Auxiliary device for processing steam turbine cylinder body

Abstract

The invention relates to the technical field of steam turbine cylinder body machining, and discloses an auxiliary device for steam turbine cylinder body machining, which comprises a shell, a water sprayer is arranged on the shell, the water sprayer is used for spraying water to a tank body in machining, a lifting device is further arranged in the shell, and the lifting device is used for driving the water sprayer to slide back and forth on the shell. According to the auxiliary device for steam turbine cylinder body machining, by arranging the lifting device, a water sprayer on the shell can conduct automatic height adjustment in a reciprocating circulating mode, so that the height can be changed in the tank body machining process, and compared with traditional fixed-point spraying, the tank body can be better cooled and washed; and meanwhile, the requirement for sliding of the lifting device is met through the driving mechanism, the requirement for kinetic energy is reduced, the machining cost is further reduced, and by arranging the adjusting mechanism, the water sprayer can be intermittently close to or away from the machining cylinder body while the sliding stability of the water sprayer is improved in an auxiliary mode.

Description

Technical Field

[0001] The invention relates to the technical field of steam engine cylinder body processing, in particular to an auxiliary device for steam engine cylinder body processing. Background Art

[0002] Steam engine cylinder block processing refers to a series of mechanical processing and finishing processes on the engine cylinder block. The cylinder block is one of the core components of an internal combustion engine or steam engine. It not only carries the movement of the piston, but also withstands high temperature and high pressure working environment. The purpose of cylinder block processing is to ensure the accuracy, strength and durability of the cylinder block to ensure the normal operation of the engine.

[0003] For example, the application number CN116394041A is an auxiliary device for machining a steam engine cylinder body.

[0004] The above patent proposes to place the main shaft frame in the two bearing grooves of the steam turbine cylinder body, and cooperate with the design of a tool installed in the inner cavity of the steam turbine cylinder body and connected to the main shaft drive. A three-drive linkage driving mode of axial feed, rotation around the axis and radial feed is adopted. The steam turbine cylinder body with small bearing grooves at both ends and a large middle cavity can be processed without disassembling the cylinder. The processing accuracy is high. Compared with traditional processing technology, the complex process of repeated adaptation, measurement, adjustment and reprocessing is avoided, which effectively improves the processing efficiency, reduces the processing cost, and improves the stability and controllability of the processing quality of the steam turbine cylinder body.

[0005] During the cylinder machining process, coolant is sprayed on the cylinder to clean impurities generated during the machining process, and to achieve the purpose of dust reduction and rapid cooling. The traditional spraying mechanism adopts fixed-point spraying to allow the coolant to flow along the surface of the tank to meet the flushing needs. However, the use of fixed spraying will firstly cause a large waste, and the spraying area is uneven, which may easily cause the impurities on the surface of the tank to be unable to be effectively removed. Secondly, dust reduction is also affected to a certain extent, and flying chips at some angles will still float. At the same time, spraying at a fixed height will also cause changes in the stress on the surface of the tank, thereby causing fluctuations in the quality of the tank.

[0006] Therefore, we proposed an auxiliary device for machining a steam engine cylinder body in order to solve the above-mentioned problems. Summary of the invention

[0007] The object of the present invention is to provide an auxiliary device for steam engine cylinder processing, so as to solve the problem that the fixed spraying proposed in the above-mentioned background technology firstly causes great waste and the spraying area is uneven, which easily causes impurities on the surface of the tank body to be unable to be effectively removed, and secondly the dust reduction is also affected to a certain extent, and flying chips at some angles will still float. At the same time, the spraying at a fixed height will also cause the stress on the surface of the tank body to change, thereby causing the quality of the tank body to fluctuate.

[0008] To achieve the above object, the present invention provides the following technical solution: an auxiliary device for machining a steam engine cylinder body, comprising a housing, a water sprayer is arranged on the housing, the water sprayer is used to spray water to the tank body being machined, and a lifting device is also arranged in the housing, the lifting device is used to drive the water sprayer to slide back and forth on the housing; The lifting device includes a sector gear rotatably arranged in a shell, two sector gears are symmetrically arranged in the shell, a sliding block is arranged between the two sector gears, a rack is arranged on the sliding block, the sliding block is respectively engaged with the two sector gears through the rack, and the sprinkler is connected to the sliding block.

[0009] Preferably, a first fixed plate is provided on the sliding block, a second fixed plate is provided at the bottom of the sprinkler, a base is further provided in the shell, a connecting rod is provided on the base, the base is connected to the first fixed plate via the connecting rod, and the second fixed plate is slidably connected to the base.

[0010] Preferably, a driving mechanism is further provided in the housing, and the driving mechanism is used to drive the two sector gears to rotate; The driving mechanism includes a first gear rotatably arranged on the shell, the first gear is connected to the output end of the motor arranged on the shell, and a second gear is also arranged in the shell. Two second gears are arranged in the shell, and the two second gears are symmetrically arranged on both sides of the first gear. The two second gears are respectively meshed with the first gear, and the two sector gears are respectively arranged on the two second gears.

[0011] Preferably, the housing is further provided with an adjustment mechanism, and the adjustment mechanism is used to adapt to the sliding of the sprinkler; The adjustment mechanism comprises a guide rail arranged on the housing, and a protrusion is arranged on the second fixing plate, and the protrusion is slidably arranged in the guide rail.

[0012] Preferably, a resistance block is further provided in the guide rail, and the resistance block is provided on one side of the guide rail, and the resistance block is used to resist the protrusion to move.

[0013] Preferably, the base is further provided with a sliding mechanism, and the second fixing plate is slidably provided on the base through the sliding mechanism; The sliding mechanism comprises a sliding groove formed on the base, and a sliding block is arranged on the second fixing plate, and the sliding block is slidably arranged in the sliding groove.

[0014] Preferably, a positioning rod is further provided in the sliding groove, the sliding block is slidably provided on the positioning rod, a resistance spring is further provided on the sliding block, and the sliding block is elastically connected to the base via the resistance spring.

[0015] Preferably, a guide mechanism is further provided in the sliding block, and the guide mechanism is used to guide the sliding block; The guide mechanism comprises a guide groove provided in the sliding block, and a guide rod is arranged in the housing, and the guide rod is slidably arranged in the guide groove.

[0016] Preferably, a limiting mechanism is further provided in the sliding block, and the limiting mechanism comprises a limiting groove provided in the sliding block, and a limiting block is provided on the guide rod, and the limiting block is slidably provided in the limiting groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This auxiliary device for processing steam turbine cylinder bodies, during the tank body processing, heat accumulation easily leads to excessively high local temperatures, thus affecting the quality of the finished product. Through the linkage mechanism between the water sprinkler and the lifting device, the water sprinkler can slide back and forth on the surface of the tank body to dynamically adjust the height of the water sprinkler, so that the cooling water can cover different parts of the tank body surface more accurately, ensuring a uniform cooling effect, avoiding local overheating and the processing defects caused by it. By setting a driving mechanism to control the sliding of the lifting device, the height adjustment of the water sprinkler is more stable and efficient, and the optimized design of the driving mechanism reduces the demand for kinetic energy of the lifting device during the height adjustment process, thereby effectively reducing the overall processing cost while ensuring the adjustment accuracy of the water sprinkler.

[0018] 2. The auxiliary device for processing the steam turbine cylinder body, by providing an adjusting mechanism, can assist in improving the sliding stability of the water sprinkler while allowing the water sprinkler to intermittently approach or move away from the processing cylinder body, so that the water sprinkler can better flush the cylinder body surface to quickly cool it down, while not flushing the cylinder body for a long time with a large flow rate. By providing a sliding mechanism between the second fixed plate and the base, while strengthening the sliding stability of the water sprinkler caused by the adjusting mechanism, the water sprinkler can also be automatically reset, thereby avoiding long-term proximity to the tank body for flushing, causing changes in the tank body stress, and reducing the use of transmission parts, saving the cost of the device.

[0019] 3. The auxiliary device for processing the steam turbine cylinder body, by setting a guide mechanism, not only improves the sliding stability of the sliding block in the shell, but also effectively extends the service life of the device. By reducing the friction and wear between the sliding block and the shell, the guide mechanism can reduce the failure rate during the operation of the equipment and reduce maintenance costs. In addition, the guide mechanism can also improve the overall accuracy of the device, so that it can maintain a high level of operating performance under different working conditions. By setting a limit mechanism in the sliding block and utilizing the matching design of the limit groove and the limit block, a firm connection between the guide rod and the sliding block is ensured, thereby preventing the risk of the guide rod falling off during the sliding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 3 for Figure 2 Cross-sectional view at AA in the middle.

[0023] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0024] Figure 5 for Figure 3 A partial enlarged view of point B in the middle.

[0025] Figure 6 It is a schematic side view of the overall structure of the present invention.

[0026] Figure 7 for Figure 6 Cross-sectional view at BB in the middle.

[0027] Figure 8 It is a schematic front view of the three-dimensional structure of the lifting device and the driving mechanism of the present invention.

[0028] Fig. 9 It is a schematic diagram of the back of the three-dimensional structure of the lifting device and the driving mechanism of the present invention.

[0029] In the figure: 1. shell; 2. sprinkler; 3. lifting device; 31. sector gear; 32. sliding block; 4. guide mechanism; 41. guide groove; 42. guide rod; 5. limit mechanism; 51. limit groove; 52. limit block; 6. connecting rod; 7. base; 8. adjustment mechanism; 81. guide rail; 82. protrusion; 83. interference block; 9. sliding mechanism; 91. sliding groove; 92. slider; 93. positioning rod; 94. interference spring; 101. first fixed plate; 102. second fixed plate; 11. driving mechanism; 111. first gear; 112. second gear. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1: During the cylinder processing, coolant is sprayed on the cylinder to clean the impurities generated during the cylinder processing, and to achieve the purpose of dust reduction and rapid cooling. The traditional spraying mechanism adopts fixed-point spraying to allow the coolant to flow along the surface of the tank to meet the flushing needs. However, the fixed spraying will firstly cause a large waste, and the spraying area is uneven, which may easily cause the impurities on the surface of the tank to be unable to be effectively removed. Secondly, dust reduction is also affected to a certain extent, and flying chips at some angles will still float. At the same time, the fixed height spraying will also cause the stress on the surface of the tank to change, which will cause the quality of the tank to fluctuate. Please refer to Figure 1 - Fig. 9 , an auxiliary device for machining a steam engine cylinder body, comprising a housing 1, a water sprayer 2 is arranged on the housing 1, the water sprayer 2 is used to spray water to the tank body being machined, and a lifting device 3 is also arranged in the housing 1, the lifting device 3 is used to drive the water sprayer 2 to slide back and forth on the housing 1; The lifting device 3 includes a sector gear 31 rotatably arranged in the shell 1. Two sector gears 31 are symmetrically arranged in the shell 1. A sliding block 32 is arranged between the two sector gears 31. A rack is arranged on the sliding block 32. The sliding block 32 is meshed with the two sector gears 31 respectively through the rack. The sprinkler 2 is connected to the sliding block 32.

[0032] A first fixed plate 101 is provided on the sliding block 32, a second fixed plate 102 is provided at the bottom of the sprinkler 2, a base 7 is also provided in the shell 1, a connecting rod 6 is provided on the base 7, the base 7 is connected to the first fixed plate 101 through the connecting rod 6, and the second fixed plate 102 is slidably connected to the base 7.

[0033] A driving mechanism 11 is also provided in the shell 1, and the driving mechanism 11 is used to drive the two sector gears 31 to rotate; the driving mechanism 11 includes a first gear 111 rotatably provided on the shell 1, and the first gear 111 is connected to the output end of the motor provided on the shell 1. A second gear 112 is also provided in the shell 1, and two second gears 112 are provided in the shell 1, and the two second gears 112 are symmetrically provided on both sides of the first gear 111, and the two second gears 112 are respectively meshed with the first gear 111, and the two sector gears 31 are respectively provided on the two second gears 112.

[0034] In this embodiment: During the processing of the tank body, heat accumulation can easily lead to excessive local temperatures, thus affecting the quality of the finished product. Through the linkage mechanism between the sprinkler 2 and the lifting device 3, the sprinkler 2 can slide back and forth on the surface of the tank body to dynamically adjust the height of the sprinkler 2, so that the cooling water can cover different parts of the tank body surface more accurately, ensuring a uniform cooling effect, avoiding local overheating and the processing defects caused by it. By setting a driving mechanism 11 to control the sliding of the lifting device 3, the height adjustment of the sprinkler 2 is more stable and efficient, and the optimized design of the driving mechanism 11 reduces the kinetic energy demand of the lifting device 3 during the height adjustment process, thereby effectively reducing the overall processing cost while ensuring the adjustment accuracy of the sprinkler 2.

[0035] Working principle: In order to facilitate the reciprocating spraying of cooling liquid on the tank during the processing and meet the processing requirements, a lifting device 3 is provided in the shell 1, and the lifting device 3 is used to drive the sprinkler 2 to perform a reciprocating spraying operation, thereby performing necessary cooling and flushing on the tank; The lifting device 3 includes a sector gear 31 rotatably arranged in the housing 1, and two sector gears 31 are symmetrically arranged in the housing 1. A sliding block 32 is slidably arranged between the two sector gears 31. A rack is arranged on the sliding block 32. The sliding block 32 is meshed with the two sector gears 31 through the rack. The two sector gears 31 are alternately meshed and connected with the sliding block 32, so that the sliding block 32 performs a reciprocating up and down movement in the housing 1. A first fixed plate 101 is arranged on the sliding block 32, and a second fixed plate 102 is arranged at the bottom of the sprinkler 2. A base 7 is also slidably arranged in the housing 1, and a connecting rod 6 is arranged on the base 7. The base 7 is connected to the first fixed plate 101 through the connecting rod 6. The second fixed plate 102 is slidably arranged on the base 7, so that when the sliding block 32 performs reciprocating sliding, it can drive the sprinkler 2 to perform reciprocating motion; In order to drive the sector gear 31 to rotate, a driving mechanism 11 is also provided in the housing 1. The driving mechanism 11 includes a first gear 111 rotatably provided in the housing 1. The first gear 111 is connected to the output end of the external motor. Two second gears 112 are also rotatably provided in the housing 1. The two second gears 112 are symmetrically provided on both sides of the first gear 111. The two sector gears 31 are respectively provided on the two second gears 112. The first gear 111 is respectively meshed with the two second gears 112. The first gear 111 is driven by the external motor to rotate. The wheel 111 drives the two second gears 112 to rotate, thereby driving the two sector gears 31 to rotate, and then driving the sliding block 32 to slide back and forth in the shell 1. In order to make the sprinkler 2 more stable when sliding, an adjustment mechanism 8 is also provided on the shell 1. The adjustment mechanism 8 includes a guide rail 81 provided on the shell 1, and a protrusion 82 is provided on the second fixed plate 102. The protrusion 82 is adapted to the guide rail 81 and is slidably provided in the guide rail 81. Through the cooperation of the guide rail 81 and the protrusion 82, the sprinkler 2 can slide more stably.

[0036] Embodiment 2: This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 3 and Figure 5 , the housing 1 is also provided with an adjustment mechanism 8, and the adjustment mechanism 8 is used to adapt the sliding of the sprinkler 2; The adjustment mechanism 8 includes a guide rail 81 arranged on the housing 1 , and a protrusion 82 is arranged on the second fixing plate 102 . The protrusion 82 is slidably arranged in the guide rail 81 .

[0037] A resisting block 83 is also disposed in the guide rail 81 . The resisting block 83 is disposed on one side of the guide rail 81 . The resisting block 83 is used to resist the protrusion 82 for displacement.

[0038] The base 7 is also provided with a sliding mechanism 9, and the second fixing plate 102 is slidably provided on the base 7 through the sliding mechanism 9; The sliding mechanism 9 includes a sliding groove 91 formed on the base 7 . A sliding block 92 is disposed on the second fixing plate 102 . The sliding block 92 is slidably disposed in the sliding groove 91 .

[0039] A positioning rod 93 is also provided in the sliding groove 91 , and the sliding block 92 is slidably provided on the positioning rod 93 . A resisting spring 94 is also provided on the sliding block 92 , and the sliding block 92 is elastically connected to the base 7 via the resisting spring 94 .

[0040] In this embodiment: During the cylinder body processing, cooling and flushing are necessary processes due to the high temperature generated by the processing. However, if the operation is improper, stress concentration will occur on the surface of the cylinder body, thereby affecting its structural integrity. The distance between the sprinkler 2 and the cylinder body is dynamically controlled by the adjustment mechanism 8, so that the distance between the sprinkler 2 and the cylinder body can be changed during operation, thereby achieving the purpose of controlling the cooling intensity, and a sliding mechanism 9 is provided between the second fixed plate 102 and the base 7. The sliding mechanism 9 further enhances the stability of the sprinkler 2 when sliding due to the adjustment mechanism 8. The sliding mechanism 9 not only ensures the smooth operation of the sprinkler 2 during the adjustment process, but also has an automatic reset function, so that the sprinkler 2 can automatically return to its original position after completing the cooling and flushing tasks, avoiding the stress changes on the cylinder body surface caused by long-term close-range flushing, while reducing the use of transmission parts and saving the device cost.

[0041] Working principle: In order to allow the sprinkler 2 to change the distance from the cylinder body during the sliding process, a plurality of abutment blocks 83 are provided in the guide rail 81, and there is a certain distance between each abutment block 83, so that when the protrusion 82 slides in the guide rail 81, the gap is abutted by the abutment block 83, and then it approaches the processing cylinder body, so that the sprinkler 2 can better rinse the surface of the cylinder body, remove stains and quickly cool down.

[0042] At the same time, in order to meet the position adjustment of the first fixed plate 101, a sliding mechanism 9 is also provided on the base 7, and the second fixed plate 102 is slidably connected to the base 7 through the sliding mechanism 9; The sliding mechanism 9 includes a sliding groove 91 opened on the base 7, and a slider 92 adapted to the sliding groove 91 is arranged at the bottom of the second fixed plate 102. The slider 92 is slidably arranged in the sliding groove 91. Through the cooperation of the slider 92 and the sliding groove 91, the second fixed plate 102 can slide on the base 7, thereby satisfying the requirement of the adjustment mechanism 8 to drive the sprinkler 2 to change its position.

[0043] At the same time, in order to make the second fixed plate 102 slide more stably on the base 7, a positioning rod 93 is also provided in the sliding groove 91, and the slider 92 is slidably set on the positioning rod 93. The positioning rod 93 makes the slider 92 more stable when sliding in the sliding groove 91. At the same time, in order to enable the sprinkler 2 to be reset, a resistance spring 94 is also provided on the slider 92. The slider 92 is also elastically connected to the base 7 through the resistance spring 94, and the resistance spring 94 is used to push the second fixed plate 102 to slide on the base 7 for reset.

[0044] Embodiment 3: This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 2 - Figure 4, a guide mechanism 4 is also provided in the sliding block 32, and the guide mechanism 4 is used to guide the sliding block 32; The guide mechanism 4 includes a guide groove 41 formed in the sliding block 32 . A guide rod 42 is disposed in the housing 1 . The guide rod 42 is slidably disposed in the guide groove 41 .

[0045] A limiting mechanism 5 is also provided in the sliding block 32 . The limiting mechanism 5 includes a limiting groove 51 provided in the sliding block 32 . The limiting block 52 is provided on the guide rod 42 . The limiting block 52 is slidably provided in the limiting groove 51 .

[0046] In this embodiment: by setting the guide mechanism 4, the sliding stability of the sliding block 32 in the shell 1 is improved. By reducing the friction and wear between the sliding block 32 and the shell 1, the guide mechanism 4 can reduce the failure rate during the operation of the equipment and reduce the maintenance cost. In addition, the guide mechanism 4 can also improve the overall accuracy of the device, so that it can maintain a high level of operating performance under different working conditions. By setting the limiting mechanism 5 in the sliding block 32 and utilizing the matching design of the limiting groove 51 and the limiting block 52, the firm connection between the guide rod 42 and the sliding block 32 is ensured, thereby preventing the guide rod 42 from falling off during the sliding process.

[0047] Working principle: Since the sliding block 32 is slidably arranged in the shell 1, in order to make the sliding block 32 slide more stably, a guide mechanism 4 is also arranged in the sliding block 32. The sliding block 32 can slide more stably through the guide mechanism 4. The guide mechanism 4 includes a guide groove 41 opened in the sliding block 32, and a guide rod 42 is arranged in the shell 1. The guide rod 42 is slidably arranged in the guide groove 41, thereby limiting the sliding of the sliding block 32.

[0048] At the same time, in order to prevent the guide rod 42 from falling off from the guide groove 41, a limiting mechanism 5 is also provided in the sliding block 32, and the guide rod 42 is connected to the sliding block 32 through the limiting mechanism 5; The sliding block 32 needs to slide precisely along the guide rod 42. If the connection between the guide rod 42 and the sliding block 32 is not firm enough, it will cause unstable sliding, or even fall off when subjected to external force, thereby affecting the normal operation of the entire device. Through the cooperation of the limit block 52 and the limit groove 51, the sliding connection between the guide rod 42 and the sliding block 32 will not separate due to the sliding distance, thereby preventing the risk of the guide rod 42 falling off during the sliding process.

[0049] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary device for machining a cylinder block of a steam engine, comprising a housing (1), wherein a water sprayer (2) is arranged on the housing (1), and the water sprayer (2) is used to spray water onto the cylinder block being machined, wherein: A lifting device (3) is also provided in the shell (1), and the lifting device (3) is used to drive the sprinkler (2) to slide back and forth on the shell (1); The lifting device (3) comprises a sector gear (31) rotatably arranged in the housing (1), two sector gears (31) are symmetrically arranged in the housing (1), a sliding block (32) is arranged between the two sector gears (31), a rack is arranged on the sliding block (32), the sliding block (32) is respectively meshed with the two sector gears (31) through the rack, and the sprinkler (2) is connected to the sliding block (32).

2. The auxiliary device for machining a steam engine cylinder according to claim 1, characterized in that: A first fixing plate (101) is arranged on the sliding block (32), a second fixing plate (102) is arranged at the bottom of the sprinkler (2), a base (7) is further arranged in the housing (1), a connecting rod (6) is arranged on the base (7), the base (7) is connected to the first fixing plate (101) via the connecting rod (6), and the second fixing plate (102) is slidably connected to the base (7).

3. The auxiliary device for machining a steam engine cylinder according to claim 2, characterized in that: A driving mechanism (11) is also provided in the housing (1), and the driving mechanism (11) is used to drive the two sector gears (31) to rotate; The driving mechanism (11) comprises a first gear (111) rotatably arranged on a housing (1), the first gear (111) being connected to an output end of a motor arranged on the housing (1), a second gear (112) being further arranged in the housing (1), two second gears (112) being arranged in the housing (1), and the two second gears (112) being symmetrically arranged on both sides of the first gear (111), the two second gears (112) respectively meshing with the first gear (111), and the two sector gears (31) being respectively arranged on the two second gears (112).

4. The auxiliary device for machining a steam engine cylinder block according to claim 3, characterized in that: The housing (1) is also provided with an adjustment mechanism (8), and the adjustment mechanism (8) is used to adapt the sliding of the sprinkler (2); The adjustment mechanism (8) comprises a guide rail (81) arranged on the housing (1); a protrusion (82) is arranged on the second fixing plate (102); and the protrusion (82) is slidably arranged in the guide rail (81).

5. The auxiliary device for machining a steam engine cylinder block according to claim 4, characterized in that: A resisting block (83) is also provided in the guide rail (81). The resisting block (83) is provided on one side of the guide rail (81). The resisting block (83) is used to resist the protrusion (82) to move.

6. The auxiliary device for machining a steam engine cylinder block according to claim 5, characterized in that: The base (7) is further provided with a sliding mechanism (9), and the second fixed plate (102) is slidably arranged on the base (7) via the sliding mechanism (9); The sliding mechanism (9) comprises a sliding groove (91) formed on the base (7); a sliding block (92) is provided on the second fixed plate (102); and the sliding block (92) is slidably disposed in the sliding groove (91).

7. The auxiliary device for machining a steam engine cylinder block according to claim 6, characterized in that: A positioning rod (93) is also provided in the sliding groove (91), the sliding block (92) is slidably provided on the positioning rod (93), a resisting spring (94) is also provided on the sliding block (92), and the sliding block (92) is elastically connected to the base (7) via the resisting spring (94).

8. The auxiliary device for machining a steam engine cylinder block according to claim 7, characterized in that: A guide mechanism (4) is also provided in the sliding block (32), and the guide mechanism (4) is used to guide the sliding block (32); The guide mechanism (4) comprises a guide groove (41) provided in the sliding block (32); a guide rod (42) is provided in the housing (1); the guide rod (42) is slidably disposed in the guide groove (41).

9. The auxiliary device for machining a steam engine cylinder block according to claim 8, characterized in that: A limiting mechanism (5) is also provided in the sliding block (32), the limiting mechanism (5) comprising a limiting groove (51) provided in the sliding block (32), a limiting block (52) being provided on the guide rod (42), and the limiting block (52) being slidably provided in the limiting groove (51).

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