CN204843443U - Crank connecting rod assembly assembly quality - Google Patents
Crank connecting rod assembly assembly quality Download PDFInfo
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- CN204843443U CN204843443U CN201520634685.5U CN201520634685U CN204843443U CN 204843443 U CN204843443 U CN 204843443U CN 201520634685 U CN201520634685 U CN 201520634685U CN 204843443 U CN204843443 U CN 204843443U
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- crank
- pin
- alignment pin
- pilot hole
- hole
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Abstract
The utility model discloses a crank connecting rod assembly assembly quality, assembly quality includes hydraulic press, pressure head to and fixed mounting is used for fixing a position on the left articulate mould and is used for fixing a position right articulate lower mould on the hydraulic press, install loading sensor and connection on the pressure head and install linear displacement sensor, it corresponds to go up mould and lower mould the position of articulate pinhole is provided with the locating lever that can follow endwise slip along the axial, the one end of keeping away from the pinhole of locating lever is provided with a position sensor, and position sensor equals the length of locating lever apart from the distance of the terminal surface of the design and installation position of crank pin when the compound die state. The utility model has the advantages of simple structure is favorable to improving work efficiency, and the pressure equipment loading of crank pin both sides is favorable to improving the ex factory pass rate in the time of can detecting the assembly.
Description
Technical field
The utility model relates to engine crank assembling field, relates to a kind of crank connecting link general assembly device especially.
Background technology
Crank connecting link assembly is the vitals on two-wheel car engine, and its function is the rotary motion linear reciprocating motion of piston being changed into crank, and outside output torque.It is assembled by combinations such as left crank, right crank, crank-pin, connecting rod and the connecting-rods bearing, and wherein left and right crank is coupled together by interference fit by crank-pin, and the properties influence of its product is to engine performance.Not enough once the interference fit magnitude of interference between crank-pin and crank, the press-fiting loading and will reduce of crank-pin and crank press-fit, like this, will engine life be affected, cause abnormal sound, engine knock occurs, the phenomenons such as crank gets loose, the fatal potential safety hazard of suddenly stopping when there is high engine speeds running.
Current crank connecting link assembly mainly adopts hydraulic press to press-fit, and when press-fiting, the load sensor that hydraulic press pressure head place installs carries out real-time collecting to press-fiting loading.Meanwhile, the linear displacement transducer be connected with pressure head carries out real-time collecting to the stroke of pressure head.When linear displacement transducer be recorded to pressure head distance be press-fit into place 1 ~ 3mm time, the loading value of PLC record load sensor now, judges press-fiting loading and whether meeting the requirements of crank connecting link assembly with this.But, this kind of monitor mode only can determine the crank be finally in place in left and right crank when press-fiting whether qualified press-fit loading, and cannot to detect the loading that press-fits of the crank that is first in place.
Utility model content
For above-mentioned the deficiencies in the prior art, technical problem to be solved in the utility model is: how to provide a kind of structure simple, can detect to press-fit load when crank-pin two ends are in place, and improves the crank connecting link general assembly device of ex factory pass rate.
In order to solve the problems of the technologies described above, the utility model have employed following technical scheme:
A kind of crank connecting link general assembly device, comprises hydraulic press, described hydraulic press is provided with pressure head, described pressure head is provided with load sensor; The side of described hydraulic press is vertically provided with a linear displacement transducer, and slide section and the described pressure head of described linear displacement transducer rigidly fix and to be connected and can be upper and lower with pressure head; Described load sensor and linear displacement transducer are electrically connected to a PLC control system; Described PLC control system is provided with alarm device; Patrix is installed with below described pressure head, the lower surface of described patrix is vertically provided with one for installing the first locating hole of crank axle and one for installing the first pilot hole of the first alignment pin, the distance between the axis of described first pilot hole and the axis of the first locating hole equals the distance between the axis of the crank axle of crank to be installed and the axis of crank-pin; The upper end of described first alignment pin by spring fitting in the first pilot hole, lower end stretches out patrix lower surface and the pin-and-hole diameter of the circumscribed circle diameter in cross section and crank to be installed matches, and described first alignment pin can slide in the pin-and-hole of crank to be installed along the axial direction of described first pilot hole; The workbench of described hydraulic press being provided with the counterdie corresponding with described patrix, the upper surface of described counterdie being vertically provided with coaxial for installing the second locating hole of crank axle and second pilot hole for install second alignment pin coaxial with described first pilot hole with described first locating hole; The lower end of described second alignment pin by spring fitting in the second pilot hole, upper end stretches out counterdie upper surface and the pin-and-hole diameter of the circumscribed circle diameter in cross section and crank to be installed matches, and described second alignment pin can slide in the pin-and-hole of crank to be installed along the axial direction of described second pilot hole; It is characterized in that, the upper end of described first pilot hole is provided with a primary importance sensor, and the distance of described primary importance sensor and patrix lower surface equals the maximum distance of reaction of described primary importance sensor and the length sum of the first alignment pin; The lower end of described second pilot hole is provided with a second place sensor, and the distance of described second place sensor and counterdie upper surface equals the maximum distance of reaction of described second place sensor and the length sum of the second alignment pin; Described primary importance sensor and second place sensor electrical are connected to described PLC control system.
During work, the crank axle of left crank is arranged in the first locating hole of patrix, and make the lower end of the first alignment pin insert in the pin-and-hole of left crank, because the circumscribed circle diameter in the cross section of the lower end of the first alignment pin and pin-and-hole match, after namely the first alignment pin inserts pin-and-hole, pin-and-hole cannot be moved along the direction of vertical axis, like this, just complete the location of left crank.Same step is adopted to be positioned on counterdie by right crank.Then adopt fixture crank-pin to be located the relevant position of the pin-and-hole of crank to be installed, and make crank-pin coaxial with the pin-and-hole of crank to be installed.Start hydraulic press, pressure head is pressed down.Now, the upper end of crank-pin is upwards pushed up the first alignment pin and the first alignment pin is moved upward vertically, simultaneously the lower end of crank-pin is pushed up the second backstay downwards the second backstay is moved downward vertically, when the first alignment pin moves touch primary importance sensor or the second backstay move down touch the second place sensor time, PLC control system all records the loading data of now load sensor, and compared with between setting district, if not in setting district, alarm device starts reports to the police.Like this, just can know that whether the loading of crank-pin both sides is qualified, avoid defective work to flow out, improve crank connecting link assembly ex factory pass rate.When ram movement is to die-closed position, linear displacement transducer sends signal according to the stroke of pressure head, and controls the pressure head backhaul of hydraulic press by PLC control system.Like this, can prevent that ram travel is excessive causes the assembling of crank connecting link assembly overproof, be conducive to improving assembly qualified rate.
As optimization, the both sides of described upper die and lower die are provided with block all relatively, and every side block block is bonded to each other when matched moulds state, and the block gross thickness after laminating equals the crank-pin length of crank to be installed.
Like this, once linear displacement transducer breaks down, owing to there being the position-limiting action of block, pressure head also can not damage crank connecting link assembly by pressure, is conducive to further improving assembly qualified rate.
As optimization, described first alignment pin entirety is in inverted T shape, and be made up of the first location division and top first installation portion of entirety in strip being positioned at lower end, the radial dimension of described first location division and the size of described first pilot hole match; Be set with a spring outside described first installation portion, one end of this spring is fixedly connected with described first location division, and the other end is fixedly mounted on patrix; Described second alignment pin entirety is T-shaped, and be made up of the second location division and bottom second installation portion of entirety in strip being positioned at upper end, the radial dimension of described second location division and the size of described second pilot hole match; Be set with a spring outside described second installation portion, one end of this spring is fixedly connected with described second location division, and the other end is fixedly mounted on counterdie.
Like this, after assembling terminates, during pressure head backhaul, the crank connecting link assembly assembled pushes away to the direction away from upper die and lower die by the first alignment pin and the second backstay under the action of the spring, make the better demoulding of crank connecting link assembly, meanwhile, also facilitate as next left crank or right crank location, improve operating efficiency.
As optimization, the cylinder of to be end face be in the lower end of described first alignment pin positive six shapes; The cylinder of to be end face be in the upper end of described second alignment pin positive six shapes.
Like this, when the first alignment pin or the second backstay insert the pin-and-hole location of crank to be installed, the contact area of the first alignment pin or the second backstay and pin-and-hole is less, crank-pin promote the first alignment pin or the second backstay motion time easier, meanwhile, the pin-and-hole of crank to be installed is also easily inserted during location.Be conducive to increasing work efficiency.
As optimization, described alarm device comprises a buzzer and a warning light.Like this, existing sound, has light again, can more be conducive to workman and find defective work, thus detect in time, improves ex factory pass rate.
As optimization, described PLC control system is also electrically connected with a LED display.Like this, what can show both sides intuitively press-fits the concrete data of loading.
In sum, it is simple that the utility model has structure, is conducive to increasing work efficiency, when can detect assembling crank-pin both sides press-fit loading, be conducive to improving the advantages such as ex factory pass rate.
Accompanying drawing explanation
Fig. 1 is the structural scheme of mechanism of the utility model one embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
During concrete enforcement: as shown in Figure 1, a kind of crank connecting link general assembly device, comprises on hydraulic press 1 described in hydraulic press 1 and is provided with pressure head 2, and described pressure head 2 is provided with load sensor 3, the side of described hydraulic press 1 is vertically provided with a linear displacement transducer 4, and slide section 41 and the described pressure head 2 of described linear displacement transducer 4 rigidly fix and to be connected and can with pressure head about 2, described load sensor 3 and linear displacement transducer 4 are electrically connected to a PLC control system 5, described PLC control system 5 is provided with alarm device 6, patrix 7 is installed with below described pressure head 2, the lower surface of described patrix 7 is vertically provided with one for installing the first locating hole 71 of crank axle and one for installing the first pilot hole 72 of the first alignment pin 8, the distance between the axis of described first pilot hole 72 and the axis of the first locating hole 71 equals the distance between the axis of the crank axle of crank 9 to be installed and the axis of crank-pin 10, the upper end of described first alignment pin 8 by spring fitting in the first pilot hole 72, lower end stretches out patrix 7 lower surface and the pin-and-hole diameter of the circumscribed circle diameter in cross section and crank to be installed 9 matches, and described first alignment pin 8 can slide in the pin-and-hole of crank to be installed along the axial direction of described first pilot hole 72, the workbench of described hydraulic press 1 is provided with the counterdie 11 corresponding with described patrix 7, described counterdie 11 is provided with coaxial for installing the second locating hole 111 of crank axle and second pilot hole 112 for install second alignment pin 12 coaxial with described first pilot hole 72 with described first locating hole 71, the lower end of described second alignment pin 12 by spring fitting in the second pilot hole 112, upper end stretches out counterdie 11 upper surface and the pin-and-hole diameter of the circumscribed circle diameter in cross section and crank to be installed matches, described second alignment pin 12 can slide in the pin-and-hole of crank to be installed along the axial direction of described second pilot hole 112, wherein, the upper end of described first pilot hole 72 is provided with a primary importance sensor 13, and described primary importance sensor 13 equals the maximum distance of reaction of described primary importance sensor 13 and the length sum of the first alignment pin 8 with the distance of patrix 7 lower surface, the lower end of described second pilot hole 112 is provided with a second place sensor 14, and described second place sensor 14 equals the maximum distance of reaction of described second place sensor 14 and the length sum of the second alignment pin 12 with the distance of counterdie 11 upper surface, described primary importance sensor 13 second place sensor 14 is electrically connected to described PLC control system 5.
During work, the crank axle of left crank is arranged in the first locating hole of patrix, and make the lower end of the first alignment pin insert in the pin-and-hole of left crank, because the circumscribed circle diameter in the cross section of the lower end of the first alignment pin and pin-and-hole match, after namely the first alignment pin inserts pin-and-hole, pin-and-hole cannot be moved along the direction of vertical axis, like this, just complete the location of left crank.Same step is adopted to be positioned on counterdie by right crank.Then adopt fixture crank-pin to be located the relevant position of the pin-and-hole of crank to be installed, and make crank-pin coaxial with the pin-and-hole of crank to be installed.Start hydraulic press, pressure head is pressed down.Now, the upper end of crank-pin is upwards pushed up the first alignment pin and the first alignment pin is moved upward vertically, simultaneously the lower end of crank-pin is pushed up the second backstay downwards the second backstay is moved downward vertically, when the first alignment pin moves touch primary importance sensor or the second backstay move down touch the second place sensor time, PLC control system all records the loading data of now load sensor, and compared with between setting district, if not in setting district, alarm device starts reports to the police.Like this, just can know that whether the loading of crank-pin both sides is qualified, avoid defective work to flow out, improve crank connecting link assembly ex factory pass rate.When ram movement is to die-closed position, linear displacement transducer sends signal according to the stroke of pressure head, and controls the pressure head backhaul of hydraulic press by PLC control system.Like this, can prevent that ram travel is excessive causes the assembling of crank connecting link assembly overproof, be conducive to improving assembly qualified rate.
Wherein, described patrix 7 is all relative with the both sides of counterdie 11 is provided with block 15, and every side block block 15 is bonded to each other when matched moulds state, and block 15 gross thickness after laminating equals crank-pin 10 length of crank to be installed.
Like this, once linear displacement transducer breaks down, owing to there being the position-limiting action of block, pressure head also can not damage crank connecting link assembly by pressure, is conducive to further improving assembly qualified rate.
Wherein, described first alignment pin 8 entirety is in inverted T shape, and be made up of the first location division 82 and top first installation portion 81 of entirety in strip being positioned at lower end, the radial dimension of described first location division 82 and the size of described first pilot hole 72 match; Be set with a spring outside described first installation portion 81, one end of this spring is fixedly connected with described first location division 81, and the other end is fixedly mounted on patrix 7; Described second alignment pin 12 is overall T-shaped, and be made up of the second location division 122 and bottom second installation portion 121 of entirety in strip being positioned at upper end, the radial dimension of described second location division 122 and the size of described second pilot hole 112 match; Be set with a spring outside described second installation portion 121, one end of this spring is fixedly connected with described second location division 122, and the other end is fixedly mounted on counterdie 11.
Like this, after assembling terminates, during pressure head backhaul, the crank connecting link assembly assembled pushes away to the direction away from upper die and lower die by the first alignment pin and the second backstay under the action of the spring, make the better demoulding of crank connecting link assembly, meanwhile, also facilitate as next left crank or right crank location, improve operating efficiency.
Wherein, the cylinder of to be end face be in the lower end of described first alignment pin 8 positive six shapes; The cylinder of to be end face be in the upper end of described second alignment pin 12 positive six shapes.
Like this, when the first alignment pin or the second backstay insert the pin-and-hole location of crank to be installed, the contact area of the first alignment pin or the second backstay and pin-and-hole is less, crank-pin promote the first alignment pin or the second backstay motion time easier, meanwhile, the pin-and-hole of crank to be installed is also easily inserted during location.Be conducive to increasing work efficiency.
Wherein, described alarm device 6 comprises a buzzer 61 and a warning light 62.Like this, existing sound, has light again, can more be conducive to workman and find defective work, thus detect in time, improves ex factory pass rate.
Wherein, described PLC control system 5 is also electrically connected with a LED display 16.Like this, what can show both sides intuitively press-fits the concrete data of loading.
The foregoing is only preferred embodiment of the present utility model; it is not restriction with the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a crank connecting link general assembly device, comprises hydraulic press, and described hydraulic press is provided with pressure head, and described pressure head is provided with load sensor; The side of described hydraulic press is vertically provided with a linear displacement transducer, and slide section and the described pressure head of described linear displacement transducer rigidly fix and to be connected and can be upper and lower with pressure head; Described load sensor and linear displacement transducer are electrically connected to a PLC control system; Described PLC control system is provided with alarm device; Patrix is installed with below described pressure head, the lower surface of described patrix is vertically provided with one for installing the first locating hole of crank axle and one for installing the first pilot hole of the first alignment pin, the distance between the axis of described first pilot hole and the axis of the first locating hole equals the distance between the axis of the crank axle of crank to be installed and the axis of crank-pin; The upper end of described first alignment pin by spring fitting in the first pilot hole, lower end stretches out patrix lower surface and the pin-and-hole diameter of the circumscribed circle diameter in cross section and crank to be installed matches, and described first alignment pin can slide in the pin-and-hole of crank to be installed along the axial direction of described first pilot hole; The workbench of described hydraulic press being provided with the counterdie corresponding with described patrix, the upper surface of described counterdie being vertically provided with coaxial for installing the second locating hole of crank axle and second pilot hole for install second alignment pin coaxial with described first pilot hole with described first locating hole; The lower end of described second alignment pin by spring fitting in the second pilot hole, upper end stretches out counterdie upper surface and the pin-and-hole diameter of the circumscribed circle diameter in cross section and crank to be installed matches, and described second alignment pin can slide in the pin-and-hole of crank to be installed along the axial direction of described second pilot hole; It is characterized in that, the upper end of described first pilot hole is provided with a primary importance sensor, and the distance of described primary importance sensor and patrix lower surface equals the maximum distance of reaction of described primary importance sensor and the length sum of the first alignment pin; The lower end of described second pilot hole is provided with a second place sensor, and the distance of described second place sensor and counterdie upper surface equals the maximum distance of reaction of described second place sensor and the length sum of the second alignment pin; Described primary importance sensor and second place sensor electrical are connected to described PLC control system.
2. crank connecting link general assembly device as claimed in claim 1, it is characterized in that, the both sides of described upper die and lower die are provided with block all relatively, and every side block block is bonded to each other when matched moulds state, and the block gross thickness after laminating equals the crank-pin length of crank to be installed.
3. crank connecting link general assembly device as claimed in claim 1, it is characterized in that, described first alignment pin entirety is in inverted T shape, be made up of the first location division and top first installation portion of entirety in strip that are positioned at lower end, the radial dimension of described first location division and the size of described first pilot hole match; Be set with a spring outside described first installation portion, one end of this spring is fixedly connected with described first location division, and the other end is fixedly mounted on patrix; Described second alignment pin entirety is T-shaped, and be made up of the second location division and bottom second installation portion of entirety in strip being positioned at upper end, the radial dimension of described second location division and the size of described second pilot hole match; Be set with a spring outside described second installation portion, one end of this spring is fixedly connected with described second location division, and the other end is fixedly mounted on counterdie.
4. crank connecting link general assembly device as claimed in claim 1, is characterized in that, the cylinder of to be end face be in the lower end of described first alignment pin positive six shapes; The cylinder of to be end face be in the upper end of described second alignment pin positive six shapes.
5. crank connecting link general assembly device as claimed in claim 1, it is characterized in that, described alarm device comprises a buzzer and a warning light.
6. crank connecting link general assembly device as claimed in claim 1, it is characterized in that, described PLC control system is also electrically connected with a LED display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520634685.5U CN204843443U (en) | 2015-08-21 | 2015-08-21 | Crank connecting rod assembly assembly quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520634685.5U CN204843443U (en) | 2015-08-21 | 2015-08-21 | Crank connecting rod assembly assembly quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204843443U true CN204843443U (en) | 2015-12-09 |
Family
ID=54734040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520634685.5U Active CN204843443U (en) | 2015-08-21 | 2015-08-21 | Crank connecting rod assembly assembly quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204843443U (en) |
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2015
- 2015-08-21 CN CN201520634685.5U patent/CN204843443U/en active Active
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |