Integrated rapid adjusting and supporting device for marine low-speed diesel engine cylinder body

Abstract

An integrated rapid adjusting and supporting device for a marine low-speed diesel engine cylinder body comprises a stage adjusting assembly, a stepless adjusting assembly and a rapid inserting and pulling pin, the stage adjusting assembly and the stepless adjusting assembly are connected into an integrated structure through the rapid inserting and pulling pin, and the stage adjusting assembly achieves step adjustment according to gears through inserting and pulling pin holes located at different heights. Stepless change of the height of the stepless adjusting assembly is achieved through threads, coarse adjustment according to gears of the stage adjusting assembly is matched with stepless fine adjustment of the stepless adjusting assembly, precise adjustment of the supporting height is achieved, and the cylinder body assembly is stably and reliably supported on the exhaust side of the low-speed diesel engine so as to be prevented from rollover caused by center-of-gravity offset. Precise adjustment of the supporting height is achieved, convenient and reliable supporting protection is provided for the cylinder body assembly, and the effects of stepless adjustment, flexible operation, wide application range, convenient loading and transportation and efficiency improvement are achieved.

Description

Technical Field

[0001] The present invention relates to a process equipment for marine low-speed diesel engines, and particularly to an integrated rapid adjustment support device for the cylinder block of marine low-speed diesel engines, belonging to the technical field of marine diesel engine manufacturing. Background Art

[0002] During the assembly process of the diesel engine cylinder block, the center of gravity of the cylinder block assembly 01 is skewed towards the exhaust side. Please refer to Figure 1 , in order to avoid the risk of cylinder block tipping over, supports need to be provided on the exhaust side of the cylinder block.

[0003] The previously used support devices have the following problems: 1) The structure is scattered and needs to be reassembled before each use; 2) The adjustment range is small and cannot be applied to various types of models; 3) The adjustment is difficult and the flange needs to be disassembled and assembled; 4) The weight is relatively large and it is not convenient for transportation.

[0004] Therefore, a rapid adjustment support device is needed to support the cylinder block assembly during the assembly operation. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: to overcome the deficiencies of the existing cylinder block support devices, and provide an integrated rapid adjustment support device for the cylinder block of marine low-speed diesel engines. By adopting an integrated structure, during the production and assembly process, it provides convenient and reliable support and protection for the cylinder block assembly, achieving the effects of stepless adjustment, flexible operation, wide application range, convenient shipping and handling, and improved efficiency.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0007] An integrated rapid adjustment support device for the cylinder block of marine low-speed diesel engines is arranged between the lower plane of the exhaust side of the low-speed diesel engine and the lower plane of the cylinder block assembly. It is characterized in that: the rapid adjustment support device includes a stage adjustment component, a stepless adjustment component and a quick plug pin;

[0008] The stage adjustment component stands on the lower plane of the exhaust side of the low-speed diesel engine and is provided with a plurality of plug pin holes at different heights. The stepless adjustment component is connected to the upper part of the stage adjustment component and can move up and down to adjust the height of the connection position. The stepless adjustment component is provided with plug pin holes and can achieve stepless change of its own height through threads, and supports the lower plane of the cylinder block assembly with its top. The quick plug pin is inserted into the plug pin holes of the stage adjustment component and the stepless adjustment component at the same time to connect them into an integrated structure. By inserting the quick plug pin into the plug pin holes at different heights of the stage adjustment component, the overall height of the rapid adjustment support device can be adjusted step by step in grades;

[0009] The rapid adjustment support device combines the step-by-step coarse adjustment of the stage adjustment component and the stepless fine adjustment of the stepless adjustment component to achieve precise adjustment of the support height, and stably and reliably supports the cylinder block assembly on the exhaust side of the low-speed diesel engine to prevent the cylinder block assembly from tipping over due to the offset of the center of gravity.

[0010] Further, the stage adjustment component includes a column, a connection base, a connection block, a guide plate, and a positioning pin; the connection block and the connection base are respectively fixedly connected between the upper and lower parts of two parallel and upright columns to form a rectangular three-dimensional frame. The connection base is located on the lower plane of the exhaust side of the low-speed diesel engine. A plurality of the plug-in pin holes are respectively arranged on the two columns and are arranged at different heights in steps. A plurality of guide plates are symmetrically positioned and oppositely directed and are respectively fixed on the inner sides of the two columns to guide the movement of the stepless adjustment component. The positioning pin is used to positionally connect and fix the column and the connection base to ensure the coaxiality of the plug-in pin holes on the column.

[0011] Further, a lifting hole for lifting the rapid adjustment support device is provided on the column.

[0012] Further, the stepless adjustment component includes a jack and a lifting seat; the lifting seat is arranged between the two columns of the stage adjustment component and can move up and down along the guide plate. The jack is fixedly connected to the lifting seat and can move up and down together with the lifting seat.

[0013] Further, the lifting seat includes a base, a seat plate, and a lifting handle; the seat plate is horizontally fixed on the upper surface of the base, and the lifting handle is horizontally fixed on the base and is used to lift the stepless adjustment component to move up and down within the stage adjustment component; the jack includes a lifting cylinder, a lifting column, a pressing block, a lifting cylinder base, and a rotating handle; the lifting cylinder base is welded to the bottom of the lifting cylinder and is fixed on the seat plate of the lifting seat. The lifting column is threadedly connected to the inner cavity of the lifting cylinder to convert rotational motion into up-and-down linear motion to achieve stepless adjustment of the height. The pressing block is fixedly connected to the top end of the lifting column and is used to support the lower plane of the cylinder block assembly. The rotating handle is connected around the pressing block and is used to push the pressing block to rotate, thereby driving the lifting column to move up and down.

[0014] Further, a horizontal limiting piece is connected to the bottom of the lifting column. The outer diameter of the limiting piece is smaller than the inner diameter of the lifting cylinder and larger than the inner diameter of the thread inside the lifting cylinder to limit the lifting column from rotating and retracting into the threaded end inside the lifting cylinder, thereby ensuring that the lifting column and the lifting cylinder are always in full-section thread fit.

[0015] Further, the thread fit between the lifting post and the lifting cylinder is a trapezoidal thread.

[0016] Further, the pressing block is provided with a waist-shaped counterbore, and the lifting post is provided with a waist-shaped boss. Through the cooperation of the waist-shaped boss and the waist-shaped counterbore, the pressing block drives the lifting post to rotate.

[0017] Further, a threaded inclined hole for installing the rotary handle is provided on the outer peripheral surface of the pressing block. The axis of the threaded inclined hole is inclined downward by an angle from the horizontal, so that the rotary handle has a downward angle after installation. When the pressing block is extremely close to the cylinder block assembly, the rotary handle still has an operating space to apply force to the pressing block to ensure that the pressing block is in close contact with the lower plane of the cylinder block assembly.

[0018] Further, the quick plug-in pin includes a plug-in pin body, a limiting rod, a pressing plate and a limiting screw; the plug-in pin body has a square cross-section, the limiting screw is screwed to the rear part of the plug-in pin body and protrudes from the plug-in pin body to limit the horizontal movement of the plug-in pin body, and the pressing plate is fixedly connected to the front end of the plug-in pin body by screws and presses the limiting rod against the front end of the plug-in pin body. The limiting rod is used to prevent the plug-in pin body from falling off and can rotate around the axis of the plug-in pin body on the vertical plane.

[0019] Further, after the plug-in pin body penetrates into the plug-in pin hole, the length direction of the limiting rod is rotated so that the end of the limiting rod protrudes from the periphery of the square cross-section of the plug-in pin body to prevent the plug-in pin body from falling off.

[0020] Further, a circular boss is provided at the center of the limiting rod, and a boss round hole is provided at the center of the pressing plate. The circular boss is inserted into the boss round hole, so that the limiting rod can rotate around the center.

[0021] Further, the length of the limiting rod is greater than the side length of the square cross-section of the plug-in pin body and less than the diagonal length of the square cross-section.

[0022] Another technical solution of the present invention is:

[0023] A support method for a marine low-speed diesel engine cylinder block realized by the above-mentioned quick-adjusting support device, which includes the following specific steps:

[0024] 1) Transport the quick-adjusting support device to the lower plane on the exhaust side of the low-speed diesel engine below the cylinder block assembly;

[0025] 2) Lift the stepless adjustment component to a suitable gear height;

[0026] 3) Rotate the limiting rod on the quick plug - pin to a state where the end of the limiting rod does not protrude beyond the periphery of the square cross - section of the plug - pin body. Then, with the end of the quick plug - pin where the limiting rod is installed as the front end, insert the quick plug - pin into the plug - pin holes on the stage adjustment component and the stepless adjustment component simultaneously. Next, move the limiting rod back to a position where its end protrudes beyond the periphery of the square cross - section of the plug - pin body to ensure that the quick plug - pin is limited and does not fall off.

[0027] 4) Rotate the rotating handle on the stepless adjustment component to drive the lifting column upward until the pressing block contacts the lower plane of the cylinder block assembly. Then, use the rotating handle to apply additional force to continue lifting the lifting column upward to ensure that the pressing block is in close contact with the lower plane of the cylinder block assembly, so that the cylinder block assembly is stably and reliably supported on the exhaust side of the low - speed diesel engine.

[0028] Compared with the prior art, the present invention has achieved the following beneficial effects:

[0029] 1) The quick - adjustment support device combines the step - by - step coarse adjustment of the stage adjustment component and the stepless fine adjustment of the stepless adjustment component, realizing the precise adjustment of the support height, taking into account both the adjustment efficiency and accuracy of the support device, and improving the operation efficiency.

[0030] 2) After the rotating handle is installed, it has a downward angle. When the pressing block is extremely close to the cylinder block assembly, there is still an operating space for the rotating handle to apply force to the pressing block, thus ensuring the close contact between the pressing block and the lower plane of the cylinder block assembly, achieving the effect of stably and reliably supporting the cylinder block assembly.

[0031] 3) The quick plug - pin adopts a rotatable limiting rod and a limiting screw, and the plug - pin body has a square cross - section, thus realizing the limiting and anti - detachment functions of the quick plug - pin, and achieving the effect of reliably connecting the stage adjustment component and the stepless adjustment component.

[0032] 4) The present invention as a whole adopts an integrated structure, eliminating the need for re - assembly before each use, greatly reducing the preparatory work before assembly.

[0033] 5) The step - by - step coarse - adjustment structure of the stage adjustment component cooperates with the stepless fine - adjustment structure of the stepless adjustment component, expanding the adjustment range of the support device, making it applicable to various types of models, expanding the applicable range, and reducing the tooling production cost.

[0034] 6) The present invention adopts an integrated structure, is made of lightweight steel structure as a whole, and is equipped with lifting holes, which can be transported by manual handling or wall - mounted hoisting.

[0035] 7) The connection setting of the quick plug - pin makes the adjustment operation of the support device more convenient.

[0036] In summary, the present invention realizes precise adjustment of the support height, provides convenient and reliable support protection for the cylinder block assembly, and achieves the effects of stepless adjustment, flexible operation, wide application range, convenient shipment, and improved efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a usage state diagram of the present invention.

[0038] Figure 2 It is a structural schematic diagram of the present invention.

[0039] Figure 3 It is a perspective view of the present invention.

[0040] Figure 4 It is a structural schematic diagram of the stage adjustment component.

[0041] Figure 5 It is a schematic diagram of the connection base.

[0042] Figure 6 It is a schematic diagram of the column.

[0043] Figure 7 It is a schematic diagram of the connection block.

[0044] Figure 8 It is a schematic diagram of the guide plate.

[0045] Figure 9 It is a structural schematic diagram of the stepless adjustment component.

[0046] Figure 10 It is a cross-sectional view of the stepless adjustment component.

[0047] Figure 11 It is a cross-sectional view of the lifting cylinder.

[0048] Figure 12 It is a schematic diagram of the lifting column.

[0049] Figure 13 It is a cross-sectional view of the pressing block.

[0050] Figure 14 For Figure 13 elevation view.

[0051] Figure 15 It is a schematic diagram of the lifting cylinder base.

[0052] Figure 16 It is a schematic diagram of the rotating handle.

[0053] Figure 17 It is a schematic diagram of the limit piece.

[0054] Figure 18 It is a schematic diagram of the seat plate.

[0055] Figure 19 It is a schematic diagram of the base.

[0056] Figure 20 It is a schematic diagram of the lifting handle.

[0057] Figure 21 It is a schematic structural diagram of the quick-release pin.

[0058] Figure 22 It is a schematic diagram of the plug body.

[0059] Figure 23 It is a schematic diagram of the pressure plate.

[0060] Figure 24 It is a schematic diagram of the limit rod.

[0061] In the figure, 01—cylinder block assembly, 02—quick adjustment support device, 021—stage adjustment component, 022—stepless adjustment component, 1—lifting seat, 2—jack, 3—quick-release pin, 4—column, 5—connecting base, 6—connecting block, 7—guide plate, 8—positioning pin, 9—lifting cylinder, 10—lifting column, 11—pressure block, 12—lifting cylinder base, 13—rotating handle, 14—base, 15—seat plate, 16—limit piece, 17—lifting handle, 31—plug body, 32—limit rod, 33—pressure plate, 34—limit screw, 41—pin hole, 42—lifting hole, 43—base bolt hole, 44—connecting block bolt hole, 45—guide plate bolt hole, 46—positioning pin hole, 51—column bolt hole, 52—positioning pin hole, 61—column threaded hole, 71—column fixing hole, 91—trapezoidal internal thread, 92—light hole, 101—waist-shaped boss, 102—pressure block threaded hole, 103—trapezoidal external thread, 111—waist-shaped counterbore, 112—lifting column connection hole, 113—threaded inclined hole, 121—through hole, 122—seat plate bolt hole, 131—thread, 141—quick-release pin hole, 161—fixing hole, 311—limit screw hole, 321—circular boss, 331—fixing screw hole, 332—boss round hole. Detailed implementation manners

[0062] The present invention will be further specifically described in detail below with reference to the accompanying drawings and embodiments, but the scope of protection required by the present invention cannot be limited thereby.

[0063] The present invention is used for supporting the cylinder block assembly during the assembly operation of marine low-speed diesel engines.

[0064] Please refer to Figure 1 , Figure 2 and Figure 3, the quick-adjustment support device 02 is arranged on the lower plane on the exhaust side of the low-speed diesel engine, and includes a stage adjustment component 021 at the lower part, a stepless adjustment component 022 at the upper part, and a quick plug-in pin 3 connecting the two. The stage adjustment component 021 is used to roughly adjust the support height in a stepped and graded manner, and the stepless adjustment component 022 is used to finely adjust the support height steplessly to ensure that the quick-adjustment support device 02 is closely attached to the lower plane of the cylinder block assembly 01. The quick plug-in pin 3 is used to connect the stage adjustment component 021 and the stepless adjustment component 022. The above combination forms an integral structure, taking into account both the efficiency and accuracy of support adjustment. The adjustable range of the quick-adjustment support device 02 is between 740 mm and 1447 mm, and it can adapt to cylinder block assemblies 01 of various models.

[0065] Please refer to Figure 4 , the stage adjustment component 021 includes: a column 4, a connection base 5, a connection block 6, a guide plate 7, and a positioning pin 8. The connection base 5 is located at the bottommost part and is seated on the lower plane on the exhaust side of the low-speed diesel engine. Two columns 4 are vertically connected to both sides of the connection base 5 by bolts. Two connection blocks 6 are connected between the upper parts of the two columns 4 by bolts. The column 4, the connection base 5, and the connection block 6 form a rectangular three-dimensional frame; there are four guide plates 7, which are vertically fixed to the inner sides of the two columns 4 by bolts to guide the movement of the stepless adjustment component 2 to prevent slipping. The four guide plates 7 are respectively connected to the two columns 4 in pairs and are symmetrically positioned and opposite in direction; the column 4 and the connection base 5 are also positioned by the positioning pin 8 to ensure the coaxiality of the plug-in pin holes on the column 4 to ensure smooth insertion and extraction of the quick plug-in pin 3. The positioning pin 8 is a split pin.

[0066] Please refer to Figure 5 , the connection base 5 is made of H-shaped steel, and it is provided with a positioning pin hole 52 and a column bolt hole 51.

[0067] Please refer to Figure 6 , the column 4 is made of T-shaped steel. The T-shaped steel has relatively comprehensive compressive and bending resistance performance and a unit weight less than that of the H-shaped steel. It is provided with a plug-in pin hole 41, a lifting hole 42, a base bolt hole 43, a connection block bolt hole 44, a guide plate bolt hole 45, and a positioning pin hole 46. There are multiple plug-in pin holes 41, which are distributed at different height positions. The plug-in pin holes 41 on the two columns 4 are in the same position so that the quick plug-in pin 3 is in a horizontal position when inserted.

[0068] Please refer to Figure 7 , the connection block 6 is made of steel plate, and it is provided with a horizontal column threaded hole 61.

[0069] Please refer to Figure 8, the guide plate 7 is made of angle steel, and a column fixing hole 71 is provided thereon.

[0070] Please refer to Figure 9 , the stepless adjustment assembly 022 includes a jack 2 and a lifting seat 1; the lifting seat 1 is arranged between two columns 4 of the stage adjustment assembly 021 and can move up and down along the guide plate 7. The jack 2 is fixedly connected to the lifting seat 1 by bolts and can move up and down together with the lifting seat 1. Once it is necessary to repair the stepless adjustment assembly 022, only the connection bolts between the jack 2 and the lifting seat 1 need to be removed, realizing modular assembly.

[0071] Please refer to Figure 10 , the lifting seat 1 includes a base 14, a seat plate 15 and a lifting handle 17; the seat plate 15 is horizontally and fixedly connected to the upper surface of the base 14 by welding, and the lifting handle 17 is horizontally welded to the base 14 for manually lifting the stepless adjustment assembly 022 to move up and down in the stage adjustment assembly 021.

[0072] Please refer to Figure 10The jack 2 includes a lifting cylinder 9, a lifting column 10, a pressure block 11, a lifting cylinder base 12, a rotating handle 13 and a limit plate 16. The lifting cylinder base 12 is fixedly connected to the bottom of the lifting cylinder 9 by welding, and is fixed to the seat plate 15 of the lifting seat 1 by bolts; the lifting column 10 is connected to the inner cavity of the lifting cylinder 9 by a trapezoidal thread and can be lifted and lowered by rotation. The trapezoidal thread has a strong bearing capacity and is suitable for low-speed and heavy-load occasions used by the quick adjustment support device, and can convert rotational motion into linear motion to achieve stepless adjustment; the limit plate 16 is connected to the bottom of the lifting column 10 through the fixing hole 161 and the screw thereon. The outer diameter of the limit plate 16 is smaller than the inner diameter of the lifting cylinder 9 and larger than the inner diameter of the trapezoidal thread inside the lifting cylinder 9, so as to ensure that the threaded fit between the lifting column 10 and the lifting cylinder 9 is always complete and full, ensuring the bearing capacity; the pressure block 11 is connected to the lifting column through the lifting column connection hole 112 and The screw is fixed to the top of the lifting column 10, and it supports the lower plane of the cylinder assembly 01 during the supporting work. The pressure block 11 uses the waist-shaped countersunk hole 111 thereon and the waist-shaped boss 101 on the lifting column 10 to limit the relative axial rotation between the pressure block 11 and the lifting column 10; the rotating handle 13 is connected with the threaded inclined hole 113 on the pressure block 11 by the thread 131 thereon, so as to push the pressure block 11 to rotate, thereby driving the lifting column 10 to adjust the height by the trapezoidal thread; at the same time, the rotating handle 13 has a downward angle when installed, which can ensure that when the pressure block 11 is very close to or has already contacted the lower plane of the cylinder assembly 01, the rotating handle 13 can still be used to apply force to continue to rotate the pressure block 11 so that it is in close contact with the lower plane of the cylinder assembly 01.

[0073] See also Figure 11 The lifting cylinder 9 is made of a steel pipe, the upper part of the inner cavity is a trapezoidal internal thread 91, and the lower part is a light hole 92.

[0074] See also Figure 12 The lifting column 10 is made of a steel bar, and the circumferential surface is entirely formed with trapezoidal external threads 103 . A waist-shaped boss 101 is formed on the top and a pressing block threaded hole 102 is formed. A bolt hole for connecting the limit plate 16 is formed on the bottom.

[0075] Please refer to Figure 13 and Figure 14 The pressing block 11 is a circular steel plate, and a threaded oblique hole 113 is opened on the circumferential surface for installing the rotating handle 13. The axis of the threaded oblique hole 113 is tilted downward from the horizontal at an angle, so that when the downwardly tilted rotating handle 13 is extremely close to the cylinder assembly 01, there is still operating space to apply force to the pressing block 11; the top of the pressing block 11 is provided with a lifting column connecting hole 112, and the bottom is processed with a waist-shaped countersunk hole 111, seeFigure 14 , to cooperate with the waist-shaped boss 101 to transmit the rotational torque of the rotational handle 13 to push the lifting column 1.

[0076] Please refer to Figure 15 , the lifting cylinder base 12 is made of steel plate, with seat plate bolt holes 122 opened at its four corners and a through hole 121 for welding the lifting cylinder 9 in the middle.

[0077] Please refer to Figure 16 , the rotational handle 13 is made of steel rod, and a thread 131 is processed at its end.

[0078] Please refer to Figure 17 , the limit piece 16 is made of steel plate, with a fixing hole 161 opened on it.

[0079] Please refer to Figure 18 , the seat plate 15 is made of steel plate, with lifting cylinder base bolt holes opened on it.

[0080] Please refer to Figure 19 , the base 14 is made of H-shaped steel, and each of the two side walls is provided with a plug-in and pull-out pin hole 141 at the same horizontal position to insert the quick plug-in and pull-out pin 3.

[0081] Please refer to Figure 20 , the lifting handle 17 is made of angle steel.

[0082] Please refer to Figure 21 , the quick plug-in and pull-out pin 3 includes: a plug-in and pull-out pin body 31, a limit rod 32, a pressure plate 33 and a limit screw 34. The plug-in and pull-out pin body 31 has a square cross-section and is simultaneously inserted into the plug-in and pull-out pin holes on the column 4 and the base 14 to fixedly mount the stepless adjustment assembly 022 on the stage adjustment assembly 021; the limit screw 34 is an internal hexagonal screw, horizontally screwed to the rear of the plug-in and pull-out pin body 31 and protruding from the plug-in and pull-out pin body 31 to limit the horizontal movement of the plug-in and pull-out pin body 31; the pressure plate 33 is fixedly connected to the front end of the plug-in and pull-out pin body 31 by screws and presses the limit rod 32 against the front end of the plug-in and pull-out pin body 31. The limit rod 32 can rotate around the axis of the plug-in and pull-out pin body 31 in the vertical plane. When it rotates to the length direction perpendicular to the square perimeter of the plug-in and pull-out pin body 31, the limit rod 32 will protrude from the plug-in and pull-out pin body 31, thereby preventing the plug-in and pull-out pin body 31 from falling off. When the length direction of the limit rod 32 rotates to the diagonal direction of the square of the plug-in and pull-out pin body 31, the limit rod 32 no longer protrudes from the plug-in and pull-out pin body 31, thereby releasing the restriction on the movement of the plug-in and pull-out pin body 31, and the plug-in and pull-out pin body 31 can smoothly penetrate into the plug-in and pull-out pin hole.

[0083] Please refer to Figure 22, the plug-in pin body 31 is made by processing a square steel bar, with a square cross-section, and a transverse limit screw hole 311 is opened at the rear.

[0084] Please refer to Figure 23 , the pressing plate 33 is made by processing a steel plate, a boss round hole 332 is provided at the center, and fixing screw holes 331 for connecting the plug-in pin body 31 are provided on both sides.

[0085] Please refer to Figure 24 , the limit rod 32 is made by processing a steel plate, a circular boss 321 is provided at the center, and is used to insert into the boss round hole 332 of the pressing plate 33, so that the limit rod 32 can rotate around the circular boss 321; the length of the limit rod 32 is greater than the side length of the square cross-section of the plug-in pin body 31 and less than the diagonal length of the square cross-section.

[0086] Please refer to in combination with Figure 1 and Figure 2 , the center of gravity of the low-speed diesel engine cylinder block assembly 01 is skewed towards the exhaust side. During the assembly operation, in order to avoid the risk of the cylinder block tipping over, the quick-adjusting support device 02 is placed on the lower plane of the exhaust side of the low-speed diesel engine, and by combining the step-by-step coarse adjustment of the step-adjusting component 022 and the stepless fine adjustment of the stepless adjustment component 021, the precise adjustment of the support height is realized, and the cylinder block assembly 01 is stably and reliably supported on the exhaust side of the low-speed diesel engine to prevent the cylinder block assembly 01 from tipping over due to the center-of-gravity offset.

[0087] The usage method of the quick-adjusting support device includes the following specific steps:

[0088] 1. Use the lifting hole 42 on the step-adjusting component 022, or directly use a trolley to transfer the quick-adjusting support device 02 to the lower plane of the exhaust side of the low-speed diesel engine below the corresponding cylinder block assembly 01.

[0089] 2. Use the lifting handle 17 on the stepless adjustment component 021 to lift the stepless adjustment component 021 to the height of the corresponding gear.

[0090] 3. Rotate the limit rod 32 on the quick plug-in pin 3 to the direction along the diagonal of the square cross-section of the plug-in pin body 31, then insert the quick plug-in pin 3 into the plug-in pin holes on the step-adjusting component 022 and the stepless adjustment component 021 at the same time, and then turn the limit rod 32 back to the position perpendicular to the side length of the square cross-section of the plug-in pin body 31 to ensure that the quick plug-in pin 3 is limited and does not fall off.

[0091] 4. Rotate the rotary handle 13 on the stepless adjustment assembly 021 to lift the lifting column 10 upward until the pressing block 11 contacts the lower plane of the cylinder block assembly 01. Then apply force with the rotary handle 13 to continue lifting the lifting column 10 upward to ensure that the pressing block 11 is in close contact with the lower plane of the cylinder block assembly 01, so that the cylinder block assembly 01 is stably and reliably supported on the exhaust side of the low-speed diesel engine.

[0092] The quick-adjustment support device takes into account both the adjustment efficiency and accuracy. The height adjustment range is between 740 mm and 1447 mm, and it can be applied to various cylinder blocks with different specifications and weights of different engine models.

[0093] The scope of protection required by the present invention is not limited to the above embodiments, but should also include other obvious transformations and alternative solutions to the present invention.

Claims

1. An integrated quick-adjustment support device for a cylinder block of a low-speed marine diesel engine, arranged between the lower plane of the exhaust side of the low-speed diesel engine and the lower plane of the cylinder block assembly, characterized in that: The quick adjustment support device comprises a stage adjustment component, a stepless adjustment component and a quick plug-in pin; The stage adjustment component is erected on the lower plane of the exhaust side of the low-speed diesel engine, and is provided with a plurality of plug-in pin holes at different heights. The stepless adjustment component is connected to the upper part of the stage adjustment component and can be moved up and down to adjust the height of the connection position. The stepless adjustment component is provided with a plug-in pin hole and can achieve stepless change of its own height through threads, and supports the lower plane of the cylinder assembly with the top end. The quick plug-in pin is inserted into the plug-in pin holes of the stage adjustment component and the stepless adjustment component at the same time to connect them into an integrated structure. The quick plug-in pin is inserted into the plug-in pin holes of different heights of the stage adjustment component to achieve step-by-step adjustment of the overall height of the quick-adjustment support device; The quick-adjustment support device combines the coarse adjustment of the stage adjustment component and the stepless fine adjustment of the stepless adjustment component to achieve precise adjustment of the support height, stably and reliably supporting the cylinder assembly on the exhaust side of the low-speed diesel engine to prevent the cylinder assembly from tipping over due to the offset of the center of gravity.

2. The integrated quick-adjusting support device for a cylinder block of a low-speed marine diesel engine according to claim 1, characterized in that: The stage adjustment component includes a column, a connecting base, a connecting block, a guide plate and a positioning pin; the connecting block and the connecting base are respectively fixedly connected between the upper and lower parts of two parallel upright columns to form a rectangular three-dimensional frame, and the connecting base is located on the lower plane of the exhaust side of the low-speed diesel engine. A plurality of plug-in pin holes are respectively arranged on the two columns and arranged at different heights in stages. A plurality of guide plates are symmetrically positioned and relatively fixed on the inner sides of the two columns to guide the movement of the stepless adjustment component. The positioning pin positions, connects and fixes the column and the connecting base to ensure the coaxiality of the plug-in pin holes on the column.

3. The integrated quick-adjusting support device for a cylinder block of a low-speed marine diesel engine according to claim 2, characterized in that: The upright column is provided with a lifting hole for lifting the quick-adjusting support device.

4. The integrated quick-adjusting support device for a cylinder block of a low-speed marine diesel engine according to claim 2, characterized in that: The stepless adjustment component includes a jack and a lifting seat; the lifting seat is arranged between the two columns of the stage adjustment component and can move up and down along the guide plate, and the jack is fixedly connected to the lifting seat and can move up and down with the lifting seat.

5. The integrated quick-adjusting support device for a cylinder block of a low-speed marine diesel engine according to claim 4, characterized in that: The lifting seat includes a base, a seat plate and a lifting handle; the seat plate is horizontally fixed on the top of the base, and the lifting handle is transversely fixed on the base, and is used to lift the stepless adjustment component to move up and down in the stage adjustment component; the jack includes a lifting cylinder, a lifting column, a pressure block, a lifting cylinder base and a rotating handle; the lifting cylinder base is welded to the bottom of the lifting cylinder and fixed to the seat plate of the lifting seat, the lifting column is connected to the inner cavity of the lifting cylinder by threads, and converts the rotational motion into up and down linear motion to achieve stepless height adjustment, the pressure block is fixedly connected to the top of the lifting column, and is used to support the lower plane of the cylinder assembly, and the rotating handle is connected around the pressure block to push the pressure block to rotate, thereby driving the lifting column to achieve up and down movement.

6. The integrated quick-adjusting support device for a cylinder block of a low-speed marine diesel engine according to claim 5, characterized in that: A horizontal limit plate is connected to the bottom of the lifting column, and the outer diameter of the limit plate is smaller than the inner diameter of the lifting cylinder and larger than the inner diameter of the thread inside the lifting cylinder, so as to limit the threaded end of the lifting column from rotating and retracting into the lifting cylinder, thereby ensuring that the lifting column and the lifting cylinder are always in full thread fit.

7. The integrated quick-adjusting support device for a cylinder block of a low-speed marine diesel engine according to claim 5, characterized in that: The threaded connection between the lifting column and the lifting cylinder is a trapezoidal thread.

8. The integrated quick-adjusting support device for a cylinder block of a low-speed marine diesel engine according to claim 5, characterized in that: The pressing block is provided with a waist-shaped countersunk hole, and the lifting column is provided with a waist-shaped boss. Through the cooperation between the waist-shaped boss and the waist-shaped countersunk hole, the pressing block drives the lifting column to rotate.

9. The integrated quick-adjusting support device for a cylinder block of a low-speed marine diesel engine according to claim 5 or 8, characterized in that: A threaded oblique hole for mounting the rotating handle is provided on the outer peripheral surface of the pressing block, and the axis of the threaded oblique hole is inclined downward from the horizontal at an angle so that the rotating handle has a downward angle after installation. When the pressing block is extremely close to the cylinder assembly, the rotating handle still has operating space to apply force to the pressing block to ensure that the pressing block is in close contact with the lower plane of the cylinder assembly.

10. The integrated quick-adjusting support device for a cylinder block of a low-speed marine diesel engine according to claim 9, characterized in that: The quick plug-in pin includes a plug-in pin body, a limit rod, a pressure plate and a limit screw; the plug-in pin body has a square cross-section, the limit screw is screwed to the rear of the plug-in pin body and protrudes from the plug-in pin body to limit the horizontal movement of the plug-in pin body, the pressure plate is fixedly connected to the front end of the plug-in pin body by a screw and presses the limit rod to the front end of the plug-in pin body, the limit rod is used to prevent the plug-in pin body from falling off and can rotate around the axis of the plug-in pin body in a vertical plane.

11. The integrated quick-adjusting support device for a cylinder block of a low-speed marine diesel engine according to claim 10, characterized in that: After the plugging pin body is inserted into the plugging pin hole, the limit rod is rotated in the length direction until the end of the limit rod protrudes from the periphery of the square cross section of the plugging pin body to prevent the plugging pin body from falling off.

12. The integrated quick-adjusting support device for a cylinder block of a low-speed marine diesel engine according to claim 10, characterized in that: A circular boss is provided at the center of the limiting rod, and a boss circular hole is provided at the center of the pressing plate. The circular boss is inserted into the boss circular hole, so that the limiting rod can rotate around the center.

13. The integrated quick-adjusting support device for a cylinder block of a low-speed marine diesel engine according to claim 10, characterized in that: The length of the limiting rod is greater than the side length of the square cross section of the plug-in pin body, and less than the diagonal length of the square cross section.

14. A method for supporting a cylinder block of a low-speed marine diesel engine using the fast-adjusting support device of claim 10, characterized in that: The supporting method comprises the following specific steps: 1) transporting the quick adjustment support device to the lower plane of the exhaust side of the low-speed diesel engine below the cylinder assembly; 2) lifting the stepless adjustment assembly to a height of a suitable gear; 3) Rotate the limiting rod on the quick plug-in pin to a state where the end of the limiting rod does not protrude from the periphery of the square cross section of the plug-in pin body, then insert the quick plug-in pin into the plug-in pin holes on the step adjustment component and the stepless adjustment component with the end on which the limiting rod is installed as the front end, and then push the limiting rod back to a position where the end of the limiting rod protrudes from the periphery of the square cross section of the plug-in pin body, to ensure that the quick plug-in pin is limited and does not fall off; 4) Rotate the rotary handle on the stepless adjustment component to drive the lifting column upward until the pressure block contacts the lower plane of the cylinder assembly, and then use the rotary handle to apply force to continue lifting the lifting column upward to ensure that the pressure block fits tightly against the lower plane of the cylinder assembly, so that the cylinder assembly is stably and reliably supported on the exhaust side of the low-speed diesel engine.

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