Pumping water tank and pumping equipment

Abstract

The present invention relates to the field of pumping equipment, and discloses a pumping water tank and a pumping equipment. Among them, the pumping water tank (10) is an integrally cast part and includes a concrete cylinder connection surface (11), an oil cylinder connection surface (12), and a side part (13) connecting the concrete cylinder connection surface (11) and the oil cylinder connection surface (12). The side part (13) includes a tie rod part (131) around the tie rod, and the tie rod part (131) has an arc-shaped cross-section with the center facing the outside of the pumping water tank (10) exposed. The pumping water tank of the present application is an integrally cast part, which is convenient for manufacturing, and the side part integrates the tie rod part, without using a complete pipe, reducing the self-weight of the pumping water tank.

Description

Technical Field

[0001] The present invention relates to a pumping device, and more particularly to a pumping water tank and a pumping device. Background Art

[0002] The pumping water tank is an important component of a pumping device (such as a concrete pump truck). In the prior art, the pumping water tank is usually assembled and prepared from plates and pipes through processes such as cutting, welding, heat treatment, machining, and painting. On the one hand, the plates and pipes need to be polished and other treatments before welding, and the processes of welding, heat treatment, machining, painting, etc. are complicated, which affects the production cycle. On the other hand, since the box-shaped shell is formed by welding plates and the pipes are used as the tie rod parts and arranged inside the box-shaped shell, the overall weight of the pumping water tank is relatively heavy, which has an adverse impact on the assembly safety, the operability of the whole vehicle, the power of the whole vehicle, the fuel consumption, etc. Summary of the Invention

[0003] The purpose of the present invention is to overcome the problems that the manufacturing process of the pumping water tank in the prior art is complex and the overall weight is relatively heavy, and to provide a pumping water tank which is easy to manufacture and can reduce the weight.

[0004] To achieve the above object, on the one hand, the present invention provides a pumping water tank, wherein the pumping water tank is a casting integral part and includes a concrete cylinder connection surface, an oil cylinder connection surface, and a side part connecting the concrete cylinder connection surface and the oil cylinder connection surface. The side part includes a tie rod part surrounding a tie rod, and the tie rod part has an arc-shaped cross section with the center facing the outside of the pumping water tank exposed.

[0005] Optionally, the side part includes two tie rod parts respectively located at the top and bottom of the side part and a transition part connected between the two tie rod parts.

[0006] Optionally, the inner wall of the transition part is formed into an arc shape; and / or, the connection between the transition part and the tie rod part is a circular arc transition.

[0007] Optionally, notches corresponding to the inner holes of the tie rod parts at the top of the side part are provided at both ends of the top of the concrete cylinder connection surface.

[0008] Optionally, the oil cylinder connection surface includes a connection surface main body and connection parts vertically extending from both sides of the connection surface main body towards the inside of the pumping water tank. The transition part extends to the connection parts, one side of the tie rod part extends to the connection surface main body, the other side of the tie rod part extends to the connection parts, and the connection parts are provided with tie rod holes communicating with the inner holes of the tie rod parts.

[0009] Optionally, the thickness of the connection part is a, the thickness of the connection surface main body is b, and 2b < a < 3b.

[0010] Optionally, the connection between the pull rod portion and the concrete cylinder connection surface is a smooth transition.

[0011] Optionally, the bottom of the concrete cylinder connection surface has a positioning portion for installation, the thickness of the positioning portion is c, the thickness of the concrete cylinder connection surface is d, and c = d.

[0012] Optionally, the bottom surface of the pumping water tank is provided with a drain hole, and the bottom surface is set to be concave and curved towards the drain hole.

[0013] This application also provides a pumping device, wherein the pumping device includes the pumping water tank of this application.

[0014] Through the above technical solution, the pumping water tank of this application is a casting integral part, which is convenient for manufacturing, and the side part integrates the pull rod portion, without using a complete pipe, reducing the self-weight of the pumping water tank. Description of the Drawings

[0015] Figure 1 is a perspective view of an embodiment of the pumping water tank of this application;

[0016] Figure 2 is Figure 1 a view of the pumping water tank without the concrete cylinder connection surface;

[0017] Figure 3 is Figure 1 a perspective view of another orientation of ;

[0018] Figure 4 is a perspective view of another embodiment of the pumping water tank of this application.

[0019] Description of the Reference Numerals

[0020] 10 - Pumping water tank, 11 - Concrete cylinder connection surface, 111 - Notch, 112 - Positioning portion, 113 - Through hole, 12 - Cylinder connection surface, 121 - Connection surface main body, 122 - Connection portion, 123 - Pull rod hole, 13 - Side portion, 131 - Pull rod portion, 132 - Transition portion, 14 - Intermediate rib, 15 - Bottom surface, 151 - Drain hole. Detailed Description of the Specific Embodiments

[0021] The following is a detailed description of the specific embodiments of the present invention in conjunction with the drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not used to limit the present invention.

[0022] In the present invention, unless otherwise stated, the orientation words such as "upper, lower, left, right" generally refer to the upper, lower, left, and right shown in the reference drawings; "inner, outer" refer to the inner and outer of the contour of each component itself. The following will refer to the drawings and combine the embodiments to detail this application.

[0023] According to an aspect of the present application, a pumping water tank is provided, wherein the pumping water tank 10 is a cast integral part and includes a concrete cylinder connection surface 11, an oil cylinder connection surface 12, and a side portion 13 connecting the concrete cylinder connection surface 11 and the oil cylinder connection surface 12. The side portion 13 includes a tie rod portion 131 around the tie rod, and the tie rod portion 131 has an arc-shaped cross-section with the center facing the outside of the pumping water tank 10 exposed.

[0024] The pumping water tank 10 of the present application is a cast integral part, which is convenient for manufacturing. Moreover, the side portion 13 integrates the tie rod portion 131, eliminating the need to use a complete pipe, thus reducing the self-weight of the pumping water tank 10.

[0025] To optimize the design of the pumping water tank of the present application, the inventor adopted finite element strength analysis and found that the stress requirements at the connection between the box body and the tie rod portion of the pumping water tank in the prior art are not high. Therefore, the box body and the tie rod portion can be integrated, and the structure of the tie rod portion can be appropriately simplified to reduce the self-weight. For this purpose, the cross-section of the tie rod portion 131 of the present application can be set to be arc-shaped. Specifically, the tie rod portion 131 can only have a part cut longitudinally from a cylindrical structure, with the weight reduced compared to a complete pipe. Moreover, the tie rod portion 131 is integrated on the side portion 13, and also serves to define the inner cavity of the pumping water tank 10.

[0026] Specifically, as Figure 1 shown, the tie rod portion 131 can be formed into a semi-cylindrical shape cut longitudinally, and the center of the cylindrical structure is exposed to the outside of the pumping water tank 10, that is, the tie rod portion 131 protrudes towards the inner cavity of the pumping water tank 10.

[0027] In addition, since the arc-shaped cross-section of the tie rod portion 131 is exposed to the outside, the tie rod can also be exposed when passing through the tie rod portion 131, avoiding the corrosion risk faced by the tie rod placed inside the water tank body in the prior art (in the prior art, a circular pipe is provided inside the water tank, and the tie rod passes through the circular pipe. Therefore, the welded connection between the circular pipe and the water tank body must ensure reliable sealing. Otherwise, the tie rod has a corrosion risk).

[0028] In addition, the side portion 13 can include two tie rod portions 131 respectively located at the top and bottom of the side portion and a transition portion 132 connecting the two tie rod portions 131. Specifically, as Figure 1 shown, the pumping water tank 10 includes two side portions 13 provided on both sides of the concrete cylinder connection surface 11. Each side portion 13 has two tie rod portions 131 located at the top and bottom and a transition portion 132 connecting the two tie rod portions 131. The tie rod portion 131 and the transition portion 132 together define the side wall of the inner cavity of the pumping water tank 10.

[0029] According to the inventor's research, the pumping water tank 10 in the length direction (i.e.,Figure 1 The left and right directions shown in the figure) can be supported by nylon pads, and the size of the nylon pads can be selected as needed, so that the length of the pumping water tank 10 can be reduced, for example, the side portion 13 can be thinned. In order to avoid the thinning design affecting the flow of metal during casting, as shown in the figure, the side portion 13 can be thinned. Figure 2 As shown, the inner wall of the transition portion 132 (i.e., the wall facing the inner cavity of the pumping water tank 10) can be formed into an arc shape, for example, it can be set to bulge outward away from the inner cavity of the pumping water tank 10. The outer wall of the transition portion 132 can be straight, and optionally, at least a portion of the outer wall of the transition portion 132 can also be formed into a corresponding arc shape to maintain the required wall thickness. In addition, in order to facilitate the flow of metal during casting and fully fill it to form the transition portion 132 and the tie rod portion 131, the connection between the transition portion 132 and the tie rod portion 131 is a circular arc transition.

[0030] To install the tie rod, the top ends of the concrete cylinder connection surface 11 are provided with notches 111 corresponding to the inner holes of the tie rod portion 131 at the top of the side. For the tie rod portion 131 at the bottom, the concrete cylinder connection surface 11 can be provided with corresponding through holes 113.

[0031] For the oil cylinder connection surface 12, in order to ensure that the tension of the pull rod is borne and the strength of the pumping water tank 10 is guaranteed, as shown in FIG. Figure 3 As shown, the oil cylinder connection surface 12 includes a connection surface body 121 and a connection portion 122 extending vertically from both sides of the connection surface body 121 toward the inside of the pumping water tank 10, the transition portion 132 extends to the connection portion 122, one side of the tie rod portion 131 extends to the connection surface body 121, and the other side of the tie rod portion 132 extends to the connection portion 122, and the connection portion 122 is provided with a tie rod hole 123 connected to the inner hole of the tie rod portion 131. In other words, the oil cylinder connection surface 12 is connected to the tie rod portion 131 through the connection portion 122, thereby enhancing the connection with the tie rod portion 131. Among them, the outer wall of the transition portion 132 does not exceed the outer surface of the connection portion 122, so as to facilitate positioning in the subsequent assembly process with the oil cylinder connection surface 12 and the concrete cylinder connection surface 11 as reference.

[0032] In addition, to ensure sufficient strength, such as Figure 1 As shown, the thickness of the connecting portion 122 (the dimension along the direction from the concrete cylinder connecting surface 11 to the oil cylinder connecting surface 12) is a, the thickness of the connecting surface body 121 is b, and 2b<a<3b.

[0033] Finite element analysis shows that the stress of the pumping water tank 10 is mainly concentrated at the connection between the tie rod portion 131 and the concrete cylinder connection surface 11. Preferably, the connection between the tie rod portion 131 and the concrete cylinder connection surface 11 is a smooth transition to avoid stress concentration at the connection.

[0034] For subsequent installation and positioning convenience, the bottom of the concrete cylinder connection surface 11 may have a positioning portion 112 for installation. The thickness of the positioning portion 112 is c, and the thickness of the concrete cylinder connection surface 11 is d, where c = d. Among them, the through hole 113 of the tie rod portion 131 corresponding to the bottom of the concrete cylinder connection surface 11 may be opened on the positioning portion 112. The positioning portion 112 may have a flat bottom edge and a uniform thickness for positioning.

[0035] In addition, in Figure 1 the shown embodiment, an intermediate rib 14 may be provided at the middle position inside the pumping water tank 10 to strengthen the connection between the concrete cylinder connection surface 11 and the oil cylinder connection surface 12. However, it may also be like Figure 4 the shown embodiment without the intermediate rib 14.

[0036] Furthermore, a drain hole 151 is provided on the bottom surface 15 of the pumping water tank 10 to drain the water inside the pumping water tank 10 through the drain hole 151. To facilitate the rapid drainage of the water inside the pumping water tank 10 during drainage, the bottom surface 15 is set to be concave and curved towards the drain hole 151.

[0037] The pumping water tank 10 of the present application can be integrally formed with a suitable material. For example, it can be made of nodular iron or gray iron. According to an embodiment of the present application, the structure shown in Figure 1 can be adopted, and the designed allowable stress reaches 330 MPa (the ultimate tensile strength is 462 MPa). Nodular iron (such as QT500-7, QT600-3, QT700-2) is used for casting to prepare the pumping water tank 10 of the present application. By comparing with the pumping water tank of the prior art, the pumping water tank 10 of the present application reduces the weight by 7.43%.

[0038] According to another aspect of the present application, a pumping device is provided, wherein the pumping device includes the pumping water tank 10 of the present application.

[0039] The pumping water tank 10 of the present application is a cast integral part, which is convenient for manufacturing. And the side portion 13 integrates the tie rod portion 131, without the need to use a complete pipe, reducing the self-weight of the pumping water tank 10. Therefore, the pumping device of the present application can reduce the self-weight, power, fuel consumption, etc. of the whole machine.

[0040] Among them, the pumping equipment can be in various appropriate forms, for example, it can be a concrete pump truck. During assembly, the pumping water tank 10, the concrete cylinder and the hopper are connected by tie rods. Specifically, the concrete cylinder connection surface 11 is connected to the concrete cylinder, the oil cylinder connection surface 12 is connected to the oil cylinder, and the tie rod passes through the pumping water tank 10 through the tie rod part 131. One end of the tie rod can be fixed to the oil cylinder vertical plate surface of the oil cylinder through a tie rod nut. This avoids the rust risk faced by the tie rod placed inside the water tank body in the prior art (in the prior art, a round pipe is arranged inside the water tank, and the tie rod passes through the round pipe. Therefore, the welded connection between the round pipe and the water tank body must ensure reliable sealing. Otherwise, the tie rod has a rust risk).

[0041] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention. This application includes various specific technical features combined in any suitable manner. To avoid unnecessary repetition, the present invention does not explain various possible combination methods separately. But these simple modifications and combinations should also be regarded as the content disclosed by the present invention and all fall within the protection scope of the present invention.

Claims

1. A pumping water tank, characterized in that, The pumping water tank (10) is a cast integral part and includes a concrete cylinder connection surface (11), an oil cylinder connection surface (12), and a side portion (13) connecting the concrete cylinder connection surface (11) and the oil cylinder connection surface (12). The side portion (13) includes a tie rod portion (131) around the tie rod, and the tie rod portion (131) has an arc-shaped cross-section with the center exposed towards the outside of the pumping water tank (10); The side portion (13) includes two such tie rod portions (131) respectively located at the top and bottom of the side portion, and a transition portion (132) connected between the two tie rod portions (131); The oil cylinder connection surface (12) includes a connection surface main body (121) and connection portions (122) vertically extending towards the inside of the pumping water tank (10) from both sides of the connection surface main body (121). The transition portion (132) extends to the connection portion (122). One side of the tie rod portion (131) extends to the connection surface main body (121), and the other side of the tie rod portion (131) extends to the connection portion (122). The connection portion (122) is provided with a tie rod hole (123) communicating with the inner hole of the tie rod portion (131); A drain hole (151) is provided on the bottom surface (15) of the pumping water tank (10); The thickness of the connection portion (122) is a, and the thickness of the connection surface main body (121) is b, where 2b < a < 3b.

2. The pumping water tank according to claim 1, wherein, The inner wall of the transition portion (132) is formed in an arc shape; and / or, the connection between the transition portion (132) and the tie rod portion (131) is a circular arc transition.

3. The pumping water tank according to claim 1, characterized in that, Notches (111) corresponding to the inner holes of the tie rod portions (131) at the top of the side portion are provided at both ends of the top of the concrete cylinder connection surface (11).

4. The pumping water tank according to claim 1, wherein The connection between the tie rod portion (131) and the concrete cylinder connection surface (11) is a smooth transition.

5. The pumping water tank according to claim 1, characterized in that, The bottom of the concrete cylinder connection surface (11) has a positioning portion (112) for installation. The thickness of the positioning portion (112) is c, and the thickness of the concrete cylinder connection surface (11) is d, where c = d.

6. The pumping water tank according to claim 1, wherein, The bottom surface (15) is set to be concave and curved towards the drain hole (151).

7. A pumping device, characterized in that, The pumping device includes the pumping water tank (10) according to any one of claims 1-6.

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