CN218856844U - Hydraulic main bearing cap dismounting tool - Google Patents
Hydraulic main bearing cap dismounting tool Download PDFInfo
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- CN218856844U CN218856844U CN202222678970.XU CN202222678970U CN218856844U CN 218856844 U CN218856844 U CN 218856844U CN 202222678970 U CN202222678970 U CN 202222678970U CN 218856844 U CN218856844 U CN 218856844U
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- main bearing
- bearing cap
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- hydraulic cylinder
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Abstract
The utility model provides a fluid pressure type main bearing cap extracting tool, including pneumatic cylinder, transverse connection board, dead lever, pneumatic cylinder piston rod, connecting block, connecting bolt and external screw thread pole. The extracting tool is fixed on the main bearing cap, reciprocates through hydraulic pump drive hydraulic cylinder piston rod, and then drives the main bearing cap and reciprocates, does not demolish under the prerequisite of main bearing cap completely, accomplishes the change of main shaft tile. The utility model provides a pair of fluid pressure type main bearing cap extracting tool can accomplish main bearing cap's decline action in constrictive crankcase space to simple and convenient completion main bearing cap reinstallation, very big reduction the degree of difficulty and the work load of changing the main shaft tile.
Description
Technical Field
The utility model particularly relates to a fluid pressure type main bearing cap extracting tool.
Background
After the main shaft bushing of the crankshaft of the diesel engine is used for a long time, the abrasion exceeds an allowable value, the tension disappears, the surface of the bushing is hardened, and the bushing cracks and peels off. Therefore, after the diesel engine is operated for a certain period of time, the main bearing shell needs to be replaced with a new one. As shown in fig. 1, the space available for working near the main bearing shell is small, its own weight is large, and it is difficult to use a conventional removal tool. If the main bearing cover is completely detached, the main bearing cover is installed back after a new main shaft bushing is replaced, and the working difficulty is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a fluid pressure type main bearing cap extracting tool can accomplish main bearing cap's decline action in constrictive crankcase space to simple and convenient completion main bearing cap is installed again.
The utility model aims at realizing through the following technical scheme: a hydraulic main bearing cap dismounting tool comprises a hydraulic cylinder, a transverse connecting plate, a fixing rod, a hydraulic cylinder piston rod, a connecting block, a connecting bolt and an external thread rod.
The two transverse connecting plates transversely extend from the top of the hydraulic cylinder to two sides, and the two fixing rods are respectively arranged on the extending edges of the two transverse connecting plates.
The external screw thread pole sets up in the dead lever upper end.
The hydraulic cylinder piston rod is vertically arranged at the top of the hydraulic cylinder, and the top end of the hydraulic cylinder piston rod is provided with a connecting block.
The connecting block is U type groove form, and two summits in connecting block U type groove are provided with and main bearing cylinder go up screw hole matched with connecting bolt.
The hydraulic cylinder is provided with a connecting hole, and the hydraulic cylinder is connected with the hydraulic pump through the connecting hole by using a connecting hose.
Preferably, bolt holes are formed in the transverse connecting plate and the fixing rod, and the fixing rod is fixed to the transverse connecting plate through bolts and nuts.
Preferably, the diameter of the round rod of the upper half of the fixing rod is smaller than that of the round tube of the lower half.
Preferably, the top point of the U-shaped groove of the connecting block is provided with a threaded through hole, and the connecting bolt penetrates through the threaded through hole to be connected with a threaded hole in the main bearing cylinder.
Preferably, the hydraulic pump is a manual hydraulic pump.
Preferably, the manual hydraulic pump switching valve is provided with a return position, a neutral position, and a pressurizing position.
The utility model discloses except providing a fluid pressure type main bearing cap extracting tool, still further provide the application method of an above-mentioned instrument, specifically include following step:
step 1: and connecting external threaded rods on the upper parts of the fixed rods on the two sides of the disassembling tool with threaded holes in the tops of the main bearing bolts, and screwing the connecting bolts on the connecting blocks into the threaded holes in the main bearing cylinder.
Step 2: the hydraulic cylinder is connected with the hydraulic pump through the connecting hose, the hydraulic pump is controlled to push the piston rod of the hydraulic cylinder to move downwards, the main bearing cover descends along with the piston rod of the hydraulic cylinder, and the replacement of a new main bearing bush is completed.
And step 3: after the new main shaft bushing is replaced, the hydraulic cylinder piston rod is pushed to move upwards by controlling the hydraulic pump, so that the main bearing cover is lifted upwards along with the hydraulic cylinder piston rod until the main bearing cover is fixed.
And 4, step 4: and stopping the hydraulic pump, dismantling the external thread rods and the connecting bolts on the fixed rod and the connecting block, and taking down the dismantling tool.
Compared with the prior art, the utility model discloses possess following advantage:
the utility model provides a pair of hydraulic type main bearing cap extracting tool and application method thereof, simple structure, convenient operation, applicable in the narrow and small crankcase of operating space, under the prerequisite of not dismantling the main bearing cap completely, accomplish the decline and the repacking of main bearing cap, very big reduction the degree of difficulty and the work load of changing the main shaft tile.
Drawings
Fig. 1 is a schematic view of a position of a main bearing shell in a crankcase in the background art of the present invention;
fig. 2 is a schematic structural view of a hydraulic main bearing cap removing tool according to the present invention;
fig. 3 is a schematic cross-sectional view of the middle hydraulic main bearing cap removing tool of the present invention fixed to the main bearing cap;
fig. 4 is the embodiment of the present invention, which illustrates a schematic structural diagram of a main bearing cap disassembly performed by a manual hydraulic cylinder.
In the figure, 1 is a hydraulic cylinder; 2 is a transverse connecting plate; 3 is a fixed rod; 4 is a hydraulic cylinder piston rod; 5 is a connecting block; 6 is a connecting bolt; 7 is an external thread rod; 8 is a connecting hose; 9 is a hydraulic pump; 10 is the return position; 11 is a neutral position; 12 is the pressurized position.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures associated with the present invention are shown in the drawings, not all of them.
As shown in fig. 2, the technical scheme of the utility model provides a fluid pressure type main bearing cap extracting tool, including pneumatic cylinder 1, transverse connection board 2, dead lever 3, pneumatic cylinder piston rod 4, connecting block 5, connecting bolt 6 and external screw thread pole 7.
Wherein, two transverse connection boards 2 transversely extend to both sides from the top of hydraulic cylinder 1, and two dead levers 3 set up the edge that extends at two transverse connection boards 2 respectively.
An externally threaded rod 7 is provided on the upper end of the fixing rod 3.
The hydraulic cylinder piston rod 4 is vertically arranged at the top of the hydraulic cylinder 1, and the connecting block 5 is arranged at the top end of the hydraulic cylinder piston rod 4.
The connecting block 5 is in a U-shaped groove shape, and two vertexes of the U-shaped groove of the connecting block 5 are provided with connecting bolts 6 matched with threaded holes in the main bearing cylinder.
The hydraulic cylinder 1 is provided with a connection hole, and the hydraulic cylinder 1 is connected with the hydraulic pump 9 through the connection hole by using a connection hose 8.
In some embodiments of the present invention, the transverse connecting plate 2 and the fixing rod 3 are provided with bolt holes, and the fixing rod 3 is fixed on the transverse connecting plate 2 by bolts and nuts.
In some embodiments of the present invention, the diameter of the round rod of the upper half of the fixing rod 3 is smaller than the diameter of the round tube of the lower half.
The utility model discloses an in some embodiments, threaded through-hole has been opened on the U type groove summit of connecting block 5, and connecting bolt 6 passes threaded through-hole and is connected with the screw hole on the main bearing cylinder.
In some embodiments of the present invention, the hydraulic pump 9 is a manual hydraulic pump, the manual hydraulic pump switching valve being provided with a return position 10, a neutral position 11 and a pressurizing position 12.
As shown in fig. 3, the technical solution of the present invention provides a method for using the above tool, in addition to a hydraulic main bearing cap removing tool, specifically including the following steps:
step 1: and connecting external threaded rods 7 on the upper parts of the fixing rods 3 on the two sides of the disassembling tool with threaded holes at the tops of main bearing bolts, and screwing the connecting bolts 6 on the connecting blocks 5 into the threaded holes on the main bearing cylinder.
And 2, step: the hydraulic cylinder 1 is connected with the hydraulic pump 9 through the connecting hose 9, the hydraulic cylinder piston rod 4 is pushed to move downwards by controlling the hydraulic pump 9, the main bearing cap descends along with the hydraulic cylinder piston rod 4, and the replacement of a new main bearing bush is completed.
And step 3: after the new main shaft bushing is replaced, the hydraulic cylinder piston rod 4 is pushed to move upwards by controlling the hydraulic pump 9, so that the main bearing cap is lifted upwards along with the hydraulic cylinder piston rod until the main bearing cap is fixed.
And 4, step 4: stopping the hydraulic pump 9, removing the external thread rod 7 and the connecting bolt 6 on the fixed rod 3 and the connecting block 5, and taking down the detaching tool.
As shown in fig. 4, in some embodiments of the present invention, a manual hydraulic pump is used as a hydraulic pump for controlling the detaching tool, and in these embodiments, the detaching tool is used by:
after the dismounting tool is fixed according to the step 1, the hydraulic cylinder 1 is connected with a manual hydraulic pump through a connecting hose 9, a hydraulic pump conversion valve is rotated to a 'return' position, a hydraulic pump handle is slowly rotated to pressurize, the hydraulic cylinder piston rod 4 is pushed to move downwards, and at the moment, a main bearing cap descends along with the hydraulic cylinder piston rod 4, so that the replacement of a new main bearing bush is completed. After the new main shaft bushing is replaced, the hydraulic pump conversion valve is switched to a pressurizing position, the handle of the hydraulic pump is slowly rotated to pressurize, and the main bearing cover is lifted to a fixed position. The hydraulic pump switching valve is switched to the "neutral" position, the pressurization is stopped, the male screw rod 7 and the connecting bolt 6 on the fixed rod 3 and the connecting block 5 are removed, and the removing tool is removed.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a fluid pressure type main bearing cap extracting tool which characterized in that: the disassembling tool comprises a hydraulic cylinder (1), a transverse connecting plate (2), a fixing rod (3), a hydraulic cylinder piston rod (4), a connecting block (5), a connecting bolt (6) and an external threaded rod (7);
the two transverse connecting plates (2) transversely extend from the top of the hydraulic cylinder (1) to two sides, and the two fixing rods (3) are respectively arranged on the extending edges of the two transverse connecting plates (2);
the external thread rod (7) is arranged at the upper end of the fixed rod (3);
the hydraulic cylinder piston rod (4) is vertically arranged at the top of the hydraulic cylinder (1), and the connecting block (5) is arranged at the top end of the hydraulic cylinder piston rod (4);
the connecting block (5) is in a U-shaped groove shape, and the connecting bolts (6) matched with the threaded holes in the main bearing cylinder are arranged at two vertexes of the U-shaped groove of the connecting block (5);
the hydraulic cylinder (1) is provided with a connecting hole, and the hydraulic cylinder (1) is connected with the hydraulic pump (9) through the connecting hole by using a connecting hose (8).
2. A hydraulic main bearing cap removal tool according to claim 1, wherein: the transverse connecting plate (2) and the fixing rod (3) are provided with bolt holes, and the fixing rod (3) is fixed on the transverse connecting plate (2) through bolts and nuts.
3. A hydraulic main bearing cap removal tool according to claim 1, wherein: the diameter of the round rod at the upper half part of the fixing rod (3) is smaller than that of the round tube at the lower half part.
4. A hydraulic main bearing cap removal tool as claimed in claim 1 wherein: and a threaded through hole is formed in the top point of the U-shaped groove of the connecting block (5), and the connecting bolt (6) penetrates through the threaded through hole to be connected with a threaded hole in the main bearing cylinder.
5. A hydraulic main bearing cap removal tool according to claim 1, wherein: the hydraulic pump (9) is a manual hydraulic pump.
6. A hydraulic main bearing cap removal tool according to claim 5, wherein: the manual hydraulic pump switch valve is provided with a return position (10), a neutral position (11), and a pressurizing position (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222678970.XU CN218856844U (en) | 2022-10-12 | 2022-10-12 | Hydraulic main bearing cap dismounting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222678970.XU CN218856844U (en) | 2022-10-12 | 2022-10-12 | Hydraulic main bearing cap dismounting tool |
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| Publication Number | Publication Date |
|---|---|
| CN218856844U true CN218856844U (en) | 2023-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222678970.XU Active CN218856844U (en) | 2022-10-12 | 2022-10-12 | Hydraulic main bearing cap dismounting tool |
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| CN (1) | CN218856844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115502933A (en) * | 2022-10-12 | 2022-12-23 | 中船动力研究院有限公司 | Hydraulic main bearing cap dismounting tool and using method thereof |
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2022
- 2022-10-12 CN CN202222678970.XU patent/CN218856844U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115502933A (en) * | 2022-10-12 | 2022-12-23 | 中船动力研究院有限公司 | Hydraulic main bearing cap dismounting tool and using method thereof |
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