阅读说明：本技术 一种新拌滑模摊铺混凝土施工和易性的测定装置 (Survey device of freshly mixed slip form paving concrete construction workability ) 是由 王旭昊 甘珑 余海洋 张亚刚 唐仲达 李联伟 刘涛 李程 于 2019-09-20 设计创作，主要内容包括：本发明公开了一种新拌滑模摊铺混凝土施工和易性的测定装置,包括电动机、钢绞线、控制系统、箱体以及设置于箱体内的定滑轮、混凝土容器及浸入模块；定滑轮固定于箱体的顶部,混凝土容器放置于箱体的底部,且混凝土容器的顶部开口,钢绞线的一端与电动机的输出轴相连接,钢绞线的另一端绕过定滑轮固定于浸入模块的顶部,浸入模块位于混凝土容器顶部开口的正上方,箱体顶部的内壁上设置有用于检测箱体顶部与浸入模块之间间距的激光测距仪,激光测距仪的输出端与控制系统的输入端相连接,控制系统的输出端与电动机的控制端相连接,该装置能够测量摊铺混凝土施工和易性。(The invention discloses a device for measuring workability of newly-mixed slip form paving concrete construction, which comprises a motor, a steel strand, a control system, a box body, a fixed pulley, a concrete container and an immersion module, wherein the fixed pulley, the concrete container and the immersion module are arranged in the box body; the fixed pulley is fixed in the top of box, the concrete container is placed in the bottom of box, and the open-top of concrete container, the one end of steel strand wires is connected with the output shaft of motor, the other end of steel strand wires is fixed in the top of immersing the module around the fixed pulley, it is located concrete container open-top directly over to immerse the module, be provided with the laser range finder who is used for detecting the box top and immerses interval between the module on the inner wall at box top, the output of laser range finder is connected with control system's input, control system's output is connected with the control end of motor, the device can measure the paving concrete construction workability.)

1. A device for measuring workability of concrete paving construction of a newly-mixed slip form is characterized by comprising a motor (6), a steel strand (9), a control system, a box body (2), a fixed pulley (8) arranged in the box body (2), a concrete container (10) and an immersion module (17);

fixed pulley (8) are fixed in the top of box (2), concrete container (10) are placed in the bottom of box (2), and the open-top of concrete container (10), the one end of steel strand wires (9) is connected with the output shaft of motor (6), the other end of steel strand wires (9) is fixed in the top of immersing module (17) around fixed pulley (8), it is located concrete container (10) open-top directly over to immerse module (17), be provided with on the inner wall at box (2) top and be used for detecting box (2) top and immerse laser range finder (7) of interval between module (17), the output of laser range finder (7) is connected with control system's input, control system's output is connected with the control end of motor (6).

2. The device for determining the workability of fresh slipform paving concrete construction according to claim 1, characterized in that a slide rail (15) is fixed in the box (2), a slide block is arranged on the slide rail (15), and the laser distance meter (7) is positioned on the slide block.

3. The apparatus for determining the workability of fresh slipform paving concrete construction according to claim 1, characterized in that the immersion module (17) comprises an immersion sphere (18), a spacer (19), a vibrator (20), a rectangular frame (21) and a vertical shaft (22), wherein the immersion sphere (18) is fixed to the bottom of the rectangular frame (21) by the spacer (19), the upper end of the vertical shaft (22) is connected to the steel strand (9), the lower end of the vertical shaft (22) is fixed to the top of the rectangular frame (21), the vibrator (20) is located in the rectangular frame (21), and the control end of the vibrator (20) is connected to the output end of the control system.

4. The apparatus for determining the workability of fresh slipform paving concrete construction according to claim 3, characterized in that the control system comprises a display screen (11), keys (12), a control panel (4), a computer system (5) and a power supply (1) for supplying electrical energy, wherein the computer system (5) is connected to the control panel (4), the display screen (11), the keys (12), the vibrator (20), the motor (6) and the laser distance meter (7).

5. The device for determining the workability of construction of fresh-mix slipform pavers of claim 1, characterized in that it further comprises a restraining beam (16) for limiting the immersion module (17), wherein the restraining beam (16) is fixed in the box (2), the restraining beam (16) being provided with a through hole for the vertical shaft (22) to pass through.

6. Device for determining the workability of fresh slipform paving concrete construction according to claim 1, characterized in that the bottom of the box (2) is provided with a base (3) and the concrete container (10) is placed on the base (3).

7. The device for measuring the workability of fresh slipform paving concrete construction according to claim 1, characterized in that a steel strand pipeline (14) is further arranged in the box body (2), the steel strand pipeline (14) is fixed on the top of the box body (2), and the steel strand (9) passes through the steel strand pipeline (14) and then bypasses the fixed pulley (8).

8. Device for determining the workability of fresh slipform paving concrete construction according to claim 1, characterized in that the sides of the box (2) are provided with an access opening (13) for placing and removing the concrete container (10).

Technical Field

The invention belongs to the technical field of cement concrete construction workability measuring methods, and relates to a measuring device for workability of newly-mixed slip-form paved concrete construction.

Background

The cement concrete is formed by stirring, forming and curing cement, coarse aggregate, fine aggregate, water and the like, and is an important material for paving a cement concrete pavement. The construction workability of the freshly mixed concrete is one of important technical properties of the cement concrete, the construction workability not only influences the construction process of the cement pavement, but also influences the strength, durability and the like of the cement concrete after the later hardening to a great extent, and directly influences the service life of the pavement, so that the accurate measurement of the construction workability of the freshly mixed cement concrete has important significance. At present, according to the provisions of the national industry standard road engineering cement and cement concrete test regulations, a slump test is adopted for measuring the freshly mixed concrete, and the construction workability of the freshly mixed concrete is represented by the slump height, namely the slump, of the concrete after the cylindrical concrete is lifted up. The slip form paver is mainly adopted for the construction of the cement concrete pavement, and the construction workability is also determined by a slump test for guiding the construction of the newly-mixed slip form paved concrete at present.

However, the slump test has been proved by indoor tests and construction practices to have a lot of unreasonable points. First, with the large amount of admixture used in concrete, slump values have not been a good indication of workability. Secondly, two kinds of concrete with the same slump tend to show different construction characteristics when being constructed by using a slip film paver. The slump test is a static test method, and cannot represent the construction workability of concrete under the vibration condition, and when the slip-film paving concrete is constructed, the concrete is in a vibration and disturbed state, and the workability is completely different from that of the concrete without vibration, so that the slump test cannot guide the slip-film paving concrete construction. However, the workability of concrete under vibration is closely related to the construction condition, the strength and durability of the concrete at the later stage, and thus a method for determining the workability of slip-film concrete spreading is needed to guide the construction and design.

Disclosure of Invention

The object of the present invention is to overcome the drawbacks of the prior art mentioned above and to provide a device for determining the workability of freshly mixed slipform concrete pavements, which is capable of measuring the workability of concrete pavements.

In order to achieve the aim, the device for measuring the workability of the freshly mixed sliding form paving concrete construction comprises a motor, a steel strand, a control system, a box body, a fixed pulley, a concrete container and an immersion module, wherein the fixed pulley, the concrete container and the immersion module are arranged in the box body;

the fixed pulley is fixed in the top of box, the concrete container is placed in the bottom of box, and the open-top of concrete container, the one end of steel strand wires is connected with the output shaft of motor, the other end of steel strand wires is fixed in the top of immersing the module around the fixed pulley, it is located concrete container open-top directly over to immerse the module, be provided with the laser range finder who is used for detecting the box top and immerses interval between the module on the inner wall at box top, the output of laser range finder is connected with control system's input, control system's output is connected with the control end of motor.

A sliding rail is fixed in the box body, a sliding block is arranged on the sliding rail, and the laser range finder is located on the sliding block.

The immersion module comprises an immersion ball body, a cushion block, a vibrator, a rectangular frame and a vertical shaft, wherein the immersion ball body is fixed at the bottom of the rectangular frame through the cushion block, the upper end of the vertical shaft is connected with a steel strand, the lower end of the vertical shaft is fixed at the top of the rectangular frame, the vibrator is located in the rectangular frame, and the control end of the vibrator is connected with the output end of the control system.

The control system comprises a display screen, a key, a control panel, a computer system and a power supply for supplying electric energy, wherein the computer system is connected with the control panel, the display screen, the key, a vibrator, a motor and the laser range finder.

The immersion module is characterized by further comprising a restraining beam for limiting the immersion module, wherein the restraining beam is fixed in the box body, and a through hole for the vertical shaft to pass through is formed in the restraining beam.

The bottom of box is provided with the base, and the concrete container is placed on the base.

A steel strand pipeline is further arranged in the box body and fixed to the top of the box body, and steel strands pass through the steel strand pipeline and then pass around the fixed pulley.

The side of the box body is provided with an entrance used for placing and taking out the concrete container.

The invention has the following beneficial effects:

when the measuring device for workability of freshly mixed slipform paved concrete construction is used, the immersion depth of the immersion sphere in the concrete is measured by a laser distance meter, and the slump of the concrete is calculated to be 2 x H 'according to the measured immersion depth of the immersion sphere in the concrete'₂And 2H 'according to the slump of the concrete'₂And (5) representing the construction workability of the concrete in a vibration-free state. In addition, the vibrator is turned on, and the immersion depth H obtained by multiple measurements₃Linear fitting is carried out to obtain a unitary function, then the slope k of the unitary function is utilized to represent the construction workability of the slipform paving concrete in the vibration state, the operation is convenient, the labor and the time are saved, the problem that no method exists at present to determine the construction workability of the slipform paving concrete in the vibration state without indexes is solved, and meanwhile, the construction workability of the common concrete in the vibration-free state is measuredIn time, the dynamic measurement is carried out by utilizing the laser range finder, compared with the traditional slump method, the measurement result is more accurate, and the method has wide application space.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the structure of the immersion module 17 according to the present invention.

Wherein, 1 is a power supply, 2 is a box body, 3 is a base, 4 is a control panel, 5 is a computer system, 6 is a motor, 7 is a laser range finder, 8 is a fixed pulley, 9 is a steel strand, 10 is a concrete container, 11 is a display screen, 12 is a key, 13 is an inlet and an outlet, 14 is a steel strand pipeline, 15 is a slide rail, 16 is a restraining beam, 17 is an immersion module, 18 is an immersion sphere, 19 is a cushion block, 20 is a vibrator, 21 is a rectangular frame, and 22 is a vertical axis.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1 and 2, the device for measuring workability of freshly mixed slip-form concrete paving construction according to the present invention includes a motor 6, a steel strand 9, a control system, a box body 2, a fixed pulley 8 disposed in the box body 2, a concrete container 10, and an immersion module 17; fixed pulley 8 is fixed in the top of box 2, concrete container 10 is placed in the bottom of box 2, and concrete container 10's open-top, the one end of steel strand wires 9 is connected with motor 6's output shaft, steel strand wires 9's the other end is fixed in the top of immersing module 17 around fixed pulley 8, it is located concrete container 10 open-top directly over to immerse module 17, be provided with on the inner wall at box 2 top and be used for detecting 2 tops of box and immerse the laser range finder 7 of interval between the module 17, the output of laser range finder 7 is connected with control system's input, control system's output is connected with motor 6's control end.

Specifically, a slide rail 15 is fixed in the box body 2, a slide block is arranged on the slide rail 15, and the laser range finder 7 is positioned on the slide block; the bottom of the box body 2 is provided with a base 3, and a concrete container 10 is placed on the base 3; a steel strand pipeline 14 is further arranged in the box body 2, the steel strand pipeline 14 is fixed to the top of the box body 2, and the steel strands 9 pass through the steel strand pipeline 14 and then wind around the fixed pulley 8; the side of the box body 2 is provided with an entrance 13 for placing and taking out the concrete container 10.

It should be noted that the immersion module 17 includes an immersion sphere 18, a spacer 19, a vibrator 20, a rectangular frame 21 and a vertical shaft 22, wherein the immersion sphere 18 is fixed at the bottom of the rectangular frame 21 through the spacer 19, the upper end of the vertical shaft 22 is connected with the steel strand 9, the lower end of the vertical shaft 22 is fixed at the top of the rectangular frame 21, the vibrator 20 is located in the rectangular frame 21, and the control end of the vibrator 20 is connected with the output end of the control system. The control system comprises a display screen 11, keys 12, a control panel 4, a computer system 5 and a power supply 1 for supplying electric energy, wherein the computer system 5 is connected with the control panel 4, the display screen 11, the keys 12, a vibrator 20, a motor 6 and a laser range finder 7.

The invention also comprises a restraint beam 16 for limiting the immersion module 17, wherein the restraint beam 16 is fixed in the box body 2, and a through hole for the vertical shaft 22 to pass through is formed in the restraint beam 16.