Concrete pumping device and precast pile manufacturing equipment
By designing a concrete pumping device including pumping components and control components, and using displacement sensors and pressure sensors to calculate the pumping volume of concrete, the problem of inaccurate pumping in traditional devices is solved, and high-precision concrete pumping is achieved.
Patent Information
- Application Number
- CN202422028080.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-20
AI Technical Summary
During the transportation of a traditional concrete pumping device, it is difficult to accurately measure the volume of concrete pumped each time during the long pump pipe, resulting in the inability to accurately weigh the weighing instrument.
A pumping device including a pumping assembly and a control assembly is designed. The pumping assembly consists of a first cylinder, a second cylinder and a piston rod. The displacement and pressure signals of the piston rod are detected through a displacement sensor and a controller to calculate the pumping amount of concrete.
The accurate calculation of the concrete pumping volume is achieved, and the unpredictable and irregular pressure problems generated by long pump pipes in traditional devices on pipe pile molds is overcome, and the pumping accuracy is improved.
Smart Images
Figure CN222879819U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of concrete pumping, and in particular to a concrete pumping device and precast pile manufacturing equipment. Background Art
[0002] In the process of making precast piles, concrete is usually pumped into the pipe pile mold through a concrete pumping device. In the traditional concrete pumping device, a weighing instrument is usually used to weigh the concrete pumped each time, so that the concrete can be evenly distributed in the pipe pile mold according to the preset weight of each position. However, since the pipe pile mold is long, a long pump pipe is required for concrete transportation during pumping. The long pump pipe that penetrates into the pipe pile mold will generate pressure on the pipe pile mold, and the pressure generated at each position is unpredictable and irregular. In this way, the weighing instrument cannot accurately weigh the concrete pumped each time. Utility Model Content
[0003] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art and to provide a concrete pumping device that can accurately measure the volume of concrete pumped each time.
[0004] The present application also provides a prefabricated pile manufacturing device.
[0005] To achieve the above purpose, the technical solution adopted in this application is as follows:
[0006] According to a first aspect of the present application, a pumping device includes: a pumping assembly, the pumping assembly includes a first cylinder, a second cylinder and a piston rod, the first cylinder and the second cylinder are spaced apart along a first direction, the two ends of the piston rod along the first direction are respectively penetrated in the first cylinder and the second cylinder, and the piston rod is sealed and connected to the inner wall of the first cylinder and the inner wall of the second cylinder, the second cylinder is provided with a first cavity and a first opening connected to the first cavity, in the first direction, the first cavity is located on the side of the piston rod away from the first cylinder, and the first opening is opened at an end of the second cylinder away from the first cylinder; a control assembly, the control assembly includes a displacement sensor and a controller, the displacement sensor is electrically connected to the controller, and the displacement sensor is arranged on the first cylinder, when the piston rod moves in the first direction toward the second cylinder in the first cylinder, the displacement sensor is used to detect the displacement signal of the piston rod in the first cylinder and transmit the displacement signal to the controller.
[0007] The pumping device of the utility model has the following advantages:
[0008] In the above-mentioned concrete pumping device, since one end of the piston rod along the first direction is inserted into the first cylinder, and the other end of the piston rod along the first direction is inserted into the second cylinder, and the piston rod is sealed and connected to the inner wall of the first cylinder and the inner wall of the second cylinder, when the end of the piston rod connected to the first cylinder moves along the first direction toward the direction away from the second cylinder, the end of the piston rod connected to the second cylinder will move along the first direction toward the direction close to the first cylinder. At this time, the volume of the first cavity will increase, so that the pressure in the first cavity will decrease. In this way, concrete can be sucked into the first cavity through the first opening. When the end of the piston rod connected to the first cylinder moves along the first direction toward the direction close to the second cylinder, the piston rod The end of the rod connected to the second cylinder moves along the first direction toward away from the first cylinder. At this time, the volume of the first chamber will decrease, so that the pressure in the first chamber will increase. In this way, the concrete in the first chamber can be pushed out of the first chamber through the first opening, so as to achieve the pumping of the concrete. In this process of pumping the concrete, since the first cylinder is provided with a displacement sensor, the displacement of the end of the piston connected to the first cylinder moving along the first direction toward the second cylinder in the first cylinder can be detected by the displacement sensor, and the displacement signal is transmitted to the controller to calculate the pumping amount of the concrete by the distance moved by the piston in the first cylinder, so as to achieve accurate calculation of the pumping volume of the concrete.
[0009] According to the pumping device of the first aspect of the present application, the control assembly further comprises a pressure sensor, the pressure sensor is electrically connected to the controller, and the pressure sensor is arranged on the first cylinder barrel, when the piston rod moves in the first direction toward the second cylinder barrel in the first cylinder barrel, the pressure sensor is used to detect the pressure signal of the piston rod in the first cylinder barrel, and transmit the pressure signal to the controller;
[0010] When the pressure detected by the pressure sensor reaches a preset pressure, the controller controls the displacement sensor to detect the displacement signal.
[0011] According to the pumping device of the first aspect of the present application, the preset pressure is F n , satisfying: F n =2[(F n-1 ) max ] / 3;
[0012] Among them, (F n-1 ) max It represents the maximum value of the pressure signal detected by the pressure sensor during the n-1th pumping process, where n is a positive integer greater than 1.
[0013] According to the pumping device of the first embodiment of the present application, when n=1, it satisfies: F1=8Mpa.
[0014] According to the pumping device of the first aspect of the present application, when the end of the piston rod passing through the first cylinder moves along the first direction toward the direction close to the second cylinder, the volume of the first chamber decreases by the volume of concrete pumped by the second cylinder in a single time, and the volume is V, which satisfies: V=ksh;
[0015] Wherein, k is the volume coefficient, s is the projection area of the first cylinder on a plane perpendicular to the first direction, and h is the displacement value reflected by the displacement signal.
[0016] According to the pumping device of the first embodiment of the present application, the volume coefficient k satisfies: k>1.
[0017] According to the pumping device of the first aspect embodiment of the present application, the concrete pumping device also includes a cooling assembly. In the first direction, the cooling assembly is arranged between the first cylinder and the second cylinder, and the two ends of the cooling assembly are respectively sealed and connected to the first cylinder and the second cylinder. The cooling assembly is provided with an avoidance hole, and the piston rod is simultaneously penetrated through the first cylinder, the avoidance hole and the second cylinder.
[0018] According to the pumping device of the first aspect of the present application, there are two pumping assemblies, the two pumping assemblies are arranged in parallel along the second direction, and the first cylinder barrel of each pumping assembly is arranged on one side of the cooling assembly along the first direction, and the second cylinder barrel of each pumping assembly is arranged on the other side of the cooling assembly along the first direction, the cooling assembly is provided with a plurality of avoidance holes arranged in an array along the second direction, each piston rod is penetrated in one avoidance hole, and there are two control assemblies, each of which is arranged on one of the first cylinder barrels;
[0019] The second direction is perpendicular to the first direction.
[0020] According to the pumping device of the first aspect embodiment of the present application, each of the first cylinders is provided with a second cavity and a second opening connected to the second cavity, in the first direction, the second cavity is located on the side of the piston rod away from the second cylinder, the second opening is opened at one end of the first cylinder away from the second cylinder, and the two second cavities are connected through the two second openings.
[0021] The precast pile manufacturing equipment according to the first embodiment of the present application includes: the concrete pumping device as described above.
[0022] The prefabricated pile manufacturing equipment of the utility model has the following advantages:
[0023] In the above-mentioned precast pile manufacturing equipment, since the above-mentioned concrete pumping device can accurately measure the volume of concrete pumped each time, the total volume of concrete pumped for multiple times can be accurately calculated, so as to obtain the total volume of concrete pumped into the precast pile, so that the calculated total volume of concrete matches the preset concrete volume required for the precast pile, so as to meet the structural strength requirements of the precast pile. In this way, the above-mentioned precast pile manufacturing equipment can improve the product yield of the precast piles. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 A schematic diagram of the structure of the pumping device in the present application is shown;
[0026] Figure 2 The schematic diagram of the structure of the first cylinder and the control assembly in the present application is shown;
[0027] Figure 3 The schematic diagram of the structure of the first cylinder, the second cylinder and the cooling assembly in the present application is shown;
[0028] Figure 4 A schematic diagram of the structure of the pumping assembly and the cooling assembly in the present application is shown.
[0029] Description of main component symbols:
[0030] 100-pumping assembly; 110-first cylinder; 111-second chamber; 112-second opening; 120-second cylinder; 121-first chamber; 122-first opening; 130-piston rod;
[0031] 200-control component; 210-displacement sensor; 220-pressure sensor;
[0032] 300-cooling component; 310-avoidance hole. DETAILED DESCRIPTION
[0033] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0036] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0037] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0038] Reference Figure 1 as well as Figure 4As shown, the concrete pumping device involved in the embodiment of the present application includes: a pumping component 100 and a control component 200.
[0039] Specifically, the pumping assembly 100 includes a first cylinder 110, a second cylinder 120 and a piston rod 130. The first cylinder 110 and the second cylinder 120 are spaced apart along a first direction. The two ends of the piston rod 130 along the first direction are respectively penetrated in the first cylinder 110 and the second cylinder 120, and the piston rod 130 is sealedly connected to the inner wall of the first cylinder 110 and the inner wall of the second cylinder 120. The second cylinder 120 is provided with a first cavity 121 and a first opening 122 connected to the first cavity 121. In the first direction, the first cavity 121 is located at the piston rod 130. The rod 130 is on one side away from the first cylinder 110, and the first opening 122 is opened at one end of the second cylinder 120 away from the first cylinder 110; the control component 200 includes a displacement sensor 210 and a controller, the displacement sensor 210 is electrically connected to the controller, and the displacement sensor 210 is arranged on the first cylinder 110. When the piston rod 130 moves along the first direction in the first cylinder 110 toward the second cylinder 120, the displacement sensor 210 is used to detect the displacement signal of the piston rod 130 in the first cylinder 110 and transmit the displacement signal to the controller.
[0040] It should be noted that the first direction is Figure 1 The direction that x points to.
[0041] In the above-mentioned concrete pumping device, since one end of the piston rod 130 along the first direction is inserted into the first cylinder 110, and the other end of the piston rod 130 along the first direction is inserted into the second cylinder 120, and the piston rod 130 is sealedly connected to the inner wall of the first cylinder 110 and the inner wall of the second cylinder 120, when the end of the piston rod 130 connected to the first cylinder 110 moves along the first direction toward the direction away from the second cylinder 120, the end of the piston rod 130 connected to the second cylinder 120 will move along the first direction toward the direction close to the first cylinder 110. At this time, the volume of the first cavity 121 will increase, so that the pressure in the first cavity 121 is reduced. In this way, concrete can be sucked into the first cavity 121 through the first opening 122. When the end of the piston rod 130 connected to the first cylinder 110 moves along the first direction toward the direction close to the second cylinder 120 When the piston rod 130 is connected to the second cylinder 120, the end thereof connected to the second cylinder 120 will move in the first direction away from the first cylinder 110. At this time, the volume of the first chamber 121 will decrease, so that the pressure in the first chamber 121 will increase. In this way, the concrete in the first chamber 121 can be pushed out of the first chamber 121 through the first opening 122, so as to realize the pumping of the concrete. In the process of pumping the concrete, since the first cylinder 110 is provided with a displacement sensor 210, the displacement of the end of the piston connected to the first cylinder 110 moving in the first direction toward the second cylinder 120 in the first cylinder 110 can be detected by the displacement sensor 210, and the displacement signal can be transmitted to the controller, so as to calculate the pumping amount of the concrete by the distance moved by the piston in the first cylinder 110, so as to realize the accurate calculation of the pumping volume of the concrete.
[0042] Reference Figure 2 As shown, the control component 200 also includes a pressure sensor 220, which is electrically connected to the controller and is arranged on the first cylinder 110. When the piston rod 130 moves in the first direction toward the second cylinder 120 in the first cylinder 110, the pressure sensor 220 is used to detect the pressure signal of the piston rod 130 in the first cylinder 110 and transmit the pressure signal to the controller; wherein, when the pressure detected by the pressure sensor 220 reaches a preset pressure, the controller controls the displacement sensor 210 to detect the displacement signal.
[0043] It should be noted that when the end of the piston rod 130 connected to the first cylinder 110 moves along the first direction toward the direction close to the second cylinder 120, the end of the piston rod 130 connected to the second cylinder 120 will move along the first direction toward the direction away from the first cylinder 110, and the piston rod 130 will apply a thrust to the concrete to move toward the first opening 122. At the same time, the concrete will also apply a certain pressure to the piston rod 130. However, in the early stage of the movement of the piston rod 130, the piston rod 130 may be pushed empty. Therefore, this section of empty push stroke needs to be removed to make the calculation of the pumping volume of the concrete more accurate. During the process of empty push of the piston rod 130, the piston rod 130 will not be subjected to the pressure applied by the concrete. Only when the pressure exerted on the piston rod 130 reaches the preset pressure, the subsequent stroke of the piston rod 130 can be regarded as the pumping stroke of the concrete. In this way, when the pressure exerted on the piston rod 130 reaches the preset pressure, the position of the piston rod 130 is the starting position of the concrete pumping stroke.
[0044] In this embodiment, the pressure signal of the piston rod 130 in the first cylinder 110 can be detected by the pressure sensor 220, and the pressure signal can be transmitted to the controller. In the process of the end of the piston rod 130 connected to the first cylinder 110 moving along the first direction toward the direction close to the second cylinder 120, when the pressure sensor 220 detects that the pressure signal of the piston rod 130 increases to a preset pressure, the controller controls the displacement sensor 210 to start detecting the displacement signal to reduce the influence of the idle push stroke of the piston rod 130 on the calculation of the pumping volume of the concrete, thereby improving the accuracy of the calculation of the pumping volume of the concrete.
[0045] Specifically, the preset pressure is F n , satisfying: F n =2[(F n-1 ) max ] / 3; where (F n-1 ) max represents the maximum value of the pressure signal detected by the pressure sensor 220 during the n-1th pumping process, where n is a positive integer greater than 1.
[0046] More specifically, in this embodiment, F2=2[(F1) max ] / 3, F3=2[(F2) max ] / 3, F4=2[(F3) max ] / 3, F5=2[(F4) max ] / 3, F6=2[(F5) max ] / 3, F7, F8, F9,,, F n And so on.
[0047] In this embodiment, during the nth movement of the end of the piston rod 130 connected to the first cylinder 110 along the first direction toward the direction close to the second cylinder 120, when n>1, when the pressure sensor 220 detects that the pressure signal of the piston rod 130 increases to F n =2[(F n-1 ) max ] / 3, the controller controls the displacement sensor 210 to start detecting the displacement signal to reduce the influence of the idle push stroke of the piston rod 130 on the calculation of the pumping volume of the concrete, thereby improving the accuracy of the calculation of the pumping volume of the concrete.
[0048] Specifically, when n=1, it satisfies: F1=8Mpa.
[0049] In this embodiment, during the first movement of the end of the piston rod 130 connected to the first cylinder 110 along the first direction toward the direction close to the second cylinder 120, it is known through multiple experimental experiences that when F1=12×(2 / 3)Mpa=8Mpa, the piston rod 130 ends the idle push stroke and starts to push the concrete. At this time, the controller controls the displacement sensor 210 to start detecting the displacement signal to reduce the influence of the idle push stroke of the piston rod 130 on the calculation of the pumping volume of the concrete.
[0050] Reference Figure 1 As shown, when one end of the piston rod 130 passing through the first cylinder 110 moves along the first direction toward the direction close to the second cylinder 120, the volume of the first volume chamber 121 decreases by the volume of concrete pumped by the second cylinder 120 in a single time, which is V, satisfying: V = ksh;
[0051] Wherein, k is the volume coefficient, s is the projection area of the first cylinder 110 on the plane perpendicular to the first direction, and h is the displacement value reflected by the displacement signal.
[0052] Specifically, in one embodiment, the projection shape of the first cylinder 110 on a plane perpendicular to the first direction is a circle, then s=πr 2 , where r is the radius of the circle; in another embodiment, the projection shape of the first cylinder 110 on the plane perpendicular to the first direction is a rectangle, then s=ab, where a is the length of the rectangle, and b is the width of the rectangle; in addition, the projection of the first cylinder 110 on the plane perpendicular to the first direction can also be other shapes, such as a triangle, a trapezoid, etc.
[0053] In this embodiment, since the two ends of the piston rod 130 along the first direction are respectively linked in the first cylinder 110 and the second cylinder 120, during the movement of the piston rod 130, the volume change value of the first chamber 121 can be calculated by the moving stroke of the piston rod 130 in the first cylinder 110 and the cross-sectional area of the first cylinder 110, so as to obtain the pumping volume of the concrete, that is, volume V=ksh, wherein k is the volume coefficient. When problems occur in the concrete due to changes in the moisture content of the concrete itself, the quality of the concrete and other external environmental factors, the calculated pumping volume of the concrete needs to be corrected by the volume coefficient.
[0054] Specifically, the volume coefficient k satisfies: k>1.
[0055] In this embodiment, during the concrete pumping process, it is usually agreed that concrete moisture loss, waste material or slag dumping, etc. will occur. Therefore, when k>1, the volume loss problem caused by the loss of concrete moisture, waste material or slag dumping, etc. can be compensated to improve the accuracy of concrete volume calculation.
[0056] Reference Figure 3 as well as Figure 4 As shown, the concrete pumping device also includes a cooling assembly 300. In a first direction, the cooling assembly 300 is arranged between the first cylinder 110 and the second cylinder 120, and the two ends of the cooling assembly 300 are respectively sealed and connected to the first cylinder 110 and the second cylinder 120. The cooling assembly 300 is provided with an avoidance hole 310, and the piston rod 130 is simultaneously penetrated through the first cylinder 110, the avoidance hole 310 and the second cylinder 120.
[0057] It is understandable that when the piston rod 130 moves along the first direction in the first cylinder 110 and the second cylinder 120, the piston rod 130 will generate friction with the inner wall of the first cylinder 110 and the inner wall of the second cylinder 120. At this time, the problem of frictional heating will occur. Since the cooling component 300 is arranged between the first cylinder 110 and the second cylinder 120, and the piston rod 130 is simultaneously penetrated by the first cylinder 110, the avoidance hole 310 of the cooling component 300 and the second cylinder 120, the cooling component 300 can be used to dissipate heat from the first cylinder 110, the second cylinder 120 and the piston rod 130, thereby reducing the impact of heat on the concrete and reducing the moisture loss of the concrete.
[0058] Reference Figure 4As shown, there are two pumping assemblies 100, the two pumping assemblies 100 are arranged in parallel along the second direction, and the first cylinder 110 of each pumping assembly 100 is arranged on one side of the cooling assembly 300 along the first direction, and the second cylinder 120 of each pumping assembly 100 is arranged on the other side of the cooling assembly 300 along the first direction, and the cooling assembly 300 is provided with a plurality of avoidance holes 310 arranged in an array along the second direction, and each piston rod 130 is penetrated in an avoidance hole 310, and there are two control assemblies 200, and the pressure sensor 220 and the displacement sensor 210 of each control assembly 200 are arranged on a first cylinder 110; wherein, the second direction is perpendicular to the first direction.
[0059] It should be noted that the second direction is Figure 1 The direction that y points to.
[0060] In this embodiment, concrete pumping can be performed in turn by two pumping assemblies 100 to improve the concrete pumping efficiency. Meanwhile, the two pumping assemblies 100 can be cooled simultaneously by the cooling assembly 300 .
[0061] Continue to refer to Figure 4 As shown, each first cylinder 110 is provided with a second cavity 111 and a second opening 112 connected to the second cavity 111. In the first direction, the second cavity 111 is located on the side of the piston rod 130 away from the second cylinder 120. The second opening 112 is opened at one end of the first cylinder 110 away from the second cylinder 120. The two second cavities 111 are connected through the two second openings 112.
[0062] In this embodiment, each second cavity 111 is used to carry hydraulic oil, or the second cavity 111 is used to carry gas. Since the two second cavities 111 are connected through the two second openings 112, when the volume of one of the second cavities 111 becomes smaller, the volume of the other second cavity 111 will become larger. Furthermore, the two piston rods 130 will move in different directions in the first direction, thereby realizing the function of the two pumping assemblies 100 pumping concrete in turn.
[0063] The precast pile manufacturing equipment involved in the embodiment of the present application includes: the above-mentioned concrete pumping device.
[0064] In the above-mentioned precast pile manufacturing equipment, since the above-mentioned concrete pumping device can accurately measure the volume of concrete pumped each time, the total volume of concrete pumped for multiple times can be accurately calculated, so as to obtain the total volume of concrete pumped into the precast pile, so that the calculated total volume of concrete matches the preset concrete volume required for the precast pile, so as to meet the structural strength requirements of the precast pile. In this way, the above-mentioned precast pile manufacturing equipment can improve the product yield of the precast piles.
[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example 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 specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0066] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. A concrete pumping device, characterized in that: include: A pumping assembly, the pumping assembly comprising a first cylinder, a second cylinder and a piston rod, the first cylinder and the second cylinder are spaced apart along a first direction, the two ends of the piston rod along the first direction are respectively penetrated in the first cylinder and the second cylinder, and the piston rod is sealedly connected to the inner wall of the first cylinder and the inner wall of the second cylinder, the second cylinder is provided with a first cavity and a first opening communicated with the first cavity, in the first direction, the first cavity is located on a side of the piston rod away from the first cylinder, and the first opening is opened at an end of the second cylinder away from the first cylinder; A control component, wherein the control component includes a displacement sensor and a controller, wherein the displacement sensor is electrically connected to the controller and is disposed on the first cylinder, and when the piston rod moves in the first direction toward the second cylinder in the first cylinder, the displacement sensor is used to detect a displacement signal of the piston rod in the first cylinder and transmit the displacement signal to the controller.
2. The concrete pumping device according to claim 1, characterized in that: The control assembly further includes a pressure sensor, which is electrically connected to the controller and is disposed on the first cylinder. When the piston rod moves in the first direction toward the second cylinder in the first cylinder, the pressure sensor is used to detect a pressure signal of the piston rod in the first cylinder and transmit the pressure signal to the controller. When the pressure detected by the pressure sensor reaches a preset pressure, the controller controls the displacement sensor to detect the displacement signal.
3. The concrete pumping device according to claim 2, characterized in that: The preset pressure is F n , satisfying: F n =2[(F n-1 ) max ] / 3; Among them, (F n-1 ) max It represents the maximum value of the pressure signal detected by the pressure sensor during the n-1th pumping process, where n is a positive integer greater than 1.
4. The concrete pumping device according to claim 3, characterized in that: When n=1, it satisfies: F1=8Mpa.
5. The concrete pumping device according to any one of claims 1 to 4, characterized in that: When the end of the piston rod passing through the first cylinder moves along the first direction toward the second cylinder, the volume of the first chamber decreases by the volume of concrete pumped by the second cylinder in a single time, and the volume is V, which satisfies: V=ksh; Wherein, k is the volume coefficient, s is the projection area of the first cylinder on a plane perpendicular to the first direction, and h is the displacement value reflected by the displacement signal.
6. The concrete pumping device according to claim 5, characterized in that: The volume coefficient k satisfies: k>1.
7. The concrete pumping device according to any one of claims 1 to 4, characterized in that: The concrete pumping device also includes a cooling assembly. In the first direction, the cooling assembly is arranged between the first cylinder barrel and the second cylinder barrel, and the two ends of the cooling assembly are respectively sealed and connected to the first cylinder barrel and the second cylinder barrel. The cooling assembly is provided with an avoidance hole, and the piston rod is simultaneously penetrated through the first cylinder barrel, the avoidance hole and the second cylinder barrel.
8. The concrete pumping device according to claim 7, characterized in that: There are two pumping assemblies, which are arranged in parallel along the second direction, and the first cylinder of each pumping assembly is arranged on one side of the cooling assembly along the first direction, and the second cylinder of each pumping assembly is arranged on the other side of the cooling assembly along the first direction. The cooling assembly is provided with a plurality of avoidance holes arranged in an array along the second direction, and each piston rod is penetrated in one avoidance hole. There are two control assemblies, and each control assembly is arranged on one of the first cylinders. The second direction is perpendicular to the first direction.
9. The concrete pumping device according to claim 8, characterized in that: Each of the first cylinders is provided with a second cavity and a second opening connected to the second cavity. In the first direction, the second cavity is located on the side of the piston rod away from the second cylinder. The second opening is opened at one end of the first cylinder away from the second cylinder. The two second cavities are connected through the two second openings.
10. A prefabricated pile manufacturing device, characterized in that: include: A concrete pumping device as claimed in any one of claims 1 to 9.