Concrete delivery pump piston with self-lubricating structure
A concrete delivery pump and self-lubricating technology, which is applied to the parts of the pumping device for elastic fluid, pump elements, variable capacity pump parts, etc., can solve the problems of difficulty in lubricating fluid injection, etc., to ensure correctness and Reliability, effect of improving work efficiency and service life
Inactive Publication Date: 2013-02-13
上海鸿得利重工有限公司
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AI Technical Summary
Problems solved by technology
The second way is that due to the randomness of the concrete piston movement, it is often difficult to inject the lubricating fluid into the piston surface correctly.
Method used
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Embodiment Construction
[0013] According to attached figure 1 , a concrete delivery pump piston with a self-lubricating structure in the present invention, a micro-water pump is arranged in the central axis hole of the piston body 3 at the front end of the piston rod of the main oil cylinder, and the piston push rod 7 at the right end of the micro-water pump is connected with the connecting flange 8 The main oil cylinder piston rod 9 is connected as a whole. The left half of the piston push rod 7 is covered with a spring 4, and a cylinder is also provided outside the spring 4. The inner chamber of the cylinder is the water storage chamber of the miniature water pump, and the upper side wall in the middle of the cylinder is provided with a passage through the small liquid suction hole 6. The mouth of the liquid suction hole is aligned with the inclined liquid suction hole 6 on the piston body 3, and the liquid suction hole 6 communicates with the liquid supply container outside the piston body 3. Whe...
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Abstract
The invention discloses a concrete delivery pump piston with a self-lubricating structure. The concrete delivery pump piston is characterized in that a mini-type water pump is arranged in a center axial hole of a piston body which is arranged at the front end of a main oil cylinder piston rod, a piston push rod at the right end of the mini-type water pump is connected with the main oil cylinder piston rod into a whole through a connecting flange, the left half part of the piston push rod is sleeved with a spring which is externally provided with a cylinder body, an inner cavity of the cylinder body is a water storage cavity of the mini-type water pump, the upper side wall at the middle part of the cylinder body is provided with a through opening of a liquid absorbing small hole, the through opening of the liquid absorbing small hole is aligned to the liquid absorbing small hole which is obliquely arranged in the piston body, and the liquid absorbing small hole is communicated with a liquid supplying container outside the piston rod. When the piston push rod moves rightwards, the through opening of the liquid absorbing small hole is aligned to the liquid absorbing small hole under the action of the spring; and the left end part of the piston push rod is connected with a one-way valve, the piston body under the one-way valve is provided with a plurality of liquid supplying small holes, water entering into the one-way valve from the liquid absorbing small hole can be injected to the outer surface of the piston body through the liquid supplying small holes in one way in a back and forth movement process of the main oil cylinder piston rod.
Description
technical field [0001] The present invention relates to a concrete delivery pump (concrete delivery pump or concrete pump for short), in particular discloses a concrete delivery pump piston with a self-lubricating structure, which is suitable for various types of concrete delivery pumps, such as towed concrete pumps, Vehicle-mounted concrete pumps and arm-mounted concrete pumps, etc. Background technique [0002] At present, concrete pumps have been widely used in construction sites at home and abroad. The number of various types of concrete pumps in China is roughly estimated to be tens of thousands, and each concrete pump needs two concrete pistons. The concrete piston and the concrete cylinder are always in the sliding friction state of the arc surface of the garden. [0003] At present, all kinds of concrete pumps use the following two methods to lubricate the cylinder wall and piston: [0004] 1. Use the way of water infiltration between the cylinder wall of the concr...
Claims
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Inventor 傅家桢赵小波
Owner 上海鸿得利重工有限公司