Gas exchange cock angle adjustment device and method

Abstract

The present invention discloses a gas exchange cock angle adjustment device and method thereof, which relates to the field of coking technology in the coking industry, wherein the gas exchange cock angle adjustment device comprises: a stroke connecting rod; a gas exchange cock; a rod body connected to the gas exchange cock; an adjustment mechanism, wherein the adjustment mechanism is connected to the rod body, and the connection between the adjustment mechanism and the rod body is a first intersection point, and the position of the first intersection point can be adjusted and changed along the extension direction of the rod body, and the adjustment mechanism is connected to the stroke connecting rod, and the connection between the adjustment mechanism and the stroke connecting rod is a second intersection point, and the position of the second intersection point can be adjusted and changed along the extension direction of the stroke connecting rod. The present application can solve the problem of incorrect angles when some exchange cocks are exchanged, and can adjust the angle of each exchange cock individually, flexibly, and symmetrically without affecting each other.

Description

Technical Field

[0001] The invention relates to the technical field of coking in the coking industry, and in particular to a gas exchange cock angle adjustment device and a method thereof. Background Art

[0002] During the normal production process of the coke oven, the gas and exhaust gas are exchanged at regular intervals to change the gas flow direction of the coke oven heating system, and it is the gas exchange control device that realizes this action. The gas exchange process is driven by the cylinder to drive the rod, and the fixed points at different positions on the rod drive multiple gas exchange cocks to realize the positive and negative changes of the gas.

[0003] However, due to long-term use of the device, the following problems may occur: 1. The pull rod is partially stretched; 2. The pull rod is partially sunken and tilted; 3. The gas pipeline is partially sunken. The emergence of these problems will cause the exchange cock of this part to not be exchanged in place, and the forward and reverse angles cannot reach a completely accurate position, which will affect gas heating to a certain extent. Figure 1 It is a schematic diagram of the prior art when the exchange angle of some plugs is abnormal. Figure 1 As shown in the figure, other exchange cocks are normal, but some are not at the right angle during exchange. This problem cannot be effectively solved by adjusting the oil cylinder or loosening the chain, because this will make the exchange cocks that were originally at the wrong angle return to normal, but the exchange cocks that were originally normal will become at the wrong angle during exchange. Therefore, a method is urgently needed to solve the above problem. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a gas exchange valve angle adjustment device and method, which can solve the problem of incorrect angles when some exchange valves are exchanged, and can adjust the angle of each exchange valve individually, flexibly and symmetrically without affecting each other.

[0005] The specific technical solution of the embodiment of the present invention is:

[0006] A gas exchange cock angle adjustment device, the gas exchange cock angle adjustment device comprising:

[0007] Travel connecting rod;

[0008] A gas exchange cock; a rod connected to the gas exchange cock;

[0009] An adjusting mechanism, wherein the adjusting mechanism is connected to a rod body, a connection point between the adjusting mechanism and the rod body being a first intersection point, and a position of the first intersection point can be adjusted and changed along an extension direction of the rod body; the adjusting mechanism is connected to a travel connecting rod, a connection point between the adjusting mechanism and the travel connecting rod being a second intersection point, and a position of the second intersection point can be adjusted and changed along an extension direction of the travel connecting rod.

[0010] Preferably, the adjustment mechanism comprises:

[0011] A travel link fixing member having a groove extending in a vertical direction; a buckle fixedly arranged on the travel link fixing member and capable of being tightened, the travel link is inserted into the buckle and can slide, and the connection portion between the buckle and the travel link is the second intersection;

[0012] An adjusting rod movably arranged in the groove, the adjusting rod having a linkage portion, the linkage portion being connected to the rod body, and the connection point between the linkage portion and the rod body being the first intersection;

[0013] A fixing member for locking the adjusting rod and the travel link fixing member.

[0014] Preferably, the rod body has a slide groove extending along the axis of the rod body;

[0015] The linkage part is arranged in the slide slot and can move along the extending direction of the slide slot.

[0016] Preferably, the extending direction of the linkage portion is perpendicular to the axis of the adjustment rod and perpendicular to the travel connecting rod.

[0017] Preferably, the axis of the through hole formed by the buckle is parallel to the travel connecting rod.

[0018] Preferably, a threaded hole is provided on the travel connecting rod fixing piece, and the threaded hole is connected to the groove; the fixing piece comprises: a bolt screwed in the threaded hole and capable of pressing against the adjusting rod to fix the adjusting rod and the travel connecting rod fixing piece.

[0019] Preferably, the linkage portion is annular, and the rod body is inserted into the annular linkage portion.

[0020] A method for adjusting the angle of a gas exchange cock using any of the above-mentioned gas exchange cock angle adjustment devices, the method comprising:

[0021] When the angle α of the gas exchange cock in the forward and reverse states is symmetrical and small, the adjusting rod is moved downward in the groove by a distance h to adjust so that the first intersection point moves downward in the vertical direction. At this time, the angle of the gas exchange cock is restored to β. The relationship between the angle change and the downward movement distance h of the adjusting rod is as follows:

[0022]

[0023] When the angle α of the gas exchange cock in the forward and reverse states is symmetrically large, the adjusting rod is moved upward in the groove by a distance h to adjust the first intersection point to move upward in the vertical direction. At this time, the angle of the gas exchange cock is restored to β. The relationship between the angle change and the downward movement distance h of the adjusting rod is as follows:

[0024]

[0025] Wherein, H represents the distance between the gas exchange cock and the travel connecting rod, and a represents the distance between the first intersection point and the gas exchange cock in the axial direction of the travel connecting rod.

[0026] Preferably, the gas exchange cock angle adjustment method further comprises:

[0027] When the forward angle is normal and the reverse angle is small, loosen the buckle and adjust the position of the travel connecting rod fixing part on the travel connecting rod to the left, then tighten the buckle, so that the forward and reverse angles are both small and the deviation is consistent, and then adjust it by the steps when the angle α of the gas exchange cock in the forward and reverse states is symmetrically small;

[0028] When the forward angle is normal and the reverse angle is too large, loosen the buckle and adjust the position of the travel connecting rod fixing on the travel connecting rod to the right, then tighten the buckle, so that the forward and reverse angles are both too large and the degree of deviation is consistent, and then adjust it through the steps when the angle α of the gas exchange cock in the forward and reverse states is symmetrically large.

[0029] The technical solution of the present invention has the following significant beneficial effects:

[0030] The gas exchange cock angle adjustment device in the present application is provided with an adjustment mechanism between a stroke connecting rod and a rod body connected to the gas exchange cock. The second intersection point of the connection between the adjustment mechanism and the stroke connecting rod can be adjusted and changed along the extension direction of the stroke connecting rod, thereby changing the problem that when the forward angle is normal, the reverse angle is too small or too large, and changing it to a state where both the forward angle and the reverse angle are too small or too large; the first intersection point of the connection between the adjustment mechanism and the rod body can be adjusted and changed along the extension direction of the rod body, thereby changing the problem that when the forward angle and the reverse angle are too small or too large, and changing it to a state where both the forward angle and the reverse angle are restored to a normal exchange state.

[0031] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0033] Figure 1 It is a schematic diagram of the situation in which the exchange angle of some cocks in the prior art is abnormal;

[0034] Figure 2 This is a schematic diagram of the adjustment mechanism in the embodiment of the present application under the adjustment of the forward state and the reverse state;

[0035] Figure 3 This is a front view of the adjustment mechanism in the embodiment of the present application;

[0036] Figure 4 It is a side view of the adjustment mechanism in the embodiment of the present application;

[0037] Figure 5 It is a top view of the adjustment mechanism in the embodiment of the present application.

[0038] Reference numerals of the above drawings:

[0039] 1. Travel connecting rod; 2. Gas exchange cock; 3. Rod body; 31. Slide groove; 4. Adjustment mechanism; 41. Travel connecting rod fixing piece; 411. Buckle; 412. Groove; 42. Adjustment rod; 43. Linkage part; 44. Fixing piece; 5. First intersection point; 6. Second intersection point. DETAILED DESCRIPTION

[0040] The details of the present invention can be more clearly understood by combining the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as "arranged on" another element, it can be directly on another element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the communication between the two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0042] In order to solve the problem of incorrect angles of some exchange cocks during exchange, and to adjust the angle of each exchange cock individually, flexibly and symmetrically without affecting each other, a gas exchange cock 2 angle adjustment device is proposed in the present application. Figure 3 This is a front view of the adjustment mechanism 4 in the embodiment of the present application. Figure 4 FIG. 4 is a side view of the adjustment mechanism 4 in the embodiment of the present application. Figure 3 and Figure 4 As shown, the angle adjustment device of the gas exchange cock 2 may include: a travel connecting rod 1; a gas exchange cock 2; a rod body 3 connected to the gas exchange cock 2; an adjustment mechanism 4, the adjustment mechanism 4 is connected to the rod body 3, the connection between the adjustment mechanism 4 and the rod body 3 is a first intersection 5, the position of the first intersection 5 can be adjusted and changed along the extension direction of the rod body 3, the adjustment mechanism 4 is connected to the travel connecting rod 1, the connection between the adjustment mechanism 4 and the travel connecting rod 1 is a second intersection 6, the position of the second intersection 6 can be adjusted and changed along the extension direction of the travel connecting rod 1.

[0043] The angle adjustment device of the gas exchange cock 2 in the present application is provided with an adjustment mechanism 4 between the stroke connecting rod 1 and the rod body 3 connected to the gas exchange cock 2. The second intersection point 6 at the connection between the adjustment mechanism 4 and the stroke connecting rod 1 can be adjusted and changed along the extension direction of the stroke connecting rod 1, so as to change the problem that when the forward angle is normal, the reverse angle is too small or too large, and change it to the state where both the forward angle and the reverse angle are too small or too large; the first intersection point 5 at the connection between the adjustment mechanism 4 and the rod body 3 can be adjusted and changed along the extension direction of the rod body 3, so as to change the problem that when the forward angle and the reverse angle are too small or too large, and change it to the state where both the forward angle and the reverse angle are restored to a normal exchange state.

[0044] In order to better understand the angle adjustment device of the gas exchange cock 2 in the present application, it will be further explained and illustrated below. Figure 3 As shown, the rotation angle adjustment device of the gas exchange cock 2 comprises: a travel connecting rod 1; a gas exchange cock 2; a rod body 3 and an adjustment mechanism 4. The rod body 3 is connected to the gas exchange cock 2, extends in the radial direction of the gas exchange cock 2, and can rotate around a part of the circumferential direction of the gas exchange cock 2.

[0045] like Figure 3 As shown, the travel connecting rod 1 generally extends in the horizontal direction, and at least one rod body 3 can be connected to the travel connecting rod 1 through the adjustment mechanism 4. The travel connecting rod 1 moves back and forth in its own extension direction, thereby driving the rod body 3 to rotate back and forth around the gas exchange cock 2, thereby driving the gas exchange cock 2 to rotate back and forth. The movement of the travel connecting rod 1 can be achieved by pulling the cylinder.

[0046] like Figure 3 and Figure 4 As shown, the adjusting mechanism 4 is connected to the rod body 3, and the connection between the adjusting mechanism 4 and the rod body 3 is a first intersection 5, and the position of the first intersection 5 can be adjusted along the extension direction of the rod body 3. The adjusting mechanism 4 is connected to the travel connecting rod 1, and the connection between the adjusting mechanism 4 and the travel connecting rod 1 is a second intersection 6, and the position of the second intersection 6 can be adjusted along the extension direction of the travel connecting rod 1.

[0047] Specifically, if Figure 3 and Figure 4As shown, the adjustment mechanism 4 may include: a travel link fixing member 41 having a groove 412 extending in the vertical direction; a buckle 411 fixedly arranged on the travel link fixing member 41 and capable of being tightened, the axis of the through hole formed by the buckle 411 is parallel to the travel link 1, the travel link 1 is inserted into the buckle 411 and can slide, and the connection part between the buckle 411 and the travel link 1 is the second intersection 6; an adjustment rod 42 that is movable in the groove 412, the adjustment rod 42 having a linkage part 43, the linkage part 43 is connected to the rod body 3, and the connection part between the linkage part 43 and the rod body 3 is the first intersection 5; a fixing member 44 for locking the adjustment rod 42 and the travel link fixing member 41.

[0048] As feasible, Figure 4 As shown, bolts can be inserted into the opposite ends of the buckle 411, and nuts can be screwed into the bolts to adjust the distance between the two ends of the buckle 411, so as to adjust the tightness of the buckle 411, thereby achieving the fixation between the buckle 411 and the travel link 1, and then achieving the fixation between the travel link fixing member 41 and the travel link 1. When it is necessary to adjust the position of the travel link fixing member 41 on the travel link 1, it is only necessary to loosen the buckle 411 and move it for adjustment, and then tighten the buckle 411 to achieve fixation.

[0049] like Figure 4 As shown, when the fixing member 44 does not lock the adjusting rod 42 and the travel connecting rod fixing member 41, the adjusting rod 42 can slide in the vertical direction in the groove 412 of the travel connecting rod fixing member 41; after sliding to the required position, the adjusting rod 42 and the travel connecting rod fixing member 41 can be locked by the fixing member 44 to achieve the fixation between the two. As a feasible method, Figure 5 FIG. 4 is a top view of the adjustment mechanism 4 in the embodiment of the present application. Figure 5 As shown, a threaded hole is provided on the travel link fixing member 41, and the threaded hole is connected to the groove 412. The fixing member 44 may include a bolt screwed into the threaded hole and capable of pressing against the adjustment rod 42 to fix the adjustment rod 42 and the travel link fixing member 41. When it is not necessary to lock the adjustment rod 42 and the travel link fixing member 41, the bolt can be screwed out so that it does not press against the adjustment rod 42.

[0050] like Figure 3As shown, when the travel link 1 moves back and forth in its own extension direction, the first intersection 5 where the linkage part 43 is connected to the rod body 3 will change along the extension direction of the rod body 3. Therefore, in a feasible embodiment, the rod body 3 has a slide groove 31 extending along the axis of the rod body 3; the linkage part 43 is arranged in the slide groove 31 and can move along the extension direction of the slide groove 31. The size of the part of the linkage part 43 after passing through the slide groove 31 can be larger than the slide groove 31, so as to avoid the linkage part 43 from falling out of the slide groove 31. In the above embodiment, the extension direction of the linkage part 43 can be perpendicular to the axis of the adjustment rod 42 and perpendicular to the travel link 1, so as to ensure the smoothness of the change of the first intersection 5 along the extension direction of the rod body 3, and it is not easy to get stuck. In another feasible embodiment, the linkage part 43 is annular, and the rod body 3 is inserted into the annular linkage part 43.

[0051] The present application also proposes a method for adjusting the angle of a gas exchange cock 2 using any of the above-mentioned angle adjustment devices for the gas exchange cock 2. The method for adjusting the angle of a gas exchange cock 2 may include the following steps:

[0052] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 According to different exchange angle deviations, different solutions are given for the gas exchange cock 2 angle adjustment method.

[0053] like Figure 1 In the second case, when the angle α of the gas exchange cock 2 in the forward and reverse states is symmetrical and small, combined with Figure 2 As shown, the adjusting rod 42 is moved downward in the groove 412 by a distance h so that the first intersection 5 moves downward in the vertical direction. When the stroke distance of the stroke connecting rod 1 remains unchanged, the angle of the gas exchange valve 2 is restored to β and naturally recovers in the reverse state.

[0054] The relationship between the angle change and the downward movement distance h of the adjustment rod 42 is as follows:

[0055]

[0056] Here, H represents the distance between the gas exchange cock 2 and the travel connecting rod 1, and a represents the distance between the first intersection 5 and the gas exchange cock 2 in the axial direction of the travel connecting rod 1.

[0057] Similarly, if Figure 1 In the third case, when the angle α of the gas exchange valve 2 in the forward and reverse states is symmetrically large, the adjusting rod 42 is moved upward in the groove 412 by a distance h to adjust the first intersection 5 to move up in the vertical direction. At this time, the angle of the gas exchange valve 2 is restored to β and naturally restored in the reverse state.

[0058] The relationship between the angle change and the downward movement distance h of the adjustment rod 42 is as follows:

[0059]

[0060] like Figure 1 In the fourth case, when the forward angle is normal and the reverse angle is small, loosen the buckle 411 and adjust the position of the travel link fixing member 41 on the travel link 1 to the left, and then tighten the buckle 411, so that the forward and reverse angles are both small and the deviation is consistent. At this time, it turns into the problem of the forward and reverse angles being both small, so it can be adjusted through the above steps when the angle α of the gas exchange cock 2 in the forward and reverse states is symmetrically small.

[0061] Similarly, when the forward angle is normal and the reverse angle is too large, loosen the buckle 411, adjust the position of the travel connecting rod fixing part 41 on the travel connecting rod 1 to the right, and then tighten the buckle 411, so that the forward and reverse angles are both too large and the degree of deviation is consistent, and then adjust it through the steps when the angle α of the gas exchange valve 2 is symmetrically large in the forward and reverse states.

[0062] In the present application, a longitudinally movable adjusting rod 42 is arranged at a fixed point, i.e., the second intersection 6, of the stroke connecting rod 1 of the gas exchange, that is, the connection point with the rod body 3 becomes the longitudinally adjustable first intersection 5, and all the connection points of different rod bodies 3 are no longer on a horizontal line of the rod body 3, so that separate regulation is achieved. In principle, the original movable point was only on the horizontal X-axis, and now a variable variable on the vertical Y-axis is added. After this, for example, when the forward and reverse rotation angles of the exchange plug are smaller than the normal angles (generally 90°), the adjusting rod 42 can be adjusted downward to make the transmission connection point, i.e., the first intersection point 5, move down below the original position, thereby increasing the rotation angle of the exchange plug in a disguised manner; conversely, when the forward and reverse rotation angles are greater than the normal angles (generally 90°), the section rod can be adjusted upward to make the transmission connection point, i.e., the first intersection point 5, move up above the original position, thereby achieving the purpose of reducing the rotation angle; when the forward angle is normal and the reverse angle has a deviation, first adjust the position of the fixed point, i.e., the second intersection point 6, on the X-axis of the travel connecting rod 1, so that the deviations of the forward and reverse angles are consistent, and then adjust the position of the connection point, i.e., the first intersection point 5, on the Y-axis according to the actual situation.

[0063] The present application has the following advantages: First, the rotation angle of individual gas exchange cocks 2 can be adjusted separately without affecting other normal gas exchange cocks 2, so it has the characteristics of strong pertinence and high flexibility. Second, in the face of different angle deviation problems of the gas exchange cocks 2, corresponding adjustments can be made to solve the problems, which has the characteristics of high applicability. Third, the entire gas exchange cock 2 angle adjustment device is simple and stable, low cost, and the gas exchange cock 2 angle adjustment method is simple and uncomplicated.

[0064] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of ... " describing a combination should include determined elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps here also contemplates the implementation method consisting essentially of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "one" used to describe an element, ingredient, part or step is not said to exclude other elements, ingredients, parts or steps.

[0065] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other. The above embodiments are only for illustrating the technical concept and features of the present invention. The purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A gas exchange cock angle adjustment device, characterized in that: The gas exchange cock angle adjustment device comprises: Travel connecting rod; A gas exchange cock; a rod connected to the gas exchange cock; An adjusting mechanism, wherein the adjusting mechanism is connected to the rod body, the connection point between the adjusting mechanism and the rod body is a first intersection point, the position of the first intersection point can be adjusted and changed along the extension direction of the rod body, and the adjusting mechanism is connected to the travel connecting rod, the connection point between the adjusting mechanism and the travel connecting rod is a second intersection point, the position of the second intersection point can be adjusted and changed along the extension direction of the travel connecting rod; The adjustment mechanism comprises: a travel link fixing piece having a groove extending in a vertical direction; a buckle fixedly arranged on the travel link fixing piece and capable of being tightened, the travel link is inserted in the buckle and capable of sliding, and the connection part between the buckle and the travel link is the second intersection; an adjustment rod movable in the groove, the adjustment rod having a linkage part, the linkage part being connected to the rod body, and the connection part between the linkage part and the rod body is the first intersection; a fixing piece for locking the adjustment rod and the travel link fixing piece; The rod body is provided with a slide groove extending along the axis of the rod body; The linkage part is arranged in the slide slot and can move along the extension direction of the slide slot; The travel connecting rod fixing piece is provided with a threaded hole, and the threaded hole is connected to the groove; the fixing piece comprises: a bolt screwed in the threaded hole and capable of pressing against the adjusting rod to fix the adjusting rod and the travel connecting rod fixing piece.

2. The gas exchange cock angle adjustment device according to claim 1, characterized in that: The extending direction of the linkage portion is perpendicular to the axis of the adjustment rod and perpendicular to the travel connecting rod.

3. The gas exchange cock angle adjustment device according to claim 1, characterized in that: The axis of the through hole formed by the buckle is parallel to the travel connecting rod.

4. The gas exchange cock angle adjustment device according to claim 1, characterized in that: The linkage part is annular, and the rod body is arranged in the annular linkage part.

5. A method for adjusting the angle of a gas exchange cock using the gas exchange cock angle adjustment device as claimed in any one of claims 1 to 4, characterized in that: The gas exchange cock angle adjustment method comprises: When the angle α of the gas exchange cock in the forward and reverse states is symmetrical and small, the adjusting rod is moved downward in the groove by a distance h to adjust so that the first intersection point moves downward in the vertical direction. At this time, the angle of the gas exchange cock is restored to β. The relationship between the angle change and the downward movement distance h of the adjusting rod is as follows: ； When the angle α of the gas exchange cock in the forward and reverse states is symmetrically large, the adjusting rod is moved upward in the groove by a distance h to adjust the first intersection point to move upward in the vertical direction. At this time, the angle of the gas exchange cock is restored to β. The relationship between the angle change and the downward movement distance h of the adjusting rod is as follows: ； Wherein, H represents the distance between the gas exchange cock and the travel connecting rod, and a represents the distance between the first intersection point and the gas exchange cock in the axial direction of the travel connecting rod.

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