CN212228622U

CN212228622U - Concrete test block shock resistance test device

Info

Publication number: CN212228622U
Application number: CN202020920780.2U
Authority: CN
Inventors: 李桂全; 聂健; 张支京; 崔永锋; 杨丽玉; 陈尊兴
Original assignee: Fujian Hangrong Building Materials Technology Co ltd
Current assignee: Fujian Hangrong Building Materials Technology Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2020-12-25
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses a concrete test block shock resistance test device relates to the test block and detects technical field, the utility model overcomes can't realize among the prior art that it is automatic to assemble the steel ball, still need manually assemble the steel ball, just can carry out the shock resistance test's that relapse problem, now proposes following scheme: the electric lifting device comprises a top plate, a vertical column is connected to the bottom of the top plate, a bottom plate is connected to the bottom of the vertical column, an opening is formed in the center of the top plate, a connecting sleeve is arranged at the bottom of the opening, an electric push rod is arranged in a top plate cavity, a flexible end fixedly connected resistance plate of the electric push rod penetrates through the opening and bears a steel ball, a first buffer plate is arranged on the left side of the center of the top plate, a guide slope is arranged on the right side of the top plate, fixed blocks are fixedly connected to the front side and the rear side of the middle of the bottom plate. The utility model discloses a to the automatic assembly of steel ball, alleviateed impact resistance test's work load by a wide margin.

Description

Concrete test block shock resistance test device

Technical Field

The utility model relates to a test block detects technical field, especially relates to a concrete test block shock resistance test device.

Background

The level of impact resistance to compression and impact of concrete is an important aspect in evaluating the dynamic performance of concrete. In airport runways, highway pavements, bridge decks and even modern protection structure projects with impact resistance, explosion resistance and earthquake resistance, higher requirements are put forward on the impact resistance and the pressure impact resistance of concrete.

A concrete bending impact test method is specified in national standard GB/T21120 of cement concrete and mortar synthetic fiber of the people's republic of China: and pasting a strain gauge at the maximum strain position of a tension area on the lower surface of the test piece, pasting an accelerometer on the upper part of the test piece, and connecting the strain gauge and the accelerometer with a dynamic data acquisition system together by using a lead. And a steel base plate is placed at the geometric center point of the surface of the test piece, and a hollow sleeve is placed on the base plate. And placing a drop hammer above the sleeve, wherein the bottom surface of the drop hammer head is flush with the upper edge of the sleeve, and the drop hammer impacts the test piece freely. Each impact starts from the free fall of the drop hammer to the completion of the complete rest of the drop hammer after the impact. Repeating the steps for a plurality of times until the first crack is generated on the tensile surface of the lower part, and recording the impact times, namely the initial crack impact times. And then, continuously carrying out multiple times of impact, wherein the crack at the bottom of the test piece develops upwards and penetrates through the whole interface, and observing and determining the times of damage impact by combining naked eyes with a magnifying glass.

At present, the existing patent document with the publication number of CN209356334U discloses a concrete impact resistance test device, although the concrete impact resistance test device can firstly quickly complete the positioning of a concrete test block, thus improving the data accuracy during the test of the concrete test block, and then can quickly complete the taking out and the re-installation of a steel ball, thus fully improving the work efficiency of the concrete impact test, and finally adjusting the height of a test mechanism. However, the device cannot automatically assemble the steel ball, and the steel ball still needs to be manually assembled to carry out repeated impact resistance tests.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is that the device can not automatically assemble the steel ball, and still needs to manually assemble the steel ball to perform repeated impact resistance test;

the bottom of the top plate is connected with a vertical column, the bottom of the vertical column is connected with a bottom plate, the center of the top plate is provided with an opening, the bottom of the opening is connected with a sleeve, an electric push rod is arranged in the cavity of the top plate, the telescopic end of the electric push rod is fixedly connected with a resistance plate, the resistance plate penetrates through the opening and bears a steel ball, the left side of the center of the top plate is provided with a first buffer plate, and the right side of the top plate is provided;

the front side and the rear side of the middle part of the bottom plate are fixedly connected with fixed blocks, a rotating shaft is connected between the fixed blocks in a switching manner, a carrying plate is fixedly connected to the outer side of the circumference of the rotating shaft, an electric lifting rod is respectively arranged on the left side and the right side of the bottom plate, the top of the electric lifting rod on the left side is connected with a left supporting block, the top of the electric lifting rod on the right side is connected with a right supporting block, the tops of the left supporting block and the right supporting block are lapped on the bottom of the carrying plate, a clamping mechanism is arranged on the carrying plate, a carrying table is arranged on the carrying plate, a test block is placed on the carrying table, a gasket is arranged on;

the lifting mechanism is characterized in that the right end of the bottom plate is fixedly connected with a lifting channel, a second buffer plate is arranged at the bottom of the lifting channel, a fixed pulley is arranged at the top of the right side wall of the lifting channel, a connecting wire is arranged on the fixed pulley, the left end of the wire is connected with a lifting rope, the lifting rope is connected with a ball carrying plate, the right end of the wire is connected with a take-up pulley, and the center of the take-up pulley is connected with a power output end.

Preferably, the clamping mechanism comprises a first motor, a power output end of the first motor is fixedly connected with a screw, two inner thread sliding seats are in threaded connection with the outer side of the circumference of the screw, the bottoms of the sliding seats are in sliding connection with sliding rails, the sliding rails are arranged on the object carrying plate, and the tops of the sliding seats are connected with clamping plates.

Preferably, the screw rod is a double-threaded screw rod with threads on two sides in opposite rotating directions, and the sliding seat is respectively screwed on the threads on the two sides.

Preferably, the lifting channel comprises an inlet and an outlet, the inlet is arranged on the right side of the loading plate, the outlet is arranged above the guide slope, and the top of the left side wall of the lifting channel is provided with a convex block.

Preferably, the sleeve comprises an upper sleeve and a lower sleeve, wherein the outer wall of the bottom of the upper sleeve is provided with threads, and the lower sleeve is screwed to the upper sleeve through the threads.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a clamping mechanism fixes the test block, prevents that the test block from the displacement off tracking appearing when carrying out impact test, influences experimental accuracy. The steel ball is used for carrying out impact test on the test block, and compared with a traditional detection mode, the working strength is reduced. Through the cooperation of the electric lifting rod and the object carrying plate, the lifting channel is matched with the fixed pulley and the baffle plate, the automatic lifting assembly of the steel ball is realized, the position of the steel ball does not need to be manually adjusted, and the impact resistance test can be repeatedly carried out.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the middle clamping mechanism of the present invention.

Reference numbers in the figures: 1 top plate, 11 holes, 2 electric push rod, 3 guide slope, 4 first buffer plate, 5 sleeves, 51 upper sleeves, 52 lower sleeves, 53 threads, 6 vertical columns, 7 bottom plate, 8 fixed blocks, 81 rotating shaft, 9 object carrying plate, 91 object carrying table, 10 electric lifting rod, 12 left supporting block, 13 right supporting block, 14 clamping mechanism, 15 first motor, 151 screw rod, 16 sliding seat, 161 clamping plate, 17 sliding rail, 18 test block, 19 lifting channel, 191 inlet, 192 outlet, 193 protruding block, 20 second buffer plate, 21 ball carrying plate, 22 lifting rope, 23 line, 24 fixed pulley, 25 take-up pulley, 26 second motor, 27 baffle plate, 28 gasket, 29 adaptive sheet, 30 steel ball and 31 binding belt.

Detailed Description

The invention is further described with reference to the accompanying drawings and examples.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "horizontal", "up", "down", "front", "back", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, an impact resistance testing apparatus for a concrete test block includes a top plate 1;

the bottom of the top plate 1 is connected with a vertical column 6, the bottom of the vertical column 6 is connected with a bottom plate 7, the center of the top plate 1 is provided with an opening 11, the bottom of the opening 11 is connected with a sleeve 5, an electric push rod 2 is arranged in a cavity of the top plate 1, a telescopic end of the electric push rod 2 is fixedly connected with a resistance plate 27, the resistance plate 27 penetrates through the opening 11 and bears a steel ball 30, the left side of the center of the top plate 1 is provided with a first buffer plate 4, and the right side of the top plate 1 is provided with;

the front side and the rear side of the middle of the bottom plate 7 are fixedly connected with fixed blocks 8, a rotating shaft 81 is connected between the fixed blocks 8 in a switching manner, an object carrying plate 9 is fixedly connected to the outer side of the circumference of the rotating shaft 81, the left side and the right side of the bottom plate 7 are respectively provided with an electric lifting rod 10, the top of the electric lifting rod 10 at the left side is connected with a left supporting block 12, the top of the electric lifting rod 10 at the right side is connected with a right supporting block 13, the tops of the left supporting block 12 and the right supporting block 13 are lapped at the bottom of the object carrying plate 9, the object carrying plate 9 is provided with a clamping mechanism 14, the object carrying plate 9 is provided with an object carrying table 91, a test block 18 is placed on the object carrying table 91, the top of the test;

the right end of the bottom plate 7 is fixedly connected with a lifting channel 19, a second buffer plate 20 is arranged at the bottom of the lifting channel 19, a fixed pulley 24 is arranged at the top of the right side wall of the lifting channel 19, a connecting wire 23 is arranged on the fixed pulley 24, the left end of the wire 23 is connected with a lifting rope 22, the lifting rope 22 is connected with a ball bearing plate 21, the right end of the wire 23 is connected with a take-up pulley 25, and the center of the take-up pulley 25 is connected with a power output end of a second motor 26.

For the better experimental operation of being convenient for, the utility model discloses still include clamping mechanism 14 includes first motor 15, the power take off end rigid coupling screw rod 151 of first motor 15, two internal thread sliding seat 16 of screw rod 151 circumference outside spiro union, sliding seat 16 bottom sliding connection is in slide rail 17, slide rail 17 is located and is carried on the

thing board

9, 16 top connecting splint 161 of sliding seat. The screw 151 is a double-headed screw with opposite thread turning directions on two sides, and the sliding seat 16 is respectively screwed on the threads on two sides. The lifting channel 19 comprises an inlet 191 and an outlet 192, the inlet 191 is arranged on the right side of the loading plate 9, the outlet 192 is arranged above the guide slope 3, and a bump 193 is arranged at the top of the left side wall of the lifting channel 19. The sleeve 5 comprises an upper sleeve 51 and a lower sleeve 52, wherein threads 53 are arranged on the outer wall of the bottom of the upper sleeve 5, and the lower sleeve 52 is screwed to the upper sleeve 5 through the threads 53.

The working principle is as follows: the utility model discloses a place test block 18 on objective table 91, start first motor 14, first motor 14 drives screw rod 15 and rotates, drives sliding seat 16 and draws close to the center along slide rail 17, drives splint 161 and cliies 18 both ends of test block, fixes test block 18. And starting the electric push rod 2, shortening the telescopic end, canceling the support of the resistance plate 27 on the steel ball 30, enabling the steel ball 30 to fall along the opening 11, and performing an impact resistance test on the test block 18 through the sleeve 5. After the first impact resistance test is finished, the electric push rod 2 is reset, and the left electric lifting rod 10 and the right electric lifting rod 10 are controlled to descend simultaneously, so that the steel ball 30 is completely exposed below the sleeve. The right electric lifting rod 10 is controlled to descend again, so that the loading plate 9 inclines to the lower right, the steel ball 30 rolls to the inlet 191 of the lifting channel 19 to roll to the ball loading plate 21 continuously, and at the moment, the second buffer plate 20 gives a buffer effect. And starting the second motor 26 to drive the take-up pulley 25 to rotate, and connecting the lifting rope 22 through the fixed pulley 24 and the wire 23 to drive the ball bearing plate 21 to move upwards. When the ball bearing plate 21 moves below the outlet 192, the left end of the ball bearing plate 21 is blocked from rising due to the existence of the projection 193, the right end of the ball bearing plate 21 continues rising, the ball bearing plate 21 is in a state of inclining to the lower left, the steel ball 30 rolls out of the outlet 192 to the guide slope 3 to the lower left, and moves to the top of the opening 11 along the guide plate 3 to the left, and at this time, the first buffer plate 4 gives a buffer action. And resetting the left electric lifting rod 10, the right electric lifting rod 10 and the ball bearing plate 21, performing a second round of impact resistance test, and repeating the steps.

The above-mentioned embodiments only express the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but the present invention is not limited to these embodiments, and it should be noted that it is obvious to those skilled in the art. Without departing from the spirit of the present invention, any improvement is within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a concrete test block shock resistance test device which characterized in that: comprises a top plate (1);

the bottom of the top plate (1) is connected with a vertical column (6), the bottom of the vertical column (6) is connected with a bottom plate (7), the center of the top plate (1) is provided with a hole (11), the bottom of the hole (11) is connected with a sleeve (5), an electric push rod (2) is arranged in a cavity of the top plate (1), a resistance plate (27) is fixedly connected to the telescopic end of the electric push rod (2), the resistance plate (27) penetrates through the hole (11) and bears a steel ball (30), the left side of the center of the top plate (1) is provided with a first buffer plate (4), and the right side of the top plate (1) is provided with a;

the front side and the rear side of the middle part of the bottom plate (7) are fixedly connected with fixed blocks (8), a rotating shaft (81) is connected between the fixed blocks (8), the outer side of the circumference of the rotating shaft (81) is fixedly connected with an object carrying plate (9), the left side and the right side of the bottom plate (7) are respectively provided with an electric lifting rod (10), the top of the electric lifting rod (10) on the left side is connected with a left supporting block (12), the top of the electric lifting rod (10) on the right side is connected with a right supporting block (13), the tops of the left supporting block (12) and the right supporting block (13) are lapped on the bottom of the carrying plate (9), a clamping mechanism (14) is arranged on the object carrying plate (9), an object carrying table (91) is arranged on the object carrying plate (9), a test block (18) is placed on the objective table (91), a gasket (28) is arranged at the top of the test block (18), the gasket (28) is fixed on the test block (18) through a binding band (31), and the bottom of the test block (18) is fixedly connected with an adaptive sheet (29);

bottom plate (7) right-hand member rigid coupling lift passageway (19), lift passageway (19) bottom is equipped with second buffer board (20), lift passageway (19) right side wall top is equipped with fixed pulley (24), connecting wire (23) are gone up in fixed pulley (24), lifting rope (22) are connected to line (23) left end, ball carrier plate (21) is connected in lifting rope (22), take-up pulley (25) are connected to line (23) right-hand member, the power take-up end of second motor (26) is connected in take-up pulley (25) center.

2. The concrete test block impact test device according to claim 1, wherein: clamping mechanism (14) include first motor (15), power take off end rigid coupling screw rod (151) of first motor (15), two internal thread sliding seat (16) of screw rod (151) circumference outside spiro union, sliding seat (16) bottom sliding connection is in slide rail (17), slide rail (17) are located and are carried on thing board (9), splint (161) are connected at sliding seat (16) top.

3. The concrete test block impact test device according to claim 2, wherein: the screw rod (151) is a double-end screw rod with threads on two sides in opposite rotating directions, and the sliding seat (16) is respectively screwed on the threads on the two sides.

4. The concrete test block impact test device according to claim 1, wherein: lifting channel (19) are including import (191), export (192), import (191) are located and are carried thing board (9) right side, guide slope (3) top is located in export (192), lifting channel (19) left side wall top is equipped with lug (193).

5. The concrete test block impact test device according to claim 1, wherein: the sleeve (5) comprises an upper sleeve (51) and a lower sleeve (52), wherein threads (53) are arranged on the outer wall of the bottom of the upper sleeve (5), and the lower sleeve (52) is in threaded connection with the upper sleeve (5) through the threads (53).