Concrete piston structure for concrete pump

Abstract

The utility model discloses a concrete piston structure for a concrete pump, and particularly relates to the technical field of concrete pumps, the concrete piston structure comprises a concrete piston body, a through hole is formed in the middle of the interior of the concrete piston body, and grooves are formed in the two sides of the concrete piston body; clamping strips are arranged on the four sides of one end of the piston rod, clamping grooves are formed in the four ends of the inner wall of the through hole, the clamping strips are matched with the clamping grooves, cavity grooves are formed in the middles of the inner sides of the clamping grooves, and elastic pieces are arranged in the cavity grooves. By arranging the clamping strip and the clamping groove, the tightness between the piston rod and the concrete piston body can be greatly enhanced, and the clamping strip can be further clamped in the clamping groove by arranging the limiting block, the spring, the cavity groove and the limiting groove between the clamping strip and the clamping groove, so that the connection strength between the piston rod and the concrete piston body can be greatly enhanced; the piston rod is not prone to slipping in the concrete piston body, so that stable connection of the concrete piston body is achieved, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete pumps, in particular to a concrete piston structure for a concrete pump. Background Art

[0002] A concrete pump is a machine that uses pressure to continuously transport concrete along a pipeline. It consists of a pump body and a delivery pipe. Structural types include piston, extrusion, and hydraulic diaphragm types. The pump body is mounted on a vehicle chassis and equipped with a retractable or flexible boom to form a pump truck. The concrete piston, or concrete pump piston, supports the piston against the inner wall of the cylinder.

[0003] At present, the structure of concrete pistons is mostly ring-shaped. During installation, the piston rod is usually directly inserted into the concrete piston and then fixed with flange bolts. However, in actual application, the piston rod is easy to slip in the concrete piston, and the simple plug-in leads to poor connection strength between them, making it difficult to effectively ensure the stability of the piston rod inserted in the concrete piston, resulting in poor use effect. Utility Model Content

[0004] The purpose of the utility model is to provide a concrete piston structure for a concrete pump, which can greatly enhance the tightness between the piston rod and the concrete piston body by arranging a clamping strip and a clamping groove, and can further clamp the clamping strip in the clamping groove by arranging a limit block, a spring, a cavity groove and a limit groove between the clamping strip and the clamping groove, thereby greatly enhancing the connection strength between the piston rod and the concrete piston body, making it difficult for the piston rod to slip in the concrete piston body, thereby achieving a stable connection of the concrete piston body, and having a better use effect, so as to solve the above-mentioned shortcomings in the technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a concrete piston structure for a concrete pump, comprising:

[0006] A concrete piston body, wherein a through hole is provided in the middle of the concrete piston body and grooves are provided on both sides of the concrete piston body;

[0007] The piston rod has a clamping strip on all four sides of one end of the piston rod, and a clamping slot is provided on the four ends of the inner wall of the through hole. The clamping strip matches the clamping slot, and a cavity is provided in the middle of the inner side of the clamping slot. An elastic member is provided inside the cavity, and one end of the elastic member is connected to a limiting block, and the end of the limiting block extends into the clamping slot. A limiting groove matching the limiting block is provided on the outer wall of the clamping strip.

[0008] Preferably, the elastic member includes a spring fixed at one end inside the cavity, one end of the spring is connected to a stopper, the stopper is fixedly connected to the limit block, and one end of the stopper is connected to a disassembly member.

[0009] Preferably, the disassembly part includes an L-shaped slide groove opened on the inner side of the groove and communicated with the cavity groove at four ends. A positioning column is embedded in the L-shaped slide groove, and one end of the positioning column is fixedly connected to the stop block.

[0010] Preferably, the limiting block is semicircular.

[0011] Preferably, a rubber ring is embedded in the groove.

[0012] Preferably, a plurality of cavities are formed on the inner wall of the through hole, and the cavities are T-shaped.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] By providing the clamping strip and the clamping groove, the tightness between the piston rod and the concrete piston body can be greatly enhanced, and by providing a limit block, a spring, a cavity groove and a limit groove between the clamping strip and the clamping groove, the clamping strip can be further clamped in the clamping groove, thereby greatly enhancing the connection strength between the piston rod and the concrete piston body, making it difficult for the piston rod to slip in the concrete piston body, thereby achieving a stable connection with the concrete piston body and having a better use effect;

[0015] Moreover, by providing a disassembly part, the positioning column on the disassembly part is moved in the L-shaped slide groove by using a tool, so that the clamping limit between the card strip and the card groove can be released, thereby facilitating disassembly and maintenance, and greatly improving the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a structural diagram of the concrete piston body and the rubber ring being separated in the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the piston rod of the utility model;

[0020] Figure 4 This is one of the longitudinal cross-sectional views of the concrete piston body of the utility model;

[0021] Figure 5 This is the second longitudinal sectional view of the concrete piston body of the utility model.

[0022] Description of reference numerals:

[0023] 1. Concrete piston body; 2. Groove; 3. Rubber ring; 4. Through hole; 5. Piston rod; 6. Slot; 7. Clip strip; 8. Limit block; 9. Limit groove; 10. Cavity groove; 11. Spring; 12. Stop block; 13. L-shaped slide; 14. Positioning column; 15. Cavity. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] The utility model provides Figure 1-Figure 5 A concrete piston structure for a concrete pump shown includes:

[0026] A concrete piston body 1, a through hole 4 is provided in the middle of the concrete piston body 1, and grooves 2 are provided on both sides of the concrete piston body 1;

[0027] The piston rod 5 has a clamping strip 7 on all four sides of one end of the piston rod 5. The inner wall of the through hole 4 has a clamping groove 6 at all four ends. The clamping strip 7 matches the clamping groove 6. A cavity 10 is provided in the middle of the inner side of the clamping groove 6. An elastic member is provided inside the cavity 10. One end of the elastic member is connected to a limiting block 8, and the end of the limiting block 8 extends into the clamping groove 6. A limiting groove 9 matching the limiting block 8 is provided on the outer wall of the clamping strip 7.

[0028] The limiting block 8 is semicircular.

[0029] The elastic member includes a spring 11 fixed at one end inside the cavity 10 , one end of the spring 11 is connected to a stopper 12 , the stopper 12 is fixedly connected to the limit block 8 , and one end of the stopper 12 is connected to a disassembly member.

[0030] The disassembly part includes an L-shaped slide 13 opened on the inner side of the groove 2 and communicating with the cavity 10 at four ends. A positioning column 14 is embedded in the L-shaped slide 13, and one end of the positioning column 14 is fixedly connected to the stopper 12.

[0031] When in use, the end of the piston rod 5 can be inserted into the through hole 4, and the card strip 7 and the card slot 6 can be plugged into and matched with each other, thereby greatly strengthening the tightness between the piston rod 5 and the concrete piston body 1. At the same time, when plugging in, the piston rod 5 can squeeze the limit block 8, so that the limit block 8 drives the stop block 12 to squeeze the spring 11, and then the limit block 8 is retracted into the cavity 10. After the card strip 7 and the card slot 6 are plugged in, the limit block 8 can be reset and rebound into the limit groove 9 under the rebound of the spring 11, so that the card strip 7 can be further clamped in the card slot 6, thereby greatly strengthening the connection strength between the piston rod 5 and the concrete piston body 1, making it difficult for the piston rod 5 to slip in the concrete piston body 1. Finally, it is fixed with the flange bolts to achieve a stable connection of the concrete piston body 1, and the use effect is better.

[0032] In addition, by setting up a disassembly part, the positioning column 14 on the disassembly part can be moved in the L-shaped slide groove 13 by using a tool, so that the positioning column 14 can drive the stop block 12 to move and squeeze the spring 11, so that the stop block 12 drives the limit block 8 to retreat into the cavity 10 to release the limit, thereby facilitating disassembly and maintenance, and greatly improving the use effect.

[0033] A rubber ring 3 is embedded in the interior of the groove 2. By embedding the rubber ring 3 in the groove 2, the sealing performance can be improved.

[0034] A plurality of cavities 15 are defined on the inner wall of the through hole 4 , and the cavities 15 are T-shaped.

[0035] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A concrete piston structure for a concrete pump, characterized in that: include: A concrete piston body (1), wherein a through hole (4) is provided in the middle of the concrete piston body (1), and grooves (2) are provided on both sides of the concrete piston body (1); A piston rod (5), wherein a clamping strip (7) is provided on four sides of one end of the piston rod (5), a clamping groove (6) is provided on four ends of the inner wall of the through hole (4), the clamping strip (7) matches the clamping groove (6), a cavity (10) is provided in the middle of the inner side of the clamping groove (6), an elastic member is provided inside the cavity (10), one end of the elastic member is connected to a limiting block (8), and the end of the limiting block (8) extends into the clamping groove (6), and a limiting groove (9) matching the limiting block (8) is provided on the outer wall of the clamping strip (7).

2. A concrete piston structure for a concrete pump according to claim 1, characterized in that: The elastic member comprises a spring (11) fixed at one end inside the cavity (10), one end of the spring (11) is connected to a stopper (12), the stopper (12) is fixedly connected to the limit block (8), and one end of the stopper (12) is connected to a disassembly member.

3. A concrete piston structure for a concrete pump according to claim 2, characterized in that: The disassembly part comprises an L-shaped slide groove (13) with four ends opened on the inner side of the groove (2) and communicating with the cavity groove (10); a positioning column (14) is embedded in the L-shaped slide groove (13); and one end of the positioning column (14) is fixedly connected to the stopper (12).

4. The concrete piston structure for a concrete pump according to claim 1, characterized in that: The limiting block (8) is semicircular.

5. The concrete piston structure for a concrete pump according to claim 1, characterized in that: A rubber ring (3) is embedded in the interior of the groove (2).

6. The concrete piston structure for a concrete pump according to claim 1, characterized in that: The inner wall of the through hole (4) is provided with a plurality of cavities (15), and the cavities (15) are T-shaped.

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