resiliometer calibrating device which characterized in that: comprises a calibration support, a cylinder positioning structure for vertically positioning and placing a cylinder of a concrete resiliometer to be calibrated is arranged on the calibration support, the cylinder positioning structure comprises a conical positioning hole which is big at the top and small at the bottom and is used for being in positioning fit with the conical tip part of the cylinder, an elastic striking rod positioning support platform is arranged on the calibration support at the lower side of the cylinder positioning structure, a positioning support groove which is concentrically arranged with the conical positioning hole and is matched with the bottom of the elastic striking rod in a supporting and positioning fit manner is arranged at the top of the elastic striking rod positioning support platform, a slide block is assembled on the calibration support along the up-down direction in a guiding and moving manner, a stop lever which is hinged with a hinge axis and extends along the up-down direction and is used for being clamped in an annular groove at the end of a spring is hinged on the slide block, a displacement measuring device for detecting the displacement distance of the slide block is also arranged on the calibration support, and a scale pointer which extends horizontally is arranged on the stop lever, the displacement measuring device comprises a vertically arranged measuring scale which is arranged on the right side of the sliding block, the measuring scale is arranged on the measuring scale, the two blocking rods are arranged front and back and are respectively used for being clamped on the front side and the back side of the annular groove.

2. The concrete resiliometer calibrating apparatus according to claim 1, wherein: the calibration support comprises a support base, a left side supporting rod and a right side supporting rod which are arranged at left and right intervals are fixedly arranged on the support base, the barrel positioning structure is arranged on the left side supporting rod, and the displacement measuring device is arranged on the right side supporting rod.

3. The concrete resiliometer calibrating apparatus according to claim 2, wherein: the cylinder positioning structure is arranged on the right side of the left side supporting rod, the left side of the left side supporting rod is assembled with the dynamometer in a guiding and moving mode along the up-down direction, the dynamometer is connected with the sliding block through a U-shaped pull rope, and a pull rope channel for the pull rope to penetrate through along the left-right direction and a reversing pulley for the pull rope to pass through the reversing direction are arranged on the left side supporting rod.