CN213986056U

CN213986056U - Concrete resilience test mechanism

Info

Publication number: CN213986056U
Application number: CN202022800016.4U
Authority: CN
Inventors: 刘要强; 王聪; 毛彦伟
Original assignee: Henan Zhongfeng Engineering Testing Co ltd
Current assignee: Henan Zhongfeng Engineering Testing Co ltd
Priority date: 2020-11-28
Filing date: 2020-11-28
Publication date: 2021-08-17
Anticipated expiration: 2030-11-28

Abstract

The utility model discloses a concrete resilience accredited testing organization, shell including the tube-shape, the shell is inside to slide along the axis and to set up the impact hammer, the tip of shell runs through and is provided with the striking section of thick bamboo that is used for the impact hammer striking, there is the second elastic component along the axis connection between impact hammer and the striking section of thick bamboo, the inside displacement sensor who detects the impact hammer displacement volume that is provided with of shell, the inside drive mechanism who is used for increasing to pull the motion of impact hammer that sets up of shell, this concrete resilience accredited testing organization need not artifical pulling impact hammer, and the test can be accomplished with the barrel face of test of contradicting during the use directly, guarantees the measuring accuracy.

Description

Concrete resilience test mechanism

Technical Field

The utility model relates to a concrete resilience test technical field specifically is a concrete resilience accredited testing organization.

Background

Concrete resiliometer is when testing, it is perpendicular with the test face to need to guarantee the barrel, in order to guarantee the striking direction perpendicular to test face of striking hammer, current resiliometer front end has a telescopic test rod, a be used for hammering the striking hammer backward movement, and when removing to the rearmost end, inside pine send out the mechanism can send out the striking hammer pine automatically, in order to realize the purpose of striking hammer striking front end, this is required when operating, the staff need keep barrel perpendicular to test face extrusion forward all the time, this dynamic in-process, if the skew appears in the angle of feeding, or the messenger is sent out to final pine, barrel axis and test face out of plumb, all can cause final test result to have the error.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a concrete resilience accredited testing organization, need not artifical pulling impact hammer, directly can accomplish the test with the barrel face of testing of contradicting during the use, guarantee the measuring accuracy, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a concrete resilience accredited testing organization, includes the shell of tube-shape, the shell is inside to slide along the axis and to set up the striking hammer, the tip of shell runs through and is provided with the striking section of thick bamboo that is used for the striking hammer striking, be connected with the second elastic component along the axis between striking hammer and the striking section of thick bamboo, the inside displacement sensor who detects the striking hammer displacement volume that is provided with of shell, the inside setting of shell is used for increasing the drive mechanism who pulls the striking hammer motion.

As a preferred technical solution of the present invention, the traction mechanism includes a central shaft and a clamping member, the central shaft is coaxially and rotatably disposed inside the housing, the clamping member includes two sets of opening and closing members connected by a rotating shaft, and a telescopic rod is connected between free ends of the two sets of opening and closing members, the clamping member is fixedly mounted relative to the impact hammer, when the two sets of opening and closing members of the clamping member are closed into a circular ring, screw threads engaged with each other are disposed between an inner annular wall surface of the clamping member and the central shaft, an end portion of the central shaft is provided with a motor, and when the two sets of opening and closing members of the clamping member are opened, the threads of the inner annular wall are disengaged from the threads of the central shaft;

through the telescopic link operation, realize the closure and the opening of two sets of opening and shutting pieces, when closed, the holder is equivalent to the screw nut who meshes in the axis outside, with the axis meshing that plays the lead screw effect, drives the motion of striking hammer, and after reaching the assigned position, the holder is opened, and striking hammer strikes a striking section of thick bamboo under the effect of second elastic component.

As a preferred technical solution of the present invention, one end portion of the middle shaft extends to the outside of the impact cylinder, and the other end of the middle shaft is a spline shaft, the end portion of the output shaft of the motor is provided with a spline sleeve, the spline shaft is inserted into the spline sleeve, and a first elastic member is arranged between the spline shaft and the spline sleeve along the axis, the middle shaft is externally rotated to install the turntable, the inside of the housing is provided with a contact switch, the contact switch is electrically connected with the control unit of the motor, and when the middle shaft is all extruded into the impact cylinder, the turntable touches the contact switch;

through the integral key shaft design, make the axis can keep power transmission when axial motion, during the use, only when the axis is pressed into striking a section of thick bamboo in, represent striking a section of thick bamboo front end and laminate good test surface, the motor side can drive the striking hammer and move and strike this moment, avoids the place ahead striking section of thick bamboo position incorrect or the empty striking when not contacting the test surface.

As a preferred technical scheme of the utility model, the inner wall of the shell is provided with a slide rail along the axis, and the side wall of the impact hammer is provided with a chute which is slidably mounted with the slide rail;

ensure that the impact hammer can not axially rotate during movement.

As a preferred technical solution of the present invention, the displacement sensor is a grating sensor;

the testing precision is improved, and the movement and displacement data of the impact hammer are accurately recorded.

Compared with the prior art, the beneficial effects of the utility model are that: this concrete resilience accredited testing organization adopts and increases the drive mechanism who independently pulls the motion of impact hammer inside the shell, makes resilience accredited testing organization when using, need not to push away before manual gripping to guarantee that the impact hammer is when the striking, the impact direction is perpendicular with the test surface direction, guarantees measuring result's accuracy.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a sectional view of the present invention;

fig. 3 is a schematic view of the installation of the contact switch of the present invention;

fig. 4 is a schematic view of the traction mechanism of the present invention.

In the figure: the device comprises a shell 1, a striking hammer 2, a traction mechanism 3, a 301 middle shaft, a 302 turntable, a 303 clamping piece, a 304 telescopic rod, a 305 first elastic piece, a 306 motor, a 4 striking barrel, a 5 second elastic piece, a 6 displacement sensor and a 7-contact switch.

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.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a concrete resilience accredited testing organization, includes the shell 1 of tube-shape, and 1 inside slides along the axis and sets up impact hammer 2 of shell, and the tip of shell 1 runs through and is provided with an impact section of thick bamboo 4 that is used for impact hammer 2 striking, and impact hammer 2 and impact between the section of thick bamboo 4 along the axis be connected with second

elastic component

5, and 1 inside displacement sensor 6 that is provided with the detection impact hammer 2 displacement volume of shell, 1 inside setting of shell is used for increasing the drive mechanism 3 who draws 2 movements of impact hammer.

The traction mechanism 3 comprises a middle shaft 301 and a clamping piece 303, the middle shaft 301 is coaxially and rotatably arranged inside the shell 1, the clamping piece 303 comprises two groups of opening and closing pieces connected through a rotating shaft, a telescopic rod 304 is connected and arranged between the free ends of the two groups of opening and closing pieces, the clamping piece 303 and the impact hammer 2 are relatively fixedly installed, when the two groups of opening and closing pieces of the clamping piece 303 are closed into a circular ring, screw threads meshed with each other are arranged between the surface of the inner ring wall of the clamping piece 303 and the middle shaft 301, a motor 306 is arranged at the end part of the middle shaft 301, and when the two groups of opening and closing pieces of the clamping piece 303 are opened, the threads of the inner ring wall are;

through the operation of telescopic link 304, realize the closure and the opening of two sets of opening and shutting pieces, when closing, holder 303 is equivalent to the screw nut who meshes in axis 301 outside, meshes with axis 301 that plays the lead screw effect, drives striking hammer 2 motion, and after reaching the assigned position, holder 303 is opened, and striking hammer 2 strikes a striking section of thick bamboo 4 under the effect of second elastic component 5.

One end part of the middle shaft 301 extends to the outside of the impact barrel 4, the other end of the middle shaft 301 is a spline shaft, the end part of an output shaft of the motor 306 is provided with a spline sleeve, the spline shaft is inserted into the spline sleeve, a first elastic piece 305 is arranged between the spline shaft and the spline sleeve along the axial line, the outer part of the middle shaft 301 is rotatably provided with a turntable 302, the inner part of the shell 1 is provided with a contact switch 7, the contact switch 7 is electrically connected with a control unit of the motor 306, and when the middle shaft 301 is completely extruded into the impact barrel 4, the turntable 302 touches the contact switch 7;

through the integral key shaft design, make axis 301 can keep power transmission when axial motion, during the use, only when axis 301 is pressed into striking a section of thick bamboo 4 in, represent striking a 4 front end and laminate good test surface, motor 306 can drive striking hammer 2 and move and strike this moment, avoids the place ahead to strike a 4 position incorrect or empty striking when not contacting the test surface.

The inner wall of the shell 1 is provided with a slide rail along the axis, and the side wall of the impact hammer 2 is provided with a slide groove which is slidably arranged with the slide rail;

ensuring that the impact hammer 2 does not axially rotate during movement.

The displacement sensor 6 is a grating sensor;

the testing precision is improved, and the movement and displacement data of the impact hammer 2 are accurately recorded.

When in use: vertically attaching one end, positioned outside the shell 1, of the impact barrel 4 to a test surface, pushing the middle shaft 301 backwards at the moment to drive the turntable 302 to touch the contact switch 7, so that the motor 306 is controlled to drive the middle shaft 301 to rotate, the impact hammer 2 is driven to move under the action of the clamping piece 303 and the middle shaft 301, the second elastic piece 5 is deformed to store energy, when the impact hammer 2 moves to a set position, the telescopic rod 304 extends, the clamping piece 303 is opened, the impact hammer 2 impacts the impact barrel 4 under the action of the second elastic piece 5, and then the displacement sensor 6 detects and records displacement data of the impact hammer 2;

during the use, only need with 1 direct perpendicular to test surface laminating of shell can, need not to press, when avoiding traditional resiliometer to use, the problem that the artifical process axis direction of pushing forward rocked.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a concrete resilience accredited testing organization, includes shell (1) of tube-shape, its characterized in that: the utility model discloses a striking hammer (2) of casing (1) inside sets up along the axis slip striking hammer (2), the tip of casing (1) runs through and is provided with an striking section of thick bamboo (4) that is used for striking hammer (2) striking, be connected with second elastic component (5) along the axis between striking hammer (2) and an striking section of thick bamboo (4), casing (1) inside is provided with displacement sensor (6) that detect striking hammer (2) displacement volume, casing (1) inside sets up and is used for increasing traction mechanism (3) of drawing striking hammer (2) motion.

2. The concrete rebound testing mechanism of claim 1, wherein: the traction mechanism (3) comprises a middle shaft (301) and clamping pieces (303), the middle shaft (301) is coaxially and rotatably arranged inside the shell (1), the clamping pieces (303) comprise two groups of opening and closing pieces connected through a rotating shaft, a telescopic rod (304) is connected between the free ends of the two groups of opening and closing pieces, the clamping pieces (303) and the impact hammer (2) are fixedly installed relatively, when the two groups of opening and closing pieces of the clamping pieces (303) are closed into a circular ring, screw threads meshed with each other are arranged between the surface of the inner ring wall of the clamping pieces (303) and the middle shaft (301), a motor (306) is arranged at the end part of the middle shaft (301), and when the two groups of opening and closing pieces of the clamping pieces (303) are opened, the threads of the inner ring wall are separated from the threads of the middle shaft (301).

3. The concrete rebound testing mechanism of claim 2, wherein: one end part of the middle shaft (301) extends to the outside of the impact barrel (4), the other end of the middle shaft (301) is a spline shaft, the end part of an output shaft of the motor (306) is provided with a spline sleeve, the spline shaft is inserted into the spline sleeve, a first elastic piece (305) is arranged between the spline shaft and the spline sleeve along the axis, the middle shaft (301) rotates outside to install the turntable (302), the shell (1) is internally provided with a contact switch (7), the contact switch (7) is electrically connected with a control unit of the motor (306), and when the middle shaft (301) is completely extruded into the impact barrel (4), the turntable (302) touches the contact switch (7).

4. The concrete rebound testing mechanism of claim 1, wherein: the inner wall of shell (1) sets up the slide rail along the axis, striking hammer (2) lateral wall sets up the spout with slide rail slidable mounting.

5. The concrete rebound testing mechanism of claim 1, wherein: the displacement sensor (6) is a grating sensor.