CN110509050B - Auxiliary device for assisting assembly of engine piston connecting rod and control method thereof - Google Patents
Auxiliary device for assisting assembly of engine piston connecting rod and control method thereof Download PDFInfo
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- CN110509050B CN110509050B CN201910657891.0A CN201910657891A CN110509050B CN 110509050 B CN110509050 B CN 110509050B CN 201910657891 A CN201910657891 A CN 201910657891A CN 110509050 B CN110509050 B CN 110509050B
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- 239000000463 material Substances 0.000 claims 2
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- 238000012986 modification Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
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Abstract
The invention relates to the technical field of engine assembly, in particular to an auxiliary device for assisting in assembling a piston connecting rod of an engine and a control method thereof, the auxiliary device comprises a rotary clamping mechanism and a lifting assembly, a bearing plate is arranged on the rotary clamping mechanism, the rotary clamping mechanism comprises an active rotary assembly and a passive rotary assembly, the lifting assembly comprises a lifting hydraulic cylinder and a lifting slat, an output shaft of the lifting hydraulic cylinder is vertically downward and fixedly connected with the top center of the lifting slat, a slideway is arranged at the bottom of the lifting slat along the length direction of the lifting slat, the active rotary assembly and the passive rotary assembly are in sliding fit with the slideway, and a push-pull hydraulic cylinder with an output direction parallel to the length direction of the lifting slat is arranged beside the lifting slat.
Description
Technical Field
The invention relates to the technical field of engine assembly, in particular to an auxiliary device for assisting in assembling a piston connecting rod of an engine and a control method thereof.
Background
After the crankshaft is installed in the engine cylinder body, the next step is to install the piston connecting rod in the engine cylinder body and install the piston connecting rod and the connecting rod cover on the connecting rod journal of the crankshaft, the piston connecting rod and the connecting rod cover need to be pushed in from the piston cavity, the connecting rod cover needs to be installed on the connecting rod journal by being matched with the piston connecting rod from the crankshaft cavity, the traditional assembly mode needs to be used for placing the engine cylinder body down, then the crankshaft is manually rotated to drive the connecting rod journal, the six-cylinder engine cylinder body needs to rotate the crankshaft for a plurality of times, then the piston connecting rod is installed, the crankshaft is rotated to take manpower, the efficiency of aligning the piston cavity by the connecting rod journal is low, and the installation efficiency of the piston connecting rod is low.
Disclosure of Invention
The invention aims to provide an auxiliary device for assisting in assembling a piston connecting rod of an engine and a control method thereof, so as to solve the problems in the prior art.
The technical scheme of the invention is as follows: the auxiliary device comprises a rotary clamping mechanism used for clamping and driving a crankshaft to rotate and a lifting component used for driving the rotary clamping mechanism to lift, wherein a bearing plate used for bearing an engine cylinder body is arranged on the rotary clamping mechanism, the rotary clamping mechanism comprises a driving rotary component used for driving the crankshaft to rotate and a driven rotary component used for bearing one end of the crankshaft, the bearing plate is arranged on the driven rotary component, the lifting component comprises a lifting hydraulic cylinder and a lifting slat which are arranged horizontally and erected right above the rotary clamping mechanism, an output shaft of the lifting hydraulic cylinder is vertically downward and fixedly connected with the top center of the lifting slat, a slideway is arranged at the bottom of the lifting slat along the length direction of the lifting slat, the driving rotary component and the driven rotary component are in sliding fit with the slideway, a push-pull hydraulic cylinder with the output direction parallel to the length direction of the lifting slat is arranged beside the lifting slat, and the output end and the tail end of the push-pull hydraulic cylinder are hinged with the top of the driving rotary component and the driven rotary component respectively.
Preferably, the initiative rotating assembly is including the main sliding support with slide sliding fit, with main sliding support horizontal running fit's main rotation axis, can be in advance with the rotatory main servo motor of main rotation axis of main joint cover and be used for driving of bent axle one end joint, main servo motor's output shaft passes through the main reducing gear box and is connected with main rotation axis transmission, the axis of main rotation axis is parallel with the central line of slide, main joint cover is fixed at the tip of main rotation axis, be provided with the main buffer cover that can slide in the main joint cover, the edge of main buffer cover is provided with the lug that can with the inboard running fit of main joint cover, the lug is provided with the clearance, is provided with main buffer spring between main rotation axis and the main buffer cover near the one end of main joint cover, and the rotation axis is located self axis and is provided with main rectangular axle and a plurality of leading guide axle that runs through main buffer cover.
Preferably, the passive rotating assembly comprises a secondary sliding support in sliding fit with the slide way, a secondary rotating shaft in horizontal rotation fit with the secondary sliding support, a secondary clamping sleeve which can be clamped with one end of the crankshaft in advance and a secondary servo motor for driving the secondary rotating shaft to rotate, an output shaft of the secondary servo motor is connected with the secondary rotating shaft in a transmission mode through a secondary reduction gearbox, an axis of the secondary rotating shaft is parallel to a central line of the slide way, the secondary clamping sleeve is fixed at the end of the secondary rotating shaft, a secondary buffer cover which can slide is arranged in the secondary clamping sleeve, a secondary buffer spring is arranged between one end of the secondary rotating shaft, close to the secondary clamping sleeve, and a secondary guide shaft penetrating through the secondary buffer cover is arranged on the secondary rotating shaft along the axis of the secondary rotating shaft.
Preferably, the bearing plate is fixedly arranged on the secondary clamping sleeve, the plane of the bearing plate is perpendicular to the axis of the secondary rotating shaft, and bearing blocks for clamping the engine cylinder are fixedly arranged at two ends of the bearing plate.
Preferably, a guide plate is obliquely arranged at the center of the bottom of the lifting slat, and the center line of the guide plate is perpendicular to the center line of the lifting slat.
Preferably, a vertical slideway is arranged beside the lifting slat, the lifting slat is in sliding fit with the vertical slideway through a sliding block, and a conveyor belt is arranged under the lifting slat.
Preferably, the lifting device further comprises a controller and a plurality of first proximity sensors which are respectively arranged at two ends of the lifting slat at intervals, a second proximity sensor is arranged at the side of the conveying belt, the main servo motor is electrically connected with a main start-stop switch, and the secondary servo motor is electrically connected with a secondary start-stop switch.
Preferably, an auxiliary device for assisting assembly of a piston connecting rod of an engine and a control method thereof comprise the following steps:
1) When the second proximity sensor detects the engine cylinder body, an electric signal is transmitted to the controller, the controller controls the conveyor belt to stop, meanwhile, the controller controls the lifting hydraulic cylinder to drive the rotary clamping device to descend, then the controller controls the output shaft of the push-pull hydraulic cylinder to retract, the main sliding support and the secondary sliding support start to move oppositely, and when the first proximity sensors at the two ends of the lifting slat respectively detect the main sliding support and the secondary sliding support, an electric signal is transmitted to the controller, and the controller controls the output shaft of the push-pull hydraulic cylinder to stop retracting;
2) The main buffer cover and the secondary buffer cover are respectively moved back to the two ends of the crankshaft, the main buffer cover and the secondary buffer cover respectively compress the main buffer spring and the secondary buffer spring, the main start-stop switch is respectively pressed down, the main servo motor and the secondary servo motor drive the main rotating shaft and the secondary rotating shaft to rotate in the same direction, when a limit bolt on the end part of the crankshaft is clamped into a lug, the main buffer spring is rebounded to enable the main buffer cover to reset to clamp the end part of the crankshaft, and the crankshaft can rotate along with the main rotating shaft;
3) Then pressing a secondary start-stop switch, driving a secondary rotating shaft to rotate by a secondary servo motor, driving a bearing plate to rotate to drive an engine cylinder body to rotate to be horizontal, and pressing the secondary start-stop switch again to stop the secondary servo motor;
4) Then, pressing a main start-stop switch, wherein each time the main servo motor drives the main rotating shaft and the crankshaft to rotate, when two connecting rod journals of the crankshaft can be arranged in the slave piston cavity, the main servo motor stops, and the connecting rod cover and the piston connecting rod are assembled on the connecting rod journals;
5) Repeating step 4);
The invention provides an auxiliary device for assisting the assembly of a piston connecting rod of an engine and a control method thereof through improvement, and compared with the prior art, the auxiliary device has the following improvement and advantages:
the method comprises the following steps: the engine cylinder body can be automatically turned over through the rotary clamping device, so that the working difficulty is reduced, the safety coefficient is improved, the engine cylinder body can be rotated in real time, and the rotation efficiency of the engine cylinder body is improved;
and two,: can real-time rotatory bent axle through initiative rotating assembly, replace manual work to rotate, liberate the manpower, guarantee the stability after the bent axle is rotatory simultaneously, improve the assembly efficiency of piston connecting rod and connecting rod lid.
Drawings
The invention is further explained below with reference to the drawings and examples:
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a perspective view of the assembly of the lifting assembly and the rotary clamping mechanism of the present invention;
FIG. 3 is a schematic perspective view of a rotary clamping mechanism according to the present invention;
FIG. 4 is a schematic perspective view of a rotary clamping mechanism according to the present invention;
FIG. 5 is a bottom view of a rotary clamping mechanism according to a first embodiment of the present invention;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is a perspective partial structural cross-sectional view of an active rotation assembly according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view of a passive, three-dimensional, partial structure of the present invention;
FIG. 9 is a schematic perspective view of a driving rotation assembly according to a second embodiment of the present invention;
FIG. 10 is a side view of a second embodiment of an active rotation assembly;
FIG. 11 is a cross-sectional view taken along line B-B of FIG. 10;
FIG. 12 is a perspective partial structural cross-sectional view of a second embodiment of an active rotation assembly according to the present invention;
Reference numerals illustrate:
Lifting assembly 1, lifting hydraulic cylinder 11, lifting slat 12, slideway 13, rotary clamping mechanism 2, active rotating assembly 3, main sliding support 31, main rotation shaft 32, main servo motor 33, main reduction gear box 34, main clamping sleeve 35, main buffer housing 36, bump 37, main buffer spring 38, main rectangular shaft 39, passive rotating assembly 4, secondary sliding support 41, secondary rotation shaft 42, secondary clamping sleeve 43, secondary servo motor 44, secondary reduction gear box 45, secondary buffer housing 46, secondary buffer spring 47, secondary guide shaft 48, bearing plate 5, bearing block 51, guide plate 52, conveyor belt 53, vertical slideway 54, first proximity sensor 55, second proximity sensor 56, push-pull hydraulic cylinder 6, main guide shaft 7, polygonal shaft 8, limit disk 81, chute 82, gap 83, protective cylinder 9.
Detailed Description
The following detailed description of the present invention clearly and fully describes the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides an auxiliary device for assisting the assembly of a piston connecting rod of an engine and a control method thereof by improving the auxiliary device:
Embodiment one:
as shown in fig. 1-12: the auxiliary device for assisting assembly of the engine piston connecting rod comprises a rotary clamping mechanism 2 for clamping and driving a crankshaft to rotate and a lifting assembly 1 for driving the rotary clamping mechanism 2 to lift, a bearing plate 5 for bearing an engine cylinder body is arranged on the rotary clamping mechanism 2, the rotary clamping mechanism 2 comprises an active rotating assembly 3 for driving the crankshaft to rotate and a passive rotating assembly 4 for bearing one end of the crankshaft, the bearing plate 5 is arranged on the passive rotating assembly 4, the lifting assembly 1 comprises a lifting hydraulic cylinder 1a and a lifting slat 1b which are horizontally arranged and are erected right above the rotary clamping mechanism 2, an output shaft of the lifting hydraulic cylinder 1a is vertically downwards and fixedly connected with the top center of the lifting slat 1b, the bottom of the lifting slat 1b is provided with a slide way 1c along the length direction of the lifting slat 1b, the active rotating assembly 3 and the passive rotating assembly 4 are in sliding fit with the slide way 1c, a push-pull hydraulic cylinder 6 with the output direction parallel to the length direction of the lifting slat 1b is arranged beside the lifting slat 1b, the push-pull hydraulic cylinder 6 is respectively inserted into the output shaft of the active rotating assembly 3 and the passive rotating assembly 4, and the lifting slat 1b is respectively driven by the output shaft of the push-pull hydraulic cylinder 6, and the lifting assembly 4 is respectively inserted into the lifting assembly 4.
The active rotating assembly 3 comprises a main sliding bracket 31 which is in sliding fit with the slideway 1c, a main rotating shaft 32 which is in horizontal rotation fit with the main sliding bracket 31, a main clamping sleeve 35 which can be clamped with one end of a crankshaft in advance, and a main servo motor 33 which is used for driving the main rotating shaft 32 to rotate, wherein an output shaft of the main servo motor 33 is in transmission connection with the main rotating shaft 32 through a main reduction gearbox 34, the axis of the main rotating shaft 32 is parallel to the central line of the slideway 1c, the main clamping sleeve 35 is fixed at the end part of the main rotating shaft 32, a main buffer cover 36 which can slide is arranged in the main clamping sleeve 35, a bump 37 which can be in sliding fit with the inner side of the main clamping sleeve 35 is arranged at the edge of the main buffer cover 36, a gap 83 is arranged on the bump 37, a main buffer spring 38 is arranged between one end of the main rotating shaft 32 close to the main clamping sleeve 35 and the main buffer cover 36, the main buffer cover 36 is abutted against the main rectangular shaft 39 and the guide shafts to slide towards the main servo motor 33 when one end of the crankshaft is inserted into the clamping sleeve, the main buffer spring 38 is compressed, the main servo motor 33 drives the main rotary shaft 32, the main rectangular shaft 39, the guide shafts and the buffer cover to rotate around the main rotary shaft 32, when the limit bolts are clamped into the lugs 37 of the buffer cover, the main buffer spring 38 rebounds to enable the buffer cover to return a certain distance, so that the main servo motor 33 drives the main rotary shaft 32 to rotate through the main reduction gearbox 34, the main rectangular shaft 39, the guide shafts and the buffer cover rotate around the main rotary shaft 32, and the crankshaft is clamped by the buffer cover, and thus rotates with the main rotation shaft 32.
The passive rotating assembly 4 comprises a secondary sliding support 41 which is in sliding fit with the slide way 1c, a secondary rotating shaft 42 which is in horizontal rotation fit with the secondary sliding support 41, a secondary clamping sleeve 43 which can be clamped with one end of a crankshaft in advance, and a secondary servo motor 44 for driving the secondary rotating shaft 42 to rotate, an output shaft of the secondary servo motor 44 is in transmission connection with the secondary rotating shaft 42 through a secondary reduction gearbox 45, an axis of the secondary rotating shaft 42 is parallel to a central line of the slide way 1c, the secondary clamping sleeve 43 is fixed at an end part of the secondary rotating shaft 42, a secondary buffer cover 46 which can slide is arranged in the secondary clamping sleeve 43, a secondary buffer spring 47 is arranged between one end, close to the secondary clamping sleeve 43, of the secondary rotating shaft 42 and the main buffer cover 36, a secondary guide shaft 48 which penetrates through the secondary buffer cover 46 is arranged along the axis of the secondary rotating shaft, when the other end of the crankshaft is inserted into the secondary buffer cover 46, the secondary buffer cover 46 is not provided with a bump 37, the crankshaft cannot be clamped, and can rotate in the secondary buffer cover 46.
The bearing plate 5 is fixedly installed on the secondary clamping sleeve 43, the plane of the bearing plate 5 is perpendicular to the axis of the secondary rotating shaft 42, bearing blocks 51 used for clamping the engine cylinder are fixedly installed at two ends of the bearing plate 5, when one end of a crankshaft is inserted into the secondary buffer cover 46, the bearing blocks 51 and the bearing plate 5 cooperate to limit the engine cylinder, the reduction gearbox is driven to rotate through the secondary servo motor 44, so that the secondary rotating shaft 42 and the clamping sleeve are rotated, the bearing plate 5 is driven to rotate, and the engine cylinder rotates along with the reduction gearbox.
The center of the bottom of the lifting slat 1b is obliquely provided with a guide plate 52, the center line of the guide plate 52 is perpendicular to the center line of the lifting slat 1b, and workers on two sides of the engine cylinder body can convey the connecting rod cover through the guide plate 52.
The lifting lath 1b side is provided with vertical slide 54, and lifting lath 1b passes through slider and vertical slide 54 sliding fit, be provided with conveyer belt 53 under the lifting lath 1b, vertical slide 54 can guarantee that rotatory fixture 2 goes up and down steadily.
The lifting device further comprises a controller and a plurality of first proximity sensors 55 which are respectively arranged at two ends of the lifting slat 1b at intervals, a second proximity sensor 56 is arranged beside the conveying belt 53, the main servo motor 33 is electrically connected with a main start-stop switch, and the secondary servo motor 44 is electrically connected with a secondary start-stop switch.
Working principle: when the second proximity sensor 56 detects the engine cylinder, a high-level signal X1 is transmitted to the controller, the controller outputs a signal Y1 to a motor for driving the conveyor belt 53 to rotate, the motor is stopped, the controller outputs an electric signal Y2 to an electromagnetic on-off valve which is communicated with the lifting hydraulic cylinder 1a, the electromagnetic on-off valve is opened and drives the rotary clamping device to descend, then the controller outputs an electric signal Y3 to an electromagnetic on-off valve which is communicated with the push-pull hydraulic cylinder 6, the electromagnetic on-off valve is opened, an output shaft of the push-pull hydraulic cylinder 6 is retracted, the main sliding bracket 31 and the secondary sliding bracket 41 start to move oppositely, when the first proximity sensors 55 at two ends of the lifting slat 1b respectively detect the main sliding bracket 31 and the secondary sliding bracket 41, an electric signal X2 is transmitted to the controller, the controller outputs an electric signal Y4 to the electromagnetic on-off valve which is communicated with the push-pull hydraulic cylinder 6, and the output shaft of the push-pull hydraulic cylinder 6 stops retracting;
The main buffer cover 36 and the secondary buffer cover 46 are respectively moved back to the two ends of the crankshaft, the main buffer cover 36 and the secondary buffer cover 46 respectively compress the main buffer spring 38 and the secondary buffer spring 47, the main start-stop switch is respectively pressed down, the main servo motor 33 and the secondary servo motor 44 drive the main rotating shaft 32 and the secondary rotating shaft 42 to rotate in the same direction, when a limit bolt on the end part of the crankshaft is clamped into the protruding block 37, the main buffer spring 38 is rebounded to enable the main buffer cover 36 to reset so as to clamp the end part of the crankshaft, and the crankshaft can rotate along with the main rotating shaft 32;
Then the secondary start-stop switch is pressed down, the secondary servo motor 44 drives the secondary rotating shaft 42 to rotate, the bearing plate 5 is driven to rotate to drive the engine cylinder to rotate to be horizontal, and the secondary start-stop switch is pressed down again, so that the secondary servo motor 44 stops;
Then, the main start-stop switch is pressed, each time the main servo motor 33 drives the main rotating shaft 32 and the crankshaft to rotate, when two connecting rod journals of the crankshaft can be arranged in the slave piston cavity, the main servo motor 33 is stopped, and the connecting rod cover and the piston connecting rod are assembled on the connecting rod journals; repeating the steps;
When all the piston connecting rods are assembled, the secondary start-stop switch is pressed down, the secondary servo motor 44 drives the secondary rotating shaft 42 to reversely rotate, the bearing plate 5 is driven to rotate so as to drive the engine cylinder body to rotate to a vertical state, the secondary start-stop switch is pressed down again, the secondary servo motor 44 stops, the electromagnetic on-off valve corresponding to the push-pull hydraulic cylinder 6 is opened manually, the reversing valve communicated with the push-pull hydraulic cylinder 6 is pressed down, the output shaft of the push-pull hydraulic cylinder 6 stretches out, the main sliding support 31 and the secondary sliding support 41 start to move back, when the first proximity sensor 55 cannot detect the main sliding support 31 and the secondary sliding support 41, an electric signal X3 is transmitted to the controller, the controller outputs an electric signal Y5 to the electromagnetic on-off valve and the reversing valve corresponding to the push-pull hydraulic cylinder 6, the output shaft of the lifting hydraulic cylinder 1a is retracted, the rotary clamping mechanism 2 is reset, and the operation is repeated.
Embodiment two:
as shown in fig. 1-12: the auxiliary device for assisting assembly of the engine piston connecting rod comprises a rotary clamping mechanism 2 for clamping and driving a crankshaft to rotate and a lifting assembly 1 for driving the rotary clamping mechanism 2 to lift, a bearing plate 5 for bearing an engine cylinder body is arranged on the rotary clamping mechanism 2, the rotary clamping mechanism 2 comprises an active rotating assembly 3 for driving the crankshaft to rotate and a passive rotating assembly 4 for bearing one end of the crankshaft, the bearing plate 5 is arranged on the passive rotating assembly 4, the lifting assembly 1 comprises a lifting hydraulic cylinder 1a and a lifting slat 1b which are horizontally arranged and are erected right above the rotary clamping mechanism 2, an output shaft of the lifting hydraulic cylinder 1a is vertically downwards and fixedly connected with the top center of the lifting slat 1b, the bottom of the lifting slat 1b is provided with a slide way 1c along the length direction of the lifting slat 1b, the active rotating assembly 3 and the passive rotating assembly 4 are in sliding fit with the slide way 1c, a push-pull hydraulic cylinder 6 with the output direction parallel to the length direction of the lifting slat 1b is arranged beside the lifting slat 1b, the push-pull hydraulic cylinder 6 is respectively inserted into the output shaft of the active rotating assembly 3 and the passive rotating assembly 4, and the lifting slat 1b is respectively driven by the output shaft of the push-pull hydraulic cylinder 6, and the lifting assembly 4 is respectively inserted into the lifting assembly 4.
The active rotating assembly 3 comprises a main sliding support 31 which is in sliding fit with the slideway 1c, a main rotating shaft 32 which is in horizontal rotation fit with the main sliding support 31, a main clamping sleeve 35 which is clamped with one end of a crankshaft in advance, and a main servo motor 33 which is used for driving the main rotating shaft 32 to rotate, wherein an output shaft of the main servo motor 33 is in transmission connection with the main rotating shaft 32 through a main reduction box 34, the axis of the main rotating shaft 32 is parallel to the central line of the slideway 1c, the main clamping sleeve 35 is fixed on the main sliding support 31, a main buffer cover 36 which can slide is arranged in the main clamping sleeve 35, a bump 37 which can be in sliding fit with the inner side of the main clamping sleeve 35 is arranged at the edge of the main buffer cover 36, a gap 83 is arranged at the bump 37, a polygonal shaft 8 is arranged at the end part of the main rotating shaft 32, the polygonal shaft 8 is overlapped with the axis of the rotating shaft, a main buffer spring 38 is sleeved on the polygonal shaft 8, the main buffer cover 36 is in a cylindrical structure and is overlapped with the central line of the polygonal shaft 8, the main buffer cover 36 is fixed on the main rotating shaft 1c, the main buffer cover 36 is arranged on the polygonal shaft 8, the main buffer cover is arranged at one end of the polygonal shaft 8, and is in the polygonal shaft 8, the polygonal shaft is arranged at one end of the polygonal shaft 33, and is in the polygonal shaft 8, and is in the polygonal shaft 32, and is in the sliding fit with the main buffer sleeve 33, and is compressed with the main buffer sleeve 37, and the polygonal shaft is arranged at the end of the main buffer shaft when the main rotating shaft 32, and the main buffer sleeve. The main buffer spring 38 rebounds to enable the buffer cover to return a certain distance, so that the main servo motor 33 drives the main rotating shaft 32 to rotate through the main reduction gearbox 34, the polygonal shaft 8 and the buffer cover rotate around the main rotating shaft 32, and the crankshaft is clamped by the buffer cover and can rotate along with the main rotating shaft 32.
The bearing plate 5 is fixedly installed on the secondary clamping sleeve 43, the plane of the bearing plate 5 is perpendicular to the axis of the secondary rotating shaft 42, bearing blocks 51 used for clamping the engine cylinder are fixedly installed at two ends of the bearing plate 5, when one end of a crankshaft is inserted into the secondary buffer cover 46, the bearing blocks 51 and the bearing plate 5 cooperate to limit the engine cylinder, the reduction gearbox is driven to rotate through the secondary servo motor 44, so that the secondary rotating shaft 42 and the clamping sleeve are rotated, the bearing plate 5 is driven to rotate, and the engine cylinder rotates along with the reduction gearbox.
The center of the bottom of the lifting slat 1b is obliquely provided with a guide plate 52, the center line of the guide plate 52 is perpendicular to the center line of the lifting slat 1b, and workers on two sides of the engine cylinder body can convey the connecting rod cover through the guide plate 52.
The lifting lath 1b side is provided with vertical slide 54, and lifting lath 1b passes through slider and vertical slide 54 sliding fit, be provided with conveyer belt 53 under the lifting lath 1b, vertical slide 54 can guarantee that rotatory fixture 2 goes up and down steadily.
The lifting device further comprises a controller and a plurality of first proximity sensors 55 which are respectively arranged at two ends of the lifting slat 1b at intervals, a second proximity sensor 56 is arranged beside the conveying belt 53, the main servo motor 33 is electrically connected with a main start-stop switch, and the secondary servo motor 44 is electrically connected with a secondary start-stop switch.
Working principle: when the second proximity sensor 56 detects the engine cylinder, a high-level signal X1 is transmitted to the controller, the controller outputs a signal Y1 to a motor for driving the conveyor belt 53 to rotate, the motor is stopped, the controller outputs an electric signal Y2 to an electromagnetic on-off valve which is communicated with the lifting hydraulic cylinder 1a, the electromagnetic on-off valve is opened and drives the rotary clamping device to descend, then the controller outputs an electric signal Y3 to an electromagnetic on-off valve which is communicated with the push-pull hydraulic cylinder 6, the electromagnetic on-off valve is opened, an output shaft of the push-pull hydraulic cylinder 6 is retracted, the main sliding bracket 31 and the secondary sliding bracket 41 start to move oppositely, when the first proximity sensors 55 at two ends of the lifting slat 1b respectively detect the main sliding bracket 31 and the secondary sliding bracket 41, an electric signal X2 is transmitted to the controller, the controller outputs an electric signal Y4 to the electromagnetic on-off valve which is communicated with the push-pull hydraulic cylinder 6, and the output shaft of the push-pull hydraulic cylinder 6 stops retracting;
The main buffer cover 36 and the secondary buffer cover 46 are respectively moved back to the two ends of the crankshaft, the main buffer cover 36 and the secondary buffer cover 46 respectively compress the main buffer spring 38 and the secondary buffer spring 47, the main start-stop switch is respectively pressed down, the main servo motor 33 and the secondary servo motor 44 drive the main rotating shaft 32 and the secondary rotating shaft 42 to rotate in the same direction, when a limit bolt on the end part of the crankshaft is clamped into the protruding block 37, the main buffer spring 38 is rebounded to enable the main buffer cover 36 to reset so as to clamp the end part of the crankshaft, and the crankshaft can rotate along with the main rotating shaft 32;
Then the secondary start-stop switch is pressed down, the secondary servo motor 44 drives the secondary rotating shaft 42 to rotate, the bearing plate 5 is driven to rotate to drive the engine cylinder to rotate to be horizontal, and the secondary start-stop switch is pressed down again, so that the secondary servo motor 44 stops;
Then, the main start-stop switch is pressed, each time the main servo motor 33 drives the main rotating shaft 32 and the crankshaft to rotate, when two connecting rod journals of the crankshaft can be arranged in the slave piston cavity, the main servo motor 33 is stopped, and the connecting rod cover and the piston connecting rod are assembled on the connecting rod journals; repeating the steps;
When all the piston connecting rods are assembled, the secondary start-stop switch is pressed down, the secondary servo motor 44 drives the secondary rotating shaft 42 to reversely rotate, the bearing plate 5 is driven to rotate so as to drive the engine cylinder body to rotate to a vertical state, the secondary start-stop switch is pressed down again, the secondary servo motor 44 stops, the electromagnetic on-off valve corresponding to the push-pull hydraulic cylinder 6 is opened manually, the reversing valve communicated with the push-pull hydraulic cylinder 6 is pressed down, the output shaft of the push-pull hydraulic cylinder 6 stretches out, the main sliding support 31 and the secondary sliding support 41 start to move back, when the first proximity sensor 55 cannot detect the main sliding support 31 and the secondary sliding support 41, an electric signal X3 is transmitted to the controller, the controller outputs an electric signal Y5 to the electromagnetic on-off valve and the reversing valve corresponding to the push-pull hydraulic cylinder 6, the output shaft of the lifting hydraulic cylinder 1a is retracted, the rotary clamping mechanism 2 is reset, and the operation is repeated.
Embodiment III:
An auxiliary device for assisting assembly of a piston connecting rod of an engine and a control method thereof, comprising the following steps:
1) When the second proximity sensor 56 detects the engine cylinder, an electric signal is transmitted to the controller, the controller controls the conveyor belt 53 to stop, the controller controls the lifting hydraulic cylinder 1a to drive the rotary clamping device to descend, then the controller controls the output shaft of the push-pull hydraulic cylinder 6 to retract, the main sliding support 31 and the secondary sliding support 41 start to move oppositely, when the first proximity sensors 55 at the two ends of the lifting slat 1b respectively detect the main sliding support 31 and the secondary sliding support 41, an electric signal is transmitted to the controller, the controller controls the output shaft of the push-pull hydraulic cylinder 6 to stop retracting, when the second proximity sensor 56 detects the engine cylinder, a high-level signal X1 is transmitted to the controller, the controller outputs a signal Y1 to a motor for driving the conveyor belt 53 to rotate, the motor stops, and simultaneously the controller outputs an electric signal Y2 to the electromagnetic on-off valve communicated with the lifting hydraulic cylinder 1a, the electromagnetic on-off valve is opened to drive the rotary clamping device to descend, then the controller outputs an electric signal Y3 to the electromagnetic on-off valve communicated with the push-pull hydraulic cylinder 6, the output shaft of the push-pull hydraulic cylinder 6 is opened, the main sliding support 31 and the secondary sliding support 41 start to retract, and when the first proximity sensor 55 at the two ends of the lifting slat 1b respectively detect the electric signal Y3 and the electromagnetic on-off valve communicated with the push-pull hydraulic cylinder 6 to the electromagnetic on-off valve to close the electromagnetic on-off valve;
2) The main buffer cover 36 and the secondary buffer cover 46 are respectively moved back to the two ends of the crankshaft, the main buffer cover 36 and the secondary buffer cover 46 respectively compress the main buffer spring 38 and the secondary buffer spring 47, the main start-stop switch is respectively pressed down, the main servo motor 33 and the secondary servo motor 44 drive the main rotating shaft 32 and the secondary rotating shaft 42 to rotate in the same direction, when a limit bolt on the end part of the crankshaft is clamped into the protruding block 37, the main buffer spring 38 is rebounded to enable the main buffer cover 36 to reset so as to clamp the end part of the crankshaft, and the crankshaft can rotate along with the main rotating shaft 32;
3) Then the secondary start-stop switch is pressed down, the secondary servo motor 44 drives the secondary rotating shaft 42 to rotate, the bearing plate 5 is driven to rotate to drive the engine cylinder to rotate to be horizontal, and the secondary start-stop switch is pressed down again, so that the secondary servo motor 44 stops;
4) Then, the main start-stop switch is pressed, each time the main servo motor 33 drives the main rotating shaft 32 and the crankshaft to rotate, when two connecting rod journals of the crankshaft can be arranged in the slave piston cavity, the main servo motor 33 is stopped, and the connecting rod cover and the piston connecting rod are assembled on the connecting rod journals;
5) Repeating the step 4;
6) And (2) reversely operating step (2) and step (1), after all piston connecting rods are assembled, pressing a secondary start-stop switch, driving a secondary rotating shaft (42) to reversely rotate by a secondary servo motor (44), driving a bearing plate (5) to rotate to drive an engine cylinder body to be in a vertical state, pressing the secondary start-stop switch again to stop the secondary servo motor (44), manually opening an electromagnetic on-off valve corresponding to the push-pull hydraulic cylinder (6), pressing a reversing valve communicated with the push-pull hydraulic cylinder (6), enabling an output shaft of the push-pull hydraulic cylinder (6) to extend, enabling a main sliding bracket (31) and a secondary sliding bracket (41) to start to move reversely, and when the main sliding bracket (31) and the secondary sliding bracket (41) cannot be detected by a first proximity sensor (55), transmitting an electric signal (X3) to a controller, outputting an electric signal (Y5) to the electromagnetic on-off valve and the reversing valve corresponding to the push-pull hydraulic cylinder (6), retracting an output shaft of the lifting hydraulic cylinder (1 a), resetting the rotary clamping mechanism (2), and repeating the operation.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. An auxiliary device for assisting in assembling a piston connecting rod of an engine, which is characterized in that: the auxiliary device comprises a rotary clamping mechanism (2) for clamping and driving a crankshaft to rotate and a lifting assembly (1) for driving the rotary clamping mechanism (2) to lift, wherein a bearing plate (5) for bearing an engine cylinder body is arranged on the rotary clamping mechanism (2), the rotary clamping mechanism (2) comprises an active rotating assembly (3) for driving the crankshaft to rotate and a passive rotating assembly (4) for bearing one end of the crankshaft, the bearing plate (5) is arranged on the passive rotating assembly (4), the lifting assembly (1) comprises a lifting hydraulic cylinder (1 a) and a lifting slat (1 b) which are arranged horizontally and are erected right above the rotary clamping mechanism (2), an output shaft of the lifting hydraulic cylinder (1 a) is vertically downward and is fixedly connected with the top center of the lifting slat (1 b), the bottom of the lifting slat (1 b) is provided with a slide way (1 c) along the length direction of the lifting slat, the active rotating assembly (3) and the passive rotating assembly (4) are in sliding fit with the slide way (1 c), and the side of the lifting slat (1 b) is provided with a sliding hydraulic cylinder (6) and the length direction of the sliding assembly (6) which is parallel to the top of the lifting hydraulic cylinder (6) and the top of the lifting slat (1 b);
The driving rotation assembly (3) comprises a main sliding support (31) in sliding fit with the slideway (1 c), a main rotation shaft (32) in horizontal rotation fit with the main sliding support (31), a main clamping sleeve (35) capable of being clamped with one end of a crankshaft in advance, and a main servo motor (33) for driving the main rotation shaft (32) to rotate, an output shaft of the main servo motor (33) is in transmission connection with the main rotation shaft (32) through a main reduction gearbox (34), the axis of the main rotation shaft (32) is parallel to the central line of the slideway (1 c), the main clamping sleeve (35) is fixed at the end part of the main rotation shaft (32), a main buffer cover (36) capable of sliding is arranged in the main clamping sleeve (35), a bump (37) capable of being matched with the inner side of the main clamping sleeve (35) in a sliding mode is arranged at the edge of the main buffer cover (36), a gap (83) is arranged between one end, close to the main rotation shaft (32), of the main rotation shaft (35) and the main buffer cover (36), a main spring (38) is arranged between the main rotation shaft (32) and the main buffer cover (36), and the main rotation shaft (32) is provided with a plurality of main buffer covers (39) which penetrate through the main rotation shaft (7);
The passive rotating assembly (4) comprises a secondary sliding support (41) in sliding fit with the slideway (1 c), a secondary rotating shaft (42) in horizontal rotation fit with the secondary sliding support (41), a secondary clamping sleeve (43) capable of being clamped with one end of the crankshaft in advance, and a secondary servo motor (44) for driving the secondary rotating shaft (42) to rotate, an output shaft of the secondary servo motor (44) is in transmission connection with the secondary rotating shaft (42) through a secondary reduction gearbox (45), the axis of the secondary rotating shaft (42) is parallel to the central line of the slideway (1 c), the secondary clamping sleeve (43) is fixed at the end part of the secondary rotating shaft (42), a secondary buffer cover (46) capable of sliding is arranged in the secondary clamping sleeve (43), a secondary buffer spring (47) is arranged between one end, close to the secondary clamping sleeve (43), of the secondary rotating shaft (42) and the secondary buffer cover (46), and a secondary guide shaft (48) penetrating through the secondary buffer cover (46) is arranged along the axis of the secondary rotating shaft (42);
The bottom center of the lifting slat (1 b) is obliquely provided with a material guide plate (52), and the center line of the material guide plate (52) is perpendicular to the center line of the lifting slat (1 b).
2. An auxiliary device for assisting in assembling an engine piston connecting rod according to claim 1, wherein: the bearing plate (5) is fixedly arranged on the secondary clamping sleeve (43), the plane of the bearing plate (5) is perpendicular to the axis of the secondary rotating shaft (42), and bearing blocks (51) used for clamping the engine cylinder are fixedly arranged at two ends of the bearing plate (5).
3. An auxiliary device for assisting in assembling an engine piston connecting rod according to claim 2, wherein: the lifting lath (1 b) side is provided with vertical slide (54), and lifting lath (1 b) pass through slider and vertical slide (54) sliding fit, be provided with conveyer belt (53) under lifting lath (1 b).
4. An auxiliary device for assisting in assembling an engine piston connecting rod according to claim 3, wherein: the automatic lifting device is characterized by further comprising a controller and a plurality of first proximity sensors (55) which are respectively arranged at two ends of the lifting slat (1 b) at intervals, a second proximity sensor (56) is arranged beside the conveying belt (53), the main servo motor (33) is electrically connected with a main start-stop switch, and the secondary servo motor (44) is electrically connected with a secondary start-stop switch.
5. A control method of an auxiliary device for assisting in assembling an engine piston connecting rod according to claim 4, characterized in that: the method comprises the following steps:
When the second proximity sensor (56) detects the engine cylinder body, an electric signal is transmitted to the controller, the controller controls the conveyor belt (53) to stop, meanwhile, the controller controls the lifting hydraulic cylinder (1 a) to drive the rotary clamping mechanism (2) to descend, then the controller controls the output shaft of the push-pull hydraulic cylinder (6) to retract, the main sliding support (31) and the secondary sliding support (41) start to move oppositely, and when the first proximity sensors (55) at the two ends of the lifting slat (1 b) respectively detect the main sliding support (31) and the secondary sliding support (41), an electric signal is transmitted to the controller, and the controller controls the output shaft of the push-pull hydraulic cylinder (6) to stop retracting;
The main buffer cover (36) and the secondary buffer cover (46) are respectively moved back to the two ends of the crankshaft, the main buffer cover (36) and the secondary buffer cover (46) respectively compress the main buffer spring (38) and the secondary buffer spring (47), the main start-stop switch is respectively pressed down, the main servo motor (33) and the secondary servo motor (44) drive the main rotating shaft (32) and the secondary rotating shaft (42) to rotate in the same direction, when a limit bolt on the end part of the crankshaft is clamped into a lug (37), the main buffer spring (38) is rebounded, so that the end part of the crankshaft is clamped by the main buffer cover (36) in a reset mode, and the crankshaft can rotate along with the main rotating shaft (32);
Then the secondary start-stop switch is pressed down, the secondary servo motor (44) drives the secondary rotating shaft (42) to rotate, the bearing plate (5) is driven to rotate to drive the engine cylinder to rotate, the engine cylinder rotates to be close to the horizontal, and the secondary start-stop switch is pressed down again, so that the secondary servo motor (44) is stopped;
Then the main start-stop switch is pressed, each time the main servo motor (33) drives the main rotating shaft (32) and the crankshaft to rotate, when two connecting rod journals of the crankshaft can be seen from the piston cavity, the main servo motor (33) is stopped by pressing the main start-stop switch, and the connecting rod cover and the piston connecting rod are assembled on the connecting rod journals;
5) Repeating step 4).
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| CN201910657891.0A CN110509050B (en) | 2019-07-20 | 2019-07-20 | Auxiliary device for assisting assembly of engine piston connecting rod and control method thereof |
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| CN201910657891.0A CN110509050B (en) | 2019-07-20 | 2019-07-20 | Auxiliary device for assisting assembly of engine piston connecting rod and control method thereof |
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| CN211102632U (en) * | 2019-07-20 | 2020-07-28 | 玉柴联合动力股份有限公司 | Auxiliary device for assisting assembly of engine piston connecting rod |
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| CN202336701U (en) * | 2011-12-03 | 2012-07-18 | 锐展(铜陵)科技有限公司 | Manual assembly auxiliary mechanism for engine |
| CN106826741B (en) * | 2017-03-16 | 2019-02-19 | 安徽江淮汽车集团股份有限公司 | A kind of engine assembly device |
| CN106976050A (en) * | 2017-06-02 | 2017-07-25 | 广西玉柴机器股份有限公司 | The pallet apparatus of engine mounting assembling |
| CN109941710B (en) * | 2019-04-19 | 2024-04-30 | 玉柴联合动力股份有限公司 | Rotary clamping device for detecting bayonet of engine cylinder body and operation method |
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| CN211102632U (en) * | 2019-07-20 | 2020-07-28 | 玉柴联合动力股份有限公司 | Auxiliary device for assisting assembly of engine piston connecting rod |
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