Rivetless connection device for inner and outer cylinders of valve
A technology of riveting device and inner and outer cylinders, which is applied in the field of rivetless connection devices in the valve body and outer cylinders, can solve the problems of complex structure of the rivetless connection device and unsuitable connection of inner and outer cylinders, and achieve light weight, simple structure, and improved processing efficiency effect
Inactive Publication Date: 2015-06-10
JIANGSU UNIV
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Problems solved by technology
However, the survey found that these rivetless connection devices are complex in structure and can only process flat sheets, and are not suitable for processing connections between inner and outer cylinders. This is the deficiency of the existing technology
Method used
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Embodiment 1
[0032] structured as figure 1 and figure 2 As shown, it includes a left limiting seat 1 with an inner cavity, a punch 5 and a return leaf spring 6 arranged inside the left limiting seat 1, and a right limiting seat on the side of the left limiting seat 1 close to the punch 5. Seat 7, the sleeve 2 arranged on the periphery of the left limit seat 1 and the right limit seat 7, and the support 9 and rib 10 supporting the whole device;
[0033] There is a working oil chamber 12, a punch hole 13 and a second leaf spring hole 15 inside the left limit seat 1, and there are circular step surfaces a17 and b18 on the left limit seat 1, and the middle extending near the end of the right limit seat 7 has The limit bump 16 for limiting the right limit seat 7, the top of the punch 5 has a first leaf spring hole 14, the punch 5 is embedded in the punch hole 13 on the left limit seat 1, and the reset leaf spring 6 is stuck in the second leaf spring hole 15 on the left limiting seat 1 and th...
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The invention discloses a rivetless connection device for inner and outer cylinders of a valve. The device comprises a left limiting seat, a sleeve, punches, resetting plate springs, a right limiting seat, a support seat and a rib plate, wherein a working oil cavity, punch holes and plate spring holes are formed in the left limiting seat, and the left limiting seat is connected with the support seat through screws; the right limiting seat is propped against one end of each of the inner and outer cylinders of the valve and connected with the left limiting seat through screws; a circular step surface a and a circular step surface c clamp an inner cylinder of the valve, and a circular step surface and a circular step surface d clamp an outer cylinder of the valve; the outer cylinder of the valve is sleeved with the sleeve; the punches are clamped in the punch holes through the resetting plate springs, are extruded under the action of high-pressure hydraulic oil, have yield deformation in the position of the contact point of the punches and the inner cylinder of the valve and have plastic deformation after contacted with the outer cylinder of the valve, so that the inner cylinder and the outer cylinder are connected and fixed. The rivetless connection device for the inner and outer cylinders of the valve is simple in structure, doesn't produce heat, has low impact and can guarantee performance of materials in the combination position, and the problem that the valve performance is influenced due to riveting or welding of the inner and outer cylinders of the valve can be effectively solved.
Description
technical field [0001] The invention relates to a connecting device of a valve body, in particular to a rivetless connecting device of a valve body and an outer cylinder. Background technique [0002] The traditional sheet metal connection generally adopts spot welding or riveting, but when it is applied to the connection of the inner and outer cylinders of the valve, there are still some technical defects due to the small distance between the sleeves. When spot welding is used for the connection of small inner and outer cylinders, the spot welding machine is difficult or impossible to connect, and the cost is high, the efficiency is low, and the thermal deformation will also affect the strength of the connection point. Traditional riveting requires additional connecting parts, which is expensive, and the surface quality of the riveting is poor, which seriously affects the performance of oil passing between the inner and outer cylinders. Rivetless connection technology does...
Claims
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IPC IPC(8): B21D39/00
CPCB21D39/00
Inventor 王存堂宣芮谢方伟何国志张新星张凯
Owner JIANGSU UNIV