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CN-117680642-B - Nodular cast iron pipe centrifuge protection component

CN117680642BCN 117680642 BCN117680642 BCN 117680642BCN-117680642-B

Abstract

The invention belongs to protection equipment for spheroidal graphite cast iron pipe production, and particularly relates to a spheroidal graphite cast iron pipe centrifuge protection assembly, which comprises a centrifuge, a centrifuge base, a centrifuge rail, a centrifuge walking driving device, and a protection assembly arranged between the centrifuge and the centrifuge rail, wherein the protection assembly comprises a fixing frame, a connecting part, a protection rail, a protection trolley and a protection plate, an included angle of not more than 5 degrees is arranged between the protection rail and the horizontal ground, and the included angle enables the protection trolley to naturally move in the descending direction of the centrifuge under the non-driving state.

Inventors

  • TAN HEQING
  • YAN BINBIN
  • WANG SONG
  • XI JIE
  • DU PENGYUAN

Assignees

  • 新兴河北工程技术有限公司

Dates

Publication Date
20260512
Application Date
20231206

Claims (7)

  1. 1. A ductile iron pipe centrifuge shield assembly comprising: A centrifuge (100) which is a centrifugal casting device for producing the spheroidal graphite cast iron pipe; A centrifuge base (110) fixed to a support frame or a support base on the lower side of the centrifuge (100); A centrifuge rail (120) disposed on the centrifuge base (110), wherein the centrifuge (100) performs up-and-down reciprocating motions along the centrifuge rail (120); the centrifugal machine walking driving device (200) is positioned at the lower side of the centrifugal machine (100) and is used for driving the centrifugal machine (100) to move; The centrifugal machine is characterized by further comprising a protection assembly (300) arranged between the centrifugal machine (100) and the centrifugal machine track (120), wherein the protection assembly (300) comprises: The fixing frame (310) is a plate-shaped frame body, the thickness of the fixing frame is smaller than the gap between the centrifugal machine (100) and the centrifugal machine track (120), and the fixing frame is positioned at the lower side of the centrifugal machine (100) and close to one end of the centrifugal machine (100) in the descending direction; The connecting part (320) is positioned at the upper part of the fixing frame (310) and fixedly connects the fixing frame (310) with the centrifugal machine (100); A protection rail (330) arranged on the fixing frame (310) and extending along the running direction of the centrifugal machine (100); The protection trolley (340) is arranged on the protection track (330), and the protection track (330) constrains the protection trolley (340) to reciprocate along the running direction of the centrifugal machine (100); The protection plate (350) is fixedly connected with the protection trolley (340) towards the descending direction of the centrifugal machine (100) and protrudes out of the body of the protection trolley (340); The protection track (330) is provided with an end limit (360) at the end part of the centrifuge (100) in the descending direction, and the end limit (360) limits the protection trolley (340) body to be separated from the protection track (330); An included angle of not more than 5 degrees is arranged between the protection track (330) and the horizontal ground, and the included angle enables the protection trolley (340) to naturally move towards the descending direction of the centrifugal machine (100) in a non-driving state.
  2. 2. The ductile iron pipe centrifuge protection assembly according to claim 1 characterized in that the centrifuge rail (120) is provided with a downward angle towards the downstream direction of the centrifuge (100), the protection rail (330) being parallel to the centrifuge rail (120).
  3. 3. The ductile iron pipe centrifuge protection assembly according to claim 1 wherein the angle between the protection track (330) and horizontal ground is 2.75 °.
  4. 4. The ductile iron pipe centrifuge protection assembly according to claim 1 wherein the protection track (330) is two C-shaped tracks arranged in opposite directions, the protection trolley (340) being embedded inside the C-shaped tracks.
  5. 5. The ductile iron pipe centrifuge protection assembly according to claim 1, wherein an uplink limit (370) is fixedly arranged on the centrifuge rail (120) or the centrifuge base (110), the uplink limit (370) is positioned on a movement track of the protection trolley (340), and the protection trolley (340) is limited to move continuously and retract into the fixing frame (310) by inertia when the centrifuge (100) reaches an uplink limit position.
  6. 6. The ductile iron pipe centrifuge protection assembly according to claim 1, wherein a down limit (380) is fixedly arranged on the centrifuge rail (120) or the centrifuge base (110), the down limit (380) is positioned on a movement track of the protection trolley (340) and is matched with an end of the protection plate (350), and when the down limit (380) limits the centrifuge (100) to a down limit position, the protection plate (350) continues to extend out of the protection rail (330) to interfere with a tube drawing device by inertia.
  7. 7. The ductile iron pipe centrifuge protection assembly according to claim 1 characterized in that the fixing frame (310) is provided with an outwardly extending expansion plate (390) at the end of the centrifuge (100) in the downstream direction, the expansion plate (390) extending beyond the end of the centrifuge (100) and in a direction perpendicular to the centrifuge rail (120).

Description

Nodular cast iron pipe centrifuge protection component Technical Field The invention belongs to protective equipment for production of spheroidal graphite cast iron pipes, and particularly relates to a spheroidal graphite cast iron pipe centrifugal machine protective component. Background Centrifugal casting is a technique and method of injecting liquid metal into a mold that rotates at high speed, causing the molten metal to perform centrifugal motion to fill the mold and form a casting. The centrifugal motion makes the liquid metal fully fill the casting mould in radial direction and form the free surface of the casting, and the cylindrical inner hole can be obtained without using the core, thereby facilitating the removal of gas and impurities in the liquid metal, affecting the crystallization process of the metal and improving the mechanical property and physical property of the casting. In the field of nodular cast iron pipe production, centrifugal casting technology is often adopted to finish product production. In the production process of the small and medium caliber ductile cast iron pipe, a water-cooling centrifugal pipe casting machine is generally adopted, a main machine of the centrifugal machine moves back and forth along a track at the present stage, a chute goes deep into the main machine, centrifugal casting is completed in the process that the main machine gradually withdraws, pipe drawing equipment stretches into the main machine from the other end after casting is completed, pipe drawing action is completed, and the drawn cast pipe enters the next flow. The inventor finds that during casting and tube drawing, some rows of impurities are generated, which are usually sand in the process of centrifugal casting iron casting, tube drawing, and bouncing out or breaking cores, if the impurities are on a transmission mechanism of equipment for driving a centrifugal machine for a long time, the transmission mechanism is damaged or unstable, and the transmission mechanism is generally extended from the lower part to be connected with a tube casting machine and also has to move along with the tube casting machine, so that the movement space cannot be interfered, and the equipment is not necessarily sealed completely. The inventor creatively discovers the problem through a large amount of observation, but the problem cannot be solved by the traditional timely means. There is a need for a protective device for a graphite cast iron pipe centrifuge transmission. Disclosure of Invention In order to overcome the influence of impurities on a centrifugal machine in the prior art, the inventor designs protective equipment capable of unpowered stretching in a narrow space between the centrifugal machine and a centrifugal machine track, and prevents the influence of the impurities on a transmission mechanism. The invention adopts the technical scheme that the protection component of the spheroidal graphite cast iron pipe centrifugal machine comprises the following components: the centrifugal machine is centrifugal casting equipment for producing the spheroidal graphite cast iron pipe; The centrifugal machine base is fixed on a support frame or a support base at the lower side of the centrifugal machine; The centrifugal machine rail is arranged on the rail on the centrifugal machine base, and the centrifugal machine performs up-and-down reciprocating motion along the centrifugal machine rail; the centrifugal machine walking driving device is positioned at the lower side of the centrifugal machine and used for driving the centrifugal machine to move; The centrifugal machine further comprises a protection component arranged between the centrifugal machine and the centrifugal machine track, wherein the protection component comprises: The fixing frame is a plate-shaped frame body, the thickness of the fixing frame is smaller than the gap between the centrifugal machine and the centrifugal machine track, and the fixing frame is positioned at the lower side of the centrifugal machine and close to one end of the centrifugal machine in the descending direction; The connecting part is positioned at the upper part of the fixing frame and is used for fixedly connecting the fixing frame and the centrifugal machine; The protection rail is arranged on the fixing frame and is a linear rail extending along the running direction of the centrifugal machine; The protection trolley is arranged on the protection track, and the protection track is used for restraining the protection trolley to reciprocate along the running direction of the centrifugal machine; the protection plate is fixedly connected to the protection trolley towards the descending direction of the centrifugal machine and protrudes out of the protection trolley body; The end part of the protection track in the descending direction of the centrifugal machine is provided with an end part limit, and the end part limit limits the protection trolley body to be separate