Durable concrete pump truck skirt valve butterfly plate

Abstract

The utility model relates to a durable concrete pump truck skirt valve butterfly plate, and belongs to the field of concrete mechanical equipment, the durable concrete pump truck skirt valve butterfly plate comprises a body plate, a mounting hole is formed in the body plate, the body plate comprises two wing plates, the two wing plates are symmetrically arranged, a weight reduction groove is formed in the body plate, one side of the body plate is a working surface, the other side of the body plate is a mounting surface, and the mounting surface is a convex surface. The two weight reduction grooves are formed in the mounting face, and each weight reduction groove is formed in one wing plate. The number of the weight reduction grooves is small, the shape of the weight reduction grooves can be set more regularly, the effect of reducing cost can be achieved for forming machining of the body plate, and the stress condition of the body plate can also be optimized.

Description

Technical Field

[0001] The present application relates to the field of concrete machinery and equipment, and in particular to a durable butterfly plate of a skirt valve of a concrete pump truck. Background Art

[0002] Skirt valve is a kind of valve body structure of distribution valve. Distribution valve is an important part of concrete pumping equipment. It is named because its outlet is shaped like a skirt. Skirt valve mainly includes valve body, cutting ring and butterfly plate. Cutting ring and butterfly plate are respectively arranged at both ends of valve body, and butterfly plate is fixed to valve body by bolts.

[0003] The Chinese utility model with the announcement number CN219082275U discloses a butterfly plate for a skirt valve which is easy to install, comprising a butterfly body plate, and a plurality of weight-reducing grooves are provided on the butterfly body plate.

[0004] According to the drawings in the specification, the shape and number of the weight-reducing grooves are less regular, so for the butterfly plate, whether it is cast or milled, the processing cost is high, and the finished butterfly plate is prone to stress concentration when in use. Utility Model Content

[0005] In order to improve the above problems, the present application provides a durable butterfly plate for a skirt valve of a concrete pump truck.

[0006] The present application provides a durable concrete pump truck skirt valve butterfly plate adopts the following technical solution:

[0007] A durable butterfly plate for a skirt valve of a concrete pump truck comprises a main body plate, a mounting hole is provided on the main body plate, the main body plate comprises two wing plates, the two wing plates are symmetrically arranged, a weight-reducing groove is provided on the main body plate, one side of the main body plate is a working surface, and the other side is a mounting surface, the weight-reducing groove is located on the mounting surface, the number of the weight-reducing grooves is two, and a single weight-reducing groove is located on one wing plate.

[0008] By adopting the above technical solution, a single wing panel corresponds to a weight-reducing groove, the number of weight-reducing grooves is reduced, and the shapes can be set more regularly, which can reduce the cost of forming the main plate and optimize the stress condition of the main plate.

[0009] Preferably, a main stress-bearing area is formed between the edge of the groove of the weight-reducing groove and the edge of the main body plate, and between the edge of the hole of the mounting hole and the edge of the main body plate, and the main stress-bearing area surrounds the weight-reducing groove and the mounting hole.

[0010] By adopting the above technical solution, the edge of the main body plate is the main part that is subjected to severe stress, and the weight-reducing groove does not touch the edge of the main body plate, thereby ensuring the stress resistance of the main body plate to a certain extent.

[0011] Preferably, the edge of the main body plate includes a main semicircular arc and two secondary semicircular arcs, the two secondary semicircular arcs are respectively connected to the two ends of the main semicircular arc, and a single secondary semicircular arc is located on a wing plate. The width dimension of the main force-bearing area between the weight-reducing groove and the edge of the main body plate is greater than 0.28 times the radius of the secondary semicircular arc and less than 0.4 times the radius of the secondary semicircular arc, and the width dimension of the main force-bearing area between the edge of the mounting hole and the edge of the main body plate is greater than 0.35 times the radius of the mounting hole and less than 0.42 times the radius of the mounting hole.

[0012] Preferably, the depth of the weight-reducing groove is less than or equal to 0.4 times the thickness of the main body plate.

[0013] Preferably, a transition zone is formed between the weight-reducing groove and the mounting hole, the transition zone is coplanar with the main force-bearing zone, and the minimum width of the transition zone is greater than 0.4 times the radius of the mounting hole.

[0014] By adopting the above technical solution, the transition area and the main stress-bearing area are both parts of the main body plate with higher stress resistance strength.

[0015] Preferably, a mounting thread groove is provided on one side of the mounting surface of the main body plate, the mounting thread groove is located in the transition zone or the main stress-bearing zone, and the depth of the mounting thread groove is less than the thickness of the main body plate.

[0016] By adopting the above technical solution, the valve body of the skirt valve can be connected and fixed to the main plate by screwing bolts into the mounting thread groove. If the mounting thread groove does not penetrate to the working surface, the working surface will be a relatively flat plate surface, and the force condition of the working surface of the main plate will be more stable and uniform during operation.

[0017] Preferably, the main body plate is integrally cast.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1. By setting a single wing plate to correspond to one weight-reducing groove, the number of weight-reducing grooves is reduced and the shapes can be set more regularly, which can reduce the cost of the forming process of the main body plate and optimize the stress condition of the main body plate;

[0020] 2. The edge of the main body plate is the main stress-bearing part. Through the setting of the main stress-bearing area, the main stress-bearing area surrounds the weight-reducing groove and the mounting hole, that is, the thickness of the edge of the main body plate is higher and the wear resistance is greater, thereby improving the durability and service life of the main body plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the mounting surface structure of the butterfly plate of the skirt valve of a durable concrete pump truck in the embodiment of the present application.

[0022] Figure 2It is used in the embodiment of this application to embody Figure 1 Schematic diagram of the structural section of section A.

[0023] Figure 3 It is used in the embodiment of this application to embody Figure 1 Schematic diagram of the structural cross-section of section B.

[0024] Explanation of the reference numerals: 1. Main body plate; 11. Mounting hole; 12. Main semicircular arc; 13. Secondary semicircular arc; 14. Wing plate; 15. Mounting thread groove; 16. Main force-bearing area; 17. Transition area; 18. Mounting surface; 181. Weight-reducing groove; 19. Working surface. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-3 This application is described in further detail.

[0026] The embodiment of the present application discloses a durable concrete pump truck skirt valve butterfly plate, such as Figure 1 and 2 As shown, it includes a body plate 1, and the plate surface of the body plate 1 is symmetrically butterfly-shaped, which includes two wing plates 14. A mounting hole 11 is opened in the middle of the body plate 1, and the two wing plates 14 are respectively located on opposite sides of the mounting hole 11; the edge of the body plate 1 includes a main semicircular arc 12 and two secondary semicircular arcs 13, and the two secondary semicircular arcs 13 are respectively connected to the two ends of the main semicircular arc 12, and a single secondary semicircular arc 13 is located on a wing plate 14, and the symmetry axis of the body plate 1 passes through the center of the mounting hole 11 and the midpoint of the main semicircular arc 12.

[0027] like Figure 1 , 2 As shown in Figure 3, one side of the body plate 1 is the working surface 19, and the other side is the mounting surface 18. In the installed state, the working surface 19 faces the valve core of the skirt valve, and the mounting surface 18 is connected and fixed to the valve body. Two weight-reducing grooves 181 are provided on one side of the mounting surface 18 of the body plate 1, and a single weight-reducing groove 181 is located on a wing plate 14; the groove depth of the weight-reducing groove 181 is less than or equal to 0.4 times the thickness of the body plate 1. In this embodiment, the thickness of the body plate 1 is 25 mm, the groove depth of the weight-reducing groove 181 is 10 mm, and the contour of the intersection of the groove wall and the groove bottom of the weight-reducing groove 181 is provided with a 5 mm chamfer.

[0028] like Figure 1 and 2As shown, a main force-bearing area 16 is formed between the edge of the slot of the weight-reducing slot 181 and the edge of the main plate 1, and between the edge of the hole of the mounting hole 11 and the edge of the main plate 1. A transition area 17 is formed between the weight-reducing slot 181 and the mounting hole 11. The surfaces of the transition area 17 and the main force-bearing area 16 are coplanar, and both are the surfaces of the mounting surface 18 of the main plate 1. The main force-bearing area 16 surrounds the weight-reducing slot 181 and the mounting hole 11, that is, the overall edge thickness of the main plate 1 is 25 mm. The width of the main force-bearing area 16 between the weight-reducing slot 181 and the edge of the main plate 1 is greater than 0.28 times the radius of the secondary semicircular arc 13 and less than 0.4 times the radius of the secondary semicircular arc 13. The width of the main force-bearing area 16 between the edge of the mounting hole 11 and the edge of the main plate 1 is greater than 0.35 times the radius of the mounting hole 11 and less than 0.42 times the radius of the mounting hole 11. The minimum width of the transition area 17 is greater than 0.4 times the radius of the mounting hole 11. In this embodiment, the radius of the main semicircular arc 12 is 317 mm, the radius of the secondary semicircular arc 13 is 138 mm, and the radius of the mounting hole 11 is 97.5 mm; the width of the main force-bearing area 16 between the weight-reducing groove 181 and the edge of the main body plate 1 is at least 45 mm, the minimum width of the main force-bearing area 16 between the edge of the mounting hole 11 and the edge of the main body plate 1 is 40 mm, and the shortest width of the transition zone 17 is 41 mm.

[0029] like Figure 1 and 3 As shown, the body plate 1 is an integral casting, and one side of the mounting surface 18 of the body plate 1 is provided with four mounting thread grooves 15, which are respectively located around the mounting holes 11, two of which are located in the transition area 17, and the other two are located in the main force-bearing area 16. The mounting thread grooves 15 do not penetrate the body plate 1, and their depth is less than 20 mm.

[0030] The implementation principle of a durable concrete pump truck skirt valve butterfly plate in the embodiment of the present application is:

[0031] The valve body of the skirt valve is connected and fixed to the main body plate 1 by screwing bolts into the mounting thread groove 15. The working surface 19 of the main body plate 1 is an overall flat surface, which is continuously rubbed by the valve body during operation.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A durable concrete pump truck skirt valve butterfly plate, comprising a main body plate (1), the main body plate (1) is provided with a mounting hole (11), the main body plate (1) comprises two wing plates (14), the two wing plates (14) are symmetrically arranged, the main body plate (1) is provided with a weight reduction groove (181), characterized in that: One side of the main body plate (1) is a working surface (19), and the other side is a mounting surface (18). The weight-reducing groove (181) is located on the mounting surface (18). The number of the weight-reducing grooves (181) is two, and a single weight-reducing groove (181) is located on one wing plate (14).

2. The durable concrete pump truck skirt valve butterfly plate according to claim 1, characterized in that: A main force-bearing area (16) is formed between the edge of the slot of the weight-reducing slot (181) and the edge of the main body plate (1), and between the edge of the hole of the mounting hole (11) and the edge of the main body plate (1), and the main force-bearing area (16) surrounds the weight-reducing slot (181) and the mounting hole (11).

3. The durable concrete pump truck skirt valve butterfly plate according to claim 2, characterized in that: The edge of the main body plate (1) comprises a main semicircular arc (12) and two secondary semicircular arcs (13), the two secondary semicircular arcs (13) are respectively connected to the two ends of the main semicircular arc (12), and a single secondary semicircular arc (13) is located on a wing plate (14). The width dimension of the main force-bearing area (16) between the weight-reducing groove (181) and the edge of the main body plate (1) is greater than 0.28 times the radius of the secondary semicircular arc (13) and less than 0.4 times the radius of the secondary semicircular arc (13). The width dimension of the main force-bearing area (16) between the edge of the mounting hole (11) and the edge of the main body plate (1) is greater than 0.35 times the radius of the mounting hole (11) and less than 0.42 times the radius of the mounting hole (11).

4. A durable concrete pump truck skirt valve butterfly plate according to any one of claims 1 to 3, characterized in that: The depth of the weight-reducing groove (181) is less than or equal to 0.4 times the thickness of the main body plate (1).

5. A durable concrete pump truck skirt valve butterfly plate according to claim 2 or 3, characterized in that: A transition zone (17) is formed between the weight-reducing groove (181) and the mounting hole (11), the transition zone (17) and the main force-bearing zone (16) are coplanar, and the minimum width of the transition zone (17) is greater than 0.4 times the radius of the mounting hole (11).

6. The durable concrete pump truck skirt valve butterfly plate according to claim 5, characterized in that: A mounting thread groove (15) is provided on one side of the mounting surface (18) of the main body plate (1), the mounting thread groove (15) is located in the transition area (17) or the main force-bearing area (16), and the depth of the mounting thread groove (15) is less than the thickness of the main body plate (1).

7. The durable concrete pump truck skirt valve butterfly plate according to claim 6, characterized in that: The main body plate (1) is integrally cast.

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