CN219455703U - Gypsum leveling device for concrete test block compression test - Google Patents

Abstract

The utility model relates to a gypsum leveling device for a concrete test block compression test, which comprises a base, a supporting device arranged on the base and used for supporting the concrete test block, and a leveling device used for leveling the concrete test block in the supporting device, wherein the leveling device comprises an upper leveling device and a lower leveling device; the upper leveling device comprises an upper pressing plate, an upper leveling mechanism and an upper level gauge, wherein the upper leveling mechanism is used for adjusting the levelness of the upper pressing plate; the lower leveling device comprises a lower leveling mechanism and a lower level meter, wherein the lower leveling mechanism is used for adjusting the levelness of the base. The gypsum leveling device can solve the problems of difficult manual leveling, large leveling precision error, low leveling efficiency and the like in the traditional gypsum leveling device, can adapt to test blocks with different heights, and has wider application range.

Description

Gypsum leveling device for concrete test block compression test

Technical Field

The utility model relates to experimental equipment, in particular to a gypsum leveling device for a concrete test block compression test.

Background

As an important test for concrete materials, in the concrete compression test, gypsum is required to be used for leveling a concrete test block according to the related requirements of the specification GB/T50081-2019, and the effect is to ensure that the top and bottom of the test piece are parallel in the vertical direction, thereby ensuring that the test piece is subjected to uniform pressure when pressure is applied. If the top or bottom of the test piece is not parallel, it may result in the test piece being subjected to uneven pressure, thereby affecting the accuracy of the experimental results.

The traditional gypsum leveling method is that a test piece is firstly placed on a leveling plate, then a layer of gypsum paste is respectively coated on the top and the bottom of the test piece, and the test piece is embedded in the gypsum paste before the gypsum paste is completely dried, so that the test piece is ensured to be parallel to the leveling plate. The gypsum paste will dry completely in a few hours, fixing the test piece in place. In this process, care should be taken to avoid the use of excessive gypsum paste at the sides and corners of the test piece as much as possible so as not to affect the compressive strength of the test piece.

At present, a related experimental device which is temporarily incomplete is mostly observed by naked eyes of an experimenter to see whether the upper surface and the lower surface are parallel or not, and further, the experimenter is provided with a level meter and other instruments for manual leveling, namely, the level requirement is ensured by repeatedly pressing a flat plate, and the behavior easily causes empty gypsum and overflow gypsum, so that the pollution of a concrete test block is caused; meanwhile, in the known experimental process, the experimenter usually needs to wait for the bottom gypsum paste to dry before inverting the test block and readjusting the bottom plate level before using the gypsum for leveling again. Although the concrete test block mold has standard uniformity, as one surface of the concrete test block always needs to be manually smoothed in the pouring process, the difference of the height of the test block is easy to be caused, and the error even exceeds 10mm in extreme cases, so that the influence is not negligible in academic research pursuing small errors.

Aiming at the problems, the development of the gypsum leveling device which can be quickly leveled and can ensure the accuracy of the gypsum surface level is of great significance.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the gypsum leveling device for the concrete test block compression test, which can solve the problems of manual leveling difficulty, large leveling precision error, low leveling efficiency and the like in the traditional gypsum leveling device, and can adapt to test blocks with different heights, and has wider application range.

The technical scheme for solving the problems in the prior art is as follows:

the gypsum leveling device for the concrete test block compression test comprises a base, a supporting device arranged on the base and used for supporting the concrete test block, and a leveling device used for leveling the concrete test block in the supporting device, wherein the leveling device comprises an upper leveling device and a lower leveling device; the upper leveling device comprises an upper pressing plate, an upper leveling mechanism and an upper level gauge, wherein the upper leveling mechanism is used for adjusting the levelness of the upper pressing plate; the lower leveling device comprises a lower leveling mechanism and a lower level meter, wherein the lower leveling mechanism is used for adjusting the levelness of the base.

Preferably, the base comprises an overhanging platform and a disc, wherein the disc is provided with a clamping groove.

Preferably, the number of the clamping grooves is three, and the three groups of clamping grooves are circumferentially arranged on the disc; the included angle between two adjacent groups of clamping grooves is 120 degrees.

Preferably, each group of clamping grooves is two, and the two clamping grooves are arranged along the radial direction of the disc.

Preferably, the specification of the clamping groove is 20mm long, 5mm wide and 5mm deep.

Preferably, the supporting device is composed of a supporting ring and supporting legs, wherein the supporting ring comprises a central circular ring and an overhanging part arranged outside the central circular ring; the upper end of the supporting leg is hinged to the overhanging part, and the lower end of the supporting leg is provided with a matching part matched with the clamping groove.

Preferably, the overhanging parts are three groups, and the three groups of overhanging parts are circumferentially arranged on the central ring; the included angle between two adjacent groups of overhanging parts is 120 degrees; correspondingly, the supporting legs are also in three groups.

Preferably, the upper pressing plate is a circular flat plate.

Preferably, the upper leveling mechanism and the lower leveling mechanism are consistent in structure and comprise adjusting knobs, adjusting bolts are arranged on the adjusting knobs, the adjusting bolts of the upper leveling mechanism are arranged on the central circular ring, and bolt holes matched with the adjusting bolts are formed in the central circular ring; the adjusting bolt of the lower leveling mechanism is arranged on the disc, and the disc is also provided with a bolt hole matched with the adjusting bolt.

Preferably, the side of the adjusting knob is provided with vertical lines.

Compared with the prior art, the utility model has the following beneficial effects:

1. the gypsum leveling device for the concrete test block compression test can ensure that the upper gypsum surface and the lower gypsum surface of the concrete test block are horizontal and parallel to each other, and further reduce the experimental result error caused by the specification error of the concrete test block.

2. The gypsum leveling device for the concrete test block compression test has the function of quick leveling, and compared with the traditional leveling mode, the leveling process has scientific guiding significance, and the gypsum leveling efficiency in the test process can be improved.

Drawings

Fig. 1-3 are schematic structural views of a gypsum leveling device for concrete block compression testing according to three different perspectives of the present utility model.

Fig. 4 is a schematic structural view of the base.

Fig. 5 is a schematic structural view of the supporting device.

Detailed Description

The present utility model will be described in further detail with reference to examples and drawings, but embodiments of the present utility model are not limited thereto.

Referring to fig. 1 to 5, the gypsum leveling device for a concrete test block compression test of the present utility model includes a base 1, a supporting device 2 provided on the base 1 for supporting a concrete test block 10, and a leveling device for leveling the concrete test block 10 in the supporting device 2.

Referring to fig. 1-5, the base 1 is composed of a disc 11 and an overhanging platform 12, each having a thickness of 10mm and being made of a material with high rigidity, and having the ability to resist considerable deformation; wherein, the disc 11 is provided with a clamping groove 13; in this embodiment, the number of the clamping grooves 13 is three, and the three groups of clamping grooves 13 are circumferentially arranged on the disc 11; the included angle between two adjacent groups of clamping grooves 13 is 120 degrees; each group of clamping grooves 13 is two, and the two clamping grooves 13 are arranged along the radial direction of the disc 11; the specification of the clamping groove 13 is 20mm long, 5mm wide and 5mm deep.

Referring to fig. 1-5, the supporting device 2 is composed of a supporting ring 8 and supporting legs 9, wherein the supporting ring 8 has a thickness of 10mm, and the supporting ring 8 comprises a central circular ring and an overhanging part arranged outside the central circular ring; the upper ends of the supporting legs 9 are hinged to the overhanging parts, and the lower ends of the supporting legs are provided with matching parts matched with the clamping grooves 13; in this embodiment, the overhanging portions are three groups, and the three groups of overhanging portions are circumferentially arranged on the central ring; the included angle between two adjacent groups of overhanging parts is 120 degrees; correspondingly, the supporting feet 9 are also three groups; in addition, in the present embodiment, the main body of the supporting leg 9 is a cuboid, and one end of the main body is provided with a through hole with the same specification as the overhanging portion (i.e., the side edge of the overhanging portion is provided with a through hole); the end is a round angle, and the other end of the supporting leg 9 is a chamfer; the supporting ring 8 is connected with the supporting legs 9 through the overhanging parts of the supporting ring 8, and the supporting legs 9 are further hinged in a rivet perforation mode, so that the supporting legs 9 have a rotating function relative to the overhanging parts of the supporting ring 8, the height of the supporting device 2 can be adjusted, and when the concrete test blocks 10 with different heights face each other, the positions of the supporting legs 9 in different clamping grooves 13 can be adjusted, so that the adjustment of the larger horizontal plane height can be further performed.

Referring to fig. 1-5, the leveling device includes an upper leveling device and a lower leveling device; the upper leveling device comprises an upper pressing plate 3, an upper leveling mechanism 7 for adjusting the levelness of the upper pressing plate 3 and an upper level meter 5; the lower leveling device comprises a lower leveling mechanism 4 and a lower level 6 for adjusting the levelness of the base 1, wherein the upper leveling mechanism 7 and the lower leveling mechanism 4 are identical in structure and comprise an adjusting knob and an adjusting bolt, and the adjusting knob 71 and the adjusting bolt 72 are arranged in the upper leveling mechanism 7; the lower leveling mechanism 4 is provided with an adjusting knob 41 and an adjusting bolt 42; an adjusting bolt is arranged on the adjusting knob, wherein the adjusting bolt 72 of the upper leveling mechanism 7 is arranged on the central circular ring, and a bolt hole matched with the central circular ring is arranged on the central circular ring; the adjusting bolt 42 of the lower leveling mechanism 4 is arranged on the disc 11, and the disc 11 is also provided with a bolt hole matched with the adjusting bolt; in this embodiment, the number of the bolt holes is three, the three bolt holes are arranged circumferentially with the center of the disc 11 or the center ring as the center, the included angle between two adjacent bolt holes is 120 degrees, and the corresponding adjusting knobs and adjusting bolts in the upper leveling mechanism 7 and the lower leveling mechanism 4 are three groups; wherein, the included angle between each group of adjusting knob 41 and adjusting bolt 42 in the lower leveling mechanism 4 and the adjacent clamping groove 13 is 60 degrees.

In this embodiment, the overhanging platform 12 is formed by a regular rectangle, and is located on an extension line between the center of one group of clamping grooves 13 and the center of the disc 11, and is rigidly connected to the disc 11, and meanwhile, the upper surfaces of the disc 11 and the overhanging platform 12 are located on the same horizontal plane, and the connection is relatively smooth; the upper pressing plate 3 is a round flat plate.

Finally, if the concrete test block 10 is not a cylinder but a prism, the ring part in the supporting ring can be changed into a square part of the supporting frame, and the position of the clamping groove on the base can be properly changed, so that the same effect can be achieved.

Referring to fig. 1 to 5, the gypsum leveling device for a concrete test block compression test of the present utility model has the following working principle:

it is necessary to place the base 1 on the stable ground first, place the lower level 6 on the overhanging platform 12 of the base 1, and make the air bubble in the lower level 6 completely locate at the center of the lower level 6 by turning the adjusting knob 41 in the lower leveling device according to the deviation position of the air bubble in the level. Then, a certain amount of gypsum paste is coated on the disc 11 after the gypsum separating agent is coated, then a concrete test block is placed, the height of the concrete test block is visually checked, a proper clamping groove 13 is selected, then the supporting leg 9 of the supporting device is stably supported in the clamping groove 13, then the upper pressing plate 3 is placed, so that the upper pressing plate 3 is supported on the adjusting knob 71 of the upper leveling device, then after the upper leveling device 5 is placed on the upper pressing plate 3, the upper pressing plate 3 is leveled in a consistent manner with the lower leveling device (namely, by rotating the adjusting knob 71 in the upper leveling device, air bubbles in the lower leveling device 6 are completely positioned at the center of the lower leveling device), after leveling, the upper pressing plate 3 is removed, a certain amount of gypsum paste is coated on the top surface of the concrete test block, then the upper pressing plate 3 is replaced (the lower surface of the upper pressing plate 3 can be coated with the gypsum separating agent), so that the lower surface of the upper pressing plate 3 compresses the top surface of the concrete test block, and after the gypsum is dried, the upper pressing plate 3 and the bottom surface of the concrete test block can be guaranteed to be parallel after the gypsum is dried.

The foregoing is illustrative of the present utility model, and is not to be construed as limiting thereof, but rather as merely providing for the purpose of teaching herein before described various modifications, alternatives, variations and alternatives, as well as variations and alternatives, without departing from the spirit and principles of the utility model.

Claims (10)

1. The gypsum leveling device for the concrete test block compression test is characterized by comprising a base, a supporting device and a leveling device, wherein the supporting device is arranged on the base and used for supporting the concrete test block, and the leveling device is used for leveling the concrete test block in the supporting device; the upper leveling device comprises an upper pressing plate, an upper leveling mechanism and an upper level gauge, wherein the upper leveling mechanism is used for adjusting the levelness of the upper pressing plate; the lower leveling device comprises a lower leveling mechanism and a lower level meter, wherein the lower leveling mechanism is used for adjusting the levelness of the base.

2. The gypsum leveling device for a concrete test block compression test as recited in claim 1, wherein the base comprises an overhanging platform and a disk, wherein a clamping groove is provided on the disk.

3. The gypsum leveling device for a concrete test block compression test according to claim 2, wherein the clamping grooves are three groups, and the three groups of clamping grooves are circumferentially arranged on the disc; the included angle between two adjacent groups of clamping grooves is 120 degrees.

4. A gypsum leveling device for a concrete test block compression test as claimed in claim 3, wherein there are two clamping grooves per set, the two clamping grooves being arranged along the radial direction of the disk.

5. The gypsum leveling device for a concrete test block compression test as recited in claim 4, wherein the clamping groove has a specification of 20mm in length, 5mm in width and 5mm in depth.

6. The gypsum leveling device for a concrete block compression test as recited in claim 4, wherein the support device is composed of a support ring and support legs, wherein the support ring comprises a central ring and an overhanging portion arranged outside the central ring; the upper end of the supporting leg is hinged to the overhanging part, and the lower end of the supporting leg is provided with a matching part matched with the clamping groove.

7. The gypsum leveling device for a concrete block compression test as recited in claim 6, wherein the overhanging portions are in three groups, the three groups of overhanging portions being circumferentially arranged on the central ring; the included angle between two adjacent groups of overhanging parts is 120 degrees; correspondingly, the supporting legs are also in three groups.

8. The gypsum leveling device for a concrete test block compression test as recited in claim 1, wherein the upper platen is a circular flat plate.

9. The gypsum leveling device for a concrete block compression test according to claim 7, wherein the upper leveling mechanism and the lower leveling mechanism are identical in structure and comprise adjusting knobs, adjusting bolts are arranged on the adjusting knobs, the adjusting bolts of the upper leveling mechanism are arranged on the central circular ring, and bolt holes matched with the adjusting bolts are formed in the central circular ring; the adjusting bolt of the lower leveling mechanism is arranged on the disc, and the disc is also provided with a bolt hole matched with the adjusting bolt.

10. The gypsum leveling device for a concrete test block compression test according to claim 9, wherein the side surface of the adjusting knob is provided with vertical lines.