CN220218096U - Floating support device for crankshaft detection - Google Patents
Floating support device for crankshaft detection Download PDFInfo
- Publication number
- CN220218096U CN220218096U CN202321321980.6U CN202321321980U CN220218096U CN 220218096 U CN220218096 U CN 220218096U CN 202321321980 U CN202321321980 U CN 202321321980U CN 220218096 U CN220218096 U CN 220218096U
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- CN
- China
- Prior art keywords
- base
- ram
- crankshaft
- support device
- floating
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 239000002699 waste material Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a floating support device for crankshaft detection, which solves the problems of time and labor waste, poor precision and poor reliability in the existing crankshaft detection. The technical scheme includes that the floating type steel ball bearing device comprises a base, a support panel arranged on the base and a bracket arranged on the support panel, wherein the base is a floating base and comprises an upper base and a lower base, a steel ball retainer is arranged between the upper base and the lower base, and steel balls are fully paved on the steel ball retainer; the two sides of the upper base and the lower base are provided with fixing plates, and the fixing plates are connected with the upper base and the lower base through screws. The utility model has simple structure, easy operation, convenient adjustment of the height of the crankshaft and detection error avoidance.
Description
Technical Field
The utility model relates to a testing tool, in particular to a floating support device for crankshaft detection.
Background
The crankshaft run-out value of the marine middle and high speed diesel engine is the critical weight size of crankshaft acceptance. The radial runout out-of-tolerance can seriously affect the performance of the engine, aggravate the abrasion of the journal, cause the damage of the bearing bush and finally cause the failure of parts. The current common method is to place V-shaped iron brackets at two ends, and push the crankshaft to rotate or drive the crankshaft to rotate by a crane to measure the runout of the crankshaft.
Because the marine diesel engine crankshaft is large in size and weight, the conventional method has more problems in the detection process: 1) The V-shaped brackets are arranged at the two ends only, and the crankshaft can bend due to dead weight, so that the true value of the runout of the crankshaft is affected.
2) Detecting the crankshaft and jumping, need to adjust the crankshaft both ends to the equal height, ordinary V type support needs to pass through the driving cooperation to adjust the height, wastes time and energy and the error is great.
3) The contact of the conventional V-shaped frame with the crankshaft journal results in a loss of crankshaft surface.
Disclosure of Invention
The utility model aims to solve the technical problems and provide the floating support device for crankshaft detection, which has the advantages of simple structure, easy operation, convenient adjustment of the height of the crankshaft and detection error avoidance.
The technical scheme includes that the floating type steel ball bearing device comprises a base, a support panel arranged on the base and a bracket arranged on the support panel, wherein the base is a floating base and comprises an upper base and a lower base, a steel ball retainer is arranged between the upper base and the lower base, and steel balls are fully paved on the steel ball retainer; the two sides of the upper base and the lower base are provided with fixing plates, and the fixing plates are connected with the upper base and the lower base through screws.
The bottom surface of the lower base is also provided with a positioning key.
The support panel is of an isosceles trapezoid structure with inclined planes at two sides, and the brackets are symmetrically arranged on the inclined planes at two sides.
The bracket is an adjustable bracket and comprises a ram in sliding fit with the inclined plane of the support panel, the front end of the ram is provided with a support block, and the rear end of the ram is connected with an adjusting mechanism.
The inclined plane is provided with a guide groove, the bottom surface of the ram is provided with a guide bar, and the guide bar is positioned in the guide groove.
The guide groove is a T-shaped groove, the head of the fixing bolt is positioned in the T-shaped groove, and the tail of the fixing bolt upwards penetrates through the ram to be fastened with the nut.
The adjusting mechanism comprises a screw rod supporting seat fixed on the inclined plane of the supporting panel and an adjusting screw rod penetrating through the screw rod supporting seat, and the front end of the adjusting screw rod is rotationally connected with the rear end of the ram.
The front end of the adjusting screw is rotationally connected with the rear end of the ram through a snap ring mechanism, the snap ring mechanism comprises a snap ring and a baffle ring positioned at the rear end of the snap ring, the front end of the snap ring is fixed at the rear end of the ram, and a limit screw is inserted after the front end of the adjusting screw passes through the baffle ring.
The beneficial effects are that:
when the crankshaft is supported, the bending caused by the dead weight of the crankshaft can be eliminated in the horizontal direction by utilizing the floating base, the bending caused by the dead weight of the crankshaft can be eliminated in the vertical direction by utilizing the adjusting mechanism, meanwhile, the freedom degree of the crankshaft is not limited, and powerful guarantee is provided for the accuracy of the detection data of the crankshaft. The utility model has the advantages of simple and reliable adjustment operation, time and labor saving, long service life, no influence on the surface quality of the crankshaft, and is particularly suitable for detecting the crankshaft runout value.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
Fig. 2 is a left side view of fig. 1.
Wherein, the floating base 1, the upper base 11, the lower base 12, the steel ball retainer 13, the steel balls 14, the positioning key 15, the fixing plate 16 and the screw 17;
a support panel 2, an inclined surface 21 and a T-shaped groove 23;
the adjustable bracket 3, the adjusting screw 31, the screw supporting seat 32, the ram 33, the guide strip 34, the fixing bolt 35 and the supporting block 36;
a snap ring 41, a baffle ring 42, a screw 43 and a crankshaft 5.
Detailed Description
The utility model is further explained below with reference to the drawings:
referring to fig. 1 and 2, the present utility model includes a floating base 1, a support panel 2 mounted on the base, and an adjustable bracket 3 provided on the support panel 2.
The floating base 1 comprises an upper base 11 and a lower base 12, a steel ball retainer 13 is arranged between the upper base 11 and the lower base 12, steel balls 14 are fully paved on the steel ball retainer 13, and the upper base 11 can move on the steel balls 14 in a universal mode; the two sides of the upper and lower bases 11, 12 are provided with fixing plates 16, and the fixing plates 16 are respectively connected with the upper and lower bases 11, 12 through screws. The bottom surface of the lower base 12 is also provided with a positioning key 15, and the lower end of the positioning key 15 can be correspondingly inserted into a positioning groove on the detection platform, so that the floating base 1 is rapidly positioned and installed on the detection platform for crankshaft detection.
The support panel 2 is of an isosceles trapezoid structure with inclined planes 21 on two sides, T-shaped grooves 23 are formed in the inclined planes 21, and the adjustable brackets 3 are symmetrically arranged on the inclined planes 21 on two sides.
The adjustable bracket 3 comprises a ram 33 which is in sliding fit with the inclined plane 21 of the support panel 2, the front end of the ram 33 is provided with a support block 36, and the rear end is connected with an adjusting mechanism; the bottom surface of the ram 33 is provided with a guide strip 34, and the guide strip is positioned in the guide groove; the supporting block 36 is made of polytetrafluoroethylene, so that the damage to the crankshaft caused by grinding in the rotation process can be prevented.
The guide groove is a T-shaped groove, the head of the fixing bolt 35 is positioned in the T-shaped groove, and the tail of the fixing bolt upwards passes through the ram 33 to be fastened with the nut.
The adjusting mechanism comprises a screw supporting seat 32 fixed on the inclined plane of the supporting panel and an adjusting screw 31 (threaded fit of the screw supporting seat 32) penetrating through the screw supporting seat 32, wherein the front end of the adjusting screw 31 is rotationally connected with the rear end of the ram 33 through a snap ring mechanism; the snap ring mechanism comprises a snap ring 41 and a baffle ring 42 positioned at the rear end of the snap ring 41, the front end of the snap ring 41 is fixed at the rear end of the ram 33, and the front end of the adjusting screw 31 passes through the baffle ring 42 and then is inserted with a limit screw 43, so that the adjusting screw 31 can rotate at the baffle ring 42.
During testing, the floating supporting device is hoisted to a crankshaft detection platform, the lower ends of the positioning keys 15 are correspondingly inserted into positioning grooves on the detection platform, and screws 17 on fixing plates 16 on two sides of the upper base 11 and the lower base 12 are loosened;
and the crankshaft 5 is hoisted to the detection platform, at the moment, the V-shaped iron brackets are supported at the two ends of the crankshaft 5, and the floating support device is supported at the middle section of the crankshaft 5.
Under the action of gravity, the upper bottom plate 11 adaptively displaces under the action of the crankshaft, then the adjustable brackets 2 on the two sides of the support panel 2 are adjusted, namely the adjusting screw rods 31 in the screw rod supporting seats 32 are rotated to move upwards along the axial direction, the ram 33 is driven to move upwards along the T-shaped grooves until the supporting blocks 36 on the adjustable brackets 2 on the two sides are propped against the crankshaft, and then the fixing bolts 35 are screwed by nuts to expand the subsequent detection.
Claims (9)
1. The floating support device for crankshaft detection comprises a base, a support panel arranged on the base and a bracket arranged on the support panel, and is characterized in that the base is a floating base and comprises an upper base and a lower base, a steel ball retainer is arranged between the upper base and the lower base, and steel balls are fully paved on the steel ball retainer; the two sides of the upper base and the lower base are provided with fixing plates, and the fixing plates are connected with the upper base and the lower base through screws.
2. The floating support device for crank detection according to claim 1, wherein a positioning key is further provided on a bottom surface of the lower base.
3. The floating support device for crank detection according to claim 1 or 2, wherein the support panel has an isosceles trapezoid structure having inclined surfaces on both sides, and the brackets are symmetrically disposed on the inclined surfaces on both sides.
4. The floating support device for crankshaft detection as claimed in claim 3, wherein the bracket is an adjustable bracket and comprises a ram in sliding fit with an inclined plane of the support panel, wherein a support block is arranged at the front end of the ram, and an adjusting mechanism is connected at the rear end of the ram.
5. The floating support device for crankshaft detection as claimed in claim 4, wherein the inclined surface is provided with a guide groove, and the bottom surface of the ram is provided with a guide bar, and the guide bar is positioned in the guide groove.
6. The floating support device for crankshaft detection as claimed in claim 5, wherein the guide groove is a T-shaped groove, the head of the fixing bolt is positioned in the T-shaped groove, and the tail of the fixing bolt passes through the ram upwards to be fastened with the nut.
7. The floating support device for crank detection according to any one of claims 4 to 6, wherein the adjusting mechanism includes a screw support base fixed to an inclined surface of the support panel and an adjusting screw passing through the screw support base, and a front end of the adjusting screw is rotatably connected to a rear end of the ram.
8. The floating support device for crankshaft detection according to claim 7, wherein the front end of the adjusting screw is rotatably connected with the rear end of the ram through a snap ring mechanism, the snap ring mechanism comprises a snap ring and a baffle ring positioned at the rear end of the snap ring, the front end of the snap ring is fixed at the rear end of the ram, and a limit screw is inserted after the front end of the adjusting screw passes through the baffle ring.
9. The floating support device for crank detection as claimed in claim 1, wherein the support panel has an isosceles trapezoid structure having inclined surfaces on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321321980.6U CN220218096U (en) | 2023-05-29 | 2023-05-29 | Floating support device for crankshaft detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321321980.6U CN220218096U (en) | 2023-05-29 | 2023-05-29 | Floating support device for crankshaft detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220218096U true CN220218096U (en) | 2023-12-22 |
Family
ID=89174862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321321980.6U Active CN220218096U (en) | 2023-05-29 | 2023-05-29 | Floating support device for crankshaft detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220218096U (en) |
-
2023
- 2023-05-29 CN CN202321321980.6U patent/CN220218096U/en active Active
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| GR01 | Patent grant | ||
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