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CN-122007854-A - Assembling device for air valve

CN122007854ACN 122007854 ACN122007854 ACN 122007854ACN-122007854-A

Abstract

The invention discloses an assembling device for an air valve, which solves the problem of pressure loss caused by easy skew placement of an air valve seat during assembling, and comprises a pressure head cylinder arranged on a workbench and a pressure head fixed at the lower end of the pressure head cylinder, wherein the pressure head comprises a pressure cylinder fixed at the lower end of the pressure head cylinder, a cylindrical cavity is arranged in the pressure cylinder, a round shell is movably arranged in the cylindrical cavity through a lifting mechanism, and a positioning claw mechanism for correcting the position of the valve seat is arranged on the bottom surface of the round shell; according to the invention, through the arrangement of the positioning claw mechanism, the valve seat to be assembled is lifted from the opening part of the air valve seat hole, the gravity of the valve seat is utilized to enable the valve seat to be on the plane formed by the supporting blocks, the automatic leveling of the valve seat is realized, and then the radial expansion and the abutting of the arc-shaped blocks are carried out from the inner side of the valve seat, so that the coincidence of the circle center of the valve seat and the axis of the pressure head is ensured, and the accuracy of the pressed-in position is greatly improved.

Inventors

  • Song Hourong
  • ZHANG YONGLIANG
  • GUAN CHAOYANG
  • LIU ANNAN
  • LIU XING

Assignees

  • 中远海运散货运输有限公司

Dates

Publication Date
20260512
Application Date
20260209

Claims (8)

  1. 1. An assembling device for an air valve comprises a pressure head cylinder (2) arranged on a workbench (1) and a pressure head (3) fixed at the lower end of the pressure head cylinder (2), and is characterized in that, The pressure head (3) comprises a pressure cylinder (31) fixed at the lower end of the pressure head cylinder (2), a cylindrical cavity (32) is arranged in the pressure cylinder (31), a round shell (36) is movably arranged in the cylindrical cavity (32) through a lifting mechanism (33), and a positioning claw mechanism (37) for correcting the position of a valve seat is arranged on the bottom surface of the round shell (36); The positioning pawl mechanism (37) includes: the vertical rods (371) are distributed around the circle center of the bottom surface of the round shell (36) at equal intervals; the moving mechanism (372) is connected with the round shell (36) and used for driving the plurality of vertical rods (371) to move radially on the bottom surface of the round shell (36); The supporting block (373) is fixed on the outer side of the lower end of the vertical rod (371); an arc-shaped block (374) fixed on the outer side of the lower end of the vertical rod (371) and positioned above the supporting block (373); The lower end of the pressure cylinder (31) is provided with a pressure surface (311) matched with the top end of the valve seat (5).
  2. 2. An assembling device for an air valve according to claim 1, wherein the lifting mechanism (33) is in transmission connection with a moving plate (34), the upper end of the round shell (36) is in rotary connection with the moving plate (34), and a rotary driving mechanism (35) is connected between the round shell (36) and the moving plate (34); The side face of the workbench (1) is provided with a dispensing mechanism (4).
  3. 3. An assembling device for an air valve according to claim 2, wherein the dispensing mechanism (4) comprises a first cylinder (41) fixed on the workbench (1), and a dispensing valve (42) is fixedly connected to a telescopic end of the first cylinder (41).
  4. 4. An assembling device for an air valve according to claim 1, wherein a closed cover (7) is slidably mounted on the side surface of the pressure cylinder (31) through a second air cylinder (6), a closed space is formed at the bottom of the closed cover (7) when the bottom of the closed cover is in contact with the air cylinder cover (8), and a pressurizing plate (312) which is slidably matched with the inner wall of the closed cover (7) is integrally formed on the side surface of the pressure cylinder (31); The side surface of the cylindrical cavity (32) is provided with an exhaust hole (321) in a penetrating mode.
  5. 5. An assembly device for an air valve according to claim 4, characterized in that the sealing rings are fixed to the bottom of the enclosure (7) and to the sides of the pressure plate (32), and that the pressure relief valve (9) is mounted to the sides of the enclosure (7).
  6. 6. The assembly device for an air valve according to claim 1, wherein the moving mechanism (372) comprises a plurality of sliding rails (3721) fixed on the bottom surface of the circular shell (36) along the radial direction, a sliding block (3722) is slidably arranged in the sliding rails (3721), and the upper end of the vertical rod (371) is fixedly connected with the sliding block (3722); The inside of circle shell (36) is fixed with motor (3723), the output shaft of motor (3723) runs through the bottom of circle shell (36) and the side is fixed with crank (3724), one end of connecting rod (3725) is connected in crank (3724) rotation, the other end of connecting rod (3725) with slider (3722) rotation is connected.
  7. 7. An assembling device for an air valve according to claim 1, wherein a frame (10) is fixed on the surface of the workbench (1), a longitudinal adjusting mechanism (11) is installed at the upper end of the frame (10), a transverse adjusting mechanism (12) is installed at the longitudinal adjusting mechanism (11), and the upper end of the pressure head cylinder (2) is in transmission connection with the transverse adjusting mechanism (12).
  8. 8. An assembly device for an air valve according to claim 1, characterized in that the number of said vertical bars (371) is 3.

Description

Assembling device for air valve Technical Field The invention relates to the technical field of air valve assembly, in particular to an assembly device for an air valve. Background Diesel engines are used as the main power source of ships, and the cylinders are usually provided with an air inlet valve and an air outlet valve, which are respectively responsible for air inlet and exhaust gas discharge. At present, the valve body of the exhaust valve adopts a casting structure so as to replace and maintain when the valve seat is worn. The existing exhaust valve seat and valve body are usually installed in a cold press interference fit mode, for example, when the device is used, an operator pushes the cylinder cover to the surface of a press mounting platform, after the cylinder cover is fixed, the valve seat cooled by liquid nitrogen is manually placed in an air valve seat hole, then a working pressure head is moved to a corresponding position, and the working pressure head is pushed by a pressure head cylinder to automatically lower and mount the valve seat. For the existing assembly technology, at least the following defects exist: 1. As shown in fig. 3, since the valve seat 5 is in interference fit with the air valve seat hole 81, the diameter of the valve seat 5 is larger than that of the air valve seat hole 81, and in order to prevent the problems of gnawing and galling in the assembly process, the mouth of the air valve seat hole 81 is generally rounded in a flare shape, so that the valve seat 5 is conveniently guided into the air valve seat hole 81, and thus, the valve seat 5 is easy to be put askew at the orifice when being manually placed. If the valve seat 5 is easily damaged by direct pressing, and if the deviation is corrected from the outside by using a conventional clamping plate, the bottom of the valve seat 5 is easy to interfere with the position of the orifice, and the clamping force can generate a pressing component force, so that the clamping is aggravated, and the effective centralizing cannot be realized. 2. In order to reduce the microscopic gap, the valve seat is usually coated with a circle of continuous adhesive glue such as the le tai adhesive on the side surface of the valve seat before press fitting, the efficiency is lower, and the coating is easy to be uneven because of the manual coating in the prior art. For this purpose, in view of the drawbacks of the prior art, an assembly device for an air valve is proposed. Disclosure of Invention Aiming at the defects of the prior art, the invention provides an assembling device for an air valve, which solves the problems in the background art. The invention provides a technical scheme that the assembling device for the air valve comprises a pressure head cylinder arranged on a workbench and a pressure head fixed at the lower end of the pressure head cylinder, wherein the pressure head comprises a pressure cylinder fixed at the lower end of the pressure head cylinder, a cylindrical cavity is arranged in the pressure cylinder, a round shell is movably arranged in the cylindrical cavity through a lifting mechanism, and a positioning claw mechanism for correcting the position of a valve seat is arranged on the bottom surface of the round shell; the positioning pawl mechanism includes: the vertical rods are distributed around the circle center of the bottom surface of the round shell at equal intervals; The moving mechanism is connected with the round shell and used for driving a plurality of vertical rods to move radially on the bottom surface of the round shell; The support block is fixed on the outer side of the lower end of the vertical rod; the arc-shaped block is fixed on the outer side of the lower end of the vertical rod and is positioned above the supporting block; The lower end of the pressure cylinder is provided with a pressure surface matched with the top end of the valve seat. Preferably, the lifting mechanism is in transmission connection with a moving plate, the upper end of the round shell is in rotary connection with the moving plate, and a rotary driving mechanism is connected between the round shell and the moving plate; and a dispensing mechanism is arranged on the side surface of the workbench. Preferably, the dispensing mechanism comprises a first cylinder fixed on the workbench, and a dispensing valve is fixedly connected to the telescopic end of the first cylinder. Preferably, the side surface of the pressing cylinder is slidably provided with a closed cover through a second cylinder, the bottom of the closed cover forms a closed space when being contacted with the cylinder cover, and the side surface of the pressing cylinder is integrally formed with a pressing plate which is slidably matched with the inner wall of the closed cover; The side of the cylindrical cavity is provided with an exhaust hole in a penetrating way. Preferably, sealing rings are fixed on the bottom of the closed cover and the side face of the pr