CN213275192U

CN213275192U - Concrete sample bending resistance testing machine

Info

Publication number: CN213275192U
Application number: CN202022194013.0U
Authority: CN
Inventors: 黄建康; 俞仁爱; 高加
Original assignee: Hangzhou Jinding Industrial Co ltd
Current assignee: Hangzhou Jinding Industrial Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-05-25
Anticipated expiration: 2030-09-29

Abstract

The application relates to a concrete sample bending test machine, it includes workstation, controller, stand, sets up the crossbeam on the stand, sets up in the last seat of pressing of crossbeam below, by the brace table of controller control, set up bearing platform and the collecting plate on the brace table and set up the seat of pressing down on bearing platform. The protective cover is additionally arranged on the workbench and comprises a rotating plate and a plurality of side plates, the rotating plate and the plurality of side plates are sequentially connected and surround to form a closed experimental space, the rotating plate is rotatably connected with one adjacent side plate, and a lock catch assembly is additionally arranged between the rotating plate and the other adjacent side plate. When the rotating plate and the side plate are arranged on the workbench, the upper pressing seat and the lower pressing seat are both arranged in the experimental space. This application has the effect that the garrulous appearance that avoids concrete sample to produce splashes and injures people and conveniently collect garrulous appearance simultaneously in the experiment.

Description

Concrete sample bending resistance testing machine

Technical Field

The application relates to the technical field of concrete sample detection equipment, in particular to a concrete sample bending resistance testing machine.

Background

In the fields of construction, municipal engineering and the like, concrete is the most common material, and the compressive strength and the tensile strength are important material attributes, particularly in the municipal engineering, the tensile strength of the concrete is an important index for controlling the quality of a concrete structure. In actual work, a concrete direct tensile loading mode is not easy to realize, and a bending test and a split-draw test are usually adopted as alternative methods for evaluating the tensile property of concrete. At present, the bending test of the concrete sample is mostly carried out on a bending tester of the concrete sample.

A concrete sample bending resistance testing machine comprises a workbench 11, a controller 12 fixedly arranged on the workbench 11 and used for adjusting and displaying the bending resistance of concrete, two upright columns 13 vertically fixed on the workbench 11, a cross beam 14 erected on the two upright columns 13, an upper pressing seat 15 fixed on one side of the cross beam 14 close to the workbench 11, a support table 16 fixed on the workbench 11, a bearing table 17 fixed on the support table 16, two lower pressing seats 19 fixed on the bearing table 17 and a collecting plate 18 fixed on the support table 16, as shown in figure 1. The two lower pressing seats 19 are symmetrically arranged on two sides of the upper pressing seat 15 by taking the plane of the upper pressing seat 15 as a symmetry plane, and the lower pressing seats 19 are arranged below the upper pressing seat 15. The collecting plate 18 is horizontally disposed below the depressing base 19, and the collecting plate 18 moves together with the supporting base 16. The concrete sample is erected on two lower pressure seats 19, the support table 16 is connected with the controller 12 and is controlled by the controller 12, one side of the display of the controller 12, which faces an operator, is called as the front side of the concrete sample bending tester, and the collecting plate 18 is provided with baffles 181 except for the other three sides facing the front side. The controller 12 is operated to raise the pressure bearing table 17, raise the concrete sample on the lower pressure seat 19 to contact the upper pressure seat 15, and test the breaking strength of the concrete sample under the cooperation of the lower pressure seat 19 and the upper pressure seat 15.

In view of the above-mentioned related art, the inventor believes that when a concrete sample is subjected to a fracture resistance test, the concrete sample is broken to generate a broken sample, and the broken sample is scattered to the ground, so that the defect that the broken sample on the ground is inconvenient to clean exists.

SUMMERY OF THE UTILITY MODEL

In order to reduce the condition that garrulous appearance scatters to the inconvenient clearance on the ground when the concrete sample breaks, this application provides a concrete sample bending test machine.

The application provides a concrete sample bending test machine adopts following technical scheme:

a concrete sample bending resistance testing machine comprises a workbench, a controller, an upright post, a cross beam arranged on the upright post, an upper pressing seat arranged below the cross beam, a supporting table controlled by the controller, a bearing table and a collecting plate arranged on the supporting table, and a lower pressing seat arranged on the bearing table; the method is characterized in that: the protective cover is additionally arranged on the workbench and comprises a rotating plate and a plurality of side plates, the rotating plate and the side plates are sequentially connected and surround to form a closed experimental space, the rotating plate is rotatably connected with one adjacent side plate, and a locking assembly is additionally arranged between the rotating plate and the other adjacent side plate; when the rotating plate and the side plate are arranged on the workbench, the upper pressing seat and the lower pressing seat are both arranged in the experimental space.

Through adopting above-mentioned technical scheme, the concrete sample carries out anti experiment of rolling over in the experimental space, and when carrying out anti experiment of rolling over, the garrulous appearance that the concrete sample fracture produced can be blocked by the safety cover, reduces garrulous appearance and scatters to the subaerial condition to conveniently clear up garrulous appearance.

Optionally, at least three limiting pieces are additionally arranged on the workbench, and each side plate is correspondingly provided with at least one limiting piece; the limiting part is arranged outside the experimental space and comprises a magnet base magnetically attracted on the workbench and a limiting block arranged on the magnet base; one side of the limiting block, which is close to the side plate, is tightly propped against the side plate.

Through adopting above-mentioned technical scheme, the stopper carries on spacingly to the safety cover, owing to do not need very strong power to carry on spacingly to the safety cover, so adopt the magnet base to adsorb on the workstation to the magnet base is convenient to be removed and is changed.

Optionally, an inclined plate arranged along the inner wall is additionally arranged on the side plate, one side, away from the side plate, of the inclined plate is inclined downwards towards the middle of the collecting plate, and the projection of one side, away from the side plate, of the inclined plate on the plane where the collecting plate is located on the collecting plate.

Through adopting above-mentioned technical scheme, the slanted bar covers the clearance between safety cover inner wall and the collecting plate, reduces the garrulous appearance that falls on the workstation from the clearance between safety cover inner wall and the collecting plate.

Optionally, a cross rod arranged along the whole length of the inclined plate is additionally arranged on one side of the inclined plate close to the inner wall of the side plate, and the cross rod is in clearance fit with the side plate; vertical rods are arranged along the vertical direction on one side of each side plate in the experimental space, and each side plate is provided with at least two vertical rods; the cross rod is provided with a through hole corresponding to the vertical rod, the vertical rod penetrates through the through hole, and the cross rod is in sliding fit with the vertical rod; the one end that the horizontal pole was kept away from to the swash plate has increased the support that two at least intervals set up, the one end that the swash plate was kept away from to the support is shelved on the collecting plate.

Through adopting above-mentioned technical scheme, the slanted bar can move in vertical direction, and when the supporting bench rose as the collecting board, the slanted bar also can rose along with the collecting board rose.

Optionally, the upper surface of the cross bar is an inclined surface which is inclined downwards from one end of the cross bar close to the side plate to the inclined plate.

Through adopting above-mentioned technical scheme, scatter on the garrulous appearance of horizontal pole upper surface can fall into the collecting board along the inclined plane, collected the garrulous appearance on the horizontal pole, be convenient for concentrate the garrulous appearance of clearance.

Optionally, the side plate is provided with a track groove which is vertically arranged in a penetrating manner, and the track groove penetrates through two sides of the side plate; two rubber sheets arranged along the whole length of the track groove are additionally arranged in the track groove, and the two rubber sheets are respectively fixed on two side walls of the track groove; a straight rod is additionally arranged on one side of the cross rod close to the side plate; one end of the straight rod is arranged on the cross rod, the other end of the straight rod penetrates through a gap between the two rubber sheets, and the penetrating end of the straight rod extends out of the side plate.

By adopting the technical scheme, a worker can control the straight rod outside the protective sleeve so as to control the inclined strip in the protective sleeve; the rubber piece can prevent the broken sample from flying out of the experimental space from the track groove.

Optionally, a locking assembly for locking the straight rod on the rail groove is additionally arranged on the straight rod, the locking assembly comprises a gasket sleeved outside the straight rod and a bolt piece, a thread is additionally arranged on the straight rod to form a thread section, and the bolt piece is in thread fit with the straight rod; the gasket is tightly propped against the outer wall of the side plate, and the bolt piece is tightly propped against the gasket.

Through adopting above-mentioned technical scheme, when operating personnel will take out the protective sheath or put into, screw up bolt spare and make gasket and curb plate support tightly, the straight-bar just is fixed in on the fixed slot to the height of fixed horizontal pole.

Optionally, the outer wall of the straight rod is additionally provided with anti-slip lines.

Through adopting above-mentioned technical scheme, make things convenient for operating personnel to snatch and rotate the straight-bar.

Optionally, a top cover is additionally arranged on the upper pressure seat, the top cover is positioned right above the side wall, and the bottom of the top cover is in clearance fit with the top of the side plate.

Through adopting above-mentioned technical scheme, reduce the garrulous appearance of flying out from the top of protective sheath.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the concrete sample is subjected to the anti-folding experiment in the experiment space, and when the anti-folding experiment is carried out, broken samples generated by the breakage of the concrete sample can be resisted by the protective cover, so that the condition that the broken samples are scattered to the ground is reduced, and the broken samples are convenient to clean;

2. by additionally arranging the oblique strips, broken samples falling onto the workbench from a gap between the side wall and the collecting plate are reduced;

3. through addding the top cap, reduce the garrulous appearance of following the opening departure in protective sheath top.

Drawings

FIG. 1 is a schematic view of the overall structure of a concrete sample bending tester in the background art;

FIG. 2 is a schematic diagram of the overall structure of the present application;

FIG. 3 is a cross-sectional view of a protective cover of the present application;

fig. 4 is an enlarged view of a portion a in fig. 3.

Description of reference numerals: 11. a work table; 12. a control instrument; 13. a column; 14. a cross beam; 15. an upper pressing seat; 16. a support table; 17. a pressure bearing table; 18. a collection plate; 181. a baffle plate; 19. pressing down the base; 2. a protective cover; 21. a rotating plate; 22. a side plate; 221. a track groove; 222. a rubber sheet; 3. a latch assembly; 31. a bump; 32. a bolt; 33. a lock hole; 4. a limiting member; 41. a magnet base; 42. a limiting block; 5. a sloping plate; 51. a support; 6. a cross bar; 61. a through hole; 62. a straight rod; 621. anti-skid lines; 622. a threaded segment; 7. a vertical rod; 8. a locking assembly; 81. a gasket; 82. a butterfly nut; 9. and a top cover.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses concrete sample bending resistance testing machine. Referring to fig. 2, the concrete sample bending resistance testing machine includes a workbench 11, a controller 12 fixedly installed on the workbench 11 for adjusting and displaying the bending resistance of concrete, two upright columns 13 vertically fixed on the workbench 11, a cross beam 14 erected on the two upright columns 13, an upper pressing seat 15 fixed on one side of the cross beam 14 close to the workbench 11, a support table 16 arranged right below the upper pressing seat 15, a pressing table 17 fixed on the support table 16, two lower pressing seats 19 fixed on the pressing table 17, and a collecting plate 18 fixed on the support table 16.

The two lower pressing seats 19 are symmetrically arranged on two sides of the upper pressing seat 15 by taking the plane of the upper pressing seat 15 as a symmetry plane, and the lower pressing seats 19 are arranged below the upper pressing seat 15. The collecting plate 18 is horizontally disposed below the depressing base 19, and the collecting plate 18 moves together with the supporting base 16. The concrete sample is erected on two lower pressure seats 19, the support table 16 is connected with the controller 12 and is controlled by the controller 12, one side of the display of the controller 12, which faces an operator, is called as the front side of the concrete sample bending tester, and the collecting plate 18 is provided with baffles 181 except for the other three sides facing the front side.

The protective cover 2 is additionally arranged between the upright column 13 and the lower pressing seat 19, the protective cover 2 is composed of four mutually vertical plates, wherein the plate facing the front is a rotating plate 21, the other three plates are side plates 22, and the rotating plate 21 and the three side plates 22 are sequentially connected to form a closed experimental space. The upper edges of the rotating plate 21 and the side plate 22 are both above the upper pressing base 15. The rotating plate 21 is rotatably connected with one adjacent side plate 22, and is fixedly connected with the other adjacent side plate 22 through the locking assembly 3.

The locking assembly 3 comprises a bolt 32 and a projection 31 fixed on the end surface of the side plate 22, and the rotating plate 21 is provided with a locking hole 33 corresponding to the projection 31. When the rotating plate 21 is closed, the projection 31 passes through the locking hole 33, and the latch 32 is inserted into one end of the projection 31 passing through the locking hole 33.

The protective cover 2 is sleeved outside the collecting plate 18, a rectangular top cover 9 is fixed on the upper pressing seat 15, the top cover 9 is horizontally arranged, and the bottom of the top cover 9 is in clearance fit with the top of the side plate 22. During installation, the top of the side plate 22 is attached to the bottom of the top cover 9, and then the side plate 22 is limited on the workbench 11 by the limiting piece 4. And the top cap 9 and the protective cover 2 are made of transparent materials, so that an operator can observe the concrete sample inside through the protective cover 2.

A limiting piece 4 is arranged on the outer wall of each side plate 22, and the protective cover 2 is fixed on the workbench 11 under the combined action of the three limiting pieces 4. The limiting member 4 includes a magnet base 41 magnetically attracted to the worktable 11 and a limiting block 42 fixed to the magnet base 41. The magnet base 41 is matched with the limiting block 42, and one side of the limiting block 42 close to the side plate 22 is tightly abutted against the outer wall of the side plate 22.

Combine fig. 2 and fig. 3, four angles in experimental space have increased the montant 7 of four vertical settings, and montant 7 sets up with the inner wall interval of curb plate 22 to the bottom of montant 7 and the bottom fixed connection of curb plate 22. The inner wall of each side plate 22 is additionally provided with a cross rod 6 horizontally arranged along the side plate 22 and an inclined plate 5 fixed on one side of the cross rod 6 departing from the side plate 22, and the cross rod 6 is in clearance fit with the side plate 22. The upper surface of the cross bar 6 and the upper surface of the sloping plate 5 are on the same plane, and the upper surface of the cross bar 6 and the upper surface of the sloping plate 5 are disposed obliquely downward from the cross bar 6 toward the lower pressure seat 19. The projection of the end of the sloping plate 5 remote from the crossbar 6 on the plane of the collecting plate 18 is within the collecting plate 18. Through holes 61 corresponding to the vertical rods 7 are formed in two ends of each cross rod 6, the vertical rods 7 penetrate through the through holes 61, and the cross rods 6 are in sliding fit along the vertical rods 7.

Two vertically arranged brackets 51 are additionally arranged at the end part of each inclined plate 5 far away from the cross rod 6. One end of the bracket 51 is fixed on the inclined plate 5, and the other end is placed on the collecting plate 18. And the two brackets 51 on each sloping plate 5 are equidistant from the adjacent vertical rod 7.

Referring to fig. 3 and 4, a straight rod 62 is additionally arranged on the side wall of the cross bar 6 close to the side plate 22, and the straight rod 62 is horizontally fixed on the side wall of the cross bar 6

Each side plate 22 is provided with a through rail groove 221 in the vertical direction, and the rail groove 221 is long. The straight rod 62 passes through the rail groove 221, the straight rod 62 is in sliding fit with the rail groove 221, and the outer wall of one end of the straight rod 62 passing through the rail groove 221 is provided with anti-slip grains 621. A locking component 8 for locking the position of the straight rod 62 is additionally arranged between the straight rod 62 and the rail groove 221.

The locking assembly 8 comprises a gasket 81 and a wing nut 82 which are sleeved on the straight rod 62, threads are additionally arranged on the straight rod 62 to form a threaded section 622, and the wing nut 82 is in threaded fit with the straight rod 62. The wing nut 82 is tightly pressed against the gasket 81, and the gasket 81 is tightly pressed against the outer wall of the side plate 22.

In order to prevent the broken samples generated in the anti-bending test from flying out of the track grooves 221, two rubber sheets 222 arranged along the full length of the track grooves 221 are additionally arranged in each track groove 221. One rubber sheet 222 is fixed to one sidewall of the rail groove 221, and the other rubber sheet 222 is fixed to the other sidewall of the rail groove 221. The width of the two rubber sheets 222 is larger than half of the width of the rail groove 221, the two rubber sheets 222 are arranged in a staggered mode front and back, and the straight rod 62 penetrates through a gap between the two rubber sheets 222.

The implementation principle of the embodiment of the application is as follows: before the anti-bending experiment is carried out on the concrete sample, the height of the straight rod 62 is adjusted to enable the cross rod 6 to be located at a higher position, and then the butterfly nut 82 is screwed down, so that the position of the straight rod 62 is fixed, and the locking effect is achieved.

The rotating plate 21 is opened, the side plate 22 is sleeved outside the lower pressing seat 19, the side plate 22 is adjusted to enable the top of the side plate 22 to be attached to the bottom of the top cover 9, then the magnet base 41 is moved to limit the side plate 22, the butterfly nut 82 is unscrewed after limiting is completed, and the support 51 is placed on the collecting plate 18.

The concrete sample is placed on the two hold-down blocks 19 and the rotating plate 21 is rotated so that the projection 31 passes through the lock hole 33 and the latch 32 is inserted. The controller 12 is controlled to raise the pressure bearing table 17, and the anti-bending test is performed on the concrete sample.

In the bending test, the concrete sample is broken, the scattered chips are blocked by the protective cover 2, the top cover 9 and the rubber sheet 222, and the chips scattered onto the side plates 22 fall onto the cross bar 6 and fall into the collecting plate 18 along the sloping plate 5. After the experiment is completed, only the broken sample in the collecting plate 18 needs to be cleaned.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A concrete sample bending tester comprises a workbench (11), a controller (12), an upright (13), a beam (14) arranged on the upright (13), an upper pressure seat (15) arranged below the beam (14), a support table (16) controlled by the controller (12), a pressure bearing table (17) and a collecting plate (18) arranged on the support table (16), and a lower pressure seat (19) arranged on the pressure bearing table (17); the method is characterized in that: the protective cover (2) is additionally arranged on the workbench (11), the protective cover (2) comprises a rotating plate (21) and a plurality of side plates (22), the rotating plate (21) and the side plates (22) are sequentially connected and surround to form a closed experimental space, the rotating plate (21) is rotatably connected with one adjacent side plate (22), and a locking assembly (3) is additionally arranged between the rotating plate (21) and the other adjacent side plate (22); when the rotating plate (21) and the side plate (22) are arranged on the workbench (11), the upper pressing seat (15) and the lower pressing seat (19) are both arranged in the experimental space.

2. The concrete sample bending tester according to claim 1, wherein: at least three limiting pieces (4) are additionally arranged on the workbench (11), and each side plate (22) is correspondingly provided with at least one limiting piece (4); the limiting piece (4) is arranged outside the experimental space, and the limiting piece (4) comprises a magnet base (41) magnetically attracted to the workbench (11) and a limiting piece (42) arranged on the magnet base (41); one side of the limiting block (42) close to the side plate (22) is tightly propped against the side plate (22).

3. The concrete sample bending tester according to claim 2, wherein: the inclined plate (5) arranged along the inner wall of the side plate (22) is additionally arranged on the side plate (22), one side, far away from the side plate (22), of the inclined plate (5) is inclined downwards towards the middle of the collecting plate (18), and the projection, on the plane where the collecting plate (18) is located, of one side, far away from the side plate (22), of the inclined plate (5) is located on the collecting plate (18).

4. A concrete sample bending tester according to claim 3, characterized in that: a cross rod (6) arranged along the whole length of the inclined plate (5) is additionally arranged on one side of the inclined plate (5) close to the inner wall of the side plate (22), and the cross rod (6) is in clearance fit with the side plate (22); vertical rods (7) which are vertically arranged are additionally arranged on one side of each side plate (22) which is positioned in the experimental space, and each side plate (22) is provided with at least two vertical rods (7); the cross rod (6) is provided with a through hole (61) corresponding to the vertical rod (7), the vertical rod (7) penetrates through the through hole (61), and the cross rod (6) is in sliding fit along the vertical rod (7); at least two supports (51) arranged at intervals are additionally arranged at one end, far away from the cross rod (6), of the inclined plate (5), and one end, far away from the inclined plate (5), of each support (51) is placed on the collecting plate (18).

5. The concrete sample bending tester according to claim 4, wherein: the upper surface of the cross rod (6) is an inclined surface which inclines downwards from one end, close to the side plate (22), of the cross rod (6) to the inclined plate (5).

6. The concrete sample bending tester according to claim 5, wherein: the side plate (22) is provided with a track groove (221) which is vertically arranged in a penetrating manner, and the track groove (221) penetrates through two sides of the side plate (22); two rubber sheets (222) arranged along the whole length of the track groove (221) are additionally arranged in the track groove (221), and the two rubber sheets (222) are respectively fixed on two side walls of the track groove (221); a straight rod (62) is additionally arranged on one side of the cross rod (6) close to the side plate (22); one end of the straight rod (62) is arranged on the cross rod (6), the other end of the straight rod penetrates through a gap between the two rubber sheets (222), and the penetrating end of the straight rod extends out of the side plate (22).

7. The concrete sample bending tester according to claim 6, wherein: a locking assembly (8) used for locking the straight rod (62) on the track groove (221) is additionally arranged on the straight rod (62), the locking assembly (8) comprises a gasket (81) and a butterfly nut (82) which are sleeved outside the straight rod (62), a thread forming thread section (622) is additionally arranged on the straight rod (62), and the butterfly nut (82) is in thread fit with the straight rod (62); the gasket (81) is tightly propped against the outer wall of the side plate (22), and the butterfly nut (82) is tightly propped against the gasket (81).

8. The concrete sample bending tester according to claim 7, wherein: the outer wall of the straight rod (62) is additionally provided with anti-skid grains (621).

9. The concrete sample bending tester according to claim 1, wherein: a top cover (9) is additionally arranged on the upper pressure seat (15), the top cover (9) is located right above the side plate (22), and the bottom of the top cover (9) is in clearance fit with the top of the side plate (22).