CN209803144U

CN209803144U - Concrete slump detection device

Info

Publication number: CN209803144U
Application number: CN201920574414.3U
Authority: CN
Inventors: 郭奇
Original assignee: Tianjin Xinxing Testing Technology Co Ltd
Current assignee: Tianjin Xinxing Testing Technology Co Ltd
Priority date: 2019-04-25
Filing date: 2019-04-25
Publication date: 2019-12-17
Anticipated expiration: 2029-04-25

Abstract

The utility model relates to a slump detection device. The device comprises a base, a workbench is fixedly connected onto the base, a support frame is fixedly connected onto the workbench, and the support frame comprises two groups of support columns and a support top plate fixedly connected to the tops of the support columns; two groups of screw rods are rotatably connected between the two groups of support columns; a slump bucket is arranged between the two groups of lead screws, and a support arm in threaded connection with the lead screws is fixedly connected to the side wall of the slump bucket; a screw rod driving component is arranged on the supporting frame; the measuring device also comprises a measuring component arranged on the supporting column; the screw rod driving assembly comprises a driving motor, and a driving belt wheel is arranged on an output shaft of the driving motor; a transmission shaft is rotatably connected to the support top plate, penetrates through the support top plate and is in key connection with a driven belt wheel and a driving gear; a belt is arranged between the driving belt wheel and the driven belt wheel; driven gears are arranged on the two groups of screw rods, and chains are connected between the driving gears and the driven gears in a transmission manner. The utility model discloses the measurement process disturbance is little, the measuring result is accurate.

Description

Concrete slump detection device

Technical Field

The utility model belongs to the technical field of the concrete detection equipment, especially, relate to a concrete slump detection device.

Background

The concrete mix must have good workability, facilitating construction, to ensure good pouring quality. Workability includes fluidity, cohesiveness, and water retention. At present, slump tests are generally carried out on 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 main process of the concrete mixture slump test is as follows: pouring concrete into a horn-shaped slump bucket with an upper opening of 100mm, a lower opening of 200mm and a height of 300mm, filling for three times, uniformly impacting 25 times along the wall of the bucket 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 collapse phenomenon due to the dead weight, and the height of the highest point of the concrete after the collapse is subtracted by the barrel height (300mm), which is called the collapse degree.

At present, the slump test of concrete is mainly carried out manually, and a slump cylinder cannot be vertical in the lifting process, so that the concrete can be disturbed, and the accuracy of the slump test of the concrete is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical problem that exists among the known art and provide a concrete slump detection device that the measurement process disturbance is little, the measuring result is accurate, the utility model discloses can guarantee that the slump bucket is extracted perpendicularly.

The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a concrete slump detection device comprises a base, wherein a transversely arranged workbench is fixedly connected to the base, a support frame is fixedly connected to the top surface of the workbench, and the support frame comprises two groups of longitudinally arranged support columns and a support top plate fixedly connected to the tops of the support columns; two groups of lead screws which are longitudinally arranged are arranged between the two groups of support columns, and the lead screws are rotationally connected with the support frame; a slump bucket is arranged between the two groups of lead screws, and a support arm in threaded connection with the lead screws is fixedly connected to the side wall of the slump bucket; a screw rod driving component for driving the screw rod to rotate is arranged on the supporting frame; the measuring device also comprises a measuring component arranged on the supporting column; the screw rod driving component comprises a driving motor fixedly connected with the top plate of the bracket, and a driving belt wheel is connected with an output shaft of the driving motor in a key manner; a transmission shaft longitudinally arranged is rotatably connected to the support top plate, penetrates through the support top plate and is in key connection with a driven belt pulley positioned above the top surface of the support top plate and a driving gear positioned below the bottom surface of the support top plate; a belt is in transmission connection between the driving belt wheel and the driven belt wheel; the two groups of lead screws are connected with driven gears in a key-on mode, the driving gears and the driven gears are located on the same horizontal plane, and chains are connected between the driving gears and the driven gears in a transmission mode.

The utility model has the advantages that: the utility model provides a concrete slump detection device, compare with prior art, the utility model discloses a set up lead screw drive assembly can drive two sets of lead screws synchronous revolution and then drive the support arm and rise to guarantee that slump bucket moves up perpendicularly, specifically drive motor rotates and can drive driving pulley and driven pulley rotation, driven pulley rotation can drive the driving gear, the rotation of driving gear can drive two sets of driven gear synchronous revolution and then drive two sets of lead screws synchronous revolution; due to the arrangement of the screw rod driving assembly, disturbance of non-vertical movement of the slump bucket on concrete when the slump bucket is manually pulled out is avoided, and the accuracy of an experimental result is improved; the arrangement of the measuring component can accurately measure the slump of the concrete.

Preferably: the lower part of the supporting column is fixedly connected with a lead screw mounting piece, and the lead screw is rotatably connected with the lead screw mounting piece and the support top plate through a rolling bearing.

Preferably: the support arms are provided with two groups and are connected with the screw rod through a nut.

Preferably: the measuring assembly comprises two groups of transversely arranged fixed rods fixedly connected with the front side surfaces of one group of supporting columns, a longitudinally arranged sliding rod is fixedly connected between the two groups of fixed rods, measuring scales are arranged on the sliding rods, and the distance between a zero scale line of the measuring scales and the workbench is the same as the height of the slump barrel; the sliding rod is sleeved with a sliding sleeve which can slide along the outer wall of the sliding sleeve, the outer wall of the sliding sleeve is fixedly connected with a transversely arranged measuring rod, and the sliding sleeve is provided with a locking piece which can fix the position of the sliding sleeve.

Preferably: the bottom surface of the top plate of the bracket is provided with a chain tension wheel which can tension the chain.

Preferably: and a transmission shaft seat is fixedly connected to the bottom surface of the top plate of the support, and the transmission shaft is rotatably connected with the transmission shaft seat through a rolling bearing.

Drawings

Fig. 1 is a schematic front view of the present invention;

Fig. 2 is a sectional view taken along line a-a of fig. 1.

in the figure: 1. a base; 2. a work table; 3. a support frame; 3-1, supporting columns; 3-2, supporting a top plate; 4. a lead screw mounting member; 5. a lead screw; 6. a measurement assembly; 6-1, measuring rod; 6-2, fixing a rod; 6-3, sliding sleeves; 6-4, a locking piece; 6-5, a slide bar; 7. a support arm; 8. a nut; 9. a slump bucket; 10. a lead screw drive assembly; 10-1, driving a motor; 10-2, a driving belt pulley; 10-3, a belt; 10-4, a transmission shaft; 10-5, a driven belt wheel; 10-6, a chain tensioning wheel; 10-7, a transmission shaft seat; 10-8, a driving gear; 10-9, a chain; 10-10 parts of driven gear.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are described in detail:

Referring to fig. 1 and 2, the concrete slump detection device of the present invention includes a base 1, a horizontally disposed work table 2 fixedly connected to the base 1, a support frame 3 fixedly connected to a top surface of the work table 2, the support frame 3 including two sets of vertically disposed support columns 3-1 and a support top plate 3-2 fixedly connected to a top of the support columns 3-1; two groups of lead screws 5 which are longitudinally arranged are arranged between the two groups of supporting columns 3-1, the lower parts of the supporting columns 3-1 are fixedly connected with lead screw mounting pieces 4, and the lead screws 5 are rotatably connected with the lead screw mounting pieces 4 and the support top plates 3-2 through rolling bearings.

A slump bucket 9 is arranged between the two groups of lead screws 5, and the height of the lead screws 5 is more than twice of the height of the slump bucket 9. Two groups of support arms 7 are fixedly connected to the side wall of the slump bucket 9; the support arms 7 are transversely and symmetrically arranged, and the central lines of the two groups of support arms 7 in the length direction are collinear; and the two groups of support arms 7 are fixedly connected with nuts 8 in threaded fit with the screw 5, and the support arms 7 are connected with the screw 5 through the nuts 8.

A screw drive assembly 10 for driving the screw 5 to rotate is provided on the support frame 3. The screw rod driving component 10 comprises a driving motor 10-1 fixedly connected with the top plate 3-2 of the bracket, and a driving belt wheel 10-2 is connected to an output shaft of the driving motor 10-1 in a key manner; the top plate 3-2 of the bracket is rotatably connected with a transmission shaft 10-4 which is longitudinally arranged, the bottom surface of the top plate 3-2 of the bracket is fixedly connected with a transmission shaft seat 10-7, and the transmission shaft 10-4 is rotatably connected with the transmission shaft seat 10-7 through a rolling bearing.

The transmission shaft 10-4 penetrates through the support top plate 3-2 and is in parallel key connection with a driven pulley 10-5 positioned above the top surface of the support top plate 3-2 and a driving gear 10-8 positioned below the bottom surface of the support top plate 3-2; a belt 10-3 is in transmission connection between the driving belt wheel 10-2 and the driven belt wheel 10-5; driven gears 10-10 are connected to the two groups of screw rods 5 in a key mode, a driving gear 10-8 and the driven gears 10-10 are located on the same horizontal plane, and chains 10-9 are connected between the driving gear 10-8 and the driven gears 10-10 in a transmission mode. The bottom surface of the bracket top plate 3-2 is provided with a chain tension pulley 10-6 which can play a tensioning role for the chain 10-9.

The working process of the screw driving assembly 10 is as follows: the driving motor 10-1 rotates to drive the driving belt wheel 10-2 to rotate, and the driving belt wheel 10-2 and the belt 10-3 act together to drive the driven belt wheel 10-5 to rotate; the driven belt wheel 10-5 rotates to drive the driving gear 10-8, and the driving gear 10-8 and the chain 10-9 cooperate to drive the two sets of driven gears 10-10 to synchronously rotate so as to drive the two sets of screw rods 5 to synchronously rotate. The transmission effect among all parts of the screw driving component 10 is stable, and the screw 5 can be driven to stably rotate synchronously.

The utility model also comprises a measuring component 6 arranged on the supporting column 3-1, the measuring component 6 comprises two groups of fixed rods 6-2 which are fixedly connected with the front side surface of a group of supporting columns 3-1 and are transversely arranged, a slide bar 6-5 which is longitudinally arranged is fixedly connected between the two groups of fixed rods 6-2, measuring scales are arranged on the slide bar 6-5, and the distance between the zero scale mark of the measuring scales and the workbench 2 is the same as the height of the slump bucket 9; a sliding sleeve 6-3 which can slide along the outer wall of the sliding sleeve 6-5 is sleeved on the sliding rod 6-5, a transversely arranged measuring rod 6-1 is fixedly connected to the outer wall of the sliding sleeve 6-3, and the lower edge of the measuring rod 6-1 is flush with the lower edge of the sliding sleeve 6-3; a locking part 6-4 capable of fixing the position of the sliding sleeve 6-3 is arranged on the sliding sleeve 6-3, the locking part 6-4 can adopt a bolt in threaded connection with the sliding sleeve 6-3, the inner end of the bolt extends to the inner cavity of the sliding sleeve 6-3, and the outer end of the bolt is provided with a knob.

When the slump of the concrete needs to be measured, the locking piece 6-4 is loosened and the sliding sleeve 6-3 is controlled to move, the measuring rod 6-1 stops when moving to be in contact with the top of the concrete, then the scale of the lower edge of the measuring rod 6-1 is read out, the slump of the concrete can be known, and after the measuring is finished, the measuring rod 6-1 is moved to other places and the locking piece 6-4 is screwed.

the working process is as follows: loosening the locking piece 6-4, rotating the sliding sleeve 6-3, and moving the measuring rod 6-1 to a position where the slump detection of the concrete is not influenced; starting a driving motor 10-1 to enable the lower port of the slump bucket 9 to be tightly buckled on the top surface of the workbench 2; . The mixed concrete is loaded into the cylinder body in three layers, each layer is one third of the height of the cylinder, each layer is spirally vibrated for 25 times, and the concrete falls on the center in the last time. And adding a mixture at any time in the last vibrating process, and finally leveling the concrete. After the collapse degree barrel 9 is completely pulled out, the driving motor 10-1 is started to enable the collapse degree barrel 9 to vertically ascend, and errors caused by the fact that the collapse degree barrel 9 cannot be pulled out vertically are avoided; and after the slump bucket 9 is pulled out, measuring the slump of the concrete by using the measuring component 6, and reading and recording.

Claims

1. The utility model provides a concrete slump detection device which characterized by: the device comprises a base (1), a workbench (2) transversely arranged is fixedly connected to the base (1), a support frame (3) is fixedly connected to the top surface of the workbench (2), and the support frame (3) comprises two groups of support columns (3-1) longitudinally arranged and a support top plate (3-2) fixedly connected to the tops of the support columns (3-1); two groups of lead screws (5) which are longitudinally arranged are arranged between the two groups of supporting columns (3-1), and the lead screws (5) are rotationally connected with the supporting frame (3); a slump barrel (9) is arranged between the two groups of lead screws (5), and a support arm (7) in threaded connection with the lead screws (5) is fixedly connected to the side wall of the slump barrel (9); a screw rod driving component (10) for driving the screw rod (5) to rotate is arranged on the support frame (3); the device also comprises a measuring component (6) arranged on the supporting column (3-1);

The screw rod driving assembly (10) comprises a driving motor (10-1) fixedly connected with a support top plate (3-2), and an output shaft of the driving motor (10-1) is in keyed connection with a driving belt pulley (10-2); a transmission shaft (10-4) which is longitudinally arranged is rotatably connected on the support top plate (3-2), the transmission shaft (10-4) penetrates through the support top plate (3-2) and is in key connection with a driven belt wheel (10-5) which is positioned above the top surface of the support top plate (3-2) and a driving gear (10-8) which is positioned below the bottom surface of the support top plate (3-2); a belt (10-3) is in transmission connection between the driving belt wheel (10-2) and the driven belt wheel (10-5); driven gears (10-10) are connected to the two groups of screw rods (5) in a key mode, the driving gears (10-8) and the driven gears (10-10) are located on the same horizontal plane, and chains (10-9) are connected between the driving gears (10-8) and the driven gears (10-10) in a transmission mode.

2. The concrete slump detecting apparatus according to claim 1, wherein: the lower part of the supporting column (3-1) is fixedly connected with a screw rod mounting piece (4), and the screw rod (5) is rotatably connected with the screw rod mounting piece (4) and the support top plate (3-2) through a rolling bearing.

3. The concrete slump detecting apparatus according to claim 1, wherein: the support arms (7) are provided with two groups, and the support arms (7) are connected with the screw rod (5) through nuts (8).

4. the concrete slump detecting apparatus according to claim 1, wherein: the measuring assembly (6) comprises two groups of fixing rods (6-2) which are transversely arranged and fixedly connected with the front side surfaces of one group of supporting columns (3-1), a sliding rod (6-5) which is longitudinally arranged is fixedly connected between the two groups of fixing rods (6-2), measuring scales are arranged on the sliding rod (6-5), and the distance between a zero scale mark of the measuring scales and the workbench (2) is the same as the height of the slump barrel (9); a sliding sleeve (6-3) which can slide along the outer wall of the sliding rod (6-5) is sleeved on the sliding rod, a measuring rod (6-1) which is transversely arranged is fixedly connected with the outer wall of the sliding sleeve (6-3), and a locking piece (6-4) which can fix the position of the sliding sleeve (6-3) is arranged on the sliding sleeve (6-3).

5. The concrete slump detecting apparatus according to claim 1, wherein: a chain tension wheel (10-6) which can tension the chain (10-9) is arranged on the bottom surface of the support top plate (3-2).

6. The concrete slump detecting apparatus according to claim 1, wherein: a transmission shaft seat (10-7) is fixedly connected to the bottom surface of the support top plate (3-2), and the transmission shaft (10-4) is rotatably connected with the transmission shaft seat (10-7) through a rolling bearing.