CN211668978U

CN211668978U - Concrete bending resistance testing machine

Info

Publication number: CN211668978U
Application number: CN202020066251.0U
Authority: CN
Inventors: 陈海洋
Original assignee: Xi'an Baiguyuan Concrete Co ltd
Current assignee: Xi'an Baiguyuan Concrete Co ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-10-13
Anticipated expiration: 2030-01-13

Abstract

The utility model relates to a concrete bending resistance testing machine, the on-line screen storage device comprises a base, the test bench, a supporting seat, the pillar, the crossbeam, pneumatic cylinder and last pressure seat, the test bench center with last pressure seat center on same vertical line, it is provided with the spout to lie in the test bench top on the bearing, one side that the bearing is close to operating personnel is equipped with the scale, it pushes down the seat to slide on the spout to be equipped with, the base is kept away from scale one side and is just being provided with the fixed block to the test bench, the fixed block both sides are equipped with the backup pad relatively, the fixed block top is provided with the biax motor, the coaxial lead screw that is provided with of output shaft of biax motor, the lead screw other end rotates to be connected in the backup pad, the lead screw is parallel with the bearing, two lead screw silks opposite direction. The utility model discloses an anti testing machine that rolls over of concrete has solved the concrete sample and has pressed the problem of centering difficulty on the seat down, and convenience of customers uses.

Description

Concrete bending resistance testing machine

Technical Field

The utility model belongs to the technical field of the technique that the concrete detected and specifically relates to an anti testing machine that rolls over of concrete is related to.

Background

The bending (bending) strength and deformation are important material attributes of concrete, a concrete bending tester is generally used for detecting the bending resistance of a concrete test block, a right-angle prism small beam with the size of 150mm multiplied by 550mm and the particle size of coarse aggregate not more than 40mm is used as a standard test piece and is placed on a test device during testing, the concrete test block is continuously pressurized until the concrete test block is broken, and the test value at the moment is recorded.

The existing Chinese patent with publication number CN207516177U discloses a concrete bending resistance testing machine, which comprises a testing machine base, a controller and a testing device fixedly arranged on the base and used for testing a concrete test block; the test device is including setting up two stands on the base, connect in the crossbeam of coexistence post upper end, set up in the crossbeam lower extreme and be used for pushing down the last seat of pressing of concrete test block, fixed mounting is a supporting bench on the base, fixed mounting is the bearing plate on a supporting bench, fixed two the seat of pressing down that are used for placing the concrete test block that set up on the bearing plate, the collecting tank that is used for gathering concrete residue is offered to the bearing plate upper end, set up the blown down tank that feeds through in collecting tank on the bearing plate lateral wall, collecting tank internalization is provided with the propelling movement subassembly that is used for promoting the concrete residue out the blown down tank, conveniently clear up concrete residue.

The above prior art solutions have the following drawbacks: the center position of the span of the concrete test piece needs to be aligned to the center position of the upper pressing seat, but the span of the concrete test piece is difficult to correspond to the center of the upper pressing seat in a centering mode through manual observation, so that test data have deviation.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing an anti testing machine that rolls over of concrete, the device have solved the problem of concrete test piece centering difficulty on pressing the seat down, and convenience of customers uses.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a concrete bending resistance testing machine comprises a base, a test bed, a supporting seat, a supporting column, a cross beam, a hydraulic cylinder and an upper pressing seat, wherein the center of the test bed and the center of the upper pressing seat are on the same vertical line, a sliding groove is formed in the supporting seat and positioned at the top of the test bed, a graduated scale is arranged on one side, close to an operator, of the supporting seat, a lower pressing seat is arranged on the sliding groove in a sliding mode, one side, away from the graduated scale, of the base is opposite to the test bed and is provided with a fixed block, supporting plates are oppositely arranged on two sides of the fixed block, a double-shaft motor is arranged at the top of the fixed block, a screw rod is coaxially arranged at an output shaft of the double-shaft motor, the other end of the screw rod is rotatably connected to the supporting plates, the screw rod is parallel to the supporting, the bottom of the push plate is higher than the top of the lower pressing seat.

By adopting the technical scheme, the distance between the two lower pressing seats is adjusted on the supporting seat by referring to the graduated scale, the distance between the graduated scale and the central line of the upper pressing seat is 225mm and the graduated scale is fixed, a concrete sample to be tested is placed on the two lower pressing seats, the double-shaft motor is started to enable the output shaft of the double-shaft motor to rotate to drive the screw rod to rotate, the push plate is further driven to push the concrete sample to move along the direction of the guide rod, the centering of the concrete sample is realized, then the double-shaft motor is controlled to rotate reversely to enable the push plate to recover the original position, and the hydraulic cylinder is started to start testing.

The present invention may be further configured in a preferred embodiment as: the pressing seat comprises a sliding block which is connected to the sliding groove in a sliding mode, the middle of the top of the sliding block is provided with a rotating roller, the sliding block is provided with a screw hole towards the supporting seat, the screw hole is vertically provided with a bolt, and the top of the sliding block is located on two sides of the rotating roller and is vertically provided with a limiting roller.

By adopting the technical scheme, a user fixes the sliding block by screwing the bolt; the sliding friction is changed into rolling friction through the rotating roller, so that a user can conveniently adjust the position of the concrete test piece on the pressing seat; carry on spacingly through spacing roller to the concrete sample, prevent that its motion in-process from taking place the skew and influencing the test result.

The present invention may be further configured in a preferred embodiment as: and the middle part of the side wall of the slide block, which is close to the graduated scale, is provided with a pointer in parallel with the graduated scale.

By adopting the technical scheme, the pointer is taken as the reference point, so that the user can conveniently compare scales on the reference graduated scale, and the user can conveniently use the graduated scale.

The present invention may be further configured in a preferred embodiment as: the side of the supporting seat, provided with the graduated scale, is provided with a sliding rail in parallel with the side, the sliding rail is connected with an installation block in a sliding manner, the top of the installation block is provided with an installation part, and the installation part is provided with a magnifying lens.

Through adopting above-mentioned technical scheme, through the scale on the magnifying glass magnification scale, convenience of customers observes, the reading, and the position of the adjustable magnifying glass of slidable mounting piece on the slide rail facilitates the user and uses.

The present invention may be further configured in a preferred embodiment as: the installed part is including setting up the sleeve at installation piece top, the sleeve lateral wall is provided with adjusting bolt perpendicularly, the installation pole of magnifying glass is worn to locate in the sleeve, adjusting bolt tip butt is at installation pole lateral wall.

Through adopting above-mentioned technical scheme, loosen adjusting bolt, stretch out telescopic distance through adjusting the installation pole and adjust the height of magnifying glass, convenience of customers uses.

The present invention may be further configured in a preferred embodiment as: and the mounting rod is provided with reference scale marks.

By adopting the technical scheme, a user can conveniently adjust the magnifier to the most appropriate height by referring to the scale marks.

The present invention may be further configured in a preferred embodiment as: and star-shaped plastic heads are arranged at the end parts of the adjusting bolts outside the sleeve.

By adopting the technical scheme, the star-shaped plastic head is convenient for users to adjust the adjusting bolt, and the star-shaped plastic head is convenient for users to use.

The present invention may be further configured in a preferred embodiment as: the backup pad with the push pedal with all be provided with the bellows between the biax motor, the bellows cover is established the lead screw is outside.

Through adopting above-mentioned technical scheme, protect the lead screw through the bellows, prevent that the sediment after the concrete sample is broken from dropping and influencing the normal use of device on the lead screw.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the distance between the two lower pressure seats is adjusted on the supporting seat by the reference graduated scale, the distance between the lower pressure seats and the central line of the upper pressure seat is 225mm, the concrete sample to be tested is placed on the two lower pressure seats, the double-shaft motor is started to enable the output shaft of the double-shaft motor to rotate to drive the lead screw to rotate, the push plate is further driven to push the concrete sample to move along the direction of the guide rod, the centering of the concrete sample is achieved, then the double-shaft motor is controlled to rotate reversely to enable the push plate to recover the original position, the hydraulic cylinder is started to start testing, the device solves the problem that the concrete sample is difficult to center on the lower pressure seats, and.

Drawings

FIG. 1 is a schematic view of the overall structure of the concrete bending resistance testing machine of the present invention;

FIG. 2 is a schematic view of FIG. 1 with the bellows removed and in another orientation;

fig. 3 is an enlarged schematic view of a portion a in fig. 1.

In the figure, 1, a base; 2. a test bed; 3. a supporting seat; 31. a chute; 32. a graduated scale; 33. pressing down the base; 331. a slider; 332. a rotating roller; 333. a bolt; 334. a limiting roller; 335. a pointer; 34. a slide rail; 35. mounting blocks; 36. a magnifying glass; 361. mounting a rod; 362. reference scale lines; 37. a mounting member; 371. a sleeve; 372. adjusting the bolt; 373. a star-shaped plastic head; 4. a pillar; 5. a cross beam; 51. a hydraulic cylinder; 52. an upper pressing seat; 6. a fixed block; 61. a support plate; 62. a double-shaft motor; 63. a screw rod; 64. a guide bar; 65. pushing the plate; 7. a bellows.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in figures 1 and 2, for the concrete bending resistance testing machine disclosed by the utility model, comprising a base 1, a test bed 2, a supporting seat 3, a pillar 4, a beam 5, a hydraulic cylinder 51 and an upper pressing seat 52, the center of the test bed 2 and the center of the upper pressing seat 52 are on the same vertical line, a chute 31 is arranged on the supporting seat 3 at the top of the test bed 2, a graduated scale 32 is arranged on one side of the supporting seat 3 close to an operator, a lower pressing seat 33 is arranged on the chute 31 in a sliding manner, a fixed block 6 is arranged on the side of the base 1 far away from the graduated scale 32 and right opposite to the test bed 2, supporting plates 61 are arranged at two sides of the fixed block 6 relatively, a double-shaft motor 62 is arranged at the top of the fixed block 6, a screw rod 63 is coaxially arranged on an output shaft of the double-shaft motor 62, the other end of the screw rod 63 is rotatably connected, the screw 63 is provided with a push plate 65, the push plate 65 is arranged on the guide rod 64 in a penetrating way, and the bottom of the push plate 65 is higher than the top of the lower pressing seat 33. The distance between the two lower pressure seats 33 is adjusted on the supporting seat 3 by the reference graduated scale 32, the distance between the reference graduated scale and the central line of the upper pressure seat 52 is 225mm and is fixed, a concrete sample to be tested is placed on the two lower pressure seats 33, the double-shaft motor 62 is started to enable the output shaft of the double-shaft motor to rotate to drive the screw rod 63 to rotate, the push plate 65 is further driven to push the concrete sample to move along the direction of the guide rod 64, the centering of the concrete sample is achieved, then the double-shaft motor 62 is controlled to rotate reversely to enable the push plate 65 to recover the original position, the hydraulic cylinder 51 is started to start testing, and the device solves the problem that the concrete sample is difficult to center on the lower pressure. In order to prevent the slag after the concrete sample is broken from falling on the screw 63 to influence the normal use of the device, corrugated pipes 7 are arranged between the support plate 61 and the push plate 65, and between the push plate 65 and the double-shaft motor 62, and the corrugated pipes 7 are sleeved outside the screw 63.

As shown in fig. 1 and 3, the lower pressing base 33 includes a sliding block 331 slidably connected to the sliding groove 31, a rotating roller 332 is disposed in the middle of the top of the sliding block 331, a screw hole is disposed on the sliding block 331 and faces the supporting base 3, a bolt 333 is vertically disposed at the screw hole, a limiting roller 334 is vertically disposed on the top of the sliding block 331 and located on two sides of the rotating roller 332, a user fixes the sliding block 331 by screwing the bolt 333, sliding friction is changed into rolling friction through the rotating roller 332, the user can adjust the position of the concrete sample on the lower pressing base 33 conveniently, the concrete sample is limited through the limiting roller 334, and the deviation in the movement process is prevented from affecting the test result. The middle part of the side wall of the slide block 331 near the scale 32 is provided with a pointer 335 parallel to the scale 32, which is convenient for the user to compare the scales on the reference scale 32.

As shown in fig. 1 and 3, a slide rail 34 is arranged on one side of the support base 3, where the graduated scale 32 is arranged, in parallel with the side, a mounting block 35 is connected to the slide rail 34 in a sliding manner, a mounting part 37 is arranged at the top of the mounting block 35, a magnifying glass 36 is arranged on the mounting part 37, so that a user can observe and read conveniently, and the position of the magnifying glass 36 can be adjusted by the slide mounting block 35 on the slide rail 34, so that the use by the user is. The installed part 37 is including setting up the sleeve 371 at installation piece 35 top, and sleeve 371 lateral wall is provided with adjusting bolt 372 perpendicularly, and in sleeve 371 was worn to locate by the installation pole 361 of magnifying glass 36, adjusting bolt 372 tip butt was in installation pole 361 lateral wall, and adjusting bolt 372 is located the outer tip of sleeve 371 and is provided with star type plastic head 373, is equipped with reference scale mark 362 on the installation pole 361, loosens adjusting bolt 372, stretches out the height that the sleeve 371 was adjusted to the distance that the sleeve 36 was stretched out through adjusting installation pole 361, convenience of customers uses.

The implementation principle of the embodiment is as follows: the utility model discloses an anti testing machine of rolling over of concrete is when using, refer to scale 32 and adjust two distances of pressing between the seat 33 on bearing 3, make its and last distance of pressing a 52 central line be 225mm and fix it, the concrete sample that will await measuring places two and presses on the seat 33, start-up double-shaft motor 62 and make its output shaft rotate and drive lead screw 63 and rotate, and then drive push pedal 65 and promote concrete sample and follow the removal of guide bar 64 direction, realize the centering of concrete sample, later control double-shaft motor 62 reversal makes push pedal 65 resume the normal position, start-up pneumatic cylinder 51 begins the test.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a concrete bending test machine, includes base (1), test bench (2), bearing (3), pillar (4), crossbeam (5), pneumatic cylinder (51) and last pressure seat (52), test bench (2) center with go up pressure seat (52) center on same vertical line, it is provided with spout (31) to lie in test bench (2) top on bearing (3), one side that bearing (3) are close to operating personnel is equipped with scale (32), it presses seat (33), its characterized in that to slide on spout (31) to be equipped with down: one side, far away from the graduated scale (32), of the base (1) is provided with a fixed block (6) over against the test bed (2), two sides of the fixed block (6) are provided with supporting plates (61) oppositely, the top of the fixed block (6) is provided with a double-shaft motor (62), an output shaft of the double-shaft motor (62) is coaxially provided with a lead screw (63), the other end of the lead screw (63) is rotatably connected onto the supporting plates (61), the lead screw (63) is parallel to the supporting seat (3), the thread directions of the two lead screws (63) are opposite, a guide rod (64) is arranged between the two supporting plates (61), a push plate (65) is arranged on the lead screw (63), the push plate (65) is arranged on the guide rod (64) in a penetrating mode, and the bottom of the push plate (65).

2. The concrete bending tester according to claim 1, wherein: the pressing base (33) comprises a sliding block (331) which is connected to the sliding groove (31) in a sliding mode, a rotating roller (332) is arranged in the middle of the top of the sliding block (331), a screw hole is formed in the sliding block (331) and faces the supporting base (3), a bolt (333) is vertically arranged at the screw hole, and limiting rollers (334) are vertically arranged on the top of the sliding block (331) and located on two sides of the rotating roller (332).

3. The concrete bending tester according to claim 2, wherein: and a pointer (335) is arranged in the middle of the side wall of the sliding block (331) close to the graduated scale (32) and is parallel to the graduated scale (32).

4. A concrete bending tester according to claim 3, characterized in that: the side of the support seat (3) provided with the graduated scale (32) is provided with a sliding rail (34) in parallel with the side, the sliding rail (34) is connected with an installation block (35) in a sliding mode, the top of the installation block (35) is provided with an installation part (37), and the installation part (37) is provided with a magnifying glass (36).

5. The concrete bending tester according to claim 4, wherein: the installing part (37) comprises a sleeve (371) arranged at the top of the installing block (35), an adjusting bolt (372) is vertically arranged on the side wall of the sleeve (371), the installing rod (361) of the magnifier (36) penetrates through the sleeve (371), and the end of the adjusting bolt (372) abuts against the side wall of the installing rod (361).

6. The concrete bending tester according to claim 5, wherein: the mounting rod (361) is provided with a reference scale mark (362).

7. The concrete bending tester according to claim 5, wherein: the end part of the adjusting bolt (372) positioned outside the sleeve (371) is provided with a star-shaped plastic head (373).

8. The concrete bending tester according to claim 1, wherein: the support plate (61) with push pedal (65), push pedal (65) with all be provided with bellows (7) between biax motor (62), bellows (7) cover is established lead screw (63) outside.