CN221053763U - Cylinder clearance adjusting mechanism for reciprocating piston engine - Google Patents

Abstract

The utility model relates to the technical field of petrochemical industry and discloses a cylinder clearance adjusting mechanism for a reciprocating piston engine, which comprises a reciprocating engine cylinder body, wherein the inner wall of the cylinder of the reciprocating engine cylinder body is connected with a piston body in a sliding manner, an adjusting box is fixed at the top of the reciprocating engine cylinder body, and a clearance adjusting plate is arranged at the top of the inner wall of the cylinder of the reciprocating engine cylinder body; according to the utility model, the clearance in the cylinders can be adjusted without opening the engine by a worker, the mechanism can be used for adjusting the clearances in a plurality of cylinders at the same time, the clearance adjusting efficiency is effectively improved, the structure can be used for locking after the adjustment is completed, the change of the clearance adjusting position of the engine during working is prevented, and in the adjusting process, the distance of clearance adjusting movement in the cylinders of the engine can be observed by the workers positioned outside, so that the workers can accurately perform the adjusting work.

Description

Cylinder clearance adjusting mechanism for reciprocating piston engine

Technical Field

The utility model relates to the technical field of petrochemical industry, in particular to a cylinder clearance adjusting mechanism for a reciprocating piston engine.

Background

Petrochemical industry is an important backbone industry in modern developed countries, and starts with petroleum and natural gas to produce a series of intermediates, such as: important products closely related to national life such as plastics, synthetic fibers, synthetic rubber, synthetic detergents, solvents, paints, pesticides, dyes, medicines and the like; in petrochemical industry, an engine is an important key device, and a gas engine is a device for compressing gas to generate gas compression energy. The purpose of compressing gas is to convey gas or create necessary conditions for chemical reaction, most petrochemical devices are provided with gas engines, so that the gas engines are used as the 'hearts' of petrochemical technical equipment, play a very important role in the development of petrochemical industry, and most of engine conveying mediums are petroleum mixed gas, natural gas, nitrogen, hydrogen, oxygen, chlorine, methane, ethylene, propylene, ammonia, nitrogen dioxide and the like, wherein reciprocating piston engines are common in petrochemical industry production, have high compression efficiency and strong adaptability.

The existing reciprocating piston engine has the defects that due to systematic errors in actual production, the actual clearance volume of the engine after the engine is installed often comes in and goes out from the originally designed clearance volume, and in actual production, if working conditions change, such as the air inflow of the engine changes or the exhaust amount of the engine changes, the clearance volume of a cylinder and a piston of the engine needs to be changed. When the actual clearance volume and the designed clearance volume come in and go out are particularly large, the piston needs to be reinstalled, but the mass of the piston is generally large, the reinstallation of the piston by a worker needs to consume a great deal of time, so that the worker is troublesome in the process of adjusting the clearance of the cylinder, and the adjustment of the clearance of the cylinder according to the actual use condition of the reciprocating piston engine is inconvenient.

Disclosure of utility model

The present utility model is directed to a cylinder clearance adjustment mechanism for a reciprocating piston engine, which solves the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a reciprocating piston is cylinder clearance adjustment mechanism for engine, includes the reciprocating engine cylinder body, the cylinder inner wall sliding connection of reciprocating engine cylinder body has the piston body, the top of reciprocating engine cylinder body is fixed with the regulating box, the cylinder inner wall top of reciprocating engine cylinder body is provided with the clearance regulating plate, the top of clearance regulating plate is fixed with adjusting screw, the top of adjusting screw runs through to the inside of regulating box and with the regulating box between sliding connection, the surface cover of adjusting screw top is equipped with first swivel sleeve pipe, and adjusting screw and first swivel sleeve's inner wall threaded connection, the both sides of regulating box below all are provided with locking structure, the top of regulating box inner wall is fixed with the mounting panel, and the surface swing joint of mounting panel has the linkage, the left side at regulating box top is fixed with first motor, and the top of regulating box and the rear that is located first motor are provided with the display structure.

Preferably, the adjusting screw rod penetrates through the reciprocating engine cylinder body and is in sliding connection with the reciprocating engine cylinder body, and the clearance adjusting plate is attached to the surface of the inner wall of the cylinder of the reciprocating engine cylinder body and is in sliding connection with the inner wall of the cylinder.

Preferably, the left and right sides at clearance regulating plate top all is fixed with the gag lever post, the top of gag lever post runs through to the inside of adjusting box, and the gag lever post respectively with reciprocating engine cylinder body and adjusting box between sliding connection.

Preferably, the locking structure comprises a movable clamping plate, a threaded rod, a second motor and clamping grooves, wherein the movable clamping plate is slidably connected to the front side and the rear side of the inner wall of the adjusting box, the threaded rod is rotatably connected to the left side and the right side of the inner wall of the adjusting box, the threaded rod penetrates through the movable clamping plate and is in threaded connection with the movable clamping plate, the thread directions of the front side and the rear side of the surface of the threaded rod are oppositely arranged, the second motor is fixed to the left side and the right side of the front side of the adjusting box, an output shaft of the second motor penetrates through the inner side of the adjusting box and is fixedly connected with the front end of the threaded rod, and the clamping grooves are formed in the surface of one side opposite to the movable clamping plate.

Preferably, the guide way has all been seted up to the below of regulating box inner wall left and right sides, the left and right sides of activity cardboard all is fixed with the guide block, and the guide block is located the inside of guide way and with the inner wall sliding connection of guide way.

Preferably, the position of the clamping groove corresponds to the position of the first rotary sleeve, the inner wall of the clamping groove is arranged in a semicircular arc shape, the anti-slip pad is adhered to the surface of the inner wall of the clamping groove, and the anti-slip pad is made of rubber.

Preferably, the linkage structure includes time rule belt pulley, time rule belt, single groove belt pulley and connecting belt, the quantity of time rule belt pulley is a plurality of, and both sides around the mounting panel top are connected in their rotation, the position of time rule belt pulley corresponds with the first swivel case position of below, time rule belt pulley bottom is fixed with the connecting axle, and the connecting axle runs through the mounting panel and with first swivel case's top fixed connection, the surface at the time rule belt pulley is established to the time rule belt pulley cover, and meshes between time rule belt and the time rule belt pulley, the single groove belt pulley bolt is at the top of left side time rule belt pulley, the connecting belt cover is established on the surface of single groove belt pulley, and the single groove belt pulley of front and back both sides is connected through the connecting belt transmission, the output shaft of first motor runs through to the inside of regulating box and with the single groove belt pulley top bolt of front side.

Preferably, the display structure comprises a second rotary sleeve, a lifting screw, a pointer and a scale plate, wherein the second rotary sleeve is fixed at the top of the single-groove belt pulley at the rear side, the top of the second rotary sleeve penetrates through the adjusting box and extends to the upper side of the adjusting box, the lifting screw penetrates through the upper side of the second rotary sleeve, the lifting screw is in threaded connection with the inner wall of the second rotary sleeve, the pointer is fixed at the top of the lifting screw, and the scale plate is fixed at the top of the adjusting box and is positioned on the right side of the pointer.

Preferably, the length of the second rotary sleeve and the length of the inner wall of the second rotary sleeve are the same as those of the first rotary sleeve, and the length and the screw pitch of the lifting screw are the same as those of the adjusting screw.

Preferably, the limit groove is seted up to the top of scale plate left side surface, the top of pointer is fixed with the spacing, the spacing is L type setting, and one side of spacing extends to the inside of limit groove and with the inner wall sliding connection of limit groove.

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

according to the utility model, the clearance in the cylinders can be adjusted without opening the engine by a worker, the mechanism can be used for adjusting the clearances in a plurality of cylinders at the same time, the clearance adjusting efficiency is effectively improved, the structure can be used for locking after the adjustment is completed, the change of the clearance adjusting position of the engine during working is prevented, and in the adjusting process, the distance of clearance adjusting movement in the cylinders of the engine can be observed by the workers positioned outside, so that the workers can accurately perform the adjusting work.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic perspective view of a reciprocating engine block of the present utility model;

FIG. 3 is a cross-sectional view of the conditioning case of the present utility model;

FIG. 4 is a cross-sectional view of the conditioning case of the present utility model;

FIG. 5 is a schematic perspective view of a locking structure according to the present utility model;

FIG. 6 is a schematic perspective view of a linkage structure according to the present utility model;

fig. 7 is a schematic perspective view showing a structure in the present utility model.

In the figure: 1. a reciprocating engine block; 2. a piston body; 3. an adjusting box; 4. a clearance adjusting plate; 5. adjusting a screw; 6. a first rotating sleeve; 7. a locking structure; 71. a movable clamping plate; 72. a threaded rod; 73. a second motor; 74. a clamping groove; 8. a mounting plate; 9. a linkage structure; 91. a timing belt pulley; 92. a timing belt; 93. a single groove pulley; 94. a connecting belt; 10. a first motor; 11. a display structure; 111. a second rotating sleeve; 112. lifting screw rods; 113. a pointer; 114. a scale plate; 12. a limit rod; 13. a guide groove; 14. a guide block; 15. an anti-slip pad; 16. a limit groove; 17. and a limiting frame.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-7, a cylinder clearance adjusting mechanism for a reciprocating piston engine comprises a reciprocating engine cylinder body 1, wherein a piston body 2 is slidably connected to the inner wall of the cylinder of the reciprocating engine cylinder body 1, an adjusting box 3 is fixedly arranged at the top of the inner wall of the cylinder of the reciprocating engine cylinder body 1, a clearance adjusting plate 4 is arranged at the top of the clearance adjusting plate 4, an adjusting screw 5 is fixedly arranged at the top of the adjusting screw 5, the top of the adjusting screw 5 penetrates into the adjusting box 3 and is slidably connected with the adjusting box 3, a first rotating sleeve 6 is sleeved on the surface above the adjusting screw 5, the adjusting screw 5 is in threaded connection with the inner wall of the first rotating sleeve 6, locking structures 7 are respectively arranged on two sides below the adjusting box 3, a mounting plate 8 is fixedly arranged above the inner wall of the adjusting box 3, a linkage structure 9 is movably connected to the surface of the mounting plate 8, a first motor 10 is fixedly arranged at the left side of the top of the adjusting box 3, and a display structure 11 is arranged at the rear of the first motor 10.

The adjusting screw 5 penetrates the reciprocating engine cylinder body 1 and is in sliding connection with the reciprocating engine cylinder body 1, the clearance adjusting plate 4 is attached to the surface of the inner wall of the reciprocating engine cylinder body 1 and is in sliding connection with the inner wall of the cylinder, in the embodiment, the adjusting screw 5 is enabled to move through the rotation of the first rotating sleeve 6, the clearance adjusting plate 4 in the inner wall of the reciprocating engine cylinder body 1 is pushed to move, and then the purpose of adjusting the clearance is achieved.

The left and right sides at the top of clearance regulating plate 4 all is fixed with gag lever post 12, and the top of gag lever post 12 runs through to the inside of adjusting box 3, and sliding connection between gag lever post 12 and reciprocating engine cylinder body 1 and the adjusting box 3 respectively, in this embodiment, after rotatory in first swivel sleeve 6 takes place, gag lever post 12 on both sides can carry out spacing to adjusting screw 5, and then makes adjusting screw 5 only can carry out the activity from top to bottom, carries out the regulation work.

The locking structure 7 comprises a movable clamping plate 71, a threaded rod 72, a second motor 73 and clamping grooves 74, wherein the movable clamping plate 71 is slidingly connected to the front side and the rear side of the inner wall of the adjusting box 3, the threaded rod 72 is rotationally connected to the left side and the right side of the inner wall of the adjusting box 3, the threaded rod 72 penetrates through the movable clamping plate 71 and is in threaded connection with the movable clamping plate 71, the directions of threads on the front side and the rear side of the surface of the threaded rod 72 are opposite, the second motor 73 is fixed to the left side and the right side of the front side of the adjusting box 3, an output shaft of the second motor 73 penetrates through the inner wall of the adjusting box 3 and is fixedly connected with the front end of the threaded rod 72, the clamping grooves 74 are formed in the surfaces of the opposite sides of the movable clamping plate 71, after the clearance adjustment of an engine cylinder is completed, workers open the second motor 73 on the two sides, and then the output shaft of the second motor 73 drives the threaded rod 72 to rotate, and the movable clamping plates 71 on the front side and the rear side move in opposite directions through controlling the rotation of the output shaft of the second motor 73, so that the movable clamping plates 71 on the front side and the rear side move in opposite directions, the opposite directions are attached to the front side and the opposite directions, and the clamping grooves 74 are attached to the front side and the rear side of the front side and the rear side of the rotating plate.

Guide slots 13 are formed in the lower portions of the left side and the right side of the inner wall of the adjusting box 3, guide blocks 14 are fixed on the left side and the right side of the movable clamping plate 71, the guide blocks 14 are located in the guide slots 13 and are in sliding connection with the inner wall of the guide slots 13, in the embodiment, when the movable clamping plate 71 moves forwards and backwards, the guide blocks 14 on the two sides slide in the guide slots 13, the movable clamping plate 71 is guided, and the stability of the movable clamping plate 71 during front and back movement is improved.

The position of draw-in groove 74 corresponds each other with the position of first rotatory sleeve pipe 6, and the inner wall of draw-in groove 74 is semicircle setting, and the surface bonding of draw-in groove 74 inner wall has slipmat 15, and the material of slipmat 15 is rubber, in this embodiment, after the laminating of draw-in groove 74 is at the surface of first rotatory sleeve pipe 6, slipmat 15 can effectively improve the locking effect to first rotatory sleeve pipe 6, avoids first rotatory sleeve pipe 6 to take place the rotation condition.

The linkage structure 9 includes the timing belt pulley 91, the timing belt 92, the single groove belt pulley 93 and connecting belt 94, the quantity of timing belt pulley 91 is a plurality of, and they rotate the front and back both sides at mounting panel 8 top, the position of timing belt pulley 91 is corresponding with the first rotary sleeve 6 position of below, timing belt pulley 91 bottom is fixed with the connecting axle, and the connecting axle runs through mounting panel 8 and with the top fixed connection of first rotary sleeve 6, the surface at timing belt pulley 91 is established to timing belt 92 cover, and mesh between timing belt 92 and the timing belt pulley 91, single groove belt pulley 93 bolt is at the top of leftmost timing belt pulley 91, connecting belt 94 cover is established at the surface of single groove belt pulley 93, and the single groove belt pulley 93 of front and back both sides is through connecting belt 94 transmission connection, the output shaft of first motor 10 runs through to the inside of adjustment tank 3 and with the single groove belt pulley 93 top bolt of front side, in this embodiment, when the staff needs to adjust the cylinder of this engine, the staff opens first motor 10, and then the belt pulley 92 overlaps at the surface of timing belt pulley, and the single groove belt pulley 93 can take place the clearance in turn, and all the clearance can reach the purpose of single groove belt pulley 93 rotation, and all the clearance adjustment belt pulley 93 take place, and all the purpose of the single groove belt pulley 93 rotation is reached.

The display structure 11 comprises a second rotating sleeve 111, a lifting screw 112, a pointer 113 and a scale plate 114, wherein the second rotating sleeve 111 is fixed at the top of a single-groove belt pulley 93 at the rear side, the top of the second rotating sleeve 111 penetrates through the adjusting box 3 and extends to the upper side of the adjusting box 3, the lifting screw 112 penetrates through the upper side of the second rotating sleeve 111, the lifting screw 112 is in threaded connection with the inner wall of the second rotating sleeve 111, the pointer 113 is fixed at the top of the lifting screw 112, the scale plate 114 is fixed at the top of the adjusting box 3 and is positioned on the right side of the pointer 113, in the embodiment, in the clearance adjusting process, the rotation of the single-groove belt pulley 93 at the rear side drives the second rotating sleeve 111, the lifting screw 112 ascends, and a worker can accurately adjust the position of the clearance adjusting plate 4 in a cylinder according to the position of the pointer 113 pointing to the scale plate 114, so that the adjusting accuracy is improved.

The length of the second rotating sleeve 111 and the length of the inner wall of the second rotating sleeve are the same as those of the first rotating sleeve 6, the length and the pitch of the lifting screw 112 are also the same as those of the adjusting screw 5, in this embodiment, when the first rotating sleeve 6 rotates to drive the adjusting screw 5 to move downwards to adjust, the lifting screw 112 above the adjusting screw correspondingly rises by the same height, so that an outside worker can accurately know the condition in the cylinder, and the adjusting work is convenient.

The spacing groove 16 has been seted up to the top of scale 114 left side surface, the top of pointer 113 is fixed with spacing 17, spacing 17 is L type setting, and one side of spacing 17 extends to the inside of spacing groove 16 and with the inner wall sliding connection of spacing groove 16, in this embodiment, after second swivel sleeve 111 takes place rotatory, spacing 17 of top can carry out spacingly to lifting screw 112, and then make lifting screw 112 only can reciprocate, so that show the operation to clearance adjustment plate 4's active distance, provide convenience for the staff of external debugging.

Working principle: when a worker needs to adjust the clearance of a cylinder in the reciprocating engine, the worker firstly opens the first motor 10 above, the output shaft of the first motor 10 drives the single-groove belt pulley 93 below to rotate, all the remaining timing belt pulleys 91 simultaneously rotate in the same direction through belt transmission, the timing belt pulleys 91 enable the first rotary sleeve 6 to rotate through the connecting shaft below, the adjusting screw 5 below the first rotary sleeve 6 moves downwards, the adjusting screw 5 pushes the clearance adjusting plate 4 to move, the clearance adjusting plate 4 further adjusts the size of the clearance space in the cylinder, the second rotary sleeve 111 also rotates in the adjusting process, the adjusting screw 5 descends for a distance, the lifting screw 112 also ascends for a distance corresponding to the distance, the worker can accurately adjust the position of the clearance adjusting plate 4 in the cylinder through the pointing position of the pointer 113, after the adjusting screw 5 is adjusted to a proper position, the worker closes the first motor 10 and opens the second motor 73 on two sides, the movement of two sides of the adjusting screw pushes the clearance adjusting plate 4 to move, and the clamping plate 71 moves in the opposite directions to the reciprocating engine, and the clearance of the reciprocating engine is adjusted on the opposite surfaces of the cylinder 6.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a cylinder clearance adjustment mechanism for reciprocating piston engine, includes reciprocating engine cylinder block (1), its characterized in that: the cylinder inner wall sliding connection of reciprocating engine cylinder body (1) has piston body (2), the top of reciprocating engine cylinder body (1) is fixed with regulating box (3), the cylinder inner wall top of reciprocating engine cylinder body (1) is provided with clearance regulating plate (4), the top of clearance regulating plate (4) is fixed with adjusting screw (5), the top of adjusting screw (5) runs through to the inside of regulating box (3) and with sliding connection between regulating box (3), the surface cover of adjusting screw (5) top is equipped with first rotatory sleeve pipe (6), and the inner wall threaded connection of adjusting screw (5) and first rotatory sleeve pipe (6), the both sides of regulating box (3) below all are provided with locking structure (7), the top of regulating box (3) inner wall is fixed with mounting panel (8), and the surface swing joint of mounting panel (8) has structure (9), the left side at regulating box (3) top is fixed with first motor (10), and the top of regulating box (3) just is located the rear of first motor (10) and is provided with and shows structure (11).

2. The cylinder clearance adjustment mechanism for a reciprocating piston engine according to claim 1, characterized in that: the adjusting screw (5) penetrates through the reciprocating engine cylinder body (1) and is in sliding connection with the reciprocating engine cylinder body (1), and the clearance adjusting plate (4) is attached to the surface of the inner wall of the cylinder of the reciprocating engine cylinder body (1) and is in sliding connection with the inner wall of the cylinder.

3. The cylinder clearance adjustment mechanism for a reciprocating piston engine according to claim 1, characterized in that: limiting rods (12) are fixed on the left side and the right side of the top of the clearance adjusting plate (4), the top ends of the limiting rods (12) penetrate through the adjusting box (3), and the limiting rods (12) are respectively connected with the reciprocating engine cylinder body (1) and the adjusting box (3) in a sliding mode.

4. The cylinder clearance adjustment mechanism for a reciprocating piston engine according to claim 1, characterized in that: the locking structure (7) comprises a movable clamping plate (71), a threaded rod (72), a second motor (73) and clamping grooves (74), wherein the movable clamping plate (71) is slidably connected to the front side and the rear side of the inner wall of the adjusting box (3), the threaded rod (72) is rotatably connected to the left side and the right side of the inner wall of the adjusting box (3), the threaded rod (72) penetrates through the movable clamping plate (71) and is in threaded connection with the movable clamping plate (71), the thread directions of the front side and the rear side of the surface of the threaded rod (72) are oppositely arranged, the second motor (73) is fixed to the front side and the right side of the front side of the adjusting box (3), and an output shaft of the second motor (73) penetrates through the inner side of the adjusting box (3) and is fixedly connected with the front end of the threaded rod (72), and the clamping grooves (74) are formed in the surface of the opposite sides of the movable clamping plate (71).

5. The cylinder clearance adjustment mechanism for a reciprocating piston engine according to claim 4, characterized in that: guide grooves (13) are formed in the lower portions of the left side and the right side of the inner wall of the adjusting box (3), guide blocks (14) are fixed on the left side and the right side of the movable clamping plate (71), and the guide blocks (14) are located in the guide grooves (13) and are in sliding connection with the inner wall of the guide grooves (13).

6. The cylinder clearance adjustment mechanism for a reciprocating piston engine according to claim 4, characterized in that: the position of the clamping groove (74) corresponds to the position of the first rotary sleeve (6), the inner wall of the clamping groove (74) is arranged in a semicircular arc shape, the anti-slip pad (15) is adhered to the surface of the inner wall of the clamping groove (74), and the anti-slip pad (15) is made of rubber.

7. The cylinder clearance adjustment mechanism for a reciprocating piston engine according to claim 1, characterized in that: the utility model provides a linkage structure (9) is including time rule belt pulley (91), time rule belt (92), single groove belt pulley (93) and connecting belt (94), the quantity of time rule belt pulley (91) is a plurality of, and their rotation connects the front and back both sides at mounting panel (8) top, the position of time rule belt pulley (91) corresponds with the first rotatory sleeve pipe (6) position of below, time rule belt pulley (91) bottom is fixed with the connecting axle, and the connecting axle runs through mounting panel (8) and with the top fixed connection of first rotatory sleeve pipe (6), the surface at time rule belt pulley (91) is established to time rule belt (92) cover, and meshes between time rule belt pulley (91) and time rule belt pulley (92), the top at left-most time rule belt pulley (91) is bolted to single groove belt pulley (93), the surface at single groove belt pulley (93) is established to connecting belt pulley (94) cover, and single groove belt pulley (93) of front and back both sides are connected through connecting belt pulley (94) transmission, the inside of adjusting case (3) of first motor output shaft (10) runs through and with single groove bolt (93) of the top.

8. The cylinder clearance adjustment mechanism for a reciprocating piston engine according to claim 7, characterized in that: the utility model provides a display structure (11) is including second swivel case (111), lift screw (112), pointer (113) and scale plate (114), single groove belt pulley (93) top at the rear side is fixed to second swivel case (111), and the top of second swivel case (111) runs through adjustment case (3) and extends to the top of adjustment case (3), lift screw (112) run through the top that sets up in second swivel case (111), and the inner wall threaded connection of lift screw (112) and second swivel case (111), the top at lift screw (112) is fixed to pointer (113), scale plate (114) are fixed at the top of adjustment case (3) and are located the right side of pointer (113).

9. The cylinder clearance adjustment mechanism for a reciprocating piston engine according to claim 8, characterized in that: the length of the second rotary sleeve (111) and the length of the inner wall of the second rotary sleeve are the same as those of the first rotary sleeve (6), and the length and the screw pitch of the lifting screw (112) are the same as those of the adjusting screw (5).

10. The cylinder clearance adjustment mechanism for a reciprocating piston engine according to claim 8, characterized in that: the top of scale plate (114) left side surface has seted up spacing groove (16), the top of pointer (113) is fixed with spacing (17), spacing (17) are L type setting, and one side of spacing (17) extends to the inside of spacing groove (16) and with the inner wall sliding connection of spacing groove (16).