CN203688396U

CN203688396U - Detection device for fluidity of cement mortar

Info

Publication number: CN203688396U
Application number: CN201320728971.9U
Authority: CN
Inventors: 王枝枝; 周建娇; 付建峰
Original assignee: Changan University
Current assignee: Changan University
Priority date: 2013-11-15
Filing date: 2013-11-15
Publication date: 2014-07-02
Anticipated expiration: 2023-11-15

Abstract

The utility model discloses a detection device for fluidity of cement mortar. The detection device for fluidity of cement mortar comprises a disc desktop, a rack and a base, wherein the rack is vertically connected onto the base; three stiffening ribs are distributed round the rack at an angle of 120 degrees and are consolidated onto the rack and the base; an electromotor is also consolidated onto the rack, and a cam is installed on the output shaft of the electromotor; the rack is a hollow cylindrical rack, and the inner part of the rack is axially provided with a push rod along the rack; the lower end of the push rod makes contact with the cam, so that the push rod does a reciprocating motion along with the rotation of the electromotor; the upper end of the push rod is consolidated with a cylindrical bottom shell, and the axis of the inner part of the bottom shell is provided with an iron core; a coil is wound on the iron core, and a coil outlet is formed in the side wall of the bottom shell; the disc desktop is arranged at the top of the bottom shell, a plurality of concentric circular grooves are formed in the upper surface of the disc desktop, and magnetic isolation layers are cast into the circular grooves; the disc desktop, the bottom shell, the push rod and the rack are coaxially arranged. The device has the advantages of simple structure and good application effect and provides good technical equipment for detection for the fluidity of cement mortar.

Description

A kind of sand-cement slurry fluidity pick-up unit

Technical field

The utility model belongs to cement concrete test apparatus, is specifically related to a kind of sand-cement slurry flow detector.

Background technology

Carry out cement concrete experiment and need to measure sand-cement slurry fluidity.Existing sand-cement slurry fluidity pick-up unit is mainly made up of beat part and rack section, wherein disk desktop is made up of cast steel, smooth surface is smooth, and Zhi center is carved circle and determined die trial position, at analyzer at sand loading slurry with smash while pressure, die trial is directly positioned on disk desktop, laboratory technician need, with hand steered steady die trial, increase like this operation easier, and die trial easily be moved, be difficult to ensure to smash press evenly, affect test figure accuracy.

Summary of the invention

For the deficiency in above-mentioned existing equipment, the purpose of this utility model is, a kind of sand-cement slurry fluidity pick-up unit with calutron is provided, and solves sand loading slurry and smashes die trial while pressure and move problem.

The technical scheme that the utility model adopts is:

A kind of sand-cement slurry fluidity pick-up unit, comprises disk desktop, frame and base, and frame is vertical to be connected on base, is 120 ° of three enhancing ribs that distribute around frame, strengthens rib and is cemented on frame and base; In frame, be also consolidated with motor, on the output shaft of motor, cam be installed; Frame is hollow tubular frame, and frame inside is axially provided with push rod along frame, and the lower end of push rod contacts with cam, and push rod is pumped with the rotation of motor; The upper end of push rod is consolidated with tubular drain pan, and the axle center place of drain pan inside is provided with iron core, is wound with coil on iron core, on the sidewall of drain pan, offers line outlet; Described disk desktop is arranged on drain pan top, and the upper surface of disk desktop is processed with multiple concentric circular troughs, is cast with every magnetosphere in circular trough; Disk desktop, drain pan, push rod, frame coaxially arrange.

Further, described disk desktop adopts low-carbon steel material to make.

Further, described coil outer wrap has water barrier.

Further, on described motor, approach switch is installed.

In the utility model device, disk desktop, iron core, coil and drain pan are equivalent to the effect of a magnechuck.It utilizes magnetic force to hold truncated cone circle mould, adopts direct current supply, has stablely, and suction is strong, without features such as remanent magnetism.This apparatus structure is simple, and effect is good, measures good technical equipment is provided for sand-cement slurry fluidity.

Brief description of the drawings

Fig. 1 is the utility model one-piece construction schematic diagram;

Fig. 2 is that the A-A in Fig. 1 cuts open to figure;

Fig. 3 is the vertical view of disk desktop;

The implication of number in the figure: 1-base, 2-approach switch, 3-motor, 4-cam, 5-enhancing rib, 6-push rod, 7-disk desktop, 8-tamper, 9-cover die, 10-truncated cone circle mould, 11-drain pan, 12-line outlet, 13-iron core, 14-coil, 15-water barrier, 16-every magnetosphere, 17-frame;

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.

Defer to technique scheme, the structure of this example as shown in Figure 1, a kind of sand-cement slurry fluidity pick-up unit, comprise disk desktop 7, frame 17 and base 1, frame 17 is vertical to be connected on base 1, around frame 17, be 120 ° of three enhancing ribs 5 that distribute, strengthen rib 5 and be cemented on frame 17 and base 1; In frame 17, be also consolidated with motor 3, cam 4 is installed on the output shaft of motor 3; Frame 17 is hollow tubular frame 17, and frame 17 inside are axially provided with push rod 6 along frame 17, and the lower end of push rod 6 contacts with cam 4, and push rod 6 is pumped with the rotation of motor; The upper end of push rod 6 is consolidated with tubular drain pan 11, and the axle center place of drain pan 11 inside is provided with iron core 13, is wound with coil 14 on iron core 13, offers line outlet 12 on the sidewall of drain pan 11; Described disk desktop 7 is arranged on drain pan 11 tops, and the upper surface of disk desktop 7 is processed with multiple concentric circular troughs, is equipped with every magnetosphere 16 in circular trough; Disk desktop 7, drain pan 11, push rod 6, frame 17 coaxially arrange.

The utility model is mainly in existing device, and truncated cone circle mould can not be fixed on disk desktop 7, and needs the hand steered defect of operating personnel to improve design.In this device, the below of disk desktop 7 is tubular drain pan 11, and iron core 13 is set in drain pan 11, and iron core 13 is wound around multiturn coil 14 around; In the time of coil 14 logical direct current, iron core 13 and coil 14 form an electromagnet.The line outlet 12 of the joint of coil 14 from drain pan 11 sidewalls drawn, and for the stability that ensures that coil 14 is worked, coil 14 is enclosed with the water barrier 15 that pitch or other waterproof materials are made around.

Disk desktop 7 is made up of mild carbon steel, and low-carbon steel material is a kind of soft magnetic material, under the magnetic field that can produce at electromagnet, is magnetized, and loses behind the magnetic field of electromagnet, and magnetic rapidly disappears.On the upper surface of disk desktop 7, be carved with multiple concentric grooves, the degree of depth of circular groove is less than the thickness of disk desktop 7, in concentric groove, be cast with every magnetosphere 16, made by aluminium wire every magnetosphere 16, it can make mild carbon steel in each interval all with N, S magnetic pole, promotes magnetic force to strengthen, and makes the effect of disk desktop 7 be equivalent to a magnetic suction disc, can firmly hold in process of the test and be placed on the iron truncated cone circle mould 10 on disk desktop 7, ensure it at sand loading slurry and smash while pressing die trial can not be moved; The characteristic of soft magnetic material is losing after magnetic field magnetisation it, and magnetic rapidly disappears, and therefore, after electromagnet power-off, magnetic force disappears, and truncated cone circle mould 10 can be taken off.

Approach switch 2 is installed on motor 3, can conveniently controls the running of motor 3.

The step that the utility model sand-cement slurry fluidity is measured is as follows:

1,, as device is not used in 24h, first open motor 3 and make the empty jumping one-period of disk desktop 7 25 times.

2, in preparing mortar, the apparatus of justifying mould 10, cover die 9, tamper 8 and contacting with mortar with moist cotton wiping disk desktop 7, truncated cone.

3, after wiping, truncated cone circle mould 10 is positioned on disk desktop 7, switches on to coil 14, disk desktop 7 produces magnetic field, holds truncated cone circle mould 10.

4, layering packs mortar into, evenly smashes pressure die trial from edge to center layering.

5, smash and press completely, disconnect coil 14 power supplys, magnetic field disappears, without magneticaction.

6, take off cover die 9, truncated cone circle mould 10 is mentioned straight up gently.

7, open motor 3 disk desktop 7 is beated, once, complete 25 times and beat p.s. in 25s ± 1s.

8, beat completely, measure sand-cement slurry fluidity.

Claims

1. a sand-cement slurry fluidity pick-up unit, comprise disk desktop (7), frame (17) and base (1), frame (17) is vertical to be connected on base (1), around frame (17), be 120 ° of three enhancing ribs (5) that distribute, strengthen rib (5) and be cemented on frame (17) and base (1); In frame (17), be also consolidated with motor (3), cam (4) is installed on the output shaft of motor (3); Frame (17) is hollow tubular frame, frame (17) inner along frame (17) be axially provided with push rod (6), the lower end of push rod (6) contacts with cam (4), and push rod (6) is pumped with the rotation of motor; It is characterized in that, the upper end of push rod (6) is consolidated with tubular drain pan (11), and the inner axle center place of drain pan (11) is provided with iron core (13), is wound with coil (14) on iron core (13), offers line outlet (12) on the sidewall of drain pan (11); Described disk desktop (7) is arranged on drain pan (11) top, and the upper surface of disk desktop (7) is processed with multiple concentric circular troughs, is equipped with every magnetosphere (16) in circular trough; Disk desktop (7), drain pan (11), push rod (6), frame (17) coaxially arrange.

2. sand-cement slurry fluidity pick-up unit as claimed in claim 1, is characterized in that, described disk desktop (7) adopts low-carbon steel material to make.

3. sand-cement slurry fluidity pick-up unit as claimed in claim 1, is characterized in that, described coil (14) outer wrap has water barrier (15).

4. sand-cement slurry fluidity pick-up unit as claimed in claim 1, is characterized in that, on described motor (3), approach switch (2) is installed.