CN220063686U - Cement concrete sample resistance to compression detection device that rolls over - Google Patents

Abstract

The utility model discloses a cement concrete sample compression-resistant and fracture-resistant detection device, which is arranged on a ground test platform, a support and an operation table, wherein the support and the operation table are fixed on the test platform, the support comprises a support rod fixed on the test platform and a push rod fixed on one end of the support rod far away from the test platform, a long plate and a hydraulic driving piece for driving the long plate to lift are arranged on the test platform, the long plate is arranged under the push rod, the hydraulic driving piece is fixed on the test platform, the long plate is fixed on one side of the hydraulic driving piece far away from the test platform, both ends of the long plate in the length direction are respectively fixed with a lower clamping roller, the lower clamping rollers are positioned on one side of the long plate far away from the hydraulic driving piece, an upper clamping roller is fixed on one side of the push rod close to the long plate, a compression-resistant clamp is detachably arranged on one side of the long plate far away from the hydraulic driving piece, and the compression-resistant clamp is arranged under the upper clamping roller. The utility model has the effect of simultaneously realizing the test detection of compression resistance and fracture resistance by using one bracket.

Description

Cement concrete sample resistance to compression detection device that rolls over

Technical Field

The utility model relates to the field of compression-resistant and fracture-resistant detection devices, in particular to a compression-resistant and fracture-resistant detection device for a cement concrete sample.

Background

The compression resistance detection device for the cement concrete sample is used for testing the compression resistance limit of the cement concrete, and applies pressure to the cement concrete sample by utilizing the compression resistance detection device until the cement concrete is cracked, and the pressure sensor is used for transmitting the cracked pressure of the cement concrete to the display instrument, so that the compression resistance detection result can be obtained. The device for detecting the fracture resistance of the cement concrete sample is used for testing the fracture resistance limit of the cement concrete, the fracture resistance detection device is utilized to apply pressure to the cement concrete sample until the cement concrete is broken, and the pressure sensor is used for transmitting the broken pressure of the cement concrete to the display instrument, so that the fracture resistance detection result can be obtained.

The existing cement concrete sample compression-resistant detection device and fracture-resistant detection device generally comprise a test platform arranged on the ground, an operation table and a test table, wherein the operation table and the test table are fixed on the test platform, and the test table comprises a clamp arranged on the test platform and a hydraulic driving piece for driving the clamp to extrude a sample to be tested. Since compressive strength refers to the maximum pressure that can be sustained in a side-strand-free state, the test specimen generally needs to be shaped as a cube or cylinder to detect the pressure that can be sustained when the test specimen is crushed; while flexural strength refers to the ability of a material to resist bending without breaking, it is generally evaluated using a three-point bending test or a four-point bending test, and therefore, a test specimen is usually required to be made into a long strip shape to detect the pressure that the test specimen can withstand when broken. Therefore, the existing compression-resistant clamp for detecting the compression resistance of the sample to be detected and the fracture-resistant clamp and test bed for detecting the fracture resistance of the sample to be detected are designed to be matched with the shape of the sample to be detected, the compression-resistant clamp and test bed for detecting the compression resistance are only suitable for placing and detecting small-volume samples, and the fracture-resistant clamp and test bed for detecting the fracture resistance are only suitable for placing and detecting answer-volume samples.

When the cement concrete sample is required to be subjected to compression test, the cement concrete sample is placed in a compression-resistant clamp of a bending test stand, the compression-resistant clamp is driven by a hydraulic driving piece to squeeze the cement concrete sample, after the cement concrete sample reaches a compression-resistant limit and is cracked, the hydraulic driving piece stops running, and an operation table displays the pressure change condition between the cement concrete sample and the compression-resistant clamp in the bending test process, so that the compression strength of the sample to be tested is obtained.

When the cement concrete sample is required to be subjected to the flexural test, the cement concrete sample is placed in an flexural clamp of a compression test stand, the flexural clamp is driven by a hydraulic driving piece to squeeze the cement concrete sample, after the cement concrete sample reaches a compression limit fracture, the hydraulic driving piece stops running, and an operation table displays the pressure change condition between the cement concrete sample and the flexural clamp in the flexural test process, so that the flexural strength of the sample to be tested is obtained.

With respect to the above related art, the inventor considers that the existing cement concrete sample compression-resistance and fracture-resistance detection device is limited by the design of the clamp and the test stand, and the compression-resistance performance detection and fracture-resistance performance detection of the cement concrete sample need to be performed by separating two test stands, and one test stand can only perform the compression test or the fracture test, so that the functionality is single and the occupied space is large, and therefore, there is still room for improvement.

Disclosure of Invention

In order to solve the technical problems in the prior art, the utility model provides a compression-resistant and fracture-resistant detection device for a cement concrete sample.

The utility model provides a cement concrete sample compression and fracture resistance detection device, which adopts the following technical scheme:

the utility model provides a cement concrete sample resistance to compression bending detection device, includes and arranges subaerial test platform and is fixed in support and the operation panel on the test platform, the support is including being fixed in the bracing piece of test platform and being fixed in the bracing piece and keep away from the ejector pin of one end of test platform, be equipped with longeron and the hydraulic drive spare that drives longeron and go up and down on the test platform, the longeron is arranged in under the ejector pin, hydraulic drive spare is fixed in on the test platform, the longeron is fixed in the hydraulic drive spare and keeps away from one side of test platform, the longeron all is fixed with the lower pinch roller that is used for the centre gripping to detect the test sample of resistance to bending, lower pinch roller is located one side that the longeron kept away from hydraulic drive spare, one side that the ejector pin is close to the longeron is fixed with the last pinch roller that is used for the centre gripping test sample that is awaited, one side that the longeron kept away from the hydraulic drive spare still detachably installs the compression clamp that is used for the centre gripping to detect the test sample of resistance to bending direction, the compression clamp is close to the longeron and sets up and arranges under the pinch roller along length direction's intermediate position.

Through adopting above-mentioned technical scheme, when needs carry out the bending test to the cement concrete sample, place the cement concrete sample that will test in down the pinch roller top, make the cement concrete sample be in between last pinch roller and the lower pinch roller, upwards pinch roller motion is driven to the cement concrete sample through starting hydraulic drive spare for cement concrete sample and last pinch roller conflict, hydraulic drive spare continues to drive cement concrete upwards pinch roller motion, hydraulic drive spare stops when the cement concrete sample fracture, thereby realize detection device to the bending test of cement concrete sample.

When the cement concrete sample needs to be subjected to compression test, the compression-resistant clamp is arranged on one side of the long plate, which is far away from the hydraulic driving piece, and the compression-resistant clamp is opposite to the midpoint of the length direction of the ejector rod, the cement concrete sample is arranged in the compression-resistant clamp, the hydraulic driving piece is started to rise, the compression-resistant clamp moves towards the ejector rod, when the compression-resistant clamp compresses the cement concrete sample, the hydraulic driving piece continuously drives the compression-resistant clamp to move towards the ejector rod, so that the pressure between the compression-resistant clamp and the cement concrete sample is increased, when the cement concrete sample is crushed, the hydraulic driving piece stops running, and thus the compression test of the cement concrete sample by the detection device is realized, the compression resistance and the fracture resistance of the cement concrete sample can be detected on the same test bed, the space is saved, and the manufacturing cost is reduced.

Preferably, the long plate is also fixed with fixing rods, at least two fixing rods are arranged, and at least two fixing rods are respectively abutted with two sides of the supporting rod.

Through adopting above-mentioned technical scheme, two dead levers respectively with the both sides butt of bracing piece for the hydraulic drive spare drive longboard is to the in-process of ejector pin motion, and the longboard is more easy along the direction of height motion of support column, makes the longboard shift because of the influence that receives the vibrations that hydraulic drive spare goes up and down the in-process produced more difficult to take place of long board in the lift in-process, makes the position of sample to be measured in the lift in-process shift more difficult to take place, thereby is favorable to carrying out compressive property and anti detection of rolling over performance more accurately.

Preferably, the fixing rod is perpendicular to the supporting rod, and a roller is further arranged at the position where the fixing rod is abutted to the supporting rod.

Through adopting above-mentioned technical scheme, keep away from the one end of longeron through the dead lever and set up the gyro wheel for the gyro wheel replaces dead lever and bracing piece butt, and when hydraulic drive spare drive longeron moved along the length direction of bracing piece, the gyro wheel was favorable to reducing the frictional resistance between dead lever and the bracing piece, makes in the test process be difficult to be because of the too big condition that leads to the longeron to appear being blocked easily in the lift in-process of frictional resistance between dead lever and the bracing piece.

Preferably, an indication rod is fixed on one side of the long plate along the width direction, and the side wall of the indication rod close to the long plate is flush with the side wall of the long plate closest to the indication rod.

Through adopting above-mentioned technical scheme, when placing the top of clamp roller under with the cement concrete sample, the length direction that needs to make cement concrete is unanimous with the length direction of longboard, through the setting of pilot lever, make the cement concrete sample only need directly place to the position of side with the pilot lever butt when detecting, can make the position of cement concrete sample place accurately, easy operation is convenient, and the accuracy is high, be favorable to reducing the cement concrete sample and appear positional deviation easily when placing the top of clamp roller under and lead to the condition that testing result receives the influence, be favorable to improving the precision that detects in the time of being favorable to improving work efficiency.

Preferably, one side of the long plate far away from the hydraulic driving piece is provided with a lower clamping roller, the lower clamping roller comprises a fixed clamping roller positioned at one end of the long plate along the length direction and a movable clamping roller positioned at the other end of the long plate along the length direction, the fixed clamping roller is fixed on the long plate, the movable clamping roller is movably connected onto the long plate, one side of the long plate far away from the hydraulic driving piece protrudes to form a convex strip, one side of the movable clamping roller close to the long plate is sunken to form a clamping groove abutted to the convex strip, and the movable clamping roller rotates around the convex strip.

Through adopting above-mentioned technical scheme, because the cement concrete sample can not avoid the condition that the surface inclined can appear when pouring the preparation, when the cement concrete sample was placed in the top of lower pinch roller, the cement concrete sample keeps fixed with the one end of fixed pinch roller butt, and when the activity pinch roller was in butt with the cement concrete sample, be favorable to the automatic leveling of inclined surface of cement concrete for the cement concrete sample is easier with the complete butt in top of lower pinch roller, thereby when hydraulic drive spare drive go up pinch roller and lower pinch roller to the cement concrete sample application pressure, be favorable to reducing because of the cement concrete sample has the gap with the face of lower pinch roller contact and lead to down the pinch roller to apply to the inhomogeneous condition of pressure of cement concrete sample, thereby be favorable to reducing the error that the cement concrete sample carries out the bending test, make the detection accuracy improve.

Preferably, the upper clamping roller is rotationally connected with the ejector rod.

Through adopting above-mentioned technical scheme, when utilizing last pinch roller and lower pinch roller clamp to connect cement concrete sample, rotatable through last pinch roller for when last pinch roller and cement concrete sample butt, be favorable to the automatic leveling to cement concrete's inclined surface, thereby be favorable to reducing cement concrete sample and the face of last pinch roller contact and leave the clearance and lead to last pinch roller to apply to cement concrete sample's inhomogeneous condition of pressure, be favorable to reducing the error of bending test, make detection accuracy improve.

Preferably, one side of ejector pin near the longeron is equipped with the quarter butt, the length direction of quarter butt is unanimous with the length direction of longeron, the ejector pin is connected with the quarter butt rotation, the ejector pin is equipped with the dwang with the rotation junction of quarter butt, the length direction of dwang is perpendicular with the length direction of quarter butt, go up the pinch roller and be located one side that the quarter butt is close to the longeron and leave the interval with the quarter butt, still be fixed with the elastic component on going up the pinch roller, the elastic component is established to two, two the both ends of elastic component are fixed in tip and the both sides of quarter butt along width direction of clamp roller respectively, and two the line of elastic component is parallel with the dwang.

Through adopting above-mentioned technical scheme, the elastic component has the stretching effect for go up the pinch roller both can revolute the rotation axis, also can rotate around the direction with the axis of rotation vertically, make the activity of going up the pinch roller more nimble, thereby be favorable to going up the pinch roller and make level the inclined surface of cement concrete sample more accurately, when making cement concrete sample and last pinch roller contact, both abutted parts are difficult to have the clearance more, and then make the pressure that goes up the pinch roller and apply to cement concrete sample in the testing process more even, be favorable to reducing the error of bending test better, make the measurement accuracy improve.

Preferably, one end of the long plate along the length direction is further provided with a limiting rod for limiting the position of the sample to be tested, and when the sample to be tested is placed to be abutted with the limiting rod, the upper surface of the lower clamping roller is completely abutted with the sample to be tested.

Through adopting above-mentioned technical scheme for cement concrete sample is placing on the longeron and is examined the time measuring, only needs earlier with cement concrete sample promote to the position with the gag lever post butt, the position of the other end is adjusted again can, be favorable to restricting cement concrete sample's position control range better, make cement concrete sample in the in-process of position control be difficult to appear surpassing the scope of detection position and lead to cement concrete sample's position to need readjust the condition, still be favorable to reducing cement concrete sample's placement position inaccuracy and lead to the condition that the bending test effect received the influence, still be favorable to improving the accuracy that the bending was examined in the time of being favorable to improving detection efficiency better.

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

1. through keeping away from the fixed long board in one side of test platform at hydraulic drive spare, long board length direction's both ends set up down the pinch roller, lower pinch roller is located long board one side of keeping away from hydraulic drive spare, the ejector pin is close to one side of long board and sets up the pinch roller, one side of hydraulic drive spare is kept away from to the long board is dismantled and is installed compression resistance anchor clamps, when needs carry out the bending test to the cement concrete sample, place the cement concrete sample that waits to test down at the pinch roller top, make the cement concrete sample be in between upper pinch roller and the lower pinch roller, rise through the start-up hydraulic drive spare and drive cement concrete sample upward pinch roller motion, make cement concrete sample and last pinch roller conflict, hydraulic drive spare continues to drive cement concrete upward pinch roller motion, hydraulic drive spare stops when the cement concrete sample fracture, thereby realize detection device to the bending test of cement concrete sample. When the cement concrete sample needs to be subjected to compression test, the compression-resistant clamp is arranged on one side of the long plate, which is far away from the hydraulic driving piece, the compression-resistant clamp is opposite to the midpoint of the length direction of the ejector rod, the cement concrete sample is arranged in the compression-resistant clamp, the hydraulic driving piece is started to rise, the compression-resistant clamp moves towards the ejector rod, when the compression-resistant clamp compresses the cement concrete sample, the hydraulic driving piece continuously drives the compression-resistant clamp to move towards the ejector rod, the pressure between the compression-resistant clamp and the cement concrete sample is increased, and when the cement concrete sample is cracked, the hydraulic driving piece stops running, so that the cement concrete sample fracture-resistant detection test bed can be subjected to compression test.

2. Through setting up pinch roller and ejector pin and rotating to be connected, movable pinch roller and longboard rotate to be connected for when cement concrete sample contacted with last pinch roller, the part of both butt was difficult to more to have the clearance, and when cement concrete sample was placed at the pinch roller top down, the slope that is favorable to cement concrete sample was easier automatic to be leveled, and then makes last pinch roller exert on cement concrete sample's pressure more even in the testing process, is favorable to reducing the error of bending test better, makes the measurement accuracy improve.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a compression-resistant and fracture-resistant detection device for a cement concrete sample.

Fig. 2 is a schematic diagram of the internal structure of a device for detecting compression and fracture resistance of a cement concrete sample.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Reference numerals illustrate:

1. a test platform; 11. a bracket; 111. a support rod; 112. a push rod; 12. an operation table; 2. a hydraulic drive; 3. a long plate; 31. a lower nip roller; 32. an indication rod; 33. a limit rod; 34. a convex strip; 35. a fixed rod; 351. a roller; 36. a bump; 37. a fixing seat; 41. an upper nip roller; 411. a first clamping column; 42. a short bar; 421. a second clamping column; 43. a rotating lever; 44. a side plate; 45. an elastic member; 5. a compression-resistant clamp; 51. a bottom support; 511. a restraining post; 512. a square plate; 513. a circular plate; 52. a column; 53. a top plate; 54. a limiting plate; 55. a push rod; 56. a backing ring; 57. a pressing plate; 58. and a rubber pad.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

The embodiment of the utility model discloses a compression and fracture resistance detection device for a cement concrete sample. Referring to fig. 1, the test bench comprises a test platform 1 placed on the ground, a support 11 and an operation table 12, wherein the support 11 is fixed on the test platform 1, the support 11 comprises support rods 111 fixed on the test platform 1 and a push rod 112 fixed with one end, far away from the test platform 1, of the support rods 111, in the embodiment, the two support rods 111 are perpendicular to the test platform 1, the support rods 111 are cylindrical, and two ends of the push rod 112 along the length direction are respectively fixed with one end, far away from the test platform 1, of the support rods 111. The test platform 1 is also provided with a long plate 3 for placing a test sample for detecting the bending resistance and a hydraulic driving piece 2 for driving the long plate 3 to lift, and the hydraulic driving piece 2 is positioned between the two support rods 111. The long plate 3 is fixed in the one side that the test platform 1 was kept away from to the hydraulic drive spare 2, and the width direction of long plate 3 is unanimous with the length direction of ejector pin 112, and the one side that the hydraulic drive spare 2 was kept away from to long plate 3 still can dismantle and be connected with the installation compressive clamp 5 that is used for placing the detection compressive property sample. The console 12 is located on one side in the width direction of the long plate 3, and a space is left between the console 12 and the bracket 11.

Referring to fig. 1, in this embodiment, the hydraulic driving member 2 is a hydraulic cylinder, the hydraulic cylinder is composed of a cylinder fixed on the test platform 1 and a piston rod moving in the cylinder, the cylinder is cylindrical, the diameter of the cylinder is smaller than the distance between two support rods 111, the cylinder is perpendicular to the test platform 1, the center of the cylinder is in the middle of the two support rods 111, one end of the piston rod, which is far away from the cylinder, is fixedly connected with one side of the long plate 3 along the thickness direction, and the piston rod is driven to move by the hydraulic cylinder, so that the long plate 3 is driven to move up and down.

Referring to fig. 1, the width of the long plate 3 is smaller than the diameter of the cylinder, the long plate 3 is located at the middle position of the two support rods 111, and in this embodiment, the length of the long plate 3 is four times the width of the long plate 3.

Referring to fig. 1, the long plate 3 is fixed with two fixing rods 35 on one side in the width direction, and in this embodiment, two fixing rods 35 are provided. The fixed rod 35 is perpendicular to the support rod 111, in this embodiment, the fixed rod 35 is located on one side of the long plate 3 close to the operation table 12, the fixed rod 35 is cylindrical, the diameter of the fixed rod 35 is smaller than the thickness of the long plate 3, one end of the fixed rod 35 is fixed on one side of the long plate 3 close to the operation table 12 along the width direction, one end of the fixed rod 35 away from the long plate 3 is rotationally connected with the roller 351, and the two rollers 351 are respectively abutted to the side walls of the support rod 111 along the two sides of the length direction of the long plate 3. When the hydraulic driving member 2 drives the long plate 3 to rise and fall, the roller 351 rolls in the height direction of the support rod 111.

Referring to fig. 1, an indication rod 32 is fixed to one side of the long plate 3 in the width direction, in this embodiment, the indication rod 32 is two rectangular rods, the indication rod 32 is parallel to the support rod 111, the indication rod 32 is located on one side of the long plate 3 away from the console 12 in the width direction, and one side of the indication rod 32 closest to the long plate 3 is fixedly connected with one side of the long plate 3 away from the console 12 in the width direction, i.e. one side of the indication rod 32 closest to the long plate 3 is flush with one side of the long plate 3 away from the operation.

Referring to fig. 1, two ends of a long plate 3 along a length direction are provided with lower clamping rollers 31, the lower clamping rollers 31 are located on one side of the long plate 3 far away from the hydraulic driving part 2, the lower clamping rollers 31 are cylindrical, the length of the lower clamping rollers 31 is consistent with the width of the long plate 3, the length direction of the lower clamping rollers 31 is consistent with the width direction of the long plate 3, and the lower clamping rollers 31 consist of fixed clamping rollers fixed on one end of the long plate 3 along the length direction and movable clamping rollers movably connected on one end of the long plate 3 far away from the fixed clamping rollers along the length direction.

Referring to fig. 2, the long plate 3 has a protrusion 36 protruding from one end thereof to which the fixing nip roller is fixed, and a fixing seat 37 fixedly connected thereto, and the fixing seat 37 is located at a side of the long plate 3 remote from the hydraulic driving member 2. The lug 36 is rectangular plate 512, the length of lug 36 is the same with the width of long board 3, one side of lug 36 along the thickness direction is connected with one side of long board 3 far away from hydraulic drive piece 2 an organic whole, one side of lug 36 along the width direction far away from movable pinch roller flushes with the terminal surface that long board 3 is close to fixed pinch roller one end along the length direction, and the thickness of lug 36 is the third of long board 3 thickness. The fixing seat 37 is in an isosceles right triangular prism shape, one right-angle surface of the fixing seat 37 is fixedly connected with one side, far away from the hydraulic driving part 2, of the long plate 3, the other right-angle surface of the fixing seat 37 is fixedly connected with one side, close to the movable clamping roller, of the bump 36 along the width direction, the length of the fixing seat 37 is one third of the width of the long plate 3, and the triangular block is located in the middle position of the long plate 3 along the width direction. The inclined plane of triangular block still is sunken to have the recess that supplies the fixed roller of fixation clamp, and the recess is circular-arc, and the lateral wall of recess all is connected with the lateral wall fixed of the part of fixation clamp and recess contact, and the fixed roller of fixation clamp leaves the interval with the one side that long board 3 kept away from hydraulic drive 2.

Referring to fig. 1, one end of the long plate 3 provided with the movable clamping roller is recessed with a notch, the notch is arc-shaped, the notch is located on one side of the long plate 3 away from the hydraulic driving piece 2, the length direction of the notch is consistent with the length direction of the long plate 3, the depth of the notch is smaller than the radius of the lower clamping roller 31, and the notch is located at the middle position of the long plate 3 along the width direction. The inner side wall of the notch is also fixed with a convex strip 34, the convex strip 34 is cylindrical, the end face of one end of the convex strip 34 along the axial direction is flush with the end face of one end of the long plate 3, which is close to the movable clamping roller along the length direction, the radius of the convex strip 34 is larger than the depth of the notch, and the convex strip 34 protrudes from the upper surface of one side of the long plate 3, which is far away from the hydraulic driving part 2.

Referring to fig. 1, the middle position of the movable clamping roller along the length direction is also recessed with a clamping groove for clamping the convex strip 34, the clamping groove is arc-shaped, the depth of the clamping groove is consistent with the radius of the convex strip 34, when the movable clamping roller is placed on one side of the long plate 3 far away from the hydraulic driving piece 2 and the clamping groove is opposite to the convex strip 34, the abutting part of the convex strip 34 and the clamping groove is completely attached to the clamping groove, and the movable clamping roller and one side of the long plate 3 far away from the hydraulic driving piece 2 leave a space, and the space between the movable clamping roller and the long plate 3 is consistent with the space between the fixed clamping roller and the long plate 3.

Referring to fig. 1, a stop lever 33 for limiting the position of the sample to be measured is further fixed at one end of the long plate 3 along the length direction, the stop lever 33 is in a rectangular rod shape, the stop lever 33 is parallel to the support rod 111, the outer side wall of one end of the stop lever 33 is fixedly connected with the end surface of the long plate 3, which is close to one end of the fixed clamping roller, and the length direction of the stop lever 33 extends towards one side of the long plate 3, which is far away from the hydraulic driving part 2.

Referring to fig. 1, the ejector rod 112 has a rectangular rod shape, a short rod 42 is rotatably connected to one side of the ejector rod 112 adjacent to the long plate 3, the length direction of the short rod 42 is identical to the length direction of the long plate 3, and the short rod 42 is located at a middle position in the length direction of the ejector rod 112. In this embodiment, two side plates 44 are respectively located at two sides of the short rod 42 near the support rod 111, the side plates 44 are in a shape of rectangular plate 512, the two side plates 44 are parallel to each other, the length direction of the two side plates 44 is consistent with that of the short rod 42, the two side plates 44 are perpendicular to the top rod 112, the length of the two side plates 44 is smaller than the width of the top rod 112, through holes are formed in the center positions of the two side plates 44 and the short rod 42 along the length direction, the through holes of the two side plates 44 and the short rod 42 are opposite, the through holes are circular, a rotating rod 43 is fixed on the short rod 42, the rotating rod 43 simultaneously penetrates through the through holes of the two side plates 44 and the short rod 42, and two ends of the rotating rod 43 are respectively connected with the two side plates 44 in a rotating mode. A space is left between the short rod 42 and the ejector rod 112, and the short rod 42 rotates around the rotating rod 43.

Referring to fig. 3, the upper nip roller 41 has a cylindrical shape, the upper nip roller 41 and the lower nip roller 31 have the same length, and the upper nip roller 41 and the lower nip roller 31 have the same diameter. The short rod 42 is sunken to have the square groove along length direction's both ends, and the square groove is rectangular groove form, and the square groove is located the short rod 42 and is close to one side of long board 3, and the width of square groove is unanimous with the diameter of last pinch roller 41, and the length of square groove is unanimous with the width of short rod 42, and the degree of depth of square groove is greater than the radius of last pinch roller 41, goes up pinch roller 41 and arranges in the square groove and leave the interval with the lateral wall of square groove.

Referring to fig. 3, the two ends of the upper clamping roller 41 are respectively fixed with a first clamping column 411, the two first clamping columns 411 are parallel to each other, the first clamping column 411 is located on the side wall of the upper clamping roller 41, which is close to the ejector rod 112, and a first clamping hole penetrates through one end of the first clamping column 411, which is far away from the upper clamping roller 41. The two sides of the short rod 42, which are close to the support rod 111, are respectively fixed with a second clamping column 421, the second clamping column 421 is perpendicular to one side of the short rod 42, which is close to the support rod 111, and one end of the second clamping column 421, which is far away from the short rod 42, is penetrated with a second clamping hole. The second clamping columns 421 are provided with four, two sides of the short rod 42, which are close to the supporting rod 111, are respectively provided with two short rods, the four second clamping columns 421 are respectively located right above the square grooves, and the four first clamping columns 411 are in one-to-one correspondence with the four second clamping columns 421. The first clamping column 411 is further fixedly connected with an elastic member 45, in this embodiment, the elastic member 45 is a spring, one end of the elastic member 45 away from the first clamping column 411 is fixedly connected with one end of the second clamping column 421, and two ends of the elastic member 45 respectively penetrate into the corresponding first clamping hole and second clamping hole, and the upper clamping roller 41 rotates around the short rod 42.

Referring to fig. 2 and 3, a rubber pad 58 is disposed on a side of the long plate 3 away from the hydraulic driving element 2, the rubber pad 58 abuts against a side of the long plate 3 away from the hydraulic driving element 2, in this embodiment, two rubber pads 58 are provided, and the thickness of the two rubber pads 58 is uniform. The compression-resistant clamp 5 is placed on the side of the rubber pad 58 remote from the long plate 3. The compression-resistant clamp 5 comprises a bottom support 51, a stand column 52, a top plate 53 and a push rod 55, wherein the bottom support 51 is in butt joint with one side, away from the long plate 3, of the rubber pad 58, the stand column 52 is perpendicular to the bottom support 51, the top plate 53 is fixed with one end, away from the bottom support 51, of the stand column 52, the push rod 55 penetrates through the top plate 53, the push rod 55 is cylindrical, and a movable hole for the push rod 55 to penetrate through is formed in the top plate 53.

Referring to fig. 3, the shoe 51 includes a circular plate 513 abutting against the rubber pad 58 and a square plate 512 fixed to a side of the circular plate 513 away from the rubber pad 58, the square plate 512 having a length smaller than a diameter of the circular plate 513, a longitudinal direction of the square plate 512 being identical to a width direction of the long plate 3, and a restricting column 511 fixed to a side of the circular plate 513 away from the rubber pad 58, in this embodiment, the restricting column 511 is cylindrical, the two restricting columns 511 are perpendicular to the circular plate 513, the two restricting columns 511 are located on both sides of the square plate 512 in the width direction, and the restricting column 511 abuts against both sides of the square plate 512 in the width direction, and a height Yu Fangban of the restricting column 511 is a thickness of the restricting column 511.

Referring to fig. 3, the upright posts 52 are fixed to the side of the square plate 512 away from the circular plate 513, and four upright posts 52 are disposed at four vertex angles of the square plate 512.

Referring to fig. 3, the top plate 53 is in an oval cake shape, the length direction of the top plate 53 is consistent with the length direction of the upper nip rollers 41, two sides of the top plate 53 in the width direction are plane, the distance between the two planes is smaller than the distance between the two upper nip rollers 41, the movable hole is positioned at the center of the top plate 53, the movable hole is circular, the diameter of the movable hole is consistent with the diameter of the push rod 55, and the push rod 55 penetrates the movable hole and moves in the vertical direction.

Referring to fig. 3, a limiting plate 54 is fixed to one end of the push rod 55 near the short rod 42, the limiting plate 54 is in a shape of a circular cake, the diameter of the limiting plate 54 is larger than that of the push rod 55, and the diameter of the limiting plate 54 is smaller than the interval between the planes on both sides of the top plate 53 in the width direction. The push rod 55 is fixed with the clamp plate 57 away from the one end of quarter butt 42, and clamp plate 57 is square board 512 form, and the side length of clamp plate 57 is unanimous with square board 512's width, and the side length of clamp plate 57 is greater than the diameter of push rod 55. A backing ring 56 is arranged on one side of the top plate 53, which is close to the short rod 42, the diameter of the inner circle of the backing ring 56 is consistent with that of the push rod 55, the diameter of the outer circle of the backing ring 56 is smaller than that of the limiting plate 54, and the push rod 55 penetrates through the inner circle of the backing ring 56. When the push rod 55 moves toward the short rod 42 to the limit position, the pressing plate 57 abuts against the side of the top plate 53 away from the short rod 42; when the push rod 55 moves toward the shoe 51 to the limit position, the pressing plate 57 is spaced from the shoe 51, the limiting plate 54 abuts against the side of the grommet 56 near the short rod 42, and the limiting plate 54 limits the push rod 55 to continue moving toward the shoe 51.

The implementation principle of the compression-resistant and fracture-resistant detection device for the cement concrete sample provided by the embodiment of the utility model is as follows:

when a bending test is required to be carried out on the cement concrete sample, the rubber pad 58 and the compression-resistant clamp 5 which are arranged on one side of the long plate 3 far away from the hydraulic driving piece 2 are taken down, the cement concrete sample is arranged at the top of the lower clamping roller 31, one end of the cement concrete sample in the length direction is firstly arranged at the top of the fixed clamping roller, one end of the cement concrete sample, which is close to the limiting rod 33, is abutted against the limiting rod 33, and the other end of the cement concrete sample is arranged at the top of the movable clamping roller.

Then, the hydraulic driving member 2 is started to enable the piston rod to rise, the hydraulic driving member 2 drives the cement concrete sample to move towards the upper clamping roller 41, after the cement concrete sample contacts with the upper clamping roller 41, the upper clamping roller 41 abuts against the surface, close to the upper clamping roller 41, of the cement concrete sample, the upper clamping roller 41 is rotationally connected with the short rod 42, the short rod 42 rotates around the rotating rod 43, the upper clamping roller 41 rotates around the direction perpendicular to the rotating rod 43 under the action of the elastic member 45, the upper clamping roller 41 automatically grabs the inclined surface, in contact with the upper clamping roller 41, of the cement concrete sample, the hydraulic driving member 2 continues to drive the cement concrete sample to move towards the upper clamping roller 41, and accordingly the pressure between the upper clamping roller 41 and the cement concrete sample and the pressure between the lower clamping roller 31 and the cement concrete sample continuously increase. When the cement concrete sample breaks, the hydraulic drive 2 stops running, and the operation table 12 displays the pressure to which the cement concrete sample is subjected during the flexural test.

When the compression test is required to be performed on the cement concrete sample, the rubber pad 58 is firstly placed on one side, far away from the hydraulic driving piece 2, of the long plate 3, then the compression-resistant clamp 5 is placed on one side, far away from the long plate 3, of the rubber pad 58, then the cement concrete sample is placed on one side, far away from the long plate 3, of the square plate 512, one side, along the width direction, of the cement concrete sample is abutted with the limiting column 511, the hydraulic driving piece 2 is started again, the piston rod is enabled to ascend, the hydraulic driving piece 2 drives the compression-resistant clamp 5 to move towards the short rod 42, and when the limiting plate 54 is abutted with the short rod 42, the hydraulic driving piece 2 continuously drives the compression-resistant clamp 5 to move towards the short rod 42, so that the push rod 55 drives the pressing plate 57 to move towards the cement concrete sample. When the cement concrete sample is abutted against the pressing plate 57, the hydraulic driving piece 2 continuously increases the pressure of the square plate 512 and the cement concrete sample, and the pressing plate 57 and the cement concrete sample, when the cement concrete sample is broken, the hydraulic driving piece 2 stops running, and the operation table 12 displays the pressure applied to the cement concrete sample in the flexural test process, so that the compressive test can be performed on the cement concrete sample flexural operation table 12.

Through setting up hydraulic drive spare 2 liftable, hydraulic drive spare 2 is kept away from one side of test platform 1 and is set up longboard 3, and compression resistance fixture 5 demountable installation is kept away from one side of hydraulic drive spare 2 in longboard 3 to and be provided with pinch roller 41 and lower pinch roller 31 for cement concrete sample compression resistance and fracture resistance detection device uses a test platform 1 can accomplish compression resistance test and fracture resistance test of cement concrete sample, thereby has increased cement concrete sample compression resistance and fracture resistance detection device's application scope.

Through setting up instruction pole 32 and gag lever post 33, with the in-process that cement concrete sample placed down the pinch roller 31 top, make cement concrete sample width direction's one side and instruction pole 32 butt, can instruct that cement concrete sample's width direction has been placed in place, reduced cement concrete sample in-process and be difficult to the comparison of locating position because of longeron 3 and make width azimuth deviation big, need the condition of repeated adjustment cement concrete sample position, be favorable to improving detection efficiency. In the process of placing the cement concrete sample down to the top of the clamping roller 31, one end of the cement concrete sample in the length direction is firstly abutted against the limiting rod 33, so that the cement concrete sample can be limited to exceed the placing range, and meanwhile, the limiting rod 33 can prevent the cement concrete sample from sliding down to the ground, so that the situation that the cement concrete sample easily slides down to the ground due to the fact that the long plate 3 does not have a protection structure in the length direction in the placing process of the cement concrete sample is reduced, and the safety of the test process is improved. The position restriction of the indication rod 32 and the limit rod 33 to the cement concrete sample makes the position of the cement concrete sample placed at the top of the lower clamping roller 31 more accurate, so that the measurement accuracy of the bending test is higher.

Through setting up fixed clamp roller and the movable clamp roller of activity on the one side that long board 3 is close to upper clamp roller 41 to set up quarter butt 42 and go up clamp roller 41 movable, install cement concrete sample in lower clamp roller 31 top, when carrying out the bending test, upper clamp roller 41 and lower clamp roller 31 can grab the cement concrete sample automatically, when having reduced cement concrete sample and having had inclination, upper clamp roller 41 and lower clamp roller 31 are difficult to contradict completely with cement concrete sample, lead to upper clamp roller 41 and lower clamp roller 31 to apply to the inhomogeneous condition of pressure of cement concrete sample, make compression test's error further reduce.

By setting the spacing of the upper pinch rollers 41 to be larger than the spacing of the two side planes of the top plate 53, when the compression-resistant jig 5 is required to be mounted for compression test, the restriction plate 54 and the top plate 53 can move toward the short bar 42 between the upper pinch rollers 41, so that the upper pinch rollers 41 are not easy to cause obstruction to the test requiring the compression-resistant jig 5.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. The utility model provides a cement concrete sample resistance to compression bending detection device, includes and arranges subaerial test platform (1) and is fixed in support (11) and operation panel (12) on test platform (1), a serial communication port, support (11) are including being fixed in bracing piece (111) of test platform (1) and being fixed in bracing piece (111) and keep away from ejector pin (112) of one end of test platform (1), be equipped with longeron (3) and drive longeron (3) hydraulic drive spare (2) that go up and down on test platform (1), longeron (3) are arranged in under ejector pin (112), hydraulic drive spare (2) are fixed in on test platform (1), longeron (3) are fixed in hydraulic drive spare (2) and keep away from one side of test platform (1), longeron (3) all are fixed with the lower pinch rolls (31) that are used for the centre gripping to detect the test sample of anti-bending performance along length direction's both ends, lower pinch rolls (31) are located one side that longeron (3) keep away from hydraulic drive spare (2), be used for the compression performance of the test sample (2) is kept away from to be fixed in on one side (2) of longeron (3) that is close to the clamp test platform (2), the compression-resistant clamp (5) is arranged close to the middle position of the long plate (3) along the length direction and is arranged right below the upper clamping roller (41).

2. The compression-resistant and fracture-resistant detection device for the cement concrete sample according to claim 1, wherein fixing rods (35) are further fixed on the long plate (3), at least two fixing rods (35) are arranged, and at least two fixing rods (35) are respectively abutted to two sides of the supporting rod (111).

3. The device for detecting the compression resistance and fracture resistance of the cement concrete sample according to claim 2, wherein the fixing rod (35) is perpendicular to the supporting rod (111), and a roller (351) is further arranged at the abutting position of the fixing rod (35) and the supporting rod (111).

4. A cement concrete sample compression and fracture resistance detection device according to any one of claims 1-3, wherein an indication rod (32) is fixed on one side of the long plate (3) along the width direction, and the side wall of the indication rod (32) close to the long plate (3) is flush with the side wall of the long plate (3) closest to the indication rod (32).

5. A cement concrete sample compression-resistant and fracture-resistant detection device according to any one of claims 1-3, characterized in that a lower clamping roller (31) is arranged on one side, far away from a hydraulic driving piece (2), of the long plate (3), the lower clamping roller (31) comprises a fixed clamping roller positioned at one end of the long plate (3) along the length direction and a movable clamping roller positioned at the other end of the long plate (3) along the length direction, the fixed clamping roller is fixed on the long plate (3), the movable clamping roller is movably connected onto the long plate (3), a raised line (34) protrudes from one side, far away from the hydraulic driving piece (2), of the long plate (3), a clamping groove which is abutted against the raised line (34) is recessed on one side, close to the long plate (3), of the movable clamping roller, and the movable clamping roller rotates around (34).

6. A device for detecting the compression and fracture resistance of a cement concrete sample according to any one of claims 1 to 3, wherein the upper clamping roller (41) is rotatably connected with the ejector rod (112).

7. The cement concrete sample compression-resistant and fracture-resistant detection device according to claim 6, wherein a short rod (42) is arranged on one side, close to the long plate (3), of the ejector rod (112), the length direction of the short rod (42) is consistent with the length direction of the long plate (3), the ejector rod (112) is rotationally connected with the short rod (42), a rotating rod (43) is arranged at the rotationally connected position of the ejector rod (112) and the short rod (42), the length direction of the rotating rod (43) is perpendicular to the length direction of the short rod (42), the upper clamping roller (41) is located on one side, close to the long plate (3), of the short rod (42) and is spaced from the short rod (42), an elastic piece (45) is further fixed on the upper clamping roller (41), two elastic pieces (45) are respectively fixed on two ends of the upper clamping roller (41) and two sides of the short rod (42) along the width direction, and the connecting lines of the two elastic pieces (45) are parallel to the rotating rod (43).

8. A cement concrete sample compression and fracture resistance detection device according to any one of claims 1-3, wherein one end of the long plate (3) along the length direction is further provided with a limiting rod (33) for limiting the position of a sample to be detected, and when the sample to be detected is placed to be abutted against the limiting rod (33), the upper surface of the lower clamping roller (31) is completely abutted against the sample to be detected.