Title:
S-SHAPED GATE VALVE SLIDING SURFACE CLOSE-CONTACT DEVICE FOR CONCRETE PUMP
Document Type and Number:
Japanese Patent JP3145488
Kind Code:
B2
Abstract:
PURPOSE: To improve forced feed performance by interposing a hydraulic cylinder which adjusts the contact angle of a sliding plate with a sliding ring between a concrete cylinder and a gate housing, and holding the contact surfaces of the sliding plate and the sliding ring in parallel to each other for mutual close contact.
CONSTITUTION: A sliding plate 7 is installed at a housing 4 on concrete cylinders 1, 1' side in a concrete pump. Besides, a sliding ring 8 is installed at an S-shaped pipe 6. Moreover, the S-shaped pipe 6 is swingably supported on a gate housing. In addition, the housing 4 and the gate housing 5 are connected to each other through a pivoted part 3. With this constitution, a hydraulic cylinder 16 which adjusts a contact angle α1 of the sliding plate 7 with the sliding ring 8 is installed between concrete cylinders 1, 1' and the gate housing 5. It is thus possible to adjust the contact angle α1 according to the deflection angle α2 of the S-shaped pipe 6, and maintain the contact surfaces of the sliding plate 7 and the sliding ring 8 is parallel to each other, for mutual close contact.
Inventors:
Yoshiaki Inada
Take Saki Toshio
Take Saki Toshio
Application Number:
JP18385292A
Publication Date:
March 12, 2001
Filing Date:
July 10, 1992
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
F04B15/02; F04B7/00; (IPC1-7): F04B15/02
Attorney, Agent or Firm:
Koharu Fujita (3 outside)
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