CN205465949U - Engine valve replacer - Google Patents

Abstract

The utility model discloses an engine valve disassembler, which is characterized in that it is mainly composed of a cross bar (2) with a threaded hole at one end and an outer load-bearing rod at the other end, which is connected to the threaded hole of the cross bar (2). Connected dismantling head, and one end is connected in the middle part of cross bar (2), and the other end then can swing left and right around this connection point to form. The utility model will not damage the valve guide sleeve when the intake valve is disassembled, has strong practicability, is convenient to operate, and is convenient for a single person to complete the disassembly and assembly work of the valve.

Description

Engine valve disassembler

technical field

The utility model relates to a mechanical device, specifically, an engine valve disassembler.

Background technique

At present, aircraft maintenance personnel often use crowbar-type valve disassembly tools when disassembling and assembling the valves of aircraft engines. Using such crowbar-type valve disassembly tools, when pressing the valves, the direction of force is not along the valve axis. , but there is a certain included angle, so there will be a certain lateral force when the valve stem moves downward. Due to the sharp chamfer of the flap groove on the neck of the intake valve, it is easy to cause the intake valve guide sleeve to be scratched by the valve neck, so that the intake valve stem cannot move flexibly in the valve guide sleeve, thereby scratching the inner wall of the guide sleeve, and even Causes the intake valve to jam. In addition, due to the longer valve flap of the intake valve, the valve spring needs to be pressed down more during installation, and the crowbar-type valve disassembly tool uses the principle of leverage, and the crowbar needs to be pressed manually, and both hands cannot be freed for disassembly and assembly. The valve flap can only be operated with one hand, which increases the difficulty of valve disassembly and assembly, and is not convenient for a single person to complete the valve disassembly work.

Utility model content

The purpose of the utility model is to overcome the defect that the valve disassembly and assembly tool in the prior art is easy to damage the valve guide sleeve, and at the same time it is not convenient for a single person to complete the valve disassembly and assembly, and provides an engine valve disassembly and assembly device.

In order to achieve the above object, the scheme adopted by the utility model is as follows: a kind of engine valve disassembler, mainly consists of a cross bar with a threaded hole at one end and an outer bearing rod at the other end, connected with the threaded hole of the cross bar It consists of a disassembly head and a load-bearing hook with one end connected to the middle of the cross bar and the other end capable of swinging left and right around the connection point.

Further, the dismounting head is composed of a lead screw threadedly connected with the threaded hole of the cross bar, a valve seat ferrule arranged at the lower end of the lead screw and capable of rotating freely, and an operating rod arranged at the upper end of the lead screw.

The outer load-bearing rod is composed of a threaded rod connected to the cross bar through a pin shaft at one end, a threaded sleeve rod connected with the other end of the threaded rod, and a pressing rod arranged on the threaded rod and used to fasten the threaded sleeve rod. Nut composition.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

(1) The lead screw of the present utility model is arranged at one end of the cross bar and can move up and down along the cross bar. The lower end of the lead screw is provided with a rotatable valve seat ferrule, and the valve seat ferrule is in a rotating state and can shield the lead screw. The rotation state, and can transmit the downward pressure to the intake valve seat, so that the intake valve seat can overcome the stretching force of the intake valve spring, and compress the spring to a sufficient position, so that it can be easily removed or removed through the gap in the middle of the ferrule. Install the intake valve flap.

(2) The load-bearing hook of the utility model can hook the shaft of the rocker arm of the valve during use, provide downward pulling force for the cross bar, and cooperate with the external load-bearing rod to keep the cross beam from being screwed in by the screw. Reverse force produces upward displacement, thus ensuring that the valve remover will not damage the valve guide sleeve.

(3) The outer bearing rod of the utility model can provide upward supporting force for the cross bar, and cooperate with the bearing hook to ensure that the cross bar does not shift. The outer bearing rod can also adjust the length to keep the cross bar in a horizontal state. To ensure that the valve seat ferrule can be vertically pressed against the intake valve seat, thereby ensuring that the valve remover will not damage the valve guide sleeve.

(4) The utility model has the advantages of simple overall structure, strong practicability, convenient operation, and is convenient for a single person to complete the valve disassembly work.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Among them, the names of parts corresponding to the reference signs are: 1-operating rod, 2-cross bar, 3-leading screw, 4-valve seat ferrule, 5-load-bearing hook, 601-threaded rod, 602-threaded sleeve rod , 603-press the nut.

detailed description

The utility model will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto.

Example

As shown in Figure 1, the utility model is mainly made up of cross bar 2, dismantling head, these four parts of outer bearing bar and bearing hook 5. Wherein, one end of the cross bar 2 is provided with a threaded hole, and the outer bearing rod is arranged at the other end of the cross bar 2 .

Described dismantling head then is made up of leading screw 3, operating rod 1 and valve seat ferrule 4 three parts. Wherein, one end of the lead screw 3 is a smooth shaft provided with a through hole, and the other end is a fixed head provided with a through hole. When connecting, one end of the screw 3 provided with a smooth shaft passes through the threaded hole of the cross bar 2 and is connected with the valve seat ferrule 4, while the screw 3 is connected with the threaded hole, and the operating rod 1 passes through the threaded hole. The through hole of the fixed head of the bar 3, and the operating rod 1 can move freely in the through hole without falling off.

The valve seat ferrule 4 is a circular ferrule with a diameter smaller than the diameter of the intake valve seat, and the circular ferrule is also provided with an installation diameter between the diameter of the leading screw 3 and the diameter of the smooth shaft. hole. When connecting, the smooth shaft of the lead screw 3 passes through the installation hole of the valve seat ferrule 4, and a positioning pin is arranged in the through hole on the smooth shaft to ensure that the valve seat ferrule 4 can freely rotate around the smooth shaft. Turn without falling off. When in use, the valve seat ferrule 4 can move up and down only by rotating the operating rod 1 .

The load-bearing hook 5 is used to provide downward pulling force for the cross bar 2. When connecting, the end of the load-bearing hook 5 that is not provided with a hook is connected to the middle of the cross bar 2 through a pin shaft, and the load-bearing hook 5 is provided with a hook. One end is used to hook the valve rocker shaft and can swing left and right along the pin shaft. The load-bearing hook 5 can also cooperate with the external load-bearing rod to keep the cross bar 2 from being displaced upward due to the reverse force generated when the lead screw 3 is screwed in.

The outer load-bearing rod is used to provide upward support for the cross bar 2, and cooperates with the load-bearing hook 5 to ensure that the cross bar 2 does not shift. As shown in FIG. 1 , the outer bearing rod is composed of a threaded rod 601 , a threaded sleeve rod 602 and a compression nut 603 . When connecting, one end of the threaded rod 601 is connected to the cross bar 2 through a pin shaft, and the other end is connected to the threaded sleeve rod 602, and the compression nut 603 is arranged on the threaded rod 601 and used for fastening The threaded rod 602 is used to ensure that the threaded rod 602 will not fall off from the threaded rod 601 .

When the utility model is in use, first hook the load-bearing hook 5 on the shaft of the valve rocker arm, and then adjust the length of the outer load-bearing rod by rotating the threaded sleeve rod 602 of the outer load-bearing rod, so that the threaded sleeve rod 602 The lower end can just touch the valve cover shell mounting seat, and then turn the screw 3 through the operating lever 1 to make the valve seat ferrule 4 at the lower end of the screw 3 just press against the intake valve seat, and turn the outer bearing rod again The threaded sleeve rod 602 keeps the cross bar 2 in a horizontal state, so as to ensure that the valve seat ferrule 4 can be vertically pressed against the intake valve seat. At the same time, adjust the compression nut 603 to lock the threaded sleeve rod 602 and the threaded rod 601 to prevent the external load-bearing rod from being displaced when it is under downward pressure. At this time, turn the lead screw 3 again to apply downward pressure on the intake valve seat, so that the intake valve seat can overcome the extension force of the intake valve spring, compress the spring to a sufficient position, and remove or install it through the gap in the middle of the ferrule. Valve flap.

According to the above-mentioned embodiment, the utility model can be well realized.

Claims (3)

1. a dismounting air valve of engine device, it is characterised in that be mainly provided with screwed hole, the other end by one end It is provided with the cross bar (2) of outer bearing rod, the Tool for detaching being connected with the screwed hole of cross bar (2), and one end even It is connected on load hook (5) group that the middle part other end of cross bar (2) then can swing around this junction point Become.

A kind of dismounting air valve of engine device the most according to claim 1, it is characterised in that described dismounting Head, by the leading screw (3) being connected with the screwed hole screw thread of cross bar (2), is arranged on lower end the energy of leading screw (3) Freely rotatable valve seating cutting ferrule (4), and it is arranged on action bars (1) composition of leading screw (3) upper end.

A kind of dismounting air valve of engine device the most according to claim 2, it is characterised in that: hold outside described The threaded rod (601) that power bar is connected with cross bar (2) by bearing pin by one end, with threaded rod (601) The threaded sleeve rod (602) that the other end is connected, and be arranged on threaded rod (601) and be used for fastening this spiral shell Clamping nut (603) composition of stricture of vagina loop bar (602).