CN111042913A - Power output device of engineering machinery diesel engine and assembling method thereof - Google Patents
Power output device of engineering machinery diesel engine and assembling method thereof Download PDFInfo
- Publication number
- CN111042913A CN111042913A CN202010025628.2A CN202010025628A CN111042913A CN 111042913 A CN111042913 A CN 111042913A CN 202010025628 A CN202010025628 A CN 202010025628A CN 111042913 A CN111042913 A CN 111042913A
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- pto
- bearing
- chamber
- output shaft
- diesel engine
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010276 construction Methods 0.000 claims description 7
- 239000003921 oil Substances 0.000 description 27
- 239000010720 hydraulic oil Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000005065 mining Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/06—Combinations of engines with mechanical gearing
Abstract
The invention relates to a power output device of engineering machinery diesel engine and an assembling method thereof, belonging to the technical field of engine power output devices.
Description
Technical Field
The invention belongs to the technical field of power output devices of engines, and particularly relates to a power output device of a diesel engine of engineering machinery and an assembling method thereof.
Background
Besides the power output of a flywheel end, the diesel engine of the engineering machinery generally needs to carry out other power outputs, such as the walking of a whole vehicle, the action of a harvesting mechanism of a harvester, the stirring action of a mixer truck, the earth-digging work of an excavator, the lifting of a crane and a mining vehicle and the like all need a PTO to provide power, the transmission mechanism of the existing engineering machinery is complex and various, the use environment and the working condition are extremely bad, the existing power transmission mechanism can not well serve the market of the engineering machinery, and the diesel engine mainly has the following defects:
1. through engine train transmission belt as power take off, this structure is easily drawn into debris, causes the belt to skid, wearing and tearing, even fracture.
2. The steering pump is used for driving the whole vehicle to travel, so that when the load ratio is light, no problem can occur, but when the steering pump is applied to engineering machinery with heavy load, such as a mining vehicle, the situation that the steering pump fails and the whole vehicle cannot work can be caused on an engineering dump truck.
3. The existing PTO has a single structure and poor universality, and most PTOs can only be suitable for the connection of output equipment behind one type of engineering machinery.
4. The other is a unilateral supporting gear power output device, the transmission stability of the structure is poor, when a helical gear transmission structure is adopted, unilateral axial force can provide an acting force for the thrust plate, and the situations of abrasion, tile burning and the like can be generated by the acting force for a long time.
5. Existing PTOs are largely unable to prevent the hydraulic oil of a malfunctioning hydraulic pump from leaking into the engine when the PTO is acting as a steering system power take off. Once the hydraulic pump is damaged, hydraulic oil leaks into the engine, which can cause engine damage.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to solve the following problems in the prior art:
1. the problem that the damage rate of a steering pump of a steering system is high after high-load operation;
2. the flange cover is additionally provided with oil drainage holes, so that the problem that hydraulic oil of a hydraulic pump leaks to an engine to cause damage to the engine can be solved;
3. the universality is poor.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention discloses a power output device of engineering machinery diesel engine, which comprises a PTO chamber, a PTO cover, a PTO output shaft, an oil seal, an outer bushing, an inner bushing, a first bearing and a second bearing, wherein the PTO chamber and the PTO cover are in bolt fastening connection, the inner wall of the PTO chamber is connected with the first bearing and the second bearing in an interference fit manner, the inner bushing and the outer bushing are arranged between the first bearing and the second bearing, the outer side wall of the outer bushing is attached to the inner wall of the PTO chamber, the inner wall of the inner bushing is attached to the outer wall of the PTO output shaft, the PTO chamber is rotatably connected with the second bearing and the PTO output shaft through the first bearing, and two sides.
Preferably, the PTO cover is provided with a plurality of counter bores, the PTO cover is connected with external output equipment through bolts, and the PTO cover is provided with oil drain holes communicated with the external environment.
Preferably, an annular groove is formed in the PTO cover, an O-shaped ring is installed in the annular groove, and the O-shaped ring seals the PTO chamber.
Preferably, the PTO chamber is provided with two annular grooves and an oil hole groove, the annular grooves are located on two sides of the oil hole groove, and an oil filling hole is arranged in the oil hole groove.
Preferably, both ends of the PTO output shaft are respectively provided with an internal spline and an external spline, and the end part provided with the internal spline is in a T-shaped structure.
Preferably, the external spline is in gear engagement with a gear chamber of the engine, and the engine drives the PTO output shaft to rotate.
Preferably, the shaft center of the external spline is provided with internal threads, and the external spline is fixedly connected with the outside through a bolt.
An assembly method of a power output device of a diesel engine of engineering machinery comprises the following steps:
s100, fixing the PTO output shaft, and assembling a first bearing to a T-shaped structure of the PTO output shaft along the PTO output shaft;
s200, sequentially mounting an inner bushing and an outer bushing along the PTO output shaft, so that the side surfaces of the inner bushing and the outer bushing are attached to the first bearing;
s300, mounting a second bearing along the PTO output shaft so that the side surface of the second bearing is attached to the side surfaces of the inner bushing and the outer bushing;
s400, respectively installing O-shaped rings in annular grooves of the PTO chamber and the PTO cover;
s500, installing an oil seal in the PTO cover;
s600, connecting the PTO cover with the PTO chamber, and fixedly connecting the PTO cover and the PTO chamber through bolts.
Preferably, the temperature difference of the parts when the first bearing and the second bearing are installed is kept at 200 ℃, and the first bearing and the second bearing are installed in a press-fitting mode.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) the invention relates to a power output device of engineering machinery diesel engine, which comprises a PTO chamber, a PTO cover, a PTO output shaft, an oil seal, an outer bushing, an inner bushing, a first bearing and a second bearing, wherein the PTO chamber and the PTO cover are in bolt fastening connection, the inner wall of the PTO chamber is connected with the first bearing and the second bearing in an interference fit manner, the inner bushing and the outer bushing are arranged between the first bearing and the second bearing, the outer side wall of the outer bushing is attached to the inner wall of the PTO chamber, the inner wall of the inner bushing is attached to the outer wall of the PTO output shaft, the PTO chamber is rotationally connected with the second bearing and the PTO output shaft through the first bearing, and the two sides of the inner bushing and the outer bushing are respectively contacted with the first bearing and the second bearing.
(2) According to the power output device of the engineering machinery diesel engine, the PTO cover is provided with the plurality of counter bores, the PTO cover is connected with external output equipment through bolts, the PTO cover is provided with the oil drain holes, the oil drain holes are communicated with the external environment, the design of the oil drain holes is increased, and the problem that hydraulic oil of a hydraulic pump leaks to an engine to cause damage to the engine is solved.
(3) The assembling method of the power output device of the engineering machinery diesel engine adopts the method for assembling, the assembling is tight, the parts are tightly jointed, and the power output is sufficient.
Drawings
FIG. 1 is a schematic structural diagram of a power output device of a diesel engine of an engineering machine, which is disclosed by the invention;
FIG. 2 is a side view of a power output device of a diesel engine of the engineering machinery;
FIG. 3 is a cross-sectional view of a power output device of a diesel engine of the engineering machinery;
fig. 4 is a flow chart of an assembling method of the power output device of the diesel engine of the engineering machinery.
The reference numerals in the schematic drawings illustrate:
100. a PTO chamber; 110. a PTO output shaft; 111. an internal spline; 112. an external spline; 113. a T-shaped structure; 120. oil sealing; 130. an outer liner; 140. an inner liner; 150. a first bearing; 160. a second bearing; 170. an oil hole groove; 180. an oil filler hole;
200. a PTO cover; 210. an oil drainage hole; 220. an annular groove;
300. and an O-shaped ring.
Detailed Description
In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in many different forms and are not limited to the embodiments described herein, but rather are provided for the purpose of providing a more thorough disclosure of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1 to 3, the power output device of the diesel engine of the construction machinery of the embodiment includes a PTO chamber 100, a PTO cover 200, a PTO output shaft 110, and an oil seal 120, the PTO power output device comprises an outer bushing 130, an inner bushing 140, a first bearing 150 and a second bearing 160, a PTO chamber 100 and a PTO cover 200 are in bolt fastening connection, the inner wall of the PTO chamber 100 is connected with the first bearing 150 and the second bearing 160 in an interference fit mode, the inner bushing 140 and the outer bushing 130 are arranged between the first bearing 150 and the second bearing 160, the outer side wall of the outer bushing 130 is attached to the inner wall of the PTO chamber 100, the inner wall of the inner bushing 140 is attached to the outer wall of a PTO output shaft 110, the PTO chamber 100 is rotatably connected with the second bearing 160 and the PTO output shaft 110 through the first bearing 150, and the two sides of the inner bushing 140 and the two sides of the outer bushing 130 are respectively in contact with the first bearing 150 and the second bearing 160.
The PTO cover 200 of the embodiment is provided with the counter bores, the PTO cover 200 is connected with external output equipment through bolts, oil drainage holes 210 are formed in the PTO cover 200, the oil drainage holes 210 are communicated with the external environment, the oil drainage holes 210 are additionally arranged, when the external equipment is a hydraulic pump, the hydraulic pump damages the hydraulic oil to be leaked into an engine, the hydraulic oil is leaked to the outside through the oil drainage holes 210, and damage to the engine is avoided.
In the PTO cover 200 of the present embodiment, an annular groove 220 is formed therein, an O-ring 300 is installed in the annular groove 220, the O-ring 300 seals the PTO chamber 100, the O-ring 300 is formed in the annular groove 220, and the oil seal 120 is used to isolate the PTO lubricating oil from leaking outwards.
Two annular grooves 220 and an oil hole groove 170 are arranged outside the PTO chamber 100 of the embodiment, the annular grooves 220 are positioned at two sides of the oil hole groove 170, and an oil filling hole 180 is arranged in the oil hole groove 170 and used for internal lubrication of the PTO.
The PTO output shaft 110 of the present embodiment has an internal spline 111 and an external spline 112 at its two ends, respectively, and the end portion having the internal spline 111 is a T-shaped structure 113, and the T-shaped structure 113 limits the bearing.
The external spline 112 of this embodiment is in gear engagement with the gear chamber of the engine, which drives the PTO output shaft 110 to rotate.
The shaft center of the external spline 112 of this embodiment is provided with an internal thread, and the external spline 112 is fixedly connected with the outside through a bolt.
Example 2
Referring to the attached drawings 1-4, the assembling method of the power output device of the diesel engine of the construction machinery in the embodiment comprises the following steps:
s100, fixing the PTO output shaft 110, and assembling a first bearing 150 to a T-shaped structure 113 of the PTO output shaft 110 along the PTO output shaft 110;
s200, sequentially installing an inner bushing 140 and an outer bushing 130 along the PTO output shaft 110, so that the side surfaces of the inner bushing 140 and the outer bushing 130 are attached to the first bearing 150;
s300, mounting a second bearing 160 along the PTO output shaft 110 so that the side surface of the second bearing 160 is attached to the side surfaces of the inner bushing 140 and the outer bushing 130;
s400, installing the O-rings 300 in the annular grooves 220 of the PTO chamber 100 and the PTO cover 200 respectively;
s500, installing the oil seal 120 in the PTO cover 200;
s600, connecting the PTO cover 200 with the PTO chamber 100, and fastening and connecting through bolts.
In the embodiment, the temperature difference between the parts of the first bearing 150 and the second bearing 160 is kept at 200 ℃, and the first bearing and the second bearing are installed in a press-fitting mode.
The power output device assembled by the method can be combined with a hydraulic pump to solve the problem of high failure rate of a steering pump of a steering system, the PTO output shaft 110 is supported by the inner bushing 140 and the outer bushing 130, the structure is simple, the manufacturing cost is low, the inner ring of the inner bushing 140 is provided with a smooth revolution surface which is subjected to finish machining and is matched with the PTO output shaft 110, the precision of the inner ring of the bushing is improved, the stability and the damage resistance of the PTO output shaft 110 during high-speed operation are ensured, and the service life of the PTO output shaft 110 is effectively prolonged.
The above-mentioned embodiments only express a certain implementation mode of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which are within the protection scope of the present invention; therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The utility model provides an engineering machine tool diesel engine power take-off which characterized in that: comprises a PTO chamber (100), a PTO cover (200), a PTO output shaft (110), an oil seal (120), an outer bushing (130), an inner bushing (140), a first bearing (150) and a second bearing (160), the PTO chamber (100) and the PTO cover (200) are in bolt fastening connection, the inner wall of the PTO chamber (100) is connected with a first bearing (150) and a second bearing (160) in an interference fit mode, an inner lining (140) and an outer lining (130) are arranged between the first bearing (150) and the second bearing (160), the outer side wall of the outer bushing (130) is attached to the inner wall of the PTO chamber (100), the inner wall of the inner bushing (140) is attached to the outer wall of the PTO output shaft (110), the PTO chamber (100) is rotationally connected with a second bearing (160) and the PTO output shaft (110) through a first bearing (150), the two sides of the inner lining (140) and the outer lining (130) are respectively contacted with the first bearing (150) and the second bearing (160).
2. The power output device of the diesel engine of the construction machinery as claimed in claim 1, wherein: the PTO cover (200) is provided with a plurality of counter bores, the PTO cover (200) is connected with external output equipment through bolts, the PTO cover (200) is provided with oil drain holes (210), and the oil drain holes (210) are communicated with the external environment.
3. The power output device of the diesel engine of the construction machinery as claimed in claim 1, wherein: an annular groove (220) is formed in the PTO cover (200), an O-shaped ring (300) is installed in the annular groove (220), and the O-shaped ring (300) seals the PTO chamber (100).
4. The power output device of the diesel engine of the construction machinery as claimed in claim 1, wherein: two annular grooves (220) and an oil hole groove (170) are arranged outside the PTO chamber (100), the annular grooves (220) are positioned on two sides of the oil hole groove (170), and an oil filling hole (180) is arranged in the oil hole groove (170).
5. The power output device of the diesel engine of the construction machinery as claimed in claim 1, wherein: the two ends of the PTO output shaft (110) are respectively provided with an internal spline (111) and an external spline (112), and the end part provided with the internal spline (111) is of a T-shaped structure (113).
6. A power take-off of engineering machinery diesel engine according to claim 5, characterized in that: the external spline (112) meshes with a gear chamber gear of an engine that drives the PTO output shaft (110) for rotation.
7. A power take-off of engineering machinery diesel engine according to claim 5, characterized in that: the shaft center of the external spline (112) is provided with internal threads, and the external spline (112) is fixedly connected with the outside through a bolt.
8. An assembly method of a power output device of a diesel engine of engineering machinery is characterized in that: the assembling method comprises the following steps:
s100, fixing the PTO output shaft (110), and assembling a first bearing (150) to a T-shaped structure (113) of the PTO output shaft (110) along the PTO output shaft (110);
s200, sequentially mounting an inner bushing (140) and an outer bushing (130) along the PTO output shaft (110) so that the side surfaces of the inner bushing (140) and the outer bushing (130) are attached to the first bearing (150);
s300, mounting a second bearing (160) along the PTO output shaft (110) so that the side surface of the second bearing (160) is attached to the side surfaces of the inner bushing (140) and the outer bushing (130);
s400, installing O-shaped rings (300) in annular grooves (220) of a PTO chamber (100) and a PTO cover (200) respectively;
s500, installing an oil seal (120) in the PTO cover (200);
s600, connecting the PTO cover (200) with the PTO chamber (100) and fixedly connecting the PTO cover and the PTO chamber through bolts.
9. The assembling method of a power take-off of a diesel engine of a construction machine as claimed in claim 8, wherein: the temperature difference of the parts when the bearing I (150) and the bearing II (160) are installed is kept at 200 ℃, and the parts are installed in a press-fitting mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010025628.2A CN111042913A (en) | 2020-01-10 | 2020-01-10 | Power output device of engineering machinery diesel engine and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010025628.2A CN111042913A (en) | 2020-01-10 | 2020-01-10 | Power output device of engineering machinery diesel engine and assembling method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111042913A true CN111042913A (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010025628.2A Pending CN111042913A (en) | 2020-01-10 | 2020-01-10 | Power output device of engineering machinery diesel engine and assembling method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228212A (en) * | 2020-10-21 | 2021-01-15 | 马鞍山市常立发机械制造有限公司 | Power output device of diesel engine for engineering machinery |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200352686Y1 (en) * | 2003-12-18 | 2004-06-09 | 문진흥 | Power transmission pto shaft |
| US20110162466A1 (en) * | 2009-10-07 | 2011-07-07 | Hydreco | Power take-off |
| CN202301495U (en) * | 2011-09-30 | 2012-07-04 | 广西玉柴机器股份有限公司 | Rear power takeoff transmission component of diesel engine |
| CN105202160A (en) * | 2015-10-13 | 2015-12-30 | 黄石市钜晟重型汽车配件有限公司 | Mine automobile power take-off (PTO) end cover |
| CN205013123U (en) * | 2015-09-07 | 2016-02-03 | 浙江新柴股份有限公司 | Reduce diesel engine PTO power take off's of error that beats interface structure |
| CN109736938A (en) * | 2018-12-14 | 2019-05-10 | 玉柴联合动力股份有限公司 | A kind of novel PTO assembly and its assembly method of diesel engine |
| CN211900776U (en) * | 2020-01-10 | 2020-11-10 | 玉柴联合动力股份有限公司 | Power output device of engineering machinery diesel engine |
-
2020
- 2020-01-10 CN CN202010025628.2A patent/CN111042913A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200352686Y1 (en) * | 2003-12-18 | 2004-06-09 | 문진흥 | Power transmission pto shaft |
| US20110162466A1 (en) * | 2009-10-07 | 2011-07-07 | Hydreco | Power take-off |
| CN202301495U (en) * | 2011-09-30 | 2012-07-04 | 广西玉柴机器股份有限公司 | Rear power takeoff transmission component of diesel engine |
| CN205013123U (en) * | 2015-09-07 | 2016-02-03 | 浙江新柴股份有限公司 | Reduce diesel engine PTO power take off's of error that beats interface structure |
| CN105202160A (en) * | 2015-10-13 | 2015-12-30 | 黄石市钜晟重型汽车配件有限公司 | Mine automobile power take-off (PTO) end cover |
| CN109736938A (en) * | 2018-12-14 | 2019-05-10 | 玉柴联合动力股份有限公司 | A kind of novel PTO assembly and its assembly method of diesel engine |
| CN211900776U (en) * | 2020-01-10 | 2020-11-10 | 玉柴联合动力股份有限公司 | Power output device of engineering machinery diesel engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228212A (en) * | 2020-10-21 | 2021-01-15 | 马鞍山市常立发机械制造有限公司 | Power output device of diesel engine for engineering machinery |
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