阅读说明：本技术 一种气动式铸铁管离心铸造机模具制动装置 (Pneumatic brake device for centrifugal casting machine of cast iron pipe ) 是由 支喜发 原相杰 刘烨 郝庆文 于 2020-06-19 设计创作，主要内容包括：本发明公开了一种气动式铸铁管离心铸造机模具制动装置,包括制动金属块、制动传动部分以及制动动力部分,制动传动部分的一端与制动金属块连接,另一端与制动动力部分连接；制动传动部分包括传动杠杆和杠杆支座,传动杠杆通过销轴安装在杠杆支座上,传动杠杆为“∟”形结构,包括一体化成型的水平杆和竖直杆,竖直杆的自由端与位于其上部的制动金属块固定连接；制动动力部分包括带耳轴气缸和气缸支座,带耳轴气缸的上端通过销轴安装在传动杠杆的水平杆尾部的耳板上,带耳轴气缸通过其耳轴与气缸支座连接。本发明可对高速旋转的铸管模具进行有针对性的、简单高效的制动,降低了铸管模具关键部位的磨损,延长了铸管模具的使用寿命。(The invention discloses a pneumatic type cast iron pipe centrifugal casting machine mould braking device which comprises a braking metal block, a braking transmission part and a braking power part, wherein one end of the braking transmission part is connected with the braking metal block, and the other end of the braking transmission part is connected with the braking power part; the master lever is in a L-shaped structure and comprises an integrally formed horizontal rod and a vertical rod, and the free end of the vertical rod is fixedly connected with a brake metal block positioned on the upper part of the vertical rod; the brake power part comprises a cylinder with a trunnion and a cylinder support, the upper end of the cylinder with the trunnion is arranged on an ear plate at the tail part of a horizontal rod of the transmission lever through a pin shaft, and the cylinder with the trunnion is connected with the cylinder support through the trunnion. The invention can brake the high-speed rotating cast tube die in a targeted, simple and efficient manner, reduces the abrasion of key parts of the cast tube die and prolongs the service life of the cast tube die.)

1. The utility model provides a pneumatic type cast iron pipe centrifugal casting machine mould arresting gear which characterized in that: the brake device comprises a brake metal block, a brake transmission part and a brake power part, wherein the brake metal block is used for directly acting on the outer surface of a cast pipe die to brake the cast pipe die;

the brake transmission part comprises a transmission lever and a lever support, the transmission lever is arranged on the lever support through a pin shaft, and the transmission lever isThe shape structure comprises a horizontal rod and a vertical rod which are integrally formed, wherein the free end of the vertical rod is fixedly connected with a brake metal block positioned on the upper part of the vertical rod;

the braking power part comprises a cylinder with a trunnion and a cylinder support, the upper end of the cylinder with the trunnion is arranged on an ear plate at the tail part of a horizontal rod of the transmission lever through a pin shaft, power is provided for braking of the cast tube mold, and the cylinder with the trunnion is connected with the cylinder support through the trunnion.

2. The braking device for the mould of the pneumatic centrifugal casting machine for cast iron pipes as claimed in claim 1 is characterized in that: the pneumatic brake device for the cast iron pipe centrifugal casting machine die is arranged on one side of a main machine motor of the cast iron pipe centrifugal casting machine, and when the main machine part finishes a pouring process, the friction brake is directly carried out on the cast iron pipe die.

3. The braking device for the mould of the pneumatic centrifugal casting machine for cast iron pipes as claimed in claim 1 is characterized in that: the lever support is fixed on a preset foundation of a centrifugal casting equipment main machine through anchor screws, so that the transmission lever direction is vertical to the cast tube die, and a fulcrum is provided for the whole braking lever action.

4. The braking device for the mould of the pneumatic centrifugal casting machine for cast iron pipes as claimed in claim 1 is characterized in that: the length direction of the transmission lever horizontal rod and the length direction of the vertical rod form a 90-degree right angle, and the length of the horizontal rod is larger than that of the vertical rod.

5. The braking device for the mould of the pneumatic centrifugal casting machine for cast iron pipes as claimed in claim 1 is characterized in that: the distance between the cylinder with the trunnion and the lever support is far larger than the distance between the brake metal block and the lever support, so that the force born by the cylinder with the trunnion in the braking process can be reduced.

6. The braking device for the mould of the pneumatic centrifugal casting machine for cast iron pipes as claimed in claim 1 is characterized in that: the cylinder support is fixed on the preset foundation of the centrifugal casting equipment host by anchor screws, and is fixed for the cylinder with the trunnion, and the cylinder with the trunnion can rotate at an angle with the trunnion as the circle center on the cylinder support due to the fixed characteristic of the trunnion.

7. The braking device for the mould of the pneumatic centrifugal casting machine for cast iron pipes as claimed in claim 1 is characterized in that: the cylinder with the trunnion is used for receiving an electric signal from a master control system by an electromagnetic valve connected to an integral control circuit of the centrifugal casting equipment to control the cylinder to timely stretch and contract, and the integral process of the centrifugal casting equipment is matched to brake a casting pipe mold.

Technical Field

The invention belongs to the technical field of cast iron pipe centrifugal casting equipment, and particularly relates to a pneumatic brake device for a cast iron pipe centrifugal casting machine die.

Background

The traditional braking device of the centrifugal casting equipment for the cast iron pipe is an electromagnetic band-type braking equipment aiming at a belt pulley of a main machine motor, and the braking equipment has the following defects:

1. the band-type brake mode is that the band-type brake acts on a motor belt pulley, so that the rotating speed of the driving riding wheel is reduced, and then the speed is reduced through friction between the driving riding wheel at low speed and the cast tube die rotating at high speed. However, the friction part between the driving riding wheel and the cast tube mould is the roller way part of the cast tube mould, and long-term friction can cause stress damage on the surface of the cast tube mould, so that axial runout of the mould in a high-speed rotating 'pouring' state is aggravated, the service lives of equipment and the mould are shortened, and the quality of a centrifugal cast tube is indirectly influenced.

2. The effective mechanism of the electromagnetic band-type brake has higher conduction loss, more complex structure and more complicated field debugging.

3. The cast iron pipe centrifugal casting field environment is severe, high temperature and high humidity are achieved, and hidden danger exists in stability of operation effect of an electromagnetic band-type brake mechanism caused by metal powder.

Disclosure of Invention

In view of the above, the present invention provides a pneumatic mold braking device for a centrifugal casting machine of cast iron pipes, which has a simple structure, stable operation, strong operability, and low energy consumption, so as to solve the above-mentioned disadvantages of the conventional electromagnetic band-type braking device.

In order to achieve the purpose of the invention, the technical scheme is as follows:

a pneumatic brake device for a cast iron pipe centrifugal casting machine mould comprises a brake metal block, a brake transmission part and a brake power part, wherein the brake metal block is used for directly acting on the outer surface of the cast iron pipe mould to brake the cast iron pipe mould; the brake metal block directly contacts with the outer surface of the cast tube mold in a braking action and generates friction to reduce the special supply speed of the cast tube mold, the brake transmission part plays a force transmission role in the braking action, and the brake power part is used for providing power for the braking action of the mold;

the L-shaped brake device comprises a brake transmission part, a brake transmission part and a brake part, wherein the brake transmission part comprises a transmission lever and a lever support, the transmission lever is arranged on the lever support through a pin shaft, the transmission lever and the lever support are connected through a pin shaft structure, the structure is reliable, and meanwhile, the requirement that the lever structure can be pried is met, the transmission lever is in a L-shaped structure and comprises a horizontal rod and a vertical rod which are integrally formed, and the free end of the vertical rod is fixedly connected with a brake metal block positioned on the upper part of the vertical rod;

the braking power part comprises a cylinder with a trunnion and a cylinder support, the upper end of the cylinder with the trunnion is arranged on an ear plate at the tail part of a horizontal rod of the transmission lever through a pin shaft, power is provided for braking of the cast tube mold, and the cylinder with the trunnion is connected with the cylinder support through the trunnion.

Preferably, the pneumatic braking device for the centrifugal casting machine die for the cast iron pipe is arranged on one side of a main machine motor of the centrifugal casting machine for the cast iron pipe, and the main machine part directly performs friction braking on the cast iron pipe die after a pouring process is completed.

Preferably, the lever support is fixed on a preset foundation of the centrifugal casting equipment main machine through anchor screws, so that the transmission lever direction is perpendicular to the cast tube die, and a 'fulcrum' is provided for the whole braking lever action.

Preferably, the length direction of the horizontal rod of the transmission lever and the length direction of the vertical rod are at a 90-degree right angle, and the length of the horizontal rod is larger than that of the vertical rod.

Preferably, the distance between the cylinder with the trunnion and the lever support is far larger than the distance between the brake metal block and the lever support, so that the force to be born by the cylinder with the trunnion during the braking process can be reduced.

Preferably, the cylinder support is fixed on the preset foundation of the centrifugal casting equipment host by anchor screws, and the cylinder with the trunnion is fixed.

Preferably, the electromagnetic valve connected to the overall control circuit of the centrifugal casting equipment is used for receiving an electric signal from the master control system to control the cylinder to timely stretch and contract, and the overall process of the centrifugal casting equipment is matched to brake the casting pipe mold.

The invention has the beneficial effects that: the electric brake device drives the transmission lever to complete the braking action by the air cylinder with the trunnion controlled by the electric signal, has simple structure and strong operability, and is convenient for debugging and daily maintenance; the braking action directly acts on the pipe casting die, the action mechanism is efficient and reliable, and the integral operation efficiency and stability of the centrifugal pipe casting device are greatly improved; the brake metal block does not need to be worried about overhigh temperature caused by high-speed friction with the outer wall of the cast tube mold, and the brake metal block and the cast tube mold are cooled together before the tube drawing process; compared with the traditional electromagnetic band-type brake equipment, the brake equipment does not act with a roller way of the cast tube mould, the service life of the cast tube mould is prolonged, and the quality of the produced cast tube is indirectly improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.