A plunger pump valve cover thread pre-tightening anti-loosening structure and anti-loosening method
A technology of bonnet thread and plunger pump, which is applied in the direction of valve housing structure, pump components, valve devices, etc., and can solve the problems of crushing, poor wear resistance and corrosion resistance of bolts, etc.
Active Publication Date: 2020-11-10
YANCHENG SUNDA PETROCHEMICAL MASCH CO LTD
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Problems solved by technology
Solve the problem that the bolts of the cylinder head cover are loose during the operation of the engine and the aluminum cylinder head cover is easily crushed under the excessive bolt pre-tightening force, and the structure is required to be simple and the cost is low; but the anti-loosening connection structure cannot be sent The engine cylinder head is pre-tightened and anti-loosen in four directions, and the wear resistance and corrosion resistance of the bolts are not very good
Method used
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[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0037] see Figure 1-5 As shown, a plunger pump valve cover thread pre-tightening and anti-loosening structure includes a first mechanism 1, a second mechanism 2 is arranged on one side of the first mechanism 1, and the first mechanism 1 is arranged above one end. There is a third mechanism 3, and a fourth mechanism 4 is provided below the first mechanism 1 at a position aligned with the third mechanism 3;
[0038] The first mechanism 1 includes a plunger 101, the arc side of the...
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Abstract
The invention discloses a thread pre-tightening and anti-loosening structure of a valve cover of a plunger pump, which comprises a first mechanism, a second mechanism is arranged on one side of the first mechanism, and a third mechanism, a fourth mechanism is provided at the position below the first mechanism that is aligned with the third mechanism; the first mechanism includes a plunger, and a tight cap is screwed on the arc side of the plunger near one end, and the Two plunger oil rings are sleeved on the arc side of the first mechanism close to the tightening cap; the invention also discloses a method for preventing loosening of the screw pre-tightening and preventing loosening structure of the valve cover of the plunger pump. In the present invention, the first structure, the second structure, the third structure, and the fourth structure are used together to pre-tighten and prevent loosening of the valve cover from four directions, and the set plunger has strong wear resistance and can Enhances the fit between the bonnet and plunger for increased preload strength.
Description
technical field [0001] The invention relates to the technical field of pre-tightening and anti-loosening, in particular to a thread pre-tightening and anti-loosening structure and an anti-loosening method for a valve cover of a plunger pump. Background technique [0002] The plunger pump is an important device in the hydraulic system. It relies on the reciprocating movement of the plunger in the cylinder to change the volume of the sealed working chamber to realize oil absorption and oil pressure. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment. The pre-tightening and anti-loosening of the plunger pump valve cover is very important. [0003] The patent document (CN106015266A) discloses a controllable anti-loosening connection structure of an engine cylinder head cover, including an engine and a cylinder head cover and a bolt assembly connecting the engine and the cylinder head cover, wherein the b...
Claims
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IPC IPC(8): F16K27/08F16K51/00F04B53/10F04B53/22F04B53/14B23P15/00
CPCB23P15/001F04B53/10F04B53/14F04B53/22F16K27/08F16K51/00
Inventor 彭光成徐国荣
Owner YANCHENG SUNDA PETROCHEMICAL MASCH CO LTD