CN108787593B - Crankshaft cleaning and drying device and method for diesel engine - Google Patents

Abstract

The invention discloses a device and a method for cleaning and drying a crankshaft for a diesel engine, wherein the device comprises a shell, a cleaning device capable of rotating circumferentially, a clamping device capable of clamping two ends of the crankshaft and driving the crankshaft to rotate, and a drying device; the shell is of a box type structure with an open top surface, the cleaning device is fixed on the shell and horizontally arranged above the shell, the clamping device is fixed above the shell and horizontally arranged above the shell, and the drying device is higher than the clamping device; the invention has the beneficial effects that: the crankshaft is clamped through the clamping device, the crankshaft is cleaned by the cleaning device, the crankshaft is dried by the drying device, the secondary clamping is not needed, the cleaning and the working are completed at one time, the working procedure and the time are saved, the working automation degree is high, and the operation is simple.

Description

Crankshaft cleaning and drying device and method for diesel engine

technical field

The invention relates to a crankshaft device for a diesel engine, in particular to a cleaning and drying device for a crankshaft for a diesel engine.

Background technique

After the crankshaft has been working for a long time, its surface will be contaminated with dust, oil and other impurities. If it is not cleaned in time, it will not only accelerate the wear of the crankshaft, shorten the service life of the crankshaft, but also lead to a decrease in work efficiency. The existing crankshaft cleaning Most of the equipment cleans the main journal and connecting rod journal of the crankshaft, but cannot clean the crankshaft arm. When the crankshaft is put into use again, the oil and dust on the crankshaft arm may cause secondary pollution to the crankshaft and diesel engine. The existing crankshaft cleaning equipment Washing and erasing are basically designed separately and independently. The equipment is too large, which takes up a lot of space and is not easy to move. The sewage after cleaning the crankshaft is directly discharged, resulting in a waste of water resources.

Contents of the invention

The technical problem to be solved by the present invention is to provide a crankshaft cleaning and drying device and method for a diesel engine that solves the problem that the crank arm cannot be cleaned and the equipment volume is too large in the above-mentioned background technology.

The present invention solves the above-mentioned technical problems through the following technical solutions: The present invention discloses a crankshaft cleaning device for a diesel engine, which includes a shell containing cleaning liquid, a cleaning device capable of circular rotation, and capable of clamping both ends of the crankshaft and driving the crankshaft to rotate. clamping device and drying device; the housing is a box structure with an open top surface, the cleaning device is fixed on the housing and placed horizontally above the housing, the clamping device is fixed above the housing and Placed horizontally above the shell, the drying device is higher than the holding device;

The cleaning device includes a drum that runs through the center and a first drive mechanism that drives the drum to rotate. The first drive mechanism is arranged on one side of the housing. The surface of the drum is provided with a spray head and a cleaning piece. The axis of the cleaning device and the axis of the clamping device a distance equal to or less than the distance between the axis of the crankshaft and the axis of the washing device;

The housing is provided with at least two cavities, including a first cavity and a second cavity with a built-in cleaning liquid. A filter plate capable of filtering the cleaning liquid is provided between the first cavity and the second cavity. The cavity is set below the clamping device, and above the first cavity is provided with a plurality of through holes for the return flow of cleaning liquid, the second cavity is set on one side of the first cavity, and a water pump is arranged in the second cavity , the water pump pipe is connected to the drum of the cleaning device;

The clamping device includes a first clamping part capable of adjusting the distance, a second clamping part capable of clamping the crankshaft to be processed, the first clamping part and the second clamping part are arranged oppositely, and the first clamping part, The axes of the second clamping parts are coincident;

Both ends of the drying device are fixed on the supporting device, the drying device includes a bracket, a heating device, and a second drive mechanism that drives the heating device to reciprocate horizontally; the bracket is fixed on the shell, and the heating device is fixed on On the support, the second driving mechanism drives and connects the heating device and is fixed on the support.

Preferably, a third cavity is also included, the third cavity is arranged on the other side of the first cavity, and a partition plate is provided between the third cavity and the first cavity, and the first drive mechanism is partially built into the first cavity. Three cavities.

Preferably, the first driving mechanism includes a first motor, a first driving wheel, a first driven wheel, and a first synchronous belt; the first motor is arranged in the third cavity, and its output shaft extends out of the housing and connects A driving wheel, the first driving wheel is connected with the first driven wheel through the first synchronous belt, and the first driven wheel drives the connection roller.

Preferably, it also includes a support device fixed on the top surface of the housing, the support device includes a first support seat, a second support seat, and a support plate; the first support seat and the support plate are vertically fixed in the second cavity above, the second support seat is vertically fixed above the third cavity, and the two ends of the cleaning device are respectively rotatably connected to the second support seat and the support plate, the first clamping device of the clamping device The part and the second clamping part are respectively fixed on the top surfaces of the first support seat and the second support seat, and both ends of the drying device are respectively fixed on the top surfaces of the first support seat and the second support seat.

Preferably, the cleaning member is a brush, the brushes are evenly arranged on the outer surface of the drum, and the nozzles are evenly arranged on the outer surface of the drum, and the nozzles communicate with the central hole of the drum.

Preferably, the brushes are in a helical structure, the nozzles are arranged in a helical shape, and the helix where the brushes are located intersects with the helix where the nozzles are located at intervals.

Preferably, the first clamping part and the second clamping part are arranged symmetrically, the first clamping part includes a cylinder and a first clamping ring, the cylinder is fixed on the first support base, and the telescopic end of the cylinder is fixedly connected to the first clamping The second clamping part includes a second motor and a second clamping ring, the second motor is fixed on the second supporting base, and the output end of the second motor is connected to the second clamping ring.

Preferably, a support frame is also included, fixed on the second support base, the output end of the second motor passes through the support frame, and is connected with the support frame through a bearing; the telescopic end of the cylinder passes through the upper part of the support plate, and is connected with the support plate bearing connect.

Preferably, the support includes a first vertical plate and a second vertical plate that are symmetrically and fixedly installed on the supporting device and arranged at intervals, and the second drive mechanism includes a third motor, a first lead screw, a second lead screw, a second drive wheel, the second driven wheel, the second synchronous belt, the first nut, the second nut, and the mounting plate; the output end of the third motor passes through the second vertical plate and is fixedly connected with the first screw mandrel, and the other end of the first screw mandrel One end passes through the first vertical plate and is connected with the second driving wheel, the second driving wheel is connected with the second driven wheel through the second synchronous belt, one end of the second screw rod is rotationally connected with the second vertical plate through a bearing, and the other end passes through the The first vertical plate is connected with the second driven wheel, the first nut is connected with the first screw rod, the second nut is connected with the second screw rod, and the mounting plate is horizontally fixed under the first nut and the second nut. The heating device is fixed below the connecting plate.

The present invention also provides a method for cleaning and drying using the crankshaft cleaning and drying device for diesel engines, the specific steps are:

(1) Clamp the crankshaft and drive the crankshaft to rotate, put the crankshaft to be cleaned between the first clamping part and the second clamping part of the clamping device, and adjust the first clamping part to clamp the crankshaft, start The second clamping part is the rotation of the crankshaft to be cleaned;

(2) Clean the crankshaft, start the first driving mechanism, drive the drum to rotate, start the water pump, the cleaning liquid enters the drum along the pipeline from the water pump, and is sprayed out by the nozzle, and cleans the crankshaft with the cleaning parts and cleaning liquid;

(3) Dry the crankshaft. After the cleaning is completed, stop the first driving mechanism and the water pump, start the second driving mechanism, and the heating device will reciprocate horizontally to dry the crankshaft;

(4) Take off the crankshaft, wait for the crankshaft to dry, stop the second driving mechanism, adjust the first clamping part so that it no longer clamps the crankshaft, and then take off the crankshaft.

Compared with the prior art, the present invention has the following advantages:

(1) In the present invention, the crankshaft is clamped by the clamping device, the crankshaft is cleaned by the cleaning device, and the crankshaft is dried by the drying device without secondary clamping, and the cleaning and work are completed at one time, saving procedures and time, And the work has a high degree of automation, simple operation, and can carry out all-round cleaning, and the cleaning is more thorough;

(2) The present invention can completely clean the crankshaft by setting cleaning parts and spray nozzles on the surface of the drum in the cleaning device, so as to prevent the oil and dust on the crank arm from causing damage to the crankshaft and the inside of the diesel engine when the crankshaft is put into use again. secondary pollution;

(3) The drum is designed as a hollow structure, and the water supply is connected through a hose, so there is no need to design a separate washing and wiping device, which ensures a simple and compact design and saves the occupied space;

(4) By opening a through hole on the upper surface of the shell and setting a filter screen inside the shell, the water body is effectively recovered and filtered for reuse, saving and environmental protection, and it is worthy of widespread promotion.

Description of drawings

Fig. 1 is a schematic structural view of a crankshaft cleaning and drying device for a diesel engine according to an embodiment of the present invention;

2 is a schematic structural view of a crankshaft cleaning and drying device for a diesel engine according to an embodiment of the present invention;

Fig. 3 is a top view of the drying device in Fig. 1 .

Symbols in the figure: housing 1, first cavity 11, filter plate 111, through hole 112, second cavity 12, water pump 121, rotary connection ring 1221, hose 122, third cavity 13, partition plate 113 ,

Cleaning device 2, drum 21, nozzle 211, cleaning piece 212, first rotating shaft 213, second rotating shaft 214, first driving mechanism 22, first motor 221, first driving wheel 222, first driven wheel 223, first synchronous with 224,

Clamping device 3, first clamping part 31, cylinder 311, first clamping ring 312, second clamping part 32, second motor 321, second clamping ring 322, support frame 33, drying device 4, Support 41, the first vertical plate 411, the second vertical plate 412, the heating device 42, the second drive mechanism 43, the third motor 431, the first lead screw 432, the second lead screw 433, the second drive wheel 434, the second Driven wheel 435, second synchronous belt 436, first nut 437, second nut 438, mounting plate 439,

The support device 5 , the first support seat 51 , the second support seat 52 , the support plate 53 , and the crankshaft 6 .

Detailed ways

The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

As shown in Figure 1, a crankshaft cleaning device for a diesel engine in this embodiment includes a housing 1 filled with cleaning liquid, a cleaning device 2 capable of circular rotation, and a clamping device capable of clamping both ends of the crankshaft 6 and driving the crankshaft 6 to rotate. Device 3, drying device 4; the housing 1 is a box structure with an open top surface, the cleaning device 2 is fixed on the housing 1 and placed horizontally above the housing 1, and the clamping device 3 is fixed on The top of the housing 1 is placed horizontally above the housing 1, the drying device 4 is higher than the clamping device 3, that is, when cleaning, the clamping device 3 clamps the crankshaft 6 and rotates, and the cleaning device 2 flushes the crankshaft;

The cleaning device 2 includes a drum 21 penetrating through the center and a first driving mechanism 22 for driving the rotation of the drum 21. The first driving mechanism 22 is arranged on one side of the housing 1. The surface of the drum 21 is provided with a nozzle 211 and a cleaning piece 212. The distance between the axis and the axis of the clamping device 3 is equal to or less than the distance between the axis of the crankshaft 6 and the axis of the cleaning device 2. The purpose of this arrangement is that the cleaning device 2 can contact the crankshaft 6 during cleaning, so as not to Too far, insufficient cleaning;

The housing 1 is provided with at least two cavities, including a first cavity 11 and a second cavity 12 with built-in cleaning liquid, and a filter capable of filtering the cleaning liquid is provided between the first cavity 11 and the second cavity 12. The filter plate 111 can filter the impurities in the first cavity 11, the first cavity 11 is arranged below the clamping device 3, and the top of the first cavity 11 is provided with a plurality of through holes 112 for the backflow of cleaning liquid, It is mainly used for the backflow of the cleaning liquid, so that the cleaning liquid can be recycled. In this embodiment, the cleaning liquid is water. The second cavity 12 is arranged on one side of the first cavity 11, and a water pump 121 is arranged in the second cavity 12. The water pump 121 is pipe-connected to the drum 21 of the cleaning device;

The clamping device 3 includes a first clamping part 31 capable of adjusting the distance, a second clamping part 32 capable of clamping the crankshaft 6 to be processed, the first clamping part 31 and the second clamping part 32 are arranged oppositely, and The axes of the first clamping part 31 and the second clamping part 32 coincide. When clamping the crankshaft 6, the crankshaft 6 is pressed against the fixedly arranged second clamping part 32, and the first clamping part 31 is adjusted to clamp the crankshaft. 6;

Both ends of the drying device 4 are fixed on the housing 1, the drying device 4 includes a bracket 41, a heating device 42, and a second drive mechanism 43 that drives the heating device 42 to reciprocate horizontally; the bracket 41 is fixed on On the casing 1 , the heating device 42 is fixed on the bracket 41 , and the second driving mechanism 43 drives and connects the heating device 42 and is fixed on the bracket 41 .

As a further optimization solution, the housing 1 of this embodiment also includes a third cavity 13, the third cavity 13 is arranged on the other side of the first cavity 11, and the gap between the third cavity 13 and the first cavity 11 There is a partition plate 113 between them, and the first driving mechanism 22 is partly built into the third cavity 13;

The first driving mechanism 22 includes a first motor 221, a first driving wheel 222, a first driven wheel 223, and a first synchronous belt 224; the first motor 221 is arranged in the third cavity 13, and its output shaft extends out of the shell The body 1 is connected with the first driving wheel 222 , the first driving wheel 222 is connected with the first driven wheel 223 through the first synchronous belt 224 , and the first driven wheel 223 drives the connection roller 21 .

In summary, as shown in FIG. 2 and in conjunction with FIG. 1 , the inside of the housing 1 is provided with a first cavity 11 , a second cavity 12 and a third cavity 13 ; the first cavity The cavity 11 is located in the middle of the inner side of the housing 1, and the cleaning liquid is installed therein. The first motor 221 is arranged in the third cavity 13, and the first motor 221 is fixedly installed on the upper inner wall of the housing 1, so that One end of the output shaft of the first motor 221 passes through the right wall of the housing 1 and extends to the outside of the housing 1, and is fixedly connected with a first driving wheel 222, and the first driving wheel 222 is connected with a first slave through a first synchronous belt 224. The driving wheel 223, the first driven wheel 223 is arranged on the right side of the second support seat 52 in the support device 5, the left side of the third cavity 13 is provided with a partition plate 113, and the partition plate 113 is connected with the shell The body 1 is integrally arranged; the first cavity 11 is arranged on the left side of the partition plate 113, and the right side of the second cavity 12 is provided with a filter plate 111. The upper, lower, front and rear end surfaces of the filter plate 111 are fixedly connected respectively At the upper, lower, front and rear inner walls of the housing 1; the left side of the filter plate 111 is provided with a second cavity 12, the second cavity 12 is provided with a water pump 121, and the water pump 121 is arranged at the bottom of the housing 1 At the side inner wall, a hose 122 is fixedly connected to the left side of the water pump 121, and one end of the hose 122 is connected to the cleaning device 3;

As an optimization solution of this embodiment, this embodiment also includes a support device 5 fixed on the top surface of the housing 1, and the support device 5 includes a first support seat 51, a second support seat 52, and a support plate 53; The supporting base 51 and the supporting plate 53 are vertically fixed on the top of the second cavity 12, and the second supporting base 52 is vertically fixed on the top of the third cavity 13. The two ends of the cleaning device 2 can rotate respectively. Connected to the second support base 52 and the support plate 53, the first clamping part 31 and the second clamping part 32 of the clamping device 3 are respectively fixed on the top surfaces of the first support base 51 and the second support base 52 , both ends of the drying device 4 are respectively fixed on the top surfaces of the first support base 51 and the second support base 52 .

The first support seat 51 and the third support seat 52 are box-type structures spliced by plates;

The left side of the drum 21 is fixedly connected with a first rotating shaft 213, the right end of the first rotating shaft 213 rotates in the support plate 53 through a bearing, and the left end of the first rotating shaft 213 runs through the first support seat 51 and is rotatably connected with Rotating connecting ring 1221, one end of the rotating connecting ring 1221 is connected with the hose 122, the right end of the drum 21 is fixedly connected with the second rotating shaft 214, the right end of the second rotating shaft 214 passes through the second support base 52 and extends To the right side of the second support base 52 and fixedly connected to the first driven wheel 223 , the first rotating shaft 213 , the second rotating shaft 214 and the rotating connecting ring 1221 are all in a through structure in the middle.

The cleaning member 212 is a brush, and the brush is evenly arranged on the outer surface of the drum 21 , and the nozzle 211 is evenly arranged on the outer surface of the drum 21 , and the nozzle 211 communicates with the central hole of the drum 21 . The brush has a helical structure, and the nozzles 211 are arranged in a helical shape. The helix where the brushes are located and the helix where the nozzles are located are intersected at intervals to make the cleaning more uniform.

As an optimization solution of this embodiment, the first clamping part 31 and the second clamping part 32 are arranged symmetrically, the first clamping part 31 includes a cylinder 311 and a first clamping ring 312, and the cylinder 311 is fixed on the first support On the seat 51, the telescoping end of the cylinder 311 is fixedly connected to the first clamping ring 312, the second clamping part 32 includes a second motor 321 and a second clamping ring 322, and the second motor 321 is fixed on the second support seat 52, The output end of the second motor 321 is connected to the second clamping ring 322 . Also comprise support frame 33, be fixed on the second support base 52, the output end of second motor 321 passes support frame 33, and is connected with support frame 33 by bearing; The telescoping end of cylinder 311 passes support plate 53 tops, and Bearing connection with support plate 53, here support plate 53 has the same effect as support frame 33, plays the role of support.

As an optimized solution of this embodiment, the bracket 41 in the drying device 4 includes a first vertical plate 411 and a second vertical plate 412 that are symmetrically and fixedly installed on the supporting device 5 and arranged at intervals, and the second driving mechanism 43 includes a first Three motors 431, the first leading screw 432, the second leading screw 433, the second driving wheel 434, the second driven wheel 435, the second synchronous belt 436, the first nut 437, the second nut 438, the mounting plate 439; the third The output end of the motor 431 passes through the second vertical plate 412 and is fixedly connected with the first screw mandrel 432, and the other end of the first screw mandrel 432 passes through the first vertical plate 411 and is connected with the second driving wheel 434, and the second driving wheel 434 is connected with the second driven wheel 435 through the second synchronous belt 436, one end of the second screw mandrel 433 is connected with the second vertical plate 412 through the bearing, and the other end is connected with the second driven wheel 435 through the first vertical plate 411, The first nut 437 is connected with the first screw rod 432, the second nut 438 is connected with the second screw rod 433, the mounting plate 439 is horizontally fixed below the first nut 437 and the second nut 438, and the heating device 42 is fixed Below the connecting plate 439, the heating device in this embodiment is a heating fan.

The present invention also provides a method for cleaning and drying using the crankshaft cleaning and drying device for diesel engines, the specific steps are:

(1) clamp the crankshaft 6 and drive the crankshaft 6 to rotate, put the crankshaft 6 to be cleaned between the first clamping part 31 and the second clamping part 32 of the clamping device 3, and adjust the first clamping part 31 Clamp the crankshaft 6, start the second clamping part 32, and rotate the crankshaft 6 to be cleaned;

Specifically, the crankshaft to be cleaned is placed between the first clamping ring 312 and the second clamping ring 322, and the cylinder 311 is activated to expand and contract to adjust the distance between the first clamping ring 312 and the second clamping ring 322. Fix the two ends of the crankshaft to be cleaned, start the second motor 321, and the second motor 321 drives the crankshaft to be cleaned to rotate;

(2) Clean the crankshaft, start the first driving mechanism, drive the drum to rotate, start the water pump, the cleaning liquid enters the drum along the pipeline from the water pump, and is sprayed out by the nozzle, and cleans the crankshaft with the cleaning parts and cleaning liquid;

Specifically, start the first motor 221 to drive the first driving wheel 222 to rotate, and the first driving wheel 222 is connected to the first driven wheel 223 through the first synchronous belt 224, thereby driving the second rotating shaft 214 to rotate, thereby driving the drum 21 to rotate; The water pump 121, the water pump 121 starts to pump water from the second cavity 12, the water body flows upward along the hose 122 on the left side of the water pump 121, and enters the inner side of the drum 21 through the inner side of the first rotating shaft 213, and the water body inside the drum 21 passes through the nozzle 211 spray

The rotation of the drum 21 drives the brush on its surface and the nozzle 211 to rotate, the nozzle 211 sprays water to wash the crankshaft, the brush further cleans the crankshaft, and the cleaned sewage flows into the first cavity 11 again through the through hole on the upper wall of the housing 1 Inside, the water pump 121 pumps water continuously, and the water body in the first cavity 11 flows into the second cavity 12. When the water body passes through the filter plate 111, the filter plate 111 filters the oil and impurities in the water body. The water body is pumped again by the water pump 121 to clean the crankshaft, and the water body is recycled to save and protect the environment;

(3) Dry the crankshaft. After the cleaning is completed, stop the first driving mechanism and the water pump, start the second driving mechanism, and the heating device will reciprocate horizontally to dry the crankshaft;

Specifically, after cleaning is completed, stop the first motor 221 and the water pump 121, start the third motor 431 to rotate forward or reverse, and the third motor 431 drives the first leading screw 432 to rotate forward or reverse, and the first leading screw 432 drives the second driving wheel 434 to rotate forward or reversely, the second driving wheel 434 drives the second driven wheel 435 to rotate forwardly or reversely through the second synchronous belt 436, and the second driven wheel 435 drives the second lead screw 433 to rotate positively To or reverse rotation, thereby realizing the synchronous rotation of the first lead screw 432 and the second lead screw 433, and then make the first nut 437 and the second nut 438 move to the left on the first lead screw 432 and the second lead screw 433 respectively Or move to the right, the first nut 437 and the second nut 438 drive the mounting plate 439 to move left or right, so the heating fan is moved to the left or right, the heating fan is started, and the heating fan moves back and forth to clean the completed crankshaft heating and drying;

(4) Take off the crankshaft, wait for the crankshaft to dry, stop the second drive mechanism, adjust the first clamping part so that it no longer clamps the crankshaft, and then take off the crankshaft;

Specifically, after the drying is completed, the second motor 321 and the third motor 431 are stopped, the cylinder 311 is started to shrink, and the cleaned crankshaft is removed.

Claims (10)

1. The crankshaft cleaning device for the diesel engine is characterized by comprising a shell containing cleaning liquid, a cleaning device capable of rotating circumferentially, a clamping device capable of clamping two ends of a crankshaft and driving the crankshaft to rotate, and a drying device; the shell is of a box type structure with an open top surface, the cleaning device is fixed on the shell and horizontally arranged above the shell, the clamping device is fixed above the shell and horizontally arranged above the shell, and the drying device is higher than the clamping device;

the cleaning device comprises a roller with a penetrating center and a first driving mechanism for driving the roller to rotate, the first driving mechanism is arranged on one side of the shell, a spray head and a cleaning piece are arranged on the surface of the roller, and the distance between the axis of the cleaning device and the axis of the clamping device is equal to or smaller than the distance between the axis of the crankshaft and the axis of the cleaning device;

the shell is internally provided with at least two cavities, including a first cavity and a second cavity which are internally provided with cleaning liquid, a filter plate capable of filtering the cleaning liquid is arranged between the first cavity and the second cavity, the first cavity is arranged below the clamping device, a plurality of through holes for the cleaning liquid to flow back are arranged above the first cavity, the second cavity is arranged on one side of the first cavity, a water pump is arranged in the second cavity, and a water pump pipeline is connected with a roller of the cleaning device;

the clamping device comprises a first clamping part capable of adjusting the distance and a second clamping part capable of clamping a crankshaft to be machined, wherein the first clamping part and the second clamping part are oppositely arranged, and the axes of the first clamping part and the second clamping part are coincident;

the two ends of the drying device are fixed on the supporting device, and the drying device comprises a bracket and a heating device, and a second driving mechanism for driving the heating device to horizontally reciprocate; the support is fixed on the shell, the heating device is fixed on the support, and the second driving mechanism is in driving connection with the heating device and is fixed on the support.

2. The crankshaft cleaning apparatus for a diesel engine according to claim 1, further comprising a third cavity provided on the other side of the first cavity, and a partition plate provided between the third cavity and the first cavity, the first driving mechanism portion being disposed in the third cavity.

3. The crankshaft cleaning apparatus for a diesel engine according to claim 2, wherein the first driving mechanism includes a first motor, a first driving wheel, a first driven wheel, and a first synchronous belt; the first motor is arranged in the third cavity, an output shaft of the first motor extends out of the shell and is connected with the first driving wheel, the first driving wheel is connected with the first driven wheel through a first synchronous belt, and the first driven wheel is in driving connection with the roller.

4. The crankshaft cleaning device for a diesel engine according to claim 2, further comprising a supporting device fixed on the top surface of the housing, wherein the supporting device comprises a first supporting seat, a second supporting seat and a supporting plate; the first supporting seat and the supporting plate are vertically fixed above the second cavity at intervals, the second supporting seat is vertically fixed above the third cavity, two ends of the cleaning device can be respectively and rotatably connected to the second supporting seat and the supporting plate, the first clamping part and the second clamping part of the clamping device are respectively fixed on the top surfaces of the first supporting seat and the second supporting seat, and two ends of the drying device are respectively fixed on the top surfaces of the first supporting seat and the second supporting seat.

5. The crankshaft cleaning device for a diesel engine according to claim 1, wherein the cleaning member is a brush, the brush is uniformly arranged on the outer surface of the drum, the spray head is uniformly arranged on the outer surface of the drum, and the spray head is communicated with the central hole of the drum.

6. The crankshaft cleaning device for diesel engines according to claim 5, wherein the brushes are in a spiral structure, the spray heads are arranged in a spiral shape, and the spiral lines where the brushes are located are alternately arranged in a crossing manner with the spiral lines where the spray heads are located.

7. The crankshaft cleaning device for a diesel engine according to claim 4, wherein the first clamping portion and the second clamping portion are symmetrically arranged, the first clamping portion comprises a cylinder and a first clamping ring, the cylinder is fixed on the first supporting seat, the telescopic end of the cylinder is fixedly connected with the first clamping ring, the second clamping portion comprises a second motor and a second clamping ring, the second motor is fixed on the second supporting seat, and the output end of the second motor is connected with the second clamping ring.

8. The crankshaft cleaning device for a diesel engine according to claim 7, further comprising a support frame fixed to the second support seat, wherein an output end of the second motor passes through the support frame and is connected with the support frame through a bearing; the telescopic end of the air cylinder penetrates through the upper part of the supporting plate and is connected with the supporting plate through a bearing.

9. The crankshaft cleaning device for a diesel engine according to claim 1, wherein the bracket comprises a first vertical plate and a second vertical plate which are symmetrically and fixedly arranged on the supporting device and are arranged at intervals, and the second driving mechanism comprises a third motor, a first lead screw, a second driving wheel, a second driven wheel, a second synchronous belt, a first nut, a second nut and a mounting plate; the output end of the third motor penetrates through the second vertical plate and is fixedly connected with the first screw rod, the other end of the first screw rod penetrates through the first vertical plate and is connected with the second driving wheel, the second driving wheel is connected with the second driven wheel through the second synchronous belt, one end of the second screw rod is rotationally connected with the second vertical plate through a bearing, the other end of the second screw rod penetrates through the first vertical plate and is connected with the second driven wheel, the first nut is matched and connected with the first screw rod, the second nut is matched and connected with the second screw rod, the mounting plate is horizontally fixed below the first nut and the second nut, and the heating device is fixed below the connecting plate.

10. A method for cleaning and drying by adopting the crankshaft cleaning and drying device for the diesel engine, which is characterized by comprising the following specific steps of,

(1) The crankshaft is clamped and driven to rotate, the crankshaft to be cleaned is placed between a first clamping part and a second clamping part of the clamping device, the first clamping part is adjusted to clamp the crankshaft, and the second clamping part is started to rotate the crankshaft to be cleaned;

(2) Cleaning a crankshaft, starting a first driving mechanism, driving a roller to rotate, starting a water pump, enabling cleaning liquid to enter the roller along a pipeline by the water pump, spraying the cleaning liquid by a spray head, and cleaning the crankshaft by using a cleaning piece and the cleaning liquid;

(3) After the crankshaft is dried, stopping the first driving mechanism and the water pump, starting the second driving mechanism, and horizontally reciprocating the heating device to dry the crankshaft;

(4) And taking down the crankshaft, stopping the second driving mechanism after the crankshaft is dried, adjusting the first clamping part to enable the first clamping part not to clamp the crankshaft any more, and then taking down the crankshaft.