Rapid emergency stop device

Abstract

The utility model belongs to the field of machine manufacturing, and discloses a quick emergency stop device, which comprises a shell, an emergency stop device and an emergency stop device, the oil adjusting rod penetrates through the shell and is used for adjusting the oil supply amount of the engine; one end of the swinging part is fixedly connected with the oil adjusting rod, and the other end of the swinging part extends into the accommodating cavity; the air supply structure is arranged in the containing cavity, and along with increase of air entering the containing cavity, the air supply structure drives the swing component to rotate, then the oil adjusting rod is driven to rotate, and the oil supply amount is adjusted. And along with air supply of the air supply structure, the oil quantity in the containing cavity is directly reduced, meanwhile, the oil adjusting rod is driven to achieve oil quantity adjustment, the oil reducing speed is increased, and therefore rapid parking is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical manufacturing and relates to a quick emergency stop device. Background Art

[0002] Normally, the engine stop of a mechanical fuel system is achieved through a speed regulating mechanism, that is, by controlling the air to push the rack on the fuel injection pump to stop fuel supply to achieve engine stop. In addition, there is also a part of engines that use a manual stop device to achieve emergency stop.

[0003] Among them, the method of achieving emergency engine stop by controlling the air to push the fuel injection pump rack and then driving the fuel regulating rod to rotate requires a relatively long stop time and needs to go through the whole process from normal fuel supply, reduced fuel supply to stopped fuel supply, and cannot be applied in some occasions that require quick stop. The manual stop device requires manual operation and needs to be operated on-site manually, and the required time will be even longer. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a quick emergency stop device.

[0005] In order to achieve the above purpose, the technical solution of the utility model is to provide a quick emergency stop device, which includes:

[0006] A housing having an accommodation cavity.

[0007] A fuel regulating rod passing through the housing for adjusting the fuel supply of the engine;

[0008] A swing member, one end of which is fixedly connected to the fuel regulating rod and the other end extends into the accommodation cavity;

[0009] An air supply structure arranged in the accommodation cavity. As the air supply structure gradually approaches and contacts the swing member and then continues to move linearly, a thrust is applied to the swing member to drive the swing member to rotate, and then drive the fuel regulating rod to rotate to achieve the adjustment of the fuel supply.

[0010] With the air supply of the air supply structure, the piston is pushed to move, then the rocker arm is driven to rotate, and at the same time the fuel regulating rod is driven to rotate to achieve fuel quantity adjustment, accelerating the speed of fuel reduction, so as to achieve quick stop.

[0011] According to the utility model, further, the air supply component includes a piston arranged in the accommodation cavity and coaxially with it for driving the swing member to rotate, and the piston is connected to an external air supply pipeline; the external air supply pipeline is provided with an electromagnetic valve for controlling its on-off. The pneumatic structure is adopted, and the quick stop function is realized by controlling the air through the electromagnetic valve, eliminating the original process of pushing the fuel injection pump rack and shortening the stop time.

[0012] According to the present utility model, further, one end of the piston is connected with a joint, the joint has an air circulation channel, one end of the air circulation channel communicates with the accommodating cavity, and the other end penetrates through the end face of the joint as an air inlet, so that the external air enters the accommodating cavity through the air inlet and then through the air circulation channel, and conveys air to the accommodating cavity.

[0013] According to the present utility model, further, an end cover is arranged on the end face of the housing, and the joint is connected with the end cover, which is convenient for the replacement and maintenance of the joint.

[0014] According to the present utility model, further, the swinging member is a rocker arm.

[0015] According to the present utility model, further, the outer contour of the rocker arm is conical, and the end with a smaller outer contour area extends into the accommodating cavity.

[0016] According to the present utility model, further, the connection mode between the rocker arm and the fuel adjusting rod is welding, key connection or riveting.

[0017] According to the present utility model, further, a limit screw with an axis perpendicular to the axial direction of the fuel adjusting rod is arranged in the housing, and one end of the limit screw points to the swinging member; during the normal operation of the engine, the end of the limit screw does not contact the swinging member; when stopping is required, the swinging member rotates to contact the limit screw, and then stops rotating.

[0018] According to the present utility model, further, the swinging member is a rocker arm, the outer contour of the rocker arm is conical, and the end with a smaller outer contour area extends into the accommodating cavity; during the normal operation of the engine, the end of the limit screw corresponds to and does not contact the inclined surface position of the rocker arm; when stopping is required, the outer wall with a larger contour area of the rocker arm rotates until it contacts the end of the limit screw, and then stops rotating.

[0019] According to the present utility model, further, a dial with a pointer is fixedly connected to the end face of the housing, the fuel adjusting rod penetrates through the dial, the pointer and the fuel adjusting rod are an integral structure, and cooperate with the scale position of the dial to display the load state of the engine.

[0020] The beneficial effects of the present utility model are as follows:

[0021] 1. The present utility model is convenient to operate, has a simple structure, high reliability, and is convenient for installation and disassembly.

[0022] 2. The piston movement applies a driving force to the rocker arm, causing the rocker arm to rotate, which in turn drives the fuel regulating rod to adjust the fuel supply. This eliminates the original transmission process of controlling the air to push the fuel injection pump rack, enabling rapid emergency shutdown, increasing the shutdown speed, and being more suitable for occasions requiring emergency shutdown. Brief Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of a rapid emergency shutdown device of the present utility model;

[0024] Figure 2 It is a schematic assembly structural diagram of the dial, pointer and fuel regulating rod of the present utility model;

[0025] Figure 3 is Figure 1 cross-sectional structural diagram of.

[0026] In the drawings,

[0027] 100 - bracket, 200 - housing, 210 - end cover, 220 - limit screw, 300 - fuel regulating rod, 400 - rocker arm, 500 - piston, 600 - joint, 610 - air flow passage, 700 - dial. Detailed Embodiment

[0028] The following further elaborates the present utility model in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0029] Please refer to Figure 1 , which is a schematic structural diagram of a rapid emergency shutdown device for controlling the engine to achieve emergency shutdown. It includes a bracket 100 fixedly connected to the engine. A housing 200 with a receiving cavity is fixedly connected to the bracket 100, and an air supply structure is arranged in the receiving cavity. When the engine needs to be shut down, the air supply structure is started to increase the air in the receiving cavity. The air supply structure drives the rocker arm 400 described below to rotate, and then drives the fuel regulating rod 300 described below to rotate, achieving the purpose of rapidly reducing the fuel supply. Above the receiving cavity, there is also a fuel regulating rod 300 for controlling the fuel supply of the engine. A rocker arm 400 is arranged on the outer circumference of the fuel regulating rod 300. The best connection method between the fuel regulating rod 300 and the rocker arm 400 is key connection, and integral welding or riveting can also be selected as long as the two are integrated structures, so that the fuel regulating rod 300 rotates together with the rocker arm 400. During the air supply process, the air supply structure drives the rocker arm 400 to drive the fuel regulating rod 300 to rotate to zero, stop fuel supply, and achieve engine shutdown.

[0030] Specifically, the air supply structure includes a piston 500 disposed coaxially within the accommodating cavity. Under the action of an external force, the piston 500 moves towards Figure 1 and Figure 3 the right side of the accommodating cavity as shown, applying a thrust to the rocker arm 400, pushing the rocker arm 400 to drive the fuel regulating rod 300 to rotate counterclockwise, reducing the fuel supply volume to zero, and achieving engine shutdown.

[0031] In this embodiment, an end cover 210 is provided on the end face of the housing 200. A joint 600 connected to an external air supply pipeline is provided on one side of the end cover 210. An air circulation channel 610 is provided inside the joint 600. One end of the air circulation channel 610 communicates with the accommodating cavity, and the other end penetrates through the end face of the joint 600 as an air inlet. This enables external air to enter the accommodating cavity through the air inlet and the air circulation channel 610, and air is supplied thereto. The air in the accommodating cavity gradually increases, pushing the piston 500 to move linearly to the right, applying a thrust to the rocker arm 400, pushing the rocker arm 400 to drive the fuel regulating rod 300 to rotate counterclockwise, reducing the fuel supply volume to zero, and achieving emergency shutdown. During this shutdown process, air directly enters the accommodating cavity, and the amount of fuel supplied by the fuel regulating rod 300 is changed through the piston 500, eliminating the transmission process of the original shutdown device that controls air to push the fuel injection pump rack, achieving rapid emergency shutdown, increasing the shutdown speed, and being more suitable for occasions that require emergency shutdown.

[0032] In this embodiment, the outer contour of the rocker arm 400 is conical. The end with a smaller outer contour area extends into the accommodating cavity. During the movement of the piston 500, it contacts this end and pushes this end to drive the rocker arm 400 to rotate. The end with a larger outer contour area has a mounting hole for accommodating the fuel regulating rod 300, and the fuel regulating rod 300 is fixedly installed in this mounting hole, enabling the two to move synchronously. As the air in the accommodating cavity increases, the piston 500 pushes the rocker arm 400 to swing, and the rocker arm 400 drives the fuel regulating rod 300 to rotate until the fuel regulating rod 300 gradually returns to zero, stopping fuel supply to the engine and achieving emergency shutdown.

[0033] In this embodiment, in order to prevent the rocker arm 400 from rotating too large an angle, exceeding the rotation angle of the fuel regulating rod 300, a limit screw 220 with an axis perpendicular to the axial direction of the fuel regulating rod 300 is provided inside the housing 200, and one end of the limit screw 220 points to the rocker arm 400. During the normal operation of the engine, the end of the limit screw 220 corresponds to and does not contact the inclined surface position of the rocker arm 400. When shutdown is required, the rocker arm 400 rotates counterclockwise, and the outer wall with a larger contour area of the rocker arm 400 rotates until it contacts the end of the limit screw 220. The limit screw 220 prevents the rocker arm 400 from continuing to rotate. At this time, the fuel regulating rod 300 is in the zero position and stops fuel supply. The setting of the limit screw 220 can limit the rotation of the fuel regulating rod 300.

[0034] In order to improve the degree of automation of emergency shutdown, a solenoid valve (not shown in the figure) is provided on the air supply pipeline; when the solenoid valve is energized, it controls the air to pass through the air pipeline and flow to the accommodation cavity through the air flow channel 610 of the joint, pushing the piston 500 to move linearly to the right. After the piston moves a certain distance, it contacts the end with a smaller outer contour area of the rocker arm 400, driving the rocker arm 400 and the fuel regulating rod 300 to rotate, so that the engine is in a fuel reduction state. As the air supply continues, when the rocker arm 400 and the fuel regulating rod 300 rotate to the position of the limit screw 220, the engine completes the shutdown.

[0035] As Figure 2 shown, a dial 700 with a pointer is also fixedly connected to the end face of the housing 200. The fuel regulating rod 300 passes through the dial 700. The pointer and the fuel regulating rod 300 are connected together by splines and cooperate with the scale position of the dial 700 to display the load state of the engine.

[0036] The above is only the preferred embodiment of the present invention, and it does not impose any formal or substantial limitations on the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the premise of the present invention, several improvements and supplements can still be made, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any equivalent changes made by those skilled in the art who are familiar with this specialty without departing from the spirit and scope of the present invention by making some changes, modifications and evolutions using the technical content disclosed above are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A fast emergency stop device, wherein, including, a housing having an accommodation cavity; a fuel adjustment rod passing through the housing for adjusting the fuel supply of the engine; a swing member, one end of which is fixedly connected to the fuel adjustment rod and the other end extends into the accommodation cavity; an air supply structure arranged in the accommodation cavity. As the air supply structure gradually approaches, contacts and then continues to move linearly towards the swing member, a thrust is applied to the swing member. The air supply structure pushes the swing member to rotate, thereby driving the fuel adjustment rod to rotate, realizing the adjustment of the fuel supply.

2. The rapid emergency stop device according to claim 1, wherein, The air supply component includes a piston arranged in the accommodation cavity and coaxially with it for driving the swing member to rotate. The piston is connected to an external air supply pipeline; a solenoid valve for controlling the on-off of the external air supply pipeline is arranged on the external air supply pipeline.

3. The quick emergency stop device according to claim 2, wherein, One end of the piston is connected with a joint which has an air circulation channel. One end of the air circulation channel communicates with the accommodation cavity, and the other end penetrates the end face of the joint as an air inlet, so that the external air enters the accommodation cavity through the air inlet and then through the air circulation channel, and conveys air to the accommodation cavity.

4. The quick emergency stop device according to claim 3, wherein, An end cover is arranged on the end face of the housing, and the joint is connected to the end cover.

5. The quick emergency stop device according to claim 1, wherein, The swing member is a rocker arm.

6. The rapid emergency stop device according to claim 5, wherein, The outer contour of the rocker arm is conical, and the end with a smaller outer contour area extends into the accommodation cavity.

7. The rapid emergency stop device according to claim 5, wherein, The connection mode between the rocker arm and the fuel adjustment rod is welding, key connection or riveting.

8. The rapid emergency stop device according to claim 1, wherein, A limit screw with an axis perpendicular to the axial direction of the fuel adjustment rod is arranged in the housing, and one end of the limit screw points to the swing member; during the normal operation of the engine, the end of the limit screw does not contact the swing member; when parking is required, the swing member rotates until it contacts the limit screw and then stops rotating.

9. The rapid emergency stop device according to claim 8, wherein, The swing member is a rocker arm, and the outer contour of the rocker arm is conical. The end with a smaller outer contour area extends into the accommodation cavity; during the normal operation of the engine, the end of the limit screw corresponds to and does not contact the inclined surface position of the rocker arm; when parking is required, the outer wall with a larger contour area of the rocker arm rotates until it contacts the end of the limit screw and then stops rotating.

10. The quick emergency stop device according to claim 1, wherein, A dial with a pointer is also fixedly connected to the end face of the housing. The fuel adjustment rod passes through the dial. The pointer and the fuel adjustment rod are an integral structure and cooperate with the scale position of the dial to display the load state of the engine.

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