Concrete pumping equipment and piston body thereof

Abstract

The invention discloses a piston body used for concrete pumping equipment. The piston body includes a main body part (2) connected with a piston rod of the concrete pumping equipment and a sealing component (1) arranged at the front end of the main body part (2) detachably and provided with a sealing lip (1211). The sealing component (1) includes a framework part (11) with proper strength and a cladding part (12) with proper hardness. The arrangement of the framework part (11) improves the mechanical property of the sealing component (1), leads to uniform abrasion of the sealing lip (1211) and reduces the heat energy accumulated due to the deformation of the sealing lip (1211), thus further relieving the temperature rise of the sealing component (1) caused by the heat energy, avoiding the problem of early failure caused by the situation that the working temperature of the sealing component (1) exceeds the normal use temperature, prolonging the service life of the sealing component of the piston body and enhancing the economical efficiency of the piston body in use process.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a piston body used for concrete pumping equipment. In addition, the present invention also relates to a concrete pumping equipment comprising the above-mentioned piston body. Background technique [0002] With the rapid development of my country's economic construction and the increasing number of construction projects, the market demand for concrete equipment is also increasing. [0003] The piston is a key component in concrete pumping equipment, and the piston body is a key component of the piston. Therefore, the performance of the piston body directly affects the performance of the piston, which in turn affects the performance of the concrete pumping equipment. [0004] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a typical piston body in the prior art. [0005] Such as figure 1 As shown, the piston body includes a supporting ...

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Problems solved by technology

[0006] During the working process, the piston body reciprocates along the axis of the piston in the piston cylinder, and its working environment is very harsh. The high pressure of 30MPa and the working temperature above -40°C to 100°C have been soaked in mud water for a long time, and during the movement of the piston body relative to the piston cylinder, the covering part 2' of the piston body is always worn, The service life of the piston body is shortened

[0007]In addition, during the working process, the friction between the piston body and the piston cylinder and the deformation of the cladding part 1' will generate a large amount of heat energy, which will easily cause the cladding The operating temperature of the cladding part 1' exceeds its normal service temperature

Although the existence of the skeleton part 2' can enhance the rigidity of the piston body as a whole, improve the overall mechanical properties of the piston body, thereby reducing the deformation of the cladding part 1' of the piston body, reducing its working temperature, and prolonging the piston body to a certain extent. However, the improvement effect of the skeleton part 2' on the mechanical properties of the sealing part 1'1 which plays a sealing role and wears the most seriously is relatively weak. Therefore, the sealing part 1'1, especially the sealing part 1'1 The sealing lip is easy to wear, which seriously affects the service life of the sealing parts 1'1 of the piston body

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