CN215297399U

CN215297399U - Concrete shrinkage test device

Info

Publication number: CN215297399U
Application number: CN202121695509.4U
Authority: CN
Inventors: 钟志刚; 章贤斌
Original assignee: Hangzhou Qianshen Commercial Concrete Co ltd
Current assignee: Hangzhou Qianshen Commercial Concrete Co ltd
Priority date: 2021-07-24
Filing date: 2021-07-24
Publication date: 2021-12-24
Anticipated expiration: 2031-07-24

Abstract

The utility model belongs to the technical field of concrete test device and specifically relates to a concrete shrinkage test device is related to. The test device comprises a base, the rigid coupling is connected with two support frames on the base, two be connected with the vaulting pole between the support frame, the bracing piece is connected with two mounting panels that are used for installing the test piece, mounting panel movable sleeve is established on the bracing piece, still be provided with on the base and support tight mechanism and accredited testing organization, support tight mechanism including be used for with the support board of the one end butt of test piece, support the board and be connected with the base, accredited testing organization includes test portion, test portion is including the amesdial that is used for with the other end butt of test piece, the amesdial is connected with the base. The utility model discloses the effect of the accuracy of improvement concrete shrinkage test has.

Description

Concrete shrinkage test device

Technical Field

The utility model belongs to the technical field of concrete test device and specifically relates to a concrete shrinkage test device is related to.

Background

Concrete is a general term for engineering composite materials in which aggregate such as gravel is cemented into a whole by a cementing material such as cement. It is widely applied to civil engineering. The concrete can deform under the action of load and temperature and humidity, and mainly comprises elastic deformation, plastic deformation, shrinkage, temperature deformation and the like. When the natural environment of the concrete changes, the concrete can expand and contract, and the expansion or contraction of the concrete can easily cause the cracking of the wall body, so that the concrete test piece needs to be subjected to a contractility test.

The utility model patent with the publication number of CN207114544U discloses a concrete shrinkage test device. The testing device comprises a base, wherein a first supporting seat and a second supporting seat are respectively arranged at two ends of the base in the length direction, at least two rotating rollers which are in contact with the lower surface of a concrete block are arranged between the first supporting seat and the second supporting seat, the rotating rollers are uniformly distributed along the length direction of the base, the rotating rollers are rotatably connected with the upper surface of the base, a fixing structure abutted against concrete is arranged on the first supporting seat, and a digital display dial indicator abutted against a concrete ejector rod is arranged on the second supporting seat.

When the test device is used for testing the contractility, a concrete test piece needs to be placed on the rotating roller, and the concrete can deform only by overcoming the friction between the concrete test piece and the rotating roller, so that the structure for testing the contractility of the concrete is not accurate enough.

SUMMERY OF THE UTILITY MODEL

In order to improve the accuracy of concrete shrinkage test, the utility model provides a concrete shrinkage test device.

The utility model provides a pair of concrete shrinkage test device adopts following technical scheme:

the utility model provides a concrete shrinkage test device, includes the base, the rigid coupling is connected with two support frames on the base, two be connected with the vaulting pole between the support frame, the bracing piece is connected with two mounting panels that are used for installing the test piece, mounting panel activity cover is established on the bracing piece, still be provided with on the base and support tight mechanism and accredited testing organization, support tight mechanism including be used for with the support board of the one end butt of test piece, support the board and be connected with the base, accredited testing organization includes test portion, test portion is including the amesdial that is used for with the other end butt of test piece, the amesdial is connected with the base.

Through adopting above-mentioned technical scheme, when carrying out the shrink nature test to the test piece, install the test piece between two mounting panels for support the one end butt of board and test piece in the tight mechanism, with the other end butt of the amesdial in the test section in the accredited testing organization and test piece, the shrink nature of reaction test piece is changed through the reading of amesdial. Through installing the test piece between two mounting panels for the test piece does not reduce the influence that frictional force warp to the test piece with base butt, makes the result of shrinkage test more accurate.

Optionally, the testing portion further includes a rotating block connected with the base, the measuring rod of the dial indicator penetrates through the rotating block, and the dial indicator is fixedly connected with the rotating block through the mounting fastener.

Through adopting above-mentioned technical scheme, wear to establish the amesdial in the turning block, fix through the installation fastener, realized that the installation of amesdial is fixed.

Optionally, a protective sleeve is sleeved outside the measuring rod of the dial indicator, the protective sleeve is arranged in the rotating block in a penetrating mode, and the mounting fastener is used for being abutted to the protective sleeve.

Through adopting above-mentioned technical scheme, if directly support the measuring stick of amesdial tightly through the installation fastener, can cause the amesdial atress, cause measuring error easily. Through setting up protective sleeve for the indirect measuring stick that tightly supports the amesdial of installation fastener reduces the influence of installation fastener to the amesdial.

Optionally, the test mechanism further comprises a sliding part, the sliding part comprises a sliding block connected with the base in a sliding mode, and the sliding block is connected with the rotating block.

Through adopting above-mentioned technical scheme, the drive sliding block slides, can drive the turning block and be close to the test piece for the measuring head and the test piece butt of amesdial carry out the shrinkage test to the test piece.

Optionally, the testing mechanism further comprises a lifting part, the lifting part comprises a lifting block connected with the sliding block in a sliding mode, and the lifting block is connected with the rotating block.

Through adopting above-mentioned technical scheme, the drive elevator slides for the elevator drives the turning block and goes up and down, can adjust the height of amesdial, tests different test pieces.

Optionally, the lifting block is rotatably connected with the rotating block, and the lifting block is fixedly connected with the rotating block through a rotating fastener.

Through adopting above-mentioned technical scheme, the drive turning block rotates, adjusts amesdial measuring head orientation, makes its perpendicular butt on the test piece, improves measurement accuracy, adjusts and carries out position fixing to the turning block through rotating the fastener after accomplishing.

Optionally, the abutting plate is connected with the base in a sliding manner.

Through adopting above-mentioned technical scheme, the drive supports the board and slides for support the board can with the test piece butt, testing mechanism can carry out the shrinkage test to the test piece. The drive is supported the board and is slided in the reverse direction, provides bigger space for the test piece installation, the installation of the test piece of being convenient for.

Optionally, the base lower extreme is connected with a plurality of leveling pieces that are used for carrying out the leveling to the base, leveling piece and base are connected.

By adopting the technical scheme, the leveling pieces are adjusted, the base is adjusted to the horizontal position, and errors caused by the inclination of the base to the measurement result are reduced.

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

1. the test piece is arranged between the two mounting plates, so that the influence of friction on the deformation of the test piece is reduced, and the result of a shrinkage test is more accurate;

2. the protective sleeve is arranged, so that the influence of the installation of the fastener on the dial indicator is reduced;

3. the lifting part is arranged, so that the height of the dial indicator can be adjusted, and different test pieces can be tested;

4. the direction of the measuring head of the dial gauge can be adjusted by rotationally connecting the lifting block with the rotating block, so that the measuring head of the dial gauge is vertically abutted against a test piece, and the measuring precision is improved;

5. through setting up a plurality of leveling pieces, adjust the base to horizontal position, reduce the base slope and to the error that the measuring result produced.

Drawings

Fig. 1 is a structural sectional view of a test piece for a concrete shrinkage test apparatus.

FIG. 2 is a schematic view of the overall structure of the concrete shrinkage test apparatus.

FIG. 3 is a schematic view of another perspective of the concrete shrinkage test apparatus.

FIG. 4 is a schematic view of a test section of the test mechanism.

Description of reference numerals: 100. a test piece; 101. mounting a rod; 110. a base; 111. a leveling member; 120. a support frame; 130. a support bar; 140. mounting a plate; 200. a tightening mechanism; 210. the rotating wheel is propped tightly; 220. tightly abutting the screw rod; 230. a resisting plate; 300. a testing mechanism; 310. a sliding part; 311. a slipping runner; 312. a sliding screw rod; 313. a sliding block; 320. a lifting part; 321. a lifting screw rod; 322. a lifting rotating wheel; 323. a lifting block; 330. a test section; 331. rotating the block; 332. rotating the fastener; 333. a protective sleeve; 334. a dial indicator; 335. and (6) installing a fastener.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings 1-4.

The embodiment of the utility model discloses concrete shrinkage test device.

Referring to fig. 1, the concrete shrinkage test device is used for testing the shrinkage of a test piece 100, mounting rods 101 are pre-embedded at two ends of the test piece 100 in the length direction, each mounting rod 101 comprises an integrally formed disc part and a rod part, each disc part and each rod part are of a cylindrical structure, and the axis of each disc part and the axis of the test piece 100 are collinear. The diameter of the disc portion is larger than the diameter of the stem portion. The disc portion is completely embedded in the test piece 100, and the end of the rod portion remote from the disc portion extends outside the test piece 100.

Referring to fig. 2, the concrete shrinkage test device includes a base 110, a plurality of leveling members 111 are connected to a lower surface of the base 110, and four leveling members 111 are provided in the embodiment. The base 110 is fixedly connected with two support frames 120, the support frames 120 in this embodiment include two vertical rods and a horizontal rod which are integrally formed, the two vertical rods are perpendicular to the base 110 and are connected with the base 110, the horizontal rod is parallel to the base 110 and is located between the two vertical rods, the two vertical rods and the horizontal rod form a door-shaped frame, and the two support frames 120 are arranged in parallel. A support rod 130 is connected between the cross rods of the two support frames 120, the support rod 130 is parallel to the base 110 and has a circular cross section. Two mounting plates 140 are movably sleeved on the support rod 130, and the mounting plates 140 can slide along the support rod 130 and also can rotate around the support rod 130. The mounting plate 140 has a through hole at an end thereof remote from the support rod 130, and the mounting rod 101 can be inserted into the through hole.

When the test piece 100 is tested, the leveling member 111 is rotated to level the base 110. The mounting plates 140 are driven to slide along the supporting rod 130, so that the distance between the two mounting plates 140 is larger than the total length of the test piece 100 and the mounting rods 101 at the two ends, the two mounting rods 101 are respectively placed corresponding to the two mounting plates 140, and the mounting plates 140 are driven to slide. So that the mounting rod 101 is inserted into the through-hole. Since the mounting plate 140 can rotate about the support rod 130, the test piece 100 can be naturally suspended. One of the mounting plates 140 may also be arranged in rotational connection with the support bar 130, and mounting of the test piece 100 may be achieved by shifting the position of the other mounting plate 140.

Referring to fig. 2, the base 110 is provided with a tightening mechanism 200 and a testing mechanism 300. The abutting mechanism 200 and the testing mechanism 300 are respectively located at two ends of the test piece 100.

Referring to fig. 2, the tightening mechanism 200 includes a tightening screw 220 rotatably connected to the base 110, the tightening screw 220 is disposed parallel to the supporting rod 130, the tightening screw 220 is disposed in the base 110, one end of the tightening screw extends out of the base 110, and one end of the tightening screw extending out of the base 110 is coaxially and fixedly connected to a tightening wheel 210. The abutting screw 220 is sleeved with an abutting plate 230. The abutting plate 230 can slide to abut against the mounting rod 101 at one end of the test piece 100.

The tightening rotating wheel 210 is driven to rotate, the tightening screw rod 220 is driven to rotate, the tightening plate 230 is driven to slide, and the mounting rod 101 at one end of the test piece 100 is tightened.

Referring to fig. 3 and 4, the test mechanism 300 includes a slide portion 310, an elevating portion 320, and a test portion 330.

Referring to fig. 3, the sliding part 310 includes a sliding screw 312 rotatably disposed in the base 110, the sliding screw 312 is disposed parallel to the supporting rod 130, and one end of the sliding screw 312 extends out of the base 110 and is coaxially and fixedly connected with a sliding wheel 311. The sliding screw 312 is threaded with a sliding block 313.

Referring to fig. 3, the lifting unit 320 includes a lifting screw 321 rotatably connected to the sliding block 313, the lifting screw 321 is disposed perpendicular to the base 110, and a lifting wheel 322 is coaxially and fixedly connected to an end of the lifting screw that is far from the sliding block 313. The lifting screw rod 321 is threaded with a lifting block 323.

Referring to fig. 3 and 4, the testing part 330 includes a rotating block 331 rotatably connected to the lifting block 323 in a plane perpendicular to the base 110, a rotating fastener 332 is connected to the lifting block 323, the rotating fastener 332 can pass through the lifting block 323 to abut against the rotating block 331, and the rotating fastener 332 is a bolt in this embodiment. Protective sleeve 333 passes through in the turning block 331, and test portion 330 still includes amesdial 334, and the measuring stick of amesdial 334 passes through to be established in protective sleeve 333, and the internal connection of turning block 331 has installation fastener 335, and installation fastener 335 can pass turning block 331 and protective sleeve 333 butt, and installation fastener 335 is the bolt in this embodiment.

The measuring rod of the dial gauge 334 is clamped in the protective sleeve 333, and the protective sleeve 333 and the dial gauge 334 are fastened and fixed by tightening the mounting fastener 335. The lifting rotating wheel 322 is driven to rotate, the height of the lifting block 323 is adjusted, the dial indicator 334 corresponds to the position of the test piece 100, the rotating block 331 is driven to rotate, the measuring head of the dial indicator 334 is perpendicular to the end face of the test piece 100, and the rotating fastener 332 is screwed to tightly abut against and fix the rotating block 331. The sliding rotating wheel 311 is driven to rotate, the sliding block 313 is driven to slide, and the angle of the dial indicator 334 is adjusted, so that the measuring head of the dial indicator 334 can abut against the mounting rod 101 at one end, far away from the abutting mechanism 200, of the test piece 100. The order of height adjustment and angle adjustment for the dial gauge 334 may be interchanged.

The embodiment of the utility model provides a concrete shrinkage test device's implementation principle does: when the test piece 100 is subjected to the shrinkage test, the test piece 100 is installed between the two mounting plates 140, and the tightening rotating wheel 210 in the tightening mechanism 200 rotates, so that the tightening plate 230 is abutted to the mounting rod 101 at one end of the test piece 100. The measuring rod of the dial gauge 334 is clamped in the protective sleeve 333, and the protective sleeve 333 and the dial gauge 334 are fastened and fixed by tightening the mounting fastener 335. The driving lifting rotating wheel 322 rotates to adjust the height of the dial indicator 334, the driving rotating block 331 rotates to adjust the angle of the dial indicator 334 and fixes the position through the rotating fastener 332, and the driving sliding rotating wheel 311 rotates, so that the measuring head of the dial indicator 334 can be vertically abutted on the end face of the test piece 100, which is far away from the mounting rod 101 at one end of the abutting mechanism 200. The shrinkage test was performed by observing the changes in the dial gauge 334 readings. For test pieces 100 with different sizes, the mounting plates 140 with different lengths can be replaced, and the height of the dial indicator 334 is adjusted through the lifting part 320, so that the test pieces 100 are tested.

Above is the preferred embodiment of the utility model, not limit according to this the utility model discloses a protection scope, the event: 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 shrinkage test device, includes base (110), the rigid coupling is connected with two support frames (120) on base (110), its characterized in that: two be connected with bracing piece (130) between support frame (120), bracing piece (130) are connected with two mounting panels (140) that are used for installing test piece (100), mounting panel (140) activity cover is established on bracing piece (130), still be provided with on base (110) and support tight mechanism (200) and accredited testing organization (300), support tight mechanism (200) including be used for with support board (230) of the one end butt of test piece (100), support board (230) and base (110) and be connected, accredited testing organization (300) includes test portion (330), test portion (330) are including being used for with amesdial (334) of the other end butt of test piece (100), amesdial (334) are connected with base (110).

2. The concrete shrinkage test apparatus of claim 1, wherein: the testing part (330) further comprises a rotating block (331) connected with the base (110), a measuring rod of the dial indicator (334) penetrates through the rotating block (331), and the dial indicator (334) is fixedly connected with the rotating block (331) through a mounting fastener (335).

3. The concrete shrinkage test apparatus of claim 2, wherein: the measuring rod of dial indicator (334) overcoat is equipped with protective sleeve (333), protective sleeve (333) wear to establish in turning block (331), installation fastener (335) are used for with protective sleeve (333) butt.

4. The concrete shrinkage test apparatus of claim 2, wherein: the testing mechanism (300) further comprises a sliding part (310), the sliding part (310) comprises a sliding block (313) connected with the base (110) in a sliding mode, and the sliding block (313) is connected with the rotating block (331).

5. The concrete shrinkage test apparatus of claim 4, wherein: the testing mechanism (300) further comprises a lifting part (320), the lifting part (320) comprises a lifting block (323) connected with the sliding block (313) in a sliding mode, and the lifting block (323) is connected with the rotating block (331).

6. The concrete shrinkage test apparatus of claim 5, wherein: the lifting block (323) is rotatably connected with the rotating block (331), and the lifting block (323) is fixedly connected with the rotating block (331) through a rotating fastener (332).

7. The concrete shrinkage test apparatus of claim 1, wherein: the abutting plate (230) is connected with the base (110) in a sliding mode.

8. The concrete shrinkage test apparatus of claim 1, wherein: the base (110) lower extreme is connected with a plurality of leveling pieces (111) that are used for carrying out the leveling to base (110), leveling piece (111) are connected with base (110).