Large-height-difference concrete speed reduction control method

Abstract

The invention provides a large-height-difference concrete speed reduction control method, and belongs to the technical field of large-height-difference concrete speed reduction. A discharging guide pipe is arranged on a vertical shaft, a control chain of a closed-loop structure is arranged in the discharging guide pipe, the control chain penetrates through the discharging guide pipe, and a concrete damping device is arranged on the control chain; after concrete enters from the upper end of the discharging guide pipe, a section of concrete is damped by the concrete damping device arranged on the control chain, and the concrete drives the control chain to move due to gravity. Potential energy of concrete is converted into kinetic energy of self rotation, kinetic energy of chain cleaning and the like, speed reduction of the concrete in the vertical shaft is achieved, meanwhile, the descending concrete is blocked in a segmented mode through the damping balls, the situation that aggregate is separated after the concrete descends to the bottom is effectively avoided, and meanwhile the multi-gear power generation device is arranged, so that energy is saved. Power generation control is conducted according to the required descending speed, and concrete potential energy is effectively converted into electric energy to be stored or converted into kinetic energy needing to drive rotating equipment.

Description

Technical Field

[0001] The invention relates to the technical field of concrete speed reduction with large height difference, and in particular to a concrete speed reduction control method with large height difference. Background Art

[0002] There are many ways to transport concrete, and vertical transportation is a common way to transport concrete. When transporting concrete vertically with a high drop, chutes are often used in the prior art for vertical transportation. However, in an application environment with a large height difference, the concrete has a large downward potential energy, and segregation is likely to occur during the transportation process, resulting in the concrete being unusable, delaying the construction period, and reducing the construction quality. When the transportation length is long, negative pressure is likely to be generated in the pipeline. In addition, a large height difference is likely to cause splashing of retarder, posing a safety hazard.

[0003] Usually, vertical transportation of concrete pouring in a shaft is carried out by pump trucks from the bottom of the shaft upward, by hanging tanks for lifting, by chute tubes for downward sliding from the wellhead, and by chutes for downward transportation from the wellhead. However, each scheme has disadvantages to varying degrees, such as high construction difficulty, difficulty in handling pipe blockage, high construction cost, aggregate separation, and difficulty in ensuring the quality of concrete construction. Therefore, it is necessary to design a speed reduction control method for concrete with large height differences. Summary of the invention

[0004] The purpose of the present invention is to provide a method for controlling the speed reduction of concrete with large height differences, so as to solve the technical problems that the existing concrete with large height differences is easy to cause aggregate separation and the large height difference is easy to cause slow-setting soil splashing.

[0005] This method is mainly aimed at the situation where concrete with a large height difference in the shaft is transported from top to bottom.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A speed reduction control method for concrete with large height differences is provided. A material discharge conduit is arranged on the vertical shaft. A control chain with a closed-loop structure is arranged in the material discharge conduit. The control chain is arranged through the material discharge conduit. A plurality of concrete damping devices are arranged on the control chain. After the concrete enters from the upper end of the material discharge conduit, a section of concrete is damped by the concrete damping device arranged on the control chain. The concrete drives the control chain to move due to gravity. An energy conversion device is arranged on the control chain outside the material discharge conduit to convert the potential energy of the concrete into electrical energy or kinetic energy to reduce the speed of the concrete. At the same time, the concrete damping device divides the concrete in the material discharge conduit into several sections to avoid aggregate separation.

[0008] Furthermore, a discharge chute is arranged at the top of the discharge conduit, and a control chain is arranged through the discharge chute. The discharge chute is used to gather concrete, and then the control chain controls the concrete to reach the bottom of the shaft.

[0009] Furthermore, a lower hopper is provided at the bottom of the lower material conduit, a discharge port is provided at the bottom of the lower hopper, a control chain is passed through the lower hopper, and the lower hopper transports segmented concrete to the lower hopper to avoid impact of the concrete on the lower hopper.

[0010] Furthermore, the control chain passes through a cleaning device, and the cleaning device cleans the control chain occupied by concrete, and the cleaning device is arranged at the bottom of the shaft.

[0011] Furthermore, the cleaning device includes a cleaning water tank, a guide wheel and a lower driving wheel. The guide wheel is arranged above the unloading chute and the cleaning water tank. The cleaning water tank is filled with cleaning water. The lower driving wheel is arranged inside the cleaning water tank, and the cleaning water soaks the lower driving wheel. The control chain comes out from the bottom of the unloading conduit and goes around to the top of the guide wheel, and then goes around to the bottom of the lower driving wheel.

[0012] Furthermore, a rotating washing device is also provided in the cleaning water tank. A driving wheel is coaxially provided with the lower driving wheel. The radius of the driving wheel is more than twice that of the lower driving wheel. The driving wheel drives the secondary wheel provided on the rotating washing device to rotate. The rotating cleaning speed of the rotating washing device is twice that of the lower driving wheel.

[0013] Furthermore, a rotating driving wheel is also provided on the control chain. The control chain is wound around the top of the rotating driving wheel. The control chain is arranged above the unloading chute. The rotating driving wheel is provided with a power generation and energy storage device. The rotation of the rotating driving wheel drives the power generation and energy storage device to generate electricity. A speed detector is provided on the rotating driving wheel. When the speed is greater than a preset peak value, the power generation and energy storage device is controlled to increase the power generation gear so that the control chain is less than the preset peak value. When the soda detected by the rotating driving wheel is less than the preset valley value, the power generation gear of the power generation and energy storage device is reduced so that the speed is maintained between the preset peak value and the preset valley value.

[0014] Furthermore, the concrete damping device comprises a plurality of damping balls, which are arranged at equal intervals on the control chain, and the diameter of the damping balls is smaller than the inner diameter of the feeding conduit.

[0015] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0016] The present invention realizes the deceleration of concrete in the shaft by converting the potential energy of concrete into the kinetic energy of its own rotation, the kinetic energy of the cleaning chain, etc., and at the same time, the descending concrete is segmentedly blocked by damping balls, which effectively avoids the aggregate separation after the concrete descends to the bottom. At the same time, a multi-speed power generation device is set to control the power generation according to the required descending speed, effectively converting the potential energy of concrete into electrical energy storage or into the kinetic energy required to drive the rotating equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the device structure for implementing the method of the present invention.

[0018] In the attached drawings, 1-rotating driving wheel, 2-discharging chute, 3-control chain, 4-damping ball, 5-discharging conduit, 6-discharging port, 7-cleaning water tank, 8-guide wheel, 9-lower driving wheel, 10-discharging hopper. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0020] like Figure 1 As shown, a method for controlling the speed reduction of concrete with a large height difference is provided. A feed pipe 5 is arranged on the vertical shaft. A control chain 3 with a closed-loop structure is arranged in the feed pipe 5. The control chain 3 passes through the feed pipe 5. A plurality of concrete damping devices are arranged on the control chain 3. After the concrete enters from the upper end of the feed pipe 5, a section of concrete is damped by the concrete damping device arranged on the control chain 3. The concrete drives the control chain 3 to move due to gravity. An energy conversion device is arranged on the control chain 3 outside the feed pipe 5 to convert the potential energy of the concrete into electrical energy or kinetic energy to reduce the speed of the concrete. At the same time, the concrete damping device divides the concrete in the feed pipe 5 into a plurality of sections to avoid the separation of aggregates.

[0021] By separating the descending concrete into sections and then driving the chain to reduce speed, the speed of the concrete can be reduced and the separation of concrete aggregate can be avoided, killing two birds with one stone. The control chain 3 is meshed with the gear. The descending speed of the control chain 3 is externally controlled to control the speed of the concrete.

[0022] In the embodiment of the present invention, a feeding chute 2 is provided at the top of the feeding conduit 5, and a control chain 3 is provided through the feeding chute 2. The feeding chute 2 is used to gather concrete, and then the concrete is controlled by the control chain 3 to reach the bottom of the shaft. The feeding chute 2 is provided as a funnel structure, and the bottom of the feeding chute 2 is connected to the feeding conduit 5, and the feeding chute 2 gathers the concrete to the top of the feeding conduit 5.

[0023] In the embodiment of the present invention, a lower hopper 10 is provided at the bottom of the lower material conduit 5, a discharge port 6 is provided at the bottom of the lower hopper 10, and the control chain 3 is arranged through the lower hopper 10. The lower hopper 10 transports the segmented concrete to the lower hopper 10 to prevent the concrete from impacting the lower hopper 10. The lower hopper 10 is used to collect concrete and buffer concrete, so as to realize the collection and mixing of concrete. A stirring device may also be provided inside the lower hopper 10, and the power of the stirring device is converted from the kinetic potential energy of the concrete into kinetic energy to realize secondary mixing of the concrete.

[0024] In the embodiment of the present invention, the control chain 3 passes through a cleaning device, and the cleaning device cleans the control chain 3 occupying the concrete. The cleaning device is arranged at the bottom of the shaft. The cleaning device includes a cleaning water tank 7, a guide wheel 8 and a lower driving wheel 9. The guide wheel 8 is arranged above the unloading chute 2 and the cleaning water tank 7. The cleaning water tank 7 is filled with cleaning water. The lower driving wheel 9 is arranged inside the cleaning water tank 7, and the cleaning water soaks the lower driving wheel 9. After the control chain 3 comes out from the bottom of the unloading conduit 5, it goes around to the top of the guide wheel 8, and then goes around to the bottom of the lower driving wheel 9.

[0025] In the embodiment of the present invention, a rotating scrubbing device is further provided in the washing water tank 7, and a driving wheel is coaxially provided on the lower driving wheel 9, and the radius of the driving wheel is more than twice that of the lower driving wheel 9. The driving wheel drives the secondary wheel provided on the rotating scrubbing device to rotate, and the speed of the rotating scrubbing device to rotate and clean is twice that of the lower driving wheel 9. By providing a coaxial gear with twice the radius, the driven scrubbing brush can clean faster and more cleanly.

[0026] In the embodiment of the present invention, a rotating driving wheel 1 is also provided on the control chain 3, the control chain 3 is wound around the top of the rotating driving wheel 1, the control chain 3 is arranged above the unloading chute 2, the rotating driving wheel 1 is provided with a power generation and energy storage device, the rotating driving wheel 1 rotates to drive the power generation and energy storage device to generate electricity, and a speed detector is provided on the rotating driving wheel 1. When the speed is greater than the preset peak value, the power generation and energy storage device is controlled to increase the power generation gear so that the control chain 3 is less than the preset peak value. When the soda of the rotating driving wheel 1 is detected to be less than the preset valley value, the power generation gear of the power generation and energy storage device is reduced so that the speed is maintained between the preset peak value and the preset valley value.

[0027] In the embodiment of the present invention, the concrete damping device includes a plurality of damping balls 4, which are arranged at equal intervals on the control chain 3, and the diameter of the damping balls 4 is smaller than the inner diameter of the feeding conduit 5. The damping balls 4 are arranged as strong metal balls or strong plastic balls.

[0028] All the gears driving the control chain 3 to rotate in the present invention are set to circular arc gear gaps, mainly to meet the passage of the damping ball 4 set on the control chain 3. When passing through, the damping ball 4 is just stuck between the teeth. At the same time, a secondary wheel slot is also provided on the damping ball 4. In the mobile mode, the teeth are directly stuck in the slot of the damping ball 4 to realize rotation.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for controlling the speed reduction of concrete with large height difference, characterized in that: A material discharge conduit (5) is arranged on the vertical shaft, and a control chain (3) with a closed-loop structure is arranged in the material discharge conduit (5). The control chain (3) passes through the material discharge conduit (5), and a plurality of concrete damping devices are arranged on the control chain (3). After the concrete enters from the upper end of the material discharge conduit (5), a section of concrete is damped by the concrete damping device arranged on the control chain (3). The concrete drives the control chain (3) to move due to gravity. An energy conversion device is arranged on the control chain (3) outside the material discharge conduit (5) to convert the potential energy of the concrete into electrical energy or kinetic energy, so as to reduce the speed of the concrete. At the same time, the concrete damping device divides the concrete in the material discharge conduit (5) into a plurality of sections, so as to avoid the separation of aggregates.

2. The method for controlling the speed reduction of concrete with large height difference according to claim 1 is characterized in that: A material discharge chute (2) is arranged at the top of the material discharge conduit (5), and a control chain (3) is arranged through the material discharge chute (2). The material discharge chute (2) is used to gather concrete, and then the control chain (3) controls the concrete to reach the bottom of the shaft.

3. The method for controlling the speed reduction of concrete with large height difference according to claim 2 is characterized in that: A lower hopper (10) is arranged at the bottom of the lower material conduit (5), a discharge port (6) is arranged at the bottom of the lower hopper (10), a control chain (3) is arranged through the lower hopper (10), and the lower hopper (10) transports segmented concrete to the lower hopper (10) to prevent the concrete from impacting the lower hopper (10).

4. The method for controlling the speed reduction of concrete with large height difference according to claim 3 is characterized in that: The control chain (3) passes through a cleaning device, and the cleaning device cleans the control chain (3) occupied by concrete. The cleaning device is arranged at the bottom of the shaft.

5. The method for controlling the speed reduction of concrete with large height difference according to claim 4 is characterized in that: The cleaning device comprises a cleaning water tank (7), a guide wheel (8) and a lower driving wheel (9), wherein the guide wheel (8) is arranged above the unloading chute (2) and the cleaning water tank (7), the cleaning water tank (7) is filled with cleaning water, the lower driving wheel (9) is arranged inside the cleaning water tank (7), and the cleaning water soaks the lower driving wheel (9), and the control chain (3) comes out from the bottom of the unloading conduit (5) and goes around to the top of the guide wheel (8), and then goes around to the bottom of the lower driving wheel (9).

6. The method for controlling the speed reduction of concrete with large height difference according to claim 5 is characterized in that: A rotating scrubbing device is also provided in the cleaning water tank (7). A driving wheel is coaxially provided on the lower driving wheel (9). The radius of the driving wheel is more than twice that of the lower driving wheel (9). The driving wheel drives the secondary wheel provided on the rotating scrubbing device to rotate. The speed of the rotating scrubbing device for cleaning is twice that of the lower driving wheel (9).

7. The method for controlling the speed reduction of concrete with large height difference according to claim 6 is characterized in that: A rotating driving wheel (1) is also provided on the control chain (3). The control chain (3) is wound around the top of the rotating driving wheel (1). The control chain (3) is arranged above the unloading chute (2). The rotating driving wheel (1) is provided with a power generation and energy storage device. The rotating driving wheel (1) rotates to drive the power generation and energy storage device to generate electricity. A speed detector is provided on the rotating driving wheel (1). When the speed is greater than a preset peak value, the power generation and energy storage device is controlled to increase the power generation gear so that the control chain (3) is less than the preset peak value. When the soda detected by the rotating driving wheel (1) is less than a preset valley value, the power generation gear of the power generation and energy storage device is reduced so that the speed is maintained between the preset peak value and the preset valley value.

8. The method for controlling the speed reduction of concrete with large height difference according to claim 7 is characterized in that: The concrete damping device comprises a plurality of damping balls (4), which are arranged at equal intervals on the control chain (3), and the diameter of the damping balls (4) is smaller than the inner diameter of the feeding conduit (5).

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