CN211784753U

CN211784753U - Experimental centering device of concrete sample compressive strength

Info

Publication number: CN211784753U
Application number: CN202020424643.XU
Authority: CN
Inventors: 杨兴明
Original assignee: Guangdong Rongquanhui Concrete Co ltd
Current assignee: Guangdong Rongquanhui Concrete Co ltd
Priority date: 2020-03-28
Filing date: 2020-03-28
Publication date: 2020-10-27
Anticipated expiration: 2030-03-28

Abstract

The utility model belongs to the technical field of the technique of concrete compressive strength test equipment and specifically relates to a centering device that concrete sample compressive strength is experimental is related to, including the backing plate, the backing plate can be dismantled and connect in one side of work platform, be provided with two locating plates that are used for centre gripping concrete sample on the backing plate, two locating plates are parallel to each other, be provided with the regulating part that is used for driving two locating plates and draws close relatively between two locating plates and the backing plate, all be provided with the stopper that is used for injecing concrete sample position on two locating plates, the both sides surface that two locating plates are relative all provided with the spacing groove, and the length direction setting of locating plate is followed to the spacing groove, the stopper slides relatively on the spacing groove that corresponds, be provided with the fixed subassembly that is used. The distance between two locating plates and the distance between two stopper are adjusted according to the size of concrete sample's size, and it has the advantage of quick location.

Description

Experimental centering device of concrete sample compressive strength

Technical Field

The utility model belongs to the technical field of the technique of concrete compressive strength test equipment and specifically relates to a centering device that concrete test piece compressive strength is experimental is related to.

Background

With the rapid development of the economy of China, the range of engineering infrastructure is continuously expanded. The quality safety of the engineering construction not only relates to the use function and the service life of the engineering construction, but also directly influences the property and the life safety of the masses of people. Concrete is a building material with the widest application and the largest using amount in civil engineering, so the quality control of the concrete is particularly important, the concrete strength is one of the indexes of the quality of the concrete, and the cubic compressive strength of the concrete is the most common compressive strength expression mode.

In the prior art, a concrete compression test needs to place a three-dimensional test piece in the center of an operation platform of a compression testing machine for testing, the compression testing machine is generally a portal frame, a compression bar which moves up and down is arranged on the portal frame, the compression bar moves up and down on the portal frame through a driving motor, the lower end of the compression bar is connected with an upper pressing block, a working platform is arranged on the upper end face of a machine table, and the working platform is located right above the upper pressing plate. During the use, place the concrete sample on work platform, open driving motor and make the depression bar remove downwards, install the top board at the depression bar lower extreme and will remove downwards along with the depression bar together, extrude the concrete sample. During normal operation, measurements are taken through the straightedge to determine if the test block is centered on the work platform.

The above prior art solutions have the following drawbacks: in the process of the compression test, the number of test pieces of the concrete compression test is often large, a certain time needs to be spent in centering measurement by utilizing the ruler at each time, the test workload is large, and it is difficult to ensure that each test piece is rapidly and accurately placed at the central position, so that a plurality of concrete test pieces are in a bias state, and the compression strength has a positioned deviation with a true value.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a concrete sample compressive strength test's centering device, its advantage that has quick location.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a concrete sample compressive strength test centering device, includes the backing plate, the backing plate can be dismantled and connect in one side of work platform, be provided with two locating plates that are used for centre gripping concrete sample on the backing plate, two the locating plate is located work platform is last, two the locating plate is parallel to each other, two the locating plate with be provided with between the backing plate and be used for driving two the regulating part that the locating plate closed up simultaneously relatively all is two all be provided with the stopper that is used for injecing the concrete sample position on the locating plate, and the both sides surface that two locating plates are relative all is provided with the spacing groove, just the spacing groove is followed the length direction of locating plate sets up, two the stopper is corresponding relative sliding on the spacing groove, the stopper with be provided with between the locating plate and be used for fixing the fixed.

By adopting the technical scheme, the base plate is detachably connected to one side of the working platform, so that the base plate can be conveniently detached to clean the scraps on the working platform; according to the size of the concrete sample, two positioning plates are arranged on the base plate, the adjusting piece can be driven to move through the two positioning plates, so that the two positioning plates can be relatively close to each other, the distance between the two positioning plates can be adjusted simultaneously, meanwhile, the two limiting blocks slide relatively, the concrete sample can be limited, and the corresponding limiting blocks are fixed through the fixing assemblies; planning out the space of placing of concrete sample centering under the combined action of two stoppers and two locating plates, making the center of placing the space aim at with work platform's center, the concrete sample directly places can the centering in placing the space, and then makes the concrete sample fix a position on work platform fast, and is simple swift.

The utility model discloses further set up to: the adjusting part is a threaded rod, the threaded rod is horizontally arranged, the threaded rod is connected to the base plate in a bearing mode, the threaded rod comprises a forward threaded section and a reverse threaded section, the two positioning plates are provided with threaded holes which are arranged in a penetrating mode, the forward threaded section and the reverse threaded section are respectively in threaded connection with the threaded holes in a corresponding mode, the two positioning plates are provided with guide parts used for guiding the two positioning plates between the two positioning plates.

Through adopting above-mentioned technical scheme, rotate through the drive screw thread during the use, because be provided with forward thread section and reverse thread section on the threaded rod, make two locating plates be close to simultaneously or keep away from, threaded rod and screw hole threaded connection, when the stall threaded rod, two locating plates stop relative motion, make two locating plates fix in required position, and then realize the effect of the distance adjustment between two locating plates.

The utility model discloses further set up to: the guide piece is a guide rod, the guide rod is horizontally arranged on the base plate, and the guide rod sequentially penetrates through the two positioning plates and the two positioning plates which are connected in a sliding mode.

Through adopting above-mentioned technical scheme, the effect of guide bar has played the guide effect to two locating plates, makes two locating plates can be close to relatively or be linear motion when keeping away from, avoids two locating plates upset to walk the position.

The utility model discloses further set up to: one end of the threaded rod is fixedly connected with a hand wheel.

Through adopting above-mentioned technical scheme, the staff of being convenient for of setting up of hand wheel rotates the threaded rod, through this setting, can realize conveniently controlling threaded rod pivoted effect.

The utility model discloses further set up to: the side wall of the backing plate far away from the working platform and the surfaces of the two positioning plates far away from the working platform are provided with a plurality of scale marks.

Through adopting above-mentioned technical scheme, the staff of being convenient for of setting up of scale mark removes the relative distance of two locating plates, improves the accuracy of device to the concrete test piece centering.

The utility model discloses further set up to: the fixing assembly comprises a positioning rod and a nut, the positioning rod is vertically connected to the limiting block, a chute which runs through the limiting groove is formed in one chute wall of the limiting groove, the chute is arranged along the length direction of the positioning plate, the positioning rod runs through the chute and extends out of the chute, and the nut is sleeved on the positioning rod and is in threaded connection with the positioning rod.

Through adopting above-mentioned technical scheme, the locating lever has played the guide effect to the stopper, makes the stopper difficult not hard up from the spacing groove and breaks away from, and locating lever and nut threaded connection can be with the stable required position of fixing at the spacing groove of stopper, have strengthened the stability between stopper and the locating lever.

The utility model discloses further set up to: the base plate is provided with a groove towards one side surface of the working platform, one side of the working platform is provided with a groove which is matched with the groove in an inserting mode, a bolt is arranged on the base plate, one side surface of the base plate, which is far away from the positioning plate, is provided with a threaded hole corresponding to the bolt, a butt joint block used for abutting against the tight working platform is arranged in the groove, the butt joint block corresponds to the bolt one to one, the bolt penetrates through the positioning hole and stretches into the groove, the groove is fixedly connected with the butt joint block, and the bolt is in threaded connection with the threaded hole.

Through adopting above-mentioned technical scheme, rotate the bolt and can make the butt piece support tight work platform, the stability of backing plate on work platform is decided in the reinforcing.

The utility model discloses further set up to: and a rubber pad is arranged on the surface of one side, close to the working platform, of the abutting block.

Through adopting above-mentioned technical scheme, the frictional force between work platform and the backing plate can be increased in the setting of rubber pad.

To sum up, the utility model discloses a beneficial technological effect does:

1. the method comprises the following steps that a worker does not need to use a ruler to measure the length and the width required by a concrete sample on a working platform and then center the concrete sample, an adjusting piece is driven to adjust the distance between two positioning plates according to the size of the calculated concrete sample, two limiting blocks are moved to enable the two limiting blocks to slide relatively, the distance between the two limiting blocks is adjusted, a placing space is formed between the two positioning plates and the two limiting blocks, the concrete sample is directly placed in the placing space to be centered with the working platform, and the concrete sample is quickly positioned on the working platform;

2. the threaded rod is in threaded connection with the threaded hole, when the threaded rod stops rotating, the two positioning plates stop moving relatively, the two positioning plates are fixed at required positions, and the effect of adjusting the distance between the two positioning plates is further realized;

3. the positioning rod plays a role in guiding the limiting block, so that the limiting block is not easy to loosen and separate from the limiting groove, the positioning rod is in threaded connection with the nut, the limiting block can be stably fixed at a required position of the limiting groove, and the stability between the limiting block and the positioning rod is enhanced;

4. the arrangement of the scale marks is convenient for a worker to move the distance between the two positioning plates, and the centering accuracy of the device on the concrete test piece is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the overall assembly relationship of the device in the embodiment of the present invention.

In the figure, 1, a working platform; 2. a base plate; 3. mounting a plate; 4. a hand wheel; 5. a bolt; 6. a threaded rod; 7. a guide bar; 8. a nut; 9. positioning a rod; 10. a limiting block; 11. a concrete sample; 12. positioning a plate; 13. scale lines; 14. a chute; 15. a limiting groove; 16. a threaded hole; 17. a centerline; 18. a butting block; 19. a rubber pad; 20. positioning holes; 21. and (4) a groove.

Detailed Description

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

Referring to fig. 1, for the utility model discloses a concrete sample 11 compressive strength test centering device, including backing plate 2, backing plate 2 is the cuboid form and sets up along work platform 1's length direction. The working platform 1 is marked with two mutually perpendicular and intersected central lines 17, the central lines 17 are respectively arranged along the length direction and the width direction of the working platform 1, the centers of the two intersected central lines 17 are the centers of the working platform 1, and the backing plate 2 is arranged on one side of the working platform 1.

Referring to fig. 1, specifically, in order to enable the concrete sample 11 to be quickly positioned at the center of the working platform 1, two positioning plates 12 for clamping the concrete sample 11 are arranged on the backing plate 2, and the two positioning plates 12 are in a long strip shape and are parallel to each other. The two positioning plates 12 are both located above the working platform 1, and one ends of the two positioning plates 12 extend to one end of the working platform 1 far away from the backing plate 2. An adjusting piece used for driving the two positioning plates 12 to move close relatively is arranged between the two positioning plates 12 and the backing plate 2, the adjusting piece is a threaded rod 6, the backing plate 2 is provided with two mounting plates 3, and the two mounting plates 3 are respectively welded on two sides of the backing plate 2. Threaded rod 6 is the level setting, and the one end of threaded rod 6 and one of them mounting panel 3 bearing connection, and the other end of threaded rod 6 runs through another mounting panel 3 and stretches out outside another mounting panel 3. Threaded rod 6 includes forward thread section and reverse thread section, all is provided with the screw hole 16 that is the level setting on two locating plates 12, and screw hole 16 is the setting of running through. The forward thread section and the reverse thread section are in one-to-one correspondence with the two threaded holes 16 respectively, the forward thread section and the reverse thread section are in threaded connection with the corresponding threaded holes 16 respectively, the two positioning plates 12 can be driven to be relatively close to or far away from each other simultaneously by rotating the threaded rod 6, and then the distance between the two positioning plates 12 can be conveniently adjusted. In addition, one end fixedly connected with hand wheel 4 of threaded rod 6, and then the staff of being convenient for rotates threaded rod 6.

Referring to fig. 1, a guide member for guiding the two positioning plates 12 is provided between the two positioning plates 12 and the backing plate 2, and the guide member is a guide rod 7. The guide rod 7 is horizontally arranged on the backing plate 2, and the guide rod 7 sequentially penetrates through the two positioning plates 12 and is connected with the two positioning plates 12 in a sliding manner.

Referring to fig. 1 and 2, further, two positioning plates 12 are provided with limiting blocks 10 for limiting the position of the concrete sample 11, two opposite side surfaces of the two positioning plates 12 are provided with limiting grooves 15, the limiting grooves 15 are arranged along the length direction of the positioning plates 12, and the length of each limiting groove 15 is equal to the length of a central line 17 parallel to the positioning plates 12. The two limiting blocks 10 slide relatively in the corresponding limiting grooves 15. Simultaneously, be provided with the fixed subassembly that is used for fixed stopper 10 between stopper 10 and the locating plate 12, fixed subassembly includes locating lever 9 and nut 8, locating lever 9 is vertical setting and welds in a side surface that work platform 1 was kept away from to stopper 10, a cell wall that work platform 1 was kept away from to spacing groove 15 is seted up and is the spout 14 that runs through the setting, spout 14 sets up along the length direction of spacing groove 15, locating lever 9 runs through spout 14 and stretches out outside spout 14, locating lever 9 slides with spout 14 and is connected. The nut 8 is sleeved on the positioning rod 9 and is in threaded connection with the positioning rod 9.

Referring to fig. 1 and 2, further, in order to improve the accuracy of adjusting the distance between two positioning plates 12 and the distance between two limiting blocks 10, a side wall of the backing plate 2 away from the working platform 1 and a side surface of the two positioning plates 12 away from the working platform 1 are provided with a plurality of scale marks 13, the scale marks 13 arranged on the backing plate 2 are arranged along the length direction of the backing plate 2, and the scale marks 13 arranged on the positioning plates 12 are arranged along the length direction of the positioning plates 12. When a concrete sample 11 needs to be placed in the center of the working platform 1, the two positioning plates 12 are relatively close to each other by the aid of the first driving threaded rod 6 until the distance between the two positioning plates 12 is adjusted to be equal to the length of the concrete. Then two stopper 10 are removed, the distance between two stopper 10 is equal to the width of concrete sample 11, and the distance that two stopper 10 removed is the same, and utilize nut 8 fixed, concrete sample 11 can place in the space of placing that forms between two stopper 10 and two locating plates 12, makes concrete sample 11 place and the center on the work platform this moment.

Referring to fig. 1 and 2, in addition, in order to clean the debris on the work platform 1 conveniently, the backing plate 2 is detachably connected to one side of the work platform 1, in this embodiment, a groove 21 is formed in a surface of one side, facing the work platform 1, of the backing plate 2, the groove 21 is arranged along the length direction of the backing plate 2, and one end of the work platform 1 is matched with the groove 21 in an inserting manner. Meanwhile, the backing plate 2 is provided with two bolts 5, and the two bolts 5 are respectively positioned on two sides of the backing plate 2 in order to stably fix the backing plate 2 on the working platform 1. The side of the backing plate 2 far away from the positioning plate 12 is provided with positioning holes 20 corresponding to the bolts 5, and each positioning hole 20 penetrates through one groove wall of the groove 21. Two horizontally arranged abutting blocks 18 are arranged in the groove 21, and the abutting blocks 18 correspond to the bolts 5 one by one. The bolt 5 penetrates through the corresponding positioning hole 20 and extends into the groove 21 to be fixedly welded with the abutting block 18, and the bolt 5 is in threaded connection with the positioning hole 20. The worker rotates the bolt 5 to make the abutting block 18 rotate until abutting against the working platform 1, so that the groove 21 is far away from one groove wall of the bolt 5 and the abutting block 18 faces the surface of the working platform 1 and abuts against the working platform 1, and further the backing plate 2 is fixed on the working platform 1. Further, in order to increase the frictional force between the work platform 1 and the abutment block 18, a rubber pad 19 is provided on one side surface of the abutment block 18 close to the work platform 1.

The implementation principle of the embodiment is as follows: the base plate 2 is provided with a threaded rod 6, the threaded rod 6 comprises a forward threaded section and a reverse threaded section, the two positioning plates 12 are relatively close to or far away from each other at the same time by driving the threaded rod 6 to rotate, and then the distance between the two positioning plates 12 is adjusted, so that the distance between the two positioning plates 12 is equal to the length of the concrete sample 11;

simultaneously, utilize stopper 10 to slide along the horizontal direction on corresponding locating plate 12, and utilize nut 8 and locating lever 9 threaded connection to make nut 8 support tightly on locating plate 12, and then adjust the distance between two stoppers 10, make the distance between two stoppers 10 equal to concrete sample 11 width, and the distance that two stoppers 10 removed equals, and then will place the space that concrete formed at two locating plates 12 and two stoppers 10, the center and the concrete sample 11 centering of work platform 1 this moment, and then make concrete sample 11 fix a position fast.

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 sample compressive strength test's centering device, includes backing plate (2), its characterized in that: the backing plate (2) is detachably connected to one side of the working platform (1), two positioning plates (12) used for clamping a concrete test piece (11) are arranged on the backing plate (2), the two positioning plates (12) are positioned on the working platform (1), the two positioning plates (12) are parallel to each other, an adjusting piece used for driving the two positioning plates (12) to be relatively close simultaneously is arranged between the two positioning plates (12) and the backing plate (2), limiting blocks (10) used for limiting the position of the concrete test piece (11) are arranged on the two positioning plates (12), limiting grooves (15) are arranged on the surfaces of two opposite sides of the two positioning plates (12), the limiting grooves (15) are arranged along the length direction of the positioning plates (12), and the two limiting blocks (10) relatively slide on the corresponding limiting grooves (15), a fixing component used for fixing the limiting block (10) is arranged between the limiting block (10) and the positioning plate (12).

2. The centering device for the compression strength test of the concrete sample according to claim 1, is characterized in that: the regulating part is threaded rod (6), threaded rod (6) are the level setting, just threaded rod (6) bearing connect in on backing plate (2), threaded rod (6) are including forward thread section and reverse thread section, two locating plate (12) all are provided with and are screw hole (16) that run through the setting, the forward thread section with reverse thread section respectively with correspond screw hole (16) threaded connection, two locating plate (12) with be provided with between backing plate (2) and be used for two the guide piece of locating plate (12) direction.

3. The centering device for the compression strength test of the concrete sample according to claim 2, is characterized in that: the guide piece is guide rod (7), guide rod (7) be the level set up in on backing plate (2), guide rod (7) run through two in proper order locating plate (12) and two locating plate (12) are connected that slides.

4. The centering device for the compression strength test of the concrete sample according to claim 2, is characterized in that: one end of the threaded rod (6) is fixedly connected with a hand wheel (4).

5. The centering device for the compression strength test of the concrete sample according to claim 1, is characterized in that: the side wall of the backing plate (2) far away from the working platform (1) and the side surface of the positioning plate (12) far away from the working platform (1) are provided with a plurality of scale marks (13).

6. The centering device for the compression strength test of the concrete sample according to claim 1, is characterized in that: the fixing assembly comprises a fixing rod (9) and a nut (8), the fixing rod (9) is vertically connected to the limiting block (10), a groove wall of the limiting groove (15) is provided with a sliding groove (14) which runs through the limiting groove, the sliding groove (14) is arranged along the length direction of the positioning plate (12), the fixing rod (9) runs through the sliding groove (14) and extends out of the sliding groove (14), and the nut (8) is sleeved on the fixing rod (9) and is in threaded connection with the fixing rod (9).

7. The centering device for the compression strength test of the concrete sample according to claim 1, is characterized in that: backing plate (2) are provided with recess (21) towards one side surface of work platform (1), one side setting of work platform (1) with recess (21) grafting cooperation, be provided with bolt (5) on backing plate (2), backing plate (2) are kept away from one side surface of locating plate (12) is provided with screw hole (16) that correspond with bolt (5), be provided with butt piece (18) that are used for supporting tight work platform (1) in recess (21), butt piece (18) with bolt (5) one-to-one, bolt (5) run through locating hole (20) and stretch into in recess (21) with butt piece (18) fixed connection, bolt (5) with screw hole (16) threaded connection.

8. The centering device for the compression strength test of the concrete sample according to claim 7, is characterized in that: and a rubber pad (19) is arranged on the surface of one side, close to the working platform (1), of the abutting block (18).