WO2020238398A1

WO2020238398A1 - Intelligent feeding apparatus for concrete precast pile mold

Info

Publication number: WO2020238398A1
Application number: PCT/CN2020/082617
Authority: WO
Inventors: 李全民; 李近朱; 袁志洲; 李建宇; 王永; 颜景凯
Original assignee: 南京钜力智能制造技术研究院有限公司
Priority date: 2019-05-30
Filing date: 2020-03-31
Publication date: 2020-12-03
Also published as: CN110076902A

Abstract

The present invention relates to an intelligent feeding apparatus for a concrete precast pile mold, comprising a pump for conveying concrete, the intelligent feeding apparatus comprising a resistance reduction unit and a mobile adaptation unit. The resistance reduction unit comprises a pump, a pumping pipe, and a controller. A feeding channel is provided in the pumping pipe. The radial dimension of the feeding channel gradually increases from the end close to the pump to the other end. The pump is connected to the controller by means of a wire. The controller is adapted to send a signal to the pump to control the efficiency of the pump conveying concrete to the pumping pipe. The mobile adaptation unit comprises a platform, at least two weighing sensors, and a controller. The weighing sensors are disposed along the linear direction of the top surface of the mobile platform. A mold is provided on the top of the weighing sensors. According to the present invention, the structure of the pumping pipe is rationally improved to reduce the friction between the pumping pipe and the concrete. Moreover, with respect to a conventional simple way, the movement of the mold can be adjusted adaptively according to the amount of concrete injected in the mold to avoid the problem of the blockage of the pumping pipe because the mold is moved too slowly.

Description

Intelligent feeding device for concrete precast pile mould

Technical field

The invention relates to an intelligent feeding device for a concrete precast pile mould.

Background technique

At present, the concrete precast pile needs to be pumped and fed into the mold through a pumping pipe during the processing. The pumping pipe needs to be inserted into the mold before starting to pump the material. After the start of the feeding, the mold needs to gradually retreat according to the conveying efficiency of the concrete. The mold is filled with concrete; but the existing pumping pipes are basically made of ordinary steel pipes, which have poor wear resistance and are prone to wear during the process of conveying concrete. Generally, the problem of excessive wear and pipe burst occurs after less than two months of use. , The pipe burst during the concrete pumping process directly causes the concrete to burst and scatter, affecting the construction environment, delaying the processing progress, and the pumping pipe needs to be replaced after the pipe burst, which causes a certain cost loss to the processing enterprise; and when the mold is internal When the concrete slump is unstable, the problems of excessive dryness and poor fluidity of concrete are prone to occur, especially the existing mold moving speed and law are set according to the normal slump of the concrete, and the movement of the mold is a fixed "foolish" When the concrete slump is unstable, the movement of the mold cannot be adjusted adaptively, and the inner holes of the existing pumping pipes are all set with equal diameters. As the concrete in the mold gradually accumulates, there will be a blockage problem. It directly leads to the failure of the pumping pipe to be dredged and scrapped. The blockage will also increase the load of the pump and easily damage the pump. The existing concrete pumping work has many defects, and multiple operators are required to keep an eye on each link during the construction process. Be prepared to deal with unexpected problems at any time, increase the labor cost of the enterprise, and the production efficiency is not high.

Summary of the invention

The invention provides an intelligent feeding device for a concrete precast pile mold. Its structure is reasonable in design, and the pumping pipe structure is reasonably improved. The inner diameter of the concrete conveying adopts a unequal diameter design to reduce the friction between the pumping pipe and the concrete. It is helpful to improve the fluidity of concrete; and the movement of the mold is different from the traditional simple method. It can adjust the movement according to the amount of concrete injected in the mold to avoid the problem of the pumping pipe being blocked due to the slow movement of the mold. Control the speed to avoid the problem of insufficient pile compactness caused by the mold moving too fast, effectively reduce the problems in the concrete pumping process, improve production efficiency, and do not require too much labor, which saves the production cost of the enterprise. The problems existing in the prior art are solved.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: the intelligent feeding device of the concrete precast pile mold, including the pump for conveying concrete, including:

A resistance reduction unit, the resistance reduction unit includes the pump, a pumping pipe, and a controller. The pumping pipe is provided with a feeding channel, and the radial size of the feeding channel gradually changes from one end close to the pump to the other end The pump is connected to the controller via a wire, and the controller is adapted to send a signal to the pump to control the efficiency of the pump to deliver concrete to the pumping pipe;

A mobile adaptation unit, the mobile adaptation unit comprising a platform, at least two load cells and the controller, the load cells are arranged in a straight line direction along the top surface of the platform, and a mold is provided on the top of the load cell , The pumping pipe is provided above the platform, the load cell is connected to the controller via a wire, and the controller is connected to the driving mechanism of the platform via a wire;

The mold is adapted to extend into the pumping pipe, the load cell is adapted to obtain the unloaded mass of the mold and the real-time mass after pumping the concrete, and the load cell compares the unloaded mass with the The real-time quality is transmitted to the controller, and the controller is adapted to calculate and obtain the axial distance of the concrete inside the mold. The controller then sends a signal to the driving mechanism of the platform to cause the platform to move along The mold moves axially away from the pump.

Further, the pumping pipe includes a pipe wall, and a wear-resistant layer is provided in the pipe wall, and the wear-resistant layer forms the feeding channel.

Further, the wear-resistant layer is a ceramic wear-resistant layer.

Further, the load cells on the top surface of the platform are arranged at even intervals along a straight line.

Further, the driving mechanism of the platform includes a plurality of driving wheels arranged at the bottom of the platform, and a driven sprocket is provided outside the rotating shaft of each driving wheel, and the driven sprocket is connected by a chain, The chain is connected with the driving sprocket of the first motor; the first motor is connected with the controller via a wire.

Further, a track is provided below the platform, and the track is arranged in parallel along the axial direction of the pumping pipe, and the driving wheel at the bottom of the platform is matched with the track to make the platform move linearly along the track .

Further, the load cell is a hydraulic load cell.

Further, a bracket is provided on the top of the load cell, and the bracket is suitable for setting the mold to restrict the rolling of the mold.

Further, the top surface of the platform between the adjacent load cells is provided with a lifting and moving unit, and the lifting and moving unit is adapted to lift the mold upward and move it in a direction perpendicular to the displacement of the platform. mobile.

Further, the lifting and moving unit includes a mobile trolley arranged between the weighing sensors, a hydraulic cylinder is provided on the top of the mobile trolley, and a jack abutting against the mold is provided on the top of the hydraulic cylinder. Section; the rollers of the mobile trolley are connected to a second motor via a drive sprocket, and the second motor and hydraulic cylinder are respectively connected to the controller via wires.

The beneficial effect of the present invention adopting the above structure is that the structure design is reasonable, the structure of the pumping pipe is reasonably improved, and the inner diameter of the concrete conveying adopts an unequal diameter design, which reduces the friction between the pumping pipe and the concrete, and helps Improve the fluidity of the concrete; and the movement of the mold is different from the traditional simple way. It can be adjusted and moved adaptively according to the amount of concrete injected in the mold to avoid the problem of the pumping pipe being blocked due to the slow movement of the mold, and the speed can be controlled well. , To avoid the problem of insufficient pile compactness caused by the mold moving too fast, effectively reduce the problems in the concrete pumping process, improve production efficiency, and do not need to occupy too much labor, saving the production cost of the enterprise.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the present invention;

Figure 2 is a schematic diagram of the bracket structure of the present invention;

Figure 3 is a schematic diagram of the pumping pipe structure of the present invention;

Figure 4 is an electrical schematic diagram of the present invention.

In the figure, 1. pump; 2. pumping pipe; 201, pipe wall; 202, wear-resistant layer; 3. feeding channel; 4. platform; 5. mold; 6. load cell; 7. first motor; 8. Drive wheel; 9. Driven sprocket; 10. Chain; 11. Drive sprocket; 12. Track; 13. Bracket; 14. Mobile trolley; 15. Hydraulic cylinder; 16. Jacking part; 17. Roller ; 18. Drive sprocket; 19, the second motor.

Detailed ways

In order to clearly illustrate the technical characteristics of the present solution, the present invention will be described in detail below through specific implementations and in conjunction with the accompanying drawings.

In the following description, many specific details are set forth in order to fully understand this application. However, this application can also be implemented in other ways different from those described here. Therefore, the scope of protection of this application is not covered by the specific details disclosed below. Limitations of the embodiment.

In addition, in the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" "," "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings It is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the application.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, "a plurality of" means two or more than two, unless otherwise specifically defined.

In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , Or integrated; it can be a mechanical connection, it can be an electrical connection, or it can be communication; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction between two components . For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In this application, unless expressly stipulated and defined otherwise, the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. contact. In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean specific features described in conjunction with the embodiment or example , The structure, materials, or characteristics are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

As shown in Figure 1-4, the intelligent feeding device of the concrete precast pile mold includes a resistance reduction unit and a mobile adaptation unit. The resistance reduction unit includes a pump 1, a pumping pipe 2 and a controller. The pumping pipe 2 is equipped with a feeding device. Channel 3, the radial size of the feeding channel 3 gradually increases from one end close to the pump 1 to the other end; the pump 1 is connected to the controller via a wire, and the controller is adapted to send a signal to the pump 1 to control the pump 1 to The efficiency of the pumping pipe 2 for conveying concrete; the mobile adaptation unit includes a platform 4, at least two load cells 6 and a controller. The load cells 6 are arranged in a straight line along the top surface of the platform 4, and the top of the load cell 6 is provided with a mold 5. A pumping pipe 2 is provided above the platform 4. The load cell 6 is connected to the controller via a wire, and the controller is connected to the drive mechanism of the platform 4 via a wire; the mold 5 is suitable for the pumping pipe 2 to extend into, and the load cell 6 is suitable for obtaining the no-load mass of the mold 5 and the real-time mass after pumping the concrete. The load cell 6 transmits the no-load mass and real-time mass to the controller, and the controller is suitable for calculating and obtaining the axial direction of the concrete inside the mold 5 Distance, the controller then sends a signal to the drive mechanism of the platform 4 to move the platform 4 away from the pump 1 along the axis of the mold 5. When in use, the pump 1 sends the concrete into the pumping pipe 2, and the concrete enters the mold 5 through the pumping pipe 2. Because of the unique design of the feeding channel 3 in the pumping pipe 2, the inner diameter of the pumping pipe 2 is closer to the discharge end The larger is, the concrete flow resistance in the pumping pipe 2 can be gradually reduced. Compared with the equal-diameter design of the feeding channel 3 in the pumping pipe 2, concrete blockage is less likely to occur, and the impact of concrete on the inner wall of the pumping pipe 2 is reduced. The friction force of the load cell can reduce wear; and the overall weight of the mold 5 can be obtained in real time through the load cell 6 and transmitted to the controller. After the mold 5 moves to the load cell 6, the load cell does not start pumping concrete. 6 Transmit the initial weight of the mold 5 to the controller and record it. When the pumping starts, the concrete gradually fills the mold 5, the weight obtained by the load cell 6 gradually increases, and the controller subtracts the mold according to the real-time weight of the load cell 6 5 is the initial weight, the real-time concrete weight-M is obtained, using the weight-volume formula, M=ρ*πr ² *h, ρ is the density of the concrete, which can be measured in advance, r represents the radius size of the inner hole of the mold 5 (ie The radius of the concrete precast pile product), πr ² represents the cross-sectional area of the inner hole of the mold 5 (ie the area of the bottom surface of the concrete precast pile product), r can be obtained according to the specific model size of the mold 5, and h represents the length of the mold; using the above formula , Bring in the weight M measured by the controller, the value of h can be obtained, which represents the length of the concrete filled in the mold 5. Therefore, the controller can control the first motor 7 to drive the platform 4 and the mold 5 to move adaptively to accurately In accordance with the pumping volume of concrete, the problem of the pumping pipe 2 being blocked due to the slow movement of the mold 5 is avoided, and the speed can be controlled to avoid the problem of insufficient pile compactness caused by the excessive movement of the mold 5, effectively reducing the concrete pump The problem in the delivery process improves production efficiency, and does not require too much labor, which saves the production cost of the enterprise.

It is understandable that the controller can be a plc controller.

In a preferred embodiment, the pumping pipe 2 includes a pipe wall 201 in which a wear-resistant layer 202 is provided, and the wear-resistant layer 202 forms the feeding channel 3. By disposing the wear-resistant layer 202 in the pipe wall 201, the wear resistance of the feeding channel 3 is increased, and serious abrasion between the concrete and the inner wall of the pumping pipe 2 during the transportation process is avoided.

In a preferred embodiment, the wear-resistant layer 202 is a ceramic wear-resistant layer. The ceramic wear-resistant layer can be laid by the porcelain process, and the texture is hard and wear-resistant, which greatly increases the service life of the pumping pipe 2. After actual use tests, the service life of the improved pumping pipe 2 is increased to five times that of the traditional pumping pipe. Times.

In a preferred embodiment, the load cells 6 on the top surface of the platform 4 are evenly spaced along the linear direction. In order to improve the accurate measurement of the concrete input by the load cell 6, the load cell 6 is moved along the mould 5.

It is arranged at even intervals in the axial direction, and the average value of the measured data of the multiple load cells 6 subtracts the initial weight of the mold 5 to obtain the concrete input quantity, which makes the concrete input quantity measurement more accurate.

In a preferred embodiment, the driving mechanism of the platform 4 includes a plurality of driving wheels 8 arranged at the bottom of the platform 4, and a driven sprocket 9 is provided outside the rotating shaft of each driving wheel 8, and a chain is passed between the driven sprocket 9 10 is connected, the chain 10 is connected to the driving sprocket 11 of the first motor 7; the first motor 7 is connected to the controller via a wire. In use, the controller calculates according to the weight data fed back by the load cell 6, and obtains the concrete filling amount in the axial direction of the mold 5. By controlling the speed of the first motor 7, the driven sprocket 9 is driven to rotate through the driving sprocket 11 to Drive the driving wheel 8 to rotate, so that the mold 5 on the platform 4 can be moved adaptively. It can move accurately in accordance with the concrete input of the pumping pipe 2 to prevent the mold 5 from moving too slowly to block the pumping pipe 2, and moving too fast to affect the precast pile Tightness.

In a preferred embodiment, a track 12 is provided below the platform 4, and the track 12 is arranged in parallel along the axial direction of the pumping pipe 2. The driving wheel 8 at the bottom of the platform 4 and the track 12 cooperate to make the platform 4 linear along the track 12 mobile. When in use, make the driving wheel 8 slide more accurately along the track 12, avoid the position change of the mold 5 after the drive wheel 8 is offset, and will not affect the normal feeding of the pumping pipe 2, so that the movement of the mold 5 is always along the axial direction, avoiding Collision with pumping pipe 2.

In a preferred embodiment, the load cell 6 is a hydraulic load cell. When in use, the working principle of the hydraulic sensor is: when the gravity of the measured object is applied, the pressure of the hydraulic oil increases, and the degree of increase is proportional to the gravity. By measuring the increase in pressure, the quality of the measured object can be determined. The hydraulic sensor has a simple and firm structure and a large measuring range, suitable for application in the field of heavy concrete precast piles.

In a preferred embodiment, a bracket 13 is provided on the top of the load cell 6, and the bracket 13 is adapted to be provided with a mold 5 to limit the rolling of the mold 5. Specifically, the bracket 13 uses a V-shaped bracket to avoid the mold 5.

When the rolling position occurs, the stability of the mold 5 during the concrete pumping process is ensured.

It is worth mentioning that a cushion pad is provided on the surface of the bracket 13 to increase the friction with the mold 5 and protect the surface of the mold 5 from bumps. The specific cushion may be a rubber cushion.

In a preferred embodiment, the top surface of the platform 4 between the adjacent load cells 6 is provided with a lifting and moving unit, and the lifting and moving unit is adapted to lift the mold 5 upward and move it in a direction perpendicular to the displacement of the platform 4. In use, when the mold 5 is filled with concrete, the prior art generally uses a crane to lift the mold 5 and transport it away, but this solution can use the lifting and moving unit to lift the mold from the position of the load cell 6 and move it to the target position. , No need for repeated operations of the crane, greatly improving the operating efficiency of the mold and saving production costs.

In a preferred embodiment, the lifting mobile unit includes a mobile trolley 14 arranged between the load cells 6. The top of the mobile trolley 14 is provided with a hydraulic cylinder 15, and the top of the hydraulic cylinder 15 is provided with a jack that abuts the mold 5. Section 16; the roller 17 of the mobile trolley 14 is connected to the second motor 19 via the drive sprocket 18, and the second motor 19 and the hydraulic cylinder 15 are respectively connected to the controller via wires. When in use, the controller controls the hydraulic cylinder 15 to lift up the mold 5 to lift the mold 5 from the load cell 6, and then through the control and the second motor 19 to realize the lateral movement of the mobile trolley 14 to move the mold 5 laterally away from the platform 4 It is then transported to the target position; the top surface of the jacking portion 16 can also be provided with the same structure as the bracket 13 to prevent the mold 5 from rolling.

The above-mentioned specific implementation manners should not be regarded as a limitation to the protection scope of the present invention. For those skilled in the art, any alternative improvements or changes made to the implementation manners of the present invention fall within the protection scope of the present invention.

Anything not described in detail in the present invention is the well-known technique of those skilled in the art.

Claims

The intelligent feeding device for the concrete precast pile mould, including the pump for conveying concrete, is characterized in that it includes:

A resistance reduction unit, the resistance reduction unit includes the pump, a pumping pipe, and a controller. The pumping pipe is provided with a feeding channel, and the radial size of the feeding channel gradually changes from one end close to the pump to the other end The pump is connected to a controller via a wire, and the controller is adapted to send a signal to the pump to control the efficiency of the pump to deliver concrete to the pumping pipe;

A mobile adaptation unit, the mobile adaptation unit comprising a platform, at least two load cells and the controller, the load cells are arranged in a straight line direction along the top surface of the mobile platform, and the top of the load cell is provided with A mold, the pumping pipe is arranged above the platform, the load cell is connected to the controller via a wire, and the controller is connected to the driving mechanism of the platform via a wire;

The mold is adapted to extend into the pumping pipe, the load cell is adapted to obtain the unloaded mass of the mold and the real-time mass after pumping the concrete, and the load cell compares the unloaded mass with the The real-time quality is transmitted to the controller, and the controller is adapted to calculate and obtain the axial distance of the concrete inside the mold. The controller then sends a signal to the driving mechanism of the platform to cause the platform to move along The mold moves axially away from the pump.
The intelligent feeding device for the concrete precast pile mold according to claim 1, wherein the pumping pipe includes a pipe wall, and a wear-resistant layer is provided in the pipe wall, and the wear-resistant layer forms the feeding channel .
The intelligent feeding device of the concrete precast pile mold according to claim 2, wherein the wear-resistant layer is a ceramic wear-resistant layer.
The intelligent feeding device of the concrete precast pile mold according to claim 1, wherein the load cells on the top surface of the platform are arranged at even intervals along a straight line.
The intelligent feeding device for the concrete precast pile mold according to claim 4, wherein the driving mechanism of the platform includes a plurality of driving wheels arranged at the bottom of the platform, and the rotating shaft of each driving wheel is provided with The driven sprocket is connected by a chain, and the chain is connected with the driving sprocket of the first motor; the first motor is connected with the controller via a wire.
The intelligent feeding device of the concrete precast pile mold according to claim 5, wherein a track is provided below the platform, and the track is arranged parallel to the axial direction of the pumping pipe, and the bottom of the platform The driving wheels cooperate with the track to make the platform move linearly along the track.
The intelligent feeding device for the concrete precast pile mold according to claim 5 or 6, wherein the load cell is a hydraulic load cell.
The intelligent feeding device for the concrete precast pile mold according to claim 7, wherein a bracket is provided on the top of the load cell, and the bracket is suitable for setting the mold to limit the rolling of the mold .
The intelligent feeding device for the concrete precast pile mold according to claim 8, wherein the top surface of the platform between the adjacent load cells is provided with a lifting and moving unit, and the lifting and moving unit is suitable for lifting upwards. Lift the mold and move it in a direction perpendicular to the displacement of the platform.
The intelligent feeding device for the concrete precast pile mold according to claim 9, wherein the lifting and moving unit comprises a mobile trolley arranged between the load cells, and a hydraulic cylinder is provided on the top of the mobile trolley, The top of the hydraulic cylinder is provided with a jacking part that abuts the mold; the rollers of the mobile trolley are connected with a second motor via a transmission sprocket, and the second motor and the hydraulic cylinder are respectively connected to the control via wires器连接。 Connected.