CN221033091U - Concrete pumping mechanism and concrete conveying equipment - Google Patents

Abstract

The concrete pumping mechanism comprises a power transmission device and a material conveying device connected with the power transmission device, wherein the material conveying device comprises a first material conveying cylinder, a second material conveying cylinder and a swinging piston assembly, pistons are arranged at two ends of the swinging piston assembly, the first material conveying cylinder and the second material conveying cylinder are respectively sleeved on the pistons at two ends of the swinging piston assembly, the swinging piston assembly can swing back and forth relative to the first material conveying cylinder and the second material conveying cylinder, and the swinging piston assembly is also connected to the power transmission device; the power transmission device is used for receiving the power output by the power source driving device, and the swinging piston assembly converts the rotary motion of the power transmission device into reciprocating swinging linear motion so as to enable the material conveying device to suck and pump concrete. The utility model also provides concrete conveying equipment with the concrete pumping mechanism.

Description

Concrete pumping mechanism and concrete conveying equipment

Technical Field

The utility model relates to the technical field of concrete pumping and conveying, in particular to a concrete pumping mechanism and concrete conveying equipment with the same.

Background

The pumping system is the most core component in the concrete conveying equipment, and the conveying of high-rise buildings and ultra-long-distance concrete is completed by the pumping system. With the improvement of the requirements of construction parties on engineering quality, progress and the like, the performance requirements on a pumping system are gradually improved.

Innovations in the prior art for concrete pumping systems, such as increasing the power of the whole machine, improving the pumping pressure, lengthening the movement stroke of a piston, improving the sealing effect and the like, are performed so as to obtain a pumping system with large discharge capacity, high pressure, high material absorption rate and small impact. Pumping systems have evolved greatly in several ways:

1. large displacement pumping technology: the large-caliber and long-stroke conveying cylinder is adopted, and the high-low pressure automatic switching technology and the main reversing loop are integrated to create a large-displacement pumping hydraulic loop;

2. ultra-high pressure pumping technology: developing an ultra-high pressure concrete pump, and improving the outlet pressure of the pump to be up to 50MPA, wherein the conveying height can be up to more than 1000 meters;

3. Dispensing valve technology: the distributing valve has good suction and discharge performance, sealing performance, wear resistance and flexible and reliable reversing;

4. high-low voltage switching technology: the pumping process does not need to be stopped, the pipe is not required to be disassembled, no leakage exists, the pumping process is switched at will, and the time and the hydraulic oil are saved;

5. The automatic concrete piston withdrawing technology comprises the following steps: the hydraulic system is utilized to directly withdraw the concrete piston into the water tank of the pumping mechanism, so that the concrete piston is convenient to detach and install, the abrasion and lubrication conditions of the concrete piston can be checked at any time, and the service life is prolonged;

6. Intelligent buffer line changing technology: the high-sensitivity sensor is used for collecting signals, the computer is used for fitting the concrete conveying condition, and the controller is used for rapidly adjusting the movement direction and speed of the pumping oil cylinder, so that the concrete flows in the conveying pipeline to the greatest extent and approaches the ideal condition.

In summary, the development of various technologies of the current pumping system is based on the development of a hydraulic pumping system, and the following disadvantages exist:

1. The pumping is carried out by driving the hydraulic pump by the engine and then driving the hydraulic cylinder to carry out pumping, chemical energy is converted into hydraulic energy in the process, the hydraulic energy is converted into mechanical energy again by the hydraulic system, part of the energy is dissipated along with the heating of the hydraulic system, the energy utilization rate is low, and the overall energy efficiency is low;

2. The hydraulic pumping system is difficult to oil seal, and oil leakage and pollution are easy to cause;

3. The pumping capacity of the pumping system is mainly determined by the overall power and outlet pressure, and as the pumping capacity demand increases, the power demand on the engine increases, resulting in an increased engine size and increased energy consumption, and the performance of the power source is related to the overall performance of the pump. And the enlarged engine size deteriorates the layout space and weight of the whole vehicle.

Disclosure of utility model

The utility model aims to provide a concrete pumping mechanism which can adapt to various power sources, provides a solution for electric drive, saves energy and simultaneously avoids the problems of oil leakage, pollution and the like of an original hydraulic system; and the increase of pumping required power, the spatial arrangement of the whole vehicle, the light weight and the improvement of system reliability can be facilitated.

The utility model provides a concrete pumping mechanism, which comprises a power transmission device and a material conveying device connected with the power transmission device, wherein the material conveying device comprises a first material conveying cylinder, a second material conveying cylinder and a swinging piston assembly, two ends of the swinging piston assembly are respectively provided with a piston, the first material conveying cylinder and the second material conveying cylinder are respectively sleeved on the pistons at two ends of the swinging piston assembly, the swinging piston assembly can swing back and forth relative to the first material conveying cylinder and the second material conveying cylinder, and the swinging piston assembly is also connected to the power transmission device; the power transmission device is used for receiving the power output by the power source driving device, and the swinging piston assembly converts the rotary motion of the power transmission device into reciprocating swinging linear motion so as to enable the material conveying device to suck and pump concrete.

Further, the power transmission device comprises a driving disc, and a rotating shaft and a protruding shaft which are respectively arranged on the driving disc, wherein the rotating shaft is used for being connected with the power source driving device, and the driving disc can rotate around the rotating shaft; the swing piston assembly is provided with a guide groove, and the protruding shaft is inserted into the guide groove and can move back and forth along the guide groove.

Further, the rotating shaft and the protruding shaft are respectively arranged at two sides of the driving disc, which are away from each other.

Further, the guide groove extends linearly, and the extending direction of the guide groove is crossed with the length extending direction of the swing piston assembly.

Further, the position of the protruding shaft is deviated from the axis of the rotating shaft.

Further, a first switch valve and a second switch valve are arranged on the first material conveying cylinder, and the first material conveying cylinder is opened and closed asynchronously through the first switch valve and the second switch valve so as to realize suction and pumping of concrete; the second material conveying cylinder is provided with a third switch valve and a fourth switch valve, and the second material conveying cylinder is opened and closed asynchronously through the third switch valve and the fourth switch valve so as to realize suction and pumping of concrete.

Further, when the swing piston assembly moves towards the first material conveying cylinder, the second switching valve is opened, the first switching valve is closed, and the first material conveying cylinder pumps concrete; simultaneously, the third switch valve is opened, the fourth switch valve is closed, and the second material conveying cylinder sucks concrete; when the swing piston assembly moves towards the second material conveying cylinder, the fourth switching valve is opened, the third switching valve is closed, and the second material conveying cylinder pumps concrete; simultaneously, the first switch valve is opened, the second switch valve is closed, and the first material conveying cylinder sucks concrete.

Further, the first switch valve and the second switch valve are arranged at the end part of the first material conveying cylinder far away from the second material conveying cylinder and are respectively positioned at two radial sides of the first material conveying cylinder; the third switch valve and the fourth switch valve are arranged at the end part of the second material conveying cylinder far away from the first material conveying cylinder and are respectively positioned at two radial sides of the second material conveying cylinder.

The utility model also provides concrete conveying equipment, which comprises the concrete pumping mechanism.

Further, the concrete pumping mechanism further comprises a power source driving device connected with the concrete pumping mechanism, and the power source driving device is a motor.

According to the concrete pumping mechanism provided by the utility model, the power transmission device receives the power output by the power source driving device and is matched with the swing piston assembly to convert the rotary motion of the power transmission device into the reciprocating swing linear motion of the swing piston assembly, so that the hydraulic cylinder of the hydraulic pumping system is replaced, the power source of the power source driving device is not limited, a solution is provided for electric driving, and a motor direct driving scheme is adopted for replacing the original hydraulic driving for stirring and distribution. Meanwhile, the mechanical transmission improves the energy transmission efficiency of the original hydraulic transmission, so that the problems of oil leakage, pollution and the like of the original hydraulic system are avoided while energy conservation is brought. And the motor is adopted to replace the original engine as a power source, so that the increase of pumping required power, the spatial arrangement of the whole vehicle, the light weight and the improvement of the system reliability are facilitated.

The foregoing description is only an overview of the technical solution of the present utility model, and may be implemented according to the content of the specification in order to make the technical means of the present utility model more clearly understood, and in order to make other objects, features and advantages of the present utility model more readily understood, the following detailed description of the preferred embodiments will be given with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a concrete pumping mechanism according to a preferred embodiment of the present utility model.

Fig. 2 is another structural schematic diagram of a concrete pumping mechanism according to a preferred embodiment of the present utility model.

Detailed Description

In order to further describe the technical means and effects adopted by the utility model to achieve the preset aim, the following detailed description is given in terms of specific implementation, structure, characteristics and effects according to the utility model with reference to the accompanying drawings and preferred embodiments:

The foregoing and other features, aspects, and advantages of the present utility model will become more apparent from the following detailed description of the preferred embodiments, which proceeds with reference to the accompanying drawings. While the utility model may be susceptible to further details of embodiment and specific details of construction and operation for achieving the desired purpose, there is shown in the drawings a form a further embodiment which may be used herein with the understanding that the present utility model is limited to the specific embodiments and the drawings are incorporated in their entirety.

As shown in fig. 1 and 2, the concrete pumping mechanism of the preferred embodiment of the present utility model comprises a power transmission device 10 and a material conveying device 20 connected with the power transmission device 10, wherein the material conveying device 20 comprises a first material conveying cylinder 21, a second material conveying cylinder 22 and a swinging piston assembly 24, two ends of the swinging piston assembly 24 are respectively provided with a piston 241, the first material conveying cylinder 21 and the second material conveying cylinder 22 are respectively sleeved on the pistons 241 at two ends of the swinging piston assembly 24, and the swinging piston assembly 24 can reciprocate relative to the first material conveying cylinder 21 and the second material conveying cylinder 22. The swing piston assembly 24 is also connected to the power transmission device 10. The power transmission device 10 is used for receiving power output by the power source driving device, the swinging piston assembly 24 is used for converting rotary motion of the power transmission device 10 into reciprocating swinging linear motion, and the material conveying device 20 is used for sucking and pumping concrete.

The concrete pumping mechanism receives the power output by the power source driving device through the power transmission device 10 and is matched with the swinging piston assembly 24 to convert the rotary motion of the power transmission device 10 into the reciprocating swinging linear motion of the swinging piston assembly 24, so that the hydraulic cylinder of the hydraulic pumping system is replaced, the power source of the power source driving device is not limited (such as a battery, a hydrogen fuel cell or other new energy for storing energy), a solution is provided for electric driving, and a motor direct driving scheme is adopted for stirring and distribution to replace the original hydraulic driving. Meanwhile, compared with the hydraulic transmission in the prior art, the mechanical transmission improves the energy transmission efficiency, saves energy, and simultaneously can avoid the problems of oil leakage, pollution and the like of the hydraulic pumping system in the prior art. And moreover, the motor is adopted to replace the original engine as a power source, so that the increase of pumping required power, the spatial arrangement of the whole vehicle, the light weight and the improvement of the system reliability are facilitated.

Specifically, the power transmission device 10 includes a drive disk 11, and a rotary shaft 12 and a male shaft 13 provided on the drive disk 11, respectively, the rotary shaft 12 being for connection with a power source drive device; the driving disc 11 can rotate around the rotating shaft 12, a guide groove 242 is arranged on the swinging piston assembly 24, and the protruding shaft 13 is inserted into the guide groove 242 and can move back and forth along the guide groove 242.

The driving disk 11 is substantially cake-shaped, and the rotary shaft 12 and the protruding shaft 13 are respectively disposed at two sides of the driving disk 11 facing away from each other. The wobble piston assembly 24 is arranged on the same side of the drive disc 11 as the spindle 13.

The swing piston assembly 24 has opposite ends, two pistons 241 are respectively provided at both ends of the piston rod 24, and a guide groove 242 is provided at a middle portion of the swing piston assembly 24.

Further, the guide groove 242 extends in a straight line, and the extending direction of the guide groove 242 is disposed to intersect with the longitudinal extending direction of the swing piston assembly 24.

Further, the position of the protruding shaft 13 is deviated from the axis of the rotating shaft 12, and when the rotating shaft 12 drives the driving disc 11 to rotate, the protruding shaft 13 rotates circumferentially around the axis of the rotating shaft 12. The rotating shaft 12 is used for being connected with a power source driving device, the rotating shaft 12 receives power output by the power source driving device to drive the driving disc 11 to rotate, and the protruding shaft 13 rotates along with the driving disc 11 and moves along the guide groove 242 to drive the swinging piston assembly 24 to do reciprocating swinging linear motion. The first material conveying cylinder 21/the second material conveying cylinder 22 are fixed on the concrete conveying equipment, and the suction and pumping of concrete can be realized by the reciprocating motion of the piston 241 and the cooperation of the first material conveying cylinder 21/the second material conveying cylinder 22.

The configuration of the power transmission device 10 and the swing piston assembly 24 is not limited to the configuration shown in fig. 1, but in other embodiments, any mechanical configuration that can convert the rotational motion of the power transmission device 10 into the reciprocating, swinging, linear motion of the swing piston assembly 24 may be used.

Further, the first feeding cylinder 21 is provided with a first switch valve 211 and a second switch valve 212, and the first feeding cylinder 21 is opened and closed asynchronously (i.e. one is opened and the other is closed) by the first switch valve 211 and the second switch valve 212 so as to realize suction and pumping of concrete. The second material conveying cylinder 22 is provided with a third switch valve 221 and a fourth switch valve 222; the second delivery cylinder 22 is opened and closed asynchronously (i.e., one is closed while the other is opened) by the third and fourth switching valves 221 and 222 to achieve suction and pumping of concrete. For example, when the swing piston assembly 24 moves toward the first delivery cylinder 21, the second on-off valve 212 is opened, the first on-off valve 211 is closed, and the first delivery cylinder 21 pumps concrete; at the same time, the third on-off valve 221 is opened and the fourth on-off valve 222 is closed, and the second delivery cylinder 22 is sucking in concrete (fig. 1 shows a schematic view of the swing piston assembly 24 moving to the right to the extreme position). When the swing piston assembly 24 moves towards the second feeding cylinder 22, the fourth switching valve 222 is opened, the third switching valve 221 is closed, and the second feeding cylinder 22 pumps concrete; meanwhile, the first switching valve 211 is opened, the second switching valve 212 is closed, and the first delivery cylinder 21 sucks in concrete (fig. 2 shows a schematic view in which the swing piston assembly 24 moves left to the limit position). Concrete is pumped out alternately through the first material conveying cylinder 21 and the second material conveying cylinder 22, so that the concrete pumping mechanism can continuously output concrete. Preferably, the first switching valve 211, the second switching valve 212, the three switching valve 221 and the fourth switching valve 222 are all check valves.

Further, a first on-off valve 211 and a second on-off valve 212 are provided at the end of the first feed cylinder 21 remote from the second feed cylinder 22 and on both sides in the radial direction of the first feed cylinder 21, respectively. The third switching valve 221 and the fourth switching valve 222 are provided at the end of the second cylinder 22 remote from the first cylinder 21 and are located on both sides of the second cylinder 22 in the radial direction, respectively.

Further, the feeding device 20 is further provided with a guiding mechanism (not shown) for coaxially arranging the oscillating piston assembly 24 with the feeding cylinder 22 and moving the oscillating piston assembly 24 on the axis. The guide mechanism may be designed according to the structure of the feeding device 20, and is not limited herein.

The beneficial effects of the utility model are as follows: the concrete pumping mechanism is an improvement on the existing hydraulic pumping system, a hydraulic driving system is canceled on the basis of the hydraulic pumping system, and the hydraulic cylinder is replaced by the mechanical structure design capable of converting rotary motion into reciprocating swing linear motion, so that feasibility is provided for electric driving. Meanwhile, the mechanical transmission improves the energy transmission efficiency of the original hydraulic transmission, so that the problems of oil leakage, pollution and the like of a hydraulic pumping system in the prior art can be avoided while energy conservation is brought. And moreover, the motor is adopted to replace the original engine as a power source, so that the increase of pumping required power, the spatial arrangement of the whole vehicle, the light weight and the improvement of the system reliability are facilitated.

In another embodiment of the present utility model, the rotary motion may be converted into the reciprocating oscillating linear motion by the cooperation of a gear and a rack, the rack structure is transversely disposed on the oscillating piston assembly 24, and the gear engaged with the rack is connected to a motor capable of rotating in opposite directions, for example, to realize the reciprocating oscillating linear motion of the oscillating piston assembly 24. Similarly, other mechanical designs that achieve equivalent functionality are within the scope of the inventive concepts of the present utility model.

The utility model also provides concrete conveying equipment, which comprises the concrete pumping mechanism.

The concrete delivery apparatus further includes a power source drive device, preferably an electric motor, coupled to the concrete pumping mechanism.

The foregoing has outlined rather broadly the more detailed description of the utility model in order that the detailed description of the principles and embodiments of the utility model may be implemented in conjunction with the detailed description of the utility model that follows, the examples being merely intended to facilitate an understanding of the method of the utility model and its core concepts; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.

Claims (10)

1. The concrete pumping mechanism is characterized by comprising a power transmission device (10) and a material conveying device (20) connected with the power transmission device (10), wherein the material conveying device (20) comprises a first material conveying cylinder (21), a second material conveying cylinder (22) and a swinging piston assembly (24), pistons (241) are arranged at two ends of the swinging piston assembly (24), the first material conveying cylinder (21) and the second material conveying cylinder (22) are respectively sleeved on the pistons (241) at two ends of the swinging piston assembly (24), the swinging piston assembly (24) can swing back and forth relative to the first material conveying cylinder (21) and the second material conveying cylinder (22), and the swinging piston assembly (24) is also connected to the power transmission device (10); the power transmission device (10) is used for receiving power output by the power source driving device, the swinging piston assembly (24) is used for converting rotary motion of the power transmission device (10) into reciprocating swinging linear motion so as to enable the material conveying device (20) to suck and pump concrete.

2. The concrete pumping mechanism according to claim 1, wherein the power transmission device (10) comprises a driving disc (11) and a rotating shaft (12) and a protruding shaft (13) which are respectively arranged on the driving disc (11), the rotating shaft (12) is used for being connected with the power source driving device, and the driving disc (11) can rotate around the rotating shaft (12); the swing piston assembly (24) is provided with a guide groove (242), and the protruding shaft (13) is inserted into the guide groove (242) and can move back and forth along the guide groove (242).

3. The concrete pumping mechanism according to claim 2, wherein the rotating shaft (12) and the protruding shaft (13) are respectively arranged at two sides of the driving disc (11) facing away from each other.

4. The concrete pumping mechanism according to claim 2, wherein the guide groove (242) extends in a straight line, and the extending direction of the guide groove (242) is disposed to intersect with the length extending direction of the swing piston assembly (24).

5. The concrete pumping mechanism according to claim 2, characterized in that the position of the protruding shaft (13) is offset from the axis of the rotating shaft (12).

6. The concrete pumping mechanism according to any one of claims 1 to 5, wherein a first switch valve (211) and a second switch valve (212) are arranged on the first material conveying cylinder (21), and the first material conveying cylinder (21) is opened and closed asynchronously through the first switch valve (211) and the second switch valve (212) so as to realize suction and pumping of concrete; the second material conveying cylinder (22) is provided with a third switch valve (221) and a fourth switch valve (222), and the second material conveying cylinder (22) is opened and closed asynchronously through the third switch valve (221) and the fourth switch valve (222) so as to realize suction and pumping of concrete.

7. The concrete pumping mechanism of claim 6, wherein the second on-off valve (212) is opened and the first on-off valve (211) is closed when the swing piston assembly (24) moves toward the first delivery cylinder (21), the first delivery cylinder (21) pumping concrete; simultaneously, the third switch valve (221) is opened, the fourth switch valve (222) is closed, and the second material conveying cylinder (22) sucks concrete;

When the swing piston assembly (24) moves towards the second material conveying cylinder (22), the fourth switch valve (222) is opened, the third switch valve (221) is closed, and the second material conveying cylinder (22) pumps concrete; at the same time, the first switch valve (211) is opened, the second switch valve (212) is closed, and the first material conveying cylinder (21) sucks concrete.

8. The concrete pumping mechanism according to claim 6, wherein the first switch valve (211) and the second switch valve (212) are disposed at ends of the first material delivery cylinder (21) away from the second material delivery cylinder (22) and are located at both sides of the first material delivery cylinder (21) in the radial direction, respectively; the third switch valve (221) and the fourth switch valve (222) are arranged at the end part of the second material conveying cylinder (22) far away from the first material conveying cylinder (21) and are respectively positioned at two radial sides of the second material conveying cylinder (22).

9. A concrete delivery apparatus comprising the concrete pumping mechanism of any one of claims 1 to 8.

10. The concrete delivery apparatus of claim 9, further comprising a power source drive connected to the concrete pumping mechanism, the power source drive being a motor.