Device for long-distance concrete pumping

Abstract

The invention belongs to the technical field of concrete conveying, and particularly relates to a long-distance concrete pumping device which comprises a plurality of pumping mixing mechanisms communicated end to end, each pumping mixing mechanism comprises a shell, a balloon capable of being contracted and expanded is arranged in the shell, and a booster cavity is formed between the outer wall of the balloon and the inner wall of the shell; the one-way feeding mechanisms are located below the shell, the discharging ends of the one-way feeding mechanisms communicate with the feeding ends of the balloons, and the feeding end of the one-way feeding mechanism located at the bottom communicates with the discharging end of a concrete pump truck; the discharging mechanisms are located above the shell, the feeding ends of the discharging mechanisms communicate with the discharging ends of the balloons, and the discharging end of the discharging mechanism located on the top communicates with the feeding end of a material distributing machine; the plurality of pumping mixing mechanisms located in the middle are arranged in a manner that the discharging end of the discharging mechanism of the pumping mixing mechanism located on the lower portion communicates with the feeding end of the one-way feeding mechanism of the pumping mixing mechanism located on the upper portion; the stirring device is arranged in the balloon; and the pressure supplementing mechanism is communicated with the pressurizing cavity.

Description

Technical Field

[0001] The present invention belongs to the technical field of concrete conveying, and particularly relates to a device for long-distance pumping of concrete. Background Art

[0002] A concrete mixing pump truck is a machine that uses a mixer to mix sand, cement, and water into concrete, and then uses the pumping pressure of a pumping mechanism to continuously transport the concrete along a pipeline to a designated position. It consists of a mixing device, a pumping device, a placing device, a support device, and a truck chassis. The mixing device, pumping device, placing device, and support device form an integral whole and are then equipped on the vehicle chassis. The vehicle chassis transmits the power of the engine to the oil pump of the hydraulic system or the rear axle through a transfer case. The oil pump can drive a hydraulic cylinder or a hydraulic motor and is the power source of the pumping device, placing device, and support device. The main movement of the mixing device is the rotation of the mixing drum. Currently, there are two ways to drive the rotation of the mixing drum of the mixing device: one is the hydraulic method, that is, adding a mixing hydraulic oil pump on the transfer case, and the oil pump drives the mixing motor; the other method is electric drive, that is, power is supplied to the motor by an external power source or an additional generator, and the motor drives the drum in the mixing main unit through a speed reducer.

[0003] Although the concrete mixing pump truck has the characteristic of convenient movement in practical applications, due to its limited boom length, it cannot meet the requirements of concrete pumping tasks for higher buildings or longer distances. Especially when performing underwater or high-rise concrete pouring, it is not convenient for the pump truck to enter the site or cannot reach the designated height. Based on this situation, especially during the construction of high-rise buildings, it is usually necessary to set up concrete pumping pipelines inside the building and lengthen the pumping pipes as the building rises.

[0004] However, as the concrete conveying pipeline extends, the concrete may segregate or dry out during the pumping process, and the concrete outlet pressure is often insufficient. This not only affects the quality of the concrete but also may cause pipe blockage.

[0005] Therefore, there is an urgent need for a device for long-distance pumping of concrete to solve this problem. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for long-distance pumping of concrete to solve the above problems.

[0007] To achieve the above purpose, the present invention provides the following solution:

[0008] A device for long-distance pumping of concrete includes a number of pumping and mixing mechanisms connected end to end. The pumping and mixing mechanism includes:

[0009] A housing, in which a retractable and expandable balloon is arranged, and a pressurizing chamber is arranged between the outer wall of the balloon and the inner wall of the housing;

[0010] A one-way feeding mechanism, which is located below the housing and the discharging end is communicated with the feeding end of the balloon, and the feeding end of the one-way feeding mechanism at the bottom is arranged to be communicated with the discharging end of a concrete pump truck;

[0011] A discharging mechanism, which is located above the housing and the feeding end is communicated with the discharging end of the balloon, and the discharging end of the discharging mechanism at the top is arranged to be communicated with the feeding end of a distributing machine;

[0012] A plurality of pumping and mixing mechanisms in the middle are arranged such that the discharging end of the discharging mechanism of the pumping and mixing mechanism below is communicated with the feeding end of the one-way feeding mechanism of the pumping and mixing mechanism above;

[0013] A stirring device, which is arranged in the balloon;

[0014] A pressure supplementing mechanism, which is communicated with the pressurizing chamber.

[0015] Optionally, the one-way feeding mechanism includes:

[0016] A feeding pipe, the discharging end of which is communicated with the feeding end of the balloon;

[0017] A check valve, the discharging end of which is communicated with the feeding end of the feeding pipe, and the feeding end of the check valve is communicated with the discharging end of a concrete pump truck or the discharging end of the corresponding discharging mechanism.

[0018] Optionally, the discharging mechanism includes:

[0019] A discharging pipe, the feeding end of which is communicated with the discharging end of the balloon; the discharging end of the discharging pipe is communicated with the feeding end of a distributing machine or the feeding end of the corresponding check valve.

[0020] Optionally, the stirring device includes:

[0021] A stirring shaft, which is rotatably arranged in the balloon;

[0022] A driving part, which is in transmission connection with the stirring shaft, and the driving part is located in the balloon;

[0023] A plurality of stirring rods, which are circumferentially and equally spacedly connected to the stirring shaft through a telescopic part.

[0024] Optionally, the driving part includes:

[0025] Two rotating brackets are respectively rotatably connected to both ends of the stirring shaft. A through hole for concrete to pass through is formed in the middle of the rotating bracket, and the rotating bracket is pivotally connected to the inner wall of the corresponding discharge pipe or the feed pipe;

[0026] An electromagnetic stator is pivotally connected to the center of the rotating bracket;

[0027] A permanent magnet rotor is embedded at the end of the stirring shaft, and the electromagnetic stator is in transmission connection with the permanent magnet rotor.

[0028] Optionally, the telescopic part includes:

[0029] Two symmetrically arranged telescopic rods. The movable end of the telescopic rod is fixed to the end of the corresponding stirring rod, and the fixed end of the telescopic rod is fixedly connected to the side wall of the stirring shaft.

[0030] Optionally, the pressure compensation mechanism includes:

[0031] An air pump, the air outlet end of which is communicated with the pressurizing chamber;

[0032] An electromagnetic exhaust valve, the air inlet end of which is communicated with the pressurizing chamber.

[0033] Optionally, a pressure gauge is arranged in communication between the air pump and the pressurizing chamber, and the pressure gauge is used to monitor the air pressure in the pressurizing chamber.

[0034] Optionally, a base for connecting to the floor slab is connected to the bottom of the housing.

[0035] Optionally, the electromagnetic stator includes a plurality of electromagnets arranged at equal intervals in the circumferential direction. The polarities of adjacent two electromagnets are opposite. The permanent magnet rotor includes a plurality of permanent magnets arranged at equal intervals in the circumferential direction. The polarities of adjacent two permanent magnets are opposite. The permanent magnet is magnetically connected to the corresponding electromagnet; the electromagnetic stator is electrically connected to a controller, and the controller drives the permanent magnet rotor composed of a plurality of permanent magnets to rotate by alternately switching the polarities of the electromagnets, and the number of permanent magnets matches the number of electromagnets.

[0036] Compared with the prior art, the present invention has the following advantages and technical effects:

[0037] During use, after the device is set up, the concrete is pumped into the balloon by a concrete pump truck. The balloon expands due to being filled with concrete. As the pumping pressure of the concrete pump truck decreases with the increase in height, at this time, by starting the pressure compensation device, the air pressure in the pressurization chamber is increased. The increase in air pressure can cause the balloon to contract. Under the action of the one-way feeding mechanism, the concrete cannot flow back. Therefore, the contraction of the balloon will extrude the concrete inside it towards the discharging mechanism. Through the above settings, the pumping pressure can be increased, the residence time of the concrete in the pipeline can be reduced, water evaporation can be avoided, and thus the situations of pipe blockage, concrete segregation, and hardening can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings:

[0039] Figure 1 It is a schematic structural diagram of the present invention;

[0040] Figure 2 It is a sectional view of the structure of the present invention;

[0041] Figure 3 It is a sectional view of the balloon structure of the present invention;

[0042] Figure 4 It is a structural diagram of the stirring device of the present invention;

[0043] Figure 5 It is a sectional view of the driving part of the stirring device of the present invention;

[0044] Figure 6 For the present invention Figure 5 Schematic diagram of the A-A sectional structure;

[0045] Figure 7 It is a schematic diagram of the internal structure of the present invention;

[0046] Figure 8 It is a schematic diagram of the internal structure of the check valve of the present invention;

[0047] Figure 9 It is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0048] Figure 10 For the present invention Figure 9 Enlarged view at B;

[0049] Figure 11 It is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0050] Among them, 1. housing; 2. discharge pipe; 4. check valve; 5. feed pipe; 6. balloon; 7. stirring device; 8. pressure gauge; 9. air pump; 10. electromagnetic exhaust valve; 11. telescopic bellows; 13. support frame; 14. support table; 15. vertical slide bar; 16. spring; 17. motor; 18. bidirectional threaded rod; 19. piston; 20. cylinder; 701. stirring shaft; 702. stirring rod; 703. telescopic rod; 704. rotating bracket; 705. electromagnetic stator; 706. permanent magnet rotor. Detailed implementation manners

[0051] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0052] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0053] Embodiment 1:

[0054] Refer to Figures 1 to 8 , the present invention discloses a device for long-distance pumping of concrete, including a plurality of pumping and mixing mechanisms connected end to end. The pumping and mixing mechanism includes:

[0055] A housing 1, in which a retractable and expandable balloon 6 is arranged, and a pressurizing chamber is arranged between the outer wall of the balloon 6 and the inner wall of the housing 1;

[0056] A unidirectional feeding mechanism, located below the housing 1 and with its discharge end communicating with the feeding end of the balloon 6, and the feeding end of the unidirectional feeding mechanism at the bottom is arranged to communicate with the discharge end of the concrete pump truck;

[0057] A discharging mechanism, located above the housing 1 and with its feeding end communicating with the discharge end of the balloon 6, and the discharge end of the discharging mechanism at the top is arranged to communicate with the feeding end of the distributing machine;

[0058] A plurality of pumping and mixing mechanisms in the middle are arranged such that the discharge end of the discharging mechanism of the pumping and mixing mechanism below communicates with the feeding end of the unidirectional feeding mechanism of the pumping and mixing mechanism above;

[0059] A stirring device 7, arranged inside the balloon 6;

[0060] A pressure compensating mechanism, arranged to communicate with the pressurizing chamber.

[0061] During use, after the device is set up, the concrete is pumped into the balloon 6 by a concrete pump truck. The balloon 6 expands due to being filled with concrete. As the pumping pressure of the concrete pump truck decreases with the increase in height, at this time, by starting the pressure compensation device, the air pressure in the pressurizing chamber is increased. The increase in air pressure can cause the balloon 6 to contract. Under the action of the one-way feeding mechanism, the concrete cannot flow back. Therefore, the contraction of the balloon 6 will extrude the concrete inside it towards the discharging mechanism. Through the above settings, the pumping pressure can be increased, the residence time of the concrete in the pipeline can be reduced, water evaporation can be avoided, and thus pipe blockage, concrete segregation, and hardening can be avoided.

[0062] The structure of the present invention is simple, small in size, convenient for upstairs installation, and easy to construct, having a broad application scenario.

[0063] As an alternative embodiment, the one-way feeding mechanism includes:

[0064] The feeding pipe 5, the discharging end of which is communicated with the feeding end of the balloon 6;

[0065] The check valve 4, the discharging end of which is communicatively arranged at the feeding end of the feeding pipe 5, and the feeding end of the check valve 4 is communicated with the discharging end of the concrete pump truck or the discharging end of the corresponding discharging mechanism.

[0066] As an alternative embodiment, the discharging mechanism includes:

[0067] The discharging pipe 2, the feeding end of which is communicated with the discharging end of the balloon 6; the discharging end of the discharging pipe 2 is communicated with the feeding end of the distributing machine or the feeding end of the corresponding check valve 4.

[0068] The check valve 4 is selected as a butterfly-wing type one-way valve. When the concrete enters, the check valve 4 opens, and when the concrete flows back, the check valve 4 closes, so that when the balloon 6 contracts, the concrete cannot flow back and can only move towards the discharging pipe 2, thereby realizing the movement of the pumped concrete to a distance.

[0069] As an alternative embodiment, the stirring device 7 includes:

[0070] The stirring shaft 701, which is rotatably arranged in the balloon 6;

[0071] The driving part, which is in transmission connection with the stirring shaft 701 and is located inside the balloon 6;

[0072] A plurality of stirring rods 702, which are circumferentially and equally spacedly connected to the stirring shaft 701 through the telescopic part.

[0073] As an alternative embodiment, the driving part includes:

[0074] Two rotating brackets 704 are respectively rotatably connected to both ends of the stirring shaft 701. A through hole for the concrete to pass through is formed in the middle of the rotating bracket 704, and the rotating bracket 704 is pivotally connected to the inner wall of the corresponding discharge pipe 2 or feed pipe 5.

[0075] An electromagnetic stator 705 is pivotally connected to the axis of the rotating bracket 704.

[0076] A permanent magnet rotor 706 is fixedly embedded at the end of the stirring shaft 701, and the electromagnetic stator 705 is drivingly connected to the permanent magnet rotor 706.

[0077] As an alternative embodiment, the telescopic part includes:

[0078] Two symmetrically arranged telescopic rods 703. The movable end of the telescopic rod 703 is fixed to the end of the corresponding stirring rod 702, and the fixed end of the telescopic rod 703 is fixedly connected to the side wall of the stirring shaft 701.

[0079] As an alternative embodiment, the electromagnetic stator 705 includes a plurality of electromagnets arranged at equal intervals in the circumferential direction. The polarities of adjacent two electromagnets are opposite. The permanent magnet rotor 706 includes a plurality of permanent magnets arranged at equal intervals in the circumferential direction. The polarities of adjacent two permanent magnets are opposite. The permanent magnets are magnetically connected to the corresponding electromagnets. The electromagnetic stator 705 is electrically connected to a controller. The controller drives the permanent magnet rotor 706 composed of a plurality of permanent magnets to rotate by alternately switching the polarities of the electromagnets. The number of permanent magnets matches the number of electromagnets.

[0080] To prevent the concrete from drying and segregating, the controller alternately switches the polarities of the electromagnets to drive the permanent magnet rotor 706 composed of a plurality of permanent magnets to rotate, driving a plurality of stirring rods 702 to stir the concrete in the balloon 6. The stirring rods 702 are arranged to be connected to the telescopic rods 703, and the positions of the stirring rods 702 can be changed according to the expansion and contraction of the balloon 6 to ensure the stirring area.

[0081] As an alternative embodiment, the pressure compensation mechanism includes:

[0082] An air pump 9, the air outlet end of which is communicated with the pressurizing chamber;

[0083] An electromagnetic exhaust valve 10, the air inlet end of which is communicated with the pressurizing chamber.

[0084] As an alternative embodiment, a pressure gauge 8 is arranged between the air pump 9 and the pressurizing chamber. The pressure gauge 8 is used to monitor the air pressure in the pressurizing chamber.

[0085] The air pump 9 is used to inflate the pressurizing chamber to drive the balloon 6 to contract. The air pressure gauge 8 can display the internal air pressure of the pressurizing chamber. By adjusting the pumping volume of the air pump 9, the adjustment of the pressurizing effect can be achieved. By controlling the opening and closing of the electromagnetic exhaust valve 10, the pressurizing chamber can be deflated, so that the balloon 6 is not squeezed by air pressure, and the concrete can enter the balloon 6 to make it expand.

[0086] As an alternative embodiment, a base for connecting to the floor slab is connected to the bottom of the housing 1.

[0087] Embodiment 2:

[0088] Reference Figures 9 to 10 In this embodiment, the difference from Embodiment 1 is that the top ends of a plurality of vertical sliding rods 15 are fixedly connected to the bottom of the housing 1. The plurality of vertical sliding rods 15 are vertically slidably arranged on the same support table 14. The bottom of the support table 14 is fixedly connected to a support frame 13. The support frame 13 is installed on the platform board. A spring 16 is sleeved outside the vertical sliding rod 15. The top end of the spring 16 is fixedly connected to the bottom of the support table 14, and the bottom end of the spring 16 is fixedly connected to the bottom end of the vertical sliding rod 15;

[0089] The discharge end of the lower discharge pipe 2 is communicated with the feed end of the check valve 4 located above through a telescopic bellows 11.

[0090] Through the above settings, when the concrete content in the balloon 6 increases, under the action of gravity, the housing 1 sinks, the plurality of vertical sliding rods 15 slide downward, and the spring 16 is stretched. At this time, the telescopic bellows 11 is elongated, and the vibration generated during the increase of the concrete content in the balloon 6 is consumed by the spring 16.

[0091] Embodiment 3:

[0092] Reference Figure 11 In this embodiment, the difference from Embodiment 1 is that the top of a cylinder 20 is communicated with one side of the pressurizing chamber. A piston 19 is vertically slidably arranged in the cylinder 20. A sealing ring is arranged between the outer wall of the piston 19 and the inner wall of the cylinder 20. The piston 19 is threadedly connected to a bidirectional threaded rod 18. The bidirectional threaded rod 18 is rotatably arranged in the cylinder 20. The top end of the bidirectional threaded rod 18 is axially connected to the output shaft of a motor 17. The fixed end of the motor 17 is fixedly connected to the outer wall of the cylinder 20.

[0093] With the above settings, when the pressure in the supercharging chamber is kept constant by the pressure compensation mechanism, the bidirectional threaded rod 18 is rotated by the motor 17, and the bidirectional threaded rod 18 drives the piston 19 to reciprocate in the cylinder 20. When the piston 19 descends, the gas in the supercharging chamber moves into the cylinder 20. To balance the air pressure, the balloon 6 expands and the concrete enters the balloon 6. When the piston 19 ascends, the gas in the cylinder 20 moves into the supercharging chamber. At this time, the balloon 6 contracts, playing a role in pressurizing the concrete. Since the unidirectional feeding mechanism can prevent the concrete from flowing back, after pressurization, the concrete is extruded by the discharging mechanism. The reciprocating expansion and contraction of the balloon 6 play a role in pumping the concrete.

[0094] The concrete referred to in this article is all pumped concrete. Among them, pumped concrete refers to the concrete mixture that has been stirred well and is transported and poured along the pipeline by a concrete pump.

[0095] In traditional technology, the concrete pump relies on the pressure of the oil cylinder to continuously transport the concrete through the pipeline. The concrete pump and the conveying pipeline form a pumping system. The concrete is poured into the hopper of the pump truck through a mixer truck or self-mixing. There are two conveying cylinders on the rear wall of the hopper, each with a piston inside, which are driven by the oil cylinder at the rear end to alternately reciprocate. When the piston retreats, the concrete is sucked into the cylinder; when it is pushed forward, the piston pushes the concrete into the S-shaped distribution valve in the middle of the two cylinder ports. It is controlled by a hydraulic swing valve oil cylinder and electrical control, and swings left and right in sequence, constantly connecting to the left or right cylinder port. When the S pipe is connected to the cylinder port, the concrete in this cylinder is just pushed out by the oil cylinder, pushed into the s valve, enters the pipeline, and is then transported to the pouring point at the construction site.

[0096] Pumped concrete is widely used in multiple construction fields due to its high efficiency and economy, including:

[0097] Building construction: Pumped concrete is suitable for the construction of high-rise buildings, mainly used for the transportation and pouring of concrete. In the construction of high-rise buildings, it is necessary to transport pumped concrete to the floors under high pressure, while the traditional concrete transportation method will be very difficult and dangerous.

[0098] Bridge construction: Pumped concrete can meet the construction requirements of large bridge projects such as large single-tower cable-stayed bridges.

[0099] Water conservancy construction: Pumped concrete is suitable for the construction of water conservancy projects, such as sluices, dams, large water treatment facilities, pump houses, and canal systems. Pumped concrete can transport the concrete to dangerous areas, such as underwater, steep slopes, rapids, and landslides, improving the construction efficiency.

[0100] Tunnel construction: During the construction of tunnels, the traditional concrete transportation method has become a bottleneck, while the use of a concrete pumping station can greatly expand the construction scope and improve the construction efficiency.

[0101] The use of pumped concrete has the following advantages and characteristics:

[0102] Improve construction performance: Pumped concrete can improve the construction performance of concrete, making it more adaptable to various complex construction environments.

[0103] Improve the quality of concrete: Through the pumping method, the uniformity and stability of concrete during transportation can be ensured, thus improving the quality of concrete.

[0104] Reduce project costs: Pumped concrete can reduce the input of manpower and material resources, reducing project costs.

[0105] Improve production efficiency: Pumped concrete can significantly shorten the construction period and improve production efficiency.

[0106] Protect the construction environment: Pumped concrete can reduce dust and noise pollution at the construction site, which is conducive to protecting the construction environment.

[0107] Suitable for narrow sites: Pumped concrete can be transported through pipelines and is suitable for narrow construction sites.

[0108] Technical requirements and precautions for pumped concrete:

[0109] Coarse aggregate requirements: The gradation, particle size and particle shape of coarse aggregate have a great influence on the pumpability of concrete mixture. The ratio of the maximum particle size of coarse aggregate to the conveying pipe diameter should be adjusted according to the pumping height.

[0110] Cement dosage: The cement mortar in pumped concrete plays a role in lubrication and pressure transmission in the conveying pipeline. Appropriate cement dosage plays an important role in the pumpability of concrete. Generally, the minimum cement dosage for pumped concrete is specified as 300 kg / m 3 .

[0111] Pumping techniques: During the pumping process, attention should be paid to the control of parameters such as pumping speed and pressure, as well as techniques such as lubrication and blockage treatment of concrete.

[0112] In summary, pumped concrete is an efficient, economical and environmentally friendly concrete construction technology with broad application prospects and development potential. With the increasing application of pumped concrete, the development and research of adding a mixing device in the middle of pumped concrete also have great commercial prospects.

[0113] The concrete pump truck referred to in this article is a device modified on the basis of a truck chassis, which integrates a motion and power transmission device, a pumping and mixing device, a placing device and some other auxiliary devices. The following are the main structural components of the concrete pump truck:

[0114] I. Chassis

[0115] Composition: The chassis mainly consists of an automotive chassis, a power take-off (PTO), a drive shaft, etc.

[0116] Function: The chassis provides power for the movement and operation of the pump truck. By means of a pneumatic device to push the shift fork in the power take-off, the shift fork drives the clutch sleeve, and the power of the automotive engine can be switched via the power take-off. When switched to the rear axle of the vehicle, the pump truck can move; when switched to the hydraulic pump, the transportation and placing of concrete can be completed.

[0117] II. Boom System

[0118] Composition: The boom system consists of multiple boom sections, connecting rods, hydraulic cylinders, and connecting parts, etc., and is connected by hinge shafts to form a foldable and deployable planar four-bar linkage mechanism.

[0119] Function: The boom system is responsible for carrying and positioning the pumping device. By deploying and retracting each boom section, concrete can be transported to a certain height and distance. The boom can rotate 365° around a fixed turret, and each boom section can also rotate around its own axis.

[0120] III. Turret

[0121] Composition: The turret mainly consists of a turntable, a slewing mechanism, a fixed turret (connecting frame), and a support structure, etc.

[0122] Function: The turret is installed in the middle of the automotive chassis, providing a stable base for the boom. During pumping, the chassis tires are lifted off the ground, the chassis and the pumping system are hung on the turret, and the load of the entire pump truck is transmitted to the ground by the four legs of the turret.

[0123] IV. Pumping System

[0124] Composition: The pumping system consists of a pumping mechanism, a hopper, an S-valve assembly, a swinging mechanism, a mixing mechanism, a piping assembly, and a boom piping, etc.

[0125] Function: The pumping system is the core part of the concrete pump truck, responsible for transporting concrete from the mixing device to the placing device. After the concrete mixer truck unloads the concrete into the hopper of the pump truck, it is pressured by the pumping system into the delivery pipe and then discharged through the end hose.

[0126] V. Hydraulic System

[0127] Composition: The hydraulic system is mainly divided into two major parts: the pumping hydraulic system and the boom hydraulic system, including components such as hydraulic pumps, valve groups, accumulators, hydraulic motors, etc.

[0128] Function: The hydraulic system provides power for the pump truck, and drives the concrete pump to work by means of a hydraulic pump to push the piston. The boom hydraulic system is also responsible for controlling the deployment and retraction of the boom.

[0129] VI. Electrical System

[0130] Composition: The electrical system mainly consists of a control cabinet, a remote controller, and other electrical components, etc.

[0131] Function: The electrical system is responsible for controlling various functions of the concrete pump truck, including power transmission, pumping speed, placing height, and the movement of the boom, etc.

[0132] In summary, the concrete pump truck is a mechanical device integrating multiple complex systems. Each part cooperates and works coordinately to jointly complete the concrete pumping task. Due to the complex structure and large volume of the concrete pump truck, it is not convenient to enter narrow construction areas, and its boom length is limited, making it difficult to achieve concrete pouring on higher floors. Moreover, since the boom can be regarded as a relatively long rod and there is no installation position for the concrete secondary increasing device, the concrete pump truck usually can only achieve one-time pressurization. Therefore, developing a device suitable for high-rise and long-distance concrete pumping has great commercial prospects.

[0133] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0134] The embodiments described above are only for describing the preferred mode of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A device for long-distance concrete pumping, characterized in that: It comprises a plurality of pumping and mixing mechanisms connected end to end, and the pumping and mixing mechanisms include: A shell (1), wherein a contractible and expandable balloon (6) is arranged inside the shell (1), and a pressurization chamber is arranged between the outer wall of the balloon (6) and the inner wall of the shell (1); A one-way feeding mechanism, located below the housing (1) and having a discharge end connected to a feed end of the balloon (6), wherein the feed end of the one-way feeding mechanism located at the bottom is arranged to be connected to a discharge end of a concrete pump truck; A discharge mechanism, located above the housing (1) and having a feed end connected to a discharge end of the balloon (6), wherein the discharge end of the discharge mechanism located at the top is arranged to be connected to a feed end of a material distributing machine; The plurality of pumping and mixing mechanisms located in the middle are arranged so that the discharge end of the discharge mechanism of the pumping and mixing mechanism located below is connected to the feed end of the one-way feed mechanism of the pumping and mixing mechanism located above; A stirring device (7) is arranged inside the balloon (6); The pressure replenishing mechanism is connected to the pressure boosting chamber.

2. A device for long-distance concrete pumping according to claim 1, characterized in that: The one-way feeding mechanism comprises: A feeding pipe (5), the discharge end of which is connected to the feeding end of the balloon (6); A check valve (4) is provided with a discharge end in communication with the feed end of the feed pipe (5); the feed end of the check valve (4) is in communication with the discharge end of the concrete pump truck or the discharge end of the corresponding discharge mechanism.

3. The device for long-distance concrete pumping according to claim 2, characterized in that: The discharging mechanism comprises: A discharge pipe (2), the feed end of which is in communication with the discharge end of the balloon (6); the discharge end of the discharge pipe (2) is in communication with the feed end of the material distribution machine or the corresponding feed end of the check valve (4).

4. The device for long-distance concrete pumping according to claim 3, characterized in that: The stirring device (7) comprises: A stirring shaft (701) is rotatably disposed in the balloon (6); A driving unit, which is in driving connection with the stirring shaft (701), and the driving unit is located inside the balloon (6); A plurality of stirring rods (702) are connected to the stirring shaft (701) at equal intervals in the circumferential direction through telescopic parts.

5. The device for long-distance concrete pumping according to claim 4, characterized in that: The driving unit comprises: Two rotating brackets (704) are respectively rotatably connected to the two ends of the stirring shaft (701); a through hole for concrete to pass through is opened in the middle of the rotating bracket (704); the rotating bracket (704) is axially connected to the inner wall of the corresponding discharge pipe (2) or the feed pipe (5); An electromagnetic stator (705) is axially connected to the axis of the rotating bracket (704); The permanent magnet rotor (706) is embedded in the end of the stirring shaft (701), and the electromagnetic stator (705) is drivingly connected to the permanent magnet rotor (706).

6. The device for long-distance concrete pumping according to claim 4, characterized in that: The telescopic portion comprises: Two symmetrically arranged telescopic rods (703), the movable ends of the telescopic rods (703) are fixed to the corresponding ends of the stirring rods (702), and the fixed ends of the telescopic rods (703) are fixedly connected to the side walls of the stirring shaft (701).

7. The device for long-distance concrete pumping according to claim 1, characterized in that: The pressure replenishing mechanism comprises: An air pump (9), the air outlet of which is connected to the pressurizing chamber; An electromagnetic exhaust valve (10) has an air inlet end connected to the pressurizing chamber.

8. The device for long-distance concrete pumping according to claim 7, characterized in that: A pressure gauge (8) is provided between the air pump (9) and the pressurizing chamber, and the pressure gauge (8) is used to monitor the air pressure in the pressurizing chamber.

9. The device for long-distance concrete pumping according to claim 1, characterized in that: The bottom of the shell (1) is connected to a base for connecting to a floor.

10. The device for long-distance concrete pumping according to claim 5, characterized in that: The electromagnetic stator (705) comprises a plurality of electromagnets arranged at equal intervals in the circumferential direction, and the polarities of two adjacent electromagnets are opposite. The permanent magnet rotor (706) comprises a plurality of permanent magnets arranged at equal intervals in the circumferential direction, and the polarities of two adjacent permanent magnets are opposite. The permanent magnets are magnetically connected to the corresponding electromagnets. The electromagnetic stator (705) is electrically connected to a controller, and the controller drives the permanent magnet rotor (706) composed of the plurality of permanent magnets to rotate by alternately switching the polarities of the electromagnets, and the number of the permanent magnets matches the number of the electromagnets.

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