CN211426500U

CN211426500U - High slump retaining nature recycled concrete slump test equipment

Info

Publication number: CN211426500U
Application number: CN201922305208.5U
Authority: CN
Inventors: 许广森; 俞裕星; 俞建松; 邹承忠
Original assignee: Shenzhen Hengxing Building Material Co ltd
Current assignee: Shenzhen Hengxing Building Material Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-04
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a high slump loss resistance recycled concrete slump test equipment, relate to concrete performance test field, its technical scheme main points are including supporting mechanism, a slump section of thick bamboo, and elevating system, supporting mechanism includes the bottom plate, install the backup pad group on the bottom plate, and install the roof on the backup pad group, a slump section of thick bamboo is installed on the bottom plate, elevating system is including setting up the lifter plate on the roof, a plurality of cables that pass the roof in order to connect a lifter plate and a slump section of thick bamboo, and the drive assembly who connects lifter plate and roof, the cable is cyclic annular even the arranging with the tie point at slump section of thick bamboo top, be provided with the passageway that supplies the cable to pass through on the roof, each cable is just right with the passageway respectively with the tie point at slump section of thick bamboo top, drive assembly makes progress or moves down in order to pull up or put down a slump section of thick bamboo through the drive lifter plate. The technical effect is that the risk of scraping the concrete pile when the slump cone is pulled up manually is avoided, so that the accuracy of slump data measurement is improved.

Description

High slump retaining nature recycled concrete slump test equipment

Technical Field

The utility model relates to a concrete performance test field, in particular to high slump loss nature recycled concrete slump test equipment.

Background

Slump is a method and an index for measuring concrete workability, slump tests are usually carried out in construction sites and laboratories to measure the fluidity of the mixture, and visual experience is used for evaluating the cohesiveness and the water retention. The slump is measured by a quantitative index, and is used for judging whether the construction can be normally carried out. Slump test method: pouring concrete into a horn-shaped slump cone with an upper opening of 100mm, a lower opening of 200mm and a height of 300mm for three times, uniformly impacting 25 times along the wall of the cone from outside to inside by using a tamping hammer after each filling, tamping and leveling. Then the barrel is pulled up, the concrete generates the slump phenomenon due to the dead weight, the height of the highest point of the slump concrete is subtracted from the barrel height (300mm), and the slump is called slump, and if the difference is 10mm, the slump is 10.

At present, in order to reduce the pollution of construction waste, people often smash waste concrete and recycle the waste concrete into fine aggregate for recycling. With respect to recycled concrete with high slump resistance, slump loss is small, and the slump loss refers to a phenomenon that the fluidity of fresh concrete gradually decreases with the increase of time. To the less high slump concrete of slump loss, when pulling out a slump section of thick bamboo artificially, easily because pull out the direction and take place the slope and scratch the concrete heap, and the slump of aggravation concrete heap for the slump that surveys is bigger than normal.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high slump retaining nature recycled concrete slump test equipment, it rises a slump section of thick bamboo through the cable is vertical upwards, takes place the risk of scraping to the concrete heap when avoiding the manual work to pull out a slump section of thick bamboo to improve slump data measurement's accuracy.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a high slump protection nature recycled concrete slump test equipment, includes supporting mechanism, a slump section of thick bamboo and elevating system, supporting mechanism includes the bottom plate, installs the backup pad group on the bottom plate and installs the roof on the backup pad group, a slump section of thick bamboo is installed on the bottom plate, elevating system is including setting up lifter plate, a plurality of roof of passing on the roof in order to connect the cable of lifter plate and a slump section of thick bamboo and the drive assembly who connects lifter plate and roof, the cable is cyclic annular even arrangement with the tie point at slump section of thick bamboo top, be provided with the passageway that supplies the cable to pass through on the roof, each the cable is just right with the passageway respectively with the tie point at slump section of thick bamboo top, drive assembly makes progress or removes downwards in order to pull up or put down a slump section of thick bamboo through driving the lifter plate.

Through adopting above-mentioned technical scheme, filling into a slump section of thick bamboo with the concrete and tamping and floating the back, drive assembly drive lifter plate rebound, lifter plate pulling cable, the pull up a slump section of thick bamboo upward after the tensioning of cable. The cable is provided with many and evenly is fixed in the top of a slump section of thick bamboo, and when the lifter plate pulling cable, a slump section of thick bamboo can not take place to incline because the atress is inhomogeneous. In addition, each cable is just right with the passageway respectively with the tie point at slump section of thick bamboo top, and the cable can make progress the pulling slump section of thick bamboo straightly, avoids the cable to take place to interfere with the lateral wall of passageway and leads to the uneven pulling force that slump section of thick bamboo top received, and the uneven pulling force will lead to the slump section of thick bamboo to take place to incline and cause measurement error.

Further setting: the drive assembly includes guide bar, fixed mounting on the roof that fixed mounting is in the roof and the pivot towards the rotation motor that deviates from the direction setting of roof and with the pivot coaxial coupling who rotates the motor and pass the lead screw of lifter plate, the lifter plate is offered the through-hole that supplies the guide bar to pass and is slided with the guide bar and is connected, fixed mounting has and links to each other with lead screw assorted ball lead screw bearing and with the lead screw in the lifter plate, rotate motor drive lead screw forward or reverse rotation so that the lifter plate rises or descends.

Through adopting above-mentioned technical scheme, the guide bar hinders the motion of lifter plate in the footpath of self for the lifter plate can only slide along the axial of guide bar. And the screw rod rotates, so that the ball screw rod bearing and the lifting plate move along the axial direction of the screw rod. Since the rotational speed of the motor is usually high, if a belt gear transmission is used, it will make the ascending or descending of the lifting plate difficult to control. The screw and the ball screw bearing are matched with each other, rotary motion can be converted into linear motion, and the distance of motion of the ball screw bearing is smaller when the screw rotates for multiple circles, so that high-precision control is facilitated. In addition, the screw rod and the ball screw rod bearing have proved that no creeping phenomenon is generated during movement, micro-feeding can be realized, and the control progress is high.

Further setting: the supporting plate group comprises a first supporting plate and a second supporting plate which are arranged oppositely, a sliding groove is formed in the first supporting plate along the axial direction, a sliding block is arranged in the sliding groove, the sliding block slides in the sliding groove and is in sliding connection with the sliding groove, a laser emitter with the irradiation direction parallel to the top surface of the bottom plate is arranged on the sliding block, and scales which are sequentially arranged along the axial direction are arranged on the second supporting plate.

Through adopting above-mentioned technical scheme, the slider can slide along the spout to the distance of adjustment laser emitter apart from the bottom plate, until laser emitter can just shine the peak that the concrete piled, thereby read the height that the concrete was piled, thereby when having avoided artifical use scale range eyeballing on the height of concrete pile, owing to take place to look up or overlook the error that brings.

Further setting: the laser emitter is connected with the sliding block through the horizontal swinging piece, and the swinging plane of the horizontal swinging piece is parallel to the top surface of the bottom plate.

By adopting the technical scheme, the top of the concrete pile has a certain width, and the slump is calculated by subtracting the height of the highest point of the collapsed concrete from the barrel height, wherein the highest point can be located at any position of the top of the concrete pile, and the horizontal swinging piece can change the horizontal irradiation direction of the laser emitter so as to facilitate the laser emitter to irradiate the highest point of the concrete pile.

Further setting: be provided with heat preservation mechanism on the slump section of thick bamboo, heat preservation mechanism is including setting up the electrothermal strip in the section of thick bamboo wall of slump section of thick bamboo.

By adopting the technical scheme, when the concrete slump constant measuring instrument is used for measuring in winter or in an environment with lower air temperature, the phenomena of frosting and icing can occur when water mixed in the concrete is influenced by the air temperature, so that the concrete slump is interfered, and the measured data is influenced. The electric heating strip has the advantages of high heating speed and large heating area, so that the temperature inside the barrel is more uniform, and the influence of the outside low temperature is weakened.

Further setting: the electric heating strips are arranged on the slump cone in a spiral line mode.

Through adopting above-mentioned technical scheme, the electric heat strip is the helix setting, can carry out more even heating to the concrete heap in the slump section of thick bamboo, wholly avoids the concrete heap to take place the phenomenon of frosting, freezing.

Further setting: the wall of the slump cone is internally provided with a heat preservation cavity, and the heat preservation mechanism further comprises a heat preservation material arranged in the heat preservation cavity.

Through adopting above-mentioned technical scheme, insulation material can reduce the inside and outside thermal diffusion of slump section of thick bamboo, when measuring in winter or in the environment that the temperature is lower, can reduce the external influence to the inside concrete heap of slump section of thick bamboo.

Further setting: the heat insulation material is asbestos.

Through adopting above-mentioned technical scheme, asbestos's heat conductivility is lower, is an outstanding insulation material, can hinder the inside concrete heat outward diffusion of slump cone.

To sum up, the utility model discloses following beneficial effect has:

1. the slump cone is pulled upwards vertically through the inhaul cable, so that the risk of scraping a concrete pile when the slump cone is pulled up manually is avoided, and the accuracy of slump data measurement is improved;

2. the laser emitter is matched with the scales to measure the height of the highest point of the concrete pile, so that the influence on the measurement result due to upward or downward looking during the test is avoided;

3. through the setting of heat preservation mechanism, avoided ambient temperature to cause the influence to the measurement of slump data when too cold.

Drawings

FIG. 1 is an overall schematic view of a high slump-retaining recycled concrete slump test apparatus according to the present embodiment;

FIG. 2 is a cross-sectional view of a high slump-retaining recycled concrete slump test apparatus of the present embodiment on a vertical plane perpendicular to the first support plate and passing through the axis of the screw.

In the figure, the position of the upper end of the main shaft,

1. a support mechanism; 11. a base plate; 12. a group of support plates; 121. a first support plate; 122. a second support plate; 123. a chute; 13. a top plate; 131. a channel;

2. a slump cone; 21. a heat preservation cavity;

3. a lifting mechanism; 31. a lifting plate; 311. a through hole; 32. a cable; 33. a drive assembly; 331. a guide bar; 332. rotating the motor; 333. a screw rod; 334. a ball screw bearing;

4. a measuring mechanism; 41. a slider; 42. a horizontal swinging member; 420. a swing rod; 43. a laser transmitter; 44. calibration;

5. a heat preservation mechanism; 51. an electrically heated strip; 52. and (4) a heat-insulating material.

Detailed Description

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

The utility model provides a high slump retaining nature recycled concrete slump test equipment, refers to fig. 1, including slump section of thick bamboo 2, a supporting mechanism 1 that is used for supporting slump section of thick bamboo 2, a elevating system 3 that is used for lifting or putting down slump section of thick bamboo 2, set up on supporting mechanism 1 in order to carry out measuring mechanism 4 to concrete pile peak height and install on slump section of thick bamboo 2 in order to reduce external low temperature and cause the heat preservation mechanism 5 of influence to the concrete pile.

Referring to fig. 1, the support mechanism 1 includes a bottom plate 11, a support plate group 12 mounted on the bottom plate 11, and a top plate 13 mounted on the support plate group 12, in this embodiment, the bottom plate 11 and the top plate 13 are square plates and are arranged in parallel relatively, and the slump cone 2 is mounted on the bottom plate 11. The support plate group 12 includes a first support plate 121 and a second support plate 122 disposed opposite to each other, and both the first support plate 121 and the second support plate 122 are vertically disposed on the bottom plate 11. Opposite sides of the bottom surface of the top plate 13 are fixedly connected with a first support plate 121 and a second support plate 122, respectively.

Referring to fig. 1 and 2, the lifting mechanism 3 includes a lifting plate 31 disposed on the top plate 13, a plurality of cables 32 penetrating through the top plate 13 to connect the lifting plate 31 and the slump cone 2, and a driving assembly 33 connecting the lifting plate 31 and the top plate 13, in this embodiment, the number of the cables 32 is three, and the connection points of the cables 32 and the top of the slump cone 2 are uniformly arranged in a ring shape. The top plate 13 is provided with a channel 131 for the stay cable 32 to pass through, and the connection points of each stay cable 32 and the top of the slump cone 2 are respectively opposite to the channel 131. The driving assembly 33 includes a guide rod 331 fixedly mounted on the top plate 13, a rotating motor 332 fixedly mounted on the top plate 13, and a screw rod 333 coaxially connected to a rotating shaft of the rotating motor 332 and penetrating through the lifting plate 31, the rotating shaft of the rotating motor 332 is arranged in a direction departing from the top plate 13, the guide rod 331 is arranged perpendicular to the top plate 13, the lifting plate 31 is provided with a through hole 311 for the guide rod 331 to penetrate through and is connected with the guide rod 331 in a sliding manner, a ball screw rod bearing 334 matched with the screw rod 333 is fixedly mounted in the lifting plate 31 and is connected with the screw rod 333, and the guide rod 331 radially blocks the movement of the lifting plate 31 in its own direction, so that the lifting plate 31 can only slide along the axial direction of the guide. The rotation motor 332 drives the screw 333 to rotate, so that the ball screw bearing 334 and the lifting plate 31 move in the axial direction of the screw 333, the lifting plate 31 pulls the cable 32, and the cable 32 pulls the slump cone 2 upward after being tensioned.

With continued reference to fig. 1 and 2, the first support plate 121 is axially provided with a sliding groove 123, and an opening of the sliding groove 123 faces the second support plate 122. The measuring mechanism 4 includes a slider 41 disposed in the slide groove 123, a horizontal swinging member 42 mounted on the slider 41, a laser transmitter 43 mounted on the horizontal swinging member 42, and a scale 44 disposed on the second support plate 122 and positioned opposite to the first support plate 121. In this embodiment, the horizontal swinging member 42 is a swinging rod 420 hinged to the sliding block 41, a swinging plane of the swinging rod 420 is parallel to the top surface of the bottom plate 11, and the laser emitter 43 is fixedly connected to one end of the swinging rod 420 far away from the sliding block 41 and an irradiation direction is parallel to the top surface of the bottom plate 11. The start of the scale 44 is flush with the top surface of the bottom plate 11, and the scales 44 are sequentially arranged in the axial direction of the second support plate 122 in the direction away from the bottom plate 11.

Referring to fig. 2, the heat insulating mechanism 5 includes an electric heating strip 51 provided in the wall of the slump cone 2, and a heat insulating material 52 provided in the inner wall of the slump cone 2. The electric heating strips 51 are arranged in a spiral line in the wall of the slump cone 2, the heat preservation cavity 21 is arranged in the wall of the slump cone 2, the heat preservation material 52 is arranged in the heat preservation cavity 21, and in the embodiment, the heat preservation material 52 is asbestos.

The implementation principle of the device is as follows:

when the concrete is used, the slump cone 2 is placed on the bottom plate 11, then concrete is poured into the slump cone 2 and is filled for three times, a rammer is used for ramming the concrete for 25 times from outside to inside along the cone wall after each filling, and the concrete is leveled after being tamped. Then the rotating motor 332 is started, the rotating motor 332 is rotated, the rotating motor 332 drives the screw rod 333 to rotate, the screw rod 333 drives the lifting plate 31 to move along the guide rod 331 in the direction away from the top plate 13, the lifting plate 31 pulls the pull rope 32, and the pull rope 32 pulls the slump cone 2 upwards after being tensioned, so that the slump cone 2 is separated from the concrete pile. The slider 41 is then slid upwards and the orientation of the pendulum bar 420 is adjusted so that the laser light can just hit the highest point of the concrete pile. At this point, the reading of the laser on the scale 44 is taken to calculate the slump.

The above-mentioned embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the present invention.

Claims

1. The utility model provides a high slump retaining nature recycled concrete slump test equipment, its characterized in that, includes supporting mechanism (1), a slump section of thick bamboo (2) and elevating system (3), supporting mechanism (1) includes bottom plate (11), installs supporting plate group (12) on bottom plate (11) and installs roof (13) on supporting plate group (12), a slump section of thick bamboo (2) is installed on bottom plate (11), elevating system (3) including set up lifter plate (31) on roof (13), a plurality of cable (32) of passing roof (13) in order to connect lifter plate (31) and slump section of thick bamboo (2) and drive assembly (33) of connecting lifter plate (31) and roof (13), cable (32) are cyclic annular with the tie point at slump section of thick bamboo (2) top and evenly arrange, be provided with passageway (131) that supply cable (32) to pass through on roof (13), each stay cable (32) is just right with passageway (131) respectively with the tie point at slump cone (2) top, drive assembly (33) are through drive lifter plate (31) upwards or move down in order to pull up or put down slump cone (2).

2. The high slump retaining recycled concrete slump test equipment according to claim 1, wherein the driving assembly (33) comprises a guide rod (331) fixedly mounted on the top plate (13), a rotating motor (332) fixedly mounted on the top plate (13) and provided with a rotating shaft facing away from the top plate (13), and a screw rod (333) coaxially connected with the rotating shaft of the rotating motor (332) and penetrating through the lifting plate (31), the lifting plate (31) is provided with a through hole (311) for the guide rod (331) to penetrate through and is connected with the guide rod (331) in a sliding manner, a ball screw rod bearing (334) matched with the screw rod (333) is fixedly mounted in the lifting plate (31) and is connected with the screw rod (333), and the rotating motor (332) drives the screw rod (333) to rotate forwards or reversely so as to enable the lifting plate (31) to ascend or descend.

3. The high slump retaining recycled concrete slump test equipment of claim 2, wherein the supporting plate group (12) comprises a first supporting plate (121) and a second supporting plate (122) which are arranged oppositely, a sliding groove (123) is formed in the first supporting plate (121) along the axial direction, a sliding block (41) is arranged in the sliding groove (123), the sliding block (41) slides in the sliding groove (123) and is in sliding connection with the sliding groove (123), a laser emitter (43) with an irradiation direction parallel to the top surface of the bottom plate (11) is arranged on the sliding block (41), and scales (44) which are sequentially arranged along the axial direction are arranged on the second supporting plate (122).

4. The high slump retaining recycled concrete slump test equipment according to claim 3, wherein a horizontal swinging piece (42) is installed on the sliding block (41), the laser emitter (43) is connected with the sliding block (41) through the horizontal swinging piece (42), and the swinging plane of the horizontal swinging piece (42) is parallel to the top surface of the bottom plate (11).

5. The high slump retaining recycled concrete slump test equipment according to claim 4, wherein the slump cone (2) is provided with a heat preservation mechanism (5), and the heat preservation mechanism (5) comprises an electrothermal strip (51) arranged in the cone wall of the slump cone (2).

6. The high slump retaining recycled concrete slump test device according to claim 5, wherein the electrothermal strip (51) is arranged in a spiral line on the slump cone (2).

7. The slump testing equipment for the high slump retaining recycled concrete according to claim 6, wherein a heat preservation cavity (21) is arranged in the wall of the slump cone (2), and the heat preservation mechanism (5) further comprises a heat preservation material (52) arranged in the heat preservation cavity (21).

8. The high slump retaining recycled concrete slump test apparatus according to claim 7, wherein the heat insulating material (52) is asbestos.