CN211978917U

CN211978917U - Concrete slump tester

Info

Publication number: CN211978917U
Application number: CN202020410493.7U
Authority: CN
Inventors: 谢东保; 彭小平; 李声焕; 程容
Original assignee: Jingtong Construction Group Co ltd
Current assignee: Jingtong Construction Group Co ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-11-20
Anticipated expiration: 2030-03-26

Abstract

The utility model relates to a concrete slump tester, including a slump section of thick bamboo and the bottom plate of supporting a slump section of thick bamboo, slump section of thick bamboo bilateral symmetry is provided with two hoisting devices, corresponds two hoisting devices and is provided with two coupling assembling respectively on the outer wall of a slump section of thick bamboo, is provided with the lazytongs that is used for driving two hoisting device synchronous workings in hoisting device one side on the bottom plate, and the lazytongs transmission is connected with power unit. The bottom plate is fixedly provided with two supporting tables corresponding to the two lifting devices respectively, and the lifting devices comprise lifting rods connected with the slump cone through connecting assemblies and driving mechanisms fixed on the supporting tables and used for driving the lifting rods to vertically move. The synchronous mechanism is in transmission connection with the driving mechanism, and the driving mechanism is in transmission connection with the lifting rod.

Description

Concrete slump tester

Technical Field

The utility model belongs to the technical field of engineering design technique and specifically relates to a concrete slump tester is related to.

Background

Slump is an important characteristic of concrete, and has a great influence on the working performance of the concrete, such as pumpability, plasticity, spreadability and the like. The field detection by using the slump cone is an acceptance method for the quality of the mixed concrete by a construction party.

Common methods for measuring concrete slump are: placing the slump cone on a non-water-absorbing rigid horizontal bottom plate; then pouring concrete into the slump cone and tamping; and then the slump cone is pulled up, and the concrete collapses due to self weight. At the moment, auxiliary tools such as a vertically placed ruler and a horizontally placed ruler or a horizontal stick are used for being placed at the top point of the concrete, the height of the concrete is measured, and the height of the highest point of the collapsed concrete is subtracted from the height of the slump cone to obtain the slump of the concrete.

However, the slump cone is manually lifted by an operator during the slump test, and is generally made of metal and has a heavy mass. In the manual lifting process of the slump cone, the slump cone may move on a horizontal plane to cause the cone wall to collide with a concrete sample in the cone, so that the part of the concrete collapses around the sample, and the slump measurement precision of the concrete sample on the next step is influenced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a concrete slump tester utilizes two hoisting device and guarantees through lazytongs that a slump section of thick bamboo is vertical by mentioning simultaneously, improves concrete sample slump measurement accuracy.

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

a concrete slump tester comprises a slump cone and a bottom plate supporting the slump cone, wherein two lifting devices are symmetrically arranged on two sides of the slump cone, two connecting assemblies are respectively arranged on the outer wall of the slump cone corresponding to the two lifting devices, a synchronizing mechanism for driving the two lifting devices to work synchronously is arranged on one side of the lifting device on the bottom plate, and the synchronizing mechanism is in transmission connection with a power mechanism;

two supporting tables are fixedly arranged on the bottom plate respectively corresponding to the two lifting devices, and each lifting device comprises a lifting rod connected with the slump cone through the connecting assembly and a driving mechanism which is fixed on the supporting table and used for driving the lifting rod to vertically move;

the synchronous mechanism is in transmission connection with the driving mechanism, and the driving mechanism is in transmission connection with the lifting rod.

Through adopting above-mentioned technical scheme, after filling with the concrete in the slump section of thick bamboo, utilize power unit drive lazytongs work, lazytongs passes through actuating mechanism and drives two lifter synchronous lifting. Connect the one end and the slump section of thick bamboo fixed connection of subassembly, the other end changes with the lifter and is connected for the lifter rotates and drives a slump section of thick bamboo through coupling assembling and is promoted in the vertical direction, thereby a slump section of thick bamboo mentions the in-process and keeps balance. And then will slump a section of thick bamboo and vertically mention, guarantee the measurement accuracy of concrete sample slump.

The utility model discloses further set up to: the driving mechanism comprises a driving bevel gear which is arranged on the supporting platform and is in threaded connection with the lifting rod and a transmission bevel gear which is meshed with the driving bevel gear to transmit power and is in transmission connection with the power mechanism.

By adopting the technical scheme, the transmission bevel gear transmits the power of the power mechanism to the drive bevel gear, and the rotary motion is converted into the linear motion by utilizing the threaded connection between the drive bevel gear and the lifting rod, so that the mechanism has the characteristics of high precision, reversibility and high efficiency, and is small in friction loss and high in transmission efficiency.

The utility model discloses further set up to: the synchronous mechanism comprises a driving belt wheel in transmission connection with the power mechanism, two driven belt wheels in transmission connection with the two transmission bevel gears respectively, and a synchronous belt in transmission connection with the driving belt wheel and the two driven belt wheels.

Through adopting above-mentioned technical scheme, driving pulley passes through the hold-in range with power unit's power and transmits to driven pulley, and two driven pulley synchronous rotation drive two transmission bevel gears synchronous rotation. Guaranteed that two hoisting device mention the slump section of thick bamboo in step, guaranteed that the slump section of thick bamboo is mentioned and can not appear the skew, improved the precision. The synchronous belt transmission integrates the advantages of belt transmission and gear transmission, and has accurate transmission ratio, no slip and stable transmission.

The utility model discloses further set up to: the power mechanism comprises a motor fixed on one of the support tables.

By adopting the technical scheme, one motor is adopted, so that the synchronous mechanism cannot generate motion difference due to the specification difference of the motors. And the common motor only needs one motor, so that the cost is low, and the manufacturability of the whole equipment is improved.

The utility model discloses further set up to: coupling assembling is including fixing respectively two the lifter is close to the fixed block of bottom plate one end and about slump section of thick bamboo axis symmetry is fixed two insertion block on the slump section of thick bamboo outer wall, the inserting groove has been seted up on the fixed block, the insertion block with the inserting groove cooperation of pegging graft, the fixed block pass through the bolt with the insertion block is fixed.

Through adopting above-mentioned technical scheme, rotate the slump section of thick bamboo, insert the inserting groove on the fixed block with two insertion blocks on it, the rethread bolt is fixed with insertion block and fixed block to hoisting device and slump section of thick bamboo fixed connection, when drive bevel gear drive lifter rotated, the lifter received the restriction of the slump section of thick bamboo and along its self axial displacement, drive the vertical removal of slump section of thick bamboo. Hoisting device can dismantle with a slump section of thick bamboo and be connected, and the convenience is to damaging the change of a slump section of thick bamboo and to the clearance of experiment concrete and a slump section of thick bamboo on the bottom plate.

The utility model discloses further set up to: and observation ports are formed in the outer wall of the slump cone at one third and two thirds of the height direction of the slump cone.

Through adopting above-mentioned technical scheme, because when carrying out slump test experiment, need pour the concrete toward slump section of thick bamboo in, the concrete need fill the three-layer, and the height that every layer was filled occupies the high third of a section of thick bamboo approximately. Therefore, the height of the poured concrete can be conveniently observed and determined by utilizing the two observation ports arranged on the outer surface of the slump.

The utility model discloses further set up to: the bottom plate is provided with a level gauge.

Through adopting above-mentioned technical scheme, through the position of the spirit level adjustment bottom plate on the bottom plate, guarantee that the slump cone can vertically put on the bottom plate.

The utility model discloses further set up to: the slump cone is the round platform form, just the slump cone is close to the street area of bottom plate is greater than the slump cone is kept away from the street area of bottom plate.

Through adopting above-mentioned technical scheme, be convenient for on the one hand with stable the placing on the bottom plate of a slump section of thick bamboo, on the other hand makes a slump section of thick bamboo can be lifted vertically and do not influence inside concrete sample.

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

1. the motor drives the two driving belt wheels to rotate simultaneously to drive the synchronous belts to rotate, the synchronous belts keep the two driven belt wheels to synchronously act in a transmission manner, so that the two lifting rods are driven to synchronously work, the lifting rods and the slump cone are in transmission connection through the connecting assembly, the vertical up-and-down movement of the slump cone on the lifting rods is realized, the vertical lifting of the slump cone by the lifting device is ensured, and the measurement precision is improved;

2. when the observation port of seting up on the slump section of thick bamboo outer wall was favorable to pouring the concrete, to the control of the volume of pouring of concrete, further improved the precision of experimentation.

Drawings

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

FIG. 2 is a schematic view of the local explosion of the present invention;

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

Reference numerals: 1. a slump cone; 2. a base plate; 3. a lifting device; 31. a lifting rod; 32. a drive mechanism; 321. a drive bevel gear; 322. a transmission bevel gear; 323. a drive shaft; 4. a support table; 5. a power mechanism; 51. an electric motor; 52. a drive shaft; 6. a synchronization mechanism; 61. a driving pulley; 62. a driven pulley; 63. a synchronous belt; 7. a connecting assembly; 71. a fixed block; 72. an insertion block; 73. inserting grooves; 74. a bolt; 8. a viewing port; 9. a level gauge.

Detailed Description

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

Referring to fig. 1, for the utility model discloses a concrete slump tester, including the bottom plate 2 that the level was placed and the vertical slump section of thick bamboo 1 of placing on bottom plate 2, bottom plate 2 is made for waterproof rigid material, is fixed with spirit level 9 on it, and the usable spirit level 9 of tester adjusts bottom plate 2 positions for bottom plate 2 can keep the level, thereby makes slump section of thick bamboo 1 can keep vertical on spatial position.

In order to vertically lift the slump cone 1, two lifting devices 3 fixedly connected to the slump cone 1 through connecting assemblies 7 are symmetrically arranged on the left side and the right side of the slump cone 1.

Lifting device 3 includes lifter 31, lifter 31 adopts the threaded rod, refer to fig. 2 and 3, coupling assembling 7 is including fixing respectively two lifters 31 near the fixed block 71 of bottom plate 2 one end and fixing two insertion block 72 on the outer wall of slump cone 1 about slump cone 1 axis symmetry, the inserting groove 73 has been seted up on the fixed block 71, insertion block 72 and inserting groove 73 grafting cooperation, wear to be equipped with on the fixed block 71 with insertion block 72 threaded connection's bolt 74, thereby lifter 31 and slump cone 1 fixed connection.

Referring to fig. 1, the lifting device 3 further includes a driving mechanism 32 driving the lifting rod 31 to move vertically, and the driving mechanism 32 includes a driving bevel gear 321 threadedly coupled to the lifting rod 31 and a transmission bevel gear 322 engaged with the driving bevel gear 321 to transmit the cross shaft motion. Two support platforms 4 are fixedly arranged on the base plate 2 corresponding to the two lifting devices 3, respectively, and a driving bevel gear 321 is axially vertically arranged and rotatably connected to the support platforms 4. The inner wall of the shaft hole of the driving bevel gear 321 is provided with internal threads which are in threaded connection with the lifting rod 31, the lifting rod 31 is limited by the slump cone 1 due to the fixed connection between the lifting rod 31 and the slump cone 1, and when the driving bevel gear 322 drives the driving bevel gear 321 to rotate, the lifting rod 31 is driven to vertically move.

Because two lifting rods 31 are symmetrically fixed on the slump cone 1, when the two lifting rods 31 synchronously move vertically, the slump cone 1 is driven to move vertically. Therefore, a synchronizing mechanism 6 for driving the two lift levers 31 to be vertically moved in synchronization is provided on the support table 4. The synchronous mechanism 6 includes a driving pulley 61, two driven pulleys 62, and a synchronous belt 63 for driving and connecting the driving pulley 61 and the driven pulleys 62, the driving pulley 61 is connected with the power mechanism 5, in this embodiment, the power mechanism 5 includes a motor 51 fixed on one of the support tables 4 corresponding to the driving pulley 61.

Referring to fig. 1, a driving shaft 52 is connected to a motor shaft of the motor 51 in a synchronous rotation manner, a driving pulley 61 is connected to the driving shaft 52 in a synchronous rotation manner, and two driven pulleys 62 are respectively connected to one support table 4 in a rotation manner and are respectively connected to a transmission bevel gear 322 in a coaxial rotation manner through a transmission shaft 323. The motor 51 drives the driving pulley 61 to rotate, the driving pulley 61 drives the two driven pulleys 62 to synchronously rotate through the synchronous belt 63, the two driven pulleys 62 drive the two transmission bevel gears 322 to synchronously rotate through the transmission shaft 323, so that the two driving bevel gears 321 synchronously rotate to drive the two lifting rods 31 to synchronously vertically move, and further the vertical lifting of the slump cone 1 is realized.

In the slump test, concrete needs to be poured into the slump cone 1 for three times, and the height of the concrete poured each time is one third of that of the slump cone 1. Therefore, the observation ports 8 are formed in the outer wall of the slump cone 1 at one third and two thirds of the height direction of the slump cone, and when concrete is poured into the slump cone 1, the height of the poured concrete is observed by using the observation ports 8.

The implementation principle of the embodiment is as follows:

before the slump of the concrete is measured, the bottom plate 2 is adjusted to the horizontal position by using the level gauge 9 on the bottom plate 2, and the slump cone 1 is vertically placed on the bottom plate 2. The slump cone 1 is rotated to insert the upper insertion block 72 into the insertion groove 73 of the fixed block 71 at the bottom of the lifting rod 31, and the insertion block 72 and the fixed block 71 are fixedly connected by the bolt 74. In pouring the concrete into slump section of thick bamboo 1, when pouring the concrete, need divide the three-layer to pour, the one third of each layer about slump section of thick bamboo 1 height utilizes viewing aperture 8 on the 1 outer wall of slump section of thick bamboo to observe, stops to pour after pouring the concrete height and reaching viewing aperture 8 height. After pouring a layer of concrete, need carry out the interpolation with the tamper, in-process because the fixed action of slump section of thick bamboo 1 with hoisting device 3 and brace table 4, slump section of thick bamboo 1 pastes bottom plate 2 and keeps stable.

When measuring the slump, need to lift a slump cone 1, start motor 51, motor 51 drive driving pulley 61 rotates, driving pulley 61 drives two driven pulleys 62 synchronous rotation through hold-in range 63, driven pulley 62 drives two transmission bevel gears 322 synchronous rotation through transmission shaft 323, transmission bevel gear 322 drives two drive bevel gears 321 synchronous rotation, thereby realize that the synchronous motion of two lifter 31 is with vertical slump cone 1 of mentioning, improve the measurement accuracy of concrete sample slump. The concrete collapses due to dead weight, at the moment, auxiliary tools such as a vertically placed ruler and a horizontally placed ruler or a horizontal stick are used for being put on the top point of the concrete, the height of the concrete is measured, and the height of the top point of the concrete after collapse is subtracted from the height of the slump cone 1 to obtain the slump of the concrete.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The concrete slump tester comprises a slump drum (1) and a bottom plate (2) supporting the slump drum (1), and is characterized in that the slump drum (1) is connected with two lifting devices (3) in a bilateral symmetry transmission manner, the two lifting devices (3) corresponding to two sides of the slump drum (1) are respectively detachably connected with two connecting assemblies (7), a synchronizing mechanism (6) for driving the two lifting devices (3) to synchronously work is arranged on one side of the lifting devices (3) on the bottom plate (2), and the synchronizing mechanism (6) is in transmission connection with a power mechanism (5); two supporting tables (4) are fixedly arranged on the bottom plate (2) corresponding to the two lifting devices (3) respectively, and each lifting device (3) comprises a lifting rod (31) connected with the slump cone (1) through the connecting component (7) and a driving mechanism (32) which is fixed on each supporting table (4) and used for driving the lifting rod (31) to vertically move;

the synchronous mechanism (6) is in transmission connection with the driving mechanism (32), and the driving mechanism (32) is in transmission connection with the lifting rod (31).

2. The concrete slump tester according to claim 1, wherein the driving mechanism (32) comprises a driving bevel gear (321) which is provided on the support table (4) and is in threaded connection with the lifting rod (31), and a transmission bevel gear (322) which is engaged with the driving bevel gear (321) to transmit power and is in transmission connection with the power mechanism (5).

3. The concrete slump tester as claimed in claim 2, wherein the synchronizing mechanism (6) comprises a driving pulley (61) in transmission connection with the power mechanism (5), two driven pulleys (62) in transmission connection with the two transmission bevel gears (322) respectively, and a synchronizing belt (63) in transmission connection with the driving pulley (61) and the two driven pulleys (62).

4. Concrete slump tester according to claim 1, wherein the power mechanism (5) comprises an electric motor (51) fixed to one of the support tables (4).

5. The concrete slump tester as claimed in claim 1, wherein the connecting assembly (7) comprises two fixing blocks (71) which are respectively fixed at one end of the lifting rod (31) close to the bottom plate (2) and two inserting blocks (72) which are symmetrically fixed on the outer wall of the slump cone (1) about the axis of the slump cone (1), an inserting groove (73) is formed in the fixing block (71), the inserting blocks (72) are in inserting fit with the inserting groove (73), and the fixing block (71) is fixed with the inserting blocks (72) through bolts (74).

6. The concrete slump tester according to claim 1, wherein the outer wall of the slump cone (1) is provided with observation ports (8) at one third and two thirds of the height direction.

7. The concrete slump tester according to claim 1, wherein a level (9) is provided on the base plate (2).

8. The concrete slump tester of claim 1, wherein the slump cone (1) is in a circular truncated cone shape, and the cross street area of the slump cone (1) close to the bottom plate (2) is larger than the cross street area of the slump cone (1) far away from the bottom plate (2).