CN209469752U - A kind of crankshaft balance weight - Google Patents
A kind of crankshaft balance weight Download PDFInfo
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- CN209469752U CN209469752U CN201920001085.3U CN201920001085U CN209469752U CN 209469752 U CN209469752 U CN 209469752U CN 201920001085 U CN201920001085 U CN 201920001085U CN 209469752 U CN209469752 U CN 209469752U
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- balance weight
- crankshaft
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- bolt
- holes
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Abstract
The utility model discloses a kind of crankshaft balance weights, including balance weight ontology, the top of balance weight ontology is in arc-shaped, top is equipped with hole for hoist and the mounting groove to lower recess, the bottom of balance weight ontology is equipped with positioning protrusion corresponding with mounting groove, and the bottom surface of positioning protrusion is the binding face being bonded with crankshaft；The bolt mounting holes that oriented positioning protrusion extends are opened up on the slot bottom of mounting groove.The crankshaft balance weight of the utility model is easily installed and highly reliable, can satisfy the reliable and stable operation of diesel engine.
Description
Technical field
The utility model belongs to engine crankshaft technical field more particularly to a kind of crankshaft balance weight.
Background technique
Crankshaft is an important parts on engine, after loading onto connecting rod, can accept the movement (reciprocal) up and down of connecting rod
Become to recycle (rotation) movement.Its material is made of structural carbon steel or spheroidal graphite cast-iron, and there are two significant points: trunnion
And rod journal；Trunnion is installed on cylinder body, and connecting rod neck is connect with crank pin end pore, and connecting rod small end hole and steam-cylinder piston connect
It connects.
In general, crankshaft need by the balance weight (clump weight) that is arranged on its crank come balance crankshaft rod journal with
The centrifugal force and torque that crank generates make crankshaft operation steadily and reduce the load that trunnion bearing shell is born.As shown in Figure 1, existing
There is diesel engines at present crankshaft balance weight to have the disadvantage in that
(1) the installation binding face a of balance weight and crankshaft is excessive, is not easy to guarantee between balance weight and crankshaft after bolt presses
Good fit in turn results in connection bolt and bears additional stress, poor reliability.
(2) without balance weight hole for hoist, when assembly, has manually removed installation, not only arduously, and is easy to make due to operation error
It is slid at balance weight, and then the crankshaft journal that may collide with, or even generates personal safety risk.
(3) cylinder finger setting is used, needs individually to process two cylinder pin hole b, processing technology is complicated, and is not easy to pacify
Dress.
(4) for three-stage connecting rod, balance weight is not easy to big end without fixed big end tooling fixation hole
It is fixed.
(5) it without going what is reused to remove repeated hole, is not easy to guarantee the accuracy and consistency of balance weight weight.
(6) it is carried out using hexagon-headed bolt pressing force inaccuracy tight, that next bolt is generated, engine operation process
Middle to cause the loosening of bolt due to vibration etc., and then bolt occur and cut section, balance weight flies out, so occur by
In imbalance and caused by break crankshaft accident.
Utility model content
The technical issues of the utility model solves is to provide a kind of be easily installed and highly reliable crankshaft balance weight.
A kind of crankshaft balance weight that in order to solve the above technical problems, the technical scheme adopted by the utility model is:, including it is flat
Weight ontology, the top of the balance weight ontology are in arc-shaped, and the top is equipped with hole for hoist and the mounting groove to lower recess,
The bottom of the balance weight ontology is equipped with positioning protrusion corresponding with the mounting groove, the bottom surface of the positioning protrusion for institute
State the binding face of crankshaft fitting；
The bolt mounting holes that the oriented positioning protrusion extends are opened up on the slot bottom of the mounting groove.
Preferably, two mounting grooves to lower recess are equipped at intervals on the top, the bottom is equipped with and two
One-to-one two positioning protrusion of mounting groove.
Preferably, the top between two mounting grooves is equipped with the hole for hoist, and the hole for hoist is screw thread
Hole.
Preferably, the two opposing lateral sides of the balance weight ontology is equipped with big end tooling fixation hole, and the connecting rod is big
Head tooling fixation hole is threaded hole.
Preferably, the remaining side of the balance weight ontology is equipped with and removes repeated hole.
Preferably, described that repeated hole is gone to be equipped with two.
Preferably, the flexibly positioned sets of holes that the oriented slot bottom extends are opened up on the positioning protrusion, it is described flexibly positioned
Sets of holes and the bolt mounting holes are concentric, and the aperture of the flexibly positioned sets of holes is greater than the aperture of the bolt mounting holes, institute
Flexibly positioned sets of holes are stated to connect to form a stepped hole with the bolt mounting holes.
Preferably, the crankshaft balance weight is mounted on the crankshaft by bolt assembly, and the bolt assembly includes liquid
Pressure bolt and elastic locating sleeve, the elastic locating sleeve are installed in the flexibly positioned sets of holes, and the hydraulic bolt passes through institute
The inner hole for stating bolt mounting holes and the elastic locating sleeve is fixed with the crankshaft.
After above-mentioned technical proposal, the beneficial effects of the utility model are:
The utility model crankshaft balance weight is wherein equipped with mounting groove and hole for hoist, bottom at the top of the arc of balance weight ontology
Equipped with positioning protrusion corresponding with mounting groove, the bottom surface of positioning protrusion is the binding face being bonded with crankshaft；Due to binding face
Area is very small, and when processing is easily guaranteed that its flatness and the depth of parallelism with hydraulic nut seal face, so that its be made to process work
Skill is good, and product qualification rate is high, will not be generated after assembly due to the flatness of binding face and itself and hydraulic nut seal face
Hydraulic bolt tilts caused by the depth of parallelism is unqualified, and then the phenomenon that lead to bolt fracture.
Bolt mounting holes are offered on mounting groove, and the elastic locating sleeve concentric with bolt mounting holes is offered on positioning protrusion
Hole.Balance weight ontology is installed into fixation by bolt mounting holes and flexibly positioned sets of holes and by hydraulic bolt and elastic locating sleeve
Onto the corresponding position of crankshaft, install convenient and highly reliable.
Hole for hoist, for installing lifting device.It can be saved using mechanical handling installation, safe operation in this way in assembling process
Power, avoid as no hole for hoist and use manual handling installation and caused by crankshaft journal collide with and personal safety risk.
The balance weight ontology of the utility model can utilize to greatest extent under the premise of guaranteeing to realize other structures function
Available space makes balance weight generate maximum rotating inertia force, reaches optimal counterbalance effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing crankshaft balance weight；
Fig. 2 is the structural schematic diagram of balance weight ontology in the utility model crankshaft balance weight；
Fig. 3 is the partial sectional view of Fig. 2；
Fig. 4 is the enlarged diagram in Fig. 3 at A；
Fig. 5 is the mounting structure schematic diagram of crankshaft balance weight；
Fig. 6 is the cross-sectional view of Fig. 5；
In figure: a- installs binding face, b- cylinder pin hole, 1- balance weight ontology, the top 11-, 111- mounting groove, 112- lifting
Hole, 113- bolt mounting holes, 12- positioning protrusion, 121- binding face, the flexibly positioned sets of holes of 122-, 13- big end tooling are fixed
Hole, 14- remove repeated hole, 2- hydraulic bolt, 3- elastic locating sleeve, 4- hydraulic nut, 5- crankshaft.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The embodiment of utility model is described in detail.
As Fig. 2 to Fig. 4 jointly shown in, a kind of crankshaft balance weight, including be in specific convex structure balance weight ontology 1,
The top 11 of balance weight ontology 1 is in arc-shaped, and two mounting grooves 111 to lower recess, two installations are equipped at intervals on top 11
Top 11 between slot 111 is equipped with hole for hoist 112, and hole for hoist 112 is threaded hole.The bottom of balance weight ontology 1 is equipped with and two
111 one-to-one two positioning protrusion 12 of a mounting groove, the bottom surface of positioning protrusion 12 are the binding face 121 being bonded with crankshaft.
Since the area of binding face 121 is very small, when processing, is easily guaranteed that its flatness and compresses with hydraulic nut 4 (shown in Fig. 6)
The depth of parallelism in face, to keep its processing technology good, product qualification rate is high, and putting down due to binding face 121 will not be generated after assembly
Face degree and its it is unqualified with the depth of parallelism of 4 seal face of hydraulic nut caused by hydraulic bolt tilt, and then may cause spiral shell
The problem of bolt is broken.
Hole for hoist 112, for installing lifting device.It can be using mechanical handling installation, operation peace in this way in assembling process
The whole province's power, avoid as no hole for hoist 112 and use manual handling installation and caused by crankshaft journal collide with and personal safety
Risk.
In the present embodiment, the specific structure in the balance weight ontology 1 of specific convex structure is；The top of balance weight ontology 1
Face is arcwall face, and bottom surface is plane, and there are four sides between top and bottom, and side is plane；That is the section of balance weight ontology 1
It is surrounded by camber line, two vertical lines and a horizontal line.Balance weight ontology 1 in specific convex structure is guaranteeing to realize other
Under the premise of structure function, available space can be utilized to greatest extent, so that balance weight is generated maximum rotating inertia force, reached most
Good counterbalance effect.
The bolt mounting holes 113 that oriented positioning protrusion 12 extends are opened up on the slot bottom of mounting groove 111, are opened on positioning protrusion 12
Equipped with the flexibly positioned sets of holes 122 extended to slot bottom, flexibly positioned sets of holes 122 and bolt mounting holes 113 are concentric and flexibly positioned
The aperture of sets of holes 122 is greater than the aperture of bolt mounting holes 113, and flexibly positioned sets of holes 122 connect formation one with bolt mounting holes 113
Stepped hole.
As Fig. 5 and Fig. 6 jointly shown in, in the present embodiment, crankshaft balance weight further includes bolt assembly, and bolt assembly includes liquid
Pressure bolt 2 and elastic locating sleeve 3, elastic locating sleeve 3 are installed in flexibly positioned sets of holes 122, and hydraulic bolt 2 is installed across bolt
The inner hole of hole 113 and elastic locating sleeve 3 and crankshaft 5 are fixed.
Existing structure crankshaft, tightly, due to the presence tight frictional force in the process, is made next spiral shell using hexagon-headed bolt
The pressing force that bolt generates is inaccurate, may cause the loosening of bolt in diesel engine operational process due to vibration etc., in turn
There is bolt and cut section, balance weight flies out, and then be likely to occur as imbalance and caused by break crankshaft accident.The present embodiment
In, by setting bolt mounting holes 113 and flexibly positioned sets of holes 122, using hydraulic bolt 2, elastic locating sleeve 3 and hydraulic spiral shell
Mother 4 is installed, and the axial force of bolt can be accurately controlled by hydraulic tensioner, to make the fixation of balance weight ontology 1
Accurately and reliably, while using being positioned with the concentric elastic locating sleeve 3 installed of hydraulic bolt 2, processing technology can be made to simplify, easily
In installation.
For three-stage diesel engine connecting bar structure, need that first big end and crankshaft are assembled and fixed in assembling process
To together, then entirety is packed into diesel-engine body, then small end of connecting rod and piston component are fallen into cylinder by cylinder holes top, finally
Small end of connecting rod and big end are carried out with hydraulic bolt conjunction.In order to make the safety operated in whole process and can realize
Property, it needs first to carry out big end with crankshaft relatively fixed.This just needs the two opposing lateral sides (phase in balance weight ontology 1
To side) big end tooling fixation hole 13 is opened up, big end tooling fixation hole 13 is threaded hole.The big end tooling is solid
Hole 13 is determined for installing connecting rods major part tooling, realizes connecting rod during hanging cylinder for crank portion, diesel engine general assembly and diesel engine
Major part and crank position it is relatively fixed.
The remaining side (one side in remaining two sides) of balance weight ontology 1 is equipped with and removes repeated hole 14.Repeated hole 14 is gone to be equipped with
Two, and be blind hole.Go repeated hole 14 for guaranteeing the accuracy and consistency of balance weight weight.Due in balance weight production process
In, the weight of balance weight after processing is completed can not entirely accurate and consistent, however imitated to reach best crankshaft counterbalance
Fruit, it is desirable that the weight of balance weight must be accurate, and the consistency for being attached to the balance weight weight of same diesel engine will centainly be got well,
Repeated hole 14 is removed by the way that balance weight is arranged, can be very good the accuracy and consistency of realizing balance weight weight.
To sum up, the crankshaft balance weight of the utility model is easily installed and highly reliable, can satisfy the reliable steady of diesel engine
Fixed operation.Especially it is adapted to marine diesel.
The above is the preferred embodiment of the utility model, is not intended to limit the utility model, all in this reality
With made any modification within novel spirit and principle) and the improvement of same crankshaft balance weight is waited to should be included in this
In the protection scope of utility model.
Claims (8)
1. a kind of crankshaft balance weight, including balance weight ontology, the top of the balance weight ontology is in arc-shaped, which is characterized in that
The top is equipped with hole for hoist and the mounting groove to lower recess, and the bottom of the balance weight ontology is equipped with and the mounting groove phase
Corresponding positioning protrusion, the bottom surface of the positioning protrusion are the binding face being bonded with the crankshaft；
The bolt mounting holes that the oriented positioning protrusion extends are opened up on the slot bottom of the mounting groove.
2. crankshaft balance weight as described in claim 1, which is characterized in that be equipped at intervals with two on the top to lower recess
The mounting groove, the bottom are equipped with and two one-to-one two positioning protrusion of mounting groove.
3. crankshaft balance weight as claimed in claim 2, which is characterized in that set on the top between two mounting grooves
There is the hole for hoist, the hole for hoist is threaded hole.
4. crankshaft balance weight as described in claim 1, which is characterized in that the two opposing lateral sides of the balance weight ontology is equipped with
Big end tooling fixation hole, the big end tooling fixation hole are threaded hole.
5. crankshaft balance weight as claimed in claim 4, which is characterized in that the remaining side of the balance weight ontology is equipped with duplicate removal
Hole.
6. crankshaft balance weight as claimed in claim 5, which is characterized in that described that repeated hole is gone to be equipped with two.
7. crankshaft balance weight as described in claim 1, which is characterized in that open up the oriented slot bottom on the positioning protrusion and prolong
The flexibly positioned sets of holes stretched, the flexibly positioned sets of holes and the bolt mounting holes are concentric, and the hole of the flexibly positioned sets of holes
Diameter is greater than the aperture of the bolt mounting holes, and the flexibly positioned sets of holes connect to form a stepped hole with the bolt mounting holes.
8. crankshaft balance weight as claimed in claim 7, which is characterized in that the crankshaft balance weight is mounted on by bolt assembly
On the crankshaft, the bolt assembly includes hydraulic bolt and elastic locating sleeve, and the elastic locating sleeve is installed on the elasticity
It positions in sets of holes, the hydraulic bolt passes through the inner hole of the bolt mounting holes and the elastic locating sleeve and the crankshaft is consolidated
It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920001085.3U CN209469752U (en) | 2019-01-02 | 2019-01-02 | A kind of crankshaft balance weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920001085.3U CN209469752U (en) | 2019-01-02 | 2019-01-02 | A kind of crankshaft balance weight |
Publications (1)
| Publication Number | Publication Date |
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| CN209469752U true CN209469752U (en) | 2019-10-08 |
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ID=68091335
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| CN201920001085.3U Active CN209469752U (en) | 2019-01-02 | 2019-01-02 | A kind of crankshaft balance weight |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196764A (en) * | 2020-09-30 | 2021-01-08 | 蚌埠高科能源装备有限公司 | Adjustable counterweight structure for piston compressor |
-
2019
- 2019-01-02 CN CN201920001085.3U patent/CN209469752U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196764A (en) * | 2020-09-30 | 2021-01-08 | 蚌埠高科能源装备有限公司 | Adjustable counterweight structure for piston compressor |
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